Automatic calibration system for remote-measuring equipment

Abstract

The invention discloses an automatic calibration system for remote-measuring equipment, and belongs to the testing technology of the remote-measuring equipment. The automatic calibration system comprises a human-computer interaction interface, a calibration signal analog system, a matrix switch, the signal remote-measuring equipment, a data collection / reception unit, an instrument control unit, a data processing platform and a software control platform. The automatic calibration system estimates output signals through the data analyzing and processing method. The output signals and reference signals input by the calibration signal analog system are compared, fitting of a transmission curve is carried out, a system transfer function and transmission accuracy are calculated, and a data table is generated to record transmission data and a characteristic function of each channel. The automatic calibration system can test transmission factors of direct current signal channels and alternating current signal channels automatically according to the user requirements, and can be used for testing the transmission factors of the channels of the remote-measuring equipment of different types fast and accurately on the basis of a virtual instrument platform, obtain a transmission channel model of the equipment to be tested visually and clearly, and provide the basis for correction of the transmission channels of the remote-measuring equipment under different external environments.

Description

technical field [0001] The invention relates to an automatic calibration system for remote measurement equipment based on the LabWindows / CVI software platform, belonging to the remote measurement equipment testing technology. Background technique [0002] At present, domestic telemetry equipment development and production units all use manual or semi-automatic methods for testing. This test method has been unable to meet the testing requirements of increasingly complex telemetry systems, specifically reflected in the following problems: [0003] 1) It is only suitable for the test of simple telemetry equipment with few telemetry signal channels, few types and low transmission accuracy requirements. The testing process is very complicated, and it will take several hours for 2-3 testers to complete a complete test. [0004] 2) Multiple personnel are often required to perform division of labor testing. Each tester must master the direct or indirect measurement methods of vario...

AI Technical Summary

Problems solved by technology

[0002] At present, domestic telemetry equipment development and production units all use manual or semi-automatic methods for testing. This test method has been unable to meet the testing requirements of increasingly complex telemetry systems, specifically reflected in the following problems:

The testing process is very complicated, and it takes several hours for 2-3 testers to complete the complete test

[0004] 2) Multiple personnel are often required to perform division of labor testing. Each tester must master the direct or indirect measurement methods of various signal parameters, and interpret and manually record various measurement results. The accuracy of the test is greatly affected by human factors, and it is difficult to form standardized testing;

[0005] 3) It is impossible to calibrate the transmission coefficient of the telemetry channel, and only theoretical estimates can be used according to the hardware circuit design

Since the differences between different batches of telemetry cabins and different telemetry channels are not considered, the test results of the transmission accuracy of each telemetry channel are not realistic and accurate enough

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