| 摘要 |
The proposed digital pressure transducer additionally contains a controlled optical radiation generator, three additional fiber-optic lightguides, two pairs of lenses, an optical signal adder, a light-emitting diode, a photodetector, a pulse forming amplifier. a high-pass filter, a synchronous detector, a digital code-to-frequency converter, a digital code-to-current converter, a voltage-to-code converter, a disk obturator with a synchronous driving motor, and a microprocessor control unit. The motor is connected to the output of the code-to-frequency converter. The output of the code-to-current converter is connected to the control input of the optical radiation generator. The output of the generator is connected to the input of the fourth lightguide. The optical outputs of the first, second, and third lightguides are optically connected to the first pair of the lenses via the obturator. The lenses of the first pair are optically connected to the lenses of the second pair via the fifth and the sixth lightguides. The lenses of the second pair are connected to the input of the photodetector via the optical signal adder. The output of the photodetector is connected to the input of the high-pass filter. The output of the filter is connected to the signal input of the synchronous detector. The output of the detector is connected to the input of the voltage-to-code converter. The control input of the detector is connected to the output of the photodetector via the forming amplifier. The input of the photodetector is optically connected to the light-emitting diode via the obturator. The control input of the light-emitting diode is connected to the output of the control unit.
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