JP2005047409A - Train detection system and train approach advance detection method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect a backward advancement of a train from each block which is a closed section of train travel.
SOLUTION: The detection processing device 1 eliminates the reception of signals from the onboard responders Va and Vb at the start side end point or end point side end of the train 3 by the interrogator Q that detects the train approach to the block B. Within a first predetermined period of time, it is detected that the signal from the ground responder G that has not been received is restored, and the train advancing from the block B behind the block is detected. The received interrogator Q detects the signal from the vehicle end responders Va and Vb at the end of the train at the end of the train or the start of the train, and then the second predetermined until the signal is received again. It is detected that the signal from the ground responder G that has lost the reception is recovered within the third predetermined time after the time has elapsed and the reception of the signals from the onboard responders Va and Vb is lost. The train from block B goes backwards This is to detect the exit.
[Selection] Figure 1

Description

  The present invention relates to a train detection system that detects the entrance and advance of a train to each block, which is a closed section of train travel, based on the communication state of communication means installed on the ground and on the vehicle. The present invention relates to a train detection system and a train approach advance detection method that can also detect a backward advancement of a train.

  Conventional train detection systems that perform check-in / check-out point detection at the boundaries of each block of train travel are installed near the rails at the boundaries of each block, which is the closed section of train travel, An interrogator that transmits and receives a response signal, and is placed opposite the interrogator so that the communication area is blocked by the train body when passing through the train, and receives the interrogation signal and includes its own unique information. A ground responder that transmits a response signal, and an end point side end part and a start side end part of the train, or one end point end part and a start side end part of each vehicle constituting the train, An on-board responder that receives an interrogation signal and transmits a response signal including the specific information of the train and installation position information, and an on-board responder or an on-board responder received by the interrogator at the boundary of each block Takes in the answer signal train entry for each block, is made and a detecting device for detecting the advance.

  As another train detection system, it is installed near the rail at the boundary of each block, which is a closed section of train travel, and transmits an interrogation signal and receives a response signal, A ground responder that is installed opposite to the interrogator so that the communication area is cut off by the vehicle body, receives the interrogation signal and transmits a response signal including its own unique information, and an origin side end of the train An on-board transponder that is mounted at two intervals at a predetermined interval and two at an end side end portion at a predetermined interval, receives the interrogation signal and transmits a response signal including specific information of the train and installation position information. In addition, the response signal from the ground responder or on-vehicle responder received by the interrogator at the boundary of each block is captured to detect the entrance of the train to the preceding block, and to execute a plurality of detection methods of train advancement. Some of which are made and a train detector for detecting a train advancement from the rear of the block (e.g., see Patent Document 1).

  However, in the train detection system of the first prior art, the on-board responder is the end point side end portion and the start point side end portion of the train, or the end point side end portion and the start point side end portion of each vehicle constituting the train. Since only one on-board responder was installed, it was impossible to detect the traveling direction of the train, and it was not possible to detect the advance due to the train retreating in a certain block.

On the other hand, in the train detection system described in Patent Document 1, two onboard responders are mounted at a predetermined interval at the start side end of the train and two at a predetermined interval at the end side end of the train. The traveling direction of the train can be detected based on the order of reception of the response signals from the on-board responder, and the advance due to the train retreating in a certain block can be detected. However, in this case, two on-board responders are provided at predetermined intervals at the start side end and end point end of the train, or at predetermined intervals at the start side end and end point end of each vehicle constituting the train. Therefore, the number of parts of the system increases, and the configuration of the entire system becomes complicated. In addition, the entire system is expensive.
JP 2002-255032 A (page 5, FIG. 1)

  The problem to be solved by the present invention is that it is possible to detect a backward advancement of a train from a block with a small number of parts.

  The train detection system according to the present invention includes a first communication unit installed in the vicinity of a rail at the boundary of each block that is a closed section of train travel, and the first communication unit can communicate with the first communication unit, and trains are passed when the train passes. A second communication means installed opposite to the first communication means so that the communication area is blocked by the vehicle body, and an end side end point and a starting point of the train that can communicate with the first communication means. The third communication means mounted on the side end or one end side end and the start side end of each vehicle constituting the train, and the second or first received by the first communication means at the boundary of each block And a detection processing device for detecting the entry and advancement of a train to each block by taking in a signal from the third communication means, wherein the detection processing device is a start side or an end side of each block First communication hand at the border However, it is detected that the signal from the third communication means at the end point side end part or the start side end part of the train is received in a state in which the signal from the second communication means facing it is no longer received. Within a first predetermined time after the arrival of the train is detected, and the first communication means that has detected the train entry has received no signal from the third communication means at the start side end or the end side end of the train. , Detecting the recovery of the signal from the second communication means that has lost the reception, detecting the advance of the train from the block behind the block, and the first communication means detecting the train approach After receiving the signal from the third communication means at the end side end part or the start side end part, the reception is lost, and the second predetermined time or more has passed until the signal is received again and there is no reception. No signal received from Within et third predetermined time, it is obtained as a signal from the second communication means the reception is no longer detects the middle retraction advancement of the train from the detection to the block to recover.

  With such a configuration, by the operation of the detection processing device, reception of signals from the third communication means at the start side end point or end point side end part of the train is eliminated by the first communication means that detects the train approach to the block. Within the first predetermined time, the recovery of the signal from the second communication means that has lost its reception is detected, the progress of the train from the block behind the block is detected, and the approach of the train is detected. The first communication means receives the signal from the third communication means at the end of the train at the end of the train or the end of the start of the train, and then no longer receives the signal. In addition, within a third predetermined time after receiving no signal from the third communication means, it is detected that the signal from the second communication means that has lost the reception is recovered, and the train from the block is detected. Retreat on the way To detect.

