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67results about How to "Perceived effect is good" patented technology
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Cooperative spectrum sensing method based on characteristic values
ActiveCN103795479APerceived effect is goodSpatial transmit diversityTransmission monitoringSmall sampleFrequency spectrum
The invention discloses a cooperative spectrum sensing method based on characteristic values. The new cooperative spectrum sensing method based on the characteristic values - SMEE method is provided under an MIMO multi-channel environment. According to the method, a spectrum sensing threshold is obtained through Monte Carlo simulation, and the threshold is compared with the ratio between the maximum characteristic value and the minimum characteristic value lambda max / lambda min of the covariance matrix of received signals to judge whether signals of an authorization main user exist. The method does not need the priori knowledge of channels and signals, is not affected by the uncertainty of noise, effectively improves the sensing performance of spectrum sensing under the conditions of a low signal-to-noise ratio and small samples, and can carry out normal sensing under any given dimension.
Owner:NANJING UNIV OF POSTS & TELECOMM
Method and acoustic system for generating stereo signals for each of separate sound sources
InactiveUS20060120535A1Perceived effect is goodMicrophones signal combinationTwo-channel systemsSound sourcesEngineering
In a method and an acoustic system that generate a stereo signal for each of multiple separate sources, a blind source separation of at least two microphone signals is conducted to acquire BSS filters. Each of the microphone signals is filtered with its own filter transfer function that is the quotient of a power density spectral portion of the respective sound source and the overall power density spectrum of the respective microphone signal, such that two stereo signals are obtained for each microphone signal. An approximation of the signals to be separated, for example for each of two hearing devices, is thereby possible.
Owner:SIVANTOS PTE LTD
Frequency spectrum sensing method under Alpha stable distributed noises
ActiveCN105024771AEnable Spectrum SensingPerceived effect is goodModulated-carrier systemsTransmission monitoringSignal-to-noise ratio (imaging)Greek letter alpha
The invention discloses a frequency spectrum sensing method under Alpha stable distributed noises. The method comprises the following steps of: constructing a maximum joint entropy frequency spectrum sensing model under an Alpha stable distributed noise environment; based on a conjugate convex function theory, obtaining an augmented cost function based on maximum joint entropy; adopting a half-quadratic optimization technology to optimize the cost function, and obtaining an optimal weight vector by an iteration mode; and through judgment criterions, carrying out judgment on the value of the cost function, and realizing the frequency spectrum sensing under the Alpha stable distributed noise environment. According to the invention, the spectrum sensing can be carried out under the Alpha stable distributed noise environment, and good sensing performance is realized when a generalized signal to noise ratio is relatively small.
Owner:XIDIAN UNIV
Broadband compressed spectrum sensing method based on sub-band matching selection
ActiveCN105610525AReduce the number of iterationsReduce spectrum reconstruction timeTransmission monitoringFrequency spectrumAnalog signal
The invention discloses a broadband compressed spectrum sensing method based on sub-band matching selection. In a spectrum sensing stage, a secondary user carries out compressed sampling to received analog signals through an analog information converter, thus obtaining few compressed sampling data; frequency domain sparsity signals corresponding to the signals obtained by carrying out Nyquist sampling to the analog signals are reconstructed through an iteration mode; then the secondary user judges the occupation state of each sub-band on the reconstructed frequency domain sparsity signals by an energy detection method; the method has the advantages that the single frequency point matching selection is changed into the sub-band matching selection; the sub-bands of a primary user can be determined; the iterations of the algorithms in the spectrum reconstruction can be greatly reduced; the spectrum reconstruction time is shortened; the residual errors are updated by a regularized least square method; therefore, the spectrum reconstruction accuracy and robustness can be further improved; and the broadband spectrum sensing performance is improved.
