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Thermocouple temperature acquisition system

A technology of temperature acquisition system and thermocouple, which is applied to thermometers, thermometers using electric/magnetic elements directly sensitive to heat, and parts of thermometers, etc., can solve problems such as the inability to accurately determine the surface temperature of the workpiece to be welded, and achieve The effect of stable signal, stronger signal and strong anti-interference

Inactive Publication Date: 2019-07-26
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the thermal imager records the temperature distribution on the side of the workpiece, but cannot accurately determine the surface temperature of the welded workpiece.

Method used

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  • Thermocouple temperature acquisition system
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  • Thermocouple temperature acquisition system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as Figure 1-3 As shown, the present invention provides a kind of technical scheme: a kind of thermocouple temperature acquisition system, thermocouple network (1), is used for realizing the transformation of temperature to electromotive force; USB data collector (13), is used for J type thermocouple (2) The output electromotive force is converted and collected while encoding; the computer (9) converts the digital signal obtained by the host computer into the temperature value of the measuring end through the given functional relationship-equipment calibration; wherein, the thermoelectric The dual network (1) is electrically coupled to a USB data collector (13) through a matching cable, and the USB data collector (13) is connected to a computer (9) through a USB data cable.

[0031] The thermocouple network (1) includes a J-type thermocouple (2) and a 37-pin terminal board (3) and the J-type thermocouple (2) is electrically coupled to the 37-pin terminal board (3);...

Embodiment 2

[0034] refer to Figure 1-3, a thermocouple temperature acquisition system, which is basically the same as embodiment 1, and furthermore, when working, the thermocouple network (1) composed of three groups of J-type thermocouples (2) is connected to the 37-pin terminal board (3 ), then connect the 37-pin terminal board (3) to the USB data collector (13) with a supporting cable, and finally connect the USB data collector (13) to the computer (9) with a USB cable, three sets The J-type thermocouple (2) converts each detected temperature model into an electrical signal and transmits it to the USB data collector (13), and utilizes the USB data collector (13) to convert the electromotive force output by the J-type thermocouple (2), Encode and generate data while collecting, and then transmit the data to the computer (9), input the algorithm in the computer (9) in advance, first create the device object, and initialize and start AD, then make the collector read the AD data, and then...

Embodiment 3

[0036] refer to Figure 1-3 , a thermocouple temperature acquisition system, which is basically the same as embodiment 1, and furthermore, when working, the thermocouple network (1) composed of three groups of J-type thermocouples (2) is connected to the 37-pin terminal board (3 ), then connect the 37-pin terminal board (3) to the USB data collector (13) with a supporting cable, and finally connect the USB data collector (13) to the computer (9) with a USB cable, three sets The J-type thermocouple (2) converts each detected temperature into an electrical signal and transmits it to the USB data collector (13), and utilizes the USB data collector (13) to convert and collect the electromotive force output by the J-type thermocouple (2). At the same time, encode and generate data, and then transmit the data to the computer (9), input the algorithm in the computer (9) in advance, first create the device object, and initialize and start the AD, then make the collector read the AD da...

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Abstract

The invention discloses a thermocouple temperature acquisition system, comprising a thermocouple network, a USB data acquisition unit and computers, the thermocouple network is used for realizing transformation of temperature to electrodynamic potential; the USB data acquisition unit is used for transforming, acquiring and encoding electrodynamic potentials output by J-shaped thermocouples; the computers are subjected to equipment calibration one by one by virtue of a given function relationship and converts a digital signal acquired by an upper computer into a temperature value of a measuringterminal; and the thermocouple network is electrically coupled with the USB data acquisition unit by virtue of a matching cable, the USB data acquisition unit is connected with the computers by virtue of a USB data cable. The thermocouple temperature acquisition system disclosed by the invention has the advantages that a 37-needle terminal board is adopted for connecting multiple J-shaped thermocouples into a network, the effects of avoiding signal crosstalk and enabling a signal to be more stable are achieved, and only one terminal board is used, so that a signal conditioning circuit is reduced, and hardware cost, power consumption and board layout space are greatly reduced; besides, due to convenience in disassembly, different thermocouples can be selected for realizing temperature measurement requirements in different ranges.

Description

technical field [0001] The invention relates to the technical field of welding equipment, in particular to a thermocouple temperature acquisition system. Background technique [0002] Temperature is an important measurement parameter in the welding process and an important indicator to measure whether the equipment can operate normally. Aiming at the problem of the action law of frictional heat generation butt joint formation in the ultrasonic welding process of pole pieces, the ultrasonic welding head-workpiece contact area temperature measurement system is built, which can calculate the interface temperature between the workpiece and the workpiece according to the temperature of the welding-workpiece contact area, and reveal the ultrasonic welding process. The temperature rise law of the welding head-workpiece contact area caused by medium friction heat generation, and the influence of process parameters on the temperature of the welding head-workpiece contact area, and de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K7/02G01K1/02G01K1/024
CPCG01K7/02G01K1/024
Inventor 邢彦锋胡婧瑶高陈浩李小龙刘文杰
Owner SHANGHAI UNIV OF ENG SCI