JP7255810B2 - Information processing device, information processing method, and program - Google Patents

Description

The present invention relates to an information processing device, an information processing method, and a program.

Conventionally, a vehicle network control device has a first communication means for transmitting and receiving information between a vehicle network control device of an adjacent vehicle on the one end side of each vehicle and a vehicle network control device of an adjacent vehicle on the second end side of each vehicle. A second communication means for transmitting and receiving information to and from a vehicle network control device, and the communication means from the own vehicle information of the vehicle in which it is mounted and the vehicle network control device mounted in the adjacent vehicle. vehicle information acquiring and accumulating means for accumulating the adjacent vehicle information of the adjacent vehicle acquired through the vehicle network system as the adjacent vehicle information, wherein the vehicle network system acquires the vehicle information of all vehicles of the train set obtained from the adjacent vehicle information. Based on this, there is a system that monitors and controls the terminal device mounted on each vehicle (see, for example, Patent Document 1).

JP 2011-205777 A

In some cases, multiple trains (sets) with different destinations but the same halfway section are connected (called coupling), and a combined operation is performed in which the middle section runs like one train. During combined operation, for example, the same information is preferably distributed from the driver's cab of the leading vehicle to each of the multiple trains. However, information that can be transmitted is limited in information transmission using the lead-through wires of existing vehicles. It was very costly to retrofit existing trains with lead-through wires for transmitting new information.

Therefore, it is conceivable to distribute information to each of a plurality of vehicles operated in parallel or to distribute information to each of a plurality of vehicles by wireless communication. In this case, it is necessary to build a wireless network in multiple trains that are merged. However, the existing rolling stock does not have a mechanism for automatically grasping the formation state of the railway vehicle, that is, information regarding the formation state, such as whether it is a single formation or a combined formation, and the number of formations in the case of a combined formation. In order to grasp the formation state, it is conceivable to modify the software installed in the railway vehicle so that the information regarding the formation state can be distributed, but this is complicated.

An object of the present invention is to provide an information processing device, an information processing method, and a program capable of automatically detecting the organization state of railroad vehicles.

One aspect of the present invention is an information processing device mounted on a railroad vehicle comprising a plurality of vehicles, wherein in the railroad vehicle, the relative position of each of the plurality of vehicles in the railroad vehicle is indicated by wireless communication. a receiving unit for receiving positional information, and the positional information of the vehicle on which the information processing device is located indicates a front position corresponding to the head of the railroad vehicle when viewed from the traveling direction of the railroad vehicle, and the vehicle on which the information processing device is located belongs. In the formation, when the position information of the vehicle positioned at the rear end of the railway vehicle as viewed from the direction of travel indicates the rear position corresponding to the rear end of the railway vehicle, it is determined that the formation state of the railway vehicle is a single formation. and when the position information of the vehicle positioned at the end indicates a middle position between the front position and the rear position of the railway vehicle, the composition state of the railway vehicle is a concatenation of two or more trainsets. and a processing unit that determines that the state is the state.

The following configuration may be employed in the information processing device. That is, when it is determined that the railway vehicle is in a coupled state of two or more train sets, the processing unit monitors the position information received from each of the vehicles forming the railway vehicle in the coupled state for a certain period of time. , the number of combined train sets is determined using the number of position information indicating the middle position and the number of position information indicating the rear position received during the predetermined period of time.

The following configuration may be employed in the information processing device. That is, the processing unit retransmits the position information when at least one of the number of position information indicating the middle position and the number of position information indicating the rear position is greater than the number of vehicles expected at the time of coupling. performs processing for announcing information prompting

The following configuration may be employed in the information processing device. That is, a plurality of cameras are attached to both side surfaces of each of the rolling stock forming the rolling stock, and the processing unit receives information indicating the determination result of the organization state of the rolling stock and the traveling direction of the rolling stock. and information indicating the side on which the door is to be opened when the railway vehicle is stopped, among the plurality of cameras, a camera used for imaging when the vehicle is stopped is specified for each of the vehicles, and each of the specified vehicles The image captured by the camera is displayed on the display device.

The following configuration may be employed in the information processing device. That is, the processing unit performs the process of specifying, for each vehicle, the camera to be used for imaging when the railway vehicle stops, triggered by the reception of information indicating the side of the platform door of the station where the railway vehicle will stop next. conduct.

The following configuration may be employed in the information processing device. That is, the processing unit performs the process of specifying, for each vehicle, the camera to be used for imaging when the railway vehicle stops, with information indicating the side of the door that will be opened when the railway vehicle stops at the next station, and Triggered by the reception of information indicating stop.

The following configuration may be employed in the information processing device. That is, the processing unit terminates the process of displaying the image captured by the camera of each of the specified vehicles on the display device, triggered by the reception of the information indicating the running of the railroad vehicle.

According to another aspect of the present invention, an information processing device mounted on a railroad vehicle comprising a plurality of vehicles indicates a relative position of each of the plurality of vehicles in the railroad vehicle by wireless communication. The information is received, and the position information of the vehicle on which the information processing device is located indicates a front position corresponding to the front position of the railway vehicle when viewed in the direction of travel, and in the formation to which the vehicle on which the information processing device is located belongs, When the position information of the vehicle positioned at the rear end as seen from the traveling direction of the railway vehicle indicates a rear position corresponding to the rear end of the railway vehicle, it is determined that the formation state of the railway vehicle is a single formation, and When the position information of the vehicle located at the tail indicates a middle position between the front position and the rear position of the railway vehicle, the composition state of the railway vehicle is a coupled state of two or more compositions. It is an information processing method including determining.

