Patent ID: 7884618
Filing Date: 2011-02-08
Classification: G01R

Abstract:
1. A testing method for electricity safety applied for measuring an impedance of a household electricity wire, the testing method comprising: step 1: inserting a testing system into a socket of the household electricity wire, wherein the testing system comprises a signal capturing unit, a first amplifier and rectifier unit, a second amplifier and rectifier unit, and a processing unit, the signal capturing unit being connected between the first amplifier and rectifier unit and the second amplifier and rectifier unit, the processing unit being connected to the first amplifier and rectifier unit and to the second amplifier and rectifier unit; step 2: measuring a first voltage wave of the household electricity wire by the first amplifier and rectifier unit when no load is applied; step 3: capturing a current signal by the signal capturing unit; step 4: transforming the current signal to a voltage signal by a micro-resistor and transforming the voltage signal to a second voltage wave by the second amplifier and rectifier unit; and step 5: comparing the first voltage wave to the second-voltage wave and outputting the comparison result through the processing unit.