JP7221449B2 - TRAIN DETECTION DEVICE, TRAIN DETECTION SYSTEM AND TRAIN DETECTION METHOD - Google Patents

Description

TECHNICAL FIELD The present disclosure relates to a train detection device, a train detection system, and a train detection method for detecting on-track positions of trains.

2. Description of the Related Art Conventionally, there is a train detection device that detects the location of a train using a track circuit. However, track circuits require a lot of equipment. In addition, the track circuit is easily affected by the surface condition of the wheel tread, the surface condition of the rail, and the like. Therefore, the method using the track circuit entails installation and maintenance costs. In order to solve such a problem, Patent Document 1 discloses that a plurality of sections are set on the track, an axle detection device is provided at the boundary of each section, the number of axles of the train entering each section, and the number of axles of the train leaving each section. A technique for detecting the location of a train while reducing installation and maintenance costs is disclosed by counting the number of axles of the train.

JP 2015-33989 A

However, according to the above-described conventional technology, if even one of the axle detection devices installed at the boundaries of each section, that is, each blocked section fails, the axle in the blocked section where the faulty axle detection device is provided at the boundary will not operate. Enters and exits cannot be counted accurately. As a result, there is a problem that the position of the train cannot be detected, and the operation of the train is interrupted.

The present disclosure has been made in view of the above, and an object of the present disclosure is to obtain a train detection device capable of detecting the location of a train while avoiding a situation in which train operation is interrupted.

In order to solve the above-described problems and achieve the object, the train detection device of the present disclosure is connected to a plurality of train detection sensors installed on a track on which a train runs and capable of detecting a train. A sensor connection that acquires a signal that can determine whether or not a train has been detected, and multiple blocked sections with train detection sensors on both ends of the track are set, and whether or not a train is on the track is determined in each blocked section. and a detection unit for detecting. The detection unit sets a first closed section having a first train detection sensor at one end and a second train detection sensor at the other end, and a second train detection sensor at one end and a third train detection sensor at the other end. When the use of the second train detection sensor is stopped when the second closed section to be the end is set, the first train detection sensor is one end and the third train detection sensor is the other end. set the closed section, set the closed section using all the train detection sensors in the first time period when the number of trains in operation is more than the specified number, and set the closed section using all the train detection sensors, It is characterized in that in the zone, the blocked section is set using a smaller number of train detection sensors than the number of train detection sensors used in the first time zone.

Advantageous Effects of Invention According to the present disclosure, the train detection device has the effect of being able to detect the position of the train on the track while avoiding a situation in which the operation of the train is interrupted.

1 is a diagram showing a configuration example of a train detection system according to Embodiment 1. FIG. A first diagram showing the state of each blocked section in the train detection system according to Embodiment 1 A second diagram showing the state of each blocked section in the train detection system according to Embodiment 1 A third diagram showing the state of each blocked section in the train detection system according to Embodiment 1 Flowchart showing the operation of the train detection device according to Embodiment 1 FIG. 4 is a diagram showing the state of each blocked section when the train detection device according to Embodiment 1 is applied to a system including an automatic train control device and a train detection device; FIG. 4 is a diagram showing an example of a case where a processing circuit included in the train detection device according to Embodiment 1 is configured with a processor and a memory; FIG. 4 is a diagram showing an example of a case where a processing circuit included in the train detection device according to Embodiment 1 is configured with dedicated hardware; The figure which shows the structural example of the train detection system which concerns on Embodiment 2. A first diagram showing the state of each blocked section in the train detection system according to Embodiment 2 A second diagram showing the state of each blocked section in the train detection system according to Embodiment 2 Flowchart showing the operation of the train detection device according to the second embodiment

A train detection device, a train detection system, and a train detection method according to embodiments of the present disclosure will be described below in detail based on the drawings.

Embodiment 1.
FIG. 1 is a diagram showing a configuration example of a train detection system 100 according to Embodiment 1. As shown in FIG. The train detection system 100 includes a train detection device 1, a ground device 2, train detection sensors 3a to 3e, traffic signals 4a to 4e, a track 5, and a train 6. In the train detection system 100, the track 5 on which the train 6 runs is provided with closed sections A to D. The traveling direction of the train 6 is the rightward direction as indicated by the arrow in FIG. The same applies to subsequent figures.

The train detection device 1 detects the presence of a train 6 in each closed section. The detailed configuration and operation of the train detection device 1 will be described later.