Owner:NINGBO UNIV
Broadband collaboration spectrum sensing method under large/small-scale fading channels
The invention discloses a broadband collaboration spectrum sensing method under large / small-scale fading channels. The broadband collaboration spectrum sensing method includes steps that constructing a broadband collaboration spectrum sensing system model under large / small-scale fading channels; dividing the spectrum into L narrow-band spectra, and dividing a secondary user into L clusters; under the small-scale fading channel, using the clusters to sense different narrow-band spectra; using 'or rule' to fuse and judge the information of each cognitive user at the cluster head of each cluster to finish the spectrum sensing in the cluster; enabling each cluster head to send the sensing information in the cluster to a fusion center through the large-scale fading channel, and enabling the fusion center to gather the sensing information of each narrow-band spectrum to realize the sensing for the broadband spectrum. The broadband collaboration spectrum sensing method under large / small-scale fading channels is capable of sensing the broadband spectrum; the sensing performance is good under large / small-scale fading channel environments.
Owner:XIDIAN UNIV
Infrared and visible light information fusion navigation method based on bionic vision
ActiveCN110458877AStrong perceptionPerceived effect is goodImage enhancementImage analysisColor imageVisual perception
The invention provides an infrared and visible light information fusion navigation method based on bionic vision. The method at least comprises the following steps: (1) image enhancement preprocessing: processing a visible light gray scale gradient problem and a noise problem of an infrared image in an acquired image by adopting a Gauss-Laplace operator; (2) image registration, wherein the main purpose of image registration is to remove or suppress inconsistency of geometric space between an image to be registered and a reference image; (3) image fusion: simulating an ON confrontation system by using a Gaussian function to obtain an enhanced image, simulating the confrontation system by using a logarithmic function to obtain a suppressed signal image, then forming a pseudo-color image, andperforming color distortion correction; and (4) visual navigation. The navigation method has the excellent characteristics of strong anti-interference performance, good imaging capability and high resolution, and meanwhile, the image registration algorithm based on the salient region is adopted, so that the registration real-time performance is high, and the navigation algorithm is high in speed.
Owner:湖南科华军融民科技研究院有限公司
Code rate allocation method and device
InactiveCN107396108ASolve bad technical problemsPerceived effect is goodDigital video signal modificationPattern recognitionPattern perception
The invention discloses a code rate allocation method and device. The method comprises the steps that a current frame image is acquired; the current frame image is classified into a salient region and a non-salient region, wherein the saliency measure of the salient region is higher than the saliency measure of the non-salient region; different code rate resources are allocated to the salient region and the non-salient region, wherein code rate resources allocated to the salient region are more than code rate resources allocated to the non-salient region. According to the invention, the technical problem that the effect of a code rate allocation method in the related art is poor relative to human eye perception is solved.
Owner:XIAN WANXIANG ELECTRONICS TECH CO LTD
Point cloud data processing method and device and electronic equipment
ActiveCN112396068AReduce manual interventionReduce the possibility of erroneous feature extractionCharacter and pattern recognitionNeural architecturesData setPoint cloud
The invention provides a point cloud data processing method and device and electronic equipment, and relates to the technical field of data processing, and the method comprises the steps: obtaining anoriginal point cloud data set, extracting the feature information of each point in the point cloud data set, and carrying out the sampling processing of the original point cloud data set, so as to generate a key point set of the original point cloud data set; for each key point in the key point set, calculating Gaussian distances from all points in the original point cloud data set to the key point according to the feature information; determining an adjacent point set of the key point based on the Gaussian distance; performing feature aggregation on the adjacent point sets to generate feature points corresponding to the key points; and counting the feature points corresponding to each key point, and generating a feature point set of the original point cloud data set. According to the point cloud data processing method and device and the electronic equipment provided by the invention, the manual intervention process is reduced, so that the possibility of wrong feature extraction can be reduced, the feature robustness is enhanced, and the final perception performance is improved.
Owner:苏州挚途科技有限公司
CR-based UAV communication network secondary link throughput optimization method
ActiveCN111786712AGuaranteed service qualityGood effectRadio transmissionTransmission monitoringFusion centerQuality of service
The invention belongs to the technical field of unmanned aerial vehicle communication processing, and discloses a CR-based UAV communication network secondary link throughput optimization method, andthe method comprises the steps that: an unmanned aerial vehicle carries out the energy detection and local decision in a single micro-sensing radian; the unmanned aerial vehicle transmits the sensingresult of each micro-sensing radian to a fusion center; the fusion center makes a global decision on all sensing results by using OR criteria; a cognitive unmanned aerial vehicle network makes a dynamic spectrum access decision according to the sensing result of the fusion center; and the micro-sensing radian and the radian number are jointly optimized, so that the throughput of the unmanned aerial vehicle during normal work is optimal. Under the condition of serious channel fading, the UAV has better effects of guaranteeing quality of service (QoS) and improving UAV throughput by utilizing the method and the device. According to the method, the radian value of the circular motion flight angle of the unmanned aerial vehicle is taken as an object, and the spectrum sensing performance and the spectrum effect optimization scheme in the periodic motion process of the unmanned aerial vehicle are ingeniously analyzed.
