FPGA-based design of laser gyro signal acquisition circuit

With the continuous evolution of electronic technology, field-programmable gate array (FPGA) has demonstrated significant advantages in the realm of signal acquisition and processing, and signal acquisition plays a pivotal role in the practical applications of laser gyros. By analysis of the output signals from a laser gyro and an accelerometer, this paper presents a circuit design for signal acquisition of the laser gyro based on domestic devices. The design incorporates a finite impulse response (FIR) filter to process the gyro signal and employs a small-volume, impact-resistant quartz flexible accelerometer for signal aquisition. Simulation results demonstrate that the errors in <italic>X</italic>, <italic>Y</italic>, and <italic>Z</italic> axes fall within acceptable ranges while meeting filtering requirements. The use of FPGA for signal acquisition and preprocessing enhances configuration flexibility, which provides an idea and method for optimizing performance and processing signals in laser gyro applications.