30 results about "Transmission curve" patented technology

The invention discloses a system and a method for realizing positive and negative weighting in an optical domain, and the system comprises a multi-wavelength light source array which provides multi-channel optical signals, and each wavelength corresponds to an input channel; the adjustable bias photoelectric modulator arrays are in one-to-one correspondence with the light sources, a quiescent working point is biased in a positive / negative slope linear region of a transmission curve through an independent bias circuit, positive and negative weight symbol control is realized, and an input electric signal is loaded; the multi-wavelength micro-ring weighting unit is used for weighting the modulated optical signal by regulating and controlling the transmissivity of the micro-ring; the photoelectric detection unit adopts a single-path detector to receive a composite optical signal and convert the composite optical signal into an electric signal; and the capacitor blocking and signal synthesis unit filters a direct current component, synthesizes an alternating current weighted signal and outputs a real number weighted sum. The system does not need to balance detectors and redundant devices, simplifies hardware architecture, reduces cost and size, reduces power consumption, improves weighting precision and reliability, supports flexible expansion of multi-wavelength channels, adapts to requirements of a large-scale optical neural network, and provides support for optical calculation integration and low-power-consumption landing.

A spectrometer device (110) for obtaining spectroscopy information about at least one object (112) wherein the spectrometer device (110) comprises:-at least one detector (116) for detecting detection light (118) from the object (112); -at least one optical filter (120) configured for passing incident light in at least one selected wavelength range onto the detector (116), where a transmission curve of the optical filter (120) depends on an angle of incidence; -at least one light source (124) configured for emitting illumination light (126) in at least one optical spectral range; -at least one sample interface (130) configured for allowing the illumination light (126) to illuminate the object (112) and configured for allowing light from the object (112) to propagate via the optical filter (120) to the detector (116); -at least one first light path (132), where the first light path (132) is configured for allowing the illumination light (126) to propagate to the detector (116) via the optical filter (120) by passing at least once through the sample interface (130), where the optical filter (120) has a first transmission curve () for the first light path (132); -at least one internal calibration target (134) and at least one second light path (136), where the second light path (136) is configured for allowing the illumination light (126) to propagate to the detector (116) via the optical filter (120) by at least one interaction with the internal calibration target (134), where the optical filter (120) has a second transmission curve for the second light path (136); wherein the transmission curves of the first optical path (132) and the second optical path (136) of the optical filter (120) are proportional to each other, and wherein, independently of one or more of temperature, wavelength, or angle of incidence.

The invention relates to an optical fiber-based optical calculation nonlinear activation device, which comprises a micro-nano optical fiber, the micro-nano optical fiber comprises a conical region and standard single-mode optical fibers positioned at two ends of the conical region, a two-dimensional material is deposited on the surface of the conical region, and the two-dimensional material has two absorption mechanisms of saturated absorption and anti-saturated absorption. Different light transmission curves can be obtained on the basis, nonlinear processing of input light signals is achieved, nonlinear operation of input and output is completed, the relaxation time of the two-dimensional material is in the picosecond magnitude, after one-time light calculation is completed, rapid resetting can be achieved within extremely short time, energy does not need to be additionally applied to change the state, the response speed is extremely high, and the method is suitable for large-scale popularization and application. The optical computing nonlinear activation device can meet the requirement for high-speed optical computing, the computing speed of an optical computing system is remarkably increased, and the invention further provides a manufacturing method and system of the optical computing nonlinear activation device.

The application provides a passive equalizer for inter-core particle interconnection and an inter-core particle interconnection system, which comprises upper sawtooth metal copper wires, lower sawtooth metal copper wires, a first via and a second via; the upper sawtooth metal copper wires are provided with the second via on one side and connected to the lower sawtooth metal copper wires through the first via on the other side; and the upper sawtooth metal copper wires and the lower sawtooth metal copper wires are both provided in a sawtooth shape and staggered. The double-layer sawtooth cross metal copper wires embedded in the metal grounding layer can effectively solve the serious inter-symbol interference (ISI) problem existing in the high-speed parallel data transmission system, and the voltage transmission curve of the channel in the transmission system is flattened in the range of direct current frequency and Nyquist frequency, so that the eye diagram quality of the receiver is obviously improved.