The trackside device 2 controls the traffic signals 4a to 4e, switches (not shown), etc., based on the determination result of the presence or absence of the train 6 in each closed section within the jurisdiction range of the train detection device 1. The ground device 2 is, for example, an interlocking device, a blocking device, or the like.

The train detection sensors 3a to 3e are installed on the track 5 on which the train 6 runs and detect the passage of the train 6, that is, the train 6 is detected. The train detection sensors 3a to 3e are, for example, an axle detection sensor that counts the number of axles of the train 6 that has passed, a laser that detects the passage of the train 6, or the like. Regarding the laser, by installing two lasers at each installation position of the train detection sensors 3a to 3e with a distance in the direction of travel of the train 6, the train detection device 1 detects the following from the order in which the laser light is cut off. It is possible to determine from which direction the train 6 has traveled. Also, the train detection sensors 3a to 3e may be beacons that detect the train 6 by communicating with onboard coils mounted on the train 6. FIG. As for the on-board coil and the ground coil, the on-board coil may notify the presence of the train 6, and the ground coil may detect the train 6 when receiving the notification from the on-board coil. may be transmitted, the onboard coil responds to the signal from the onboard coil, and the train 6 is detected when the onboard coil acquires the response from the onboard coil. In the following description, the train detection sensors 3a to 3e may be referred to as the train detection sensor 3 when not distinguished.

Signals 4a to 4e are installed at the boundaries of each blocked section. Signals 4a to 4e, under the control of ground equipment 2, give the train 6 a progress indication or a stop indication. In the signals 4a to 4e, "G" shown in FIG. In the traffic signals 4a to 4e, "R" shown in FIG.

The track 5 is a route along which the train 6 runs, and is, for example, a rail. A train 6 runs on a track 5 . Regarding the train 6, in addition to the case where it is composed of a plurality of cars, the case where it is a single line consisting of one car is included.

Note that in the train detection system 100 shown in FIG. 1, the number of closed sections targeted for detecting the location of the train 6 is four, but this is an example and is not limited to this. In the train detection system 100, the number of closed sections for which the location of the train 6 is to be detected may be three or less, or may be five or more.

A configuration of the train detection device 1 will be described. The train detection device 1 includes a sensor connection section 11 , a detection section 12 and a control section 13 . The sensor connection unit 11 is connected to the train detection sensors 3a to 3e, and acquires signals from the train detection sensors 3a to 3e that can determine whether or not the train 6 has been detected. The sensor connection unit 11 may output the content of the acquired signal to the detection unit 12 or may output the acquired signal itself to the detection unit 12 .

The detection unit 12 sets a plurality of closed sections having the train detection sensors 3a to 3e at both ends on the track 5, and detects whether or not the train 6 is on the track in each closed section. Specifically, the detection unit 12 manages the presence of the train 6 in the closed section by the check-in/check-out logic based on the detection state of the two train detection sensors 3 installed at both ends of each closed section. can do.

The control unit 13 causes the trackside device 2 to control the signals 4a to 4e, a switch (not shown), etc., based on the determination result of the presence or absence of the train 6 in each closed section by the detection unit 12 .

Next, the operation of the train detection device 1 will be explained. FIG. 2 is a first diagram showing the state of each blocked section in the train detection system 100 according to Embodiment 1. FIG. In FIG. 2, the train detection device 1, the ground device 2, and the wiring from the ground device 2 to the signals 4a to 4e are omitted for the sake of simplicity. FIG. 2 shows a state in which all of the train detection sensors 3a-3e are operating normally. In this case, in the train detection device 1, the detection unit 12 sets the closed sections A to D using the train detection sensors 3a to 3e. Specifically, the detection unit 12 sets a closed section A with the train detection sensor 3a at one end and the train detection sensor 3b at the other end, and the closed section A with the train detection sensor 3b at one end and the train detection sensor 3c at the other end. Interval B is set. Further, the detection unit 12 sets a closed section C with the train detection sensor 3c at one end and the train detection sensor 3d at the other end, and sets a closed section D with the train detection sensor 3d at one end and the train detection sensor 3e at the other end. set.

For example, when the train detection sensor 3 is an axle detection sensor, the detection unit 12 detects the number of axles of the train 6 entering the block section and the number of axles of the train 6 exiting the block section at the train detection sensors 3 at both ends of the block section. If the number of axles is the same as the number of axles in the block section, it is determined that the train 6 is not on the line in the block section. When the number of axles of the train 6 that has entered the blocked section is greater than the number of axles of the train 6 that has exited the blocked section, the detection unit 12 determines that the train 6 is in the blocked section. do.

