Method for indicating values of corrector and device thereof

A technology of instruments and correction functions, applied in the direction of instruments, etc., can solve problems such as inability to provide indication error and inability to correct instrument indication values

Inactive Publication Date: 2009-06-03
SEMICON MFG INT (SHANGHAI) CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology allows meters used on power systems to automatically change their measurement values based upon predetermined standards or rules set up during manufacturing processes. By calculating an approximation from these measurements, this process helps ensure accurate results are achieved over time.

Problems solved by technology

The technical problem addressed in this patents relates to improving the performance (accuracy) of measuring devices' readings accurately while maintaining their long term stability over time. Current methods require multiple precise measurements or recalitation before accurate measurement becomes necessary, leading to increased errors caused by changes made outside these environments.

Method used

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  • Method for indicating values of corrector and device thereof
  • Method for indicating values of corrector and device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] What is described in this embodiment is a method for correcting the indicated value of a thermometer, and the indicated value of a thermometer between 15°C and 30°C is corrected.

[0075] First, the correction coefficients a and b are calculated using the results obtained by point-by-point calibration of the thermometer. The results obtained by the point-by-point calibration method are listed in Table 1.

[0076] A pair of thermometers of the embodiment of table 1 adopts the result obtained by the method of point-by-point calibration

[0077] Accurate value (y i ) 15.0℃ 20.0℃ 30.0℃ Instrument representation value (x i ) 15.4℃ 20.2℃ 29.8℃

[0078] According to the formulas (1)-(4) in the specific embodiment, it can be calculated: a=-1.04167, b=1.04167.

[0079] Then, the correction coefficients a and b are used to form the correction formula for the indication value of the thermometer:

[0080] y'=-1.04167+1.04167x'

[0081] Then read the orig

Embodiment 2

[0084] What is described in this embodiment is a device for correcting the indicated value of a thermometer, which corrects the degree of a thermometer between 15°C and 30°C.

[0085] First, the correction coefficient calculation module is used to calculate the correction coefficients a and b by using the results obtained by point-by-point calibration of the thermometer. The results obtained by the method of point-by-point calibration are shown in Table 1, and the calculation method refers to the content described in Example 1.

[0086] Then use the correction formula to form a module, and use the correction coefficients a and b to form a correction formula for the thermometer indication:

[0087] y'=-1.04167+1.04167x'

[0088] Then use the correction value calculation module to read the original indication value of the thermometer, 24.0°C, and replace x' in the correction formula, and calculate the corrected thermometer indication value of 23.96°C.

[0089] When the original i

Embodiment 3

[0091] What is described in this embodiment is the method for correcting the indicated value of the hygrometer, and the indicated value of a thermometer between 40 and 80 is corrected.

[0092] Firstly, the correction coefficients a and b are calculated using the results obtained by point-by-point calibration of the hygrometer. The results obtained by the point-by-point calibration method are listed in Table 2.

[0093] The results obtained by the method of point-by-point calibration for hygrometer in embodiment three of table 2

[0094] Accurate value (y i %) 40.0 60.0 80.0 The instrument indicates the value ( x i%) 41.0 60.5 80.3

[0095] According to the formulas (1)-(4) in the specific embodiment, it can be calculated: a=-1.67819, b=1.01779.

[0096] Then use the correction coefficients a and b to form the correction formula for the hygrometer indication:

[0097] y'=-1.67819+1.01779x'

[0098] Then read the original indication value of the hygr

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Abstract

The invention provides a method for indicating values of a corrector, comprising the steps as follows: 1) discrete standard data is provided; 2) the discrete standard data and the method of regression analysis are employed so as to gain a correction function relating to the relationship between corrected indicating values of the corrector and the original indicating values of the corrector; 3) the original indicating values of the corrector are substituted in the correction function so as to gain the corrected indicating values of the corrector by calculation. The invention also provides a device for indicating values of the corrector. The method and the device have the advantages that the correction formula is worked out by the discrete standard data provided by the correction result and the indicating values of the corrector in the continuous range are corrected.

Description

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Claims

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Application Information

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Owner SEMICON MFG INT (SHANGHAI) CORP
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