The invention relates to an image capture device (10) comprising: - a photosensitive pixel array (21) having pixels (6) sensitive to infrared light and pixels (5) sensitive to visible light; - a filter (3, 33) disposed upstream of the pixel array (21) with respect to the path of the light, said filter (3, 33) having a transmission curve having a first transmission bandwidth in the visible range and a second transmission bandwidth in the infrared range; characterized in that the first transmission bandwidth has a maximum transmission rate and the second transmission bandwidth has a maximum transmission rate equal to k percent of the maximum rate of the first transmission bandwidth, with k ranging from 15 to 60. Figure for the abstract: Fig. 1

The application discloses a high-order mode coupler based on a double-inhibition structure of a transmission line model and a design method, and belongs to the accelerator physics and superconducting high-frequency technical field.The method comprises the following steps: determining a superconducting cavity base mode frequency, a high-order mode frequency band and an external quality factor Qe requirement; establishing an equivalent transmission line model comprising two parallel resonance base mode inhibition structures; optimizing a transmission curve through a normalized scattering matrix theory; converting the optimized transmission line model into a three-dimensional structure and further optimizing; modeling and calculating the external quality factor Qe in combination with the superconducting cavity; performing secondary electron multiplication effect simulation analysis; performing thermal load analysis by using an iterative process; and finally completing mechanical design.The application adopts the double-inhibition structure, greatly improves the base mode inhibition bandwidth, realizes deep inhibition of the base mode without pre-tuning, significantly reduces the superconducting module integration cost, improves the assembly efficiency and reduces the operation risk.

The invention discloses a typical scene generation method and device, a flexible direct transmission curve generation method and device, terminal equipment and a storage medium, and relates to the technical field of electric power systems.The typical scene generation method comprises the steps that historical scene set data of a plurality of new energy bases are obtained, and marginal probability distribution functions of the new energy bases are obtained; a target Copula function is determined; constructing a log-likelihood function according to the density function and the marginal probability distribution function of the target Copula function, and solving the log-likelihood function to obtain a correlation coefficient; according to the correlation coefficient and the target Copula function, constructing a Copula model; a joint output scene set of the new energy base is generated based on a Copula model, and a typical scene set is extracted from the joint output scene set based on a K-means clustering method. According to the method, the problem that the generated scene deviates from reality due to ignoring of tail characteristics can be avoided, and the accuracy of the generated typical scene is effectively improved.

The invention relates to a method for detecting a cataract in the eye of a driver in a vehicle (1). According to the invention, the degree of a cataract is passively determined in the vehicle (1) based on a projected and reflected display content of a head-up display unit (2) and signals from a driver observation camera (3) relating to at least one eye of the driver, with respect to an idealized transmission curve of the optical media.

The invention discloses a high-order mode coupler based on a transmission line model dual-suppression structure and a design method, and belongs to the technical field of accelerator physics and superconducting high frequency. The method comprises the following steps: determining the fundamental mode frequency, high-order mode frequency band and no-load quality factor Qe requirements of the superconducting cavity; establishing an equivalent transmission line model comprising two parallel resonant fundamental mode suppression structures; optimizing a transmission curve through a normalized scattering matrix theory; converting the optimized transmission line model into a three-dimensional structure and further optimizing the three-dimensional structure; carrying out overall modeling with the superconducting cavity to calculate a no-load quality factor Qe; secondary electron multiplication effect simulation analysis is carried out; carrying out thermal load analysis by adopting an iterative process; and finally, mechanical design is completed. The dual-suppression structure is adopted, the fundamental mode suppression bandwidth is greatly improved, deep suppression of a fundamental mode is achieved, pre-tuning is not needed, the integration cost of the superconducting module is remarkably reduced, the assembly efficiency is improved, and the operation risk is reduced.

