A Method of Characterizing the Characteristic Parameters of Fuel Density Sensor by Resistance
A density sensor and characteristic parameter technology, which is applied in the direction of instruments, scientific instruments, specific gravity measurement, etc., can solve the problems of increasing aircraft maintenance time, changing the number of equipment, and cumbersome operation process, and achieves short procurement cycle, reduced production cost, and technical mature effect
Active Publication Date: 2021-08-13
四川泛华航空仪表电器有限公司
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Problems solved by technology
[0004] In order to solve the problem existing in the prior art that when the fuel density sensor fails and needs to be replaced, the characteristic parameters of the new fuel density sensor need to be reset and entered into the upper computer, which makes the operation process cumbersome, and the number of modified equipment is large, greatly increasing the maintenance time of the aircraft, and extremely Problems that are prone to error, the present invention provides a method for characterizing the characteristic parameters of the fuel density sensor with resistance
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[0030] The present invention will be further illustrated in the following examples, which are only used to illustrate the present invention and not to limit the present invention.
[0031] refer to figure 1 , figure 2 . figure 1 , the fuel density sensor is assembled according to the calculated K 0 A.K 0 B.K 2 A.K 2 B value, select the corresponding resistance and load it into the fuel density sensor. The present invention starts from the actual use of the fuel density sensor, and considers the large complexity of the entire measurement and control system and the resulting large amount of maintenance work. According to the value of the characteristic parameter of the fuel density sensor, the corresponding characteristic parameter calculation formula is set, and the calculated The results are converted into a table of correspondence between the characteristic parameters and resistance values of the fuel density sensor. According to the corresponding table, the correspo...
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The invention discloses a method for characterizing the inherent characteristic parameters of a fuel density sensor by resistance. The characteristic parameter K of the sensor is 0 、K 2 Converted into resistance, each parameter is represented by at least two resistance groups, each resistance group contains at least two resistance closed-loop parallel circuits composed of two resistances, each group of resistances is arranged in a linear array, and a parallel resistance circuit is formed by collinear grounding, and then Calculate the sensor characteristic parameters according to the characteristic parameter formula; according to the above calculation results, refer to the IEC industrial resistance resistance standard, formulate the relationship table between the above sensor characteristic parameters and the resistance value; when the sensor is assembled, according to the calculated sensor characteristic parameter value, select The corresponding resistance is loaded into the sensor; the upper computer is used to measure the resistance value in the sensor, and the characteristic parameters of the sensor are obtained by inversion. The invention does not need to change the characteristic parameters set in the upper computer, and realizes the replaceability of the same type of sensor.
Description
[0001] Technical field [0002] The invention relates to a method for characterizing sensor characteristic parameters by resistance, in particular to a method for characterizing fuel density sensor characteristic parameters by resistance. Background technique [0003] A sensor is a detection device that can transform the information sensed by detection into electrical signals or other required forms of information output according to certain rules. It is the primary link to realize automatic detection and automatic control. The sensor is generally composed of a sensitive element, a conversion element and a measurement circuit. The sensitive element senses the measured object, and the conversion element converts the measured object into an electrical parameter. The electrical parameter is converted into electricity by the measurement circuit. The core part of the sensor is the conversion element. In the aircraft fuel measurement and control system, various sensors are installed...
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IPC IPC(8): G01N9/00
CPCG01N9/00
Inventor 牛满江师显强
Owner 四川泛华航空仪表电器有限公司