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Sensor-network-based geomagnetic induction vehicle clock synchronization technology

A geomagnetic induction and clock synchronization technology, applied in the directions of synchronization devices, network topology, electrical components, etc., can solve problems such as difficulty in practicality, achieve the effect of convenient intelligent control and management, and reduce manual intervention

Active Publication Date: 2015-01-21
SUQIAN COLLEGE
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Problems solved by technology

Another example, Hyunhak Kim's cluster-based synchronization algorithm, first divides the system into high-performance and low-performance nodes according to different performances, then builds spanning trees for different types of nodes, and then synchronizes the two types of spanning trees respectively , this method can certainly improve the accuracy of synchronization, but it is more difficult to achieve from a practical point of view

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  • Sensor-network-based geomagnetic induction vehicle clock synchronization technology
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  • Sensor-network-based geomagnetic induction vehicle clock synchronization technology

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Embodiment Construction

[0017] The present invention will be further elaborated below in conjunction with the accompanying drawings.

[0018] like figure 1 As shown, it consists of ZigBee sensor network, gateway, mobile base station and Internet. Although different smart transportation applications have different requirements for the number of sensor network points, the deployment of sensor network nodes is basically the same. When a vehicle enters the geomagnetic induction area, the detector (wireless sensing node) after the clock synchronization will exchange the collected vehicle information between adjacent nodes through the wireless network carrier, and finally obtain the vehicle's speed, Length (i.e. vehicle type) and other information are transmitted to the road traffic control center through the sensor network, mobile network and Internet.

[0019] like figure 2 As shown, the three nodes a, b, and c are geomagnetic sensor nodes, and the distance between them is generally about half of the...

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Abstract

The invention provides a sensor-network-based geomagnetic induction vehicle clock synchronization technology. A mobile base station, the Internet, a gateway and a ZigBee sensor network are applied to the technology. The technology includes the steps that (1) geomagnetic sensors are deployed, wherein the geomagnetic sensors are deployed equidistantly on all lanes; (2) a topological structure is established at the stage; (3) synchronization is achieved; (4) speeds and lengths of passing vehicles are calculated. The technology has the advantages that by means of the synchronization technology, the speeds of the traveling vehicles can be measured, and information of the overspeed vehicles can be fed back to a foreground in time, so that intelligent control and management of the vehicles are facilitated; meanwhile, full preparation is made for subsequent work, for example, if an illegal vehicle needs to be photographed, related information can be transmitted to a corresponding node for processing, and therefore manual intervention is greatly relieved.

Description

technical field [0001] The invention relates to an intelligent control system, in particular to an intelligent street lamp control system based on a GPRS mobile network and a ZigBee wireless sensor network, which belongs to the fields of mobile networks, wireless networks and embedded systems. Background technique [0002] With the extensive application of wireless networks in various fields, wireless network technology has been promoted and applied to smart street lights. At home and abroad, there have been some research and development work on wireless vehicle detectors based on geomagnetic induction. For example, the research results of Su Donghai and others can realize whether a vehicle passes by, the direction of travel, and can estimate the speed of the vehicle, which has certain practicality. However, since the design scheme assumes that the speed of the vehicle passing the detector is constant (that is, a constant speed), and in the actual traffic scene, the vehicle ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00H04W84/18
CPCH04W56/0015H04W84/18
Inventor 王志超汤亮李敏郑浩然
Owner SUQIAN COLLEGE
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