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Calibration method and device for lubricating oil pollution degree sensor

A calibration method and calibration device technology, applied in the field of sensor calibration, can solve problems such as long operation time, decreased accuracy, and low automation level, and achieve the effects of high automation, improved accuracy, and high calibration efficiency

Active Publication Date: 2022-08-05
JIANGSU XCMG CONSTR MASCH RES INST LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the performance of the pollution degree sensors provided by various manufacturers in the market is uneven, and the counting accuracy cannot meet the actual needs
Or due to long-term use, aging of electronic components, wear of optical components, etc., the accuracy will decrease
In the above cases, the pollution degree sensor needs to be calibrated before it can be used. The existing calibration methods mainly have the following problems: (1) By analyzing the indication error of the sensor to be tested, the pollution degree deviation and slope are used to correct the pollution to be measured For the data of the pollution degree sensor, it is necessary to ensure that the test flow rate of the oil circuit of the standard pollution degree sensor and the oil circuit of the pollution degree sensor to be tested is the same, and it is necessary to install flow meters, pumps and other devices; and to test the serialized standard particle suspension, The operation time is long and the cost is high; (2) when manual calibration is performed according to expert experience, a large number of actual measured values ​​and theoretical values ​​are required, and the accuracy after calibration is difficult to meet the requirements of use; (3) the existing calibration methods cannot Carry out high-volume sensor calibration with a low level of automation

Method used

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  • Calibration method and device for lubricating oil pollution degree sensor
  • Calibration method and device for lubricating oil pollution degree sensor
  • Calibration method and device for lubricating oil pollution degree sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A method for calibrating a lubricating oil contamination degree sensor, comprising: calculating the standard voltage thresholds of the lubricating oil contamination degree sensor to be calibrated under a first standard particle suspension and a second standard particle suspension, and denoting it as the first standard voltage threshold and the second standard voltage threshold; calculate the average value of the first standard voltage threshold and the second standard voltage threshold, obtain the calibrated voltage threshold of the lubricating oil pollution degree sensor to be calibrated, and complete the calibration of the lubricating oil pollution degree sensor.

[0042] The method for calculating the standard voltage threshold of the lubricating oil contamination sensor to be calibrated under the first standard particle suspension includes:

[0043] 1. Obtain the cumulative particle pollution degree of the first standard particle suspension detected by the lubricatin...

Embodiment 2

[0062] Based on the method for calibrating a lubricating oil contamination degree sensor described in Embodiment 1, this embodiment provides a calibration device for a lubricating oil contamination degree sensor, such as figure 1 As shown, it includes: the lubricating oil pollution degree sensor 12 to be calibrated, the standard lubricating oil pollution degree sensor 10, the first standard particle suspension 1, the second standard particle suspension 3, the peristaltic pump 7 and the host computer 11; the host computer 11 respectively Connect with the lubricating oil pollution degree sensor 12 to be calibrated and the standard lubricating oil pollution degree sensor 10; the inlet of the peristaltic pump 7 is respectively connected to the first standard particle suspension 1 and the second standard particle suspension 3 through the pipeline, and the outlet of the peristaltic pump 7 passes through The pipeline is connected to the pressure regulator valve 8, the defoaming device...

Embodiment 3

[0090] Based on Embodiment 1 and Embodiment 2, this embodiment calibrates a certain lubricating oil pollution degree sensor, so that the calibrated lubricating oil pollution degree sensor reaches the accuracy of the standard lubricating oil pollution degree sensor.

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Abstract

The invention discloses a method and a device for calibrating a lubricating oil pollution degree sensor in the technical field of sensor calibration. The calibration method of the lubricating oil pollution degree sensor comprises the following steps: respectively calculating standard voltage thresholds of the lubricating oil pollution degree sensor to be calibrated in a first standard particle suspension and a second standard particle suspension, and recording the standard voltage thresholds as a first standard voltage threshold and a second standard voltage threshold; and calculating an average value of the first standard voltage threshold value and the second standard voltage threshold value, obtaining a calibrated voltage threshold value of the lubricating oil pollution degree sensor to be calibrated, and completing calibration of the lubricating oil pollution degree sensor. The calibration process does not depend on expert experience, the calibration efficiency is high, and automatic batch calibration can be achieved.

Description

technical field [0001] The invention belongs to the technical field of sensor calibration, and in particular relates to a calibration method and device for a lubricating oil pollution degree sensor. Background technique [0002] The working system of construction machinery is mainly based on the hydraulic system. The hydraulic system has particularly high requirements on the pollution degree of the lubricating oil. About 75% of the faults in the hydraulic system are caused by the oil pollution. Therefore, the pollution degree of the lubricating oil is monitored in real time. It is of great significance to avoid equipment failure and improve work efficiency. At present, the performance of pollution degree sensors provided by various manufacturers in the market varies, and the counting accuracy cannot meet the actual needs. Or due to long use time, aging of electronic components, wear and tear of optical components, etc., the accuracy is reduced. In the above cases, the poll...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/28
CPCG01N33/2888
Inventor 王普健王凯朱伟伟
Owner JIANGSU XCMG CONSTR MASCH RES INST LTD
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