JPH07186966A - Train approach detector - Google Patents

Abstract

PURPOSE:To get rid of any crossing closure time of more than necessity by calculating a braking distance from the braking performance of a train and some conditions of a route, and determining the extent of control timing in a control point by the braking distance, train speed and a distance of up to the train and this control point. CONSTITUTION:A sensor 2 on a train detects the speed of its own train in succession, and an operational part 6 calculates a braking distance from speed, braking performance and route data at that time. On the other hand, an integrating part 3 integrates the extent of output from the speed sensor 2 successively, recognizing the current position, and the current position of a train, the current speed and the braking distance are all transmitted to the ground from the onboard via a transmitting apart 9 and a transmitting antenna 10. In this constitution, control timing in a control point is determined at such timing as satisfying those of relations of xd=xb+v/3.6Xt1 between time t1 till elimination of an obstacle after control starting is checkable and a distance xd between crossing and train as well as between a train speed V and a train braking distance xb.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for efficiently controlling various devices that affect the running of a train when the train approaches the vehicle while maintaining safety.

[0002]

2. Description of the Related Art In various railway systems, a railroad crossing is a typical example of controlling by knowing the approach of a train. At railroad crossings, there are many systems that detect the approach of a train, sound an alarm in advance, and lower the gate after a certain period of time.

Conventionally, a train detection device, which is placed a certain distance in front of a railroad track, detects approach of a train, sounds an alarm, and outputs a command to lower a breaker. Ideally, the railroad crossing should ring at a certain time before the train passes.
If the time is short, it is dangerous, and if it is longer than necessary, the road will be blocked for a long time, which will adversely affect road traffic. However, if the position of train detection is always constant regardless of the speed of the train, from the viewpoint of safety, in order to secure the minimum time to operate the level crossing, the highest driving speed on the track It is necessary to place this detection device at a position far enough to ensure sufficient time for the train. However, if the detector is placed in such a position,
Even for a slow train, control of the railroad crossing is started from the same position, so that the railroad crossing will be blocked for an unnecessarily long time before passing through the railroad crossing.

In order to solve this problem, the 29th National Cybernetics in Railways Symposium Proceedings (1
December 992 Japan Railway Cybernetics Council) "ATS-P level crossing time control device (p474-p
478) ”, for each train type, that is,
It has been proposed to install a train detection device that has the function of distinguishing each type of car by dividing it into speeds such as express and express trains, at the farthest point for express trains, at a closer point for express trains, and usually at a level crossing. ing.

[0005]

It is good if the train is always driven at a speed according to each vehicle type, but considering the time when the train is blocked, such as during a rush hour, even an express train may run at a low speed. In many cases, the alarm started to sound at a fairly distant point, so the railroad crossing would be closed for an unnecessarily long time, impeding road traffic.

[0006]

[Means for solving the problems] In consideration of the actual speed of the train and the braking distance required to stop the train, the control start timing is given in consideration of all of these information in order to perform the optimum train approach control. I did it.

[0007]

[Operation] Since the control circuit timing is given according to the train, it is possible to eliminate an unnecessary crossing time.

[0008]

FIG. 1 shows an embodiment of the present invention.

A sensor 2 for detecting the current train speed is provided on the vehicle so that the speed of the own train can be sequentially detected. Further, in the calculation unit 6, if the brakes are applied from that point on, how many meters can be stopped can be calculated from the speed at that time, the vehicle performance data including the braking performance, and the route data of the sloped voice. .

On the other hand, the integrating section 3 successively integrates the outputs from the speed sensor and always recognizes the current position.

From the car to the ground, the current position of the train, the current speed, and the distance (brake distance) at which the train will stop if the brake is applied from that point will be transferred to the ground via the transmitter 9 and the transmitter antenna 10. To transmit.

At the railroad crossing, it is necessary to cut off the road traffic, insert the time when it can be confirmed that the obstacle is completely removed from the track, and determine the time to activate the alarm. That is, when it is confirmed that the obstacles have been removed, the distance between the railroad crossing and the train, that is, the current position of the train transmitted from the train, and the distance between the positions of the railroad crossings, so that the braking distance does not become shorter, Need to control.

It is assumed that the time from the start of control until the removal of the obstacle can be confirmed is t1, the distance between the railroad crossing and the train is xd, the train speed is v, and the train braking distance is xb. In order to perform control so as to maintain the above relationship, control may be started at the timing that satisfies the following equation.

