JP2006256352A - Over-running prevention control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To stably prevent over-running of a train by simplifying a system configuration, continuously detecting the speed of the train, and improving the precision of the speed checking. <P>SOLUTION: The stop position control of the train 1 is precisely performed by continuously calculating the position and the speed of the train 1 every a constant distance D and generating the speed pattern with respective checking loops 11 to 13 of the loop 8 for position sensing which has three sets of checking loops 11 to 13 which are alternately provided with a receiving area which is provided along the traveling path containing a train stop position, and detects a check-in signal received from the train 1 every constant distance D, and the receiving stop area for detecting no check-in signal, and is parallelly disposed by shifting the position of respective checking loops 11 to 13 in steps of the distance of 2D/3 with respect to the traveling direction of the train 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an overrun prevention control device for preventing a serious accident in which a train overruns without stopping at a target stop position and collides with a terminal end of a traveling path or derails. .

  In the terminal station of the dead end line, when the distance from the end of the home track to the end of the traveling path is short and it is difficult to secure a sufficient braking distance, for example, Patent Document 1 shows protection of an overrunning train. As such, an overrun prevention device is provided.

  As shown in FIG. 6, the overrun prevention device disclosed in Patent Document 1 includes a set of two ground elements 21 a and 21 b that send a signal of a predetermined frequency to a plurality of points along a deadline travel path. Installed at predetermined intervals L1 to L4, the train 1 has a speed curve 22 to stop at the stop position set according to the end of the traveling path with the service brake and a speed curve 23 to stop at the limit stop position with the emergency brake. The time required to travel between each pair of ground elements 21a and 21b at the verification speed determined in (1) is stored in advance as the verification time. And the train 1 receives the signal from each ground element 21a, 21b, compares the reception time difference from the pair of ground elements 21a, 21b and the preliminarily stored verification time, and when the reception time difference is shorter than the verification time, The brake is operated so that it stops before the limit stop position.

  Thus, by providing a plurality of sets of two ground elements 21a and 21b along the traveling path, it is possible to prevent the train 1 from overrunning, but a plurality of sets of ground elements 21a and 21b along the traveling path. Therefore, it is not easy to install the storage device, the storage means for storing the verification time as an on-board device, the measurement means for detecting the reception time difference from the pair of ground elements 21a and 21b, and the comparison means for the reception time difference and the verification time. Therefore, the system configuration becomes complicated.

In addition, since the traveling speed of the train 1 is checked only at a point where two sets of ground elements 21a and 21b are provided, there is a disadvantage that the number of speed checking stages is small and fine speed checking cannot be performed.
JP-A-6-321099

  The present invention improves the disadvantages, simplifies the system configuration, continuously detects the speed of the train, improves the accuracy of the speed check, and can prevent overrun of the train stably. The object is to provide a control device.

  The overrun prevention control device of the present invention has an on-vehicle device and a ground device, and the on-vehicle device is provided with a check-in transmitter for generating a check-in signal and a check-in device provided at the head of a train. The ground device has an antenna for transmitting a signal, and the ground device has an ATC / TD loop coil, an ATC / TD ground device, a position detection loop and a position / speed tracking device provided along the route of the train. The detection loop is provided along a traveling path including a train stop position, and a reception area for detecting a check-in signal transmitted from the train at every fixed distance D and a reception stop area for detecting no check-in signal are alternately provided 3 Each of the verification loops is arranged in parallel at a distance of 2D / 3 with respect to the traveling direction of the train, and the position / speed tracking device includes a check-in signal receiving unit and a signal. The check-in signal receiving unit is connected to one end of each check loop, receives the intermittent signal of the check-in signal through each check loop, and the signal processing unit The check signals received by the check-in signal receiving unit are converted into digitized verification signals, and the converted verification signals are logically generated to generate position signals for each distance D / 3. The position signal created by the signal processing unit is sequentially tracked to create train position data and speed data, and the ATC / TD ground unit uses the position data and speed data created by the position / speed check unit to place the train at the train stop position. A speed pattern for stopping the vehicle is generated and transmitted to the train via the ATC / TD loop coil to control the speed of the train.

  The signal processing unit determines whether or not the check-in signal is normally received in each check loop. When the check-in signal is not normally received in any of the check loops, the abnormality detection signal is transmitted to the ATC / TD ground. When an abnormality detection signal is sent, the ATC / TD ground device generates an emergency stop signal and transmits it to the train via the ATC / TD loop coil to cause the train to perform emergency braking.

  Further, the signal processing unit confirms the order of the respective verification signals, and when the order of the respective verification signals is not normal, sends a failure detection signal to the ATC / TD ground device, and the ATC / TD ground device receives the failure detection signal. An emergency stop signal is generated and transmitted to the train through the ATC / TD loop coil to cause the train to perform emergency braking.

  Since the present invention continuously calculates the train position and speed for each fixed distance determined by the arrangement of each verification loop of the position detection loop to generate a speed pattern and control the train speed, the train speed is finely defined. It is possible to detect, and the stop position control of the train can be performed with high accuracy.

