| 摘要 |
<p>To enhance a movement detector for detecting the movement of a body breathing or heartbeat activity comprising a Doppler sensor (11) with a microwave oscillator (2) and at least one mixer (14) in such a manner, that the detector is on the one hand efficient and save with respect to a baby breathing or heartbeat detection and on the other hand a low cost solution, the sensor (11) is performed as sensor unit (13) with a volume less than 100 cm3 and a sending energy lower than 10 mW.</p> |
