Ambient lighting control system

摘要

In one embodiment there is provided an ambient lighting control system 1 comprising a controller (2) and a sensor node (3a). The sensor node (3a) comprises an arrangement including a light energy collecting element (8) such as a solar cell, an energy storage element (9) and a transmitter (11). The collecting element (8) charges the storage element (9). The transmitter (11) is arranged to transmit signals to the controller (2) using energy stored by the energy storage element (9), wherein the number of signals provided during a time interval to the controller (2) is proportional to a light intensity at the light energy collecting element (8). The controller (2) may thus output a control signal C for controlling an amount of ambient lighting, wherein the control signal is based on the determined number of received signals.

主权项

1. An ambient lighting control system, comprising:
an energy storage element, a light energy collecting element arranged to charge the energy storage element, a transmitter arranged to provide, in response to becoming connected with the energy storage element, signal using energy stored by the energy storage element, switching circuitry arranged to connect the energy storage element to the transmitter in response to an energy stored by the energy storage element exceeding a threshold energy, so that a number of signals provided by the transmitter during a time interval is proportional to a light intensity at the light energy collecting element, a controller comprising a receiver arranged to receive the signal from the transmitter, and circuitry arranged to determine the number of signals received from the transmitter during the time interval, and to output a control signal based on the determined number of received signals for controlling an amount of ambient lighting.