JP2006093938A - Transmission switching device - Google Patents

Transmission switching device Download PDF

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Publication number
JP2006093938A
JP2006093938A JP2004274739A JP2004274739A JP2006093938A JP 2006093938 A JP2006093938 A JP 2006093938A JP 2004274739 A JP2004274739 A JP 2004274739A JP 2004274739 A JP2004274739 A JP 2004274739A JP 2006093938 A JP2006093938 A JP 2006093938A
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Japan
Prior art keywords
transmission
signal
control device
input
switching device
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JP2004274739A
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Japanese (ja)
Inventor
Junichi Inoue
純一 井上
Naoki Okuyama
直樹 奥山
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Toyo Electric Manufacturing Ltd
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Toyo Electric Manufacturing Ltd
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Priority to JP2004274739A priority Critical patent/JP2006093938A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To switch a system instantaneously without stopping a transmission even if a fault in transmission occurs in an operating system. <P>SOLUTION: Not only the doubling of a transmission system and the doubling of a controller but also the doubling of input/output device are performed. At all times, controllers of a standby system and an operating system are made to perform signal operations in the same way. The fault in the transmission is detected by performing a signal comparison at all times. The transmission system is switched instantaneously without stopping a device connected to the transmission system at the transmission fault occurring time of the operating system. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は２重化された伝送システム系統での伝送異常時系統を切替えるための伝送切替装置に関するものである。   The present invention relates to a transmission switching device for switching a transmission error system in a duplexed transmission system system.

従来は稼動系の制御装置内部の回路で伝送状態を監視しており、異常を検出した場合伝送を停止し、待機系に対し稼動命令を出力し、伝送系統を切替えていた。（例えば、特許文献１参照。）。
特許平０５−１８３５４２号 Conventionally, the transmission state is monitored by a circuit inside the operation system control device. When an abnormality is detected, the transmission is stopped, an operation command is output to the standby system, and the transmission system is switched. (For example, refer to Patent Document 1).
Japanese Patent No. 05-183542

制御装置では入力信号の状態による伝送系統の断線検知、および制御装置内の制御プログラム演算結果により異常検出しており、入出力装置の動作状態が正常であるか判断が難しかった。
また、稼動系から待機系へ系統を切替えるタイミングとしては、入出力装置に対して一旦伝送を停止し、待機系で演算を行ってから伝送を再開するため、伝送に接続された装置を一旦停止する必要があった。 In the control device, the disconnection of the transmission system is detected according to the state of the input signal, and the abnormality is detected by the control program calculation result in the control device, and it is difficult to determine whether the operation state of the input / output device is normal.
Also, when switching the system from the active system to the standby system, the transmission is temporarily stopped for the input / output device, and the device connected to the transmission is temporarily stopped to perform the transmission after the computation is performed in the standby system. There was a need to do.

伝送系統の２重化と制御装置の２重化だけでなく、入出力装置を２重化し、常時待機系の制御装置でも稼動系の制御装置と同様に信号演算処理を行わせる。   In addition to the duplex of the transmission system and the duplex of the control device, the input / output device is also duplexed, and the signal processing is performed in the always-on standby control device in the same manner as the active control device.

入出力装置については、入出力装置自体に異常が発生しても判断できるよう２重化にて構成する。   The input / output device is configured in a duplex manner so that it can be determined even if an abnormality occurs in the input / output device itself.

この系統切替装置により、２重化された伝送系統において待機系の制御装置にて入力信号をもとに常時演算行うことで、稼動系に伝送異常が発生した場合でも、伝送を停止することなく瞬時に系統を切替える事が可能となる。   With this system switching device, the standby control device always operates based on the input signal in the duplexed transmission system, so that even if a transmission abnormality occurs in the active system, transmission is not stopped. It is possible to switch the system instantly.

また、制御装置の異常や伝送系統の断線だけでなく、入出力装置の異常も検出することが可能となる。   In addition, it is possible to detect not only an abnormality of the control device and a disconnection of the transmission system, but also an abnormality of the input / output device.

図１の実施の形態において、伝送切替装置１内には伝送系統３１の伝送信号を検出する信号検出器１１Ａと伝送系統３２の伝送信号を検出する信号検出器１１Ｂ、信号比較器１２により構成される。   In the embodiment of FIG. 1, the transmission switching device 1 includes a signal detector 11 </ b> A that detects a transmission signal of the transmission system 31, a signal detector 11 </ b> B that detects a transmission signal of the transmission system 32, and a signal comparator 12. The

図２のシステム構成において、伝送系統３１に制御装置２１が接続される。伝送系統３２には制御装置２２が接続され、各々の伝送系統は入出力装置４１と４２へ接続されている。   In the system configuration of FIG. 2, a control device 21 is connected to the transmission system 31. A control device 22 is connected to the transmission system 32, and each transmission system is connected to input / output devices 41 and 42.

入出力装置４１、４２は伝送系統３１および伝送系統３２とシリアル接続されており、稼動系の制御装置２１に対しては入出力信号を伝送し、待機系の制御装置２２に対しては入力信号を伝送している。   The input / output devices 41 and 42 are serially connected to the transmission system 31 and the transmission system 32, transmit input / output signals to the active control device 21, and input signals to the standby control device 22. Is transmitting.

