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Temperature-measurement compensating method and corrective type high-accuracy thermometer

A compensation method and thermometer technology are applied in the field of temperature measurement compensation and correction type high-precision thermometer, which can solve problems such as increasing cost and achieve the effect of high measurement accuracy.

Active Publication Date: 2011-11-23
CISDI ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In order to develop high-precision thermometers, most of the international efforts are to improve temperature measurement materials, structural forms, digital transmission, etc. As the price of rare metals rises, the cost may increase

Method used

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  • Temperature-measurement compensating method and corrective type high-accuracy thermometer
  • Temperature-measurement compensating method and corrective type high-accuracy thermometer
  • Temperature-measurement compensating method and corrective type high-accuracy thermometer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Method A: In the calibration experiment, the true temperature value T is used as the input value 1...i-the non-standardized thermometer measurement result value tg and the output value 1...i. In this embodiment, the test range recognized by the laboratory is 0-100°C , Using Pt1000 platinum thermal resistance temperature sensing element. The comparison is shown in Table 1.

[0059] Table 1 Calibration test temperature true value T- non-standardized thermometer measurement result value tg output value comparison table

[0060] Laboratory Accreditation Test

Thermometer system input value Ti

Unnormalized thermometer output value tgi

1

0

tg1

2

10

tg2

3

20

tg3

4

30

tg4

5

40

tg5

…i

Ti

tgi

[0061] In actual operation, the laboratory determines that the test consists of at least three groups: T1-tg1, T2-tg2, T3-tg3..., and the up...

Embodiment 2

[0075] Method B: In the calibration experiment, the true temperature value T is used as the input value 1...i-the non-standardized resistance measurement result value Rtg output value 1...i. In this example, the test range recognized by the laboratory is 0-100°C, Adopt Pt1000 platinum thermal resistance temperature sensing element.

[0076] Table 3 Schematic diagram of the corresponding relationship between the input value Ti of the thermometer system and the output value Rtgi of the non-standardized resistance measurement result

[0077]

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Abstract

The invention belongs to the technical field of temperature detection and particularly relates to a temperature-measurement compensating method. The method comprises the steps of: firstly carrying out scale testing on a non-standardized thermometer, and describing the error characteristics of the non-standardized thermometer through self-learning by contrasting to an international temperature scale curve; and in actual measurement application, compensating non-standardized temperature-measuring results through adoption of a conversion algorithm so as to obtain high-accuracy measurement outputvalues. The invention further discloses a corrective type high-accuracy thermometer, wherein an integrated digital converting and correcting device is additionally arranged in a service box of the non-standardized thermometer; the corrective type high-accuracy thermometer comprises a temperature signal detecting module, a digital converting module and a compensating algorithm module, thus the functional embedment of a correction model is realized; by starting from digital type analysis transmission and correction simultaneously, the measuring accuracy of the thermometer is increased; and after the non-standardized temperature values are corrected, an effect that the output results of non-standardized temperature values are close to temperature true values of international temperature scale is achieved.

Description

technical field [0001] The invention belongs to the technical field of temperature detection, in particular to a temperature measurement compensation method, and also to a corrected high-precision thermometer. Background technique [0002] High-precision thermometers have been used abroad, such as building air-conditioning heat load billing systems, etc. The country is still in the initial stage of application. In view of the increasing application of domestic mathematical models and the requirement of fine control production, the demand for high-precision thermometers has become increasingly prominent. [0003] Such as blast furnace cooling stave cooling water temperature detection is an excellent application example: in the past, only a dozen cooling stave systems formed in series at the inlet and outlet were only tested for the cooling water temperature of the main pipes at both ends of the stave system, and the inlet water was about 32°C and the outlet water was about 40...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K1/20G01K15/00G01K7/18
Inventor 胡狄辛曾宪文彭燕华熊兵罗颖张帆
Owner CISDI ENG CO LTD
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