JP2023078035A - Abnormality detection system for parking facilities - Google Patents

Abstract

An object of the present invention is to detect an abnormality in a parking facility by detecting a person or the like trapped in a vehicle in a boarding/alighting room or a parking space through sound collection operation and acoustic analysis. A parking facility abnormality detection system includes a sound pickup device 33 that picks up the sound inside the parking facility 1 and a sound pickup information receiving section 41 that receives the sound picked up by the sound pickup device 33 as a sound signal. and a collected sound information analysis unit 43 for analyzing a sound signal. It has an analysis result determination unit 51 that compares the new sound signal with the sounded new sound signal and analyzes whether the new sound signal is different from the stationary sound. [Selection drawing] Fig. 5

Description

The present invention relates to an anomaly detection system for parking facilities that reliably detects an anomaly in a boarding/alighting room or a parking space of a parking facility by using a three-dimensional sound collection method and acoustic analysis.

Some parking facilities have a function of detecting an abnormality by detecting a person or an animal trapped in a parking space. As a conventional example of a mechanical parking device having such an abnormality detection function, there is one described in Patent Document 1, for example.

Patent Literature 1 discloses a moving body detection device that is provided in a mechanical parking facility and performs in-vehicle moving body detection for detecting a moving body in a vehicle. a signal generator, a first antenna that transmits the first transmission wave as a radio wave in the in-vehicle moving body detection, and a first transmission wave in the in-vehicle moving body detection that is received by the first antenna, a first determination unit that determines whether or not the moving object exists in the vehicle based on reflected waves of the first transmission wave from a plurality of reflecting objects including the moving object; and the in-vehicle moving object detection. a second signal generator for generating a second transmission wave; a second antenna for transmitting the second transmission wave as a radio wave in the in-vehicle moving body detection; and a second transmission wave in the in-vehicle moving body detection. and a reflected wave of the second transmission wave received by the second antenna from a plurality of reflecting objects including the moving object. The vehicle has a first seat located on the left side of the front row of the vehicle and a second seat located on the right side of the front row when the vehicle is viewed from the windshield side of the vehicle. The first antenna transmits the first transmission wave from the first seat side of the windshield toward the rear of the second seat, and the second antenna transmits the first transmission wave from the second seat of the windshield. A moving object detection device is disclosed that transmits the second transmission wave from the second seat side toward the rear of the first seat.

Japanese Patent Application Laid-Open No. 2020-139400

However, the moving object detection device provided in the conventional parking facility transmits a transmission wave such as an electric wave generated by a signal generator from an antenna and receives a reflected wave from an object to determine the moving object. However, even if a plurality of such moving body detection devices are installed, it is difficult to eliminate blind spots, and it is impractical and costly to install many moving body detection devices to eliminate blind spots.

In addition, the equipment that recognizes an object by transmitting and receiving radio waves in the moving object detection device cannot detect an abnormality unless the equipment catches the object. , animals, and anomalies hidden behind pillars in parking spaces.

The present invention solves the problems described above, and detects an abnormality in the parking facility by detecting a person or the like trapped in the vehicle in the passenger compartment or parking space through sound collection and acoustic analysis. And, another object of the present invention is to provide an abnormality detection system for a parking facility that detects an abnormality in a mechanical parking device in the parking facility.

A parking facility abnormality detection system according to a first aspect is a parking facility abnormality detection system that detects an abnormality in the parking facility, and includes a sound collecting device that collects a sound inside the parking facility, and the sound collecting device. A sound pickup information receiving unit that receives the collected sound as a sound signal, and a sound pickup information analysis unit that analyzes the sound signal, wherein the sound pickup information analysis unit converts the sound signal that has been picked up in advance. It has an analysis result determination unit that compares the steady sound with a new sound signal collected for each vehicle entry/exit work as the steady sound, and analyzes whether the new sound signal is different from the steady sound.

In the parking equipment abnormality detection system according to the second aspect, the sound pickup information analysis unit includes a sound pickup information conversion unit that converts a sound signal received by the sound pickup information reception unit into digital data, and the sound pickup information A conversion information processing unit that analyzes the converted data from the conversion unit and generates an analysis result as an abnormality determination element, and whether an abnormality has occurred inside the parking facility based on the analysis result from the conversion information processing unit an analysis result determination unit that determines whether a non-stationary sound storage unit for storing non-stationary sound information obtained by processing.

In the parking facility abnormality detection system according to the third aspect, the sound pickup device uses a microphone or an electronic device having a microphone element.

In the abnormality detection system for parking equipment according to the fourth aspect, the conversion information processing unit performs array signal processing on the sound pickup information obtained from the sound pickup device in the analysis processing, and detects the sound source position of the steady sound or the non-steady sound. make it possible to identify

According to the abnormality detection system for parking facilities according to the first aspect, people or animals are confined inside the boarding/alighting room or parking space of the parking facilities, and The safety of humans or animals is ensured by detecting the occurrence of an abnormality in the mechanical parking system by analyzing the sound signal.

