Design of High Precision Electronic Scale Based on MSP430G2
- 10.2991/icemc-16.2016.53How to use a DOI?
- Small signal; Instrumentation amplifier; High precision A/D; MSP430G2553
The resistance bridge is used as a pressure sensor, when the external force is applied to generate 0 ~ 20mV voltage small signal, the precision instrumentation amplifier amplification 51 times, access to 16 bit high precision digital analog conversion (A/D) chip ADS1146. 16 bit A/D in the input voltage of 3.6V, the minimum resolution of 0.05mV, to achieve high precision pressure sensor signal acquisition, the accuracy can reach 0.1 grams. The A / D conversion to digital quantity through the SPI interface connected to the low power microprocessor msp430g2553, and then sent to the LCD display, through the calibration button and do some simple multiplication and achieve more functional. Test results show that the small signal amplification link can achieve the stability of the signal amplification, and can achieve accurate weighing.
- © 2016, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Jian Huang PY - 2016/05 DA - 2016/05 TI - Design of High Precision Electronic Scale Based on MSP430G2 BT - Proceedings of the 2016 International Conference on Education, Management and Computer Science PB - Atlantis Press SP - 255 EP - 258 SN - 1951-6851 UR - https://doi.org/10.2991/icemc-16.2016.53 DO - 10.2991/icemc-16.2016.53 ID - Huang2016/05 ER -