  Moreover, the train detection system by other means is installed in the vicinity of the rail at the boundary of each block which is a closed section of train travel, has a communication area having directivity, and transmits a question signal and receives a response signal. The interrogator is installed opposite the interrogator so that the communication area is cut off by the train body when passing through the train, has a directional communication area, receives the interrogation signal, and includes its own unique information. A ground responder that transmits a response signal, and one on each of the end point side end point and start point side end part of the train, or the end point side end part and start point side end part of each vehicle constituting the train. On-board transponder that has a communication area that has the characteristics and receives the interrogation signal and transmits a response signal including the specific information of the train and the installation position information, and the ground response received by the interrogator at the boundary of each block Or a detection processing device that receives a response signal from an on-board responder and detects the entry and advancement of a train to each block, and the detection processing device includes a start side of each block or Detects that the interrogator at the end-point boundary has received a signal from the on-board responder at the end of the train or at the end of the start without receiving a signal from the ground responder facing it. Then, the entry of the train to the block is detected, and the interrogator that detects the entry of the train receives the signal from the onboard responder at the start side end point or end point side end of the train, and the first Within a predetermined time, it detects that the signal from the ground responder that has lost the reception has recovered, detects the advance of the train from the block behind the block, and trains with the interrogator that detects the train entry. End side of end or After receiving the signal from the onboard responder at the start side end, the signal is not received, and a second predetermined time or more has passed until it is received again and the signal is no longer received, and the signal from the onboard responder is received. In the third predetermined time after the disappearance of the signal, the recovery from the signal from the ground responder that has lost the reception is detected to detect the backward advancement of the train from the block.

  With such a configuration, the operation of the detection processing device causes the interrogator that has detected the train approach to the block to receive the signal from the onboard responder at the start side end or end side end of the train. In the interrogator that detects the progress of a train from a block behind the block by detecting the recovery of the signal from the ground responder that has not been received within a predetermined time of 1, and detects the train approach. After receiving the signal from the onboard responder at the end of the train or at the start of the train, the signal is no longer received, and the second predetermined time has passed until the signal is received again and no signal is received. Within a third predetermined time after the signal from the responder is lost, the recovery from the signal from the ground responder that has lost the signal is detected to detect the backward advancement of the train from the block. .

Then, the detection processing device compares the first predetermined time, the second predetermined time, and the third predetermined time for detecting the advancement or advancement of the train on the way compared to the determination time of the presence or absence of the received signal. A storage means for storing is provided.
Thus, the first predetermined time, the second predetermined time, and the third predetermined time for detecting the advance or advance of the train on the way are compared with the determination time of the presence or absence of the received signal, Smoothly detect progress advancement or backward advancement.

The train approach advance detection method according to the present invention detects that the interrogator at the boundary of the start side or end point of each block, which is a closed section of train travel, no longer receives a response signal from the ground responder facing it. And detecting the approach of the train to the block, and the on-board responder at the end of the train at the end of the train or at the start of the train in the state where no response signal is received from the ground responder. The vehicle at the start side end or the end side end of the train with the interrogator that has detected the train entry and the step of determining the train that has entered the block based on the unique information included in the response signal Within a first predetermined time after receiving no response signal from the upper responder, it is detected that the response signal from the ground responder from which the reception has been lost is recovered, and the sequence from the block following the block is detected. A step of detecting the progression advancement, and performs.
Thereby, it becomes possible to detect the advance of the train from the block behind the block.

In addition, in the train approach advance detection method by other means, the interrogator at the boundary of the start point or end point side of each block, which is the block section of train travel, no longer receives the response signal from the ground responder facing it. And detecting the approach of the train to the block and the reception of the response signal from the ground responder on the vehicle at the end side or the start side end of the train A step of receiving a response signal from the responder and determining a train that has entered the block based on the unique information included in the response signal; After receiving the response signal from the on-board responder, the second predetermined time or more elapses until the signal is received again and no reception is received, and the response signal is received from the on-board responder. Lost Within a third predetermined time after, and performs the steps of detecting a train in the middle retraction advances from the detection to the block to recover the response signal from the ground responder that the reception is lost, the.
As a result, it is possible to detect a backward advancement of the train from the block.

  According to the train detection system according to claim 1, the detection processing device takes in the signal from the second or third communication means received by the first communication means at the boundary of each block and enters the train into each block, It is possible to detect advancing, detect advancing advancement of a train from a block behind the block, and detect a backward advancing of the train from the block. Therefore, as in the prior art, there are two third communication means at predetermined intervals at the start side end and end point end of the train, or at the start side end and end point end of each vehicle constituting the train. Without mounting two at intervals, the number of system parts can be reduced, and the configuration of the entire system can be simplified. In addition, the cost of the system can be reduced.

  Moreover, according to the train detection system according to claim 2, the detection processing device takes in a signal from the ground responder or on-board responder received by the interrogator at the boundary of each block, and the train enters each block. Detecting advancing, it is possible to detect advancing and advancing of a train from a block behind the block, and to detect a backward advancing of the train from the block. Therefore, as in the prior art, there are two on-board responders at predetermined intervals at the start side end and end point end of the train, or predetermined at the start side end point and end point side end of each vehicle constituting the train. Without mounting two at intervals, the number of system parts can be reduced, and the configuration of the entire system can be simplified. In addition, the cost of the system can be reduced.

