Train system and train position calculation method

Abstract

To provide a train system which accurately calculates a train position for maintenance when abnormality is detected in a train.SOLUTION: A train system (10) comprises an abnormality detection device (100) which periodically transmits abnormality detection information indicating that abnormality of a train has been detected, and a train position calculation device (200) which receives the abnormality detection information from the abnormality detection device (100), and amends the position of the train on the basis of delay time information indicating delay time taken until the abnormality detection device (100) transmits the information after the detection of the abnormality.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a train system and a train position calculation method for calculating a train position. [Background technology]

[0002] In recent years, a method has been disclosed for easily calculating train positions from the position of a ground device and the radio propagation delay time in radio communications between on-board devices and the ground device. For example, the train position calculation method disclosed in Patent Document 1 calculates the propagation delay time from the response time of a response signal from the ground device in response to a call signal transmitted from an on-board device having a radio mounted on the train, calculates the distance between the train and the ground device, and then calculates the train position. In a train system, there are cases where it is necessary to calculate the train's position when an abnormality occurs in the train for maintenance. In such a train system, a device that detects abnormalities periodically transmits abnormality detection information, and a device that calculates the train's position adds the calculated train position information to the received abnormality detection information and transmits it to a ground device. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2009-225585 Summary of the Invention [Problem to be solved by the invention]

[0004] However, such train systems have a problem in that, due to the transmission cycle time of the abnormality detection information, an error occurs between the train position when the abnormality is detected and the calculated train position.

[0005] The present disclosure has been made to solve the above-mentioned problems, and aims to provide a train system that accurately calculates the train position when an abnormality is detected. [Means for solving the problem]

[0006] The train system according to the present disclosure includes an abnormality detection device that detects abnormalities in a train and a train position detection device. measurement and a train position calculation device that periodically transmits abnormality detection information indicating that an abnormality has been detected in a train. The train system includes a train position calculation device that periodically transmits abnormality detection information indicating that an abnormality has been detected in a train, and a train position calculation device that receives the abnormality detection information from the abnormality detection device and calculates a train position based on delay time information indicating a delay time required from when the abnormality detection device detects the abnormality until when the abnormality detection device transmits the information. The distance traveled by the train during the delay time is calculated based on the measured and a train position calculation device that corrects the train position.

[0007] The train position calculation method according to the present disclosure includes a step in which an abnormality detection device detects an abnormality in a train and periodically transmits abnormality detection information indicating that an abnormality in the train has been detected; and a train position calculation device receives the abnormality detection information from the abnormality detection device and calculates the train position based on delay time information indicating a delay time required from when the abnormality detection device detects the abnormality until when the abnormality detection device transmits the information. The distance traveled by the train during the delay time is calculated based on the measured and correcting the train position. [Effects of the Invention]

[0008] According to the train system and train position calculation method disclosed herein, the train position can be accurately calculated when an abnormality is detected. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a configuration diagram showing a train system according to a first embodiment of the present disclosure. [Figure 2] 4 is a flowchart illustrating an operation of the anomaly detection device according to the first embodiment of the present disclosure. [Figure 3] 4 is a flowchart showing the operation of the train position calculation device according to the first embodiment of the present disclosure. [Figure 4] 1 is a diagram illustrating an example of the configuration of a processing circuit of an abnormality detection device and a train position calculation device of a train system according to a first embodiment of the present disclosure. [Figure 5] 10 is a configuration diagram showing an anomaly detection device according to a second embodiment of the present disclosure. [Figure 6] 10 is a flowchart showing the operation of the anomaly detection device after power-on according to the second embodiment of the present disclosure. [Figure 7] 10 is a flowchart illustrating an operation of the anomaly detection device according to the second embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0010] Embodiment 1 1 is a configuration diagram showing a train system according to a first embodiment of the present disclosure. As shown in Fig. 1, a train system 10 is provided on a vehicle and includes an abnormality detection device 100 that detects abnormalities in the train, and a train position calculation device 200 that calculates the train position.

[0011] The abnormality detection device 100 may be, for example, a D-SR (Digital-Space Radio) that performs telephone calls and train operation data communication with trackside equipment (not shown) using wireless communication. The train position calculation device 200 may be, for example, a TCMS (Train Control and Management System) that is an integrated train management device that controls train operations.

[0012] The anomaly detection device 100 is composed of an anomaly detection unit 101 that detects anomalies, a delay time calculation unit 102 that calculates the delay time required from when the anomaly detection unit detects an anomaly to when it transmits anomaly detection information indicating that the anomaly has been detected, and an information periodic transmission unit 103 that periodically transmits status information including the anomaly detection information and the calculated delay time information.

[0013] The anomaly detection unit 101 detects an anomaly, for example, when an anomaly occurs in wireless communication between the anomaly detection device 100 and a ground device. Also, for example, when a component (not shown) that constitutes the anomaly detection device 100 itself fails, the anomaly detection unit 101 detects an anomaly.

