JP2019081469A - Air-conditioning control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioning control system capable of suppressing power consumption by pre-air conditioning. An air conditioning control system 1 has an air conditioning ECU 14 capable of causing a vehicle air conditioning device 15 mounted on a vehicle 10 to perform pre-air conditioning. In the air conditioning control system 1, the approach determination unit 33c for determining whether or not the occupant is approaching the vehicle within the distance threshold value, the threshold value setting unit 33d for setting the distance threshold value, and the occupant's approach to the vehicle 10 are stagnant. It is provided with a stagnation determination unit 33e for determining whether or not the system is used. When the approach determination unit 33c determines that the occupant is approaching the vehicle within the distance threshold value, and the stagnation determination unit 33e determines that the occupant's approach to the vehicle 10 is not stagnant, the stagnation determination unit 33e determines that the occupant is not stagnation. The air conditioning ECU 14 executes pre-air conditioning. When the stagnation determination unit 33e determines that the occupant's approach to the vehicle 10 is stagnant, the threshold value setting unit 33d lowers the distance threshold value. [Selection diagram] Fig. 2

Description

  The disclosure in this specification relates to an air conditioning control system that controls a vehicle air conditioner.

  Patent Document 1 discloses a technique relating to air conditioning of a vehicle interior performed before a passenger gets on the vehicle, so-called pre-air conditioning. In this technique, a transmitter carried by the passenger transmits both a pre-air conditioning request signal for instructing start of the pre-air conditioning and position information of the passenger to the vehicle. The ECU of the vehicle that has received the pre-air conditioning request signal estimates the distance from the occupant to the vehicle based on the position information of the occupant and the position information of the vehicle, and estimates the time until the occupant gets in the vehicle. Then, the remaining amount of the battery is detected to calculate the pre-air conditioning available time, and the start timing of the pre-air conditioning is determined based on the pre-air conditioning available time and the time until the passenger gets on the vehicle.

Patent No. 4265566

  The technique of Patent Document 1 does not disclose coping with the change in the movement state of the occupant after the start of the pre-air conditioning. According to the technique of Patent Document 1, even if the occupant takes an action such that the approach to the vehicle is stagnated, such as the occupant staying in place or the moving speed of the occupant becoming slow, the timing of arrival at the vehicle is delayed. When the pre-air conditioning is started, it is considered that the pre-air conditioning will be continued until the crew arrives. In this case, the power consumption by the pre-air conditioning increases.

  An object disclosed is to provide an air conditioning control system capable of suppressing power consumption by pre-air conditioning.

  Several aspects disclosed in this specification employ different technical means from one another in order to achieve each purpose. Further, the claims and the reference numerals in the parentheses described in this section are an example showing the correspondence with the specific means described in the embodiment described later as one aspect, and the technical scope is limited. is not.

  An air conditioning control unit (14) capable of performing pre-air conditioning that air-conditions the passenger compartment before the passenger gets into the vehicle air conditioner (15) mounted on the vehicle (10); On the other hand, an approach determination unit (33c) that determines whether or not the vehicle is approaching within the distance threshold, a threshold setting unit (33d) that sets the distance threshold, and whether or not the occupant approaches the vehicle is stagnated The approach determination unit (33e) includes: the approach determination unit determines that the occupant approaches the vehicle within the distance threshold and the approach determination unit stagnates the approach of the occupant to the vehicle. When it is determined that the air conditioning control unit does not perform pre-air conditioning, and the stagnation determination unit determines that the approach of the occupant to the vehicle is stagnant, the threshold setting unit decreases the distance threshold. .

  According to the disclosure, the air conditioning control system performs pre-air conditioning when the approach of the occupant to the vehicle is not stagnating while the occupant is approaching the vehicle within the distance threshold and the occupant's vehicle The distance threshold can be lowered if the approach to the is stagnant. Therefore, the occupant takes an action such that the occupant stays in the place, the movement speed of the occupant becomes slow, and the approach to the vehicle is stagnated, and the distance threshold is lowered even when the arrival time to the vehicle is delayed. The timing to start the pre-air conditioning can be delayed. As described above, it is possible to provide an air conditioning control system capable of suppressing power consumption by pre-air conditioning.

It is a schematic diagram showing an air-conditioning control system concerning a 1st embodiment. It is a block diagram showing an air conditioning control system concerning a 1st embodiment. It is a flowchart which shows the process which the air-conditioning control system of 1st Embodiment performs. It is a figure which shows an example of the mode of the change of the distance between a passenger | crew and a vehicle, and the change of the operating condition of a compressor. It is a block diagram showing an air conditioning control system concerning a 2nd embodiment. It is a flowchart which the air-conditioning control system of 2nd Embodiment performs. It is a flowchart which the air-conditioning control system of 3rd Embodiment performs.

First Embodiment
The air conditioning control system 1 of the first embodiment will be described with reference to FIGS. 1 to 6. The air conditioning control system 1 includes, for example, a vehicle 10, a portable terminal 20, and a server device 30. The air conditioning control system 1 can control the operation of a vehicle air conditioner 15 that performs air conditioning of a vehicle compartment of the vehicle 10. In particular, the air conditioning control system 1 controls the execution of pre-air conditioning that air-conditions the passenger compartment before the passenger gets on the vehicle 10.

  The vehicle 10 is equipped with a positioning unit 22, a wireless communication unit 21, a DCU 13, an air conditioning ECU 14, and a vehicle air conditioner 15. The vehicle 10 is equipped with a motor as a traveling drive source and a battery for supplying power to the motor. The vehicle 10 is, for example, an electric vehicle using only a motor as a traveling drive source, a hybrid vehicle and a plug-in hybrid vehicle using both a motor and an internal combustion engine as a traveling drive source, and the like. The vehicle air conditioner 15 includes, for example, a heat pump cycle. The vehicle air conditioner 15 is composed of various air conditioning functional components for realizing air conditioning of the vehicle interior. For example, the vehicle air conditioner 15 includes an inside / outside air switching door that switches inside and outside air, a blower for blowing air, a heat pump cycle unit for cooling and heating air composed of an electric compressor or evaporator, a condenser, and the like. Be done. The vehicle air conditioner 15 is driven using the power from the above-described battery.

