Non-contact cable voltage measuring device, method, computer equipment and system

• Main Authors: AO GANG, ZHANG WENBIN, QIAN GUOCHAO, ZHOU NIANRONG, TANG JIE, WANG DADA, TAN XIANGYU
• Format: Patent
• Language: Chinese; English
• Published: 25.04.2023
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The embodiment of the invention discloses a non-contact cable voltage measuring device, method, computer equipment and system. The method comprises the following steps: when a to-be-detected cable is not arranged in a capacitance probe, controlling a voltage signal generator to apply an excitation signal so as to obtain a reference signal; when a to-be-detected cable is arranged in the capacitance probe, acquiring displacement current output by the to-be-detected cable; coupling the reference signal and the displacement current to obtain a coupling voltage signal; and obtaining the to-be-measured voltage of the to-be-measured cable according to the reference signal, the coupling voltage signal and the displacement current. Therefore, the reference signal can be obtained when the device is no-load (that is, the to-be-tested cable is not arranged), the coupling voltage signal is obtained after the to-be-tested cable is arranged, and the voltage of the to-be-tested cable is determined through the reference signa