| 摘要 |
A low cost, high performance method and apparatus for identifying electrical intermediate devices and measuring their position relative to an antenna is provided. The technique preferably uses electrical intermediate devices co-operating with AC energized antennae. The resulting electrical data can be used in a wide variety of user interfaces, identification systems and sensors to measure, for example, rotary position, linear position, weight, level, torque, vibration, turbidity and flow. The invention includes means for the contactless transmission of data and power to general instrumentation. |