This invention discloses a method, apparatus, device, and medium for evaluating vibration absorption in a vehicle suspension system. The method includes: before installing a dynamic vibration absorber in the suspension system, acquiring a first vibration value detected at a second position point when a first position point in the suspension system vibrates; determining a first transmission curve based on the first vibration value; after installing the dynamic vibration absorber in the suspension system, acquiring a second vibration value detected at the second position point when the first position point vibrates; determining a second transmission curve based on the second vibration value; and evaluating the vibration absorption effect of the suspension system based on the first and second transmission curves to obtain an evaluation result. By using the transmission curve between the first and second position points of the suspension system to guide the design of the dynamic vibration absorber, the matching of the dynamic vibration absorber's operating frequency band with the problematic frequency band inside the vehicle is improved, thereby increasing the accuracy of determining the center frequency band of the dynamic vibration absorber and effectively improving the vibration absorption effect of the suspension system.

The invention relates to a front-face substrate for a solar module, in particular for mobile applications, for example mobile devices, means of transportation, or manned or unmanned flying objects, wherein the front-face substrate has a weight per unit area of under 500 g / m2 and comprises a material which has a transmission curve T(λ) for a reference thickness of 100 μm, said transmission curve forming a transition from a lower transmission Tlow to an upper transmission Tup and having a transitional transmission Ttr therebetween of 50% in a wavelength range of 302 nm to 322 nm.

There is described an infrared microscopy system for imaging a substrate of a semiconductor material having an optical transmission curve with an increasing tail. The infrared microscopy system has: a monochromatic infrared light source illuminating the substrate with a monochromatic infrared light beam having an infrared wavelength; a visible light microscope objective optically coupled with the substrate, the visible light microscope objective chromatic aberration compensated for visible wavelengths below the infrared wavelength; and a visible light camera optically coupled with the visible light microscope objective, the visible light camera having an optical sensitivity curve with a decreasing tail, the infrared wavelength of the monochromatic infrared light beam overlapping with both the decreasing tail of the optical sensitivity curve and with the increasing tail of the optical transmission curve, the visible light camera capturing an image of the substrate through the visible light microscope objective.

The invention requests to protect an ADC static parameter test method used under a loose test condition. The method enables the static parameter test of an ADC to be carried out under a non-high-precision device. The method comprises the steps of signal identification and reconstruction, spectrum preprocessing, curve fitting and excitation noise removal. The signal identification and reconstruction part comprises the following steps: acquiring parameters of an ADC output sequence through a frequency spectrum three-interpolation and sine wave three-parameter fitting method, and reducing fitting errors; in the spectrum preprocessing part, the problem of spectrum leakage of data after FFT (Fast Fourier Transform) is inhibited through simple windowing processing and sampling point number conversion; the curve fitting part comprises the following steps: acquiring n-order harmonics through frequency spectrum transformation, fitting an ADC transmission curve, and reducing the requirements of a traditional test on coherent conditions and sample quantity points; the excitation noise removal part comprises the steps of offsetting noise of a signal source through amplitude ratio characteristics of the signal source, identifying nonlinearity of the ADC from static parameters containing external noise, and reducing condition limitation of testing on signal source precision.

An electroabsorption modulation laser (EML) device features a deployed modulator to improve the modulation efficiency and the steepness of the transmission curve. The EML device typically includes a laser segment, such as a distributed feedback (DFB) laser segment, an electroabsorption modulator (EAM) segment, and an isolation segment between the laser segment and the EAM segment. The EML device also includes an active region containing quantum well structures located within the laser segment and the EAM segment. The mesa segment spans the laser segment, the isolation segment, and the EAM segment and is deployed, such that at least a portion of the isolation mesa segment narrows outwards, and at least a portion of the modulator mesa segment narrows inwards. The EML device can be a ridge waveguide (RWG) type EML device or a buried heterostructure (BH) type EML device.

A kind of multi-threshold phase encoding-based all-optical quantization system belongs to all-optical analog-digital conversion field.It includes high repetition frequency femtosecond pulse light source,1×M optical splitter,phase-shifted optical quantization module, soliton self-frequency shift module and multi-threshold encoding module;The phase-shifted optical quantization module is M-path electro-optic modulator;The soliton self-frequency shift module includes first M-path high nonlinear fiber,M-path single-mode fiber and second M-path high nonlinear fiber;The multi-threshold encoding module includes M wavelength division multiplexer,M×N optical delay line array,M×N photodetector array and encoding module.The present application uses multi-threshold encoding module of phase encoding,realizes simultaneous judgment of multiple threshold points on power transmission curve of M electro-optic modulators, solves code type repetition problem of all-optical quantization system,realizes more effective quantization states with less channel number,improves quantization precision.Meanwhile,quantization bit number of the present application is improved to log2(2MN).

The invention relates to an image capture device (10) comprising: - a photosensitive pixel array (21) having pixels (6) sensitive to infrared light and pixels (5) sensitive to visible light; - a filter (3, 33) disposed upstream of the pixel array (21) with respect to the path of the light, said filter (3, 33) having a transmission curve having a first transmission bandwidth in the visible range and a second transmission bandwidth in the infrared range; characterized in that the first transmission bandwidth has a maximum transmission rate and the second transmission bandwidth has a maximum transmission rate equal to k percent of the maximum rate of the first transmission bandwidth, with k ranging from 15 to 60. Figure for the abstract: Fig. 1

This invention relates to the field of cloud desktop transmission protocol technology, and discloses an Android-based method for automatic switching of multiple protocols for cloud desktop connections. The method includes: identifying the cloud desktop transmission protocol corresponding to a target quality transmission curve segment; establishing a pixel change interval-protocol lookup table between the pixel change interval and the cloud desktop transmission protocol; if the current cloud desktop frame to be transmitted is not a video frame, then the Spice protocol is used for cloud desktop image transmission; if the current cloud desktop frame to be transmitted is a video frame, then the current cloud desktop frame to be transmitted is transmitted according to the target transmission protocol; determining whether the image transmission quality is qualified; if not qualified, then the PCoIP protocol is used for image transmission; if qualified, then returning to obtain the current cloud desktop frame to be transmitted. This invention also proposes an Android-based system, electronic device, and computer-readable storage medium for automatic switching of multiple protocols for cloud desktop connections. This invention can solve the problems of poor transmission effect and low flexibility in current cloud desktop transmission methods.

The application provides a method and system for determining a sending terminal new energy base external DC transmission curve. For the researched new energy base, full period simulation analysis is carried out based on the new energy scale and output characteristics. A mathematical optimization model with the minimum of power supply and new energy consumption is established by comprehensively considering the power supply and new energy consumption factors, the new energy installed capacity, the new energy output characteristics, the DC rated power and the DC utilization hour data. The mathematical optimization model is established by comprehensively considering the power supply and new energy consumption factors, and the sending DC transmission curve can be obtained after solving. The method can obtain the sending terminal new energy base external DC transmission curve, thereby providing a reference for planning and operation.

The present solution provides a method for constructing a design model of a metamaterial sensing chip based on deep learning and its application. The set of transmission curve acquisition points is input into the input layer of the design model for normalization processing to obtain a one-dimensional sequence. The one-dimensional sequence is respectively input into multiple convolutional branches of a parallel convolutional layer for convolutional processing to obtain convolutional features. The multiple convolutional features are input into a linear layer for splicing to obtain a spliced sequence. The spliced sequence is input into the output layer for processing and outputting a structural parameter group, which can be used for the design of a metamaterial sensing chip.

The invention discloses an energy spectrum measurement system and method for a non-point X-ray source, and solves the problems that when a transmission bent crystal spectrometer is applied to pulse hard X-ray energy spectrum diagnosis of an annular ray source, the energy spectrum measurement is interfered by the non-point source, and the energy spectrum diagnosis range is difficult to meet requirements. The front end face of the lead shielding body is provided with an incidence window, the trapezoid collimation body is arranged at the front end of the lead shielding body, and the small hole check block, the cylindrical surface bent crystal, the slit, the IP screen, the shielding baffle and the collimation laser are sequentially arranged in the lead shielding body from front to back. Compared with the prior art, the non-point source pulse X-ray energy spectrum can be diagnosed, the energy spectrum diagnosis requirement of a ray source with the peak voltage ranging from 300 kV to 400 kV is met, and 20 keV to 150 keV energy spectrum diagnosis can be achieved by adopting the structural design provided by the invention.

