JP2019108059A - Train information judgement device for railroad crossing and railroad crossing control system - Google Patents

Abstract

To provide a train information judgement device for a railroad crossing which device is free from an erroneous detection and applicable to an electronic train detector without a backup unit.SOLUTION: A train information judgement device comprises a signal acquisition means 42 which acquires, as a train detection signal, a signal that regularly varies during a period from approach to leaving of a train and is outputted by an electronic train detector from the detector or equipment 30 corresponding to the detector 20, a storage means 41 preliminarily storing a train detection signal waveform information during normal train travel and a judgement means 43 which compares the train detection signal acquired by the acquisition means with the waveform stored in the storage means. The signal acquisition means is constituted to acquire the train detection signal from an inspection adapter which has a function to transmit the train detection signal to an electrical inspection vehicle measuring a length of a control section.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a train information determination apparatus and a level crossing control system at a level crossing, for example, to a train information determination apparatus and a level crossing control system using a detection adapter provided in a level crossing controller or a level crossing controller.

As a level crossing control device for operating a level crossing device such as a level crossing barrier or a level crossing alarm when a train passes a level crossing, for example, level crossing controllers arranged at both ends of a predetermined section across the level crossing detect the train There are some which control a level crossing device according to the change of the voltage output at the time of.
The level crossing controller has a train detection range, and when the train enters the train detection range, the controller reaction relay installed near the crossing is dropped by the change in voltage output by the level crossing controller. The level crossing control device operates the level crossing device to start the level crossing warning, and the voltage output when the train advances from the train detection range of the level crossing control is returned to the original state, and the control element reaction relay is lifted to control the level crossing Control is performed such that the device ends the level crossing warning.

  A level crossing controller that detects the entry or exit of a train is a type of track circuit, for example, applies a signal of 8.5 kHz to 10.5 kHz to one rail, and the train exists within the train detection range of the level crossing controller. When you do, using the principle that the track circuit of the level crossing controller is shorted by the axle of the train to form a closed circuit, it detects the entrance of the train into the train detection range or the entrance of the train out of the train detection range. , And is configured to output a voltage for operating a relay installed near the crossing. There are two types of level crossing control elements: closed circuit type (HC type) and open circuit type (HO type).

  Specifically, the train enters the train detection range (control section) of the level crossing control element (HC type) disposed at the start point of the predetermined section (600 to 1200 m from the level crossing), and the track circuit is shorted. And activate the starting point reaction relay (drop the relay contacts). In addition, when the train enters within the train detection range of the level crossing control element (HO type) arranged at the end point of the predetermined section (point 20m or more inward of level crossing), this is detected and the end point reaction relay Some are configured to operate in the reverse state (relay relay contacts).

In the crossing control system using the above controller, a predetermined distance (for example, 30 m) is specified for the width of the train detection range (hereinafter referred to as "control section length"), and the performance of the level controller is If it falls, the control section length becomes short and it becomes difficult to detect a train. Therefore, in order to prevent the operation failure of the leveling control device caused by the decrease in the detection performance of the train by the leveling control element, an inspection operation of periodically measuring the control section length of the leveling control element is performed. Such inspections are generally performed by electrical inspection vehicles, but on routes where the electrical inspection vehicles do not travel, they are manually performed using rail shorters or the like.
However, if the level crossing controller breaks down, it may be in the train detection state and alarm control may be performed on the level crossing. In addition, even if conditions equivalent to the train approach are satisfied due to external factors, the level crossing control element is in the train detection state and performs alarm control. Therefore, there is a problem that it is difficult to independently determine whether the train is a train or not when the warning continuation by the level crossing control device occurs.

On the other hand, conventionally, in order to enable measurement of the control section length by the electric inspection vehicle, a detection adapter that is provided alongside the level crossing controller and generates and outputs a train detection signal using input and output signals of the level crossing controller. is there. Further, as an invention related to a measurement adapter, for example, there is one described in Patent Document 1.
In the inspection adapter described in Patent Document 1, a closed circuit type level crossing controller outputs a signal to a rail, and a signal detection unit that detects a signal input from the rail; A reference level setting means for setting a level, a judgment means for judging as a train detection when the detection signal changes by a predetermined value or more from the reference level, and a detection relay which opens a detection relay contact when it is judged as a train detection It comprises so that this detection relay contact may be connected in series with the relay contact of a closed circuit type level crossing control element.

