Personalized lighting control

摘要

A lighting system for initiating change in a mammal's circadian or well-being state includes a computational unit configured to receive state information regarding the mammal's circadian or well-being state, and operational information from a light sensor with spectral and luminosity sensitivity. The computational unit is configured to compare the operational information with the state information, and on the basis of this comparison, the computational unit outputs a control signal to a light control unit which, in turn, adjusts a controllable light source to vary its light output so as to initiate the desired change in the mammal's circadian or well-being state.

主权项

1. A method for providing an output control parameter associated with a specific person for controlling a light output of a lamp, the light output being characterized by a color temperature, and the control parameter comprising a color temperature control parameter for controlling the color temperature of the light output, the method comprising:
(a) providing a current time parameter representing the current local time of the day; (b) providing a type parameter representing one of a first person type and a second person type; (c) providing a gender parameter representing one of a male person and a female person; and (d) in a first alternative providing a first function comprising:
(i) as an input, a first variable representing the local time, a second variable representing the type parameter, and a third variable representing the gender parameter; and(ii) a range of color temperature control parameters as an output;the first function defining a first peak and a second peak of the range of color temperature control parameters with respect to the first variable, the first peak having a first maximum at a first time of the day and a first full width at half maximum of at least 30 minutes, the second peak having a second maximum at a second time of the day that is after the first time of the day and a second full width at half maximum of at least 30 minutes;the first function providing at a fixed value of the third variable an output representing a lower color temperature at the first time of the day for the first type of person than for the second type of person, and an output representing a higher color temperature at the second time of the day for the first type of person than for the second type of person, andthe first function further providing at a fixed value of the second variable an output representing a lower color temperature at the first time of the day and the second time of the day for a male person than for a female person; and (e) in a second alternative providing a first function representing:
T(t,x,y)=(T0(t)−Tb)·ctype(x)·cgender(y)+Tb, where t is a first variable representing the local time, x is a second variable representing the type parameter, and y is a third variable representing the gender parameter;
wherein the first, second and third variables constitute an input for the first function,T(t, x, y) is the output of the first function and covers a range of temperature control parameters, T0(t) is a first base function of the first variable t and defines a first peak and a second peak of the range of color temperature control, the first peak having a first maximum at a first time of the day and a first full width at half maximum of at least 30 minutes, the second peak having a second maximum at a second time of the day that is after the first time of the day and a second full width at half maximum of at least 30 minutes, ctype(x) is a second base function of the second variable x and provides an output corresponding to a lower color temperature at the first time of the day for the first type of person than for the second type of person, and an output representing a higher color temperature at the second time of the day for the first type of person than for the second type of person, cgender(y) is a third base function of the third variable y and provides an output corresponding to a lower color temperature at the first time of the day and the second time of the day for a male person than for a female person, and Tb is a color temperature base level that is a positive constant for all values of the first, second, and third variables; and (f) in both the first and the second alternatives, inputting into the first function the current time parameter as the first variable, the type parameter as the second variable, and the gender parameter as the third variable to yield the color temperature control parameter as the output from the first function.