A non-contact passive electromagnetic transmitter to any capacitive sensor -: design, theory, and model tests

被引:14
作者
Jachowicz, RS [1 ]
Wójtowicz, G [1 ]
Weremczuk, J [1 ]
机构
[1] Warsaw Univ Technol, Inst Elect Syst, PL-00665 Warsaw, Poland
关键词
noncontact sensor transmitter; electromagnetic transmitter; passive telemetry;
D O I
10.1016/S0924-4247(00)00398-8
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This paper presents a non-contact passive electromagnetic interface especially dedicated to capacitive sensors. Ln contrast to radio transmitters cooperating with remote sensors, our interface is extremely simple and requires integration only for the single plane coil with the capacitive semiconductor sensor structure. The interface structure and theoretical calculations done with the use of the Grover method are discussed in the paper. Presented data from interface tests proved that the interface can successfully operate with the frequency of some 11 MHz obtaining sensitivity of some 15 Omega/pF in the range of 0-22 pF. (C) 2000 Elsevier Science S.A. All rights reserved.
引用
收藏
页码:402 / 408
页数:7
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