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System for measuring oil level of oil product and method thereof

A measurement system and oil level technology, which is applied in the direction of measuring devices, liquid/fluid solid measurement, liquid level indicators for physical variable measurement, etc., can solve the problem of not being able to reflect the quality of fuel at the same time, to improve calculation accuracy and improve The effect of measurement accuracy

Pending Publication Date: 2021-10-01
汉中一零一航空电子设备有限公司
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Problems solved by technology

[0005] In addition, the current full-immersion or non-full-immersion fuel sensor can only measure the remaining fuel in the tank, and cannot reflect the quality of the fuel at the same time.
The existing technology integrates the functions of oil level measurement and low oil level alarm, but does not include the function of fuel quality measurement

Method used

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  • System for measuring oil level of oil product and method thereof

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Embodiment Construction

[0027] The present invention is further described below in conjunction with accompanying drawing:

[0028] figure 1 A processor 10 is included in it, wherein the processor 10 sends out a TTL excitation signal 11, and after passing through a low-pass filter 12, it becomes a sinusoidal signal A 15 of the same frequency.

[0029] specific:

[0030] Including processor 10, low-pass filter 12, sampling resistor 13, sensor to be tested 14, differential acquisition processing circuit 17, frequency mixing module 19 and A / D conversion circuit 21; processor 10 is divided into two circuits, one road is connected to the mixer frequency module 19, the other road is connected to low-pass filter 12, sampling resistor 13 and sensor 14 in turn, and sensor 14 is grounded; the two ends of sampling resistor 13 are connected to differential acquisition processing circuit 17, and differential acquisition processing circuit 17 is connected to mixing module 19, mixing The output end of the frequenc...

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Abstract

The invention discloses a system for measuring an oil level of an oil product and a method thereof. The system comprises a processor, a low-pass filter, a sampling resistor, a sensor, a differential acquisition processing circuit, a frequency mixing module and an A / D conversion circuit, the processor is divided into two paths, one path is connected to the frequency mixing module, the other path is sequentially connected with the low-pass filter, the sampling resistor and the sensor, and the sensor is grounded; two ends of the sampling resistor are connected with the differential acquisition processing circuit, the differential acquisition processing circuit is connected with the frequency mixing module, an output end of the frequency mixing module is connected with the A / D conversion circuit, and the A / D conversion circuit is connected with the processor. By measuring the impedance of the oil level sensor, an accurate capacitance value representing the current oil level can be obtained, and compared with traditional measurement, the measured capacitance eliminates the influence of equivalent resistance, so that the measurement precision is improved.

Description

technical field [0001] The invention relates to the field of liquid level measurement design, in particular to an oil level measurement system and method. Background technique [0002] The remaining fuel in the aircraft fuel tank is an important indicator for evaluating aircraft endurance and ensuring flight safety. Real-time and accurate measurement of the remaining fuel in the fuel tank during flight can improve the flight quality and safety of the aircraft. The aircraft fuel measurement system used the measurement technology of consumption gauge sensor in the early stage, that is, it was installed on the fuel supply pipeline to measure the fuel consumption; the second-generation fighter jets in Britain, the United States and other countries used analog fuel quantity measurement devices, that is, measured by capacitive liquid level sensors. The amount of fuel in the fuel tank; the third-generation aircraft widely adopts a measurement system combining fuel amount and consum...

Claims

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Application Information

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IPC IPC(8): G01F23/26G01F23/24G01N27/06
CPCG01F23/24G01F23/266G01N27/06
Inventor 杨瑞民赵玉磊范晓辉木子尼·克劳迪奥
Owner 汉中一零一航空电子设备有限公司
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