According to another aspect of the present invention, a computer of an information processing device mounted on a railroad vehicle comprising a plurality of railroad vehicles is provided with wireless communication in the railroad vehicle to detect the relative position of each of the plurality of vehicles in the railroad vehicle. and the position information of the vehicle on which the information processing device is located indicates the front position corresponding to the head of the railroad vehicle when viewed from the traveling direction of the railroad vehicle, and the vehicle on which the information processing device is located belongs. In the formation, when the position information of the vehicle positioned at the rear end of the railway vehicle as viewed from the direction of travel indicates the rear position corresponding to the rear end of the railway vehicle, it is determined that the formation state of the railway vehicle is a single formation. and when the position information of the vehicle positioned at the end indicates a middle position between the front position and the rear position of the railway vehicle, the composition state of the railway vehicle is a concatenation of two or more trainsets. It is a program for executing a process for determining that the state is the state.

According to the present invention, the knitting state can be automatically detected.

1A to 1C are explanatory diagrams of train formation and coupling operation. 2A to 2C are explanatory diagrams of train formation and coupling operation. 3A and 3B show an example camera system configuration in a single formation. FIG. 4 shows an example of a camera system configuration in two connections. FIG. 5 shows the camera system configuration in triple junction. FIG. 6 is an explanatory diagram of SSIDs and mesh IDs. FIG. 7 shows a configuration example of a recording apparatus. FIG. 8 shows a configuration example of a terminal device. FIG. 9 is a flowchart illustrating an example of processing by the terminal device. FIG. 10 is a flowchart illustrating an example of processing by the terminal device. FIG. 11 is a flowchart illustrating an example of processing by the terminal device. 12A to 12E show screen display examples of terminal displays.

Hereinafter, an information processing apparatus, an information processing method, an automatic program broadcasting apparatus, an automatic broadcasting audio generating method thereof, and a program according to embodiments will be described with reference to the drawings. The configuration of the embodiment is an example, and the present invention is not limited to the configuration of the embodiment.

FIGS. 1A to 1C and 2A to 2C are explanatory diagrams of train formation and coupling operation. In this embodiment, as an example of the knitting state, a single knitting, a double knitting in which two knittings are joined together, and a triple knitting in which three knittings are joined together will be described. Also, an example in which one train is a two-car train or a three-car train will be described. The number of couplings and the number of vehicles in one set may be other than two or three. However, in this embodiment, the maximum number of vehicles during combined operation is six. In this specification, the "organization state" includes whether it is a single formation or a combined state, the number of combined formations (number of formations) in the case of a combined state, the number of vehicles, and the like.

FIG. 1A shows a two-car train (train), which is an example of a single train. When a railroad vehicle is traveling in the left direction (indicated by an arrow) of the paper surface of FIG. is called the "back position".

FIG. 1B shows a two-coupled train formation in which two two-car trains are joined together. The knitting at the head of the traveling direction (the left direction of the paper surface of FIG. 1B) is the first knitting, and the knitting behind the first knitting is the second knitting. The position of the car 1 at the head of the first formation is called "front position", and the position of the car 1 at the end of the second formation is called "rear position". A position of the vehicle 1 between the front position and the rear position is called the "middle position".

FIG. 1C shows a three-coupled train set in which three two-car trains are joined together. The knitting at the head of the traveling direction (left direction of the paper surface of FIG. 1C) is the first knitting, the knitting behind the first knitting is the second knitting, and the knitting behind the second knitting is the third knitting. . The position of the car 1 at the head of the first formation is called "front position", and the position of the car 1 at the end of the third formation is called "rear position". Each position of the vehicle 1 between the front position and the rear position is called the "middle position".

FIG. 2A shows an example of a single train of a three-car train, FIG. 2B shows an example of a two-coupled three-car train, and FIG. 2C shows an example of three-coupled three-car train. In FIG. 2A, the position of the vehicle 1 between the leading vehicle 1 (front position) and the rearmost vehicle 1 (rear position) with respect to the traveling direction is called a "middle position". In two-coupling and three-coupling of three-car trains, the position of the leading car 1 in the traveling direction is the front position, the position of the last car 1 is the rear position, and the position of the car 1 between the front position and the rear position is Each position is the middle position.

FIGS. 3A and 3B show a network configuration example (camera system) constructed within an independent organization. FIG. 3A shows the case of a two-car train, and FIG. 3B shows the case of a three-car train. 3A and 3B schematically show the vehicle 1 viewed from above. Numbers in parentheses within vehicle 1 indicate the car number of vehicle 1 . In the formation, the vehicle 1 having a driver's cab at one of both ends is called a Mc car, and the vehicle 1 having a cab at the end opposite to the Mc car is called a Tc car. In a three-car train, a car 1 without a driver's cab, located between the Mc car and the Tc car, is called a T car.

A total of four cameras #1 to #4 are installed on both sides of the vehicle 1, two cameras each. The two cameras are arranged facing each other in the horizontal direction. In the example shown in FIGS. 3A and 3B, camera #1 and camera #3 are installed facing each other, and camera #2 and camera #4 are installed facing each other.