Further, when the train detection sensor 3 is a laser, the detection unit 12 detects the entry of the train 6 into the blocked section with one of the train detection sensors 3 at both ends of the blocked section, and detects the other train. When the sensor 3 detects that the train 6 has left the blocked section, it is determined that the train 6 is not present in the blocked section. The detection unit 12 detects the entry of the train 6 into the blocked section with one of the train detection sensors 3, and when the exit of the train 6 from the blocked section is not detected with the other train detection sensor 3, It is determined that the train 6 is on the line.

Further, when the train detection sensor 3 is a ground coil, the detection unit 12 detects the entry of the train 6 into the blocked section with one of the train detection sensors 3 at both ends of the blocked section, and detects the entry of the train 6 into the blocked section. When the detection sensor 3 detects the exit of the train 6 from the closed section, it is determined that the train 6 is not present in the closed section. The detection unit 12 detects the entry of the train 6 into the blocked section with one of the train detection sensors 3, and when the exit of the train 6 from the blocked section is not detected with the other train detection sensor 3, It is determined that the train 6 is on the line.

In the example of FIG. 2, the detection unit 12 detects that the train 6 is in the blocked section D, so the control unit 13 and the wayside device 2 are controlled so that the following train does not enter the blocked section D. The signal 4d is set to the stop indication via.

Next, it is assumed that the train detection sensor 3c fails from the state shown in FIG. FIG. 3 is a second diagram showing the state of each blocked section in the train detection system 100 according to the first embodiment. In FIG. 3, the train detection device 1, the ground device 2, and the wiring from the ground device 2 to the signals 4a to 4e are omitted for the sake of simplicity. FIG. 3 shows the state immediately after the train detection sensor 3c fails. In the train detection device 1, the detection unit 12 receives from the train detection sensor 3, for example, either a signal indicating the state when the train 6 is not detected or a signal indicating the state when the train 6 is detected. is obtained, it can be determined that the train detection sensor 3 is operating normally. That is, when the detection unit 12 has not acquired from the train detection sensor 3 either the signal indicating the state when the train 6 is not detected or the signal indicating the state when the train 6 is detected, It is determined that the train detection sensor 3 has failed. When the detection unit 12 periodically transmits a signal indicating that the train detection sensor 3 is operating normally, the detection unit 12 determines that the train detection sensor 3 has failed when the signal cannot be received. can be done. Further, when the train detection sensor 3 is composed of an on-board coil mounted on the train 6 and a ground coil installed on the ground, if the train 6 cannot acquire a signal from the ground coil at a prescribed position, the train detection The device 1 may be notified that the ground coil, which is part of the train detection sensor 3, is out of order by means of wireless communication or the like. Note that the method by which the detection unit 12 determines the failure of the train detection sensor 3 is not limited to these, and other methods may be used.

When the train detection sensor 3c fails, the detection unit 12 manages the presence of the train 6 in the closed section B having the train detection sensor 3c as the other end and the closed section C having the train detection sensor 3c as one end. can't In such a case, applying the fail-safe principle, the detection unit 12 determines that the train 6 is on the closed section B and C, and controls the control unit 13 so that the following train does not enter the closed section B. and through the ground equipment 2, the signal 4b is set to the stop indication. The train detection system 100 cannot restart the operation of the train 6 in the state shown in FIG.

Therefore, in the present embodiment, when the detection unit 12 detects a failure of the train detection sensor 3, the other train detection sensors 3 operating in two closed sections bounded by the failed train detection sensor 3 are detected. is used to set a new closed section. FIG. 4 is a third diagram showing the state of each blocked section in the train detection system 100 according to the first embodiment. In FIG. 4, the train detection device 1, the ground device 2, and the wiring from the ground device 2 to the signals 4a to 4e are omitted for the sake of simplicity. FIG. 4 shows a state in which the detection unit 12 has set a new closed section Z by merging the closed sections B and C. As shown in FIG. Specifically, the detection unit 12 cancels the setting of the closed sections B and C, and newly sets a closed section Z having the train detection sensor 3b as one end and the train detection sensor 3d as the other end. When the train detection sensor 3 is an axle detection sensor, the detection unit 12 uses the number of axles counted by the train detection sensor 3b and the number of axles counted by the train detection sensor 3d to detect the number of trains 6 in the closed section Z. It is possible to determine the presence or absence of the train. As a result, the train detection device 1 can determine the location of the train 6 in the closed section provided on the track 5, so that the location of the train 6 can be continuously detected while avoiding a situation in which the operation of the train 6 is interrupted. can be detected.

