306results about How to "Real-time correction" patented technology

A force sensor system for use in monitoring weight bearing on a location. The force sensor system comprises at least one a foot force sensor, a palm force sensor, and a knee force sensor. The foot force sensor comprises a flexible insole containing a plurality of inflatable pockets that are inflated with air or liquid. The palm force sensor and knee force sensor each comprise a wrap to be worn around the palm and knee, respectively. Each wrap comprises a pocket. Each pocket is connected to a tube that, in turn, connects with a pressure sensor and a connector coupling that is remote from the pocket. Each coupling contains a valve. The valve opens to allow inflation and deflation of each inflatable pocket. The pressure sensors measure the air or liquid pressure within each of the inflatable pockets, and convert the corresponding pressure signal into a suitable output signal medium, usually electrical signals. The output signal from the sensors provides accurate real time input data to a weight bearing biofeedback system or to control a stimulator for activation of an electronic orthosis to normalize dynamic gait patterns.

An apparatus for measuring optical aberrations of the human eye wherein the person positions his or her eye on an optical axis of the apparatus and looks at an illuminated target on the optical axis that is visible to the eye for allowing the eye to focus on the target and establish a position of the eye. A collimating lens on the optical axis is movable along the optical axis for adjusting the apparent optical distance between the eye and the target. A light source directs a predetermined light beam along the optical axis into the eye and onto the retina of the eye as a spot of light. A lens reimages the light scattered from the light spot on the eye retina into a wavefront curvature sensor that forms two oppositely defocused images on an image detector, and a computer processes and analyzes the two defocused images for measuring the optical aberrations of the eye.

The invention relates to an assembly digital field based on a flexible array pressure sensor and a method for training gait. Parameters of an athlete including action time sequence, action frequency, position calibration, stress center point, stress time and flight time can be acquired through acquiring information including pressure of foot soles of the athlete contacted with the flexible array pressure sensor unit in the assembly digital field. The digital field and the method have the advantages that the requirement of real time can be met in longer distance; the module of the assembly digital field can be disassembled and assembled arbitrarily, and can extract gait characteristics on multiple sports training events; and the athlete can correctly recognize the training effect of the athlete self through a sports effect evaluation system and an expert system, and adjust the training plan in real time. The digital field and the method can also be applied in the field of mode recognition.

The invention discloses a battery charge state detecting method. The method comprises the steps that the initial SOC of a battery is determined; the self-discharge effect of the battery is considered; a table look-up method is used to accurately estimate the SOC of the battery; an ampere-hour integral method is used to acquire the SOC estimation value of the battery of a next moment; a battery Thevenin model is combined, and an extended Kalman filter algorithm is used to correct the SOC of the battery; and finally, low power, over-current, over-temperature and the like of the battery are judged to carry out early warning and protection. According to the method provided by the invention, the influence of self-discharge of the battery on the battery capacity and the influence of temperature, the number of times of cycle charge and discharge and charge and discharge current on the rated capacity of battery are comprehensively considered, wherein self-discharge of the battery is caused by first time of running and downtime of the battery; error correcting is carried out on the SOC of the battery; and the accuracy is improved.

The invention provides an ultra-high-definition panoramic video real-time generation and multi-channel synchronous play system, and relates to the technical field of panoramic camera shooting. According to the system, on the basis of camera array imaging and collecting and by means of GPU high-speed parallel processing characteristics, the high-definition image real-time splicing, correcting, dimming, code compressing and transmission functions are achieved, a multi-channel panoramic multi-camera and an application system of the multi-channel panoramic multi-camera are designed, appropriate reprojection models are selected in a self-adaption mode for different shooting modes such as the cylindrical surface shooting mode and the spherical surface shooting mode, the problems that existing panoramic camera shooting devices in China are generally not high in stability, low in resolution, poor in expansibility, short of instantaneity and the like are successfully solved, the highest product resolution can reach 4320 p to 12960 p, and the frame rate is 30 fps.

