The design of measurement system in optically pumped magnetometer based on CPLD and embedded system

This article takes the helium optically pumped magnetometer which is widely used in mineral exploration and space magnetic field measurement as research object. It describes the principle of magnetic sensor and the basic structure of automatic tracking circuit. The research focuses on the modules of signal processing, frequency measurement and data processing in the optically pumped magnetometer. The measurement system which has the function of real-time data collection and display is designed based on CPLD (Complex Programmable Logic Device) and embedded system.