JP2017189063A - Train control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a train security system that inhibits wrong location information from being transmitted to a ground device from an on-board device of a train to prevent deterioration in safety on train operation.SOLUTION: When a power supply shut-off time for a safety device (109) is equal to or longer than a certain time, a train control device does not use internal information (124) containing train location information stored in a recording medium (125), as control information.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a train control device that increases the safety of train travel.

  In order to perform train control using a “closed block system” that permits operation of only one train in one area, train detection using a track circuit has been performed so far. However, in recent years, there has been a movement to reduce the cost of a railway communication system by introducing a wireless communication system for transmission between the vehicle and the ground to realize train detection based on a position report from the train.

  In the United States and China, introduction of a CBTC (Communication Based Train Control) system that performs train control by wireless communication is being promoted. On the other hand, in Europe, a system called ERTMS (European Rail Traffic Management System) / ETCS (European Train Control System) is being developed and introduced for the purpose of improving interoperability by sharing different signal systems in each country. . In ERTMS / ETCS, GSM-R (GSM-Railway) based on GSM (registered trademark) (Global System for Mobile Communications) network is used for a wireless system.

  Railway security systems such as those found in CBTC and ERTMS / ETCS are composed of an on-board device in a train and a ground device outside the train, and wirelessly transmit between the on-board device and the ground device. The on-board device recognizes the position information of the point by detecting the ground unit installed on the ground, and based on this position information and the speed information of the train, the travel permission received from the ground device, etc. The entire train is controlled such that the speed is checked, and when the train speed exceeds the speed limit, a brake command is output to reduce the train speed below the speed limit.

  In order to realize this control, the on-board device transmits information such as the position information of the own train to the ground device, and the ground device uses the track position information received from the track circuit in the section and the on-vehicle device, etc. Information such as train travel permission is calculated and the control information is transmitted to the on-board device.

  In the wireless train control system, the on-board device reads out the position information when the power was turned off previously recorded in the built-in recording medium when the power was turned on, and reports it to the ground device. The ground device can detect the position of the train without traveling until the upper device detects the ground element in order to determine the position, while the train remains at the position where the power is turned on.

  In order to realize this, Patent Document 1 discloses a train security system that records and holds internal information such as train position information on a recording medium before the on-vehicle device is turned off. In this patent document 1, “when train traveling or movement is detected in a state where the train internal information is recorded on the train recording medium, the internal information recorded on the recording medium is deleted. The internal information of the train is not recorded on the recording medium. "

JP 2014-161168 A

  In the train security system of Patent Document 1, when the train is moved by turning or towing while the power is turned off, the train position information recorded on the recording medium (the existing line position information) and the train are actually present. There exists a subject that a difference arises in a position.

  Therefore, an object of the present invention is to prevent erroneous position information from being transmitted from the on-board device of the train to the ground device, and to prevent a decrease in safety in train operation.

  In order to solve the above problems, the train control device of the present invention communicates with the ground unit, receives the vehicle's information received from the ground unit and outputs it, and detects the train speed and outputs it as the train speed. The device receives the information and the train speed that the ground unit has, and calculates and outputs the train position based on the position information and the train speed contained in the ground unit information. When the train speed exceeds the speed limit, the brake command is sent to the train. A security device having a speed check function and a recording medium for recording internal information used by the speed check function. The security device generates internal information including the train position and records the internal information on the recording medium. In the train control device to be operated, the security device is characterized in that the internal information recorded on the recording medium is not used for the speed check function when the power cutoff time to the security device exceeds a certain time.

  According to the present invention, it is possible to reduce the risk that a train that has been stopped with the power supply to the security device for a long time using the incorrect position information as control information.

  Problems, configurations, and effects other than those described above will become apparent from the following description of embodiments.

FIG. 1 is a diagram showing a configuration diagram of a train security system according to a first embodiment of the present invention. FIG. 2 is a flowchart showing an embodiment of a processing procedure of the train security system according to the first embodiment of the present invention. FIG. 3 is a diagram showing a configuration diagram of a train security system according to the second embodiment of the present invention. FIG. 4 is a flowchart showing an embodiment of a processing procedure of the train security system according to the second embodiment of the present invention. FIG. 5 is a diagram showing a configuration diagram of a train security system according to the third embodiment of the present invention. FIG. 6 is a flowchart showing an embodiment of a processing procedure of the train security system according to the third embodiment of the present invention. FIG. 7 is a diagram illustrating an example of information exchanged between the ground facility and the train and information held in the train.

  Hereinafter, examples will be described with reference to the drawings.

