Method for detecting the position of a movable element

摘要

The magnetic sensor (1) moves over a linear strip (2) or a rotating circular ring (3) with alternate permanent N and S magnetic poles (4.1,4.2). A microcontroller (5) and a counter chip (6) are connected to the sensor in parallel. A battery (7) is connected to the counter chip and the sensor. An external current source (8) is connected to the microcontroller.