JP2014096673A - Communication device - Google Patents

Abstract

Provided is a communication apparatus capable of efficiently reducing power consumption in accordance with a use for notifying detection data used for detecting a position of a user.
A smartphone 300A as a communication device includes a 9-axis sensor 313, a wireless communication unit 315 that transmits detection data obtained from the 9-axis sensor 313 to a positioning server device, and a person possessing the smartphone 300A in a predetermined area. A receiving unit 316 that receives a signal indicating that it has entered, and a control that reduces at least the power consumption of the wireless communication unit 315 when the person enters the predetermined area as compared to when the person is outside the predetermined area. 320A.
[Selection] Figure 16

Description

  The present invention relates to a communication device connected to a position detection device that detects a human position.

  A map held by the server, in which a work state sensor (WSS) is attached to the user in order to perform position detection, etc., and detection data for detecting the user's behavior, movement route, posture, and the like is notified from the WSS to the server. A technique for detecting the position of a user by checking the above is known. Since WSS is carried by the user, it is usually driven by a power source such as a battery (power storage unit). In order to perform position detection with high accuracy, it is necessary to acquire detection data at an appropriate timing. In other words, it is desirable to avoid as much as possible that the detection data cannot be acquired due to insufficient battery power.

  In order to avoid an inadequate battery power shortage, it is effective to efficiently reduce power consumption as well as charge the battery at an appropriate timing. For notebook personal computers and the like, various methods for reducing power consumption have been proposed (see, for example, Patent Documents 1 and 2). However, all of these prior arts assume a usage form of a personal computer. For this reason, it is difficult to apply these conventional techniques as they are to the WSS that notifies the server of the detection data used for detecting the position of the user because of the difference in the usage form.

  The present invention has been made in view of the above, and an object of the present invention is to provide a communication device capable of efficiently reducing power consumption in accordance with a use for notifying detection data used for position detection of a user. .

  In order to solve the above-described problems and achieve the object, the present invention is a communication device connected to a position detection device that detects the position of a human based on detection data of a sensor that detects a human motion. The sensor, a transmission unit that transmits the detection data obtained from the sensor to the position detection device, a reception unit that receives a signal indicating that the human has entered a predetermined region, and the human A control unit that reduces at least the power consumption of the transmission unit more than when the person is outside the predetermined area when entering.

  Further, the present invention is a communication device connected to a position detection device that detects the position of a person based on detection data of a sensor that detects a human motion, the sensor and the detection obtained from the sensor. A transmission unit that transmits data to the position detection device, and at least the transmission unit at a time interval shorter than a transmission interval of the transmission unit, and a second state that consumes less power than the first state. And a control unit that switches alternately to a state.

  Further, the present invention is a communication device connected to a position detection device that detects the position of a person based on detection data of a sensor that detects a human motion, the sensor and the detection obtained from the sensor. When the amount of change per unit time of the detection data is less than or equal to a reference value when the transmission unit transmits data to the position detection device, at least the power consumption of the transmission unit than when the amount of change exceeds the reference value And a control unit that reduces the power consumption.

  According to the present invention, there is an effect that power consumption can be efficiently reduced.

FIG. 1 is a network configuration diagram of the device control system of the embodiment. FIG. 2 is a diagram in which a smartphone and a sensor are mounted and defined. FIG. 3 is a diagram illustrating an example in which an information device capable of detecting human movement is mounted separately from a smartphone. FIG. 4 is a diagram illustrating a direction detected by each sensor. FIG. 5 is a diagram illustrating an example of an installation state of the monitoring camera. FIG. 6 is a diagram illustrating an example of an installation state of LED lighting devices, taps, and air conditioners. FIG. 7 is a block diagram illustrating a functional configuration of the positioning server device. FIG. 8 is a diagram illustrating waveforms of acceleration components in the vertical direction when the sitting operation and the standing operation are performed. FIG. 9 is a diagram illustrating a waveform of the angular velocity component in the horizontal direction when the squatting operation and the standing operation are performed, respectively. FIG. 10 is a diagram illustrating a waveform of the angular velocity component in the vertical direction when the operation of changing the direction in a stationary state is performed. FIG. 11 is a diagram illustrating a waveform of the angular velocity component in the horizontal direction of the head when the eye is removed from the display in the seated state. FIG. 12 is a diagram illustrating a waveform of the angular velocity component in the horizontal direction of the head when the line of sight is removed from the display in a sitting state. FIG. 13 is a block diagram illustrating a functional configuration of the control server device according to the embodiment. FIG. 14 is a flowchart illustrating a procedure of detection processing by the positioning server device according to the embodiment. FIG. 15 is a flowchart illustrating a procedure of device control processing according to the embodiment. FIG. 16 is a block diagram illustrating a configuration of the smartphone according to the first embodiment. FIG. 17 is a diagram illustrating an example of a control signal transmitted by the control unit. FIG. 18 is a flowchart illustrating an example of a control procedure by the control unit. FIG. 19 is a block diagram illustrating a configuration of the smartphone according to the second embodiment. FIG. 20 is a diagram illustrating an example of a control signal transmitted by the control unit. FIG. 21 is a block diagram illustrating a configuration of the smartphone according to the third embodiment. FIG. 22 is an explanatory diagram illustrating a hardware configuration example of the positioning server device and the control server device.

  Hereinafter, an embodiment of a communication device according to the present invention will be described in detail with reference to the accompanying drawings.

  The communication apparatus of this embodiment is a communication apparatus such as a smartphone that functions as a WSS. The communication device operates using a built-in battery as a power source. In addition to the battery, the communication device includes a sensor that detects an operation of a person holding the communication device, and a transmission unit that transmits detection data of the sensor to the position detection device. The position detection device detects the position of the person who owns the communication device based on the detection data transmitted from the communication device.

  In addition, the communication device includes a receiving unit that receives a signal indicating that a person holding the communication device has entered a predetermined area, and at least a transmission unit when a person holding the communication device enters the predetermined area. A control unit that reduces power consumption compared to a case where a person who possesses the communication device is outside a predetermined area. The predetermined area is, for example, an area where it is less necessary to detect a human position, that is, an area where it is less necessary for the communication apparatus to transmit detection data to the position detection apparatus, and is a predetermined area. For example, a signal indicating that a predetermined area has been entered may be received from a position detection device, or may be configured to be received from a transmitter provided in the predetermined area. The communication device is configured to reduce the power consumption of at least the transmission unit when a person possessing the communication device enters a predetermined area where the necessity of transmitting the detection data to the position detection device is low, The power consumption can be efficiently reduced without impairing the function as the WSS.

  In addition, the communication apparatus includes a control unit that switches at least the transmission unit between a first state and a second state that consumes less power than the first state at intervals shorter than the transmission interval of the transmission unit. It is good also as a structure provided. The communication apparatus is configured to switch the transmission unit alternately between the first state and the second state at intervals shorter than the transmission interval of the transmission unit, thereby efficiently consuming without impairing the function as the WSS. Electric power can be reduced.

  In addition, if the amount of change per unit time of the detection data obtained from the sensor is less than or equal to the reference value, the communication device will at least consume the power of the transmitter, and the amount of change per unit time of the detection data exceeds the reference value It is good also as a structure provided with the control part reduced more. The communication device is configured to reduce at least the power consumption of the transmission unit when the change amount per unit time of the detection data obtained from the sensor is equal to or less than the reference value, without impairing the function as the WSS, Power consumption can be reduced efficiently.

  Hereinafter, an example in which the communication device according to the present embodiment is realized as a part of a device control system that controls the power of various devices installed in a room in accordance with the position of a person in the room that is a control target area. Will be explained. The applicable system is not limited to such a device control system.

  FIG. 1 is a network configuration diagram of the device control system of the present embodiment. As shown in FIG. 1, the device control system of the present embodiment includes a plurality of smartphones 300 as communication devices, a plurality of monitoring cameras 400, a positioning server device 100 as a position detection device, a control server device 200, A plurality of LED (Light Emitting Diode) lighting devices 500, a plurality of taps 600, and a plurality of air conditioners 700 are provided as devices to be controlled.

  The plurality of smartphones 300, the plurality of monitoring cameras 400, and the positioning server device 100 are connected by a wireless communication network such as Wi-Fi (Wireless Fidelity), for example. Note that the wireless communication method is not limited to Wi-Fi. Moreover, the monitoring camera 400 and the positioning server apparatus 100 may be connected with a wire.

  The positioning server device 100 and the control server device 200 are connected to a network such as the Internet or a LAN (Local Area Network).

  In addition, the control server device 200, the plurality of LED lighting devices 500, the plurality of taps 600, and the plurality of air conditioners 700 are connected by a wireless communication network such as Wi-Fi, for example.

  The communication method between the control server device 200, the plurality of LED lighting devices 500, the plurality of taps 600, and the plurality of air conditioners 700 is not limited to Wi-Fi, and other wireless communication methods are used. In addition, a wired communication system such as an Ethernet (registered trademark) cable or PLC (Power Line Communications) may be used.

  The smartphone 300 is an information device (WSS) that is carried by a human and detects a human operation. FIG. 2 is a diagram illustrating a wearing state of the smartphone 300. In addition to being held by a human hand or the like, the smartphone 300 may be worn on the human waist as shown in FIG.

  Returning to FIG. 1, each of the smartphones 300 is equipped with an acceleration sensor, an angular velocity sensor, and a geomagnetic sensor, and transmits detection data from each sensor to the positioning server device 100 at regular intervals such as 1 second. Yes. Here, the detection data of the acceleration sensor is an acceleration vector. The detection data of the angular velocity sensor is an angular velocity vector. The detection data of the geomagnetic sensor is a magnetic orientation vector. A specific example of the detailed configuration of the smartphone 300 will be described later.

  In the present embodiment, the smartphone 300 is used as the WSS. However, the information processing device is limited to a mobile terminal such as the smartphone 300 as long as the information device includes an acceleration sensor, an angular velocity sensor, and a geomagnetic sensor and can detect a human motion. It is not a thing.

  In addition, the smartphone 300 includes information devices that detect human movements such as an acceleration sensor, an angular velocity sensor, and a geomagnetic sensor, and the information devices that detect human movements may be mounted separately from the smartphone 300. Good.

  For example, FIG. 3 is a diagram illustrating an example in which an information device capable of detecting human movement is mounted separately from the smartphone 300. As illustrated in FIG. 3, separately from the smartphone 300, a small headset type sensor group 301 including an acceleration sensor, an angular velocity sensor, and a geomagnetic sensor can be attached to the head. In this case, the detection data detected by the sensor group 301 can be transmitted directly to the positioning server device 100 via the smartphone 300 in addition to being directly transmitted to the positioning server device 100 by the sensor group 301. As described above, by attaching the sensor group 301 to the human head separately from each sensor of the smartphone 300, various posture detections can be performed.

  FIG. 4 is a diagram illustrating a direction detected by each sensor. FIG. 4A shows directions detected by the acceleration sensor and the geomagnetic sensor. As shown in FIG. 4A, the acceleration sensor and the geomagnetic sensor can detect the traveling direction, the vertical direction, the horizontal direction acceleration component, and the geomagnetic direction component, respectively. FIG. 4B shows an angular velocity vector A detected by the angular velocity sensor. Here, the arrow B indicates the positive direction of the angular velocity. In the present embodiment, the projection of the angular velocity vector A onto the traveling direction, the vertical direction, and the horizontal direction shown in FIG. 4A is considered, and the angular velocity component in the traveling direction, the angular velocity component in the vertical direction, and the angular velocity component in the horizontal direction, respectively. That's it.

  Returning to FIG. 1, the monitoring camera 400 images a room that is a control target area, and is installed near the upper part of the room, for example. FIG. 5 is a diagram illustrating an example of an installation state of the monitoring camera 400. In the example of FIG. 5, the surveillance cameras 400 are installed at two locations near the door in the room, but the present invention is not limited to this. The monitoring camera 400 images a room that is a target area and transmits the captured image (captured video) to the positioning server device 100.

  Returning to FIG. 1, in the present embodiment, the illumination system, the tap system, and the air conditioning system are targeted for power control. A plurality of LED lighting devices 500 as a lighting system, a plurality of taps 600 as a tap system, and a plurality of air conditioners 700 as an air conditioning system are targeted for power control.

  The plurality of LED lighting devices 500, the plurality of taps 600, and the plurality of air conditioners 700 are installed in a room that is a control target area. FIG. 6 is a diagram illustrating an example of an installation state of the LED lighting device 500, the tap 600, and the air conditioner 700.

  As shown in FIG. 6, one group is formed by six desks in the room, and three groups are provided. One LED lighting device 500 and one tap 600 are provided for each desk. On the other hand, one air conditioner 700 is provided between two groups. In addition, arrangement | positioning of such LED lighting apparatus 500, the tap 600, and the air conditioner 700 is an example, and is not limited to the example shown in FIG.

  Although not shown in FIG. 6, the sum total information of the total power in the room according to the present embodiment can be grasped by the grid power measuring device installed outside the room.

  Inside the room, 18 people are carrying out specific business activities, and the entrance to and exit from the room is done with two doors. In the present embodiment, the layout, devices, number of people, and the like are limited, but the present invention can be applied to a wider variety of layouts and devices. Furthermore, the present invention can be widely expanded and applied to the arbitraryness in the scalability of the space scale and the number of people and the arbitraryness in the user attribute and the type of work involved when viewed in individual units or group units. Moreover, this embodiment may be applied not only to indoor spaces as shown in FIGS.

  Note that the positioning server device 100 and the control server device 200 of this embodiment are installed outside the room shown in FIGS. In the present embodiment, the positioning server device 100 and the control server device 200 are not subject to power control, but these may be subject to power control.

  In this embodiment, network devices such as Wi-Fi access points, switching hubs, and routers constituting the communication network system are excluded from power control. However, these devices may be subject to power control. Is possible.

  The amount of power consumed by these network devices can be calculated as the amount of power obtained by dividing the total power in the LED lighting device 500, the air conditioner 700, and the tap 600 from the total system power.

  Each of the plurality of LED lighting devices 500, the plurality of taps 600, and the plurality of air conditioners 700 is remotely controlled by the control server device 200 via a network.

  That is, the LED lighting device 500 is remotely controlled by the control server device 200 with respect to the illumination range and illuminance. Specifically, the LED lighting device 500 is provided with an on / off switch that can be individually controlled remotely, and the on / off control is performed by the control server device 200 by a wireless control method using Wi-Fi. The LED lighting device 500 uses an LED lamp with a dimming function in consideration of low power consumption, and the dimming function is configured to be capable of remote control via Wi-Fi.

  The illumination system is not limited to the LED illumination device 500, and for example, an incandescent lamp or a fluorescent lamp can be used.

  The air conditioner 700 is remotely controlled by the control server device 200 to turn on / off the power. That is, the air conditioner 700 can be individually controlled remotely, and the control targets are the air direction and the air blowing intensity in addition to the on / off of the air conditioner 700. In this embodiment, although control is not performed about the temperature and humidity which ventilate, it is not limited to this, Temperature and humidity can also be made into a control object.

  The tap 600 is provided with a plurality of tap openings, and power supply on / off of each tap opening is remotely controlled by the control server device 200. That is, the tap 600 is provided with an on / off switch that can be remotely controlled individually for each tap opening. The on / off control is performed by the control server device 200 using a Wi-Fi wireless control scheme. The number of tap openings included in one tap 600 can be any number, but as an example, a structure in which one tap is constituted by four tap openings can be used.

  As shown in FIG. 6, one tap 600 is installed on each desk. The tap 600 can be connected to an electrical device (not shown), specifically, a desktop PC, a display device, a notebook PC, a printer device, and chargers.

  In the present embodiment, a power source of a display device, which is a device in which a direct relationship with a person is important, is connected to the tap opening of the tap 600. The display device is a device that can be controlled by turning on / off the power supplied to the tap port by the control server device 200.

  Even when a desktop PC main body or printer device is connected to the tap 600, the control server device 200 cannot control the power supplied to the tap port by on / off due to the configuration of the device. For this reason, for desktop PCs, control software can be controlled by installing control software that can shift to the power saving mode or shutdown via the network, and return from the power saving mode or shutdown state. Is a manual operation by the user himself.

  Further, when a charger or a notebook PC at the time of charging is connected to the tap 600, it is always turned on for convenience. Note that devices connected to the tap opening of the tap 600 are not limited to these.

  Returning to FIG. 1, the positioning server device 100 receives the detection data of each sensor described above from each smartphone 300 or sensor group 301 possessed by a person in the room that is the control target area, and detects the position of each person in the room. The operating status is detected, and the position and operating status are transmitted to the control server device 200.

  FIG. 7 is a block diagram showing a functional configuration of the positioning server device 100. As shown in FIG. 7, the positioning server device 100 mainly includes a communication unit 101, a position specifying unit 102, an operation state detection unit 103, a correction unit 104, and a storage unit 110.

  The storage unit 110 is a storage medium such as a hard disk drive (HDD) or a memory, and stores various information necessary for processing of the positioning server device 100 such as indoor map data that is a control target area.

  The communication unit 101 detects each of the acceleration sensor, the angular velocity sensor, and the geomagnetic sensor mounted on the smartphone 300 or the acceleration sensor, the angular velocity sensor, and the geomagnetic sensor of the sensor group 301 separate from the smartphone 300 at regular intervals. Receive data. That is, the communication unit 101 receives an acceleration vector from the acceleration sensor, receives an angular velocity vector from the angular velocity sensor, and receives a magnetic orientation vector from the geomagnetic sensor.

