Design and Characteristic Analysis of Cross-Capacitance Fuel-Level Sensor

Abstract

A cross-capacitance liquid level sensor is based on the principle of cross capacitance. This study designed a new single-tube cross-capacitance fuel-level sensor. The fuel-level measurement model is established for a single-tube cross-capacitive sensor, and the relationship between the measured liquid level and sensor output capacitance is derived. The characteristics of the sensor were tested experimentally. The experimental results demonstrate that the linearity error of the liquid-level sensor of the single-tube calculation for the spacecraft is ±0.48%, the repeatability error is ±0.47%, and the hysteresis error is ±0.68%. The cross-capacitive fuel-level sensor developed in this study can be used in the fuel tank of spacecrafts owing to its low weight and high precision.

Bioinspired sensors and applications in intelligent robots: a review

“…Tactile sensors based on the air/hydraulic pressure measurement use pressure sensors that are generally used for air and liquid pressure sensing. These sensors use the air or liquid inside them as a vibration propagation medium, allowing for the simultaneous gathering of high-frequency responses and deformation, as demonstrated by the BioTac finger from SynTouch LLC (Lai et al , 2011; Yu et al , 2018). The structure-acoustic tactile sensor uses the accelerometer and microphone to measure the contact force (Kyberd et al , 1998), offering a broad detection bandwidth, though limited to dynamic sensing.…”