155results about "Electric lighting sources" patented technology

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.

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).

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.

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 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.

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.

The application discloses a high-voltage microwave power filament voltage adjustment method applied to a voltage adjustment circuit, and the method comprises the following steps: outputting a high-voltage side equivalent filament voltage according to a low-voltage side alternating current input voltage instantaneous amplitude, an alternating current output current amplitude and a transient adjustment signal; inputting the high-voltage side equivalent filament voltage and collected magnetron anode high-voltage direct current into a recursive time sequence model, so that the recursive time sequence model outputs a filament average reference temperature prediction value; determining a temperature minimum point of a filament axial direction according to the filament average reference temperature prediction value; determining whether to immediately release, delay execution or modify an inductance control instruction according to the temperature minimum point and a constraint judgment constant; and positioning a high-voltage side potential physical fault by using the alternating current output current amplitude, a duty cycle instruction of the transient adjustment signal, the high-voltage side equivalent filament voltage and a modulation amplitude index. Through the above method, the problem of transient stop vibration and high-voltage sparking caused by inductance switching delay and filament thermal inertia mismatch is solved.

The present invention provides an ultraviolet-light-radiating device that may irradiate ultraviolet light stably even in a low air pressure environment. To achieve this object, one representative ultraviolet-light-radiating device according to the present invention includes a radiating unit configured to irradiate ultraviolet light, a first detection unit configured to detect a dielectric strength of air in an atmosphere in which the ultraviolet-light-radiating device is disposed; and a control unit configured to control the radiating unit based on the dielectric strength of air detected by the first detection unit.

The utility model relates to the technical field of electronic ballasts, in particular to an electronic ballast with a protection device, which comprises a ballast main body, side frames are arranged at two ends of the ballast main body, a connecting frame is connected between the side frames, and a side plate is fixedly connected outside the connecting frame. The ballast comprises a ballast main body, the ballast main body is provided with side plates, the outer portions of the side plates are detachably connected with a first protection assembly, a connecting assembly is arranged between the connecting frame and the side frames, the outer portion of the connecting assembly is provided with a second protection assembly, and an adjusting protection assembly is arranged above the side frames and connected with the side plates. The ballast main body is connected through the connecting frame, then the periphery of the ballast main body can be protected through the arrangement of the first protection assembly, the second protection assembly and the adjusting protection assembly, impact generated by collision can be buffered even if the ballast main body is collided, and safety of internal parts of the ballast main body is guaranteed.

The utility model relates to a mercury lamp power supply device for a tester. The mercury lamp power supply device comprises an electronic trigger, a ballast and a relay, a first end of a normally open contact of the relay is electrically connected with one end of the power supply end, a second end of the normally open contact of the relay is electrically connected with a first end of the ballast, and a coil of the relay is electrically connected with the tester control end; the second end of the ballast is electrically connected with the first end of the load; the first end of the electronic trigger is connected to a line between the second end of the ballast and the first end of the load, the second end of the electronic trigger is electrically connected with the first end of the load, and the second end of the load is electrically connected with the other end of the power supply end. According to the mercury lamp power supply device for the tester, the overall structure is simple, maintenance is easy, the success rate of lightening the mercury lamp is high, and voltage and current provided for the mercury lamp after lightening are stable.

This invention relates to a light source driving circuit and a gas analyzer. The light source driving circuit includes: a driving module comprising an inverter chip and a high-frequency transformer, wherein the inverter chip outputs A and B are square waves with a 180° phase difference, used to drive the high-frequency transformer to convert a DC voltage signal into an AC square wave signal; a DC voltage feedback control module, used to adjust the driving voltage of the primary coil of the high-frequency transformer according to the DC voltage feedback from the rectified AC square wave signal, and synchronously drive the light source with the AC square wave signal; and a timing control module, used to generate on or off signals through timing control to control the intermittent driving of the light source. The light source driving circuit of this invention uses automatic intermittent driving of the light source, which can greatly extend the life of the light source and eliminates the need for MCU control. The gas analyzer of this invention uses a light source driving circuit to drive the light source, resulting in stable light source operation and improved detection accuracy.

The invention provides cathodoluminescent lamps with improved optical stability and extended lifetimes through advanced enclosure and electron emission configurations. A filament emits electrons via thermionic emission, which are accelerated by an anode toward a cathodoluminescent emitter to produce photons. The vacuum enclosure comprises glass, fused silica, and metal portions coupled with vacuum-compatible epoxy, with the metal providing thermal and electrical conduction. The lamp can include anode current monitoring and filament power control to stabilize emission. An electrically activated getter maintains vacuum conditions by chemically bonding contaminants and can be refreshed over time. The designs enable effective vacuum maintenance, stable operation, and long-term reliability suitable for commercial applications.

The invention relates to a signal generator module, comprising: input terminals for supplying a low-DC voltage from a LED driver, an interface for manually or electronically supplying a signal generator control command, a circuitry for generating a digital output signal preferably with a mains frequency during a defined state of the signal generator control command, and output terminals configured to supply the digital output signal to at least one input terminal of the LED driver.

This power supply circuit for a flash discharge tube comprises: a voltage supply source having one output terminal; a branching part which branches wiring connected to the output terminal into a first wiring and a second wiring; a main discharge capacitor connected to the first wiring; a trigger capacitor connected to the second wiring; a first rectifier element which is provided between the branching part in the first wiring and the main discharge capacitor and which passes a current from the branching part side to the main discharge capacitor side; and a second rectifier element which is provided between the branching part in the second wiring and the trigger capacitor and which passes a current from the branching part side to the trigger capacitor side.

A hair treatment device comprises an IPL lamp driven with pulses of energy. A switch is in series with the IPL lamp and is switched at a frequency in the range 50 kHz to 500 kHz to provide pulsed delivery of current to the IPL lamp with pulses shorter than the overall IPL pulse duration The current modulation is used to eliminate the initial current peak and its associated peak in light output. The modulation can be used during the entire IPL pulse, or only during a fraction of it, while the duty cycle or the frequency of the modulation can change during the IPL pulse in order to optimize the light output. A pulsed delivery of current is provided to the IPL lamp during a first portion of the pulses of energy and a continuous delivery of current is provided during a last portion of the pulses of energy.

The invention belongs to the technical field of power supply control, and particularly relates to an excimer lamp power supply intelligent control method and system, and the method comprises the following steps: S1, obtaining the real-time output voltage and output current of an excimer lamp and the DC bus voltage of a phase-shifted full bridge; estimating an equivalent complex impedance amplitude, a phase angle and a phase angle change rate of the excimer lamp in a next switching period according to voltage and current sampling values in a plurality of continuous switching periods by adopting an extended Kalman filtering model; and S2, according to the deviation between the target output power and the real-time power, a basic phase shift angle is calculated through a proportional-integral controller, and the gain of the proportional-integral controller is determined according to the change rate of the phase angle. According to the invention, the accuracy of power control and the inhibition capability on load disturbance and voltage fluctuation are improved, the stability of output power is ensured, the switching loss is reduced, the rapid success of the lighting process is ensured, and the stable switching to closed-loop control is realized.

The application provides a spliced array reconfigurable sun-like spectrum simulation device and a simulation method, which comprises one or more simulation modules, and the simulation modules can be reconfigured to form an array; the simulation module comprises a light source, a mirror (2), a lampshade (3), a shell (4) and a refrigeration channel; a refrigeration air circulation loop formed by the refrigeration channel comprises an air outlet (6) and an air inlet (5) formed on the shell (4); light emitted from the light source is collected and reflected by the mirror (2) to form a uniform light spot. The application can be used for large-area sun light simulation test of a spacecraft, is a splicable sun radiation simulation device which can be used under normal temperature and pressure and in a space environment, and a method for simulating external heat flow is developed according to the device, so that the special requirements of complex configurations and new spacecraft on the simulation of sun spectrum external heat flow are solved.

A pulsed light device and a related device are provided. The pulsed light device includes a charging module, a capacitor, and a light source. The capacitor is connected between the charging module and the light source, the charging module is configured to charge the capacitor, and the capacitor is configured to supply power to the light source to allow the light source to flash. The control method includes: controlling the light source to flash N times in one flash window, N being an integer greater than or equal to 3; controlling the capacitor to discharge to the light source during each flash of the light source; and controlling the charging module to charge the capacitor during a time interval between two adjacent flashes.