G - Physics – 08 – B
Patent
G - Physics
08
B
340/124.4
G08B 1/08 (2006.01) G01B 11/10 (2006.01) G01V 8/20 (2006.01)
Patent
CA 1207864
A B S T R A C T A method and a device for indicating the presence of an object in a measuring zone (E), and with objects having a mea- surable cross-sectional shape, also the extent of the object along a reference line (R), makes use of lines (A, B) of ra- diation emitters and radiation receivers , located on opposite sides of the object, the receivers being fewer than the emitters. Between the emitters and the receivers is a net- work of intersecting radiation paths created in the measuring zone and an electronic unit establishes which intersec- tions (P1) of the radiation paths are screened-off by the ob- ject. The invention is applicable for the indication of the presence of objects with arbitrary cross-section when it is desired to put a lower limit for the size an indicated object shall have, and for diameter measurement, in particular in the saw mill industry.
409782
Kockumation Ab
Marks & Clerk
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