The camera #1 and the camera #3 are used, for example, to photograph passengers getting on and off from the door 5B when the railway vehicle is stopped. Cameras #2 and #4 are used to photograph passengers getting on and off the train through the door 5A when the train is stopped. Of the four cameras #1 to #4 provided in one vehicle 1, the camera facing in the opposite direction to the direction of travel on the side where the door opens is used for photographing while the vehicle is stopped.

In the example of FIG. 3A, the left direction of the paper surface of FIG. 3A is the traveling direction of the railcar (indicated by an arrow), and when the door 5A on the lower side of the paper surface opens, camera #2 of the leading car 1 (car No. 1) and the camera #3 of the last car 1 (car No. 2) are used for photographing. In the example of FIG. 3B, the left direction of the paper surface of FIG. 3B is the traveling direction of the railroad vehicle (indicated by an arrow), and when the door 5B on the upper side of the paper surface opens, the camera # 1 of the leading vehicle 1 (car No. 1) and , the camera #1 of the middle car 1 (car No. 2) and the camera #4 of the last car 1 (car No. 3) are used for photographing.

In the vehicle 1, a recording device (DVR) 10, a wireless LAN (Wi-Fi) access point AP1 (access point 30), an access point AP2 (access point 31), and a terminal 20 are installed.

The recording device 10 is used for recording images (video) captured by the cameras #1 to #4. The access point AP1 is installed in the driver's cab, and the access point AP2 is installed in the passenger compartment. The terminal 20 is installed in the driver's cab, communicates with the access point AP1 of each vehicle 1, displays the image of the camera of each vehicle 1, and is used by the crew to check (monitor) the state near the open door. be done. Note that the terminal 20 is not installed in the T car.

FIG. 4 shows a network configuration (camera system) in which a two-car train is coupled with two, and FIG. 5 shows a network configuration (camera system) in which a two-car train is coupled with three. The configuration of the vehicle 1, the cameras #1 to #4, and the equipment (recording device 10, AP1, AP2, and terminal) placed in the vehicle 1 in each combined train set is the same as in the independent train set.

As shown in FIGS. 3A and B, 4 and 5, each device in the vehicle 1, that is, the recording device 10
, the access point AP1, the access point AP2, and the terminal 20 are each assigned a unique IP address according to an assignment rule. For example, an IP address consists of four numerical values "10.a.b.c" in which 32 bits are divided every 8 bits.

The number "10" indicated by the first 8 bits from the left indicates the address of the network, and indicates that devices having the same address as this number belong to the same network. A numerical value a indicated by the second 8 bits indicates organization information (organization identification information). For example, a=“1” is assigned to the first formation at the time of independent formation and merging, a="2" is assigned to the second formation at the time of merging (see FIGS. 4 and 5), and the first formation at the time of merging is assigned. 3 sets are assigned a=“3” (see FIG. 5).

A numerical value b indicated by the third 8 bits indicates a unique value of the device. In this embodiment, b="1" indicates the recording device 10, b="2" indicates the terminal 20, b="3" indicates the access point AP1, and b="4" indicates the access point AP2. show. A numerical value c indicated by 8 bits at the end indicates vehicle type information. In this embodiment, c="21" indicates a Mc car in a two-car formation, and c="22" indicates a Tc car in a two-car formation. c="31" indicates a Mc car in a three-car formation, c="32" indicates a T car in a three-car formation, and c="33" indicates a Tc car in a two-car formation. According to the above allocation rule, the type of organization, equipment, and vehicle can be known from the IP address of the transmission source.

FIG. 6 is an explanatory diagram of SSIDs and mesh IDs. In this embodiment, a common mesh ID is used among a plurality of formations, and devices having the same mesh ID can construct a wireless network. On the other hand, a unique SSID is set for each organization, and the terminal 20 can wirelessly communicate with an access point within its own organization. At the time of merging, the SSID of the access point to which the terminal 20 can be connected is set so that a wireless network is constructed between the merging trains. For example, in the two-connected formation shown in the interruption of FIG. 6, the terminal 20 is set to be connectable to SSIDs "#2" and "#3".

By the way, if the mesh ID is common, wireless communication can be performed. Therefore, for example, it is determined that the upper formation (SSID "#1") is combined with the formation of SSID "#3" due to misrecognition, There was a possibility that wireless communication with SSID "#3" was incorrectly organized. In this embodiment, an appropriate wireless network is constructed by accurately recognizing the formation and confirming the formation by means of a formation determination method or process, which will be described later.

FIG. 7 is a diagram showing a configuration example of the recording apparatus 10. As shown in FIG. The recording device 10 includes a control circuit 11 , a DVR circuit power supply circuit 12 , a terminal power supply circuit 13 , and a DVR circuit (recording circuit) 14 . Each of the power supply circuits 12 and 13 is supplied with power (DC 100V) from the battery of the vehicle 1 . Power supply circuit 12 supplies operating power to control circuit 11 , DVR circuit 14 , multiple cameras 15 , and access points 30 and 31 . The power supply circuit 12 can supply operating power to the terminal 20 via USB.

