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DC switch protective circuit switching detection device and method

A technology for protecting circuits and DC switches, used in measuring devices, fuse testing, measuring electricity, etc., can solve the problems of low reliability and undetectable on-off state detection, and achieve improved real-time and reliability, high detection speed. Effect

Active Publication Date: 2008-09-17
ZTE CORP
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AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide an on-off detection device and method for a DC switch protection circuit, which is used to overcome the on-off of DC switch protection circuits such as battery fuses, load circuit breakers, and air switches in existing communication power supply systems. Problems with low or undetectable state detection reliability

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  • DC switch protective circuit switching detection device and method
  • DC switch protective circuit switching detection device and method
  • DC switch protective circuit switching detection device and method

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Embodiment Construction

[0032] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0033] In order to detect the on-off status of DC switch protection circuits such as battery fuses, load circuit breakers, and air switches, the present invention can adopt the following method: input a preset signal wave at the input end of the DC switch protection circuit; then detect the DC switch protection Whether there is this signal wave at the output end of the circuit; if there is no such signal wave, it is determined that the DC switch protection circuit is disconnected, otherwise it means that the DC switch protection circuit is turned on. Based on this detection idea, as figure 1 As shown, the present invention provides an on-off detection device for a DC switch protection circuit. The device can be used to detect the on-off state of the DC switch protection circuit 100 installed in the power supply system. It mainly includes: a ...

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Abstract

The invention discloses a device for detecting the on-off state of the direct current switch protective circuit and method thereof, comprising: a signal generator and a signal comparison circuit, wherein the output end of the signal generator is connected with the output end of the direct current switch protective circuit and one output end of the signal comparison circuit. The signal generator is used for generating a preset signal wave and transmitting the preset signal wave into the direct current switch protective circuit and the signal comparison circuit. Another input end of the signal comparison circuit is connected with the output end of the direct current switch protective circuit and outputs the detection signal. The said device can detect the on-off state of the direct current switch protective circuit as true as steel, such as cell fuse, load breaker, nonempty open; and the speed of testing is high and the real time and reliability of the power supply monitoring can be greatly increased.

Description

technical field [0001] The invention relates to an on-off detection technology for a DC switch protection circuit of a communication power supply, in particular to an on-off detection method and device for a DC switch protection circuit. Background technique [0002] The backup battery is an important guarantee for the uninterrupted power supply of the communication network, the power supply guarantee for the entire communication power supply equipment, and the last line of defense to ensure the normal operation of the communication network. Most of the telecommunications users in our country are equipped with backup batteries to ensure that the communication equipment can work uninterruptedly in the case of abnormal mains power. The backup battery needs to be properly maintained and managed reasonably and reliably in order to ensure a long service life of the battery. [0003] When the battery is used in a communication power supply, it is usually necessary to connect a ba...

Claims

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Application Information

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IPC IPC(8): G01R31/02G01R31/07G01R31/74
Inventor 熊勇
Owner ZTE CORP
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