基于PSoC芯片的两路高精度频率测量系统设计

Design of high accuracy frequency measure system of two-channel signal based on PSoC chip

针对在脉冲频率测量中,测量精度低、频率范围窄等问题,提出了一种基于PSoC芯片的两路信号频率测量系统。采用PSoC芯片CY8C29666作为系统核心,以改进的多周期同步测频法为理论基础,结合PSoC芯片集成度高、系统资源丰富、配置灵活、稳定抗干扰的优点,实现了对0.1 Hz^10 MHz之间两路信号频率的高精度测量,并结合实验结果进行了精度分析。

In order to improve measure accuracy and broaden the frequency range, a frequency measure system of two-channel signal based on PSoC is proposed. The core processing unit of this system is CY8C29666. Based on the synchronous multi-cycle frequency measurement, and combined with the advantages of high integration, resourceful, flexible configuration and anti-jamming stability PSoC chips, the system performed high accuracy frequency measure of two-channel signal between 0.1 Hz^10M Hz. Based on the results, the measure accuracy is analyzed.