WO2023223430A1

WO2023223430A1 - Vehicle monitoring system, ground wireless device, on-board device, control circuit, storage medium, and vehicle monitoring method

Info

Publication number: WO2023223430A1
Application number: PCT/JP2022/020546
Authority: WO
Inventors: 兼治中川; 浩西本
Original assignee: 三菱電機株式会社
Priority date: 2022-05-17
Filing date: 2022-05-17
Publication date: 2023-11-23
Also published as: JPWO2023223430A1

Abstract

A vehicle monitoring system (300) comprises a ground wireless device (190), and an on-board device (210). The ground wireless device (190) modulates image information of an image captured by a platform monitoring camera (120) into a first modulation signal in a specified video signal band, the platform monitoring camera (120) being able to capture a range in which the open and closed states of doors of a vehicle (200) stopping at a station (100) are checkable; modulates facility information, which includes open and close information indicating the open and closed states of a platform door (130) installed on a station platform (110), into a second modulation signal in a specified audio signal band; and transmits a multiplexed signal produced by multiplexing the first modulation signal and the second modulation signal to the vehicle (200). The on-board device (210) receives and demodulates the multiplexed signal, and displays the image with which the open and closed states of the doors of the vehicle (200) is checkable, and the open and closed states of the platform door (130).

Description

Vehicle monitoring system, ground wireless device, onboard device, control circuit, storage medium, and vehicle monitoring method

The present disclosure relates to a vehicle monitoring system, a terrestrial wireless device, an on-board device, a control circuit, a storage medium, and a vehicle monitoring method for monitoring railway vehicles.

In train operation, it is necessary to confirm the safety of the platform before the train departs. In the case of medium-length trains, the driver and conductor are generally on board the same train. When checking the safety of a train at the time of train departure, the conductor checks the safety of the vehicle door area based on images from the platform surveillance camera video confirmation monitor installed on the station platform, and performs operations such as opening and closing the platform doors and opening and closing the vehicle doors. Perform opening/closing operations, etc. At this time, the conductor had to get off the train to the platform in order to make a parallax call to the monitor for checking the platform surveillance camera image, and to operate the control panel installed on the platform door. In order to reduce the workload of the conductor, Patent Document 1 discloses a technique for controlling the opening and closing of the platform door corresponding to the vehicle door of the vehicle.

Patent No. 3258983

In recent years, there has been a shift toward one-man operation, where only the driver is on board the train and no conductor is on board. In single-man operation, the driver must perform safety checks when opening and closing vehicle doors. However, according to the above-mentioned conventional technology, it is assumed that a driver and a conductor are on board. Therefore, there was a problem in that it could not be applied to one-man operation. Furthermore, since the driver also has to check the signals in the direction of travel, it is difficult for the driver to get off the train's driver's seat and onto the platform when checking the safety of the train when it departs.

The present disclosure has been made in view of the above, and aims to provide a vehicle monitoring system that allows a driver to easily check the status of a station platform where a vehicle is stopped.

In order to solve the above-mentioned problems and achieve the purpose, the vehicle monitoring system of the present disclosure uses an image of an image taken by a platform surveillance camera that can capture a range in which the open/closed state of the door of a vehicle stopped at a station can be confirmed. information is modulated into a first modulated signal in a specified video signal band, and equipment information including opening/closing information indicating the open/closed state of a platform door installed on a station platform is modulated into a second modulated signal in a specified audio signal band. a ground radio device that modulates the first modulated signal and multiplexes the second modulated signal and transmits the multiplexed signal to the vehicle, and receives the multiplexed signal and demodulates the multiplexed signal to check the opening/closing status of the vehicle door. The present invention is characterized by comprising an on-vehicle device that displays available images and the open/closed state of the platform door.

The vehicle monitoring system according to the present disclosure has the effect that the driver can easily check the status of the platform of the station where the vehicle is stopped.

A diagram showing a configuration example of a vehicle monitoring system according to Embodiment 1 A diagram showing a configuration example of a video control unit included in the terrestrial wireless device according to Embodiment 1. A diagram showing an example of multiplexed signals generated by a video control unit included in the terrestrial wireless device according to Embodiment 1. A diagram showing a configuration example of an on-vehicle device according to Embodiment 1. A diagram showing an example of a display on a display section included in the on-vehicle device according to Embodiment 1. Flowchart illustrating operations from when the ground wireless device transmits a multiplexed signal to the on-board device to when the on-board device performs display in the vehicle monitoring system according to Embodiment 1. A diagram showing an example of the configuration of a processing circuit in a case where the processing circuit realizing the vehicle monitoring system according to Embodiment 1 is configured by a processor and a memory. A diagram showing an example of a processing circuit when the processing circuit realizing the vehicle monitoring system according to Embodiment 1 is configured with dedicated hardware. A diagram showing a configuration example of a vehicle monitoring system according to Embodiment 2 A diagram showing a configuration example of an on-vehicle device according to Embodiment 2 Flowchart showing the operation of the on-board device transmitting a control signal to the terrestrial wireless device in the vehicle monitoring system according to Embodiment 2 A diagram showing a configuration example of a vehicle monitoring system according to Embodiment 3 A diagram showing a configuration example of an on-vehicle device according to Embodiment 3 Flowchart illustrating an operation in which an on-board device transmits a third modulated signal obtained by modulating a control signal to a terrestrial wireless device in the vehicle monitoring system according to Embodiment 3.