The invention discloses a method, a device and equipment for calibrating a streamline successive approximation type analog-to-digital converter, relates to the technical field of analog-to-digital converters, and aims to solve the problems that the conventional method for calibrating the streamline successive approximation type analog-to-digital converter is limited by a specific architecture and needs an additional circuit or algorithm. The method comprises the following steps of: obtaining basic data of a Pipelined-SAR ADC (Synthetic Aperture Radar Analog to Digital Converter) to be calibrated; generating a transmission curve of the first-stage MDAC according to the equivalent input signal and the equivalent output signal; determining a jump amplitude and a jump type corresponding to each capacitor weight position; and calculating the mismatch value of each capacitor according to the jump amplitude, the jump type and the capacitor weight corresponding to each capacitor weight position. Calibration is made based on the mismatch value. The calibration method for the streamline successive approximation type analog-to-digital converter is suitable for calibration of streamline successive approximation type analog-to-digital converters of different architectures, and extra circuits or algorithms are not needed.

The invention discloses a direct current channel power transmission curve drawing-up method, device and equipment and a storage medium, and is applied to the technical field of power system planning, and the method comprises the steps: obtaining the transmitting end historical data and the receiving end historical data of a target power grid; performing density estimation processing on the sending end historical data and the receiving end historical data to obtain a net load uncertainty set of the target power grid; determining a probability capacity reservation constraint based on the net load uncertainty set; constructing a collaborative adaptive optimization model by taking maximized new energy consumption as an objective function and taking probability capacity reservation constraint as a constraint condition; solving the collaborative adaptive optimization model to obtain a day-ahead DC power transmission plan curve; and performing rolling optimization processing on the acquired intra-day real-time interval data and the day-ahead direct current transmission plan curve to obtain a direct current channel transmission curve. The method provided by the invention can solve the technical problem of inaccurate curve drawing in the prior art so as to ensure the real-time power balance and stable operation of the power grid.

This invention relates to the field of laser optical device technology, and more particularly to a saturable absorber testing system and method, comprising: a laser for emitting pulsed light signals of a specific wavelength; an optical amplifier for receiving and amplifying the pulsed light signals emitted by the laser; an adjustable attenuator including a half-glass plate and a polarization beam splitter; wherein the half-glass plate is used to change the polarization direction of the incident linearly polarized light, so that the amplified light signal input to the adjustable attenuator undergoes a specific degree of adjustable attenuation when passing through the polarization beam splitter; a sample placement device for placing the saturable absorber sample to be tested; an optical power meter for measuring the optical power intensity of the light signal before and after passing through the sample; and a signal processing unit for data processing to obtain the nonlinear transmission curve of the saturable absorber sample. This invention optimizes the optical path structure of traditional testing systems and effectively reduces the influence of dispersion in the test optical path on the measurement results.

The present invention discloses a processing method, a controller and an audio processing chip, which can calculate the coordinates of the first common point and the second common point based on the slope of the first audio transmission curve, the slope of the second audio transmission curve, the interval range of the transition curve to be generated and the coordinates of the turning point, calculate the slope expression of the point on the transition curve based on the coordinates of the first common point, the coordinates of the second common point and the coordinates of the turning point, generate a transition curve based on the continuity of the slope of each point on the transition function and the slope expression, and then output a target transmission curve. The technical solution of the present application can obtain a transition curve that smoothly transitions and connects two transmission curves based on any turning point, any slope and any interval range, and is not limited to a transmission curve with a specific slope.

The invention discloses a high-speed radio frequency analog-to-digital converter correction method based on a reference channel. The method comprises the following steps: performing gain error correction on the reference channel; the output channel samples an input signal, the reference channel samples an inverse signal of the input signal, pseudo-random signals are injected into MDACs of the two channels, a first output code and a second output code are obtained, and gain error correction is carried out according to the first output code and the second output code; constant differential voltage is injected into the input end of the reference channel, so that the rest transmission curve translates transversely; and simultaneously sampling an input signal by using the output channel and the reference channel to obtain a third output code and a fourth output code, and carrying out capacitor mismatch correction according to the third output code and the fourth output code. According to the invention, the inter-stage gain error of the output channel is rapidly corrected by using the reference channel, and the capacitor mismatch correction object does not contain the capacitor mismatch of the reference channel, so that the area and power consumption of the correction circuit can be reduced.

