JP4772013B2 - Field equipment of network system linkage system - Google Patents

Description

The present invention relates to on- site equipment of a network-type interlocking system, and particularly to shortening of switching time when an existing interlocking system is switched to a network-type interlocking system.

  In the field of railways, in order to operate trains safely and efficiently, interlocking devices that use a certain order and restrictions on the handling of traffic lights and switchboards are used. Patent Document 1 discloses a network-type interlocking system that uses this interlocking device to simplify the work of updating or newly installing field equipment such as traffic lights and switchboards.

  A network system interlocking system disclosed in Patent Document 1 includes a interlocking logic device that creates control information for railway signal field devices such as traffic lights and switchboards, and a plurality of interlocking logic devices connected to the interlocking logic device via a communication line. A plurality of on-site control terminals that perform control output on the railway signal on-site equipment. And the equipment data group for a plurality of field devices, for example, the type data of each switch and traffic light and each switch, etc. are connected to the control information transmitted from the interlocking logic unit to the plurality of field control terminals. It is necessary to include the number data etc. of the field control terminals that are currently in use, and it is not necessary to have the equipment data group related to each switch machine etc. in the plurality of field control terminals. Data is shared.

  When updating or newly installing on-site equipment with this network-linked system, simply set up the equipment data group of the interlocking logic device and the number data of the on-site control terminal, and update and install work, simplifying the update work, etc. I have to.

  In order to replace this network-linked system with an existing linked system, it is necessary to perform a confirmation test of the network-linked system. When performing a verification test of this network system interlocking system, the connection between the existing interlocking system to be updated and the new network system interlocking system is switched.

As a method of switching the connection between the existing interlocking system and the new network system interlocking system, as shown in Patent Document 2, a method of switching by providing a switching relay device in an equipment room is disclosed. As shown in FIG. 3, the switching relay device is switched to provide a switching relay device 23 having a number of changeover switches 21 and connectors 22, and the existing interlocking system 24, the field device 25, and the new interlocking system 26 are cabled. And switching the connection of the existing interlocking system 24 and the new interlocking system 26 to the field device 25 by operating the selector switch 21 of the switching relay device 23, and the operation test of the existing interlocking system 24 and the interlocking after the update. An operation test of the system 26 is performed to shorten the test time.
JP 2004-175182 A JP 2005-212532 A

  As described above, the switching method using the switching relay device can test by switching the existing interlocking system and the new interlocking system in a short time, and the test time can be shortened. The switching relay device needs to be removed after switching the interlocking system to a new interlocking system, resulting in a high cost. There is also a problem that it is necessary to secure a place for installing the switching relay device.

The present invention provides an on-site device for a network-type interlocking system that improves such disadvantages and can be stably switched in a short time with a simple configuration when an existing interlocking system is updated to a new interlocking system. It is intended to do.

The field device of the network system interlocking system of the present invention includes a system input / output interface that exchanges control / display information with a newly established network system interlocking system, and control / display conditions between the system input / output interface and the field device driving unit. A field control terminal having a device input / output interface for transmitting and receiving and a field device including the field device drive unit, wherein the field control terminal is controlled by system switching control data output from the network system interlocking system At the same time, there is a failure detection relay in which the coil is de-energized when a failure occurs in the local site control terminal. The existing linkage system and the current Connecting the device driver, when the network system coil operation contacts is energized in the failure detection relay by the system switching control data output from the interlock system is closed, the field apparatus driving said device output interface In this state, when a failure occurs in the local control terminal and the coil of the failure detection relay is de-energized and the recovery contact is closed, the device input / output interface, the field device drive unit, The connection is cut off.

