JP2009001110A - Switching device for railroad signal and method of renewing signal control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To renew a signal control system with the same easiness as the switching of cables 13, 23 by switch operation even if the structures and characteristics of the cables are different. <P>SOLUTION: In the existing signal control system 1 for individually transmitting a control signal from an interlocking device 11 to each lamp of a signal 15 through a multi-core cable 13, the signal 15 is renewed to an LED signal 25, and a switching device 30 for a railroad signal having: a first connection means 33 for individual transmission; a second connection means 31 adaptable to LAN; and a small control terminal 24, is installed. Also, the multi-core cable 13 is connected to the first connection means 33 through a cable 35 for continuing the individual transmission, a LAN cable 23 is connected to the second connection means 31, and the individual transmission is changed to a LAN transmission by detaching/attaching cables 35, 36 from/to a connector 33. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a signal control system updating method for updating a signal control system that performs light control of railway traffic lights, and more specifically, a control signal is multiplexed from an existing signal control system that individually transmits control signals using multicore cables. The present invention relates to a signal control system updating method for updating a signal control system to a new signal control system that transmits data using a network cable. The present invention also relates to a railway traffic signal switching device used for updating the signal control system.

  The signal control system whose outline configuration diagram is shown in FIG. 6 (a) is an old-style individual wiring system installed on many routes, and a control signal is transmitted from the existing interlocking device 11 (existing signal control device) to the traffic light 15. Are transmitted individually to the lamps Y1 and Y2 of the traffic light 15 via the multi-core cable 13. As a specific example, the existing signal control systems 11 to 15 include an electronic interlocking device 11 already installed in an equipment room such as a station, a multi-core cable 13 drawn out from there, and a connection box 14. And a signal device 15 beside the track connected to the multicore cable 13 via the cable. A large number of sets of multi-core cables 13, a connection box 14, and a traffic light 15 are provided for one interlocking device 11, but only one set is shown here. In addition, the traffic signal 15 is equipped with a plurality of signal bulbs (lights), but only two G-shaped filament type signal bulbs are shown here.

  The signal light bulbs Y1 and Y2 are connected in series because they are the targets of the combined display in which two lights are turned on simultaneously. Further, in order to control and drive these lighting / extinguishing lamps, a dedicated relay AR for generating a control signal is provided in the interlocking device 11, and the control signal is transmitted from the interlocking device 11 to the signal bulbs Y1 and Y2 connected in series. A pair of electric wires to be transmitted is allocated from a number of electric wires of the multicore cable 13 and dedicated. Although not shown in the figure, for signal bulbs that are not subject to composite display, a dedicated relay for generating a control signal is individually provided in the interlocking device 11, and a pair that transmits the control signal from the interlocking device 11 to the signal bulb. Are allocated from a number of wires of the multi-core cable 13 and are dedicated.

As an alternative to the filament type signal light bulb, an LED lamp (LED type signal device) employing a large number of light emitting diodes as a light source has been developed (see Non-Patent Document 1, for example).
In addition, an LED signal light bulb has been developed in which when one of the two lamps is used in series, one of the lamps is extinguished due to a disconnection failure (see, for example, Patent Document 1).
Furthermore, a signal control system has been newly developed that abstracts and multiplexes control signals transmitted from a signal control device to a traffic light (for example, see Patent Document 2 and Non-Patent Document 2).

FIG. 6B is a schematic configuration diagram of a new signal control system adopting a network system for transmission of such control signals.
The signal control systems 21 to 25 include an electronic interlocking device 21 and a central control device 22 as signal control devices installed in an equipment room such as a station, and a LAN (Local Area Network) cable led out from there. 23, a small control terminal (control unit) 24 connected thereto, and a traffic light 25 installed beside the track. A single LAN cable 23, a large number of small control terminals 24, and a traffic light 25 are provided for one set of interlocking device 21 and central control device 22, but only one set is shown here. In addition, the traffic light 25 is equipped with a plurality of lamps, but only two LED lamps are shown.

In this case, communication between the signal control devices 21 and 22 and each small control terminal 24 is performed by a multiplexed information transmission method using the Internet protocol (IP). As the LAN cable 23 that mediates the communication, an optical cable that can operate stably even in a severe railway environment is adopted.
Then, the control data (control signal) determined by the interlocking device 21 and abstracted by the central control device 22 is transmitted to the small control terminal 24 with IP address specification via the LAN cable 23 and is controlled by the small control terminal 24. Based on the constants, the control signals are embodied and individualized to be individually transmitted control signals, and individually drive the relays Y1R and Y2R.

  A pair of electric wires are allocated exclusively between the relay Y1R of the small control terminal 24 and the LED lamp Y1 of the traffic light 25, and between the relay Y2R of the small control terminal 24 and the LED lamp Y2 of the traffic light 25. Another pair of electric wires is allocated exclusively, and the LED lights Y1 and Y2 are not connected in series in the traffic light 25, but if the control constant of the small control terminal 24 is set appropriately, the LED lamp It is not necessary to change the connection between the lamps Y1 and Y2, and when the LED lamps Y1 and Y2 are the target of the combined display, the two lamps can be turned on simultaneously, and the LED lamps Y1 and Y2 are combined. It can be turned on individually when it is not the target.

Since a new signal control system using such an optical LAN has been developed, it is required to replace the old signal control system with individual wiring already provided with a new system. When updating, it takes a lot of trouble.
In other words, a huge number of equipment and cables need to be replaced in the improvement work of interlocking devices in the station equipment room and on-site traffic lights, but the switchover from the old system to the new system takes time to stop train operation from the last train to the first train. It must be done in the short time of the night, which is a belt. Therefore, in the preparation stage, proceed with cable laying and device installation gradually over the course of several days, and after preparations for switching, do many people stick to distributed devices and change wiring? The signal control system was renewed in a short time by switching the switch between the existing cable and the new cable at once.

JP 2002-173028 A JP 2006-281960 A Japan Railway Electrical Engineering Association "Railway and Electrical Technology" 2005.2 VOL.16 No.2 pp27-30 "LED Signals" 2005 IEICE Conference on Industrial Applications [III-251〜252] “Development of Network Signal Control System” JREA, Vol.48, No.5 pp.30839 (2005)

However, because the structure and characteristics of the cable connecting the equipment room and the site differ between the old existing signal control system using individual wiring and the new candidate signal control system using optical LAN, Not available. Therefore, what can be used with the conventional update method is a method in which many people stick to distributed devices and change the wiring. In such an update method, prior work and test until system switching are performed. Since there are many items, a lot of manpower and work schedules are required, and the construction cost is also increased. In addition, since the switching work that must be completed carefully and quickly in a short time so as not to hinder the operation of the train is performed relying solely on human resources, an excessive burden is placed on the worker.
Accordingly, it is a first technical problem to enable the signal control system to be updated with ease comparable to cable switching by switch operation even if the structure and characteristics of the cable are different.

In addition, when the signal control system is updated, it is required to replace the old filament light bulb of the traffic light with a new LED lamp (LED traffic light). However, the compact control terminal of the new signal control system is complex as described above. Even with LED signal bulbs that are compatible with current displays (see, for example, Patent Document 1) and LED lamps that are not, it is possible to control each lamp individually and display them in a complex manner without any inconvenience. In the traffic light 25, unlike the old traffic light 15, signal bulbs and lamps are not locally connected in series.
However, even if the serial connection at the traffic light is canceled and each lamp is controlled individually, until the new and old switching of the signal control system is completed, the combined display target is under the control of the old signal control device. The signal bulbs and lamps must be displayed in combination.
Therefore, a second technical problem is to enable each lamp that has been individually controlled to be displayed in a composite manner even in the old system based on a serial connection.

Furthermore, even in the new signal control system, it is required to add a fail-safe function to turn off the other lights when one of the lights to be shown in the composite display is disconnected. In the small control terminal 24 in which each light of the traffic light 25 is individually controlled / individually driven even when multiplexed transmissions 21 and 22 are performed, for example, according to the state of the relay Y1R, the LED lamp Y1 Based on the feedback signal FB1 that detects the current supplied to (one lamp) and the feedback signal FB2 that detects the current supplied to the LED lamp Y2 (other lamp) according to the state of the relay Y2R, the microprocessor (MPU ) Etc., the fail-safe function can be easily realized, so in the new traffic light 25 that is premised on connection with it, Unit 15 unlike, is not essential to use a G-shaped filament type signal bulb or its substitute LED signal bulb composite current-target lamp unit.
However, even though the requirements for each lamp have been relaxed in the new signal control system, until the new and old switching of the signal control system is completed, the LED lamps subject to the combined display under the control of the old signal control device ( Light) must be displayed in a fail-safe manner.
Therefore, it is a third technical problem to ensure fail-safety even when the individual lamps that are individually controlled are displayed in a composite manner in the old system based on the premise of serial connection.

  The railway traffic signal switching device according to the present invention (Solution 1) was devised to solve such a problem, and relays a control signal transmitted from a signal control device such as an electronic interlocking device to a traffic signal. A railroad traffic signal switching device comprising: first connection means capable of connecting a multi-core cable for individually transmitting the control signal to each lamp of the traffic signal; and a network cable for abstracting and multiplexing the control signal And a small control terminal that is connected to the second connection means and enables the individual transmission of the control signal by individualizing and embodying the control signal. The control signal is relayed by causing any one of the second connection means to function.

  The signal control system update method of the present invention (solution means 2) is a signal control system update method performed using the railway traffic signal switching device of the solution means 1, and is specifically as follows. Yes. That is, when the control signal is transmitted from a signal control device such as an electronic interlocking device to the traffic signal, the control signal is individually transmitted to each lamp of the traffic signal via a multicore cable. The railway signal equipment switching device described above is installed, and the first connection means is connected to the multi-core cable so that the first connection means functions, and the control signal is abstracted to the second connection means. A network cable to be multiplexed and transmitted is connected, and then the function of the first connection means is stopped and the second connection means is functioned by detaching the connector.

  Further, the signal control system updating method (solving means 3) is the signal control system updating method of the above-mentioned solving means 2, wherein the control signal of any one of the traffic lights is reflected in the control signal of another lamp. The control means is provided in front of or inserted in the first connection means.

  The signal control system update method of the present invention is (Solution means 4), which is the signal control system update method of Solution means 3, wherein any one of the lights of the traffic light to be shown in combination is disconnected. A fail-safe function for turning off other lights when the lights are turned off is added to the composite display control means.

In such a railway traffic signal switching device of the present invention (solution 1), when a new signal control system is installed in parallel with an old existing signal control system, a multicore cable of the existing signal control system is connected. By connecting to the first connection means and connecting the network cable of the new signal control system to the second connection means, even if the structure and characteristics of both cables are different, the old and new systems can be easily switched by attaching and detaching connectors. Can do.
Therefore, according to the present invention, the signal control system can be switched with ease equivalent to the cable switching by the switch operation by detaching the connector even if the structure and characteristics of the cable are different. It is possible to realize a railway traffic signal switching device useful for solving the problem.

Further, in the signal control system updating method of the present invention (solution 2), when only the old signal control system is installed, and the new signal control system is installed in parallel, both signal systems are connected to both systems. In addition, the railway signal switching device of the solving means 1 is interposed between the multi-core cable of the existing signal control system and the first connecting means so that the first connecting means functions. Even if they are installed side by side, the existing signal control system continues to operate without delay. Then, by stopping the function of the first connecting means by detaching the connector and causing the second connecting means to function, the old system can be stopped and the new system can be operated easily and quickly. When the old system is removed, the update of the signal control system is completed.
Therefore, according to the present invention, even if the structure and characteristics of the cable are different, the signal control system can be updated with ease comparable to the cable switching by the switch operation by detaching the connector. Solved.

Further, in the signal control system updating method of the present invention (Solution means 3), the composite display control means is provided on the first connection means for maintaining the operation of the old-style signal control system under the new and old side-by-side situation. Therefore, even if the signal is updated and the individual lights are individually controlled while the control of the old signal control device is continued, Since the mutual display processing for the composite display is performed by the composite display control means, the existing signal control system continues to operate without any delay including the operation of the composite display.
Therefore, according to the present invention, the lamps that are individually controlled can be combined and displayed even in the old system based on the serial connection, and the first and second technical problems are solved.

Further, in the signal control system update method of the present invention (solution means 4), since the fail-safe function is added to the composite display control means, the control of the old signal control device is continued. Even if the traffic light is updated and each lamp is individually controlled, any one of the multiple display target lamps can be used when performing the mutual reflection process on the control signal of the multiple display target lamps. When the lamp is disconnected, other lamps are also turned off.
Therefore, according to the present invention, the fail-safety is ensured even when the individually controlled lamps are combined and displayed by the old method based on the serial connection, and the first to third technical problems are all solved.

With regard to such a railway traffic signal switching device and signal control system updating method of the present invention, specific modes for carrying out this will be described with reference to the following first to fifth embodiments.
The embodiment 1 shown in FIG. 1 embodies the above-described solving means 1 and 2 (claims 1 and 2 as originally filed), and the embodiment 2 shown in FIG. The embodiment 3 shown in FIG. 3 embodies the above-described solution 4 (claim 4 at the beginning of the application), and FIG. Example 4 shown and Example 5 shown in FIG. 5 are modifications.
In the drawings, the same reference numerals are given to the same components as those in the prior art, and therefore, repeated explanations are omitted. Hereinafter, the differences from the prior art will be mainly described.

  About the Example 1 of the switching apparatus for railway traffic signals of this invention, the specific structure is demonstrated referring drawings. FIG. 1: is a schematic block diagram of the new and old coexistence system which (b) and (c) interposed the switching apparatus 30 for railway traffic signals. Here, five LED lamps G, Y1, R, Y2, and Y3 are shown as each lamp, but the number of lamps installed varies depending on the traffic light.

  This railway traffic signal switching device 30 relays a control signal transmitted from a signal control device such as an electronic interlocking device to a traffic signal, but it is an old-established system that is individually wired with a multicore cable 13 from a station equipment room to a remote railway site. The signal control systems 11 to 15 and the new signal control systems 21 to 25 networked by the optical LAN cable 23 from the station equipment room to the along-site site, and either one of the old and new systems can be connected by detaching the connector. Select and relay the control signal of the selected system.

  Therefore, in addition to the small control terminal 24 (control unit) described above being provided in the railway traffic signal switching device 30 (see FIGS. 1B and 1C), the small control terminal 24 and the signal control device are provided. An optical connector 31 to which a LAN cable 23 can be connected so as to enable communication with 21 and 22; a multi-pin connector 32 connected to the output side of the small control terminal 24; Lamps G, Y1, R, Y2, Y3 and a connector 33 connected by individual wires are provided. In addition, the multi-core cables 35 and 36 are set as a set with the switching device 30 for railway traffic signals, and these are removed when the old and new systems are switched.

  Since one end of the cable 35 is connected to the multi-core cable 13 at the connection box 14 and a connector suitable for the connector 33 is attached to the other end of the cable 35, the connector 33 is connected to the existing interlocking device 11 (existing The first connecting means is capable of connecting the multi-core cable 13 for individually transmitting the control signal from the signal control device) to each lamp of the traffic light. When the cable 35 is connected to the connector 33 (see FIG. 1B), the first connecting means functions effectively, and the control signal of the interlocking device 11 is transmitted to the LED lamps G, Y1, R, Y2 of the traffic light 25. , Y3, the operation of the existing signal control systems 11 to 15 can be continued without any inconvenience even when the railway traffic signal switching device 30 is interposed.

  The optical connector 31 is a second connection means that can connect an optical LAN cable 23 (network cable) that abstracts and multiplexes the control signals of the signal control devices 21 and 22 and transmits them. Even if the connector 32 and the connector 33 are not connected, the relay function of the control signal via the second connection means is not completely effective, and a partial process from the interlocking device 21 to the small control terminal 24 is not performed. Only a state where the operation can be confirmed is established. When the cable 35 is disconnected from the connector 33 and the connector 33 and the connector 32 are connected by the cable 36 (see FIG. 1C), the first connecting means stops functioning, and instead the second connecting means and the small size are connected. Since the control signal relay function with the control terminal 24 becomes fully effective, the control signals of the signal control devices 21 and 22 are relayed to the LED lamps G, Y1, R, Y2 and Y3 of the traffic light 25. Even if the traffic signal switching device 30 remains, the operation of the new signal control systems 21 to 25 is started without any inconvenience.

  A first embodiment of the signal control system updating method of the present invention performed using such a railway traffic signal switching device 30 will be described with reference to the drawings. FIG. 1A is a schematic configuration diagram of an existing old-style individual wiring system 11 to 15, and FIG. 1B is an overview of an old and new coexistence system in which a new network system is installed side by side with a railway traffic signal switching device 30. The configuration diagram, (c) is a schematic configuration diagram of a new and old coexisting system in which the connection is switched from the old type to the new type, and (d) is a schematic configuration diagram of the new type signal control systems 21 to 25 left after the update.

  In many existing railways, the above-described interlocking device 11 (existing signal control device), the multi-core cable 13, the connection box 14, and the traffic signal 15 are installed on the route (FIGS. 1A and 6A). The signal for controlling the lighting / extinction of the signal is individually transmitted from the interlocking device 11 to each light of the traffic light 15 via the multi-core cable 13 by the old signal control systems 11 to 15 using such individual wiring. Has been. In the first embodiment, since the case where the composite indication is not necessary is taken up, the traffic light 15 may be updated to the traffic light 25 at the same time as or earlier than the installation of the switching device 30 for the railway traffic signal. In other embodiments including the illustration, the update from the traffic signal 15 to the traffic signal 25 is performed simultaneously with the installation of the railway traffic signal switching device 30.

  Assuming that the traffic light 15 has been updated to the traffic light 25 at the same time or earlier, when the existing old signal control systems 11 to 15 (25) are updated to the new system, first (see FIG. 1B), connection The connection between the box 14 and the traffic signal 25 is once released, the cable 35 is connected to the multicore cable 13 at the connection box 14, and the railway traffic signal switching device 30 is installed. 25 is connected with a multi-core cable to connect the connector 33 and each light of the traffic light 25, that is, the LED lamps G, Y1, R, Y2, and Y3 with individual wires, and then connect the cable 35 to the connector 33. . Thereby, since the 1st connection means functions effectively in the state where the switching apparatus 30 for railway traffic signals is interposed, the existing signal control system is restored and the train operation can be resumed.

Since the connectors 32 and 33 are not connected, the interlock device 21 and the central control device 22 are installed, the LAN cable 23 is laid, and the LAN cable 23 is connected to the optical connector 31. Confirmation of the operation of the small control terminal 24 can be carried out for each convenience without interfering with train operation by the existing signal control system.
When all the traffic lights 15 (25) under the control of the interlocking device 11 are updated to the traffic lights 25 and the interfacing connection of the railway traffic signal switching device 30 is completed, preparations for switching between the old and new systems are completed.

  Then, the operating state of the old and new systems is switched at an appropriate time that does not interfere with train operation. The switching operation is performed by removing the cable 35 from the connector 33 and connecting the connector 33 and the connector 32 with the cable 36 to the railway traffic signal switching device 30 (see FIG. 1C). This work must be completed within one train operation stop period for all the railway traffic signal switching devices 30 within the range to be updated. It can be performed all at once with fewer hands than before.

Thus, since the new signal control systems 21 to 25 connected by the LAN cable 23 operate, the unnecessary signal control systems 11 to 15 can be removed at any time, and later the new signal control systems 21 to 25 are used. (30) is left (see FIG. 1D).
As is clear from the above description, in the signal control system updating method of the present embodiment using the railway traffic signal switching device 30, even if the structures and characteristics of the cables 13 and 23 are different, the connector can be attached and detached. The signal control system can be easily updated.

  A specific configuration and the like of a composite display controller 40 suitable for the railway traffic signal switching device 30 of the present invention and a signal control system updating method performed using the same will be described with reference to the drawings. . 2A is a schematic configuration diagram of a new and old coexisting system in which a railway traffic signal switching device 30 is interposed, and FIG. 2B is a circuit diagram of a composite display controller 40 placed in front of the railway traffic signal switching device 30. It is.

This signal control system update method differs from the update method of the first embodiment described above in that two LED lamps Y3 and Y2 out of the five lights installed in the traffic light 25 are the targets of combined display. Correspondingly, the composite display controller 40 is also used.
The composite display controller 40 (see FIG. 2 (a)) is installed together with the railway traffic signal switching device 30 and is placed in front of the cable 35 and the connector 33 (first connection means) of the railway traffic signal switching device 30. The In this example, the connection box 14 and the cable 35 are inserted and connected, and are placed outside the casing of the railway traffic signal switching device 30 so that the cable 35 can be reused immediately after being removed.

  The composite display controller 40 (see FIG. 2 (b)) receives five control signals individually transmitted from the interlocking device 11 and inputs them to each light of the traffic light 25, that is, five LED lamps G. , Y1, R, Y2, and Y3, the YY control signal of the composite display is sent to both of the LED lamps Y3 and Y1 by the transformer 41 when relaying, and YG of the composite display is also used. The control signal is sent to both of the LED lamps Y2 and G by the transformer 42, the R control signal which is not combined display is sent only to the LED lamp R by the transformer 43, and the Y control signal which is also not combined display is transferred to the transformer. The G control signal is sent only to the LED lamp Y1 at 44, and the G control signal which is not combined display is sent only to the LED lamp G at the transformer 45.

In this case, the LED lamps G, Y1, R, Y2, and Y3 of the traffic light 25 are individually controlled via the railway traffic signal switching device 30 without being connected in series, but the connection between the cables 13 and 35 and the connector 33 is performed. Is established and the control of the existing interlocking device 11 works effectively, the composite display controller 40 converts the control signal based on the serial connection into a plurality of control signals. [Y3, Y1] and [Y2, G] are correctly displayed together, and LED lamps R, Y1, and G that are not composite display targets are correctly displayed alone.
Since other work contents are the same as the signal control system updating method of the first embodiment described above, the repeated explanation is omitted, but in this case, even if the structures and characteristics of the cables 13 and 23 are different, the connector The signal control system can be easily updated by detachment.

  A specific configuration of the composite display controller 50 suitable for the railway traffic signal switching device 30 of the present invention and a signal control system updating method performed using the same will be described with reference to the drawings. FIG. 3A is a schematic configuration diagram of an old and new coexisting system in which a railway traffic signal switching device 30 is interposed, and FIG. 3B is a schematic configuration diagram of a composite display controller 50 placed in front of the railway traffic signal switching device 30. FIG. 4C is a circuit diagram of the parallel drive circuit 52 in the composite display controller 50.

This signal control system update method is different from the update method of the second embodiment described above in that a composite display controller 50 is used instead of the composite display controller 40 (see FIG. 3A).
The composite display controller 50 is different from the composite display controller 40 in that the LED lamps G, Y1, R, Y2, and Y3 of the traffic light 25 should be combined and displayed [Y3, Y1], [Y2, For G], when any one of the lamps is disconnected and extinguished, a fail-safe function is added so that the other lamps are extinguished. Specifically (see FIG. 3B), parallel drive circuits 51 and 52 are introduced in place of the transformers 41 and 42 according to the composite display, respectively, and the transformers 43, 44, and 45 according to the single display are respectively left as they are. These are equivalent single drive circuits 53, 54 and 55.

  In the parallel drive circuit 52 to which the fail-safe function is added (see FIG. 3C), when a YG control signal (AC voltage) is input, it is converted to DC by the rectifier Rec, and the one-shot pulse generation circuit MM that receives this signal is converted. When the relay ST is lifted for a certain time (for example, 0.2 seconds) generated in the above, the output of the transformer T1 is energized to the LED lamp Y2 through the relay contact of the relay ST, and the LED lamp Y2 is turned on. . When an electric current flows through the LED lamp Y2, an AC signal is generated at the output of the current transformer CT1, and the relay YR operates by amplifying and rectifying the signal with the amplifier 1. Similarly, the relay GR operates. When the relay YR and the relay operate, the relay YGR is operated, and a current continuously flows through the LED lamp Y2 and the LED lamp G. For example, when the LED lamp Y2 is extinguished due to disconnection, the relay YR falls and the relay YGR falls, and the LED lamp G is not energized and extinguished.

  Such a parallel drive circuit 52 turns on the LED lamps Y2 and G to be compositely displayed when the YG control signal is instructed to turn on, but also turns off the LED lamp G when the LED lamp Y2 is cut off. When the LED lamp G is disconnected and extinguished, the LED lamp Y2 is also extinguished. Similarly, the parallel drive circuit 51 to which the fail-safe function is added turns on both the LED lamps Y3 and Y1 to be compositely displayed when the YY control signal is a lighting instruction, but when the LED lamp Y3 is disconnected. The LED lamp Y1 is also extinguished, and when the LED lamp Y1 is disconnected, the LED lamp Y3 is also extinguished.

  In this case, the contents of the update work and the composite display of the traffic lights are the same as the signal control system update method of the second embodiment described above, so the repeated description is omitted, but the composite display [Y3, Y1], [Y2, G] is provided with fail-safe properties. That is, if the connection between the cables 13 and 35 and the connector 33 is established and the control of the existing interlocking device 11 works effectively, the YY control is performed if the LED lamps Y3 and Y1 that are composite display targets are all normal. While the combined display of the signals is performed correctly, when any of the LED lamps Y3 and Y1 is disconnected, both the LED lamps Y3 and Y1 are extinguished. In addition, if both of the LED lamps Y2 and G to be compositely displayed are normal, the composite display of the YG control signal is correctly performed, whereas if any of the LED lamps Y2 and G is disconnected, the LED lamp Both units Y2 and G are extinguished. Thus, even if the LED lamps G, Y1, R, Y2, and Y3, which are individually controlled, are combined and displayed under the control of the old interlocking device 11 on the premise of serial connection, fail-safety is ensured.

The difference between the signal control system updating method of the present invention shown in FIG. 4 in the schematic configuration diagram of the old and new coexisting system with the railway signal switching device 60 interposed is different from the updating method of the third embodiment described above. Instead of the device 30, a railway signal device switching device 60 is used.
The railway traffic signal switching device 60 is different from the railway traffic signal switching device 30 in that a connector 61 and cables 62 and 63 are provided, and a cable 36 is not used. In FIG. 4, the power supply line and the insulating transformer are also shown, but this is an arbitrary matter.

The connector 61 is a multi-pin connector to which the cable 35 can be attached and detached, and one end of the multi-core cable 62 is connected thereto. The other end of the cable 62 is connected to the connector 33.
As with the cable 36, the multicore cable 63 has one end connected to the output side of the small control terminal 24 and the other end connected to the connector 33. However, unlike the cable 36, the other end of the cable 63 is connected to the connector together with the other end of the cable 62. This connector is not only detachable from the connector 33 but also connects the cables 62 and 63 in parallel. That is, the electric wires of the cable 62 and the electric wires of the cable 63 are connected in a one-to-one relationship with each other in the same order of arrangement.

In this case, when the railway traffic signal switching device 60 is installed, the cable 35 is first connected to the connector 61 without connecting the LAN cable 23. If it does so, the 1st connection means which consists of the connector 61, the cable 62, and the connector 33 will function in the state which the composite display controller 50 and the switching apparatus 60 for railway traffic signals intervened. And the existing signal control system which makes the existing interlocking | linkage apparatus 11 a control main body revives, and train operation can be restarted.
When switching between the old and new systems, the cable 35 is disconnected from the connector 61 and the LAN cable 23 is connected to the optical connector 31 instead.

Then, the optical connector 31 as the second connection means functions effectively, and the small control terminal 24 operates effectively accordingly, and further, the control signal is transmitted through the cable 63 and the connector 33 to the LED lamp G, Delivered to Y1, R, Y2, Y3. And train operation by control of new type signal control systems 21-25 (60) is attained.
Since other work contents are the same as those of the signal control system updating method of the third embodiment described above, the repeated explanation is omitted, but in this case, even if the structures and characteristics of the cables 13 and 23 are different, the connector The signal control system can be easily updated by attaching / detaching.

  The railway traffic signal switching device and the signal control system updating method of the present invention shown in FIG. 5 in the schematic configuration diagram of the old and new coexisting system with the railway traffic signal switching device 70 interposed are different from those of the third embodiment described above. The composite display controller 50 has been modified to be a composite display controller 80, and accordingly, the optical cable 81 is connected to the composite display controller 80 instead of the cable 35. The switching device 30 has been modified to become a railway traffic signal switching device 70.

  Regarding the composite display controller 80, the logical function related to the processing of the control signal follows the function of the composite display controller 50, but when the control signal is output, it is abstracted and multiplexed to generate an optical cable. The function has been expanded to perform electrical / optical conversion (E / O conversion) of transmission at 81. Although the detailed description of the extended function is omitted, a partial function of electrical / optical conversion by the signal control devices 21 and 22 is sufficient. The optical cable 81 is suitable for the optical connector 31 like the LAN cable 23, but may be shorter than the LAN cable 23. The railway traffic signal switching device 70 is different from the railway traffic signal switching device 30 in that the insertion hole for the cable 35 is not provided. However, if there is no problem even if the cable 35 insertion hole is open, the railway traffic signal switching device 30 is provided. It may be left as it is. In the railway traffic signal switching device 70, the small control terminal 24 and the connector 33 are always connected by a cable 36.

In this case, the optical connector 31 serves as the first connection means that can connect the multicore cable 13 via the composite display controller 80 and the optical cable 81 and the second connection means that can connect the LAN cable 23. .
Therefore, when switching between the old and new systems, the optical cable 81 may be disconnected from the optical connector 31 and the LAN cable 23 may be connected to the optical connector 31.

[Others]
In the above embodiment, the combined display controllers 40, 50, 80 are separate from the railway signal device switching devices 30, 60, 70. However, the combined display controllers 40, 50, 80 You may store in the housing | casing of the switching apparatus 30,60,70 for traffic signals.
Further, in the above embodiment, the composite display controllers 40, 50, 80 are placed in front of the first connecting means of the railway traffic signal switching devices 30, 60, 70, but the composite display controllers 40, 50, 80 may be inserted in the first connecting means.

Example 1 of the present invention shows a structure of a railway traffic signal switching device and a signal control system updating method using the same, (a) is a schematic configuration diagram of an existing old individual wiring system, (b) and (c) ) Is a schematic configuration diagram of a new and old coexisting system interposing a railway signal device switching device, and (d) is a schematic configuration diagram of a new-type network system left after updating. In Example 2 of the present invention, (a) is a schematic configuration diagram of a new and old coexisting system in which a railway traffic signal switching device is interposed, and (b) is a circuit diagram of a composite display controller. In Embodiment 3 of the present invention, (a) is a schematic configuration diagram of an old and new coexisting system interposing a railway signal device switching device, (b) is a schematic configuration diagram of a composite display controller, and (c) is a parallel drive circuit. FIG. In Example 4 of this invention, it is a schematic block diagram of the new and old coexistence system which interposed the switching apparatus for railway traffic signals. In Example 5 of this invention, it is a schematic block diagram of the new and old coexistence system which interposed the switching apparatus for railway traffic signals. A conventional railroad signal control system is shown, (a) is a schematic block diagram of an old style individual wiring system, (b) is a schematic block diagram of a new type network system.

Explanation of symbols

11 ... interlocking device,
13 ... multi-core cable, 14 ... junction box, 15 ... traffic light,
21 ... Interlocking device, 22 ... Central control device, 23 ... LAN cable,
24 ... Small control terminal (control unit), 25 ... Traffic light,
30. Switching device for railway traffic signal,
31 ... Optical connector, 32, 33 ... Connector, 35, 36 ... Cable,
40 ... Composite display controller, 41-45 ... Transformer,
50 ... Composite display controller,
51, 52 ... Parallel drive circuit (with fail-safe function),
53-55 ... Single drive circuit (transformer),
60 ... Switching device for railway traffic signals,
61 ... Connector, 62, 63 ... Cable,
70 ... Switching device for railway traffic signals,
80 ... Composite display controller (E / O conversion), 81 ... Optical cable

Claims (4)

  A switching device for a railway traffic signal relaying a control signal transmitted from a signal control device such as an electronic interlocking device to a traffic signal, wherein a multi-core cable that individually transmits the control signal to each light of the traffic signal can be connected. 1 connection means, second connection means capable of connecting a network cable that abstracts and multiplexes the control signals and transmits them, and is connected to the control signals to make the control signals individualized and specific and enable individual transmission A small control terminal, wherein the control signal is relayed by causing one of the first connection means and the second connection means to function by detaching the connector. A switching device for railway traffic signals.   The signal control system according to claim 1, wherein the control signal is individually transmitted to each lamp of the signal device via a multicore cable when the control signal is transmitted from the signal control device such as an electronic interlocking device to the signal device. A switching device for railway traffic signals is installed, and the first connection means is connected to the multi-core cable so that the first connection means functions, and the control signal is abstracted and multiplexed in the second connection means. A signal control system updating method comprising: connecting a network cable to be transmitted; and then suspending the function of the first connection means by detaching a connector and causing the second connection means to function.   The composite display control means for reflecting the control signal of any one of the traffic lights in the control signal of another light is provided in front of or inserted in the first connection means. 3. The signal control system updating method according to 2.   A fail-safe function is added to the composite display control means for turning off the other lamps when any one of the lights of the traffic light is to be displayed in combination. Item 4. The signal control system update method according to Item 3.

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