JPH0737233B2 - Approaching train controller - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a case where a preceding vehicle is stopped at a station, and even if a succeeding vehicle in a section adjacent to the rear of the preceding vehicle is prohibited from traveling, The present invention relates to an approaching train control device that allows a vehicle to travel at a speed lower than a confirmed driving speed.

[Prior Art] Conventionally, a train control device (hereinafter referred to as ATC) that instructs a safe traveling speed to a train by arranging block division sections in a row and adjoining each other and performing a speed instruction for each train running there. Called) is proposed. This controls the ATC signal display in the rear section according to the position of the preceding vehicle.

[Problems to be Solved by the Invention] However, in such a conventional device, when the operating time is shortened, the degree of the influence of the delay time of the preceding vehicle at the station stop is increased, which causes the disorder of the train operation or the dumpling operation. There is a problem that may cause.

[Means for Solving the Problems] In order to solve such problems, the present invention provides a first signal transmission path for transmitting a signal for performing ATC control and a second signal transmission path for transmitting an approach signal to a following vehicle. Signal transmission line, a third transmission transmission line for transmitting a switching signal for instructing the transmission frequency switching of the on-board device, and when the approach signal is received, traveling is permitted even when the control by the ATC is stopped. The on-vehicle device and the ground device that detects a signal transmitted from the on-vehicle device and transmits an approach signal when the relative distance between the traveling vehicle and the following vehicle is a distance that does not cause a collision.

[Operation] Even in a section where traveling is prohibited, it is allowed to approach the preceding vehicle at a speed that can ensure safety while the approach signal is received. AT when the approach signal is no longer received
It shifts to the control state by C and the train stops.

[Embodiment] FIG. 1 is a block diagram showing an embodiment of the present invention. In the figure, 1n to 1n _-2 are ATC transmission lines using rails or ATC transmission lines using loop coils laid along a running route. These are provided for each block section, and the first signal transmission for instructing a train running in each block section at a predetermined traveling speed by cascading the block sections adjacent to each other along the line It constitutes the road 5. Among them, for example, 1n is a section where the preceding vehicle 2 ₁ is stopped at the station platform 3, 1n _-1 is a 0 ₁ section, 1n _-2 is a 45 section, and a following vehicle 2 ₂ is a 45 section. .

The information of the train existing in each block segment and traveling there is detected by the train detector 4 and transmitted to a train control device (not shown) by a known method. The train control device is configured to instruct a train existing in each closed section to travel at a speed that allows safe running. 6
Is a second signal transmission path that is arranged along the first signal transmission path 5 starting from the closed section 1n including the station platform and extending to the adjacent closed section 1n- ₁ behind the closed section. This signal transmission line 6
Is a loop coil in which two parallel wires are laid every 5 to 50 m.
This is a signal line for detecting the twisted point to detect the train position and transmitting an ultra-approaching signal that allows the vehicle to travel in the section at a speed equal to or lower than the confirmation operation speed.

7 is a ground device for controlling super approach operation, 8 is an on-board device installed in a train, 9 is a third signal transmission line provided behind the second signal transmission line 6, and a rail is used. Or a loop coil provided along the traveling path. In the ground equipment, the signal selector 7 ₂ and the frequency switching transmitter 7 ₃ constitute the frequency switching device 20, and the distance detector 7 ₁₀ and the distance detector 7 ₁₇ and the relative distance detector 7 ₁₉ are the inter-vehicle distance detectors. 21 constitute, approaching the signal wave selector 7 ₁₄ and proximity signal transmitter 7 ₁₅ constitute a proximity signal sender 22. In the on-board equipment, the F1 frequency transmitter
The on-board transmitter 23 is constituted by 8 ₅ , the F2 frequency transmitter 8 ₆ , the signal selector 8 ₄ and the on-board signal transmitter (8 ₇ ).

In the device constructed in this way, first the preceding vehicle is 1n _-1
The operation when entering the section will be described. The preceding vehicle
Its position by ATC · train detector 4 is detected, so that the signal to the ATC device 8 ₁ onboard system side by the ground side of the ATC device, not shown, is transmitted, is safe driving.

First, the frequency checker 7 ₁ controls the signal selector 7 ₂ . As a result, the frequency switching transmitter 7 ₃ sends a frequency switching signal for the signal frequency to be transmitted from the on-board device 8 to F1 hybrid circuit 7 _4, via a third signal transmission path 9.