According to the abnormality detection system for parking facilities according to the second aspect, compared to systems that detect anomalies with cameras or radio waves, abnormalities in the equipment of the parking facilities, or people and animals in the boarding/alighting room of the parking facilities or in the parking space The safety of the person or animal is ensured by detecting an abnormality by analyzing the received sound signal and controlling the operation of the parking facility.

According to the abnormality detection system for parking facilities according to the third aspect, the degree of freedom in system configuration is improved compared to systems that detect an abnormality using a camera or radio waves. In addition, unlike cameras and laser sensors, abnormalities that cannot be identified by images can be detected by analyzing them as sound signals. Specifically, it is possible to detect abnormalities outside the camera's field of view, that is, in the camera's blind spot, people and animals trapped inside the vehicle, and to detect vehicles with the engine running. etc. can also be done.

According to the abnormality detection system for parking facilities according to the fourth aspect, it is possible to specify the sound source position of the stationary sound or the non-stationary sound, compared to the system that detects anomalies using a camera or radio waves.

1 is a plan view showing a passenger compartment of a parking facility according to one embodiment of the present invention; FIG. FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1; FIG. 2 is a cross-sectional view taken along the line BB in FIG. 1; It is a side sectional view showing the whole parking equipment composition concerning this embodiment. 1 is a block diagram showing the configuration of an abnormality detection system for parking facilities according to the present embodiment; FIG.

An example of parking facilities according to the present embodiment will be described with reference to the drawings. 1 to 4 are diagrams showing the internal structure of a parking facility 1 according to one embodiment of the present invention. FIG. 5 is a block diagram showing the configuration of an abnormality detection system provided in the parking facility according to this embodiment. FIG. 1 is a plan view showing a passenger compartment of a parking facility according to one embodiment of the present invention. FIG. 2 is a cross-sectional view taken along line AA in FIG. FIG. 3 is a cross-sectional view taken along line BB in FIG. FIG. 4 is a side cross-sectional view showing the overall configuration of the parking facility according to this embodiment. 1 to 4, the arrow D shown in each drawing indicates the depth direction of the parking facility, and the arrow W indicates the width direction of the parking facility. An arrow H indicates the height direction of the parking facility.

<Overall configuration of parking facilities>
1 to 4, reference numeral 1 indicates a parking facility that is an example of this embodiment. The parking facility 1 has a facility frame 3 which is a three-dimensional structure, a boarding/alighting room 5 provided at an entrance floor for a vehicle 15, and a parking space 7 which is a storage space formed below the entrance floor. Below the passenger compartment 5, an elevator 9 for moving up and down a tray 37 on which a vehicle 15 is placed or an empty tray 37 between the passenger compartment 5 and the parking space 7, and a plurality of elevators installed in the parking space 7. A mechanical parking device 11 including a storage device 13 having a storage compartment, and an abnormality detection system including a sound collecting device 33 attached to the equipment frame 3, the mechanical parking device 11, or both, which will be described later. have. A plurality of trays 37 on which the vehicle 15 is placed are movably arranged in the mechanical parking device 11 .

[Boarding room]
The boarding/alighting room 5 shown in FIGS. It includes an entrance guide mirror 25 installed at the end, an evacuation exit 21 provided on one side wall in the width direction of the passenger compartment 5, and an evacuation exit door 23 for opening and closing the evacuation exit 21.例文帳に追加An operation panel 35 is provided on the wall on the width direction W side of the doorway 17 of the passenger compartment 5 , and various operations for entering and leaving the vehicle 15 are performed on the operation panel 35 . Further, inside the boarding/alighting room 5, there are an emergency stop button 27 for coping with an emergency situation that occurs when the vehicle 15 enters and leaves the parking lot, a camera 31 for capturing an abnormal situation inside the boarding/alighting room 5 as a video, and a camera. A sound collecting device 33 , which will be described later, for detecting an abnormal situation inside the passenger compartment 5 by sound is installed at various places inside the passenger compartment 5 . Further, inside the boarding/alighting compartment 5, a human detector 29 for detecting the moving state of a person or an animal inside the boarding/alighting compartment 5 is installed.

The operation panel 35 is operated when the vehicle 15 enters and exits, and this operation opens the entrance/exit door 19 to allow the vehicle 15 to enter the passenger compartment 5 and to exit the vehicle 15 from the passenger compartment 5 . After the entry and exit of the vehicle 15 are completed, the entrance/exit door 19 is closed by operating the operation panel 35 or automatically. When the emergency stop button 27 is operated, the operation of the entrance/exit door 19 or the operation of the entire parking facility 1 including the elevator 9 and the mechanical parking device 11 is stopped.

A separate camera, a video camera, a digital camera, or the like is used as the camera 31, but an infrared camera may also be partially used, or a smart phone may be used. The emergency stop button 27 , camera 31 , and sound pickup device 33 are attached to the side wall or ceiling of the equipment frame 3 forming the boarding/alighting room 5 . A human detector 29 is installed on the floor of the passenger compartment 5 .

