Patent Document ID: 5530347
Application ID: 08367186
Patent Status: 1

Claim One:
1. A method for reading three-dimensional information, comprising the steps of: generating a variable magnetic field in a coordinate system of a working space; placing first and second magnetometric sensors coaxially in a coordinate reading device; forming by means of the magnetometric sensors a generalized information signal E.sub..SIGMA. =e.sub.1.sup.2 +e.sub.2.sup.3 +e.sub.3.sup.2, where e.sub.1 (i=1, 2, 3) is the amplitude of signals induced in three bi-orthogonal receiver induction coils in each of the magnetometric sensors; and determining coordinates of a specific point on the coordinate reading device superposed by an operator on a point u to be measured, the specific point being hereinafter referred to as a "peak point," according to the equation u=u.sub.2 -a/b (u.sub.1 -u.sub.2), where u.sub.1 ={x.sub.1, y.sub.1, z.sub.1,} and u2={x.sub.2, y.sub.2, z.sub.2 } are the coordinates of a point within a respective sensor defined in relation to the three bi-orthogonal coils which make up each respective sensor, the defined points of the respective sensors being referred to hereinafter as sensor "middle points," a is a distance from the peak point of the coordinate reading device to the middle point of a magnetometric sensor nearest the coordinate reading device, and b is a distance between the middle points of the first and second magnetometric sensors, and further comprising the steps of: rotating a magnetic induction vector of the generated magnetic field around a zero point of the coordinate system in the working space; registering in horizontal and vertical planes, respectively, maximum amplitude values E.sub..SIGMA.MAX of the generalized information signal of the first and second magnetometric sensors and corresponding maximum turning angles .alpha..sub.1, .beta..sub.1, and .alpha..sub.2, .beta..sub.2 of magnetic induction vectors of the field; determining the coordinates of the middle points of each of the magnetometric sensors according to the following equations: EQU x=R cos .alpha. sin .beta., EQU y=R sin .alpha. sin .beta., EQU z=R cos .beta., where R=f(E.sub..SIGMA.MAX) has a predefined value; and on the basis of the results of the middle point coordinate determination, identifying coordinates of the peak point of the coordinate reading device.