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Temperature measuring device and temperature measuring method thereof

A technology of temperature measurement and temperature sensor, applied in the direction of measurement device, heat measurement, thermometer, etc., can solve the problems of difficult to achieve high-precision temperature measurement, low signal-to-noise ratio of output signal, self-heating error sensor, etc., to achieve high precision The effect of adaptive temperature measurement

Active Publication Date: 2012-07-04
SHANGHAI MICRO ELECTRONICS EQUIP (GRP) CO LTD
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  • Abstract
  • Description
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Problems solved by technology

However, for various temperature sensors, the current source excitation used remains unchanged, and the use of inappropriate current source excitation for temperature sensors will cause self-heating errors or make the signal-to-noise ratio of the sensor output signal low, making it difficult to achieve high-precision temperature measurement

Method used

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  • Temperature measuring device and temperature measuring method thereof
  • Temperature measuring device and temperature measuring method thereof
  • Temperature measuring device and temperature measuring method thereof

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Embodiment Construction

[0028] The temperature measuring device and the temperature measuring method thereof proposed by the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in very simplified form, and are only used for the purpose of conveniently and clearly assisting in describing the embodiments of the present invention.

[0029] Such as figure 1 As shown, the present invention provides a temperature measuring device, including at least two temperature sensors, a precision reference resistance group, a channel switching device, a precision constant current source group, a low-pass filter, an analog-to-digital converter, and a controller. The temperature The sensor and the channel switching device form a temperature measurement channel, and the low-pass filter and...

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Abstract

The invention provides a temperature measuring device, comprising at least two paths of temperature sensors, a precise reference resistor group, a channel switching device, a precise constant-current source group, a low-pass filter, an analog / digital converter and a controller, wherein the temperature sensors and the channel switching device constitute a temperature measuring channel, and the low-pass filter and the analog / digital converter are connected to constitute a signal processing circuit; the temperature sensors, the precise constant-current source group and the precise reference resistor group are connected with the low-pass filter through the channel switching device; and the controller is respectively connected with the channel switching device, the precise constant-current sources and the analog / digital converter and used for controlling the selection of the precise reference resistors of the precise reference resistor group, the precise constant-current sources of the precise constant-current source group and temperature measuring channels and processing digital signals of the analog / digital converter.

Description

technical field [0001] The invention relates to the field of temperature measurement, in particular to a high-precision self-adaptive temperature measurement device and a temperature measurement method thereof. Background technique [0002] Temperature is a common and important physical parameter in the production process and scientific experiments. It is the main condition for high-quality, high-yield, low-consumption and safe production. , rubber, printing and dyeing and food and other fields are widely used. [0003] Currently used temperature measurement devices and temperature measurement methods have implementation limitations, or fail to meet high-precision measurement standards. [0004] The application number is 200710076831.7, and the publication number is CN 101377440A patent "temperature measuring device and its temperature calibration method", which proposes a temperature measuring device and a temperature calibration method, which uses the real-time measured s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K7/16
Inventor 靖俊聂宏飞
Owner SHANGHAI MICRO ELECTRONICS EQUIP (GRP) CO LTD
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