Registers – Records – Particular code pattern
Patent
1994-03-02
1995-11-07
Hajec, Donald
Registers
Records
Particular code pattern
235491, 235487, 378 51, 209588, 209589, 209583, G06K 1906
Patent
active
054649730
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a device for the identification of an object, possibly for selecting that object from among other objects, of the type comprising an insert incorporated into the object and exhibiting shape parameters forming a code for the identification of the object and detectable with the assistance of a detection means such as a beam of X-rays or ultrasounds or a magnetic field and an emitter of the detection means as well as a receiver of the detection means after interaction with the insert.
One already knows devices of this type. The shape parameters of the insert are constituted by a portion of a particular configuration such as a notch possibly of complex shape or a surface carrying a bar-code for example.
Inserts of this type have proved to be not usable in some application cases. Thus for providing complex structures such as automotive vehicles from parts prefabricated with the assistance of robots and of automatic mounting production lines it is necessary to be able to select each part from among a great number of other parts. To solve this problem, one has contemplated to incorporate into these parts identification inserts. Now one has become aware of the inconvenience of the inserts used heretofore which resides in the fact that the identification safety of the parts to be selected is very low in view of the variation of the orientation of the insert in the beam or field of the detection means. To the extent where it is too expensive and practically impossible to always provide for the same orientation of the insert, this mode besides very effective of identification is not applicable in all the cases of utilization where that orientation invariable from one part to another one may not be strictly provided for.
OBJECTS AND SUMMARY OF THE INVENTION
The present invention has as its object to propose a device for the identification of an object by means of an insert, of the type described hereinabove, which is applicable to cases of utilization excluded until now.
To reach that goal the device according to the invention is characterized in that the insert exhibits a spherical shape comprising several concentric spherical elements which are made from materials having a transparency to the detection means, different from one element to another one and increasing from the center to the periphery of the inserts, the shape parameters being formed of the diameters of the concentric elements.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be better understood and further objects, characteristics, details and advantages thereof will appear more clearly in the course of the explanatory description which will follow, made with reference to the attached diagrammatic drawings given by way of example only illustrating several embodiments of the invention and in which:
FIG. 1 is a view in section of an insert of spherical shape according to the invention which passes through the center of that insert;
FIG. 2 is a diagrammatic perspective view with parts broken away of an identification device according to the invention involving the use of an insert according to FIG. 1 with the background of an example of utilization.
DETAILED DESCRIPTION OF THE INVENTION
As FIG. 1 shows it, an insert according to the invention exhibits a spherical shape and consists of a plurality of concentric spherical elements. In the example of FIG. 1, the insert 1 comprises three concentric elements bearing the reference numerals 2, 3 and 4 in the direction from the center to the periphery. The different concentric elements are made from different materials selected so that the transparency to the detection means of the intermediate element 3 is greater than that of the central element 2 and smaller than that of the radially external element 4. The structure of the insert 1 is characterized by the different diameters d1, d2 and d3 of these component elements 2 to 4.
As shown on FIG. 2 to identify the object such as a building part 6 or 7, one incorporates the insert 1 into the part. A
REFERENCES:
patent: 2983354 (1961-05-01), Ember et al.
patent: 4136778 (1979-01-01), Wortman et al.
patent: 4354387 (1982-10-01), Jones et al.
patent: 5301238 (1994-04-01), Apter et al.
Hajec Donald
Lee Michael G.
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