送切替装置１内の信号比較器１２では、信号検出器１１Ａ、１１Ｂにより検出された検出信号１３Ａ、１３Ｂが入力され、常時２系統の検出信号比較を行い伝送状態の監視を行う。検出信号１３Ａ、１３Ｂを比較した結果、伝送系統３１で異常が検出された場合には信号比較器１２から信号検出器１１Ａへ系統切離すための異常信号１２Ｆを出力し、信号比較器１１Ａ内で伝送系統３１を切断することで制御装置２１を伝送系統３１から切離す。   The signal comparator 12 in the transmission switching device 1 receives the detection signals 13A and 13B detected by the signal detectors 11A and 11B, and constantly compares the detection signals of two systems to monitor the transmission state. When an abnormality is detected in the transmission system 31 as a result of comparing the detection signals 13A and 13B, an abnormality signal 12F for disconnecting the system from the signal comparator 12 to the signal detector 11A is output, and the signal comparator 11A The control device 21 is disconnected from the transmission system 31 by disconnecting the transmission system 31.

稼動系の制御装置２１に伝送系統３１の異常信号１２Ｆが入力されると伝送信号に異常があると判断し制御装置２１の出力を停止する。待機系の制御装置２２に伝送系統の異常信号１２Ｆが入力されると、常時制御装置２２内で入力信号により演算されていた信号を出力し、稼動系統への切替を行う。系統切替時の一連の動作時間については接続装置に影響がでないように瞬時に行うものとする。   When the abnormal signal 12F of the transmission system 31 is input to the active control device 21, it is determined that the transmission signal is abnormal, and the output of the control device 21 is stopped. When the transmission system abnormality signal 12F is input to the standby control device 22, the signal calculated by the input signal in the control device 22 is always output, and the operation system is switched. A series of operation times at the time of system switching shall be instantaneous so as not to affect the connection device.

本発明により、稼動系の伝送異常が発生した場合でも、伝送を停止せずに、瞬時に系統切替ができるので、信頼性の高い伝送システムが構築できる。   According to the present invention, even when a transmission abnormality occurs in the operating system, the system can be switched instantaneously without stopping the transmission, so that a highly reliable transmission system can be constructed.

車両案内装置Vehicle guidance device システム構成System configuration

符号の説明Explanation of symbols

１ 伝送切替装置
１１Ａ、１１Ｂ 信号検出器
１２ 信号比較器
１２Ｆ 異常信号
１３Ａ、１３Ｂ 検出信号
２１、２２ 制御装置
３１、３２ 伝送系統
４１、４２ 入出力装置 DESCRIPTION OF SYMBOLS 1 Transmission switching device 11A, 11B Signal detector 12 Signal comparator 12F Abnormal signal 13A, 13B Detection signal 21, 22 Control device 31, 32 Transmission system 41, 42 Input / output device

Claims (2)

２重化された伝送経路と２重化されたIO装置をもつ伝送装置において、稼動系で検出された信号と待機系で検出された信号を比較し、伝送異常を判断する事を特徴とした伝送切替装置。   In a transmission device with a duplexed transmission path and a duplexed IO device, the signal detected in the active system is compared with the signal detected in the standby system, and transmission abnormality is judged. Transmission switching device. 請求項１の伝送切替装置において、異常が発生した系統に対して伝送切替装置より稼動系の制御装置へ異常信号を出力し系統を遮断すると同時に待機系の制御装置へ稼動命令を出力し、伝送を停止することなく瞬時に系統を切替えることを特徴とした伝送切替装置。
2. The transmission switching device according to claim 1, wherein an abnormal signal is output from the transmission switching device to the active control device for the system in which an abnormality has occurred to shut off the system and simultaneously output an operation command to the standby control device for transmission. A transmission switching device characterized in that the system is switched instantaneously without stopping the operation.
JP2004274739A 2004-09-22 2004-09-22 Transmission switching device Pending JP2006093938A (en)

Priority Applications (1)

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JP2004274739A JP2006093938A (en) 2004-09-22 2004-09-22 Transmission switching device

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0936826A (en) * 1994-07-18 1997-02-07 Nippon Telegr & Teleph Corp <Ntt> No-hit switching device of transmission line and method therefor
JPH1115502A (en) * 1997-06-24 1999-01-22 Mitsubishi Electric Corp Digital controller
JP2000347960A (en) * 1999-06-03 2000-12-15 Mitsubishi Electric Corp Digital controller
JP2002077311A (en) * 2000-08-31 2002-03-15 Fujitsu Denso Ltd Method and apparatus for system change-over based on fault level of duplex apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0936826A (en) * 1994-07-18 1997-02-07 Nippon Telegr & Teleph Corp <Ntt> No-hit switching device of transmission line and method therefor
JPH1115502A (en) * 1997-06-24 1999-01-22 Mitsubishi Electric Corp Digital controller
JP2000347960A (en) * 1999-06-03 2000-12-15 Mitsubishi Electric Corp Digital controller
JP2002077311A (en) * 2000-08-31 2002-03-15 Fujitsu Denso Ltd Method and apparatus for system change-over based on fault level of duplex apparatus

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