WO2022118375A1

WO2022118375A1 - Train operation system, train operation method, control circuit, and storage medium

Info

Publication number: WO2022118375A1
Application number: PCT/JP2020/044680
Authority: WO
Inventors: 裕貴井浦; 明▲徳▼ 平; 裕康佐野; 周作梅田
Original assignee: 三菱電機株式会社
Priority date: 2020-12-01
Filing date: 2020-12-01
Publication date: 2022-06-09
Also published as: JPWO2022118375A1; JP7229437B2

Abstract

A train operation system (1) provided with: a UWB wireless tag (10) that is possessed by a train crew and performs ultra-wide-band wireless communication; UWB wireless sensors (20-1, 20-2) that are installed in a train and perform ultra-wide-band wireless communication with the UWB wireless tag (10) to generate distance measurement information (127) indicating distances with the UWB wireless tag (10); an information collection device (30) that generates positioning information (128) indicating a position of the UWB wireless tag (10) using the distance measurement information (127) received from the UWB wireless sensors (20-1, 20-2) and transmits information including the positioning information (128); and an operation control device (60) that generates information for the train crew on the basis of the information including the positioning information (128).

Description

Train operation system, train operation method, control circuit and storage medium

This disclosure relates to a train operation system using the position information of crew members, a train operation method, a control circuit, and a storage medium.

In recent years, a system that uses Bluetooth (registered trademark), GPS (Global Positioning System), etc. to acquire the location information of crew members who have information terminals and streamline operations is being put into practical use. The crew has an information terminal, and information such as GPS position information and camera images is exchanged between the crew and the command room, and technologies, products, services, etc. for streamlining operations are being developed. Patent Document 1 discloses a technique for giving a business instruction related to train operation based on the position information of a mobile terminal of a crew member.

Japanese Unexamined Patent Publication No. 2018-149921

The position information used in the train operation business is the result of position estimation using GPS satellites, and the position estimation accuracy is in the metric class. In addition, the position estimation accuracy depends on the presence or absence of visibility from GPS satellites. Therefore, in reality, the position of the crew can only be grasped in units of areas of about several tens of meters, and there is a problem that detailed and appropriate judgments and instructions cannot be made to the crew based on the position information of the crew. there were. Business efficiency and applications based on the location information of crew members will be limited.

The present disclosure has been made in view of the above, and an object of the present disclosure is to obtain a train operation system capable of train operation with improved position estimation accuracy of crew members.

In order to solve the above-mentioned problems and achieve the object, the train operation system of the present disclosure includes a radio tag possessed by the crew and performing ultra-high band radio communication, and a radio tag and ultra-high band radio installed on the train. Using a plurality of wireless sensors that communicate and generate distance measurement information indicating the distance between the wireless tag and the distance measurement information received from the multiple wireless sensors, positioning information indicating the position of the wireless tag is generated. It is characterized by including an information collecting device for transmitting information including positioning information and an operation management device for generating information for crew members based on the information including positioning information.

The train operation system according to this disclosure has the effect of being able to operate trains with improved accuracy of crew position estimation. Further, the train operation system according to the present disclosure has an effect that the system operation can be continued regardless of whether or not there is a line of sight from GPS satellites.

The figure which shows the configuration example of the train operation system which concerns on Embodiment 1. A sequence diagram showing the operation of each information node of the train operation system according to the first embodiment. A flowchart showing the operation of the UWB (Ultra Wide Band) wireless tag according to the first embodiment. A flowchart showing the operation of the UWB wireless sensor according to the first embodiment. A flowchart showing the operation of the information collecting device according to the first embodiment. A flowchart showing the operation of the operation management device according to the first embodiment. A block diagram showing a configuration example of a UWB wireless tag according to the first embodiment. The figure which shows the structural example of the processing circuit in the case where the processing circuit provided in the UWB wireless tag which concerns on Embodiment 1 is realized by a processor and a memory. The figure which shows the example of the processing circuit in the case where the processing circuit provided in the UWB wireless tag which concerns on Embodiment 1 is configured by the dedicated hardware. The figure which shows the example of the authentication method of the train operation by the crew having a UWB radio tag in the train operation system which concerns on Embodiment 2. The figure which shows the example of the control relation in the case of controlling the timing which performs the distance measurement of the UWB radio tag among the plurality of UWB radio sensors which concerns on Embodiment 5. The figure which shows the example which allocated the time slot by the generated random number by the primary UWB radio sensor which concerns on Embodiment 5. The figure which shows the example which the primary UWB radio sensor which concerns on Embodiment 5 periodically allocates a time slot.

Hereinafter, the train operation system, the train operation method, the control circuit, and the storage medium according to the embodiment of the present disclosure will be described in detail based on the drawings.

Embodiment 1.
FIG. 1 is a diagram showing a configuration example of the train operation system 1 according to the first embodiment. The train operation system 1 is a system that uses the position information of the crew, and is composed of a plurality of communication nodes. Specifically, the train operation system 1 operates with a UWB radio tag 10, UWB radio sensors 20-1, 20-2, an information collecting device 30, an in-train radio slave station 40, and a radio base station 50. A management device 60 is provided. In the following description, when the UWB wireless sensors 20-1 and 20-2 are not distinguished, they may be referred to as the UWB wireless sensor 20. The train operation system 1 includes two UWB wireless sensors 20 in the example of FIG. 1, but may include three or more UWB wireless sensors 20. Assuming that the UWB radio tag 10 is at the lower level and the operation management device 60 is at the upper level on the network of the train operation system 1, each communication node constituting the train operation system 1 is capable of bidirectional communication between the upper node and the lower node. Is. Hereinafter, each communication node will be described in detail.

The UWB wireless tag 10 is a communication node owned by the crew. The UWB wireless tag 10 is a wireless tag that performs ultra-high band wireless communication with the UWB wireless sensor 20 and UWB. The UWB radio tag 10 receives the preamble signal 119, the train operation information 125, and the instruction information 126 from the UWB radio sensor 20. The UWB radio tag 10 analyzes the preamble signal 119, which is a distance measuring radio signal transmitted from the UWB radio sensor 20, and calculates the reception time of the radio wave in space, that is, the preamble signal 119. The UWB radio tag 10 notifies the information terminal held by the crew member of the train operation information 125 and the instruction information 126 transmitted from the operation management device 60 to the crew member. The train operation information 125 is notification information related to train operation. The instruction information 126 is information indicating an instruction directed to a specific crew member who has the UWB radio tag 10. The signal sequence of the preamble signal 119 transmitted by the UWB wireless sensor 20 differs depending on the device-specific ID (IDentification) of the UWB wireless sensor 20. In the following description, the preamble signal 119 may be referred to as a first preamble signal.