  In addition, when an abnormality occurs in the apparatus or when an abnormality occurs in the running state of the train, the emergency braking state is immediately set, so that overrunning of the train can be stably prevented.

  FIG. 1 is a block diagram showing the configuration of the overrun prevention control device of the present invention. For example, as shown in FIG. 1A, an on-board device provided in a rubber tire type train 1 used in a new transportation system includes a check-in transmitter 2 that generates a check-in signal, and a head portion of the train 1. An antenna 3 that transmits a check-in signal to the ground device, a check-out transmitter 4 that generates a check-out signal, and an antenna 5 that is provided at the rear end of the train 1 and transmits a check-out signal to the ground device. Have

  As shown in FIG. 1 (b), the ground device includes an ATC / TD loop coil 6, an ATC / TD ground device 7, a position detection loop 8, and a position / speed tracking device provided along the travel path of the train 1. 9 The position detection loop 8 is provided along a traveling path including the train stop position of the platform 10 and, as shown in FIG. 2, a reception area for detecting a check-in signal transmitted from the antenna 3 of the train 1 every certain distance D. And, for example, three sets of check loops 11, 12, and 13 in which reception stop areas where no check-in signal is detected are alternately provided. The check loop 12 is displaced by a distance 2D / 3 with respect to the travel direction of the train 1 with respect to the check loop 11, and the check loop 13 is only a distance 4D / 3 with respect to the travel direction of the train 1 with respect to the check loop 11. Three sets of verification loops 11 to 13 are arranged in parallel at different positions. As shown in FIG. 2, the position / speed tracking device 9 includes a check-in signal receiving unit 14, a signal processing unit 15, and a position / speed checking unit 16. The check-in signal receiving unit 14 includes receiving units 141 to 143 that are connected to one end portions of the check loops 11 to 13 and receive intermittent signals of the check-in signals detected by the check loops 11 to 13, respectively. The signal processing unit 15 determines whether or not the reception signals of the check-in signals respectively received by the reception units 141 to 143 are normally received. If the reception signals are normally received, the signal processing unit 15 determines the reception signals for the verification loops 11 to 13. Converted to digitized verification signals L1, L2, and L3, confirms the order of the converted verification signals L1, L2, and L3, and performs logical operations on the verified verification signals L1, L2, and L3, and positions for each distance D / 3 A signal S is generated. The position / speed checking unit 16 sequentially tracks the position signal S generated by the signal processing unit 15 to generate the position data and speed data of the train 1, and calculates the train 10 to the train stop position of the platform 10 calculated from the generated position data. Train approach distance and speed data are sent to the ATC / TD ground device 7. The ATC / TD ground device 7 generates a speed pattern for stopping the train 1 at the train stop position based on the train approach distance and speed data sent to the train 1 via the ATC / TD loop coil 6 and transmits it to the train 1. Let's control the speed.

  When detecting the position and speed of the train 1 running with the overrun prevention control device configured as described above to perform brake control and stopping the train 1 at a predetermined train stop position to prevent overrun The operation will be described with reference to the flowchart of FIG.

  When the train 1 travels and receives the check-in signal transmitted from the antenna 3 of the train 1 by the ATC / TD loop coil 6 provided with the position detection loop 8, the ATC / TD ground device 7 positions the train detection signal. Send to the signal processing unit 15 of the speed tracking device 9 (step S1). When the train 1 further travels and the check-in signal transmitted from the train 1 is received through the check loops 11 to 13 by the receiving units 141 to 143 of the check-in signal receiving unit 14, as shown in FIG. The reception signal of the check-in signal that is intermittent every certain distance D is sent to the signal processing unit 15 (step S2). When the reception signal is sent while the train detection signal is being sent, the signal processing unit 15 discriminates the reception signal for each of the verification loops 11 to 13 (step S3), and the check-in signal is sent to each of the verification loops 11 to 13. It is determined whether or not it is normally received (step S4). As a result of this determination, when the check-in signal is not normally received in any one of the check loops 11 to 13, for example, the check-in signal is normally received in the check loops 11 and 12, but the check loop 13 When the check-in signal is not normally received, it is assumed that an abnormality such as a disconnection has occurred in the verification loop 13, and an abnormality detection signal is sent to the ATC / TD ground device 7. When the abnormality detection signal is sent, the ATC / TD ground device 7 generates an emergency stop signal and transmits it to the train 1 via the ATC / TD loop coil 6 (step S13). When the train 1 receives the emergency stop signal, it performs emergency braking and immediately stops (step S14).

  Moreover, when the check-in signal is normally received in each of the verification loops 11 to 13, the signal processing unit 15 receives the reception signal of the check-in signal received by the reception units 141 to 143 via each of the verification loops 11 to 13. As shown in FIG. 5, it is digitized and converted into verification signals L1 to L3 (step S5). Thereafter, the signal processing unit 15 determines whether or not the order of the converted verification signals L1 to L3 is normal (step S6), and when it is determined that the order of the verification signals L1 to L3 is not normal, the check-in signal reception unit 14 A failure detection signal is sent to the ATC / TD ground device 7. When the failure detection signal is sent, the ATC / TD ground device 7 generates an emergency stop signal and transmits it to the train 1 via the ATC / TD loop coil 6 (step S13). When the train 1 receives the emergency stop signal, it performs emergency braking and immediately stops (step S14).

