Autonomous traffic control device and method of AGV

Abstract

The invention discloses an autonomous traffic control device and method of an AGV. According to the invention, before entering a traffic control region, the AGV stops firstly, and entering applicationinstructions for many times are sent in a private time window of the AGV; if no AGV acquires the traffic control right in the traffic control region, the AGV enters and acquires the traffic control right; if other AGVs have acquired the traffic control right, the application will be rejected and applications can be continuously made in the next private time window; and after the AGVs which have acquired the traffic control right leave, preferential vehicles waiting for entering will be removed from the queue, and the removed vehicles are started and acquire the traffic control right. Meanwhile, based on the time window conversation mechanism, a communication occupation problem is solved; based on the traffic control right handing over mechanism, an abnormal control problem is solved. By use of the method, communication success rate can be greatly improved; active entering of the AGVs is avoided; the AGVs can be automatically recovered from the abnormity; safety and operation efficiency are improved; and orderliness of the system is improved.

Description

technical field [0001] The invention relates to the field of designing automatic guided vehicles (AGV), in particular to an AGV autonomous traffic control device and method. Background technique [0002] With the continuous improvement of industrial automation, automatic guided vehicles (AGV) are more and more widely used in modern factories, warehouses or docks. According to specific application occasions, the scale of the AGV system ranges from a single unit to dozens or even hundreds of units, and the system road network composed of multiple AGV running tracks is becoming more and more complex. The AGV traffic control system is to ensure that each AGV The safe operation of the intersection, while ensuring the orderly and efficient operation of the system. [0003] At present, the known AGV traffic control methods include travel switch or photoelectric gate method, central dispatching system traffic control method, short-range wireless communication method, etc. Among the...

AI Technical Summary

Problems solved by technology

[0008] In method a, since the communication cannot be completely guaranteed to be reliable, the traffic control information of each vehicle may not be completely synchronized, which may easily lead to traffic control failure; in method b, repeated broadcasts may easily cause communication congestion, and the traffic control mode that is actively released may easily lead to a high probability of competition, reliable The reliability is not high; method c still has the problem of too many times of communication and the increase of error probability, and there are still problems of communication congestion and queue inconsistency, and traffic accidents may still occur

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