42results about How to "Simplify the data collection process" patented technology

A method of testing a digital mobile phone network such as a GPRS or 3G network comprises either using real traffic or creating test traffic using test mobile phone coupled to a computer, and using the computer to measure a parameter associated with the network's response to the traffic. The measurements made by the computer are themselves sent as traffic to create one or more data streams within the mobile phone network comprising the traffic, measurements relating to the traffic, and signalling relating to the traffic, whereby this data stream or these streams can be captured at interface points within the network and analyzed to investigate the functioning of the network dynamically as the network is exercised with the traffic. Software and test equipment for performing the method are also described.

The invention discloses a human action classification method based on fusion features, which includes inputting a plurality of labeled human action videos, converting each action video into a frame sequence; using a pre-trained hourglass human body pose estimation model to predict the human body joints of each frame Point 3D coordinates to obtain the 3D coordinate data set of joint points; project the coordinates of human joint points to a three-dimensional plane; use LSTM and GRU models to extract features from the projected data, and fuse the extracted two sets of feature vectors; The fused features train the human action video classification model, input the video data into the trained human action video classification model, and obtain the human action video classification result. The method of the invention can mine the overall features of human actions through feature fusion, enhance the model's ability to distinguish features, and classify actions with small differences between classes more accurately.

The invention discloses a test spectrum clipping method achieving monaxial and triaxial random vibration stress equivalence, and the problem that an existing test spectrum determination technique is complex in processing process is mainly solved. The test spectrum clipping method comprises the implementation steps that 1, a maximum Fann equivalent stress value sigmamax, generated when single axes are sequentially loaded with a homotaxial vibration acceleration test spectrum, of a focused point n on a vibration system and a Fann equivalent stress value sigmaxyz, generated when the three axes are simultaneously loaded, of the focused point n are extracted, and the ratio a of sigmamax to sigmaxyz is calculated through a formula a=sigmamax / sigmaxyz; 2, the horizontal coordinate of the monaxial vibration acceleration test spectrum keeps invariable, the corresponding vertical coordinate is reduced by a<2> times of a, and then a clipped vibration acceleration test spectrum is obtained. The test spectrum clipping method can achieve the effect that the Fann equivalent stress value, generated during triaxial vibration, of the focused point n can be made to be equal to the maximum Fann equivalent stress value generated during monaxial sequential vibration, is a simple and convenient method for determining a triaxial vibration test spectrum and can be used for building a triaxial vibration test standard.

The invention discloses an imaging method of a hard X-ray grating interferometer with single exposure. The imaging method is characterized by including the steps of 1, moving any grating, and fixing a working point of the hard X-ray grating interferometer at a left half waist and right half waist position of a light intensity curve; 2, obtaining a background projection image and a projection image of an imaged object respectively; 3, obtaining the normalized projection image of the imaged object, and conducting logarithm process on the normalized projection image; 4, constructing an expression formula to conduct one-dimensional Fourier transform according to the logarithm process result; 5, utilizing one-dimensional inverse Fourier transform to extract absorption of the imaged object and a relative phase shift signal respectively according to the result of the Fourier transform. According to the imaging method of the hard X-ray grating interferometer with the single exposure, the data collection procedure of the hard X-ray grating interferometer is simplified, the imaged object is subjected to single exposure, the imaging efficiency is improved, the radiation damage risk is reduced, and thus a new path of the development of a future fast and low-radiation-dose clinical medical imaging technology is provided.

The invention discloses a lens antenna based on the 3D printing technology. The lens antenna comprises a hyperbolic lens, a support body and a feed source array. The support body and the hyperbolic lens are made of liquid resin by using the stereoscopic light curing molding 3D printing technology, the feed source array is integrally formed by metal powder by using the selective laser melting 3D printing technology, the feed source array is formed by combining a plurality of feed resources in an orthogonal form, and each of the multiple feed resources comprises a square flange, a rectangle to circle waveguide and a round table. According to the lens antenna based on the 3D printing technology of the invention, a feed source form of a multi-beam two-dimensional plane array is achieved whilethe gains of an E plane and an H plane of the lens antenna are ensured, the processes of hydrological data collection and state monitoring is simplified when the antenna is applied to the hydrologicalfield, and the choices of antennas in the hydrological field are enriched.

The invention discloses an iterative algorithm-based X-ray diffraction enhanced imaging method, which is applied to a diffraction enhanced imaging system composed of an X-ray source, a monochromatic crystal, an analysis crystal and a detector arranged in sequence along the X-ray propagation direction , X-rays incident on the surface of the monochromatic crystal are diffracted, and the outgoing monochromatic collimated X-rays are diffracted after penetrating the object to be imaged and incident on the surface of the analysis crystal. After the outgoing X-rays are incident on the detector, the intensity of the X-rays is determined The detector detects and records, taking the normal of the diffraction surface of the analysis crystal as the rotation axis, and using the detector to record and analyze the projection data of the analysis crystal at three different angular positions, so that the proposed iterative algorithm is used to process the projection data recorded by the detector, Obtain the absorption, refraction and scattering signals of the imaged object. The invention can solve the problem of accurate extraction of the refraction signal and scattering signal of the imaged object when the offset of the light intensity curve is not zero.

The present invention claims to protect a method for extracting and classifying EEG signal features combined with a noise reduction automatic encoding machine and a convolutional neural network. The method includes the steps of: collecting EEG data through an EEG signal acquisition instrument; removing the collected data Preprocessing such as abnormal samples, de-meaning, signal filtering, etc.; use the automatic encoding machine with noise coefficient to train the EEG signal; output the hidden layer of the noise reduction automatic encoding machine as feature data; and then convert the obtained feature data into similar Image format; use convolutional neural network for classification; finally use the test data set to test the performance of the trained network. Compared with other traditional methods, the present invention can obtain higher classification accuracy and stronger robustness.

The invention relates to the technical field of vehicles, and discloses a vehicle climbing test method and a test system. The test method includes: S1, preparation steps for the test environment and the test vehicle before the test; S2, pre-testing the test vehicle and the chassis dynamometer. Hot step; S3, carry out road sliding test to the test vehicle, and record the operating data in the test process; S4, carry out data analysis and comparison according to the data recorded in step S3, and judge whether the climbing performance of the vehicle meets the design Require. The invention adopts the chassis dynamometer to simulate the actual track to test the climbing performance of the vehicle, and collects the running data of the vehicle during the test. The data collection process is simple, convenient and fast, and the collected data has high precision. The test method is safe and can greatly reduce the test cost.

The present invention relates to a real-time imaged optical coherence endoscopic system. Said invention includes broad-band light source, optical fibre coupler, sample arm and reference arm, position detector and computer collecting and processing system, and said system structure is based on Michelson interferometer, the described reference arm adopts the scanning disk connected with motor, and said scanning disk is formed from central shaft and flabellum which is placed on the central shaft and whose at least one surface form is equidistant spiral surface. The sample arm adopts micro-type optical transmission and scanning device based on ultrasonic motor. Said invention is simple in structure and can provide scanning range greater than 3 mm.