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103results about How to "Eliminate individual differences" patented technology

Rehabilitation training evaluation method and system based on interaction between exercise information and myoelectricity

ActiveCN108814597APromotes maximum activationAccelerated neural remodelingDiagnostic recording/measuringSensorsEngineeringColor changes
The invention discloses a rehabilitation training evaluation method and system based on the interaction between exercise information and myoelectricity. Exoskeletons are arranged on front half parts of rehabilitation information gloves, bending sensors and pressure sensors are arranged on the portions, corresponding to joints of the upper limbs and hands, of the rehabilitation information gloves,multiple myoelectric electrodes are arranged on muscle parts corresponding to joint movement, and the bending sensors, the pressure sensors and the myoelectric electrodes are separately connected witha computer; the computer uses the position, the velocity, the acceleration and the pressure as input data for neural network training, myoelectric signal features are used as guide signals for performing neural network training, and the computer displays visual feedback refined to the color change of each exercise muscle through a display unit so that healthy people or patients can conduct activetraining in line with continuous movement intention according to the movement and multiple muscle color changes. Real-time synchronization of the intention and complex and fine movement is achieved in a real sense, and evaluation of the targeted quantification of the single muscle of the patients with different movement disorder conditions is achieved.
Owner:深圳睿瀚医疗科技有限公司

Difference depth feature-based facial expression recognition method and system

The invention provides a difference depth feature-based facial expression recognition method and system and belongs to the pattern recognition technical field. The method includes the following stepsthat: face depth features are extracted from a sample face region frame sequence, and neutral expression frames and peak expression frames are extracted from the sample face region frame sequence according to the face depth features; and the face depth features of the neutral expression frames are subtracted from the face depth features of the peak expression frames of the sample image frame sequence, so that difference depth features can be obtained; and the difference depth features of the sample face region frame sequence and corresponding facial expressions are adopted as training input, so that a facial expression classifier can be obtained through training, and the facial expression classifier is adopted to achieve facial expression classification. According to the difference depth feature-based facial expression recognition method and system of the invention, the concept of difference is introduced into the depth features, and the difference depth features are used to representfacial expressions, and therefore, facial expression information can be preserved as much as possible, and at the same time, individual differences and environmental noises can be eliminated; and thedistinguishing capability of used features for the facial expressions is strong, so that the robustness of facial expression recognition can be improved.
Owner:HUAZHONG NORMAL UNIV

Wearable equipment capable of automatically adjusting body temperature and method for adjusting body temperature

The invention discloses wearable equipment capable of automatically adjusting body temperature, and a method for adjusting body temperature. The equipment comprises a wearable component, wherein the wearable component comprises at least one separated component; the at least one separated component comprises a flexible wearable outer shell adapted to the shape of a corresponding part of a human body, and at least one stimulating electrode, a power supply management module, a control module and a wireless module which are arranged on the flexible wearable outer shell; the flexible wearable outershell is used for being attached to the surface of the human body; the stimulating electrode is used for being in contact with the skin of the human body; an upper computer terminal controls to generate and transmit a stimulating instruction to the wireless module in wireless manner; and the control module controls the power supply management module to output a stimulating electric signal used for stimulating the corresponding part of the human body to the stimulating electrode according to the stimulating instruction, and the adjustment of the body temperature of a wearer is realized throughstimulating the increase/decrease in heat generated by the human body by means of the stimulating electrode. The wearable equipment and the method solve the problem that the body temperature of a human body can only be quickly adjusted according to external environmental factors under the traditional cold or hot weather conditions.
Owner:SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV

Signal processing system for four-quadrant photoelectric detector

The invention provides a signal processing system for a four-quadrant photoelectric detector, relates to the field of signal detecting and processing of photoelectric detectors, and aims at solving the problems of distortion of pulse signal acquiring, reduction of system precision and influence from environmental temperature of the exiting processing system for the four-quadrant photoelectric detector. The system is that a signal outputted by the four-quadrant photoelectric detector flows through an amplitude limiting protecting circuit and then is outputted to a high-pass filter; the filtered signal is converted into a differential signal through a single-end converting differential driver; the differential signal is adjusted by a variable gain adjusting module to be zoomed to reach a proper amplitude value and then inputted into a high speed differential analog-to-digital converter; the generated digital signal is inputted to a signal processing unit; the signal processing unit sends a control signal to a detector gain control module according to the intensity of the received digital signal; the detector gain control module controls the output gain of the four-quadrant photoelectric detector; the signal processing unit processes the signal to obtain the spot center position and then sends to a host control system. With the adoption of the system, the spot center position calculation precision can be improved.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