[Parking space]
As shown in FIG. 4, the parking space 7 is provided with a mechanical parking device 11 . The mechanical parking device 11 is composed of a frame structure composed of a plurality of pillars erected on the floor of the facility frame 3 forming the parking space 7 and a plurality of beam members constructed between the pillars. The structure is provided with a plurality of storage compartments so that a plurality of vehicles 15 can be stored. Further, the mechanical parking device 11 is equipped with a storage device 13 for transporting a vehicle 15 brought in by the lifting operation of the elevator 9 to a target storage section. In this embodiment, for example, a horizontal circulation device or the like is used as the storage device 13 .

In the parking space 7 as well as in the boarding/alighting room 5 , sound collecting devices 33 , which will be described later, are installed at various locations inside the parking space 7 for detecting an abnormality inside the parking space 7 by sound. The sound collecting devices 33 are attached to various locations on the side wall or ceiling of the equipment frame 3 forming the parking space 7 . Also, the sound collecting device 33 may be attached to various parts of the mechanical parking device 11, for example, to a support or a beam.

[Operation of the mechanical parking system]
As the operation of the mechanical parking device 13 according to the present embodiment, various operations in the parking facility 1 will be described.

(Operation at the time of warehousing)
When the user enters the vehicle 15 at the entrance 17 of the parking facility 1 by operating the operation panel 35, preparations for entering the vehicle 15 are made in the passenger compartment 5, that is, with the empty tray 37 in the passenger compartment 5. If there is, the entrance/exit door 19 is opened. The user causes the vehicle 15 to enter the boarding/alighting room 5 through the doorway 17 and stop on the tray 37 placed on the elevator 9 . When the user gets off the vehicle 15, exits from the passenger compartment 5 through the doorway 17, and closes the door 19 using the operation panel 35, the door 19 of the passenger compartment 5 is closed. After that, the parking facility 1 automatically operates, and the vehicle 15 is conveyed downward while being placed on the tray 37 by the elevator 9, and is delivered to the storage device 13 of the mechanical parking device 11 in the parking space 7. be. The storage device 13 transports the vehicle 15 to the intended storage compartment inside the mechanical parking device 11 and stops.

(Operation when leaving the garage)
At the time of leaving the vehicle 15, when the user operates the operation panel 35 to leave the parking facility 1 at the entrance 17 of the parking facility 1, the parking facility 1 automatically operates, and the vehicle 15 is operated by the storage device 13 of the mechanical parking device 11. It is carried out from the storage compartment, transferred to the elevator 9, and transported upward while being placed on the tray 37 by the elevator 9. When it reaches the boarding/alighting room 5, the door 19 of the boarding/alighting room 5 is opened. The user enters the passenger compartment 5 through the doorway 17, drives the vehicle 15 to exit the parking facility 1, and then closes the door 19 using the operation panel 35 again. The entrance/exit door 19 is closed. The above is the operation of entering and exiting the parking facility 1 .

<Structure of main part>
Next, an abnormality detection system installed in the parking facility 1 according to this embodiment will be described.
The abnormality detection system installed in the parking facility 1 according to the present embodiment is a parking facility abnormality detection system that detects an abnormality in the parking facility 1, and is a sound collecting device 33 that collects the sound inside the parking facility 1. and a sound pickup information receiving unit 41 that receives sound picked up by the sound pickup device 33 as a sound signal, and a sound pickup information analysis unit 43 that analyzes the sound signal. An analysis result determination unit that compares a sound signal collected in advance as a steady sound with a new sound signal collected for each vehicle entry/exit operation, and analyzes whether the new sound signal differs from the steady sound. 51.

FIG. 5 is a block diagram showing the configuration of the abnormality detection system for parking facilities according to the present embodiment. The abnormality detection system for parking facilities includes a sound pickup device 33 that picks up the sound inside the passenger compartment 5 or the parking space 7, a sound pickup information receiving unit 41 that receives a sound signal from the sound pickup device 33, and a sound pickup A sound collection information analysis unit 43 that analyzes the sound signal (information) from the information reception unit 41 and outputs a control signal for controlling the operation of the parking facility.

A control signal from the collected sound information analysis section 43 is transmitted to the parking device control section 45, and the parking device control section 45 controls the operation of the mechanical parking device 11 in the parking facility 1 based on the control signal. The abnormality detection system is installed on a control panel (not shown) of the parking facility 1, and includes a CPU, a ROM, a RAM, and a storage. and software as a control program for operating the anomaly detection system inside the computer.

In addition, an abnormality detection system issues an abnormality signal to a computer placed in a department that manages the parking facility 1, for example, a manager's office or a security company, so as to notify the manager or security guard of the abnormality. .

[Sound pickup equipment]
The sound collecting device 33 is configured by a microphone, for example. The microphone may be of a single structure or an array structure, and may be either monaural or stereo. Further, the sound collecting device 33 may be an electronic device having a plurality of microphone elements, such as a video camera, a digital camera, a smartphone, a PC with a sound collecting function, or the like, which can collect sound data. , may be used in combination. When multiple (two or more) microphones are installed, the microphones may be installed at two or more locations such as walls, doors, pillars, beams, floor surfaces, or corners of the parking facility 1. When installing an electronic device (one or more) equipped with a plurality of microphone elements, the electronic device may be installed in one or more places on the wall, door, pillar, beam, floor, or corner of the parking facility 1. good. The sound collecting device 33 is basically installed on a wall surface, a pillar, or a beam. For example, in the passenger compartment 5, the sound collecting device 33 can be arranged on the wall or behind the entrance guide mirror 25 or the like.