  In addition, the communication unit 101 receives a captured image from the monitoring camera 400. Furthermore, the communication unit 101 transmits an operation state such as an absolute position of a human, which will be described later, a direction, and a posture, to the control server device 200.

  The position specifying unit 102 analyzes the received detection data and specifies the absolute position of the person in the room with the accuracy of the human shoulder width or stride. Details of the method of specifying the absolute position of the human by the position specifying unit 102 will be described later.

  The operation state detection unit 103 analyzes the received detection data and detects a human operation state. In the present embodiment, the movement state detection unit 103 detects whether the human is in a stationary state or a walking state as the movement state. Further, when the operation state is a stationary state, the operation state detection unit 103 indicates the operation state of the human direction with respect to the device in the control target area and whether the human posture is a standing state or a seating state based on the detection data. To detect.

  That is, when it is detected from the captured image from the monitoring camera 400 that the person has entered the room through the door, the operation state detection unit 103 detects the acceleration sensor, the angular velocity sensor, and the geomagnetic sensor of the smartphone 300 attached to the person who has entered the room. Or, using the time series data of the acceleration vector and the angular velocity vector among the detection data sequentially received from the acceleration sensor, the angular velocity sensor, and the geomagnetic sensor of the sensor group 301 separate from the smartphone 300, the human operating situation is Sequentially determine whether walking or standing. Here, the method of determining whether the human motion state is the walking state using the acceleration vector and the angular velocity vector is realized by the processing by the dead reckoning device disclosed in Japanese Patent No. 4243684. Then, when it is determined that the person is not in a walking state by this method, the operation state detection unit 103 determines that the person is in a stationary state.

  More specifically, the operation state detection unit 103 detects a human operation state as follows, similarly to the processing by the dead reckoning device disclosed in Japanese Patent No. 4243684.

  That is, the operation state detection unit 103 obtains a gravitational acceleration vector from the acceleration vector received from the acceleration sensor and the angular velocity vector received from the angular velocity sensor, subtracts the gravitational acceleration vector from the acceleration vector, and removes the vertical acceleration. Obtain time-series data of residual acceleration components. Then, the motion state detection unit 103 performs principal component analysis on the time-series data of the residual acceleration component to obtain the traveling direction of the walking motion. Furthermore, the motion state detection unit 103 searches for a pair of peak and valley peaks of the acceleration component in the vertical direction, and searches for a pair of valley peak and peak of the acceleration component in the traveling direction. Then, the operation state detection unit 103 calculates the gradient of the acceleration component in the traveling direction.

  Furthermore, the operation state detection unit 103 determines whether or not the gradient of the acceleration component in the traveling direction is equal to or greater than a predetermined value at the detection time of the valley peak at which the vertical acceleration component changes from the peak to the peak. If it is equal to or greater than the predetermined value, it is determined that the human motion state is a walking state.

  On the other hand, in the above processing, a peak-to-valley peak pair in the vertical acceleration component is not searched, or a trough peak-to-peak peak pair in the traveling acceleration component is not searched, or a vertical acceleration is detected. When the gradient of the acceleration component in the traveling direction is less than a predetermined value at the time of detection of the valley peak at which the component changes from the peak to the valley peak, the motion status detection unit 103 indicates that the human motion status is stationary. It is determined that

  If it is determined that the person is in a stationary state, the position specifying unit 102 determines that the position of the door is a stationary state from the reference position using the acceleration vector, the angular velocity vector, and the magnetic orientation vector as the reference position. The relative movement vector to the specified position is obtained. Here, as a method of calculating the relative movement vector using the acceleration vector, the angular velocity vector, and the magnetic azimuth vector, the method disclosed in the processing of the dead reckoning device disclosed in JP 2011-47950 A is used.

  More specifically, the position specifying unit 102 obtains a relative movement vector as follows, similarly to the processing of the dead reckoning device disclosed in JP 2011-47950 A.

  That is, the position specifying unit 102 obtains a gravity azimuth vector from the acceleration vector received from the acceleration sensor and the angular velocity vector received from the angular velocity sensor, and from the gravity azimuth vector and the magnetic azimuth vector received from the angular velocity vector or the geomagnetic sensor, The attitude angle is calculated as the moving direction. The position specifying unit 102 obtains a gravitational acceleration vector from the acceleration vector and the angular velocity vector, and calculates an acceleration vector generated by the walking motion from the gravitational acceleration vector and the acceleration vector. Then, the position specifying unit 102 analyzes and detects the walking motion from the gravitational acceleration vector and the acceleration vector generated by the walking motion, and determines the magnitude of the walking motion based on the detection result. And the acceleration vector generated by the walking motion, and the measurement result is used as a stride. Then, the position specifying unit 102 obtains a relative movement vector from the reference position by integrating the movement direction and the stride thus obtained. That is, the human position is detected in real time with an accuracy of human stride or shoulder width, for example, approximately 60 cm or less (more specifically, approximately 40 cm or less).

  When the relative movement vector is calculated in this way, the position specifying unit 102 specifies the absolute position after the movement of the person from the relative movement vector from the door and the indoor map data stored in the storage unit 110. To do.

  As a result, the position specifying unit 102 can specify up to which desk the person is located in the room. As a result, the shoulder width of the person, for example, approximately 60 cm or less (more specifically, approximately 40 cm). It is possible to specify the position of a person with an accuracy of less than about).

  The higher the positional accuracy is, the better. For example, assuming a scene in which two or more people are having a conversation, it is rare that they talk in contact with each other, and they are separated by a certain distance. Accordingly, when considering accuracy, the accuracy corresponding to the shoulder width or stride of a person, whether standing or sitting, is equivalent to the length from the waist to the knee.

  According to the anthropometric data published by the Ministry of Health, Labor and Welfare (Makiko Kawachi, Masaaki Mochimaru, Hiroshi Iwasawa, Seiji Mitani (2000): Japanese Human Body Size Database 1997-98, Ministry of International Trade and Industry, Industrial Technology Institute and JIS Center) The data (shoulder width) corresponding to the shoulder width of adolescents and elderly men and women is about 35 cm (34.8 cm) for the elderly women with the lowest average value, and about 40 cm (39.7 cm) for the highest adolescent men It has become. Similarly, the difference between the length from the waist to the knee (pubic bone joint upper edge height−femoral outer epicondyle height) is about 34 cm to about 38 cm. On the other hand, the stride when a person moves is 95 steps when walking 50 m, and is about 53 cm (50 ÷ 95 × 10) from now on, and the position detection method used in the present invention can have an accuracy equivalent to the stride. Therefore, the present embodiment is configured based on the above data on the assumption that the accuracy is 60 cm or less, preferably 40 cm or less. These data serve as a standard for considering accuracy, but are based on the Japanese and are not limited to these values.

  Further, when the absolute position of the person is specified and the person is stationary at the seat in front of the desk, the operation state detection unit 103 determines whether the human display device is in accordance with the direction of the magnetic direction vector received from the geomagnetic sensor. Determine the direction (orientation). In addition, when the person is stationary at the seat in front of the desk, the operation state detection unit 103 determines the posture of the person, that is, whether the person is standing or sitting from the acceleration component in the vertical direction of the acceleration vector.

  Here, as in the dead reckoning device disclosed in Japanese Patent No. 4243684, the gravitational acceleration vector is determined from the acceleration vector received from the acceleration sensor and the angular velocity vector received from the angular velocity sensor. Obtain the acceleration component in the vertical direction. Then, similarly to the dead reckoning device disclosed in Japanese Patent No. 4243684, the operation state detection unit 103 obtains peaks of peaks and valleys of acceleration components in the vertical direction.

  FIG. 8 is a diagram illustrating waveforms of acceleration components in the vertical direction when the sitting operation and the standing operation are performed. As shown in FIG. 8, in the case of the seating operation, the interval from the peak of the peak of the acceleration component in the vertical direction to the peak of the valley is about 0.5 seconds. On the other hand, in the standing motion, the interval from the peak of the vertical acceleration component to the peak of the peak is about 0.5 seconds. For this reason, the operation state detection unit 103 determines whether the person is in a sitting state or a standing state based on the interval between the peaks. That is, when the interval from the peak of the peak of the acceleration component in the vertical direction to the peak of the valley is within a predetermined range from 0.5 seconds, the motion state detection unit 103 determines that the human motion state is the sitting state. judge. Further, when the interval between the peak of the vertical acceleration component valley and the peak of the mountain is within a predetermined range from 0.5 seconds, the motion state detection unit 103 determines that the human motion state is the standing state. judge.

