| 摘要 |
<p>The invention relates to a device for measuring the movement of a mobile element moving in at least one direction. The device comprises: a light source emitting a light beam; an optical member which intercepts the beam and is connected to the mobile element such as to follow the movement thereof; pixel sensors that capture the emitted beam determined by the position of the optical element in relation to the light source, said pixels being disposed such that at least some are illuminated in a manner that varies with the position of the mobile element as it moves; a comparator module that compares the values originating from the pixels of the sensors with two different thresholds such as to assign a logical value to some of said values; and a calculation module that determines the position of the mobile element from the data originating from the comparator module.</p> |
