2010 results about "Blind zone" patented technology

The invention discloses a method for synthesizing annular video of 360 degrees for assistant drive of a vehicle. The method adopts a video acquisition unit, an annular video synthesis unit and a display control and storage unit, and has the characteristics of reliable stability, low cost and suitable batch production. The method can acquire video signals in real time for four super-wide-angle fish-eye cameras arranged at front, back, left and right of the vehicle, carries out treatment of fish-eye image correction, annular image mosaic and vision angle conversion on four channels of the video signals through a video decoding unit and a video synthesizing control unit to generate a panoramic displayed plan view of 360 degrees, achieves multiple display modes through the display control and storage unit, and can selectively store correlated video information. The method can provide surrounding scenes for a driver, and eliminate vision blind area thereof, and is favorable for the driver to achieve safe and accurate vehicle driving operations. The method is used for assistant drive for sedans, business vehicles and heavy trucks of various grades, and passenger coaches of different types.

A composite mirror adapted for use as an outside rearview mirror of a motor vehicle includes a main or primary viewing mirror and an auxiliary blindzone viewing mirror juxtaposed to expose the vehicle blindzone to the vehicle operator. The main viewing mirror is generally of unit magnification. The auxiliary mirror is composed of a planar array of reflecting facets mimicking a convex mirror. The main and auxiliary mirrors can be combined in constant or variable reflectivity applications.

To monitor both the surrounding of a vehicle and a place distant therefrom, there is mounted on the vehicle a twin-camera (23) composed of cameras (23L, 23R) forming a pair. To properly set the postures of the cameras (23L, 23R), their tilts, pans and twists around the optical axes are adjusted using, as indexes, the lengths of the portions, as captured by the cameras (23L, 23R), of the vehicle center line (BCL), the lengths of the portions, as captured by the cameras (23L, 23R), of the vehicle rear-end line (BEL), and the areas of the blind zones (S) in the capturing directions.

A vision system for a vehicle includes an exterior structure mounted at an exterior portion of a body side of the equipped vehicle, with an imaging sensor disposed at the exterior structure and having a field of view exterior and sideward and rearward of the vehicle. A video display screen is disposed in an interior cabin of the equipped vehicle and operable to display video images. Responsive to detection of another vehicle at or near the side of the equipped vehicle, said video display screen displays a graphic overlay at the display screen. The graphic overlay includes a semitransparent overlay having a longitudinally extending line segment that extends along a displayed body side portion of the equipped vehicle and a plurality of laterally extending line segments that extend laterally outwardly from the longitudinally extending line segment at spaced apart intervals along the longitudinally extending line segment.

An air gap retractor illumination system includes any suitable retractor such as a McCulloch with a channel in the blade to accommodate an air gap illuminator. The illuminator is preferably made from a suitable light conducting plastic material such as acrylic or polycarbonate or silicone. The illuminator has active portions in which light passes and inactive or dead zones in which light does not pass as a result of the configuration and orientation of the input, output and surfaces of the illuminator. The illuminator is formed to have an air gap surrounding any active portion of the illuminator extending from the light input to the light output portion. The dead zones may include elements to allow the illuminator to securely engage the retractor. The light output portion of the illuminator contains from two to eight output zones, each zone having specially designed output optical structures that control and direct light to escape the illuminator to shine onto a predetermined area of interest or to form one or more predetermined shapes or footprints.

The invention discloses a navigation information acquisition method and an intelligent space system with multiple mobile robots. The intelligent space system comprises a distributed vision system and a Zigbee technology based wireless sensor network system. The method includes: carrying out image stitching based on a maximum gradient similar curve and an affine transformation model, and then carrying out image segmentation based on Otsu threshold segmentation and the mathematical morphology so that an environmental map is obtained. The mobile robots in navigation are positioned mainly by means of visual positioning, and Zigbee and DR (dead reckoning) combined positioning are used for making up visual blind zones in visual positioning supplementarily. The visual positioning refers to that positioning is realized by processing images including robot positions and direction signs mainly based on an HIS color model and the mathematical morphology. Combined positioning refers to that information fusion positioning of Zigbee and DR is achieved by the aid of a federal Kalman filter.

