JP7049532B1 - Failure judgment device and failure judgment method - Google Patents

Abstract

A wired transmission / reception unit (111) that performs wired communication with a ground station in a ground-to-vehicle communication system in which a plurality of ground stations installed on the ground and an on-board station mounted on a train formation can perform ground-to-vehicle communication by wireless communication. ), The ground station, and the control unit (112) that controls to accumulate the judgment standard information that becomes the communication status information of the on-board station when the ground station is communicating with the on-board station, and based on the judgment standard information. Further, it is provided with a failure type determination unit (115) for determining a failure type that occurs in the ground-to-vehicle communication system.

Description

The present disclosure relates to a fault determination device, a ground station, an on-board station, a ground-vehicle communication system, a control circuit, a storage medium, and a fault determination method used in a ground-to-vehicle communication system.

Conventionally, attention has been paid to a remote determination method for device failure and radio interference in wireless communication between a ground station, which is a radio station installed on the ground, and an on-board station, which is a radio station installed on a train. .. As a remote determination method of device failure and radio wave interference, there is a method of using packet arrival information in a radio station and received power information in a radio station. In Patent Document 1, as a method for determining a failure in wireless communication between a ground station and an on-board station, the on-board station measures the electric field strength of a transmission signal from the ground station in response to a request from the ground station. By notifying the ground station of the measurement result, if the absolute value of the difference between the maximum or minimum value of the electric field strength received from the on-board station and the reference value exceeds the threshold value, the ground station fails. The technique for determining the above is disclosed.

Japanese Patent No. 6465201

However, in the system described in Patent Document 1, the on-board station measures the electric field strength of the transmission signal from the ground station and sends the measurement result back to the ground station, so that the ground station can perform the measured electric field strength value and the ground. The failure of the ground station is determined by comparing it with the reference value held by the station. Therefore, the system described in Patent Document 1 has a problem that it can determine a ground station that has failed during ground-vehicle communication, but cannot specify a failed portion.

In a system as described in Patent Document 1, when a device failure occurs in a ground station or an on-board station, the service is continued by switching to an appropriate alternative station, and the device with the failure is identified, recovered, analyzed, and repaired. Is required. In addition, it is necessary to perform the same work in the case of communication interruption due to radio interference or a shield. Above all, the work of identifying and analyzing the failure generating device and the occurrence site depends on the work by the maintenance staff, and labor saving is required.

The present disclosure has been made in view of the above, and an object of the present invention is to obtain a failure occurrence device and a failure determination device capable of identifying a failure occurrence site when a failure occurs in a ground-to-vehicle communication system.

In order to solve the above-mentioned problems and achieve the object, in the fault determination device of the present disclosure, a plurality of ground stations installed on the ground and an on-board station mounted on a train formation communicate with each other by wireless communication. In a ground-vehicle communication system that can be performed, a wired transmission / reception unit that performs wired communication with a ground station, and a judgment standard that provides information on the communication status of the ground station and the ground station when the ground station is communicating with the on-board station. It includes a control unit that controls the accumulation of information, and a failure type determination unit that determines the failure type that occurs in the ground -to-vehicle communication system based on the determination standard information . There are multiple on-board stations mounted on the train formation, the ground station is communicating with the on-board station, and the control unit is the ground station, the on-board station, and the vehicle to which the on-board station is connected in the train formation. Control is performed to collect judgment standard information from the upper and higher-level devices, and the failure type judgment unit is responsible for the failure of the transmission / reception device of the ground station, the failure of the data processing device of the ground station, the failure of the wired interface termination circuit of the ground station, and the on-board station. Failure type of failure uniquely from among transmission / reception device failure, on-board station data processing device failure, on-board station wired interface termination circuit failure, ground station radio interference, on-board station radio interference, and no failure. Is characterized by determining .

The failure determination device according to the present disclosure has an effect that the failure generation device and the occurrence site when a failure occurs can be specified by the ground-to-vehicle communication system.

The figure which shows the configuration example of the ground-vehicle communication system which concerns on Embodiment 1. A block diagram showing a configuration example of the failure determination device according to the first embodiment. The first figure which shows the example of the hardware composition of the failure determination apparatus which concerns on Embodiment 1. The second figure which shows the example of the hardware composition of the failure determination apparatus which concerns on Embodiment 1. Block diagram showing a configuration example of a ground station according to the first embodiment The first figure which shows the example of the hardware composition of the ground station which concerns on Embodiment 1. The second figure which shows the example of the hardware composition of the ground station which concerns on Embodiment 1. Block diagram showing a configuration example of an on-board station according to the first embodiment A block diagram showing a configuration example of an on-vehicle upper device according to the first embodiment. The first figure which shows the example of the hardware composition of the on-board upper apparatus which concerns on Embodiment 1. The second figure which shows the example of the hardware composition of the on-board upper apparatus which concerns on Embodiment 1. The figure which shows the example of the judgment criterion information which is integrated in each apparatus of the ground-vehicle communication system which concerns on Embodiment 1. In the ground-to-vehicle communication system according to the first embodiment, a sequence diagram showing the operation of each device when the failure determination device accumulates determination reference information and determines the failure type. In the ground-to-vehicle communication system according to the first embodiment, a sequence diagram showing the operation of each device when the failure determination device accumulates determination reference information and determines the failure type. The figure which shows the example of the correspondence table with the failure type used in the failure judgment apparatus which concerns on Embodiment 1 and judgment criteria information. A flowchart showing the operation of the failure determination device according to the first embodiment. A flowchart showing the operation of the ground station according to the first embodiment. A flowchart showing the operation of the on-board upper device according to the first embodiment. The figure which shows the configuration example of the ground-vehicle communication system which concerns on Embodiment 2. The figure which shows the configuration example of the ground-vehicle communication system which concerns on Embodiment 3.

Hereinafter, the fault determination device, the ground station, the on-board station, the ground-vehicle communication system, the control circuit, the storage medium, and the fault determination method according to the embodiment of the present disclosure will be described in detail with reference to the drawings.

Embodiment 1.
FIG. 1 is a diagram showing a configuration example of the ground-to-vehicle communication system 600 according to the first embodiment. The ground-to-vehicle communication system 600 includes a failure determination device 100, ground stations 200-1 to 200-4, on-vehicle stations 300-1 to 300-4, and on-vehicle superior devices 400-1 to 400-2. Be prepared. The ground-to-vehicle communication system 600 is a ground-to-vehicle communication system for railways, and is applied to, for example, platform door control.

As shown in FIG. 1, the on-board stations 300-1 to 300-2 and the on-board superior device 400-1 are mounted on the train formation 500-1, and the on-board stations 300-3 to 300-4 and the on-board superior device 400-1. The 400-2 is mounted on the train formation 500-2. The fault determination device 100 is connected to the ground stations 200-1 to 200-4. The ground stations 200-1 to 200-4 are installed along the rails (not shown) on which the train formations 500-1 to 500-2 run, that is, on the ground, and are wirelessly connected to the on-board stations 300-1 to 300-4. It is a radio station capable of two-way ground-to-vehicle communication by communication. On-board stations 300-1 to 300-4 are radio stations capable of bidirectional ground-to-vehicle communication with ground stations 200-1 to 200-4. The on-board upper device 400-1 is connected to the on-board stations 300-1 to 300-2 in the train formation 500-1. The on-board upper device 400-2 is connected to the on-board stations 300-3 to 300-4 in the train formation 500-2.

In the following description, when the ground stations 200-1 to 200-4 are not distinguished, the ground station 200 is referred to, and when the on-board stations 300-1 to 300-4 are not distinguished, the on-board station 300 is referred to. When the devices 400-1 to 400-2 are not distinguished, it may be referred to as an on-board upper device 400, and when the train formations 500-1 to 500-2 are not distinguished, it may be referred to as a train formation 500. Further, the fault determination device 100, the ground station 200, the on-board station 300, and the on-board superior device 400 may be collectively referred to as a device, or each of them may be simply referred to as a device. In the example of FIG. 1, the ground-to-vehicle communication system 600 includes two train formations 500, but may be one or three or more. Further, in the example of FIG. 1, two on-board stations 300 are mounted on one train formation 500, but three or more on-board stations 300 may be mounted on one train formation 500. .. Further, in the example of FIG. 1, the number of ground stations 200 connected to the failure determination device 100 is four, but it may be three or less, or five or more. In the ground-to-vehicle communication system 600, it is assumed that one ground station 200 corresponds to one on-board station 300. Specifically, the on-board station 300 and the ground station 200 establish a communication connection and perform wireless communication as described later.

