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769results about How to "The judgment result is accurate" patented technology
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Dust removal method and device applied to air conditioner outdoor heat exchanger
InactiveCN104729016AAchieve dust removal effectEfficient removalMechanical apparatusCleaning heat-transfer devicesEngineeringHigh heat
The invention provides a dust removal method and device applied to an air conditioner outdoor heat exchanger. An outdoor unit of an air conditioner comprises the outdoor heat exchanger and an air duct system composed of a motor and vanes. The dust removal method includes the following steps that whether dust removal processing needs to be carried out on the outdoor heat exchanger is judged; when it is judged that the outdoor heat exchanger needs dust removal processing, at least the motor is controlled to rotate reversely, and when the outdoor unit works normally, the motor rotates forwards. By means of the technical scheme, the effect that the air conditioner automatically carries out dust removal on the outdoor heat exchanger is realized, a higher heat exchange efficiency of a condenser is guaranteed, and the complex operation of detaching the outdoor unit when the condenser is cleaned manually is avoided.
Owner:GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
Method of positioning problem regions covered with indoor wireless network
InactiveCN103634810AGuaranteed accuracyGuaranteed matchGeometric CADNetwork topologiesSpatial structureStructure of Management Information
Owner:RANPLAN WIRELESS NETWORK DESIGN
Traffic image multi-type vehicle detection method based on deep study
ActiveCN106096531AReduce complexityReduce the amount of parametersCharacter and pattern recognitionReduced modelNerve network
The invention discloses a traffic image multi-type vehicle detection method based on deep study. The traffic image multi-type vehicle detection method based on deep study firstly combines a nerve network characteristic with a region generation algorithm, realizes two processes-region generation and region determination-at the same time through using a nerve network conventional layer, uses a background model to determine a motion area of a discrete series image targeting a specific scene and provides an extra reference basis to region generation, and combines with a vehicle detection result to perform upgrading and correction on the background model according to different conditions. Besides, the traffic image multi-type vehicle detection method also brings forward a network model compression scheme to reduce model parameters and calculation time, brings forward a new detection result optimization means based on grouped error calculation to replace a conventional non-maximum-value inhibition scheme, and improves overall detection accuracy.
Owner:安徽国联信息科技有限公司
Wavelet transformation and deep learning-based rolling bearing weak fault diagnosis method
The invention discloses a wavelet transformation and deep learning-based rolling bearing weak fault diagnosis method. The method comprises the following steps: a rolling bearing vibration signal is obtained, and the acquired vibration signal is subjected to continuous wavelet transformation to obtain a time-frequency diagram; autocorrelation operation is performed on wavelet coefficients corresponding to each frequency on the time-frequency diagram to filter out noise interference and extract periodic fault components; the Hilbert transformation is used to perform envelope demodulation to obtain a fault characteristic frequency; a processed time-frequency diagram is input as a feature diagram, and categories of early faults are determined by training a deep learning classification model. Theoretical and experimental results show that fault categories can be determined accurately at an early stage when weak fault of a rolling bearing occur based on an improved wavelet time-frequency diagram used as the classification model for input training, right determination results can be given when the method is applied to different bearings, high training speed can be realized, and high actual application value can be achieved.
Owner:绍兴声科科技有限公司
Method for detecting fatigue driving
InactiveCN101692980AImprove anti-interference abilityImprove adaptabilityCharacter and pattern recognitionSensorsEyelidContrast level
The invention discloses a method for detecting fatigue driving. The method comprises the following steps: using a rectangular characteristic template in eye image areas of a driver to analyze the eyes so as to obtain upper eyelid lines; judging the closing states of the eyes according to curvatures or curvature characteristic values of the upper eyelid lines; counting the closing states of the eyes; and judging whether the driver is in a fatigue state or not according to a counting result. In the method, the opening and the closing of the eyes are judged according to the shapes of the upper eyelids, and because the relative contrast of the upper eyelid lines is stronger, the upper eyelid lines are more resistant to interferences. Moreover, the upper eyelid lines have better adaptability to expression changes, thus the judging result is more accurate.