An alert system for a vehicle includes a sensor and a control. The sensor is disposed at a side portion of a vehicle and has at least a generally sidewardly and rearwardly sensing direction. The control is operable to process an output of the sensor to determine if an object of interest is present in the sensing region at or near the side of the vehicle. Responsive to at least one of (i) the vehicle being stopped, (ii) the vehicle transmission being shifted into park and (iii) the vehicle ignition being turned off, the control is operable to process the sensor output to detect an object at or near the side of the vehicle or approaching the vehicle along the side of the vehicle, and, responsive to detection of such an object, the alert system generates an alert to an occupant of the vehicle.

The invention belongs to the technical field of vehicle-mounted systems and automobile electronics, and relates to a pedestrian and vehicle detecting method and system based on multi-vehicle cooperation. The method comprises the steps that a vehicle-mounted sensor collects the state data of traveling vehicles, and a vehicle-mounted camera is guided to collect images; time stamps, corresponding traveling state data and current GPS data are added to the collected images, and a vehicle-mounted self-organization network is used for broadcasting the images to vehicles on the adjacent network nodes; an image processing module processes local data and the received data to synthesize a panoramic image and carries out pedestrian detection to generate an early-warning prompt instruction; an early-warning prompt module prompts drivers to avoid dangers which possibly appear in a sound and displayer display mode after receiving the instruction of the image processing module. According to the pedestrian and vehicle detecting method and system, the multi-vehicle cooperation way is provided for the first time, view blind zones existing during driving are eliminated for users by means of the different position advantages of different vehicles, and driving safety is improved.

A device and method are provided for treating the visual system of a human including the retina, visual cortex and/or other neuro-cellular structures. The method includes the steps of locating and defining a blind zone of deteriorated vision within the human's visual system, defining a treatment area which is located predominantly within the blind zone, and treating the human's visual system by presenting visual stimuli to the human's visual system. The majority of the visual stimuli are presented to at least a portion of the blind zone.

A method of monitoring a blind spot of a monitoring vehicle by using a blind spot monitor. The method includes steps of: the blind spot monitor (a) acquiring a feature map from rear video images, on condition that video images with reference vehicles in the blind spot are acquired, reference boxes for the reference vehicles are created, and the reference boxes are set as proposal boxes; (b) acquiring feature vectors for the proposal boxes on the feature map by pooling, inputting the feature vectors into a fully connected layer, acquiring classification and regression information; and (c) selecting proposal boxes by referring to the classification information, acquiring bounding boxes for the proposal boxes by using the regression information, confirming whether the bounding boxes match their corresponding proposal boxes, and determining whether the monitored vehicle is in the proposal boxes to determine the monitored vehicle is in the blind spot.

The disclosed embodiments include an apparatus and method of using a laser to scan the ground or a target from an airborne or ground-based platform. In certain embodiments, the apparatus and method produces a 3-D elevation model of the terrain. In some embodiments, the apparatus includes a pulsed laser, a receiver to detect and amplify the pulse after being reflected by objects on the ground (or the ground itself), and electronics which measures the time of flight of the optical pulse from which the slant range to the target is calculated. Technical advantages of the disclosed embodiments include avoiding blind zones to ensure that no laser shots are wasted. In certain embodiments for airborne applications, the apparatus may also be configured to maintain a constant swath width or constant spot spacing independent of aircraft altitude or ground terrain elevation.

The invention provides a vehicular virtual panoramic electronic system, mainly comprising a special pick-up head A installed in a distribution type, a central processing unit B and a display and human-machine interface C, wherein the core of the system is the central processing unit including a video collection unit D, a video quiver prevention unit E, a video synthesis unit F, a projection and mapping unit G, a target detection unit H and a GIS unit I. The invention implements the seamless splicing to the video image collected by the special pick-up head A installed in a distribution type based on the ground by the video synthesis unit F, thus achieving a single real time panoramic video which can cover the whole range around the vehicle body without a blind zone and is converted into various effects to be displayed on the display and human-machine interface C by the projection and mapping unit G. Meanwhile, the target detection unit H can actively identify the periphery vehicles and travelers. The map information of the GIS unit I can be displayed in a way that is overlapped with the real time video, thereby providing an all-directional virtual panoramic real time video, and the integrated obstruction prewarning and navigation information for the vehicle drive operating staff.

