Outdoor AGV traffic avoidance method and device without fixed communication network

Abstract

The invention relates to the technical field of intelligent traffic avoidance, and provides an outdoor AGV traffic avoidance method and device without a fixed communication network, and the device comprises an outdoor AGV, a WIFI communication module, an AGV scheduling system, and a traffic light synchronization system. The method comprises the following steps: (1) carrying out clock synchronization on an AGV scheduling system and all actual traffic lights; (2) analyzing all routes of the AGV, and setting virtual traffic lights in an area with traffic conflicts but without actual traffic lights; (3) when the AGV scheduling system issues a task to a certain AGV, traffic light information and clock information of the AGV scheduling system are issued at the same time; (4) before the AGV passes through the traffic light control area, it is ensured that the remaining time is longer than the passing time; if the AGV stays in the avoidance area in a time-out state or a fault state in the passing process, trying to broadcast position information to all the AGVs to give an alarm; and (5) discretely applying the indoor network to the outdoor route, so that the dispatching system discretely monitors the AGV.

Description

technical field [0001] The invention relates to the technical field of intelligent traffic avoidance, in particular to an outdoor AGV traffic avoidance method and device without fixed communication network. Background technology [0002] Automated guided vehicle (AGV) belongs to the category of mobile robots. There are nearly 10 AGVs, which are more and more widely used at home and abroad. It is mainly used in indoor environment with relatively simple and standardized environmental layout. In outdoor environment, due to the complexity and difficulty of conventional communication network deployment, and 4G signal is subject to the deployment of communication base stations of communication suppliers, the signal is unstable, The 4G signal in some remote areas is very poor, especially in unstable weather such as rain and snow; If the communication supplier repairs the base station, the relevant enterprises will face the risk of shutdown; In addition, the traffic avoidance between AGV...

AI Technical Summary

Problems solved by technology

[0005] At the same time, in the invention patent with the application number 201810763462.7, a method and device for generating a virtual zebra crossing are disclosed, which can obtain the current position of the vehicle; generate the distance information between the current position of the vehicle and the predetermined position ahead; judge Whether the distance information is a preset distance; if the distance information is a preset distance, obtain the color of the traffic light corresponding to the predetermined position; judge whether the color of the traffic light corresponding to the predetermined position is red; When the color of the above-mentioned traffic light is red, a virtual zebra crossing is displayed; the main solution is that "the existing zebra crossing is composed of a plurality of parallel white solid lines, and the zebra crossing can only remind the driver through the external vision. When the mind is distracted or the line of sight is diverted, accidents are likely to occur, resulting in unnecessary traffic accidents. In addition, when the driver is driving at night, because the light is darker than in the daytime, the driver's recognition of the zebra crossing is low, resulting in accidents during driving. Unexpected possibility will increase" problem;

[0006] The above three documents are all representatives of existing technologies using virtual technology, and they cannot fully satisfy the simple implementation of automatic driving technology in the process of use, and cannot meet the needs of simple applications (difficult to communicate with traffic lights or unable to obtain stable data). In the case of network) for AGV application

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