Design and implementation of a PIR luminaire with zero standby power using a photovoltaic array in enough daylight

This paper further enhances the previous research into reducing the standby power consumption of a PIR luminaire. Generally, although a PIR luminaire will turn on when motion is detected and turn off when the motion is no longer present, the luminaire still consumes 1 to 3 W of power when the lamp is off and plugged in. In this design the luminaire consumes 1 mW when the light is turned off. The power consumption is lower than that in the previous design. This design is not only easy to set up but also inexpensive. A more effective circuit design is used to reduce the power consumption. Furthermore, a photovoltaic array is included in this design to reduce the consumption from the local electric power company. The standby power consumption of the luminaire is 1 mW in a darkroom and less than 1 mW in a non-darkroom. When the illumination intensity is greater than 150 lx, the consumption from the local electric power company is 0 W¹.