  Furthermore, according to the invention which concerns on Claim 3, compared with the determination time of the presence or absence of a received signal, a detection processing apparatus is the 1st predetermined time and 2nd for detecting the advance advance of a train, or a middle reverse advance By providing storage means for storing the predetermined time and the third predetermined time, the first predetermined time, the second predetermined time and the third predetermined time for detecting the advance or advance of the train on the way Comparing the predetermined time with the determination time for the presence / absence of a received signal, it is possible to smoothly detect the advance or advance of the train.

  Further, according to the train approach advance detection method according to claim 4, the interrogator at the boundary of the starting point side or the ending point side of each block that is a closed section of the train traveling receives the response signal from the ground responder facing it. The vehicle at the end side or the start side end of the train is detected in the state where the train has entered the block and the reception of the response signal from the ground responder is not received. The response signal from the upper responder is received, the train that has entered the block is determined based on the unique information included in the response signal, and the start side end or end side end of the train is detected by the interrogator that has detected the train entry. Within the first predetermined time after the reception of the response signal from the on-board responder is lost, the recovery of the response signal from the ground responder that has lost the reception is detected, and the block behind the block is detected. Train progress By detecting, it is possible to detect the train traveling advancement from the block from the rear of the block by a simple algorithm.

  Furthermore, according to the train approach advance detection method according to claim 5, the interrogator at the boundary of the starting point side or the ending point side of each block that is a closed section of the train traveling receives the response signal from the ground responder facing it. The vehicle at the end side or the start side end of the train is detected in the state where the train has entered the block and the reception of the response signal from the ground responder is not received. The response signal from the upper responder is received, the train that has entered the block is determined by the unique information included in the response signal, and the end point side end point or the start side end portion of the train is detected by the interrogator that has detected the train entry. After receiving the response signal from the on-board responder, the reception is lost, and the second predetermined time or more elapses until it is received again and the reception is lost, and no response signal is received from the on-board responder. The third predetermined By detecting the recovery of the response signal from the ground responder that has lost the reception within a short time, and detecting the advancing and retreating of the train from the block, Retreat advancement can be detected.

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
FIG. 1 is a system configuration diagram showing an embodiment of a train detection system according to the present invention. This train detection system detects the entry and advance of a train to each block, which is a closed section of train travel. The upper responders Va and Vb and the detection processing device 1 are provided.

  The interrogator Q transmits an interrogation signal to a later-described ground responder G or on-vehicle responders Va and Vb, and receives response signals from the ground responder G or on-vehicle responders Va and Vb. Each block B (B1 to B4), which is a first communication means, is configured to transmit and receive radio waves or light having a directional communication area and is a closed section of the train 3 traveling on the rail 2. It is installed in the vicinity of the rail 2 at the boundary. Note that the rail 2 on which the train 3 travels is not limited to two iron tracks, and may be a track that can travel with other rubber tires, for example.

  For example, in FIG. 1, the left side of the rail 2 is the starting point side of the train travel, the right side is the end point side of the train traveling, and the first block B1, the second block at predetermined intervals from the starting point side to the end point side Assuming that B2, the third block B3, the fourth block B4,... Are set, the interrogator Q1 is at the left end of the block B1, the interrogator Q2 is at the boundary between the block B1 and the block B2, and the block B2 is a block. An interrogator Q3 is installed at the boundary of B3, and an interrogator Q4 is installed at the boundary of the blocks B3 and B4.

  The ground responder G serves as a second communication means for receiving the interrogation signal transmitted from the interrogator Q and transmitting a response signal including specific information indicating that the self is a ground responder. A radio wave or light having a communication area having directivity is transmitted and received, and each ground response is opposed to each of the interrogators Q1 to Q4 so that the communication area is blocked by the vehicle body of the train 3 when passing through the train. Devices G1 to G4 are installed. The interrogators Q1 to Q4 and the ground responders G1 to G4 are always in communication, and the train 3 traveling on the rail 2 passes between the interrogator Q and the ground responder G. Is disposed at a position where communication between the two is interrupted.

  The on-board responders Va and Vb receive the interrogation signal transmitted from the interrogator Q and transmit a response signal including specific information indicating the train 3 on which the vehicle is mounted and the mounting position information. As shown in FIG. 1, Va is provided at the end of the train 3 on the end side, as shown in FIG. One Vb is mounted on the part. Although illustration is omitted, basically, it is desirable that Va is mounted on the end side end of each vehicle constituting the train 3 and one Vb is mounted on the start side end. In this case, in a state where the interrogator Q does not receive a response signal from the ground responder G facing each other at the connecting portion of each vehicle of the train 3, as shown in FIG. It is only necessary to mount Va and Vb one by one at the starting side end. And when the train 3 travels on the rail 2 and passes the positions of the interrogators Q1 to Q4, the on-board responders Va and Vb communicate with the interrogators Q1 to Q4. Note that two on-board responders Va and Vb may be mounted on the end point side end portion and the start point side end portion of the train 3 as a redundant configuration corresponding to the occurrence of a failure.

