The Design of Low-Power and High-Precision Electronic Scale Based on Single Chip
This paper introduces the design and fabrication of a low-power and high-precision electronic scale with resistance strain gauge as the weight sensor. According to the demand of commercial measurement, the paper compares and proves the various design schemes, chooses the cantilever-type resistance strain sensor with the STC89C52 single chip, and uses the 24-bit high-precision A/D converter chip HX711 to convert the signal to A/D. The system has the advantages of high integration, fast response speed, high precision, low power consumption, and strong anti-interference, which lowers the cost and improves the performance and reliability of the whole machine.
KeywordsSingle-chip Strain gauge Electronic scale HX711
This work was supported by the Tianjin Vocational Training Package Project–Professional training package for maintenance of household electrical appliances under Grant No. TJPXB1-1 (JB4071002).
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