The configuration of each device will be described. FIG. 2 is a block diagram showing a configuration example of the failure determination device 100 according to the first embodiment. FIG. 2 shows a functional block of the failure determination device 100. The failure determination device 100 includes a wired transmission / reception unit 111, a control unit 112, an external output unit 113, a storage unit 114, and a failure type determination unit 115. The wired transmission / reception unit 111 transmits / receives a wired packet to / from the ground station 200 by wired communication. The control unit 112 performs wired packet generation, external output information generation, determination reference information accumulation control, failure type determination control, determination reference information determination threshold value determination, failure type determination cycle determination, and the like. The control unit 112 controls to accumulate determination reference information which is information on the communication status of the ground station 200. Further, the control unit 112 controls to accumulate determination reference information which is information on the communication state of the on-board station 300 when the ground station 200 is communicating with the on-board station 300. The external output unit 113 outputs information such as the failure type determined by the failure type determination unit 115 to an external device (not shown). The storage unit 114 stores the determination standard information accumulated by the failure determination device 100, the determination reference information accumulated from other devices, and the like. The failure type determination unit 115 determines the failure type that occurs in the ground-to-vehicle communication system 600, specifically, the ground station 200 and the on-board station 300, based on the determination standard information.

FIG. 3 is a first diagram showing an example of the hardware configuration of the failure determination device 100 according to the first embodiment. FIG. 4 is a second diagram showing an example of the hardware configuration of the failure determination device 100 according to the first embodiment. In the failure determination device 100, the wired transmission / reception unit 111 is a ground station interface termination circuit 101. The external output unit 113 is an external interface termination circuit 104. The control unit 112, the storage unit 114, and the failure type determination unit 115 are realized by the power supply circuit 105, the memory 102 and the processor 103, or the processing circuit 106. As described above, the control unit 112, the storage unit 114, and the failure type determination unit 115 may be the processor 103 and the memory 102 that execute the program stored in the memory 102 for the configuration for actually performing the processing. The processing circuit 106, which is dedicated hardware, may be used. The processing circuit 106 is also called a control circuit.

When the control unit 112, the storage unit 114, and the failure type determination unit 115 are composed of the processor 103 and the memory 102, each function of the control unit 112, the storage unit 114, and the failure type determination unit 115 may be software, firmware, or It is realized by the combination of software and firmware. The software or firmware is written as a program and stored in the memory 102. In the example of FIG. 3, each function is realized by the processor 103 reading and executing the program stored in the memory 102. That is, the failure determination device 100 includes a memory 102 for storing a program in which the processing of the failure determination device 100 is eventually executed. It can be said that this program is a program for causing the failure determination device 100 to execute each function. 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.

Here, the processor 103 is, for example, a CPU (Central Processing Unit), a processing device, an arithmetic unit, a microprocessor, a microcomputer, a DSP (Digital Signal Processor), or the like. Further, the memory 102 may be non-volatile or volatile, for example, RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable ROM), EPROM (registered trademark) (Electrically EPROM), or the like. A semiconductor memory, a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, a DVD (Digital Versatile Disc), or the like is applicable. The processing circuit 106 shown in FIG. 4 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 thereof. The thing is applicable. The same applies to the processor, memory, and processing circuit described below.

The control unit 112, the storage unit 114, and the failure type determination unit 115 may be partially realized by dedicated hardware and partially realized by software or firmware. As described above, the control unit 112, the storage unit 114, and the failure type determination unit 115 can realize each of the above-mentioned functions by the dedicated hardware, software, firmware, or a combination thereof.

FIG. 5 is a block diagram showing a configuration example of the ground station 200 according to the first embodiment. FIG. 5 shows a functional block of the ground station 200. The ground station 200 includes a wireless transmission / reception unit 211, a control unit 212, a wired transmission / reception unit 213, and a storage unit 214. The wireless transmission / reception unit 211 transmits / receives wireless packets to / from the on-board station 300 by wireless communication. The control unit 212 performs wireless packet generation, wired packet generation, determination of the accumulation cycle which is the cycle for accumulating the determination reference information, determination of the measurement report slot, measurement of the received power value, determination of the determination reference information, and the like. The control unit 212 determines the accumulation cycle based on the failure type determination cycle determined by the failure determination device 100, and controls to transmit the determination reference information to the failure determination device 100 for each accumulation cycle. The wired transmission / reception unit 213 transmits / receives a wired packet to / from the failure determination device 100. The storage unit 214 stores radio frame information, packet reception status, received power value, and the like.

FIG. 6 is a first diagram showing an example of the hardware configuration of the ground station 200 according to the first embodiment. FIG. 7 is a second diagram showing an example of the hardware configuration of the ground station 200 according to the first embodiment. In the ground station 200, the radio transmission / reception unit 211 is a transmission / reception device 207 including an antenna 201 and a radio interface termination circuit 202. The wired transmission / reception unit 213 is a wired interface termination circuit 205. The control unit 212 and the storage unit 214 are realized by the data processing device 208. The data processing device 208 includes a power supply circuit 206, a memory 203 and a processor 204, or a processing circuit 209. The control unit 212 and the storage unit 214 may be a processor 204 and a memory 203 that execute a program stored in the memory 203 for a configuration that actually performs processing, or may be a processing circuit 209 that is dedicated hardware. There may be. The processing circuit 209 is also called a control circuit. The memory 203, the processor 204, and the processing circuit 209 are the same as the memory 102, the processor 103, and the processing circuit 106 of the failure determination device 100 described above. A part of the control unit 212 and the storage unit 214 may be realized by dedicated hardware, and a part may be realized by software or firmware. As described above, the control unit 212 and the storage unit 214 can realize each of the above-mentioned functions by the dedicated hardware, software, firmware, or a combination thereof.

FIG. 8 is a block diagram showing a configuration example of the on-board station 300 according to the first embodiment. FIG. 8 shows a functional block of the on-board station 300. The on-board station 300 includes a wireless transmission / reception unit 311, a control unit 312, a wired transmission / reception unit 313, and a storage unit 314. The wireless transmission / reception unit 311 transmits / receives wireless packets to / from the ground station 200 by wireless communication. The control unit 312 performs wireless packet generation, wired packet generation, determination of the determination reference information accumulation cycle, determination of the measurement report slot, measurement of the received power value, determination of the determination reference information, and the like. The control unit 312 determines the accumulation cycle based on the failure type determination cycle determined by the failure determination device 100, and controls to transmit the determination reference information to the failure determination device 100 for each accumulation cycle. The wired transmission / reception unit 313 transmits / receives a wired packet to / from the vehicle host device 400. The storage unit 314 stores radio frame information, packet reception status, received power value, and the like.

Since the hardware configuration of the on-board station 300 is the same as the hardware configuration of the ground station 200 described above, detailed description thereof will be omitted.

FIG. 9 is a block diagram showing a configuration example of the on-vehicle upper device 400 according to the first embodiment. FIG. 9 shows a functional block of the on-vehicle upper device 400. The on-vehicle upper device 400 includes a wired transmission / reception unit 411, a control unit 412, and a storage unit 413. The wired transmission / reception unit 411 transmits / receives a wired packet to / from the on-board station 300. The control unit 412 determines the accumulation cycle of the determination reference information, generates a wired packet, controls the accumulation of the determination reference information, and the like. The storage unit 413 stores determination reference information and the like.