Below, a vehicle monitoring system, a ground wireless device, an on-vehicle device, a control circuit, a storage medium, and a vehicle monitoring method according to embodiments of the present disclosure will be described in detail based on the drawings.

Embodiment 1.
FIG. 1 is a diagram showing a configuration example of a vehicle monitoring system 300 according to the first embodiment. The vehicle monitoring system 300 includes a terrestrial wireless device 190 and an on-vehicle device 210. The vehicle monitoring system 300 is a system that monitors the opening/closing state of a door (not shown) provided in the vehicle 200 that stops at the station 100. At the station 100 where the vehicle 200 stops, a station platform 110, a platform monitoring camera 120, a platform door 130, station equipment 140, and a ground radio device 190 are installed.

The platform monitoring camera 120 is a camera that is installed on the station platform 110 and is capable of photographing a range in which the open/closed states of the doors of the vehicles 200 stopping at the station 100 can be confirmed. In the example of FIG. 1, three platform monitoring cameras 120 are installed on the station platform 110, but there are multiple platform monitoring cameras 120 on the station platform 110 corresponding to the length of the vehicle 200 stopping at the station 100. will be installed. The platform monitoring camera 120 outputs to the ground radio device 190 image information of an image taken in a range where the open/closed state of the door of the vehicle 200 stopped at the station 100 can be confirmed. The station platform 110 may output to the terrestrial wireless device 190 information indicating whether or not it is operating normally, along with the above-mentioned image information.

The platform door 130 is installed on the station platform 110 and opens and closes in response to opening and closing of the door of the vehicle 200. The platform door 130 outputs opening/closing information indicating the open/closed state of the platform door 130 to the ground wireless device 190 as equipment information. The platform door 130 may output to the ground wireless device 190 information indicating whether or not it is operating normally, along with the above-mentioned equipment information.

The station equipment 140 supplies power to the ground radio device 190 and outputs information from a command center (not shown) that manages the operation of the vehicle 200 as equipment information. The station equipment 140 also obtains failure information about the platform monitoring camera 120, platform door 130, etc. from the ground wireless device 190, and obtains image information captured by the platform monitoring camera 120. The station equipment 140 may display the information acquired from the ground radio device 190 by itself, or may transmit the information to the aforementioned command center (not shown) or the like.

The ground wireless device 190 transmits information acquired from the platform monitoring camera 120, platform door 130, and station equipment 140 to the on-board device 210 mounted on the vehicle 200. The terrestrial wireless device 190 includes a terrestrial transmission control section 150, a video control section 160, and a terrestrial wireless communication section 170.

The ground transmission control unit 150 outputs equipment information acquired from the station equipment 140 to the video control unit 160. Furthermore, the ground transmission control unit 150 outputs information acquired from the platform monitoring camera 120 and the platform door 130 to the station equipment 140. In the example of FIG. 1, the ground transmission control unit 150 acquires information from the platform surveillance camera 120 and platform door 130 via the video control unit 160, but it also acquires information from the platform surveillance camera 120 and platform door 130 directly. It's okay.

The video control unit 160 modulates the image information of the image taken by the platform monitoring camera 120 into a first modulation signal of a prescribed video signal band, and indicates the open/closed state of the platform door 130 installed on the station platform 110. Equipment information including opening/closing information is modulated into a second modulated signal in a specified audio signal band, the first modulated signal and the second modulated signal are multiplexed, and a multiplexed signal is generated and output. FIG. 2 is a diagram illustrating a configuration example of video control unit 160 included in terrestrial wireless device 190 according to the first embodiment. The video control section 160 includes a modulation section 161, a modulation section 162, and a frequency multiplexing section 163.

The modulation unit 161 modulates the image information of the image taken by the platform surveillance camera 120, which is capable of photographing the range in which the open/closed state of the door of the vehicle 200 stopped at the station 100 can be confirmed, into a specified video signal band. This is the modulation section. The modulation method for the video signal band in the modulation section 161 may be an analog modulation method, such as an FM (Frequency Modulation) modulation method, or a digital modulation method, and is not limited to a specific modulation method. Modulating section 161 outputs the modulated signal to frequency multiplexing section 163 as a first modulated signal.

The modulation unit 162 converts equipment information acquired from the station equipment 140 via the ground transmission control unit 150 and equipment information, which is opening/closing information indicating the opening/closing state of the platform door 130 installed on the station platform 110, into a specified audio signal. This is a second modulation section that performs band modulation. Note that the equipment information to be modulated may include only the opening/closing information indicating the open/closed state of the platform door 130, and may not include the equipment information acquired from the station equipment 140. The modulation method for the audio signal band in the modulation section 162 includes, for example, an FM modulation method, but is not limited thereto. Modulating section 162 outputs the modulated signal to frequency multiplexing section 163 as a second modulated signal.

Frequency multiplexing section 163 multiplexes a first modulated signal obtained by modulating section 161, which is a first modulating section, and a second modulated signal, obtained from modulating section 162, which is a second modulating section. Generate a signal. Frequency multiplexing section 163 outputs the generated multiplexed signal to terrestrial wireless communication section 170.