  As described above, when the motion state detection unit 103 determines whether the human motion state is the standing state or the seated state, the position in the height direction of the human is approximately 50 cm or less (more specifically, approximately 40 cm or less). It means that it was detected with the accuracy of.

  Further, as in the example shown in FIG. 3, a smartphone 300 equipped with information devices for detecting human motion such as an acceleration sensor, an angular velocity sensor, and a geomagnetic sensor is worn on the waist, and further, the acceleration sensor, the angular velocity sensor, and the geomagnetism are mounted. When a small headset-type sensor group 301 including sensors is mounted on the head, the operation state detection unit 103 can further detect the following human postures and movements.

  FIG. 9 is a diagram showing waveforms of angular velocity components in the horizontal direction when the squatting operation and the standing operation are performed. From the acceleration data from the acceleration sensor, waveforms similar to those of the seating motion and the standing motion shown in FIG. 8 are detected, but it is difficult to discriminate the squatting motion and the standing motion only from the acceleration data.

  For this reason, the motion state detection unit 103 uses the above-described method for discriminating between the sitting motion and the standing motion based on the waveform of FIG. 8, and the temporal change in the angular velocity data in the horizontal direction received from the angular velocity sensor becomes the waveform of FIG. By judging whether or not they match, a squatting action and a standing action are discriminated.

  Specifically, the operation state detection unit 103 first has an interval from the peak of the vertical acceleration component to the peak of the valley based on the acceleration vector received from the acceleration sensor within a predetermined range from 0.5 seconds. Determine whether or not.

  When the interval from the peak of the peak of the acceleration component in the vertical direction to the peak of the valley is within a predetermined range from 0.5 seconds, the motion state detection unit 103 detects the horizontal direction of the angular velocity vector received from the angular velocity sensor. As shown in the waveform of FIG. 9, the angular velocity component of gradually increases from 0, then reaches a peak of the mountain with a rapid increase, gradually decreases from the peak of the mountain, then gradually returns to 0, and the time between Is about 2 seconds, it is determined that the human action is a squatting action.

  In addition, the operation state detection unit 103 determines whether or not the interval from the peak of the valley of the acceleration component in the vertical direction to the peak of the peak is within a predetermined range from 0.5 seconds. When the interval from the peak of the valley of the acceleration component in the vertical direction to the peak of the mountain is within a predetermined range from 0.5 seconds, the motion state detection unit 103 performs the horizontal direction of the angular velocity vector received from the angular velocity sensor. When the angular velocity component of the peak reaches the valley peak stepwise from 0, gradually returns to 0 from the valley peak, and the time between them is about 1.5 seconds, as shown in the waveform of FIG. It is determined that the human motion is a standing motion.

  As the angular velocity vector used in the determination of the squatting motion and the standing motion in the motion state detection unit 103 as described above, it is preferable to use an angular velocity vector received from an angular velocity sensor mounted on the head. This is because the angular velocity component in the horizontal direction based on the angular velocity vector from the angular velocity sensor worn on the head shows the waveform shown in FIG.

  FIG. 10 is a diagram illustrating a waveform of an angular velocity component in the vertical direction when a human performs an operation of changing the direction by approximately 90 degrees in a stationary state. If the angular velocity component in the vertical direction is positive, the direction is changed to the right side, and if it is negative, the direction is changed to the left side.

  The operation state detection unit 103 gradually changes the angular velocity component in the vertical direction of the angular velocity vector received from the angular velocity sensor from 0 to gradually reaching the peak of the mountain as shown in FIG. When it returns and the time between these is about 3 seconds, it determines with the operation | movement changing a direction to the right.

  Further, the operation state detection unit 103 gradually returns to 0 after the time-dependent change in the angular velocity component in the vertical direction reaches the peak of the valley gradually from 0 as shown in the waveform of FIG. Is about 1.5 seconds, it is determined that the direction changes to the left.

  The motion state detection unit 103 is similar to the waveform of FIG. 10 according to the above-described determination in terms of the vertical angular velocity component of the angular velocity vector received from both the angular velocity sensor of the head and the angular velocity sensor of the hip smartphone 300. When the change over time is indicated, it is determined that the movement of the whole body changes to the right or left.

  On the other hand, the motion state detection unit 103 shows that the vertical angular velocity component of the angular velocity vector received from the angular velocity sensor of the head shows a temporal change similar to the waveform of FIG. When the angular velocity component in the vertical direction of the angular velocity vector from the angular velocity sensor shows a temporal change that is completely different from the waveform of FIG. 10, it is determined that the direction of the head is changed to the right or left. As such an operation, for example, a posture operation in the case of communicating with an adjacent user while the user is seated can be considered.

  FIG. 11 is a diagram showing the waveform of the angular velocity component in the horizontal direction of the angular velocity vector received from the angular velocity sensor of the head when the line of sight is removed from the display in the sitting state.

  Consider a case where the position specifying unit 102 determines that the absolute position of a person is in front of a desk, and the operation state detecting unit 103 detects that a person in front of the desk is in a sitting state. In such a case, the motion state detection unit 103 gradually reduces the angular velocity component in the horizontal direction of the angular velocity vector received from the angular velocity sensor of the human head from 0 like the waveform shown in FIG. And then suddenly returns to 0, and the time between them is about 1 second, it is determined that the action is to remove the line of sight from the display in the seated state (the action to look up). Further, the operation state detection unit 103 reaches the peak of the mountain while the angular velocity component in the horizontal direction gradually increases from 0 as in the waveform shown in FIG. 11, and then gradually returns to 0. When the time is about 1.5 seconds, it is determined that the operation is to return the line of sight to the display from the state where the line of sight is removed from the display in the sitting state.

  FIG. 12 is a diagram showing the waveform of the angular velocity component in the horizontal direction of the angular velocity vector received from the angular velocity sensor of the head when the line of sight is removed from the display in the sitting state.

  Consider a case where the position specifying unit 102 determines that the absolute position of a person is in front of a desk, and the operation state detecting unit 103 detects that a person in front of the desk is in a sitting state. In such a case, the motion state detection unit 103 causes the angular velocity component in the horizontal direction of the angular velocity vector received from the angular velocity sensor of the human head to rapidly increase from 0 as shown in the waveform shown in FIG. If it returns to 0 rapidly after that, and the time between them is about 0.5 seconds, it is determined that the action is to take the line of sight down from the display in the seated state (looking down) .

  Further, the operation state detection unit 103 reaches the peak of the valley while the angular velocity component in the horizontal direction decreases rapidly from 0 as in the waveform shown in FIG. 12, and then suddenly returns to 0. When the time is about 1 second, it is determined that the operation is to return the line of sight to the display from the state where the line of sight is removed from the display in the sitting state.

  As described above, the motion state detection unit 103 is a posture and motion that an office worker can take on a daily basis, that is, walking (standing state), standing (stationary state), sitting on a chair, squatting during work, sitting state Alternatively, it is possible to determine by the above-described method whether the direction (direction) is changed in the standing state, looking up at the heaven in the sitting state or the standing state, whispering in the sitting state or the standing state, and the like.

  In addition, when using the technique of the dead reckoning device of patent 4243684, as disclosed in patent 4243684, the lifting and lowering motion of a human by an elevator is also determined using the acceleration component in the vertical direction. .

  For this reason, in the present embodiment, the operation state detection unit 103 uses the function of the map matching device disclosed in Japanese Patent Application Laid-Open No. 2009-14713, and the vertical acceleration component in FIG. When the detected waveform is detected, it is possible to determine with high accuracy whether it is a standing motion or a seating motion, unlike the elevator lifting / lowering motion of the dead reckoning device disclosed in Japanese Patent No. 4243684.

  The correction unit 104 corrects the specified absolute position and operation status (direction and posture) based on the captured image from the monitoring camera 400 and the map data stored in the storage unit 110. More specifically, the correction unit 104 determines whether or not the absolute position, direction, and posture of the human determined as described above are correct by image analysis of a captured image of the monitoring camera 400 or the like, And the function of the map matching device disclosed in Japanese Patent Application Laid-Open No. 2009-14713. If it is incorrect, the correction unit 104 corrects the correct absolute position, direction, and orientation obtained from the captured image and the map matching function.

  The correction unit 104 is configured to perform correction using limited means such as short-range wireless and optical communication such as RFID and Bluetooth (registered trademark) as well as a captured image from the monitoring camera 400. Also good.

  In this embodiment, the same technology as the dead reckoning device disclosed in Japanese Patent No. 4243684 and Japanese Patent Application Laid-Open No. 2011-47950, and the same technology as the map matching device disclosed in Japanese Patent Application Laid-Open No. 2009-14713. Is used to detect a human motion state, a relative movement vector from a reference position, and a posture (whether standing or sitting), but the detection method is not limited to these techniques. Further, in the above description, when it is determined that the human movement state is stationary, the human position is identified and the movement state such as direction and posture is detected. Similarly, when the is in a walking state, the absolute position in the room of the person may be specified and the operation status such as the direction and the posture may be detected.

