The basic principle of AGV (automatic guided vehicle) determining its position through QR code navigation is to scan the QR code on the ground with a camera and parse the information to obtain the current position.
Specifically, the sensor on the AGV (usually a camera and a processor) reads the QR code laid on the ground, outputs the distance between the center of the sensor and the center of the QR code and a deflection angle. This information is transmitted to the AGV controller, which calculates the position of the AGV on the map based on this data and generates navigation path instructions. QR code navigation is usually combined with inertial navigation to achieve more accurate positioning.
The advantages of QR code navigation include flexible use and relatively easy laying or changing paths, but the disadvantages are that the QR code needs to be maintained regularly, especially in complex sites where the QR code may need to be replaced frequently, and there are high requirements for the accuracy and service life of the gyroscope. In addition, there is no reference information in the blank area between the QR codes, and other sensors are needed to correct the deviation.