JP2000247235A - Hybrid type train position detecting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sharply improve detection precision by adding a speed meter generator error learning means, a ground piece error learning means and an axle rate gyroscope output signal input and rate gyroscope error learning means, finally inputting map data, and determining the absolute position of a train. SOLUTION: The correction by speed meter generator error learning 14 is added to the position calculation error correction 5 of distance calculation 3 by an axle speed meter generator 1 to correct the absolute position (1) 6, and the correction by ground piece error learning 15 is added to the position calculation error correction 11 by a ground piece 8 and a vehicle piece 9 to correct the absolute position (2) 12. Gyroscope error learning 23 is added to the position calculation error correction 20 based on the acceleration detection 17 of a rate gyroscope 16, speed calculation 18 and distance calculation 19 for hybrid correction to obtain the absolute position (3) 21. A map data input is newly added to the absolute positions (1), (2), (3), and the true absolute position 13 is finally determined.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for detecting a train position on a railway, and more particularly to a method for detecting a train position of a hybrid system.

[0002]

2. Description of the Related Art Conventional automatic train operation (ATO) for railways.
At present, train position detection, which is basically important in pattern control and pattern control, is performed by distance calculation using the output of a speedometer generator (tachogenerator), as shown in FIG. The correction was performed by a signal.

That is, in FIG. 2, reference numeral 1 denotes a speedometer generator (tacho generator) driven from a wheel axle of a train via a suitable transmission means, and its output rotational speed pulse or voltage is input 2. Thus, the absolute position 6 is obtained through the distance conversion 3 including the correction 4 due to the change in the wheel diameter and the position calculation error correction 5, and the absolute position 13 is obtained through the numerical reliability determination means 7. The position calculation error is corrected using a transponder 10 that detects the frequency signal of the grounding element 8 by the variable-frequency oscillator of the vehicle mounting element 9 by, for example, a variable-speed ATS method using the grounding element 8 and the vehicle-mounted element 9. Thus, the absolute position 12 is obtained, and the absolute position 13 is determined by correcting the absolute position 6.

[0004]

However, in the above-described conventional method, the output accuracy of the speedometer generator 1 generally decreases in a low-speed region. However, there is a problem that a stop position error of, for example, 10 m or more may occur in the fixed position stop or the like.

As a method of solving these problems, it is conceivable to increase the number of revolutions input to the speedometer generator 1 in a low-speed region of the train. It was not running because of another problem.

For the above reasons, this type of conventional train position detection method cannot be used for a large-scale system having a maximum speed exceeding 100 km / h, such as a bullet train.

The present invention has been made in view of the above situation, and has as its object to provide means for greatly improving the accuracy of this type of train position detection.

[0008]

SUMMARY OF THE INVENTION Accordingly, in the present invention, an object of the present invention is to achieve the above object by providing a hybrid train position detecting method described below.

In the method for detecting the position of a train on a railway, the speedometer generator error learning means and the ground child error learning means are added to the output signal input of the speedometer generator of the train axle and the signal input of the ground child, respectively. A train position detection of the hybrid system, characterized by adding a rate gyro output signal input of the axle and a rate gyro error learning means, and finally determining an absolute position of the train by inputting map data. Method.

[0010]

According to the configuration of the present invention as described above, the absolute position accuracy of the train is obtained by adding acceleration detection by the rate gyro, comparison and correction by input collation of map data, and learning of each error to the conventional method. Is greatly improved, and can be used for ATC of higher-speed large-scale systems.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail based on an embodiment with reference to the drawings.

[0012]

FIG. 1 shows a processing flowchart of a hybrid train position detecting method according to the present invention, in which the same (corresponding) processing elements as those in FIG.

In this embodiment shown in FIG. 1, the detailed description of the same parts is omitted as compared with the conventional example shown in FIG. 2, but 1) the axle speedometer power generation described in FIG. The absolute position 6 is corrected by adding the position calculation error correction 5 by the distance calculation 3 by the machine 1 to the error correction by the error learning 14 of the speedometer generator 1, and 2) the ground position described with reference to FIG. The absolute position 12 is corrected by adding the error correction by the ground child error learning 15 to the position calculation error correction 11 by the child / vehicle child 8/9. 3) Furthermore, the hybrid type When the absolute position 21 is obtained by correcting the position calculation error correction 20 based on the speed / distance calculation 18/19 based on the acceleration detection by the rate gyro 16 and the gyro error learning 23 in addition to the two factors. 4) Further, the respective absolute position ,, are newly adds the map data input 24, finally characterized by being configured to determine the true absolute position 13.

As described above, the conventional speedometer generator 1
In addition to the distance calculation using the output of the above, the acceleration information by the rate gyro 16 is added to the hybrid system in addition to the correction by the ground element 8, and the error of each of the speedometer generator 1, the ground element 8 and the rate gyro 16 is Learning 1
4, 15 and 23, the position calculation error of each absolute position is corrected, and the final absolute position 13 is newly determined by the map data input 24. Thus, a much higher accuracy, for example, a train position detection accuracy in units of 10 cm can be obtained over the entire speed range.

[0015]

As described above, according to the present invention,
In addition to the conventional method of correcting the output of the speedometer generator, which has been used for train position detection, which is basically required for ATO control of railways, by means of the grounding element, the learning of the speedometer generator error and the grounding element error have been added. In addition, in addition to the acceleration detection and gyro error learning by the rate gyro in a hybrid manner, and further configured to input and correct the map data for the absolute position determined as described above, far more than conventional High-precision train position detection is now possible.

[Brief description of the drawings]

FIG. 1 is a process flowchart of a hybrid train position detecting method according to an embodiment;

FIG. 2 is a processing flowchart of a conventional train position detection method.

[Explanation of symbols]

 Reference Signs List 1 speedometer generator 5, 11, 20 position calculation error correction 6, 12, 20 absolute position, 8 ground child 9 vehicle upper part 13 absolute position determination 14 speedometer generator error learning 15 ground child error learning 16 rate gyro 23 Gyro error learning 24 Map data input

Claims (1)

[Claims] 1. A train position detecting method for a railway, wherein said speedometer generator error learning means and said ground child error learning means are added to an output signal input of a speedometer generator of a train axle and a signal input of a ground child, respectively. By the hybrid method, a rate gyro output signal input of the axle and a rate gyro error learning means are added,
A hybrid train position detecting method, wherein the absolute position of the train is finally determined by inputting map data.