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Calibration method of a measuring device

A technology of measuring devices and calibration methods, which is applied to measuring devices, measuring electrical variables, instruments, etc., can solve the problems of low accuracy, low efficiency, and high cost, and achieve the effects of low cost, high efficiency, and high measurement accuracy

Active Publication Date: 2022-06-17
SUZHOU HUAXING YUANCHUANG TECH CO LTD
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Problems solved by technology

The above method 1 is calibrated after sampling and measuring the standard voltage, but the resistance value of the standard resistor is related to the voltage value of the output voltage, resulting in that after calibration under the standard voltage, the accuracy under other working voltages in actual use is still not high
The above method 2 requires the use of standard current and voltage source output devices and standard digital measuring instruments and other different instruments and meters, with many components, high cost and low efficiency

Method used

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Embodiment Construction

[0017] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the following describes the specific implementation, structure and characteristics of a calibration method of a measuring device according to the present invention with reference to the accompanying drawings and preferred embodiments. and its efficacy, as detailed below.

[0018] An embodiment of the present invention provides a method for calibrating a measuring device, including:

[0019] Adjusting the measuring device to be calibrated to a preset state, where the output type of the measuring device to be calibrated in the preset state is the preset output type, and the output range is the preset output range;

[0020] The output value of the measurement device to be calibrated is adjusted to n different output values ​​in turn, and after each adjustment to one of the output values, a digital multimeter is used to measu...

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Abstract

The invention discloses a calibration method of a measuring device. The method for calibrating the measuring device includes: adjusting the measuring device to be calibrated to a preset state, sequentially adjusting the output value of the measuring device to be calibrated to n different output values, and using a digital multimeter to measure Obtain an actual output value of the measuring device to be calibrated, and simultaneously obtain an actual measured value of the measuring device to be calibrated by measuring the measuring end of the measuring device to be calibrated; obtain an output value of the measuring device to be calibrated according to n output values ​​and n actual output values output calibration parameters; obtain the measurement calibration parameters of the measurement device to be calibrated according to the n actual output values ​​and the n actual measurement values; and calibrate the preset state of the measurement device to be calibrated according to the output calibration parameters and the measurement calibration parameters. The technical solution provided by the embodiment of the present invention realizes efficient, high-precision, and low-cost calibration of the measuring device.

Description

technical field [0001] Embodiments of the present invention relate to a calibration technology of a measurement device, and in particular, to a calibration method of a measurement device. Background technique [0002] In order to ensure high accuracy of the measurement results of the measuring device, it is usually necessary to calibrate the measuring device before it is actually used. [0003] In the prior art, the following two methods are usually used to calibrate the measuring device: 1. adding a fixed offset; 2. calibrating the output mode and the measurement mode respectively. The above-mentioned method 1 is calibrated after sampling and measuring the standard voltage, but the resistance value of the standard resistor is related to the voltage value of the output voltage, so that after calibration under the standard voltage, the accuracy under other working voltages in actual use is still not high. The above-mentioned method 2 requires the use of standard current and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R35/02
CPCG01R35/02
Inventor 缪亮
Owner SUZHOU HUAXING YUANCHUANG TECH CO LTD
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