Wireless Control Network For AGV Near Field Communication System

With the rapid development of Internet of Things technology,a variety of intelligent robots continue to appear in people's lives.They receive instructions or automatically sense and then perform corresponding actions to accomplish specified tasks.A mobile robot is a kind of intelligent robot that works in a complex environment and has its own organization,autonomous operation,and autonomous planning.It integrates robotics,communication technology,microelectronics,information technology,and computer technology.Automated Guided Vehicle(AGV)is a robot system composed of a sensor,an automatically controllable mobile carrier,and a remote master controller.Currently,AGV is widely used in e-commerce,medicine,automobiles,and electric power.In tobacco and other industries,especially in the storage and transportation of automated warehouses.AGV near field communication refers to the exchange of control information between the AGV and its neighbors such as the current position,direction of movement,and speed of movement.This paper analyzes the demand of AGV near-field communication,designs and implements a wireless control network system supporting AGV near-field communication based on IEEE 802.15.4 for large-scale,high-frequency,low-latency,and high-reliability requirements.This article designs the overall scheme of the network system,divides the network role and design the protocol stack according to the needs,selects the underlying hardware platform,and gives the network capacity analysis model.By designing the short time slot synchronous MAC protocol and simplifying the frame format according to the application scenario,reasonable use RADIO to provide hardware time stamps to shorten time slots to meet the needs of large-scale node high-frequency communications within the network system;introduce auxiliary clock source access points AP,expand the coverage of the clock source to the entire network and design a reasonable clock source switching scheme necessary Synchronous clock source switching;based on the spatial distribution characteristics of AGVs(the number of AGV neighbors does not exceed 30% of the total number),based on the analysis of link conflicts and solutions to link collisions,a more comprehensive use of time-slotresources based on space multiplexing technology is proposed.;given the complete design of the entire system including the application layer and the AGV and MAC layer interaction,platform selection,testing and transplantation;at the end of this paper,design experiments to test the short time slot proposed in this paper Synchronous MAC protocol,AP clock source switching technology and based on space expansion technology analysis of the impact on network systems proposed real environment and movement.