  FIG. 1 is a diagram illustrating a configuration of a train according to the present embodiment.

  The train 100 includes a cab notch 101 of the train 100 and a driving device 103 that captures the notch information 102 and a prime mover 105 that is driven by a power running signal 104 from the driving device 103.

  The train 100 is a security device 109 having a speed check function 110 that compares the train speed 106 output from the speed signal generator 107 attached to the wheel 127 of the train 100 and the speed limit included in the information 118 from the ground device. Have Further, the security device 109 outputs a brake command 108 according to the result of the speed check.

  The speed signal generator 107 acquires the rotational speed of the wheel 127, calculates the speed from the circumferential length of the wheel and the rotational speed of the wheel 127 per unit time, and outputs the train speed 106.

  The train 100 includes a timer 116 that measures time and a battery 112 that supplies power 114 to the timer in order to keep the time even while power supply to the security device 109 is interrupted. The battery 112 is supplied with power 113 from the security device 109 to the battery.

  The timer 116 transmits time information 115 to the security device 109.

  The train 100 includes a recording medium 125 that stores internal information 124.

  A ground element 130 having information 129 possessed by the ground element is laid along the route along which the train 100 travels. The vehicle element 126 possessed by the train 100 receives the information 129 possessed by the ground element, and the information 129 possessed by the ground element. Is transmitted to the security device 109.

  The security device 109 has a time comparison function 111 that is a feature of this embodiment. The time comparison function 111 is a function that compares the time information 115 from the timer 116 with the recording time included in the internal information 124 stored in the recording medium 125 and calculates the time difference.

  The security device 109 and the ground device 128 communicate, and information 118 from the ground device is transmitted from the ground device 128 to the security device 109 via the communication path 117, and the security device 109 to the ground device 128 receives the security. Information 119 from the device is conveyed.

  The information 118 from the ground device, the information 119 from the security device, the internal information 124, and the information 129 held by the ground device include, for example, the information shown in FIG.

  The position information included in the information 119 from the security device and the internal information 124 is the position information calculated in the security device 109 based on the position information included in the information 129 held by the ground unit and the train speed 106.

  A data bus 120 for transmitting and receiving data is provided between the security device 109 and the recording medium 125, and the recording medium 125 is controlled by a write signal 121, a read signal 122, and an erase signal 123 from the security device 109.

  First, a basic operation in a train security system using radio will be described with reference to FIG. When the train 100 passes near the ground unit 130 installed on the ground, the vehicle upper unit 126 receives the information 129 held by the ground unit and transmits it to the security device 109.

  The positional information included in the received information 129 of the ground unit is transmitted from the security device 109 to the ground device 128 as information 119 from the security device.

  Communication is established between the security device 109 and the ground device 128 whose position information has been determined. When the communication is established, the ground device 128 calculates information such as the travel permission of the train 100 in the line section using the information 119 from the track circuit in the section and the security device, and the like through the communication path 117. Information 118 from the ground device is transmitted to the security device 109. The security device 109 transmits information 119 from the security device to the ground device 128 at regular intervals.

  Further, the communication path 117 is not limited to wireless communication, and a wired transmission line is also applicable. For example, in the case of a wired connection, communication using a track circuit is used.

  The train speed 106 may be obtained not from the speed signal generator 107 attached to the wheel 127 but from a speed detection device that detects the speed of the train.

  The train speed 106 may be obtained from a train speed detection method using an acceleration sensor.

  The train speed 106 may be obtained from a train speed detection method using electromagnetic waves or sound waves.

  The security device 109 performs a speed check based on the train position information, the control information such as the train speed 106 from the speed signal generator 107 and the travel permission obtained from the ground device 128, and the train speed exceeds the speed limit. A brake command 108 is issued. The location information included in the information 129 held by the ground unit, the location information calculated by the security device 109 from the train speed 106, the time acquired from the timer 116, and the like as the internal information 124, and the security device 109 is recorded at a constant cycle 125.

  This fixed period is set to 500 ms, but may be set to an appropriate value according to conditions. For example, when the speed of the train is high, it may be changed according to the speed of the train, such as shortening a certain period in order to record frequently. In addition, when the processing load of the security device 109 is high, the constant period may be lengthened to suppress the processing load.

  After the power is turned on, the security device 109 of this embodiment uses the time comparison function 111 to compare the time information 115 from the timer 116 with the recording time included in the internal information 124 recorded in the recording medium, and to calculate the time difference. calculate. If the calculated time difference is within a certain time, the internal information including the train position information stored in the recording medium is used as the control information. Therefore, the position information included in the internal information 124 is used as the current position. 128 to establish communication with the ground device 128.

