JPH03103008A - Automatic train controller - Google Patents

Abstract

PURPOSE:To control trains safely by comparing the actual train speed with a lower one of the limit speed in train stop section or the limit speed to be determined based on the interval between trains and performing speed control of train based on the comparison results. CONSTITUTION:An operation processing means 8 operates the distance upto a train stop position based on information fed from a train location information input means 6 and a speed signal obtained based on a signal fed from an axle rotation detecting signal input means 4 and information fed from a wheel diameter information input means 5, and further operates the distance upto the stop position based on information fed from a train interval detecting signal input means 7. When one of the distances is shorter than a specific distance, a brake output means 2 produces a brake command for decelerating the train speed to a predetermined limit speed accordingly to the operated distance. By such arrangement, train can be stopped safely in a stop section without causing collision against a preceding train.

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to an automatic train control device.

(Prior Art) Conventional automatic train control devices detect the vehicle speed of the train based on the axle rotation speed based on the speed limit signal from the receiver, and if this speed exceeds the speed limit, the The speed is controlled by giving a braking command to the braking device until the speed becomes below the speed limit signal.

This speed limit is controlled by ground signals for each specific distance section.

Therefore, if a certain section is set as a stop signal section and the ground signal is controlled in order to stop the train, the train is stopped by the automatic train control device.

(Problem to be Solved by the Invention) However, in such conventional automatic train control devices, the length of the signal section is not constant depending on the interval between stations, etc. If an attempt was made to stop the train, the signal section would always have to be of a constant length, which was impractical. For this reason, conventional automatic train control devices have only been used for braking and stopping for safety reasons.

However, in recent years, in railway transportation, there is a large difference in transportation volume between morning and evening and daytime hours, so in order to make effective use of trains, it has become necessary to divide and merge vehicles to increase or decrease the growth of train units, and to make adjustments. The degree of this is increasing. On the other hand,
For safety reasons, speed limit sections are set up to prevent trains from colliding with each other, and the distance between trains is controlled to always be safe.

Therefore, when merging trains, this safety distance had to be determined by humans, but this had the problem of increasing the labor burden on the workers.

This invention was made in view of these conventional problems, and is an automatic train control system that can control trains so that they can move as close as possible to each other while avoiding the risk of train collisions. The purpose is to provide equipment.

[Structure of the Invention] (Means for Solving the Problems) The automatic train control device of the present invention has a means for inputting train point information, a means for inputting a distance-to-train detection signal, and an input means for inputting an axle rotation speed detection signal. a means for inputting wheel diameter information, a braking output means, train point information from the train point information input means, an axle rotation speed signal and an input of the wheel diameter information from the axle rotation speed detection signal input means. The distance to the train stop position is determined based on the wheel diameter information from the means and the speed signal obtained from the means, the distance to the stop position is determined based on the train distance information from the train distance detection signal input means, and the distance between these distances is calculated. The system also includes arithmetic processing means for outputting a braking command from the braking output means in order to decelerate the train to a predetermined speed limit according to the distance when one of the train speeds becomes less than a certain distance.

(Function) In the automatic train control device of the present invention, the arithmetic processing means inputs the train point information from the train point information input means, the axle rotation speed signal from the axle rotation speed detection signal input means, and the wheel diameter information from the input means. The distance to the train stop position is determined based on the wheel diameter information and the speed signal obtained from the wheel diameter information, and the distance to the stop position is determined based on the train interval information from the train interval detection signal input means.

If one of these distances is less than a certain distance, a braking command is output from the braking output means to decelerate the train to a predetermined speed limit according to that distance, and the train collides with the preceding train. The train can be safely stopped within the stopping zone without any problems.

(Example) Hereinafter, embodiments of the present invention will be explained in detail based on the drawings.

FIG. 1 shows an embodiment of the present invention, in which an automatic train control device 1 includes a brake output means (hereinafter referred to as Do) 2 for applying necessary braking to a brake control device, and a control device from the ground. A speed limit signal input means (hereinafter referred to as Dla) 3 that inputs a speed limit signal from a receiver that receives the speed signal, and a rotation speed detection signal from an axle rotation speed detection device for obtaining the rotation speed of the wheels. An axle shaft rotation speed signal input means (hereinafter referred to as "Pla") 4 for inputting an axle rotation speed signal, and a wheel diameter information input means (hereinafter referred to as SW) for inputting wheel diameter information to obtain speed and distance from the wheel rotation speed. ) 5.

