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A device with a frequency-modulated output signal has been developed to increase the sensitivity and accuracy of measuring moisture content in crude oil and petroleum products in the range of 0~20%. The main element of the device is a self-oscillator transducer based on a transistor structure with negative differential resistance. A capacitive sensor in the form of a capacitive cylindrical structure...
The mathematical model of the microelectronic device for measuring petroleum products humidity which allows to define value of the voltage or current in any point of the circuit during the definite moment of time is designed. Based on the mathematical model of the microelectronic device for measuring petroleum products humidity the dependences of transformation function and equation of sensitivity...
The application of the proposed mathematical tools, that can be used for signal processing self-generating transducers of physical quantities, are considered. Its operating mechanism is based on frequency modulation, when the frequency deviation depends on the intensity of exposure measurement parameter. It is shown that the action for leveling additive errors in the channel the signal generator is...
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