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201 results about "Severity level" patented technology

Method and system for providing warnings concerning an imminent vehicular collision

Method for transmitting a warning signal to a driver of a driven vehicle regarding an impending collision with a moving and / or stationary object in the vicinity of the driven vehicle. The method comprises the following steps of providing the driven vehicle with means for obtaining updated data regarding, position, velocity vector and predicted moving path of the objects; selecting a series of one or more time horizons having decreasing or increasing duration; for the longest of the selected time horizons: generating a linear velocity object (LVO) and / or non-linear velocity object (NLVO) of each of the objects; selecting a sampling time interval Δt, during which an LVO and / or NLVO is generated; determining a range of feasible velocity vector changes for the driven vehicle that are attainable within a performance time interval ΔT; repeatedly providing the driver, after each Δt, with information regarding feasible velocity vector changes for the performance time interval; sensing, estimating or assuming dynamic changes parameters representing the movement of the driven vehicle within the performance time interval, and whenever required, generating a warning signal with an escalating severity level that reflects the relative imminence of collision with the objects and that corresponds to the longest time horizon; repeating the steps above, while each time generating an updated LVO and / or NLVO for a subsequent sampling time interval, until reaching another selected time horizon which is shorter than a previously selected time horizon and another selected time horizon, until collision is unavoidable.
Owner:SHILLER ZVI

Method and system for providing warnings concerning an imminent vehicular collision

ActiveUS20070080825A1Optimal collision mitigating maneuverPedestrian/occupant safety arrangementAnti-collision systemsTime rangeSeverity level
Method for transmitting a warning signal to a driver of a driven vehicle regarding an impending collision with a moving and/or stationary object in the vicinity of the driven vehicle. The method comprises the following steps of providing the driven vehicle with means for obtaining updated data regarding, position, velocity vector and predicted moving path of the objects; selecting a series of one or more time horizons having decreasing or increasing duration; for the longest of the selected time horizons: generating a linear velocity object (LVO) and/or non-linear velocity object (NLVO) of each of the objects; selecting a sampling time interval Δt, during which an LVO and/or NLVO is generated; determining a range of feasible velocity vector changes for the driven vehicle that are attainable within a performance time interval ΔT; repeatedly providing the driver, after each Δt, with information regarding feasible velocity vector changes for the performance time interval; sensing, estimating or assuming dynamic changes parameters representing the movement of the driven vehicle within the performance time interval, and whenever required, generating a warning signal with an escalating severity level that reflects the relative imminence of collision with the objects and that corresponds to the longest time horizon; repeating the steps above, while each time generating an updated LVO and/or NLVO for a subsequent sampling time interval, until reaching another selected time horizon which is shorter than a previously selected time horizon and another selected time horizon, until collision is unavoidable.
Owner:SHILLER ZVI

Jetson TK1 based rice weed unmanned aerial vehicle monitoring system and monitoring method thereof

The invention discloses a Jetson TK1 based rice weed unmanned aerial vehicle monitoring system and a monitoring method thereof. The system comprises an unmanned aerial vehicle and a ground control station, wherein the unmanned aerial vehicle is provided with a Jetson TK1 based flight control module, a wireless transparent transmission module and an image collection module, the first wireless transparent transmission module and the image collection module are electrically connected with the flight control module respectively, the image collection module comprises a GOPRO camera and an image collection card, the ground control station comprises a PC terminal ground station and a second wireless transparent transmission module, the second wireless transparent transmission module is electrically connected with the PC terminal ground station, and the ground control station is in wireless communication connection with the flight control module through the first wireless transparent transmission module and the second wireless transparent transmission module. The Jetson TK1 based rice weed unmanned aerial vehicle monitoring system disclosed by the invention can analyze a collected real-time image in real time, thus improving the working efficiency, and the distribution and severity level of the weeds are displayed on an offline map of the ground control station, thereby being intuitiveand convenient.
Owner:SOUTH CHINA AGRI UNIV

Convolutional neural network-based asphalt pavement crack classification and recognition method

The present invention discloses a convolutional neural network-based asphalt pavement crack classification and recognition method. Road cracks are classified according to different repair strategies of cracks of different widths and shapes; sample pictures are marked correspondingly and preprocessed so as to train a constructed convolutional neural network; and the trained convolutional neural network is adopted to classify crack information in pictures, and the severity levels of cracks are divided according to the widths and shapes of the cracks. Since the crack information in the pictures is automatically classified according to a pre-classification mode, and the severity levels of the cracks are divided, and therefore, efficiency of crack identification can be improved, road maintenance and repair work can be greatly facilitated; the convolutional neural network algorithm is used as a classifier to classify the road cracks; the convolutional neural network is a layered neural network composed of convolutional layers and sampling layers which are alternately distributed; and the convolutional neural network can learn features from training data implicitly and has greater advantages in the classification of cracks with no regular and significant features.
Owner:CHANGAN UNIV
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