The automatic train control device 1 further includes a point signal input means (hereinafter referred to as DIb) 6 that inputs a point signal from a receiver that receives point information from the ground, and a train distance detection device that detects the distance between trains. It is provided with a train interval input means (hereinafter referred to as Plb) 7 that inputs a train interval signal from a train, and an arithmetic processing means (hereinafter referred to as PU) 8 that performs train speed control processing.

Further, in FIG. 1, 9 is a receiver that provides a speed limit signal, 10 is an axle rotation speed detection device that provides an axle rotation speed detection signal, 11 is a train distance detection device that provides a distance between trains, and 1
2 is a receiver that provides a point signal, 13 is a brake controller that performs braking, and 14 is a vehicle.

Next, the operation of the automatic train control device having the above configuration will be explained.

As shown in the flowchart of FIG.
First, wheel diameter information is input from SW5 (step Sl
).

Next, axle rotation speed information is input from PIa4, and vehicle speed is calculated by taking wheel diameter information into consideration (steps S2 and S3).

Next, input the speed limit signal from the receiver 9 from DI a3 (step S4), input point information from DI b6,
Calculate the speed limit as shown in FIG. 4 (step S5
). In addition, in this Fig. 4, while controlling at the speed limit of 30 Km/h in the 30 Km/h speed limit section, the distance L1 to the speed limit of the next section is obtained as point information, and the axle rotation speed and A case is shown in which the distance is determined based on the wheel diameter, subtracted from the distance L1, and the train is controlled at a speed limit according to the determined distance.

Next, the obtained speed limit and vehicle speed are compared (step S
6) If the vehicle speed is not below the speed limit, a brake command is output and control is performed to reduce the vehicle speed (Step S7).

Similarly, receiving the inter-train interval detection signal from PIb7, the fifth
The speed limit according to the interval distance shown in the figure is calculated (step S9), compared with the vehicle speed (step S10), and if the vehicle speed is less than the limit speed, a brake command is output and control is performed to reduce the vehicle speed. (Step S11).

The brake command from PU8 is given to brake control device 13 via DO2, and the train is braked.

In this way, a speed limit based on point information and a speed limit based on the distance between trains are set, and if the speed of the train is greater than the smaller speed limit, brake output is applied to bring the speed below the speed limit. In order to control the train by multiplying this, it is possible to control the train with a greater degree of safety while narrowing the distance between trains.

In the above embodiment, the same effect can be obtained by using a receiver that transmits speed limit and point information signals in a time-division series manner and an input means for receiving the signals. Further, a pulse detector, a speed generator, etc. can be used to detect the axle rotation speed. Furthermore, by using a program processing device such as a microcomputer as the arithmetic processing means, it becomes possible to perform brake control processing using a software program.

Furthermore, similar effects can be obtained by using input means suitable for parallel signals, serial signals, etc. for the inter-train interval information.

[Effect of the Invention J As described above, according to the present invention, the speed of the train is determined by comparing the actual vehicle speed of the train with the smaller of the speed limit in the train stopping section and the speed limit determined from the distance between trains. Since the control is performed, trains can be safely merged using this automatic train control device, and the labor burden on workers when merging trains can be reduced.

Furthermore, since the vehicle speed of the train can be controlled using a speed limit according to the distance between trains, trains can be operated with closer distances between trains, thereby increasing transportation capacity during normal operation.

[Brief explanation of drawings]

FIG. 1 is a block diagram of one embodiment of the present invention, FIG. 2 is a flowchart explaining the operation of the above embodiment, and FIG. 3 is a graph showing the speed limit curve in the train stop section of the above embodiment. FIG. 4 is a graph showing a speed limit curve according to the distance between trains in the above embodiment. 1... Automatic train control device 2... Brake output means (DO) 3... Speed limit signal input means (Dla) 4... Axle rotation speed detection signal input means (PIa) 5...・Wheel diameter information input means (SW) 6...Point information input means (Dlb) 7...Train distance detection signal input means (Plb) 8...
・Arithmetic processing unit (PU)

Claims (1)

[Scope of Claims] An input means for train point information, an input means for a train spacing detection signal, an input means for an axle rotation speed detection signal, an input means for wheel diameter information, a braking output means, and the train point. The speed signal obtained from the train point information from the information input means, the axle rotation speed signal from the axle rotation speed detection signal input means, and the wheel diameter information from the wheel diameter information input means allows the train to reach the stop position. The distance to the stopping position is determined based on the train interval information from the train interval detection signal input means, and if one of these distances is less than a specific distance, the distance is determined in advance according to that distance. an automatic train control device comprising: arithmetic processing means for causing the braking output means to output a braking command in order to decelerate the train to a set speed limit;