The DVR circuit 14 is connected to four cameras 15 (#1 to #4) and an access point AP1 (access point 30) via connectors and cables. Also, the recording device 10 is connected to the terminal 20 via USB. In the example shown in FIG. 7, two terminals 20 (20A and 20B) are connectable. not a requirement. The terminal 20B is used when it is desired to display camera images on two screens. The recording device 10 is also connected to a GPS receiver 40 that detects the position of the vehicle 1 .

Vehicle information is input to the control circuit 11 by a DC 100V signal generated by the operation of the cab of the vehicle 1 . Vehicle information is as follows.
(1) One-man control (2) Platform door opening (right/left)
(3) Vehicle position (front position, rear position)
(4) Door open (right/left)
(5) 5km/h detection

Monitoring using the camera 15 is used during one-man operation of the railway vehicle. When the one-man control signal is enabled (signal level is high (H)), the monitoring function is enabled, and the terminal 20 enters a mode in which the image captured by the corresponding camera 15 is displayed on the display 25 of the terminal 20 . When the one-man control is disabled (signal level is low (L)), the display 25 of the terminal 20 enters a blackout display mode. In this case, the camera image is hidden. The one-man control signal is used for on/off control of the camera image display mode, and the imaging operation of the camera 15 is performed regardless of the state of the one-man control signal.

The platform door open (right/left) signal indicates whether to open or close the platform door on the right side in the traveling direction or the platform door on the left side in the traveling direction when the railway vehicle approaches the platform of the station. Platform door open (left) means opening the platform door on the left side in the direction of travel, and platform door open (right) means opening the platform door on the right side in the direction of travel. Platform door open (right/left) is a signal similar to door open (right/left), but door open (right/left) is a signal that changes while the railcar is stopped. The platform door open (right/left) is issued when the railway vehicle approaches the platform, so it is a signal that changes when the railway vehicle is moving.

The camera 15 that displays the image on the terminal 20 is determined based on the platform door open (right/left) signal. When platform door open (right) is issued, the camera 15 on the right side in the traveling direction is selected, and when platform door open (left) is issued, the camera 15 on the left side in the traveling direction is selected.

It should be noted that even at stations where platform doors are not actually installed, platform door opening (right/left) may be generated according to the door opening side to provide an opportunity to select the camera 15. . Further, door opening (right/left) may be used instead of platform door opening (right/left).

The positional information signal is a signal indicating the position of the vehicle 1 in one train set. The signal indicating the front position and the signal indicating the rear position are separate signals, indicating that the vehicle 1 is in the front position when the signal level of the signal for the front position is high. On the other hand, when the signal level of the signal indicating the rear position is high, it indicates that the vehicle 1 is in the rear position. A low signal level for both the front position signal and the rear position signal indicates that the vehicle 1 is in the middle position. A signal indicating the middle position may be included in the DC 100V signal separately from the front position and the rear position.

The door open (right/left) signal is a signal whose state (signal level) changes when the door is opened, and the door open (right) signal indicates that the door on the right side of the traveling direction of the vehicle 1 is to be opened. , door open (left) signal indicates that the door on the left side of the direction of travel should be opened. The terminal 20 displays the live video on the display 25 at the same timing as the door opening or at a timing slightly before or after the door is opened. The display of the live video is stopped upon detection of a high signal level of 5 km/h detection, which indicates the running of the railway vehicle.

5 km/h detection indicates that the speed of the railcar is greater than or equal to 5 km/h (i.e. vehicle 1 is running) when the signal level is high, and indicates that the railcar speed is greater than or equal to 5 km/h when the signal level is low. 5
It indicates that the speed is less than km/h (that is, the vehicle 1 is stopped).

The control circuit 11 (an example of a control unit, a controller) converts vehicle information input as a DC 100V signal into digital data, and sends the digital data to the recording circuit 14 by serial or parallel transmission. The control circuit 11 also sends the position information received from the GPS receiver 40 to the recording circuit 14 .

The recording circuit 14 stores images (video) captured by the cameras 15 corresponding to the cameras #1 to #4 in a storage device (hard disk, SSD (Solid State Drive), etc.). At this time, the recording circuit 14 can also store the image data in association with GPS position information and vehicle information. In addition, the recording circuit 14 broadcasts the vehicle information input from the control circuit 11 via the access point 30 (AP1) at periodic timings.

FIG. 8 shows a configuration example of a terminal 20 that operates as an information processing device. The terminal 20 is, for example, a tablet terminal capable of wireless LAN communication. However, the terminal 20 may be a portable terminal (portable communication terminal) other than a tablet terminal, such as a smart phone, a laptop personal computer (PC), a personal digital assistant (PDA), or a wearable computer. However, terminal 20 may be a fixed terminal. The terminal 20 may be a general-purpose terminal or a dedicated terminal.

8, a terminal 20 includes a processor 21 as a processing unit or a control unit (controller), a storage device 22, a communication interface (communication IF) 23, and an input device 24, which are interconnected via a bus 26. and a display 25 . The display 25 is an example of a "display device".

The storage device 22 is, for example, a ROM (Read Only Memory), a RAM (Random Access Memory), a hard disk, an SSD, a flash memory, an EEPROM (Electrically Erasable Programmable Read-Only Memory), etc., and stores programs and data storage areas,
It is used as a program deployment area, a program work area, a communication data buffer area, and the like.