FIG. 3 is a diagram showing an example of a multiplexed signal 400 generated by the video control unit 160 included in the terrestrial wireless device 190 according to the first embodiment. The multiplexed signal 400 shown in FIG. 3 shows, as an example, an NTSC (National Television System Committee) signal. The modulator 161 superimposes image information of an image captured by the home monitoring camera 120 onto the video signal band 401. The modulator 162 superimposes equipment information including opening/closing information indicating the opening/closing state of the platform door 130 installed on the station platform 110 onto the audio signal band 402 . Audio signal band 402 is a band different from video signal band 401. Frequency multiplexing section 163 multiplexes video signal band 401, which is a first modulated signal, and audio signal band 402, which is second modulated signal, to generate multiplexed signal 400. Note that the multiplexed signal 400 shown in FIG. 3 is just an example, and the video control unit 160 can handle signals other than NTSC signals if the band for superimposing video signals and the band for superimposing audio signals are independent. You may also use a method that uses

The terrestrial wireless communication unit 170 transmits the multiplexed signal 400 generated by the video control unit 160 to the on-board device 210 mounted on the vehicle 200.

The onboard device 210 receives the multiplexed signal 400 transmitted from the terrestrial wireless device 190 and demodulates the multiplexed signal 400. The on-board device 210 displays an image that allows confirmation of the open/closed state of the door of the vehicle 200 and the open/closed state of the platform door 130. FIG. 4 is a diagram showing a configuration example of the on-vehicle device 210 according to the first embodiment. The on-board device 210 includes an on-board wireless communication section 211, a video output section 212, and a display section 213. FIG. 4 shows an example in which the driver's seat 220 of the vehicle 200 includes the on-board device 210.

The onboard wireless communication unit 211 receives the multiplexed signal 400 from the ground wireless device 190. The on-vehicle wireless communication section 211 outputs the received multiplexed signal 400 to the video output section 212.

The video output unit 212 demodulates the multiplexed signal 400 and outputs to the display unit 213 image information of an image that allows confirmation of the open/closed state of the door of the vehicle 200 and opening/closing information indicating the open/closed state of the platform door 130.

The display unit 213 displays an image that allows confirmation of the open/closed state of the door of the vehicle 200 and the open/closed state of the platform door 130. In the example of FIG. 4, the display section 213 is installed at a location where the driver of the vehicle 200, who is sitting facing the driver's cab 221 in the driver's seat 220, can confirm the display contents of the display section 213. The display unit 213 may be included in the driver's cab 221.

FIG. 5 is a diagram showing an example of a display on the display section 213 included in the on-board device 210 according to the first embodiment. The display unit 213 simultaneously displays the open/closed state of the platform door 130 corresponding to the door of the vehicle 200 together with the image taken by the platform monitoring camera 120. In the example of FIG. 5, the display unit 213 displays the images taken by the platform surveillance camera 120 for each car, and also displays the platform door open/close state 501, which is the open/close state of the platform door 130 corresponding to the door of each car. It is displayed at the bottom right of the image. The display unit 213 may display the platform door opening/closing state 501 in different colors or using different symbols depending on whether the platform door is open or closed.

As a result, the driver of the vehicle 200 can check the display contents of the display unit 213 installed in the driver's seat 220, and can check the status of the station platform 110 and the door of the vehicle 200 even when facing the driver's cab 221. It is possible to check the open/closed state, the open/closed state of the platform door 130, etc. That is, the driver of the vehicle 200 can easily check the status of the station platform 110 of the station 100 where the vehicle 200 is stopped.

Note that in the examples of FIGS. 4 and 5, the number of display units 213 included in the on-vehicle device 210 is one, but the number is not limited to this. The on-vehicle device 210 may include a plurality of display sections 213. Further, the on-board device 210 does not display the image taken by the platform monitoring camera 120 and the open/closed state of the platform door 130 on the display unit 213 at the same time, but displays the open/closed state of the platform door 130 using another display method. is also possible. In addition, if the on-board device 210 has acquired information other than the open/closed state of the platform door 130 as equipment information, the on-board device 210 simultaneously displays information other than the open/closed state of the platform door 130 along with the image taken by the platform surveillance camera 120. You may.

FIG. 6 is a flowchart illustrating operations from terrestrial wireless device 190 transmitting multiplexed signal 400 to onboard device 210 to onboard device 210 performing display in vehicle monitoring system 300 according to the first embodiment. be. In the vehicle monitoring system 300, the video control unit 160 of the terrestrial wireless device 190 acquires image information from the platform monitoring camera 120 of an image in which the open/closed state of the door of the vehicle 200 stopped at the station 100 can be confirmed. (Step S101). The video control unit 160 also acquires equipment information from the station equipment 140 via the ground transmission control unit 150, and acquires opening/closing information indicating the open/closed state of the platform door 130 from the platform door 130 as equipment information (step S102). . The video control unit 160 modulates the image information acquired from the platform monitoring camera 120 into a first modulation signal in the video signal band 401, and converts the equipment information including opening/closing information indicating the open/closed state of the platform door 130 into the audio signal band 402. A multiplexed signal 400 is generated by modulating the second modulated signal and multiplexing the first modulated signal and the second modulated signal (step S103). The terrestrial wireless communication unit 170 transmits the multiplexed signal 400 generated by the video control unit 160 to the on-board device 210 of the vehicle 200 (step S104).