FIG. 10 is a first diagram showing an example of the hardware configuration of the on-board upper device 400 according to the first embodiment. FIG. 11 is a second diagram showing an example of the hardware configuration of the on-board upper device 400 according to the first embodiment. In the on-board upper device 400, the wired transmission / reception unit 411 is realized by the on-board station interface termination circuit 401. The control unit 412 and the storage unit 413 are realized by the power supply circuit 404, the memory 402 and the processor 403, or the processing circuit 405. The control unit 412 and the storage unit 413 may be a processor 403 and a memory 402 that execute a program stored in the memory 402 for a configuration that actually performs processing, or may be a processing circuit 405 that is dedicated hardware. There may be. The processing circuit 405 is also called a control circuit. The memory 402, the processor 403, and the processing circuit 405 are the same as the memory 102, the processor 103, and the processing circuit 106 of the failure determination device 100 described above. The control unit 412 and the storage unit 413 may be partially realized by dedicated hardware and partly realized by software or firmware. As described above, the control unit 412 and the storage unit 413 can realize each of the above-mentioned functions by the dedicated hardware, software, firmware, or a combination thereof.

Here, the determination standard information accumulated in each device of the ground-to-vehicle communication system 600 will be described. FIG. 12 is a diagram showing an example of determination standard information accumulated in each device of the ground-to-vehicle communication system 600 according to the first embodiment. The determination reference information 1 is information indicating the transmission state of the radio packet of the on-board station 300 monitored by the ground station 200, that is, the radio transmission state, and is accumulated by the ground station 200. The determination reference information 2 is information indicating the transmission state of the radio packet of the ground station 200 monitored by the on-board station 300, that is, the radio transmission state, and is accumulated by the on-board station 300. The determination reference information 3 is information indicating the transmission state of the radio packet of the other ground station 200 monitored by the ground station 200, that is, the radio transmission state, and is accumulated by the ground station 200. The determination reference information 4 is information indicating whether or not the received power is exceeded when the ground station 200 monitored by the ground station 200 receives a radio packet, and the ground station 200 is accumulated. The determination reference information 5 is information indicating whether or not the received power is exceeded when the on-board station 300 monitored by the on-board station 300 receives a wireless packet, and the on-board station 300 is integrated. The determination reference information 6 is information indicating the communication state of the wired packet of the ground station 200 monitored by the failure determination device 100, and is integrated by the failure determination device 100. The determination reference information 7 is information indicating the communication state of the wired packet of the on-board station 300 monitored by the on-board upper device 400, and the on-board upper device 400 is integrated. In the following description, when the judgment standard information 1 to 7 are not distinguished, it is simply referred to as the judgment standard information. The control unit 112 of the failure determination device 100 collects determination reference information from each device.

Subsequently, in the ground-to-vehicle communication system 600, the operation of each device when the failure determination device 100 accumulates the determination reference information and determines the failure type based on the accumulated determination reference information will be described. 13 and 14 are sequence diagrams showing the operation of each device when the failure determination device 100 collects determination reference information and determines the failure type in the ground-to-vehicle communication system 600 according to the first embodiment. Hereinafter, unless otherwise specified, FIGS. 13 and 14 are collectively referred to as a sequence diagram.

In the failure determination device 100, the control unit 112 determines the determination threshold value of the determination reference information and the failure type determination cycle (step S101). The control unit 112 generates a wired packet including the determination threshold value of the determination reference information and the failure type determination cycle, and notifies the ground stations 200-1 and 200-2 via the wired transmission / reception unit 111 (step S102). Further, the control unit 112 determines an accumulation cycle, which is a cycle for accumulating the determination reference information 6, so that the cycle is shorter than the failure type determination cycle (step S103). The control unit 112 stores the accumulation cycle of the determination reference information 6 in the storage unit 114.

In the ground stations 200-1 and 200-2, when the control unit 212 receives the wired packet from the failure determination device 100 via the wired transmission / reception unit 213, the control unit 212 extracts the determination threshold value of the determination reference information and the failure type determination cycle from the wired packet. do. The control unit 212 determines an accumulation cycle for accumulating the determination reference information 1, the determination reference information 3, and the determination reference information 4 in the failure determination device 100 based on the failure type determination cycle (step S104). The accumulation cycle of each judgment criterion information is shorter than the failure type judgment cycle. The control unit 212 stores the accumulation cycle of each determination reference information in the storage unit 214. Further, the control unit 212 of the ground stations 200-1 and 200-2 determines the timing and channel for transmitting the broadcast information described later (step S105). If the timing and channel for transmitting the broadcast information by each ground station 200 are fixed, step S105 may be omitted.

After that, in the ground-vehicle communication system 600, the ground station 200-1 transmits a radio packet of notification information to the on-board station 300-1, and in parallel, the ground station 200-2 is sent to the on-board station 300-2. On the other hand, an operation of transmitting a wireless packet of broadcast information is performed. Since the operations of the ground stations 200-1 and 200-2 are the same, the explanation will be focused on the operations related to the ground station 200-1.

The ground-to-vehicle communication system 600 performs an operation of accumulating the determination reference information 3 (step S106). Specifically, the control unit 212 of the ground station 200-1 generates a wireless packet using the determination threshold value of the determination reference information and the failure type determination cycle as broadcast information, and the on-board station 300-1 via the wireless transmission / reception unit 211. (Step S107). At this time, the notification information transmitted by the ground station 200-1 to the on-board station 300-1 is also received by the ground station 200-2. Further, it is assumed that the ground stations 200-1 and 200-2 have known timings and channels for transmitting the broadcast information by the other ground stations 200, respectively.

In the ground station 200-2, the control unit 212 determines whether or not the broadcast information has been received on the above-mentioned channel via the wireless transmission / reception unit 211, that is, whether or not the broadcast information can be received, and stores the determination result of whether or not the reception is possible. Store in 214. The control unit 212 of the ground station 200-2 uses the determination result of whether or not the notification information stored in the storage unit 214 can be received and the determination threshold value of the determination reference information 3 for each accumulation cycle of the determination reference information 3. , The determination reference information 3 is determined (step S108). Specifically, the control unit 212 of the ground station 200-2 determines that the failure occurrence criterion is not satisfied when the broadcast information is received at or above the threshold ratio indicated by the determination threshold value, and the broadcast information is indicated by the determination threshold value. If it does not receive more than the threshold ratio, it is judged that the criterion for occurrence of failure is satisfied. The control unit 212 of the ground station 200-2 uses the determination result as the determination reference information 3, generates a wired packet including the determination reference information 3, and transmits the wired packet to the failure determination device 100 via the wired transmission / reception unit 213 (step S109). ). In the failure determination device 100, the control unit 112 extracts the determination reference information 3 from the wired packet received via the wired transmission / reception unit 111 and stores it in the storage unit 114. In the ground-to-vehicle communication system 600, each device periodically performs the operation of step S106.

Although the description is omitted in the sequence diagram, as described above, in parallel with step S106, the control unit 212 of the ground station 200-2 generates a radio packet of broadcast information via the radio transmission / reception unit 211. Send to the on-board station 300-2. At this time, the notification information transmitted by the ground station 200-2 to the on-board station 300-2 is also received by the ground station 200-1. In the ground station 200-1, the control unit 212 determines whether or not the broadcast information can be received, and stores the information on whether or not the broadcast information can be received in the storage unit 214. The control unit 212 of the ground station 200-1 uses the information on whether or not the notification information stored in the storage unit 214 can be received and the determination threshold value of the determination reference information 3 for each accumulation cycle of the determination reference information 3. Judgment of judgment criterion information 3 is performed. The control unit 212 of the ground station 200-1 uses the determination result as the determination reference information 3, generates a wired packet including the determination reference information 3, and transmits the wired packet to the failure determination device 100 via the wired transmission / reception unit 213. In the failure determination device 100, the control unit 112 extracts the determination reference information 3 from the wired packet received via the wired transmission / reception unit 111 and stores it in the storage unit 114.

