JP4193010B2 - Train stop detection device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention uses a non-contact type distance sensor to monitor a change in the distance to the train, and when the amount of displacement becomes almost zero, it detects that the train has stopped and turns on the guidance signal. The present invention relates to a train stop detection device.
[0002]
[Prior art]
When adding trains for train formation, etc., as shown in FIG. 4, with the preceding train (joined train) 1 stopped, the subsequent train (joint train) 2 is entered and connected. is doing. In such a case, the on-site traffic signal 3 has the preceding combined train 1 in one track circuit and is stopped, so that the following combined train 2 is in the track circuit in order to avoid a collision accident with this. No progress has been made to prevent entry into That is, the traffic light 3 in the field displays a red signal. Therefore, as it is, the succeeding combined train 2 cannot enter the track circuit where the preceding combined train 1 is present permanently. Therefore, on the condition that the on-site traffic signal 3 does not show progress, and on the premise that there is a coupled train on the route, the guidance signal 4 for allowing the subsequent coupled train 2 to enter the one track circuit at a slow speed. Is provided separately from the on-site signal device 3 to instruct the progress of the following combined train 2. In addition, in order to confirm safety, the guidance signal device 4 does not instruct the progress unless it confirms that the subsequent combined train 2 has once stopped at a predetermined position.
[0003]
Conventionally, the operation of confirming that the subsequent combined train 2 is temporarily stopped and lighting the guidance signal device 4 is performed in two ways: when the signal handler in the field performs it and when using the control circuit automatically. There is. When the signal handler performs, after confirming that the preceding combined train 1 is stopped in the predetermined track circuit, it is visually confirmed that the subsequent combined train 2 is temporarily stopped at the predetermined train stop position. After confirming, the induction signal 4 is turned on by levering the induction signal 4.
[0004]
Moreover, when making it perform automatically, switching of a traffic signal in a hall, train operation, etc. are all automatically controlled by a train operation comprehensive management system or an electronic interlocking device. In this case, when the preceding combined train 1 is stopped in one track circuit, and the subsequent combined train 2 enters the previous track circuit, the train detection circuit installed on the track becomes the train detection circuit installed on the track. Detect and drive the timer. Then, after the timer counts a predetermined set time such as 25 seconds, the guide signal 4 is turned on. The set time of the timer is set to the time required for the subsequent combined train 2 to stop at the train stop position after entering the previous track circuit.
[0005]
[Problems to be solved by the invention]
However, when the signal handler operates the lighting display of the guidance signal device 4, after confirming the stop of the subsequent combined train 2, a dedicated lever operator for lighting display is necessary, which is contrary to labor saving. There were drawbacks.
In addition, when the guidance traffic light 4 is automatically turned on and displayed using a timer, it is actually necessary to have a set time from when the following combined train 2 enters the predetermined track circuit until it stops at the train stop position. Longer than that (about 15 seconds), it is safe. For this reason, a loss time of about 15 seconds occurs every time a train is added, which is contrary to the shortening of the time interval of the diamond, which is an obstacle to improving the train density.
[0006]
[Means for Solving the Problems]
The present invention is an improvement and removal in view of the conventional problems described above, and there is no loss time by detecting that the following combined train stops at the train stop position using a non-contact type distance sensor. In addition, the present invention intends to provide a train stop detection device that can perform lighting display of the guidance traffic light without requiring an operator.
[0007]
Thus, the means of claim 1 adopted by the present invention to solve the above problem is that the preceding train stops when the succeeding train is connected to the preceding train stopped at the predetermined position. It is a detection device that detects that the following train has stopped once in the track circuit just before the track circuit that is located, and is installed on the side of the track ahead of the central control device and the stop position of the following train. A non-contact type distance sensor for detecting the distance to and a lighting display circuit of an induction signal, the distance sensor having a detection capability range in the track circuit in the previous one, the central control device, detecting a displacement amount of the output signal from the distance sensor, it is determined that the train is stopped when the displacement amount becomes substantially zero, the train stop detection device, characterized in that the induction signals machine was set to be turned It is.