Brain nuclear magnetic resonance image-based multi-dimensional feature classification algorithm

The invention discloses a brain MR image-based multi-dimensional feature classification algorithm. The algorithm comprises the steps of performing regional division on brain MR images and extracting a plurality of ROI characteristics; selecting a mark characteristic, establishing a correlation among the ROI characteristics about the mark characteristic, and forming related characteristics; extracting the ROI characteristics and the related characteristics from the brain MR images to form an ROI characteristic set and a related characteristic set; selecting an optimal ROI characteristic subset and an optimal related characteristic subset from the ROI characteristic set and the related characteristic set through a mixed characteristic algorithm; and setting a weight factor of a function proportion of the ROI characteristics in a classifier, and integrating the optimal ROI characteristic subset and the optimal related characteristic subset through the weight factor and a multi-kernel SVM model to form a multi-kernel classifier. According to the algorithm, high-dimensional characteristics are obtained; local change and function connection change caused by related diseases can be analyzed at the same time; the classification accuracy is high; and the algorithm can assist in diagnosis of different diseases.
Owner:SUZHOU INST OF BIOMEDICAL ENG & TECH CHINESE ACADEMY OF SCI

Air conditioner outdoor heat exchanger self-cleaning control method, air conditioner and computer readable storage medium

The invention provides an air conditioner outdoor heat exchanger self-cleaning control method, an air conditioner and a computer readable storage medium. The method comprises the following steps thatafter a heating mode works for a first preset time, an initial defrosting mode is entered, after the work of the initial defrosting mode is finished, whether the number of times that the temperature of an outdoor unit coil is not higher than a preset filth blockage temperature threshold value is larger than the preset number of times or not is judged, if yes, the situation that filth blockage exists in the heat exchanger is determined, and an preset self-cleaning operation is executed. The invention further provides the air conditioner applying the method and a computer readable storage mediumfor achieving the method. According to the air conditioner outdoor heat exchanger self-cleaning control method, the air conditioner and the computer readable storage medium, the filth blockage of theoutdoor heat exchanger of the air conditioner can be accurately judged, calculation of the self-cleaning execution time and duration of the outdoor heat exchanger of the air conditioner is more accurate, the better self-cleaning effect of the outdoor heat exchanger is achieved, and the heat exchange effect of the outdoor heat exchanger is improved.
Owner:GREE ELECTRIC APPLIANCES INC

Method for generating dynamic data of dynamic seat based on video processing

The invention discloses a method for generating dynamic data of a dynamic seat based on video processing. The method comprises the following steps of identifying an image of a film video, and selecting a plurality of feature points of any feature objects on the image as required; tracking the position change of all the feature points through a video processing algorithm by utilizing a computer; calculating and obtaining a movement parameter and a movement trail of a virtual camera through video processing algorithm according to the position change of the feature points; calculating and obtaining the practical movement trails and movement parameters of the feature objects through the video processing algorithm according to the movement parameter and the move trail of the virtual camera; generating the dynamic data of the dynamic seat according to the practical movement trails and the movement parameters of the feature objects. By means of the method for generating dynamic data of the dynamic seat based on video processing, automatic generation of the dynamic data is almost achieved, generation efficiency of the dynamic data is greatly improved, accuracy of the dynamic data obtained through the method is obviously improved, and the method can eliminate the hysteretic property of the dynamic data.
Owner:CHINA FILM EQUIP

Washing machine and wet cloth weighing method and device thereof

The invention discloses a washing machine and a wet cloth weighing method and device thereof. The method comprises the following steps: after the washing machine enters a dewatering program, controlling the rotating speed of a dewatering motor of the washing machine to be increased from zero speed; in a stage of increasing the rotating speed of the dewatering motor, acquiring first total power required for the dewatering motor which drives an inner barrel of the washing machine to rotate by a first number of turns in a process of increasing a first rotating speed to a second rotating speed; in a second stage of stable running at the second rotating speed of the dewatering motor of the washing machine, acquiring a second total power required for the dewatering motor which drives the inner barrel of the washing machine to rotate by a second number of turns in a process of stable running at the second rotating speed, and acquiring an average torque ripple value of the dewatering motor which drives the inner barrel to rotate in the process of stable running at the second rotating speed; and calculating weight of clothes in the inner barrel according to the first total power, the second total power and the average torque ripple value. According to the method of the invention, wet cloth weight of the clothes can be conveniently and accurately acquired in a dewatering process.
Owner:WUXI LITTLE SWAN ELECTRIC CO LTD

