G - Physics – 05 – B
Patent
G - Physics
05
B
354/25
G05B 19/4061 (2006.01) A61B 6/10 (2006.01) B66C 15/04 (2006.01) G01B 21/16 (2006.01)
Patent
CA 1193727
23 ABSTRACT: "A method for preventing collision for two mutually movable bodies and an apparatus including an arrangement for preventing collision" The invention relates to a method and a device for prevention of collision between two mutually and independently movable bodies (A, B) and thereby to prevent collision. The method consists therein that the outer contour of each body is approximated by a number of virtual subvolumes, preferably spheres (SA1, SA2), whereafter the position of the centrum point (c1, c2) of each such sphere, when the respective body assumes a zero or reference position, is stored in a fixed memory together with the radius (r1, r2) of each sphere. Repeatedly during a motion the new position of each sphere (SA1, SA2) is then determined by means of the stored positions and the output signals from position transducers associated to the bodies (A, B) and finally the distance between each sphere of one body (A) and each sphere of the second body (B) is calculated. These calculated distances indicate the risk for collision and must exceed a given threshold value. In an anti- collision system the said calculated distances may be used to generate signals, which automatically brake or stop -the motion of the bodies. The invention can be used in medical equipments, industrial process controllers, cranes or the like (Fig. 2).
421798
N.v. Philips Gloeilampenfabrieken
Van Steinburg C.e.
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