[0014]

## EQU00001 ## xd = xb + v / 3.6.times.t1 (1) FIGS. 2 and 3 show an embodiment of the ground equipment. As shown in FIG. 2, the ground device receives data from the vehicle via the receiving antenna 11. Then, the ground device 12 determines the condition, and outputs the start signal 15 to the level crossing alarm 13 and the circuit breaker 14. An internal block diagram of the ground equipment is shown in FIG. The receiving device 16 receives the data, and takes the difference between the railroad crossing position read from the data scale and the train day. On the other hand, the right side of the equation 1 is calculated by the calculating unit 18, the judging unit 19 judges from the relationship between the two whether the alarm should be started, and when both match, the alarm starting signal 15b is output. , Command the start of the circuit breaker after a certain period of time.

According to the present embodiment, it is possible to carry out control for a train of any speed so that the railroad crossing is not blocked for an unnecessarily long time.

FIG. 4 shows another embodiment. The present embodiment is directed to a station interlocking device as control other than railroad crossing. The interlocking device is mainly related to control of a branching machine at a station. In the interlocking device, prior to the train entering the station yard, the train is known, for example, from which line of the station it will reach, and the route is drawn.
That is, it is necessary to control the necessary branching machine and set the route that allows the train to reach the track. Also, after the train approaches the route or branching machine, the route (branching machine)
Is not to be changed. This is because the allowable speed is usually different depending on the route, and if the route changes immediately before the branching machine for the traveling train, even if the brake is applied, the speed will be reduced to the speed limit. This is because there is a possibility that it may not be possible, and there is a risk of derailment if passing at high speed with insufficient deceleration.

Set a route when a train approaches,
The route should be clearly indicated to the train, and the route should be fixed (locked) after the train approaches, so that the route is not accidentally changed.

At this time, in consideration of the distance at which an approaching train can stop, a logic must be provided that must never be changed if the course change point (branch) is before this distance. Is effective.

The control timing in the case of the interlocking device is the same as in the above-mentioned example.

After the start of the route setting control, the time until the operation of the branching machine is completed and the route can be confirmed is t2, the distance between the start point of the route control target section and the train is xd, the train speed is v, and the train speed is The braking distance is xb.

[0021]

## EQU00002 ## xd.gtoreq.xb + v / 3.6.times.t2 (2) When the expression 2 is satisfied, the course can be changed and set. If the route is set as soon as possible before the train arrives and without impairing the progress of the train,
It can be seen that it is better to give a path setting instruction when the right and left sides are equal.

Also, although it was mentioned above that the course should not be changed after the train approaches the station to some extent, the condition is given by the equation 3, and the course is changed while this condition is satisfied. should not be done.

[0023]

## EQU00003 ## xd.ltoreq.xb (3) According to the present embodiment, when the course control is performed by the interlocking device, efficient control can be performed without impairing safety.

[0024]

According to the present invention, a control point on a line can be efficiently controlled without impairing safety.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment showing an on-vehicle device configuration of the present invention.

FIG. 2 is an example showing a configuration on the ground of the present invention.

FIG. 3 is an example of a detailed block diagram on the ground of the present invention.

FIG. 4 is an explanatory diagram of another embodiment.

FIG. 5 is a block diagram of another embodiment.

[Explanation of symbols]

1 ... train, 2 ... speed sensor, 3 ... accumulation section, 4 ... vehicle performance data, 5 ... route data, 6 ... calculation section, 7 ... train speed signal, 8 ... brake distance information, 9 ... transmission section, 10 ... transmission antenna.

Claims (5)

[Claims] Claim: What is claimed is: 1. A train position and speed detection means, a braking distance calculation means based on the braking performance of the train and a condition of the train, a certain control point on the train track and a distance to the train. A train approach detection device which recognizes and determines a control timing at a control point based on a braking distance, a train speed, and a distance between a train and a control point. 2. A means for detecting the position and speed of a train provided on the vehicle, a means for calculating a braking distance from the braking performance of the train and conditions of the route, and a means for transmitting information on the vehicle to the ground. And recognizing the distance to a train and a specific control point on the track, and determining the control timing at the control point by the braking distance, the train speed, and the distance between the train and the control point. Train approach detection device. 3. A means for detecting the position and speed of a train provided on the vehicle, a means for calculating a braking distance from the braking performance of the train and conditions of the route, and a means for transmitting information on the vehicle to the ground. And the distance to the railroad crossing is recognized, and the control timing of the railroad crossing is based on the braking distance, the train speed, the distance to the train and the railroad crossing, and the time from the start of the railroad crossing to the confirmation of the elimination of obstacles at the railroad crossing. A train approaching detection device characterized by giving: 4. A means for detecting the position and speed of a train provided on the vehicle, a means for predicting a braking distance from the braking performance of the train and conditions of the route, and a means for transmitting the information on the vehicle to the ground. And recognizing the control section of the interlocking device at the station and the distance to the train, and determining the route setting timing of the interlocking device from the braking distance, the train speed, the control section and the distance to the train. Train approach detector. 5. The braking distance according to claim 4,
A train approach detection device that gives a condition for prohibiting change of course based on the distance between the control section and the train.