Ever sincethe entry ofautonomousforklifts into the market, the positioning and navigation methods have experienced a gradual upgrade, from the initial magnetic stripe navigation, QR code navigation, and laser reflector navigation to 2D SLAM navigation solutions. However, the old positioning and navigation methods still need to improve in terms of limitation, cost, deployment time, etc. VisionNav Robotics’3D laser SLAM positioning solutioncan reduce people’s workload, such as constantly sticking and removing QR codes and reflectorsfrom the workshop. 3D laser SLAM can adapt to high-precision positioning indoors and outdoors and break through the limitations of complex working scenarios like climbing slopes and unloading on platforms. Also, 3D laser SLAM has higher adaptability to environmental changes.
Our clientis a digital high-end intelligent equipment manufacturing enterprise seekingautomated production lines, smart equipment, etc., to improve work efficiency. The project involves the plane transfer, docking conveyor lines, collectingand stackingempty pallets, etc. The height of the conveyor line is about 27.56-31.50 inches, and the pallet is a perimeter base pallet. VisionNav’s flexible logistics solutionhelps realize the automatic handling of materials from the mixed storage area to the designatedplatform, thus improving logistics efficiencyand yielding a better collaboration between humans and robots.
VisionNav Roboticscomprehensively considerscustomer needs and project site conditions, import the central control scheduling system to connect with the customer's WMS system, and configure a customized wide-leg VNSL14 pallet stackerautonomousforklift to adapt to the perimeter basepallet. At the same time, based on the 3D positioning and navigation scheme,to realizeAutonomous positioning and navigation of the VNSL14 autonomousforklifton site.
VNSL14 Handling Scene
Phase One - Plane Material Transfer
When the goods are unloaded in the cargo buffer area, workers on site can use aPDA to scan the cargo informationand send the information to the WMS. Next,WMS will generate task instructions and send them to the central control scheduling system, and dispatch the VNSL14 autonomousforklift to transport the goods in the buffer areato the conveyor line.
VNSL14 Plane Transfer Scene
Phase Two - Docking Conveyor Line
VNSL14 autonomousforklift puts the goods ontothe conveyor line in turn and returns to the feeding station area to wait. When the goods on the conveyor line pass the inspection, the VNSL14 autonomousforklift thencontinues to the next task; if the goods are unqualified, the system will generate a priority task for the VNSL14 autonomousforklift topick up the unqualified materials from the conveyor lineto the pending areas waiting to be re-processed.
Docking Conveyor Line
Phase Three - Collectingand StackingEmpty Pallet
The task command is generated by the central control scheduling systemof VisionNav Robot. As a result, the VNSL14 autonomousforklift is dispatched to the conveyor line to collectthe empty pallets. After the material on the conveyor line is consumed, the system modules installed within the conveyor line will send the collecting signal to the customer's WMS system.
Empty Pallets Collecting and Stacking Scene
3D laser SLAM Positioning and NavigationSystem
The VNSL14 autonomousforklift in thisproject adopts the 3D laser SLAM positioning and navigation systemto realize the autonomous positioning and navigation of the autonomousforklift on site. The 3D SLAM based on the laser dot-cloud technology obtains the three-dimensional space point data of the object through the sensor. Inanunfamiliarspace, the autonomousforklift acquiresthe environmental featuresthrough repeated observation during the movement process, locates its position and status, and then incrementally builds maps to achieve simultaneous positioning.
Five-layer of Empty Pallet Stacking
In collecting empty pallets, the VNSL14 autonomousforklift has to complete five layers of empty pallet stacking to save storage space. It can accurately identify the pallet pose, fork hole position, etc., based on the 3D laser sensor. When VNSL14performs stacking tasks, it canadjust the body for adaptive fork picking and stacking, with a repeat placement accuracy of ±10mm.
Empty Pallets Collecting Scene
Integrating VNSL14 and the central control system provides more possibilities for the autonomous collecting and picking of empty pallets onsite. The customized VNSL14with wide outriggers issuitable for the customer's perimeter basepallet.The collaboration generated by humans and robots greatly optimizes work efficiency in light of complex factors in various workshops.