  When the order of the verification signals L1 to L3 is normal, the signal processing unit 15 performs a logical operation on the verification signals L1 to L2, and generates a position signal S for each distance D / 3 as shown in FIG. The data is sent to the speed check unit 16 (step S7). The position / speed checking unit 16 sequentially tracks the changes in the received position signal S to generate position data and speed data of the train 1 (step S8), and the train approach to the stop position of the home 10 by the generated position data. The distance is calculated, and the calculated train approach distance and speed data are sent to the ATC / TD ground device 7 for each distance D / 3 determined by the position signal S (step S9). The ATC / TD ground device 7 generates a speed pattern for stopping the train 1 at the train stop position based on the received position data and speed data, and transmits it to the train 1 via the ATC / TD loop coil 6 (step S10). ). The train 1 controls the speed according to the sent speed pattern (step S11). This process is continuously repeated while receiving the check-in signal in each of the verification loops 11 to 13 (steps S12, S3 to S11). When the check loop signals 11 to 13 no longer receive the check-in signal, the signal processing unit 15 sends an abnormality detection signal to the ATC / TD ground device 7 (step S12). When the abnormality detection signal is sent, the ATC / TD ground device 7 generates an emergency stop signal and transmits it to the train 1 via the ATC / TD loop coil 6 (step S13). When the train 1 receives the emergency stop signal, it performs emergency braking and immediately stops (step S14).

  In this way, by continuously calculating the position and speed of the train 1 for each distance D / 3 determined by the arrangement of the check loops 11 to 13 to generate a speed pattern and controlling the speed of the train 1, The speed detection of the train 1 can be performed in detail, and the stop position control of the train 1 can be performed with high accuracy.

  In addition, when an abnormality occurs in the apparatus or when an abnormality occurs in the traveling state of the train 1, the emergency braking state is immediately set, so that the train 1 can be stably prevented from overrunning.

It is a block diagram which shows the structure of the overrun prevention control apparatus of this invention. It is a block diagram which shows the structure of a ground apparatus. It is a flowchart which shows operation | movement of an overrun prevention control apparatus. It is a wave form diagram which shows the received signal of a verification loop. It is a wave form diagram which shows a verification signal and a position signal. It is a block diagram of a prior art example.

Explanation of symbols

1; train, 2; check-in transmitter, 3; antenna, 4; check-out transmitter,
5; Antenna, 6; ATC / TD loop coil, 7; ATC / TD ground device,
8; Loop for position detection; 9; Position / speed tracking device; 11; Check loop;
12; verification loop; 13; verification loop; 14; check-in signal receiver;
15: Signal processing unit, 16: Position / speed checking unit.

Claims (3)

It has an on-vehicle device and a ground device, the on-vehicle device has a check-in transmitter that generates a check-in signal, and an antenna that is provided at the top of a train and transmits the check-in signal to the ground device,
The ground device has an ATC / TD loop coil, an ATC / TD ground device, a position detection loop, and a position / speed tracking device provided along the traveling route of the train,
The position detection loop is provided along a traveling path including a train stop position, and a reception area for detecting a check-in signal transmitted from the train and a reception stop area for not detecting a check-in signal are alternately provided for each fixed distance D. Each of the verification loops is arranged in parallel at a distance of 2D / 3 with respect to the traveling direction of the train.
The position / velocity tracking device has a check-in signal receiving unit, a signal processing unit, and a position / velocity checking unit, and the check-in signal receiving unit is connected to one end of each checking loop, and passes through each checking loop. The check signal is intermittently received, and the signal processing unit converts the received signal received by the check-in signal receiving unit into a digitized check signal, and performs a logical operation on the converted check signal to calculate the distance D. / 3 position signals are generated, and the position / speed checking section sequentially tracks the position signals created by the signal processing section to create train position data and speed data,
The ATC / TD ground device generates a speed pattern for stopping the train at the train stop position based on the position data and the speed data created by the position / speed checking unit, and transmits it to the train via the ATC / TD loop coil. And controlling the speed of the train.   The signal processing unit determines whether or not the check-in signal is normally received in each check loop. When the check-in signal is not normally received in any of the check loops, the abnormality detection signal is transmitted to the ATC / TD. 2. The system according to claim 1, wherein the ATC / TD ground device generates an emergency stop signal when an abnormality detection signal is sent, and transmits the emergency stop signal to the train via the ATC / TD loop coil to cause the train to perform emergency braking. Overrun prevention control device.   The signal processing unit confirms the order of the verification signals, and when the order of the verification signals is not normal, sends a failure detection signal to the ATC / TD ground device, and the ATC / TD ground device receives the failure detection signal. The overrun prevention control device according to claim 1 or 2, wherein an emergency stop signal is generated and transmitted to the train via the ATC / TD loop coil to cause the train to perform emergency braking.

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