Multifunctional mineral thermoelectric instrument

Abstract

The invention provides a multi-functional mineral thermoelectric instrument, comprising a hot pole, a cold pole, an electric heater installed in the hot pole, a hot pole temperature sensor, a cold pole temperature sensor installed on the cold pole, a signal processing circuit, a temperature control Switching circuit and display, in which the input terminals of the signal processing circuit are respectively connected to the hot pole, the cold pole and the temperature sensors of the hot and cold poles, and the output terminals are respectively connected to the temperature control switch circuit and the display, and the temperature control switch circuit is connected to the electric heater. In that: the signal processing circuit includes a single-chip microcomputer and a temperature signal front-end circuit connected thereto, a thermoelectric signal front-end circuit, and a humidity signal front-end circuit; A probe and a humidity sensor, wherein the output terminal of the single chip microcomputer is connected with a display and a temperature control switch circuit. The invention can simultaneously test various parameters such as thermoelectric potential, thermoelectric curve, thermoelectric coefficient, conduction type, temperature, humidity, resistance and the like involved in the thermoelectricity research of metal and semiconductor minerals, and is applied in mineral type research.

Description

technical field [0001] The invention relates to an instrument for measuring the thermoelectric effect of metals and semiconductor minerals, belonging to the technical field of mineral property testing. Background technique [0002] Metal or semiconductor minerals can generate thermoelectric potential under the condition of temperature difference. Mineral thermoelectricity has a special typotype significance. It is an important parameter to characterize the relationship between mineral structure, composition and formation conditions (such as temperature, pressure, medium composition change, etc.), and can indicate the environment and physical and chemical conditions of mineral formation. It can judge paleogeothermal temperature and ore-forming temperature, predict concealed ore bodies, study ore-forming zoning, and evaluate the denudation level of ore deposits, etc. How to quickly and accurately measure the temperature, thermoelectric potential or thermoelectric curve, and t...

AI Technical Summary

Problems solved by technology

In general, the cold poles of (1) to (3) are constant temperature through water flow, the structure is complex and difficult to control, which affects the accuracy of the activation temperature; while (4) is digitally displaying the thermoelectric coefficient when the temperature difference is 10°C , but because the set activation temperature is small, the test results are difficult to truly reflect the thermoelectricity of the sample (there is no linear relationship between the thermoelectromotive force E of the mineral and the activation temperature △t); The thermal insulation measures, the heat dissipation is too fast and the constant temperature stability is reduced; their temperature control uses traditional circuits, the temperature control accuracy is low, and only a single activation temperature can be taken, and different activation temperatures cannot be set according to the actual needs of the measurement. ; In particular, these test devices have a single function, can only test a certain parameter related to the thermoelectric effect, and cannot fully reflect the thermoelectric characteristics of the sample

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