  Further, the detection processing device 1 receives the response signals from the ground responders G1 to G4 or the onboard responders Va and Vb received by the interrogators Q1 to Q4 at the boundaries of the blocks B1, B2, B3, B4,. This is used to detect the entry and advance of the train 3 to each block B, and is provided in common to a plurality of interrogators Q1 to Q4. For example, it is installed at any station in the line district. . And the detection signal of the approach and advance of the train 3 to each block B from this detection processing device 1 is sent to a predetermined external device 4.

  FIG. 2 is a block diagram showing the internal configuration of the interrogator Q, the ground responder G, the on-board responders Va and Vb, and the detection processing device 1. First, the interrogator Q transmits a response signal from the transmitter 5 for transmitting an interrogation signal to the ground responder G or on-board responders Va and Vb, and the above-mentioned ground responder G or on-board responders Va and Vb. A receiving unit 6 for receiving, a transmitting unit 7 for transmitting a response signal received by the receiving unit 6 to the detection processing device 1, and a control unit (for example, composed of a CPU) 8 for controlling the operation thereof are provided.

  Next, the ground responder G includes a receiving unit 9 that receives the interrogation signal from the interrogator Q and a transmission unit 10 that transmits a response signal to the interrogation signal. The onboard responders Va and Vb mounted on the train 3 (only Va on the end side on the end side is shown in FIG. 2) are also receiving units 11 that receive the interrogation signal from the interrogator Q. And a transmission unit 12 that transmits a response signal to the interrogation signal.

  Furthermore, the detection processing device 1 uses the receiving unit 13 that receives the response signal from the ground responder G or the on-board responders Va and Vb sent from the transmitting unit 7 of the interrogator Q, and the captured response signal. A control unit (for example, composed of a CPU) 14 for detecting the entry and advance of the train 3 to the block B, a storage unit 15 for recording the detected entry and advance information of the train 3, and the entry of the train 3 And a transmission unit 16 for sending out the advance information to the external device 4. The external device 4 is, for example, an interlocking device, an operation management device, a passenger guidance device, or the like that controls operations of a traffic light and a switch.

FIG. 3 is a block diagram illustrating an internal configuration example of the control unit 14 in the detection processing apparatus 1. ₂ is provided with receiving circuits 17 ₁ , 17 ₂ ,... That receive respective signals corresponding to the interrogators Q1 to Q4. The receiving unit 13 may be configured as a single module packaged including receiving circuits 17 ₁ , 17 ₂ ,. As the internal configuration of the control unit 14, received signal reading determination circuits 18 ₁ , 18 ₂ ,..., An entry determination circuit 19 and an advance determination circuit 20 are provided.

The reception signal readout judgment circuits 18 ₁ , 18 ₂ ,... Receive the response signals from the ground responders G or on-board responders Va, Vb received by the reception circuits 17 ₁ , 17 ₂ ,. The number of the reception circuits 17 ₁ , 17 ₂ ,... Is provided corresponding to the number of the reception circuits 17 ₁ , 17 ₂ ,. The received signal read determining circuit 18 ₁ receives the response signal from the ground responder G or the onboard responders Va and Vb received by the receiving circuit 17 ₁ and receives the unique information and position information included in the response signal. A unique information / position information reading circuit 21 for reading out the information, a ground responder signal reception state determination circuit 22 for inputting a response signal from the ground responder G read and distributed by the unique information / position information reading circuit 21; A first onboard responder signal reception state determination circuit 23 for inputting a response signal from the onboard responder Va, and a second onboard responder signal reception state determination for inputting a response signal from the onboard responder Vb. And a circuit 24 for determining the reception state of each response signal.

  The approach determination circuit 19 receives the ground response signal reception state determination circuit 22, the first vehicle response signal reception state determination circuit 23, and the second vehicle response signal reception state determination circuit 24. When the judgment signal is input and the response signal from the ground responder G is not received, the response signal is received from the onboard responders Va and Vb at the end side or the start side end of the train 3 Is detected and it is determined that the train 3 has entered the block B.

The advance determination circuit 20 is output from the ground responder signal reception state determination circuit 22, the first on-board responder signal reception state determination circuit 23, and the second on-board responder signal reception state determination circuit 24. The reception state determination signal is input, and the reception is received within the first predetermined time after the reception of the response signals from the onboard responders Va and Vb at the start side end point or the end point side end of the train 3 is lost. The recovery of the response signal from the ground responder G that has disappeared is detected, and the advancement of the train 3 from the block B behind the block B is determined. Alternatively, after receiving the response signals from the on-board responders Va and Vb at the end side or the start side end of the train 3, the reception is lost, and the second predetermined time or more is received until it is received again and the reception is lost. And the recovery of the response signal from the ground responder G that has lost the reception is detected within the third predetermined time after the response signals from the onboard responses Va and Vb are not received. Thus, it is determined whether the train 3 from the block B is moving backward. The control unit 14 may be configured as a single module packaged including the reception signal readout determination circuits 18 ₁ , 18 ₂ ,.

Then, as shown in FIG. 3, the first predetermined time for detecting the advance or advancing of the train is detected in the storage unit 15 as compared with the determination time for the presence or absence of the received signal. And a memory 15a, a memory 15b, and a memory 15c as storage means for storing the second predetermined time and the third predetermined time. For example, in the above memory 15a is stored a first predetermined time T ₁ is, in the memory 15b second predetermined time T ₂ is stored, the third predetermined time T ₃ is stored in the memory 15c.

  Note that the determination result signals from the entry determination circuit 19 and the advance determination circuit 20 are sent to the transmission unit 16 and, for example, to the external device 4 shown in FIG.

