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Temperature measuring device and method with calibration function
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A temperature measuring device and technology of functions, applied in the field of temperature measuring devices with calibration function, can solve the problems of complicated operation and low efficiency, etc.
Active Publication Date: 2021-09-14
CHINA INNOVATION INSTR CO LTD +1
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Abstract
Description
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Application Information
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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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Effect test
Embodiment 1
[0033] The temperature measuring device with calibration function according to Embodiment 1 of the present invention, the temperature measuring device with calibration function includes:
[0034] A test unit, the test unit includes:
[0035] A fixed-value resistor, the fixed-value resistor has a connection terminal and is suitable for being connected in series with a proportional resistor;
[0036] 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;
[0037] a first processor, the first processor processes the data sent by the temperature measurement unit;
[0038] a power interface, the output end of the power interface is connected to the first memory and the first processor;
[0039] a power supply output terminal, the power supply output terminal is arranged on the test unit and communicated with the power supply interface;
[0040] A temperature measurement unit, the tempera...
Embodiment 2
[0056] An application example of the temperature measuring device and method with calibration function according to Embodiment 1 of the present invention.
[0057] 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.
[0058] 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:
[0059] (A1) Establish communication between the test unit and the temperature measurement unit;
[0060] The proportional resis...
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Abstract
The invention provides a temperature measuring device and method with a calibration function, the temperature measuring device with a calibration function includes a temperature measuring unit, the temperature measuring unit has a temperature measuring resistance and a proportional resistance; the testing unit includes: a fixed value resistor, the The fixed-value resistor has a connection terminal, which is suitable for being connected in series with the proportional resistor; the first memory is used to store the data transmitted from the temperature measurement unit and the results of the first processor; the first processor processes the temperature measurement unit The transmitted data; a power interface, the output end of the power interface is connected to the first memory and the first processor. The invention has the advantages of low cost, high temperature measurement precision and the like.
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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