  The fixed time is, for example, a time during which the internal information including the position information is not deleted when the security device is reset or restarted, and is about several minutes to several tens of minutes.

  Moreover, it is good also considering this fixed time as the time when a train does not collide even if it moves by advancing or towing. For example, the shortest time during which the train does not collide when traveling at a slow speed may be set as the certain time. In this case, assuming that the minimum interval between trains at normal time is 100 m and the speed of slowing is 10 km / h, 10 km / h = 2.78 m / s and 100 / 2.78 = 36 s.

  When the calculated time difference exceeds a certain time, the internal information including the train position information stored in the recording medium is not used as control information. Therefore, since a train that does not have position information cannot establish communication with the ground device 128, it is necessary to obtain position information. The driver or maintenance personnel powers the cab notch 101, moves the prime mover 105 with the driving device 103, and the train 100 passes the vicinity of the ground unit 130, so that the position information can be determined. The position information is transmitted to the ground device 128, and communication with the ground device 128 is established.

  In addition, when the calculated time difference exceeds a certain time, a part or all of the internal information 124 may be deleted. The time information 115 may be obtained from the ground device 128. Further, the time information 115 may be obtained from other equipment provided in the train 100.

  FIG. 2 is a flowchart showing the operation of this embodiment.

  Step 200: Turn on the security device.

  Step 201: The security device 109 compares the time information from the timer with the recording time included in the internal information 124 stored in the recording medium, and calculates the time difference. It is determined whether or not the calculated time difference is within a certain time. If it is within the predetermined time, the process proceeds to step 202. If it is not within a certain time or if time information is stored in the storage medium, the process proceeds to step 203.

  Step 202: It means that the stored position information is within a certain time, so the security device 109 uses the stored position information as control information. The process proceeds to step 205.

  Step 203: It means that the stored position information was information before a certain time, so the security device 109 does not use the position information as control information. The process proceeds to step 204.

  Step 204: The driver or maintenance staff powers the cab notch 101, moves the motor 105 with the driving device 103, moves the train to a position where the ground unit is located, and acquires position information. In order to perform this operation, the security device 109 notifies the cab notch 101 that the stored position information was information before a certain time, and the cab notch 101 receives the information. A display prompting the driver or maintenance staff to perform the operation may be displayed. Thereafter, the process proceeds to step 205.

  Step 205: The security device 109 transmits the position information to the ground device.

  Step 206: The security device 109 records the time and position information on the recording medium.

Steps 205 and 206 are repeated at regular intervals.
Thus, when the security device is turned on, the time recorded on the recording medium is compared with the current time, and if the time difference is greater than a certain time, the position information stored on the recording medium is used as control information. It is characterized by not using it. In step 203, the security device 109 may delete the position information instead of using the position information as control information.

  According to the form of the present embodiment, the train that has been stopped with the power supply to the safety device for a long time moved may be moved by turning or towing, etc., and may retain incorrect position information. By not using, as control information, the position information held by the train that has been stopped with the power to the vehicle being stopped, the risk of using incorrect position information as control information can be reduced.

  FIG. 3 is a diagram illustrating the configuration of the train of the present embodiment.

  FIG. 3 shows a train security system in which the time comparison function 111, the battery 112, and the timer 116 shown in FIG. 1 are removed and a volatile area 303 and a volatile area battery 300 are provided in the storage medium 125.

  The volatile area battery 300 receives a power supply 301 from the security device 109 to the volatile area battery. The volatile area battery 300 supplies the volatile area 303 with power supply 302 to the volatile area.

  The feature of this embodiment is that the internal information 124 is recorded in the volatile area 303 and that the volatile area 303 is supplied with power from the volatile area battery 300.

  The internal information 124 recorded in the volatile area 303 does not disappear while the power supply to the security device 109 continues. When the power supply to the security device 109 is cut off, the power supply 301 from the security device 109 to the volatile area battery is cut off. The volatile area battery 300 supplies the held power to the volatile area 303 by the power supply 302 to the volatile area. When the power held in the volatile area battery 300 is exhausted and the power supply to the volatile area 303 is cut off, the internal information 124 stored in the volatile area 303 disappears.

  By changing the capacity of the volatile area battery 300, it is possible to change the time during which the internal information 124 can be held in the volatile area 303 when the security device 109 is powered off.

  The basic operation of the train security system using radio is the same as that shown in the first embodiment.

  FIG. 4 is a flowchart showing the operation of this embodiment.

