首页|Patent Application Titled 'Method And Apparatus For Improving Range Finding Syst em Readings' Published Online (USPTO 20240077595)
Patent Application Titled 'Method And Apparatus For Improving Range Finding Syst em Readings' Published Online (USPTO 20240077595)
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Reporters obtained the following quote from the background information supplied by the inventors: “Range finding systems are used in a variety of settings to re motely obtain distance measurements. Many autonomous robotic devices use range f inding systems such as Light Detection and Ranging (LIDAR), sonar, depth cameras, and the like systems to navigate environments and avoid obstacles. Range findi ng systems are also used to obtain data for generating maps of environments whic h may be used for navigation. During normal operation, a robotic device with a m ounted range finding system drives on flat surfaces and obtains distance measure ments to surfaces opposite the range finding system. However, range finding syst ems may deliver inaccurate distance measurements when tilted. Such instances may occur in cases where a range finding system is installed on a robotic device tr avelling over an obstacle before resuming movement on a flat surface. When tilte d, the range finding system captures a few readings of distances to a point on the surface positioned at an angle other than the appropriate flat surface angle, thereby producing inaccurate readings. In prior art, sensor tilt has been prede termined for common obstacles to correct for measured ranges. However, this meth od requires calibration to determine sensor tilt for common obstacles and the ro botic device may encounter obstacles unknown to the system. Prior art also descr ibes a method whereby the angle of inclination or misalignment, calculated using different types of systems consisting of cameras and/or sensors, is used to adj ust the distance measurements of the range finding system. However, this may onl y be applied if the tilt of the robotic device is uniform across the system and requires additional equipment. The present invention addresses these issues by i ntroducing a more efficient system utilizing a computer-integrated method to ide ntify and discard inaccurate range finding readings.”
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