32 results about "Light curve" patented technology

A lighting device comprising first and second groups of non-white light sources emitting light outside a first area on a 1976 CIE Chromaticity Diagram bounded by a curves 0.01 u′v′ above and below the blackbody locus and within a second area enclosed by saturated light curves from 430 to 465 nm and from 560 to 580 nm and segments from 465 to 560 nm and from 580 to 430 nm and a supplemental light emitter in the range of 600 to 640 nm. Also, a lighting device, comprising a first string of non-white phosphor converted light sources with excitation sources having dominant wavelengths that differ by at least 5 nm, a second string of non-white light sources, and a third string of supplemental light emitters in the range of 600 to 640 nm.

The invention discloses a photogrammetric method for track alignment detection of a railway track. When a track detection trolley is moved forwards, a track surface camera collects a single track picture existed with fixed geological distortion at a certain distance, and performs geological correction, matching and assembling on the picture, thus a two-dimensional long track picture is obtained; the edge detection is performed on the long track picture, thus an inner edge of the long track is preliminarily obtained. A linear structural light source emits a laser plane from the longitudinal axis direction of a vertical steel rail, and the laser plane forms a light curve capable of reflecting the outline characteristics of the steel rail on the steel rail surface; the track side camera takes a picture of the optical curve at a certain distance. The picture obtained by the track side camera is performed with light bar thinning, steel rail outline restoration and outline matching of the steel rail; a fat edge value of the steel rail outline is calculated, the inner edge of the long track at corresponding position is compensated according to the calculated fat edge value, thus the inner edge of the long track at 16 mm downwards the track surface is obtained. According to the inner edge of the long track, the two-dimensional coordinate is set up, thereby obtaining the coordinate of every point on the edge; namely, the track direction with any chord length at every place of the railway track can be calculated.

The invention discloses a long short-term memory network (LSTM)-based astronomical big data optically variable curve abnormity detection method. The method aims to solve the problem that the abnormityof an optically variable curve in astronomical data is difficult to detect due to the instantaneity of the abnormity. According to the method, a large amount of optical variable curve data obtained through observation of a GWAC serve as a training sample and a test sample, meanwhile, a neural network formed by linking LSTM units is constructed, and a network model is trained continuously, so thatan output value obtained in a special mode of the network is obtained. According to the method, the weight of each unit is continuously updated through iterative training, so that the overall situation is optimal. After the training is finished, the next prediction value of the sample sequence can be obtained only by inputting the test sample into the network.

The invention is a photoelectric detection method for a satellite fault in a geostationary transfer orbit. The method comprises: acquiring a light curve of the satellite in the geostationary transfer orbit by an optical telescope detection system; obtaining an OCS value of a target through analyzing a phase angle sequence light characteristic curve, to evaluate the unfolding state of a solar panel of the satellite; obtaining an angular spin rate of the target through analyzing a time sequence light characteristic curve, to evaluate satellite platform attitude control capacity; and evaluating satellite platform attitude regulation and control capacity through accumulating multi-circle satellite phase angle sequence light characteristic curve, so as to evaluate satellite fault state and provide possibility of rescuing the satellite in time. The method does not depend on a sensor and downlink communication data of the satellite system, and has the property of passive receiving, and characteristics of high sensitivity, high precision, long detection distance, capability of observing in real time, quick data processing and so on.

The invention relates to a spatial moment based line structured light center extraction method and belongs to the field of laser light ray center extraction methods in the visual and three-dimensional measurement of line structured light. According to the method, an ideal normal equation for a place where an edge point is located is obtained through the gray-level gradient vector of the edge point of a light ray, and one direction, closest to an ideal normal direction, of eight directions of a bisect coordinate system serves as an actual normal direction of a light ray curve, so that a light ray section passing through the actual normal of the edge point and the light ray is obtained. According to the method, an adopted light ray section selection method can better adapt to the drastic change of light ray curvature and can guarantee that pixel points in the light ray section are distributed uniformly, and a closed analytic formula for solving the coordinate of a light ray center point based on spatial moment theory is given and established. According to the method, when a phenomenon that the gray level of the center of the light ray is saturated occurs, serious detection errors cannot appear, so that the aspects, such as the timeliness and accuracy of detection results and the robustness to errors, surpass those of the traditional methods.

