Traffic sensor networking method based on Bluetooth communication

A sensor group and bluetooth communication technology, applied in the traffic control system of road vehicles, wireless communication, traffic control system, etc., can solve the problems of low transmission rate of ZigBee technology, not being widely used, and high hardware cost, so as to avoid urban Effects of traffic congestion, low cost, and low standby power consumption

Active Publication Date: 2017-02-01
NANJING UNIV OF SCI & TECH +1
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AI Technical Summary

Problems solved by technology

Among them, ZigBee technology has a low transmission rate and is mainly used to transmit control information. The data volume is relatively small, the hardware cost is high, and its network layer research has not been in-depth, and has not been applied on a large scale; WiFi technology is more suitable for indoor places. less secure

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  • Traffic sensor networking method based on Bluetooth communication
  • Traffic sensor networking method based on Bluetooth communication

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Embodiment 1

[0039] Such as figure 1As shown, Bluetooth adopts a flexible networking method without a base station, and one Bluetooth device can be connected to seven other Bluetooth devices at the same time. A piconet is a tiny network connected by Bluetooth technology. A piconet can refer to two connected devices, such as a laptop computer and a mobile phone, or it can be eight devices connected together. In a piconet, all devices are tuned in the same order and have the same permissions. When the piconet is initially built, one of the bluetooth devices is defined as the master device, and the other devices are slave devices. Therefore, there is only one master node and a maximum of 7 slave nodes in a piconet.

[0040] When a piconet is established, we can select several slave nodes in the piconet as master nodes to form their own next-level piconets. Moreover, we can select up to 6 slave nodes as the next-level master node, leaving 1 vacancy, so that during the network operation, a ...

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Abstract

The invention discloses a traffic sensor networking method based on Bluetooth communication. The method comprises the steps that a sensor node, a data transmission node and a gateway node are arranged on a road, wherein the nodes comprise Bluetooth communication modules; a gateway node and a set of sensor nodes are arranged on the road, wherein n groups of data transmission nodes are arranged between the gateway node and the sensor nodes of the road, and the gateway node is used as a root node; the root node is used to query the data transmission nodes in the own coverage to establish connection to form a root piconet; a slave node with the highest energy value is selected as the main node of a secondary piconet, and network diffusion is carried out to build the secondary piconet; a n+1-level piconet is built gradually, wherein slave nodes of the n+1-level piconet are the sensor nodes; a Bluetooth distributed network is finally formed; and vehicle information detected by the sensor nodes is sent to the gateway nodes through the network, and is finally transmitted to a server for processing. The traffic sensor networking method provided by the invention has the characteristics of low power consumption, low delay, extra-long communication distance, high data transmission security and the like.

Description

technical field [0001] The invention relates to the technical field of intelligent traffic communication networking, in particular to a traffic sensor networking method based on bluetooth communication. Background technique [0002] With the development of cities and the construction of roads, urban traffic congestion is getting worse day by day. The rapid development of the automobile industry has further aggravated the pressure on urban traffic, and intelligent transportation systems have emerged as the times require. The intelligent transportation system is a real-time, accurate and efficient comprehensive transportation and management system established by effectively integrating advanced information technology, data communication transmission technology, and electronic sensing technology into the entire transportation management system. [0003] The idea of ​​integrating wireless sensor networks into intelligent transportation systems is gradually formed with the devel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/01H04W4/00H04W84/18
CPCG08G1/012H04W4/80H04W84/18Y02D30/70
Inventor 戚湧李建妹李千目王印海
Owner NANJING UNIV OF SCI & TECH
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