Further, the UWB wireless tag 10 transmits the preamble signal 120, the tag ID 121 of the UWB wireless tag 10, the terminal information 122, and the timing information 129 to the UWB wireless sensor 20 according to the instruction from the UWB wireless sensor 20. The tag ID 121 of the UWB wireless tag 10 is an ID unique to the device of the UWB wireless tag 10 or an ID unique to the crew holding the UWB wireless tag 10, that is, tag identification information. The tag ID 121 of the UWB wireless tag 10 may be an ID unique to the device of the UWB wireless tag 10 and unique to the crew holding the UWB wireless tag 10. The terminal information 122 is information about an information device, such as information automatically acquired by an information device in which the UWB wireless tag 10 is incorporated, and information generated by a crew member operating the information device. The timing information 129 is information including the transmission time of the preamble signal 120 transmitted by the UWB radio tag 10 and the reception time of the preamble signal 119 from the UWB radio sensor 20. The UWB wireless tag 10 may transmit the preamble signal 120 by sequential instructions from the UWB wireless sensor 20, or may send the preamble signal 120 to the UWB wireless tag 10 by the UWB wireless sensor 20 without depending on the sequential instructions from the UWB wireless sensor 20. The preamble signal 120 may be transmitted periodically according to the initial setting of. The signal sequence of the preamble signal 120 transmitted by the UWB radio tag 10 differs depending on the device-specific ID of the UWB radio tag 10 or the crew-specific ID of the UWB radio tag 10. In the following description, the preamble signal 120 may be referred to as a second preamble signal.

The UWB wireless sensor 20 is a communication node installed on a train (not shown). The UWB wireless sensor 20 is a wireless sensor that performs ultra-high band wireless communication with the UWB wireless tag 10 and UWB. The UWB radio sensor 20 receives the preamble signal 120, the tag ID 121, the terminal information 122, and the timing information 129 from the UWB radio tag 10. The UWB radio sensor 20 analyzes the preamble signal 120 transmitted from the UWB radio tag 10 and calculates the reception time of radio waves in space. The UWB wireless sensor 20 calculates the distance between the UWB wireless tag 10 and the UWB wireless sensor 20 by using the transmission time information of the preamble signal 119 of the UWB wireless sensor 20 and the timing information 129 from the UWB wireless tag 10. Then, the distance measurement information 127 is generated. The UWB wireless sensor 20 transmits the generated ranging information 127, the tag ID 121 received from the UWB wireless tag 10, and the terminal information 122 to the information collecting device 30.

Further, the UWB radio sensor 20 receives the train operation information 125 and the instruction information 126 from the information collecting device 30. The UWB radio sensor 20 transmits the preamble signal 119, which is a distance measuring radio signal, the train operation information 125 received from the information collecting device 30, and the instruction information 126 to the UWB radio tag 10.

The information collecting device 30 is a communication node installed on a train (not shown). The information collecting device 30 collects and aggregates information from a plurality of UWB wireless sensors 20, and also distributes the information to the plurality of UWB wireless sensors 20. The information collecting device 30 receives the ranging information 127, the tag ID 121, and the terminal information 122 from the plurality of UWB wireless sensors 20. The information collecting device 30 uses the ranging information 127 received from the plurality of UWB wireless sensors 20 to generate positioning information 128 indicating the position of the UWB wireless tag 10. The information collecting device 30 identifies a vehicle in which the UWB radio tag 10 exists by using, for example, a train ID, a vehicle ID, or the like, and further, the UWB radio tag 10 is based on Cartesian coordinates originating from a specific position in the vehicle. Positioning information 128 indicating the position of is generated. The train ID is identification information for identifying a train (not shown). The vehicle ID is identification information for identifying each vehicle forming a train. The information collecting device 30 transmits the generated positioning information 128, the tag ID 121 received from the plurality of UWB radio sensors 20, and the terminal information 122 to the in-train radio slave station 40 which is a higher-level communication node.

Further, the information collecting device 30 receives the train operation information 125 and the instruction information 126 from the in-train radio slave station 40 which is a higher-level communication node. The information collecting device 30 transmits the train operation information 125 and the instruction information 126 received from the in-train radio slave station 40 to the UWB radio sensor 20.

The in-train radio slave station 40 is a communication node installed in a train (not shown). The in-train radio slave station 40 transmits the information generated by the information collecting device 30 to a communication device outside the train. Specifically, the in-train radio slave station 40 receives the positioning information 128, the tag ID 121, and the terminal information 122 from the information collecting device 30. The in-train radio slave station 40 transmits the positioning information 128, the tag ID 121, and the terminal information 122 received from the information collecting device 30 to the radio base station 50. Further, the in-train radio slave station 40 receives train operation information 125 and instruction information 126 from the radio base station 50. The in-train radio slave station 40 transmits the train operation information 125 and the instruction information 126 received from the radio base station 50 to the information collecting device 30.

The radio base station 50 is a communication node installed on the ground. The radio base station 50 transmits information from the in-train radio slave station 40 to the operation management device 60. Specifically, the radio base station 50 receives the positioning information 128, the tag ID 121, and the terminal information 122 from the in-train radio slave station 40. The radio base station 50 transmits the positioning information 128, the tag ID 121, and the terminal information 122 received from the in-train radio slave station 40 to the operation management device 60. Further, the radio base station 50 receives the train operation information 125 and the instruction information 126 from the operation management device 60. The radio base station 50 transmits the train operation information 125 and the instruction information 126 received from the operation management device 60 to the in-train radio slave station 40.

The operation management device 60 is a communication node installed in a command room or the like (not shown) on the ground. The operation management device 60 receives information from the radio base station 50 and gives information, authentication, and the like to the crew based on the received information. Specifically, the operation management device 60 receives the positioning information 128, the tag ID 121, and the terminal information 122 from the radio base station 50. The operation management device 60 generates train operation information 125 and instruction information 126 to be transmitted to the crew based on the received positioning information 128, tag ID 121, and terminal information 122. The operation management device 60 transmits the generated train operation information 125 and instruction information 126 to the radio base station 50.

