System and method for generating driving state and path of transportation vehicle

Abstract

The invention discloses a system for detecting a driving state and generating a path of an AGV (Automatic Guided Vehicle) based on RFID (Radio Frequency Identification). Passive RFID tag arrays are embedded in a container wharf and a storage yard and used for establishing position coordinate systems of the wharf and the storage yard; by virtue of RGID reading antennas mounted under the front and the back of an AGV body, RFID tags, which are embedded in the storage yard, in a sensing range of the antennas are read in the driving process of the AGV, so that state information such as the current position, speed and direction of the driving AGV can be obtained; then a real-time driving path of the AGV is generated according to the current position of the AGV and an AGV driving instruction (target position) from a central control system, thereby achieving the path driving control of the AGV through a driving controller of the AGV. The system is simple to implement, reliable in performance, practical and free from influence of the environment, can be applied to unmanned automatic navigation of the AGV at the intelligent container wharf and also can be applied to the unmanned automatic navigation of a cargo carrying vehicle at a large automatic logistics warehouse.

Description

technical field [0001] The invention relates to a generating system and method, in particular to a system and method for detecting the driving state of an automatic navigation vehicle and generating a path for radio frequency devices. Background technique [0002] The new generation of large-scale intelligent container terminals can realize unattended fully automated container loading and unloading, which can greatly improve the efficiency of container port loading and unloading. In the process of container loading and unloading, the container plane transportation task between the front of the terminal and the rear yard is mainly completed by the unmanned automatic guided vehicle (AGV, Automated Guided Vehicle); [0003] During the process of AGV hauling containers, the driving path of AGV will be preset according to the conditions of roads and obstacles in the terminal yard, and the driving path of AGV can be modified by detecting the motion state of AGV during driving. Am...

AI Technical Summary

Problems solved by technology

However, the AGV driving position detection system established by ETS is expensive, and the environment in which the AGV is located is harsh, bumpy driving, wind and rain, etc. will adversely affect the performance and life of ETS;

[0006] The detection of the driving position of the AGV can also be performed by detecting the rotation speed and steering angle of the front and rear wheels of the AGV. On the basis of determining the initial position of the AVG, the current position state of the AGV can be calculated (estimated) through cyclic superposition calculations; however, this method mainly Depending on the model calculation, the accumulated errors may affect the driving safety of the AGV

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