DEVICE FOR IDENTIFICATION AND CONTROL OF ITEM ROTATION Russian patent published in 2009 - IPC G01B21/00 G01N25/72 

FIELD: physics, measurement.

SUBSTANCE: invention relates to inspection equipment and can be used in mechanical engineering for identification (recognition) of heated and unheated metal and non-metal items. Device comprises an inductive sensor made as an inductance coil set in the open end face annular groove of a ferrite core with a central hole, a capacitive sensor set inside the ferrite core central hole coaxially to the hole and two infrared photodetectors with the inductive and capacitive sensors being mounted between them. Inductive and capacitive sensors together with the infrared photodetectors are set in one plane along the straight line and form a device sensor. When a heated metal item is passing the device sensor following stages take place sequentially: light striking of the first infrared photodetector, crossing of the electromagnetic field of the inductive sensor, interacting with the electric field of the capacitive sensor and light striking of the second infrared photodetector. A signal with the logic "1" level informing about the identification of the heated metal item is observed at the first device output. In this case voltages with the logic "0" level are present at the second and third device outputs. In case of heated non-metal item passing a signal with the logic "1" level informing about the identification of the heated non-metal item is observed only at the second device output, and voltages with the logic "0" level are present at the first and third device outputs. In case of unheated metal or non-metal item passing by the device sensor a signal with the logic "1" level is observed only at the third device output. In this case voltages with the logic "0" level are present at the first and second device outputs.

EFFECT: ensuring contactless identification of heated metal and non-metal and unheated items.

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