199results about How to "Guaranteed corrective effect" patented technology

The invention relates to a method for tomographically displaying a cavity by optical coherence tomography (OCT) and to an OCT device, wherein the path length of a measuring light beam in the catheter can change as a result of a movement of the catheter and brings about a change in the display scale, wherein a possible change in the path length of the measuring light beam in the event of a movement of the catheter is electronically determined and automatically compensated.

The invention discloses a system and a method for on-site point-by-point calibration of the brightness and chrominance of the whole screen of an LED display screen. The system comprises LED display screen optical parameter acquisition equipment, display screen calibration parameter processing equipment, display screen signal input control and parameter transmission equipment and display screen calibration operation and screen control equipment. The method comprises the following steps: acquiring image data of information on original red, green and blue values of a single point in the lightened part of the LED display screen and values of actual brightness and colors when single colors of red, green, blue and while are displayed; and determining the calibration coefficients of the single point to realize calibration. The method acquires data by in a way of uniformly distributing the luminous points of the display screen in arrays which have the same point number and shape and alternately distributed at equal intervals, thereby avoiding clear horizontal and vertical patterns which use an acquisition area as a unit and are caused by the jump of regional edge calibration data when an original suborigin acquires data and interference among adjacent points caused by reduced pixel pitch and ensuring the calibration effect.

The invention discloses a low-speed wind tunnel thrust vector balance calibrating device, and the device comprises an external loading sleeve (3), a connection taper sleeve (4), a ventilation external tube (11), a valve (6), an o-shaped ring (14), a thrust vector balance sealing pipe (30), and a connection structure (23). The thrust vector balance sealing pipe (30) comprises a ventilation straight pipe (12), a corrugated pipe (8), a ventilation casing pipe (10), a sealing cover (7) and a small nozzle (13), wherein the parts between all connection parts of the thrust vector balance sealing pipe (30) are sealed. The device can achieve the inflation calibration, simulate the actual working state of the balance, correct the impact on a thrust vector balance from the corrugated pipe (8), and enable the measurement precision of the balance to be improved.

A system, apparatus and method provide a means for indicating an overload condition has occurred during aircraft operation. The occurrence of an overload condition is automatically determined and an indication output thereof. Based on the indication received by the cockpit, avionics, maintenance, etc., further action may be taken to correct the effects of the overload condition on the tires and / or landing gear.

The invention discloses a high-sensitivity alpha energy spectrum measuring method of radon concentration in air by using a radon and daughter collecting device, an alpha ray semi-conductive detector, a temperature and humidity measuring module, a circuit system, a man-computer interface and a computer data analysis system. The sensitivity surface of the alpha ray semi-conductive detector is arranged in a cavity of the radon and daughter collecting device, and the alpha ray semi-conductive detector, the temperature and humidity measuring module and the man-computer interface are connected with the circuit system which is connected with the computer data analysis system through a USB (Universal Serial Bus) interface. The method collects radon in the air by adopting a static diffusion mode, absorbs radon charged daughters by adopting a high-pressure electrostatic mode, distinguishes radon-thorium daughters by utilizing the alpha ray semi-conductive detector to measure air radon concentration through alpha energy spectrum measurement and correct influence on the measurement of radon concentration by adopting a temperature-humidity synchronous measuring mode. The method is suitable for the fields of monitoring radon level and controlling pollution in the indoor radiation environment of civil constructional engineering, monitoring radon concentration in mines and tunnels, and the like.

The invention provides a method of reconstructing the OCV-SOC function relation of a power battery system. The OCV-SOC function relation can be acquired quickly and effectively. Compared with the traditional open-circuit voltage test method, a lot of test time is saved, and the method is suitable for various different power batteries including lithium iron phosphate batteries and is more universal. Moreover, the OCV-SOC function relation correction role can be better ensured, and the robustness of the state estimation algorithm can be improved.

