DEVICE FOR MEASURING PARAMETERS OF PHYSICAL FIELDS Russian patent published in 2017 - IPC G01K11/32 

FIELD: measuring equipment.

SUBSTANCE: device relates to optical measurements, in particular to devices for measuring parameters of physical fields (temperature, pressure, tension, etc.) using optical sensors. Disclosed device for measuring parameters of physical fields includes series-connected four-frequency signal source, first fibre-optic cable, optical sensor, second fibre-optic cable; as well as first photodetector, first amplitude detector, second amplitude detector, controller for determining parameter of physical field. First amplitude detector is connected to first input of controller for determining parameter of physical field, and second amplitude detector is connected to its second input. Device includes an optical signal splitter, two optical selective filters, second photodetector, two band-pass filters, wherein output of second fibre-optic cable is connected to optical signal splitter, and first output of optical signal splitter is connected through series-connected first selective filter, first photodetector, first band-pass filter to first amplitude detector, and second output of optical signal through splitter is connected through series-connected second optical selective filter, second photodetector, second band-pass filter to second amplitude detector.

EFFECT: technical result is higher accuracy of measurements and simplified design.

4 cl, 2 dwg