Thermoelectric material resistivity measurement system based on LabVIEW and measurement method thereof

Abstract

The invention discloses a thermoelectric material resistivity measurement system based on LabVIEW and a measurement method thereof. The system comprises a parameter setting module, a communication module, a data processing module and a display module. The parameter setting module is used for parameter and instruction input and coefficient adjustment for a user. The communication module is used for serial communication with a lower computer and transmitting instructions or receiving data. The data processing module is used for performing current conversion operation on the data and calculating specific resistivity. The display module is used for displaying the calculation result and displaying the received data. The LabVIEW acts as a software platform so that a friendly user interface is established, operation is convenient, the development period is greatly reduced and development cost is saved, and real-time acquisition, processing and display can be performed; and nonlinear error generated by change of thermoelectric material resistivity along with temperature can be effectively solved, material resistivity can be accurately measured, influence on measurement of thermoelectric material resistivity caused by the Peltier and Seebeck effect can be reduced and thus measurement accuracy of resistivity can be enhanced.

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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