In the on-board device 210, the on-board wireless communication section 211 receives the multiplexed signal 400 (step S105). The video output unit 212 demodulates the multiplexed signal 400 received by the on-vehicle wireless communication unit 211 (step S106). The display unit 213 displays an image that allows confirmation of the open/closed state of the door of the vehicle 200 and the open/closed state of the platform door 130 (step S107).

Next, the hardware configuration of the vehicle monitoring system 300 will be explained. In the terrestrial wireless device 190, the terrestrial wireless communication unit 170 is a communication device that performs wireless communication. The terrestrial transmission control section 150 and the video control section 160 are realized by processing circuits. Further, in the on-vehicle device 210, the on-vehicle wireless communication section 211 is a communication device that performs wireless communication. The display unit 213 is a monitor such as an LCD (Liquid Crystal Display). The video output unit 212 is realized by a processing circuit. The processing circuit may be a processor and memory that executes a program stored in memory, or may be dedicated hardware. The processing circuit is also called a control circuit.

FIG. 7 is a diagram showing a configuration example of the processing circuit 90 in the case where the processing circuit realizing the vehicle monitoring system 300 according to the first embodiment is configured by the processor 91 and the memory 92. A processing circuit 90 shown in FIG. 7 is a control circuit and includes a processor 91 and a memory 92. When the processing circuit 90 includes a processor 91 and a memory 92, each function of the processing circuit 90 is realized by software, firmware, or a combination of software and firmware. Software or firmware is written as a program and stored in memory 92. In the processing circuit 90, each function is realized by a processor 91 reading and executing a program stored in a memory 92. That is, the processing circuit 90 includes a memory 92 for storing a program by which the processing of the vehicle monitoring system 300 is executed. This program can also be said to be a program for causing the vehicle monitoring system 300 to execute each function realized by the processing circuit 90. This program may be provided by a storage medium in which the program is stored, or may be provided by other means such as a communication medium.

The above program allows the terrestrial wireless device 190 to transmit image information captured by the platform monitoring camera 120, which can capture the range in which the open/closed state of the doors of the vehicle 200 stopped at the station 100, to the specified video signal band 401. 1 modulation signal, equipment information including opening/closing information indicating the opening/closing state of the platform door 130 installed on the station platform 110 is modulated into a second modulation signal in the specified audio signal band 402, and the first A first step of transmitting a multiplexed signal 400 obtained by multiplexing the modulated signal and the second modulated signal to the vehicle 200, and the on-vehicle device 210 receives the multiplexed signal 400, demodulates the multiplexed signal 400, and transmits the multiplexed signal 400 to the door of the vehicle 200. It can also be said that this is a program that causes the vehicle monitoring system 300 to execute an image that allows confirmation of the open/closed state of the platform door 130 and a second step of displaying the open/closed state of the platform door 130.

Here, the processor 91 is, for example, a CPU (Central Processing Unit), a processing device, an arithmetic device, a microprocessor, a microcomputer, or a DSP (Digital Signal Processor). The memory 92 may be a nonvolatile or volatile memory such as RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable ROM), or EEPROM (registered trademark) (Electrically EPROM). This includes semiconductor memory, magnetic disks, flexible disks, optical disks, compact disks, mini disks, and DVDs (Digital Versatile Discs).

FIG. 8 is a diagram showing an example of the processing circuit 93 in the case where the processing circuit realizing the vehicle monitoring system 300 according to the first embodiment is configured with dedicated hardware. The processing circuit 93 shown in FIG. 8 is, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a combination of these. applicable. Regarding the processing circuit, a part may be realized by dedicated hardware, and a part may be realized by software or firmware. In this way, the processing circuit can implement each of the above-mentioned functions using dedicated hardware, software, firmware, or a combination thereof.

As described above, according to the present embodiment, in the vehicle monitoring system 300, the terrestrial wireless device 190 uses the platform monitoring camera 120, which can photograph a range in which the open/closed state of the door of the vehicle 200 stopped at the station 100 can be confirmed. The image information of the image photographed is modulated into a first modulation signal in the video signal band 401, and equipment information including opening/closing information indicating the open/closed state of the platform door 130 installed on the station platform 110 is modulated into the first modulation signal in the audio signal band 402. A multiplexed signal 400 that is modulated into a second modulated signal and multiplexed with the first modulated signal and the second modulated signal is transmitted to the on-vehicle device 210 of the vehicle 200. On-board device 210 receives and demodulates multiplexed signal 400, and displays an image that allows confirmation of the open/closed state of the door of vehicle 200 and the open/closed state of platform door 130.

Thereby, the driver can easily check the status of the station platform 110 of the station 100 where the vehicle 200 is stopped. The driver of the vehicle 200 does not need to get off the driver's seat 220 to the station platform 110 in order to view the safety monitoring monitor installed at the station 100 during one-man operation, and can check safety while remaining in the driver's seat 220. Can be done. Further, the driver of the vehicle 200 can also check information about the station equipment 140 other than the platform door 130 acquired as equipment information while remaining in the driver's seat 220.

