Strain triggering high-altitude protection automatic control system

The invention provides a strain triggering high-altitude protection automatic control system. The system comprises a strain sensor arranged on a metal buckle, an amplification circuit, an analog to digital conversion circuit, a one-chip microcomputer and an execution part. The strain sensor converts strain quantity of the metal buckle into an electric signal. The electric signal is amplified through the amplification circuit, and a signal which can be recognized by the one-chip microcomputer is converted by the analog to digital conversion circuit and is provided to the one-chip microcomputer. The one-chip microcomputer is used for comparison of the received signal with the threshold, and when the received signal is less than the threshold, an instruction is given to start the execution part. The execution part is a safety protection device. The metal buckle is a connection buckle between a high-altitude worker and a safety rope. Deformation of the metal buckle is sensed through the strain sensor, a working condition of a safety rope on a worker body can be sensed in real time, when the safety rope breaks accidently and the signal received by the one-chip microcomputer is less than some threshold, the one-chip microcomputer gives an instruction to start the safety protection device, timely safety protection measures are provided, and therefore lives of works are saved.