  The positioning unit 12 includes a GNSS (Global Navigation Satellite System) receiver and an inertial sensor. A GNSS receiver is a receiver which receives the positioning signal which the positioning satellite which comprises GNSS transmits. The GNSS receiver can receive a positioning signal from each positioning satellite of at least one satellite positioning system among satellite positioning systems such as GPS, GLONASS, Galileo, IRNSS, QZSS, Beidou and the like. The inertial sensor is a gyro sensor that measures the angular velocity of the vehicle 10 or an acceleration sensor that measures the acceleration of the vehicle 10. The positioning unit 12 sequentially determines the position of the vehicle 10 by a combination of a positioning signal by the GNSS receiver and a measurement result by the inertial sensor. That is, the positioning unit 12 has a function of specifying the position of the vehicle 10. The positioning unit 12 can transmit the obtained vehicle position information from the wireless communication unit 21 to the server device 30.

  The wireless communication unit 11 performs wireless communication with the server device 30 and the mobile terminal 20 via the Internet, a public network such as a mobile phone network, and a base station. The wireless communication unit 11 can mutually communicate with the server device 30 and the portable terminal 20. Alternatively, the configuration may be such that direct communication with the portable terminal 20 is not performed.

  The DCU 13 and the air conditioning ECU 14 include, as main hardware elements, a microcomputer provided with a computer readable storage medium. The storage medium is a non-transitory tangible storage medium which stores non-temporarily a predetermined program readable by a computer. The storage medium may be provided by semiconductor memory or a magnetic disk or the like. The DCU 13 and the air conditioning ECU 14 have a function of performing various control processes by executing various programs stored in a storage medium by a processor such as a CPU. The DCU 13 and the air conditioning ECU 14 are respectively one of a plurality of ECUs (Electronic Control Units) mounted on the vehicle 10.

  The DCU 13 (Domain Control Unit) is a control device that controls control of on-vehicle equipment belonging to the corresponding domain. In general, a plurality of DCUs 13 are mounted on a vehicle 10. The DCU 13 shown in FIG. 2 is a DCU that generally controls the control of on-vehicle equipment in the domain to which the vehicle air conditioner 15 belongs. The DCU 13 is communicably connected to the air conditioning ECU 14 and is configured to be able to transmit a predetermined instruction signal to the air conditioning ECU 14. It can also be said that the DCU 13 is an ECU higher than the air conditioning ECU 14. The DCU 13 transmits to the air conditioning ECU 14 the start instruction or the cancellation instruction of the pre-air conditioning transmitted from the server device 30.

  The air conditioning ECU 14 is a control device that controls the vehicle air conditioner 15. The air conditioning ECU 14 controls a blower, a compressor, an air mix door, an inside / outside air switching door, an air outlet switching door, and the like in the vehicle air conditioner 15. The air conditioning ECU 14 can perform air conditioning by controlling the vehicle air conditioner 15 even when the ignition switch is off before the occupant gets on the vehicle 10. In response to an instruction from the DCU 13, the air conditioning ECU 14 executes the start of the pre-air conditioning execution or the cancellation of the pre-air conditioning during the execution. The air conditioning ECU 14 corresponds to an “air conditioning control unit”.

  Next, the mobile terminal 20 will be described. The portable terminal 20 includes a wireless communication unit 21, a control unit 23, and an acceleration sensor 24. The portable terminal 20 is a communication device that can be carried by a passenger. The mobile terminal 20 can be provided by, for example, a smartphone, a wearable device, a tablet terminal, or the like, and a communication device owned by an occupant using the vehicle 10. The portable terminal 20 may be provided by a communication terminal having a function of permitting locking and unlocking of the door of the vehicle 10, such as an electronic key or a smart key. Similar to the wireless communication unit 11 of the vehicle 10, the wireless communication unit 21 performs wireless communication with the server device 30 via the public network and the base station. The positioning unit 22 includes a Global Navigation Satellite System (GNSS) receiver. The positioning unit 22 determines the position of the mobile terminal 20 based on the positioning signal by the GNSS receiver. That is, the positioning unit 22 has a function of specifying the position of the portable terminal 20. The positioning unit 22 can transmit the obtained terminal position information from the wireless communication unit 21 to the server device 30. Since the portable terminal 20 is carried by the occupant, the terminal position information can be regarded as the position information of the occupant.

  The acceleration sensor 24 is a sensor incorporated in the mobile terminal 20, and detects an acceleration applied to the mobile terminal 20. The acceleration sensor 24 is, for example, a three-axis acceleration sensor that detects accelerations in three axial directions orthogonal to each other. The acceleration sensor 24 can detect the amount of state of vibration applied to the portable terminal 20 by the movement of the occupant carrying the portable terminal 20 by detecting the acceleration. That is, the acceleration sensor 24 is a vibration detection unit that detects the vibration of the portable terminal 20 carried by the occupant. The acceleration sensor 24 detects an amount of state of vibration applied to the portable terminal 20 as acceleration.

  The control unit 23 includes a microcomputer including a computer readable storage medium as a main hardware element. The storage medium is a non-transitory tangible storage medium which stores non-temporarily a predetermined program readable by a computer. The storage medium may be provided by semiconductor memory or a magnetic disk or the like. The control unit 23 has a function of performing various control processes by executing various programs stored in a storage medium by a processor such as a CPU. The control unit 23 has a function of transmitting the position information acquired by the positioning unit 22 from the wireless communication unit 21 to the server device 30. The control unit 23 has a function of transmitting time change of the state quantity of vibration detected by the acceleration sensor 24, that is, data of time change of acceleration from the wireless communication unit 21 to the server device 30.

  Next, the server device 30 will be described. The server device 30 includes a wireless communication unit 31, a control unit 33, and a data storage unit 32. The server device 30 is provided by, for example, a host computer installed in a management center. The server device 30 is configured of one computer or a plurality of computers. The wireless communication unit 31 performs wireless communication with the vehicle 10 and the mobile terminal 20 via the Internet, a public network such as a mobile phone network, and a base station. The wireless communication unit 31 can mutually communicate with the vehicle 10 and the portable terminal 20.

