| 摘要 |
<p>The invention comprises a Radio Frequency (RF) motion detector that once installed goes unnoticed, reinforcing its functionality as a security element. This motion detector features several stages, such as the Radio Frequency detection one, the filtering and conditioning ones (2-2'), the amplification one, prior to the digital signal processing (4) by means of a digital signal microcontroller/processor as well as the analog/digital conversion one (6-6') and the access for the communications by means of a KNX bus. A firmware (7) is fitted in the device for the analysis of the received Radio Frequency signals and the communication ones with other devices via the communication access (5) through a KNX bus. Therefore, whenever the device detects any kind of motion sends a signal in the form of a telegram addressed to a recipient in the KNX Group.</p> |