  Step 400: Power on the security device.

  Step 401: The security device 109 reads position information stored in a volatile area.

  Step 402: If position information has been recorded in the volatile area, the position information can be read out, and the process proceeds to step 404. If the position information is not recorded in the volatile area, the position information cannot be read out, and the process proceeds to step 403.

Step 403: The driver or maintenance staff powers the cab notch 101, moves the motor 105 with the driving device 103, moves the train to a position where the ground unit is located, and acquires position information. In order to perform this operation, the security device 109 notifies the cab notch 101 that the stored position information was information before a certain time, and the cab notch 101 receives the information. A display prompting the driver or maintenance staff to perform the operation may be displayed. Thereafter, the process proceeds to step 404. Step 404: The security device 109 transmits the position information to the ground device.

  Step 405: The security device 109 records the position information in the volatile area.

  Steps 404 and 405 are repeated at regular intervals.

  As described above, the position information naturally disappears after a certain period of time has elapsed since the power-off of the security device, and the position information cannot be read when the power of the security device is restored.

  According to the form of the present embodiment, the train that has been stopped for a long time with the power supply to the security device moved by turning or towing, etc., may hold incorrect position information, but in the volatile area Memorize the location information, and when the time elapses, the location information disappears, reducing the risk that the train that has been stopped for a long time with the power supply to the security device used the wrong location information as control information be able to.

  FIG. 5 is a diagram showing the configuration of the train of this embodiment.

  FIG. 5 shows a train provided with a timer relay 500 from which the time comparison function 111, the battery 112, and the timer 116 shown in FIG.

  The timer relay 500 receives the power-off information 501 for the security device 109. The timer relay changes the state of the relay when a certain time has elapsed after receiving the power-off information 501. The security device 109 reads the timer relay state 502 after the power supply is restored.

  The feature of this embodiment is that the timer relay 500 is used and the timer in the timer relay 500 is started by the power supply state of the security device 109.

  When the time from power-off to recovery of the security device 109 is earlier than the set time of the timer in the timer relay 500, the internal information 124 stored in the recording medium 125 is used as train control information.

  When the time from power-off to recovery of the security device 109 is later than the set time of the timer in the timer relay 500, the internal information 124 stored in the recording medium 125 is not used as train control information.

  If the time from power off to recovery is later than the set time of the timer in the timer relay 500, the internal information stored in the recording medium may be deleted.

  The basic operation of the train security system using radio is the same as that shown in the first embodiment.

  FIG. 6 is a flowchart showing the operation of this embodiment.

  Step 600: Turn on the security device.

  Step 601: The security device 109 confirms the state of the timer relay.

  Step 602: When the state of the timer relay is a state in which a certain time has not elapsed after the power supply to the security device is turned off, the process proceeds to Step 603. If the fixed time has elapsed, the process proceeds to step 604.

  Step 603: The security device 109 uses internal information including train position information stored in the recording medium as control information. The process proceeds to step 606.

  Step 604: The security device 109 does not use the internal information including the train position information stored in the recording medium as control information. Control goes to step 605.

Step 605: The driver or maintenance staff powers the cab notch 101, moves the prime mover 105 with the driving device 103, moves the train to a position where the ground child is located, and acquires position information. In order to perform this operation, the security device 109 notifies the cab notch 101 that the stored position information was information before a certain time, and the cab notch 101 receives the information. A display prompting the driver or maintenance staff to perform the operation may be displayed. Thereafter, the process proceeds to step 606. Step 606: The security device 109 transmits the position information to the ground device.

  Step 607: The security device 109 records position information on a recording medium.

  Steps 606 and 607 are repeated at regular intervals.

  In this way, the timer relay status changes when a certain period of time elapses after the safety device power is shut off, and the status of the timer relay is confirmed when the safety device power is restored, and internal information including train position information is used for train control. It is characterized by determining whether or not.

  According to the form of the present embodiment, the train that has been stopped for a long time with the power supply to the security device moved by turning or towing, etc. may be holding incorrect position information, If the power cut-off time is longer than a certain time, the status of the timer relay is changed, and the internal information held in the recording medium is not used as control information. It is possible to reduce the risk that a train that has been used uses incorrect position information as control information.

  In addition, this invention is not limited to an above-described Example, Various modifications are included. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment. Each of the above-described configurations, functions, processing units, processing means, and the like may be realized by hardware by designing a part or all of them with, for example, an integrated circuit. Each of the above-described configurations, functions, and the like may be realized by software by interpreting and executing a program that realizes each function by the processor. Information such as programs, tables, and files for realizing each function can be stored in a memory, a storage device such as a hard disk SSD (Solid State Drive), or a recording medium such as an IC card, SD card, or DVD.

