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A Thermal Resistance Temperature Measuring Instrument Based on Calibration Data

A temperature measuring instrument and a technology for calibrating data, which is applied to thermometers, thermometers, and measuring devices that use electric/magnetic elements that are directly sensitive to heat, and can solve problems such as low resistance accuracy

Active Publication Date: 2015-11-04
FOSHAN TIANZE TESTING SERVICE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The compensation of the temperature measurement error mainly adopts thermal resistance simulator or DC resistor manual operation, but the resistance precision used in thermal resistance simulator is not high

Method used

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  • A Thermal Resistance Temperature Measuring Instrument Based on Calibration Data

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Embodiment Construction

[0029] A thermal resistance temperature measuring instrument based on verification data, its circuit structure is shown in the accompanying drawings, it consists of an input circuit 1, an A / D converter 2, a single-chip microcomputer 3, a constant current source circuit 4, a non-volatile memory 5, The LED display 6 and the power supply 7 are composed, and the thermal resistance temperature automatic calibrator 9 is used to generate the calibrating data of each temperature calibrating point in the segmented data table. Among them, the input circuit 1 is used to filter and amplify the temperature and voltage signal output by the thermal resistance to remove various high-order harmonic signals and common interference. The constant current source circuit 4 is composed of a reference voltage source and an integrated operational amplifier. The reference voltage source Choose MC1403 with good temperature coefficient. The non-volatile memory 5 is used to save the segmented data table, ...

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Abstract

The invention relates to a thermal resistor temperature measuring instrument based on verification data. According to the thermal resistor temperature measuring instrument, an automatic thermal resistor temperature calibration instrument is used for simulating verification data of temperature verification points obtained by a resistor sensor to establish a segment data table; then a real temperature value of a measurement field is obtained by calculating according to the segment data table, so as to realize non-linear segment fitting and measurement error compensation of a thermal resistor indexing meter.

Description

(1) Technical field: [0001] The invention relates to a thermal resistance temperature measuring instrument based on calibration data, which adopts the thermal resistance temperature automatic calibrator to simulate the calibration data of the temperature calibration point obtained by the thermal resistance sensor to establish a segmented data table, and then divides The real temperature value of the measurement site can be obtained by looking up the table of the segment data table, so as to realize the nonlinear segment fitting and measurement error compensation of the thermal resistance indexing table. (2) Background technology: [0002] The temperature measuring instrument is a temperature measuring product widely used in the industry, and it is used in conjunction with the thermal resistance adopted. The resistance value of the thermal resistance sensor changes with temperature, and the temperature value can be obtained by checking the corresponding thermal resistance ind...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K7/16
Inventor 张金木
Owner FOSHAN TIANZE TESTING SERVICE CO LTD