Device and method for performing low-power consumption indoor locating by utilizing Zigbee wireless interfaces
A wireless interface and indoor positioning technology, applied in the direction of wireless communication, energy consumption reduction, advanced technology, etc., can solve the problems of high power consumption, affecting user experience, etc., and achieve the effect of low power consumption
Inactive Publication Date: 2013-04-17
BEIHANG UNIV
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AI Technical Summary
Problems solved by technology
However, when applied to mobile devices, existing Wi-Fi positioning systems based on fingerprints have the following disadvantages: in order to continuously calculate the location of mobile users, Wi-Fi devices must constantly scan the surrounding APs, resulting in higher performance. consumption
[0006] The power limitation of mobile devices has become a bottleneck in the development of mobile devices, which greatly affects the user experience
Method used
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[0032] specific implementation
[0033] The content of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0034] Such as figure 1 As shown, the framework of the device for low-power indoor positioning in the present invention. The positioning device of the present invention is referred to as ZiFind for short. Such as figure 1 As shown, ZiFind consists of three main parts: client client, positioning server Server and auxiliary positioning device Mapper.
[0035] The client is installed on the mobile device to be positioned, and the client includes a Wi-Fi wireless interface 11, a Zigbee wireless interface 12 and a digital signal processing module 13. Several Mappers are arranged in the building, and each Mapper has a Wi-Fi wireless interface 11. After the arrangement is completed, all Mappers can cover the wireless signals of the entire indoor positioning area through the Wi-Fi wireless interface....
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The invention provides a device and a method for performing low-power consumption indoor locating by utilizing Zigbee wireless interfaces, and the device and the method are designed for complex buildings under a wireless environment. Mobile equipment is provided with a client side which is provided with a Wi-Fi (Wireless Fidelity) wireless interface, one Zigbee wireless interface and a digital signal processing module; multiple Mappers with the Wi-Fi wireless interfaces are distributed in the building, and a locating server is used for performing processing and location on AP (Access Point) signals collected by the Zigbee wireless interfaces and data collected by the Mappers. According to the method, the digital signal processer module is used for obtaining the AP strength; and an RSS sequence alignment module utilizes a sequence with an AP marker to mark an RSS sequence collected by the client side, and obtains fingerprints at a position in which the mobile equipment with the AP marker is located, so that the locating of the mobile equipment is further realized. The device can response to a user request rapidly at a power consumption which is above 50% less than that of a traditional method, and optimal indoor locating service can be provided for the user.
Description
technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to a device and method for utilizing Wi-Fi infrastructure and using a Zigbee wireless interface to perform indoor positioning with low power consumption. Background technique [0002] In recent years, location-based services (Loeation Based Services, LBSs) and a series of applications brought about by it have received constant attention from the industry. Location-based services have been continuously developed in the fields of emergency assistance, medical care, and personal business. For example, a series of navigation applications based on platforms such as smart terminal iPhone, iPAD, BlackBerry, and Android are constantly pouring into the market, and are increasingly emerging. Broad business prospects and huge market value. In all these location-based service applications, accurate and real-time positioning technology is the fundamental and key to realize the ...
Claims
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Login to View More IPC IPC(8): H04W64/00
CPCY02D30/70
Inventor 牛建伟高宇航刘闯童超
Owner BEIHANG UNIV