The invention discloses an evaluation method of the tooth profile deviation of an involute cylindrical spur gear under the influence of installation error. Firstly, establishing a machine coordinate system O0-X0Y0Z0 to measure the tested gear under the machine coordinate system. The measuring positions include the upper and lower section points of the measured gear mandrel, upper end of the gear and the measuring point of the tooth profile, so that the tooth profile measuring point under the influence of the installation error is obtained. According to the two cross-section points of the mandrel under the machine coordinate system, conducting the least-square circular fitting to work out rotating shaft equation to establish the coordinate system O1-X1Y1Z. The tooth-profile measuring pointis restored to the initial position and the error of the rotation axis of the tooth-profile measuring point is corrected. The least-square plane fitting is performed on the measuring point on the upper end face of the measured gear, and the coordinate system O2-X2Y2Z2 is established with the normal vector direction of the upper end face of the measured gear being the Z2 axis with the aim of correcting the inclination error of the tooth-profile measuring point. Finally the influence of the installation error on tooth profile deviation evaluation is corrected based on the tooth profile deviationvalue worked out by calculating the rotation angle to the measuring point of the design tooth profile around gear base circle center.

The invention, which belongs to the field of infrared image processing, specifically discloses a local-correlation-based infrared image stripe noise removing method. The method comprises: an expected output value of a pre-corrected pixel point is calculated by one-dimensional horizontal mean filtering; an anticipated output of the pre-corrected pixel is calculated, the pre-corrected pixel point is corrected by using a correction parameter corresponding to one pixel point at the pre-corrected pixel point to obtain an anticipated output; under the circumstance that the quadratic sum of the difference of the expected output and the anticipated output is minimized, adaptive adjustment of the correction parameter is realized by using an inter-column iterative way; the pre-corrected pixel point is corrected by using a new correction parameter; and a next pixel point at a same row is corrected until one frame of image is corrected completely. Therefore, the adjacent element of the current pixel point only needs to be cached and one frame of image does not need to be stored for calculating the statistic characteristic of the image; and with combination of inter-column local correlation of the stripe noise, stripe noise removing of the single-frame image can be realized. The infrared image data flow-line characteristic can be realized well.

The invention discloses a spacecraft attitude estimation method based on norm-constrained cubature Kalman filter. The method comprises the following steps: a state equation of a spacecraft navigation system is established; a non-linear measurement equation of the spacecraft navigation system is established; a discretized state equation and a discretized measurement equation are obtained; a norm-constrained cubature Kalman filtering algorithm is used for the discretized state equation and the discretized measurement equation, and an attitude of the spacecraft is outputted. The norm-constrained cubature Kalman filter is used, norm constraint of quaternion for describing the spacecraft attitude is introduced into the attitude estimation, so that the problem of singular covariance existed in the process of attitude estimation without considering norm constraint is effectively solved, the influences of norm constraint conditions of quaternion on the spacecraft attitude estimation are effectively corrected by only adding small computational complexity, precision of attitude estimation is improved, navigation precision of the spacecraft is furthermore improved, and stability of the navigation process is enhanced.

An optical proximity effect correcting method in a semiconductor manufacturing process includes adding, detecting, judging, and deleting. The adding includes adding a first correcting region around a portion of a first design pattern. The portion faces a second design pattern. A first corrected design pattern includes the first correcting region and the first design pattern. The detecting includes detecting a space between the first corrected design pattern and the second design pattern. The judging includes judging whether the space is smaller than or equal to a predetermined value. The deleting includes deleting at least a portion of the first correcting region such that the space is larger than the predetermined value, when the space is smaller than or equal to the predetermined value.

The invention discloses a method and device for detecting chlorophyll of a coastal zone water body in situ through a double optical path method. According to the method, the concentration of chlorophyll alpha is detected on line on the basis of a fluorescence method detection principle by directly measuring the fluorescence intensity; the device is composed of a light source module, a measuring module, a reference module and a signal processing module. Under excitation of an LED light source, the intensity of fluorescence emitted by the chlorophyll is measured, and the chlorophyll concentration of the coastal zone water body to be detected is calculated through a linearly dependent coefficient calculated by a system model and a compensation value for correcting yellow matter CDOM. The device can quickly detect the concentration of the chlorophyll in the water body on site in real time in a large area and is small in weight and size, convenient to carry, high in accuracy and sensitivity, easy to operate, low in cost and capable of being applied to multiple detection fields.

The invention discloses a method for withstanding false targets on the basis of a station's position error fusion algorithm, and mainly solves the problems that station's position error factors are not considered when false targets are withstand in the prior art, so that detection results are inaccurate. According to the scheme, the method comprises the following steps: 1, measuring a target by a node radar; 2, carrying out coordinates transformation on measured values to obtain the position information of the target in a uniform rectangular coordinate system; 3, calculating to obtain a positioning error covariance matrix of the target through the position information of the target in the uniform rectangular coordinate system; 4, matching the measured values by a nearest neighbor association method to obtain an associated measurement sequences; and 5, combining the measured values in all the associated measurement sequences in pairs, calculating the mahalanobis distance between each two measured values through the positioning error covariance matrix of the target, carrying out hypothesis testing on the mahalanobis distances, and getting rid of false targets to finish identification of real targets and false targets. By the method, the correct identification probability of the rear targets is improved, and therefore, the method can be used for detecting or tracking targets.

