{"title":"Precise CDC based Measurement System for Biomedical Applications","authors":"Tadeás Bednár, S. Borik, B. Babušiak","doi":"10.23919/MEASUREMENT47340.2019.8779987","DOIUrl":null,"url":null,"abstract":"The topic of the article is the design and construction of the device usable in various types of capacitance measurement. The AD7745 chip presents the main part of the created device. The system contains auxiliary circuits for extension of CDC range and multiplexors to measure one from connected capacitances. The device functionality is described in detail. The ability of the device to be used in various types of the biomedical application was proved by measurements. The article presents measurements of liquid level, breathing and it also presents a way how to use the AD7745 with multiplexors to reliably map a position of pressure applied to the sensor matrix.","PeriodicalId":129350,"journal":{"name":"2019 12th International Conference on Measurement","volume":"19 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2019 12th International Conference on Measurement","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.23919/MEASUREMENT47340.2019.8779987","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
The topic of the article is the design and construction of the device usable in various types of capacitance measurement. The AD7745 chip presents the main part of the created device. The system contains auxiliary circuits for extension of CDC range and multiplexors to measure one from connected capacitances. The device functionality is described in detail. The ability of the device to be used in various types of the biomedical application was proved by measurements. The article presents measurements of liquid level, breathing and it also presents a way how to use the AD7745 with multiplexors to reliably map a position of pressure applied to the sensor matrix.
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