In FIG. 5, a plurality of sound collecting devices 33 (1, 2, 3, . . . n) are displayed, and each sound collecting device 33 corresponds to an individual microphone element. , one of the sound collecting devices 33 corresponds to one microphone in the case of a monaural microphone, and two of the sound collecting devices 33 correspond to one microphone in the case of a two-channel stereo microphone. The sound pickup device 33 of is in charge of picking up the sound on the right side or picking up the sound on the left side. The same applies to electronic equipment with a sound pickup function.

[Sound pickup information receiver]
The collected sound information receiving unit 41 receives a sound signal from a sound collecting device 33 such as a microphone or a video device. When a single sound collecting device such as a microphone or a video camera is equipped with a plurality of microphone elements, each microphone element 33 receives a sound signal. The collected sound information analysis unit 43 analyzes the sound signal from the collected sound information reception unit 41 and determines whether or not there is an abnormality in the parking device.

[Acquisition information analysis part]
The collected sound information analysis unit 43 includes a collected sound information conversion unit 47 that receives the sound signal from the collected sound information reception unit 41, a conversion information processing unit 49 that receives conversion data from the collected sound information conversion unit 47, and a conversion information processing unit 49 that receives converted data from the collected sound information conversion unit 47. An analysis result determination unit 51 that receives processed data from the information processing unit 49; and a non-stationary sound storage unit 55 for storing data.

(Structure of steady sound storage unit and unsteady sound storage unit)
As shown in FIG. 5, the stationary sound storage unit 53 is connected to the conversion information processing unit 49 via a signal line a, and is connected to the analysis result determination unit 51 via a signal line b. The unsteady sound storage unit 55 is connected to the analysis result determination unit 51 via a signal line c. Of the signal lines a, b, and c, the signal line a is a unidirectional signal line for transmitting data from the conversion information processing section 49 to the stationary sound storage section 53 . On the other hand, the signal line b is a bi-directional signal line for mutually transmitting and receiving data between the analysis result determination unit 51 and the stationary sound storage unit 53 . The signal line c is also a bi-directional signal line for mutually transmitting and receiving data between the analysis result determination unit 51 and the unsteady sound storage unit 55 . The reason why the functions of the respective signal lines are different is that, in the case of the signal line a, it is only necessary to write analysis data as a stationary sound from the conversion information processing section 49 to the stationary sound storage section 53, and the conversion information processing section 49 can This is because there is no need to read stored data as stationary sounds from the sound storage unit 53 and process them. On the other hand, the signal lines b and c are used by the analysis result determination unit 51 to instruct the steady sound storage unit 53 and the non-stationary sound storage unit 55 to transmit necessary stored data, This is because it is necessary to write and read stored data with the stationary sound storage unit 55 .

(Sound pickup information conversion unit and conversion information processing unit)
The collected sound information conversion unit 47 converts the sound signal from the collected sound information reception unit 41 into a frequency spectrum by A/D converting the signal in the digital data format to create converted data. The conversion information processing unit 49 performs array signal processing on the converted data as sound pickup information from the sound pickup information conversion unit 47, and further performs analysis processing to extract the type, intensity, pitch, etc. of the sound, which are used as abnormality determination elements. Generate analysis results. Analytical processing of the converted data is executed by a method suitable for the interval, arrangement, etc. of the sound collecting devices 33, and analysis results such as sound type, sound pressure level, sound generation position, generation time, etc. are obtained. Array signal processing is processing a sound signal for each sound collecting device 33, thereby identifying the sound source position of a stationary sound or a non-stationary sound. By specifying the position of the sound source in advance, the sound from the place where the non-steady sound is generated, the machine abnormality, or the sound when the non-steady sound is generated from another place or factor, If there is a person or animal in the aisle of the vehicle 15, or if there is a person or animal inside the vehicle 15, it can be distinguished. An analysis result of specifying the sound source position of the steady sound is stored in the steady sound storage unit 53 . Here, the conversion data is an example of collected sound information.

(Analysis result judgment part)
The analysis result determination unit 51 determines whether or not an abnormality has occurred inside the parking facility 1 based on the analysis result from the conversion information processing unit 49, and controls the operation of each device or device of the parking facility 1. Generate a control signal to In order for the analysis result determination unit 51 to perform the determination process, the collected sound information analysis unit 43 acquires the steady-state collected sound information in advance based on the analysis result of the conversion information processing unit 49, and uses the signal line as the steady sound information. It is stored in the stationary sound storage unit 53 through the a. Basically, the analysis result determination unit 51 determines that a non-stationary sound deviates from information collected as a stationary sound with a threshold value. However, a system that incorporates AI technology, constantly collects and analyzes sound pressure information, and continues to self-compensate for threshold values may be adopted.