  Next, an outline of a train approach and advance detection method performed using the train detection system configured as described above will be described with reference to FIGS. Here, FIG.4 and FIG.5 shows the state which detects the entrance of the train 3 from the back block to the said block, and detects that the train 3 advances advancing as it is from the block behind the said block, 6 and 7 show a state in which the approach of the train 3 from the rear block to the block is detected, and the train 3 moves backward from the block and advances to the rear block.

  First, in FIG. 1, it is assumed that the train 3 is on the block B1 and proceeds in the direction of arrow D from the starting point side on the left side of the drawing toward the end point side on the right side and enters the block B2. In this state, as shown in FIG. 4 (a), an interrogator Q2 in which the end portion (leading portion) of the train 3 traveling on the rail 2 is opposed to the boundary between the blocks B1 and B2 and the ground response When proceeding with the device G2, communication between the two is interrupted. Then, the detection processing device 1 shown in FIG. 1 detects the absence of reception of the response signal from the ground responder G2 sent from the interrogator Q2, and performs point detection of “there is a train”. Thereby, the said detection processing apparatus 1 detects approach of the train 3 to front block B2. At this time, it has not yet been determined which train 3 has entered.

  Next, when the train 3 traveling on the rail 2 further proceeds and the on-board responder Va at the end of the train 3 reaches the position of the interrogator Q2, the response signal from the on-board responder Va ( The interrogator Q2 receives (including the unique information of the train 3 and the installation position information). Then, the detection processing device 1 detects the unique information of the on-board responder Va sent from the interrogator Q2, and sets it as “train detection”. Thereby, the said detection processing apparatus 1 determines the train 3 which approached to the said block B2. At this time, the detection processing device 1 manages the unique information of the train 3 that has entered the block B2 as on-line train information. In-line train information once detected for entry is held until the advance of the train 3 can be detected.

  Next, the train 3 traveling on the rail 2 further proceeds, and as shown in FIG. 4 (b), the middle portion of the train 3 is located on the line where the interrogator Q2 and the ground responder G2 are arranged to face each other. During this period, the communication between the two is continuously interrupted, and the already detected entry detection of the train 3 to the block B2 is maintained. Thereafter, the train 3 further advances, and when the onboard responder Vb at the starting side end (rear part) of the train 3 comes to the position of the interrogator Q2 in FIG. 4B, the response from the onboard responder Vb. The interrogator Q2 receives the signal (including the unique information of the train 3 and the installation position information). Then, the detection processing device 1 detects the mounting position information of the on-board responder Vb sent from the interrogator Q2, and detects that the starting side end of the train 3 is located.

And as shown in FIG.4 (c), the train 3 which travels on the rail 2 further advances, and the interrogator Q2 in which the starting side end portion of the train 3 is disposed opposite to the boundary between the blocks B1 and B2 and the ground If it passes between the responders G2, reception of the response signal from the onboard responder Vb at the starting side end of the train 3 is completed. Thereafter, communication between the interrogator Q2 and the ground responder G2 is restored. At this time, in FIG. 5, it is assumed that the interrogator Q2 is located on the line at the starting side end (left end) of the train 3, and within the range of the vehicle length of the train 3, the interrogator Q2 The range in which the response signal of the responder Vb is received is L1, the range in which the response signal of the onboard responder Vb is not received is L2, and the minimum travel time of the train 3 traveling the distance of L2 is the first predetermined time T. _Set to ₁ . Then, it is detected that the signal from the ground responder G2 is recovered within a time shorter than the first predetermined time T ₁ after the reception of the response signal from the on-board responder Vb at the starting side end portion is lost. Then, the advancing advance of the train 3 is detected from the rear block B1 toward the block B2.

This is because if the train 3 has moved backward from the state of entering the block B2 shown in FIG. 4 (b), the range of L2 shown in FIG. 5 is a state where the response signal of the onboard responder Vb is not received. detects that the first of the period does not receive a response signal time by the on-board transponder Vb of the predetermined time T ₁ is generated, the train 3 is retracted midway. However, when the signal from the ground responder G2 is recovered within a time shorter than the first predetermined time T ₁ after the reception of the response signal from the on-board responder Vb at the start side end portion, As shown in FIG. 4C, the train 3 moves forward as it is and detects that it has advanced from the rear block B1.

The first predetermined time T ₁ is the vehicle length, the vehicle performance (acceleration performance), the distance between the interrogator and the on-vehicle responder, the antenna performance (number of elements), the interrogator and each responder. For example, it is in the range of 1 second to several seconds.

  The above is the basic detection method of the train approach and advancement that detects the entry of the train 3 from the rear block to the block and detects that the train 3 advances and advances from the block behind the block as it is.

  Next, in FIG. 1, it is assumed that the train 3 is on the block B1 and proceeds in the direction of the arrow D from the starting point to the end point, enters the block B2, and then stops at the block B2 and retreats halfway. At this time, in FIG. 6A, the entry detection and the train determination of the train 3 from the block B1 to the block B2 are performed in the same manner as shown in FIG.

