A method for operating a discharge lamp by modulating a current signal is presented. The discharge lamp is operated with at least two different frequencies. At first a probability distribution function for a first number of first frequency periods and a second number of second frequency periods is defined. Next, the first number of first frequency periods and the second number of second frequency periods are determined depending on the probability distribution function by at least one random number. The current signal is modulated by applying the first number of first frequency periods and the second number of second frequency periods to the current signal for operating the discharge lamp.

A method for operating a discharge lamp by modulating a current signal is presented. The discharge lamp is operated with at least two different frequencies. At first a probability distribution function for a first number of first frequency periods and a second number of second frequency periods is defined. Next, the first number of first frequency periods and the second number of second frequency periods are determined depending on the probability distribution function by at least one random number. The current signal is modulated by applying the first number of first frequency periods and the second number of second frequency periods to the current signal for operating the discharge lamp.

The present disclosure describes a network device that is capable of coordinating the control of light emitters. For example, the network device may receive data indicating conditions for activating the light emitters. The network device may then receive sensor data generated by various sensors, such as motion sensors, light sensors, or a timer. Using the sensor data, the network device may determine that the conditions are satisfied and, in response, cause the light emitters to activate. To activate first light emitters, the network device may transmit a signal to an electronic device that causes the first light emitters to activate. The first light emitters may be powered by the electronic device. Additionally, to activate second light emitters, the network device may transmit signals to the second light emitters that include commands to activate.

The present disclosure describes a network device that is capable of coordinating the control of light emitters. For example, the network device may receive data indicating conditions for activating the light emitters. The network device may then receive sensor data generated by various sensors, such as motion sensors, light sensors, or a timer. Using the sensor data, the network device may determine that the conditions are satisfied and, in response, cause the light emitters to activate. To activate first light emitters, the network device may transmit a signal to an electronic device that causes the first light emitters to activate. The first light emitters may be powered by the electronic device. Additionally, to activate second light emitters, the network device may transmit signals to the second light emitters that include commands to activate.

The invention describes a method for operating a discharge lamp by adapting a current signal. A distribution function is defined for gathering several time span values that define several different time spans. The several time span values are determined depending on the distribution function by one or more random numbers. The current signal is commutated at every instant of time according to an expiry of each of the several time spans. A light apparatus is provided with a control unit to perform any method.

The invention describes a method for operating a discharge lamp by adapting a current signal. A distribution function is defined for gathering several time span values that define several different time spans. The several time span values are determined depending on the distribution function by one or more random numbers. The current signal is commutated at every instant of time according to an expiry of each of the several time spans. A light apparatus is provided with a control unit to perform any method.

A method for assigning light sensors for regulating a lighting system includes switching the lighting of the lighting system into a first switching state such that a first lighting group emits light with a predetermined luminous flux, switching the lighting of the lighting system into a second switching state such that the first lighting group emits light with a reduced luminous flux by comparison with the predetermined luminous flux or emits no light, and measuring a luminance of the light reflected by a reference surface respectively assigned to the light sensors with the aid of the light sensors to determine a first measurement value in the first switching state and a second measurement value in the second switching state. The method may further include assigning a sensor to the first lighting group based on a comparison of difference values formed for each of the light sensors, and storing the assignment.

A method for assigning light sensors for regulating a lighting system includes switching the lighting of the lighting system into a first switching state such that a first lighting group emits light with a predetermined luminous flux, switching the lighting of the lighting system into a second switching state such that the first lighting group emits light with a reduced luminous flux by comparison with the predetermined luminous flux or emits no light, and measuring a luminance of the light reflected by a reference surface respectively assigned to the light sensors with the aid of the light sensors to determine a first measurement value in the first switching state and a second measurement value in the second switching state. The method may further include assigning a sensor to the first lighting group based on a comparison of difference values formed for each of the light sensors, and storing the assignment.

A stepless dimming control method of a lighting system is applicable to the situations where a light source for a lighting terminal is a fluorescent lamp and/or an LED lamp. A pulsating voltage regulating device is connected in series with a main power supply circuit of a terminal light source. A dimming control unit is configured for a fluorescent lamp electronic ballast/LED driving unit. The specific method includes: at first, fluctuating a supply voltage value at an input end of the electronic ballast/LED driving unit for a short time by the pulsating voltage regulating device, and then regulating, by the dimming control unit, an output frequency of the electronic ballast and an output current of the LED driving unit according to fluctuation parameters and also in combination with preset system settings, so as to realize dimming. The method can realize remote and stepless dimming, is applicable to the terminal light sources of both fluorescent lamps and LED lamps, has good interference resistance and relatively low system construction/improvement costs, and is extremely suitable for newly-built lighting systems and for use in upgrading existing lighting systems.

A stepless dimming control method of a lighting system is applicable to the situations where a light source for a lighting terminal is a fluorescent lamp and/or an LED lamp. A pulsating voltage regulating device is connected in series with a main power supply circuit of a terminal light source. A dimming control unit is configured for a fluorescent lamp electronic ballast/LED driving unit. The specific method includes: at first, fluctuating a supply voltage value at an input end of the electronic ballast/LED driving unit for a short time by the pulsating voltage regulating device, and then regulating, by the dimming control unit, an output frequency of the electronic ballast and an output current of the LED driving unit according to fluctuation parameters and also in combination with preset system settings, so as to realize dimming. The method can realize remote and stepless dimming, is applicable to the terminal light sources of both fluorescent lamps and LED lamps, has good interference resistance and relatively low system construction/improvement costs, and is extremely suitable for newly-built lighting systems and for use in upgrading existing lighting systems.