JP2000052989A - Connection testing method in replacing railway electronic interlocking device, and light switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connection testing method in replacing a railway electronic interlocking device capable of shortening the total number of working days required for a connection test of a new electronic interlocking device. SOLUTION: In the case of changing over to a new electronic interlocking device 20 from an existing electronic interlocking device 10, it is necessary to previously confirm whether the new electronic interlocking device 20 can put site members in predetermined action. This confirmation work is carried out in the procedure of (1) changeover to the new electronic interlocking device 20 from the existing electronic interlocking device 10, (2) a connection test of the new electronic interlocking device 20, (3) changeover to the existing electronic interlocking device 10 from the new electronic interlocking device 20, and (4) connection confirmation of the existing electronic interlocking device 10. As to the changeover processes (1), (3), time is considerably shortened in the case of adopting light switches 30a, 30b compared to the case of adopting a system of replacing a conventional optical connector, and time can be alotted to the connection test (2) by that portion, so that the total number of working days can be considerably shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection test method for replacing an existing electronic interlocking device for controlling the operation of a site member such as a traffic light or a switch with a newly installed electronic interlocking device, and this connection test method. The present invention relates to an optical switch suitable for:

[0002]

2. Description of the Related Art Electronic interlocking devices for railways (hereinafter, also simply referred to as electronic interlocking devices) are:
According to a program stored in an internal storage device, the operation of field members such as a traffic light and a point machine is controlled in accordance with input signals from various detectors and a keyboard.
In this electronic interlocking device, a signal line called an FNT line that controls a traffic light, a switch, and the like, and a signal line called an SNT line that is connected to an operation control panel are connected by optical connectors. .

When switching from a current electronic interlocking device to a new electronic interlocking device, it is necessary to check in advance whether the newly installed electronic interlocking device can operate the site members in a predetermined manner. There is. This confirmation work includes switching from the current electronic interlocking device to the new electronic interlocking device, connection test of the new electronic interlocking device, switching from the new electronic interlocking device to the current electronic interlocking device, and checking the current electronic interlocking device. This is performed in the procedure of connection confirmation, and is carried out using the downtime or uptime of the train.

In order to switch from the current electronic interlocking device to a new electronic interlocking device, it is necessary to replace the optical connectors of the FNT line and the SNT line. Since the replacement of the optical connector involves adjustment of the optical axis and level measurement each time the optical connector is connected, there is a problem that the connection test time is limited accordingly. That is, in order for the electronic interlocking device to operate normally, it is important to secure the level, and the FNT line connected to the electronic terminal must be at least -29 dBm.
The SNT line connected to the operation control panel in the signal handling room requires -36 dBm or more. However, such level measurement and optical axis adjustment requires at least 10 minutes with 4 lines and 20 minutes with 2 lines. This has limited the time for performing the above connection test operation. For this reason, there was a problem that the total number of working days was prolonged.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and a connection test method for replacing a railway electronic interlocking device which can reduce the total number of working days required for a connection test of a newly installed electronic interlocking device, and a light suitable for the method. It is intended to provide a switch.

[0006]

Means for Solving the Problems and Effects of the Invention In order to solve the above-mentioned problems, a first aspect of the present invention is to newly install a current electronic interlocking device for controlling the operation of field members such as a traffic light and a switch. In the connection test method when replacing the electronic interlocking device, the end of the member side optical cable connected to the site member is connected to the end of the current optical cable connected to the current electronic interlocking device or to the newly installed electronic interlocking device. Optical switch that connects one of the ends of the newly installed optical cable.
Switching the current electronic interlocking device to the newly installed electronic interlocking device The current → new switching process, the connection test process of performing a connection test of the new electronic interlocking device after the current → new switching process, and the new electronic interlocking device after the connection testing process Switching from the current electronic interlocking device to the current electronic interlocking device using the optical switch.
And a connection confirmation step of confirming the connection of the current electronic interlocking device after the current switching step.

In this connection test method, the switching between the current electronic interlocking device and the new electronic interlocking device is performed by the optical switch, so that the optical connector does not need to be replaced, and the optical cable is not damaged. In addition, in the limited time interval between trains, the time required for the current → new switching process and the new → current switching process is shortened because replacement is not required, and instead, a connection test of the newly installed electronic interlocking device is performed. The time can be lengthened, and the total number of working days can be shortened.

[0008] A second aspect of the present invention is to control the optical fiber by controlling either a bar state in which the prism comes out of the gap between the ends of the optical fiber or a cross state in which the prism is disposed in the gap. In an optical switch for switching, an arm having a rotation center substantially at the center and having the prism at one end, and an arm provided on the prism side from the rotation center of the arm and formed of a material that can be magnetically attached. A first projection made of a magnet, a first piston made of magnet provided at a position facing the first projection, and moved from a normal position to an upper position by a magnetic field generated when the first solenoid is excited, A second projection provided on the side of the arm opposite to the prism from the center of rotation and formed of a material that can be magnetically attached; and a second solenoid provided at a position facing the second projection. A second piston made of a magnet which moves from a normal position to an upper position by a magnetic field generated when the magnet is excited, and a first piston is arranged at an upper position by exciting the first solenoid and the second piston. The bar state is established by demagnetizing the solenoid and disposing the second piston at the normal position and magnetically attaching the second piston and the second protrusion, and the second solenoid is excited to excite the second piston. The two pistons are arranged at the upper position, the first solenoid is demagnetized, the first piston is arranged at the normal position, and the first piston and the first projection are magnetically attached to each other, thereby setting the cross state. And a control device.

In the optical switch, the control device excites the first solenoid to dispose the first piston in the upper position, deactivates the second solenoid to dispose the second piston in the normal position, and By magnetically attaching the two pistons and the second protrusions, a bar state, that is, a state where optical fibers facing each other are connected to each other is established. In addition, the second solenoid is excited to dispose the second piston at the upper position, and the first solenoid is demagnetized to dispose the first piston at the normal position, and the first piston and the first protrusion are magnetically attached. By doing so, a cross state, that is, a state in which the optical fibers crossing each other are connected is established. In this manner, in the bar state, the arm is not only held by the second projection magnetically attached to the second piston arranged at the normal position by continuous energizing action, but also at the upper position. Mechanically held by one piston, and
In the cross state, the arm is not only held by the first projection magnetically attached to the first piston arranged at the normal position by continuous energizing action, but also by the second piston arranged at the upper position. It is held mechanically. For this reason, even when this optical switch is used in a place where the vibration is severe such as around a railway, there is no possibility that the state of the optical switch is unexpectedly switched. Even if any solenoid is demagnetized due to a power failure or the like, the second projection is magnetically attached to the second piston arranged at the normal position in the bar state, and the first projection arranged at the normal position in the cross state. Since the first protrusion is magnetically attached to the piston, the state of the optical switch is maintained as it is. From such a thing,
This optical switch is suitable for use in the connection test method for replacing a railway electronic interlocking device described as the first aspect of the present invention.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a system configuration diagram for performing a connection test when replacing a railway electronic interlocking device, FIG. 2 is an explanatory diagram showing an internal structure of an optical switch, (a) is a plan view, and (b) is a side view. It is. FIG. 3 is an explanatory diagram of a switching state by an optical switch. 4A and 4B are explanatory diagrams when the optical switch is in a bar state, where FIG. 4A shows a normal state and FIG. 4B shows a power outage. 5A and 5B are explanatory diagrams when the optical switch is in a cross state, where FIG. 5A shows a normal state and FIG. 5B shows a power outage state.

As shown in FIG. 1, a system for performing a connection test at the time of replacing a railway electronic interlocking device includes a current electronic interlocking device 10 having current optical cables 11 and 12 and new optical cables 21 and 22. New electronic interlocking device 20 equipped
, Optical switches 30a and 30b, a control panel optical cable 40 and an electronic terminal optical cable 50 as member side optical cables.
And operation control panel 41, electronic terminal 51,
It is composed of a traffic light 53 and the like, and a control device 60.

The electronic interlocking devices 10 and 20 are used in railways, and operate in accordance with a program stored in an internal storage device (not shown) in response to input signals from various detectors and keyboards (not shown). 41
Control the electronic terminal 51 and the metallic cable 5
Signal 53, point 54, AT
It controls the operation of an S (automatic train stop device) 55 and the like.

Current optical cable 11 and new optical cable 2
1 is a control panel optical cable 40 via an optical switch 30a.
And one of them is connected to the control panel optical cable 40 by the optical switch 30a. The current optical cable 12 and the new optical cable 22 are connected to the optical switch 3.
Ob is connected to the electronic terminal optical cable 50, and one of them is connected to the electronic terminal optical cable 50 by the optical switch 30b. The control panel optical cable 40
Is a signal line called an SNT line, and the electronic terminal optical cable 50 is a signal line called an FNT line, and each line is composed of four lines.

Since the optical switches 30a and 30b have the same configuration, the optical switch 30a will be described with reference to FIG. The optical switch 30a includes a prism 31, an arm 32, first and second pistons 35, 3
6 and so on. The prism 31 is attached to one end of an arm 32 having a center of rotation C at substantially the center, and can move in and out of the gap between the optical cables 11 and 21 and the optical cable 40. The arm 32 has a first protrusion 33 provided on the prism 31 side from the rotation center C, and a second protrusion 34 provided on the side opposite to the prism 31 from the rotation center C. Each of the first and second projections 33 and 34 is formed of a material that can be magnetically attached (here, a metal mainly composed of iron). This optical switch 30a is an optical cable 1
When the optical cable 40 is outside the gap between the optical cables 1 and 21, FIG.
The current optical cable 11 is connected to the control panel optical cable 40 as shown by a dotted line (this connection state is called a bar state), and when it is in the gap, the new optical cable 21 is connected to the control panel optical cable as shown by a solid line in FIG. 40 (this connection state is referred to as a cross state).

The first and second pistons 35 and 36 are members made of permanent magnets provided at positions facing the first and second projections 33 and 34, respectively, and have cylindrical first and second solenoids 37 and 36, respectively. 38. When the first solenoid 37 is excited, the first piston 35 repels a magnetic field generated by the first solenoid 37 and rises from a normal position (lower position) to an upper position. When the first solenoid 37 is demagnetized, the first piston 35 normally operates under its own weight. Return to position. The first piston 35 may be provided with a magnet below the first solenoid 37 so as to return to the normal position by the action of the magnet, or a spring for biasing the first piston 35 to the normal position. It may be possible to return to the normal position by an urging member such as the above. The same applies to the second piston 36,
When the second solenoid 38 is excited, it rises to the upper position, and when it is demagnetized, it returns to the normal position.

The control device 60 is a circuit for controlling whether or not to apply a voltage to the first and second solenoids 37 and 38. When a changeover switch (not shown) is set to the "current" side, the optical switch 30a , 30b first solenoid 37
Only the first solenoid 37 is excited by applying a voltage to only the first solenoid 37. Then, the second piston 36 of the optical switch 30a, 30b remains in the normal position, and only the first piston 35 rises to the upper position. At this time, the first protrusion 33 is pushed up by the first piston 35, and the second protrusion 34 is attracted to the second piston 36 made of a permanent magnet, so that the prism 31 is pulled out from the gap between the optical fibers upward. It is held (see FIG. 4A). Therefore, the current optical cable 11 and the control panel optical cable 40 are connected by the optical switch 30a, and the current optical cable 12 is connected by the optical switch 30b.
And the electronic terminal optical cable 50 are connected.

On the other hand, a changeover switch (not shown) is "newly installed".
Side of the optical switch 30a, 30b
A voltage is applied only to the solenoid 38 to make the second solenoid 3
Only 8 is excited. Then, the optical switches 30a, 30
The first piston 35b remains in the normal position, and only the second piston 36 rises to the upper position. At this time, the second projection 34 is pushed up by the second piston 36 and the first projection 33
Is attracted to the first piston 35 made of a permanent magnet, so that the prism 31 is held in a state of being disposed in the gap between the optical fibers (see FIG. 5A). Therefore, the new optical cable 21 and the control panel optical cable 40 are connected by the optical switch 30a, and the new optical cable 22 and the electronic terminal optical cable 50 are connected by the optical switch 30b.

When the level attenuation between the electronic interlocking processing device and the electronic terminal (optical cable length 570 m) was actually measured, as shown in FIG. 6, it was -22.7 dBm as a whole and -1.1 dBm in the optical switch. , The minimum operation level (−29 dBm) in the FNT line was sufficiently cleared, and the design value of −23.0 dBm was also cleared. Similarly, the minimum operation level (-36 dBm) of the SNT line was sufficiently cleared.

Next, an example of using the system of the present embodiment will be described. When switching from the current electronic interlocking device 10 to the newly installed electronic interlocking device 20, the new electronic interlocking device 20 determines the site members (the operation control panel 41, the traffic light 53, the switch 54, the ATS 55, etc.) in advance. It is necessary to confirm in advance whether the operation can be performed as described above, and the system of the present embodiment is used when performing such a confirmation operation. This confirmation work is performed by switching from the current electronic interlocking device 10 to the newly installed electronic interlocking device 20,
The connection test of the new electronic interlocking device 20, the switching from the new electronic interlocking device 20 to the current electronic interlocking device 10, and the connection confirmation of the current electronic interlocking device 10 are performed.
It is implemented using the downtime and uptime of the train.

As to the confirmation work actually performed by the above-mentioned procedures, the case where the conventional method of replacing the optical connector is adopted and the case where the optical switch is adopted as in the present embodiment are compared. As a result, in the above switching process, the conventional method requires 10 minutes per line including adjustment and level measurement of whether or not the minimum operation level can be secured, whereas in the present embodiment, it is less than 1 minute. Significantly shortened. This point will be described by taking an example of the downtime of Obu Station on the Tokaido Main Line. As shown in FIG. 7, in the conventional method, switching takes 20 minutes each time and a total of 40 minutes are spent for the switching work. In the embodiment, the switching can be performed in a total of 10 minutes in 5 minutes including the switching of the metallic cable 52. In the present embodiment, a difference of 30 minutes required for the switching work can be allocated to the connection test process, and the total number of working days of the confirmation work performed in the above-described procedures can be significantly reduced.

In the optical switches 30a and 30b, the first solenoid 37 is excited to dispose the first piston 35 in the upper position, and the second solenoid 38 is demagnetized to dispose the second piston 36 in the normal position. Second piston 36
By magnetically adhering the second protrusion 34 and the second protrusion 34, a bar state is established, and the second solenoid 38 is excited to dispose the second piston 36 at the upper position, and the first solenoid 37 is demagnetized to deactivate the first piston 35. In the normal position and the first
A cross state is created by magnetically attaching the piston 35 and the first protrusion 33. Thus, in any of the bar state and the cross state, in the bar state,
The arm 32 is not only held by magnetically attaching the second protrusion 34 to the second piston 36 arranged at the normal position, but also mechanically held by the first piston 35 arranged at the upper position. Further, in the cross state, the arm 32 is not only held by the first projection 35 magnetically attached to the first piston 35 arranged at the normal position, but also by the second piston 36 arranged at the upper position. It is held mechanically. For this reason, the optical switches 30a,
In the case of 0b, there is no possibility that the switch state is unexpectedly switched even in a vibrating place such as around a railway.

Even if any of the solenoids 37 and 38 is demagnetized due to a power failure or the like, the second projection 34 is magnetically attached to the second piston 36 disposed at the normal position in the bar state, and in the cross state. The first placed in the normal position
Since the first protrusion 33 is magnetically attached to the piston 35, the states of the optical switches 30a and 30b are maintained as they are.
Specifically, in the bar state shown in FIG. 4A, when the power supply to the first solenoid 37 is stopped and demagnetized, the first piston 35 returns to the normal position by its own weight, but the arm 32 moves to the second protrusion 34. Is in the normal position.
, The bar state is maintained. Also,
In the cross state of FIG. 5A, the second solenoid 38
When the power is stopped and the magnet is demagnetized, the second piston 36 returns to the normal position by its own weight, but the arm 32 moves to the first position.
Since the projection 33 is magnetically attached to the first piston 35 at the normal position, the cross state is maintained.

In other words, the optical switches 30a and 30b do not have the possibility that the switch state is unexpectedly switched even in a violent place such as around a railway.
Even if the solenoid is demagnetized due to a power failure or the like, the switch state is maintained as it is, so that the system is suitable for the system of the present embodiment.

It should be noted that the embodiments of the present invention are not limited to the above-mentioned embodiments at all, and it goes without saying that various forms can be adopted as long as they fall within the technical scope of the present invention.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram for performing a connection test when replacing an electronic interlocking device for a railway.

FIG. 2 is an explanatory diagram showing an internal structure of the optical switch;
(A) is a plan view and (b) is a side view.

FIG. 3 is an explanatory diagram showing a bar state and a cross state of the optical switch.

FIGS. 4A and 4B are explanatory diagrams when the optical switch is in a bar state, where FIG. 4A shows a normal state and FIG.

5A and 5B are explanatory diagrams when the optical switch is in a cross state, where FIG. 5A shows a normal state and FIG. 5B shows a power outage state.

FIG. 6 is a graph showing a level attenuation between an electronic interlocking device and an electronic terminal.

FIG. 7 is a comparison diagram between a conventional method and a present embodiment for a checking operation.

[Explanation of symbols]

10, 20 ... electronic interlocking device, 11, 12 ... current optical cable, 21, 22 ... new optical cable, 30
a, 30b: optical switch, 31: prism, 3
2 ... arm, 33 ... first projection, 34 ... second
Projection, 35: first piston, 36: second piston, 37: first solenoid, 38: second solenoid, 40: control panel optical cable, 41: operation control panel, 50 ... Electronic terminal optical cable, 51 ... Electronic terminal, 52 ... Metallic cable, 53 ... Signal signal, 54 ... Point machine, 55 ... ATS, 60
··Control device.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Katsumi Tamakoshi 1-4-1 Meiji Station, Nakamura-ku, Nagoya, Aichi Prefecture Inside Tokai Passenger Railway Co., Ltd. (72) Inventor Tetsumasa Meieki, Nakamura-ku, Nagoya-shi, Aichi 1-4-1 Tokai Passenger Railway Co., Ltd. (72) Inventor Takashi Taniguchi 1-1-1, Meieki, Nakamura-ku, Nagoya-shi, Aichi Prefecture Tokai Passenger Railway Co., Ltd. (72) Inventor Hachiro Arai Urawa-shi, Saitama 1-13-8 Kamikizaki Inside the Yono Works of Nippon Signal Co., Ltd. (72) Keisuke Watanabe 2-6-1, Marunouchi, Chiyoda-ku, Tokyo Inside Furukawa Electric Co., Ltd.

Claims (3)

[Claims] 1. A connection test method for replacing a current electronic interlocking device for controlling the operation of a site member such as a traffic light or a point switch with a new electronic interlocking device, wherein the member side optical cable connected to the site member is provided. At the end of
An optical switch that connects either the end of the current optical cable connected to the current electronic interlock or the end of the new optical cable connected to the new electronic interlock, replaces the current electronic interlock with the new electronic interlock. Switch to present →
The optical switch performs a new switching process, a connection test process for performing a connection test of the newly installed electronic interlocking device after the current → new switching process, and a switching from the newly installed electronic interlocking device to the current electronic interlocking device after the connection testing process. A connection test method at the time of replacing a railway electronic interlocking device, comprising: a new-to-current switching process; and a connection checking process for checking the connection of the current electronic interlocking device after the new-to-current switching process. 2. An optical fiber for switching an optical fiber by controlling one of a bar state in which a prism comes out of a gap between ends of an optical fiber and a cross state in which the prism is disposed in the gap. In the switch, an arm having a center of rotation substantially at the center and having the prism at one end, and a first arm provided on the side of the prism from the center of rotation and formed of a material that can be magnetized. A protrusion, a first piston made of a magnet, which is provided at a position facing the first protrusion and moves from a normal position to an upper position by a magnetic field generated when the first solenoid is excited, A second protrusion formed of a material that can be magnetically attached, provided on a side opposite to the prism from a rotation center, and provided at a position facing the second protrusion, and a second solenoid is excited. And a second piston made of magnet which rises from a normal position by a magnetic field generated by the second solenoid, and is provided at a position opposed to the second protrusion, and is magnetized from the normal position by a magnetic field generated by excitation of the second solenoid. A second piston made of magnet that moves to an upper position, and the first solenoid is excited to dispose the first piston in an upper position, and the second solenoid is demagnetized to dispose the second piston in a normal position. At the same time, the second piston and the second protrusion are magnetically attached to bring the bar state, and the second solenoid is excited to dispose the second piston at an upper position and demagnetize the first solenoid. Then, the first piston is arranged at a normal position and the first piston and the first projection are magnetically attached to each other, thereby bringing the cross state into place. An optical switch, comprising: 3. The connection test method according to claim 1, wherein the optical switch according to claim 2 is used as the optical switch.