100 train 101 cab notch 102 notch information 103 drive device 104 power running signal 105 prime mover 106 train speed 107 train speed signal generator 108 brake command 109 security device 110 speed check function 111 time comparison function 112 battery 113 power supply 114 to battery 114 timer Power supply 115 Time information 116 Timer 117 Communication path 118 Information from ground device 119 Information from security device 120 Data bus 121 Write signal 122 Read signal 123 Erase signal 124 Internal information 125 Recording medium 126 Vehicle upper 127 Wheel 128 Ground device 129 Information held by ground unit 130 Ground unit 300 Volatile region battery 301 Power supply to volatile region battery 302 Power supply to volatile region 303 Volatile region 500 Timer relay 501 Source disconnection information 502 Timer relay status

Claims (11)

An onboard child (126) that communicates with the ground unit (130), receives and outputs information (129) held by the ground unit, and
A speed detector (107) for detecting the speed of the train (100) and outputting it as a train speed (106);
The information (129) and the train speed (106) possessed by the ground unit are received, the train position is calculated and output by the position information and the train speed (106) included in the information (129) possessed by the ground unit, A security device (109) having a speed check function (110) that issues a brake command (108) to the train (100) when the train speed (106) exceeds a speed limit;
A recording medium (125) for recording internal information (124) used by the speed check function (110),
The security device (109) generates the internal information (124) including the train position, and records the internal information (124) on the recording medium (125).
When the power cut-off time to the security device (109) exceeds a predetermined time, the security device (109) uses the internal information (124) recorded on the recording medium (125) as the speed check function ( 110) A train control device that is not used. In the train control device according to claim 1,
The security device (109) erases the internal information (124) recorded on the recording medium (125) when a power cut-off time to the security device (109) exceeds a predetermined time. Train control device. In the train control device according to any one of claims 1 to 2,
A timer (116) for measuring time and outputting time information (115);
A battery (112) for supplying power (114) to the timer (116) even when the power to the security device (109) is cut off,
The security device (109) receives the time information (115) from the timer (116) when recording the internal information (124) on the recording medium (125), records the time information (115), When the speed check function (110) uses the internal information (124), the time information (115) is received from the timer (116), and the recorded time of the internal information (124) and the time information ( 115) and a time comparison function (111) for outputting an elapsed time since the internal information (124) was recorded, and when it is determined that the elapsed time exceeds a predetermined time, The train control device, wherein the information (124) is not used by the speed check function (110). In the train control device according to claim 3,
When the speed check function (110) uses the internal information (124), the security device (109) calculates the elapsed time since the internal information (124) was recorded from the time comparison function (111). The train controller according to claim 1, wherein the internal information (124) is deleted when it is determined that the elapsed time has exceeded a predetermined time. In the train control device according to any one of claims 1 to 2,
The recording medium (125) can store information when a certain amount of power is supplied, and can store a volatile area (303) that cannot store information when the power is not supplied. Prepared,
A battery (300) that is supplied with electric power from the security device (109), stores electric power, and supplies electric power (302) to the volatile region (303);
The security device (109) writes the internal information (124) to the volatile area (303) when recording the internal information (124) to the recording medium (125),
When the power to the security device (109) is cut off, the supply of power to the battery (300) is interrupted, the power supplied by the battery (300) is reduced, and the power of a certain amount or more is supplied. The train control device characterized in that the internal information (124) recorded in the volatile area (303) disappears when it disappears. In the train control device according to claim 1,
A timer relay (500) whose state changes depending on the time from power-off of the security device (109),
The security device (109) determines whether to use the internal information (124) stored in the recording medium (125) for the speed check function (110) according to the state of the timer relay (500). A train control device characterized by that. In the train control device according to claim 6,
The train control device, wherein the security device (109) holds or deletes the internal information (124) stored in the recording medium (125) according to the state of the timer relay (500). In the train control device according to any one of claims 1 to 7,
The train control device, wherein the speed detection device is a speed signal generator (107) for converting the number of rotations of a wheel into a signal. In the train control device according to any one of claims 1 to 7,
The train control device, wherein the speed detection device is a device that measures a speed using electromagnetic waves. In the train control device according to any one of claims 1 to 7,
The train control device, wherein the speed detection device is a device that measures a speed using sound waves. In the train control device according to any one of claims 1 to 7,
The train control device, wherein the speed detection device is a device that measures a speed using an acceleration sensor.

Images