The train detection system 100 can continue the operation of the train 6 even when the detection unit 12 of the train detection device 1 detects a failure of the train detection sensor 3, but it is necessary to repair or replace the failed train detection sensor 3. There is Therefore, when detecting a failure of the train detection sensor 3, the detection unit 12 of the train detection device 1 may notify the user that the train detection sensor 3 has failed. Regarding the notification method, the detection unit 12 of the train detection device 1 may use a display unit such as an LCD (Liquid Crystal Display) (not shown) to display that the train detection sensor 3 has failed, or an LED (Light Emitting Diode) or the like may emit light to notify the occurrence of an abnormality, or a speaker (not shown) may be used to issue an alarm. Thereby, the user can grasp that the train detection sensor 3 has failed, and can repair or replace the train detection sensor 3 in a time zone when the train 6 does not pass after the operation of the train 6 on the day ends.

The operation of the train detection device 1 will be explained using a flowchart. FIG. 5 is a flow chart showing the operation of the train detection device 1 according to the first embodiment. In the train detection device 1, the sensor connection unit 11 acquires a signal indicating a detection state or the like from each train detection sensor 3 (step S1). The detection unit 12 uses the signal acquired by the sensor connection unit 11 to determine whether or not each train detection sensor 3 is faulty (step S2). When there is no failure in the train detection sensors 3 (step S2: No), the detection unit 12 sets a closed section using all preset train detection sensors 3 (step S3). If there is a failure in the train detection sensor 3 (step S2: Yes), the detection unit 12 does not use the failed train detection sensor 3, and sets a closed section using another train detection sensor 3 (step S4). . Specifically, the detection unit 12 sets a first closed section with a first train detection sensor at one end and a second train detection sensor at the other end, and a third closed section with a second train detection sensor at one end. When stopping the use of the second train detection sensor when setting the second closed section with the train detection sensor of the other end, the first train detection sensor is one end and the third train detection sensor A third closed section is set as the other end. In the examples of FIGS. 2 to 4, the blocked section B is the first blocked section, the blocked section C is the second blocked section, and the blocked section Z is the third blocked section. The detection unit 12 notifies the user that a failure of the train detection sensor 3 has been detected (step S5). The train detection device 1 periodically and repeatedly performs the operation of the flowchart shown in FIG.

In addition, although this Embodiment demonstrated the case where the detection part 12 of the train detection apparatus 1 detected the failure of the train detection sensor 3, the use of the train detection apparatus 1 is not limited to this. The detection unit 12 of the train detection device 1 can perform the same operation as described above even when the train detection sensor 3 that cannot be used due to replacement or maintenance of the train detection sensor 3 is known in advance. In addition, the train detection device 1 uses all the train detection sensors 3 to manage the presence of the trains 6 in short closed sections during times when the number of trains 6 in operation is large, such as during morning and evening rush hours. It can also be applied to the use of managing the presence of trains 6 in a closed section longer than during rush hours by thinning out the train detection sensors 3 in a time period when the number of trains is small. The train detection device 1 can reduce the processing load by reducing the number of closed sections. In addition, the train detection device 1 detects whether or not a train 6 is present in a station on a local line with a small number of trains 6 in operation, and whether or not a train 6 is present in a single-track section between stations. It is also applicable to applications such as

Further, in the present embodiment, the case where the train detection sensor 3 is provided at the boundary of each block section has been described, but ATC / TD (Automatic Train Control / Train Detection) using a loop line, that is, an automatic train control device and a train It is also applicable to systems with detection devices. FIG. 6 is a diagram showing the state of each blocked section when the train detection device 1 according to Embodiment 1 is applied to a system including an automatic train control device and a train detection device. Even if the loop line of the blocked section C becomes unusable due to a failure or the like, the train detection device 1 uses the original blocked sections B, C, and D because the loop lines of the blocked sections B and D can be used. , a new closed section Y can be set. As a result, the train detection device 1 can determine the presence of the train 6 in the closed section provided on the track 5, as in the case described above, so that the operation of the train 6 can be avoided while continuing to operate. The location of the train 6 can be detected.

