Two-machine hot standby switching circuit

A switching circuit, dual-machine hot backup technology, applied in the direction of logic circuit connection/interface layout, logic circuit coupling/interface using field effect transistors, etc. and other problems, to achieve the effect of simple circuit, manual switching and reliability improvement.

Active Publication Date: 2015-04-01
苏州富欣智能交通控制有限公司
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

The dual-system hot-standby system needs to use a dual-machine hot-standby switching circuit to realize the switch between the main system and the backup system. The existing dual-machine hot-standby switching circuits have the following defects and limitations: multiple relays are required, and the circuit is complicated; There is an uncertain state when manually operating the toggle switch

Method used

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  • Two-machine hot standby switching circuit
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  • Two-machine hot standby switching circuit

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Embodiment Construction

[0033] Such as figure 1 Shown is a schematic structural diagram of an isolation circuit 101 according to an embodiment of the present invention; figure 2 Shown is a schematic structural diagram of a switching interlock circuit 102 according to an embodiment of the present invention; image 3 Shown are schematic diagrams of three switching states of the manual switching lock 103 according to the embodiment of the present invention; Figure 4 As shown, it is a schematic diagram of the structure of the main / standby indicating circuit 104 of the embodiment of the present invention. The dual-system hot-standby switching circuit of the embodiment of the present invention includes a dual-system hot-standby system including A series and B-series that are mutually hot backup. The dual-system hot backup switching circuit is used to switch the states of the A-series and B-series main and standby machines, The dual-system hot standby switching circuit includes: an isolation circuit 101, a ...

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Abstract

The invention discloses a two-machine hot standby switching circuit. The two-machine hot standby switching circuit comprises an isolating circuit, a switching interlocking circuit and an active / standby indicating circuit, wherein the switching interlocking circuit comprises two relays, each relay comprises three contact switches, one of the three switches is normally closed and the other two of the three switches are normally open. Isolated system A active striving signals are connected to a first end of a coil of a system A relay through the normally closed switch of a system B relay, and a second end of the coil of the system A relay is connected with a system A control power supply; isolated system B active striving signals are connected to a first end of a coil of the system B relay through the normally closed switch of the system A relay, and the second end of the coil of the system B relay is connected with a system B control power supply; system A active / standby indicating signals are output to a system A and a system B and system B active / standby indicating signals are output to the system A and the system B through the normally open switches of the system A and the system relays. The two-machine hot standby switching circuit has the advantages that the circuit is simple, the quantity of the used relays is small and the cost is low; the circuit reliability is high and the isolation of the two systems is realized.

Description

Technical field [0001] The invention relates to a dual-system hot backup system, in particular to a dual-system hot backup switching circuit. Background technique [0002] Nowadays, electronic product systems are developing rapidly. In some occasions with high reliability requirements, dual-system hot standby, three out of two, two out of two out of two system modes are used to improve the reliability of the product system. Once the system has problems, The system can return to normal by itself, and the maintenance personnel are prompted to repair it. The dual-system hot-standby system needs to use a dual-system hot-standby switching circuit to switch between the main system and the standby system. The existing dual-system hot-standby switching circuit has the following defects and limitations: multiple relays are required and the circuit is complicated; There is an uncertain state when manually operating the switch. Summary of the invention [0003] The technical problem to be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K19/0185
Inventor 倪凯健杨朝霞
Owner 苏州富欣智能交通控制有限公司
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