Intelligent temperature measurement nut device based on electric field energy extraction

During the long-term operation of transmission lines, the contact resistance increases due to insufficient crimping force, poor contact, and oxidation and corrosion of the contact surface at the connection points of wires such as clamps, which in turn leads to heating problems during operation. Heating in transmission lines usually occurs at the clamping position of the line. By monitoring the clamping status of the prone hot wire line, accidents such as wire breakage caused by heating defects can be effectively avoided. At present, the use of infrared monitoring and other heating defect monitoring methods for transmission lines has problems such as low efficiency and inability to monitor the heating status in real time; In addition, currently, online monitoring temperature sensors for transmission line clamps are generally powered by batteries, which poses problems such as difficulty in later operation and maintenance, and complex installation methods. Based on this, this article conducts research on intelligent temperature measurement screw cap technology, develops a passive wireless temperature measurement sensor module based on micro energy harvesting technology and Internet of Things communication technology, integrates the mechanical and electrical integration design of the sensing key module and screw cap structure, develops an intelligent screw cap with passive wireless temperature measurement function that can be quickly installed, realizes real-time monitoring and warning of temperature anomalies, effectively reduces the workload of maintenance personnel, and reduces direct economic losses caused by equipment safety accidents.