In the train operation system 1, the operation management device 60 generates and distributes the train operation information 125 and the instruction information 126 to the UWB radio tag 10 based on the positioning information 128 indicating the position of the UWB radio tag 10 and the tag ID 121. The operation of information transmission up to is described. FIG. 2 is a sequence diagram showing the operation of each information node of the train operation system 1 according to the first embodiment.

The UWB radio tag 10 transmits the preamble signal 120 and the tag ID 121 to the UWB radio sensor 20-1 (step S101). The UWB radio sensor 20-1 transmits the preamble signal 119 to the UWB radio tag 10 (step S102). The UWB radio tag 10 transmits the preamble signal 120 and the timing information 129 to the UWB radio sensor 20-1 (step S103). The timing information 129 includes the time when the UWB radio tag 10 transmits the preamble signal 120 in steps S101 and S103, and the time when the UWB radio tag 10 receives the preamble signal 119 from the UWB radio sensor 20-1 in step S102. It has been.

Similarly, the UWB radio tag 10 transmits the preamble signal 120 and the tag ID 121 to the UWB radio sensor 20-2 (step S104). The UWB radio sensor 20-2 transmits the preamble signal 119 to the UWB radio tag 10 (step S105). The UWB radio tag 10 transmits the preamble signal 120 and the timing information 129 to the UWB radio sensor 20-2 (step S106). The timing information 129 includes the time when the UWB radio tag 10 transmits the preamble signal 120 in steps S104 and S106, and the time when the UWB radio tag 10 receives the preamble signal 119 from the UWB radio sensor 20-2 in step S105. It has been.

FIG. 3 is a flowchart showing the operation of the UWB wireless tag 10 according to the first embodiment. The UWB radio tag 10 transmits a preamble signal 120, that is, a second preamble signal, and a tag ID 121 to the UWB radio sensor 20 (step S201). The UWB radio tag 10 receives the preamble signal 119, that is, the first preamble signal from the UWB radio sensor 20 (step S202). The UWB radio tag 10 generates timing information 129 (step S203) and transmits it to the UWB radio sensor 20 (step S204).

Returning to the description of FIG. 2, the UWB radio sensor 20-1 receives the preamble signal 120 transmitted from the UWB radio tag 10 in steps S101 and S103, and the preamble signal 119 to the UWB radio tag 10 in step S102. The distance between the UWB radio tag 10 and the UWB radio sensor 20-1 is calculated using the time when the UWB radio tag 10 is transmitted and the timing information 129 received from the UWB radio tag 10, and the distance measurement information 127 is generated. The UWB wireless sensor 20-1 transmits the generated ranging information 127 and the tag ID 121 received from the UWB wireless tag 10 to the information collecting device 30 (step S107).

Similarly, the UWB radio sensor 20-2 has a time when the preamble signal 120 transmitted from the UWB radio tag 10 in steps S104 and S106 is received and a time when the preamble signal 119 is transmitted to the UWB radio tag 10 in step S105. , The timing information 129 received from the UWB radio tag 10 is used to calculate the distance between the UWB radio tag 10 and the UWB radio sensor 20-2, and the distance measurement information 127 is generated. The UWB wireless sensor 20-2 transmits the generated ranging information 127 and the tag ID 121 received from the UWB wireless tag 10 to the information collecting device 30 (step S108).

FIG. 4 is a flowchart showing the operation of the UWB wireless sensor 20 according to the first embodiment. The UWB radio sensor 20 receives the preamble signal 120, that is, the second preamble signal, and the tag ID 121 from the UWB radio tag 10 (step S301). The UWB radio sensor 20 transmits a preamble signal 119, that is, a first preamble signal to the UWB radio tag 10 (step S302). The UWB radio sensor 20 receives timing information 129 from the UWB radio tag 10 (step S303), and generates distance measurement information 127 using the reception time of the preamble signal 120, the transmission time of the preamble signal 119, and the timing information 129. (Step S304). The UWB wireless sensor 20 transmits the ranging information 127 and the tag ID 121 to the information collecting device 30 (step S305).

Returning to the description of FIG. 2, the information collecting device 30 obtains the positioning information 128 based on the distance measurement information 127 received from the two or more UWB wireless sensors 20, here the UWB wireless sensors 20-1 and 20-2. Generate. The information collecting device 30 transmits the generated positioning information 128 and the tag ID 121 received from the UWB radio sensors 20-1 and 20-2 to the in-train radio slave station 40 (step S109).

FIG. 5 is a flowchart showing the operation of the information collecting device 30 according to the first embodiment. The information collecting device 30 receives the ranging information 127 and the tag ID 121 from the UWB wireless sensor 20 (step S401). The information collecting device 30 generates the positioning information 128 based on the distance measurement information 127 (step S402). The information collecting device 30 transmits the positioning information 128 and the tag ID 121 to the in-train radio slave station 40 (step S403).

Returning to the explanation of FIG. 2, the in-train radio slave station 40 receives the positioning information 128 and the tag ID 121 from the information collecting device 30. The in-train radio slave station 40 transmits the positioning information 128 and the tag ID 121 received from the information collecting device 30 to the radio base station 50 (step S110).

The radio base station 50 receives the positioning information 128 and the tag ID 121 from the in-train radio slave station 40. The radio base station 50 transmits the positioning information 128 and the tag ID 121 received from the in-train radio slave station 40 to the operation management device 60 (step S111).

The operation management device 60 receives the positioning information 128 and the tag ID 121 from the radio base station 50. The operation management device 60 generates train operation information 125 and instruction information 126 based on the received positioning information 128 and tag ID 121. The operation management device 60 transmits the generated train operation information 125 and instruction information 126 to the radio base station 50 (step S112).

FIG. 6 is a flowchart showing the operation of the operation management device 60 according to the first embodiment. The operation management device 60 receives the positioning information 128 and the tag ID 121 from the radio base station 50 (step S501). The operation management device 60 generates train operation information 125 and instruction information 126 based on the positioning information 128 and the tag ID 121 (step S502). The operation management device 60 transmits the train operation information 125 and the instruction information 126 to the radio base station 50 (step S503).

Returning to the description of FIG. 2, the radio base station 50 receives the train operation information 125 and the instruction information 126 from the operation management device 60. The radio base station 50 transmits the train operation information 125 and the instruction information 126 received from the operation management device 60 to the in-train radio slave station 40 (step S113).