  The data storage unit 32 is a storage device that stores and accumulates data received by the wireless communication unit 31, calculation processing results by the control unit 33, and the like. The data storage unit 32 stores, for example, position information of the staying place of the occupant. Here, a place where a passenger stays is a place where a passenger sets in advance. As a place of stay, for example, a facility where occupants of the occupants at home, at work, etc. use and stay on a daily basis is set.

  The control unit 33 includes, as a main hardware element, a microcomputer including a storage medium readable by a computer. The storage medium is a non-transitory tangible storage medium which stores non-temporarily a predetermined program readable by a computer. The storage medium may be provided by semiconductor memory or a magnetic disk or the like. The control unit 33 has a function of performing various control processes by executing various programs stored in a storage medium by a processor such as a CPU. In particular, the control unit 33 has functions as a current position determination unit 33a, a distance calculation unit 33b, an approach determination unit 33c, a threshold setting unit 33d, a stagnation determination unit 33e, a preliminary air conditioning start instruction unit 33j, and a preliminary air conditioning stop instruction unit 33k.

  The current location determination unit 33a determines whether the current location of the occupant is a preset stay location. The current position determination unit 33a uses the position information of the portable terminal 20 acquired by the positioning unit 22 of the portable terminal 20 as information on the location of the occupant. The current location determination unit 33a determines that the occupant's location is a preset stay location, for example, when the difference in distance between the position information of the portable terminal 20 and the location information of the stay location is equal to or less than a predetermined distance.

  The distance calculation unit 33 b calculates a current distance Lnow between the mobile terminal 20 and the vehicle 10. The distance calculation unit 33 b is calculated as a linear distance between the mobile terminal 20 and the vehicle 10 from the terminal position information transmitted from the mobile terminal 20 and the vehicle position information transmitted from the vehicle 10.

  The approach determination unit 33c determines whether the occupant approaches the vehicle 10 based on whether the distance Lnow calculated by the distance calculation unit 33b is smaller than the threshold Ls. In other words, it is determined whether the distance Lnow is within the threshold Ls. The threshold Ls is, for example, a linear distance between the occupant and the vehicle 10 preset in the control unit 33. The threshold Ls is determined based on, for example, the time required for pre-air conditioning. Here, the time required for the pre-air conditioning is the time of the pre-air conditioning necessary for the internal temperature to reach a temperature at which the occupant can avoid discomfort when getting into the vehicle compartment. In the first embodiment, the threshold Ls corresponds to the distance threshold. In addition, the approach determination unit 33 c determines whether the distance Lnow exceeds the threshold Ls, and determines whether the occupant is separated from the vehicle 10.

  The threshold setting unit 33 d sets a threshold Ls. The threshold setting unit 33 d can change the threshold Ls that has been set once and set another value again. The threshold setting unit 33 d selects a value to be set as the threshold Ls as appropriate from, for example, a plurality of distance values stored in advance in the storage medium of the control unit 33. As the plurality of distance values, equally spaced distances from the largest distance set as the initial threshold Ls to the smallest distance are stored. The threshold setting unit 33 d can reduce the threshold Ls stepwise by changing the setting of the threshold Ls stepwise from a large value to a small value.

  As the initial threshold Ls, for example, the distance between the occupant and the vehicle 10 determined based on the target air conditioning time Tp is set. Here, the target air conditioning time Tp is, for example, a time required for pre-air conditioning. Here, the time required for the pre-air conditioning is the time of the pre-air conditioning necessary for the internal temperature to reach a temperature at which the occupant can avoid discomfort when getting into the vehicle compartment.

  An example of how to determine the target air conditioning time Tp will be described. For example, considering that pre-air conditioning is performed in summer, the vehicle interior temperature (hereinafter referred to as the inside air temperature) is the outside air temperature to suppress that the occupant feels discomfort due to heat when getting into the vehicle interior. It is desirable that it is equal to or less than Therefore, it is possible to determine the time required for the internal air temperature to reach the same temperature as the outside air temperature by the pre-air conditioning before the passenger gets on the vehicle as the above-mentioned necessary time. As a more specific example, when the vehicle 10 is parked in an environment where the outside temperature is 35 ° C. and the solar radiation can reach, the inside temperature rises to 50 ° C. in about 20 to 30 minutes. In this state, pre-air conditioning is started, and it takes about 3 minutes to reduce the internal temperature to the same as the external temperature, that is, 35 ° C. As described above, 3 minutes can be set as the time Tp required for pre-air conditioning in summer.

  That is, the threshold value Ls can be calculated using the time required for the pre-air conditioning determined as described above and the walking speed of the occupant. The walking speed of the occupant can be an average walking speed of a person. Alternatively, the average walking speed of the occupant may be calculated from walking data of the occupant collected by the portable terminal 20 or the like. For example, assuming that the time required for pre-air conditioning is 3 minutes described above and the walking speed of the occupant is 4 km / h, the initial threshold Ls can be set to 200 m.

  The stagnation determination unit 33e determines whether the approach of the occupant to the vehicle 10 is stagnated. The stagnation determination unit 33e has a vibration determination unit 33e1 as a finer function block. The vibration determination unit 33e1 determines whether the approach is stagnant based on a detected vibration that is a vibration applied to the mobile terminal 20 detected by the acceleration sensor 24 of the mobile terminal 20, for example. The vibration determination unit 33e1 includes a first threshold time determination unit 33f and a second threshold time determination unit 33g as finer functional blocks.

  While the absolute value of the state quantity A (acceleration A) detected by the acceleration sensor 24 is larger than the threshold Ath, the first threshold time determination unit 33f counts that time as the integration time T1. The first threshold time determination unit 33f determines whether this count has reached the first threshold time T1th. That is, the count of time is integrated until the first threshold time T1th is reached. Here, the threshold value Ath is, for example, a value set in advance, and is a value determined by an experiment or the like so that the absolute value of the state quantity A generated by walking of a general person exceeds this threshold value Ath. In other words, the first threshold time determination unit 33f counts, as the integration time T1, a time in which the state quantity A is a value larger than the predetermined range, in this case, the range of Ath to -Ath. The threshold Ath is an example of the state quantity threshold.

