LIGHTING APPARATUS HAVING COMPLEX SENSOR AND INTERWORKING TYPE LIGHTING SYSTEM

摘要

Disclosed is a lighting apparatus having a complex sensor. The apparatus includes a short distance motion sensor to sense an object at a short distance, a long distance motion sensor to sense an object at a long distance, a signal amplifier to amplify signals from the sensors, a lamp to be adjustable in brightness in multiple stages, a timer to count a dark adaptation time, and a controller. The controller controls the lamp to a first brightness upon receiving a signal from the long distance motion sensor and to a second brightness higher than the first brightness upon receiving a signal from the short distance motion sensor and controls the timer to count the dark adaptation time at the second brightness, thereby reducing the brightness of the lamp by an illuminance within a dark adaptation threshold value set in the controller whenever the timer generates a counting signal.

主权项

1. A lighting system including a plurality of lighting apparatuses having complex sensors, each lighting apparatus having the complex sensor comprising:
a short distance motion sensor configured to sense an object located at a short distance; a long distance motion sensor configured to sense an object located at a long distance; a signal amplifier configured to amplify sensing signals received from the short distance motion sensor and the long distance motion sensor; a lamp configured to be adjustable in brightness in multiple preset stages; a timer configured to count a dark adaptation time; and a controller storing a preset dark adaptation threshold value, wherein the controller controls the lamp to a first brightness upon receiving a sensing signal from the long distance motion sensor, controls the lamp to a second brightness greater than the first brightness upon receiving a sensing signal from the short distance motion sensor, and controls the timer to count the dark adaptation time at the second brightness, thereby controlling the lamp to be reduced in brightness by an illuminance within the preset dark adaptation threshold value whenever the timer generates a counting signal, and wherein, while the short distance motion sensor included in a corresponding one of the lighting apparatuses having the complex sensors senses an object to cause the lamp to emit light at the second brightness, the long distance motion sensor included in another lighting apparatus having the complex sensor in proximity to the corresponding lighting apparatus senses the object to cause the lamp to emit light at the first brightness.