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Temperature measuring device and method with calibration function

A temperature measuring device and a function technology, applied in the field of temperature measuring devices with calibration function, can solve the problems of complicated operation and low efficiency, and achieve the effect of high temperature measuring accuracy and low cost

Active Publication Date: 2019-09-10
CHINA INNOVATION INSTR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Using third-party equipment, there are still problems such as complex operation and low efficiency

Method used

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  • Temperature measuring device and method with calibration function

Examples

Experimental program
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Effect test

Embodiment 1

[0035] figure 1 Schematically provides a simplified structure diagram of the temperature measuring device with calibration function in Embodiment 1 of the present invention, as figure 1 As shown, the temperature measuring device with calibration function includes:

[0036] A test unit, the test unit includes:

[0037] A fixed-value resistor, the fixed-value resistor has a connection terminal and is suitable for being connected in series with a proportional resistor;

[0038] a first memory, the first memory is used to store the data transmitted from the temperature measurement unit and the result of the first processor;

[0039] a first processor, the first processor processes the data sent by the temperature measurement unit;

[0040] a power interface, the output end of the power interface is connected to the first memory and the first processor;

[0041] a power supply output terminal, the power supply output terminal is arranged on the test unit and communicated with t...

Embodiment 2

[0058] An application example of the temperature measuring device and method with calibration function according to Embodiment 1 of the present invention.

[0059] In this application example, the precision of the proportional resistor is 0.1%, and the resistance value is 1KΩ; the temperature measuring resistor adopts PT1000; both the first voltage detection module and the second voltage detection module include a differential amplifier and an ADC sampler (shared), and the second The processor processes the electrical signal delivered by the ADC sampler.

[0060] The temperature measurement method of the embodiment of the present invention, that is, the working process of the temperature measurement device with calibration function according to the embodiment of the present invention, the temperature measurement method includes the following steps:

[0061] (A1) Establish communication between the test unit and the temperature measurement unit;

[0062]The proportional resist...

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Abstract

The invention provides a temperature measuring device and method with a calibration function. The temperature measuring device with the calibration function comprises a temperature measuring unit anda test unit, wherein the temperature measuring unit is provided with a temperature measuring resistor and a proportional resistor; the test unit includes a constant value resistor, a first memorizer,a processor, and a power interface, wherein the constant value resistor is provided with a wiring terminal and suitable for series connection with the proportional resistor; the first memorizer is used for storing data transmitted by the temperature measuring unit and results of the first processor; the first processor processes the data transmitted by the temperature measuring unit; and the output end of the power interface is connected with the first memorizer and the first processor. The temperature measuring device and method have the advantages of being low in cost and high in temperaturemeasuring accuracy.

Description

technical field [0001] The invention relates to temperature measurement, in particular to a temperature measurement device and method with calibration function. Background technique [0002] The high-precision temperature measuring device uses proportional resistance to measure temperature sensitive resistance, which can eliminate the error of constant current source or constant voltage source and improve the measurement accuracy. The accuracy of this measurement method proportional resistance determines the measurement accuracy of temperature sensitive resistance. For example, a temperature measuring device with a proportional resistor with an accuracy of 0.5%, 1KΩ and a temperature-sensitive resistor PT1000 is used. The measurement accuracy of the temperature-sensitive resistor PT1000 is ±5Ω, that is, the measurement temperature accuracy is ±1.3°C. This is not in line with the high-precision temperature measuring device, and the measurement error must be calibrated. [0...

Claims

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Application Information

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IPC IPC(8): G01K7/16G01K15/00
CPCG01K7/16G01K15/005G01K2215/00
Inventor 甘剑勤胡淇能范国正史振志闻路红
Owner CHINA INNOVATION INSTR CO LTD
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