The present invention discloses a digital storage oscillograph which has a very high waveshape catching rate. A test signal is inputted and is transmitted to an ADC converting module for sampling after regulation, and is transmitted to a caching of a collecting memorizer under the controlling of triggering and time-base circuit. When a one-time waveform collection is completed, a parallel coprocessor collects data and maps to a waveshape lattice data corresponding with the lattice of the display screen, and starts a new round of collection and mapping when the mapping is completed. At the same time, a microprocessor executes the management operation, and when a timing refreshing time of the display screen is obtained, a display refreshing control logic is instantaneously activated for automatically combining the waveshape lattice data with lattice data in the display memorizer and updating the display of the display screen. The invention adopts a framework that a signal waveform collecting procession and the micro-processor operate parallelly to free the micro-process from the burdensome waveshape processing and display. The time of blind zone is reduced and the catching rate of waveshape is increased. The probability for discovering the transient abnormal signal and the test efficiency are increased.

The embodiment of the invention discloses a data transmission method. The method comprises the following steps: acquiring collected audio-video data, and performing coding compression on the audio-video data; performing segmenting packetization on the audio-video data subjected to coding compression according to a preset segmenting packetization strategy; allocating data packets to communication links, respectively corresponding to a plurality of configured wireless communication modules, for transmission, wherein at least two communication links corresponding to thewireless communication modules adopt different mobile telecommunication networks for communication; and acquiring network bandwidth information of each communication link in real time, adjusting allocation of the data packets in real time and/or adjusting coding parameters for coding the audio-video data in real time to adjust the code rate of the audio-video data subjected to coding compression. Through adoption of the method, a problem of live broadcast lag phase or failure caused by the fact that the possibility of communication blind zones and poor signals is high when the mobile telecommunication networks are used for audio-video live broadcasting in the prior art is solved, and urgent needs of outdoor live broadcasting and mobile live broadcasting operations are met.

The invention discloses a method for ranging deep learning obstacle based on binocular vision. Firstly, the binocular camera is calibrated to obtain the camera model parameters and the geometric positional relationship between the first camera and the second camera. Then the deep learning-based faster-RCNN network is used to determine the region where the detection target is located. The three-dimensional coordinates and distance of the target in space can be determined by knowing the coordinates of the target on the image and the relative position thereof between the binocular cameras. This method can realize obstacle detection and distance measurement in the visual blind zone behind the vehicle during the vehicle reversing process. It is only necessary to install the binocular camera model on the vehicle body, and detect the distance between the obstacle and the vehicle in the environment through the deep learning target detection algorithm and the camera model. The method for ranging deep learning obstacle based on binocular vision is fast, effective and easy to install. The needs of real-time detection of blind zones in vehicles can be met, so as to pre-alarm drivers to ensurethe life and property safety of drivers.

The invention discloses an ultrasonic ranging method, belonging to the technical field of electronic measurements. The ultrasonic ranging method comprises the following steps that: an ultrasonic transmitter and a pulse laser are located at a transmitting end, the transmitting end receives a measuring command, subsequently, the pulse laser triggers a beam of pulse laser and the ultrasonic transmitter triggers an ultrasonic wave at the same time, and phase locking is carried out on the triggered ultrasonic wave and an external clock source; an ultrasonic receiver and a photodiode are located at a receiving end, after the photodiode receives the pulse laser, a timer is started, after the ultrasonic receiver acquires the received ultrasonic wave, the timer is stopped to acquire transition time; the transition time multiplies by a revised sound velocity to acquire a rough measurement value of a measured distance; and a phase difference is obtained, a fine measurement part is lambda delta omega/2phi, and an actually measured distance d' is acquired, wherein d'=Nlambda+lambda delta omega/2phi. The ultrasonic ranging method has the advantages that the receiver is easily interfered by the transmitter, a measurement blind zone is greatly reduced, the ultrasonic distance measuring directivity is improved, the distance measuring precision is improved within one ultrasonic wavelength; and the ultrasonic ranging method is particularly suitable for distance measurement in a single station type space orientation and measurement system.

The invention belongs to a track parameter detection technology, and in particular relates to a method for efficiently measuring three-dimensional coordinates of a track based on a track precise control net, which comprises the steps of: setting a measuring interval on a track line, setting control pile points of the precise control net at two sides of the track line, installing an intelligent track detection vehicle and a track satellite vehicle on the track, wherein an operation frame of the intelligent track detection vehicle is provided with an automatic leveling platform and a total-station type electronic distance measuring device, and the track satellite vehicle is provided with a measuring prism; in each measuring interval, collimating the control pile points of the precise control net arranged at two sides of the track line by using an automatic collimating function of the total-station type electronic distance measuring device, statically intersecting and measuring three-dimensional coordinates of a measuring point of the total-station type electronic distance measuring device and coordinates of a starting point and an ending point of the track satellite vehicle in the measuring interval; and between the coordinates of the starting point and the ending point of the track satellite vehicle, tracking and measuring the track satellite vehicle by using the total-station type electronic distance measuring device and dynamically tracking the three-dimensional coordinates of the track line. The invention realizes measuring point option, eliminates a track control blind region, and has high operation efficiency by adopting a static intersection and dynamic tracking and measuring manner.