Owner:SHEHNCHZHEHN SAFDAO TECH KORPOREJSHN
Distribution line breakage monitoring method and device based on voltage and current vectors
The invention discloses a distribution line breakage monitoring method and device based on voltage and current vectors. The method and device are applied in a three-phase three-wire power grid system with a neutral point not grounded or not directly grounded. The line breakage monitoring device is installed on a monitoring point of a line. The line leakage monitoring device works out the effective value and the phase angle of the three-phase line voltage and three-phase current at the same moment through the three-phase line voltage waveform and three-phase current waveform of a periodic three-phase synchronous sampling distribution line; whether a single-phase line breakage fault occurs on an upper-side line of the monitoring point or not is judged by computing and comparing the proportional relation of the sum of the largest voltage, the smallest voltage and the second smallest voltage in the effective value of the three-phase line voltage and the phase difference value relation of the smallest voltage and the second smallest voltage; whether a single-phase line breakage fault occurs on an upper-side or lower-side line of the monitoring point by comparing the proportional relation between the negative-sequence current and the positive-sequence current; whether a single-phase ground fault occurs on a lower-side line of the monitoring point by calculating the zero sequence current value.
Owner:福建省银邦电力工程有限公司
Method for determining travel track of mobile terminal
ActiveCN104596507AHigh positioning accuracyThe location information is accurateNavigation instrumentsComputer terminalControl theory
Owner:成都小步创想畅联科技有限公司
Method for rapidly and accurately judging false wiring of metering device
ActiveCN104316822ATroubleshooting Voltage Reference IssuesSolve the discrimination problemElectrical testingPhase differencePower factor
The invention discloses a method for rapidly and accurately judging false wiring of a metering device. The method comprises the following steps that firstly, it is ensured that the measuring conditions that the voltage of a three-phase and three-wire circuit is symmetrical, and the three-phase load power factor angles are equal are met; secondly, six phase angle differences on the three-phase, three-wire and two-element metering device are measured through a phase position voltammeter; the relation of the current phase angle of the three-phase, three-wire and two-element metering device is analyzed, the current phase difference is determined, the voltage phase angle relation is analyzed, the voltage phase sequence is determined, the relation of the voltage and the current phase angle is analyzed, the voltage phase difference is determined through the phase crossing method, the voltage and current phase angle relation is analyzed finally, and the current direction is determined. The method has the advantages that the algorithm is simple, the data size is small, using is convenient, and the method is rapid and accurate.
Owner:STATE GRID CORP OF CHINA +1
Anti-collision control system and control method thereof
InactiveCN101992740AThe judgment result is accurateAvoid human errorPedestrian/occupant safety arrangementAutomatic initiationsControl systemAlarm device
The invention provides an anti-collision control system and a control method thereof and the control system and control method are used for the anti-collision of the vehicle. The anti-collision control system comprises a sensor, a controller and a warning device, wherein the sensor is used to detect the distance between a vehicle and an obstacle; the controller is electrically connected with the sensor and used to obtain a warning vehicle distance according to the current speed of the vehicle; the warning device is electrically connected with the controller; if the distance is less than the warning vehicle distance, the controller controls the warning device to warn; and if the distance is less than the brake distance, the vehicle brakes automatically. The anti-collision control system provided by the invention can judge the warning vehicle distance or brake distance according to the current vehicle speed, thus the judgment result can be more accurate and the anti-collision method can be more intelligent.
Owner:SHANGHAI DIANJI UNIV
Active clamp flyback converter self-adaptive control method and circuit
ActiveCN108809107AReduce package sizeAchieve adaptiveEfficient power electronics conversionDc-dc conversionActive clampConductor Coil
The invention provides an active clamp flyback converter self-adaptive control method and circuit, which are used for controlling a conduction time of a clamper tube. The active clamp flyback converter self-adaptive control method and circuit have the following characteristics and effects: a multiplexing auxiliary winding voltage sampling pin determines whether a main switch pipe ZVS is switched on or not, and no additional pin is needed, so that the encapsulation size is reduced; a switch node voltage proportional value in the conduction period of the main switch pipe is saved, and the conduction realization situation of ZVS is determined cycle by cycle on a rising edge of a main switch pipe driving signal, so that the self adaption can be actually realized; since the saved switch node voltage proportional value is gradually updated cycle by cycle, the determination result of the conduction realization situation of the main switch pipe ZVS is not influenced by the device precision, and the determination result is more accurate; and by virtue of the bidirectional control for the width of the clamper pipe driving signal, on the premise of realizing the conduction of the main switchpipe ZVS, the negative current flowing by a diode of the main switch pipe body can be reduced as far as possible, and the loss can be reduced.
