JP2665481B2 - Train length detection method by continuous position detection - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to detection of a train length.

[Prior Art] Conventionally, there has been no idea of using the train length for train control only to detect the train length by an axle counter and use it for railroad crossing control.

[Problems to be Solved by the Invention] However, in a recent new operation control system, a traveling section (closed section) in which safety is guaranteed is determined by using the position of each train on a vehicle regardless of a conventional fixed section. There have been conceived ones that continuously detect and receive this on the ground by radio and give it to each succeeding train as variable distance information, and those that control a train group in a similar manner. In order to detect the position of the train, a method of counting pulses generated in proportion to the number of rotations of the wheels is used.
By placing 4), very accurate position detection becomes possible. In this case, the head position of the preceding train is treated as a point, while the trailing position of the preceding train must be transmitted to the succeeding train. Together with the train position, it becomes extremely important information in train control. Even if the rear end of the train is used as the train position, it is necessary to find the head of the succeeding train, and the problem remains unchanged. The method using the axle detector for detecting the train length requires a monitoring time for one vehicle, and is not only complicated in processing, but also requires processing when traveling at a low speed or stopping halfway. May be suspended or stopped.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a simple and efficient method for detecting a train length by solving the above problems.

[Means for solving the problem]

In order to solve the above-mentioned problem, the present invention includes means for continuously detecting the train position on the ground or on a car, and detecting that the train head has entered the train length detection point by the means. The elapsed time from the time and the travel distance of the train are sequentially recorded in correspondence with each other, and it is detected that the head of the train has entered the train length detection point on the ground, and from that time the rear end of the train detects the same point. Measure the time until detecting that the vehicle has advanced, select the elapsed time closest to the measured time from the recorded elapsed time, and use the train travel distance corresponding to this to determine the train length. Was detected.

Further, the present invention includes a means for continuously detecting the train position on the ground or on a car, detects that the rear end of the train has advanced the train length detection point on the ground, and detects the position of the train at that time. The train length is detected based on the head position.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram of an apparatus according to a first embodiment that enables the present invention, FIG. 2 is a configuration diagram of an apparatus according to a second embodiment that enables the present invention, and FIG. FIG. 9 is a configuration diagram of the device of the third embodiment when there is an error. In these embodiments, the train position represents the head of the train and is assumed to be continuously detected. In Example 1 of FIG. 1, when the leading portion of the approaching train 1a senses the sensor 2 installed at the train position detection point, the time measuring device 3 starts measuring, and the train advances to the position of the approaching train 1b. When the sensor 2 stops responding, the measurement is terminated, and the measurement time during that time is transmitted to the vehicle via the ground-based control device 4 and the information transmission means 5a on the ground and the information transmission means 5b on the vehicle. I do. The train length detection point is set in advance in the on-vehicle control device 6 as data. Immediately after the train head reaches the same point, from that point onward, as the train moves, the train length is detected at a certain distance that satisfies the required accuracy. The elapsed time and the number of times of writing are recorded in the recording table 7 of the same device. When receiving the measurement time transmitted from the ground,
The value of the elapsed time closest to that time is selected from the recording table 7, and the movement distance obtained by multiplying the number of writing times corresponding to the value by the above-mentioned constant distance is set and recorded as the detected train length L. The recording in the table 7 ends when the measured time from the ground is received or when the number of times that the moving distance becomes a sufficient length is recorded. In this case, a recording table 7 for recording the elapsed time and the number of times of writing in the ground controller 4
It is also possible to set the train length detection point in advance and detect the train length by receiving the train position of the train from the vehicle via the transmission means. As the information transmission means, a radio (including an induction radio), a transponder, a loop coil, or the like can be used.

In Embodiment 2 of FIG. 2, when the sensor 2 and the rear end detector 8 of the train detect the rear end of the train, they are immediately transmitted to the control device 4 on the ground, and immediately on the vehicle via the information transmission means 5a and 5b. Is transmitted to The control device 6 on the vehicle subtracts the position of the preset train length detection point from the train position when the signal of the rear end detection of the train transmitted urgently from the ground is received, and calculates the train length L. Record the required settings. In this case, it is also possible to detect the train length by the above-mentioned method by receiving the train position of the train at the control device 4 on the ground via the information transmission means. In the calculation of the train length in the second embodiment, the transmission delay time is constant or detectable, and this can be easily corrected. In this case, wireless communication is used as the information transmission means.

In the above two embodiments, the sensor 2 is an ultrasonic sensor,
A microwave sensor, a track circuit, a combination of a wheel sensor and a track circuit, a rail current sensor of a loop circuit with a rail and an axle, and the like can be used.

3, a marker detecting device for detecting the marker 9 installed on the ground is attached to the front and rear of the train, the front device 10 detects the marker 9, and the rear device 11 is Distance L 'moved until marker 9 is detected
The train length L is recorded and set by adding the known lengths 12 and 13 from the front device to the train head and from the rear device to the rear end of the train. In this case, two marker detection devices are required, and it is necessary to connect these with a conductor.

[Effect of the Invention] As described above, the train length and the train length are very important control information in the new control method. Conventionally, a method capable of reliably detecting this under any conditions has not been established, but the present invention has made it possible by adding a simple device to the new control method.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram of a first embodiment of the present invention, FIG. 2 is an explanatory diagram of a second embodiment of the present invention, and FIG. 3 is a third embodiment of the present invention. It is explanatory drawing of an example. 1a …… Incoming train, 1b …… Outgoing train, 2 …… Sensor, 3…
... Time measuring instrument, 4 ... Ground control device, 5a ... Ground information transmission means, 5b ... Vehicle information transmission means, 6 ... Vehicle control device, 7 ... Recording table, 8 ... Train rear end detector, 9 Marker, 10 Front marker detection device, 11
Rear marker detection device, 12: length from front marker detection device to the head of train, 13: length from rear marker detection device to rear end of train, 14: marker for correction, 15: train Long detection point, L: Train length, L ': Marker detection device installation interval

Continuation of the front page (72) Inventor Haruo Yamamoto 3359, Shinyoshida-cho, Kohoku-ku, Yokohama-shi, Kanagawa Prefecture 10 Joint panel Referee Chief Yoshio Kimura Referee Yoshiyuki Shimonaka Referee Mitsuo Shiraishi (56) References JP-A-58-213204 JP, A) JP-A-2-111206 (JP, A)

Claims (2)

(57) [Claims] A means for continuously detecting the position of the train on the ground or on a car, detecting that the head of the train has entered a train length detection point, and detecting the elapsed time from the time and It sequentially records the distance traveled by the train in correspondence with it, detects that the head of the train has entered the train length detection point on the ground, and from that time until it detects that the rear end of the train has advanced to the same point The time is measured, and the elapsed time closest to the measured time is selected from the recorded elapsed time, and the continuous position detection that detects the train length with the moving distance of the train corresponding thereto is performed. Train length detection method. 2. A means for continuously detecting a train position on a vehicle by measuring an axle rotation pulse or the like, and detecting and detecting that the rear end of the train has advanced a train length detection point on the ground. The train position detection point position transmitted from the ground or the train length detection held in advance as data on the vehicle from the head position of the train detected by the train position detection means at that time Train length detection method by continuous position detection that detects train length by subtracting point positions.