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Thermometer chip and thermometer

A thermometer and chip technology, applied to thermometers, thermometers with directly heat-sensitive electric/magnetic elements, instruments, etc., can solve the problems of low measurement accuracy, improve measurement accuracy, improve measurement efficiency, simplify measurement methods and Effect of Thermometer Chip Volume

Pending Publication Date: 2021-10-22
上海润欣科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a thermometer chip, which aims to solve the problem of low measurement accuracy in traditional temperature measurement chips

Method used

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  • Thermometer chip and thermometer
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  • Thermometer chip and thermometer

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Embodiment Construction

[0031] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0033] The first aspect of the embodiments of the present invention provides a thermometer chip 100 for...

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Abstract

The invention provides a thermometer chip and a thermometer. The thermometer chip comprises a resistance value conversion circuit, a temperature measurement counting circuit, a timing circuit, a decoding output circuit and a time base circuit which are arranged in an integrated mode; when a calibration mode is switched, the resistance value conversion circuit is connected with a reference resistor, and the reference duration is obtained through the temperature measurement counting circuit and the timing circuit; when the measurement mode is switched, the resistance value conversion circuit is connected with a thermistor used for making contact with the human body, meanwhile, the temperature measurement counting circuit and the timing circuit finish measurement after counting to the reference duration, and the data is decoded through the decoding output circuit and output to the display module to display the corresponding temperature. The problem of inaccurate body temperature measurement caused by unstable output frequency of the resistance value conversion circuit due to unstable chip substrate temperature or power supply voltage is avoided, so that the measurement precision is improved, a mode of integrating a plurality of circuit structures is adopted, the measurement mode is simplified, the size of the chip of the thermometer is reduced, and the measurement efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of thermometers, in particular to a thermometer chip and a thermometer. Background technique [0002] At present, traditional mercury thermometers are inconvenient to operate, take a long time to measure, and are not convenient for places that require rapid measurement, and cannot automatically display the measurement readings; the temperature measuring head of the mercury thermometer contains mercury, and if it is accidentally damaged during measurement, it will cause harm to the human body. At the same time, mercury will also cause serious pollution to the environment. In this context, designing a digital thermometer to replace the mercury thermometer has become a top priority. [0003] The temperature measurement method used by many temperature measurement chips currently on the market requires the use of complex analog circuits, which requires high process technology and increases the layout area, which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K7/24
CPCG01K7/245
Inventor 蔡文前卢玉玲张丹丹邹云根肖敏
Owner 上海润欣科技股份有限公司
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