Owner:SHENZHEN NANYUN MICROELECTRONICS CO LTD +1
Method and apparatus for automatically identifying a region of interest in three-dimensional CT image
ActiveCN107480677AThe judgment result is accurateImprove accuracyImage enhancementImage analysisThree dimensional ctComputer science
The present invention discloses a method and an apparatus for automatically identifying a region of interest in a three-dimensional CT image. The method includes: training a 3D convolution neural network through a three-dimensional CT image marked with a region of interest to obtain a 3D convolutional neural network with a high identification rate for the region of interest; then, through the trained 3D convolution neural network, identifying the obtained three-dimensional CT image and obtaining the region of interest; and calculating the volume, the expansion direction and the expansion diameter of the interest of interest. With the method of the embodiments in the invention, the region of interest representing the lesion can be obtained automatically and efficiently, and the identifying accuracy is also higher. In addition, the volume, the expansion direction and the expansion diameter of the lesion can be automatically calculated, therefore, helping the doctor to make a more accurate judgment of the condition of a patient.
Owner:HANGZHOU SHENRUI BOLIAN TECH CO LTD +1
High reflection surface defect detection method based on image processing and neural network classification
ActiveCN108520274AReduce the probability of false detectionReduce complexityImage enhancementImage analysisImaging processingFeature extraction
The invention discloses a high reflection surface defect detection method based on image processing and neural network classification. The method includes: performing basic processing including background deduction and denoising on an originally acquired image, preliminarily determining positions of parts possibly having defects through feature extraction and obtaining a series of area images of the corresponding positions, inputting an image sequence to a neural network classifier regarding a local feature area block as training data, determining whether the defects are real defects, and regarding an output result of the classifier as a final determination result. According to the high reflection surface defect detection method, defect feature search and extraction are performed by employing a front-end two-dimensional digital image processing module, feature filtering and enhancement are performed with the combination of a rear-end neural network classifier, the accuracy of the search result is enhanced, surface defects of a detected member are fully extracted, the probability of false detection and omitted detection in the conventional image processing detection method is reduced, and the operation efficiency and the versatility are simultaneously considered.
Owner:TIANJIN UNIV
A speech quality detection method and device
ActiveCN109446524ARealize full coverage detectionAvoid Full Coverage DetectionSemantic analysisSpecial service for subscribersItem CollectionSpeech sound
The invention discloses a speech quality detection method and device, which relates to the technical field of speech detection, and mainly aims at improving the comprehensiveness and accuracy of speech quality detection. The main technical scheme of the invention is characterized by converting the speech to be quality-checked into the text to be quality-checked; extracting quality inspection itemsone by one from a quality inspection item collection, wherein the quality inspection items are used for detecting whether the text to be inspected conforms to requirements; using a pre-trained machine learning model to detect whether the text to be inspected contains content matching with the quality inspection item; according to the matching result and the detection rule corresponding to the quality inspection entry, determining whether the speech to be inspected is qualified or not. The invention is used for the normative detection of the voice data content.
Owner:THE FOURTH PARADIGM BEIJING TECH CO LTD
Multi-stage phishing website detection method and detection system based on supervised learning
ActiveCN109510815AReduce testing costsAccurate identificationCharacter and pattern recognitionTransmissionSupervised learningUniform resource locator
The invention relates to a multi-stage phishing website detection method and detection system based on supervised learning. A first detection layer performs phishing website judgment based on a blacklist database or a white list database, the to-be-detected website is directly output if the website is matched with the blacklist database or the white list database; or a second detection layer extracts features of the to-be-detected website URL and constructs a classifier model to perform detection according to the URL features of the known phishing website; if the website is detected as a suspicious website, a third detection layer downloads the page of the to-be-detected website to acquire the page content features, and the classifier model is constructed according to the known phishing website content features so as to perform the detection; an output end outputs the result that to-be-detected website is the phishing website or the normal website, and adds the data to the blacklist database and the white list database. The primary black-white list judges the known website and reduces the detection cost; the secondary URL detects and distinguish the clear phishing website or the normal website; and the third-stage page content detection identifies the suspicious website of the secondary detection, the judgment result is precise; an identification result is accurate, and the detection time is short.