The communication IF 23 includes a wireless communication circuit that controls wireless communication processing with the access point 30 (hereafter AP1) and the access point 31 (hereafter AP2). In this embodiment, a wireless LAN (Wi-Fi) is used as the wireless communication standard, but a wireless communication standard other than the wireless LAN may be applied. The communication IF 23 also includes a USB connector for connecting to the recording device 10 via a USB cable.

The input device 24 includes, for example, at least one of keys, buttons, a pointing device, a touch panel, etc., and is used to input information. The display 25 is, for example, a liquid crystal display, and displays information and data. The processor 21 is, for example, a CPU. The processor 21 executes various programs stored in the storage device 22 to perform various processes for the server to operate as a monitoring device.

For example, based on the vehicle information received from the recording device 10, the processor 21 determines the state of the composition of the railway vehicle, and determines the state of the composition (single composition, double coupling, or triple coupling). In addition, the processor 21 transmits real-time video (live video) captured by the camera 15 on the door-opening side from each of the cars 1 through the corresponding AP 1 from the recording circuit 14 of each car 1 based on the confirmed organization state. and receive it and display it on the display 25 .

Details of the operation and processing of the terminal 20 will be described below. The terminal 20 counts the number of connected vehicles 1 based on the vehicle information transmitted from the recording circuit 14 of each vehicle 1, and images are captured by the cameras 15 of the vehicles 1, the number corresponding to the number of vehicles. The resulting image is displayed on the display 25. The terminal 20 can recognize the type of the vehicle 1 to which the terminal 20 belongs (either Mc vehicle, T vehicle, or Tc vehicle) from the IP address of the terminal 20 itself. Also, from the vehicle information from the recording circuit 14, the position of the vehicle 1 to which the terminal 20 belongs (front position, middle position, or rear position) can be recognized.

The terminal 20 detects the number of vehicles based on the vehicle information from the recording circuit 14 . The image display is performed by the terminal 20 located in the vehicle 1 at the front position, and the terminals 20 at the middle position and the rear position receive the broadcast image data, but do not display it on the display 25 and black out (black display). remain and wait. The terminal 20 receives the vehicle information that is periodically or regularly broadcast from the recording circuit 14, compares it with the previously received information, and detects the difference (change). Triggered by the detection of the change, the terminal 20 performs a predetermined process.

9, 10 and 11 are flowcharts showing examples of processing of the terminal 20. FIG. Processing of the terminal 20 is performed by a processor 21 that executes a program. In step S101, the processor 21 detects position information (front position, rear position, middle position). When the position information is received, the process proceeds to step S102.

In step S102, the processor 21 uses the position information to determine whether the position of the host vehicle is the front position, the middle position, or the rear position. At this time, if it is determined that the vehicle is at the front position, the process proceeds to step S104, and if it is determined that the vehicle is at the middle position or the rear position, the process proceeds to step S103. proceed.

In step S103, the processor 21 periodically exchanges information with the terminal 20 located in the vehicle 1 in front using the wireless LAN. The processor 21 can recognize from the IP address of the transmission source of the IP packet received by the communication IF 23 that the transmission source is the terminal 20 of the same organization. By receiving information from the terminal 20 indicating that the position of the vehicle 1 in which the terminal 20 is located is the front position, it is possible to communicate with the terminal 20 in the vehicle 1 at the front position.

In step S104, the processor 21 confirms the position of the opposite leading vehicle. Here, the opposing leading vehicle means a Tc vehicle if the own vehicle is a Mc vehicle, and means a Mc vehicle if the own vehicle is a Tc vehicle. The processor 21 confirms the vehicle information (location information of the opposite lead vehicle) broadcast by the recording circuit 14 of the opposite lead vehicle from the IP address of the IP packet transmission source received by the communication IF 23 .

In step S105, the processor 21 determines whether the received position of the opposite leading vehicle indicates the rear position or the middle position. When it is determined that the rear position is indicated, the process proceeds to step S106, and the processor 21 decides the organization information assuming that the organization state is independent organization. In the case of a three-car train, the processor 21 can receive information indicating the middle position from the recording circuit 14 of the T car (distinguishable from the source IP address). The determination is made, for example, by setting that access points having SSIDs other than the SSID assigned to the own organization are not connected (not permitted to be connected). After determination, the processor 21 periodically communicates with the terminal at the rear position.

In the case of a transition from a single train set to a merge state, if the state is already a double merge or a triple merge, the position of the opposite leading car changes to the middle position. In step S105, by receiving such information indicating the middle position from the opposite leading vehicle, it is determined that the formation state is the coupled state, and the process proceeds to step S107.

When the process proceeds to step S107, the processor 21 waits to receive information of "door open" and "stopped" by broadcasting performed at periodic timing. The "door open" information is information indicating that the right door is open based on the door open (right) signal, or information indicating that the left door is open based on the door open (left) signal. The information indicating "stopped" is information indicating detection of 5 km/h with a low signal level.

In step S108, when the information of "door open" and "stopped" is received (Y in S108), "door open" transmitted from another vehicle (vehicle location information transmitted together with "door open") ) is monitored for a certain period of time (step S109).

In step S110, it is determined whether or not there is an unexpected reception from the vehicle. Here, the number of vehicles in the coupled state is predetermined. In this embodiment, the coupling state is such that the maximum number of vehicles is 6, two couplings of two-car trains (four vehicles) or three couplings (six vehicles), or two couplings of three-car trains ( 6 vehicles). In the case of two-coupling of a two-car train, the number of vehicles and the position information are four (two middle positions) of the front position, the middle position, the middle position, and the rear position. In the case of a three-coupling two-car train, the number of vehicles and position information are six (four middle positions): front position, middle position, middle position, middle position, middle position, and rear position. Also in the case of a two-coupling of a three-car train, the number of vehicles and position information are six: front position, middle position, middle position, middle position, middle position, and rear position.

During the monitoring time for a certain period of time, there is a possibility that other trains stop in the vicinity of the combined train (on the opposite side of the same platform or on the adjacent platform) and broadcast the position information. In this case, for example, more middle position information than the planned number (2 or 4) or more rear position information than the planned number (2 or more) may be received during a certain period of time.

If it is determined in step S110 that the number of middle positions and rear positions exceeds the planned number, the processor 21 advances the process to step S112 assuming that there is an unplanned vehicle reception. If the number of intermediate positions and rear positions is the planned number, the processor 21 determines the formation information as a combined formation. That is, wireless communication is performed using the SSID assigned to each connected train, and setting is made so as not to connect (not permit connection) to access points having other SSIDs. After determination, the processor 21 periodically communicates with the terminal 20 at the rear position.

In step S112, the processor 21 displays a message on the display 25 of the terminal 20 to the effect that "open the door" is to be performed again. As a result, the crew performs an operation to transmit "door open" again, that is, an operation to generate a door open (right/left) signal. Then, the message is canceled (Y in step S113), and the process returns to step S107.

In the processing of steps S107 to S110 again, door opening information and position information are broadcast with the timing shifted from that of other vehicles. Therefore, an accurate number of vehicles (the number of middle positions and the number of rear positions) can be obtained, and the process proceeds to step S111. As described above, the knitting state can be automatically determined and confirmed.

FIG. 11 shows an example of processing for displaying an image from the camera 15 on the display 25 of the terminal 20 at the front position. At step S201, the processor 21 waits for a message indicating the side to open the door. The message indicating the door opening side is the information indicating that the platform door on the left side of the vehicle 1 is to be opened, which corresponds to the platform door open (left), and the platform door open (right) signal, which corresponds to the vehicle 1
or door open information based on a door open (right/left) signal.

In step S202, when the processor 21 receives the message indicating the door opening side, the processor 21 acquires and displays the image of the camera corresponding to the determined organization information. For example, in the case of the single two-car train shown in FIG. It is received from the AP 1 of each vehicle 1 and displayed on the display 25 .

Alternatively, in the case of the single three-car train shown in FIG. 3B, when the door 5B on the right side in the traveling direction opens, the terminal 20 of the Mc car is connected to the camera #1 of the Mc car, the camera #1 of the T car, and the camera of the Tc car. The image to be captured in #4 is received from the AP 1 of each vehicle 1 and displayed on the display 25 .

Alternatively, in the case of the two-connection shown in FIG. 4, when the door 5A on the left side in the traveling direction is opened, the terminal 20 of the Mc car of the first formation is connected to the camera #2 of the Mc car and the camera #3 of the Tc car in the first formation. , receives images captured by the camera #2 of the Mc car and the camera #3 of the Tc car in the second formation from the AP 1 of each car 1 and displays them on the display 25 .

Alternatively, in the case of the triple connection shown in FIG. 4, when the door 5A on the left side in the traveling direction is opened, the terminal 20 of the Mc car of the first train set is connected to the camera #2 of the Mc car and the camera #3 of the Tc car in the first train set. , the images taken by the camera #2 of the Mc car and the camera #3 of the Tc car in the second train set, the camera #2 of the Mc car in the third train set and the camera #3 of the Tc car are received from the AP 1 of each car 1. , is displayed on the display 25 . In the case of three-connection, images are displayed using the display 25 of the two terminals 20A and the display 25 of the terminal 20B.

12A to 12E show examples of display screens of the display. Fig. 12A shows an example of image display in the case of a single two-car train (Fig. 3A), and the real-time image of camera #2 indicated by italicized number 1 in Fig. 3A is displayed in the rectangular area of "1" in Fig. 12A. 12A, the real-time image of camera #3 indicated by italicized number 2 in FIG. 3A is displayed in the rectangular area of "2" in FIG. 12A.

FIGS. 12B and 12C show examples of video display in the case of a two-car formation (FIG. 4). FIG. 12B shows an example in which a rectangular area for displaying an image is vertically divided into four areas. FIG. 12C shows an example in which a rectangular area for displaying an image is divided into four areas in two stages. The display mode of FIG. 12B and the display mode of FIG. 12C can be selected by the crew. Alternatively, the screen of FIG. 12B may be displayed on one of the two terminals 20A and 20B, and the screen of FIG. 12C may be displayed on the other. Camera images corresponding to the numbers in italics shown in FIG. 4 are displayed in each of the rectangular areas indicated by numbers in FIGS. 12B and 12C.

FIGS. 12D and 12E show examples of video display in the case of a three-coupling two-car train (FIG. 5). FIG. 12D shows an example in which a rectangular area for displaying an image is vertically divided into six areas. FIG. 12E shows an example in which a rectangular area for displaying an image is divided into six areas in two stages. The display mode of FIG. 12D and the display mode of FIG. 12E can be selected by the crew. Alternatively, the screen of FIG. 12D may be displayed on one of the two terminals 20A and 20B, and the screen of FIG. 12E may be displayed on the other. Camera images corresponding to the numbers in italics shown in FIG. 5 are displayed in each of the rectangular areas indicated by numbers in FIGS. 12D and 12E. 3A, 4, and 5 are opposite to each other, the display areas of the images shown in FIGS. 12A to 12E are mirror-symmetrical.

As a method of detecting the traveling direction, the processor 21 searches for the recording circuit 14 belonging to the vehicle 1 in the front position from the information broadcast by the recording circuit 14 . When the lower 8 bits of the IP address of the recording circuit 14 are "1", the processor 21 sets the Mc car side to the traveling direction side, and when the lower 8 bits are "2", the processor 21 sets the Tc car side. Set the direction of travel.

The details of video output and video display are as follows. When the platform door right/left signal and the 5 km/h detection information of signal level L (information indicating the stop of the vehicle) are detected, the image of the corresponding camera 15 is connected to the terminal 20 . However, the screen is in a state of black display. A predetermined delay time is measured after detecting the platform door signal and the 5 km/h detection information, and when the delay time elapses, the image is automatically displayed on the display 25 regardless of the presence or absence of the door open signal. The predetermined delay time can be set in the terminal 20 in advance by using an application or the like.

For example, when there is no platform door at the next stop and the monitor device of the vehicle 1 does not issue the platform door right/left signal, the right/left door open information and the signal level L 5 km/h detection are detected. (for example, triggered by the detection of these information or signals), the display of the image of the camera is performed. In addition, the video display is stopped (finished) when the signal level H of 5 km/h (running of the vehicle 1) is detected.

The terminal 20 described in the embodiment operates as an information processing device mounted on a railroad vehicle composed of a plurality of vehicles 1. The terminal 20 is a railroad vehicle, and the terminal 20 communicates with each railroad vehicle of the plurality of vehicles 1 by wireless communication. includes a communication IF 23 (an example of a receiving unit) that receives position information indicating a relative position in the . In addition, the position information of the vehicle 1 in which the terminal 20 is located indicates the front position of the vehicle 1 in which the terminal 20 is located, and indicates the front position of the vehicle 1 in which the terminal 20 is located. When the position information of the vehicle 1 located at the rear end as seen from the direction indicates the rear position corresponding to the rear end of the railway vehicle, it is determined that the formation state of the railway vehicle is single formation. On the other hand, when the position information of the vehicle 1 positioned at the end as described above indicates an intermediate position between the front position and the rear position of the railway vehicle, the terminal 20 determines that the composition state of the railway vehicle is two or more. It includes a processor 21 for determining a merging condition.

According to the terminal 20, it is possible to automatically detect (determine) the organization state of the railway vehicle. Then, a wireless network is constructed by determining the SSID to be used for wireless communication in a single formation or a combined formation. Therefore, it is possible to easily construct a closed wireless network (wireless LAN) within a train set (single set or combined set) of railway vehicles.

In the embodiment, when the processor 21 of the terminal 20 determines that the railway vehicle is in a coupled state of two or more train sets, the position information received from each of the vehicles 1 forming the coupled railway vehicle is stored for a certain period of time. The number of position information indicating the middle position and the number of position information indicating the rear position, which are monitored and received during a certain period of time, are used to determine the number of combined train sets (see steps S109, S110, and S111). ). With this, it is possible to determine whether the railway vehicle is two-coupled or three-coupled.

In addition, in the embodiment, the processor 21 of the terminal 20, when at least one of the number of position information indicating the middle position and the number of position information indicating the rear position is larger than the number of vehicles scheduled at the time of merging, Performs processing for announcing information prompting retransmission of location information. That is, a message to open the door again is displayed on the display 25 (step S112). This makes it possible to resend the position information at different times, thereby avoiding the mixing of position information from other formations.

In addition, in the embodiment, a plurality of cameras 15 (#1 to #4) are attached to both side surfaces of each vehicle 1 that constitutes a railway vehicle. In addition, the processor 21 of the terminal 20 includes information indicating the determination result of the formation state of the railroad vehicle, information indicating the traveling direction of the railroad vehicle, and information indicating the side to open the door when the railroad vehicle stops (platform door open (left side)). /right) or door opening (left/right)), among the plurality of cameras 15 (#1 to #4), the camera 15 used for imaging when stopped is specified for each vehicle 1, and the specified vehicle 1 A process for displaying an image captured by each camera 15 on a display 25 (display device) is performed. As a result, it is possible to image the vicinity of the door 5A or 5B, that is, the state of passengers getting on and off through the door 5A or 5B with an appropriate camera according to the organized state and the stopped state.

Further, in the embodiment, the processor 21 of the terminal 20 performs the process of specifying the camera 15 used for imaging when the train stops for each vehicle 1, and the information indicating the platform door opening side of the station where the railway vehicle will stop next (platform door This can be triggered by the reception of open (left/right). In addition, the processor 21 performs processing for specifying the camera 15 used for imaging when stopping for each vehicle 1, and information (door open (left/right)) and information indicating the stop of the railcar (low level 5 km/h detection) is received.

