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Short circuit and leakage detection device and detection method thereof

A leakage detection and resistance technology, applied in measuring devices, measuring electricity, measuring electrical variables, etc., can solve problems such as equipment danger, and achieve the effect of avoiding short circuits and ensuring safety.

Active Publication Date: 2017-03-22
CHENGDU UNIV OF INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] There is no pre-use detection step for existing electronic or electrical equipment, and in many cases, if the equipment has a short circuit or leakage, the equipment will be turned on directly It is dangerous to use

Method used

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  • Short circuit and leakage detection device and detection method thereof

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Embodiment Construction

[0025] The serial numbers of the following components correspond to the Arabic numerals in the drawings. For example, the first resistor corresponds to R1, the first operational amplifier corresponds to A1, and the first field effect transistor corresponds to Q1.

[0026] Such as figure 1 As shown, the circuit of the present invention includes a constant current sub-circuit, a prompt sub-circuit, and a power switching sub-circuit.

[0027] The constant current sub-circuit includes a first resistor, a second adjustable resistor, a first operational amplifier, a first field effect transistor and a fourth non-polar capacitor. The connection relationship of each component is as follows: one end of the first resistor is connected to the high potential terminal (VCC) of the auxiliary power supply, the other end is connected to a fixed end of the second adjustable resistor, the other fixed end of the second precision resistor is connected to the ground, and the adjustable end of the...

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Abstract

The invention discloses a short circuit and leakage detection device and a detection method thereof. The short circuit and leakage detection device comprises a constant current sub-circuit, a prompting sub-circuit, a power switching sub-circuit, a first electromagnetic relay, a second electromagnetic relay, a third electromagnetic relay and a fourth electromagnetic relay. The short circuit and leakage detection device and the detection method thereof can be applied to the detection of equipment before power supply, can detect short circuit and leakage situations of the equipment timely, prompt the situations immediately without supplying power to the equipment, carry out detection again after troubleshooting, start the equipment only after passing the detection, can effectively protect the equipment, avoid the occurrence of the short circuit and leakage situations caused by negligence, and guarantee the safety of staff and the safe operation of the equipment.

Description

technical field [0001] The invention belongs to the technical field of electronic circuits, and in particular relates to a short circuit and electric leakage detection device and a detection method thereof. Background technique [0002] Existing electronic equipment or electrical equipment does not have a pre-use detection step during use, and in many cases, if the equipment has a short circuit or leakage, it will be very dangerous to directly open the equipment for use. [0003] If a detection circuit can be provided, the detection circuit will perform short circuit or leakage detection before supplying power to the equipment. Only when the equipment can be started, the equipment can be well protected to avoid short circuit and leakage caused by negligence. Contents of the invention [0004] In order to solve the above problems, the present invention provides a short circuit and electric leakage detection device and a detection method thereof. The device includes a cons...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/02
CPCG01R31/50
Inventor 王海时李珂李英祥刘军珂王晓航李艾伟文奥谷少伟
Owner CHENGDU UNIV OF INFORMATION TECH