Traffic information processing method based on vehicle mounted wireless sensor network

Abstract

The invention discloses a traffic road condition information processing method based on a vehicle-mounted wireless sensor network, which is characterized in that, firstly, a wireless communication network framework is established, which includes an information center and a vehicle-mounted wireless sensor network subsystem composed of a limited number of vehicle-mounted mobile nodes and an information release subsystem based on the broadcast network; the information center is fixed at a certain traffic hub in the urban area, and is the center of the wireless communication network; secondly, each vehicle-mounted mobile node conducts the communication through the vehicle-mounted wireless sensor network subsystem according to the order of the information center. Real-time road condition information collection and data fusion; then the real-time road condition information collected and data fused on each road section is reported to the information center through the vehicle-mounted wireless sensor network subsystem; finally, the information center sends the processed traffic road condition information and network control through the information release subsystem The signaling is issued to each vehicle-mounted mobile node; it is used for the driver to choose a route.

Description

technical field [0001] The invention relates to an information processing system based on a wireless communication network, in particular to a method for processing urban traffic road condition information based on a wireless sensor network composed of moving vehicles. Background technique [0002] With the rapid development of the economy and the acceleration of urbanization, traffic contradictions have become increasingly prominent, and traffic congestion has seriously affected people's normal life. Traffic traffic information is a kind of real-time road traffic information, which reflects the road traffic conditions and recent changes in a specific area. Traffic road condition information can not only provide a basis for traffic management departments to guide traffic, but also provide help for drivers and ordinary travelers to choose routes reasonably. Therefore, the collection, processing, reporting and release of traffic road condition information can help to solve th...

AI Technical Summary

Problems solved by technology

This kind of information transmission does not carry out screening and de-redundancy processing on network information, which leads to the problem that wrong data cannot be eliminated in the network, and the network data transmission volume is huge, and the network information center has a high processing pressure.

On the other hand, the existing data transmission methods of vehicle-mounted wireless sensor networks often require the support of roadside fixed sensor nodes.

A large number of roadside fixed nodes make it difficult to set up the network, and maintaining roadside fixed sensor nodes throughout the city also greatly increases the operating costs of the network

In terms of traffic information release, the existing vehicle-mounted wireless sensor network either does not involve the traffic information release function or uses the data collection and reporting network for downlink data transmission of the city's traffic information, which leads to uncertain network service objects and complicated working methods. The information release method is single, and the timeliness of traffic and road condition information reporting and the user coverage of downlink release are difficult to guarantee

Images