Owner:HANGZHOU ANHENG INFORMATION TECH CO LTD +1
Method and system for judging text similarity
InactiveCN107967255ANo computational difficultiesNo difficultySemantic analysisSpecial data processing applicationsTwo-vectorText categorization
The invention belongs to the technical field of text classification and provides a method and system for judging the text similarity. The method and system for judging the text similarity are used forovercoming the defects which exist in three kinds of text similarity judgement algorithms in the prior art separately. The method comprises the steps 1, a vector space model is established and subjected to text quantization to form a processible object; 2, a Siamese network is used for establishing a text semantic similarity extraction model, in the Siamese network, a text semantic extraction network and a similarity judgement network are in series connection, and meanwhile optimization is conducted at the sample training stage; 3, based on semantic characteristic expression of samples at thetraining stage, a text similarity calculation function of the included angle cosine based on characteristic vectors and a final loss function are established; 4, two pieces of text to be tested are input, after the text to be tested is subjected to semantic characteristic extraction based on the Siamese network, the cosine included angle distance of the two vectors is calculated, a threshold value is set, and when the cosine included angle distance of the two vectors is larger than the threshold value, the similarity is judged, otherwise, the dissimilarity is judged.
Owner:CHINA TECHENERGY +1
Electric heating structure and air conditioner compressor starting system and method
InactiveCN105953359AImprove preheating efficiencyImprove comfortPositive displacement pump componentsSpace heating and ventilation safety systemsElectricityConstant power
The invention relates to the field of air conditioner control, in particular to an electric heating structure and an air conditioner compressor starting system and method. The electric heating structure comprises an electric heating control system and an electric heating device. The electric heating control system comprises a driving circuit and an electronic switch circuit. The driving circuit is used for adjusting the duty ratio of the electronic switch circuit. The electronic switch circuit is used for adjusting the output power of the electric heating device according to the duty ratio. The electric heating device is used for preheating an air conditioner compressor. According to the technical scheme, the output power of the electric heating device can be adjusted according to the exhaust temperature of the compressor; compared with the method that preheating is conducted by adopting a constant-power electric heating device in the prior art, the heating speed of the compressor is high, and the preheating process safety can be ensured; and accordingly, the starting waiting time of an air conditioner compressor system under a low-temperature environment is reduced, energy consumption is reduced, and meanwhile, the user experience effect is improved.
Owner:GD MIDEA AIR-CONDITIONING EQUIP CO LTD +1
Method and system for advertisement recommendation based microblog
ActiveCN103617230AReal-timeGood effectMarketingSpecial data processing applicationsFeature vectorData dredging
The invention belongs to the field of data mining and provides a method and system for advertisement recommendation based a microblog. The method comprises the steps that microblog data are read; the microblog data are initialized and a microblog text lexical item set is obtained; stop words of the microblog text lexical item set are deleted and a microblog text original feature lexical item set is obtained; mapping is conducted on the microblog text original feature lexical item set and a feature lexical item dictionary, whether lexical items in the microblog text original feature lexical item set exist in the feature lexical item dictionary or not is judged, and the tf-idf values of the appearing lexical items are calculated and serve as the feature values of the lexical items; whether the lexical items of the feature lexical item dictionary exist in the microblog text original feature lexical item set or not is judged and the feature values of the lexical items which do not appear are marked to be zero; feature vectors of the feature values obtained through calculation are automatically classified to classifications divided in advance; according to an automatic classification result, advertisements are recommended to a user. The advertisements recommended by the method and system are accurate and the effect is good.
Owner:SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
Direct-current single-pole ground fault determination method of flexible direct-current power transmission system
ActiveCN104820157AAccurate identificationIncrease overrun durationFault locationAs DirectedLow voltage
The invention discloses a direct-current single-pole ground fault determination method of a flexible direct-current power transmission system. Voltages to ground of positive and negative direct-current buses of a direct-current side are obtained; if an absolute value of one voltage value is less than a low-voltage limiting value and an absolute value of the other voltage value is larger than a high-voltage limiting value and a condition that duration time is larger than a set screening time is met, a single-pole ground fault is determined to occur in a direct-current bus corresponding to the voltage value with the absolute value less than the low-voltage limiting value. According to the invention, on the basis of the changing feature of the voltage during the direct-current single-pole ground fault development process, the voltages to ground of the positive and negative direct-current buses are selected as direct-current single-pole ground fault identification parameters. Besides, overtime of the voltage parameter is also used as another main criterion, thereby improving the fault identification accuracy and avoiding wrong determination caused by other faults. With the method, the direct-current single-pole ground fault of the flexible direct-current power transmission system of the modularized multi-level converter can be identified rapidly and accurately.
