Stroke detecting device, stroke detecting method, stroke detecting system, operating lever unit and stroke detecting system for operating lever

摘要

In order to reduce the power consumption and to reduce the number of signal lines, the four pistons 40 juxtaposed in the apparatus body 10 each have a rod portion 41, and one or two of these pistons 40 A stroke detecting device for detecting a change in the relative position of four pistons 40 when a stroke is made with respect to the apparatus main body 10, wherein each rod portion 41 is provided with a pair of rod portions 41 , And a magnet 70 is disposed so that the magnetic field changes when relatively stroking. In the apparatus main body 10, a magnetic field between the magnets 70 is detected between the adjacent magnets 70 in the apparatus main body 10 And a magnetic field detection sensor 71 for outputting an electric signal corresponding to the direction of the detected magnetic field was disposed.