The invention provides a phosphating solution online-monitoring and automatic-supplementing apparatus. The apparatus comprises a work tank or a circulation tank, a measuring pool, a concentrate pool and pipelines, and the work tank or the circulation tank is connected with a metering pump to the concentrate pool through a pipeline; the work tank or the circulation tank is connected to the measuring pool through a pipeline; the work tank or the circulation tank is connected with a condenser through a pipeline, the condenser is connected with a sampling pump, and the sampling pump is connected to the measuring pool through a float flow meter; and a temperature sensor and a pH probe are arranged in the measuring pool, and the measuring pool is connected to a control portion through a pH meter and a communication line. The online monitoring and automatic supplementing of a phosphating solution are realized through adopting a real-time control technology. The apparatus which allows the fluctuation of technological indexes of the phosphating work tank solution to be controlled in a small range guarantees the product quality stability, increases the labor efficiency and improves the labor environment of workers.

The invention provides a pneumatic optical effect corrector based on a self-illuminating wavefront sensor. The corrector comprises a self-illuminating wavefront measuring instrument, an image collector, and a processor. The self-illuminating wavefront measuring instrument is used to transmit a collimated laser beam, receives a distorted wavefront generated after diffusion light of the collimated laser beam diffused by atmospheric particles is subjected to optical effect, and extracts a deviation parameter of a distorted wavefront. The image collector is used to receive target light wave carrying an original image of a target region and perform image processing of image data of the original image to obtain a real image of the target region. The processor is used for deconvolution operation on the deviation parameter and the real image of the target region to obtain a reconstructed image of the target region. The corrector reconstructs a laser distortion source to effectively measure in real time the wavefront distortion caused by pneumatic optical effect, so that the precision and accuracy of wavefront distortion measurement are both high, and thus good correction effect and practicality of the system are further guaranteed.

The invention provides an inhomogeneous fast noise correction apparatus and correction method of a TDI CCD imaging system, and belongs to the field of remote sensing imaging. The problems of high cost, low efficiency and long time consumption of the existing correction system are solved. The correction apparatus comprises: TLK2711 receives image data output b the TDI CCD imaging system; an FPGA caches the image data and calculates an average gray response value of the image data and analyzes a correction parameter by using a real-time automatic normalization method; the correction parameter is sent by 1553B, RS422 or CAN to the TDI CCD imaging system, the TDI CCD imaging system shoots homogeneous light signals under the current correction parameter and feeds back the output data to the FPGA through the TLK2711 so as to realize the closed loop adjustment of the correction parameter; and a display terminal receives the corrected image data output by CAMERALINK output after. The inhomogeneous fast noise correction apparatus has the advantages of low cost, high efficiency, time saving and labor saving.

The invention provides a two-section-type righting electric pole correction device comprising a worktable, a first righting arm, a first jack pushing the first righting arm, a second righting arm and a second jack pushing the second righting arm. The bottom of the second righting arm is fixed on the worktable; the top of the second righting arm is rotationally connected with one end of the first righting arm, and the other end of the first righting arm abuts against an electric pole; the first jack is operated to push the first righting arm so as to achieve first-section righting of the electric pole; and the second jack is operated to push the second righting arm, and the second righting arm pushes the first righting arm to achieve second-section righting of the electric pole. The working stroke of the electric pole correction device is increased to remedy the defect of the short strokes of the jacks, and the application range of the electric pole correction device is widened; and by righting the electric pole for the two times, the accuracy of electric pole righting is improved, and the correction effect of the electric pole is guaranteed.

A spectroscopic method and spectroscopy system therefrom for analyzing samples. A sample includes a first chemical component that has a characteristic first absorption peak is provided. The sample is irradiated in a measurement waveband proximate to the first absorption peak, and at a first and a second reference waveband where the first chemical component lacks characteristic absorption features. Reflected or transmitted detection data is obtained including a measured power proximate to the first absorption peak and first and second reference powers at the reference wavebands. A plurality of different waveband ratios are evaluated using pairs of detection data to generate a plurality of measured waveband ratio values. A parameter of the first chemical component is then determined by evaluating a multidimensional polynomial calibration equation that relates the parameter of the first chemical component to the plurality of different waveband ratios by substituting the measured waveband ratio values into the calibration relation.

