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176results about How to "Strong real-time" patented technology

Test platform of driver active safety early warning system

The invention relates to a test platform of a driver active safety early warning system. The test platform comprises a data acquisition unit, a test working condition database, an offline analysis unit and an analysis report unit, wherein the offline analysis unit comprises an offline analysis playback sub-unit and an offline analysis judging sub-unit; the data acquisition unit acquires road environment video information and vehicle state information at different moments in the running process of an experimental vehicle in real time, and sends all of the information and stores in the test working condition database; the offline analysis playback sub-unit extracts a sample and sends the sample to a system to be tested; the system to be tested generates an early warning system in a simulation environment; the offline analysis playback sub-unit sends the early warning signal and the sample corresponding to the early warning signal to the offline analysis judging sub-unit; the offline analysis judging sub-unit analyzes the road environment video information, the vehicle state information and the early warning signal and judges to generate a judgment result, and sends the judgment result to the analysis report unit; and the analysis report unit generates lines and a document. The test platform provided by the invention can be widely applied to the test of various automobile alarm systems.
Owner:北京智华驭新汽车电子技术开发有限公司

Land subsidence monitoring and early warning system based on global position system (GPS) and hydrostatic leveling

The invention discloses a land subsidence monitoring and early warning system based on global position system (GPS) and hydrostatic leveling and belongs to the field of geological disaster monitoring and early warning. The system comprises a monitoring station, a base station and a monitoring and early warning center which are distributed, wherein a GPS receiver in the monitoring station and a datum point in a hydrostatic leveling system are mounted on a same observation pillar; the GPS receiver transmits received satellite observation data to the monitoring and early warning center; a data acquisition unit acquires monitoring data of a hydrostatic leveling instrument and transmits the data to the monitoring and early warning center; the GPS receiver in the base station receives the satellite observation data of a stable area point of the base station and transmits the data to the monitoring and early warning center; and the monitoring and early warning center receives the information transmitted by the monitoring station and the base station and processes and analyzes the data. According to the system, the problem that the monitoring point subsidence amount is inaccurate in measurement after a stable datum point is unavailable or the datum point is subsided in a measuring process of the hydrostatic leveling system can be solved, and a high-precision land subsidence value is acquired in real time.
Owner:CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI

Method of real-time simulation on SAR (synthetic aperture radar) echo

ActiveCN103176179AStrong real-timeLow latency and strongWave based measurement systemsHigh performance computationPhysics
The invention provides a method of real-time simulation on SAR (synthetic aperture radar) echo. The method includes the steps of acquiring coordinates of radar and coordinates of obstacle scattering points during a pulse repetition period; calculating the distances between the radar and the scattering points according to the radar coordinates and the scattering point coordinates; calculating retardation values, phase values and amplitude values according to the distances; acquiring impulse response of each scattering point according to the retardation values, the phase values and the amplitude valves calculated according to the distances; and acquiring a response function according to the impulse response of each scattering point and convolving the response function to obtain an echo signal. Echo signals of a body target or area target are provided for the SAR in a closed-loop simulation system by high-performance computing power of an FPGA (field programmable gate array) hardware platform according to the pulse repetition period and echo retardation of the radar in actual operation. In addition, hard timeliness and low latency are achieved through a high-parallelism computing architecture, each computing unit uses a programmable serial mode internally, and accordingly flexibility is improved.
Owner:TSINGHUA UNIV

Dynamic track based spectrum resource allocation method for UAV (unmanned aerial vehicle) groups

The invention provides a dynamic track based spectrum resource allocation method for UAV (unmanned aerial vehicle) groups. N UAV groups reconnoiter a specific mission area according to given tracks and perform intra-group communication in real time, and the purpose of maximization of network communication utility is achieved by reasonable allocation of spectrum of the UAV groups. The method comprises the following steps: a real-time spectrum allocation problem of the UAV groups based on interference cancellation is modeled into a potential energy game model, wherein game participants are the NUAV groups participating in the reconnaissance mission; an action set of each of the UAV groups is defined as a selectable spectrum resource, and other UAV groups are divided into neighboring UAV groups and non-neighboring UAV groups according to the distance between the other UAV groups and the UAV group, network utility and communication utility of the UAV groups are obtained, and a utility function of the UAV groups is further defined; and potential energy game is computed by a channel maintenance based parallel optimal response algorithm, so that the UAV groups access the optimal channelfor intra-group communication.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Orthogonal double grating based synchronous phase shifting common-path interference microscopy detection device and detection method