Owner:AIR FORCE UNIV PLA
Covariance matrix spectrum sensing method
InactiveCN109194417AAccurate estimateSolve power problemsBaseband system detailsTransmission monitoringFrequency spectrumComputer science
The present invention discloses a covariance matrix spectrum sensing method. The processing process of the method comprises the steps of: performing estimation in a quiet period of an authorized userto obtain noise power; in a current sensing time slot, performing multi-times sampling of signals from a plurality of channels, and forming a sample vector by employing the samples obtained through each sampling; calculating a covariance matrix according to all the sample vectors; calculating test statistics according to the sum of absolute values of values of all the elements in the covariance matrix and the noise power; and finally, determining whether the sensing time slot has authorized user signals or not through comparison of the test statistics and a judgment threshold. The covariance matrix spectrum sensing method employs the samples obtained in the sampling in the quiet period of the authorized user to estimate the noise power to accurately estimate the noise power because the quiet period does not comprise the authorized user signals; and moreover, the sum of absolute values of values of all the elements in the covariance matrix and the noise power are employed when the teststatistics is calculated to obtain a better sensing performance.
Owner:NINGBO UNIV
Flexible quadruped robot
The invention provides a flexible quadruped robot. The flexible quadruped robot mainly solves the problem that an existing quadruped robot has low topographic adaptation capacity. The flexible quadruped robot is characterized in that a hydraulic drive mode is adopted in a drive part of a robot structure, internal knee and elbow type joints are adopted in a leg structure, and a hip, thighs, shanksand bones of feet are connected through three rotary joints; a flexible trunk is composed of front and rear supporting frames and a flexible spine, the front and rear supporting frames are connected with the hip so as to connect a four-leg part, the flexible spine is composed of two spring plates symmetrically mounted and four groups of hydraulic cylinders distributed up-down and left-right to enhance the stability of mechanisms; and a side-sway structure is arranged between the hip and the supporting frames, the freedom degree of an elevation angle direction is provided for the robot, and therobot realizes the motion of the mechanisms of all parts through a hydraulic drive mode. The flexible quadruped robot can improve the motion stability and harmony of the robot, and has the characteristic that driving force is large so as to walk at high speed under the condition of high load.
Owner:NORTHEAST GASOLINEEUM UNIV
Automatic equalization optimization method and system of wireless channel resources
ActiveCN105120481ARealize automatic balance optimizationImprove efficiencyNetwork traffic/resource managementTelecommunicationsEqualization
The invention discloses an automatic equalization optimization method and system of wireless channel resources and belongs to mobile communication field. The method comprises steps of: acquiring telephone traffic statistic data of a cell to be optimized; computing the required amount of voice service channels and the required amount of data service channels of the cell to be optimized according to the telephone traffic statistic data; and performing equalization optimization on the voice service channels and the data service channels of the cell to be optimized according to the required amount of voice service channels and the required amount of data service channels and in combination with a network configuration parameter of the cell to be optimized. The method and the system are based on the real-time telephone traffic statistic data, achieve automatic equalization optimization of the data service and the voice service in the cell, and effectively improve the data and voice access and sensing performance of the cell. Compared with a manual optimization method, the method greatly improves the optimization efficiency and optimization effect of the wireless channel resources of the cell, and better satisfies the application demands of a user.