Here, when the train detection device 1 detects a failure of the train detection sensor 3, it is assumed that one or more trains 6 are on the line in the closed section bounded by the failed train detection sensor 3. . In such a case, even if the user who receives the notification from the train detection device 1 that the train detection sensor 3 has failed goes to the site and guides the train 6 to exit from the newly set closed section. good. In addition, the user who receives the notification from the train detection device 1 that the train detection sensor 3 has failed can check whether the train 6 can be normally detected in the newly set blocked section by using the train for confirmation. You can check. Similarly, when the train detection sensor 3 is restored by repair or replacement, the user can determine whether the train 6 can be normally detected in the blocked section returned to the original setting of the blocked section by the train detection device 1. Confirmation may be performed using a confirmation train.

Next, the hardware configuration of the train detection device 1 will be explained. In the train detection device 1 , the sensor connection section 11 is an interface circuit capable of communicating with the train detection sensor 3 . The detection unit 12 and the control unit 13 are implemented by a processing circuit. The processing circuitry may be a processor and memory executing programs stored in the memory, or may be dedicated hardware.

FIG. 7 is a diagram showing an example of a case where a processing circuit included in the train detection device 1 according to Embodiment 1 is configured with a processor and a memory. When the processing circuit is composed of the processor 91 and the memory 92, each function of the processing circuit of the train detection device 1 is implemented by software, firmware, or a combination of software and firmware. Software or firmware is written as a program and stored in memory 92 . In the processing circuit, each function is realized by the processor 91 reading and executing the program stored in the memory 92 . That is, the processing circuit comprises a memory 92 for storing a program that results in the processing of the train detection device 1 being executed. It can also be said that these programs cause a computer to execute the procedures and methods of the train detection device 1 .

Here, the processor 91 may be a CPU (Central Processing Unit), a processing device, an arithmetic device, a microprocessor, a microcomputer, or a DSP (Digital Signal Processor). The memory 92 includes non-volatile or volatile memory such as RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable ROM), EEPROM (registered trademark) (Electrically EPROM). semiconductor memories, magnetic discs, flexible discs, optical discs, compact discs, mini discs, or DVDs (Digital Versatile Discs).

FIG. 8 is a diagram showing an example of a case where the processing circuit included in the train detection device 1 according to Embodiment 1 is configured with dedicated hardware. When the processing circuit is composed of dedicated hardware, the processing circuit 93 shown in FIG. 8 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 is applicable. Each function of the train detection device 1 may be realized by the processing circuit 93 for each function, or each function may be collectively realized by the processing circuit 93 .

It should be noted that each function of the train detection device 1 may be partly realized by dedicated hardware and partly realized by software or firmware. Thus, the processing circuitry may implement each of the functions described above through dedicated hardware, software, firmware, or a combination thereof.

As described above, according to the present embodiment, when a failure of the train detection sensor 3 is detected, the train detection device 1 merges the closed section having the failed train detection sensor 3 as a boundary to create a new closed section. I decided to set an interval. As a result, the train detection device 1 can detect the location of the train 6 while avoiding a situation in which the operation of the train 6 is interrupted and without increasing the installation and maintenance costs.

It should be noted that the train detection device 1 of this embodiment can also be applied to fields other than railways. For example, it can be applied to managing the position of a moving object traveling on a prescribed route. A mobile body that travels on a prescribed route may be, for example, a collection and delivery vehicle for physical distribution that moves within a warehouse, a bus that tours a specific area, or the like.

Embodiment 2.
In Embodiment 1, one train detection device 1 detects the presence of trains 6 in each closed section set on the track 5 . However, when the operation route of the train 6 is long, if one train detection device 1 detects the train 6 in all the blocked sections set on the track 5 of the operation route of the train 6, the number of blocked sections is will increase and the processing load will increase. In Embodiment 2, a case where a plurality of train detection devices cooperate to detect the presence of a train 6 will be described.

FIG. 9 is a diagram showing a configuration example of a train detection system 100a according to Embodiment 2. As shown in FIG. The train detection system 100a includes train detection devices 7a to 7c, ground devices 2a to 2c, train detection sensors 3a to 3m, signals 4a to 4m, a track 5, and a train 6. In the train detection system 100a, the track 5 on which the train 6 runs is provided with closed sections A to L.

The train detection device 7a is a first train detection device that detects whether or not a train 6 is on the line in a first jurisdiction range 71 consisting of a plurality of closed sections AD. The train detection device 7b is a second train detection device that detects whether or not a train 6 is on the track in a second jurisdiction range 72 consisting of a plurality of closed sections E to H. The train detection device 7c is a third train detection device that detects whether or not a train 6 is on the line in a third jurisdiction range 73 consisting of a plurality of closed sections I to L. Detailed configurations and operations of the train detection devices 7a to 7c will be described later. In the following description, the train detection devices 7a to 7c may be referred to as the train detection device 7 when not distinguished.

