Automatic Wiper System Based on the Adjacent Capacitive Edge Effect

Abstract:

An automatic wiper control system based on the adjacent capacitive used in automotive industry. Three types of capacitance sensor in different shapes (round-arrays, flower-shaped and single-ring) are designed, and their performances are simulated by using COMSOL and MATLAB under the same conditions. The results indicate the performance of the single-ring sensor is the best, and its sensitivity reaches 192.17fF/mm, which overcomes the problem of weak output. The data acquisition and conversion circuit based on digital chip AD7142 is designed to enhance the anti-interference and reduce the system cost. The experimental results prove the feasibility of the automatic wiper control system used on automatic car.

• Periodical: Applied Mechanics and Materials (Volumes 548-549)
• Pages: 501-505
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.548-549.501
• Online since: April 2014
• Authors: Peng Wang*, Wei Qi Yuan, Yu Tao Wang
• Keywords: Adjacent Capacitance Edge Effect, Capacitance Sensor Optimization, Digital Chip

References

[1] Alexander. V. Mamishev. InterdigitalDielectrometry Sensor Design and Parameter Estimation Algorithms for Non-Destructive Material Evaluation[D]. MIT, PhD's thesis , (1999).

[2] A.V. Mamishev, M. Zahrl, B.C. Lesieutre et al. Influence of geometric parameters on characteristics of an inter-digital dielectrometry sensor[C], IEEE Conference on Electrical Insulation and Dielectric Phenomena, San Francisco, 20. 23Oct. 1996: 550-553.

DOI: 10.1109/ceidp.1996.564531

[3] LI Nan , GUO Baolong, HUANG Chuan. Characterisation of liquid properties by electrical capacitance tomography sensor for security applications[C]/Proceedings of Second International Symposium on Electronic Commerce and Security (ISECS 2009). Nanchang, China. May, 22-24, 2009: 305-308.

DOI: 10.1109/isecs.2009.100

[4] R.C. Luo, Z.H. Chen. Modeling and implementation of innovative micro proximity sensor using micromachining technology[C], IEEE/RSJ International Conference on Intelligent Robots and Systems, Yokohama, Japan, 1993: 1709-1716.

DOI: 10.1109/iros.1993.583867

[5] MohdAmri Md. Yunus, Subhas Chandra Mukhopadhyay. Novel Planar Electromagnetic Sensors for Detection of Nitrates and Contamination in Natural Water Sources[J]. IEEE Sensors Journal, 2011, 11(6): 1440-1447.

DOI: 10.1109/jsen.2010.2091953

[6] Z.H. Chen, R.C. Luo, Design and implementation of capacitive proximity sensor using micro-electromechanical system technology[J], IEEE Transactions on industrial Electronics, 1998, 45(6): 886-894.

DOI: 10.1109/41.735332

[7] A.R. MohdSyaifudin, P. L. Yu, S. C. Mukhopadhyay, Michael J. Haji-Sheikh, J. Vanderford. Performance Evaluation of A New Novel Planar Interdigital Sensors[C]. Instrumentation and Measurement Technology Conference, Taiwan, 2010, 731-736.

DOI: 10.1109/imtc.2010.5488245

[8] Y.K. Sheiretor, M. Zahn. Dielectrometry measurements of moisture dynamics in oil-impregnated pressboard[J], IEEE Trans. Dielectr. Electr. Insul, 1995, 2; 329-351.

DOI: 10.1109/94.395423

[9] C. Shay and M. Zahn. Cylindrincal Geometry Electroquasistatic Dielectric Sensors[C]. IEEE Conference on Elecnicol Insulation and Dielectric Phenomena, Dalian, China, 2002, 126-129.

DOI: 10.1109/ceidp.2002.1048752

[10] Du Yan qing. Measurements and Modeling of Moisture Diffusion Processes in Transformer Insulation Using InterdigitalDielectrometrySensor[D]. MIT, PhD's thesis, (1999).