| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a load control system including a plurality of sensor units which are laid in line, capable of performing a favorable control even when many persons exist within the sensing area. <P>SOLUTION: The load control system is equipped with sensor units 1 for sensing any person existing within a predetermined area and emit a human body sensing pulse signal, a control unit 2 which starts a timer when the human body sensing pulse signal is fed and also emits a control signal for performing the On control and emits the control signal for performing the Off control when the next human body sensing pulse signal is not fed for a specified period after starting, a relay unit 3 to perform opening and closing of an electric line in conformity to the control signal, and a load 4 to be turned on and off in compliance with the opening and closing of the electric line, wherein a plurality of such sensor units 1 are provided, and the control unit 2 is furnished with an input port 24 where the sensor units are connected parallel, and resetting of the timer is conducted in accordance with the voltage level of the human body sensing pulse signal fed to the input port. <P>COPYRIGHT: (C)2003,JPO</p> |
