| 摘要 |
<p>A patient movement monitoring device including a sensor (11) for generating motion signals, a signal edge detector, an integrator (A-B), a threshold detector for generating an alarm signal, and preferably a radio transmitter for relaying the alarm signal. The sensor is in the form of an intermittent switch comprising a conductive rolling sphere (13) in a cylindrical chamber (15) having a conductive wall (17) as one electrical pole and end plates (19, 21) electrically insulated from the conductive wall and forming the other electrical pole such that movement of the device will generate intermittent electrical contacts between an end plate and the cylinder wall.</p> |