(Function of steady sound storage unit)
The stationary sound storage unit 53 stores information about sounds normally generated inside the parking facility 1, that is, stationary sounds. The steady sound is a sound that is determined to be normally emitted by each operating unit as a result of the analysis result determination unit 51 performing determination processing on the sound analysis data. , occurrence time, etc. In addition, the analysis result determination unit 51 compares the collected sound information as the new sound signal actually transmitted and the information of the stationary sound under the actual operation state of the parking facility 1, and determines the new sound signal being collected. is a stationary sound or a non-stationary sound.

(Function of non-stationary sound storage unit)
The unsteady sound storage unit 55 stores and stores information on sounds that are not normally generated inside the parking facility 1 but are generated when an abnormality occurs, that is, information on unsteady sounds. The unsteady sound is a sound that is not normally generated by each operating unit, or is generated in a normal environment of the parking facility 1, as a result of the analysis result determination unit 51 performing determination processing on sound analysis data as a new sound signal. It is a sound that does not have any sound, that is, for example, a sound that is determined to be a human or animal voice, and is defined by the sound pressure level, sound generation position, generation time, etc. peculiar to those sounds. From a different point of view, the non-stationary sound is information about the sound that deviates from the data stored as the stationary sound in the stationary sound storage unit 53 as a result of the analysis result determination unit 51 performing determination processing on the analysis data of the sound as the new sound signal. It is also the sound that is output as a determination result when it is detected.

On the other hand, the parking device control unit 45 provided for controlling the entry/exit operation of the vehicle 15 inside the parking facility 1 controls the overall entry/exit operation of the vehicle 15 in the mechanical parking device 11, and detects an abnormality. Based on an instruction from the system, control is performed to continue or stop the operation of the mechanical parking device 11 . When the entering/leaving operation processing unit 57 receives a notification from the analysis result determination unit 51 that the information about the sound during operation deviates from the information about the steady sound stored in the steady sound storage unit 53, the parking facility The operation processing of the mechanical parking device 11 is controlled according to the determination result that the sound is non-steady sound, such as stopping the operation.

<Action of main parts>
Next, an abnormality detection operation in the parking facility 1 will be described as an operation of the abnormality detection system according to this embodiment.

[Abnormality detection operation]
After the vehicle 15 is stored in the mechanical parking device 11 installed in the parking space 7, the abnormality detection system detects normal mechanical Only sounds, or normal environmental sounds, dominate. However, a person or animal may be left behind in the parking facility 1 due to a malfunction of the device for some reason, a mistake, an accident, or the like. The anomaly detection system performs an anomaly detection operation to respond to such situations.

(Learning processing operation of anomaly detection system)
In this embodiment, a learning operation of classifying and storing stationary sounds and non-stationary sounds is performed before the anomaly detection system actually operates. In this learning operation, in order to memorize the stationary sound, the parking equipment 1 is operated in a normal state, and the operation of entering and exiting is performed under a condition controlled so that no trouble occurs, and the parking operation is performed in this normal state. Alternatively, the sound when leaving the parking lot is collected by the sound collecting device 33 installed at various places in the parking facility 1, received by the collected sound information receiving unit 41, and received by the collected sound information conversion unit 47 as a sound signal. is A/D-converted into a frequency spectrum in digital data format.

(Conversion information processing part)
The conversion information processing unit 49 performs array signal processing on the collected sound information from the collected sound information conversion unit 47, further analyzes the sound, extracts the type of sound, strength, pitch, etc., and generates judgment elements. By performing array signal processing, the sound source position of the stationary sound is specified and stored in the stationary sound storage unit 53 .

(Analysis result judgment unit)
The analysis result determination unit 51 compares a sound signal collected in advance as a steady sound with a new sound signal collected for each vehicle entry/exit operation, and determines whether the new sound signal is different from the steady sound. to parse Specifically, a new sound signal picked up for each entry/exit work of the vehicle 15 is converted by the sound pickup information conversion unit 47 and transmitted to the conversion information processing unit 49, and the conversion information processing unit 49 determines the analysis result. By comparing the new sound signal with the steady sound transmitted to the unit 51 and stored in the steady sound storage unit 53, an abnormality has occurred in the parking device based on the result of analysis by the analysis result determination unit 51. Determine whether or not In this learning processing operation, if the pre-stored steady sound and the new sound signal are similar, they are stored in the steady sound storage unit 53 as they are. It is stored in the stationary sound storage unit 53 as sound information.

Furthermore, even while the vehicle 15 is stored, the sound of the vehicle 15 being stored in a normal state is picked up by the sound pickup devices 33 installed at various locations of the parking facility 1, and the collected sound information receiving unit 41 picks up the sound. received by Subsequent processing operations are the same as when the sound during the above-described entering operation or exiting operation is collected by the sound collecting devices 33 installed at various locations in the parking facility 1 . In the learning processing operation, while the vehicle 15 is stored, the various devices in the parking facility 1 are normal, and the atmosphere (that is, quiet state) of only normal mechanical sounds or normal environmental sounds. dominates parking facility 1. Therefore, no abnormality has occurred, the analysis result determination unit 51 determines that the sound is stationary, and stores the collected sound information in the stationary sound storage unit 53 .

