Electricity safety inspection system and method thereof
A safe and home-use technology, applied in the direction of measuring electrical variables, measuring resistance/reactance/impedance, measuring devices, etc., can solve problems such as wiring crises that cannot be predicted in advance, and achieve the effect of avoiding electricity safety
Inactive Publication Date: 2009-08-26
POWERTECH INDAL
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[0005] However, the devices for protecting the circuit all belong to passive safety devices, that is to say, the above-mentioned devices will only function negatively at the critical point where a hazardous event occurs; To put it bluntly, the device is a way to treat the symptoms rather than the root cause, and it is still impossible to predict in advance whether there is a potential crisis in this wiring
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[0035] See figure 1 The present invention provides an electrical safety detection system 1, which can be used to detect the impedance of household wiring to show the advantages and disadvantages of the household wiring. The electrical safety detection system 1 has a plug to provide the household equipment. Line of a mains socket 100. The electrical safety detection system 1 includes: a first amplifying and rectifying circuit unit 11 for measuring a first voltage waveform a of the household wiring under no load; a signal capturing unit 12 , Which includes: a switching element (MOSFET, IGBT, drive switch, etc.) unit U1 and a first predetermined resistor R1; a second amplifying and rectifying circuit unit 13, which is coupled to the signal capturing unit 12, wherein the The second amplifying and rectifying circuit unit 13 is used to convert the tiny voltage waveform into a second voltage waveform b; and a processor unit 14 is used to compare the first voltage waveform a with the sec...
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The invention relates to an electricity safety inspection system, which is characterized by comprising the following steps: inserting the electricity safety inspection system in a commercial power socket of household wires; measuring the first voltage waveform of the household wires under the condition of no load by a first amplifying and rectifying circuit unit; starting a preset instant periodic current signal by a signal seizing unit through a drive circuit; converting an instant load current signal into the second voltage waveform by a second amplifying and rectifying circuit unit; and comparing the first voltage waveform with the second voltage waveform to obtain a comparison result by a processor unit, so the quality of the household wires can be displayed by an resistance value to further improve the safety of household electricity.
Description
Technical field [0001] The invention relates to a system and method for detecting and detecting electrical safety, in particular to a detecting system and method that can actively measure the quality of household wiring. Background technique [0002] For modern people, "electricity" has become a part of ordinary life, and electricity is indeed an indispensable power source for modern life. The contribution of electricity to our lives is unquestionable, but improper use of electricity will not only cause inconvenience, cause disasters, and even be fatal. [0003] The so-called "overload" and "short circuit" phenomena often result in dangerous incidents of electricity consumption. Generally speaking, the current flowing through the wire has its safety capacity limit. For example, if the specification of the extension cord is marked "125V, 15A", it means that the maximum power supply voltage that can be connected is 125V, and the maximum safe total current that can be withstood is 1...
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IPC IPC(8): G01R31/08G01R27/02
Inventor 李裕隆
Owner POWERTECH INDAL