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31. 发明授权

US07167799B1 System and method of collision avoidance using intelligent navigation 有权
标题翻译：使用智能导航的碰撞避免系统和方法
公开(公告)号：US07167799B1
公开(公告)日：2007-01-23
申请号：US11387414
申请日：2006-03-23
申请人： Dmitri A. Dolgov , Kenneth P. Laberteaux
发明人： Dmitri A. Dolgov , Kenneth P. Laberteaux
IPC分类号： G01C23/00 , G06F19/00
CPC分类号： G08G1/164
摘要： A system and method of intelligent navigation with collision avoidance for a vehicle is provided. The system includes a global positioning system and a vehicle navigation means in communication with the global positioning system. The system also includes a centrally located processor in communication with the navigation means, and an information database associated with the controller, for identifying a location of a first vehicle and a second vehicle. The system further includes an alert means for transmitting an alert message to the vehicle operator regarding a collision with a second vehicle. The method includes the steps of determining a geographic location of a first vehicle and a second vehicle within an environment using the global positioning system on the first vehicle and the global positioning system on the second vehicle, and modeling a collision avoidance domain of the environment of the first vehicle as a discrete state space Markov Decision Process. The methodology scales down the model of the collision avoidance domain, and determines an optimal value function and control policy that solves the scaled down collision avoidance domain. The methodology extracts a basis function from the optimal value function, scales up the extracted basis function to represent the unscaled domain, and determines an approximate solution to the control policy by solving the rescaled domain using the scaled up basis function. The methodology further uses the solution to determine if the second vehicle may collide with the first vehicle and transmits a message to the user notification device.
摘要翻译：提供了一种用于车辆的防碰撞的智能导航系统和方法。该系统包括与全球定位系统通信的全球定位系统和车辆导航装置。该系统还包括与导航装置通信的位于中心的处理器，以及与控制器相关联的用于识别第一车辆和第二车辆的位置的信息数据库。该系统还包括警报装置，用于向车辆操作者发送关于与第二车辆的碰撞的警报消息。该方法包括以下步骤：使用第一车辆上的全球定位系统和第二车辆上的全球定位系统来确定环境内的第一车辆和第二车辆的地理位置，并且对环境的碰撞避免域进行建模第一辆车作为离散状态空间马尔可夫决策过程。该方法缩小了避碰域的模型，并确定了解决缩小碰撞避免域的最优值函数和控制策略。该方法从最优值函数中提取出一个基函数，将提取的基函数放大以表示非扩展域，并通过使用按比例扩大的基函数求解重定标域来确定控制策略的近似解。该方法进一步使用该解决方案来确定第二车辆是否可能与第一车辆相撞并且向用户通知装置发送消息。

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