258results about "Electric lighting sources" patented technology

The application provides a synergic dynamic lighting method and its adjustable light direct current incandescent lamp, relates to the field of vision and lighting, and aims to ensure that light is uniform and dynamic in the field of vision; the color temperature is strictly imitated candlelight; the core is direct current adjustable light incandescent lamp technology; and the light in the field of vision is mostly non-uniform and static in the present night desktop lighting, and the light quality is never as good as direct current incandescent lamp; this easily leads to eye accommodation laxity and induces axial myopia; the application mainly comprises two direct current incandescent lamp platforms, one of which illuminates a book, and the other of which illuminates a white wall in front of the eyes; the light intensity of each is adjustable to ensure the uniformity of light in the field of vision, so that the fovea and peripheral rod cells of the retina are stimulated at the same time; the two lamps can also realize the synchronous adjustment of illumination according to the program, thereby guiding the dynamic focusing of the eyes and realizing dynamic lighting; the dynamic also reflects the low color temperature mammal lighting imitating candlelight according to the biological clock and the anti-alzheimer's lighting with 40Hz deep frequency flash.

The invention relates to the technical field of plasma discharge control, in particular to a hot cathode filament discharge control method and system and controllable nuclear fusion equipment, and the method comprises the steps: obtaining a target arc current value and target discharge time of a hot cathode filament, and calculating a voltage feed-forward value of the hot cathode filament according to the target arc current value and the target discharge time; in response to a discharge control instruction of the thermionic cathode filament, calculating a voltage feedback value of the thermionic cathode filament according to the actual arc current value and the target arc current value of the thermionic cathode filament; and controlling the hot cathode filament to discharge according to the voltage feed-forward value and the voltage feedback value. Therefore, the problems that when the hot cathode filament discharges, due to the fact that the thermal inertia of the filament is large and a control method in the related technology is difficult to adapt to parameter changes under different discharge conditions, plasma discharge response is slow, and adaptability is poor are solved.

A load control device may include a closed-loop gate drive circuit coupled to a semiconductor switch and configured to render the semiconductor switch conductive or non-conductive at a control time during half-cycles of an AC mains line voltage. The gate drive circuit may limit a magnitude of the load current conducted through the semiconductor switch to a maximum current limit. The load control device may include a control circuit that is configured to set the maximum current limit to a second magnitude for a period of time following a control time of the semiconductor switch during a conduction period of a half-cycle of the AC mains line voltage, and set the maximum current limit to a first magnitude after the expiration of the period of time during the conduction period of the half-cycle of the AC mains line voltage.

A control device configured for use in a load control system to control one or more electrical loads may comprise an actuation member having a front surface defining a touch sensitive surface configured to detect a point actuation along at least a portion of the front surface, a touch sensitive circuit, and a control circuit. The touch sensitive device may comprise one or more receiving capacitive touch pads located behind the actuation member and arranged in a linear array adjacent to the touch sensitive surface. The control circuit may be configured to operate using different filtering techniques based on the state / mode of the control device and / or based on whether the positions of point actuations by a user along the touch sensitive surface indicate a fine tune or gross adjustment by the user. For example, the control circuit may generate an output signal using light / no filtering or using heavy filtering.

The techniques described herein relate to systems, apparatus, articles of manufacture, and methods for light generation. An example apparatus for ultraviolet (UV) radiation generation includes a microwave cavity comprising an electrodeless UV bulb, the electrodeless UV bulb comprising a bulb fill capable of emitting UV light, a synthesizer configured to generate a microwave signal, and a solid-state amplifier configured to amplify the microwave signal to generate an amplified microwave signal for igniting the bulb fill to emit UV light.

A system and method monitors a lamp assembly. Image data related to an object of interest is captured with an optical sensor disposed near the object of interest related to the lamp assembly. The image data from the optical sensor is provided to a processing circuit of a lamp monitoring and control device. The image data from the processing circuit can be transmitted to a base station using a transmit unit.

A train cabin lighting system for managing the fatigue of a train operator comprises a cabin interior configured to accommodate the operator during operation. The system includes a light-emitting apparatus arranged within the cabin, which comprises at least one light source capable of emitting light at different wavelengths. A control unit is operatively connected to the light-emitting apparatus, and it is configured to control the emission of light based on predefined protocols. The system is characterized by the light-emitting apparatus being configured to emit blue light at a wavelength between 460 nm and 480 nm. Additionally, an adaptive lighting control system dynamically adjusts one or more of the intensity, spectral composition, and emission angle of the light based on real-time feedback from environmental and operator-specific conditions, thereby managing the operator's fatigue.