Embodiment 2.
In the first embodiment, a case has been described in which information is transmitted from the ground wireless device 190 installed at the station 100 to the on-board device 210 mounted on the vehicle 200. In Embodiment 2, a case will be further described in which a control signal is transmitted from an on-board device mounted on a vehicle to a ground radio device installed at a station.

FIG. 9 is a diagram showing a configuration example of a vehicle monitoring system 300a according to the second embodiment. The vehicle monitoring system 300a includes a terrestrial wireless device 190a and an on-vehicle device 210a. The vehicle monitoring system 300a is a system that monitors the open/closed state of a door (not shown) provided in the vehicle 200a that stops at the station 100a. A station platform 110, a platform monitoring camera 120, a platform door 130, station equipment 140, and a ground radio device 190a are installed at the station 100a where the vehicle 200a stops.

The ground wireless device 190a transmits information acquired from the platform monitoring camera 120, platform door 130, and station equipment 140 to the on-board device 210a mounted on the vehicle 200a. The terrestrial wireless device 190a includes a terrestrial transmission control section 150, a video control section 160, a terrestrial wireless communication section 170, and a terrestrial wireless communication section 170a. The terrestrial wireless communication unit 170a receives a control signal for controlling opening and closing of the platform door 130 from the on-board device 210a mounted on the vehicle 200a, and outputs it to the platform door 130. As described above, in the second embodiment, the terrestrial wireless device 190a transmits the control signal for controlling the opening and closing of the platform door 130 from the on-board device 210a mounted on the vehicle 200a to the terrestrial wireless communication unit that transmits the multiplexed signal 400. The received signal is received by a ground wireless communication unit 170a different from 170, and output to the platform door 130. In the following description, the terrestrial wireless communication unit 170 may be referred to as a first terrestrial wireless communication unit, and the terrestrial wireless communication unit 170a may be referred to as a second terrestrial wireless communication unit.

FIG. 10 is a diagram showing a configuration example of an on-vehicle device 210a according to the second embodiment. The on-board device 210a includes an on-board wireless communication section 211, a video output section 212, a display section 213, an on-board transmission control section 215, and an on-board wireless communication section 216. FIG. 10 shows an example in which a driver's seat 220a of a vehicle 200a includes an on-board device 210a. The on-board transmission control unit 215 generates a control signal that controls opening and closing of the platform door 130 based on an operation from a crew member of the vehicle 200a. The on-board wireless communication unit 216 transmits the control signal generated by the on-board transmission control unit 215 to the ground wireless device 190a. As described above, in the second embodiment, the on-board device 210a receives the control signal for controlling the opening and closing of the platform door 130 from the on-board wireless communication unit 216, which is different from the on-board wireless communication unit 211 that receives the multiplexed signal 400. It is transmitted to the terrestrial wireless device 190a. The band used when the on-board device 210a transmits a control signal to the terrestrial wireless device 190a is preferably a band that does not interfere with the multiplexed signal 400. In the following description, the on-vehicle wireless communication section 211 may be referred to as a first on-vehicle wireless communication section, and the on-vehicle wireless communication section 216 may be referred to as a second on-vehicle wireless communication section.

As an example, a case has been described in which a control signal for controlling the opening and closing of the platform door 130 is transmitted from the on-board device 210a to the terrestrial wireless device 190a, but the present invention is not limited to this. The on-board device 210a can also transmit control signals to devices other than the platform door 130. For example, when the orientation of the home surveillance camera 120 can be changed, the on-vehicle device 210a may transmit a control signal for controlling the orientation of the home surveillance camera 120 to the ground wireless device 190a. Furthermore, in the second embodiment, the on-vehicle transmission control section 215 and the on-vehicle wireless communication section 216 may be installed at a location other than the driver's seat 220a of the vehicle 200a. Note that in the second embodiment, the operation when the terrestrial wireless device 190a transmits the multiplexed signal 400 to the onboard device 210a is the same as the operation in which the terrestrial wireless device 190 transmits the multiplexed signal 400 to the onboard device 210 in the first embodiment. The operation is the same as when

FIG. 11 is a flowchart showing the operation of the on-vehicle device 210a transmitting a control signal to the terrestrial wireless device 190a in the vehicle monitoring system 300a according to the second embodiment. In the on-board device 210a, the on-board transmission control unit 215 generates a control signal for controlling the opening and closing of the platform door 130 based on the operation from the crew member of the vehicle 200a (step S201). The on-board wireless communication unit 216 transmits the control signal generated by the on-board transmission control unit 215 to the terrestrial wireless device 190a (step S202). In the terrestrial wireless device 190a, the terrestrial wireless communication unit 170a receives a control signal for controlling the opening and closing of the platform door 130 from the on-board device 210a (step S203). The terrestrial wireless communication unit 170a outputs the received control signal to the platform door 130 (step S204).

Next, the hardware configuration of the vehicle monitoring system 300a will be explained. In the terrestrial wireless device 190a, the terrestrial wireless communication unit 170a is a communication device that performs wireless communication. Further, in the on-board device 210a, the on-board wireless communication unit 216 is a communication device that performs wireless communication. The on-vehicle transmission control section 215 is realized by a processing circuit. The processing circuit may be a processor and memory that executes a program stored in memory, or may be dedicated hardware. The processing circuit is also called a control circuit.