Next, the train 3 traveling on the rail 2 further proceeds, and as shown in FIG. 6 (b), the middle part of the train 3 is located on the line where the interrogator Q2 and the ground responder G2 are arranged to face each other. During this period, the communication between the two is continuously interrupted, and the already detected entry detection of the train 3 to the block B2 is maintained. Here, the train 3 may elapsed time is regarded as stops in each block B and the second predetermined time T _2. Further, in FIG. 7, it is assumed that the interrogator Q2 is located on the end point side end (right end) of the train 3, and the interrogator Q2 is within the range of the vehicle length of the train 3. the range for receiving a response signal vessels Va and L4, a range that does not receive a response signal of the on-board transponder Va as L3, the minimum travel time of the train 3 travels the distance of L3 a third predetermined time T ₃ And

Then, in the traveling state shown in FIG. 6B, after receiving the response signal from the onboard responder Va at the end of the train 3 on the end point side, the reception is lost, and the time until the reception is lost after receiving the response signal again. However, if a time longer than the second predetermined time T ₂ has elapsed and no signal is received from the ground responder G2 during that time, the train 3 is considered to have stopped in FIG. 6B. Thereafter, in FIG. 6 (b), it is assumed that the train 3 has moved backward, and when the onboard responder Va at the end point side (leading portion) of the train 3 comes to the position of the interrogator Q2, the above onboard responder Va The interrogator Q2 receives the response signal (including the unique information of the train 3 and the installation position information). Then, the detection processing device 1 detects the mounting position information of the on-board responder Va sent from the interrogator Q2, and detects that the end point side end portion of the train 3 is located.

Next, as shown in FIG. 6 (c), the train 3 moves backward in the direction of the arrow E, and the end point side end of the train 3 and the interrogator Q2 arranged opposite to the boundary between the blocks B1 and B2 and the ground When passing through the responder G2, the reception of the response signal from the onboard responder Va at the end of the train 3 on the end point side ends. Thereafter, communication between the interrogator Q2 and the ground responder G2 is restored. At this time, in the end-point side end portion shorter than the third predetermined time T ₃ from missing reception of the response signal from the on-vehicle transponder Va of, that the signal from the ground responder G2 is restored It detects and detects that the train 3 moved backward from the said block B2 toward the back block B1, and advanced.

At this time, if the train 3 moves forward from the state considered to have stopped and entered the block B2 in FIG. 6B, the state shown in FIG. It is detected that the vehicle has advanced into the block B2. However, if the signal from the ground responder G2 from missing reception of the response signal to the third in a time shorter than the predetermined time T ₃ from the on-vehicle transponder Va of the end-point side end portion is recovered, As shown in FIG.6 (c), it detects that the train 3 moved backward from the said block B2 and advanced.

Although the second predetermined time T ₂ varies depending on the vehicle performance (acceleration performance) and the like, since it takes at least 10 seconds to several tens of seconds to switch the driving direction, it is equivalent to that time. The third predetermined time T ₃ is the vehicle length, vehicle performance (acceleration performance), distance between the interrogator and on-vehicle responder, antenna performance (number of elements), interrogator and each responder. For example, it is in the range of 1 second to several seconds, although it varies depending on the communication method between them.

  The above is the detection method of the train approach advancement which detects the approach of the train 3 from the rear block to the block and detects that the train 3 moves backward from the block and advances. In the example of FIGS. 4 to 7 described above, the case where the train 3 travels from the starting point side toward the ending point side has been described, but conversely, when traveling from the ending point side toward the starting point side, the above is reversed. It is possible to detect the entry and advancing of the train 3 with the above logic.

  Next, operation | movement of the control part 14 in the detection processing apparatus 1 shown in FIG. 3 and the train approach advance detection method of this invention are demonstrated with reference to the flowchart of FIGS. First, FIG. 8 shows a state in which the entry of the train 3 from the rear block to the block is detected and confirmed. First, the reception signal reading determination circuit 18 in the control unit 14 shown in FIG. 3 determines whether or not the reception circuit 17 in the reception unit 13 receives a signal from the interrogator Q (step of FIG. 8). S1) If there is signal reception, proceed to "YES" side. At this time, the received signal from the receiving circuit 17 is input to the unique information / position information reading circuit 21 in the received signal reading determination circuit 18.

  Next, the unique information / position information reading circuit 21 reads the unique information and position information included in the received signal of the interrogator Q, and determines the corresponding reception state according to the distinction between the ground responder or the on-board responder. The circuit is notified (step S2). That is, if it is a response signal from the ground responder G, it notifies the ground responder signal reception state judgment circuit 22, and if it is a response signal from the onboard responder Va at the end side end, the first onboard responder The signal reception state determination circuit 23 is notified, and if it is a response signal from the vehicle-side responder Vb at the starting side end, it is notified to the second vehicle-mounted responder signal reception state determination circuit 24.

  The ground responder signal reception state determination circuit 22, the first onboard responder signal reception state determination circuit 23, and the second onboard responder signal reception state determination circuit 24 receive the respective reception signals. Depending on the state, it is determined that “reception” or “no reception” (step S3). For example, when one data reception time elapses after receiving data, one data signal is received, and when this signal is received continuously m data, the signal reception state is “received”. Is determined to be “no reception”. Then, the determination result of “with reception” or “without reception” is sent to the entry determination circuit 19 shown in FIG.

  Next, the approach determination circuit 19 determines whether or not the signal from the ground responder G2 facing the interrogator Q2 on the origin side of the block B2 shown in FIG. 4A, for example, has not been received (step S4). In FIG. 4A, when the end of the train 3 traveling on the rail 2 advances between the interrogator Q2 and the ground responder G2, the communication between the two is cut off and no reception is detected. Then, the process proceeds to the “YES” side, and it is determined that the entry of the train 3 from the starting point side of the block B2 is detected (step S5).