The in-train radio slave station 40 receives train operation information 125 and instruction information 126 from the radio base station 50. The in-train radio slave station 40 transmits the train operation information 125 and the instruction information 126 received from the radio base station 50 to the information collecting device 30 (step S114).

The information collecting device 30 receives the train operation information 125 and the instruction information 126 from the in-train radio slave station 40. The information collecting device 30 transmits the train operation information 125 and the instruction information 126 received from the in-train radio slave station 40 to the UWB radio sensors 20-1 and 20-2 (steps S115 and S116).

The UWB radio sensor 20-1 receives train operation information 125 and instruction information 126 from the information collecting device 30. The UWB radio sensor 20-1 transmits the train operation information 125 and the instruction information 126 received from the information collecting device 30 to the UWB radio tag 10 (step S117). Similarly, the UWB radio sensor 20-2 receives the train operation information 125 and the instruction information 126 from the information collecting device 30. The UWB radio sensor 20-2 transmits the train operation information 125 and the instruction information 126 received from the information collecting device 30 to the UWB radio tag 10 (step S118).

An individual application is to transmit the positioning information 128 to the operation management device 60 using the train operation system 1 and to distribute the train operation information 125 and the instruction information 126 to the UWB radio tag 10 based on the positioning information 128. It is also possible to apply to. Additional information collected by the UWB radio tag 10, for example, image data taken by the crew when the UWB radio tag 10 is mounted on the smartphone, acceleration information detected by the UWB radio tag 10, and input by the crew. When it is necessary to transmit text data or the like to the operation management device 60, the UWB wireless tag 10 transmits the terminal information 122 to the UWB wireless sensor 20. The UWB radio sensor 20, the higher-level information collecting device 30, the in-train radio slave station 40, and the radio base station 50 transfer the terminal information 122. As a result, the operation management device 60 can receive the terminal information 122.

The configuration of the communication node included in the train operation system 1 will be described. Since each communication node included in the train operation system 1 has the same configuration, the UWB radio tag 10 will be described as an example. FIG. 7 is a block diagram showing a configuration example of the UWB wireless tag 10 according to the first embodiment. The UWB wireless tag 10 includes a communication unit 11, a storage unit 12, and a control unit 13. The communication unit 11 communicates with the UWB wireless sensor 20 and the information terminal held by the crew. The communication unit 11 may include an antenna or the like. The storage unit 12 stores information acquired from the UWB wireless sensor 20 and the information terminal held by the crew. The control unit 13 analyzes the preamble signal 119 transmitted from the UWB wireless sensor 20 and performs processing such as calculating the reception time of radio waves in space.

The same applies to the UWB wireless sensor 20, the information collecting device 30, the operation management device 60, and the like. The communication unit 11 communicates with another communication node. The storage unit 12 stores information or the like acquired from another communication node. The control unit 13 generates distance measurement information 127 in the case of the UWB wireless sensor 20, positioning information 128 in the case of the information collecting device 30, and train operation information in the case of the operation management device 60. Generate 125 and instruction information 126.

Next, the hardware configuration of the communication node included in the train operation system 1 will be described. As described above, since each communication node included in the train operation system 1 has the same configuration, the UWB radio tag 10 will be described as an example. In the UWB wireless tag 10, the communication unit 11 is realized by a communication device. The storage unit 12 is a memory. The control unit 13 is realized by a processing circuit. The processing circuit may be a processor and memory for executing a program stored in the memory, or may be dedicated hardware. The processing circuit is also called a control circuit.

FIG. 8 is a diagram showing a configuration example of the processing circuit 90 when the processing circuit included in the UWB wireless tag 10 according to the first embodiment is realized by the processor 91 and the memory 92. The processing circuit 90 shown in FIG. 8 is a control circuit and includes a processor 91 and a memory 92. When the processing circuit 90 is composed of the processor 91 and the memory 92, each function of the processing circuit 90 is realized by software, firmware, or a combination of software and firmware. The software or firmware is written as a program and stored in the memory 92. In the processing circuit 90, each function is realized by the processor 91 reading and executing the program stored in the memory 92. That is, the processing circuit 90 includes a memory 92 for storing a program in which the processing of the UWB wireless tag 10 is eventually executed. It can be said that this program is a program for causing the UWB wireless tag 10 to execute each function realized by the processing circuit 90. This program may be provided by a storage medium in which the program is stored, or may be provided by other means such as a communication medium.

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

FIG. 9 is a diagram showing an example of a processing circuit 93 in the case where the processing circuit included in the UWB wireless tag 10 according to the first embodiment is configured by dedicated hardware. The processing circuit 93 shown in FIG. 9 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. As for the processing circuit, a part may be realized by dedicated hardware and a part may be realized by software or firmware. As described above, the processing circuit can realize each of the above-mentioned functions by the dedicated hardware, software, firmware, or a combination thereof.

As described above, according to the present embodiment, in the train operation system 1, the UWB radio tag 10 and the UWB radio sensor 20 can perform centimeter-class position estimation by communicating with the UWB radio. .. Unlike GPS satellites, UWB radio enables position estimation and data transmission with a single device. The UWB wireless sensor 20 generates ranging information 127 indicating the distance between the UWB wireless sensor 20 and the UWB wireless tag 10, and the information collecting device 30 is based on the ranging information 127 acquired from the plurality of UWB wireless sensors 20. , The positioning information 128 indicating the position of the UWB radio tag 10 is generated, and the operation management device 60 generates the train operation information 125 and the instruction information 126 by using the positioning information 128. As a result, the train operation system 1 can perform train operation with improved estimation accuracy of the position of the UWB radio tag 10 possessed by the crew, that is, the position of the crew. Further, since the train operation system 1 can transmit the train operation information 125 and the instruction information 126 from the operation management device 60 to the UWB radio tag 10 in real time, both high-precision positioning and data transmission can be achieved. It is possible to create a system that contributes to operational efficiency using UWB radio.

Embodiment 2.
In the second embodiment, the case where the train operation system 1 described in the first embodiment authenticates the train operation by the crew member having the UWB radio tag 10 will be described.

In the second embodiment, the configuration of the train operation system 1 is the same as that of the first embodiment shown in FIG. Specifically, two authentication methods will be described as an authentication method for train operation by a crew member having a UWB radio tag 10 in the train operation system 1.

FIG. 10 is a diagram showing an example of a train operation authentication method by a crew member having a UWB radio tag 10 in the train operation system 1 according to the second embodiment. FIG. 10 shows an example of the first authentication method. The first authentication method is a method using an authentication code 110 from the train cab 70, a crew member's positioning information 128, and a tag ID 121. The cab 70 is mounted on the train and wirelessly transmits the authentication code 110 with low transmission power. The UWB radio tag 10 owned by the crew needs to be located in the vicinity of the cab 70 in the train in order to correctly receive the authentication code 110 transmitted from the cab 70.

Further, in order to operate the driver's cab 70, the crew member needs to transmit the authentication information 111 for permitting the operation from the possessed UWB wireless tag 10 to the driver's cab 70. The authentication information 111 is information issued by the operation management device 60. In order to issue the authentication information 111, the train operation system 1 needs to transmit the positioning information 128 and the tag ID 121 to the operation management device 60 together with the authentication code 110 received from the driver's cab 70. The reason why the positioning information 128 is required is to confirm whether or not the UWB radio tag 10, that is, the crew member having the UWB radio tag 10 is present at an appropriate position. A suitable position is, for example, in a train. When the position of the UWB radio tag 10 indicated by the positioning information 128, that is, the crew member having the UWB radio tag 10 is outside the train, the operation management device 60 does not issue the authentication information 111 to the driver's cab 70.

The reason why the tag ID 121 is required for the authentication for the operation of the cab 70 for the crew is that the authentication is not given to the crew who are not qualified to operate the cab 70. The administrator of the train operation system 1 or the like pre-registers the tag ID 121 that can be authenticated in the operation management device 60. The operation management device 60 does not issue the authentication information 111 to the UWB wireless tag 10 having the tag ID 121 other than the registered tag ID 121. As described above, in the train operation system 1, the operation management device 60 requires all of the authentication code 110, the positioning information 128, and the tag ID 121 when issuing the authentication information 111. This has the effect that the driver's cab 70 cannot be operated unless a crew member who is qualified to operate the driver's cab 70 is located in the vicinity of the driver's cab 70 and is in a state where the driving operation can be performed.

That is, in the first authentication method, the UWB wireless tag 10 receives the authentication code 110 from the train cab 70, and sends the received authentication code 110 and the above-mentioned tag ID 121 to the operation management device 60 as the destination of the UWB. It transmits to the wireless sensor 20. The operation management device 60 issues authentication information 111 for the driver's cab 70 based on the authentication code 110, positioning information 128, and tag ID 121 received from the radio base station 50, and uses the issued authentication information 111 as the UWB wireless tag 10. Is transmitted to the radio base station 50 as the destination.

The second authentication method is a method that does not use the authentication code 110 from the driver's cab 70. For example, when the positioning accuracy of the positioning information 128 is high, the authentication code 110 may not be required. In this case, the operation management device 60 issues the authentication information 111 using only the positioning information 128 and the tag ID 121, and transmits the authentication information 111 to the driver's cab 70.

That is, in the second authentication method, the UWB wireless tag 10 transmits the above-mentioned tag ID 121 to the UWB wireless sensor 20 with the operation management device 60 as the destination. The operation management device 60 issues authentication information 111 for the driver's cab 70 based on the positioning information 128 received from the radio base station 50 and the tag ID 121, and the issued authentication information 111 is addressed to the UWB radio tag 10. It transmits to the radio base station 50.

Both of the above two authentication methods authenticate the operation of the driver's cab 70 to the crew via the UWB wireless tag 10, but are not limited to these. For example, operation permission may be authenticated from the operation management device 60 to the driver's cab 70 via CBTC (Communications Based Train Control) radio.

As described above, according to the present embodiment, in the train operation system 1, the operation management device 60 is performed by the crew using the positioning information 128 and the tag ID 121, which are the position information of the crew having the UWB radio tag 10. The operation of the train cab 70 can be authenticated.

Embodiment 3.
In the first embodiment, regarding the train operation system 1, the installation position of the UWB radio sensor 20, the setting of the directivity of the antenna included in the UWB radio sensor 20 (not shown), and the like are not particularly mentioned.

For example, in the train operation system 1, the UWB radio sensor 20 may be installed inside the train vehicle and at a position where the outside of the train or the outside of the train can be seen. At this time, for the UWB radio sensor 20 installed at a position where the outside of the vehicle or the outside of the train can be seen, the directivity of the antenna is adjusted to reduce the antenna gain toward the inside of the train and increase the antenna gain toward the outside of the train. .. That is, the antenna of the UWB radio sensor 20 is adjusted so that the antenna gain in the direction outside the train is larger than the antenna gain in the direction inside the train. The UWB radio tag 10 possessed by the crew can communicate with the UWB radio sensor 20 installed outside the vehicle when it is outside the vehicle, and with the UWB radio sensor 20 installed outside the vehicle when it is inside the vehicle. Communication becomes impossible. As a result, in the train operation system 1, the accuracy of the UWB radio tag 10 possessed by the crew member, that is, the crew member's determination of whether the train is inside or outside the train is improved.

Regarding the installation position of the UWB radio sensor 20, the train operation system 1 does not install the main body of the UWB radio sensor 20 in a position where the outside of the vehicle or the outside of the train can be seen, and only the antenna provided in the UWB radio sensor 20 is outside the vehicle or the train. It may be installed in a position where the outside can be seen.

Here, the single UWB wireless sensor 20 can only measure the distance from the UWB wireless tag 10. Therefore, the information collecting device 30 or the operation management device 60 determines whether the crew is outside the train or inside the train.

As described above, according to the present embodiment, in the train operation system 1, the antenna of the UWB radio sensor 20 or the UWB radio sensor 20 is installed at a position where the outside of the vehicle or the outside of the train can be seen, so that the UWB radio tag is installed. Using the positioning information 128 of 10, it is possible to determine whether the crew member having the UWB radio tag 10, that is, the UWB radio tag 10 is inside or outside the train.

Embodiment 4.
In the first embodiment, the information collecting device 30 generates positioning information 128 indicating the position of the UWB radio tag 10 based on the distance measurement information 127 received from the plurality of UWB radio sensors 20. At this time, the information collecting device 30 may generate the positioning information 128 after averaging the plurality of distance measurement information 127, or may average the generated plurality of positioning information 128. As a result, the information collecting device 30 can improve the accuracy of the positioning information 128 transmitted to the in-train radio slave station 40. Further, the information collecting device 30 can reduce the communication traffic to the operation management device 60.