Owner:STATE GRID CORP OF CHINA +4
Security judging method of rail irregularity state
ActiveCN102521432AThe judgment result is accurateSpecial data processing applicationsEngineeringMulti body
The invention discloses a security judging method of a rail irregularity state in the technical field of railway security operation control. The security judging method comprises the following steps of: establishing a vehicle rail model in multi-body dynamic simulation software; determining a rail irregularity parameter; inputting the rail irregularity parameter into the vehicle rail model and generating an executable code in the multi-body dynamic simulation software; inputting actually-measured rail irregularity data into the executable code, and operating the executable code to obtain wheel-rail acting force; calculating a security evaluation index of the rail irregularity state according to the wheel-rail force; processing the calculated security evaluation index of the rail irregularity state; and comparing the processed security evaluation index of the rail irregularity state with a pre-set security standard so as to obtain a security judging result of the rail irregularity state. Compared with the conventional security judging method of the rail irregularity state, the security judging method provided by the invention is more accurate in judging result.
Owner:BEIJING JIAOTONG UNIV
Coma degree evaluating method based on multiple indexes of non-linearity and complexity
InactiveCN102178514AReal-time monitoring of comaReduce the influence of subjective factorsCharacter and pattern recognitionDiagnostic recording/measuringAlgorithmBrain state
The invention discloses a coma degree evaluating method based on multiple indexes of non-linearity and complexity, which is used for monitoring the brain state of a patient in a coma, and can realize continuous coma depth monitoring, and coma phase grading and early warning. Multiple complexity indexes such as complexity, Lyapunov exponent, approximate entropy, related dimensions, and the like are extracted from coma electroencephalographic signals by adopting a nonlinear dynamics analytical method, and a comprehensive coma state exponent is obtained by combining a traditional GOS (Glasgow Outcome Scale) evaluation system and a traditional GCS (Glasgow Coma Scale) evaluation system; the coefficients of the correlation between the parameters are obtained by clinical experiments; a coma state grading database is founded and a parameter fusion coefficient is determined on the basis of clinical effects; and finally, complete conscious state grading evaluation exponents are founded to guide the treatment of a patient and make prognosis.
Owner:ZHEJIANG UNIV
Sleep reminding method and sleep monitoring device
ActiveCN105997004AImprove sleep qualityThe judgment result is accurateDiagnostic recording/measuringSensorsSleep stateMedicine
The invention relates to a sleep reminding method and a sleep monitoring device. The sleep reminding method comprises the steps that a vibration signal generated when a user is in the bed is collected; preset age groups are acquired, and when the age group is the first age group, whether the user is in a waking state from a sleep stage or not is judged according to the vibration signal; if yes, first reminding information is sent to monitoring equipment, and a starting signal is sent to at least one intelligent household electrical appliance. According to the sleep reminding method and the sleep monitoring device, the sleep state of a child in the first age group can be monitored, when it is monitored that the unusual condition occurs in sleep, a monitor can be reminded in time, the related intelligent household electrical appliances are controlled to be started, therefore, the monitor can help or look after the child in time, and the sleep quality is improved.
Owner:MIDEA GRP CO LTD
Exoskeleton type upper limb rehabilitation robot with man-machine interaction kinetic model
ActiveCN105437209AReduce usageAvoid interferenceProgramme-controlled manipulatorChiropractic devicesHuman bodyThree degrees of freedom
The invention provides an exoskeleton type upper limb rehabilitation robot with a man-machine interaction kinetic model. In the rehabilitation training process, upper limbs of a human body are regarded as a two-connecting-rod mechanism with three freedom degrees, a kinetic model of the two-connecting-rod mechanism is combined with the kinetic model of the exoskeleton type upper limb rehabilitation robot, and the exoskeleton type upper limb rehabilitation robot with the man-machine interaction kinetic model is formed. The robot can judge the motion intention of a patient by comparing the joint force moment estimation value with the actually-measured force moment value. The exoskeleton type upper limb rehabilitation robot with the man-machine interaction kinetic model can accurately recognize the motion intention of the upper limbs of the patient in application of engineering, data are stable and reliable, recognition and judgment results are accurate, and the exoskeleton type upper limb rehabilitation robot has expectable great economic values and social values.
