SMART MAGNETIC SENSOR AND VEHICLE DETECTION METHOD BASED ON SMART MAGNETIC SENSOR

摘要

A smart magnetic sensor and a vehicle detection method based on a smart magnetic sensor. The smart magnetic sensor comprises an MCU circuit, a GMI detection unit, a compensation circuit, a detection circuit, and a management circuit. The GMI detection unit is used for detecting a magnetic signal. The compensation circuit is used for magnetically compensating the magnetic signal detected by the GMI detection unit. The detection circuit is used for detecting an environmental magnetic field where the GMI detection unit is located. The management circuit is used for amplifying the magnetic signal detected by the GMI detection unit, and managing the compensation circuit and the detection circuit. The MCU circuit is used for controlling the management circuit, so as to achieve management control of the management circuit over the GMI detection unit, the compensation circuit, and the detection circuit. The smart magnetic sensor can be applied to vehicle detection, detects a vehicle disturbance geomagnetic field anomaly signal of a parking space, and obtains vehicle information about the parking space.