FIBRE-OPTIC DISPLACEMENT SENSOR Russian patent published in 2013 - IPC G01B11/02 G01D5/26 

FIELD: physics.

SUBSTANCE: device has an optical radiation source, first and second output fibre-optic guides, first and second fibre-optic guides for optical communication, an input light-guide, first and second photodetectors, a reflecting element, an optical splitter and an electronic signal processing unit. The output o the optical radiation source is connected to the input of the input fibre-optic guide. Outputs of the first and second output fibre-optic guides are connected to inputs of the corresponding first and second photodetectors. The reflecting element is attached to the displaced object on which inputs of the first and second fibre-optic guides for optical communication are directed. Outputs of the first and second fibre-optic guides for communication are connected through the optical splitter to the output of the input fibre-optic guide and to outputs of the corresponding first and second output fibre-optic guides. Outputs of the first and second photodetectors are connected to corresponding inputs of the electronic signal processing unit, which is capable of calculating displacement. The output of the signal processing unit is the output of the entire fibre-optic displacement sensor.

EFFECT: high accuracy of measuring displacement of an object.

3 cl, 3 dwg