Emergency ambulance priority pass modeling method based on Petri network
A modeling method and time synchronization technology, applied in the field of Petri net modeling, can solve problems such as vehicle congestion, lack of response to lateral traffic flow, collision danger, etc., and achieve the effect of priority traffic, easy implementation, and time saving
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[0028] The purpose and effects of the present invention will become more apparent by describing the present invention in detail below with reference to the accompanying drawings.
[0029] figure 1 The model in describes the transformation process of the signal lights at the two-phase intersection in the normal state. The initial state is that the east, west, north, and south lights are all red (that is, only p 3 ,p 6 ,p 8 contains Token); after 5 seconds t 1 trigger, p 1 Obtain Token, the north and south green lights are on, allowing vehicles to travel south and north; after the green light is on for 30 seconds, t 2 trigger; green light off, p 2 and p 7 Obtain a Token respectively, and the north and south yellow lights are on; after 3 seconds, t 3 trigger, the token enters p 3 , the north and south red lights are on; keep the red lights overlapping for 2 seconds and then t 4 Trigger (up to this point, the east-west direction has been a red light, and it has been maint...
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