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Temperature measuring method and equipment

A temperature measurement and equipment technology, applied in the field of temperature measurement methods and equipment, can solve the problems of low stability, large uncertainty, low accuracy, etc., to improve measurement stability, enhance flexibility, and moderate power consumption. Effect

Pending Publication Date: 2020-08-04
NAT INST OF METROLOGY CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] This method has disadvantages such as low accuracy, low stability, and large uncertainty. It cannot be used for high-precision measurement and cannot meet the replacement work for standard mercury thermometers, which greatly affects the success of the Minamata Convention in my country. advance

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Embodiment Construction

[0034] Certain terms are used, for example, in the description and claims to refer to particular components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a criterion for distinguishing. As mentioned throughout the specification and claims, "comprising" is an open term, so it should be interpreted as "including but not limited to". The subsequent description of the specification is a preferred implementation mode for implementing the application, but the description is for the purpose of illustrating the general principle of the application, and is not intended to limit the scope of the application. The scope of protection of the present application should be defined by the appended claims.

[0035] refer to Figure 1-Figure 6 , a temperature mea...

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Abstract

The invention provides temperature measuring equipment which is connected with a temperature sensor and comprises a conditioning module and a reference voltage module. The conditioning module is further connected with a gain amplification module and an analog-to-digital conversion module and used for sampling a channel in turn; and the conditioning module is also provided with a non-sampler excitation current holding circuit, so that a technical basis is provided for realizing high-precision measurement. Furthermore, the invention further comprises a temperature measuring method; multiple indexing methods can be selected, the use convenience is expanded, and the measuring stability is improved.

Description

technical field [0001] The invention is applicable to the field of temperature measurement, and in particular relates to a temperature measurement method and equipment. Background technique [0002] The United Nations Environment Program officially adopted the Minamata Convention on Mercury in October 2013, and my country is a party to it. The Convention stipulates that from 2020, all mercury and its compounds, and the production, import and export of mercury-containing products will be banned. The use of high-precision standard digital thermometers can meet the technical requirements of replacing standard mercury thermometers, and provide technical support for protecting the environment and reducing "mercury" pollution. [0003] At present, digital thermometers mostly use standard platinum resistance thermometer (SPRT) or high-precision industrial platinum resistance thermometer (IPRT) sensor for temperature measurement. Among them, industrial platinum thermal resistance ...

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Application Information

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IPC IPC(8): G01K7/20
CPCG01K7/20
Inventor 金志军邱萍孙毅刘薇陈伟昕
Owner NAT INST OF METROLOGY CHINA