Owner:BEIJING TUOMING COMM TECH
Spectrum sensing method based on Bayes criterion and energy detection method
InactiveCN106788817AReduce the impact of spectrum sensing performanceReduce computational complexityTransmission monitoringFrequency spectrumFalse alarm
The invention discloses a spectrum sensing method based on a Bayes criterion and an energy detection method. The method comprises the steps of sampling signals in a monitoring channel by a current sensing user, thereby obtaining sampling signals; obtaining detection statistic quantity according to all sampling point signals in the sampling signals and carrying out estimation to obtain distribution of noise power of the current sensing user according to all sampling point signals in the sampling signals; obtaining an accumulated distribution function of the distribution of the noise power of the current sensing user according to the distribution of the noise power of the current sensing user; on the basis of the Bayes criterion and the energy detection method, calculating a judgment threshold according to the accumulated distribution function under the condition that a target false alarm probability is set; and finally, judging whether an authorized user signal exists in the monitoring channel or not by comparing the detection statistic quantity with the judgment threshold. The method has the advantages that influences of noise power uncertainty on the spectrum sensing performance can be reduced well, and the good spectrum sensing performance is obtained.
Owner:NINGBO UNIV
Induction anti-extrusion safety door
InactiveCN108825062APrevent door closingBlock offNon-mechanical controlsWing fastenersEngineeringElectric control
The invention discloses an induction anti-extrusion safety door. The induction anti-extrusion safety door comprises a door frame and a door leaf hinged to the door frame. The door leaf is provided with a door lock handle. An electronic control telescopic structure connected with an electronic control unit is arranged on the upper border of the door frame. The telescopic end of the electronic control telescopic structure faces the door leaf. The induction anti-extrusion safety door further comprises human body induction sensors connected with the electronic control unit. The human body induction sensors are arranged at the positions, on the door lock handle side, of the door leaf, or the human body induction sensors are simultaneously arranged at the positions, on the door lock handle side,of the door leaf and the door frame, or the human body induction sensors are arranged at the positions, on the door leaf hinged side and the door lock handle side, of the door frame and the door leafcorrespondingly. By adopting the induction anti-extrusion safety door, through perception of the human body induction sensors to the human body and cooperation with the electronic control telescopicstructure, the problem that hands are extruded by the door can be effectively avoided, and normal use of the door is not affected.
Owner:戴鲁汉
Energy detection spectrum sensing method for estimating noise power during silent period of authorized user
InactiveCN109120360ASolve the problem of overestimation of noise powerSolving problems that require knowledge of the noise power itselfTransmission monitoringFrequency spectrumEngineering
The invention discloses an energy detection spectrum sensing method for estimating a noise power during a silent period of an authorized user. The method comprises: estimation is carried out during asilent period of an authorized user to obtain a noise power; during a current sensing time slot, multi-times sampling is carried out on signals from one channel and one sample is obtained for each sampling; energy is calculated based on all samples; according to the energy and the noise power, a checking statistic amount is calculated; and then the checking statistic amount is compared with a decision threshold to determine whether an authorized user signal exists in the current sensing time slot. The energy detection spectrum sensing method has the advantages: noise power estimation is carried out by using the sampled samples during the silent period of the authorized user; because no authorized user signal exists during the silent period of the authorized user, the noise power can be estimated accurately; while the checking statistic amount is calculated, the good sensing performance is obtained by using the energy of the sampling signals in the current sensing time slot and the estimated noise power.
Owner:NINGBO UNIV
Significance detection method based on global and local contrast
InactiveCN105512663AQuality improvementReasonable portrayalCharacter and pattern recognitionPattern recognitionSaliency map
The invention discloses a significance detection method based on global and local contrast, and the method is based on three significance operations: 1, CESC: considering the scarcity of surrounding image patch blocks; 2, CSC: extending a CESC algorithm through considering the relative position of a central image patch block with the surrounding image patch blocks; 3, GC: calculating the significance through employing a patch of a contrast image of the whole image. Finally, the three contrast images are combined. In an RGB color space, a detection result, compared with a result obtained through a conventional method, is easier and more effective. A saliency map is more attached to a result obtained by a human eye visual perception system. The method is high in quality of significance detection, and the impact on the detection result from the physical condition, optical condition and color difference of the image is small. The method is not limited by a sample, and is more suitable for actual application.
