What are the types of AGV navigation systems?
The methods of AGV navigation include wire guided, inertial guided, laser guided, grid and chemical path guided. By far, the most popular methods are wire, inertial and laser guided system. • Wire guided systems have been available since the invention of the AGV in the early 1950 s. Although variations exist, most wire guided technologies employ a series of wires embedded in a shallow slot in the floor. The slot is cut in the floor using a concrete saw. The slot is approximately 1″ deep and 1/4″ wide and is backfilled once the wire is installed. The wire in the floor slot carries a low voltage, milliamp strength high frequency signal. The wire guided AGVs have sensing devices under their frames to detect the wire signals and allow the AGV to steer appropriately. • Inertial navigation systems were introduced in the early 1990 s. It is based on the use on a gyroscope onboard the AGV. Similar to gyroscopes used on airplanes, cruise missiles, etc., the gyroscope can detect minute changes i
