公开(公告)号：US20170052033A1

公开(公告)日：2017-02-23

申请号：US15225158

申请日：2016-08-01

Applicant: iRobot Corporation

Inventor： PHILIP FONG ,  Ethan Eade ,  Mario E. Munich

IPC: G01C21/32 ,  G05D1/02 ,  G01C21/20

CPC classification number: G01C21/32 ,  G01C21/20 ,  G01C21/206 ,  G05B15/00 ,  G05D1/0088 ,  G05D1/0238 ,  G05D1/0246 ,  G05D1/0274 ,  G05D2201/0216 ,  Y10S901/00

Abstract: A system and method for mapping parameter data acquired by a robot mapping system is disclosed. Parameter data characterizing the environment is collected while the robot localizes itself within the environment using landmarks. Parameter data is recorded in a plurality of local grids, i.e., sub-maps associated with the robot position and orientation when the data was collected. The robot is configured to generate new grids or reuse existing grids depending on the robot's current pose, the pose associated with other grids, and the uncertainty of these relative pose estimates. The pose estimates associated with the grids are updated over time as the robot refines its estimates of the locations of landmarks from which determines its pose in the environment. Occupancy maps or other global parameter maps may be generated by rendering local grids into a comprehensive map indicating the parameter data in a global reference frame extending the dimensions of the environment.

Abstract translation: 公开了一种用于映射由机器人映射系统获取的参数数据的系统和方法。 当机器人使用地标在本地化环境中时，收集表征环境的参数数据。 参数数据被记录在多个局部网格中，即当收集数据时与机器人位置和取向相关联的子图。 机器人被配置为根据机器人的当前姿态，与其他网格相关联的姿势以及这些相对姿态估计的不确定性来生成新的网格或重用现有网格。 与网格相关的姿态估计随着时间的推移而更新，因为机器人精简了对地标位置的估计，从而确定了其在环境中的姿态。 可以通过将局部网格渲染成全面的映射来生成占用映射或其他全局参数映射，该综合映射指示在扩展环境维度的全局参考帧中的参数数据。