  While the state quantity A detected by the acceleration sensor 24 is smaller than the threshold Ath, the second threshold time determination unit 33g counts the time as the integration time T2. The second threshold time determination unit 33g determines whether this count has reached a second threshold time T2th. The second threshold time T2th is set as a time longer than the first threshold time T1th. The count of time is integrated until the second threshold time T2th is reached. In other words, the second threshold time determination unit 33g counts, as the integration time T2, a time in which the state quantity A is smaller than a predetermined range, in this case, the range of Ath to -Ath.

  The vibration determination unit 33e1 causes the second threshold time determination unit 33g to determine the second integration time T2 before the first threshold time determination unit 33f determines that the integration time T1 has reached the first threshold time T1th. When it is determined that the threshold time T2th is reached, it is determined that the approach of the occupant to the vehicle 10 is stagnant. In other words, when the arrival of the integration time T2 at the second threshold time T2th is earlier than the arrival of the integration time T1 at the first threshold time T1th, the vibration determination unit 33e1 stagnates the approach of the occupant to the vehicle 10 It is determined that there is.

  The pre-air-conditioning start instructing unit 33 j transmits an instruction to start the pre-air conditioning to the vehicle 10 from the wireless communication unit 31. The pre-air-conditioning start instructing unit 33 j instructs the air-conditioning ECU 14 to start the pre-air-conditioning through the wireless communication unit 11 on the side of the vehicle 10 and the DCU 13. The preliminary air conditioning start instructing unit 33j instructs the air conditioning ECU 14 to start the preliminary air conditioning based on the determination of the stagnation determination unit 33e. More specifically, the air conditioning instruction is transmitted when the occupant approaches the vehicle 10 within the threshold Ls and the stagnation determination unit 33e determines that the approach of the occupant to the vehicle 10 is not stagnant.

  The pre-air-conditioning stop instruction unit 33k transmits an instruction to stop the pre-air conditioning to the vehicle 10 from the wireless communication unit 31. The pre-air-conditioning stop instruction unit 33k instructs the air-conditioning ECU 14 to stop the pre-air conditioning via the wireless communication unit 11 on the vehicle 10 side and the DCU 13. The pre-air-conditioning stop instruction unit 33k instructs the air-conditioning ECU 14 to stop the pre-air conditioning based on the determination of the current location determination unit 33a or the stagnation determination unit 33e. More specifically, when it is set that the location of the occupant is a preset stay place, the instruction to stop the pre-air conditioning is issued. When the occupant approaches the vehicle 10 within the threshold Ls, and the stagnation determination unit 33e determines that the approach of the occupant to the vehicle 10 is stagnant, the air conditioning stop instruction is issued.

  Next, an example of processing executed by the air conditioning control system 1 will be described with reference to the flowchart of FIG. 3. The air conditioning control system 1 executes the processing of the flowchart of FIG. 3 when the power of the portable terminal 20 is turned on.

  First, in step S10, the air conditioning control system 1 determines whether the current location of the occupant is a preset stay location. In addition, in FIG. 3, the case where a passenger | crew's house is set as a staying place is shown. The process of step S10 corresponds to the process performed by the current position determination unit 33a. If it is determined in step S10 that the current location is at home, the process proceeds to step S50, and the pre-air-conditioning stop instruction unit 33k transmits a pre-air-conditioning prohibition instruction. When the occupant is at home by the processes of steps S10 and S50, pre-air conditioning is prohibited regardless of the distance between the occupant and the vehicle 10.

  On the other hand, when it is determined in step S10 that the current position of the occupant is not at home, the process proceeds to step S20. In step S20, the threshold setting unit 33d sets the threshold Ls. At this time, the threshold setting unit 33d selects the largest value, for example, 200 m, from among the plurality of distance values selected as the threshold Ls. That is, in step S20, the largest value among the candidates of the threshold Ls is selected as an initial value. When the threshold Ls is set in step S20, the process proceeds to step S30.

  In step S30, it is determined whether the current distance Lnow between the occupant and the vehicle 10 is less than the set threshold Ls. In other words, it is determined in step S30 whether the current distance Lnow has reached the threshold Ls, that is, whether the occupant approaches the vehicle 10 within the threshold Ls. Step S30 is processing executed by the approach determination unit 33c.

  If it is determined in step S30 that the threshold Ls is exceeded, the process proceeds to step S32. In step S32, it is determined whether or not the time during which the current distance Lnow exceeds the set threshold Ls has reached a predetermined time T. The predetermined time T is, for example, a time set in advance as a time when it can be considered that the occupant does not have an intention to approach the vehicle 10. If it is determined in step S32 that the predetermined time T has not elapsed, the process returns to step S30 again. If it is determined in step S32 that the predetermined time T has elapsed, the process proceeds to step S34 to prohibit pre-air conditioning. That is, when the pre-air conditioning is not performed, the state is continued, and when the pre-air conditioning is already started, the pre-air conditioning is stopped. When the process of step S34 is completed, the process returns to step S30 again.

  On the other hand, when it is determined in step S30 that the current distance Lnow is less than the threshold Ls, the occupant approaches the vehicle 10 to a distance at which pre-air conditioning may be started, so the process proceeds to step S40. In step S40, it is determined whether the absolute value of the state quantity A detected by the portable terminal 20 exceeds the threshold Ath. If it is determined in step S40 that the absolute value of the state quantity A does not exceed the threshold Ath, that is, falls below the threshold Ath, the process proceeds to step S41, and only while the absolute value of the state quantity A is below the threshold Ath The counting of the integration time T2 is advanced. After step S41, the process proceeds to step S42, in which it is determined whether the integration time T2 has reached a second threshold time T2th. If it is determined in step S42 that the integration time T2 has not reached the second threshold time T2th, the process returns to step S40. At this time, if the absolute value of the state quantity A is less than the threshold Ath, counting of the integration time T2 is continued in step S41, but if the absolute value of the state quantity A exceeds the threshold Ath, the step In order to proceed to S43, the counting of the integration time T2 is temporarily stopped. The process of step S42 is a process executed by the second threshold time determination unit 33g.