In this invention, the field device of the newly established network system interlocking system has a built-in field control terminal and a field device drive unit, and the field control terminal detects failure in its own field control terminal by the system switching control data output from the network system interlocking system. When the relay coil is de-energized and the recovery contact is closed, the fault detection relay coil is excited by the system switching control data that is output from the network system interlocking system by connecting the existing interlocking system and the field device drive unit. When the operating contact is closed, the network system interlocking system and the field device drive unit are connected, and the existing interlocking system and the newly established network system interlocking system are switched to establish a new networking system. Switching the interlocking system stably in a short time The improper connection with wear occurs can be prevented.

  Further, when installing a new interlocking system, it is not necessary to install a switching relay device, so it is not necessary to secure an extra installation space, and the existing interlocking system can be easily updated. Furthermore, when the existing interlocking system is removed, it is only necessary to remove the connection with the field device, so that the existing interlocking system can be easily removed.

  FIG. 1 is a block diagram showing the configuration of the field control terminal of the present invention. As shown in the figure, the site control terminal 1 includes a system input / output interface 2, a device input / output interface 3, a processing unit 4, and a failure detection relay R. The system input / output interface 2 exchanges control information and display information with, for example, a new electronic interlocking system 5. The device input / output interface 3 exchanges control conditions and display conditions with the field device drive unit 7 that drives the control object 61 and the display object 62 of the field device 6. The processing unit 4 is turned on to select the interlocking system 5 to be newly established by the system changeover switch 8, and when power is supplied from the power supply 9 for the on-site control terminal, between the system input / output interface 2 and the device input / output interface 3. The operation is performed and the coil of the failure detection relay R is excited. When the coil is de-energized and the recovery contact is closed, the failure detection relay R connects the existing interlocking system 10 and the on-site equipment drive unit 7, and when the coil is excited and the operating contact is closed, The input / output interface 3 and the field device drive unit 7 are connected.

  A switching method when the existing interlocking system 10 is replaced with the newly interlocking system 5 by the site control terminal 1 will be described.

  An interlocking system 5 newly installed in the system input / output interface 2 of the field control terminal 1 arranged at a predetermined position is connected by, for example, a transmission cable 11, and is connected to the device input / output interface 3 through an operation contact of the contact R 1 of the failure detection relay R. The control condition line of the field device drive unit 7 is connected, and the display condition line of the field device drive unit 7 is connected to the device input / output interface 3. In addition, a recovery contact of the contact point R1 of the failure detection relay R is provided in the control condition line of the existing interlocking system 10 and the field device driving unit 7 connected by the multicore cable 12, and the existing interlocking system 10 and the field device driving are provided. The control condition line of the unit 7 is connected via the recovery contact of the failure detection relay R. Next, the power supply terminal of the on-site control terminal 1 and the on-site terminal power supply 9 are connected via the system changeover switch 8.

  In this state, when the system changeover switch 8 is turned off and the existing interlocking system 10 is selected, power is not supplied from the field control terminal power supply 9 to the field control terminal 1, and the coil of the failure detection relay R is de-energized, The recovery contact of the contact R1 of the failure detection relay R is closed, and the existing interlocking system 10 and the field device drive unit 7 are connected. Therefore, the operation of the existing interlocking system 10 before the update is performed to confirm the operation.

  Thereafter, when the system changeover switch 8 is turned on to select a new interlocking system 5, power is supplied from the field control terminal power supply 9 to the field control terminal 1, and the processing unit 4 excites the coil of the failure detection relay R. When the coil of the failure detection relay R is excited, the operation contact of the contact R1 is closed, and the device input / output interface 3 and the field device drive unit 7 are connected. When the new interlocking system 7 is operated in this state, the processing unit 4 performs a process of transferring control information and display information between the system input / output interface 2 and the device input / output interface 3.

  In this way, the system changeover switch 10 is switched to control the power supplied to the field control terminal 1 to switch between the de-excitation and excitation of the coil of the failure detection relay R, and the control information of the existing linkage system 10 and the newly established linkage system 5 By switching, the existing interlocking system 10 and the new interlocking system 5 can be stably switched in a short time. In addition, when installing the new interlocking system 5, for example, it is not necessary to install a switching relay device having a plurality of changeover switches, so there is no need to secure an extra installation space, and the existing interlocking system 10 can be easily updated. It can be carried out. Furthermore, when the existing interlocking system 10 is removed, it is only necessary to remove the multi-core cable 12, so that the existing interlocking system 10 can be easily removed.