(Classification of steady sound and unsteady sound)
The classification of stationary sounds and non-stationary sounds is as defined in the above description, but another expression example can be explained as follows. Steady sounds are sounds that can be judged as environmental sounds, etc., including normal operation sounds of machines, normal sounds of electronic equipment, operating sounds of air conditioners, etc. Non-stationary sounds are human or animal voices, or Action sounds emitted by humans or animals, for example, sounds generated when walking, sounds of hitting entrance doors or walls, sounds when doors of vehicles 15 are opened and closed, and steady sounds emitted by machines, electronic devices, air conditioning equipment, etc. are sounds with different characteristics.

Further, the classification of stationary sound and non-stationary sound according to the difference in sound pickup locations can be performed, for example, as follows.
(a) The stationary sound of the boarding/alighting compartment 5 is the mechanical operation from immediately after the entrance/exit door 19 is closed in relation to the series of operations when the vehicle 15 enters and leaves the vehicle 15 until the vehicle 15 leaves the boarding/alighting compartment 5 by the elevator 9. environmental sounds including sounds, announcements in the boarding/alighting room 5, operating sounds of air conditioners, and the like. In relation to the series of operations when the vehicle 15 leaves the garage, the vehicle 15 arrives at the boarding/alighting room 5 by the elevator 9, and the mechanical operation sound, the announcement in the boarding/alighting room 5, and the air-conditioning are generated until just before the entrance/exit door 19 is opened. Environmental sounds, etc., including operating sounds of equipment, etc.
(b) Stationary sounds of the parking space 7 include environmental sounds including operation sounds of the elevator 9 when entering and leaving the parking space, operation sounds of the storage device 13, operation sounds of the air conditioner, and the like.

(Abnormality detection processing operation of the abnormality detection system)
In the abnormality detection processing operation, the sound when the parking facility 1 is entering or exiting the parking facility in daily operation is picked up as a new sound signal by the sound pickup devices 33 installed in various places of the parking facility 1. , is received by the collected sound information receiving section 41, and the collected sound information converting section 47 A/D converts the sound signal into a frequency spectrum in a digital data format. Next, the conversion information processing unit 49 performs array signal processing on the collected sound information from the collected sound information conversion unit 47, further performs analysis processing, extracts the type of sound, strength, pitch, etc., and generates judgment elements. Array signal processing identifies the position of the sound source of the stationary sound. Next, based on the analysis result from the transformation information processing unit 49, the analysis result determination unit 51 reads the stationary sound as stored data from the stationary sound storage unit 53, and reads the stationary sound as a new sound signal. It is determined whether or not an abnormality has occurred inside the parking facility 1 by comparing it with the steady sound.

In the daily operation of processing the operating state of the parking facility 1, the determination result of the analysis result determination unit 51 differs between when no trouble occurs in the parking facility 1 and when trouble occurs. Since the collected sound information when no trouble occurs in the parking facility 1 does not deviate from the range of the stationary sound as the stored data read from the stationary sound storage unit 53, it is determined as the stationary sound and no abnormality occurs. It is determined that there is no On the other hand, when trouble occurs in the parking facility 1, the collected sound information deviates from the range of the stationary sound read from the stationary sound storage unit 53 as the stored data by exceeding a certain threshold. It is determined that the sound is stationary and that an abnormality has occurred. The non-stationary sound, which is the collected sound information at this time, is transmitted from the analysis result determination unit 51 to the non-stationary sound storage unit 55 and stored.

It should be noted that the non-steady sound stored in the non-steady sound storage unit 55 is accumulated by continuing the abnormality detection processing operation in the daily operating state of the parking facility 1 for a certain period of time. Then, in the determination processing operation, the analysis result determination unit 51 reads data of the steady sound from the steady sound storage unit 53 and performs determination, and reads data of the non-steady sound from the non-steady sound storage unit 55 and performs determination. By continuously executing such a determination processing operation, the accuracy of the determination result in the analysis result determination unit 51 is improved.

Furthermore, the anomaly detection system detects the sound of the parking facility 1 during daily operation even while the vehicle 15 is stored in the parking space 7, i.e., while the entry/exit operation is not being performed. The sound is continuously picked up by the sound pickup device 33 installed in each place, and received by the sound pickup information receiving section 41 . Subsequent processing operations are the same as when the sound during the above-described entering operation or exiting operation is collected by the sound collecting devices 33 installed at various locations in the parking facility 1 .

Even in the daily operation of processing the operating state of the parking facility 1, while the vehicle 15 is stored, the analysis results differ between when no trouble occurs in the parking facility 1 and when trouble occurs. The determination result of the determination unit 51 is different. When no trouble has occurred in the parking facility 1, the collected sound information as the new sound signal does not deviate from the stored data as the steady sound read out from the steady sound storage unit 53, so that it is determined as the steady sound, and the abnormality is detected. is determined not to have occurred. On the other hand, when trouble occurs in the parking facility 1, the collected sound information as the new sound signal deviates from the stored data as the steady sound read out from the steady sound storage unit 53 by exceeding a certain threshold. Therefore, it is determined that the sound is a non-stationary sound and that an abnormality has occurred. The non-stationary sound, which is the collected sound information at this time, is transmitted from the analysis result determination unit 51 to the non-stationary sound storage unit 55 and stored.

