DEVICE FOR MEASURING WEAR AMOUNT AND TEMPERATURE OF PRODUCT AT FRICTION (VERSIONS) Russian patent published in 2017 - IPC G01K11/32 G01N3/56 

FIELD: physics.

SUBSTANCE: device for measuring the wear amount and temperature of a product at friction according to its first version and the second version contains, at least, two successively formed intra-fiber optical sensors of the wear amount and temperature of the product at friction based on Bragg gratings with a portion of the measuring fiber-optic lightguide between them, not occupied by the Bragg grating, equal in length to, at least, one of its periods. In addition, the device comprises, for example, at least, two consecutive intra-fiber optical sensors of the wear amount and temperature of the product at friction made on the basis of a Bragg grating with a phase π-shift; a Fabry-Perot interferometer built using the Bragg gratings; Bragg gratings tuned to one working wavelength; Bragg gratings tuned to different working wavelengths. The device for measuring the wear amount and temperature of the product at friction according to its second version, in contrast to its first version, contains an additional introduced splitter installed behind the circulator into the rupture of the measuring fiber-optic lightguide. To the first output of the splitter, the first segment and the second end of the measuring fiber-optic lightguide are sequentially connected, and to the second output of the splitter - the second segment of the measuring fiber-optic lightguide intended for placement in the product. At the second end of the measuring fiber-optic lightguide intended for placement in the product, at least, one fiber-optic sensor for the wear amount and temperature of the product at friction based on the Bragg grating is formed.

EFFECT: increasing the range of continuous measurement of the wear amount without significant complication of the device.

8 cl, 3 dwg