Design of digital multimeter module based on ARM

摘要

We proposed a design and its implementation of digital multimeter module based on ARM. LTC2440 was employed to conduct high-precision A/D conversion, and S3C2440 was utilized as the master chip to control analog switch group to carry out function setting and range switching, and perform data processing and real-time measurement result displaying as well. It was proved that, the digital multimeter module with reliable performance and easy operation, possesses relatively high measurement precision, and can satisfy the measurement requirement of laboratory.