Further, the operation management device 60 may average a plurality of positioning information 128 received from the radio base station 50. As a result, the operation management device 60 can improve the accuracy of the position of the UWB wireless tag 10 when grasping the position of the UWB wireless tag 10.

Embodiment 5.
In the fifth embodiment, a case where the timing of performing distance measurement of the UWB radio tag 10 among the plurality of UWB radio sensors 20, that is, the timing of transmitting the preamble signal 119 and the timing of receiving the preamble signal 120 will be described.

In the train operation system 1, when a plurality of UWB radio sensors 20 installed are asynchronous, each UWB radio sensor 20 independently measures the distance of the UWB radio tag 10 by CSMA / CA (Carrier Sense Multiple Access / Collision Avoidance). I can think of a way to do this. However, when it is necessary to secure the acquisition frequency of the positioning information 128, the control by CSMA / CA is inappropriate. Therefore, it is necessary to collectively control the operation of the plurality of UWB wireless sensors 20. FIG. 11 is a diagram showing an example of a control relationship in the case of controlling the timing of performing distance measurement of the UWB radio tag 10 among the plurality of UWB radio sensors 20 according to the fifth embodiment. In the example of FIG. 11, one of the plurality of UWB wireless sensors 20 is the primary UWB wireless sensor 20a, and the other UWB wireless sensors 20 are the secondary UWB wireless sensors 20b-1 and 20b-2. The secondary UWB radio sensors 20b-1 and 20b-2 operate, that is, measure the distance of the UWB radio tag 10 based on the instruction from the primary UWB radio sensor 20a. In the following description, when the secondary UWB wireless sensors 20b-1 and 20b-2 are not distinguished, they are referred to as secondary UWB wireless sensors 20b. When the primary UWB wireless sensor 20a and the secondary UWB wireless sensor 20b are not distinguished, they are referred to as the UWB wireless sensor 20. The primary UWB radio sensor 20a may be simply referred to as a primer radio sensor, and the secondary UWB radio sensor 20b may be simply referred to as a second radio sensor.

As one example of controlling the timing of performing distance measurement of the UWB wireless tag 10 among a plurality of UWB wireless sensors 20, there is control by time slot hopping. Hereinafter, time slot hopping will be described. The plurality of secondary UWB radio sensors 20b synchronize with the time information of the primary UWB radio sensor 20a. The primary UWB radio sensor 20a schedules the secondary UWB radio sensor 20b according to the individually generated random numbers of each UWB radio sensor 20, the time slot timing set periodically at regular time intervals, and the like, that is, distance measurement. Allocate opportunities slots. The primary UWB radio sensor 20a may have equal opportunities for slot allocation for all secondary UWB radio sensors 20b, or may be a specific secondary UWB radio depending on the location of the UWB radio tag 10, other circumstances, and the like. The allocation opportunity of the sensor 20b may be increased or decreased.

FIG. 12 is a diagram showing an example in which the primary UWB wireless sensor 20a according to the fifth embodiment allocates a time slot by a generated random number. FIG. 12 shows an example in which time slots are assigned to a total of three UWB wireless sensors 20 of UWB wireless sensors 20-1, 20-2, and 20-3 according to generated random numbers. FIG. 13 is a diagram showing an example in which the primary UWB radio sensor 20a according to the fifth embodiment periodically allocates time slots. FIG. 13 is an example in which time slots are assigned at intervals of 5 slots to a total of 3 UWB wireless sensors 20 of UWB wireless sensors 20-1, 20-2, and 20-3.

The examples of FIGS. 12 and 13 are pre-scheduled by the primary UWB radio sensor 20a. After being scheduled once by the primary UWB radio sensor 20a, each secondary UWB radio sensor 20b operates autonomously over a period of time. On the other hand, there is also a method in which the secondary UWB wireless sensor 20b operates based on the sequential instruction from the primary UWB wireless sensor 20a. In this case, the secondary UWB radio sensor 20b does not necessarily have to be time-synchronized with the primary UWB radio sensor 20a.

Further, FIGS. 12 and 13 show an example of time slot hopping, but in addition to this, when a plurality of frequency channels are available, the train operation system 1 channel hopping by a method similar to time slot hopping. May be carried out. Unlike the case of time slot hopping, the train operation system 1 performs random numbers generated individually for the UWB radio sensor 20 and scheduling of channel timings periodically set at regular channel intervals in channel hopping. The train operation system 1 may schedule the time slot hopping and the channel hopping by dividing the time-frequency two-dimensional region into slots. In this way, the primary UWB radio sensor 20a controls the time and frequency radio resources when the secondary UWB radio sensor 20b transmits a signal to the UWB radio tag 10.

Although the case where the primary UWB wireless sensor 20a has a control function for the secondary UWB wireless sensor 20b has been described, the information collecting device 30 may have these control functions. In this case, there is no distinction between the primary UWB wireless sensor 20a and the secondary UWB wireless sensor 20b. That is, the UWB wireless sensor 20 synchronizes with the time information of the information collecting device 30. The information collecting device 30 controls radio resources when the UWB radio sensor 20 transmits a signal to the UWB radio tag 10.

As described above, according to the present embodiment, in order for the plurality of UWB wireless sensors 20 to acquire the positioning information 128 at high frequency in the train operation system 1, the UWB wireless sensors 20 avoid wireless access collisions. is required. Therefore, of the plurality of UWB wireless sensors 20, one is the primary UWB wireless sensor 20a, the other is the secondary UWB wireless sensor 20b, and the primary UWB wireless sensor 20a controls the wireless access of the secondary UWB wireless sensor 20b. As a result, the train operation system 1 can avoid communication collisions between the UWB radio sensors 20.

Embodiment 6.
In the first embodiment, in the train operation system 1, the information collecting device 30 and the in-train radio slave station 40 are set as different communication nodes. However, the functions of the information collecting device 30 and the in-train radio slave station 40 may be integrated into one communication node. Further, the communication nodes may be aggregated as a device having the function of the primary UWB wireless sensor 20a.

Embodiment 7.
When the primary UWB radio sensor 20a manages the secondary UWB radio sensor 20b as in the fifth embodiment, the allocation opportunity of the specific secondary UWB radio sensor 20b is increased or decreased depending on the position of the UWB radio tag 10 and other situations. Can be considered. For example, when the secondary UWB radio sensor 20b recognizes the gesture of the UWB radio tag 10, high-frequency distance measurement is required. In this case, the primary UWB radio sensor 20a does not allocate distance measurement opportunities to all secondary UWB radio sensors 20b, but increases the number of distance measurement allocations to the secondary UWB radio sensors 20b around the UWB radio tag 10 for which gesture recognition is desired. Control to make it.