Owner:NANJING UNIV OF POSTS & TELECOMM
Spectrum sensing method, device, equipment and system, and readable storage medium
InactiveCN109309538AEasy to detectPerceived effect is goodTransmission monitoringCognitive userMaximum eigenvalue
The invention discloses a frequency spectrum sensing method, which comprises the following steps of acquiring radio sampling signals; carrying out noise reduction processing on the sampling signals inorder to obtain noise reduction signals; carrying out splitting and recombination on the noise reduction signals according to a DAR splitting and recombination technology in order to obtain two signal matrixes; respectively computing a difference of a maximum eigenvalue and a minimum eigenvalue according to the eigenvalues of the two signal matrixes in order to obtain a two-dimensional eigenvalue; and carrying out feature classification and division on the two-dimensional eigenvalue in order to obtain a classification result of the radio sampling signals. According to the method, the signalsare subjected to DAR splitting and recombination, and then signal feature information is extracted through THE DMM, the detection performance of a spectrum can be better improved under a condition that the number of cognitive users is small and a signal-to-noise ratio is low, the spectrum sensing performance is improved, the spectrum sensing effect is optimized, and accurate classification of thesampling signals is achieved. The invention further discloses a spectrum sensing device, equipment and system and a readable storage medium, which have the beneficial effects.
Owner:GUANGDONG UNIV OF TECH
Time shifted harmonics generator
ActiveUS8290169B1Peak level is increasedPerceived effect is goodGain controlSpeech analysisAudio power amplifierHarmonic
An electrical signal derived from an audio source is passed through an amplifier and is then divided into two discrete signal paths. The signal traveling along the first path travels through a high pass filter and is then split so that a portion is delayed and a portion passes through a harmonics generator so that the harmonics are advanced ahead of the delayed portion from the high pass filter. The split circuit is then combined in a summing amplifier. The second portion of the signal is also delayed before it also travels to the mixer. The combined signal is passed through an amplifier and then fed into an output transducer. The use of a delay both on the input signal and the portion of the signal which passed through the high pass filter output just before the summing amplifier enables the harmonics to not be masked by the lower frequencies, making the effect more apparent.
Owner:FREEDMAN ELECTRONICS
Automatic time compensation correction method and synchronous sampling universal module
ActiveCN113759784AStrong applicabilityReduce terminal time correction costsProgramme controlComputer controlTime errorHemt circuits
The invention discloses an automatic time compensation correction method and a synchronous sampling universal module. The method comprises steps of reserving a sampling channel L0 in a digital-to-analog conversion chip, dividing a debugging analog signal into two paths, and connecting two paths to a conditioning filter circuit channel L1 and the channel L0 of the digital-to-analog conversion chip; the sampling point time Tn0 and the sampling point time Tn1 of the channel L0 and the channel L1 being obtained; tn1-Tn0 is a time error value of the analog signal conditioning filter circuit, digital-to-analog conversion acquisition of channels L1 to L8 is completed, total time Ts1 is recorded, a channel L0 is added for secondary digital-to-analog conversion reading, and the total time of digital-to-analog conversion acquisition is Ts2; and Ts2-Ts1 is a single-channel digital-to-analog conversion time error. The universal module comprises a control module, a time synchronization module, a clock module, a sampling module, a power supply module and an interface module, inherent time error correction is carried out in the time synchronization module, time compensation is carried out in the sampling module by utilizing an automatic time compensation correction method, synchronous sampling precision is high, and applicability is wide.
Owner:国网江苏省电力有限公司淮安供电分公司 +2
Information display output system, output control method and output control server
InactiveCN101751417AImprove handling efficiencyShorten the timeSpecial data processing applicationsTemplate basedComputer science
The invention discloses an information display output system, an output control method and an output control server, which aim at solving the problems of poor sensing effect of users and low efficiency during processing in the service process requiring users to participate and complete. The system comprises a first output control server, a first display terminal, a second output control server and a second display terminal, wherein the first output control server is used for outputting first information to be displayed and is used for sending second information related to the first information and template marks corresponding to the second information, the first display terminal is used for displaying the first information output by the first output control server, the second output control server is used for receiving the second information sent out by the first output control server and the template marks corresponding to the second information, finding corresponding templates in the template base according to the received template marks, synthesizing the received second information and the found templates into display page information and outputting the synthesized display page information, and the second display terminal is used for displaying the display page information output by the second output control server.