The ground equipment 2a controls the traffic signals 4a to 4e, switches (not shown), etc., based on the determination result of the presence or absence of the train 6 in each closed section in the jurisdiction range 71 of the train detection device 7a. The ground device 2b controls the traffic signals 4e to 4i, switches (not shown), etc., based on the determination result of the presence or absence of the train 6 in each closed section in the jurisdiction range 72 of the train detection device 7b. The ground equipment 2c controls the traffic signals 4i to 4m, switches (not shown), etc., based on the determination result of the presence or absence of the train 6 in each closed section in the jurisdiction range 73 of the train detection device 7c. The ground devices 2a-2c are, for example, interlocking devices, blocking devices, and the like. In FIG. 9, in order to simplify the description, the wiring from the ground equipment 2a to the traffic signals 4a to 4e, the wiring from the ground equipment 2b to the traffic signals 4e to 4i, and the wiring from the ground equipment 2c to the traffic signals 4i to 4m are omitted.

The train detection sensors 3a to 3m are installed on the track 5 on which the train 6 runs, and are sensors for detecting the passage of the train 6, that is, the train 6. The train detection sensors 3f to 3m have the same configuration as the train detection sensors 3a to 3e described above. In the following description, the train detection sensors 3a to 3m may be referred to as the train detection sensor 3 when not distinguished.

The traffic lights 4a to 4m are installed at the boundary of each blocked section. The traffic signals 4a to 4e indicate the progress or stop of the train 6 under the control of the ground equipment 2a. The traffic lights 4e to 4i give a progress indication or a stop indication to the train 6 under the control of the ground equipment 2b. The traffic signals 4i to 4m indicate the progress or stop of the train 6 under the control of the ground equipment 2c.

In addition, in the train detection system 100a shown in FIG. 9, although the number of the train detection apparatuses 7 is three, it is an example and is not limited to this. In the train detection system 100a, the number of train detection devices 7 may be four or more.

The configuration of the train detection devices 7a to 7c will be described. Train detection devices 7a to 7c of the second embodiment shown in FIG. 9 are obtained by adding a communication unit 14 to the train detection device 1 of the first embodiment shown in FIG. The communication unit 14 communicates with other train detection devices 7 . The train detection devices 7a to 7c can transmit and receive signals to and from other train detection devices 7 via the communication unit 14. FIG. In addition, each of the train detection devices 7a to 7c periodically transmits/receives a signal indicating that it is operating normally via the communication unit 14. It should be possible to determine whether it is working or not.

Next, the operation of the train detection devices 7a to 7c will be explained. The operation when the train detection devices 7a to 7c are normal is the same as the operation of the train detection device 1 of the first embodiment. In the train detection device 7a, the detection unit 12 sets the closed sections A to D using the train detection sensors 3a to 3e. In the train detection device 7b, the detection unit 12 sets the closed sections E to H using the train detection sensors 3e to 3i. In the train detection device 7c, the detection unit 12 sets the closed sections I to L using the train detection sensors 3i to 3m.

Next, it is assumed that the train detection device 7b fails from the state shown in FIG. FIG. 10 is a first diagram showing the state of each blocked section in the train detection system 100a according to the second embodiment. FIG. 10 shows the state immediately after the train detection device 7b fails. When the train detection device 7b fails, the train detection system 100a cannot manage the presence of the train 6 in the closed sections E to H of the jurisdiction range 72. FIG. In such a case, applying the fail-safe principle, the other train detection devices 7a and 7c consider that the train 6 is on the closed section EH of the area 72 under their jurisdiction. In the train detection system 100a, the operation of the train 6 cannot be restarted unless the train detection device 7b is repaired or replaced so that the train detection device 7b can operate normally.

