Opple Lighting Co., Ltd.

Ademco Inc.

Wei Wen

Jian Wang

Liang Wang

Yang Hu

Jie He

Zhixian Zhou

Tianhang Zheng

Wanghui Yan

Juan Bian

Yan Chen

Yun Gang Li

Erica Lin

The present disclosure provides a timer based protection circuit and a lighting device. The protection circuit is configured to acquire a working current or an output voltage of a protected object, and compare a voltage value converted from a current value of the working current or a voltage value of the acquired output voltage with a predetermined threshold. When the voltage value converted from the current value of the working current or the voltage value of the acquired output voltage is greater than or equal to the predetermined threshold, the protection circuit resets the timer to cause the timer to output a low voltage level; and when the voltage value converted from the current value of the working current or the voltage value of the acquired output voltage is less than the predetermined threshold, the timer works normally.

Timer based protection circuit and lighting device

The present disclosure provides an analog filament impedance circuit, an LED lamp tube and an LED lighting system, the analog filament impedance circuit having a pole frequency and a zero frequency, where: the pole frequency is less than the zero frequency; an equivalent impedance value of the analog filament impedance circuit remains unchanged when an input frequency is less than the pole frequency, and is a first equivalent impedance value; an equivalent impedance value of the analog filament impedance circuit decreases as the input frequency increases when the input frequency is greater than the pole frequency and less than the zero frequency; an equivalent impedance value of the analog filament impedance circuit remains unchanged when the input frequency is greater than the zero frequency, and is a second equivalent impedance value; and the first equivalent impedance value is greater than the second equivalent impedance value.

Analog filament impedance circuit, LED lamp tube and LED lighting system

The present disclosure provides a light-emitting diode (LED) drive circuit and an LED lamp. The LED drive circuit includes: a feedback control circuit and a load impedance increasing circuit, where the feedback control circuit acquires the operating current of an LED, compares the operating current with a default threshold, drives the load impedance increasing circuit to operate when the operating current of the LED is greater than or equal to the threshold, and allows the load impedance increasing circuit not to operate when the operating current of the LED is less than the threshold; and the load equivalent impedance of the LED drive circuit is increased when the load impedance increasing circuit operates.

LED drive circuit and LED lamp

The present disclosure provides an electronic ballast-based device for controlling an electronic control circuit and a lighting lamp. The device includes an electronic ballast and an electronic control circuit which are connected with each other, the electronic control circuit including a filament analog circuit, a rectifier bridge circuit, at least two frequency detection circuits connected in parallel, an interface logic circuit and a switching circuit; the electronic ballast is connected with the switch circuit sequentially through the filament analog circuit and the rectifier bridge circuit; the at least two frequency detection circuits connected in parallel have one end connected between the filament analog circuit and the rectifier bridge circuit, or connected between the electronic ballast and the filament analog circuit, and another end connected with the interface logic circuit; and the interface logic circuit is connected with the switching circuit.

Electronic ballast-based device for controlling electronic control circuit and lighting lamp

Internet protocol camera

Embodiments of the present disclosure disclose an illuminating device, a control method thereof and a control system thereof, which can acquire the color of an illuminated object and adjust irradiating light emitted by the illuminating device according to the color of the object. The control method includes switching on the illuminating device to project initial detection light to an illuminated object, acquiring initial reflected light of the illuminated object, obtaining an initial color of the illuminated object according to the initial reflected light, switching off the illuminating device projecting the initial detection light to the illuminated object, acquiring an environment color of an environment provided with the illuminating device, correcting the initial color according to the environment color to obtain a corrected color, acquiring target irradiating light according to the corrected color, and controlling the illuminating device to project the target irradiating light to the illuminated object.

Illuminating device, control method thereof and control system thereof

Embodiments of the present disclosure disclose an illuminating device, a control method thereof and a control system thereof, which can precisely adjust the color of irradiating light according to the color of an object. In the embodiment of the present disclosure, a next detection light is obtained according to reflected light of a previous detection light. When the color difference of reflected light of the previous detection light and the next detection light is less than a preset color difference range, the illuminating device is controlled to project the next detection light to an illuminated object.

The present disclosure discloses a smart lighting system and a control method for the smart lighting system. The smart lighting system includes: an environment acquisition module being configured to acquire environment information and at least one lighting module, and where the environment acquisition module includes: a color detection unit configured to acquire color information in an environment; an auxiliary detection unit configured to acquire auxiliary information in the environment, wherein the environment information is determined by using the color information and/or the auxiliary information; an operational unit and a control unit configured to determine a control signal according to the environment information; and where the at least one lighting module includes: a driving unit configured to determine a driving signal according to the control signal; and at least one light source configured to receive the driving signal and emit light according to the driving signal.

Growing community of inventors

Shanghai, China

Wei Wen