The invention relates to a weight detection device, in particular to an ice coating detection device for a cable. The ice coating detection device comprises a fiber grating wavelength modulator, an optical divider and a fiber grating weighing sensor, wherein the fiber grating wavelength modulator is connected with the optical divider through a signal transmission optical cable; the optical divider is connected with the fiber grating weighing sensor through a signal transmission optical cable; the upper end of the fiber grating weighing sensor is fixedly suspended, and the lower end of the fiber grating weighing sensor is connected with the cable; an elastic body is arranged in the middle of the fiber grating weighing sensor; the elastic body is provided with the fiber grating sensor; a broadband light source is arranged in the fiber grating wavelength modulator; the broadband light source is transmitted to the fiber grating sensor through a signal transmission optical cable; the fiber grating sensor is used for transmitting a wavelength signal of reflected light of the broadband light source to the fiber grating wavelength modulator; and the fiber grating wavelength modulator is used for obtaining the weight change of the cable according to a received wavelength signal. Due to the adoption of the ice coating detection device, the ice coating condition of the cable can be effectively detected.

Methods and apparatus for lenses and glasses are provided in which a lens (10) is formed with a thickness of less than 5 millimeters without grinding, and has two viewing segments (12 and 14). The first viewing segment (12) has a magnification power to correct for effects of presbyopia for near range viewing, and the second viewing segment (14) has a magnification power to correct for effects of presbyopia for intermediate range viewing.

The invention is a mobile natural gama scaling-while-drilling (SWD) well, comprising casing, fillings and hole, where the casing is anticorrosive and provided with hook outside, which can make the well moved at will, the axis in the casing is provided with glass steel hole, and the poured potassium-containing uranothorite fillings is in the annular space formed by the casing and the hole. And the measurement values of the SWD well can directly trace to the source of natural gama API industrial standard and the natural gama logging-while-drilling (LWD) device can scale in the SWD well together with the drill collar, correcting the effect of the drill collar on the natural gama counting rate and meeting the scale requirements of the natural gama LWD device.

The invention discloses a detection circuit with a smoke concentration infrared detection function and a detection method of the detection circuit. The detection circuit comprises a processing module,an infrared receiving tube and an infrared transmitting tube, wherein the infrared receiving tube is connected with the processing module and is used for collecting current ambient light and currentsmoke to acquire voltage signals corresponding to the current ambient light and the current smoke and sending the voltage signals corresponding to the current ambient light and the current smoke to the processing module; the processing module is connected with the infrared transmitting tube and is used for controlling turn-on and turn-off of the infrared transmitting tube; and the processing module is used for performing compensation according to the voltage signals of the infrared receiving tube to obtain the smoke concentration corresponding to the current smoke. In this way, the voltage signals corresponding to the ambient light and infrared light used for smoke detection are detected respectively by controlling the turn-on and turn-off of the infrared transmitting tube, and the influence of the ambient light on a test result can be effectively corrected. Besides, according to negative temperature characteristics of PN junctions of diodes, a temperature compensation circuit is adopted to perform temperature correction, and therefore the influence of temperature drift characteristics of the infrared receiving tube on the test result can be effectively solved.

The invention discloses a gold label card detection method and reader based on a cloud computation network platform. The gold label card detection method includes the following steps: image information of a gold label card is acquired; the information is uploaded to a remote server; the remote server analyzes a T line and a C line of the gold label card and calculates a detection result; and the detection result is saved and transmitted back to the card reader and the card reader outputs the detection result. The gold card reader includes a micro computer system arranged on the card reader, and a server and analysis software, which are arranged outside the card reader. A CCD camera and a touch screen are arranged on the card reader. The gold label card reader only acquires images, but does not analyze or detect the acquired images, and then uploads original image data, and the remote server carries out analysis, detection and discriminative reading so that a calculation quantity of an embedded-type system of a handheld terminal is reduced, an image analysis and computation method is optimized and human intervention can also be prevented and thus the accuracy and authenticity of the detection result are ensured. The gold label card detection method and reader are also capable of uploading other identification data such as geographic information and the like.