Therefore, in the present embodiment, the train detection device 7a in the jurisdiction range 71 adjacent to the jurisdiction range 72 of the train detection device 7b, or the train detection device 7c in the jurisdiction range 73 adjacent to the jurisdiction range 72 of the train detection device 7b, A new closed section is set using the jurisdiction range 72 of the train detection device 7b. FIG. 11 is a second diagram showing the state of each blocked section in the train detection system 100a according to the second embodiment. Here, as an example, a case where the train detection device 7a sets a new closed section X will be described. FIG. 11 shows a state in which the train detection device 7a has set a new closed section X by merging the closed sections D to H. As shown in FIG. Specifically, the detection unit 12 of the train detection device 7a cancels the setting of the closed section D and newly sets the closed section X having the train detection sensor 3d as one end and the train detection sensor 3i as the other end. Further, the detector 12 of the train detection device 7a acquires a signal from the train detection sensor 3i from the train detection device 7c via the communication unit 14 . When the train detection sensor 3 is an axle detection sensor, the detection unit 12 of the train detection device 7a detects the blocked section by using the number of axles counted by the train detection sensor 3d and the number of axles counted by the train detection sensor 3i. At X, it is possible to determine whether or not the train 6 is on the track. As a result, since the train detection device 7a can determine the presence of the train 6 in the blocked section provided on the track 5, it is possible to avoid a situation in which the operation of the train 6 is interrupted and to continuously detect the position of the train 6. can be detected.

The train detection system 100a can continue the operation of the train 6 even when the train detection devices 7a and 7c detect a failure of the train detection device 7b, but it is necessary to repair or replace the failed train detection device 7b. . Therefore, when detecting a failure of the train detection device 7b, the detection units 12 of the train detection devices 7a and 7c may notify the user that the train detection device 7b has failed. The notification method may be the same as the notification method when the detection unit 12 of the train detection device 1 detects a failure of the train detection sensor 3 in the first embodiment. As a result, the user can grasp that the train detection device 7b has failed, and can repair or replace the train detection device 7b in a time zone when the train 6 does not pass after the operation of the train 6 on the day ends. It may be determined in advance which of the train detection devices 7a and 7c sets the closed section including the jurisdiction range 72 of the train detection device 7b when the train detection device 7b fails. For example, the train detection device 7 on the upstream side or the downstream side of the failed train detection device 7 on the line sets the closed section including the jurisdiction range of the failed train detection device 7 .

The operation of the train detection devices 7a to 7c when a failure of another train detection device 7 is detected will be described using a flow chart. FIG. 12 is a flow chart showing the operation of the train detection devices 7a-7c according to the second embodiment. In the train detection devices 7a to 7c, the detection unit 12 communicates with the other train detection devices 7 via the communication unit 14, and determines whether the other train detection devices 7 are operating normally ( step S11). When the other train detection device 7 is operating normally (step S11: Yes), the detection unit 12 sets a blockage section within the jurisdiction range of its own device (step S12), and the train 6 is on the line in each blockage section. It is determined whether or not (step S13). If the other train detection device 7 is not operating normally (step S11: No), the detection unit 12 determines whether or not to set a closed section including the jurisdiction range of the failed train detection device 7. (step S14). If the self-device does not set a closed section including the jurisdiction range of the failed train detection device 7 (step S14: No), the detection unit 12 sets a closed section within the jurisdiction range of the self-device (step S12 ), it is determined whether or not the train 6 is on the line in each closed section (step S13). When the device itself sets a closed section including the jurisdiction range of the failed train detection device 7 (step S14: Yes), the detection unit 12 determines the jurisdiction range of the device itself and the jurisdiction range of the failed train detection device 7. (step S15), and it is determined whether or not the train 6 is on the line in each block section (step S16).

Thus, when stopping the use of the train detection device 7b, the train detection device 7a acquires the detection information of the train detection sensor 3i at the boundary between the jurisdiction range 72 and the jurisdiction range 73 from the train detection device 7c, and It is determined whether or not the train 6 is on the line for the closed section including the range 72 .

As in the case of the first embodiment, the train detection system 100a operates in the same manner as described above even when a train detection device 7 that cannot be used due to replacement or maintenance of the train detection device 7 is known in advance. be able to.

As described above, according to the present embodiment, in the train detection system 100a provided with a plurality of train detection devices 7, the train detection device 7 that has detected a failure in another train detection device 7 will A new closed section is set using the closed section under the jurisdiction of the other train detection device 7. As a result, the train detection device 7 can detect the location of the train 6 while avoiding a situation in which the operation of the train 6 is interrupted and without increasing installation and maintenance costs.

The configurations shown in the above embodiments are only examples, and can be combined with other known techniques, or can be combined with other embodiments, without departing from the scope of the invention. It is also possible to omit or change part of the configuration.

1, 7a to 7c train detection device, 2, 2a to 2c ground device, 3a to 3m train detection sensor, 4a to 4m signal, 5 track, 6 train, 11 sensor connection part, 12 detection part, 13 control part, 14 communication Part, 71-73 Jurisdiction, 100, 100a Train detection system, A-L Blocked section.

