32 results about "Light curve" patented technology

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 discloses a patch lamp bead and electric conducting circuit bent corn lamp. The patch lamp bead and electric conducting circuit bent corn lamp is manufactured by the method steps of (a)mold pretreatment, (b) secondary punching, (c) bending: the one-standing and one-moving bending is performed; one standing: a static cutting board is arranged on one side of a rotary bending axis; a row of lamp beads and electric conducting metal among the lamp beads are pressed on the cutting board; and pressing pieces are pressing bars continuously spaced and with the heights of the lamp beads as step heights and bonded with rubber pad layers on the contacted surfaces; and one moving: a rotary bending plate is arranged on the other side of the rotary bending axis, and performs a rotary bending motion with the rotary bending axis as shaft; (d) assembly and light source molding, and (e) inner and outer insulation. An attachment heat dissipating plate of an aluminum substrate or a glass fiber plate or a flexible plate is saved, so that the production process and the production cost are greatly reduced; the process difficulty of mold opening through LED energy saving lamp punching and the like is reduced, so that later procedures of the production process are guaranteed; and the LED energy saving lamp bending and assembly processes are more precise to guarantee the product quality.

The invention discloses a flatness detection method based on image processing and image recognition. Two inline lasers are respectively installed above the north-south direction and east-west direction of the measured object, so that they irradiate the measured plane according to a certain angle. up, forming a cross. A camera is installed in the vertical direction of the plane, and the camera is facing the detection plane. The relative position of the camera and the laser remains constant. The measured object runs at a certain speed, making the light cross slide over the measured plane. A robust illumination curve is obtained through image refinement, light point correlation, and local curve fitting. Then through the analysis of the optical path, the relationship between the flatness and the image illumination curve is obtained, and the plane convex / concave amount is calculated by the distance and direction of the image illumination curve deviating from the reference straight line. Finally, the flatness detection linear array is formed from multiple images, and the flatness in different directions is calculated by curve fitting.

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 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 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 provides a method for temperature calibration at the site of pipeline leakage monitoring. In order to select calibration points on the entire link of the sensor optical cable to be tested, single-point temperature calibration is performed on the calibration points in turn, and each calibration point obtains a set of actual measurements. temperature value and a set of standard temperature values; read the back Raman scattered light curve data of the entire link of the sensing optical cable to be tested, and perform polynomial fitting with the calibration point as the end point to obtain the section trend function, according to the The section trend item function is used to import the standard temperature value of each calibration point to complete the temperature calibration of all points of the sensing optical cable to be tested; the integration generates the temperature calibration table of the entire link of the sensing optical cable. It fills the blank of on-site temperature calibration in DTS engineering, and the practical application proves the operability and convenience of the method of the present invention, and has high practical value.

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 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.

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.