The Research on Correction Method of Capacitance Signal Drift for Drop Analysis System

Abstract:

In the fiber-capacitance droplet analysis system, some uncertain factors lead to the difference between measured value of the sensor capacitance and the actual value.In order to effectively solve the problem,this paper describes a drift correction algorithm.By measuring the no-load capacitance of sensor,this paper sets a capacitance correction factor to modify the real-time capacitance signal value.Theoretical analysis and experimental results show that after modified by the correction algorithm,capacitance measurement value reflects the nature of the droplet itself and is comparable.The initial capacitance value variance reduces from 0.047980133 to 0.000144091,improving the stability of the system and providing valid data for future study.

• Periodical: Advanced Materials Research (Volume 988)
• Pages: 521-525
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.988.521
• Online since: July 2014
• Authors: Qing Song, Shi Hui Zhang*, Ming Yang Qiao
• Keywords: Capacitance Signal Drift Correction Algorithm, Droplet Analysis System, Initial Capacitance Value Variance, No-Load Capacitance

References

[1] S. Qing. Research of the identification method based on Drop Analysis Technology and Droplet Fingerprint,. Tianjin University. (2005).

[2] Z.C. Song. Fiber-Capacitive signal processing circuit of Drop Analyzer,. Beijing University of Posts and Telecommunications. (2011).