As described above, according to the present embodiment, in the vehicle monitoring system 300a, the on-board device 210a generates control signals for controlling the opening and closing of the platform door 130, etc., based on operations from the crew member of the vehicle 200a. and transmits it to the terrestrial wireless device 190a. The ground wireless device 190a outputs the received control signal to target equipment such as the platform door 130. Thereby, the crew member of the vehicle 200a can operate target equipment such as the platform door 130 while staying in the vehicle 200a.

Embodiment 3.
In the first embodiment, a case has been described in which information is transmitted from the ground wireless device 190 installed at the station 100 to the on-board device 210 mounted on the vehicle 200. Embodiment 3 further describes a method for simplifying the equipment compared to Embodiment 2 when transmitting control signals from an on-board device mounted on a vehicle to a ground radio device installed at a station. do.

FIG. 12 is a diagram showing a configuration example of a vehicle monitoring system 300b according to the third embodiment. The vehicle monitoring system 300b includes a terrestrial wireless device 190b and an on-vehicle device 210b. The vehicle monitoring system 300b is a system that monitors the open/closed state of a door (not shown) provided in the vehicle 200b that stops at the station 100b. A station platform 110, a platform monitoring camera 120, a platform door 130, station equipment 140, and a ground radio device 190b are installed at the station 100b where the vehicle 200b stops.

The ground wireless device 190b transmits information acquired from the platform monitoring camera 120, platform door 130, and station equipment 140 to the on-board device 210b mounted on the vehicle 200b. The terrestrial radio device 190b includes a terrestrial transmission control section 150, a video control section 160, a terrestrial radio communication section 170b, and a control signal demodulation section 180. The terrestrial wireless communication unit 170b receives a third modulated signal in which a control signal for controlling the opening and closing of the platform door 130 is modulated into a specified signal band from the on-board device 210b mounted on the vehicle 200b. The control signal demodulation section 180 demodulates a control signal from the third modulated signal received by the terrestrial wireless communication section 170b and outputs it to the platform door 130. As described above, in the third embodiment, the terrestrial wireless device 190b transmits the third modulated signal modulated in the signal band in which the control signal for controlling the opening/closing of the platform door 130 to the terrestrial radio device that transmits the multiplexed signal 400. The third modulated signal is received by the wireless communication unit 170b, demodulated into a control signal, and outputted to the platform door 130.

FIG. 13 is a diagram showing a configuration example of the on-vehicle device 210b according to the third embodiment. The on-board device 210b includes an on-board wireless communication section 211b, a video output section 212, a display section 213, and an on-board transmission control section 217. FIG. 13 shows an example in which a driver's seat 220b of a vehicle 200b includes an on-board device 210b. The on-board transmission control unit 217 generates a control signal for controlling the opening and closing of the platform door 130 based on the operation from the crew member of the vehicle 200b, and modulates the control signal into a third modulation signal in a specified signal band. . The on-vehicle wireless communication unit 211b transmits the third modulated signal modulated by the on-vehicle transmission control unit 217 to the terrestrial wireless device 190b. As described above, in the third embodiment, the on-board device 210b modulates the control signal for controlling the opening/closing of the platform door 130 into the third modulation signal in the prescribed signal band, and The third modulated signal is transmitted from the upper wireless communication unit 211b to the terrestrial wireless device 190b. The band used when the on-board device 210b transmits the third modulated signal to the terrestrial wireless device 190b is preferably a band that does not interfere with the multiplexed signal 400.

As an example, a case has been described in which a control signal for controlling the opening and closing of the platform door 130 is transmitted from the on-board device 210b to the ground wireless device 190b, but the present invention is not limited to this. The on-board device 210b can also transmit control signals to devices other than the platform door 130. For example, if the orientation of the home surveillance camera 120 can be changed, the on-vehicle device 210b may transmit a control signal for controlling the orientation of the home surveillance camera 120 to the ground wireless device 190b. Furthermore, in the third embodiment, the on-vehicle transmission control unit 217 may be installed at a location other than the driver's seat 220b of the vehicle 200b. In addition, in the third embodiment, the operation when the terrestrial wireless device 190b transmits the multiplexed signal 400 to the onboard device 210b is the same as the operation in which the terrestrial wireless device 190 transmits the multiplexed signal 400 to the onboard device 210 in the first embodiment. The operation is the same as when

In the second embodiment, the terrestrial wireless device 190a includes the terrestrial wireless communication unit 170 and the terrestrial wireless communication unit 170a, and the on-board device 210a includes the on-board wireless communication unit 211 and the on-board wireless communication unit 216. In this case, repairs and maintenance in the event of a failure will be easier, but the need for equipment such as antennas will increase. In particular, in the vehicle 200a, the antennas of the on-board wireless communication unit 211 and the on-board wireless communication unit 216 included in the on-board device 210a prevent the driver's field of view from narrowing when the driver sits facing the driver's cab 221. It is necessary to

On the other hand, in the third embodiment, in the onboard device 210b, the onboard wireless communication unit 211b receives the multiplexed signal 400 from the terrestrial wireless device 190b, and transmits the third modulated signal modulated with the control signal to the terrestrial wireless to device 190b. The on-board device 210b also uses the on-board wireless communication section 211b to transmit and receive signals, thereby simplifying the equipment and preventing the driver's field of view from being narrowed when the driver is sitting facing the driver's cab 221. can do. Further, in the third embodiment, also in the terrestrial radio device 190b, the terrestrial radio communication unit 170b transmits the multiplexed signal 400 to the on-board device 210b, and transmits the third modulated signal modulated with the control signal to the on-board device. 210b. The terrestrial wireless device 190b can simplify the equipment by using the terrestrial wireless communication section 170b in signal transmission and reception.