Owner:NORTHEASTERN UNIV
Audio similarity detecting method, audio similarity detecting device and electronic equipment
ActiveCN104133851AImprove user experienceThe judgment result is accurateSpeech analysisSpecial data processing applicationsFeature parameterElectronic equipment
The invention discloses an audio similarity detecting method, an audio similarity detecting device and electronic equipment. The detecting method comprises the following steps that: an audio stream to be detected is obtained; a feature parameter value of the audio stream to be detected is determined; a previously known feature parameter value of a reference audio stream corresponding to the audio stream to be detected is compared with the feature parameter value of the audio stream to be detected; and according to a comparison result, the similarity between the audio stream to be detected and the reference audio stream is calculated. According to the technical scheme disclosed by the invention, the feature parameter values between the audio streams are compared, so that the judgment of the similarity is more accurate and quantitative, and the use experience of users is favorably improved.
Owner:XIAOMI INC
Immunochromatography detection method
InactiveCN104204802ASuppresses non-specific reactionsReduce sensitivityMaterial analysisAnalyteArginine
The present invention provides an immunochromatography detection method whereby non-specific reactions can be minimized. The present invention relates to an immunochromatography detection method including: a step of adding an analyte diluted solution containing an analyte to a chromatography medium; a step of recognizing the detection target by a labeling substance which has been modified with gold nanoparticles, and which is retained in a dried state by a labeling substance retaining part; a step of developing a complex of the labeling substance and the detection target as the mobile phase; and a step of detecting the detection target in the developed mobile phase, by an assessment part, wherein the immunochromatography detection method is characterized in that the labeling substance is protected by polyalkylene glycol having one or more mercapto groups and / or a derivative thereof, and then retained in a dried state, together with arginine and casein, in the labeling substance retaining part.
Owner:TANAKA PRECIOUS METAL IND
Urban traffic jam distinguishing method based on RFID technology
ActiveCN103473928ALarge amount of informationReduce operational overheadDetection of traffic movementSimulationTraffic flow
The invention relates to the technical field of traffic information and provides an urban traffic jam distinguishing method based on an RFID technology. The urban traffic jam distinguishing method comprises the steps of reading data of RFID tags installed on passing automobiles through RFID readers arranged at urban intersections, and obtaining driving information; setting a statistics time interval as T, performing matching on the driving information obtained through two RFID readers, and obtaining the number of automobiles passing through a road segment between the two RFID readers within the T time period and the driving information; performing data preprocessing to remove abnormal data; calculating the stroke speed and the average stroke speed of every automobile; obtaining a traffic flow state characteristic value; and distinguishing traffic jams according to the traffic flow state characteristic value D. Compared with other jam distinguishing methods, the urban traffic jam distinguishing method is simple in algorithm, small in operation spending, quick in operating speed and low in achieving difficulty, and more accurate judgment results can be obtained.
Owner:重庆科知源科技有限公司
Detection method and system for target domain name hijacking
InactiveCN107135236AThe judgment result is accurateThe analysis result is accurateTransmissionClient-sideServer-side
The invention provides a detection method and system for target domain name hijacking. The method comprises the steps that a server side adopts a mode of sending a domain name analysis request to an authority DNS server of the target domain name and receiving at least one analysis result of the target domain name returned by the authority DNS server to establish a standard analysis result list; the server side allocates the domain name to multiple specific client sides to execute a target domain name analysis probing task, and each client side sends the received target domain name to an LDNS server configured for the client side to request domain name analysis and reports the received analysis result to the server side; the server compares each received analysis result which is adopted as a probing task with a standard analysis result recorded by the standard analysis result list, and therefore whether a hijacking behavior exists in the LDNS server configured for the server side or not is determined.