Return to the explanation of the sequence diagram. In the on-board station 300-1, when the control unit 312 receives the broadcast information from the ground station 200-1 via the wireless transmission / reception unit 311, the control unit 312 extracts the determination threshold value of the determination reference information and the failure type determination cycle from the broadcast information. The control unit 312 determines an accumulation cycle for accumulating the determination reference information 2 and the determination reference information 5 in the failure determination device 100 based on the failure type determination cycle (step S110). The accumulation cycle of each judgment criterion information is shorter than the failure type judgment cycle. At this time, the control unit 312 determines the accumulation cycle for transmitting the determination reference information based on the number of on-board stations 300 mounted on the train formation 500-1. Specifically, the control unit 312 integrates the number of on-board stations 300 mounted on the train formation 500-1, two in the example of FIG. 1, and the accumulation cycle of each determination reference information so as to be inversely proportional. Determine the cycle. This is because as the number of on-board stations 300 increases, the number of wireless transmission paths between the ground station 200 and the on-board station 300 increases, and it becomes possible to collect on a plurality of routes. To be able to do it.

Since the on-board station 300-2 also receives the notification information from the ground station 200-2 in parallel with the above operation, the control units 312 of the on-board stations 300-1 and 300-2 cooperate with each other. The operation of step S110 may be performed. The control unit 312 stores the accumulation cycle of each determination reference information in the storage unit 314. The control unit 312 of the on-board station 300-1 generates a wired packet including the determination threshold value of the determination reference information and the failure type determination cycle, and notifies the on-board host device 400-1 via the wired transmission / reception unit 313 (step). S111).

When the control unit 412 receives the wired packet from the on-board station 300-1 via the wired transmission / reception unit 411 in the on-board upper device 400-1, the control unit 412 extracts the determination threshold value of the determination reference information and the failure type determination cycle from the wired packet. do. The control unit 412 determines an accumulation cycle for accumulating the determination reference information 7 in the failure determination device 100 based on the failure type determination cycle (step S112). The accumulation cycle of the judgment reference information 7 is shorter than the failure type judgment cycle. The control unit 412 stores the accumulation cycle of the determination reference information 7 in the storage unit 413.

The control unit 212 of the ground station 200-1 and the control unit 312 of the on-board station 300-1 establish a communication connection between the ground station 200-1 and the on-board station 300-1 (step S113). Further, the control unit 212 of the ground station 200-1 and the control unit 312 of the on-board station 300-1 are between the ground station 200-1 and the on-board station 300-1 based on the notified failure type determination cycle. Determines the measurement report slot in the wireless frame when wirelessly transmitting the determination reference information in (step S114). It is assumed that the radio frame length is a fixed value and is known in the fault determination device 100, the ground station 200, the on-board station 300, and the on-board superior device 400. The control unit 112 of the failure determination device 100 determines the failure type determination cycle of the failure type determination unit 115, and the wireless frame length of the wireless frame used when the ground station 200 and the on-board station 300 perform wireless communication. , And if N is an integer of 1 or more, the failure type determination cycle is determined so as to be N times the radio frame length. The control unit 212 of the ground station 200-1 determines that the measurement report slot is one slot for the N radio frame. Further, the control unit 212 of the ground station 200-1 may determine that the measurement report slot is continuously transmitted in a plurality of slots in one radio frame in the N radio frame, or within the failure type determination cycle. It may be decided to be continuously transmitted between a plurality of radio frames of. By continuously transmitting the measurement report slots within or between frames, it is expected that the accuracy of the determination reference information to the failure determination device 100 will be improved.

Similarly, the control unit 312 of the on-board station 300-1 may also determine that the measurement report slot is continuously transmitted in a plurality of slots in one radio frame in the N radio frame, or may determine the failure type. It may be decided to be continuously transmitted between a plurality of radio frames in a cycle. That is, the control unit 212 of the ground station 200-1 and the control unit 312 of the on-board station 300-1 may control to continuously transmit and transmit the determination reference information within or between radio frames. ..

The ground-to-vehicle communication system 600 performs an operation of accumulating determination reference information 1, 2, 4, and 5 (step S115). Specifically, the control unit 212 of the ground station 200-1 generates a radio packet and transmits it to the on-board station 300-1 in the downlink slot in the radio frame via the radio transmission / reception unit 211 (step S116). ). The control unit 312 of the on-board station 300-1 generates a radio packet and transmits it to the ground station 200-1 in the uplink slot in the radio frame via the radio transmission / reception unit 311 (step S117).

The control unit 212 of the ground station 200-1 determines whether or not the radio packet can be received at the timing of transmitting the radio packet from the on-board station 300-1, and stores the determination result of whether or not the radio packet can be received in the storage unit 214. The control unit 212 of the ground station 200-1 determines whether or not the radio packet from the on-board station 300-1 stored in the storage unit 214 can be received and the determination reference information for each accumulation cycle of the determination reference information 1. The determination reference information 1 is determined using the determination threshold value of 1 (step S118). Specifically, the control unit 212 of the ground station 200-1 determines that the failure occurrence criterion is not satisfied when the radio packet is received at the threshold ratio indicated by the determination threshold, and the wireless packet is indicated by the determination threshold. If it does not receive more than the threshold ratio, it is judged that the criterion for occurrence of failure is satisfied. The control unit 212 of the ground station 200-1 uses the determination result as the determination reference information 1, generates a wired packet including the determination reference information 1, and transmits the wired packet to the failure determination device 100 via the wired transmission / reception unit 213 (step S119). .. In the failure determination device 100, the control unit 112 extracts the determination reference information 1 from the wired packet received via the wired transmission / reception unit 111 and stores it in the storage unit 114.

Further, the control unit 212 of the ground station 200-1 measures the received power value when the radio packet from the on-board station 300-1 is received, and stores the measurement result in the storage unit 214. Generally, when communication is interrupted by an interference wave from another system, the received power value at the time of receiving a wireless packet becomes large due to the influence of the interference wave. Therefore, the control unit 212 of the ground station 200-1 can determine whether or not there is a failure by determining whether or not the received power value exceeds the threshold value at the time of receiving the radio packet. The control unit 212 of the ground station 200-1 determines the measurement result of the received power value of the radio packet from the on-board station 300-1 stored in the storage unit 214 and the determination standard for each accumulation cycle of the determination reference information 4. The determination reference information 4 is determined using the determination threshold value of the information 4 (step S120). Specifically, when the control unit 212 of the ground station 200-1 has a ratio in which the received power value of the radio packet is equal to or more than the threshold specified for determining whether or not the radio packet is exceeded is equal to or less than the threshold ratio indicated by the determination threshold. If it is determined that the failure occurrence criteria are not met and the rate at which the received power value of the radio packet exceeds the threshold value specified for determining whether or not the radio packet is exceeded exceeds the threshold value indicated by the determination threshold value, the failure occurrence criteria is used. Determined to meet. The control unit 212 of the ground station 200-1 uses the determination result as the determination reference information 4, generates a wired packet including the determination reference information 4, and transmits the wired packet to the failure determination device 100 via the wired transmission / reception unit 213 (step S121). ). In the failure determination device 100, the control unit 112 extracts the determination reference information 4 from the wired packet received via the wired transmission / reception unit 111 and stores it in the storage unit 114.

The control unit 312 of the on-board station 300-1 determines whether or not the radio packet can be received at the timing of transmitting the radio packet from the ground station 200-1, and stores the determination result of whether or not the radio packet can be received in the storage unit 314. The control unit 312 of the on-board station 300-1 determines whether or not the radio packet from the ground station 200-1 stored in the storage unit 314 can be received and the determination standard information for each accumulation cycle of the determination reference information 2. The determination reference information 2 is determined using the determination threshold value of 2 (step S122). Specifically, the control unit 312 of the on-board station 300-1 determines that the failure occurrence criterion is not satisfied when the wireless packet is received at the threshold ratio indicated by the determination threshold, and indicates the wireless packet with the determination threshold. If it does not receive more than the threshold ratio, it is judged that the criterion for occurrence of failure is satisfied. The control unit 312 of the on-board station 300-1 uses the determination result as the determination reference information 2, generates a wired packet including the determination reference information 2, and transmits the wired packet to the on-board host device 400 via the wired transmission / reception unit 313 (). Step S123).

In the on-vehicle upper device 400, when the control unit 412 receives the wired packet including the determination reference information 2 via the wired transmission / reception unit 411, all the on-vehicle stations 300 connected to the on-vehicle upper device 400, in this case, the vehicle. It is transmitted to the upper stations 300-1 and 300-2 (step S124). When the control unit 312 of the on-board station 300 receives the wired packet via the wired transmission / reception unit 313, the control unit 312 extracts the determination reference information 2 from the wired packet. The control unit 312 of the on-board station 300 generates a radio packet in which the determination reference information 2 is stored in the measurement report slot in the radio frame, and transmits it to the ground station 200 via the radio transmission / reception unit 311. When the control unit 212 of the ground station 200 receives the radio packet via the radio transmission / reception unit 211, the control unit 212 extracts the determination reference information 2 from the radio packet. The control unit 212 of the ground station 200 generates a wired packet including the determination reference information 2, and transmits the wired packet to the failure determination device 100 via the wired transmission / reception unit 213. In the failure determination device 100, the control unit 112 extracts the determination reference information 2 from the wired packet received via the wired transmission / reception unit 111 and stores it in the storage unit 114.

Further, the control unit 312 of the on-board station 300-1 measures the received power value when the radio packet from the ground station 200-1 is received, and stores the measurement result in the storage unit 314. As described above, when communication is interrupted due to an interference wave from another system, the received power value at the time of receiving a wireless packet becomes large due to the influence of the interference wave. Therefore, the control unit 312 of the on-board station 300-1 can determine whether or not there is a failure by determining whether or not the received power value exceeds the threshold value at the time of receiving the wireless packet. The control unit 312 of the on-board station 300-1 determines the measurement result of the received power value of the radio packet from the ground station 200-1 stored in the storage unit 314 and the determination standard for each accumulation cycle of the determination reference information 5. The determination reference information 5 is determined using the determination threshold value of the information 5 (step S125). Specifically, the control unit 312 of the on-board station 300-1 has a case where the ratio at which the received power value of the radio packet becomes equal to or greater than the threshold specified for determining whether or not the radio packet is exceeded is equal to or less than the threshold ratio indicated by the determination threshold. Judges that the failure occurrence criteria are not met, and if the rate at which the received power value of the radio packet exceeds the threshold value specified for determining whether or not it exceeds exceeds the threshold value indicated by the determination threshold value, the failure occurrence criteria It is determined that the condition is satisfied. The control unit 312 of the on-board station 300-1 uses the determination result as the determination reference information 5, generates a wired packet including the determination reference information 5, and transmits the wired packet to the on-board host device 400 via the wired transmission / reception unit 213 ( Step S126).

In the on-vehicle upper device 400, when the control unit 412 receives the wired packet including the determination reference information 5 via the wired transmission / reception unit 411, all the on-vehicle stations 300 connected to the on-vehicle upper device 400, in this case, the vehicle. It is transmitted to the upper stations 300-1 and 300-2 (step S127). When the control unit 312 of the on-board station 300 receives the wired packet via the wired transmission / reception unit 313, the control unit 312 extracts the determination reference information 5 from the wired packet. The control unit 312 of the on-board station 300 generates a radio packet in which the determination reference information 5 is stored in the measurement report slot in the radio frame, and transmits it to the ground station 200 via the radio transmission / reception unit 311. When the control unit 212 of the ground station 200 receives the radio packet via the radio transmission / reception unit 211, the control unit 212 extracts the determination reference information 5 from the radio packet. The control unit 212 of the ground station 200 generates a wired packet including the determination reference information 5, and transmits the wired packet to the failure determination device 100 via the wired transmission / reception unit 213. In the failure determination device 100, the control unit 112 extracts the determination reference information 5 from the wired packet received via the wired transmission / reception unit 111 and stores it in the storage unit 114. In the ground-to-vehicle communication system 600, each device periodically performs the operation of step S115.

In the ground-to-vehicle communication system 600, as described above, the ground station 200-2 and the on-board station 300-2 transmit and receive wireless packets in parallel with the operation of step S115 to determine the determination reference information 1 and the determination criterion. The operation of accumulating the information 2, the determination standard information 4, and the determination standard information 5 is performed.

The ground-to-vehicle communication system 600 performs an operation of accumulating the determination reference information 6 (step S128). Specifically, the control unit 112 of the failure determination device 100 generates a health check request for each accumulation cycle of the determination reference information 6 determined in step S103, and transmits the health check request to the ground station 200-2 via the wired transmission / reception unit 111. (Step S129). When the control unit 212 of the ground station 200-2 receives the health check request via the wired transmission / reception unit 213, the control unit 212 generates a health check response which is a response to the health check request, and the failure determination device 100 via the wired transmission / reception unit 213. (Step S130).

Here, since the ground station 200-2 cannot generate a health check response when the control unit 212 is out of order, the ground station 200-2 does not generate the health check response and does not transmit the health check response. Further, since the ground station 200-2 cannot receive the health check request when the wired transmission / reception unit 213 is out of order, the ground station 200-2 does not receive the health check request, generate the health check response, or transmit the health check response. The control unit 112 of the failure determination device 100 can receive a health check response from the ground station 200-2 via the wired transmission / reception unit 111. The control unit 112 of the failure determination device 100 determines the determination reference information 6 depending on whether or not a health check response has been received (step S131). Specifically, the control unit 112 of the failure determination device 100 determines that the failure occurrence criterion is not satisfied if the health check response can be received, and determines the failure occurrence criterion if the failure occurrence criterion cannot be received. It is determined that the condition is satisfied. The control unit 112 of the failure determination device 100 uses the determination result as the determination reference information 6, and stores the determination reference information 6 in the storage unit 114. In the ground-to-vehicle communication system 600, each device periodically performs the operation of step S128.

In the ground-to-vehicle communication system 600, as described above, in parallel with the operation of step S128, the failure determination device 100 transmits a health check request to the ground station 200-1, and the ground station 200-1 sends a health check request. The operation of accumulating the determination reference information 6 is performed depending on whether or not the health check response is received.

The ground-to-vehicle communication system 600 performs an operation of accumulating the determination reference information 7 (step S132). Specifically, the control unit 412 of the on-board upper device 400 generates a health check request for each accumulation cycle of the determination reference information 7 determined in step S112, and the on-board station 300-2 via the wired transmission / reception unit 411. (Step S133). When the control unit 312 of the on-board station 300-2 receives the health check request via the wired transmission / reception unit 313, the control unit 312 generates a health check response, which is a response to the health check request, and is higher on the vehicle via the wired transmission / reception unit 313. It is transmitted to the apparatus 400 (step S134).

Here, the on-board station 300-2 does not generate the health check response and does not transmit the health check response because the health check response cannot be generated when the control unit 312 is out of order. Further, since the on-board station 300-2 cannot receive the health check request when the wired transmission / reception unit 313 is out of order, the on-board station 300-2 does not receive the health check request, generate the health check response, or transmit the health check response. The control unit 412 of the on-board upper device 400 can receive the health check response from the on-board station 300-2 via the wired transmission / reception unit 411. The control unit 412 of the on-board upper device 400 determines the determination reference information 7 depending on whether or not the health check response is received (step S135). Specifically, the control unit 412 of the on-board superior device 400 determines that the failure occurrence criterion is not satisfied if the health check response can be received, and the failure occurrence criterion if the health check response cannot be received. It is determined that the condition is satisfied. The control unit 412 of the on-board upper device 400 uses the determination result as the determination reference information 7, and stores the determination reference information 7 in the storage unit 413.

The control unit 412 of the on-board upper device 400 generates a wired packet including the determination reference information 7, and all the on-board stations 300 connected to the on-board upper device 400, in this case, the on-board stations 300-1, 300-. It is transmitted to 2 (step S136). When the control unit 312 of the on-board station 300 receives the wired packet via the wired transmission / reception unit 313, the control unit 312 extracts the determination reference information 7 from the wired packet. The control unit 312 of the on-board station 300 generates a radio packet in which the determination reference information 7 is stored in the measurement report slot in the radio frame, and transmits it to the ground station 200 via the radio transmission / reception unit 311. When the control unit 212 of the ground station 200 receives the radio packet via the radio transmission / reception unit 211, the control unit 212 extracts the determination reference information 7 from the radio packet. The control unit 212 of the ground station 200 generates a wired packet including the determination reference information 7, and transmits the wired packet to the failure determination device 100 via the wired transmission / reception unit 213. In the failure determination device 100, the control unit 112 extracts the determination reference information 7 from the wired packet received via the wired transmission / reception unit 111 and stores it in the storage unit 114. In the ground-to-vehicle communication system 600, each device periodically performs the operation of step S132.