[0014] The delay time calculation unit 102 calculates the delay time from when the abnormality detection unit 101 detects an abnormality until when the abnormality detection information is transmitted to the train position calculation device 200 .

[0015] The information periodic transmission unit 103 periodically transmits the abnormality detection information and delay time information as status information to the train position calculation device 200. The information periodic transmission unit 103 may also transmit, as status information, information such as field strength information in wireless communication between the abnormality detection device 100 and the ground device.

[0016] The train position calculation device 200 is composed of a train position measurement unit 201 that measures the train position, a speed measurement unit 202 that measures the speed, an information receiving unit 203 that receives status information transmitted from the abnormality detection device 100, and a train position correction unit 204 that calculates a train position correction value and corrects the train position from the train position measured by the train position measurement unit 201, the speed measured by the speed measurement unit 202, and the delay time information received by the information receiving unit 203.

[0017] The train position measurement unit 201 measures the train position. For example, the train position is measured by calculating the distance (kilometers) from the starting point to the train position in kilometers from the wheel diameter and the number of wheel rotations.

[0018] The speed measurement unit 202 receives a frequency from, for example, a propulsion control device equipped with a sensor and measures the speed. Alternatively, the speed measurement unit 202 may receive the speed from a tachograph, an automatic train control (ATC), or the like.

[0019] The information receiving unit 203 receives the abnormality detection information and the status information including the delay time information periodically transmitted from the information periodic transmission unit 103 of the abnormality detection device 100 .

[0020] The train position correction unit 204 receives the train position from the train position measurement unit 201, the speed from the speed measurement unit 202, and the delay time information from the information receiving unit 203. The train position correction unit 204 calculates the distance to be corrected from the speed and delay time information, and corrects the train position.

[0021] Next, the train position correction in the train system 10 configured as above will be described with reference to FIGS.

[0022] 2 is a flowchart showing the operation of the anomaly detection device according to the first embodiment of the present disclosure. The anomaly detection device 100 performs this operation every time it receives a status information request from the train position calculation device 200.

[0023] In S101 of FIG. 2, the abnormality detection unit 101 checks whether an abnormality has occurred, and if an abnormality has occurred, detects it as abnormality detection information.

[0024] 2, the delay time calculation unit 102 calculates the delay time required from when the abnormality detection unit 101 detects an abnormality until when the status information is transmitted to the train position calculation device 200. The train moves forward from the position where the abnormality was detected by a distance corresponding to the delay time.

[0025] In S103 of FIG. 2, the information periodic transmission unit 103 periodically transmits status information including abnormality detection information and delay time information to the train position calculation device 200.

[0026] 3 is a flowchart showing the operation of the train position calculation device according to the first embodiment of the present disclosure. The train position calculation device 200 performs this operation every time it receives state information from the abnormality detection device 100.

[0027] 3, the information receiving unit 203 receives the status information transmitted from the abnormality detection device 100 and extracts the abnormality detection information and delay time information. Also, the speedometer unit 202 measures the speed of the train.

[0028] In S202 of FIG. 3, the train position correction unit 204 calculates the distance traveled by the train during the delay time from the train position where the abnormality was detected, based on the delay time information from the information receiving unit 203 and the train speed from the speed measurement unit 202.

[0029] 3, the train position correction unit 204 corrects the train position by subtracting the calculated train movement distance from the train position measured by the train position measurement unit 201 to calculate the train position at which the abnormality was detected. The train position calculation device 200 assigns the train position corrected by the train position correction unit 204 to the abnormality detection information and stores it in a storage device (not shown). The train position and abnormality detection information may be transmitted to a ground device.

[0030] The anomaly detection device 100 and the train position calculation device 200 are realized, for example, by a processing circuit. The processing circuit may be a memory that stores a program and a processor that executes the program stored in the memory, or it may be dedicated hardware. The processing circuit is also called a control circuit.

[0031] FIG. 4 is a diagram illustrating an example of the configuration of a processing circuit of the anomaly detection device and the train position calculation device included in the train system according to this embodiment. The processing circuit 90 illustrated in FIG. 4 is a control circuit and includes a processor 91 and a memory 92. When the processing circuit 90 includes 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. The processing circuit 90 realizes each function by having the processor 91 read and execute the program stored in the memory 92. That is, the processing circuit 90 includes the memory 92 for storing a program that results in the processing of the anomaly detection device 100 and the train position calculation device 200. The program may be provided by a storage medium on which the program is stored, or by other means such as a communication medium.

[0032] As described above, the train system 10 according to this embodiment includes an abnormality detection device 100 that periodically transmits abnormality detection information indicating that a train abnormality has been detected, and a train position calculation device 200 that receives the abnormality detection information from the abnormality detection device 100 and corrects the train position based on delay time information indicating the delay time required from when the abnormality detection device detects the abnormality until when it transmits the information.