The distance of the train is detected by a non-contact type distance sensor, and the stop of the train can be confirmed by detecting the displacement amount of the output signal of this sensor. Therefore, this signal processing can automatically turn on and display the guidance traffic light, there is no loss time, and no dedicated worker is required.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The configuration of the present invention will be described below based on the embodiment of the invention shown in the drawings. In addition, the same code | symbol as the conventional case is the same member. 1 to 3 show a train stop detection device according to an embodiment of the present invention. FIG. 1 is an operation explanatory diagram, FIG. 2 is a block diagram showing a configuration, and FIG. 3 is a flowchart. As shown in the block diagram of FIG. 2, this train stop detection device includes a central control device 5, an ultrasonic displacement sensor 6 as a non-contact type distance sensor and its sensor head 7, and a lighting display of the guidance signal device 4. Circuit 8. When the relay 9 of the central control device 5 is turned on, the lighting display circuit 8 closes the normally open contact 10 and lights up the induction signal device 4. As shown in FIG. 1, the sensor head 7 of the ultrasonic displacement sensor 6 is attached to the same column as the in-field signal device 3 and the guidance signal device 4. The attachment may not be the same support.
[0009]
Next, the operation | movement aspect of the train stop detection apparatus comprised in this way is demonstrated. First, when the preceding coupled train 1 is stopped in a predetermined track circuit based on the train comprehensive operation management system or the like, the on-site traffic signal 3 does not show progress, and displays a red signal. Yes. When the following combined train 2 enters the track circuit immediately before the track circuit from this state, it falls within the detection capability range of the ultrasonic displacement sensor 6, and the distance to the combined train 2 is determined by the sensor. The ultrasonic displacement sensor 6 repeatedly measures at a time interval of 500 ms through the head 7. Then, the information is input to the central controller 5.
[0010]
The central control unit 5 can know the distance to the combined train 2 and the speed of the combined train 2 by processing the output signal from the displacement sensor 6 as shown in the flowchart of FIG. It is. The central controller 5 determines that the combined train 2 has stopped when the displacement amount of the signal output from the displacement sensor 6 becomes “0”. Then, the relay 9 is turned on. As a result, the normally open contact 10 of the relay 9 is closed, and the induction signal 4 is turned on. Therefore, the combined train 2 enters the track circuit where the combined train 1 is stopped after confirming the lighting display of the induction signal 4 even in a red signal state where the on-site signal 3 does not show progress. , Work to connect trains.
[0011]
If it is such a train detection device, it is possible to know the approach speed and stop of the train in real time, there is no waste of time to confirm that the subsequent combined train 2 has stopped at the stop position, Simultaneously with the stop of the combined train 2, it is possible to turn on and display the guidance signal device 4. Therefore, there is no conventional loss time of about 15 seconds, and the train density can be improved.
[0012]
By the way, this invention is not limited to embodiment mentioned above, A suitable change is possible. For example, the stop of the combined train 2 is confirmed when the speed of the combined train 2 is 1 km / h or less, that is, when the speed is less than a speed that can be regarded as being completely stopped. You may make it judge. As a non-contact type distance sensor, it is also possible to use an infrared type or a millimeter wave radar in addition to the ultrasonic type.
[0013]
【The invention's effect】
As described above, in the present invention, a non-contact distance sensor is installed beside the track ahead of the train stop position, and the displacement of the output signal from the distance sensor is detected. It is possible to know the distance to the train, the moving speed of the train, and the stop of the train in a contact type and automatically. Therefore, by this signal processing, the guidance signal can be automatically turned on and displayed, and there is no loss time compared with the conventional method, and the train density can be improved. In addition, a dedicated worker is not required, and it is excellent in labor saving.
[Brief description of the drawings]
FIG. 1 is an operation explanatory diagram of a train stop detection device according to an embodiment of the present invention.
FIG. 2 is a block diagram of a train stop detection device according to an embodiment of the present invention.
FIG. 3 is a flowchart of a train stop detection device according to an embodiment of the present invention.
FIG. 4 is an operation explanatory diagram showing a conventional technique.
[Explanation of symbols]
1 ... Preceding train (joined train) 2 ... Subsequent train (joining train)
DESCRIPTION OF SYMBOLS 3 ... Signal in a field 4 ... Induction signal 5 ... Central control device 6 ... Ultrasonic sensor 7 ... Sensor head 8 ... Illumination display circuit

Claims (1)

When connecting a succeeding train to a preceding train that is stopped at a predetermined position, it is detected that the succeeding train has stopped once in the track circuit immediately before the track circuit where the preceding train is stopped. It is a detection device, which consists of a central control device, a non-contact distance sensor installed on the side of the track ahead of the stop position of the following train and detecting the distance to the following train, and a lighting display circuit for the induction signal. The distance sensor has a detection capability range in the track circuit just before, and the central control unit detects the displacement amount of the output signal from the distance sensor, and the displacement amount becomes almost zero. A train stop detection device characterized in that it is sometimes determined that the train has stopped and the guidance signal is turned on.

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