  If it is determined in step S40 that the threshold value Ath is exceeded, the process proceeds to step S43, and counting of the integration time T1 proceeds while the absolute value of the state quantity A exceeds the threshold value Ath. After step S43, the process proceeds to step S44, in which it is determined whether the integration time T1 has reached a first threshold time T1th. If it is determined in step S44 that the integration time T1 has not reached the first threshold time T1th, the process returns to step S40. At this time, if the absolute value of the state quantity A exceeds the threshold Ath, counting of the integration time T1 is continued in step S43, but if the absolute value of the state quantity A exceeds the threshold Ath, the step In order to proceed to S41, the counting of the integration time T1 is temporarily stopped. The process of step S44 is a process executed by the first threshold time determination unit 33f. Further, the processes of step S40 to step S44 are processes executed by the vibration determination unit 33e1, and eventually, the stagnation determination unit 33e.

  The control unit 33 repeats the processing from step S40 to step S44 until the integration time T1 reaches the first threshold time T1th or the integration time T2 reaches T2th. If it is determined in step S42 that the integration time T2 has reached T2th before it is determined in step S44 that the integration time T1 has reached T1th, the process proceeds to step S50.

  In step S50, an instruction to prohibit pre-air conditioning is transmitted. That is, when the pre-air conditioning is not performed, the state is continued. If pre-air conditioning has already been started, the pre-air conditioning is stopped. The process of step S50 is a process executed by the pre-air conditioning stop instruction unit 33k. If pre-air conditioning is prohibited in step S50, the process proceeds to step S60.

  In step S60, processing is performed to reduce the value of the threshold Ls. The threshold setting unit 33d executes the process of step S60. The threshold setting unit 33 d newly sets a value one step smaller than the value of the set threshold Ls as the threshold Ls. For example, when 200 m is selected and set from among 200 m, 150 m, and 100 m as the value of the threshold Ls, the threshold setting unit 33 d resets 150 m, which is one step smaller, as the new threshold Ls. When a new threshold is set in step S60, the process returns to step S30. Here, when 100 m is already set as the threshold Ls, since 100 m is the lower limit value of the threshold Ls, the integration times T1 and T2 are reset in step S80 without changing the threshold Ls, and step S30 Return to.

  On the other hand, if it is determined in step S44 that the integration time T1 has reached T1th before it is determined in step S42 that the integration time T2 has reached T2th, the process proceeds to step S70. In step S70, execution of pre-air conditioning is started. That is, when the pre-air conditioning is already started, the pre-air conditioning is continued, and when the pre-air conditioning is prohibited, the prohibition of the pre-air conditioning is canceled and the pre-air conditioning is started. The process of step S70 is a process executed by the preliminary air conditioning start instructing unit 33j. When execution of the pre-air conditioning is started in step S70, the integration times T1 and T2 are reset in step S80, and the process returns to step S30.

  Next, the operation of the air conditioning control system 1 in an example of a specific situation will be described with reference to the graph of FIG. 4. The graph in the upper part of FIG. 4 shows an example of the time change of the distance Lnow until the occupant approaches the vehicle 10 and gets on the vehicle. In the example shown in this graph, the occupant starts walking and approaching the vehicle 10 at time t0, stagnates on the spot from time t2, approaches again to the vehicle 10 at time t3, and the vehicle 10 at time t6. Arriving at and boarding. The situation where the occupant stagnates on the spot is, for example, a situation in which the occupant speaks standingly, or stays at a facility such as a home, a work place, or a restaurant. The graph in the middle of FIG. 4 is an example of a time change of the state amount A detected by the acceleration sensor 24 of the portable terminal 20 carried by the occupant. Between time t2 and time t3 when the occupant is stagnant at the place, the detected state quantity A becomes relatively small. The graph at the bottom of FIG. 4 shows the change in the operating state of the compressor of the air conditioner 15 for the vehicle with the passage of time. Although only the operating state of the compressor is shown in the graph of FIG. 4, other air conditioning functional parts that operate when performing air conditioning such as a blower also operate and stop in the same manner as the compressor.

  First, during the period from time t0 to time t1, since the current distance Lnow exceeds the initial threshold Ls1 set in step S20, steps S30 and S32 are repeated. At time t1, since the current distance Lnow reaches the threshold Ls1, the process proceeds from step S30 to step S40. From time t1 to time t2, a series of processes from step S40 to step S44 is repeated to integrate the integration time T1 and the integration time T2. In the example of FIG. 4, it is assumed that the integration time T1 has not reached the first threshold time T1th by time t2. If the integration time T1 reaches the first threshold time T1th by time t2, the process proceeds to step S70 in step S44, and pre-air conditioning is started between time t1 and time t2.

  When the occupant stagnates at time t2, the state amount A decreases. This makes it easier to count the integration time T2 than the integration time T1. At time t2s, when the integration time T2 reaches the second threshold time T2th prior to the arrival of the integration time T1 at the first threshold time T1th, the process proceeds from step S42 to step S50 and step S60. Therefore, the threshold Ls is reset to the threshold Ls2, which is a value one step lower than the initial threshold Ls1. At this time, assuming that the threshold Ls2 is smaller than the current distance Lnow at time t2s, the process of steps S30 and S32 is repeated until time t4 even if the occupant starts approaching the vehicle 10 again from time t3. It becomes.

