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371results about How to "Wide field of vision" patented technology

Millimeter-wave time-division linear frequency modulation multiple-target detection colliding-proof radar for car

The invention relates to the technical field of radio fix radars, in particular to a millimetre wave time-division linear frequency modulation multi-object detection automobile anti-collision radar. The radar of the invention adopts full phase parameter receiving/emitting benchmark signal and time-division and time-sequence asynchronous control to receive/emit a dual-purpose quasi-light integrated medium lens antenna array, and scans the objects possible to be collided on the warning road surfaces by DSP according to lane scanning wave beam; the road situation photographing combined with the vehicle speed and GPS data MCU to control time-division n-passage modulation frequency and waveform millimetre wave linear locking phase frequency modulation; emission is carried out sequentially by R/T2, a circulator, a wave beam switch and the antenna array; echo passes through the antenna array, the wave beam switch, the circulator, the R/T1, low noise high amplifier, subharmonic mixing, middle amplifier and a time-dividing circuit and multi-object signal corresponding matching filter wave and is processed and controlled by MCU at DSP; when a plurality of road barriers are encountered, the orientation, distance and relative speed are determined by DSP restriction virtual warning; three-dimensional images are displayed by a CRT; the closer the distance of the object is, the higher the resolution is; the object which is closest to the vehicle is recognised; sound and light alarm are carried out when the distance is less than safety distance; when the distance is near to the dangerous distance, the vehicle can intelligently avoid the barrier or reduce the speed or brake; the radar of the invention can make a choice according to the control reference road situation, the vehicle speed and the GPS data, thus obviously improving the driving safety of the vehicle.
Owner:阮树成

Multifunctional split underwater sightsee cruiser

InactiveCN101229842AAvoid unsafe factorsThere will be no negative consequences of over-limit sinkingUnderwater vesselsUnderwater equipmentAir cycleFlute
The invention discloses a multifunctional detachable yacht of diving and sightseeing. A lower part of the yacht on water is provided with a rise-and-fall underwater sightseeing cabin; both ends of the underwater sightseeing cabin are provided with air circulation tubes; the middle of the air circulation tubes are provided with a rise-and-fall elevator; the circumference of the underwater sightseeing cabin is provided with a meshy diving chamber which is integrated into a whole with the underwater sightseeing cabin via a rise-and-fall positioning rod; a center on the bottom of the yacht on water is provided with a flute; the underwater sightseeing cabin is hung on a yacht lifting device; when a preset limitation is reached, the underwater sightseeing cabin and the meshy diving chamber are reset synchronously inside the flute. The invention solves the complication of the underwater sightseeing facility and the uncertainty of the safety terminal technique and gets rid of the dependency on high required technical facilities. The simple and scientific structure design guarantees safety and is easy for management and control. The multifunctional detachable yacht of diving and sightseeing has the advantages of low manufacture and operating cost and safe and comfortable riding.
Owner:尤祖林

Vehicle license plate recognition-based multi-lane vehicle distance recognition method and device

The invention provides a vehicle license plate recognition-based multi-lane vehicle distance recognition method and a vehicle license plate recognition-based multi-lane vehicle distance recognition device and belongs to the intelligence assisted driving/vehicle-mounted information detecting field. According to the vehicle license plate recognition-based multi-lane vehicle distance recognition method and the vehicle license plate recognition-based multi-lane vehicle distance recognition device, a binocular camera is adopted to acquire the image information of a plurality of lanes ahead in real time; according to a characteristic that the RGB information of pixels on a vertical splicing line of a left image and a right image is consistent, and with the preset coordinate point of the installed device is used in a default manner, a multi-lane panoramic image is obtained. In an image recognition process, a plurality of classic digital image processing algorithms dominated by HOUGH transform are used to calibrate lane lines and license plates; and based on the positions of different license plates and the sizes of pixels in the panoramic image, and according to a similarity principle and a digital imaging principle, multi-lane horizontal and vertical vehicle distances are automatically calculated, and calculation results are displayed on a screen according to the settings of a user. The method and device can be applied to intelligent traffic fields such assisted safety lane changing, active collision avoidance and ACC adaptive cruise.
Owner:NORTH CHINA UNIVERSITY OF TECHNOLOGY

River water quality monitoring method based on high resolution remote sensing satellite

A river water quality monitoring method based on a high-resolution remote sensing satellite comprises the following steps: the high-resolution remote sensing satellite acquires a high-resolution remote sensing image a of a river to be monitored from a ground station, and transfers the digital topographic map of the region of the river to be monitored; a preprocessing module preprocesses the high-resolution remote sensing image a to obtain n high-resolution remote sensing images c of the image capable of displaying the complete river to be monitored at different wavebands; a controller performsregression analysis on the actual mass concentration of each reference position point and the reflectivity of each reference position on the high-resolution remote sensing images c to obtain a corresponding regression equation, and establishes a relationship function between the actual mass concentration of every reference position point and the reflectivity at every reference position on every high-resolution remote sensing image c based on the regression equation with a smallest dispersion degree; and the controller calculates the reflectivity of a monitoring point on each of the n high-resolution remote sensing images c, and calculates the water quality parameter mass concentration at the monitoring point according to the relationship function.
Owner:浙大正呈科技有限公司
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