新型数字电容式液位传感器

Abstract

Abstract:

Based on the principle of capacitance changed with dielectric constant between the two plates,a kind of technology for measuring liquid level of automobile fuel tank is introduced,and the amount of residual fuel and temperature in tank is displayed by LCD.With the automatic-compensation function of capacitive probe for signal acquisition,the temperature and impurities of fuel have no effect on the results.A highly-integrated capacitance-to-digital converter is used to detect capacitance signal to improve the measurement accuracy.The signal transmission network can be integrated with automotive body-network system easily and the accurate and real-time result is displayed.

Key words: liquid level of automobile fuel tank;capacitive probe;automatic-compensation function;capacitance-to-digital converter

CLC Number:

TN79

LI Yi-Fang, ZHU Hua-Ming, TONG Xin. A Novel Digital Capacitive Liquid Level Sensor[J]., 2011, 24(5): 65-.

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A Novel Digital Capacitive Liquid Level Sensor

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