The invention discloses a one-dimensional rotation and two-dimensional inclination working platform, which comprises a pedestal, a bottom layer board, a middle layer board, an upper layer board, an adjusting mechanism and a driving part. The bottom layer board and the upper layer board achieve the inclination of the working platform in a mutually orthogonal direction respectively, while the middle layer board achieves the rotation of the working platform in a larger range in a plane vertical to the two orthogonal directions. The pedestal is connected with the bottom layer board through a rotating pair, a wedged slide block and a spring, a linear guide way is fixed on a bottom plate, and the wedged slide block supports the bottom layer board; the bottom layer board is connected with the middle layer board through a cambered guide way and a central rotating shaft; and the middle layer board is also connected with the upper layer board through the rotating pair, the wedged slide block and the spring, the linear guide way is fixed on the middle layer board, and the wedged slide block supports the upper layer board. The adjusting mechanism comprises a coarse adjusting structure and a fine adjusting structure. The invention can achieve the work demands of the one-dimensional rotation and the two-dimensional inclination for the working platform, and can achieve the angle positioning of a sub-angle second-time level in a larger space adjusting range.

A method and equipment for correcting the amplitude and phase difference of array channels in a time-shared duplex intelligent antenna system is disclosed. Said method includes such steps as setting up a switch array in the front of transceiver of the first channel for switching between transmission and receiving and between up and down correcting links, performing up correction through outputting a known sequence to the transmitter of the first channel, connecting up correcting link, detecting the responses of all receiving channels and sampling while storing, or performing down correction through sequentially transmitting a known sequence to transmitters of N down channels, connecting down correcting link, detecting the known characteristic signal of the response from currently corrected channel, and sampling while storing, and calculating the correcting right of all up and down channels for weighting the wave beams.

The invention discloses a real-time sensorless brushless motor phase change phase correction method based on the voltage of neutral points. By the adoption of the real-time sensorless brushless motor phase change phase correction method, the phase change position errors of a permanent-magnet brushless motor without a position sensor can be effectively reduced, and the optimum-position phase change is achieved. According to the real-time sensorless brushless motor phase change phase correction method, the voltage differences of neutral points within the 30-degree range on the front side and the 30-degree range on the rear side of a phase change point are collected and calculated so that the current phase error of the phase change can be determined, the voltage differences are used as phase change error feedback quantity, and real-time correction of the permanent-magnet brushless motor is achieved. Experiment results show that no matter whether the load is light or heavy, the phase change phase correction of the permanent-magnet brushless motor without the position sensor can be achieved.

The present invention discloses a method for determining location and movement of a moving object. One embodiment of the method tracks the movement of a target during medical imaging scanning and transmits the position shift to the medical imaging scanning device in real time. The method includes the steps of projecting structured light on the target, receiving the reflection of structured light, converting the received structured light into spatial positions, and transmitting the positional shift to the medical imaging scanning device. The method further includes the step of adjusting the medical imaging scanning device in response to the positional change to increase accuracy.

The present invention discloses an apparatus and method to track the movement of a target. One embodiment tracks the movement of the patient during medical imaging scanning using optical technology. Optical systems record the position and movement of the target and provide inputs to a processor. The processor is capable of performing mathematical analysis of the movement of the target to determine the positional shift of the patient. Weighted averages, phase correlation, Fourier-Mellin algorithms, and cross-correlation of data related to X-Y translation are used to calculate movement of the target subject. Feedback related to the movement is provided to the medical imaging scanning machine which allows for adjustments in focusing coils for real time tracking of the patient's movements during the procedure. As a result, the medical image scanning procedure becomes more accurate as it is adjusted for the patient's movements.