In the ground-to-vehicle communication system 600, as described above, in parallel with the operation of step S132, the on-board higher-level device 400 transmits a health check request to the on-board station 300-1, and the on-board station 300- The operation of accumulating the determination reference information 7 is performed depending on whether or not the health check response from 1 is received.

In the present embodiment, each device transmits the determination reference information to the failure determination device 100, but at this time, each device transmits the determination reference information as well as the accumulation cycle of each determination reference information to the failure determination device 100. You may. In this case, the control unit 112 of the failure determination device 100 also stores the accumulation cycle of each received determination reference information in the storage unit 114.

In the failure determination device 100, the failure type determination unit 115 determines the failure type from the accumulated determination reference information (step S137). Specifically, the failure type determination unit 115 has the determination standard information 1 to 7 accumulated in the failure type determination cycle and stored in the storage unit 114 for each failure type determination cycle, and the failure shown in FIG. The failure type is determined using the correspondence table between the type and the criterion information. FIG. 15 is a diagram showing an example of a correspondence table between the failure type used in the failure determination device 100 according to the first embodiment and the determination standard information. When the failure type is roughly classified, the failure type determination unit 115 uniquely determines the failure type from the device failure and the radio wave failure. Specifically, as shown in FIG. 15, the failure type determination unit 115 has, regarding the failure type, a ground station transmission / reception device failure, a ground station data processing device failure, a ground station wired interface termination circuit failure, an on-board station transmission / reception device failure, and the like. Uniquely determines which type of failure corresponds to the nine targets: on-board station data processing device failure, on-board station wired interface termination circuit failure, ground station radio interference, on-board station radio interference, and no failure. do.

In FIG. 15, white circles are cases where the criteria for occurrence of failures are satisfied, and black circles are cases where the criteria for occurrence of failures are not satisfied. In addition, the x mark indicates that the signal to be monitored such as a packet has not been received at a specified rate or more, and is treated as unreceivable. That is, the failure type determination unit 115 uses the determination standard information newly accumulated in the failure type determination cycle to satisfy the failure occurrence criteria, does not meet the failure occurrence criteria, and the monitoring target signal is at least a specified ratio. It is distinguished by the inability to receive when it cannot be received, and the failure type is judged by the combination of the distinguished judgment criterion information.

In FIG. 15, the ground station transmission / reception device failure indicates the failure of the transmission / reception device 207 of the ground station 200, and the functional block indicates the failure of the wireless transmission / reception unit 211. The ground station data processing device failure indicates a failure of the data processing device 208 of the ground station 200, and the functional block indicates a failure of either or both of the control unit 212 and the storage unit 214. The ground station wired interface termination circuit failure indicates a failure of the wired interface termination circuit 205 of the ground station 200, and the functional block indicates a failure of the wired transmission / reception unit 213. The on-board station transmission / reception device failure indicates a failure of the transmission / reception device 207 of the on-board station 300, and the functional block indicates a failure of the wireless transmission / reception unit 311. The on-board station data processing device failure indicates a failure of the data processing device 208 of the on-board station 300, and the functional block indicates a failure of either or both of the control unit 312 and the storage unit 314. The on-board station wired interface termination circuit failure indicates a failure of the on-board station 300 wired interface termination circuit 205, and the functional block indicates a failure of the wired transmission / reception unit 313. The ground station radio wave interference indicates that radio wave interference has occurred around the ground station 200. On-board station radio wave interference indicates that radio wave interference has occurred around the on-board station 300. Note that no failure indicates that no failure has occurred in each device of the ground-to-vehicle communication system 600.

The failure type determination unit 115 determines, for example, that the ground station transmitter / receiver failure occurs when the determination criteria information 1 to 3 satisfy the failure occurrence criteria and the determination criteria information 4 to 7 do not meet the failure occurrence criteria. In the failure determination device 100, the control unit 112 outputs the information of the failure type determined by the failure type determination unit 115 to an external device (not shown) via the external output unit 113.

The sequence diagram is mainly described for the operation of the fault determination device 100, the ground station 200-1, the on-board station 300-1, and the on-board superior device 400-1 in the ground-to-vehicle communication system 600. It is assumed that the station 200-2 and the on-board station 300-2 are performing the same operation in parallel. Similarly, the fault determination device 100, the ground station 200-3, 200-4, the on-board station 300-3, 300-4, and the on-board superior device 400-2 also operate in the same manner as in the sequence diagram. It shall be. In the ground-to-vehicle communication system 600, each device periodically operates the sequence diagram.

The operation of each device will be described with reference to a flowchart. FIG. 16 is a flowchart showing the operation of the failure determination device 100 according to the first embodiment. In the failure determination device 100, the control unit 112 determines the determination threshold value of the determination reference information and the failure type determination cycle (step S201). The control unit 112 generates a wired packet including the determination threshold value of the determination reference information and the failure type determination cycle, and sets the determination threshold value of the determination reference information and the failure type determination cycle by the wired packet via the wired transmission / reception unit 111 to the ground station 200. (Step S202). The control unit 112 determines an accumulation cycle, which is a cycle for accumulating the determination reference information 6 (step S203). The control unit 112 generates a health check request for each accumulation cycle, transmits the health check request to the ground station 200, and determines the determination reference information by receiving the health check response from the ground station 200 (step S204). Further, the control unit 112 collects determination reference information from other devices, that is, the ground station 200, the on-board station 300, and the on-board superior device 400 (step S205). In the present embodiment, when there are a plurality of on-board stations 300 mounted on the train formation 500 and the ground station 200 is communicating with the on-board station 300, the control unit 112 has the ground station 200 and the on-board station 300. , And in the train formation 500, control is performed to collect determination reference information from the on-board superior device 400 to which the on-board station 300 is connected. The control unit 112 may change the order of operations of steps S204 and S205, or may perform the operations in parallel. The failure type determination unit 115 determines the failure type that occurs in the ground-to-vehicle communication system 600 by using the accumulated determination reference information (step S206).

FIG. 17 is a flowchart showing the operation of the ground station 200 according to the first embodiment. When the control unit 212 receives the determination threshold value of the determination reference information and the failure type determination cycle from the failure determination device 100 by the wired packet via the wired transmission / reception unit 213 in the ground station 200 (step S301), the determination reference information 2 and 2. The accumulation cycle, which is the cycle in which 5 is accumulated, is determined (step S302). The control unit 212 generates a wireless packet including the determination threshold value of the determination reference information and the failure type determination cycle, and sets the determination threshold value of the determination reference information and the failure type determination cycle by the wireless packet via the wireless transmission / reception unit 211. Notify 300 (step S303). The control unit 212 establishes a communication connection with the on-board station 300 (step S304). The control unit 212 may change the order of operations of steps S303 and S304, or may perform the operations in parallel. The control unit 212 determines a measurement report slot in the wireless frame when transmitting / receiving determination reference information to / from the on-board station 300 (step S305). The control unit 212 determines the determination reference information for each accumulation cycle (step S306). The control unit 212 generates a wired packet including the integrated information, and transmits the determination reference information to the failure determination device 100 by the wired packet via the wired transmission / reception unit 213 (step S307).

Regarding the operation of the on-board station 300, the communication target and the like are different, but since the operation itself is the same as the operation of the ground station 200, the description of the operation using the flowchart is omitted.

FIG. 18 is a flowchart showing the operation of the on-vehicle upper device 400 according to the first embodiment. When the control unit 412 receives the determination threshold value of the determination reference information and the failure type determination cycle from the on-board station 300 by the wired packet via the wired transmission / reception unit 411 in the on-vehicle upper device 400 (step S401), the determination reference information. The accumulation cycle, which is the cycle in which 7 is accumulated, is determined (step S402). The control unit 412 generates a health check request for each integration cycle, sends it to the on-board station 300, and receives a health check response from the on-board station 300 to determine the determination reference information 7 (step S403). The control unit 412 generates a wired packet including the integrated information, and transmits the determination reference information to the failure determination device 100 by the wired packet via the wired transmission / reception unit 411 (step S404).

