| 摘要 |
An object identification apparatus comprises sensing means such as an infrared detector (14) which senses the presence of an object such as an intruder or vehicle in the operative field of the apparatus and generates a control signal in response to the sensed presence of an object. A signal source such as a radar module (16) is made operative in response to the control signal so as to derive a signal influenced by the object eg by detecting a reflected radar signal. A microprocessor (24) processes the derived signal for subsequent identification of the object. The identity of the object may be transmitted to a hand-held receiver with a display by a transmitter (18) or directly by connection to a data communication line. The sensing means (14) may be remote and transmit the control signal to the signal source (16). Local and remote detectors may include heat, motion, vibration, acoustic and magnetic sensors. |