  In addition, a level crossing backup device is provided to back up the level crossing control element, and the train detection signal of the level crossing control element and the train detection signal output of the level crossing backup device are constantly compared, and mismatch detection information is generated when a mismatch occurs in detection output. Based on the failure detection adapter that transmits the error and the nonconformity detection information transmitted from the failure detection adapter, it is determined that a fault has occurred in the level crossing controller or level crossing backup device, and fault detection information is reported to the central monitoring device An invention relating to a failure detection device for a train detection device including a receiving unit has also been proposed (see Patent Document 2).

Unexamined-Japanese-Patent No. 2006-151044 JP-A-11-310133

However, the invention of Patent Document 1 focuses on the waveform of one detection signal, compares the detection signal with a reference level, and determines that a train is detected when the detection signal changes by a predetermined value or more. Therefore, even if the conductors are dropped or moved on the rails in the control section (train detection range) and the rails are shorted, a detection signal similar to that at the time of entering the train is generated and the level crossing control is performed. There is a problem that a child may erroneously detect.
Further, the invention of Patent Document 2 is premised on the provision of a level crossing backup device, and therefore can not be applied to a level crossing control element without a level crossing backup device, and the level crossing control element which changes depending on conditions. There is a problem that the circuit is complicated to compare and determine the output pulse from the level crossing backup device.

The present invention has been made focusing on the above problems, and the purpose of the present invention is train information that can be used for a level crossing controller without a level crossing backup device without a risk of false detection. It is in providing a judgment device.
Another object of the present invention is to analyze a signal waveform acquired from a device such as a level crossing controller or a detection adapter provided corresponding to the level crossing controller, and accurately enter and exit trains to a control section. It is an object of the present invention to provide a level crossing control system capable of detecting a train speed and a train length and controlling a level crossing barrier or a level crossing alarm.

In order to solve the above-mentioned subject, the train information judging device concerning the present invention,
A signal acquisition means for acquiring the signal as a train detection signal from a crossing control element or a device provided corresponding to the level crossing control element that outputs a signal indicating regular change from entry to exit of a train;
Storage means for storing in advance train detection signal waveform information at the time of normal train travel;
A determination unit that compares the waveform of the train detection signal acquired by the signal acquisition unit with the waveform information stored in the storage unit and determines whether it is a train based on the difference in waveform shape;
Is provided.

  According to the train information determination apparatus configured as described above, the control signal to the level crossing control section is based on the waveform by utilizing the fact that the detection signal and the train detection signal waveforms due to causes other than the train passing are clearly different. Since it is possible to determine the approach of the train of (1), there is no risk of false detection, and it can also be used for a level crossing controller without a level crossing backup device. In addition, the train approach can be detected more accurately because the detection is performed not by focusing on the waveform of one wave of the detection signal but by determining the waveforms of a plurality of continuous waves. Furthermore, the operation confirmation inspection can be efficiently performed by being able to determine whether the detection signal is due to a train. In addition, in the case where a failure such as a level crossing controller failure or an improper short circuit of an electric circuit due to an external factor occurs, it becomes possible to utilize it in combination with various data for cause investigation.

Here, desirably, the signal acquisition means is configured to acquire the train detection signal from a detection adapter having a function of transmitting a train detection signal to an electric inspection vehicle that measures a control section length.
According to this configuration, the train detection signal of the level crossing controller can be acquired using the inspection adapter already installed, so that the level crossing control system provided with the train information determination device can be constructed inexpensively. it can.

Preferably, the communication system further comprises a communication means for transmitting the determination result by the determination means to the monitoring device.
According to this configuration, even when the monitoring device is installed at a place away from the level crossing to be monitored such as the command center, it is possible to grasp the occurrence of an abnormality in the level crossing controller without having to go to the site.

Furthermore, desirably, the storage means stores vehicle information related to the configuration of a train traveling on a control section to be monitored;
Signal analysis means for analyzing the waveform of the train detection signal acquired by the signal acquisition means;
Operation processing means for calculating the speed and train length of a train entering the control section based on the analysis result by the signal analysis means and the vehicle information stored in the storage means;
Transmission means for transmitting information calculated by the arithmetic processing means to a level crossing control device for controlling a level crossing breaker and a level crossing alarm.
To provide.

  According to the configuration as described above, arithmetic processing means for calculating the speed and train length of the train entering the control section based on the analysis result by the signal analysis means and the train information stored in the storage means, and arithmetic processing Since the transmission control unit transmits information calculated by the unit to the level crossing control device, the level crossing control device can perform level crossing control according to the train that has entered the control section.

Another invention of the present application is a train information determination apparatus having the above configuration, and a level crossing controller for controlling a level crossing breaker and a level crossing alarm installed near the level crossing based on a signal from the level crossing controller. A control device and a level crossing control system provided with
The level crossing control device determines the operation start timing and the operation stop timing of the level crossing breaker and the level crossing alarm based on the calculation information sent from the train information determination device and the signal from the level crossing controller. It is configured to determine and control.

  According to the above-mentioned level crossing control system, the signal waveform acquired from the device such as the level crossing controller or the inspection adapter provided corresponding to the level crossing controller is analyzed to enter the train into the control section As well as accurately detecting the advance, it is possible to control the level crossing barriers and level crossing alarms by grasping the train speed and the train length, which makes it possible to shorten the time during which the level crossings are blocked. The convenience of pedestrians and vehicles using level crossings can be improved.

  According to the train information determination apparatus of the present invention, there is no risk of false detection, and the train information determination apparatus can also be used for a level crossing control element without a level crossing backup device. Further, according to the level crossing control system of the present invention, the signal waveform acquired from the device such as the level crossing controller or the inspection adapter provided corresponding to the level crossing controller is analyzed to enter the train into the control section. In addition to accurately detecting advancement, it is possible to control the level crossing barrier or the level crossing alarm by grasping the train speed and the train length, and it is possible to shorten the time during which the level crossing is blocked. It has the effect of

It is the schematic which showed the structure of the level crossing control system to which the train information determination apparatus which concerns on this invention is applied. It is the wave form diagram which showed the example of the detection signal acquired from the inspection adapter. It is a block diagram showing an example of composition of a train information judging device in an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows a schematic configuration of a level crossing control system to which a train information determination apparatus according to the present invention is applied.
As shown in FIG. 1, the level crossing control system is disposed at a predetermined distance from the level crossing with the level crossing control device 10 for controlling the level crossing barrier or the level crossing alarm installed at the level crossing and the level crossing. Wirelessly transmitted to an electric inspection vehicle that acquires train detection signals (analog signals) provided corresponding to the level crossing controller 20A and level crossing controller 20B and these level crossing controllers 20A and 20B. The inspection adapter 30 and the like are arranged. Some of the existing level crossing controllers are provided with inspection adapters, and the existing inspection adapters can be used for crossings where inspection adapters have already been installed.

  The train information determination device 40 according to the present invention is provided corresponding to the inspection adapter 30. Although only the inspection adapter 30 and the train information determination device 40 corresponding to the level crossing controller 20A are shown in FIG. 1 for convenience of illustration, the inspection adapter corresponding to the level crossing controller 20B and the inspection adapter There is also provided a train information judging device corresponding to. In addition, as long as it is a level crossing control element having a function of outputting a signal indicating regular change from entry to exit of a train, the signal may be acquired from the level crossing control element. In the following embodiment, the case of acquiring a signal from a measurement adapter will be described.

The relay outputs of the leveling controllers 20A and 20B are transmitted to the leveling control device 10 through the cables 21A and 21B, and the internal relays are dropped or raised.
Specifically, when the level crossing controllers 20A and 20B are voltage feedback type closed circuit type level crossing controllers, a signal (oscillation output) output from the output terminal of the level crossing controller is fed back to the input terminal through the rail R. When the train is not approaching, an oscillator (not shown) built in the level crossing control element oscillates, and the oscillating output is rectified and the contacts of the built-in relay are closed. Raise the relay. When the train approaches, the train axles and wheels short-circuit the rails, so the signal input to the input terminal decreases and the oscillation output decreases, and when the oscillation output decreases by more than a predetermined value, the contacts of the built-in relay Opens and drops the relay in the level crossing control device 10.
The train information determination device 40 is configured to acquire a train detection signal from, for example, a signal line (or a terminal) in the inspection adapter 30 to perform the determination.

Here, the features of the waveform of the train detection signal detected by the inspection adapter 30 will be described with reference to FIG.
In FIG. 2, the symbol A is attached to the waveform of the detection signal during normal travel of the train, and the symbol B is attached to the detection signal when the train is stopped after entering the control section. The waveform, symbol C, for example, is a waveform of a detection signal when a worker shorts between rails and does not move using a rail shorter, and the symbol, D, is a rail shorter The waveform of the detection signal at the time of a worker's moving shorting between rails is shown, respectively. In the graph of FIG. 2, the horizontal axis is time (in seconds), and the vertical axis is the current value (in mA).

  Also, the steep rise (1s) of the waveforms A and B shown in FIG. 2 is the timing when the train enters the control section, the sharp fall of the waveform A is the timing when the train leaves the control section, and the waveform C The rising timing is the timing when the rail shorting circuit shorts the rails in the control section, the falling timing of the waveform C is the timing when the rail shorting circuit is removed from the rails, the rising timing of the waveform D is the timing when the rail shorting circuit enters the control section, The falling edge of the waveform D is the timing at which the rail shorting circuit has advanced from the control section.

  As shown in FIG. 2, the waveform of the detection signal when the rail short circuit occurs is completely different due to the entrance of the train and other causes, so it is possible to detect the cause when an abnormality occurs in the level crossing controller by analyzing the waveform. I understand. In addition, in waveform A when the train is traveling, the short interval triangular wave is continuous because the multiple axles of the vehicle connect with the cables for connecting the signal from the level crossing control to the rail. It occurs as the points are sequentially passed. And while the number of axles per car and the distance between the axles are almost the same regardless of the vehicle type, the train length is determined by the formation.

  From this, the number of axles, that is, the train formation and the train length can be determined from the number of peaks of waveform A, and the time interval between peaks and peaks of waveform A or the time from rise to fall of waveform A can be measured. The train speed can be known, and further, if the train speed and the train formation are known, it can be understood that the time to reach the crossing and the time required to pass the crossing can also be calculated. The train information determination device 40 of the present embodiment is devised based on the above knowledge.

FIG. 3 shows a schematic configuration of an embodiment of a train information determination apparatus 40 according to the present invention.
As shown in FIG. 3, the train information determination device 40 of the present embodiment includes a storage device 41A such as a semiconductor memory storing information such as a normal detection signal waveform measured at the time of train traveling, and a detection target A storage device 41 B storing information such as inter-axle distance, formation, and vehicle length for a train traveling on a track on which a level crossing controller is installed, and a train detection signal acquired from the inspection adapter 30 are input A signal input circuit 42 is provided.

  Further, the train information determination device 40 compares the normal waveform stored in the storage device 41A with the waveform of the train detection signal taken in by the signal input circuit 42 and The signal determination unit 43 determines whether a short circuit has been detected or a short circuit due to a cause other than a train, and a communication circuit 44 that transmits the determination result to a monitoring device 50 installed in a command room or the like by radio. When the train detection signal input to the signal input circuit 42 is an analog signal, an analog-digital conversion circuit may be provided in the signal input circuit 42. Signal waveform information may be transmitted from the communication circuit 44 to the monitoring apparatus 50 in addition to the determination result.

  The monitoring device 50 has a function of storing the determination result or the determination result and the signal waveform information transmitted from the train information determination device 40 in the storage device and checking the cause of the abnormality from the received signal waveform. Further, the monitoring device 50 is configured to have a function of outputting an alarm when a determination result indicating an abnormality or information notifying that the train has stopped in the control section is sent from the train information determination device 40. It is good. Transmission of data from the communication circuit 44 to the monitoring device 50 may be wired.

Furthermore, the train information determination device 40 analyzes the waveform of the train detection signal fetched by the signal input circuit 42 and extracts a feature such as the change time of the signal waveform or the interval between mountains and the signal waveform; The arithmetic processing unit 46 detects the train speed, the train length and the control section length by calculation based on the information stored in the storage device 41B by detecting the inter-axle distance and the train formation from the change time and interval of A transmission circuit 47 that transmits information such as the speed and the calculated train length to the level crossing control device 10 is provided. The signal determination unit 43, the signal analysis unit 45, and the arithmetic processing unit 46 can be realized by a microprocessor and a program.
In the level crossing control system of the present embodiment, the level crossing control device 10 stops the ringing start timing and the ringing stop of the level crossing alarm based on the information such as the train speed and the train length transmitted from the train information determination device 40. It is configured to have a function of determining the timing of and controlling the operation of the level crossing alarm and the level crossing breaker in accordance with the determined timing.

  As described above, according to the train information determination apparatus 40 of the present embodiment, it is possible to detect an abnormality in the level crossing control system by comparing the train detection signal waveform from the inspection adapter with the waveform stored in advance. it can. Also, by analyzing the waveform of the train detection signal, the speed and train length of the train entering the control section are obtained by calculation, and the information is transmitted to the level crossing control device 10, and the level crossing control device 10 enters the train Control the operation of the level crossing alarm and the level crossing blocker based on information such as the speed of the train and the length of the train, the time during which the level crossing blocker is falling can be shortened, and the convenience of pedestrians and vehicles crossing level crossings It is possible to improve the quality.

As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment. For example, in the train information determination device 40 of the above embodiment, the storage devices 41A and 41B are provided as separate storage devices, but may be configured as one storage device.
In the above embodiment, the determination result of the signal determination unit 43 and the signal waveform information are wirelessly transmitted to the monitoring device 50 installed in the command room or the like by the communication circuit 44. However, the determination result and the signal waveform The information may be temporarily stored in the storage device 41A and transmitted from the monitoring device 50 in response to a request. As a result, it is possible to avoid data transmission in a state in which the communication environment has deteriorated due to the passing of a train, and to transmit data reliably.

The determination result of the signal determination unit 43 and the signal waveform information may be stored in the semiconductor memory, and the memory may be recovered and read or analyzed by the monitoring device. Furthermore, the determination result of the signal determination unit 43 may be transmitted to the level crossing control device 10 to be used for level crossing control.
Further, in the above embodiment, although the train detection signal from the inspection adapter 30 is taken in, regarding the crossing control device 10 not provided with the inspection adapter 30, the signal acquisition provided in the inspection adapter 30 The present invention can be applied to a level crossing control system not provided with the inspection adapter 30 by being configured to capture a signal from the level crossing control device 10 using technology.

DESCRIPTION OF REFERENCE NUMERALS 10 level crossing control device 20A, 20B level crossing controller 30 inspection adapter 40 train information determination device 41 storage device 42 signal input circuit 43 signal determination unit 44 communication circuit (communication means)
45 signal analysis unit 46 calculation processing unit 47 transmission circuit (transmission means)
50 monitoring devices

Claims (5)

A signal acquisition means for acquiring the signal as a train detection signal from a crossing control element or a device provided corresponding to the level crossing control element that outputs a signal indicating regular change from entry to exit of a train;
Storage means for storing in advance train detection signal waveform information at the time of normal train travel;
A determination unit that compares the waveform of the train detection signal acquired by the signal acquisition unit with the waveform information stored in the storage unit and determines whether it is a train based on the difference in waveform shape;
The train information determination apparatus characterized by having.   The signal acquisition means is configured to acquire the train detection signal from a detection adapter having a function of transmitting a train detection signal to an electric inspection vehicle that measures a control section length. The train information determination apparatus of claim 1.   The train information judging device according to claim 1 or 2, further comprising a communication means for transmitting the judgment result by the judgment means to the monitoring device. The storage means stores vehicle information related to the configuration of a train traveling on a control section to be monitored,
Signal analysis means for analyzing the waveform of the train detection signal acquired by the signal acquisition means;
Operation processing means for calculating the speed and train length of a train entering the control section based on the analysis result by the signal analysis means and the vehicle information stored in the storage means;
Transmission means for transmitting information calculated by the arithmetic processing means to a level crossing control device for controlling a level crossing breaker and a level crossing alarm.
The train information determination apparatus according to any one of claims 1 to 3, further comprising: A crossing control system comprising: the train information judging device according to claim 4; and a crossing control installed in the vicinity of the crossing based on a signal from the crossing controller and controlling a crossing alarm. ,
The level crossing control device determines the operation start timing and the operation stop timing of the level crossing breaker and the level crossing alarm based on the calculation information sent from the train information determination device and the signal from the level crossing controller. A level crossing control system characterized in that it is configured to determine and control.