发明名称 |
METHOD FOR DIELCOMETRIC CONTROL OF MOISTURE OF MATERIALS |
摘要 |
FIELD: physics. ^ SUBSTANCE: capacitive sensor includes an oscillatory circuit which excites current pulses with different direction and frequency scan velocity in two transformation cycles. Deviation of the amplitude of the oscillatory circuit signal from the threshold voltage is detected and amplified and then used to control amplitude of current pulses. The resonance frequency is determined from zero phase difference between the exciting current and the oscillatory circuit output signal. Moisture of the material is determined from the result of digital measurement of the resonance frequency. ^ EFFECT: high accuracy of measuring moisture. ^ 1 dwg |
申请公布号 |
RU2416092(C1) |
申请公布日期 |
2011.04.10 |
申请号 |
RU20100103260 |
申请日期 |
2010.02.01 |
申请人 |
GOSUDARSTVENNOE OBRAZOVATEL'NOE UCHREZHDENIE VYSSHEGO PROFESSIONAL'NOGO OBRAZOVANIJA AKADEMIJA FEDERAL'NOJ SLUZHBY OKHRANY ROSSIJSKOJ FEDERATSII (AKADEMIJA FSO ROSSII) |
发明人 |
IVANOV BORIS RUDOL'FOVICH;LISICHKIN VLADIMIR GEORGIEVICH;SHVEDOV SERGEJ NIKOLAEVICH |
分类号 |
G01N27/22 |
主分类号 |
G01N27/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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