The invention discloses a calibration method for circular structured light. The method comprises steps that a calibration plate and a to-be-calibrated circular structured light cone surface are arranged in an intersected mode, and a structured light curve generated because of intersection of the circular structured light cone surface and the calibration plate is made to appear on the calibration plate; on the basis of maintaining intersection of the calibration plate and the to-be-calibrated circular structured light cone surface, moving the calibration plate, N corresponding structured lightcurve pictures are shot; mark points of the calibration plate are utilized to calibrate internal parameters of the camera and external parameters of the camera relative to each structured light curvepicture, and a light curve discrete point coordinate corresponding to each structured light curve picture is solved; all the light curve discrete point coordinates are utilized to carry out non-linearfitting to acquire a circular structured light cone surface equation, and each parameter of the to-be-calibrated circular structured light cone surface is solved. The method is advantaged in that therelated device structure is simple, the method is easy for realization, and cost is relatively low.

The invention provides a local active phase compensating system and method and relates to the field of quantum cryptographic communication. According to the local active phase compensating system and method, due to the fact that the process of obtaining interference ring working points of a signal sending terminal is completely completed locally and determination of temporary working points of a signal receiving terminal is also completely completed locally, scanning result transmission in classic channels is avoided, EVE cannot obtain phase information, and the system safety is improved. Intense light curves are scanned in the local compensation and united compensation process of the signal sending terminal and the signal receiving terminal, scanning time is shortened, and the information duty ratio is improved.

The invention discloses an online analysis and abnormity alarm method and an online analysis and abnormity alarm system for a light curve. Online abnormity alarm of the light curve can be realized. The method comprises the following steps: obtaining the light curve of a to-be-analyzed star; for each sample point in the light curve, calculating characteristic statistic amounts of a long time window and a short time window corresponding to the sample point, calculating a preset normalized variable value according to the characteristic statistic amounts, substituting the normalized variable value in a discrimination function to calculate a discrimination function value, judging whether the light curve needs to be matched with a series of preset template curves according to the discrimination function value, if the light curve needs to be matched with the template curves, normalizing the light curve, matching the light curve with the template curves, and calculating the difference between each normalized light curve and each template curve by using a dynamic time warping algorithm, and if a difference is determined to be smaller than a specified threshold, triggering alarm, and otherwise, not triggering the alarm.

The invention provides a method for performing temperature calibration on the scene of pipeline leakage monitoring. Calibration points are selected on the whole link of a sensing optical cable to be measured, single point temperature calibration is performed on the calibration points in turn, and each calibration point obtains a set of actually measured temperature values and a set of standard temperature values; the backward Raman scattering light curve data of the whole link of the sensing optical cable to be measured are read, polynomial fitting is performed with the calibration points acting as endpoints for segmentation and a section trend term function is acquired, and the standard temperature values of all the calibration points are imported according to the section trend term function so that temperature calibration of all the points of the sensing optical cable to be measured is completed; and a temperature calibration table for the whole link of the sensing optical cable is generated through integration. The blank of DTS project scene temperature calibration can be filled, operability and convenience of the method are proved through actual application and thus the method has high practical value.

The cellular LED light is made of the LED and the boy, with the major part of the light curved or flat for the surface of the LED light base. The light is covered with small interior and big exterior conical or polyhedron pit or through holes with reflective or shimmering coating that can reflect or gather light. LED is inserted at the bottom of the pit, with the LED on the light base either in serial, or in parallel, or the combination of serial and parallel. The LED part is connected to the intelligent controller, time switch or light control switch. The light base plate is set on the light shell with heat emission function. This light is controllable in luminance and convenient in use. It is an ideal substitute for indoor lights and street lamps with fine heat emission and long durability.

