Abstract: The present invention provides a system and method for detecting position deviation of inventory holder based on feature information graphs. Step 1. Mount upward-looking cameras on robots; Step 2. Calibrate the mapping relationship between the pixel coordinate system of the cameras and robot coordinate system; Step 3. Dispose graphs having feature information on the bottom of the inventory holders, and measure coordinates of the feature points of the graphs under the coordinate system of inventory holders; Step 4. After the robots lift the inventory holders, the upward-looking cameras scan the graphs, and obtain the pixel coordinates of the feature points of the graphs; Step 5. Via the mapping relationship in Step 2, calculate and find out the coordinates mapped into the robot coordinate system by the pixel coordinates of the feature points of the graphs; Step 6. Calculate the position deviations of the inventory holders relative to the robots.

Abstract: The present invention provides a traffic management method for a mobile robotics system, including: step 1, defining the physical size of a mobile robot and the position of a point on a traveling path; step 2, for each point on the traveling path, obtaining profile information of the mobile robot on this point in combination with the physical size of the mobile robot, so as to further obtain the profile information of the mobile robots over the whole traveling path; step 3, with respect to a first path, calculating whether the profiles of the mobile robots on the first path and on a second path intersect, and if the profiles thereof intersect, then the first path and the second path are disjoint; step 4, calculating whether the profiles of the mobile robots on the first path and all other paths intersect, so as to further obtain the disjoint sets of all paths.

Abstract: A path planning method is provided for mobile robots, including the following steps: Step 1. Searching for available paths according to the destinations of moving of the robots and the nodes properties on the map; Step 2. Determining the optimum path, according to the weights of the segments on all the available paths, with the segments being arbitrary curves made up of Bezier curves or splined curves of a plurality of control points; and Step 3. Driving the robots to move along the optimum path, and to stop at the stop points. The present path planning method for mobile robots increases the ways of connection between the nodes significantly and avoids that there is only a single way of connection between two nodes.

Abstract: The present invention discloses an unmanned transporting robot and the chassis thereof, the chassis includes a floor, a drive unit and a follow unit; the follow unit is used to bear the loads of the chassis and the payload, and includes a plurality of follow components which are arranged on the floor to enable the floor to move smoothly (i. e. without the occurrence of tilting or vibration); the drive unit includes a first drive component and a second drive component which are located symmetrically on both ends of the floor. The present invention also discloses an unmanned transporting robot including the above-described chassis. The chassis of the unmanned transporting robot according to the present invention has the advantages of a compress structure, a small size and a high loading-bearing capacity.

Abstract: The present invention discloses a AP switching method for mobile robots based on path setting, including the following steps: install APs in the application environments of mobile robots; control the mobile robots to move along established routes, record the signal strengths of each of the APs on each of the paths of the mobile robots, and determine the AP with the strongest signal strength on each path; configure the MAC addresses of the APs to be connected on each path whereon the mobile robots will move; the mobile robots monitor continuously whether the AP that is connected at the moment coincides with the AP configured for the current path, if not, then switch to the configured AP directly. The present invention can avoid effectively the problem of switching APs excessively frequently, the method is simple and effective, without the need for setting thresholds for signal strengths, and it can decrease uncertainty effectively, which is valuable in the application environments of mobile robots.

Abstract: The present invention discloses a robot for transporting inventory holders, comprising a chassis, a drive unit, a follow unit and a lift unit. The lift unit comprises a fixing frame, a pallet, a lower connecting plate, a sliding module, a guided screw, a guided screw nut, a motor, an actuating mechanism, a position-limit module, and a positioning module. The fixing frame, the pallet and the lower connecting plate are each provided with an opening, and the three openings are coaxial and mutually communicated. The positioning module is removably disposed inside the through holes, and the guided screw is disposed on the side edge of the fixing frame, avoiding the positioning module. The robot for transporting inventory holders according to the present invention has the advantages of simple structures and lower costs.

Abstract: The present invention discloses an inventory item management system, transporting robots and the method for transporting inventory holder, wherein the transporting robot comprises a lifting unit and a horizontal rotation unit, the lifting unit comprises a first power unit, a lifting shaft and a first supporting part, and the first power unit configured to drive the first supporting part to move along the lifting shaft; the horizontal rotation unit comprises a second supporting part and a second power unit which drives the second supporting part, and the second supporting part and the first supporting part are connected rotatably. The lifting unit has a hollow hole which is disposed in vertical direction internal to the lifting unit, and the lifting shaft is located on one side of the hollow hole.