JPH09272440A - Railway crossing gate bar breakage detecting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a railway crossing gate bar breakage detecting device improvable of its reliability for being easily constructible and excellent in environment-proof by providing two lines of optical fiber cables on a gate bar in its longitudinal direction through an optical connector arranged inside the gate bar on its tip and detecting damage of the gate bar by a detecting means based on the attenuation quantity of a light signal transmitted to the optical fiber cables. SOLUTION: A railway crossing gate bar breakage detecting device 1 has optical fiber cables 4, 5 arranged inside the gate bar 3 for detecting damage of the gate bar 3 with an optical connector 6 provided on its end and also has a transmitting optical connector 7 and a receiving optical connector 8 on the crossing gate 16 side. An optical fiber cable of characteristic including a large transmission loss with respect to curvatures is used for optical fiber cables 4, 5 and when the gate bar 3 is deformed or damaged, the optical fiber cables 4, 5 arranged inside the gate bar 3 curves becomes a large transmission loss, while a detecting means 2 detects the deformation or damage of the gate bar 3 based on the level of a light signal received. The damaged gate bar 3 is centralizely controlled by a central processing unit 17.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a railroad crossing blocking rod breakage damage detecting device, and by disposing an optical fiber cable in the railing crossing rod, the railroad crossing blocking rod breakage damage can be reliably detected. Regarding the detection device.

[0002]

2. Description of the Related Art FIG. 5 shows an example of a schematic configuration diagram of a conventional railroad crossing blocking rod breakage damage detection device. In FIG. 5, the railroad crossing blocking rod breakage detection device 40 includes a blocking rod 41, a reflector 42, a breakage detector 43, a light emitting element 44, a light receiving element 45, a mounting post 46, and a breaker main body 47.

A reflector 42 is provided in advance at or near the tip of the shutoff rod 41, and infrared rays R1 are emitted from the light emitting element 44 of the breakage detector 43 provided near the raised position of the shutoff rod 41 toward the reflector 42. By irradiating and receiving the reflected infrared ray R2 by the light receiving element 45, it is possible to detect whether or not the blocking rod 41 is broken.

[0004]

The conventional level crossing blocking rod breakage detection device 40 shown in FIG. 5 detects a breakage of the blocking rod 41 when the blocking rod 41 is in the raised state (when the circuit breaker is open). Therefore, it is necessary to vertically install the mounting column 46 having substantially the same length as the blocking rod 41, and to mount the light emitting element 44 and the light receiving element 45 on the upper part of the mounting column 46. There is a problem that cost performance in is poor.

A conventional railroad crossing blocking rod breakage detection device 40 is also provided.
Is the breakage detector 43 with the shutoff rod 41 raised.
The infrared ray R1 is emitted from the reflecting plate 42 toward the reflecting plate 42, and the breakage detector 43 detects the reflected infrared ray R2 according to the received light level.
Since it is detected whether or not 1 is broken, the reflector 42
The breakage detector 43 and the breakage detector 43 need to be held in a predetermined positional relationship, and there is a problem that the breakage detection malfunctions due to fluctuations in the received light level due to the shaking of the blocking rod 41 during strong wind.

Further, the conventional level crossing breaking rod breakage damage detection device 4
0 indicates that the infrared ray R1 is emitted from the light emitting element 44 of the breakage detector 43 toward the reflecting plate 42, the reflected infrared ray R2 is received by the light receiving element 45, and whether or not the blocking rod 41 is broken depending on the light receiving level. Since the detection is performed, there is a problem of malfunction of breakage detection due to attenuation of the light reception level due to dirt on the lens of the light receiving element 45, dew condensation on the lens, snowfall, or the like.

[0007] Further, the conventional railroad crossing blocking rod breakage detection device 40.
Is an infrared ray R1 from the breakage detector 43 toward the reflector 42.
The breakage detector 43 detects whether the blocking rod 41 is broken or not by the received light level of the reflected infrared ray R2, so that the reflection plate 42 is soiled, or the dew condensation on the reflection plate 42, snowfall, etc. There is a problem of malfunction of breakage detection due to attenuation of the received light level.

The present invention has been made in order to solve the above-mentioned problems of the prior art, and an object thereof is to dispose an optical fiber cable in a blocking rod and to accompany the deformation of the blocking rod. Equipped with a detection means that detects the breakage of the blocking rod by utilizing the increase in transmission loss due to the bending of the rail, the construction is easy and the cost is low, and the environment resistance is also high To provide a device.

[0009]

According to a first aspect of the present invention, there is provided a railroad crossing blocking rod breakage damage detection device, wherein an optical connector is arranged at a front end of the blocking rod, and two optical fibers are arranged in the longitudinal direction of the blocking rod via the optical connector. An optical fiber cable is provided, and a detection means for detecting breakage of the blocking rod based on an attenuation amount of an optical signal transmitted through the optical fiber cable is provided.

The railroad crossing blocking rod breakage detection device according to the present invention is
An optical connector is arranged at the tip of the blocking rod, two optical fiber cables are provided in the longitudinal direction of the blocking rod via the optical connector, and the blocking rod is provided depending on the attenuation amount of the optical signal transmitted through the optical fiber cable. Since the detection means for detecting the breakage of the breaking rod is provided, it is possible to always detect the breakage of the breaking rod regardless of the rotating position of the breaking rod.

According to a second aspect of the present invention, there is provided a railroad crossing rod breakage damage detection device in which an optical connector is arranged at a tip end of the barrier rod, and a light emitting means and a light receiving means are incorporated into an end portion of the barrier rod on the main body side. An optical fiber cable for transmitting and receiving light is provided between the light emitting means and the light receiving means via the optical connector, and the detecting means for detecting breakage of the blocking rod based on the attenuation amount of the optical signal transmitted through the optical fiber cable. It is characterized by having.

According to the present invention, there is provided a railroad crossing blocking rod breakage damage detection device.
An optical connector is arranged at the tip of the blocking rod, and a light emitting means and a light receiving means are incorporated at the end of the blocking rod inside the blocking rod.
An optical fiber cable for transmitting and receiving light is provided between the light emitting means and the light receiving means via the optical connector, and a detecting means for detecting breakage of the blocking rod by the attenuation amount of the optical signal transmitted through the optical fiber cable is provided. Since it is provided, the optical system device is provided inside the blocking rod, and the optical system device and the electric system device of the detecting means can be separated.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described based on embodiments shown in the drawings. FIG. 1 shows an example of a schematic configuration diagram of a railroad crossing blocking rod breakage detection device according to the present invention. In FIG. 1, a railroad crossing blocking rod breakage detection device 1 includes a detecting means 2, a blocking rod 3, optical fiber cables 4 and 5 in the blocking rod 3, an optical connector 6, a transmitting optical connector 7, and a receiving optical connector 8. Prepare

The main body 16 of the breaker controls the crossing rod 3 from a horizontal position to a vertical position by an angle of about 90 ° to control the passage of a vehicle or a passerby at a railroad crossing. Optical fiber cables 4 and 5 are arranged in the blocking rod 3 in order to detect breakage of the blocking rod 3. Generally, the central processing unit 17 centrally manages the breakage of the blocking rod 3 based on the notification from the plurality of railroad crossing blocking rod breakage detection devices 1.

FIG. 2 shows an example of an overall block diagram of a railroad crossing blocking rod breakage damage detection device according to the present invention. In FIG.
The railroad crossing blocking rod breakage detection device 1 includes a detecting means 2, a blocking rod 3, optical fiber cables 4 and 5 in the blocking rod 3, and an optical connector 6.
And a transmission optical connector 7 and a reception optical connector 8. The detecting means 2 has a driving means 9, a light emitting means 10, a light receiving means 11, an amplifying means 12, a judging means 13, and external optical fiber cables 14 and 15.

The breaking rod 3 is attached to the breaker main body 16 so as to be rotatable up to an angle of about 90 °. The optical connector 6 is incorporated into the tip of the shutoff rod 3, and the optical transmitter connector 7 and the optical receiver connector 8 are incorporated into the end of the shutoff rod 3 on the side of the main body of the breaker, and the space between the optical connectors at both ends is omitted. The optical fiber cables 4 and 5 are connected in a straight line.

The drive means 9 sends a drive signal S2 to the light emitting means 10.
Is output. The light emitting means 10 converts an electric signal into an optical signal based on the drive signal S2, and transmits the optical signal S3 via the external optical fiber cable 14 to the transmitting optical connector 7 in the blocking rod 3.
Send to The optical signal S3 passes through the optical fiber cable 4, the optical connector 6, the optical fiber cable 5 and the receiving optical connector arranged in the blocking rod 3, and the optical signal S4 as the optical signal S4 via the external optical fiber cable 15. Received at 11.

The light receiving means 11 receives the optical signal S4, converts it into an electric signal, and outputs a received signal S5. Amplifying means 12
Outputs the received signal S6 by amplifying the received signal S5. The judging means 13 judges the breakage of the blocking rod 3 based on the level of the received signal S6 and outputs a judgment signal S7 to the central processing unit 17.

As the optical fiber cables 4 and 5 arranged in the blocking rod 3, the optical fiber cables having a characteristic of having a large transmission loss against bending are used. When the blocking rod 3 is deformed or broken, the optical fiber cables 4 and 5 arranged in the blocking rod 3 are bent to cause a large transmission loss, and the light receiving means 11
The optical signal S4 received at is a signal that is greatly attenuated. The detection means 2 detects the deformation and breakage of the blocking rod 3 based on the level of the received optical signal S4.

The optical fiber cables 4 and 5 may be bent at the tip of the blocking rod 3 and folded back without using the optical connector 6 arranged at the tip of the blocking rod 3. Taking into consideration the transmission loss caused by bending and folding the optical fiber cables 4 and 5 at the tip end inside the blocking rod 3, the blocking rod 3
It is also possible to detect deformation or breakage of the.

As described above, in the railroad crossing blocking rod breakage damage detecting device according to the present invention, the optical connector is arranged at the tip of the blocking rod.
Two optical fiber cables are provided in the longitudinal direction of the blocking rod via the optical connector, and a detection means for detecting breakage of the blocking rod based on the attenuation amount of an optical signal transmitted through the optical fiber cable is provided. It is possible to always detect breakage of the blocking rod regardless of the pivotal position of the rod.

Further, in the railroad crossing blocking rod breakage damage detecting device according to the present invention, the optical fiber cable disposed inside the blocking rod is an optical fiber cable having a large transmission loss with respect to bending. Also, the accuracy of detection of breakage can be improved.

FIG. 3 shows an example of an overall block diagram of a railroad crossing blocking rod breakage damage detection device according to the present invention. In FIG.
The railroad crossing blocking rod breakage damage detection device 20 includes a detection means 21, optical fiber cables 23 and 24 in the blocking rod 22, and an optical connector 2.
5 and 5. Further, the detecting means 21 has a driving means 26, a light emitting means 27, a light receiving means 28, an amplifying means 29, and a judging means 30.

Since the operation principle of the railroad crossing blocking rod breakage damage detecting device 20 is the same as that of the railroad crossing blocking rod breakage damage detecting device 1 shown in FIG. 2, the explanation of the operation principle of the railroad crossing breaking rod breakage damage detecting device 20 is omitted here. To do.

The railroad crossing blocking rod breakage damage detection device 20 includes a blocking rod 2
2 has optical fiber cables 23 and 24 and an optical connector 25, and the light emitting means 27 and the light receiving means 28 of the detecting means 21 are incorporated therein, and all the optical system devices are housed in the shutoff rod. .

As a result, the railroad crossing blocking rod breakage detecting device 20 connects the transmitting optical connector 7, the receiving optical connector 8 and the external optical fiber cables 14 and 15 of the railroad crossing blocking rod breakage detecting device 1 shown in FIG. Disregard. The drive signal S11 of the drive means 26 of the detection means 21 can be directly output to the cutoff rod 22, and the received signal S14 from the cutoff rod 22 can be directly output to the amplification means 29 of the detection means 21.

As described above, in the railroad crossing blocking rod breakage damage detection device according to the present invention, the optical connector is arranged at the tip of the blocking rod.
A light emitting means and a light receiving means are incorporated at the end of the breaker main body side in the blocking rod, and an optical fiber cable for transmitting and receiving light is provided between the light emitting means and the light receiving means via an optical connector. Since the detection means for detecting the breakage of the blocking rod is provided by the attenuation amount of the optical signal transmitted through the fiber cable, the optical system device is provided inside the blocking rod, and the optical system device and the electrical system device of the detection means are separated. can do.

FIG. 4 shows a breakage state diagram of the breaking bar of the railroad crossing breaking bar breakage detecting device according to the present invention. In FIG. 4, due to the breakage of the blocking rod 3, the optical fiber cables 4 in the blocking rod 3 are
The curve 5 bends to increase the transmission loss, and the light transmitted through the optical fiber cables 4 and 5 is significantly attenuated. The detection means 2 detects the breakage of the blocking rod 3 from the attenuation of the light transmitted through the optical fiber cables 4 and 5, and the central processing unit 17
The detection signal is output to.

The above embodiment is an example of the present invention, and the present invention is not limited to the above embodiment.

[0030]

According to the present invention, there is provided an optical connector disposed at the tip of the blocking rod, and two optical fiber cables are provided in the longitudinal direction of the blocking rod via the optical connector. , The detection means for detecting the breakage of the blocking rod by the attenuation amount of the optical signal transmitted through this optical fiber cable is provided, and the breakage of the blocking rod can be constantly detected regardless of the rotating position of the blocking rod. It is possible to provide a railroad crossing blocking rod breakage damage detection device that is easy to perform, reduces costs, has excellent environment resistance, and has high reliability.

Further, in the railroad crossing blocking rod breakage damage detection device according to the present invention, an optical connector is arranged at the tip of the blocking rod, and the light emitting means and the light receiving means are provided at the end of the blocking rod main body side in the blocking rod. An optical fiber cable for transmitting and receiving light is installed between the light emitting means and the light receiving means via the built-in optical connector, and detection is made to detect breakage of the blocking rod based on the attenuation amount of the optical signal transmitted through this optical fiber cable. Since the optical system device is provided in the shutoff rod and the optical system device of the detection means and the electric system device can be separated, the construction is easy, the cost is reduced, and the environment resistance is improved. It is possible to provide an excellent and more reliable railroad crossing blocking rod breakage detection device.

Therefore, it is possible to provide a railroad crossing blocking rod breakage damage detection device which is easy to construct, economical, excellent in environmental resistance and highly reliable.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a railroad crossing blocking rod breakage damage detection device according to the present invention.

FIG. 2 is an overall block configuration diagram of a railroad crossing blocking rod breakage damage detection device according to the present invention.

FIG. 3 is an overall block configuration diagram of a railroad crossing blocking rod breakage damage detection device according to the present invention.

FIG. 4 is a broken state diagram of the breaking rod of the crossing breaking rod breaking damage detection device according to the present invention.

FIG. 5 is a schematic configuration diagram of a conventional railroad crossing blocking rod breakage detection device.

[Explanation of symbols]

1, 20, 40 ... Railroad crossing blocking rod damage detection device, 2, 21,
41 ... Detecting means, 3, 22 ... Blocking rods, 4, 5, 23, 2
4 ... Optical fiber cable, 6, 25 ... Optical connector, 7 ...
Optical connector for transmission, 8 ... Optical connector for reception, 9, 26 ...
Drive means 10, 27, 45 ... Light emitting means 11, 28,
45 ... Light receiving means, 12, 29 ... Amplifying means, 13, 30 ...
Judgment means, 14, 15 ... External optical fiber cable, 1
6, 31, 47 ... Circuit breaker main body, 17, 32 ... Central processing unit, 42 ... Reflector, 43 ... Breakage detector, 43 ... Mounting pillar, R1 ... Infrared, R2 ... Reflected infrared, S2, S11 ... Drive signal, S3, S4, S12, S13 ... Optical signal, S5, S6, S1
4, S15 ... Received signal, S7, S16 ... Judgment signal.

Claims (2)

[Claims] 1. A disconnecting rod that is rotated by a main body of the interrupter,
A railroad crossing blocking rod breakage detecting device comprising: a detecting unit for detecting breakage of the blocking rod, wherein an optical connector (6) is provided at a tip end portion arranged in the blocking rod (3), and the optical connector (6). ), Two optical fiber cables (4,5) provided in the longitudinal direction of the blocking rod (3), and the blocking due to the attenuation amount of the optical signal transmitted through the optical fiber cables (4,5). A railroad crossing blocking rod breakage detection device comprising: a detection means (2) for detecting breakage of the rod (3). 2. A disconnecting rod which is rotated by a main body of the interrupter,
A railroad crossing blocking rod breakage detecting device comprising: a detection unit for detecting breakage of the blocking rod, wherein an optical connector (25) is provided at a tip end portion disposed inside the blocking rod (22), and the blocking rod (22). ), A light emitting means (27) incorporated at the end of the circuit breaker body (31) side, and a light receiving means (28)
And the light emitting means (27) through the optical connector (25)
An optical fiber cable (23, 24) provided for transmitting and receiving light between the optical fiber cable (23, 24) and the light receiving means (28), and the interruption due to an attenuation amount of an optical signal transmitted through the optical fiber cable (23, 24). A railroad crossing blocking rod breakage detection device comprising: a detection means (2) for detecting breakage of the rod (3).