| 摘要 |
A controller comprising: an output for controlling lighting device(s)to illuminate an environment; an input for receiving a signal output from a sensor of a first type and a sensor of a second type, wherein the sensor of the second type consumes more power, but provides more accurate motion detection than the sensor of the first type; and a control module configured to detect motion of objects in the environment in response to receiving at least one of the signals, and control the lighting device(s) based on detected motion of objects. The control module configured to disable the sensor of the second type, and use the sensor of the first type to detect motion of objects when higher traffic density of objects passing through the environment occurs, and use at least the sensor of the second type to detect motion of objects when lower traffic density of objects occurs. |