The application discloses a kind of LEC cold light source application methods combined with IMD, it is related to cold light source application technical field, including the following contents, S1, cold light sheet production: polyester acrylic resin, modified polyurethane, hydroxyethyl acrylate, photosensitizer, auxiliary agent, filler, solvent slurry, dispersing agent and curing agent;S2, dielectric layer preparation;S3, circuit application;S4, correction is carried out: correction circuit carries out power factor correction to filtered mains signal, the pin of correction circuit is MOS tube drive pin, controls MOS tube switch and changes output voltage.The application compared with initial EL cold light sheet, with ultrathin, working state is not heated, light is uniform, good shock resistance, still can emit light after cutting, color is rich and recognition degree is high, easy to use, low power consumption, easy to manufacture, so that it has ultralight, ultrathin, light soft, no ultraviolet, color is various, long life, no heat, strong light and shade color adjusting ability.

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.

Provided are a fluid treatment device and a lighting circuit that enable an ultraviolet light irradiation unit to stably light up regardless of a treatment state of fluid. The fluid treatment device includes: a lighting circuit that includes a DC power supply, a transformer including a primary winding and a secondary winding, and a switching element, the lighting circuit being configured to cause the secondary winding of the transformer to generate electromotive force in accordance with switching of the switching element between an ON state and an OFF state; an ultraviolet light irradiation unit that includes a first electrode disposed in a light-emitting tube in which a light-emitting gas is sealed, and a second electrode disposed apart from the light-emitting tube, a space into which a fluid to be treated flows being interposed between the first electrode and the second electrode, the ultraviolet light irradiation unit being connected to the secondary winding of the transformer; a detection unit that detects an electric conductivity of the fluid; and a controller that controls a frequency at which the switching element is switched between the ON state and the OFF state on the basis of the electric conductivity of the fluid that has been detected by the detection unit, or a parameter relating to the electric conductivity of the fluid.

The invention provides a high-voltage starting device for a high-pressure gas discharge light source, and the device comprises a power access unit which is used for accessing an external AC power supply; the power supply protection unit automatically cuts off the power supply when the circuit is short-circuited, overloaded or abnormal in voltage; the energy storage resonance unit is electrically connected with the power supply protection unit and comprises an energy storage capacitor and a ballast inductor, and the energy storage capacitor and the ballast inductor form a series resonance circuit; the trigger control unit is connected with the energy storage resonance unit in parallel and comprises a gas discharge trigger tube, and the gas discharge trigger tube is conducted when the voltage at the two ends of the energy storage capacitor reaches a breakdown threshold value; the circulation control unit is connected between the energy storage resonance unit and the high-pressure gas discharge light source in series and comprises a double-metal heat piece switch, and the double-metal heat piece switch is bent and disconnected due to the heat effect when high-voltage pulses flow through and then a loop is closed after cooling and resetting. And the high-voltage output unit is connected with the circulating control unit and the high-voltage gas discharge light source. The starting time of the high-pressure gas discharge light source can be shortened, and the test preparation time is shortened.

The invention discloses an excimer lamp voltage closed-loop control method, device and equipment and a storage medium. The core comprises a current peak detection unit, a peak voltage observer and a closed-loop control unit. Wherein the current peak value detection unit is used for acquiring a current peak value flowing through the excimer lamp in a working period; the peak voltage observer estimates the peak voltage of the excimer lamp in the period in real time to realize accurate observation of the voltage state; and the closed-loop control unit realizes indifference tracking control of the given peak voltage and the estimated peak voltage through a control algorithm according to the given peak voltage and the estimated peak voltage of the excimer lamp, and dynamically adjusts output. The closed-loop control method can effectively restrain interference of parameter changes such as external environment temperature and load fluctuation on peak voltage of the excimer lamp, discharge efficiency reduction caused by voltage deviation is avoided, it is ensured that the excimer lamp is always stably in a high-efficiency discharge state in the full work period, and equipment operation reliability and energy utilization efficiency are improved.

To provide a lighting device for discharge lamp capable of suppressing an out-of-resonance state even in a case where a change of an environmental temperature is considerable, and an irradiation device for vehicle.SOLUTION: A lighting device for discharge lamp applies a drive voltage in a predetermined operation frequency to a discharge lamp. The lighting device for discharge lamp comprises: a switching output circuit which includes a switching element and converts a DC voltage into an AC voltage in the operation frequency; a control circuit where the primary-side coil is electrically connected with the switching output circuit via a capacitor for resonance and the secondary-side coil is electrically connected with a transformer electrically connected with the discharge lamp and the switching output circuit and which generates a drive signal of the switching element; and an operation frequency setting circuit which is electrically connected with the control circuit and includes a resistor and a temperature sensitive element connected in series with the resistor. A resistance value of the temperature sensitive element is reduced when a temperature rises. The control circuit sets the operation frequency based on a value of combined resistance of the resistor and the temperature sensitive element.SELECTED DRAWING: Figure 3

To prevent deterioration and mechanical destruction of a membrane in a light source by suppressing electromigration in the light source.SOLUTION: A light-source driving device 80A includes a light source 2, a power source 800, and an NMOSFET 801, 802, 803, and 804 as a switching element. The light source 2 has a heater layer containing metal, and emits infrared rays based on a power supply voltage applied to the heater layer. The power supply 800 outputs a voltage V as the power supply voltage to the light source 2. The NMOSFET 801 to 804 switches a path of current flowing from the power source 800 to the light sources 2 and alternately drives a direction of the current flowing to the light sources 2.SELECTED DRAWING: Figure 7

An aircraft (2), having a passenger cabin (4) with light sources (6a-h), contains a light module (12) with outputs (14a-e) for the light sources (6a-h), a virtual output field (16) of field locations (Oa-e) over time (t) and location-time control specifications (20a-e), in order to assign light values (LW) to the field locations (Oa-e) and times (t), wherein each of the outputs (14a-e) is assigned a field location (Oa-e) in the output field (16), wherein the outputs (14a-e) control the light sources (6a-h) to emit light (10) according to the light value (LW) at the actual time (ta) at the field location (Oa-e), wherein the control specifications (20a-e) include: a colour value (Fa-e) for the light value (LW), a location interval (OIa-e), and a time interval (ZIa-e), during which, in the location interval (OIa-e), the color values (Fa-e) are admixed to the light values (LW) of the field locations (OA-e) located therein, starting at zero and completely admixed at the end. In a method for operating the aircraft (2), the light sources (6a-h) are connected to the outputs (14a-e), the control specifications (20a-e) are selected in a future time (t) of the operation of the aircraft (2), and the light module (12) is operated at least during the operation of the aircraft (2) such that the light sources (6a-h) emit light (10) according to the associated light values (LW).

A gas sensor (100) is described, which comprises a gas absorption cell (6), configured to house a gas to be detected, an incandescent light bulb (1) comprising a glass bulb (2) and a filament (3) enclosed in the glass bulb (2). The gas sensor (100) also comprises a first detector (4), configured to detect radiation in a first wavelength range of 1-5 um, and a control unit (7), configured to provide a drive current through the filament (3) of the incandescent light bulb (1) during operation of the gas sensor (100). The gas sensor comprises a second detector (5), configured to detect radiation in a second wavelength range of 6-15 µm radiation. The second detector (5) is arranged such that the second detector (5) is illuminated by radiation from the incandescent light bulb (1) during operation of the gas sensor (100).

The utility model discloses an output power self-adaptive control circuit of beauty equipment, which belongs to the technical field of beauty equipment, and comprises a main control chip, a strong pulse light driving module, a temperature detection module, a voltage and current detection module and a touch detection module, and the main control chip adopts a microcontroller; the intense pulse light driving module is connected with a PC2 pin of the main control chip, and the intense pulse light driving module is used for driving and controlling the lightening of the xenon lamp; the temperature detection module is at least connected with PD3, PB1 and PB3 pins of the main control chip, and the temperature detection module is used for sensing temperature; the voltage and current detection module is connected with a PB4 pin and a PB5 pin of the main control chip, and the voltage and current detection module is used for detecting peak voltage and peak current; the touch detection module is at least connected with a PC4 pin, a PC5 pin and a PC6 pin of the main control chip, and the touch detection module is used for detecting the contact condition with the skin.

In described examples of a method (400) of controlling an illumination device by an output signal of a DC-DC converter, the output signal is controlled by a PWM signal. The method (400) includes receiving (405) a feedback signal corresponding to variation in the output signal with respect to a predetermined output signal, and determining (410) a target duty cycle of the PWM signal based on the feedback signal. The PWM signal of the target duty cycle is capable of enabling the DC-DC converter to generate the predetermined output signal. The method (400) includes providing (415) the PWM signal of an effective duty cycle equal to the target duty cycle over N switching pulses of the PWM signal to the DC-DC converter. The method (400) provides (415) the PWM signal by providing (420) M switching pulses of a first PWM signal of a first duty cycle, and by providing (425) N-M switching pulses of a second PWM signal of a second duty cycle.

The utility model discloses a ballast cabinet for a photocatalytic reactor, which comprises a cabinet body, the surface of the cabinet body is provided with a ventilation assembly for improving the heat dissipation effect of the ballast cabinet, and the inner wall of the cabinet body is provided with a convenient assembly for improving the disassembly and maintenance efficiency. A support assembly used for providing stability for the ballast is installed on the inner wall of the convenient assembly. According to the utility model, through the synergistic effect of all structures of the convenient assembly and the support assembly, when the ballast needs to be maintained or replaced, the ballast can be quickly disassembled easily through simple operations such as opening the anti-falling cover and unfastening the hook; therefore, the maintenance time is greatly shortened, and the production efficiency is improved; through the synergistic effect of all structures of the support assembly, stable and reliable support is provided for ballasts, meanwhile, adjustment can be conducted according to ballasts of different models and sizes, and therefore the universality of the ballast cabinet is improved.

A control signal transmission method for a lamp system includes: acquiring signal states of a red-line original control signal, a green-line original control signal and a blue-line original control signal periodically; outputting, within an output period, a red-line conversion signal, a green-line conversion signal and a blue-line conversion signal sequentially according to the signal states of the original control signals; performing voltage stabilization on the conversion signals to obtain a red-line regulation signal, a green-line regulation signal and a blue-line regulation signal at different levels; outputting a combined control signal consisted of the red-line regulation signal, the green-line regulation signal and the blue-line regulation signal; receiving and detecting the combined control signal to obtain the red-line regulation signal, the green-line regulation signal and the blue-line regulation signal; and outputting the red-line regulation signal, the green-line regulation signal and the blue-line regulation signal to lamps of the lamp system.

The present invention discloses a pulse xenon lamp pre-ignition circuit. The pulse xenon lamp pre-ignition circuit provided by the present invention first performs a primary voltage boost on the xenon lamp high-voltage DC power supply through a voltage boost circuit, and then performs a secondary voltage boost on the xenon lamp high-voltage DC power supply through a voltage doubler circuit. At the same time, the voltage doubler circuit can also continuously maintain a stable output of high voltage during the process of achieving the secondary voltage boost. In this way, the pre-ignition high-voltage module is enabled to output high voltage by using the voltage doubler circuit to trigger the pre-ignition of the xenon lamp, which can continuously provide a stable high-voltage pulse signal for the xenon lamp, thereby achieving reliable and stable triggering of the pre-ignition of the xenon lamp under long cable transmission, and solving the problem that the traditional xenon lamp pre-ignition circuit cannot reliably trigger the pre-ignition of the xenon lamp under long cable transmission. In addition, the use of the voltage doubler circuit to output high voltage to trigger the pre-ignition of the xenon lamp also reduces the number of transformers, thereby reducing the volume and cost of the pulse xenon lamp pre-ignition circuit, making it suitable for large-scale application and promotion.

An amusement park system 50 includes an electronic post 56 configured to be positioned within a receptacle 54 of a base 52 of the amusement park system 50. The electronic post 56 is configured to receive power directed to the receptacle 54. The amusement park system 50 also includes a control system 82 configured to determine a location of the electronic post 56 and instruct operation based on the location.

An aerosol generating system includes an aerosol generating article including an amorphous solid material and an aerosol generating device including a cavity configured to receive the aerosol generating article, a receptor configured to receive a liquid material from the aerosol generating article, and a heating structure configured to heat the amorphous solid material in a first temperature range in which the amorphous solid material undergoes a phase change into a liquid material and heat the liquid material in a second temperature range in which the liquid material undergoes a phase change into an aerosol, the second temperature range being different from the first temperature range.

The embodiment of the invention provides a device and a method for dimming. The apparatus includes: an on-off control circuit connected to a power source and capable of generating an on-control signal; each light modulator comprises a light modulation control unit, a light modulation execution unit, a detection unit and a switch unit, the light modulation control unit is coupled to the on-off control circuit to receive the on-control signal, the light modulation execution unit is connected to the light modulation control unit and the live wire, the detection unit is connected to the light modulation execution unit and the light modulation control unit, and the switch unit is connected to the light modulation execution unit and the light modulation control unit. The detection unit can detect the voltage of the live wire and can generate a switch-on indication signal under the condition that the amplitude of the voltage of the live wire exceeds a preset threshold value, and the switch unit is connected to the live wire, the load and the dimming control unit; and the dimming control unit can control the switch unit and the dimming execution unit to be switched on based on the switching-on control signal and the switching-on indication signal, so that the voltage on the live wire is transmitted to the load.

An LED driver control circuit for an LED driver operating under a line-switch dimming protocol. The LED driver control circuit generates a control signal that can switch between a voltage level at a first node and a voltage level at a second node. The first node is connected to a three-phase input via a first voltage control circuit, and the second node is connected to the three-phase input via a second voltage control circuit. The first voltage control circuit controls the voltage level at the first node to be greater than the voltage level of each phase of the three-phase input in a first embodiment, or less than the voltage level of each phase of the three-phase input in a second embodiment, for at least a portion of a cycle of the corresponding phase. The second voltage control circuit controls the voltage level at the second node to be less than or equal to the voltage level of each phase of the three-phase input in a first embodiment, or greater than or equal to the voltage level of each phase of the three-phase input in a second embodiment, for the entire cycle of the corresponding phase.

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 relates to the technical field of xenon lamp power supply control, in particular to a xenon lamp power supply adaptive structure based on analog control. According to the technical scheme, the circuit comprises a rectification filtering module, an LCC half-bridge resonance circuit, a transformer, a voltage doubling circuit, a full-bridge rectification circuit and a control unit which are connected in sequence. A primary coil of the transformer is connected with the LCC half-bridge resonance circuit, and two secondary coils of the transformer are respectively connected with the input end of the voltage doubling circuit and the input end of the full-bridge rectification circuit; and the output end of the voltage doubling circuit is coupled to an upper bridge arm node of the full-bridge rectifying circuit. Through combination of high-frequency resonant topology and analog feedback control, the xenon lamp trigger voltage self-adaptive adjustment and millisecond-level pre-combustion state accurate switching are realized while the power supply volume (a high-frequency transformer replaces an industrial frequency transformer) is remarkably reduced, the defects of large volume and high loss of a traditional scheme are overcome, and the reliability of the xenon lamp trigger voltage self-adaptive adjustment and millisecond-level pre-combustion state accurate switching is improved. And the pre-combustion success rate is improved, the switching loss is reduced, and the reliability, the energy efficiency and the adaptability of the xenon lamp power supply are comprehensively optimized.

A commissioning device can include a commissioning device controller configured to: broadcast, using a first wireless communication technology, a query signal from a location in a spatial volume that covers a portion of an area of interest within the spatial volume; receive, using a second wireless communication technology, an acknowledgement signal from a local controller, wherein the acknowledgement signal includes an identification of each of a plurality of electrical devices located within a broadcast range of the query signal, wherein the plurality of electrical devices is a subset of all electrical devices in the system; determine that one of the plurality of electrical devices is located in the area of interest; and send a validation signal to the local controller, wherein the validation signal includes identifying information about the one electrical device.

The present disclosure relates to load control devices with overcurrent protection circuitry. A load control device for controlling power delivered from an alternating current power source to a power load can include a controllably conductive device, a control circuit, and an overcurrent protection circuit configured to be disabled when the controllably conductive device is non-conductive. The control circuit can be configured to control the controllably conductive device to be non-conductive at the beginning of each half cycle of the AC power source and to be conductive during each half cycle at a firing time (e.g., using forward phase control dimming techniques). The overcurrent protection circuit can be configured to render the controllably conductive device non-conductive when an overcurrent condition occurs in the controllably conductive device. The overcurrent protection circuit can be disabled when the controllably conductive device is non-conductive and enabled after the firing time at which the controllably conductive device is rendered conductive during each half cycle.