Dimming Control Including an Adjustable Output Response
a dimmer control and output response technology, applied in the direction of program control, electric controller, instruments, etc., can solve the problems of non-linear response of human eye, smoothness of dimmer output for lighting control, and output of some lighting loads that are typically not substantially linear with respect to input power, so as to enhance thermal management and enhance algorithms
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example 1
Estimating Individual Load Consumption
[0089]As noted above and with reference to FIGS. 2-5, each load circuit 16 of each dimmer module / assembly 15 typically includes a voltage detector 31 and a current detector 33. In certain embodiments and also as noted above, each dimmer module / assembly 15 typically includes four load circuits 16, although the present disclosure is not limited thereto. As such, in exemplary embodiments, each dimmer module / assembly 15 typically includes four voltage detectors 31 and four current detectors 33 (e.g., one of each for each load circuit 16).
[0090]In other words, each load circuit 16 typically includes both a voltage detector 31 and a current detector 33 for its respective line feed 18 to allow for, inter alia, calculation of power consumption. As noted above, each load circuit 16 typically includes three load outputs 23 (e.g., each line feed 18 has three load outputs 23). Each load output 23 typically is in communication with a load or controlled devic...
example 2
Voltage Detector to Determine Amplitude and Zero-Crossing
[0130]As noted above and with reference to FIGS. 2-5, each load circuit 16 of each dimmer module / assembly 15 typically includes a voltage detector 31 and a current detector 33. In other words, each load circuit 16 typically includes both a voltage detector 31 and a current detector 33 for its respective line feed 18 to allow for, inter alia, calculation of power consumption. As noted above, each load circuit 16 typically includes three load outputs 23 (e.g., each line feed 18 has three load outputs 23). Each load output 23 typically is in communication with a load or controlled device 17, e.g., a dimmable light, for control purposes.
[0131]In exemplary embodiments and as shown in FIGS. 3-4, voltage detector 31 on line feed 18 of dimmer module / assembly 15 allows one to detect the amplitude of the voltage for a given line feed 18. It is also noted that it is useful to determine the zero-crossing from this same voltage detector 31...
example 3
Adjustable Output-Response Curve
[0148]As noted above, current practice provides that some new load types generally have more unusual output characteristics than in the past when controlled by a dimmer module / assembly, and the output characteristics of these and other loads may have a response that is not able to be adequately corrected for by adding simple curvature to the dimming control signal.
[0149]For example, to generally provide high quality dimming, some dimmer modules have incorporated therein a trim and / or linearization value. The trim value typically allows the dimming range to be adjusted so that the dimming signal stays out of areas near the high and / or low end (e.g., areas that typically do not change the output). If the lighting load normally does not turn on until the control signal level is increased beyond about 10%, then the trim value can generally be set to about 10% on the low end. This typically causes the control signal to start from about 10% as the lowest di...
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