Further, in the embodiment, the processor 21 of the terminal 20 terminates the process of displaying the image captured by the camera of each of the identified vehicles on the display device upon receiving the information indicating the running of the railroad vehicle. can do. As described above, according to the camera system including the terminal 20, a plurality of cameras provided in each of the vehicles 1 for capturing images to be displayed on the display 25 of the terminal 20 by accurately determining the composition state of the railway vehicle. A good choice can be made among the cameras. The configurations of the embodiments described above can be modified as appropriate without departing from the scope of the present invention.

Reference Signs List 1 Vehicle 14 Recording device 20 Terminal 21 Processor 22 Storage device 23 Communication interface 24 Input device 25 Display 30, 31 access point

Claims (9)

An information processing device mounted on a railway vehicle consisting of a plurality of vehicles,
In the railroad vehicle, a receiving unit that receives, by wireless communication, position information indicating the relative position of each of the plurality of vehicles in the railroad vehicle;
The position information of the vehicle on which the information processing device is located indicates a front position corresponding to the front position of the railway vehicle when viewed in the direction of travel, and the direction of travel of the railway vehicle in the train set to which the vehicle on which the information processing device is located belongs. When the position information of the vehicle positioned at the tail end as viewed from the top indicates the rear position corresponding to the tail end of the railway vehicle, it is determined that the formation state of the railway vehicle is a single formation, and the vehicle positioned at the tail end a processing unit that determines that the composition state of the railway vehicle is a combined state of two or more compositions when the position information of the railway vehicle indicates a middle position between the front position and the rear position of the railway vehicle; ,
Information processing equipment including. The processing unit monitors the position information received from each of the vehicles forming the railway vehicle in the coupled state for a certain period of time when it is determined that the railway vehicle is in a coupled state of two or more trainsets, and The information processing apparatus according to claim 1, wherein the number of combined formations is determined using the number of position information indicating the middle position and the number of position information indicating the rear position received during a certain period of time. . The processing unit prompts retransmission of the position information when at least one of the number of position information indicating the middle position and the number of position information indicating the rear position is greater than the number of vehicles expected at the time of coupling. 3. The information processing apparatus according to claim 2, which performs a process of notifying information. A plurality of cameras are attached to both sides of each of the vehicles forming the railway vehicle,
The processing unit uses information indicating the determination result of the organization state of the railroad vehicle, information indicating the traveling direction of the railroad vehicle, and information indicating the side on which the door is opened when the railroad vehicle stops, to determine the plurality of 4. The process of specifying, for each of the vehicles, a camera used for imaging when the vehicle is stopped from among the cameras of the above, and displaying an image captured by the specified camera for each vehicle on a display device. The information processing device according to the item. The processing unit performs the process of specifying, for each vehicle, a camera to be used for imaging when the railway vehicle stops, triggered by the reception of information indicating which side of the platform door of the station at which the railway vehicle will stop next is received. Item 5. The information processing device according to item 4. The processing unit performs a process of specifying, for each vehicle, a camera to be used for imaging when the railway vehicle stops, information indicating a side of a door to be opened when the railway vehicle stops at the station where the railway vehicle will stop next, and information indicating the side of the door to be opened when the railway vehicle stops. 5. The information processing apparatus according to claim 4, wherein the information processing is performed when the indicating information is received. 7. The processing unit according to any one of claims 4 to 6, wherein, upon receipt of the information indicating the running of the railway vehicle, the processing unit displays the image captured by the camera of each of the identified vehicles on a display device. or the information processing device according to claim 1. An information processing device mounted on a railway vehicle comprising a plurality of vehicles receives position information indicating the relative position of each of the plurality of vehicles in the railway vehicle by wireless communication in the railway vehicle,
The position information of the vehicle on which the information processing device is located indicates a front position corresponding to the front position of the railway vehicle when viewed in the direction of travel, and the direction of travel of the railway vehicle in the train set to which the vehicle on which the information processing device is located belongs. When the position information of the vehicle positioned at the tail end as viewed from the top indicates the rear position corresponding to the tail end of the railway vehicle, it is determined that the formation state of the railway vehicle is a single formation, and the vehicle positioned at the tail end When the position information of indicates a middle position between the front position and the rear position of the railway vehicle, the formation state of the railway vehicle is determined to be a coupled state of two or more formations.
information processing method, including In the computer of the information processing device mounted on a railway car consisting of multiple cars,
A process of receiving, in the railroad vehicle, position information indicating the relative position of each of the plurality of vehicles in the railroad vehicle by wireless communication;
The position information of the vehicle on which the information processing device is located indicates a front position corresponding to the front position of the railway vehicle when viewed in the direction of travel, and the direction of travel of the railway vehicle in the train set to which the vehicle on which the information processing device is located belongs. When the position information of the vehicle positioned at the tail end as viewed from the top indicates the rear position corresponding to the tail end of the railway vehicle, it is determined that the formation state of the railway vehicle is a single formation, and the vehicle positioned at the tail end A process of determining that the formation state of the railway vehicle is a combined state of two or more formations when the position information of indicates a middle position between the front position and the rear position of the railway vehicle;
program to run.

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