| 摘要 |
The invention relates to a method for coding remotely detected gauges (10). At least two elements (13), the characteristics thereof being changed by an external magnetic field, are provided for forming said gauge (10), said gauge (10) being exposed to a biasing magnetic field covering a detecting volume that is larger than the gauge, and the characteristics of said elements (13) changed by said magnetic field, are detected. According to the invention the elements of each gauge (10) are oriented in predetermined mutual relationships to provide an identity of the gauge determined by said relationships. The elements are exposed to a sequence of different field distributions. The local field distribution of the biasing field over the gauge is continuously determined, and the mutual relationship between the elements is determined in dependence of the orientation of each element in the local field distribution by comparing actual properties of the elements influenced by the magnetic field, and expected properties of elements arranged in predetermined relationships to each other in the local field distribution. <IMAGE> |