Owner:ALIBABA (CHINA) CO LTD
Vehicle management method, system and server
ActiveCN109743467ASolve the problem of moving the carGuaranteed not to leakSpecial service for subscribersCo-operative working arrangementsContact methodComputer terminal
The invention relates to the technical field of parking management, in particular to a vehicle management method and system and a server. The method comprises the following steps: receiving a vehiclemoving request sent by a first terminal through scanning an identification code on a target vehicle, wherein the vehicle moving request comprises a license plate number of the target vehicle; Determining a second terminal corresponding to the license plate number according to a corresponding relation between the license plate number and pre-stored vehicle owner contact information and license plate number information; And sending a vehicle moving prompt message to the second terminal to prompt a user of the target vehicle to move the vehicle. when receiving a vehicle moving request which is sent by a first terminal through scanning an identification code on a target vehicle and comprises a license plate number of the target vehicle; a second terminal corresponding to the license plate number is determined according to the license plate number and the corresponding relation between the pre-stored owner contact information and the license plate number information, and a prompt message for prompting the user of the target vehicle is sent to move the vehicle to the second terminal, so that the vehicle moving problem can be effectively solved under the condition that the privacy information of the owner is not leaked.
Owner:北京筑梦园科技有限公司
Congestion identification method and device
ActiveCN109147330AThe judgment result is accurateImprove reliabilityData processing applicationsDetection of traffic movementVehicle drivingReal-time computing
The invention provides a congestion identification method and device. The congestion identification method comprises the steps: acquiring the vehicle driving data, wherein the vehicle driving data indicates the vehicle traveling time of each vehicle passing through any one of at least one road segment to be identified within the preset statistical period, and the preset statistical period includesat least one day; determining the road state of each of at least one road segment to be identified in each day of the preset statistical period according to the vehicle driving data; determining theroad segment to be identified of which the road state is congested for more than the preset number of days in at least one road segment to be identified as the frequent congestion road segment and obtaining H frequent congestion road segments, wherein H is an integer greater than 1; and determining at least one frequent congestion trunk according to the H frequent congestion road segments.
Owner:QINGDAO HISENSE TRANS TECH
Method for detecting steel tube void of concrete filled steel tube (CFST) arch bridge by utilizing transient impact method
InactiveCN102175771AThe judgment result is accurate and reliableEasy to operateAnalysing solids using sonic/ultrasonic/infrasonic wavesUltrasonic/sonic/infrasonic wave generationSignal amplifierSteel tube
The invention provides a method for detecting steel tube void of concrete filled steel tube (CFST) arch bridge by utilizing a transient impact method; the method provided by the invention is characterized by comprising the following steps: 1, arranging measuring points, axially arranging a plurality of measuring points at the outer wall of a steel tube which is made of a CFST and is to be detected, and placing an acceleration transducer on each measuring point; 2, arranging a vibration excitation point at the outer wall near to the head end or tail end of the steel tube, horizontally knockingthe vibration excitation point by a vibration excitation device, and detecting the acceleration response signals of the measuring points by the acceleration transducer; 3, outputting the response signals of the measuring points by the acceleration transducer, inputting the signals into a data collector by a signal amplifier, obtaining the natural frequency and acceleration power spectral density of each measuring point by the data collector, and storing in a computer. In the invention, the steel tube void of the CFST arch bridge can be located fast and exactly according to the natural frequency and power spectral density of acceleration response and via calculating and comparing the acceleration spectral energy values of the measuring points based on an expression.
Owner:CHONGQING ACADEMY OF SCI & TECH +1
Method for detecting human motion state based on accelerated speed changes
ActiveCN103340634AThe judgment result is accurateCalculation method is simpleDiagnostic recording/measuringSensorsHuman bodySelf correlation
The invention discloses a method for detecting a human motion state based on accelerated speed changes. The method includes the following steps that A, a mobile device where an accelerated speed sensor is embedded is placed at any position of a human body, an accelerated speed sampling value of the accelerated speed sensor is compared with a preset accelerated speed threshold value, and according to the compared result, whether a human moves or not is judged; B, according to the step A, if the human moves, a self-correlation function is used for calculating the self-correlation degree of the accelerated speed sampling value; C, the self-correlation degree is compared with a preset self-correlation threshold value, and according to the compared result, whether the human walks or not is judged. According to changes of the accelerated speed value, whether the human walks or not can be judged. Therefore, the method not only is simple and accurate in judgment result, but also has very great practical significance and polarization value.
Owner:无锡市中安捷联科技有限公司
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