[0033] In addition, the train position calculation method according to this embodiment includes a step in which the abnormality detection device 100 detects a train abnormality and periodically transmits abnormality detection information indicating that a train abnormality has been detected, and a step in which the train position calculation device 200 receives the abnormality detection information from the abnormality detection device 100 and corrects the train position based on delay time information indicating the delay time required from when the abnormality detection device 100 detects the abnormality until when it transmits the information.

[0034] This allows the train position where the abnormality occurred to be calculated accurately. Furthermore, the corrected train position can be added to the abnormality detection information and stored in a storage device or transmitted to a ground device.

[0035] Embodiment 2 The train system of the second embodiment will be described with reference to Figures 5 to 7. In the description of the second embodiment, the same reference numerals as those in the first embodiment indicate the same or corresponding parts.

[0036] 5 is a configuration diagram illustrating an anomaly detection device for a train system according to Embodiment 2 of the present disclosure. As shown in FIG. 5, the anomaly detection device 100 further includes a delay time storage unit 104 that stores the delay time calculated by the delay time calculation unit 102.

[0037] 6 is a flowchart showing the operation of the anomaly detection device after power-on according to Embodiment 2 of the present disclosure. The anomaly detection device 100 performs this operation only once after power-on.

[0038] In S301 of FIG. 6, the delay time calculation unit 102 calculates the delay time from when the abnormality detection unit 101 detects an abnormality until when the status information is transmitted to the train position calculation device 200.

[0039] In S302 of FIG. 6, the delay time storage unit 104 stores the delay time information calculated by the delay time calculation unit 102.

[0040] 7 is a flowchart showing the operation of the anomaly detection device according to the second embodiment of the present disclosure. The anomaly detection device 100 performs this operation every time it receives a status information request from the train position calculation device 200.

[0041] In S401 of FIG. 7, the abnormality detection unit 101 checks whether an abnormality has occurred, and if an abnormality has occurred, detects it as abnormality detection information.

[0042] In S402 of Figure 7, the information periodic transmission unit 103 periodically transmits status information including abnormality detection information detected by the abnormality detection unit 101 and delay time information stored in the delay time memory unit 104 to the train position calculation device 200.

[0043] The train position calculation device 200 corrects the train position in the train position correction unit 204 based on the delay time information received by the information receiving unit 203, the train speed measured by the speedometer unit 202, and the train position measured by the train position measurement unit 201.

[0044] In this embodiment, an example has been shown in which the delay time storage unit 104 is provided in the anomaly detection device 100, but the delay time storage unit 104 may be provided in the train position calculation device 200. In this case, the anomaly detection device 100 transmits only the anomaly detection information to the train position calculation device 200 as status information.

[0045] As described above, the train system according to the second embodiment is configured to further include the delay time storage unit 104 that stores the delay time. This makes it possible to reduce the number of operations of the anomaly detection device 100 that are performed each time a status information request is received from the train position calculation device 200, when the delay time is constant.

[0046] The configurations described in the above embodiments are merely examples of the contents of the present disclosure, and may be combined with other known technologies. Furthermore, parts of the configurations may be omitted or modified without departing from the scope of the present disclosure. [Explanation of symbols]

[0047] 10 Train system, 100 Abnormality detection device, 101 Abnormality detection unit, 102 Delay time calculation unit, 103 Information period transmission unit, 104 Delay time storage unit, 200 Train position calculation device, 201 Train position measurement unit, 202 Speed ​​measurement unit, 203 Information reception unit, 204 Train position correction unit

Claims

1. an abnormality detection device that detects abnormalities in trains; A train system including a train position calculation device that measures train positions, an abnormality detection device that periodically transmits abnormality detection information indicating that an abnormality in a train has been detected; a train position calculation device that receives the abnormality detection information from the abnormality detection device, calculates a distance traveled by the train during the delay time based on delay time information indicating a delay time required from when the abnormality detection device detects the abnormality until when the abnormality detection device transmits the information, and corrects the measured train position; A train system comprising:

2. The abnormality detection device includes an abnormality detection unit that detects an abnormality in a train, a delay time calculation unit that calculates the delay time; an information periodic transmission unit that periodically transmits the abnormality detection information and the delay time information; Equipped with The train position calculation device includes: an information receiving unit that receives the abnormality detection information and the delay time information; a train position measurement unit that measures the train position; a speed measurement unit that measures the speed of a train; a train position correction unit that calculates a distance traveled by the train during the delay time based on the delay time information and the train speed, and corrects the train position; The train system according to claim 1 , comprising:

3. a delay time storage unit that stores the delay time in at least one of the abnormality detection device and the train position calculation device; 3. The train system according to claim 1 or 2, comprising:

4. a step in which the abnormality detection device detects an abnormality in the train and periodically transmits abnormality detection information indicating that the abnormality in the train has been detected; a train position calculation device receiving the abnormality detection information from the abnormality detection device, calculating a distance traveled by the train during the delay time based on delay time information indicating a delay time required from when the abnormality detection device detects an abnormality until when the abnormality detection device transmits the information, and correcting the measured train position; A train position calculation method comprising:

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