  Next, details of the control server device 200 will be described. The control server device 200 includes a plurality of LED lighting devices 500, a plurality of taps 600, and a plurality of air conditioners installed in the room based on the position and operation state (direction, posture) of the person in the room that is the control target area. Each of the 700s is remotely controlled via a network.

  FIG. 13 is a block diagram illustrating a functional configuration of the control server device 200 according to the present embodiment. As shown in FIG. 13, the control server device 200 of this embodiment mainly includes a communication unit 201, a power consumption management unit 202, a device control unit 210, and a storage unit 220.

  The storage unit 220 is a storage medium such as an HDD or a memory, and stores various information necessary for processing of the control server device 200, such as position data of a room that is a control target area.

  The communication unit 201 receives the absolute position and motion information (direction, posture) of the person from the positioning server device 100. Further, the communication unit 201 receives power consumption from the plurality of LED lighting devices 500, the electric devices connected to the plurality of taps 600, and the plurality of air conditioners 700. In addition, the communication unit 201 transmits a control signal for performing power control to the plurality of LED lighting devices 500, the plurality of taps 600, and the plurality of air conditioners 700.

  The power consumption management unit 202 manages the power consumption received from the plurality of LED lighting devices 500, the electric devices connected to the plurality of taps 600, and the plurality of air conditioners 700.

  The device control unit 210 includes a lighting device control unit 211, an outlet control unit 213, and an air conditioner control unit 215. The lighting device control unit 211 controls the LED lighting device 500 based on the absolute position and motion information (direction, posture) of the person. More specifically, the lighting device control unit 211 sets the lighting range to be narrower than a predetermined range if the person is seated on the LED lighting device 500 disposed in the vicinity of the received absolute position, A control signal for setting the illuminance higher than a predetermined threshold is transmitted via the communication unit 201. As a result, it is possible to control the illumination range and illuminance suitable for fine work for a user who is working in a sitting state.

  On the other hand, the lighting device control unit 211 communicates a control signal for setting the illumination range wider than the predetermined range and setting the illuminance lower than the predetermined threshold if the person is standing up to the LED lighting device 500. The data is transmitted via the unit 201. This makes it possible to control the illumination range and illuminance so that a standing user can look over the entire room.

  The outlet control unit 213 controls power on / off of the tap opening of the tap 600 based on the absolute position of the person and the operation information (direction and posture). More specifically, the outlet control unit 213 is seated with respect to the display device connected to the tap 600 arranged in the vicinity of the received absolute position, and the direction with respect to the display device is forward. In this case, a control signal for turning on the switch of the tap port to which the display device is connected in the tap 600 is transmitted via the communication unit 201.

  On the other hand, the outlet control unit 213 is connected to the display device connected to the tap 600 when a person is standing or the direction toward the display device is backward. A control signal for turning off the switch of the tap opening is transmitted via the communication unit 201.

  As described above, the power control is performed according to the direction of the person with respect to the display device, and the display device is an important device in the direct relationship with the person, and it is determined that the display device is used when the direction is forward. Because it can be done. Further, when the human posture is also in the sitting state, it can be determined that the display device is being used. As described above, in the present embodiment, power control is performed in consideration of the actual use of the device, and finer control can be performed as compared with the case where the power control is simply performed based on the distance from the device. It becomes.

  Furthermore, the outlet control unit 213 of this embodiment performs power control of the desktop PC main body and the display device in conjunction with human personal recognition information. For example, the personal authentication information is transmitted from the smartphone 300 possessed by a person in the room to the positioning server device 100 and transmitted from the positioning server device 100 to the control server device 200. Using the personal authentication information, the outlet control unit 213 can perform power control on an electrical device associated with each person in the room. The correspondence relationship between each person and the electrical device may be stored in the storage unit 220, for example.

  The air conditioner control unit 215 controls on / off of the power supply of the air conditioner 700 based on the absolute position of the person. More specifically, the air conditioner control unit 215 transmits, via the communication unit 201, a control signal for turning on the power of the air conditioner 700 set in the group in which the received seat at the absolute position exists.

  Next, the detection process by the positioning server device 100 of the present embodiment configured as described above will be described. FIG. 14 is a flowchart illustrating the procedure of the detection process performed by the positioning server device 100 according to the present embodiment. The detection process according to the flowchart is executed for each of the plurality of smartphones 300.

  In addition to the detection process according to this flowchart, the positioning server device 100 includes an acceleration sensor, an angular velocity sensor, a geomagnetic sensor, or an acceleration sensor, an angular velocity sensor, and a geomagnetic sensor mounted on the plurality of smartphones 300. Detection data (acceleration vector, angular velocity vector, magnetic direction vector) is received from each sensor at regular intervals, and captured images are received from a plurality of monitoring cameras 400.

  First, it is determined whether or not a person has entered a room, which is a control target area, based on a captured image of a door to be opened and closed (step S11). If the user has not entered the room (step S11: No), the positioning server device 100 determines whether or not the person has left the room (step S20). If the user has not left the room (step S20: No), the process returns to step S11 and is repeated. If the user leaves the room (step S20: Yes), the detection process is terminated. When the user enters the room (step S11: Yes), the operation state detection unit 103 detects the operation state of the person who has entered the room using the method described above (step S12). Then, the operation state detection unit 103 determines whether or not the human operation state is a walking state (step S13), and repeats detection of the operation state while it is a walking state (step S13: Yes).

  On the other hand, when the human motion state is not the walking state in step S13 (step S13: No), the motion state detection unit 103 determines that the human motion state is the stationary state. And the position specific | specification part 102 calculates a relative movement vector from a door by the above-mentioned method by making a reference | standard position into a door (step S14).

  Then, the position specifying unit 102 specifies the absolute position of the human being in a stationary state based on the map data of the room stored in the storage unit 110 and the relative movement vector from the door (step S15). As a result, the position specifying unit 102 can specify up to which desk the person is placed in the room, and as a result, the shoulder width of the person (approximately 60 cm or less, more specifically approximately 40 cm or less). The position of the person is specified with the accuracy of.

  Next, the operation state detection unit 103 further detects the direction (orientation) of the human display device from the magnetic direction vector received from the geomagnetic sensor as the operation state of the human being in a stationary state (step S16).

  Next, the motion state detection unit 103 detects the posture of whether the human body is sitting or standing by the above-described method (step S17). As a result, the operation state detection unit 103 detects the position in the height direction of the human with an accuracy of approximately 50 cm or less (more specifically, approximately 40 cm or less).

  In addition, the operation state detection unit 103 may determine whether the human operation state is a squatting operation or a standing operation, an operation for changing the orientation in the sitting state, an operation for returning the direction, an operation for raising the line of sight in the sitting state, or an operation for returning the line of sight. Whether the action of lowering the line of sight or the action of returning the line of sight may be detected.

  Next, the correction unit 104 determines whether or not correction is necessary for the specified absolute position, detected direction, and posture as described above, and corrects if necessary (step S18).

  Then, the communication unit 101 transmits the absolute position, the detected direction and orientation (if corrected, the corrected absolute position, the detected direction and orientation) to the control server device 200 as detection result data. (Step S19). In the above description, when it is determined that a human motion state is stationary, the absolute position, direction, and posture of the human being are transmitted to the control server device 200 as detection result data. Similarly, when the motion state is the walking state, the absolute position, direction, and posture of the person may be transmitted to the control server device 200 as detection result data.

  Next, device control processing by the control server device 200 will be described. FIG. 15 is a flowchart illustrating a procedure of device control processing according to the present embodiment.

  First, the communication unit 201 receives the absolute position, direction, and posture of a person as detection result data from the positioning server device 100 (step S31). Next, each control unit 211, 213, 215 of the device control unit 210 specifies the LED lighting device 500, the tap 600, and the air conditioner 700 to be controlled from the absolute position of the received detection result data (step S32).

  More specifically, the lighting device control unit 211 refers to the position data stored in the storage unit 220 and specifies the LED lighting device 500 installed on the desk corresponding to the absolute position as a control target. Further, the outlet control unit 213 refers to the position data stored in the storage unit 220 and specifies the tap 600 installed near the desk corresponding to the absolute position as a control target. The air conditioner control unit 215 refers to the position data stored in the storage unit 220 and specifies the air conditioner 700 installed corresponding to a group having a desk corresponding to the absolute position as a control target.

  Next, the air conditioner control unit 215 performs control to turn on the power of the identified air conditioner 700 (step S33).

  Next, the outlet control unit 213 determines whether or not the direction of the received detection result data is forward and whether or not the posture of the detection result data is a seated state (step S34). When the direction is the front and the posture is the seating state (step S34: Yes), the outlet control unit 213 switches the switch of the tap mouth to which the display device is connected in the tap 600 specified in step S32. Control to turn on is performed (step S35).

