NON-CONTACT CURRENT AND TEMPERATURE DETECTING DEVICE FOR POWER LINE

摘要

PURPOSE: A non-contact current and temperature detecting device is provided to measure a current and a temperature of a power line by using simple structure and a non-contact method and by maintaining linearity without an additional compensating circuit. CONSTITUTION: A non-contact current and temperature detecting device comprises: a hall element(42); a temperature sensor(46); and a detecting signal processing unit(40) including a static current/voltage source(41), a first and a second differential amplifiers(43,47), a band pass filter(44), a signal converting unit(45), and an output amplifying unit(48). Herein, the occurrence of an error is minimized with the improvement of non-linearity. According to an easy non-contact method, the fluctuations of temperatures and currents in a measuring spot are simultaneously detected.