FIG. 14 is a flowchart showing an operation in which the on-vehicle device 210b transmits a third modulated signal obtained by modulating a control signal to the terrestrial wireless device 190b in the vehicle monitoring system 300b according to the third embodiment. In the on-board device 210b, the on-board transmission control unit 217 generates a control signal for controlling the opening and closing of the platform door 130 based on the operation from the crew member of the vehicle 200b (step S301). The on-vehicle transmission control unit 217 modulates the control signal into a third modulation signal (step S302). The on-board wireless communication unit 211b transmits the third modulated signal generated and modulated by the on-board transmission control unit 217 to the terrestrial wireless device 190b (step S303). In the terrestrial radio device 190b, the terrestrial radio communication unit 170b receives the third modulated signal modulated with the control signal for controlling the opening and closing of the platform door 130 from the on-board device 210b (step S304). The control signal demodulator 180 demodulates the third modulated signal received by the terrestrial wireless communication unit 170b (step S305), and outputs the obtained control signal to the platform door 130 (step S306).

Next, the hardware configuration of the vehicle monitoring system 300b will be explained. In the terrestrial wireless device 190b, the terrestrial wireless communication unit 170b is a communication device that performs wireless communication. Control signal demodulation section 180 is realized by a processing circuit. Furthermore, in the on-board device 210b, the on-board wireless communication section 211b is a communication device that performs wireless communication. The on-vehicle transmission control section 217 is realized by a processing circuit. The processing circuit may be a processor and memory that executes a program stored in memory, or may be dedicated hardware. The processing circuit is also called a control circuit.

As described above, according to the present embodiment, in the vehicle monitoring system 300b, the on-board device 210b generates control signals for controlling the opening and closing of the platform door 130, etc., based on operations from the crew member of the vehicle 200b. The signal is then modulated and transmitted as a third modulated signal to the terrestrial wireless device 190b. The terrestrial wireless device 190b outputs a control signal obtained by demodulating the received third modulated signal to target equipment such as the platform door 130. Thereby, the crew member of the vehicle 200b can operate target equipment such as the platform door 130 while remaining in the vehicle 200b. Compared to the vehicle monitoring system 300a of the second embodiment, the vehicle monitoring system 300b of the third embodiment can implement the above operation with simplified equipment.

The configurations shown in the embodiments above are merely examples, and can be combined with other known techniques, or can be combined with other embodiments, within the scope of the gist. It is also possible to omit or change part of the configuration.

100, 100a, 100b station, 110 station platform, 120 platform surveillance camera, 130 platform door, 140 station equipment, 150 ground transmission control section, 160 video control section, 161, 162 modulation section, 163 frequency multiplexing section, 170, 170a, 170b terrestrial radio communication unit, 180 control signal demodulation unit, 190, 190a, 190b terrestrial radio equipment, 200, 200a, 200b vehicle, 210, 210a, 210b on-vehicle equipment, 211, 211b, 216 on-vehicle radio communication unit, 212 video Output section, 213 Display section, 215, 217 On-board transmission control section, 220, 220a, 220b Driver's seat, 221 Cab, 300, 300a, 300b Vehicle monitoring system, 400 Multiplexed signal, 401 Video signal band, 402 Audio signal band , 501 Platform door open/closed state.

