1. Electromagnetic navigation huadawker

The early AGV mostly used electromagnetic navigation, which is simple in principle, mature in technology and low in cost. However, it is troublesome to change or expand the path and later maintenance. Moreover, the AGV car can only walk according to the fixed route, and can not achieve intelligent avoidance, or change the task in real time through the control system. It embeds metal wires on the driving path of AGV and loads low-frequency and low-voltage current to generate magnetic field around the wires. The induction coil on AGV realizes AGV guidance by identifying and tracking the strength of navigation magnetic field.

2. Tape navigation hawker battery

Magnetic stripe navigation technology is similar to electromagnetic navigation, but the difference is that magnetic stripe is pasted on the road instead of metal wire buried under the ground, and the guidance is realized by magnetic stripe induction signal. But compared with the electromagnetic navigation, AGV positioning is much more accurate, and the path laying change is relatively easy, and the cost is lower, but it is easy to damage, and needs regular maintenance.

3. Inertial navigation hawker AGV charge

With the development of gyroscope technology, AGV has successfully realized high precision navigation. When the inertial guidance mode is adopted, the positioning module needs to be placed in the field. The AGV with gyroscope is calculated by combining the angular velocity signal supplied by gyroscope and the distance signal supplied by ranging encoder. At the same time, the positioning module on the ground also provides real-time correction signal for AGV, so that AGV self positioning can be realized. This kind of navigation has the advantages of high navigation accuracy, advanced technology and being able to be used in various fields. But it has the same disadvantage as laser navigation: high cost.

4. Laser navigation hawker ev

At present, there are two modes of laser navigation on the market:

The first one is reflector navigation, in which a laser reflector with accurate position is installed around the AGV driving path. AGV can determine its current position and direction by emitting laser beam and collecting the laser beam reflected by the reflector at the same time, and realize AGV navigation through continuous triangular geometry operation.

The other is slam navigation, which creates a map and corrects the robot's position in real time by observing the scene with lidar. It does not need to manually lay markers such as two-dimensional code, ribbon and magnetic stripe, so as to realize zero transformation of the working environment. On the other hand, the real-time detection of obstacles by lidar can effectively plan the trajectory to avoid obstacles, and improve the applicability and safety of human-computer hybrid scene.

The flexibility is also better than other navigation methods, and the positioning degree is more accurate. However, the manufacturing cost of laser navigation is high, and the requirements for environment such as external light, ground and visibility are relatively high.

5. Two dimensional code navigation hawker LPC

Two dimensional code navigation belongs to visual recognition. Compared with magnetic navigation, two-dimensional code navigation is more accurate, easy to lay and change the path, easy to control, and has no interference to sound and light. However, this kind of navigation AGV also needs regular maintenance. If someone interferes or pulls the forklift to pass by, it is easy to crush the QR code on the ground, and the QR code needs to be replaced frequently. Therefore, it is more suitable for fully automatic unmanned environment. It has strict requirements on the accuracy and service life of the gyroscope, and has certain requirements on the field leveling, so the price is high.

In fact, each navigation method has its own uniqueness and application. The advantages of tape navigation are: it is economical and easy for consumers to install, but the disadvantages are: if there is iron (magnetic body) in the driving section, the magnetic force of the guide belt will be affected and can not drive normally; The advantages of two-dimensional code navigation are: easy to lay and change the path, easy to control and high precision, but the two-dimensional code on the ground is crushed and needs to be replaced frequently; The advantages of laser guidance are: high positioning accuracy (up to ± 1mm).

HAWKERHUADA,HAWKERPZS,HUADAHAWKER

Address: www.hawker-huada.com.cn Original article, prohibit reprint, reprint please indicate the source, thank you for your cooperation.