Shadow shielding identification method and device for photovoltaic string

The invention provides a shadow shielding identification method and device for a photovoltaic string. The method comprises the following steps: obtaining the direct current power of each photovoltaicstring corresponding to a target inverter in an effective acquisition period at each acquisition moment; performing data standardization processing on the direct current power of each photovoltaic string at each acquisition moment to obtain the power generation efficiency of each photovoltaic string at each acquisition moment; respectively calculating power generation efficiency discrete rates ofall the photovoltaic strings at each acquisition moment; at each acquisition moment, clustering the power generation efficiency of all the photovoltaic strings to obtain two clustering clusters, and calculating a relative error between central values of the two clustering clusters; and at each acquisition moment, when the power generation efficiency dispersion rate is greater than a dispersion rate threshold value and the relative error is greater than an error threshold value, judging that the photovoltaic string in the clustering cluster with the smaller central value has shadow shielding atthe acquisition moment. According to the invention, accurate identification of shadow shielding of the photovoltaic string is realized on the basis of not needing meteorological data.
Owner:SUNGROW POWER SUPPLY CO LTD

Calorimeter performance degradation evaluation method, storage medium and equipment

ActiveCN112197890AAddressing the effects of \"dirty data\"Solve the problem of baseline shiftCharacter and pattern recognitionCalorimeterMonitoring dataMahalanobis distance
The invention discloses a calorimeter performance degradation evaluation method, a storage medium and equipment; and the method comprises the steps: carrying out the abnormal point removal and trend term removal preprocessing of the monitoring data of a calorimeter, constructing a calorimeter performance degradation feature set, and selecting an optimal feature through employing multiple evaluation indexes; obtaining a normal state reference by using an improved DBSCAN algorithm, and constructing a performance degradation index fused with Mahalanobis distance and cosine similarity; secondly, providing an adaptive degradation stage division method based on the pauta criterion, completing threshold determination of four degradation stages in combination with a calorimeter performance degradation curve, and determining the stage by calculating degradation characteristic state points of the calorimeter to be detected and performance degradation index values of all the references; and providing an evaluation standard based on judgment accuracy to realize accurate evaluation of the performance degradation of the heat meter. The method can improve the operation efficiency and result accuracy of a calorimeter degradation evaluation algorithm to a certain extent, and achieve the performance degradation stage mode recognition of the calorimeter.
Owner:XI AN JIAOTONG UNIV

Animal autonomous respiration device used for hyperpolarization gas MRI

ActiveCN104224401AThe inflow continues to be stableAchieve MRIDiagnostic recording/measuringSensorsAutonomous breathingRespirator
The invention discloses an animal autonomous respiration device used for hyperpolarization gas MRI. A respiration connector is respectively connected with an existing hyperpolarization gas transmission module and an MRI compatible respirator. The respiration connector is directly connected with a respiration cavity through a respiration pipeline, a pressurization cavity is directly connected with the respiration cavity through a perforated diaphragm, the pressurization cavity is connected with the outer diameter of the respiration pipeline, a normal pressure baffle is provided with vent holes, the normal pressure baffle is connected with the tail end of the respiration cavity, an anesthetic gas recovery box is connected with the outer diameter of the pressurization cavity and the normal pressure baffle, an anesthetic gas inlet pipeline is sequentially connected with a flow meter and a pressure meter, and the pressure meter is connected with the pressurization cavity through a pipeline. A branch is formed between the flow meter and the pressure meter through a three-way valve, and the branch is directly connected with the MRI compatible respirator. The animal autonomous respiration device used for hyperpolarization gas MRI is simple in structure, is convenient to use, achieves hyperpolarization gas tests, provides an autonomous respiration mode, avoids damage to the lungs of animals caused by a passive mechanical respiration mode, and guarantees authenticity and reliability of measuring results.
Owner:WUHAN INST OF PHYSICS & MATHEMATICS CHINESE ACADEMY OF SCI
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