Combed capacitance type oil-level sensor box capable of blocking oil level fluctuation

An oil level sensor and capacitive technology, which is applied in the direction of liquid level indicator for physical variable measurement, can solve the problems of unstable capacitance value and inaccurate oil gauge indication, etc., and achieve the effect of accurate capacitance value
CN101922958BActive Publication Date: 2011-12-21重庆德格科技发展有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
重庆德格科技发展有限公司
Publication Date
2011-12-21

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Abstract

The invention discloses a combed capacitance type oil-level sensor box capable of blocking oil level fluctuation, which comprises a box body and a box cover matched with the mouth part of the box body. The combed capacitance type oil-level sensor box is characterized in that: the section of the box body is in a rectangle and is deeper, mutually symmetrical first clamping grooves are respectively arranged at two sides of the lower part in the box body, at least one fuel feeding hole is arranged on the bottom of the box body, support lugs at two sides of the mouth part of the box body are respectively provided with a first square clamping hole; mutually symmetrical second clamping grooves are respectively arranged at two sides in the box cover, a wire outlet hole is arranged on the back surface of the box cover, two sides of the box cover are respectively provided with a first wedge-shaped lug boss; and the two first wedge-shaped lug bosses are respectively blocked with the first squareclamping holes on the support lugs at two side of the mouth part of the box body. The invention solves the problems of influencing and interfering measurement results of the combed capacitance type oil level sensor by the oil level fluctuation, ensures that capacitance values output by the combed capacitance type oil level sensor are accurate and stable and digitals indicated by an oil meter really reflects the real oil mass in a vehicle oil tank.
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Description

technical field

[0001] The invention relates to a component for ensuring reliable operation of a sensor, in particular to a comb-shaped capacitive oil level sensor box capable of blocking oil level fluctuations. Background technique

[0002] The fuel level sensor of the vehicle is installed in the fuel tank, and the signal of the oil level change in the fuel tank is collected and transmitted to the controller for processing, and then transmitted to the fuel gauge to indicate the remaining fuel in the fuel tank. At present, the fuel level sensor used in most automobiles is a float type variable resistance sensor. Although the structure is simple, due to the influence of oil level fluctuations, the output resistance value is jumping, resulting in low signal resolution, and it is impossible to accurately measure the fuel oil of the vehicle. For the amount of oil in the tank, the error of the oil gauge indication is about 10%. In order to improve the accuracy of the oil level s...

Claims

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