"Integration and Innovation, All Things Intelligent Alliance". The World Internet of Things Expo 2019 was held in Wuxi City, National Sensor Network Innovation Demonstration Zone, from 7 to 10 September. The technology of intelligent network transportation facing 5G vehicle network and driverless has become a hot spot of this Expo.
In the innovative application exhibition area of national-level vehicle network pilot area, the most striking example is traffic signal induction at the third level of "block chain" of Saikang Jiaoan: the first level is a guide sign with digital, optical band and text and graphics emitting fresh light; the second level is a group of four lane indication signs, two of which can be changed; Class I is the traffic light.
Professor Liu Gan, chairman of Nanjing Saikang Traffic Safety Technology Co., Ltd., who presented the technical achievements, introduced that its core technology is equivalent to "block chain", which belongs to the new intelligent road traffic application mode of computer technology such as distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and so on.
Firstly, Internet platforms such as Golden Map will acquire various real-time traffic flow data of road network through the vehicle terminal in motion. Through the mathematical calculation of cloud platform, the time required for the distance from the departure place to the destination will be digitally released and displayed at the first level. The green (unblocked) and yellow color will be synchronously displayed on the Light-Band LED pixel screen. Color (slow) and red (congestion) indication information.
Secondly, the lane signs of the second level will selectively change the lane arrows to optimize the allocation of lane space resources according to the traffic flow data of the corresponding downstream sections from the cloud platform. Its function of regulating traffic flow is also equivalent to the gate between the upstream and downstream of the river.
The first two levels of logo information content will digitally issue instructions to vehicles via RSU communication equipment on the roadside. Because of its unique panel display luminescence technology, it can provide long-distance visual performance to artificially driven vehicles in all-weather environments such as bad weather.
Finally, the data synchronization interaction between the third-level traffic lights and the second-level Lane signs, combined with the pedestrian and non-motor vehicle crossing data of intelligent monitoring, makes the corresponding matching time optimization strategy and carries out, and the data information of the traffic lights is also sent to the vehicles through RSU devices.
In the whole operation process of "block chain" three-level traffic signal guidance system, traffic flow, traffic signals (signs and traffic lights), road and road network space, moving vehicles, pedestrians and non-motor vehicles, the interactive transmission within regional space is established, and the mutual coordination and coordination of consensus mechanism is formed by encryption operation, so as to achieve the goal. To be a safe and efficient operation target. Because of the formation and use of all data links, storage and operation on cloud platform are transmitted and downloaded via RSU devices, which is safe and reliable.
Professor Liu Gan, chairman of Saikang Jiaoan, introduced that "block chain" three-level traffic signal guidance is a completely independent technology achievement of Internet of Things with intellectual property rights. Facing the road traffic area or local area network, through systematic field research and demonstration, the establishment of a powerful data computing platform can be immediately effective in alleviating traffic congestion.