When the current distance Lnow reaches the threshold Ls2 at time t4, the process again proceeds from step S30 to step S40. Since the occupant continues to approach the vehicle 10 without stagnating on the spot after time t4, the integration time T1 becomes easier to be counted than during stagnation, and reaching of the first threshold time T1th of the integration time T1 is integrated It is earlier than reaching the second threshold time T2th of time T2. When the integration time T1 reaches the first threshold time T1th at time t5, the process proceeds from step S44 to step S70, and pre-air conditioning is started. After that, the pre-air conditioning is continued until the passenger gets in.
As described above, the air conditioning control system 1 reduces the threshold Ls and delays the timing of the start of the pre-air conditioning in response to the occupant staying in the place, that is, the arrival of the occupant to the vehicle 10 being delayed. Can. As a result, when the current distance Lnow reaches the threshold Ls1, the power used for the pre-air conditioning can be saved as compared with the case where the pre-air conditioning continues to be performed until the passenger gets in.

  Next, the effect brought about by the air conditioning control system 1 of the first embodiment will be described. The air conditioning control system 1 according to the first embodiment includes an air conditioning ECU 14 capable of performing pre-air conditioning that air-conditions the passenger compartment of the vehicle before the passenger gets on the vehicle air conditioner 15 mounted on the vehicle 10. The air conditioning control system 1 includes an approach determination unit 33c that determines whether the occupant approaches the vehicle 10 within a threshold Ls at which execution of the pre-air conditioning starts and a threshold setting unit 33d that sets the threshold Ls. Prepare. The air conditioning control system 1 includes a stagnation determination unit 33e that determines whether the approach of the occupant to the vehicle 10 is stagnant.

  According to this, when the occupant approaches the vehicle 10 in a state where the occupant approaches the vehicle 10 within the distance threshold Ls, the air conditioning control system 1 executes the pre-air conditioning. The starting distance threshold Ls can be reduced. Therefore, even when the timing of arrival at the vehicle 10 is delayed, the timing at which the preliminary air conditioning is started can be delayed by lowering the distance threshold Ls. As described above, the air conditioning control system 1 capable of suppressing the power consumption by the pre-air conditioning can be provided.

  The air conditioning control system 1 further includes an acceleration sensor 24 that detects a vibration applied to the portable terminal 20 carried by the occupant. The stagnation determination unit 33e determines, based on the vibration detected by the acceleration sensor 24, whether or not the change in approach of the occupant with respect to the vehicle 10 is stagnant. According to this, based on the vibration applied to the portable terminal 20, it can be determined whether the approach of the occupant to the vehicle 10 is stagnant. That is, since the movement of the occupant can be directly detected by the portable terminal 20, it is possible to more accurately detect the change in the movement of the occupant.

  The stagnation determination unit 33e includes a first threshold time determination unit 33f and a second threshold time determination unit 33g. The first threshold time determination unit 33f determines whether or not the integrated time T1 of the time in which the state quantity A exceeds the threshold th has reached the first threshold time T1th. The second threshold time determination unit 33g determines whether or not the integrated time T2 of the time in which the state quantity A falls below the threshold Ath reaches the second threshold time T2th. The stagnation determination unit 33e determines that the second threshold time T2th is reached in the second threshold time determination unit 33g before it is determined that the first threshold time T1th is reached in the first threshold time determination unit 33f. In this case, it is determined that the approach of the occupant to the vehicle 10 is stagnant.

  According to this, the stagnation is determined based on the integration time T1 at which the detected vibration falls below the threshold and the integration time T2 above the threshold, so that the threshold Ls should be changed immediately when the vibration falls below the threshold for a short time. It can be avoided.

  After the air conditioning ECU 14 starts the execution of the pre-air conditioning, if it is determined in the stagnation determination unit 33 e that the approach of the occupant to the vehicle 10 is stagnating, the air conditioning ECU 14 stops the pre-air conditioning. According to this, even when the pre-air conditioning is started, when the approach of the occupant with respect to the vehicle 10 stagnates, the power used for the pre-air conditioning can be suppressed by stopping the pre-air conditioning.

  The air conditioning control system 1 includes a current position determination unit 33a that determines whether or not the current position of the occupant is a preset residence of the occupant. When it is determined that the current position of the occupant is the staying place in the current position determination unit 33a, the threshold setting unit 33d does not determine whether the approach of the occupant to the vehicle 10 is stagnated in the stagnation determination unit 33e. Decrease Ls.

  According to this, by previously setting the staying place of the occupant such as the home or the work, when the present place of the occupant is the set staying place, it is judged that the occupant stagnates at the staying place, and stagnation The threshold Ls can be reduced without determining the stagnation in the determination unit 33e.

Second Embodiment
In the second embodiment, a modification of the air conditioning control system 1 according to the first embodiment will be described. Constituent elements in FIGS. 5 and 6 to which the same reference numerals as in the drawings of the first embodiment are attached are similar constituent elements and provide similar functional effects.

  In the air conditioning control system 1 according to the second embodiment, the stagnation determination unit 33e has a distance change determination unit 33e2 as a smaller function block. The distance variation determination unit 33e2 determines whether the approach of the occupant to the vehicle 10 is stagnant based on the variation of the distance between the occupant and the vehicle 10. The distance variation determination unit 33e2 includes, for example, a third threshold time determination unit 33h and a fourth threshold time determination unit 33i as smaller function blocks.

  While the magnitude of the decrease in the distance between the occupant and the vehicle 10 exceeds the decrease threshold, the third threshold time determination unit 33h counts that time as the integration time T3. The third threshold time determination unit 33h determines whether the count of the integration time T3 has reached the third threshold time T3th. That is, the count of time is integrated until the third threshold time T3th is reached. Here, the decrease amount threshold is, for example, a value set in advance, and is a value determined by an experiment or the like so that the moving distance at regular intervals generated by general human walking exceeds this decrease amount threshold.

  The fourth threshold time determination unit 33i counts the integration time T4 while the magnitude of the decrease amount of the distance between the occupant and the vehicle 10 is less than the decrease threshold value. The fourth threshold time determination unit 33i determines whether the count of the integration time T4 has reached the fourth threshold time T4th. The count of the integration time T4 is integrated until the fourth threshold time T4th is reached.

