JPH04201673A - Train interval control method - Google Patents

Abstract

PURPOSE:To enable the control of a train interval such as blocking due to a motion to be realized by arranging axle detectors having speed detection capability at two positions separated from each other by the maximum value or more of a distance between adjacent axles of one vehicle. CONSTITUTION:The control method in the title applies to the case where an axle detector capable of detecting train speed is provided at two positions for measuring train length. When a distance (d) between axle detectors P1 and P2 is set to be longer than the maximum value SMAX of adjacent axles of one vehicle, the number of axles counted with the detectors P1 and P2 do not agree to each other, until all axles pass the detector P1 following the leading axle. The passage of the trailing end axles can be identified, when the count values of the detectors P1 and P2 become equal to each other.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of application of M soil collection) The present invention relates to one-train spacing control for detecting the rearmost part of a train in a railway. (Prior technology) Track circuits are widely used to detect the position of 0 trains, which is the basis for controlling train spacing. There is a check-in/check-out method using a train, a method of installing cross-guide lines between tracks and counting the pulses generated at intersections, and a method of detecting the position of the own train on the train from the number of rotations of the axle.

(Problem to be solved by the invention) Position detection accuracy, especially the detection accuracy for the rear of the train.

In the track circuit method, it is determined by the track length, and in the check-in/check-out method, it is determined by the interval between the check points. Therefore, in order to precisely detect the rear part of a train, it is necessary to divide the track circuit length into shorter sections or shorten the check-in/check-out interval. On the other hand, there is a method that detects the leading position of a train based on crossing guide lines or axle rotation speed.

The head of the train can be detected in detail, but in order to detect the tail of the train, the length of the train must be known, and this is often input manually from onboard the train. When divisions and mergings of trains are frequently performed and the growth of trains changes in various ways, there is a risk that input errors may occur if input is performed by nine people. It is extremely dangerous to control train spacing based on incorrect train lengths.

(Means for Solving the Problem) Therefore, in order to provide a method for reliably and automatically measuring the length of one train using only ground equipment that controls the distance between trains, the present invention has been developed to measure the distance between adjacent axles of one train. Axle detectors capable of detecting speed are placed at two locations separated by more than the maximum value, and the axle detector on the approach side of one train counts the number of axles, and the axle detector on the departure side counts the number of axles, and at the same time The distance from the leading axle of the train is accumulated from the passing speed and the passing time between the two axles, and when the number of axles on the advancing side becomes the same as the number of axles on the approaching side, it is determined that the axle is the last axle, and the axle is moved from the leading axle to the final axle. The feature is that the train length is measured by calculating the distance to the train, and from then on, the position and speed of the front and rear of the train are detected by detecting only the train head position and speed.

(Function) Using the present invention, it is possible to reliably measure one train length, and after measuring nine train lengths, if only the leading position of the train is detected in detail, the rear position of the train can also be detected with the same accuracy, and the train length can be measured in detail. Interval control becomes possible.

(Example) An example of the present invention will be described using the drawings. Figure 1 shows a case where axle detectors capable of detecting speed are installed at two locations to measure train length. 1 if the distance d between axle detectors is set larger than the maximum value S MAY of the distance between adjacent axles in one train.
The number of axles counted by axle detectors Pl and P2 will not be equal from the time the leading axle of the train passes PI until all the axles have passed. Therefore, when the count values of PI and P2 become equal, It can be determined that it is the rearmost axle of the

Figure 2 shows a case where the train length is measured by combining one axle detector P capable of detecting speed and the track circuit TR. The number is counted, and when the track circuit TR operates, it is determined that all axles have passed.

The method of measuring the train length after the number of axles has been detected is explained using Figure 3.The speed when the i-th axis of the 0th train passes the axle detector is vi, and when the first axle passes the to (i+
1) If the time it takes for the axis to pass is 1 (1+1+1), the distance S (i, i+1) can be approximated by equation (1).

S(1,i+1)=0.5 (v++v+-t)
t(iei+1)・-------------
--- (1) When the total number of axles of the train is N, the distance 11ts (1, N) from the leading axle to the rear axle is expressed by equation (2).