(Response to anomaly detection)
(A) There are, for example, the following measures to be taken when an abnormality is detected.
1. If the parking facility 1 is operating, it is stopped. For example, it is conceivable that the elevator 9 on which the vehicle 15 is placed starts to move while a person or animal is left behind inside the vehicle 15. 11 is stopped.
2. Simultaneously with the stop processing of the mechanical parking device 11 including the elevator 9, an abnormality signal is issued to the control room, the security company, and the like.
3. Even if the parking facility 1 is not operating, the above 2. is performed at the stage of detecting the unsteady sound. is processed as described in .
4. A speaker (not shown) is installed inside the boarding/alighting room 5 or the parking space 7, and a voice such as "I will rescue you, so please wait" is played repeatedly.
5. In the event of a power failure, an emergency light (not shown) is installed inside the passenger compartment 5 and the parking space 7, and the emergency light is turned on by an emergency power supply.
6. In the boarding/alighting room 5, when a person has gotten off the vehicle 15 and the entrance/exit door 19 is closed, the person may voluntarily evacuate through the evacuation exit 21.例文帳に追加

Specifically, for example, when the parking facility 1 is activated while a person or an animal remains inside the vehicle 15, if it is a person, the words "help me", "help me", "hey", etc. This is stored as a non-stationary sound in the non-stationary sound storage section, and is judged by the analysis result judgment section 51 to stop the mechanical parking device 1. - 特許庁In the case of animals, sounds such as barks and barks are recognized as sounds that are not normal sounds and are detected as non-steady sounds. At this point, the operation of the parking facility 1 is stopped.

Also, when an abnormal sound of the machine is detected, the operation of the parking facility 1 is stopped. Along with this, there are cases where unsteady sounds of humans or animals are detected. ~ 5. are also performed.

(B) There are, for example, the following measures to be taken when an abnormality is detected in accordance with the installation location of the sound pickup device 33 and the sound pickup situation.
7. In the case where the sound collecting device 33 is installed only in the boarding/alighting room 5, if an unsteady sound is detected inside the boarding/alighting room 5 during the operation of the elevator 9/storage device 13, the mechanical operation inside the parking space 7 is stopped. do.
8. In the case where the sound collecting device 33 is installed only in the parking space 7, if an unsteady sound is detected in the parking space 7 when a user enters or exits the passenger compartment 5, mechanical operation in the parking space 7 is stopped. do.
9. When an unsteady sound is detected inside the parking space 7 during operation of the elevator 9 and the storage device 13, mechanical operations inside the boarding/alighting room 5 and the parking space 7 are stopped.
10. When the sound collecting device 33 is installed in both the boarding/alighting room 5 and the parking space 7, when an unsteady sound is detected in the parking space 7 when the user enters/exits the inside of the boarding/alighting room 5, the parking space 7 stop mechanical movement inside the
11. When an unsteady sound is detected inside the boarding/alighting room 5 or the parking space 7 or both during the operation of the elevator 9 or the storage device 13, the mechanical operations inside the boarding/alighting room 5 and the parking space 7 are stopped.

(C) Other measures Other measures to be taken when an abnormality is detected include, for example, the following.
12. Ask users to say out loud "Help me" or "Help me" or "Hey" in case of emergency. The feature of the waveform of the voice is learned by the abnormality detection system, and the operation of the parking facility 1 is stopped when the same waveform is detected. In this case, in consideration of erroneous detection, the user may be instructed to "say multiple times". In order to avoid danger, the abnormality detection system is preferably a system that stops the operation of the parking facility 1 when the same waveform is detected even once.

As described above, the parking facility abnormality detection system according to the present embodiment is a parking facility abnormality detection system that detects an abnormality in the parking facility, and includes the sound collecting device 33 that collects the sound inside the parking facility 1. , a sound pickup information receiving unit 41 that receives sound picked up by the sound pickup device 33 as a sound signal, and a sound pickup information analysis unit 43 that analyzes the sound signal. An analysis result determination unit 51 that compares the collected sound signal with the new sound signal collected for each vehicle entry/exit operation, and analyzes whether the new sound signal is different from the steady sound. have

This makes it possible to detect that a person or animal has been trapped inside the boarding/disembarking room or parking space of the parking facility, or that an abnormality has occurred in the mechanical parking system, compared to systems that detect anomalies using cameras or radio waves. Abnormalities can be detected by analyzing sound signals. In addition, the safety of humans or animals is ensured by controlling the operation of the parking facility based on the signal that detected the abnormality.