The invention relates to an automotive safety system, in particular to an omni-directional automotive active safety system with an integrated five-channel video detection function. The omni-directional automotive active safety system comprises a sensing subsystem, an analysis and decision subsystem and an early warning subsystem; the sensing subsystem comprises a video acquisition module, a body information acquisition module and a system setting input module; the analysis and decision subsystem comprises a lane departure module, a front automobile detection module, a pedestrian detection module, a blind zone detection module, a rear automobile detection module and a driver monitoring module; and the early warning subsystem comprises a video early warning unit and an audible alarm unit. The omni-directional automotive active safety system has the advantages that a lane departure condition of an automobile with the omni-directional automotive active safety system, distances from the automobile to automobiles in front of the automobile, distances from the automobile to pedestrians, a blind zone condition, distances from the automobile to automobiles at the rear of the automobile and a driving state of a driver are monitored in real time by realizing the integrated five-channel video detection function for the automobile, the driver is timely reminded when risks are sensed, and shortcomings of a simple single-channel video function and incomprehensive detection environments are overcome.

An optical touch device includes a light guide module including a first light guide component, a second light guide component, a third light guide component and a fourth light guide component, a light source module including a first light emitting component and a second light emitting component for emitting light alternately and an image detecting module disposed between two neighboring ends of the first light guide component and the second light guide component. The third light guide component and the fourth light guide component are mirror light guide components. A field of view of the image detecting module covers the third light guide component and the fourth light guide component. The optical touch device can avoid a blind zone and can be used as a dual-touch device or a multi-touch device. A locating method and a linear source module are also provided.

The invention provides a radio passive optical network accessed by converging of broadband wireless and optical transmission. The invention comprises an optical line terminal, an optical network unit and an optical distribution network. The optical line terminal and the optical network unit are connected through the optical distribution network. The optical line terminal is installed with a wireless signal active modulating module and demodulating module, and the optical network unit is installed with a bilateral antenna, a wireless signal passive modulating module and demodulating module. The technology combines the point to several point-to-multipoint transmission characteristic of the wireless and PON baseband service, solves the problems of blind zone of wireless access and low interference killing feature (relative to optical fiber).

The specification discloses a rapidly-opening hunting blind comprising a fabric enclosure including an opening and moveable side panels at least partially defined by a resilient framework. The moveable side panels at least partially define a closure for the opening. The hunting blind has a closed condition, wherein free ends of the side panels are releasably connected to at least partially define a tent-like closure for the opening, and an opened condition, wherein the side panels extend radially outwardly and expose the opening. The resilient framework is biased towards the opened condition of the hunting blind such that when, in the closed condition of the hunting blind, the connected free ends of the side panels are released, the side panels tend spontaneously away from each other towards their radially extending configuration.

The invention provides a danger auxiliary system of a lane changing blind zone, and belongs to the field of vehicle safety. The danger auxiliary system comprises a side front radar sensor, a side rear radar sensor, a central controller and a vehicle-mounted ECU execution unit, wherein the side front radar sensor is used for detecting vehicle side front road environment information and vehicle information and distance information from a vehicle side front road vehicles to a self-vehicle and transmitting the information to the central controller; the side rear radar sensor is used for detecting vehicle side rear road environment information and vehicle information and distance information from a vehicle side rear road vehicles to the self-vehicle and transmitting the information to the central controller; the central controller receives the transmission information and the self-vehicle information of the side front radar sensor and the side rear radar sensor, judging whether lane changing is dangerous or not and sending instructions to the relevant vehicle-mounted ECU execution unit; and the vehicle-mounted ECU execution unit receives instructions of a processing unit and executes the instructions. The danger auxiliary system of the lane changing blind zone can solve the problem that an existing blind spot monitoring system cannot avoid collision risk of crossing of vehicles or quick close vehicles in the blind zone due to the fact that the vehicles or quick close vehicles in the blind zone are not detected.