A DSP-based LCR meter design

Jianyu Ma; Bin Wei; Hengyi Liu; Tao Liu

doi:10.1117/12.3030245

5 June 2024 A DSP-based LCR meter design

Jianyu Ma, Bin Wei, Hengyi Liu, Tao Liu

Proceedings Volume 13163, Fourth International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2024); 131630H (2024) https://doi.org/10.1117/12.3030245
Event: International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2024), 2024, Xi'an, China

Abstract

The system is based on the principle of balanced bridge four-wire measurement, with TI's C2000 series TMS320F28379D processor as the core, The system uses DDS to generate a sinusoidal excitation signal of the bridge measurement circuit, the measured inductance or capacitance through the four-wire test folder access to the automatic balance bridge, DSP on-chip ADC bridge signal for dual-channel synchronous sampling, access to the device under test voltage, current vector signal discrete sequence; and then use the DSP's outstanding digital signal arithmetic capabilities, through the FFT operation to get the amplitude of the voltage and current signals, phase information, and then calculate the capacitance of the capacitor, the value of the D value, or inductance of the sense of the value of the Q value. Test results show that this system the device is calibrated with the instrument, the error are within 3%.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jianyu Ma, Bin Wei, Hengyi Liu, and Tao Liu "A DSP-based LCR meter design", Proc. SPIE 13163, Fourth International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2024), 131630H (5 June 2024); https://doi.org/10.1117/12.3030245

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