With the rapid development of science and technology, the application of cross floor transportation realized by AGV car and intelligent elevator is not only applied in manufacturing industry, but also applied to shopping malls, residential buildings, hospitals and other occasions with elevators.However, it is not easy for AGV car to take the elevator by itself, which needs to realize the communication between AGV car and elevator system.
As the elevator belongs to special equipment, the equipment interacting with the elevator should meet the relevant requirements of the special equipment safety law, and the safety, stability and reliability of the interaction system should meet the requirements of the safe use of the elevator.Therefore, it is very important to design a safe and reliable interaction mechanism.
The data communication link between AGV and elevator should be established firstly in the interaction system of AGV and elevator. Due to the mobility of AGV, the communication between AGV and AGV management server can adopt LAN Wireless communication.The overall structure of AGV access elevator system includes AGV management server, elevator, AGV, communication module and WLAN AP.
The interaction process between AGV system and elevator is as follows: AGV applies for elevator registration → elevator feedback registration is successful → AGV queries the floor where the elevator is located → elevator feedback floor → AGV requests the elevator to open the door → elevator door opening is maintained → AGV enters / leaves the elevator → AGV stops sending door opening request → elevator closes the door → elevator releases successfully.After applying for elevator registration, AGV can proceed to the next step only if it gets the feedback from the elevator and the registration is successful. Every link in the interaction process is indispensable and closely linked. In the data segment of communication protocol, each bit of data in the data segment is fully utilized and the data bit is checked to avoid transmission and parsing errors, and the amount of communication data can be greatly reduced.
The interactive application of AGV car and intelligent elevator realizes the cross floor transportation of AGV car, and the application of AGV car to transport drugs, food and documents across floors is gradually becoming popular.