LED lighting system
An LED lighting system is provided for connection to a variable power source providing input power, the LED lighting system having at least one power analyzing and processing circuitry connecting to the variable power source, and being configured to identify one or more characteristics of the input power, where the characteristics are selected from amplitude, frequency and pulse width of the input power, compare one or more of the characteristics of the input power to preset control criteria either in hardware or software or both to yield a comparison result, and then control the current control circuitry according to the comparison result.
1. Plural controllers connected to an LED lighting system, each controller of the plural controllers being configured to:
provide an output to the LED lighting system;
control one or more characteristics of the output, the characteristics being selected from the group comprising voltage amplitude, power frequency, and pulse width; and
detect a change of the one or more characteristics of the output to identify a working status of the LED lighting system to synchronize a control status of the plural controllers in the LED lighting system.
2. The plural controllers of claim 1 , in which the LED lighting system comprises power control circuitry configured to detect the change of the one or more characteristics of the output to output a control signal, the control signal being applied to a control circuit to effect a change in the working status of the LED lighting system.