The invention provides a method for using laser feedback to ascertain the enlarged dash with high accurate, which rotates the laser light source or plane interface opposed dash point to enlarged dash 0 deg. location along the enlarged dash reducing direction and keeps the light beam in the same dash surface when rotating it, it measures the reflecting light curve which is changed with the change of the enlarged dash; it spreads out the curve on the drawing software in the range of 0 deg., the laser feedback makes the output light intensity to generate flucticulus, it ascertains the wave bottom point as 0 deg. reference angle; it then uses the displacement of one point relative to 0 deg. reference angle to multiply with the length to obtain the corresponding enlarged dash.

The invention discloses a GWAC (Ground-based Wide-Angle Camera array) light curve anomaly detection method based on a Grubbs criterion and ARIMA, which comprises steps: the Grubbs criterion is used to filter the GWAC light curve, and doubtful values are selected; the doubtful values selected through the Grubbs criterion are subjected to stability test, unstable data are subjected to differential to become a stable sequence; the finally-stable data are predicted through an ARIMA model; if a differential sequence is predicted, restoration is carried out, and a prediction value for the doubtful value is obtained; data before the current doubtful value of the sequence are subjected to the same prediction, the average value for prediction errors is solved as a prediction error standard to be compared with the prediction value for the doubtful value, and whether to be an abnormal value for the light curve is finally judged. By adopting the technical scheme of the invention, the light curve formed by brightness of astronomical stars observed by the GWAC is detected, and abnormal stars can be found out.

The invention discloses a photomagnetoelectric complementary energy collecting type solar furnace and belongs to the novel field of the electromagnetic application and the vacuum superconduction heat transmission technology. The solar furnace comprises a light fusion solar furnace which is formed by a transmission light curved surface light concentrating kettle, a reflected light butterfly type light concentrating kettle, a vacuum energy collecting reaction kettle, an annular vacuum pipe beam and a heat storage pot and a single-stage or multi-stage strong magnetic rotational flow automatic electric heating device; preheating water is provided for the single-stage or multi-stage strong magnetic rotational flow automatic electric heating device through a water supply coil pipe and a water return coil pipe; the strong magnetic rotational flow automatic electric heating device comprises a single-stage or multistage random combined multi-wing spiral, a mouse cage, a multi-wing windmill and multi-wing spiral cage combined body, a multi-wing windmill mouse cage combined body and an externally arranged water supply pump thereof and a electromotor which are arranged inside a strong magnetic body ring and a high-intensity magnetic field working cylinder internal chamber of a magnetic insulating protective sleeve; the magnetic insulating protective sleeve covers the external layer of the strong magnetic body ring; jet power of the water supply pump is provided through a pipe network; slant jet holes which are benefited to communication between slant ejecting holes which form spiral rotational flows are formed between stages. The solar furnace initiates updating technology and products for life heating and integrated solar thermal power plant carbon-free rapid heating.

The invention discloses a light change curve classification method based on a support vector machine, which comprises the following steps: Step 10) collecting light change curve data and light changecurve types; Step 20) preprocessing the collected light change curve data; Step 30) constructing a data set to be analyzed according to the preprocessed light change curve data, and dividing the dataset into a training set and a test set; Step 40) setting kernel function and punishment coefficient of the support vector machine, training initial classification model by using the constructed training set to obtain the trained classification model, testing the correct rate of the trained classification model by using the constructed test set, and taking the trained classification model whose correct rate reaches the set threshold value as the final classification model; Step 50) classifying the light curve by using the final classification model. The method has strong anti-interference ability to the noise signal, more accurate classification, and can detect the abnormal light curve type at the same time.