The invention relates to the technical field of laser optical devices, in particular to a saturable absorber testing system and method, and the system comprises a laser which is used for transmitting a pulse optical signal with a specific wavelength; the optical amplifier is used for receiving and amplifying the pulse optical signal transmitted by the laser; the adjustable attenuator comprises a half slide and a polarization beam splitter; wherein the half slide is used for changing the polarization direction of incident ray polarized light, so that an amplified optical signal input into the adjustable attenuator is subjected to adjustable attenuation of a specific degree when passing through the polarizer and the beam splitter; the to-be-tested sample placing device is used for placing a to-be-tested saturable absorber sample; the optical power meter is used for measuring the optical power intensity before and after the optical signal passes through the to-be-measured sample in the path; the signal processing unit is used for processing data to obtain a nonlinear transmission curve of the saturable absorber sample, the optical path structure of a traditional test system is optimized, and the influence of dispersion in a test optical path on a measurement result is effectively reduced.

The present invention relates to the technical field of optimized dispatching of power transmission from a new energy base, and in particular to an optimized dispatching method, device, equipment and medium considering power transmission from new energy bases. The method includes: establishing a joint peak-shaving dispatching strategy of pumped storage and thermal power; establishing a hierarchical optimization dispatching strategy according to the joint peak-shaving dispatching strategy, wherein the upper layer of the hierarchical optimization dispatching strategy takes the minimum volatility of the base transmission curve as the objective function, and establishes dispatching constraints based on the operating characteristics of the pumped storage unit; the lower layer takes the maximum wind and solar output of the base as the objective function, and considers dispatching constraints based on the stability of DC transmission and the stability of the operation of the power grid at the sending end; estimates the frequency safety margin through linear constraints, and establishes a hierarchical optimization dispatching model based on the objective function and constraints in the hierarchical optimization dispatching strategy; solves the hierarchical optimization dispatching model to obtain an optimized dispatching method. In the present invention, the utilization of wind and solar power resources is maximized, while ensuring the safe and stable operation of the power grid.

The present application belongs to the technical field of frequency selective surface design, and particularly relates to a FSS angle stability improvement method, system, device and medium based on an equivalent circuit model; the method first builds an equivalent circuit model of a FSS with a known structure, optimizes the equivalent circuit model parameters of the FSS by using a multi-objective particle swarm optimization method, so that the equivalent circuit model of the FSS meets the target electrical performance, and then collects transmission curve data sets under normal incidence and other angle incidence conditions by using simulation software, and then trains a full connection type neural network by using key feature points of the transmission curve and corresponding FSS structure parameters, to obtain a trained full connection type neural network; finally, the key feature points of the target transmission curve are input into the trained full connection type neural network for inversion prediction, to obtain FSS target structure parameters corresponding to the target transmission curve; the method has the advantages of short optimization cycle, reduced time and calculation resource waste, and high generalization versatility.

The invention provides an optical film thickness real-time brightness value fitting method and system and a monitoring system and method, and is applied to the technical field of optical film thickness monitors and stop judgment in the film plating process. According to the optical film thickness real-time fitting brightness value formula, real-time synchronous fitting is carried out on a transmission curve of film thickness monitoring, a film thickness extreme point and a plating stopping point corresponding to the target thickness are calculated, stopping judgment processing is carried out, effective and accurate stopping judgment processing of the system is achieved, the precision of the monitoring system is larger than 99.5%, and therefore the optical film thickness real-time fitting brightness value formula can be used for real-time fitting of the optical film thickness. The control precision and the stop judgment accuracy are improved on the original basis, and the method can be more widely applied to various coating scenes and shows higher practicability and universality.

Embodiments of the present disclosure are focused on systems and methods for enhanced management of transmission profiles within a communication network. The disclosure includes the continuous monitoring of signal to interference plus noise ratios (SINR) and throughput for the UE operating within the coverage area of the base station. Upon the detection that the SINR falls below or surpasses a dynamically adjustable pre-determined threshold, the transmission profile of the UE is dynamically adjusted. The UE can switch between a two-antenna transmission profile and a four-antenna transmission profile, depending on the SINR, ensuring optimized communication within the network.