First, Background
Warehouse management occupies a central position in logistics management. In the traditional warehouse management, data collection relies on manual entry or barcode scanning, which is less efficient; The division of the cargo space in the warehouse is not clear, and the stacking chaos is not conducive to convergence; The physical inventory technology is backward, resulting in often discrepancies between the accounts and the facts; Human factors have a large impact, high error rate, and increase additional costs; Lack of process tracking, difficult to define responsibilities and other issues. Through intelligent logistics, we will increase the upgrading of equipment technology, improve the level of automation, realize the strategy of replacing people with machines, and effectively solve the existing pain points of warehousing and logistics management. Among them, the AGV trolley is an indispensable tool in the intelligent logistics warehouse.
Second, the principle of AGV trolley system
1. Introduction to AGV trolleys
An AGV (Automated Guided Vehicle) is a transport vehicle with an electromagnetic, optical or visual automatic guidance device that safely delivers goods to a designated location without the need for a driver, powered by an automatically charged battery. It quickly stands in the automated warehouse with the advantages of irregular occupation of ground area, high degree of automation, flexible application, safety and reliability, unmanned operation, and convenient maintenance. AGV trolleys are the key equipment of modern logistics systems, and their design and development is of great significance for improving automation and production efficiency.
2. How the AGV system works
The brain of the AGV system is the control management system, which is composed of a graphic monitoring system, a radio communication system, a laser guidance system, a reflector navigation system, an information acquisition system, and an automatic charging system. The control center will release the work task through the wireless device, and the AGV trolley closest to the task point will arrive at the specified location according to the information received according to the information received and arrive at the specified location according to the path preset by the control center. During the driving process, the AGV trolley navigates and corrects the deviation of the driving route by scanning and calculating the surrounding reflectors by the laser head to ensure the accuracy of the driving path. At the same time, through the computer system to report their driving position and job completion progress, and reflected in the image monitoring system. If there is a traffic jam during the driving of the AGV car, the control management system will automatically carry out traffic evacuation and management. When the AGV car has insufficient power and cannot work normally, the AGV car will send out a charging instruction signal, and after the control center receives the signal, it will issue a charging instruction, and the AGV car will automatically drive to the charging station to complete the charging task. At the end of charging, the signal acquisition system will collect the end signal and feedback it to the control center, and then the control center will issue the instruction to end charging, and the AGV trolley will complete the charging task.
The AGV trolley composition is shown in the figure
3. Advantages of automatic transmission of AGV compared to manual handling
(1) High work efficiency
AGV to achieve loading and unloading and back and forth transportation work, the implementation of non-stop material change, shorten the manual material change time, AGV trolley can achieve automatic charging function, so as to achieve 24 hours of continuous operation work, greatly improving work efficiency.
(2) Save management energy
AGV robot is fully intelligent management, thereby improving the level of intelligent management and effectively avoiding personnel factors.
(3) Better flexibility and system expansion
Intelligent sensor development of intelligent AGV trolley, in addition to the traditional position, speed, acceleration, etc., but also the application of machine vision, force feedback and other multi-intelligent sensor fusion technology to decision control, in the associated equipment multi-sensor fusion configuration technology in the existing AGV equipment system has been mature application.
(4) High reliability
Compared with the low efficiency of manual handling, forklift and trailer driving path, speed, safety unknown, AGV driving path and speed controllable, positioning and parking precision, thereby greatly improving the efficiency of material handling, at the same time, AGV central management system, can monitor the AGV trolley throughout the process, reliability has been greatly improved.
(5) The cost is lower
The performance of intelligent AGV trolleys continues to improve (high speed, high precision, high reliability, easy operation and maintenance), and the price of stand-alone machines has been reduced through the standardization of functional components, and the average price of single machines has been reduced from 70,000 yuan to 50,000 yuan. It can benefit more small and medium-sized enterprises.
(6) High security
In order to ensure the safety of AGV itself during operation, the safety of on-site personnel and various types of equipment, AGV of Dongjin Technology adopts multi-level hardware and software security measures.