The collected sound information analysis unit 43 also includes a collected sound information conversion unit 47 that converts the sound signal received by the collected sound information reception unit 41 into digital data, and analyzes the converted data from the collected sound information conversion unit 47. A conversion information processing unit 49 that generates an analysis result as an abnormality determination element based on the conversion information processing unit 49, and an analysis result determination unit that determines whether an abnormality has occurred inside the parking facility based on the analysis result from the conversion information processing unit 49. 51, a stationary sound storage unit 53 for storing stationary sound information obtained by processing in the conversion information processing unit 49 and the analysis result determination unit 51, and a non-stationary sound storage unit 55 for storing stationary sound information.

Compared to systems that detect abnormalities with cameras or radio waves, this makes it possible to detect that a person or animal has been trapped inside the boarding/disembarking room or parking space of the parking facility, or that an abnormality has occurred in the mechanical parking system. The safety of humans or animals is ensured by analyzing the received sound signal, detecting anomalies, and controlling the operation of the parking facility.

A microphone or an electronic device having a microphone element is used as the sound pickup device 33 .

As a result, a microphone or other electronic device equipped with a microphone element can be used as a sound pickup device for obtaining a sound signal, compared to a device that detects an abnormality with a camera or radio waves, thereby improving the system configuration. degree of freedom is improved. In addition, unlike cameras and laser sensors, abnormalities that cannot be identified by images can be detected by analyzing them as sound signals. Specifically, it is possible to detect anomalies that occur outside the camera's field of view, that is, in the camera's blind spot, detect people or animals trapped inside the vehicle, and detect vehicles with the engine running.

In addition, the conversion information processing unit 49 performs array signal processing on the collected sound information obtained from the sound collecting device 33 in the analysis processing, and enables to specify the sound source position of the stationary sound or the non-stationary sound.

This makes it possible to specify the sound source position of stationary or non-stationary sounds.

As described above, the embodiment of the present invention has been described with reference to one embodiment. is not limited to these embodiments.

For example, in the present embodiment, the storage device 13 has been described as a horizontal circulation type device, but it is not limited to this, and may be a puzzle plane circulation type, multi-layer circulation type, plane reciprocating type, circular circulation type, elevator type, vertical circulation type, or the like. , other types of parking devices may be used and are not limited to this embodiment.

Further, in the present embodiment, the parking facility 1 has been described as a top boarding type in which the parking space 7 is arranged below the passenger compartment 5. However, the present invention is not limited to this, and the parking space 7 is arranged above the passenger compartment 5. Parking facilities such as a lower entry type parking facility, a direct entry type parking facility in which the boarding / alighting room 5 is arranged in any part inside the parking space 7, or an intermediate entry type parking facility The method of boarding the vehicle may be of any type, and is not limited to this embodiment.

In addition, although it has been explained that the control program for the abnormality detection system is built in the computer installed in the control panel of the parking facility 1, the present invention is not limited to this, and the control program for operating the abnormality detection system may be configured in the control panel. It may be incorporated in a computer that controls the mechanical parking device 11 that is installed.

1 Parking facility 3 Facility frame 5 Boarding room 7 Parking space 9 Elevator 11 Mechanical parking device 13 Storage device 15 Vehicle 17 Entrance 19 Entrance door 21 Evacuation exit 23 Evacuation exit door 25 Entrance guide mirror 27 Emergency stop button 29 Human detector 31 Camera 33 Sound collecting device 35 Operation panel 37 Tray 41 Sound collecting information receiving unit 43 Sound collecting information analyzing unit 45 Parking device control unit 47 Sound collecting information conversion unit 49 Conversion information processing unit 51 Analysis result determination unit 53 Stationary sound storage unit 55 Unsteady Sound storage unit 57 Entry/exit operation processing unit

Claims (4)

A parking facility abnormality detection system for detecting an abnormality in a parking facility,
a sound pickup device that picks up the sound inside the parking facility;
a sound pickup information receiving unit that receives the sound picked up by the sound pickup device as a sound signal;
a sound collection information analysis unit that analyzes the sound signal;
The sound collection information analysis unit compares the sound signal collected in advance as a steady sound with a new sound signal collected for each vehicle entry/exit operation, and compares the new sound signal with the steady sound. Having an analysis result determination unit that analyzes whether it is different,
Anomaly detection system for parking facilities. The collected sound information analysis unit
a sound pickup information conversion unit that converts a sound signal received by the sound pickup information reception unit into digital data;
a conversion information processing unit that analyzes converted data from the sound pickup information conversion unit and generates an analysis result that serves as an abnormality determination element;
The analysis result determination unit that determines whether an abnormality has occurred inside the parking facility based on the analysis result from the conversion information processing unit;
a stationary sound storage unit for storing stationary sound information obtained by processing in the conversion information processing unit and the analysis result determination unit;
a non-steady sound storage unit that stores non-steady sound information obtained by processing in the determination processing of the analysis result determination unit;
The abnormality detection system for parking equipment according to claim 1, comprising: A microphone is used as the sound collecting device, or an electronic device equipped with a microphone element is used.
The abnormality detection system for parking facilities according to claim 1 or 2. In the analysis processing, the conversion information processing unit performs array signal processing on the sound collection information obtained from the sound collection device, and makes it possible to specify the sound source position of the stationary sound or the non-stationary sound.
The abnormality detection system for parking facilities according to any one of claims 1 to 3.

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