The invention provides a model-free wavefront distortion correcting system based on a spatial light modulator. The system consist of a polarizing sheet 1, a telescopic system 2, a beam splitter prism 3, a shrinkage device 4, a CCD camera 5, a computer system 6, the spatial light modulator 7, a wavefront controller 8 and a monitoring camera 9. The common CCD camera is adopted to form images; a Strehl ratio of beams is analyzed according to the model-free iteration theory to obtain control signals of optimization parameters required by a wavefront corrector; the performance indexes of the system such as imaging definition, receiving light energy and the like are directly used as objective functions of an optimization algorithm to optimize and acquire the correction effect close to a diffraction limit; and the optimization parameters are calculated in parallel by a computer with a graph processor, the acquired multi-channel control signals are transmitted to the wavefront controller, and then the wavefront controller drives the spatial light modulator to achieve real-time correction of wavefront distortion phase so as to effectively solve the problem of wavefront distortion in atmospheric laser communication.

Provided is a method for analyzing a network attack situation. The method categorizes network intrusion detection alerts into network attack situations, counts the frequency of same-featured intrusion alert occurrence for each network attack situation using a counting algorithm based on time slots, and analyzes the network attack situation based on the frequency of same-featured intrusion detection alert occurrence, the rate of same-featured intrusion detection alert occurrence, or an AND/OR combination of them. The network attack situation can be correctly detected in real time without relatively being influenced by the size of the network or amount of the occurrence of the intrusion detection alerts.

The invention belongs to the field of high temperature object measurement, in particular to a method of compensating image quality during high-temperature object measurement. The compensating method comprises the steps of illuminating the surface of a to-be-detected high temperature object by using an adjustable light intensity laser, and realizing effectively filtrating the radiant strong light of a plurality of high temperature objects after laser reflected by the surfaces of the high-temperature objects and radiant strong light of the high temperature objects are filtrated by an optical filter; making the camera image by the radiant strong light of the rest of parts of high temperature objects and the high temperature objects. The output light intensity output by a laser device can be adjusted in real time so that the laser device is matched with the changing tendency of the light intensity of the radiant light according to the light intensity changing tendency if radiant light in a filter piece pass-band at different temperatures, and the clear images of characteristic light bars of the high temperature objects can be realized in a large temperature gradient; furthermore, the compensation parameters of an assistant laser device can be adjusted in real time by a built compensation model, and the real-time correction of the image quality of the high temperature objects can be realized, so as to realize clearly acquiring the high temperature images at different temperatures.

The invention provides a data UE visual design system, which comprises a data management module used for obtaining source data through a local file uploading mode or a far-end database extraction mode, selecting a database needing to be configured with data connection, generating new data connection information, and then storing the collected source data into the database; a visual tool design module used for designing a visual interactive chart editing tool to serve as a display board for displaying data; a billboard editing module used for importing a billboard installation package from theoutside and installing a corresponding billboard; and a visual presentation module used for receiving an operation instruction of a user on a visual tool, dragging the corresponding interactive chartediting tool according to the operation instruction, and carrying out real-time updating presentation on the created data in a designed billboard style. According to the method, the usability is ensured, meanwhile, powerful data visual analysis, visual exploration and display functions are provided, and all requirements of organizations for data processing and operation analysis are fully met.

The invention discloses a downlink active noise reduction device and method and a mobile terminal. The device includes: a first sound wave collector used for collecting an environmental noise signal, obtaining a reference signal, and outputting the reference signal to a self-adaptive controller; a self-adaptive controller used for calculating a secondary signal used for implementing sound wave counteraction based on the received reference signal and forwardly or reversely adjusting the amplitude and phase of the secondary signal based on a received error signal; a secondary sound field transmitter used for sending out the secondary signal adjusted by the self-adaptive controller in a sound wave form; and a second sound wave collector used for collecting the environment noise signal and the secondary signal, superposing the two signals, obtaining an error signal and outputting the error signal to the self-adaptive controller. Through the downlink active noise reduction device, active noise reduction is applied to a mobile phone, thereby improving a local call receiving effect, and the downlink active noise reduction device has good market prospects.