The invention discloses an orthogonal double grating based synchronous phase shifting common-path interference microscopy detection device and a detection method, and belongs to the technical field of optical interfering detection. The invention solves problems of complexity in processing process of detection data and low measurement accuracy in existing synchronous phase shifting interference microscopy detection methods. The method integrates the interfering microscopy technology with the orthogonal double grating common-path synchronous phase shifting technology, linear polarization parallel light after collimation and beam expansion is divided into object light and reference light by a first polarized beam splitter prism and a second polarized beam splitter prism to be ultimately converged at a rectangular window side-by-side, a computer obtains an interference figure containing four patterns by collection, and phase distribution of an object to be detected is obtained by calculating according to strength distribution of the four interference patterns. The orthogonal double grating based synchronous phase shifting common-path interference microscopy detection device and the detection method are suitable for measurement of three-dimensional shape and phase distribution of micro-objects.
Owner:HARBIN ENG UNIV

Method and system for collecting and storing stock data based on cloud computing technology

The invention discloses a method for collecting and storing stock data based on a cloud computing technology. The method comprises the following steps: obtaining a plurality of stock codes; generating a corresponding URL (uniform resource locator) list file for each stock code; setting fragment size of a Hadoop distributed file system of a cloud computing platform; storing the URL list file into the Hadoop distributed file system; receiving a stock data collecting request submitted by a user; resolving the stock data collecting request into corresponding quantity of Map tasks according to the quantity of the file fragments; assigning the resolved Map tasks to a slave server on which corresponding fragments are located to carry out; transmitting an Http (hyper text transport protocol) data request to a remote stock data server from a server according to the resolved Map tasks; returning the stock data by the remote stock data server; and analyzing the stock data according to the resolved Map tasks, wherein compiling of analysis function program abides by structure description of a remote stock server on the stock data. The method is simple to develop and good in data structure expansibility, and rapid collection of the stock data can be achieved.
Owner:武汉民大信息科技有限公司

Method for detecting operation troubles of mine hoist

The invention relates to a method for detecting operation troubles of a mine hoist. The method comprises the following steps of: axially arranging a wireless stress sensor on a hoisting sheave shaft or a guide wheel shaft, wherein the wireless stress sensor is used for acquiring a stress-strain signal on the shaft and transmitting the stress-strain signal to an industrial personal computer through a wireless signal receiving device; identifying peaks and troughs of the stress-strain signal to acquire a real-time hoisting speed curve and a hoisting container depth curve by a mine hoist operation trouble detection module in the industrial personal computer, simultaneously converting the stress-strain signal according to a corresponding relationship between the stress-strain signal and a hoisting load to acquire a real-time hoisting load curve; and judging whether phenomena such as over-winding, over-unwinding, slipping, cage clamping, rope releasing, overloading and the like exist or not by combining the hoisting speed curve given by the hoist, rated load and the reading of a depth indicating meter on the basis of the acquired three real-time curves. The method has the advantages ofsimple required hardware equipment, high reliability, high anti-interference performance, high real time property and capacity of detecting various troubles simultaneously.
Owner:CHINA UNIV OF MINING & TECH

Medical and industrial X-ray real-time stereoscopic imaging device

The invention relates to a medical and industrial X-ray real-time stereoscopic imaging device, and belongs to the technical field of ray imaging equipment. The device comprises an X-ray source, an X-ray image sensor, a computer, a stereoscopic display and an X-ray machine stand, wherein the X-ray source has double viewing angles and can rapidly alternately emits X rays of double viewing angles; the X-ray image sensor is used for receiving X-ray images and realizing digitization; the computer can synchronously acquire images of left and right eyes and perform stereoscopic processing; the stereoscopic display is used for observing stereoscopic images; and the X-ray machine stand makes the X-ray source and the X-ray image sensor move or rotate in certain distance. The imaging device can display a three-dimensional perspective image of a human body or an object in real time during operation and perform three-dimensional positioning on organs and surgical instruments through a three-dimensional coordinate and a three-dimensional mouse, and also can display an X-ray three-dimensional image and the three-dimensional positioning of inner components of a tested object in real time in nondestructive testing or explosion-proof security. The imaging device has the advantages of high real-time, low cost and low exposure dose.
Owner:北京睿思厚德辐射信息科技有限公司 +1

Monitoring method and system of burning object

The invention provides a monitoring method and system of a burning object. The method includes: acquiring image information of each image acquisition point in a monitoring area; performing image processing on the image information to obtain a two-dimensional coordinate of an ignition source in an image; and obtaining a three-dimensional coordinate of the ignition point through space positioning according to the two-dimensional coordinate of the ignition point and space coordinates of the acquisition points. According to the method and system, accurate segmentation and positioning of waste burning in a non-structural environment can be realized; the method and system can be combined with the conventional monitoring system, and the space three-dimensional coordinate of a target object is obtained through conversion of the space coordinate of a set monocular camera and the coordinate of the ignition point in the acquired image information; besides, the timeliness is high, the positioningof a target point is accurate, illegal images can be captured in real time, accurate positioning of the space positions of illegal burning points can be realized, law enforcement evidences are provided for law enforcement, related departments can perform real-time monitoring and accurate law enforcement, and the improvement of the quality of the atmospheric environment is facilitated.
Owner:重庆广睿达科技有限公司
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