Radio frequency identification（ RFID） sensing-tag is a novel technology for electrical equipment wireless monitoring fused with identification and sensing function

and high efficient anti-collision algorithm is the main way to improve the real time performance of electrical equipment state wireless monitoring system based on RFID sensing-tag technology. Based on improved adaptive multi-tree search（ IAMS） anti-collision algorithm

collision sensing-tag number are calculated by collision probability model

the specific slot principle of priority application and priority allocation is established

and an improved adaptive timeslot and multi-tree search anticollision（ IATMSA） algorithm is proposed. Algorithm simulation result indicates that total timeslot numbers of IATMSA is less

identification speed is faster and throughput is higher are better than IAMS and quadtree search algorithms.