Application of Capacitive Sensor in Measurement of Material Transportation

Abstract:

A detection system of capacitive sensor is designed and the application of capacitive sensor in measurement of material transportation is discussed. On the basis of measuring the dielectric constant change of the material in conveyor, the system can detect density variation of the material. The signal conditioning circuit of measurement system consists of capacity/voltage conversion circuit, phase shifter and programmable gain amplifier etc. It can reduce the influence of cable’s distributed capacitance and other parasitic capacitance. The results show that the system has high measurement precision of the relative value, and better anti-interference ability.

• Periodical: Applied Mechanics and Materials (Volumes 303-306)
• Pages: 922-925
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.303-306.922
• Online since: February 2013
• Authors: Zhi Hong Xiao
• Keywords: Anti-Interference, Capacitive Sensor, Measurement, Phase Shift

References

[1] Soederholm, A: Bulk Solids Handling. vol. 20(April 2000), pp.534-537.

[2] Manchun Lang, Hongchang Yi, Zhikang Zhang: Nuclear Electronics & Detection Technology. Vol. 26 (2006), pp.443-444. (in chinese).

[3] Information on http: /www. alibaba. com.

[4] Thakur, O. P: Modeling of capacitive sensor filled with elastic dielectrics and its advantages, Proceedings of the 3rd International Conference on Sensing Technology, ICST 2008. pp.467-471.

DOI: 10.1109/icsenst.2008.4757149

[5] Ahn, Hyeong-Joon: Mechanical Systems and Signal Processing. Vol. 29 (May 2012), pp.148-163.

[6] Heidari. M, Azimi. P: Research Journal of Applied Sciences. vol. 3(January 2011), pp.534-537.

[7] Kang Yang, Haifeng Guo, Yankai Xu: Chinese Journal of Scientific Instrument. Vol. 23 (March 20012), pp.115-116. (in chinese).