Claims (8)

a sensor connection unit connected to a plurality of train detection sensors installed on a track on which a train runs and capable of detecting the train, and acquiring from the plurality of train detection sensors signals capable of determining whether or not the train has been detected; ,
A detection unit that sets a plurality of closed sections with the train detection sensor at both ends on the track and detects whether the train is on the track in each closed section;
with
The detection unit sets a first closed section with a first train detection sensor at one end and a second train detection sensor at the other end, and a third train detection sensor with the second train detection sensor at one end. When the use of the second train detection sensor is stopped when the second closed section with the other end is set, the first train detection sensor is one end and the third train detection sensor is the other Set a third closed section to be the end ,
In a first time period when the number of trains in operation is equal to or greater than a specified number, all the train detection sensors are used to set the closed section, and in a second time period other than the first time period, the Setting the closed section using a number of the train detection sensors that is less than the number of the train detection sensors used in the first time period;
A train detection device characterized by: The detection unit notifies the user to stop using the second train detection sensor;
The train detection device according to claim 1, characterized in that: The plurality of train detection sensors are axle detection sensors that count the number of axles of a passing train,
In the train detection sensors at both ends of the blocked section, when the number of axles of the train entering the blocked section is the same as the number of axles of the train exiting the blocked section, the detection unit detects that the train is not in the blocked section. It is determined that the train is not on the line, and if the number of axles of the train that entered the block section is greater than the number of axles of the train that exited the block section, it is determined that the train is on the line of the block section. do,
The train detection device according to claim 1 or 2, characterized in that: The plurality of train detection sensors are lasers that detect the train,
The detection unit detects the entry of the train into the blocked section with one of the train detection sensors at both ends of the blocked section, and the exit of the train from the blocked section with the other train detection sensor. is detected, it is determined that there is no train in the block section, one train detection sensor detects the entry of the train into the block section, and the other train detection sensor detects the above from the block section. If the exit of the train is not detected, it is determined that the train is on the block section.
The train detection device according to claim 1 or 2, characterized in that: The plurality of train detection sensors are beacons that detect the train by communicating with onboard coils mounted on the train,
The detection unit detects the entry of the train into the blocked section with one of the train detection sensors at both ends of the blocked section, and the exit of the train from the blocked section with the other train detection sensor. is detected, it is determined that there is no train in the block section, one train detection sensor detects the entry of the train into the block section, and the other train detection sensor detects the above from the block section. If the exit of the train is not detected, it is determined that the train is on the block section.
The train detection device according to claim 1 or 2, characterized in that: A train detection system comprising a first train detection device, a second train detection device, and a third train detection device, which are the train detection devices according to any one of claims 1 to 5,
The first train detection device detects whether the train is on the line in a first jurisdictional range consisting of a plurality of closed sections,
The second train detection device detects whether the train is on the line in a second jurisdictional range consisting of a plurality of closed sections different from the first jurisdictional range,
The third train detection device detects whether the train is on the line in a third jurisdictional range consisting of a plurality of closed sections different from the first jurisdictional range and the second jurisdictional range,
When stopping the use of the second train detection device, the first train detection device is at the boundary of the second jurisdictional range and the third jurisdictional range from the third train detection device, Acquire detection information of a train detection sensor capable of detecting the train, and determine whether the train is on the line for a closed section including the second jurisdiction range,
A train detection system characterized by: A sensor connection unit is connected to a plurality of train detection sensors installed on a track on which a train runs and capable of detecting the train, and acquires a signal capable of determining whether or not the train has been detected from the plurality of train detection sensors. a first step of
a second step in which the detection unit sets a plurality of blocked sections having the train detection sensor at both ends on the track and detects whether the train is on the track in each blocked section;
including
In the second step, the detection unit sets a first closed section having the first train detection sensor at one end and the second train detection sensor at the other end, and the second train detection sensor at one end. When the use of the second train detection sensor is stopped when the second closed section with the third train detection sensor as the other end is set, the first train detection sensor is used as one end and the first Set a third closed section with the train detection sensor of 3 as the other end,
In a first time period when the number of trains in operation is equal to or greater than a specified number, all the train detection sensors are used to set the closed section, and in a second time period other than the first time period, the Setting the closed section using a number of the train detection sensors that is less than the number of the train detection sensors used in the first time period;
A train detection method characterized by: In the second step, the detection unit notifies the user to stop using the second train detection sensor.
The train detection method according to claim 7, characterized by:

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