A thermoelectric material resistivity measurement system and measurement method based on labview

Abstract

The invention discloses a thermoelectric material resistivity measurement system and a measurement method based on LabVIEW. The system includes a parameter setting module, a communication module, a data processing module and a display module. Among them, the parameter setting module is used for the user to input parameters, instructions and adjustment coefficients; the communication module is used for serial communication with the lower computer, sending instructions or receiving data; the data processing module is used for current conversion operation on data, and calculates the specific The resistivity; the display module is used for the display of the calculation results and the display of the received data. The present invention uses LabVIEW as the software platform, builds a friendly user interface, is easy to operate, greatly shortens the development period and saves development costs, and can collect, process and display in real time; it can effectively solve the problem that the resistivity of thermoelectric materials changes with temperature. The non-linear error can accurately measure the resistivity of the material, reduce the influence of Peltier and Seebeck effects on the measurement of the resistivity of thermoelectric materials, thereby improving the measurement accuracy of the resistivity.

Description

technical field [0001] The invention relates to the fields of measurement technology, virtual instrument technology, and performance testing of thermoelectric materials, in particular to a measurement system and method for resistivity of thermoelectric materials based on LabVIEW. Background technique [0002] Energy crisis and environmental pollution are two major problems facing social development at the present stage. Research on green renewable energy has become crucial. As one of the green renewable energy sources, the thermoelectric conversion of semiconductor thermoelectric materials has been placed high expectations. Semiconductor thermoelectric material is a new type of functional material that utilizes the movement of carriers inside a solid to realize mutual conversion of thermal energy and electrical energy. How to improve the conversion efficiency of thermoelectric materials is the key point of current research. The conversion efficiency of thermoelectric mate...

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Problems solved by technology

[0003] In order to solve the problem of insufficient measurement accuracy of the resistivity of thermoelectric materials and the influence of Joule heat, the present invention provides a thermoelectric material resistivity measurement system and measurement method based on LabVIEW, which can realize high-precision measurement and controllable frequency current commutation function , and has automatic measurement and friendly user interface

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