This signal is received via an antenna 8 ₂ and a super close receiver 8 ₃ provided on the on-board device of the preceding vehicle. Therefore, the signal selector 8 ₄ is controlled by the signal and selects the F1 frequency oscillator 8 ₅ , so that the on-board signal transmitter 8 ₇ transmits the signal of the frequency F1 from the antenna 8 ₈ . The transmitted signal is received by the ground device 7 via the third signal transmission line 9, and detected by the signal detector 7 ₆ via the hybrid circuit 7 ₄ and the F1 bandpass filter 7 ₅ . The detected signal is supplied to a frequency Shosa device 7 _1, it determines whether or not switching is to command the frequency reasonable. Normally, an approach signal is sent here, that is, a signal that indicates a speed at which the vehicle can safely operate even if the first transmission line is a stop signal is used to advance the train. since the train is not the frequency Shosa unit ₇₁ is adapted to not perform the transmission of the signal.

When the preceding vehicle enters the second signal transmission line 6, the signal of the frequency F1 transmitted from the on-board signal transmitter 8 ₇ is received by the second signal transmission line 6, and the signal is received by the hybrid circuit 7 ₇ , F1
The signal is supplied to the signal detector 7 ₉ and the distance detector 7 ₁₀ via the band pass filter 7 ₈ . When the preceding vehicle passes the Yoka point, where the received signal level is so reduced, the distance detector 7 ₁₀ counts the reduction number of the signal level. Train The distance detector 7 ₁₀ by traveling the second signal transmission line, to detect the absolute position of any of in a position of the distance only from the second signal transmission line start point. On the other hand, the signal detector 7 ₉ detects a signal of a frequency F1, because it is providing the detected signal to a frequency Shosa device 7 _1, frequency Shosa device 7 ₁ preceding vehicle is transmitting a signal of a frequency F1 I have confirmed that. And the preceding car will soon be at station platform 3
Reach and stop.

Then, the following vehicle approaches the third signal transmission line 9. At this time, the following vehicle causes interference at the same frequency as the preceding vehicle, so the frequency checker 7 ₁ changes the transmission frequency of the on-board signal transmitter 8 ₇ to
Signal selector 7 ₂ to send the switching signal for F2
To control. Therefore, frequency switching transmitter 7 ₃ onboard signal transmitter 8 ₇ is transmitting a switching signal for selecting a signal of frequency F2 from the third signal transmission path 9.

The switching signal is received via the antenna ₈₂ of the following vehicle in ultra proximity receiver 8 _3, since the signal is supplied to the signal selector 8 _4, the signal selector 8 ₄ selects the F2 frequency oscillator 8 ₆ Then, the on-board signal transmitter 8 ₇ transmits a signal of frequency F2. This signal is the third signal transmission line 9, hybrid circuit
Signal detector 7 ₁₂ via bandpass filter 7 ₁₁ for 7 ₄ and F2
Supplied. And since signal detected by the signal detector 7 ₁₂ is supplied to the frequency Shosa device 7 _1, frequency Shosa device ₇₁ confirms that it is operating at a frequency of as following vehicle is commanded. Here, since the preceding vehicle is in the section of the second signal transmission line 6, the following vehicle is normally instructed to stop by the ATC signal transmitted via the first signal transmission line. The purpose of this device is to approach the preceding vehicle as much as possible within the range where safety can be secured even if the stop signal is commanded, and to enter the station platform in a short time if allowed to proceed. is there. For this reason the frequency checker 7 ₁
Drives the approach signal selector 7 ₁₄ via the AND circuit 7 ₁₃ . As a result, the proximity transmitter 7 ₁₅ second signal transmission line section of even stop signal, and transmits the proximity signal to allow traveling at a speed that can ensure safety from the second signal transmission line 6.

The approach signal is transmitted via the antenna 8 ₂ of the following vehicle to the super approach receiver 8 ₃
Will be received at. The received signal acts on ATC device 8 ₁ following vehicles, in preference stop signal being instructed from the first signal transmission line speeds that can ensure the safety, for example, a second signal in the confirmation operating speed The section of the transmission path 6 is advanced. As the following vehicle progresses, the signal of frequency F2 is received by the second signal transmission path 6, and the distance detector 7 ₁₇ and the signal detector 7 ₁₈ are passed through the hybrid circuit 7 ₇ and the bandpass filter 7 ₁₆ for F2.
Is supplied to. Therefore, the distance detector 7 ₁₇ detects the absolute position of the succeeding vehicle from the start portion of the second signal transmission path 6 as in the case of the preceding vehicle, and the signal detector 7 ₁₈ Detects that a signal of frequency F2 is being received.

The output signals of the distance detectors 7 ₁₀ and 7 ₁₇ are both supplied to the relative distance detector 7 ₁₉ , which detects the relative distance of the train existing in the section of the second signal transmission line 6. ing. Then, the relative distance detector 7 ₁₉ stops the approach signal transmitted from the approach transmitter 7 ₁₅ via the AND circuit 7 ₁₃ and the approach signal selector 7 ₁₄ when the relative distance reaches the stoppable limit. Control to do. For this reason, the on-board device cannot receive the approach signal received by the ultra-approach receiver 8 ₃ . As a result, ATC device ₈₁ is enabled stop signal has been transmitted from the first signal transmission path, the follower vehicle can be prevented collision with the preceding vehicle will stop.

