52results about How to "Scan results are accurate" patented technology

The invention discloses an ultrasonic C scanning imaging method based on two-dimensional neighborhood synthetic aperture focusing, which includes five steps including performing visualization for an acoustic beam spread angle of a probe, building a mathematical model for a neighborhood of a focusing treatment point, collecting ultrasonic A wave signals, synthesizing focusing treatment ultrasonic A wave signals and performing ultrasonic C scanning imaging for a defect. The technical effect of the invention lies in that through focusing the two-dimensional neighborhood taking an objective pointas a center and simultaneously taking the wafer diameter, the near field length and the acoustic beam spread angle of the probe into consideration, the neighborhood of the synthetic aperture focusingtreatment point is confirmed, so that the scanning result is more accurate as compared with that of the conventional SAFT (synthetic aperture focusing technique) method, the adverse effects of the acoustic beam spread angle on the ultrasonic nondestructive detection can be effectively restrained, and the accuracy of the ultrasonic C scanning imaging is improved.

The invention relates to a tracking type three-dimensional scanning method and system in a vibration environment. The method comprises the following steps: tracking equipment obtains a reference light-reflecting point arranged on a scanner and the coordinates of a target light-reflecting point on a target object in a first coordinate system; the scanner scans the target object to obtain the coordinates of scanning points formed on the surface of the target object in a second coordinate system; and according to the coordinates of the reference light-reflecting point in the first coordinate system, the coordinates of the reference light-reflecting point in the second coordinate system, the coordinates of the target light-reflecting point in the first coordinate system and the coordinates ofthe scanning points in the second coordinate system, obtaining the coordinates of the scanning points in the third coordinate system, performing fusion of the scanning points, and after the scanning is finished, constructing the surface of the target object in the third coordinate system to generate a three-dimensional model of the target object. The method provided by the invention can prevent alarge number of mark points from being pasted on the surface of the object, realize high-precision, high-efficiency and convenient three-dimensional reconstruction in a vibration environment, and theworking space can be expanded.

The invention discloses an information processing method, a terminal and a server. The method comprises: a plurality of applications are operated according to a first preset rule; when the plurality of applications are detected to be in an operation state, a monitoring plug-in unit generated based on a first security framework is loaded; the monitoring plug-in unit is controlled to scan behavior information of the plurality of applications in the operation state to obtain dynamic scanning results; and according to a second preset rule, the dynamic scanning results are analyzed to obtain software security vulnerability information of the applications, and then the software security vulnerability information of the applications is reported to a server.

The invention discloses a steel plate full covering supersonic wave detection device, and a method. The steel plate full covering supersonic wave detection device comprises a mechanism capable of walking on a steel plate freely, a multichannel supersonic wave flaw detector, a plurality of probes which are connected with the multichannel supersonic wave flaw detector in corresponding connection andare arranged in linear arrays, a laser movable inductor, a coupling device, a host computer, and a power source; the axis of the probes is vertical to a steel plate plane to be detected; the multichannel supersonic wave flaw detector is used for controlling the probes to send / receive supersonic wave signals, performing analog-to-digital conversion, and sending signals to the host computer; the laser movable inductor is connected with the plurality of probes in linear arrays and the host computer respectively; the host computer is used for obtained real-time two-dimensional position signals from the laser movable inductor for subsequent defect signal analysis, processing, and positioning; the coupling device is used for supplying the probes in linear arrays with a couplant; the power supply is used for providing the multichannel supersonic wave flaw detector, the host computer, and the laser movable inductor with electricity. The advantages are that: detection transverse resolution isincreased, and rapid, accurate, and comprehensive detection of steel plate internal defects is realized based on the limit number of the probes of a conventional portable steel plate detection vehicle.