As described above, according to the present embodiment, in the ground-to-vehicle communication system 600, the failure determination device 100 is a device failure or radio wave based on the determination reference information accumulated by the other devices and the failure determination device 100. It was decided to identify the device in which the communication failure due to interference occurred and the site where the communication failure occurred in the device. As a result, the failure determination device 100 can automatically identify the failure generation device and the failure occurrence site when a failure occurs. It is possible to save labor in analysis work.

The ground-to-vehicle communication system 600 can be applied to platform door control. The platform door control system has a plurality of ground stations 200 at the station, a plurality of on-board stations 300 in the train formation 500, and features on the station where the ground stations 200 are installed at both ends of each platform. It is similar to the ground-vehicle communication system 600 of this embodiment. In the ground-to-vehicle communication system 600, the failure determination device 100 can be expected to improve the determination system and shorten the determination time by collecting a large amount of determination reference information.

Embodiment 2.
In the first embodiment, two on-board stations 300 are mounted on the train formation 500. In the second embodiment, a case where only one on-board station 300 is mounted on the train formation 500 will be described.

FIG. 19 is a diagram showing a configuration example of the ground-to-vehicle communication system 600a according to the second embodiment. As described above, the ground-to-vehicle communication system 600a is different from the ground-to-vehicle communication system 600 of the first embodiment shown in FIG. 1 in that the number of on-board stations 300 mounted on the train formation 500 is one. In the first embodiment, the failure determination device 100 integrates the seven determination reference information 1 to 7 to determine the failure type. In the present embodiment, the failure determination device 100 integrates four determination standard information 1, determination standard information 3, determination standard information 4, and determination standard information 6 to determine the type of failure. That is, when there is only one on-board station 300 mounted on the train formation 500 and the ground station 200 is communicating with the on-board station 300, the control unit 112 of the failure determination device 100 determines from the ground station 200. Controls to collect information. The operation of each device accumulating each determination criterion information is the same as that of the first embodiment. The control unit 112 collects four determination standard information 1, determination standard information 3, determination standard information 4, and determination standard information 6. The failure determination device 100 uses four of the accumulated judgment standard information 1, judgment standard information 3, judgment standard information 4, and judgment standard information 6 in the correspondence table between the failure type and the judgment standard information shown in FIG. Then, the failure type is determined.

Since the failure determination device 100 has less determination reference information that can be used as compared with the first embodiment, among the failure types shown in FIG. 15, the ground station transmission / reception device failure, the ground station data processing device failure, and the ground Determine the failure type from among station wired interface termination circuit failure, ground station radio wave interference, and no failure. That is, the failure type determination unit 115 uniquely determines the failure type from among the ground station transmission / reception device failure, the ground station data processing device failure, the ground station wired interface termination circuit failure, the ground station radio wave interference, and no failure.

As described above, according to the present embodiment, in the ground-to-vehicle communication system 600a, the failure determination device 100 is a device failure or radio wave based on the determination reference information accumulated by the other devices and the failure determination device 100. It was decided to identify the device in which the communication failure due to interference occurred and the site where the communication failure occurred in the device. As in the case of the first embodiment, the failure determination device 100 determines the failure type from the candidates of the few failure types by using less determination criterion information as compared with the first embodiment. It is possible to automatically identify the failure-generating device and the occurrence site at the time, and it is possible to save labor in identifying and analyzing the failure-generating device, which conventionally depended on the work of maintenance personnel, technicians of manufacturers, and the like.

Embodiment 3.
In the third embodiment, the case where the train formation 500 is absent, that is, the case where the on-board station 300 and the on-board superior device 400 are absent will be described.

FIG. 20 is a diagram showing a configuration example of the ground-to-vehicle communication system 600b according to the third embodiment. As described above, the ground-to-vehicle communication system 600b has a system configuration when the on-vehicle station 300 is absent. In the first embodiment, the failure determination device 100 integrates the seven determination reference information 1 to 7 to determine the failure type. In the present embodiment, the failure determination device 100 integrates the determination standard information 3, the determination standard information 4, and the determination standard information 6 to determine the type of failure. That is, when the ground station 200 is in non-communication between ground vehicles, the control unit 112 of the failure determination device 100 controls to collect the determination reference information from the ground station 200. Here, it is assumed that the ground station 200 is in a state of non-communication between ground vehicles due to the absence of the on-vehicle station 300. The operation of each device accumulating each determination criterion information is the same as that of the first embodiment. The control unit 112 collects the determination reference information 3, the determination reference information 4, and the determination reference information 6. The failure determination device 100 uses the accumulated determination standard information 3, the determination standard information 4, and the determination standard information 6 in the correspondence table between the failure type and the determination standard information shown in FIG. 15 to determine the failure type. Make a judgment.

Since the failure determination device 100 has less determination reference information that can be used as compared with the first embodiment, among the failure types shown in FIG. 15, the ground station transmission / reception device failure, the ground station data processing device failure, and the ground Determine the failure type from among station wired interface termination circuit failure, ground station radio wave interference, and no failure. The failure type determination unit 115 uniquely determines the failure type from among the ground station transmission / reception device failure, the ground station data processing device failure, the ground station wired interface termination circuit failure, the ground station radio wave interference, and no failure.

As described above, according to the present embodiment, in the ground-to-vehicle communication system 600b, the failure determination device 100 is a device failure or radio wave based on the determination reference information accumulated by the other devices and the failure determination device 100. It was decided to identify the device in which the communication failure due to interference occurred and the site where the communication failure occurred in the device. As in the case of the first embodiment, the failure determination device 100 determines the failure type from the candidates of the few failure types by using less determination criterion information as compared with the first embodiment. It is possible to automatically identify the failure-generating device and the occurrence site at the time, and it is possible to save labor in identifying and analyzing the failure-generating device, which conventionally depended on the work of maintenance personnel, technicians of manufacturers, and the like.

The configuration shown in the above embodiments is an example, and can be combined with another known technique, can be combined with each other, and does not deviate from the gist. It is also possible to omit or change a part of the configuration.

100 Failure Judgment Device, 101 Ground Station Interface Termination Circuit, 102, 203, 402 Memory, 103, 204, 403 Processor, 104 External Interface Termination Circuit, 105, 206, 404 Power Supply Circuit, 106, 209, 405 Processing Circuit, 111, 213,313,411 Wired transmission / reception unit, 112,212,312,412 Control unit, 113 External output unit, 114,214,314,413 Storage unit, 115 Failure type determination unit, 200,200-1 to 200-4 Ground Station, 201 antenna, 202 wireless interface termination circuit, 205 wired interface termination circuit, 207 transmitter / receiver, 208 data processor, 211,311 wireless transceiver, 300,300-1 to 300-4 on-board station, 400,400- 1 to 400-2 on-board superior device, 401 on-board station interface termination circuit, 500-1 to 500-2 train formation, 600, 600a, 600b ground-to-vehicle communication system.