  When the control information is output from the new interlocking system 5 after the existing interlocking system 10 is removed, if a failure occurs in the new interlocking system 5 or the on-site control terminal 1, the coil of the fault detection relay R is not excited. Thus, since the control information for the field device driving unit 7 is blocked, it is possible to prevent the field device 6 from malfunctioning.

  In the above description, for example, the case where the electronic interlocking system 5 is replaced with the existing interlocking system 10 has been described. However, when the network-based interlocking system is replaced with the existing interlocking system 10, the switching can be performed in the same manner.

  As shown in the block diagram of FIG. 2, the field device 14 of the network-type interlocking system 13 incorporates the field device drive unit 7 and the field control terminal 1 together with the control object 61 and the display object 62. The control condition line of the field device drive unit 7 is connected to the device input / output interface 3 of the field control terminal 1 via the operation contact of the contact R1 of the failure detection relay R, and via the recovery contact of the contact R1 of the failure detection relay R. Are connected to the existing control condition input terminal 15. Further, the display condition line of the field device drive unit 7 is connected to the device input / output interface 3 and the existing display condition output terminal 16 of the field control terminal 1.

  A network-type interlocking system 13 is connected to the control information input terminal 17 and the display information output terminal 18 of the field device 14 via a network 19, and the existing interlocking system 10 is connected to the existing control condition input terminal 15 and the existing display condition output terminal 16. Connect with multi-core cable 12. Then, a power supply 9 for the on-site control terminal is connected to the power supply terminal 20 of the on-site equipment 14 via the system changeover switch 8. The connection between the existing interlocking system 10 and the network-type interlocking system 13 can be easily switched by switching the connection between the existing interlocking system 10 and the network-based interlocking system 13 by turning the system changeover switch 8 on and off. it can.

  In the above description, the case where the electric power supplied to the on-site control terminal 1 is controlled by the system changeover switch 8 and the coil of the failure detection relay R is switched between the non-excitation and the excitation is described. However, the electric power supplied to the on-site control terminal 1 is not controlled. Thus, system switching control data may be provided in the control information output from the network-type interlocking system 13, and the operation of the failure detection relay R of the site control terminal 1 may be controlled based on this system control data.

It is a block diagram which shows the structure of the field control terminal of this invention. It is a block diagram which shows the structure of the field equipment of this invention. It is a block diagram which shows the method of providing and switching the conventional switching relay apparatus.

Explanation of symbols

1; Site control terminal, 2; System input / output interface,
3; device input / output interface; 4; processing unit; 5;
6; field device, 7; field device drive unit, 8; system changeover switch,
9: Power supply for on-site control terminal, 10: Existing interlocking system,
13: Network-type interlocking system, 14: Field equipment.

Claims (1)

Field control having a newly established network system interlocking system, a system input / output interface for transmitting / receiving control / display information, and a device input / output interface for transmitting / receiving control / display conditions between the system input / output interface and the field device drive unit A field device including a terminal and the field device drive unit,
The field control terminal includes a failure detection relay that is controlled by system switching control data output from the network system interlocking system and that causes a coil to be de-energized when a failure occurs in the local field control terminal. When the coil of the failure detection relay is de-energized and the recovery contact is closed by the system switching control data output from , the existing interlocking system and the field device drive unit are connected and output from the network interlocking system When the coil of the failure detection relay is excited by system switching control data and the operation contact is closed, the device input / output interface and the field device drive unit are connected, and in this state, a failure occurs in the own field control terminal. Occurs, the failure detection relay coil is de-energized and the recovery contact is closed. When the field device of the network system interlock system characterized by interrupting the connection between the said device output interface field device driver.

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