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Simple Measuring 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 inconvenient carrying, heavy equipment, expensive equipment, etc., and achieve the effect of convenient portability, low cost and wide test range

Inactive Publication Date: 2016-02-17
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 Measuring Device for Coulometric Titration Experiment
  • Simple Measuring Device for Coulometric Titration Experiment
  • Simple Measuring Device for Coulometric Titration Experiment

Examples

Experimental program
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specific Embodiment approach 1

[0021] Specific implementation mode one: the following combination Figure 1 to Figure 3 Describe this embodiment, the coulometric titration experiment simple measuring device described in this embodiment, it comprises PC 1, communication interface circuit 2, single-chip microcomputer 3, digital-to-analog conversion circuit 4, constant current source 5, relay circuit 6, the first modulus A conversion circuit 7, a second analog-to-digital conversion circuit 8 and a unit under test 9;

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

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

specific Embodiment approach 2

[0039] Specific embodiment two: this embodiment will further explain embodiment one, and also 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 supplies working power for the first analog-to-digital conversion circuit 7 and the second analog-to-digital conversion circuit 8 .

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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] Oxide materials with a perovskite structure contain rich physical content, and are widely used in condensed matter physics and material physics research because of their unique crystal structure and properties. When the oxygen partial pressure changes, the transition group metals in the oxide show different valence states due to the existence of atomic or electronic defects in the crystal, and at the same time lead to changes in the oxygen content, showing oxygen non-stoichiometric phenomenon, which is very important for the compound The electrical, magnetic, optical and other properties have a great influence. One of the non-stoichiometric measurement methods is coulometric titration. The advantages of the coulometric titration method are: it can accurately measure the tiny change of the defect concentra...

Claims

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Application Information

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