Claims

Modulates the image information of the image taken by a platform surveillance camera that can capture the range in which the open/closed state of the doors of vehicles stopping at the station can be confirmed into the first modulation signal of the specified video signal band, and installs it on the station platform. A multiplexed signal in which equipment information including opening/closing information indicating the open/closed state of a platform door is modulated into a second modulation signal in a prescribed audio signal band, and the first modulation signal and the second modulation signal are multiplexed. a terrestrial wireless device that transmits the information to the vehicle;
an on-vehicle device that receives the multiplexed signal, demodulates the multiplexed signal, and displays an image that allows confirmation of the open/closed state of the door of the vehicle and the open/closed state of the platform door;
A vehicle monitoring system comprising:
The on-board device transmits a control signal for controlling opening and closing of the platform door to the ground wireless device from a second on-board wireless communication unit different from the first on-board wireless communication unit that receives the multiplexed signal. death,
The terrestrial wireless device receives the control signal at a second terrestrial wireless communication unit different from the first terrestrial wireless communication unit that transmits the multiplexed signal, and outputs the control signal to the platform door.
The vehicle monitoring system according to claim 1, characterized in that:
The on-board device modulates the control signal for controlling opening and closing of the platform door into a third modulated signal in a prescribed signal band, and transmits the third modulated signal from the on-board wireless communication unit that receives the multiplexed signal. transmitting a signal to the terrestrial wireless device;
The terrestrial wireless device receives the third modulated signal at a terrestrial wireless communication unit that transmits the multiplexed signal, demodulates the third modulated signal into the control signal, and outputs the control signal to the platform door.
The vehicle monitoring system according to claim 1, characterized in that:
A first modulation unit that modulates the image information of an image taken by a platform surveillance camera that can capture the range in which the open and closed states of the doors of vehicles stopping at the station can be confirmed into a specified video signal band, and is installed on the station platform. a second modulation section that modulates equipment information including opening/closing information indicating the open/close state of the platform door, into a prescribed audio signal band; and a first modulation signal obtained by the first modulation section and the second a video control unit having a frequency multiplexing unit that multiplexes the second modulated signal obtained by the second modulation unit and outputs the multiplexed signal;
a terrestrial wireless communication unit that transmits the multiplexed signal to the vehicle;
A terrestrial wireless device characterized by comprising:
The terrestrial wireless communication unit is a first terrestrial wireless communication unit,
moreover,
a second terrestrial wireless communication unit that receives a control signal for controlling opening and closing of the platform door from the vehicle and outputs it to the platform door;
The terrestrial wireless device according to claim 4, further comprising:
The terrestrial wireless communication unit receives from the vehicle a third modulated signal in which a control signal for controlling opening/closing of the platform door is modulated into a specified signal band;
moreover,
a control signal demodulation unit that demodulates the control signal from the third modulation signal and outputs it to the platform door;
The terrestrial wireless device according to claim 4, further comprising:
A first modulated signal in which image information of an image taken by a platform surveillance camera capable of photographing a range in which the open/closed states of the doors of vehicles parked at the station can be confirmed from the ground radio device is modulated into a specified video signal band. and a second modulated signal in which equipment information including opening/closing information indicating the opening/closing state of a platform door installed on a station platform is modulated into a specified audio signal band. Communication Department and
a video output unit that demodulates the multiplexed signal and outputs image information of an image that allows confirmation of the open/closed state of the door of the vehicle and opening/closing information indicating the open/closed state of the platform door;
an image that allows confirmation of the open/closed state of the door of the vehicle, and a display unit that displays the open/closed state of the platform door;
An on-vehicle device characterized by comprising:
The on-vehicle wireless communication unit is a first on-board wireless communication unit,
moreover,
an on-board transmission control unit that generates a control signal for controlling opening and closing of the platform door based on an operation from a crew member of the vehicle;
a second onboard wireless communication unit that transmits the control signal to the ground wireless device;
The on-vehicle device according to claim 7, further comprising:
moreover,
an on-board transmission control unit that generates a control signal for controlling opening and closing of the platform door based on an operation from a crew member of the vehicle, and modulates the control signal into a third modulation signal in a prescribed signal band;
Equipped with
The on-vehicle wireless communication unit transmits the third modulated signal to the terrestrial wireless device.
The on-vehicle device according to claim 7, characterized in that:
A control circuit for controlling a vehicle monitoring system,
The system modulates the image information taken by a platform surveillance camera that can capture the range in which the open and closed states of the doors of vehicles stopping at the station can be confirmed into the first modulation signal of the specified video signal band, and is installed on the station platform. Equipment information including opening/closing information indicating the opening/closing state of the platform door is modulated into a second modulation signal in a specified audio signal band, and a multiplexed signal obtained by multiplexing the first modulation signal and the second modulation signal is transmitted to the sent to vehicle,
receiving the multiplexed signal, demodulating the multiplexed signal, and displaying an image that allows confirmation of the open/closed state of the door of the vehicle and the open/closed state of the platform door;
A control circuit that causes the vehicle monitoring system to perform the following.
A storage medium storing a program for controlling a vehicle monitoring system,
The program is
The system modulates the image information taken by a platform surveillance camera that can capture the range in which the open and closed states of the doors of vehicles stopping at the station can be confirmed into the first modulation signal of the specified video signal band, and is installed on the station platform. Equipment information including opening/closing information indicating the opening/closing state of the platform door is modulated into a second modulation signal in a specified audio signal band, and a multiplexed signal obtained by multiplexing the first modulation signal and the second modulation signal is transmitted to the sent to vehicle,
receiving the multiplexed signal, demodulating the multiplexed signal, and displaying an image that allows confirmation of the open/closed state of the door of the vehicle and the open/closed state of the platform door;
A storage medium that causes the vehicle monitoring system to perform the following.
A vehicle monitoring method for a vehicle monitoring system, the method comprising:
The ground radio device modulates image information captured by a platform surveillance camera that can capture the range in which the open and closed states of the doors of vehicles parked at the station can be confirmed, into a first modulation signal of a specified video signal band, and transmits the information to the station. Modulate equipment information including opening/closing information indicating the opening/closing status of a platform door installed on the platform into a second modulation signal in a prescribed audio signal band, and multiplex the first modulation signal and the second modulation signal. a first step of transmitting the multiplexed signal to the vehicle;
a second step in which an on-vehicle device receives the multiplexed signal, demodulates the multiplexed signal, and displays an image that allows confirmation of the open/closed state of the door of the vehicle and the open/closed state of the platform door;
A vehicle monitoring method comprising: