397 results about "Diode array" patented technology

The invention discloses an output conversion system and method for a UPS (Uninterrupted Power Supply), and the system comprises a main power input end which is connected with a bridge rectifier through a first electromagnetic relay; the energy storage module comprises a super capacitor group and a parallel lithium battery group, and is coupled with the bus capacitor through a bidirectional DC / DC converter; the input end of the multi-path regulation and control module is connected with the bus voltage sensor, and the output end is connected with the switching execution unit through a second electromagnetic relay group; the dynamic switching unit comprises an I-GBT matrix and a reverse blocking diode array which are respectively connected with the inverter and the bypass circuit in parallel; and the real-time monitoring module is provided with a current harmonic analysis unit and a load break variable detection unit, and the output end of the real-time monitoring module is connected with the ADC port of the central processor. According to the invention, systematic improvement is realized in three dimensions of electric energy quality guarantee, equipment reliability and dynamic response capability through an original multi-path regulation and control architecture and a deep cooperative intelligent control strategy.

The invention belongs to the technical field of optical devices, and provides a single photon avalanche diode array, a receiving sensor and a laser radar, at least two SPAD units are arranged in an array, a microlens converges incident light to the corresponding SPAD unit, a back metal grid connects the SPAD unit and a corresponding external electrode, a first dielectric layer is arranged between the microlens and the SPAD unit, and a second dielectric layer is arranged between the microlens and the SPAD unit. The second dielectric layer is arranged between the SPAD units and the front metal wiring layer, and the front metal wiring layer is electrically connected with the corresponding SPAD units through contact metal wires. The deep groove isolation columns are arranged between the adjacent SPAD units, and the metal filling structures are arranged between the deep groove isolation columns and the back metal grids, so that self-excitation photons generated when the SPAD units are excited by incident light can be isolated, the self-excitation photons are prevented from entering the adjacent SPAD units through grid gaps, the probability of photon crosstalk is reduced, and the optical crosstalk of the device is reduced.

The invention relates to the technical field of medicine production and detection, and particularly discloses a method for determining the content of paeoniflorin in radix astragali and cassia twig Wuwei decoction granules, which comprises the following steps: analyzing paeoniflorin by high performance liquid chromatography, and sequentially performing sample pretreatment, chromatographic analysis and content determination. An HP-20 resin column is adopted for pretreatment, ethanol with different concentrations is used for elution in sequence, and 50% and 70% ethanol eluents are collected and concentrated; a C18 chromatographic column is selected, an acetonitrile-0. 1% phosphoric acid aqueous solution is used as a mobile phase, a diode array detector is used for detection at the wavelength of 230 nm, and a multi-wavelength deconvolution algorithm is used for quantitative analysis. The determination method disclosed by the invention is high in specificity, stability, repeatability, intermediate precision, accuracy and the like all accord with regulations, and the durability of chromatographic conditions is relatively good.

The invention discloses a construction method of a gout compound decoction fingerprint as well as the fingerprint and application thereof, and belongs to the technical field of analysis and detection. The construction method of the fingerprint spectrum comprises the following steps: taking a test solution prepared from the gout compound decoction; the test solution is subjected to HPLC-SPD detection, so that the fingerprint spectrum of the gout compound decoction is obtained, and the HPLC detection conditions are that a C18 chromatographic column is used, a C18 chromatographic column is used, a C18 chromatographic column is used, a C18 chromatographic column is used, and a C18 chromatographic column is used for detecting the fingerprint spectrum of the gout compound decoction. An aqueous solution containing 0.1%-0.2% of phosphoric acid is used as a mobile phase A, and acetonitrile is used as a mobile phase B for gradient elution; the flow velocity is 0.8-1 mL / min, the column temperature is 25 DEG C, the sample injection volume is 5-10 [mu] L, and a diode array detector is 190-400 nm full-wave band scanning. The chemical components in the gout compound decoction are comprehensively and systematically analyzed, and a basis is provided for quality control and in-depth study of a pharmacodynamic material basis.

The invention provides a method for identifying gallnut honey by utilizing a characteristic marker, and belongs to the technical field of honey detection. According to the method, kynurenic acid is taken as a characteristic marker, quantitative detection is carried out on kynurenic acid through a high performance liquid chromatography-diode array detector method, and the content of kynurenic acid in gallnut honey is not lower than 14 mg / kg. The kynurenic acid is used as the characteristic marker of the gallnut honey for the first time, the developed identification method also can successfully discriminate the gallnut honey, and the method has the advantages of simple pretreatment, common instruments and mobile phases, low cost, short time, accuracy and the like, and is suitable for industrial production. The method has application potential in gallnut honey identification and product grading.

The invention discloses an optical interconnection system which comprises a light source, a transmission medium and a photoelectric detector. The light source adopts a micro resonant cavity light-emitting diode array, and the transmission medium adopts a multi-core plastic optical fiber. An optical signal output by the micro resonant cavity light emitting diode array is transmitted to the photoelectric detector through the multi-core plastic optical fiber and is converted into an electric signal through the photoelectric detector. The light source of the optical interconnection system provided by the embodiment of the invention adopts the micro resonant cavity light-emitting diode array, the transmission medium adopts the multi-core plastic optical fiber, and good balance among low power consumption, high stability and high parallelism can be achieved through component optimization.

The driving device includes a starting-position adjustment circuit and a pulse-width modulation (PWM) circuit. The starting-position adjustment circuit shifts a PWM counting value according to a starting-position setting to generate an adjusted counting value of a first channel. The starting-position setting is configured to indicate which subframe period in a same display frame period a starting value of the adjusted counting value is located in. The PWM circuit compares grayscale data of the first channel with the adjusted counting value and generates a PWM signal of the first channel according to a comparison result.

The invention relates to the technical field of laser diodes, and provides a laser diode array side unidirectional pumping cavity comprising a pumping source used for emitting pumping light; the diffuse reflection cavity is arranged on one side of the pumping source, the inner side wall of the diffuse reflection cavity comprises a curved surface part and a straight inclined surface part, a gap is formed in the center line of the straight inclined surface part, and the gap serves as an incident port of the pumping light; the incident port is opposite to the light-emitting surface of the pumping source; the cooling pipe is arranged on the side, away from the pumping source, of the diffuse reflection cavity; the laser gain medium and the cooling pipe are coaxially arranged, the laser gain medium is located on the inner side of the cooling pipe, and the space between the laser gain medium and the cooling pipe is filled with cooling liquid. Through the arrangement of the curved surface part and the straight inclined surface part of the diffuse reflection cavity and the arrangement of the cooling pipe and the laser gain medium on the side, far away from the pumping source, of the diffuse reflection cavity, uniformization can be carried out on one-way pumping light entering the laser gain medium, and one-way high-power and high-uniformity pumping of the laser gain medium is achieved.

The invention discloses a preparation method and application of a micron-sized quantum dot light-emitting diode array device, and the method comprises the steps: sequentially forming a hole injection layer, a hole transmission layer, a patterned insulating layer, a quantum dot light-emitting layer, an electron transmission layer and a top electrode on an indium tin oxide substrate, and preparing the patterned insulating layer through photoresist; quantum dots are spin-coated to form a process route of an array light-emitting layer, electron leakage generated at pixel gaps is inhibited through photoresist, high resolution is achieved, and meanwhile the performance of a recorded Micro-QLED array device is achieved; a novel cross-linked hole transport layer PF8Cz-X is adopted to verify and solve the problem that a photoacid generator component in the photoresist generates strong oxidizing photoacid, and a triphenylamine structure hole transport layer in the QLED device is damaged by a reaction in a free radical coordination binding mode; and physical dissolution of a developing solution in a micro-nano processing technology is avoided by designing a thermal crosslinking group, and a photoetching system which is compatible with a solution processing technology and lossless to the Micro-QLED array device is constructed.

A multifunctional, adaptive facial mask delivers cosmetic massage and light therapy in a hands-free format. The mask integrates three elements: (i) internal motion-guiding contours that channel tactile stimulation along anatomically relevant lymphatic paths, (ii) zone-selective actuation using vibration nodes, inflatable micro-bladders, or oscillating pads, and (iii) a flexible Light-Emitting Diode (LED) grid delivering red, near-infrared, and optional blue wavelengths. The soft, medical-grade silicone shell conforms to diverse facial anatomies and maintains a continuous smooth surface that isolates the user from hard mechanics. A microcontroller sequences stimulation across zones (forehead, temple, cheek, nasolabial, jawline, and neck strap) to emulate facial-yoga strokes and lymphatic drainage. Preset modes such as Lift, Recovery, and Glow manage timing, direction, and intensity. Optional enhancements include gentle heat, removable cooling inserts, and low-frequency micro-stimulation. The mask provides an integrated combination of guided internal geometry, sequenced hands-free actuation, and cosmetic light therapy within a flexible, inclusive design.

The invention relates to an optical fiber power 24-path synchronous measurement method and system based on leakage light, and belongs to the technical field of optical fiber communication monitoring. The method comprises the steps that bending force is applied to a to-be-measured optical fiber through a micro-bend clamping coupler, and a leakage light signal is captured through a V-shaped angle positioning structure and a double-photosensitive sensor; and high-precision conversion and amplification of optical-electric signals are realized by combining 24 paths of parallel InGaAs-PIN photodiode arrays and a high-speed logarithmic amplifier. 24 paths of signals are synchronously acquired through an SPI protocol by adopting a master-slave single-chip microcomputer architecture, data processing is performed by combining a moving average filtering algorithm and a voltage-optical power conversion algorithm, and finally real-time monitoring of multi-channel optical power is realized through a data transmission interface. The device supports modular design, has the advantages of being non-invasive, low in additional loss, short in response time and the like, and is suitable for multi-channel online monitoring and maintenance of an optical fiber communication network.

The present invention relates to a micro light emitting diode chip and a display panel, the micro light emitting diode chip comprising: a micro light emitting diode array including a plurality of micro light emitting diodes configured to emit light; and a microlens disposed over the micro light emitting diodes, where adjacent microlenses are spaced apart from each other between the micro light emitting diodes. According to the micro light-emitting diode chip provided by the invention, the current expansion structure is arranged between the micro light-emitting diodes, so that light crosstalk of adjacent micro light-emitting diodes can be avoided; the micro lens can gather light emitted by the micro light-emitting diode, so that the luminance and the luminous efficiency of the micro light-emitting diode display chip are improved.

The embodiment of the invention provides a voltage-controlled oscillator, an oscillator circuit, a chip and electronic equipment, relates to the technical field of communication or radar detection, and can improve the linearity of the voltage-controlled oscillator. The voltage-controlled oscillator comprises a voltage-controlled oscillator resonant cavity, an even harmonic generator circuit and a self-mixing frequency tripler circuit. The voltage-controlled oscillator resonant cavity comprises a voltage transformation diode array and a first-stage mode switching capacitor. The even harmonic generator circuit comprises a group of cross coupling tubes, one end of each cross coupling tube is electrically connected to the two differential ends of the voltage-controlled oscillator, and the even harmonic generator circuit serves as an even harmonic generator and is electrically connected to the self-mixing frequency tripler circuit. The self-mixing frequency tripler circuit comprises a differential unit and a resonant cavity, and one end of the self-mixing frequency tripler circuit is electrically connected to the even harmonic generator circuit. The low-frequency voltage-controlled oscillator and the self-mixing frequency tripler circuit achieve current multiplexing, the even harmonic generator circuit serves as a negative resistor of the oscillator and also serves as an even harmonic generator of the self-mixing frequency tripler, and the linearity of the millimeter wave frequency source is improved.

A security floodlight has a light panel mounted in a housing for illuminating an area in proximity to the housing, an array of light emitting diodes (LEDs) mounted in the housing and arranged in a horizontal single row, and a controller configured activate the light panel based on an input signal and to sequentially activate each of the LEDs in the array of LEDs in a rotating sequence only when the light panel is not activated. The input signal may be received from a proximity sensor mounted in the housing that indicates the detection of movement in an area in close proximity to the security floodlight. The rotating sequence simulates operation of a low-light security camera by sequentially illuminating each LED in the array of LEDS in a rotating manner from a first end of the horizontal single row to a second end of the horizontal single row.

Provided is a vehicle lamp capable of illuminating a desired region with a desired brightness without a complicated optical system even when a light source includes one multi-divided LED array. The vehicle lamp includes a light source (multi-divided LED array) (3) configured such that a large number of light emitting elements (micro LEDs (31)) are arranged, the light source (3) selecting a light emitting element to emit light of a desired pattern, a main optical system (2) that projects the light emitted from the light source to form a main light distribution pattern, and an auxiliary optical system (4) that causes the light which has been emitted from the light source (3) and does not directly enter the main optical system (2) to enter the main optical system (2). The light incident from the auxiliary optical system (4) (downward reflecting mirror (41)) to the main optical system (2) forms an auxiliary light distribution pattern in an external region adjacent to the main light distribution pattern.

The invention relates to a controlled environment agriculture for plant cultivation using artificial lights. The artificial lights comprise an array of light emitting diodes fabricated using gallium nitride, each gallium nitride operable over a wavelength of 380 nm to 900 nm. The array of light emitting diodes include at least one integrated drive controller and at least sensor. The controlled environment agriculture includes at least an imaging device and a control module. The control module comprises a machine learning module and an aggregator module configured connected to at least one sensor and at least one imaging device to aggregate various parameters including environmental data, and plant phenotyping data associated with the plants. Based on the aggregated The control module determines the spectral requirements of the plants for optimal growth based on at least one parameter aggregated from at least one sensor, at least one imaging device and a database to adjust the spectral light in the array of light emitting diodes in real time. The control module is associated with a power module for regulating the electrical power required by the array of light emitting diodes to optimize power consumption. In at least one implementation, the control module and the power module are dynamically controlled in real time by implementing machine learning algorithms to automate the controlled environment for agriculture to optimize and control the spectral and power requirements of the array of light emitting diodes.

Implementations described herein are related to a diode driver that recirculates residual current from an operating current pulse in an inductor. Such recirculation produces a diagnostic current pulse to a diode array for measuring a voltage drop across a portion of the array. For example, after a controller charges an inductor of a diode driver to deliver operating current pulses to a portion of a diode array for illumination, the controller causes a residual current to remain and recirculate in the inductor. In some implementations, in response to the recirculating current reaching a monitoring threshold, the controller delivers a monitoring pulse to the portion of the diode array to measure a voltage drop across the portion of the diode array. In some implementations, the controller may infer defectivity in the portion of the array from such voltage drop measurements over time.

The invention discloses a compound monitoring method and system based on chromatographic column analysis and a medium, and relates to the technical field of chromatographic detection.The method comprises the steps that a complex matrix sample is taken, and first chromatographic column response distribution of the complex matrix sample is collected through a diode array detector; enhancement strategy optimization is carried out according to adjustable action parameters of the diode array detector, and the diode array detector collects second chromatographic column response distribution of the complex matrix sample under a first enhancement strategy; identifying a difference chromatographic column response distribution of the first chromatographic column response distribution and the second chromatographic column response distribution, and constructing a high-dimensional feature fusion fingerprint; and performing similarity measurement based on the high-dimensional feature fusion fingerprints and a pre-constructed compound feature fingerprint database to obtain a compound detection result. The technical problem of low detection accuracy caused by insufficient chromatographic response information of the compound under a complex matrix condition in the prior art is solved, and the technical effect of improving the detection accuracy of the compound is achieved.

An apparatus includes a light-emitting diode (LED) driver circuit, one or more LEDs of an LED array, and an electronic switching circuit. The LED driver circuit is configured to generate an electric current. The one or more LEDs are electrically connected to the LED driver circuit. The electronic switching circuit is electrically connected to the one or more LEDs and configured to be placed in one of multiple switching configurations. The electronic switching circuit is further configured to direct a portion of the electric current away from the one or more LEDs, such that a remaining portion of the electric current drives the one or more LEDs. The portion of the electric current corresponds to the one of the multiple switching configurations.