The invention discloses a waste drilling fluid solid-liquid separation assessment method. The method is characterized in that a Turbiscan Lab dispersion stability analyzer is adopted for assessment of waste drilling fluid solid-liquid separation effects. The method includes steps: a, taking waste fluid in set volume as a sample, and adding a gel breaker into the sample; b, stirring the sample for 30min; c, taking an appropriate amount of the sample, adding into a multiple light scattering scan test tube, and adopting the Turbiscan Lab dispersion stability analyzer for measuring transmission light and reflected light curves; d, analyzing solid-liquid separation effects according to the measured transmission light and reflected light curves. Compared with conventional methods for measuring waste fluid water loss, waste fluid particle diameter, mud cake moisture content and the like, the method has advantages of accuracy of measurement results and comprehensiveness in reflection of supernatant and lower turbid fluid changes in a whole solid-liquid separation process.

The invention discloses an optical variable curve abnormity detection method, and aims to solve the problem that the anomaly phenomenon of an optical variable curve in astronomical data is difficult to detect due to the instantaneity of the anomaly phenomenon and improve the robustness of a model to future observation data. The method comprises the following steps: acquiring time and brightness ofoptical variable curve data to serve as a historical time sequence; carrying out data preprocessing and feature engineering on the obtained data, and respectively constructing a training set and a test set; building a model by using a GRU neural network, respectively adding a Dropout optimization method and a BN optimization method, adjusting network hyper-parameters by using a grid search methodto obtain two sub-models, and performing hybrid optimization according to precision and stability to obtain a final model; and performing prediction by using the trained model, outputting a prediction sequence, and performing optical variable curve abnormity detection by using a Grubbs method.

The invention relates to an optical lens and an optical lens plate. The optical lens comprises an incident light curve, a cone and an emergent light curve. Lights emitted by a light emitting diode pass through the incident curve, the cone and the emergent light curve to have a first refraction angle on a first plane, and to have a second refraction angle on a second plane. The first refraction angle is in an interval of 105-145 degrees, and the second refraction angle is in the interval of 38-65 degrees, wherein lights are asymmetrically distributed on the second plane. Therefore, utilization ratio of lights on road ends can be increased when the optical lens is applied to road lamps.

The invention belongs to the field of ground-based optical observation, and discloses a method for calculating the size of a satellite body based on a light curve. The method includes the following steps: obtaining high-precision satellite luminosity information through observation; obtaining the visual relationship of illumination through orbit calculation and attitude calculation; observing data Usability inspection; satellite body size calculation. This method overcomes the insufficiency of radar means to observe satellites in medium and high orbits, and proposes a method to obtain the size of the satellite body by using the optical telescope observation system to obtain its length, width and height parameters. The invention can be rapidly popularized and applied to existing ground-based photoelectric detection equipment in my country, and can form a certain satellite body size determination capability without hardware modification.

The invention discloses a photogrammetry method for railway track direction detection. As the rail inspection car moves forward, the track surface camera collects single-track images with fixed geometric distortion at certain distances, and performs geometric correction, matching, and splicing on the images to obtain a two-dimensional long rail image. Edge detection can initially obtain the inner edge of the long rail. The linear structure light source emits a laser plane from the direction perpendicular to the longitudinal axis of the rail. The laser plane forms a light bar curve on the surface of the rail that can reflect the contour characteristics of the rail. The rail-side camera captures the light bar curve at intervals. The images acquired by the rail-side camera are subjected to light stripe thinning, rail contour restoration and rail contour matching, and the fat edge value of the rail profile is calculated. According to the calculated fat edge value, the inner edge of the long rail at the corresponding position is compensated, thus obtaining The inner edge of the long rail 16mm below the rail surface. According to the inner edge of the long rail, two-dimensional coordinates are established to obtain the coordinates of each point on the edge, and the track direction of any chord length anywhere on the railway track can be calculated.