Owner:CHINA MOBILE COMM CORP TIANJIN
Multi-antenna cooperative spectrum sensing method based on information geometry and differential evolution clustering algorithm
ActiveCN110365434AImprove decision accuracyAvoid calculationCharacter and pattern recognitionTransmission monitoringCluster algorithmFrequency spectrum
The invention discloses a multi-antenna cooperative spectrum sensing method based on information geometry and a differential evolution clustering algorithm. The multi-antenna cooperative spectrum sensing method comprises the following steps: dividing a received signal Xj into two clusters according to a clustering mode, i.e., respectively carrying out the principal component analysis of the sum, and correspondingly obtaining and constructing covariance matrixes R1 and R2 corresponding to the sum and the construction; extracting signal features according to information geometry; in an noise environment, performing clustering processing and principal component analysis processing on the P noise signal matrixes to obtain a sum, calculating a corresponding Riemann mean value, and mapping the covariance matrixes R1 and R2 obtained in the step S2 to a statistical manifold; and taking the Riemannian mean value sum as a reference point, and analyzing the distances d1 and d2 between the pointsto obtain a signal feature T. According to the technical scheme, a threshold does not need to be calculated, and whether the main user exists or not is judged through the differential evolution clustering algorithm, and higher judgment precision is achieved.
Owner:GUANGDONG UNIV OF TECH
Method and acoustic system for generating stereo signals for each of separate sound sources
InactiveUS7831052B2Perceived effect is goodMicrophones signal combinationTwo-channel systemsSound sourcesEngineering
Owner:SIVANTOS PTE LTD
A Cooperative Spectrum Sensing Approach in Cognitive Networks
InactiveCN103326797BEliminate dependenciesHigh feasibilityTransmission monitoringSensing dataType frequency
Owner:SHANGHAI JIAOTONG UNIV
3D printing method for braille books
ActiveCN110281527AOvercoming printing defectsOvercome deficienciesAdditive manufacturing apparatus3D object support structuresSelective laser sinteringComputer graphics (images)
The invention relates to a 3D printing method for braille books. The method specifically comprises the following steps that S1, a three-dimensional model database with characters corresponding to braille projection points is established; S2, a braille book three-dimensional model is made; S3, the braille book three-dimensional model is sliced to obtain a G code file which can be recognized by a 3D printer; S4, the G code file obtained in the step S3 is transmitted to the 3D printer, a selective laser sintering forming machine is used for sintering printed braille pages, and entities of the braille book three-dimensional model are printed; S5, the printed braille book entities are subjected to post-treatment, so that the surfaces of the braille book entities are flatter and more smooth; and S6, the braille book entities are bound according to the page number sequence, and the braille book entities are bound into the braille books. The braille projection points manufactured by using the method are uniform and consistent, resistant to friction and capable of being repeatedly folded and used.
Owner:BEIJING E PLUS 3D TECH CO LTD
Spectrum Sensing Method Based on Support Vector Machine
InactiveCN104135327BReduce complexityImprove generalization abilityTransmission monitoringFrequency spectrumMaximum eigenvalue
The invention relates to a spectrum sensing method. In this method, the spectrum sensing problem is modeled as a signal classification problem. After data processing and feature extraction, the support vector machine is used as a classifier to realize spectrum sensing. The steps are as follows: firstly, collect signals in the presence and absence of primary user signals respectively; secondly, extract features and mark labels; thirdly, optimize parameters and use training data for learning to obtain the optimal classification hyperplane; Fourth, extract the characteristics of the signal to be tested, and use the obtained classification hyperplane for discrimination to achieve spectrum sensing capabilities. For the convenience of description, the ratio of the maximum and minimum eigenvalues of the signal covariance matrix is selected as the classification feature. In specific applications, other features, such as signal energy, signal spectrum, and cyclic spectrum, can also be selected as classification features. The invention not only solves the problem that the decision threshold is difficult to set in the common spectrum sensing method, but also has superior sensing performance.
