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A method for collecting and processing nonlinear lubricating oil temperature signal

A temperature signal and processing method technology, applied in the field of avionics, can solve problems such as the difficulty of measuring nonlinear oil temperature parameters, and achieve the effect of facilitating maintenance and maintenance

Active Publication Date: 2020-06-09
SHAANXI QIANSHAN AVIONICS
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for collecting and processing nonlinear lubricating oil temperature signals, using a standard voltage measurement interface circuit to test theoretical values ​​and software algorithms through experiments to solve the current technical problem of difficult measurement of nonlinear lubricating oil temperature parameters

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  • A method for collecting and processing nonlinear lubricating oil temperature signal
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  • A method for collecting and processing nonlinear lubricating oil temperature signal

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Embodiment Construction

[0019] Below in conjunction with accompanying drawing and embodiment the present invention will be further described: concrete method is as follows:

[0020] Step 1: In the temperature test chamber, immerse the lubricating oil temperature sensor on the machine into the lubricating oil, set different temperatures T1 and different power supply voltages V1, use a voltmeter to measure the output voltage V2 of the sensor, and the test data are shown in Table 1:

[0021] Table 1 Test data table

[0022]

[0023]

[0024] Explanation: The first line on the left side of the table is the temperature value T1 set by the temperature test chamber in turn, the first line above the table is to change the sensor supply voltage V1 at a fixed temperature T1, and the middle of the table is the sensor output measured by a voltmeter at the corresponding temperature and input voltage The value of the voltage V2. Among them, the typical value range of the lubricating oil temperature T1 is se...

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Abstract

The invention belongs to avionics technology, and relates to a method for collecting and processing a nonlinear lubricating oil temperature signal; firstly, under laboratory conditions, an on-board lubricating oil temperature sensor is used to test the output of the lubricating oil temperature sensor under different temperature and power supply voltage conditions, Obtain the theoretical test data of the typical value of lubricating oil temperature T1 and sensor power supply voltage V1 and sensor output voltage V2; secondly analyze the corresponding relationship between lubricating oil temperature T1, sensor power supply voltage V1 and sensor output voltage V2; simulate and obtain lubricating oil temperature T1 and sensor power supply voltage V1, the linear model of the sensor output voltage V2; finally, according to the linear model, the acquisition and processing of the nonlinear lubricating oil temperature signal is realized under the limitation of the airborne equipment hardware and computing resources.

Description

technical field [0001] The invention belongs to the avionics technology, and in particular relates to a method for collecting and processing nonlinear lubricating oil temperature signals. Background technique [0002] Aircraft lubricating oil temperature signal is an important signal collected by flight parameter collector. Aircraft maintenance personnel can use this signal to know the temperature of the aircraft engine lubricating oil and understand the operating status of the engine. Generally, the lubricating oil temperature sensor is a temperature-measuring circuit with temperature-sensitive resistance components as the core. There are mainly two modes: constant voltage power supply and current measurement mode and constant current power supply and voltage measurement mode. The author encountered a temperature measurement circuit with a DC voltage supply voltage measurement mode on a certain type of aircraft. Because the sensor power supply voltage is different accordin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K7/16
CPCG01K7/16
Inventor 鲁爱森山磊李艳
Owner SHAANXI QIANSHAN AVIONICS
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