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Detection circuit for leakage fault and detection method thereof

A detection circuit and fault detection technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve problems such as inability to use normal functions of equipment, high faults reported by household equipment, and affect user experience, so as to improve the safety of use and Reliability, improving user experience, and the effect of reassuring product functions

Inactive Publication Date: 2019-07-26
NINGBO FOTILE KITCHEN WARE CO LTD
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Problems solved by technology

[0003] However, in real life, due to the uneven quality of power grids in various regions, coupled with the fact that there will be ripples in the leakage pulse itself and occasional fluctuations in the quality of the power grid, the interference caused by these power grid fluctuations and ripples makes the use of existing leakage detection methods It is easy to generate false alarms, which directly lead to problems such as high failure rate of household equipment or inability to use normal functions of the equipment, which seriously affects the user experience

Method used

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  • Detection circuit for leakage fault and detection method thereof
  • Detection circuit for leakage fault and detection method thereof
  • Detection circuit for leakage fault and detection method thereof

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Embodiment Construction

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0034] Such as Figure 1~2 As shown, the present embodiment relates to a leakage fault detection circuit, the detection circuit includes a signal acquisition module 1, a signal receiving module 2, a main control module MCU and an alarm module 3, and the signal acquisition module 1 includes a ground wire that can be connected respectively G and the two input ends of the neutral line N, the first output end of the signal acquisition module 1 is connected to the first input end 21 of the signal receiving module 2, the second output end of the signal acquisition module 1 is connected to the first input end 21 of the signal receiving module 2 The two input terminals 22 are connected, the output terminal of the signal receiving module 2 is connected to the signal receiving terminal INTP of the main control module MCU, and the signal transmitting ter...

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Abstract

A detection circuit for leakage fault is characterized in that the detection circuit comprises a signal acquisition module, a signal receiving module, a master module and an alarm module. The signal acquisition module comprises two input ends that are connected to a ground wire and a neutral wire respectively. The first output end of the signal acquisition module is connected with the first inputend of the signal receiving module, the second output end of the signal acquisition module is connected with the second input end of the signal receiving module, the output end of the signal receivingmodule is connected with the signal receiving end of the master module and the signal transmitting end of the master module is connected with the alarm module.

Description

technical field [0001] The invention relates to a leakage fault detection circuit and a detection method thereof. Background technique [0002] With the development of modern technology, many home appliances will have a leakage detection module inside, that is, to judge whether there is a leakage by detecting whether there is current in the ground wire or the neutral wire, the purpose is to prevent the household equipment from being used improperly as the usage time increases. Or the leakage phenomenon caused by the aging of the line and the damage of the strong electric connecting line, etc., in order to improve the safety factor of the equipment. [0003] However, in real life, due to the uneven quality of power grids in various regions, and the leakage pulse itself will have ripples and occasional power grid quality fluctuations, the interference caused by these power grid fluctuations and ripples makes the use of existing leakage detection methods It is easy to generate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/02
CPCG01R31/50
Inventor 胡锴锴
Owner NINGBO FOTILE KITCHEN WARE CO LTD
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