Isolating switch passive temperature measuring device

The invention discloses a passive temperature measuring device of an isolating switch in the technical field of intelligent operation inspection, and aims to solve the problems that a contact part of an outdoor isolating switch is easily influenced by rain and snow weather and a temperature measuring element is inconvenient to supply energy in the prior art. The device comprises a metal rain cover, an electric field energy taking module and a wireless temperature measuring module are arranged in the metal rain cover, and the electric field energy taking module is electrically connected with the wireless temperature measuring module; the metal rain cover can sense an electric field around the conducting rod to generate electric energy; the electric field energy taking module is used for obtaining and storing electric energy; the wireless temperature measuring module is used for acquiring electric energy from the electric field energy acquiring module, monitoring the temperature of the contact and wirelessly tr