Stress monitoring device and method based on permanent magnet effect

The invention relates to a stress monitoring device and method based on a permanent magnet effect, and belongs to the technical field of bridge detection. The stress monitoring device mainly comprises a permanent magnet and a Hall sensor, the Hall sensor, an AD converter and a microprocessor are fixed to the sliding block together, and the permanent magnet is fixed to a permanent magnet bearing plate on the left side of a baffle on the right side of the sliding rail. When the stress change of a detected device is detected, force-magnetism relation calibration is firstly carried out, and the sliding block device is installed on the detected device after calibration is completed and is tightly connected with the detected device through a hole in the lower portion of the sliding block device. When the tested device is subjected to strain, the Hall probe inputs detected magnetic signals at different positions on the central axis of the permanent magnet, the magnetic signals are output after ...