Multi-channel temperature acquisition system

A temperature acquisition system, multi-channel technology, used in thermometers, thermometer parts, thermometers with directly heat-sensitive electrical/magnetic components, etc. There are many modules, etc., to achieve the effect of increasing the acquisition channel, satisfying the use, and having a simple structure

Active Publication Date: 2012-02-01
SHANGHAI MICRO ELECTRONICS EQUIP (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitation of the accuracy of the sensor, the acquisition accuracy is only 0.5 degrees Celsius, which cannot meet the requirements of an ultra-precision temperature control system, and there are many modules that are difficult to install and use

Method used

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Embodiment Construction

[0036] In order to make the technical features of the present invention more comprehensible, the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0037] see figure 1 , figure 1 It is a schematic diagram of a multi-channel temperature acquisition system according to an embodiment of the present invention. The multi-channel temperature acquisition system includes a sensing unit 8 , a current source 7 , a multi-channel scanning switch unit 5 , an analog-to-digital converter 4 , a controller 3 , a memory 2 , and a communication unit 1 .

[0038] see figure 2 , figure 2 It is a schematic diagram of the current source structure of the embodiment of the present invention. The current source 7 is an adjustable current source for providing current excitation to the sensing unit 8 . The current source 7 includes a voltage source 79, a group of switch resistors (i.e. a switch resistor 71, a switch resistor 72, a swi...

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Abstract

The invention provides a multi-channel temperature acquisition system, including a sensing unit, a current source, a multi-channel scanning switch unit, an analog-to-digital converter, a controller, etc. The temperature of the surrounding environment of the channel temperature acquisition system is collected, the current source is used to provide current excitation to the sensing unit, the multi-channel scanning switch unit is used to select the temperature sensor of the sensing unit, and the selected The temperature data collected by the temperature sensor is transmitted to the analog-to-digital converter; the analog-to-digital converter is used to convert the analog signal selected by the multi-channel scanning switch unit into a digital signal, and provide it to the controller, and the control The device is used to provide switch selection signals to the multi-channel scanning switch unit, to provide selection signals to the current source, to process the digital signal of the analog-to-digital converter and provide it to the memory. The multi-channel temperature acquisition system of the present invention has a simple structure and improves acquisition accuracy.

Description

technical field [0001] The invention relates to a temperature acquisition system, in particular to a multi-channel temperature acquisition system. Background technique [0002] Temperature control is the basis of many high-tech technical equipment and product development, and is widely used in equipment in steel, chemical, food, pharmaceutical and electronic industries. High-precision temperature acquisition is the premise and condition of ultra-precision temperature control. The sampling accuracy of temperature depends on the accuracy of the current source and the sampling accuracy of the analog-to-digital converter. For high-precision temperature acquisition with multiple channels, the scan time becomes a major factor restricting the sampling accuracy. [0003] Chinese patent No. 02152772.5 discloses a temperature measurement device, which uses an infrared temperature sensor and a fixed frame to realize a non-contact temperature measurement function. Such devices are bul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K1/02G01K7/20G01K7/24
Inventor 庄车池峰周月豪
Owner SHANGHAI MICRO ELECTRONICS EQUIP (GRP) CO LTD
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