  The distance change determination unit 33e2 is configured such that the fourth threshold time determination unit 33i determines that the integration time T4 is longer than the third threshold time determination unit 33h determines that the integration time T3 has reached the third threshold time T3th. When it is determined that the fourth threshold time T4th is reached, it is determined that the approach of the occupant to the vehicle 10 is stagnant. In other words, the stagnation determination unit 33e indicates that the approach of the occupant to the vehicle 10 is stagnated when the arrival of the integration time T4 at the fourth threshold time T4th is earlier than the arrival of the integration time T3 at the third threshold time T3th. It is determined that there is.

  Next, an example of processing executed by the air conditioning control system 1 will be described with reference to the flowchart of FIG. If it is determined in step S44 that the integration time T2 has reached the second threshold time T2th, the air conditioning control system 1 proceeds to step S47 before proceeding to step S70.

  In step S47, it is determined whether there is a change in the distance between the occupant and the vehicle 10. This process is a process executed by the distance change determination unit 33e2. In step S47, it is determined which of the integration time T3 reaches the third threshold time T3th and the integration time T4 reaches the fourth threshold time T4th. In step S47, for example, when the integration time T2 reaches the second threshold time T2th in step S44, counting of the integration time T3 and the integration time T4 is started.

  Alternatively, the counting process of the integration time T3 and the integration time T4 may be performed in parallel with the counting process of the integration time T1 and the integration time T2. In this case, if the integration time T3 has reached the third threshold time T3th or the integration time T4 has reached the fourth threshold time T4th when the process proceeds from step S44 to step S47, Based on the result, it is determined whether or not there is a change in the distance between the occupant and the vehicle 10. If neither integration time T3 nor T4 reaches the threshold time T3th or T4th at the time when the process proceeds from step S44 to step S47, the integration time T3 reaches the third threshold time T3th or the integration time T4 is the fourth The counting may be continued until the threshold time T4th is reached.

  In the air conditioning control system 1 of the second embodiment, when the vibration determination unit 33e1 determines that the approach of the occupant to the vehicle 10 is not stagnated, the approach of the occupant to the vehicle 10 is stagnated in the distance change determination unit 33e2. When it is determined that the distance change determination unit 33e2 is determined, the determination result in the distance change determination unit 33e2 is selected with priority.

  According to this, for example, even when the occupant is moving around in a certain area, the vibration determination unit determines that the approach is not stagnant even though the occupant is not approaching the vehicle 10, Priority is given to the determination by the distance change determination unit 33e2. This makes it possible to more accurately determine whether the approach of the occupant to the vehicle 10 is stagnant.

Third Embodiment
In the third embodiment, a modification of the air conditioning control system 1 according to the first embodiment will be described. Constituent elements in FIG. 7 having the same reference numerals as those in the drawing of the first embodiment are similar constituent elements, and provide similar functional effects.

  In the third embodiment, the distance change determination unit 33e2 determines the change in distance when the vibration determination unit determines that the approach of the occupant to the vehicle 10 is stagnant. That is, as shown in FIG. 7 as an example of the process, if it is determined in step S43 that the first threshold time T1 has reached the first threshold time T1th, the process proceeds to step S50 to stop the pre-air conditioning. Before, it is determined in step S48 whether or not there is a change in distance. The process in step S48 is the same as the process in step S47 of the second embodiment, and the description of step S47 can be incorporated by reference.

  If it is determined in step S48 that there is no change in the distance, it is determined that the approach of the occupant is stagnant, and the process proceeds to step S50 to stop the pre-air conditioning. On the other hand, if it is determined in step S48 that there is a change in distance, even if it is determined in step S42 that the integration time T2 has reached the second threshold time T2th, the process proceeds to step S70 to start pre-air conditioning Do. In other words, when it is determined that the approach of the occupant to the vehicle 10 is stagnated in the vibration determination unit 33e1, it is determined that the approach of the occupant to the vehicle 10 is not stagnated in the distance change determination unit 33e2. In such a case, priority is given to the determination of the distance variation determination unit 33e2.

  That is, in the air conditioning control system 1 of the third embodiment, when the vibration determination unit 33e1 determines that the approach of the occupant to the vehicle 10 is stagnant, the distance change determination unit 33e2 performs stagnation determination. When it is determined in the distance change determination unit 33e2 that the approach of the occupant to the vehicle 10 is not stagnant, the determination of the distance change determination unit 33e2 is prioritized, and pre-air conditioning is started. Therefore, in the air conditioning control system 1 according to the third embodiment, stagnation of the occupant can be detected more reliably under a situation where it is difficult to detect vibration although the occupant approaches the vehicle 10.

(Other embodiments)
The disclosure in this specification is not limited to the illustrated embodiments. The disclosure includes the illustrated embodiments and variations based on them by those skilled in the art. For example, the disclosure is not limited to the combination of parts and / or elements shown in the embodiments. The disclosure can be implemented in various combinations. The disclosure can have additional parts that can be added to the embodiments. The disclosure includes those in which parts and / or elements of the embodiments have been omitted. The disclosure includes replacements or combinations of parts and / or elements between one embodiment and another embodiment. The disclosed technical scope is not limited to the description of the embodiments. The technical scopes disclosed are set forth by the description of the claims, and should be understood to include all the modifications within the meaning and scope equivalent to the descriptions of the claims. .

  In the above embodiment, the stagnation determination unit 33e includes the vibration determination unit 33e1. Instead of this, the stagnation determination unit 33e may be configured to include the distance fluctuation determination unit 33e2 without including the vibration determination unit 33e1. In other words, the stagnation determination unit 33e reduces the distance between the occupant and the vehicle 10 without determining from the vibration detected by the portable terminal 20 whether the approach of the occupant to the vehicle 10 is stagnant or not. Whether the approach of the passenger to the vehicle 10 is stagnant may be determined from the fluctuation of the amount.

In the above embodiment, the approach determination unit 33 c, the threshold setting unit 33 d, and the stagnation determination unit 33 e are performed by the control unit 33 of the server device 30. Instead of this, on-vehicle ECUs such as the DCU 13 and the air conditioning ECU 14 may be configured to have these functions. In addition, the on-vehicle ECU may have a configuration that the current location determination unit 33a, the preliminary air conditioning start instruction unit 33j, and the preliminary air conditioning stop instruction unit 33k. Since the on-board ECU has each functional block, the corresponding function can be executed by communication between the vehicle 10 and the portable terminal 20 without the server device 30. Or control part 23 of personal digital assistant 20 may have these functions In the above-mentioned embodiment, current distance Lnow between a crew member and vehicles 10 is portable based on a positioning signal which a positioning satellite transmits. The positional information of each of the terminal 20 and the vehicle 10 is acquired and calculated from the acquired positional information. Instead of this, the linear distance may be calculated by near field communication performed between the mobile terminal 20 and the vehicle 10. The short distance communication is, for example, communication conforming to a short distance wireless communication standard such as Bluetooth (registered trademark), Wi-Fi (registered trademark), or ZigBee (registered trademark).

  In the above embodiment, the vibration determination unit 33e1 obtains the acceleration detected by the acceleration sensor 24 as the state amount A of the vibration applied to the portable terminal 20. Instead of this, as the state quantity A of vibration, the speed, displacement, etc. of vibration applied to the portable terminal 20 may be detected by a sensor incorporated in the portable terminal 20. The vibration determination unit 33e1 can adopt any state amount for the determination of vibration as long as it is a state amount capable of detecting a change in vibration applied to the portable terminal 20 accompanying a change in the movement of the occupant.

    Reference Signs List 1 air conditioning control system, 10 vehicles, 14 air conditioning control units, 15 vehicle air conditioners, 20 portable terminals, 24 vibration detection units, 33a current position determination unit, 33c proximity determination unit, 33d threshold setting unit, 33e stagnation determination unit, 33e1 vibration Judgment unit 33e2 Distance variation judgment unit 33f First threshold time judgment unit 33g Second threshold time judgment unit 33h Third threshold time judgment unit 33i Fourth threshold time judgment unit

Claims (8)

An air conditioning control unit (14) capable of performing pre-air conditioning for air conditioning the passenger compartment before the passenger gets into the vehicle air conditioner (15) mounted on the vehicle (10);
An approach determination unit (33c) that determines whether the occupant approaches the vehicle within a distance threshold;
A threshold setting unit (33d) for setting the distance threshold;
A stagnation determination unit (33e) that determines whether the approach of the occupant to the vehicle is stagnant;
Equipped with
In the state where it is determined in the approach determination unit that the occupant is approaching the vehicle within the distance threshold, the stagnation determination unit is determined that the approach of the occupant to the vehicle is not stagnated. In this case, when the air conditioning control unit executes the pre-air conditioning and the stagnation determination unit determines that the approach of the occupant to the vehicle is stagnant, the threshold setting unit determines the distance threshold. Air conditioning control system to lower. It further comprises a vibration detection unit (24) for detecting vibration applied to the portable terminal (20) carried by the occupant,
The stagnation judging unit
The air conditioning control system according to claim 1, further comprising a vibration determination unit (33e1) that determines whether a change in approach of the occupant to the vehicle is stagnant based on a detected vibration detected by the vibration detection unit. The vibration determination unit
A first threshold time determination unit (33f) that determines whether or not an integrated time of time in which a state quantity of the detected vibration exceeds a state quantity threshold has reached a first threshold time;
A second threshold time determination unit (33g) that determines whether or not an integrated time of time in which a state quantity of the detected vibration falls below the state quantity threshold has reached a second threshold time;
Have
When the second threshold time determination unit determines that the second threshold time has been reached before the first threshold time determination unit determines that the first threshold time has been reached, The air conditioning control system according to claim 2, wherein it is determined that the approach to the vehicle is stagnant. The stagnation judging unit
The distance change determination unit (33e2) according to any one of claims 1 to 3, further comprising a distance change determination unit (33e2) that determines whether the approach of the passenger to the vehicle is stagnant based on the change in distance between the passenger and the vehicle. The air conditioning control system according to any one of the preceding claims. The distance variation determination unit
A third threshold that determines whether or not the integration time of the time when the magnitude of the decrease in the distance between the occupant and the vehicle for each predetermined time exceeds the magnitude of the decrease threshold has reached a third threshold time. A time determination unit (33h),
It is determined whether or not a cumulative time of time in which the magnitude of the decrease in distance between the occupant and the vehicle for each predetermined time is less than the magnitude of the decrease threshold has reached a fourth threshold time 4 threshold time determination unit (33i),
Have
When the fourth threshold time determination unit determines that the fourth threshold time has been reached before the third threshold time determination unit determines that the third threshold time has been reached, the occupant's The air conditioning control system according to claim 4, wherein it is determined that the approach to the vehicle is stagnant. It further comprises a vibration detection unit (24) for detecting vibration applied to the portable terminal (20) carried by the occupant,
The stagnation judging unit
A vibration determination unit (33e1) that determines whether a change in approach of the occupant to the vehicle is stagnant based on a detected vibration detected by the vibration detection unit;
A distance variation determination unit (33e2) that determines whether the approach of the occupant to the vehicle is stagnant based on the variation of the distance between the occupant and the vehicle;
When it is determined in the vibration determination unit that the approach of the occupant to the vehicle is not stagnated, and when the distance change determination unit is determined that the approach of the occupant to the vehicle is stagnant The air conditioning control system according to any one of claims 1 to 5, wherein the determination result in the distance change determination unit is selected with priority.   After the air conditioning control unit starts executing the pre-air conditioning, if the stagnation determination unit determines that the approach of the occupant to the vehicle is stagnating, the air conditioning control unit performs the pre-air conditioning. The air conditioning control system according to any one of claims 1 to 6, which is stopped. A current position determination unit (33a) that determines whether or not the current position of the occupant is a predetermined stay position of the occupant;
When it is determined that the current location of the occupant is the staying location in the current location determination unit, the threshold value setting is performed without determining whether the approach of the occupant to the vehicle is stagnated in the stagnation determination unit. The air conditioning control system according to any one of claims 1 to 7, wherein the unit reduces the distance threshold.

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