Simple measurement device for coulometric titration experiment

A coulometric titration and measuring device technology, applied in the direction of material electrochemical variables, etc., can solve the problems of expensive equipment, heavy equipment, and inconvenient portability, and achieve the effect of wide test range, low cost, and easy portability

Inactive Publication Date: 2014-07-23
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that there is no special coulometric titration experiment device at present, and the coulometric titration experiment is realized by means of some functions of other equipment, and the equipment is expensive, heavy and inconvenient to carry, and provides a simple measurement device for coulometric titration experiment

Method used

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  • Simple measurement device for coulometric titration experiment
  • Simple measurement device for coulometric titration experiment
  • Simple measurement device for coulometric titration experiment

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specific Embodiment approach 1

[0021] Specific implementation mode 1: the following combination Figure 1 to Figure 3 To explain this embodiment, the simple measurement device for coulometric titration experiment described in this embodiment includes a PC 1, a communication interface circuit 2, a single-chip computer 3, a digital-to-analog conversion circuit 4, a constant current source 5, a relay circuit 6, and a first analog-to-digital The conversion circuit 7, the second analog-to-digital conversion circuit 8, and the part to be tested 9;

[0022] The PC 1 sends the sampling interval time command and the output current setting value command to the single-chip microcomputer 3 through the communication interface circuit 2;

[0023] The output current setting value command signal output terminal of the single chip microcomputer 3 is connected to the digital signal input terminal of the digital-to-analog conversion circuit 4, and the analog signal output terminal of the digital-to-analog conversion circuit 4 is c...

specific Embodiment approach 2

[0039] Specific embodiment 2: This embodiment further describes the first embodiment, and further includes a first DC power supply 10, a second DC power supply 11, and a third DC power supply 12; the first DC power supply 10 is a single-chip microcomputer 3 and a digital-to-analog conversion circuit 4 provides working power; the second DC power supply 11 provides working power for the constant current source 5; the third DC power supply provides working power for the first analog-to-digital conversion circuit 7 and the second analog-to-digital conversion circuit 8.

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PUM

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Abstract

The invention discloses a simple measurement device for a coulometric titration experiment, belongs to the field of material testing, and aims to solve the problem that a special coulometric titration experimental device does not exist at present. The simple measurement device comprises a personal computer (PC), a communication interface circuit, a singlechip, a digital-analog conversion circuit, a constant current source, a relay circuit, a first analog-digital conversion circuit, a second analog-digital conversion and a to-be-detected part, wherein the PC gives a sampling interval time instruction and an output current set value instruction to the singlechip through the communication interface circuit; the singlechip outputs a current set value instruction signal to be loaded on the to-be-detected part through the digital-analog conversion circuit and the constant current source; the singlechip controls range selection of the constant current source through the relay circuit; an actual output current signal of the constant current source and a sampling voltage signal of the to-be-detected part are returned to the singlechip and the PC so as to acquire the non-stoichiometry of oxygen of the to-be-detected part.

Description

Technical field [0001] The invention relates to a coulometric titration experimental device, which belongs to the field of material testing. Background technique [0002] Perovskite structure oxide materials contain rich physical content. Because of their unique crystal structure and properties, they are widely used in condensed matter physics and material physics research. When the oxygen partial pressure changes, the transition metals in the oxides show different valences due to the existence of atomic or electronic defects in the crystals, and at the same time cause their oxygen content to change, showing a non-stoichiometric phenomenon of oxygen. The electrical, magnetic, optical and other properties have a great influence. One of the non-stoichiometric measurement methods is coulometric titration. The advantages of coulometric titration are: it can accurately measure the tiny changes in defect concentration, the oxygen bias has a wide range of changes, and the measurement ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/42
Inventor 龙柏君吕喆王舰
Owner HARBIN INST OF TECH
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