That is, in the example of the fifth embodiment, the primary UWB radio sensor 20a increases or decreases the radio resource for the specific secondary UWB radio sensor 20b based on the position of the UWB radio tag 10, the operation mode, and the like. When the information collecting device 30 has a control function of the primary UWB radio sensor 20a, the information collecting device 30 is a radio resource for a specific UWB radio sensor 20 based on the position of the UWB radio tag 10, the operation mode, and the like. Increase or decrease.

As described above, according to the present embodiment, the train operation system 1 has a specific UWB radio from a specific secondary UWB radio sensor 20b based on a situation such as a position of a specific UWB radio tag 10 and an operation mode. Increases the chance of allocating transmission of the preamble signal 120 to tag 10. As a result, the train operation system 1 can track the position of the UWB radio tag 10 by shortening the acquisition interval of the position of the UWB radio tag 10.

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.

1 train operation system, 10 UWB radio tag, 11 communication unit, 12 storage unit, 13 control unit, 20-1, 20-2 UWB radio sensor, 20a primary UWB radio sensor, 20b-1, 20b-2 secondary UWB radio sensor , 30 information gathering device, 40 in-train radio slave station, 50 radio base station, 60 operation management device, 70 cab.

Claims

A wireless tag owned by the crew for ultra-high band wireless communication,
A plurality of wireless sensors installed on a train, performing ultra-high band wireless communication with the wireless tag, and generating distance measurement information indicating the distance between the wireless tag and the wireless tag.
An information collecting device that uses the distance measurement information received from the plurality of wireless sensors to generate positioning information indicating the position of the wireless tag and transmits information including the positioning information.
An operation management device that generates information for the crew based on the information including the positioning information, and
A train operation system characterized by being equipped with.
The wireless tag is
The first preamble signal transmitted from the plurality of wireless sensors is analyzed to calculate the reception time of the radio wave in space, and the second preamble signal and the tag of the wireless tag are instructed by the plurality of wireless sensors. The identification information, the terminal information about the information device in which the wireless tag is incorporated, and the timing information including the transmission time and the reception time of the second preamble signal are transmitted to the plurality of wireless sensors.
Train operation information and instruction information, which are information for the crew member transmitted from the operation management device to the crew member, are received from the plurality of wireless sensors and notified to the information terminal held by the crew member.
The train operation system according to claim 1, wherein the train operation system is characterized in that.
The wireless sensor that transmits the first preamble signal is
From the radio tag, a second preamble signal, tag identification information of the radio tag, terminal information about an information device in which the radio tag is incorporated, a transmission time of the second preamble signal, and the first preamble signal. The timing information including the reception time of the preamble signal is received, the second preamble signal is analyzed to calculate the reception time of the radio wave in space, and the transmission time information of the first preamble signal and the timing information are used. The distance between the radio tag and the radio sensor is calculated using the above to generate the distance measurement information, and the distance measurement information, the tag identification information, and the terminal information are transmitted to the information collecting device.
Receives train operation information and instruction information transmitted from the information collecting device to the crew, and transmits the first preamble signal, the train operation information, and the instruction information to the radio tag. ,
The train operation system according to claim 1 or 2, wherein the train operation system is characterized in that.
The information collecting device is
The distance measurement information, the tag identification information of the wireless tag, and the terminal information about the information device in which the wireless tag is incorporated are received from the plurality of wireless sensors, and the positioning information is generated using the distance measurement information. Then, the positioning information, the tag identification information, and the terminal information are transmitted to a higher-level communication node.
The train operation information and instruction information, which are information for the crew member transmitted from the upper communication node to the crew member, are received, and the train operation information and the instruction information are transmitted to the plurality of wireless sensors.
The train operation system according to any one of claims 1 to 3, wherein the train operation system is characterized in that.
Further, the in-train radio slave station is provided, and the in-train radio slave station is equipped with the in-train radio slave station.
The positioning information, the tag identification information of the wireless tag, and the terminal information about the information device in which the wireless tag is incorporated are received from the information collecting device, and the positioning information, the tag identification information, and the terminal information are obtained. Send to the upper communication node and
The train operation information and instruction information, which are information for the crew member transmitted from the upper communication node to the crew member, are received, and the train operation information and the instruction information are transmitted to the information collecting device.
The train operation system according to any one of claims 1 to 4, wherein the train operation system is characterized in that.
Further, a radio base station is provided, and the radio base station is equipped with a radio base station.
The positioning information, the tag identification information of the wireless tag, and the terminal information about the information device in which the wireless tag is incorporated are received from the lower communication node, and the positioning information, the tag identification information, and the terminal information are obtained. Send to the operation management device
The train operation information and instruction information, which are information for the crew member transmitted from the operation management device to the crew member, are received, and the train operation information and the instruction information are transmitted to the lower communication node.
The train operation system according to any one of claims 1 to 5, wherein the train operation system is characterized in that.
The operation management device is
The positioning information, the tag identification information of the radio tag, and the terminal information about the information device in which the radio tag is incorporated are received from the lower communication node, and the positioning information, the tag identification information, and the terminal information are used. Based on this, the train operation information and the instruction information to be transmitted to the crew are generated, and the train operation information and the instruction information are transmitted to the lower communication node.
The train operation system according to any one of claims 1 to 6, wherein the train operation system is characterized in that.
The wireless tag receives an authentication code from the cab of the train, and transmits the authentication code and the tag identification information of the wireless tag to the operation management device as a destination.
The operation management device issues authentication information for the driver's cab based on the authentication code, the positioning information, and the tag identification information, and transmits the authentication information to the wireless tag as a destination.
The train operation system according to any one of claims 1 to 7, wherein the train operation system is characterized in that.
The wireless tag transmits the tag identification information of the wireless tag to the operation management device as a destination.
The operation management device issues authentication information for the cab of the train based on the positioning information and the tag identification information, and transmits the authentication information to the wireless tag as a destination.
The train operation system according to any one of claims 1 to 7, wherein the train operation system is characterized in that.
The radio sensor includes an antenna installed outside the train or at a position where the outside of the train can be seen, and the antenna has an antenna gain in the direction outside the train rather than an antenna gain in the direction inside the train. Adjusted to be larger,
The information collecting device or the operation management device determines whether the crew member is outside the train or inside the train based on the positioning information.
The train operation system according to any one of claims 1 to 9, wherein the train operation system is characterized in that.