The twisting point interval may be determined depending on how fine the stop position accuracy is set. The shorter the interval, the better the stop position accuracy. Although the approach speed is the confirmation operation speed, the approach speed may be stopped when the passing speed of the twisting point is detected and the limit position at which the speed can be stopped is reached.

By doing so, the succeeding train can approach the preceding train as much as possible, and can reach the platform in the minimum time when the restart of the operation is permitted, which can contribute to the elimination of the delay.

[Effects of the Invention] As described above, according to the present invention, the following vehicle entering the block split section including the station platform receives the approach signal,
Because you can travel to a distance that can prevent collision with the preceding vehicle,
It is possible to approach the preceding vehicle even in the travel-prohibited section, which has the effect of contributing to elimination of delay.

[Brief description of drawings]

The drawing is a block diagram showing an embodiment of the present invention. 1 ... Closed section, 2 ... Train, 3 ... Station platform, 4 ...
Train detector, 5,6,9 …… Signal transmission line, 7 …… Ground equipment, 7
₁ …… Frequency checker, 7 ₂ …… Signal selector, 7 ₃ …… Frequency switching transmitter, 7 ₄ , 7 ₇ …… Hybrid circuit, 7 ₅ , 7 ₈ , 7 ₁₁ , 7
₁₆ …… Band pass filter, 7 ₆ , 7 ₉ ,, 7 ₁₂ , 7 ₁₈ …… Signal detector, 7 ₁₀ , 7 ₁₇ …… Distance detector, 7 ₁₃ …… And circuit, 7
₁₄ …… Approach signal wave selector, 7 ₁₅ …… Approach transmitter, 7 ₁₉ ……
Relative distance detector, devices on 8 ...... vehicle, 8 ₁ ...... ATC system, 8 _2,
8 ₈ ...... Antenna, 8 ₃ …… Ultra-close proximity receiver, 8 ₄ …… Signal selector, 8 ₅ , 8 ₆ …… Oscillator, 8 ₇ …… Onboard signal transmitter.

Claims (1)

[Claims] 1. A ground device (7), an on-board device (8), a signal transmission line A (6) and a signal transmission line B (9), the signal transmission line A (6) being a station platform (3). The signal transmission line B (9) is arranged in a state of being twisted at a predetermined distance to the closed section including the signal transmission line B, and the signal transmission line B (9) is located farther from the station platform (3) than the signal transmission line (6). is set, the ground device (7), the frequency Shosa device (7 _1), a frequency changer (20), the signal detector (7 _18), the inter-vehicle distance detector (2
1), an AND circuit ( ₇₁₃ ), and an approach signal transmitter (22). The on-board device (8) includes an ultra-approach receiver (8 ₃ ) and an on-board transmitter (23). consists, frequency changer (20) is for delivering the frequency of the signal in accordance with an instruction from the frequency Shosa device (7 ₁₎ from the signal transmission path B (9), the signal detector (7 ₁₈₎ Is for detecting the frequency representing the following vehicle transmitted from the on-board transmitter (23) received by the signal transmission path A (6). The inter-vehicle distance detector (21) is for detecting the signal transmission path A (6). 6) The level fluctuations of the signal from the on-board transmitter (23) of the preceding vehicle and the signal from the on-board transmitter (23) of the following vehicle, the level of which fluctuates each time it passes through the twisting point, are individually counted. The relative distance between the two is calculated from the result, and an approach signal is sent when the relative distance between the preceding vehicle and the following vehicle is a predetermined distance. Ri, proximity signal sender (22) is for delivering the approaching signal from the signal transmission line (6) when the control signal is supplied from the AND circuit (7 _13), the frequency Shosa device (7 _1), drive controls to change the frequency to be transmitted from the frequency changer (20) with the preceding vehicle and a following vehicle, the signal detector (7 ₁₈₎ is approaching the signal sender when it detects a frequency of the following vehicle (22) The AND circuit (7 ₁₃ ) outputs the drive signal output from the frequency checker (7 ₁ ) when the approach signal is sent from the inter-vehicle distance detector (21). It is supplied as a control signal to the transmitter (22), and the on-board transmitter (23) has a frequency that the signal received by the ultra-close receiver (8 ₃ ) at the antenna (8 ₂ ) follows the frequency switching signal. Is transmitted from the antenna (8 ₈ ) and When the signal received from the antenna (8 ₂ ) is a frequency switching signal, the near receiver (8 ₃ ) sends it to the onboard transmitter (2 3).
Supplied to 3), when the received signal is a proximity signal from the proximity signal sender (22) supplies its close signal to the ATC system on the car _(81), ATC device on the car (8 ₁ ) Is an approach type train control device, which sends a command to run at a speed that does not collide with a preceding vehicle when the approach signal is supplied even if a signal to stop is received.