The present invention relates to a micro light emitting diode chip and a display panel, the micro light emitting diode chip comprising: a micro light emitting diode array, the micro light emitting diode array comprising a plurality of micro light emitting diodes, the micro light emitting diodes being configured to emit light, and the micro light emitting diodes comprising a light emitting mesa; the micro light-emitting diodes are arranged on the light-emitting table top, the micro lenses are arranged on the micro light-emitting diodes, the side faces of the adjacent micro lenses are separated from each other to form gaps, the bottoms of the gaps are connected, and the bottoms of the gaps are higher than the top of the light-emitting table top. According to the micro light-emitting diode chip provided by the invention, the current expansion structure is arranged between the micro light-emitting diodes, so that light crosstalk of adjacent micro light-emitting diodes can be avoided; the micro lens can gather light emitted by the micro light-emitting diode, so that the luminance and the luminous efficiency of the micro light-emitting diode display chip are improved.

An apparatus includes a light-emitting diode (LED) driver circuit, one or more LEDs of an LED array, and an electronic switching circuit. The LED driver circuit is configured to generate an electric current. The one or more LEDs are electrically connected to the LED driver circuit. The electronic switching circuit is electrically connected to the one or more LEDs and configured to be placed in one of multiple switching configurations. The electronic switching circuit is further configured to direct a portion of the electric current away from the one or more LEDs, such that a remaining portion of the electric current drives the one or more LEDs. The portion of the electric current corresponds to the one of the multiple switching configurations.

The invention belongs to the technical field of terahertz communication, provides an annular combined full-band terahertz even harmonic frequency multiplier, and is used for solving the problem that a broadband frequency multiplier is relatively low in efficiency. The antenna comprises an input waveguide, an on-chip integrated circuit and an output waveguide, wherein the on-chip integrated circuit comprises an input probe, an input matching microstrip line, an annular combined structure, an output matching circuit and an output probe; the annular combined structure is formed by connecting two signal branches in parallel, each signal branch is formed by connecting a band-pass filter and a diode array in series, and the diode arrays in the two signal branches form an anti-parallel structure. An annular combined structure is provided, a high-frequency-band narrow-pass-band filter and a low-frequency-band narrow-pass-band filter are arranged on two signal branches of the annular combined structure respectively, signals are improved from full-frequency-band filtering to two narrow-band filtering, and finally the two narrow-band signals are combined into a broadband signal. Therefore, the full-band frequency multiplication efficiency of the device is improved.

Example implementations described herein involve a media adaptor configured to provide electrical / optical and optical / electrical conversion for a multi-mode waveguide (MMWG) interconnect, the media adaptor involving one or more ball grid arrays; and a tail-cut fiber array block (tcFAB) connected to a first array of photodiodes and a second array of laser diodes from direct optical wire (DOW) bonding.

The invention relates to the technical field of emergency protection circuits, and provides an EEG pre-amplification circuit and brain-computer interface equipment. The buffers are connected in parallel, and the corresponding input ends of the buffers are connected with the electrode sensors; the buffer is a four-channel unity gain buffer; the input end of the electrostatic protection diode array is connected with the positive electrode and the negative electrode of a preset power supply, and the input end is further connected between the corresponding input ends of the buffers and the electrode sensor; the first filtering capacitor is connected with the first voltage stabilizing capacitor in parallel, the second filtering capacitor is connected with the second voltage stabilizing capacitor in parallel, the input ends of the first filtering capacitor and the first voltage stabilizing capacitor are connected with the positive electrode of a preset power supply, and the input ends of the first filtering capacitor and the first voltage stabilizing capacitor are connected with a preset grounding end; the input ends of the first filtering capacitor and the first voltage stabilizing capacitor are connected with the negative electrode of the preset power supply, and the input ends are connected with the preset grounding end, so that the power supply noise corresponding to the preset power supply is minimized.

A method for operating a portable photo booth, wherein the portable photo booth comprises a housing, a camera, and a light-emitting diode array which comprises a plurality of individually controllable light-emitting diodes, wherein the light-emitting diode array is controlled according to a control instruction in such a way that the light-emitting diode array at least temporarily assumes a lighting state in which the brightness of at least one first light-emitting diode of the light-emitting diodes differs from the brightness of at least one second light-emitting diode of the light-emitting diodes. The invention also relates to a portable photo booth.