S (1, N) = s (i, i + t) -------
−−−−−−−−−−(2) Therefore, if the distance from the leading axle to the top of the car body is a, and the distance from the rearmost axle to the rearmost part of the car body is b, then the length of the 9 train is calculated by the formula ( 3).

L = S (1, N) + a + b −−−−−
(3) Once the train length is measured, it is possible to control the train spacing by measuring only the leading position of the train.

Figure 4 shows that two axle detectors capable of detecting speed are placed at the entrance of the control section to measure the train length, and then the axle detectors capable of detecting speed are used to measure only the position and speed of the head of the train. It is a figure when performing control. The train length of the preceding train T2 is determined by the axle detector PI.

Axle detector P7 is measured when passing P2.
The leading train Q3 of the preceding train T2 is detected, and the position speed of the rearmost train Q2 is detected from that value and the train length.

The position and speed of the leading Q1 of the following train TI is detected by the axle detector P2, and the train spacing is controlled based on a speed control pattern called vP.If each axle detector is arranged at a shorter interval than the train length, nine trains can be Since the train is located on at least one axle detector, the position of the train can be continuously detected with high accuracy.

(Effect of the invention) By using the present invention, it is possible to reliably measure the length of one train, and as a result, if only the leading position of one train is detected in detail, the rear part can also be automatically detected with the same degree of accuracy. , train spacing control such as moving blocks, etc. FIG. 1 is a layout diagram of a device for measuring the total number of axles of a train using an upper axle detector that can detect speed.

FIG. 2 is a block diagram of a device for measuring the total number of axles of a train using a track circuit and an axle detector. FIG. 3 is a diagram showing the relationship between the distance between axles and the length of the train. FIG. 4 is a diagram when train interval control is performed using an axle detector capable of detecting speed.

T・-111−−−−・−−−−・Train D・−−−
---------・Train direction P, Pl-P7
--Axle detector d that can detect speed ------1--
-----・Distance between axle detectors S MAX ・------
---Maximum distance TR between one adjacent axle-----
------Pa orbital circuit Kl, K2-----
Track circuit boundary 1.2. i, j+I, N-1, N Number of axes from the beginning S (i, i+1) ----- Distance from the first axis to the (1+1) axis S (1, N) ----
---・Distance a from the leading axis to the rear axis・----
−1−−−−−−・Distance b from the leading axle to the top of the vehicle body
・−−１１−−−−−−−−−−・Distance L from the rearmost axle to the rearmost part of the car body・−−１−−−−−−−−−−−・Train length S・−１ −
−−・−−−−−−−1 station Ql −・・−−−−−−1−−・Top Q of the following train
2 ------------Rearmost part of the preceding train Q3
−1−−−−−−−−−・First VP of the preceding train−−
−−−−−−−−−・Speed control pattern Patent applicant Railway Technology Research Institute Figure 1 SMA! P.I.
PiFigure 2Figure 3Figure 1To1 i+1 1
ff1l Figure 4

Claims (2)

[Claims] (1) Axle detectors capable of detecting speed are placed at two locations separated by more than the maximum distance between adjacent axles of one train, the axle detector on the train approach side counts the number of axles, and the axle on the exit side is detected. The device counts the number of axles, and at the same time adds up the distance from the train's leading axle based on the passing speed of each axle and the passing time between the two axles, and the number of axles on the advancing side becomes the same as the number of axles on the approaching side. When the last axle is detected, the distance from the first axle to the last axle is calculated to measure the train length, and from then on, only the leading position and speed of the train are detected to detect the position and speed of the front and rear of the train. Train spacing control method. (2) One axle detector capable of detecting speed was placed inside the track circuit, and the distance from the train's leading axle was integrated based on the passing speed of each axle and the passing time between the two axles, and the track circuit was activated. Sometimes, it is determined that all axles have passed over the axle detector, and the distance from the first axle to the last axle is calculated to measure the train length. From then on, only the leading position and speed of the train are detected. A train spacing control method characterized by detecting forward and backward position and speed.