The invention is suitable for the electric power field and provides a three-phase electric quantity calculation method and an apparatus thereof. The method comprises the following steps: detecting angles and amplitudes of a three-phase voltage and a three-phase current; forming a vector diagram according to the angles and the amplitudes of the three-phase voltage and the three-phase current and determining wiring of a three-phase electric energy meter according to the vector diagram; if false wiring is determined, calculating electric energy of the three-phase electric energy meter after the wiring of the three-phase electric energy meter is corrected to be the right wiring according to the wiring. By using the technical scheme provided in the invention, on-site measurement is not needed. According to the vector diagram provided by a metering chip, a grid company can discover the false wiring in real time and correct in real time. An intelligent degree is high.

In a radiation detector (10) for a time of flight positron emission tomography (PET) scanner (2), a radiation sensitive member (20) generates a signal (22) indicative of a radiation detection event. A time to digital converter (34) includes digital delay elements (40) operatively interconnected as a ring oscillator (36, 36') and readout circuitry (50, 52, 60, 82, 84, 86, 88) configured to generate a timestamp for the radiation detection event based at least on a state of the ring oscillator when the signal is generated. Delay trim elements (46) operatively connected to the digital delay elements set a substantially common delay for the digital delay elements. Additionally or alternatively, the digital delay elements (40) include readout buffers (48') having transition times substantially longer than a delay of the digital delay elements, analog to digital converters (82, 84) digitize values of the delay elements, and decoding circuitry (86, 88) computes the state of the ring oscillator (36') based on the digitized values.

The correcting method for dynamic measured position of photoelectronic width measurer is suitable for real-time correction of measurement error caused by the axial runout and inclination of the measured object during linear measurement of photoelectronic width measurer. The method includes extracting axial position information from the width information obtained with the detector so as to make the width measurer possess capacity of recognizing the object position in the optical axis direction and to constitute one integral width measuring and ranging measurement system; calibrating the video camera through experiment; and establishing the target axial runout and inclination correcting relationship with the correcting model, so that the photoelectronic width measurer can correct measurement error timely based on the position information during dynamic measurement.

The invention discloses a photovoltaic power station super-short-term power prediction device which comprises a meteorological data receiving device used for receiving predicted meteorological data of a photovoltaic power station in the future, a power station monitoring device used for measuring the real-time meteorological data and real-time power of the photovoltaic power station, a historical power generation server used for recording and collecting historical generated power and corresponding real-time meteorological data of the photovoltaic power station, a measured meteorological change system used for analyzing change information of the real-time meteorological data, a power prediction system used for processing the data information of the meteorological data receiving device and the historical power generation server to get a predicted value of power, and a power prediction correction system used for correcting the predicted value of power of the photovoltaic power station. According to the invention, real-time change information of meteorological elements is introduced into the power prediction correction system, and the predicted power of the photovoltaic power station is corrected according to the laws of real-time meteorological change on the prediction day. Thus, the accuracy of photovoltaic power station super-short-term power prediction is improved.

The invention discloses a successive approximation type analog-to-digital converter and an error code detection based digital correction method thereof. The correction method comprises steps as follows: 1) an initial value of a correction capacitor is set; 2) a digital correction logic circuit randomly acquires digital output codes of a converter; 3) the output codes are divided into two groups, namely, a group A and a group B, and the output codes are counted by 8-bit counters A and B; 4) if the overflow speed of the 8-bit counter B is higher than that of the 8-bit counter A, the correction capacitor is increased by 0.5 C; if the overflow speed of the 8-bit counter A is higher than that of the 8-bit counter B, the correction capacitor is decreased by 0.5 C; if the overflow speed of the 8-bit counter B is equal to that of the 8-bit counter A, the value of the correction capacitor is unchanged; 5) after Step 4) is finished, the digital correction logic circuit clears the 8-bit counters A and B, and Steps 2)-4) are repeated. According to the correction method, the specific correction process and the conversion process of the successive approximation type analog-to-digital converter are conducted synchronously, no additional correction period or correction time is required, real-time response can be made to PVT change, and the method has the advantage of capability of realizing real-time correction.