The invention discloses a method for determining the content of organic acids in yellow tea by high performance liquid chromatography, which comprises the following steps: carrying out gradient elution by using a C18 liquid chromatographic column AcclaimTM 120 at the column temperature of 30 DEG C and using methanol as a mobile phase A and 0.1 mol / L KH2PO4 as a mobile phase B; wherein the gradient elution procedure is as follows: 1% A is carried out in 0-12min; 12-15 min, 1%-50% of A is added; 15-25 min, 50% of A is determined; 25-27 min, 50%-1% of A is obtained; 27-30 min, 1% of A is set; a diode array detector is used for detecting the sample, the detection wavelength is 210 nm, the sample size is 30 [mu] L, and the initial flow velocity is 1.2 mL / min; the time is 0-12 minutes, and the flow velocity is 1.2-1.0 mL / min; the time is 12-30 minutes, and the flow velocity is 1.0 mL / min. According to the method, during gradient elution, the separation effect of all organic acids is good, components which are difficult to separate can be measured, the detection cost is saved, the detection efficiency is improved, and the method has important significance on quality research of yellow tea and establishment of a detection method standard of the organic acids in the tea leaves.

An optic for a light-emitting diode (LED) array comprises an arrangement of optical structures for providing down lighting distribution from the LED array and a waveguide edge for providing up-lighting distribution from the LED array. Luminaires are described comprising an LED array and the optic. An overhead light fixture includes a driver assembly and a light-emitting assembly. The light-emitting assembly is operably connected to the driver and configured for downward emission of light from a light source of the light-emitting assembly. The light fixture is configured to be mounted to a canopy sheet of an overhead canopy, with the driver assembly disposed above the canopy sheet and the light-emitting assembly disposed below the canopy sheet. A bezel is optionally disposed around a lens of the light-emitting assembly, for aesthetic reasons and / or for controlling a degree of lateral emission of light from the light fixture.

The invention discloses a multi-parameter acquisition device based on a transformer area intelligent fusion terminal, and relates to the technical field of acquisition and metering. According to the multi-parameter acquisition device, an AC-DC switching power supply provides conventional power supply; the super capacitor module provides standby power supply; the protection circuit is used for protecting alternating current strong current voltage input from the outside and then transmitting the alternating current strong current voltage to the rectifier diode array; the rectifier diode array is used for carrying out rectification processing on the AC voltage after protection processing by using a diode and sending the AC voltage to the AC-DC switching power supply; the voltage transformer converts external power frequency strong current voltage into a weak current signal; the combined current transformer converts the external power frequency strong current into a weak current signal, injects a high-frequency signal into an external power frequency strong current loop and detects a return signal; the metering chip is used for metering weak current signals obtained after voltage and current conversion to obtain acquisition data; and the loop inspection algorithm module is connected with the combined current transformer, and analyzes the return signal to obtain state data of the current loop.

The present invention discloses a polarization camera system that integrates a polarization sensor with a homogeneous dispersive retarder to detect and measure simultaneously the four components of the Stokes vector of polarized light. Unlike existing methods that require complex setups or expensive components, this approach uses a single sensor setup, combining the division of focal plane method with wavelength sensitivity inherent in many camera sensors. The system (1) comprises: a polarization sensor (2) having a polarizer array (2a) and a color channel filter (2b); a photodiode array (2c) configured to measure at least four intensities; a light entrance (4); a microprocessor (5); a first homogeneous dispersive retarder (3). The first homogeneous dispersive retarder is configured to introduce wavelength-dependent retardation δ(λ) to the incident polarized light, so that [δ(λi) ≠ δ(λj)]; and, the microprocessor is configured to calculate a complete Stokes vector of incident polarized light from the measured intensities.

A photodetector (90) having an exposure surface (91) has a first photodiode array (1) having a first light entry surface (11) and a second photodiode array (2) having a second light entry surface (21). The first photodiode array (1) has an avalanche photodiode (10). The second photodiode array (2) has a non-amplifying photodiode (10). The first light entry surface (11) and the second light entry surface (21) form sub-surfaces of the exposure surface (91).