With the continuous development of science and technology and the popularization of automation, intelligent handling robot, as an important tool of enterprise automatic transportation technology, has been perfect technically and widely used in various industries. The intelligent handling robot can ensure the safe, accurate, intelligent and efficient transportation of raw materials to the destination. Therefore, intelligent handling robots have also derived a variety of navigation methods. Next, we can analyze the mainstream navigation technology of intelligent handling robots in recent years.
Magnetic stripe navigation
Magnetic stripe navigation is a relatively perfect navigation method at this stage. The main application is to lay magnetic strips on the operation line of the handling robot, and then the intelligent robot obtains the error between the machine itself and the target tracking path according to the electromagnetic field data signal on the path, and then completes the navigation work of the machine transportation through accurate and reasonable calculation and measurement.
Compared with other navigation technologies, magnetic strip navigation has the advantages of low price, perfect technology, accurate and reliable positioning. The disadvantage of magnetic strip navigation is the corresponding preparation work. It must have certain installation settings for the operation route, which requires certain labor and time costs; And the magnetic strip is easy to lose; In addition, if the working line is changed, the magnetic stripe paved on the line also needs to be changed; There are also shortcomings such as high maintenance cost of quality.
Magnetic nail navigation
The application principle of magnetic nail navigation is to find the location and driving path according to the magnetic data signal of the magnetic nail received by the navigation sensor. The distance between the magnetic nails cannot be too large, and when between two magnetic nails, the handling robot will be in the state calculated by the encoder.
The common module of magnetic nail navigation is almost the same as the magnetic strip navigation module. The advantages of magnetic nail navigation are low price, complete technology, good appearance and concealment of magnetic nail, strong anti-interference ability, and wear resistance, which can be applied indoors and outdoors. The defect of magnetic nail navigation is that the preparation work is large, and we need to pave the route again when changing the operation route; And the magnetic nail navigation pavement project will also cause certain damage to the road surface and other shortcomings.
Slam laser navigation
Slam laser navigation is the most advanced navigation technology adopted by intelligent handling robots at this stage. This technology mainly uses a two-dimensional laser scanner to accurately measure the current environment and make the current navigation environment. Without the surrounding environment information, the intelligent handling robot can make the handling robot familiar with the surrounding environment in the current environment according to its own sensors, and construct the environmental topographic map.
Compared with other navigation technologies, the advantage of Slam laser navigation is that it does not need to carry out ground engineering construction, which facilitates the application of enterprises, and also facilitates the later line changes; Moreover, it has strong sensing ability, can adapt to the environment well, and can avoid obstacles in time; Navigation has the advantages of simple construction and short cycle time. The defect of Slam laser navigation is that the positioning is not so accurate, it is easy to lose the positioning accuracy in some complex terrain environments, and it is greatly affected by the environment.