The invention provides a space-based multi-mode extrasolar terrestrial planet comprehensive detection method. The method comprises steps that the orbital period, the near-star-point angular distance, the ascending node position angular longitude, the near-star-point moment, the orbital dip angle and the planet radius of a planet are obtained through a star masking light curve fitting model JKTEBOP; through on-orbit long-time exposure and a large-aperture telescope, a planet is detected by adopting a radial velocity method, and planet parameters are obtained; on the basis of confirming existence of a terrestrial planet by a radial velocity method, precision spectrum and polarization detection on extrasolar planet atmosphere are carried out to obtain a structure sample, main characteristic spectral lines are covered, and inversion of planet physical and chemical characteristics is carried out according to the structure sample; near ultraviolet and far ultraviolet signals of a sky area are acquired through the ultraviolet sky patrol detector, ultraviolet background radiation is obtained, and inversion and research are carried out on the ground. The space-based multi-mode extrasolar terrestrial planet comprehensive detection method is powerful in function and novel, and is a new method and a new thought in the extrasolar terrestrial planet detection field.

The invention discloses a photomagnetoelectric complementary energy collecting type solar furnace and belongs to the novel field of the electromagnetic application and the vacuum superconduction heat transmission technology. The solar furnace comprises a light fusion solar furnace which is formed by a transmission light curved surface light concentrating kettle, a reflected light butterfly type light concentrating kettle, a vacuum energy collecting reaction kettle, an annular vacuum pipe beam and a heat storage pot and a single-stage or multi-stage strong magnetic rotational flow automatic electric heating device; preheating water is provided for the single-stage or multi-stage strong magnetic rotational flow automatic electric heating device through a water supply coil pipe and a water return coil pipe; the strong magnetic rotational flow automatic electric heating device comprises a single-stage or multistage random combined multi-wing spiral, a mouse cage, a multi-wing windmill and multi-wing spiral cage combined body, a multi-wing windmill mouse cage combined body and an externally arranged water supply pump thereof and a electromotor which are arranged inside a strong magnetic body ring and a high-intensity magnetic field working cylinder internal chamber of a magnetic insulating protective sleeve; the magnetic insulating protective sleeve covers the external layer of the strong magnetic body ring; jet power of the water supply pump is provided through a pipe network; slant jet holes which are benefited to communication between slant ejecting holes which form spiral rotational flows are formed between stages. The solar furnace initiates updating technology and products for life heating and integrated solar thermal power plant carbon-free rapid heating.

The invention discloses a liquid phase epitaxy preparation method of multilayer embedded structure GaSb quantum dot materials. The method includes: growing a layer of GaSb quantum dot materials on a 100-orientation GaAS substrate, growing a layer of GaAs cover to passivate and protect the layer of GaSb quantum dot materials, and repeating the cycle for at least three times to form the GaSb quantum dot materials with the multilayer embedded structure. The method has the advantages that the liquid phase epitaxy technology is low in cost and simple to operate as compared with other growing technologies; compared with the single-layer quantum dot structure, the quantum dot PL lighting performance of the multilayer quantum dot structure is improved greatly, the half-peak width of the same is reduced, and the lighting curve of the same is smooth.

The present invention relates to an LED drive circuit for adjusting current in a full range and correcting dimming curve, including a filter circuit 1, a signal processing circuit, and an LED constant current drive circuit, characterized in that the signal processing circuit includes a voltage reference circuit, a filter circuit 2 and The dimming curve correction circuit; the LED constant current drive circuit includes a delay start circuit, a DC / DC conversion circuit, a feedback circuit and a filter circuit 3 . The advantages of the present invention are: full hardware analog circuit, simple circuit structure, adjustable output current, achievable dimming range of 1% to 100%, conforming to visual man-machine effect, good electromagnetic compatibility, and resistant to various environments and climates Etc. It can be popularized and applied in lighting fields of various fields and industries.