The automatic unmanned guided vehicle emits the laser beam by the transmitter head, and then receives the laser beam reflected from all directions. To calculate your own position and direction of movement to realize automatic handling.
Several cables with different frequency currents are buried under the ground surface of the AGV running route, and the signals are respectively detected by the AGV controller through the antenna to control and guide the AGV to run along the designated route. The antenna and its induction coil are used to detect the offset of the AGV relative to the guide cable, and accurately correct the running direction of the AGV.
This kind of guidance method belongs to the traditional way, the technology is relatively mature, the cost of the AGV itself is low, and the work is reliable. The disadvantage is that cables need to be buried under the surface of the running line, which requires long construction time, high cost, and difficulty in changing routes. This guidance method is suitable for large and medium-sized AGVs and is still widely used.
The working principle of laser guidance uses the laser scanner installed on the AGV to identify several positioning marks set in its range of motion to determine its coordinate position, thereby guiding the operation of the AGV. This working method belongs to navigation guidance.
The laser scanner is generally installed at a higher position of the AGV, so that the positioning marks and the laser scanner can better correspond, and are connected to the AGV control board through the serial port of the system. The positioning signs are made of highly reflective materials and fixed on the walls or pillars along the way.
The laser scanner uses a pulsed laser to emit laser light and rotates through an internal mirror at a certain speed to scan the surroundings, measure the distance and angle of each positioning mark, and calculate the X and Y coordinates of the AGV, thereby guiding the AGV in accordance with the advance The set route runs. You can use learning software to find out the corresponding positioning marks and store their coordinate positions.