Third, the operation process of AGV trolley in intelligent warehouse
1. Enter the sorting yard operation
When the goods are transported by car to the warehouse, the car aligns the tail to the unloading point and matches the path of the AGV trolley. At this time, the control center issues a task to dispatch the nearby AGV trolley to the unloading point, and the AGV trolley transports the whole box of goods to the goods into the goods storage conveyor line according to the pre-set driving path. Because the number of AGV trolleys is limited and the number of goods in storage is large, each AGV trolley will complete the “pick-put” work task in a loop. In addition, the AGV trolley transports the stacked empty pallets to the empty pallet splitting equipment for splitting, ensuring that the goods and the supporting supply of the pallets are followed up at the same time.
2. Intelligent transfer area operation
The operation of the intelligent transfer into the storage area is done automatically by AGV trolley. When the cargo yard is completed, the AGV trolley takes the whole pallet from the interface and transports it according to the pre-laid running route, and transports the whole pallet to the storage area interface. Since the whole pallet outlet and interface have multiple, each AGV trolley in accordance with the instructions of the control management system to take out the goods from the designated interface of the conveyor sorting yard area, and then automatically run to any of the system set up the warehouse area interface, to complete the automatic sorting and transportation of the whole pallet, at the same time, the entire operation process is carried out under the coordination of the control and management system, to ensure smooth traffic, orderly operation, It improves the efficiency of the transfer and storage operation and increases the flexibility of the whole system.
3. Intelligent output area operation
The intelligent transfer out of the warehouse area is also completed by AGV trolleys. According to the operation instructions issued by the control management system, the AGV trolley takes the entire pallet of goods from the pre-defined route to the outbound chain machine, and then transfers to the interface of the automatic dismantling and delivery area according to the transfer. The whole pallet interface and the dismantling and delivery area interface of the transfer out of the warehouse area are also multiple, AGV trolleys can take out the goods from the designated interface under the command of the system, and then automatically run to the warehouse area interface set by the system to complete the automatic sorting and transportation of the whole pallet, under the control of the traffic management system, AGV trolleys strictly follow the prescribed paths, drive and operate independently of each other, and also let each other drive, Increased smoothness and flexibility.
4. Automatic dismantling and delivery area operation
The goods out of the warehouse are transported by the telescopic belt machine to the rear of the delivery vehicle, in accordance with the “principle of proximity”, the control system arranges the nearest AGV car to reach the rear of the car according to the pre-set path, and the goods on the telescopic belt machine are removed and stacked in a neat and orderly manner in the carriage, avoiding manual stacking and improving the efficiency of operation. Empty and zero pallets after the separation of goods are put into storage by AGV trolleys. The entire process can be unmanned operation, which improves the intelligent level of warehouse operations.
Fourth, the value of the system
1. Automatic operation, automatic optimization of the route
In the past, the traditional logistics sorting is done manually, not only low efficiency, and large workload, requiring a lot of overtime, and easy to make mistakes, so it is easy to affect the image and reputation of the enterprise, and with the AGV trolley, only need to put the shelves on the agv, you can automatically optimize the route, the shelves automatically transported to the destination. Such goods to find people to work, for enterprises is extremely convenient and convenient.
2. Safe, fast and automatic diagnosis
AGV trolley work faster, far more than the manual, and because it is an artificial intelligence product, has a certain self-diagnosis function, therefore, in the operation can also be automatically analyzed, automatic diagnosis, once there is a problem, can be solved in time.
3. Commands can be received
Unlike ordinary handling equipment, AGV trolleys can receive remote instructions, as long as there is a network, wireless or infrared to complete the task of instructions, very convenient.
4. Realize refined, flexible and information-based logistics management
AGV trolley can be used with modern logistics technology, and can realize the point-to-point automatic access function, in the process of handling and operation, can ensure refined operation, flexible cooperation, information processing, so as to make logistics management more intelligent.
Nowadays, problems such as low work efficiency, chaotic inventory division, and backward inventory technology are no longer the problems that plague the logistics and warehousing management of enterprises, and Ruifengde’s advanced intelligent AGV can solve many problems. Many companies have turned to warehousing and logistics intelligence, like Amazon is the use of AGV robots, although it is the earliest batch of robots, but its scanning, weighing, sorting functions are not lacking, and can identify simple information, to achieve the optimal processing of the line, it is said that the effect of sorting 18,000 pieces per hour can be achieved. More importantly, through intelligent logistics, improve the level of equipment technology, improve the level of automation management, and realize the situation that AGV robots replace manual operations, so as to truly solve some problems in the logistics warehousing process and truly realize intelligent warehousing management.