A CT machine able to automatic subduce the false edge image features that the calibrating curve of original model is analyzed and extended according to the performance of the machine to calibrate the excessive part of curve, and the calibrated curve is input to its computer to subduce the false edge image. Said analyzing and extending method includes such steps as maintaining the central part of calibrating curve for original model, analyzing and extending the excessive part of curve, and smoothing the edge interface by interpolation method.

The invention relates to a correcting device for scoliosis. The correcting device comprises a correcting support, the correcting support comprises a correcting vertical support body, a correcting transverse support body which extends in the left-and-right direction is arranged on the correcting vertical support body, spine correcting pieces are movably assembled through guiding in the left-and-right direction of the correcting transverse support body, the correcting device for scoliosis further comprises elastic parts used for exerting elastic acting force on the spine correcting pieces in thedirection of the correcting vertical support body, the elastic parts are provided with marks, scales corresponding to the marks are arranged in the left-and-right direction on the correcting transverse support body, and the ends, close to the correcting vertical support body, of the elastic parts are connected with the correcting transverse support body or the correcting vertical support body through adjusting mechanisms capable of moving in the left-and-right direction. The correcting device solves the problem that in the prior art, judgment is inaccurate if people completely depend on timeto judge whether or not correcting force is suitable.

The invention discloses a side-slither radiometric calibration processing method based on histogram equalization. The method comprises the steps of (1) selecting original calibration data, conducting translation processing on the original calibration data, and extracting effective calibration data; (2) calculating a standard accumulative histogram of all the detection units according to the effective calibration data extracted from the step (1) to further obtain an accumulative histogram of each detection unit; (3) establishing a relative radiometric calibration lookup table according to the accumulative histograms obtained from the last step and a laboratory relative radiometric calibration model; (4) conducting relative radiometric calibration on an original image by means of the lookup table. According to the method, the applicability of side-slither calibration is improved, and side-slither relative radiometric calibration based on histogram equalization is achieved.

The invention discloses a self-calibration method of a vector network analyzer based on a ten-error model. The method specifically comprises the following steps: 101) an initialization step, 102) a calibration standard component parameter setting step, 103) a calibration standard component parameter acquisition step, 104) a correction step, 105) a transformation processing step, 106) a step of calculating to obtain corresponding parameters, and 107) a test step. The invention provides the self-calibration method of a vector network analyzer based on a ten-error model, which only needs to calibrate the delay tau of a standard part Thru and the direct current resistance RM of an insertion loss IL and a load standard part Match (Load), and other calibration standard part parameters are automatically calculated in the calibration process.

The invention discloses a PCB correction method which comprises the steps as follows: a, stacking a plurality of pieces of PCBs into PCB groups, and stacking the PCB groups into a pile, wherein a heat transmission component is placed between every two PCB groups; b, applying pressure to the top of the whole pile of stacked PCB groups and heating for roasting; and c, performing cold pressing on the pile of PCBs. The invention further discloses a PCB correction device which comprises a roaster, and a carrier used for stacking and placing PCBs to be corrected; and the PCB correction device is characterized in that the carrier can be arranged in the roaster in an in-out manner, and is provided with a pressurizing component capable of applying pressure to the whole pile of PCBs simultaneously, and heat transmission components. According to the invention, pressure is applied to the top of the whole pile after the plurality of groups of PCBs to be corrected are stacked into the whole pile, so that the pile of PCBs can be corrected simultaneously, and production efficiency is improved; and compared with the traditional method, the PCB correction method and device for correcting the PCBs, disclosed by the invention, have the advantage that, double-area products can be processed every time.

The invention provides a hospital orthopedic spine correction assisting device and relates to the technical field of medical instruments. The device comprises a seat, an auxiliary correction assemblyand an adjustment fixing assembly; a motor is fixedly connected with a mounting frame, a movable cavity is formed in one side of a backing plate, one end of a screw rod is mounted at an output end ofthe motor, and a sliding table is screwed on the screw rod and located in the movable cavity; one end of a connecting rod is fixedly connected with one side of the sliding table, and the other end ofthe connecting rod extends to the outer side of the backing plate via a through hole; a movable frame is fixedly connected with one end of the connecting rod, and a first spring is fixedly connected between a spine correction block and the movable frame. Through the designed auxiliary correction assembly, the movement of the sliding table is utilized to drive pulleys and the spine correction blockto move up and down, so that correction and massage are effectively carried out on the spine of a patient for rehabilitation treatment. At the same time, by adjusting the height of support rods, theuse requirements of patients of different body shapes are met, and the correction effect of the entire device is ensured.