The information collecting device averages the plurality of distance measurement information and then generates the positioning information, or averages the generated plurality of the positioning information.
The train operation system according to any one of claims 1 to 10, wherein the train operation system is characterized in that.
The operation management device averages a plurality of the positioning information.
The train operation system according to any one of claims 1 to 11, characterized in that.
Of the plurality of wireless sensors, one is a primary wireless sensor and the other is a secondary wireless sensor.
The secondary radio sensor synchronizes with the time information of the primary radio sensor,
The primary radio sensor controls radio resources when the secondary radio sensor transmits a signal to the radio tag.
The train operation system according to any one of claims 1 to 12, characterized in that.
The primary radio sensor increases or decreases the radio resource for a particular secondary radio sensor based on the status of the radio tag.
The train operation system according to claim 13.
The wireless sensor synchronizes with the time information of the information collecting device.
The information gathering device controls radio resources when the radio sensor transmits a signal to the radio tag.
The train operation system according to any one of claims 1 to 12, characterized in that.
The information gathering device increases or decreases the radio resource for a particular radio sensor based on the status of the radio tag.
The train operation system according to claim 15, wherein the train operation system is characterized in that.
It is a train operation method of the train operation system,
The first step in which the crew's wireless tag performs ultra-high band wireless communication,
A second step in which a plurality of wireless sensors installed in the train perform ultra-high band wireless communication with the wireless tag and generate distance measurement information indicating the distance between the wireless tag and the wireless tag.
A third step in which the information collecting device uses the distance measurement information received from the plurality of wireless sensors to generate positioning information indicating the position of the wireless tag, and transmits information including the positioning information.
A fourth step in which the operation management device generates information for the crew member based on the information including the positioning information, and
A train operation method characterized by including.
A train operation system is composed of a wireless tag, a plurality of wireless sensors, and an operation management device, and is a control circuit for controlling the wireless tag.
The first preamble signal transmitted from the plurality of wireless sensors is analyzed to calculate the reception time of the radio wave in space, and the second preamble signal and the tag of the wireless tag are instructed by the plurality of wireless sensors. The identification information, the terminal information about the information device in which the wireless tag is incorporated, and the timing information including the transmission time and the reception time of the second preamble signal are transmitted to the plurality of wireless sensors.
Train operation information and instruction information, which are information for the crew members transmitted from the operation management device to the train crew members, are received from the plurality of radio sensors and notified to the information terminal held by the crew members.
A control circuit comprising the above-mentioned wireless tag.
A control circuit for controlling the radio sensor that transmits a first preamble signal, wherein the train operation system is composed of a radio tag, a plurality of radio sensors, and an operation management device.
From the radio tag, a second preamble signal, tag identification information of the radio tag, terminal information about an information device in which the radio tag is incorporated, a transmission time of the second preamble signal, and the first preamble signal. The timing information including the reception time of the preamble signal is received, the second preamble signal is analyzed to calculate the reception time of the radio wave in space, and the transmission time information of the first preamble signal and the timing information are used. The distance between the radio tag and the radio sensor is calculated using the above to generate distance measurement information indicating the distance between the radio tag and the radio sensor, and the distance measurement information, the tag identification information, and the like. And send the terminal information to the upper communication node,
The train operation information and instruction information, which are information for the crew members transmitted from the upper communication node to the train crew members, are received, and the first preamble signal, the train operation information, and the instruction information are used in the radio tag. send,
A control circuit comprising the above-mentioned wireless sensor.
A train operation system is composed of a wireless tag, a plurality of wireless sensors, and an operation management device, and is a control circuit for controlling the operation management device.
Positioning information indicating the position of the radio tag, tag identification information of the radio tag, and terminal information about an information device in which the radio tag is incorporated are received from a lower communication node, and the positioning information and the tag identification information are received. , And, based on the terminal information, generate train operation information and instruction information to be transmitted to the train crew, and transmit the train operation information and the instruction information to the lower communication node.
A control circuit characterized by having the operation management device carry out the above.
A storage medium in which a train operation system is composed of a wireless tag, a plurality of wireless sensors, and an operation management device, and a program for controlling the wireless tag is stored.
The program
The first preamble signal transmitted from the plurality of wireless sensors is analyzed to calculate the reception time of the radio wave in space, and the second preamble signal and the tag of the wireless tag are instructed by the plurality of wireless sensors. The identification information, the terminal information about the information device in which the wireless tag is incorporated, and the timing information including the transmission time and the reception time of the second preamble signal are transmitted to the plurality of wireless sensors.
Train operation information and instruction information, which are information for the crew members transmitted from the operation management device to the train crew members, are received from the plurality of radio sensors and notified to the information terminal held by the crew members.
A storage medium, characterized in that the wireless tag is used.
A storage medium in which a train operation system is composed of a wireless tag, a plurality of wireless sensors, and an operation management device, and a program for controlling the wireless sensor that transmits a first preamble signal is stored.
The program
From the radio tag, a second preamble signal, tag identification information of the radio tag, terminal information about an information device in which the radio tag is incorporated, a transmission time of the second preamble signal, and the first preamble signal. The timing information including the reception time of the preamble signal is received, the second preamble signal is analyzed to calculate the reception time of the radio wave in space, and the transmission time information of the first preamble signal and the timing information are used. The distance between the radio tag and the radio sensor is calculated using the above to generate distance measurement information indicating the distance between the radio tag and the radio sensor, and the distance measurement information, the tag identification information, and the like. And send the terminal information to the upper communication node,
The train operation information and instruction information, which are information for the crew members transmitted from the upper communication node to the train crew members, are received, and the first preamble signal, the train operation information, and the instruction information are used in the radio tag. send,
A storage medium, characterized in that the wireless sensor performs the above.
A storage medium in which a train operation system is composed of a wireless tag, a plurality of wireless sensors, and an operation management device, and a program for controlling the operation management device is stored.
The program
Positioning information indicating the position of the radio tag, tag identification information of the radio tag, and terminal information about an information device in which the radio tag is incorporated are received from a lower communication node, and the positioning information and the tag identification information are received. , And, based on the terminal information, generate train operation information and instruction information to be transmitted to the train crew, and transmit the train operation information and the instruction information to the lower communication node.
A storage medium, characterized in that the operation management device is used to carry out the above.