Dynamic weighting evolution positioning system and dynamic weighting evolution positioning method based on received signal strength indicator (RSSI) of two nodes

A technology of dynamic weighting and positioning system, applied in positioning, radio wave measurement system, measurement device, etc., can solve the problems of poor positioning accuracy and high computational complexity, and achieve the effect of high-precision positioning

Active Publication Date: 2016-02-03
TONGJI UNIV
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Problems solved by technology

[0007] In view of the existing indoor positioning scheme based on wireless signal strength, which has poor positioning accuracy and high computational complexity, the purpose of this patent is to provide a dynamic weighted evolutionary positioning scheme based on 2-point RSSI to improve the accuracy of indoor positioning , and reduce the computational complexity

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  • Dynamic weighting evolution positioning system and dynamic weighting evolution positioning method based on received signal strength indicator (RSSI) of two nodes
  • Dynamic weighting evolution positioning system and dynamic weighting evolution positioning method based on received signal strength indicator (RSSI) of two nodes
  • Dynamic weighting evolution positioning system and dynamic weighting evolution positioning method based on received signal strength indicator (RSSI) of two nodes

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[0038] In order to make the technical means, creative features, goals and effects achieved by this patent easy to understand, the following will further elaborate this patent with specific illustrations.

[0039] The positioning system provided in this example is used to realize fast and accurate indoor positioning. During a positioning process, the node to be positioned only uses the signal strength values ​​transmitted by two wireless signal transmitting nodes (the two wireless signal transmitting nodes can be The two wireless signal transmitting nodes closest to the bit node), and perform real-time position estimation based on the running dynamic weighted evolutionary positioning method.

[0040] At the same time, during the positioning process, there is no information interaction process between the corresponding node to be positioned and the wireless signal transmitting node (ie, the reference node).

[0041] see figure 1 , which shows the system block diagram of the pos...

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Abstract

The invention discloses a dynamic weighting evolution positioning system and a dynamic weighting evolution positioning method based on received signal strength indicator (RSSI) of two nodes. According to the dynamic weighting evolution positioning system and the dynamic weighting evolution positioning method, real-time position estimation is performed through acquiring position numbers of two wireless signal transmission nodes based on the dynamic weighting evolution positioning method. A positioning solution which is provided according to the invention is a one-dimensional dynamic weighting evolution positioning solution based on RSSI, wherein an information exchange between a to-be-positioned node and a reference node is not required. Compared with a traditional positioning technique based on RSSI, the positioning solution is advantageous in that quick positioning with advantages of high efficiency and high precision can be realized.

Description

technical field [0001] This patent relates to indoor positioning technology, in particular to positioning technology based on wireless sensor networks. Background technique [0002] In the era of mobile Internet, people spend a lot of time in the indoor environment (about 80%), and people's daily life is increasingly dependent on the convenience brought by location-based services, making it imminent to solve the problem of indoor positioning. [0003] Over the years, after a lot of research by experts and scholars at home and abroad, the technologies that can be used for indoor positioning mainly include infrared technology (Infrared), Bluetooth technology (Bluetooth), radio frequency technology (RFID), Zigbee, wireless local area network (Wi-Fi ), light (Light) and ultra-wideband (UWB), etc. In order to obtain better positioning accuracy, positioning schemes based on ranging and non-ranging have emerged. Moreover, compared with the non-ranging positioning scheme, the rang...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/10G01S5/02
CPCG01S5/021G01S5/0273G01S5/10
Inventor 苏伟灯刘儿兀
Owner TONGJI UNIV
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