Claims (14)

In a ground-to-vehicle communication system in which a plurality of ground stations installed on the ground and an on-board station mounted on a train formation can perform ground-to-vehicle communication by wireless communication, a wired transmission / reception unit that performs wired communication with the ground station. ,
A control unit that controls the ground station and a control unit that collects determination reference information that is information on the communication status of the on-board station when the ground station is communicating with the on-board station.
A failure type determination unit that determines a failure type that occurs in the ground-to-vehicle communication system based on the determination criterion information, and a failure type determination unit.
Equipped with
There are a plurality of the on-board stations mounted on the train formation, and the ground station is communicating with the on-board station.
The control unit controls to collect the determination reference information from the ground station, the on-board station, and the on-board superior device to which the on-board station is connected in the train formation.
The failure type determination unit includes a failure of the transmission / reception device of the ground station, a failure of the data processing device of the ground station, a failure of the wired interface termination circuit of the ground station, a failure of the transmission / reception device of the on-board station, and the on-board. The failure type is uniquely determined from among the failure of the data processing device of the station, the failure of the wired interface termination circuit of the on-board station, the radio interference of the ground station, the radio interference of the on-board station, and no failure.
A fault determination device characterized by this. As the determination reference information, the control unit has a radio transmission state of the on-board station monitored by the ground station, a radio transmission state of the ground station monitored by the on-board station, and another ground monitored by the ground station. The radio transmission status of the station, whether or not the received power of the ground station monitored by the ground station is exceeded, whether or not the received power of the on-board station monitored by the on-board station is exceeded, and the communication of the ground station monitored by the failure determination device. Accumulates the state and the communication state of the on-board station monitored by the on-board superior device to which the on-board station is connected in the train formation.
The failure determination device according to claim 1 . In a ground-to-vehicle communication system in which a plurality of ground stations installed on the ground and an on-board station mounted on a train formation can perform ground-to-vehicle communication by wireless communication, a wired transmission / reception unit that performs wired communication with the ground station. ,
A control unit that controls the ground station and a control unit that collects determination reference information that is information on the communication status of the on-board station when the ground station is communicating with the on-board station.
A failure type determination unit that determines a failure type that occurs in the ground-to-vehicle communication system based on the determination criterion information, and a failure type determination unit.
Equipped with
The on-board station mounted on the train formation is one, and the ground station is communicating with the on-board station.
The control unit controls to collect the determination reference information from the ground station.
The failure type determination unit can be selected from among the failure of the transmission / reception device of the ground station, the failure of the data processing device of the ground station, the failure of the wired interface termination circuit of the ground station, the radio wave interference of the ground station, and no failure. Uniquely determine the failure type,
A fault determination device characterized by this. The control unit uses the determination reference information as the wireless transmission state of the on-board station monitored by the ground station, the wireless transmission state of another ground station monitored by the ground station, and the ground station monitored by the ground station. Accumulates the communication status of the ground station monitored by the failure determination device, whether or not the received power is exceeded.
The failure determination device according to claim 3 , wherein the fault determination device is characterized by the above. In a ground-to-vehicle communication system in which a plurality of ground stations installed on the ground and an on-board station mounted on a train formation can perform ground-to-vehicle communication by wireless communication, a wired transmission / reception unit that performs wired communication with the ground station. ,
A control unit that controls the ground station and a control unit that collects determination reference information that is information on the communication status of the on-board station when the ground station is communicating with the on-board station.
A failure type determination unit that determines a failure type that occurs in the ground-to-vehicle communication system based on the determination criterion information, and a failure type determination unit.
Equipped with
When the ground station is not communicating between ground vehicles,
The control unit controls to collect the determination reference information from the ground station.
The failure type determination unit can be selected from among the failure of the transmission / reception device of the ground station, the failure of the data processing device of the ground station, the failure of the wired interface termination circuit of the ground station, the radio wave interference of the ground station, and no failure. Uniquely determine the failure type,
A fault determination device characterized by this. As the determination reference information, the control unit includes the radio transmission state of another ground station monitored by the ground station, the presence or absence of excess received power of the ground station monitored by the ground station, and the ground monitored by the failure determination device. Accumulate the communication status of stations,
The failure determination device according to claim 5 . The failure type determination unit receives the newly accumulated determination criteria information within the failure type determination cycle at a specified rate or more of the signals that meet the failure occurrence criteria, do not meet the failure occurrence criteria, and are monitored. Distinguish according to the inability to receive when not completed, and determine the failure type by the combination of the distinguished criteria information.
The failure determination device according to claim 1 , 3 , or 5 . It is a failure judgment method in the failure judgment device.
The wired transmission / reception unit performs wired communication with the ground station in a ground-vehicle communication system in which a plurality of ground stations installed on the ground and an on-board station mounted on a train formation can perform ground-vehicle communication by wireless communication. The first step to do and
A second step in which the control unit controls to collect the ground station and the determination reference information which is the communication status information of the on-board station when the ground station is communicating with the on-board station.
A third step in which the failure type determination unit determines the failure type that occurs in the ground-to-vehicle communication system based on the determination criterion information, and
Including
There are a plurality of the on-board stations mounted on the train formation, and the ground station is communicating with the on-board station.
In the second step, the control unit controls to collect the determination reference information from the ground station, the on-board station, and the on-board superior device to which the on-board station is connected in the train formation.
In the third step, the failure type determination unit has a failure of the transmission / reception device of the ground station, a failure of the data processing device of the ground station, a failure of the wired interface termination circuit of the ground station, and a failure of the on-board station. Uniquely among device failure, failure of the data processing device of the on-board station, failure of the wired interface termination circuit of the on-board station, radio interference of the ground station, radio interference of the on-board station, and no failure. Determine the failure type,
A failure determination method characterized by this. In the second step, the control unit uses the determination reference information as the radio transmission state of the on-board station monitored by the ground station, the radio transmission state of the ground station monitored by the on-board station, and the ground. The radio transmission status of other ground stations monitored by the station, the reception power excess of the ground station monitored by the ground station, the reception power excess of the on-board station monitored by the on-board station, and the failure determination device. Accumulates the monitored communication status of the ground station and the communication status of the on-board station monitored by the on-board superior device to which the on-board station is connected in the train formation.
The failure determination method according to claim 8 , wherein the method is characterized by the above. It is a failure judgment method in the failure judgment device.
The wired transmission / reception unit performs wired communication with the ground station in a ground-vehicle communication system in which a plurality of ground stations installed on the ground and an on-board station mounted on a train formation can perform ground-vehicle communication by wireless communication. The first step to do and
A second step in which the control unit controls to collect the ground station and the determination reference information which is the communication status information of the on-board station when the ground station is communicating with the on-board station.
A third step in which the failure type determination unit determines the failure type that occurs in the ground-to-vehicle communication system based on the determination criterion information, and
Including
The on-board station mounted on the train formation is one, and the ground station is communicating with the on-board station.
In the second step, the control unit controls to collect the determination reference information from the ground station.
In the third step, the failure type determination unit has a failure of the transmission / reception device of the ground station, a failure of the data processing device of the ground station, a failure of the wired interface termination circuit of the ground station, and a radio wave interference of the ground station. , And uniquely determine the failure type from among no failures,
A failure determination method characterized by this. In the second step, the control unit uses the determination reference information as the wireless transmission state of the on-board station monitored by the ground station, the wireless transmission state of another ground station monitored by the ground station, and the ground. Accumulates the presence or absence of excess received power of the ground station monitored by the station and the communication status of the ground station monitored by the failure determination device.
The failure determination method according to claim 10 , characterized in that. It is a failure judgment method in the failure judgment device.
The wired transmission / reception unit performs wired communication with the ground station in a ground-vehicle communication system in which a plurality of ground stations installed on the ground and an on-board station mounted on a train formation can perform ground-vehicle communication by wireless communication. The first step to do and
A second step in which the control unit controls to collect the ground station and the determination reference information which is the communication status information of the on-board station when the ground station is communicating with the on-board station.
A third step in which the failure type determination unit determines the failure type that occurs in the ground-to-vehicle communication system based on the determination criterion information, and
Including
When the ground station is not communicating between ground vehicles,
In the second step, the control unit controls to collect the determination reference information from the ground station.
In the third step, the failure type determination unit has a failure of the transmission / reception device of the ground station, a failure of the data processing device of the ground station, a failure of the wired interface termination circuit of the ground station, and a radio wave interference of the ground station. , And uniquely determine the failure type from among no failures,
A failure determination method characterized by this. In the second step, the control unit uses the determination reference information as the radio transmission state of another ground station monitored by the ground station, the presence or absence of excess received power of the ground station monitored by the ground station, and the failure. Accumulates the communication status of the ground station monitored by the judgment device.
12. The failure determination method according to claim 12. In the third step, the failure type determination unit uses the newly accumulated determination criteria information within the failure type determination cycle to satisfy the failure occurrence criteria, the failure occurrence criteria not to be satisfied, and the signal to be monitored. Is distinguished by the inability to receive when the signal is not received more than the specified rate, and the failure type is determined by the combination of the distinguished criteria information.
The failure determination method according to claim 8 or 10 or 12 , characterized in that.

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