  Thereafter, it is determined whether or not a signal is received from the onboard responder Va (or onboard responder Vb at the start side end) of the train 3 by the interrogator Q2 on the start side of the block B2. (Step S6). In FIG. 4A, when the onboard responder Va at the end of the train 3 comes to the position of the interrogator Q2, the response signal from the onboard responder Va (specific information and installation position information of the train 3). Is received), the presence of reception is detected, the process proceeds to “YES”, and the train 3 that has entered from the starting side of the block B2 is determined (step S7). As a result, the entry of the train 3 from the rear block to the block is detected and confirmed. And the result of this approach determination is sent to the transmission part 16 shown in FIG.

  Next, FIG. 9 shows a state in which an advance or advancing from the block of the train 3 in which the entry to the block has been detected and confirmed is detected, or a halfway backward advance is detected. First, steps S11 to S13 in FIG. 9 proceed in exactly the same way as steps S1 to S3 in FIG. Here, the determination result of “with reception” or “without reception” at step S13 is sent to the advance determination circuit 20 shown in FIG.

  Next, in step S14, for example, it is determined whether or not the train 3 enters from the starting point side of the block B2 shown in FIG. When entering the block B2 from the starting point side, the process proceeds to the “YES” side and enters step S15. Conversely, when entering the block B2 from the end point side, the process proceeds to the “NO” side and enters step S18. Here, it is assumed that the block B2 is entered from the starting point side and proceeds to the “YES” side.

  In step S15, it is determined whether or not the determination target is an interrogator on the end point side of the block. Here, since the train 3 detects the advance or advance of the train 3 while the train 3 enters the block B2 from the starting side, the advance of the train 3 becomes an interrogator on the end side of the block B1, On the way, the backward advancement becomes an interrogator on the starting side of block B2. Now, if it is the interrogator Q2 on the end point side of the block B1 that is to be determined, the process proceeds to “YES” and enters step S16, and advancing advance determination is performed.

The contents of the step of determining the advancement advance are as shown in the flowchart of FIG. First, the interruption time from the time when no signal is received from the onboard responder Vb at the start side end of the train 3 to the time when the signal from the ground responder G2 that has not been received before is recovered by the interrogator Q2 on the end point side. t _b is determined (step S16a).

Next, the aforementioned first predetermined time T ₁ is read from the memory 15a in the storage unit 15 shown in FIG. 3, and it is compared whether or not the cutoff time t _b is equal to or shorter than the first predetermined time T ₁ ( Step S16b). When the cut-off time t _b is equal to or shorter than the first predetermined time T ₁ , the process proceeds to “YES”, and the advance of the train 3 from the block B1 is detected as shown in FIG. S16c). And the detection result of the advance advance from this block B1 is sent to the transmission part 16 shown in FIG.

  On the other hand, if it is determined in step S15 that the interrogator Q2 on the starting point side of the block B2 is to be determined, the process proceeds to “NO” and enters step S17, where a backward advancement determination is performed.

  The contents of the step of determining whether to move backward on the way are as shown in the flowchart of FIG. First, after receiving the signal from the onboard responder Va at the end of the train 3 by the interrogator Q2 on the starting side, the reception is lost, and the stop time t until the reception is lost after receiving again is determined. (Step S17a).

Next, from the time when no signal is received from the onboard responder Va at the end of the end of the train 3 by the interrogator Q2 on the starting side until the signal of the ground responder G2 that has not been received before is recovered. time determines t _a (step S17b).

Next, the second predetermined time T ₂ and the third predetermined time T ₃ are read from the memories 15b and 15c in the storage unit 15 shown in FIG. 3, and the stop time t is equal to or longer than the second predetermined time T _2. , and the and interruption time t _a to compare whether third or the predetermined time T ₃ below (step S17c). And at the stop time t is a second predetermined time T ₂ or more, and cutoff time t _a is if the third is the predetermined time T ₃ below, "YES" the flow proceeds to the side, as shown in FIG. 6 (c) Next, the advancing of the train 3 from the block B2 is detected (step S17d). Then, the detection result of the backward advancement from the block B2 is sent to the transmission unit 16 shown in FIG.

  If the block B2 is entered from the end point in step S14, the process proceeds to "NO" and enters step S18, and whether or not the interrogator on the starting point side of the block is to be determined. Thereafter, in the same manner as described above, it is determined in step S19 whether or not advancing advance from the corresponding block is determined, and in step S20 whether or not advancing backward from the corresponding block is determined, and the respective detection results are shown in FIG. It is sent to the transmitter 16.

It is a system configuration figure showing an embodiment of a train detection system by the present invention. It is a block diagram which shows the internal structure of the interrogator in the said train detection system, a ground responder, an on-board responder, and a detection processing apparatus. It is a block diagram which shows the internal structure of the control part in a detection processing apparatus. It is explanatory drawing which shows the train approach advance detection method by this invention, and is a figure which shows the approach detection of the train to a block, and a progress advance detection. It is explanatory drawing which shows the state which assumes that the interrogator is located on the line of the starting side edge part of a train, and sets the 1st predetermined time. It is explanatory drawing which shows the other train approach advance detection method, and is a figure which shows the approach detection of the train to a block, and the way backward advance detection. It is explanatory drawing which shows the state which assumes that the interrogator is located on the line of the terminal part by the side of the end point of a train, and sets the 3rd predetermined time. It is a flowchart which shows the train approach advance detection method by this invention, and has shown the state which detects and confirms the approach of the train from the back block to the said block. It is a flowchart which shows the train approach advance detection method by this invention, and has shown the state which detects the advance advance from the block of the train in which the approach to the said block and confirmation were performed, or the advancing on the way back. It is a flowchart which shows the content of the step of progress advancement determination in the flowchart shown in FIG. It is a flowchart which shows the content of the step of the middle retreat advance determination in the flowchart shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Detection processing apparatus 2 ... Rail 3 ... Train 4 ... External device 13 ... Reception part 14 ... Control part 15 ... Memory | storage part 15a, 15b, 15c ... Memory 16 ... Transmission part 18 ... Received signal reading judgment circuit 19 ... Ingress determination circuit 20 ... Advance determination circuit Q, Q1-Q4 ... Interrogator G, G1-G4 ... Ground responder Va, Vb ... On-board responder B1-B4 ... Block