  On the other hand, when the direction is rearward or the posture is standing in step S34 (step S34: No), the outlet control unit 213 connects the display device at the tap 600 specified in step S32. Control is performed to turn off the switch of the tapped port (step S36).

  Next, the lighting device control unit 211 determines again whether or not the posture of the received detection result data is the seating state (step S37). When the posture is the seated state (step S37: Yes), the lighting device control unit 211 sets the illumination range of the LED lighting device 500 specified in step S32 to be narrower than the predetermined range, and sets the illuminance to a predetermined threshold value. Control to set higher is performed (step S38).

  On the other hand, when the posture is in the standing state in step S37 (step S37: No), the illumination device control unit 211 sets the illumination range of the LED illumination device 500 specified in step S32 to be wider than the predetermined range, and the illuminance Is set to be lower than a predetermined threshold value (step S39).

  In addition, you may comprise each control part 211,213,215 of the apparatus control part 210 so that control other than the control mentioned above may be performed with respect to each control object apparatus.

  In addition, the human movement status is squatting or standing, changing the orientation in the sitting state, returning it, raising the line of sight in the sitting state (looking up), returning the line of sight, or looking in the sitting state. The control units 211, 213, and 215 of the device control unit 210 may be configured to control each control target device depending on whether the operation is to lower (look down) or return the eye.

  Examples of each operation, control target device and control method in such a case are as follows. These operations are operations that can occur when it is assumed that an operator is sitting in front of a desk, and the controlled device is a desktop fan corresponding to a PC or a display device of a PC, a desk lamp, and individual air conditioning. Etc.

  For example, when it is determined that the operation of squatting continues for a certain time or more from the received detection result data when the worker is at the desk, the switch of the tap port to which the power source of the PC is connected is turned off. Thus, the outlet control unit 213 can be configured. In addition, the mode control unit can be configured so that the device control unit 210 is provided with a mode control unit that controls the mode of the device, and the display device of the PC is shifted to the standby mode.

  In addition, when the standing operation is detected from the sitting state and the standing state continues for a certain time or more, the mode control unit is configured to shift the PC to the standby mode, or the power supply of the display device is connected at the same time. The outlet control unit 213 can be configured to turn off the switch of the tapped port.

  The following control is given as an example for the operation of changing the direction. If a change in the orientation of the face or upper body is detected from the state of sitting at the desk, and this state continues for a certain period of time, the situation may be such as a conversation with another worker in an adjacent seat. If the lighting device such as a PC, a display device, or a desk lamp is set to standby or off, and it is detected that the orientation of the worker has returned to the original state, the lighting device such as a PC, a display device, or a desk lamp is turned on. The outlet control unit 213 and the mode control unit can be configured so as to be turned on.

  Further, it is conceivable to perform an operation of looking down when the worker reads a document at a desk, and to perform an operation of looking up at the ceiling when the worker comes up with or thinks of an idea. For this reason, when an operation of looking up or looking down for a certain time or longer is continuously detected, the outlet control unit 213 performs control to shift the PC to the standby mode or to turn off the display device. A mode control unit can be configured. Further, in the case of an operation to look down, the outlet control unit 213 may be configured to perform control without turning off the desk lamp.

  As described above, in the present embodiment, the position of the person is specified with the accuracy of the shoulder width, the direction and posture of the person is detected, and the power control of the equipment is performed. Therefore, the power control of the equipment with finer precision is possible. Thus, it is possible to realize further power saving and energy saving while maintaining worker comfort and high work efficiency.

  In other words, in this embodiment, not only can a person be detected, but the equipment owned by the person, the lighting equipment directly above the desk on which the person sits, the air conditioner, and the office equipment can be individually controlled, and each person can be controlled. It is possible to simultaneously grasp the amount of power used.

  In the prior art, even if the power of buildings, offices, entire factories, and entire offices can be realized so-called `` visualization '', it is unclear how individuals should save power, and the overall target value If the situation is not tight, such as exceeding the power supply amount or exceeding the amount of power supplied, it is difficult to proceed continuously because it is difficult to be aware of power savings. It is possible to realize further power saving and energy saving while maintaining efficiency.

  Further, according to the present embodiment, even in automatic device control, power saving can be further improved by performing cooperative control between devices as well as people and devices.

  As described above, in the device control system of the present embodiment, the smartphone 300 is used as a WSS that detects human movement. Then, based on the detection data transmitted from smartphone 300 to positioning server device 100 at a predetermined interval, positioning server device 100 detects the position of the person holding smartphone 300. In order for the positioning server device 100 to perform human position detection with high accuracy, it is necessary to acquire detection data from the smartphone 300 at an appropriate timing. In other words, it is desirable to avoid as much as possible that detection data cannot be acquired from the smartphone 300 due to insufficient power of the battery of the smartphone 300. Therefore, in the present embodiment, the smartphone 300 is configured to be able to efficiently reduce power consumption without impairing the function as the WSS, so that a shortage of battery power can be avoided as much as possible. Hereinafter, specific configuration examples of the smartphone 300 according to the present embodiment will be described as first to third examples.

(First embodiment)
FIG. 16 is a block diagram illustrating a configuration of the smartphone 300A according to the first embodiment. As illustrated in FIG. 16, the smartphone 300 </ b> A according to the first embodiment includes a battery 311, a DC-DC converter 312, a 9-axis sensor 313, a CPU (Central Processing Unit) 314, a wireless communication unit 315, and a reception unit. 316 and a control unit 320A.

  The battery 311 is a power storage unit that supplies power necessary for the operation of the smartphone 300A. The DC-DC converter 312 converts the voltage supplied from the battery 311 into a voltage required for each part of the smartphone 300A and supplies the voltage to each part of the smartphone 300A.

  The 9-axis sensor 313 is a sensor corresponding to the above-described acceleration sensor (3-axis), angular velocity sensor (3-axis), and geomagnetic sensor (3-axis). The wireless communication unit 315 performs wireless communication with an external device such as the positioning server device 100. For example, the wireless communication unit 315 functions as a transmission unit that transmits detection data obtained from the 9-axis sensor 313 (acceleration sensor, angular velocity sensor, and geomagnetic sensor) to the positioning server device 100.

  The CPU 314 controls various processes performed by the smartphone 300A. For example, the CPU 314 transmits detection data detected by the 9-axis sensor 313 to the positioning server device 100 via the wireless communication unit 315. Further, the CPU 314 is configured to detect the operation state (whether it is a walking state or a stationary state, a standing state or a sitting state, etc.) of the person holding the smartphone 300A based on detection data detected by the 9-axis sensor 313. You may do (detection part).

  The receiving unit 316 receives a signal indicating that a person holding the smartphone 300A has entered a predetermined area. The predetermined area is, for example, an area where the necessity of detecting a human position is low, that is, an area where the smartphone 300 </ b> A has a low need to transmit detection data of the 9-axis sensor 313 to the positioning server device 100. In the office space, for example, a restroom, a conference room, a dining room, and the like correspond to a predetermined area. In these areas, power saving control according to each area is generally performed instead of power saving control according to the position of the person, so that the necessity of detecting the position of the person is low. For this reason, these regions may be determined in advance as predetermined regions.

  The receiving unit 316 can be configured to receive, for example, a signal indicating that a person holding the smartphone 300A has entered the predetermined area from a transmitter provided in the predetermined area. Specifically, for example, transmitters that transmit signals by a short-range wireless method are respectively provided inside and outside the vicinity of the entrance / exit of a predetermined area. The receiving unit 316 receives signals from these two transmitters. The receiving unit 316 receives a signal from the transmitter provided outside the entrance / exit of the predetermined area, and then receives the signal from the transmitter provided inside the entrance / exit of the predetermined area within a short time. In this case, a signal indicating that the person holding the smartphone 300A has entered the predetermined area is received. The receiving unit 316 receives a signal from a transmitter provided inside the vicinity of the entrance / exit of the predetermined area, and then receives a signal from the transmitter provided outside the entrance / exit of the predetermined area within a short time. Is received, a signal indicating that the person holding the smartphone 300A has left the predetermined area has been received.

  The receiving unit 316 can also be configured to receive from the positioning server device 100 a signal indicating that a person who has the smartphone 300A has entered a predetermined area. In this case, the positioning server device 100 holds a wide range of map data including a predetermined area, and whether or not the person who owns the smartphone 300A has entered the predetermined area using the detection data and map data transmitted from the smartphone 300A. Determine whether. And if the positioning server apparatus 100 judges that the person who has the smart phone 300A entered into the predetermined area, it sends a signal to that effect and the receiving unit 316 receives it. The receiving unit 316 may be configured using a weak power wireless module different from the wireless communication unit 315, or the wireless communication unit 315 may have a function as the receiving unit 316.

