| 摘要 |
<p>PURPOSE:To precisely detect the entrance and exit of an object for a specified region by combining a passive sensor for detecting the object which has entered a wide region and an active sensor for detecting the entrance of the object. CONSTITUTION:A human organism 6 positioned in a wide region is detected by a passive sensor 1 (pyroelectric sensor 11) and further the organism 6 who has entered a narrow region therein by an active sensor 2 (LED2, SPD23). In the case where the organism 6 enters the wide region and comes in the narrow region within a specified time, a detection signal 9 is output as soon as the organism 6 enters the specified region by the use of a signal processing means 3, for instance, the operation part of ATM makes its operation possible. As long as the detection signal S4 is output by the use of a sensor 2, a signal S9 is continued to output by the use of the processing means 3 even after a detection signal S1 from the sensor 1 is lost, and the output of the signal S9 stops as soon as the organism 6 exits when the signal S4 is lost. When a signal S1 is output by the use of the sensor 1, drive power is supplied to another sensor 2 with the use of the processing means 3.</p> |