Claims (5)

The first communication means installed in the vicinity of the rail at the boundary of each block, which is a closed section of the train travel, and the first communication means can communicate with each other, and the communication area is cut off by the train body when the train passes. The second communication means installed opposite to the first communication means and the first communication means can communicate with each other, and the end point side end portion and the start side end portion of the train, or the train Signals from the third communication means mounted on the end point side end part and the start point side end part of each vehicle constituting each vehicle and the second or third communication means received by the first communication means at the boundary of each block In a train detection system comprising a detection processing device that captures and detects the entry and advance of a train to each block,
In the detection processing apparatus, the first communication means at the boundary of the starting point side or the ending point side of each block stops receiving the signal from the second communication means facing it, and the end point side end part or the starting point side end of the train Detecting the reception of a signal from the third communication means of the part and detecting the entry of the train to the block, the first communication means detecting the train entry, the train start side end part or end point side end part The signal from the second communication means that has lost the reception is detected within the first predetermined time after the reception of the signal from the third communication means is lost, and the signal from the block behind the block is detected. After receiving the signal from the third communication means at the end of the train at the end of the train or at the end of the start at the first communication means that detects the advance of the train and the first communication means that detected the train approach, the reception is lost and received again. Until there is no more reception The block is detected by detecting the recovery of the signal from the second communication means that has lost the reception within the third predetermined time after the elapse of time and the reception of the signal from the third communication means has been lost. A train detection system characterized by detecting a backward advancement of a train on the way. Installed in the vicinity of the rail at the boundary of each block, which is a closed section of train travel, with an interrogator that has a directional communication area and transmits an interrogation signal and receives an answer signal, and by the train's car body when the train passes A ground responder installed opposite to the interrogator such that the communication area is cut off, having a directivity communication area, receiving the interrogation signal and transmitting a response signal including its own unique information; One at each of the end point side and the start side end of the train, or the end point side end and the start side end of each vehicle constituting the train. The onboard responder that receives and transmits the response signal including the specific information and installation position information of the train, and the response signal from the ground responder or the onboard responder received by the interrogator at the boundary of each block Train entry for each block, a detecting device for detecting the advance, in train detection system comprising comprising a
In the detection processing device, the interrogator at the boundary of the starting point or the ending point of each block stops the reception of the signal from the ground responder facing it, and the vehicle at the end point or the starting side end of the train An on-board transponder at the end of the train at the start or end of the train is detected by the interrogator that detects the train entering the block by detecting the reception of the signal from the upper responder. Detects the progress of a train from the block behind the block by detecting the recovery of the signal from the ground responder that has lost the reception within the first predetermined time after the reception of the signal from the block is lost. Then, after receiving the signal from the onboard responder at the end of the train at the end of the train or at the start of the train at the interrogator that has detected the train approach, the second is received until the signal is received again and is no longer received. This car has passed the specified time and this car Within 3rd predetermined time after receiving no signal from the responder, it detects that the signal from the ground responder that has lost the reception recovers, and detects the train moving backward from the block. A train detection system characterized by that.   The detection processing device stores a first predetermined time, a second predetermined time, and a third predetermined time for detecting whether the train has advanced or moved backward compared to a determination time for the presence or absence of a received signal. The train detection system according to claim 1, further comprising a storage unit. The interrogator at the boundary of the starting point or ending point of each block, which is the closed section of train travel, detects that there is no response signal received from the ground responder facing it, and the train enters the block. Detecting step;
In the state where no reception of the response signal from the ground responder continues, the response signal is received from the on-board responder at the end of the train or at the start of the train, and the specific information included in the response signal Confirming the train that has entered the block with
The above-mentioned ground response is lost within the first predetermined time after no response signal is received from the onboard responder at the train start point or end point end at the interrogator that detects the train approach. Detecting the recovery of the response signal from the vessel and detecting the advance of the train from the block behind the block;
A train approaching advance detection method characterized by: The interrogator at the boundary of the starting point or ending point of each block, which is the closed section of train travel, detects that there is no response signal received from the ground responder facing it, and the train enters the block. Detecting step;
In the state where no reception of the response signal from the ground responder continues, the response signal is received from the on-board responder at the end of the train or at the start of the train, and the specific information included in the response signal Confirming the train that has entered the block with
After receiving the response signal from the onboard responder at the end of the train or at the start of the train at the interrogator that has detected the train approach, the second is received until the second signal is received again It is detected that the response signal from the ground transponder that has lost the reception is recovered within a third predetermined time after the predetermined time has elapsed and the reception of the response signal from the onboard responder is lost. Detecting a backward advancement of the train from the block;
A train approaching advance detection method characterized by:

Images