  When the receiving unit 316 receives a signal indicating that the person holding the smartphone 300A has entered a predetermined area, the control unit 320A determines the power consumption of the 9-axis sensor 313, the CPU 314, and the wireless communication unit 315 by using the smartphone 300A. It is reduced compared with the case where the person who possesses is outside the predetermined area. For example, when the receiving unit 316 receives a signal indicating that a person holding the smartphone 300A has entered a predetermined area, the control unit 320A receives the signal from the 9-axis sensor 313, the CPU 314, and the wireless communication unit 315. Sends a control signal to turn off the power. When the CPU 314 or the wireless communication unit 315 has a low power mode in which the power consumption is lower than that in the normal operation mode, a control signal for transitioning from the normal mode to the low power mode is sent to the CPU 314 and the wireless communication unit 315. You may make it do.

  In addition, when the person holding the smartphone 300A enters a predetermined area, the control unit 320A does not always turn off the nine-axis sensor 313, the CPU 314, and the wireless communication unit 315, or put the wireless communication unit 315 in a low power mode. It may be controlled to periodically turn on the power for a short time or to return to the normal operation mode. For example, as shown in FIG. 17, the control unit 320A maintains a Lo level for a time T1, then rises to a Hi level, maintains a Hi level for a time T2, and repeats a cycle of falling to the Lo level. The data is sent to each of the 9-axis sensor 313, the CPU 314, and the wireless communication unit 315. In the control signal shown in FIG. 17, the Lo level indicates a power-off or low power mode operation, and the Hi level indicates a power-on or normal operation mode operation. The time T1 is set to a sufficient time for obtaining the effect of reducing the power consumption of the smartphone 300A. The time T2 is a time sufficient to transmit the detection data obtained by the 9-axis sensor 313 from the wireless communication unit 315 to the positioning server device 100. By sending a control signal that synchronizes the timing of becoming a Hi level to each of the 9-axis sensor 313, the CPU 314, and the wireless communication unit 315, even if the person who owns the smartphone 300A is in a predetermined area, Detection data can be intermittently transmitted from the smartphone 300 </ b> A to the positioning server device 100, and it becomes possible to grasp a person's position within a predetermined area to some extent.

  Further, when the control unit 320A sends a control signal as shown in FIG. 17, nine axes are selected according to the operation state (whether the walking state or the stationary state, the standing state or the sitting state) of the person holding the smartphone 300A. The intervals at which the sensor 313, the CPU 314, and the wireless communication unit 315 are each turned on for a short time or returned to the normal operation mode may be changed. That is, when the person holding the smartphone 300A is in a walking state, the time T1 for maintaining the Lo level of the control signal illustrated in FIG. 17 is shortened and detected by the positioning server device 100 from the smartphone 300A as compared with the case of a stationary state. Increase the number of times data is sent. Furthermore, even if the person who holds the smartphone 300A is in a stationary state, if the person is standing, the time T1 for maintaining the Lo level of the control signal illustrated in FIG. To increase the number of times the detection data is transmitted to the positioning server device 100. Thereby, it becomes possible to grasp the human position in the predetermined area to some extent while reducing the power consumption of the smartphone 300A as much as possible. Note that changing the time T1 for maintaining the Lo level of the control signal according to the human operating status changes the power consumption of the 9-axis sensor 313, the CPU 314, and the wireless communication unit 315 according to the human operating status. It corresponds to that.

  For example, the CPU 314 can detect the operation status of the person who owns the smartphone 300 </ b> A based on detection data from the 9-axis sensor 313. In this case, the CPU 314 determines the operation status of the person holding the smartphone 300A based on the detection data from the 9-axis sensor 313 while the control signal becomes Hi level and the power is turned on or the normal operation mode is restored. What is necessary is just to perform the process to detect.

  In the case of a configuration in which a signal indicating that the person who owns the smartphone 300A has entered the predetermined area is received from the positioning server device 100, the receiving unit 316 further indicates the operation status of the person who possesses the smartphone 300A. You may make it receive from 100.

  FIG. 18 is a flowchart illustrating an example of a control procedure performed by the control unit 320A of the smartphone 300A. The control procedure shown in FIG. 18 is repeatedly executed by the control unit 320A while the smartphone 300A is activated.

  First, the control unit 320A determines whether or not a person holding the smartphone 300A has entered a predetermined area by monitoring reception of a signal by the reception unit 316 (step S101). If the person who owns smartphone 300A is not in the predetermined area (step S101: No), control unit 320A ends the control as it is. On the other hand, when the person who owns the smartphone 300A enters the predetermined area (step S101: Yes), the control unit 320A acquires the operation state of the person who owns the smartphone 300A (step S102), and responds to the operation state. A control signal is generated and sent to each of the 9-axis sensor 313, the CPU 314, and the wireless communication unit 315 (step S103).

  Thereafter, the control unit 320A monitors reception of a signal by the reception unit 316 to determine whether or not the person who owns the smartphone 300A has left the predetermined area (step S104), and the person who owns the smartphone 300A If it remains in the predetermined area (step S104: No), the process returns to step S102 and the processes of steps S102 and S103 are repeated. On the other hand, when the person who has the smartphone 300A leaves the predetermined area (step S104: Yes), the series of control is terminated.

  As described above, in the smartphone 300A of the first embodiment, when the person who owns the smartphone 300A enters a predetermined area where the necessity for position detection is low, the control unit 320A includes the 9-axis sensor 313, the CPU 314, and Since control is performed so as to reduce the power consumption of the wireless communication unit 315, the power consumption can be efficiently reduced without impairing the function as the WSS.

  In the above example, when the person holding the smartphone 300A enters a predetermined area where the need for position detection is low, the control unit 320A consumes all of the 9-axis sensor 313, the CPU 314, and the wireless communication unit 315. Although control is performed to reduce power, control may be performed so as to reduce only some of these power consumptions. Of the 9-axis sensor 313, the CPU 314, and the wireless communication unit 315, the power consumption of the smartphone 300A is controlled by reducing at least the power consumption of the wireless communication unit 315 that consumes particularly large power during normal operation. The effect of greatly reducing

(Second embodiment)
FIG. 19 is a block diagram illustrating a configuration of the smartphone 300B according to the second embodiment. As illustrated in FIG. 19, the smartphone 300 </ b> B according to the second embodiment includes a battery 311, a DC-DC converter 312, a 9-axis sensor 313, a CPU 314, a wireless communication unit 315, and a control unit 320 </ b> B. Since the battery 311, the DC-DC converter 312, the 9-axis sensor 313, the CPU 314, and the wireless communication unit 315 are the same as those in the first embodiment, description thereof is omitted.

  The control unit 320B causes the 9-axis sensor 313, the CPU 314, and the wireless communication unit 315 to move from the first state and the first state at intervals shorter than the detection data transmission interval (for example, 1 second) by the wireless communication unit 315. Are alternately switched to the second state with low power consumption. The first state is, for example, a power-on state, and the second state is, for example, a power-off state. When the CPU 314 or the wireless communication unit 315 has a low power mode that consumes less power than the normal operation mode, the normal operation mode may be set to the first state and the low power mode may be set to the second state.

  For example, as shown in FIG. 19, the control unit 320B sends a control signal that alternately repeats the Hi level at time T3 and the Lo level at time T4 to each of the 9-axis sensor 313, the CPU 314, and the wireless communication unit 315. To do. In the control signal shown in FIG. 19, the Hi level instructs the power-on or normal operation mode, and the Lo level instructs the power-off or low power mode operation. The time T3 is, for example, 0.2 seconds, the time T4 is, for example, 0.3 seconds, and the time T3 + T4 (the period between the Hi level and the Lo level) is shorter than the transmission period of the detection data by the wireless communication unit 315.

  In addition, the control unit 320B may change the ratio of the time T3 and the time T4 in one cycle of the control signal in accordance with the operation state of the person holding the smartphone 300B. That is, when the person holding the smartphone 300b is in a walking state, the ratio of the time T3 in one cycle of the control signal illustrated in FIG. Furthermore, even if the person holding the smartphone 300B is in a stationary state, if the person is standing, the ratio of the time T3 in one cycle of the control signal illustrated in FIG. Note that changing the ratio of the time T3 and the time T4 in one cycle of the control signal in accordance with the human operating status means that the power consumption of the 9-axis sensor 313, the CPU 314, and the wireless communication unit 315 is changed in accordance with the human operating status. Is equivalent to changing

  As described above, in the smartphone 300B of the second embodiment, the control unit 320B sets the 9-axis sensor 313, the CPU 314, and the wireless communication unit 315 at intervals shorter than the detection data transmission interval by the wireless communication unit 315. Since the control is performed so as to alternately switch between the first state and the second state in which the power consumption is smaller than the first state, the power consumption can be efficiently reduced without impairing the function as the WSS.

  In the above example, the control unit 320B controls all of the 9-axis sensor 313, the CPU 314, and the wireless communication unit 315. However, only a part of them may be controlled. Of the 9-axis sensor 313, the CPU 314, and the wireless communication unit 315, an effect of greatly reducing the power consumption of the smartphone 300B can be expected by controlling at least the wireless communication unit 315 that consumes particularly large power during normal operation.

(Third embodiment)
FIG. 21 is a block diagram illustrating a configuration of a smartphone 300C according to the third embodiment. As illustrated in FIG. 21, the smartphone 300C of the third embodiment includes a battery 311, a DC-DC converter 312, a 9-axis sensor 313, a CPU 314, a wireless communication unit 315, and a control unit 320 </ b> C. Since the battery 311, the DC-DC converter 312, the 9-axis sensor 313, the CPU 314, and the wireless communication unit 315 are the same as those in the first embodiment, description thereof is omitted.

  The controller 320C receives detection data from the 9-axis sensor 313, and compares the amount of change per unit time of the detection data with a predetermined reference value. Then, the control unit 320C determines the power consumption of the CPU 314 and the wireless communication unit 315 when the change amount per unit time of the detection data is equal to or less than the reference value, and the change amount per unit time of the detection data exceeds the reference value. Less than. For example, the control unit 320C outputs a control signal that becomes a Hi level when the amount of change per unit time of detection data obtained from the 9-axis sensor 313 exceeds a reference value, and becomes a Lo level when the change amount is less than the reference value. And transmitted to the wireless communication unit 315. The Hi level of the control signal indicates an operation in power-on or normal mode, and the Lo level indicates an operation in power-off or low power mode.

  The reference value is set to a value with which it can be determined that the person holding the smartphone 300C is in a substantially stationary state, that is, even if there is a slight movement of the body, the person does not move greatly. In such a state, since it is assumed that a person is not moving from his / her seat and the position is not changed, the CPU 314 and the wireless communication are detected when the amount of change in detection data per unit time is equal to or less than the reference value. By operating the communication unit 315 in the power-off or low power mode, the power consumption of the smartphone 300C can be effectively reduced.

  As described above, in the smartphone 300 </ b> C of the third embodiment, the control unit 320 </ b> C reduces the power consumption of the CPU 314 and the wireless communication unit 315 when the amount of change in the detection data per unit time is equal to or less than the reference value. Since the control is performed, the power consumption can be efficiently reduced without impairing the function as the WSS.

  In the above example, the control unit 320C controls the power consumption of both the CPU 314 and the wireless communication unit 315 to be reduced when the amount of change in detection data per unit time is equal to or less than the reference value. Control may be performed so that only the power consumption of either the CPU 314 or the wireless communication unit 315 is reduced. The effect of greatly reducing the power consumption of the smartphone 300C is expected by controlling at least the power consumption of the wireless communication unit 315 having a particularly large power consumption during normal operation, among the CPU 314 and the wireless communication unit 315. it can.

  Next, the hardware configuration of the positioning server device 100 and the control server device 200 according to the present embodiment will be described with reference to FIG. FIG. 22 is an explanatory diagram illustrating a hardware configuration example of the positioning server device 100 and the control server device 200.

  The positioning server device 100 and the control server device 200 of the present embodiment include a control device such as a CPU 51, a storage device such as a ROM (Read Only Memory) 52 and a RAM 53, and a communication I / F 54 that communicates by connecting to a network. , An external storage device such as an HDD and a CD drive device, a display device such as a display device, an input device such as a keyboard and a mouse, and a bus 61 for connecting each part, and a hardware using a normal computer The hardware configuration.

  The detection program executed by the positioning server device 100 of the present embodiment and the control program executed by the control server device 200 of the present embodiment are in an installable format or executable format file such as a CD-ROM, a flexible disk ( FD), CD-R, DVD (Digital Versatile Disc) and the like are provided by being recorded on a computer-readable recording medium.

  In addition, the detection program executed by the positioning server device 100 according to the present embodiment and the control program executed by the control server device 200 according to the present embodiment are stored on a computer connected to a network such as the Internet, and are transmitted via the network. You may comprise so that it may provide by downloading. The detection program executed by the positioning server device 100 according to the present embodiment and the control program executed by the control server device 200 according to the present embodiment may be provided or distributed via a network such as the Internet.

  Further, the detection program executed by the positioning server device 100 of the present embodiment and the control program executed by the control server device 200 of the present embodiment may be configured to be incorporated in advance in the ROM 52 or the like.

  The detection program executed by the positioning server device 100 of the present embodiment has a module configuration including the above-described units (communication unit 101, position specifying unit 102, operation status detection unit 103, correction unit 104). As hardware, the CPU 51 (processor) reads out and executes the detection program from the storage medium, so that the respective units are loaded onto the main storage device, and the respective units are generated on the main storage device.

  The control program executed by the control server device 200 of this embodiment is a module including the above-described units (communication unit 201, power consumption management unit 202, lighting device control unit 211, outlet control unit 213, air conditioner control unit 215). As actual hardware, the CPU 51 (processor) reads the control program from the storage medium and executes it to load the above-mentioned units onto the main storage device, and the respective units are generated on the main storage device. It has become so.

(Modification 1)
From the device control in this embodiment, it can be configured not to perform power control of the display device according to the direction of the person.

(Modification 2)
From the device control in the present embodiment, it can be configured not to perform the power control of the display device according to the direction of the person and the power control of the desktop PC main body or the display device linked to the personal recognition information.

(Modification 3)
In addition to the standing state and the seating state, the device control in the present embodiment is configured to detect a posture correlated with the standing state and the seating state, and perform power control of the display device based on the posture. can do.

DESCRIPTION OF SYMBOLS 100 Positioning server apparatus 101 Communication part 102 Position specific | specification part 104 Operation | movement condition detection part 105 Correction | amendment part 110 Memory | storage part 200 Control server apparatus 201 Communication part 202 Power consumption management part 210 Equipment control part 211 Lighting equipment control part 213 Outlet control part 215 Air conditioner Control unit 220 Storage unit 300 (300A, 300B, 300C) Smartphone 313 9-axis sensor 315 Wireless communication unit 316 Reception unit 320A, 320B, 320C Control unit 400 Monitoring camera 500 LED lighting device 600 Tap 700 Air conditioner

JP 2011-150610 A JP 2012-118891 A

Claims (11)

A communication device connected to the position detection device for detecting the position of the human based on detection data of a sensor for detecting a human motion,
The sensor;
A transmission unit for transmitting the detection data obtained from the sensor to the position detection device;
A receiving unit for receiving a signal indicating that the person has entered a predetermined area;
A communication device, comprising: a control unit that reduces at least power consumption of the transmission unit when the human enters the predetermined region, compared to when the human is outside the predetermined region.   The communication device according to claim 1, wherein the reception unit receives the signal from a transmitter provided in the predetermined area. A detection unit for detecting the operation state of the person based on the detection data obtained from the sensor;
The communication device according to claim 2, wherein the control unit further changes at least power consumption of the transmission unit in accordance with an operation state of the human.   The communication device according to claim 1, wherein the reception unit receives the signal from the position detection device. The receiver further receives the human operating status from the position detection device;
The communication apparatus according to claim 4, wherein the control unit further changes at least power consumption of the transmission unit in accordance with an operation state of the human.   2. The communication according to claim 1, wherein when the person enters the predetermined area, the control unit further reduces power consumption of the sensor as compared with a case where the person is outside the predetermined area. apparatus. A communication device connected to the position detection device for detecting the position of the human based on detection data of a sensor for detecting a human motion,
The sensor;
A transmission unit for transmitting the detection data obtained from the sensor to the position detection device;
A control unit that switches at least the transmission unit between a first state and a second state that consumes less power than the first state at an interval shorter than the transmission interval of the transmission unit. A communication device characterized by the above. A receiver for receiving the human operating status from the position detection device;
The communication apparatus according to claim 7, wherein the control unit changes a ratio between the first state and the second state in accordance with the operation state of the person. A detection unit for detecting the operation state of the person based on the detection data obtained from the sensor;
The communication apparatus according to claim 7, wherein the control unit changes a ratio between the first state and the second state in accordance with the operation state of the person.   The control unit further switches the power consumption of the sensor alternately between the first state and the second state at an interval shorter than the transmission interval of the transmission unit. The communication device described. A communication device connected to the position detection device for detecting the position of the human based on detection data of a sensor for detecting a human motion,
The sensor;
A transmission unit for transmitting the detection data obtained from the sensor to the position detection device;
A control unit that reduces at least the power consumption of the transmission unit when the change amount per unit time of the detection data is equal to or less than a reference value, compared to a case where the change amount exceeds a reference value. Communication device.

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