Systems for locating mobile objects by inductive radio
First Claim
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1. A system for generating a signal representing the location of a mobile object along a predetermined route, said signal being in the form of a succession of first and second code values, said system comprising:
- a pair of twisted inductive radio lines installed along said predetermined route, said lines crossing one another at intervals with each interval having one of two predetermined lengths p1 and p2 ;
sensing means mounted on said mobile object for sensing the lengths of a plurality of successive ones of said intervals as said mobile object travels along said predetermined route; and
signal generating means responsive to said sensing means for generating a first code value when an interval length p1 is detected and for generating a second code value when an interval of length p2 is detected.
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Abstract
An object moves along a predetermined route adjacent a pair of inductive radio lines crossed at two predetermined intervals P1 and P2. A sensing device on the object senses the intervals and enables generation of an object position signal having a first code value when the interval P1 is sensed and a second code value when the interval P2 is sensed.
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Citations
9 Claims
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1. A system for generating a signal representing the location of a mobile object along a predetermined route, said signal being in the form of a succession of first and second code values, said system comprising:
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a pair of twisted inductive radio lines installed along said predetermined route, said lines crossing one another at intervals with each interval having one of two predetermined lengths p1 and p2 ; sensing means mounted on said mobile object for sensing the lengths of a plurality of successive ones of said intervals as said mobile object travels along said predetermined route; and signal generating means responsive to said sensing means for generating a first code value when an interval length p1 is detected and for generating a second code value when an interval of length p2 is detected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification