| 摘要 |
<p>The sensor device has radio frequency (RF) receiving antennas (14a,16a) that are associated with mixer units connected to signal processing unit (18). The change in distance signal of detection object (20) is in correspondence with angle position signal of detection object. The operation mode of lamp device (10) is altered in response to signals obtained from signal processing unit, if spacing and distance signals lie between predetermined maximum and minimum distance values and if angle alteration signal lies between predetermined maximum and minimum angular speed.</p> |
