PRODUCT IDENTIFICATION DEVICE Russian patent published in 2009 - IPC G01B21/00 G01N25/72 

FIELD: instrument engineering.

SUBSTANCE: invention refers to control and measuring equipment and can be used in engineering industry for identification of unheated metal products and heated and unheated non-metallic products. Device includes sensitive element formed by two infrared photodetectors and located between them reactive sensitive element. Reactive sensitive element is performed in a form of reaction coil located in annular groove of ferrite core open end with central hole and capacitor sensitive element installed inside of ferrite core central hole coaxially to this hole. At unheated metal product movement in relation to device sensitive element there performed is its consequential passing of the first infrared photodetector, crossing electro-magnetic field of reactive sensitive element, contacting electric field of capacitor sensitive element and passing the second infrared photodetector. Note that at device first output there performed is working out of signal with logic-1 level that carries information about identification of unheated metal product. At device second output there is voltage with logic-0 level. In case of heated or unheated non-metallic product movement the signal with logic-1 level carrying the information of their identification is worked out only at the second output of the device. Note that at device first output there is voltage with logic-0 level.

EFFECT: identification of unheated metal products and heated and unheated non-metallic products without contact with them, high safety of device operation in conditions of radiation from infrared foreign sources.

5 dwg