Mobile handling robots, as one of the core pieces of equipment in intelligent logistics, have experienced explosive growth in recent years. In the mobile robot market, in addition to the well-known AGVs, RGVs and IGVs are also playing their respective roles in automated logistics systems. However, many people do not have a clear understanding of the differences between AGVs, IGVs, and RGVs.
What are the differences between RGV, AGV, and IGV?
To understand the differences between these three, let's start by looking at their concepts.
RGV is an abbreviation for Rail-Guided Vehicle, also known as a rail-guided shuttle. RGVs can be used in warehouses with various high-density storage methods. The aisles of the RGVs can be designed to any length, increasing the overall storage capacity of the warehouse. Furthermore, they eliminate the need for forklifts to enter the aisles during operation, thus enhancing safety. By leveraging the advantage of not requiring forklifts to enter the aisles, combined with the rapid movement of the RGVs within the aisles, warehouse operational efficiency is effectively improved.
AGV is an abbreviation for Automated Guided Vehicle. AGVs are transport vehicles equipped with electromagnetic or optical automatic guidance devices, capable of traveling along a prescribed guidance path, and possessing safety protection and various transfer functions.
IGV stands for "Intelligent Guided Vehicle." Compared to AGV, IGV is more flexible, does not require any markers to move, and has flexible and changeable paths that can be flexibly scheduled according to actual production needs. It is simple to plan and meets the usage needs of most factories.
In summary, from the perspective of automation and intelligence, RGV
Each application scenario has its own advantages
The shift from RGV to IGV reflects, to some extent, the development trend of mobile robots: greater intelligence, fewer auxiliary tools required, and higher flexibility. However, this doesn't mean IGV will replace other devices in the future; at least for now, they each have their own advantages in different application scenarios.
As a rail-guided shuttle, the RGV can be easily connected to other logistics systems automatically, such as inbound/outbound platforms, various buffer stations, conveyors, elevators, and robots, to transport materials according to plan. Although its flexibility and adaptability are lower compared to AGVs and RGVs, its operating efficiency is higher. Furthermore, because RGVs often need to be used in conjunction with other equipment, most manufacturers are logistics integrators, and there are relatively few companies that produce RGVs independently.
AGVs have been gaining popularity in recent years, with widespread applications in e-commerce warehousing and manufacturing. Compared to RGVs, they have a higher degree of automation and intelligence. Their travel paths can be flexibly changed according to warehouse location requirements and production processes. Moreover, the cost of changing the travel path is much lower than that of traditional conveyor belts and rigid conveyor lines.
IGVs are suitable for applications with higher requirements for flexibility. In addition to meeting the conventional handling functions, IGVs can also be equipped with different functional modules (such as lifting modules, traction modules, roller conveyor modules, etc.) according to the customer's process flow, which can meet the purpose of one vehicle for multiple uses, but the price is relatively higher.
Future Trend – Integrated Development?
In different scenarios, RGV, AGV and IGV each play to their own advantages. However, with the development of technology, the future trend may be the integration of multiple functions, one vehicle for multiple uses, to maximize efficiency and save costs.
Last year, French robotics startup ExotecSolutions launched a new industrial robot, Skypod. Skypod can carry a load of 30kg and can move on the ground, climb shelves, and retrieve goods from specific levels. Skypod essentially combines the functions of an RGV (Remotely Reinforced Vehicle) and an AGV (Automated Guided Vehicle), attracting significant attention from the industry upon its release.
Of course, whether it's integrated development or scenario segmentation, we still need to wait and see. But what is certain is that mobile robots will definitely develop in a simpler and more applicable direction in the future.