Owner:SHANGHAI UNIV
Cell deactivation control method and apparatus
InactiveCN109548100APerceived effect is goodAvoid interruptionHigh level techniquesNetwork planningTelecommunicationsNetwork management
The invention relates to the field of communications, in particular to a cell deactivation control method and apparatus, which is used for solving the problem that in the prior art, when a deactivation operation is performed on a cell, a service of a user terminal of the cell is interrupted. The method comprises the following steps: after a network management device issues a cell deactivation delay instruction for a first cell to a base station, the base station gradually lowers CRS power of the first cell according to a preset period and a preset power reduction step length, and then the first cell is deactivated until it is determined that the CRS power of the first cell reaches a minimum power threshold; and in this way, the problem that the service of the user terminal of the cell is interrupted in the process of performing deactivation operation on the cell is avoided, the problem of system paralysis caused by a large amount of signaling storm impacts due to the fact that all interrupted user terminals re-access a new cell in the same time is avoided, and the problem of cell congestion caused by the fact that a large number of users cannot be received by a target cell is avoided.
Owner:DATANG MOBILE COMM EQUIP CO LTD
Actively-fixed left ventricle pacing electrode lead
ActiveCN105999550ASolve problems such as easy dislocationImprove the success rate of surgeryCoupling device detailsHeart stimulatorsDislocationLeft ventricle wall
The invention provides an actively-fixed left ventricle pacing electrode lead. The actively-fixed left ventricle pacing electrode lead comprises a connector, a lead body, a ring electrode and a fixing device; the lead body comprises an outer lead layer and an inner lead layer, the outer lead layer enables the ring electrode to be connected with the positive electrode of the connector, the inner lead layer enables the fixing device to be connected with the negative electrode of the connector, and the fixing device is formed by winding metal. The actively-fixed left ventricle pacing electrode lead has the advantages that the problem that electrodes are prone to dislocation in the operation process can be solved, and the success rate of an operation is effectively increased; meanwhile, the actively-fixed left ventricle pacing electrode lead is good in pacing and sensing effect, effectively improves the living quality of patients and is safe, effective and convenient and easy to use.
Owner:SHAANXI QINMING MEDICAL CO LTD
TSTKS algorithm based rapid detection method for abnormal discharge of exhaust gas pollutant
InactiveCN110412215AIncreased sensitivityPerceived effect is goodGas analyser construction detailsSpecial data processing applicationsAbnormal dischargeComputer science
The invention relates to a TSTKS algorithm based rapid detection method for abnormal discharge of an exhaust gas pollutant. The method comprises the following steps that the type of exhaust gas whichneeds monitoring is selected according to the atmosphere discharge standard; monitoring data of the waste gas pollutant which needs monitoring is obtained, and a data receiving buffer area is established; and an intermediate search branch is introduced to a binary search tree via a TSTKS algorithm to establish a ternary tree search strategy based on discharge abnormity characteristic of the exhaust gas pollutant, and discharge abnormity of the exhaust gas pollutant is rapidly detected by ternary tree search and measurement. Thus, discharge abnormity of the exhaust gas pollutant can be detectedrapidly and efficiently, and the detection accuracy is ensured.
Owner:DONGHUA UNIV
Automobile assistance driving system based on ultrasonic detection
InactiveCN109606257APerceived effect is goodImprove reliabilitySignalling/lighting devicesAcoustic wave reradiationPower flowUltrasonic attenuation
The invention discloses an automobile assistance driving system based on ultrasonic detection, which relates to the technical field of automobile assistance driving. The system includes an ultrasonicacquisition module, a parameter acquisition module, and an MCU control module. The ultrasonic acquisition module perceives road surface and surrounding environment thereof by utilizing an ultrasonic coding modulation method, and sends perception data to the MCU control module; the parameter acquisition module is used for acquiring current driving speed and a motor current of an automobile, and sending obtained vehicle speed data and current data to the MCU control module; and the MCU control module determines a shape and orientation and relative distance between an obstacle and an automobile body based on the received perception data and the vehicle speed data, and analyzes whether a driver has a corresponding processing operation according to the current data, if not, the MCU control module turns on an assisted driving work mode and automatically assists in driving the automobile. The road surface and the surrounding environment thereof are perceived by the ultrasonic acquisition module, so that the reliability of the system, and the stability and reliability of assisted driving are improved, and a perception effect is good.
Owner:电子科技大学成都学院
Lead-free pacemaker and lead-free pacemaker system
ActiveCN109793989APerceived effect is goodApplicable implant requirementsTransvascular endocardial electrodesExternal electrodesCardiac musclePattern perception
Owner:MICROPORT SORIN CRM (SHANGHAI) CO LTD
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