Mains supply interruption detection device

• Main Author: YUAN SANNAN
• Format: Patent
• Language: Chinese; English
• Published: 27.11.2018
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention relates to a mains supply interruption detection device, which is characterized in that an induction antenna serves as an inductor in an LC electromagnetic detection module, the induction antenna is installed close to a detected three-phase AC cable, a detected electric field signal is transmitted to a signal processing and amplification module for amplification, the amplified signalis transmitted to a comparison and judgment module, compared with a set threshold and then transmitted to an emitter follower shaping output module, and the emitter follower shaping output module outputs a judgment signal. The mains supply interruption detection device detects whether there is an AC electric field or not through sensing the change of the electric field so as to judge whether there is mains supply or not; the mains supply interruption detection device adopts a non-contact induction mode, is simple and easy to install, safe and reliable and avoids safety risks and electric shock accidents possibly caus