Wearable indoor positioning system based on radio frequency identification technology and method thereof
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A radio frequency identification technology and indoor positioning technology, applied in the field of wireless indoor positioning, can solve the problems of high cost and unfavorable promotion of active RFID products, and achieve the effect of reducing infrastructure investment, low cost and real-time positioning
Inactive Publication Date: 2010-06-23
INST OF AUTOMATION CHINESE ACAD OF SCI
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However, the cost of active RFID products is relatively high, which is not conducive to promotion
Passive RFID products, especially UHF frequency band RFID products with a working frequency of 840-960 MHz, usually have a reading distance of 1 meter to 10 meters according to the size of the transmission power. The writer is used as the transmitter infrastructure, and few people use it
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[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0033] The radio frequency identification technology-based wearable indoor positioning system and method provided by the present invention are realized based on radio frequency technology (Radio Frequency Identification, RFID). RFID technology is a non-contact automatic identification technology realized by radio frequency technology. RFID electronic tags have fast reading and writing speeds, large storage capacity, and can penetrate non-conductive materials. At the same time, passive RFID electronic tags can be read in batches at long distances (several meters to 10 meters) under non-line-of-sight, which has become a solution One of the effective schemes for indoor localization problems.
[0034] Such as figure 1 as sh...
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Abstract
The invention discloses a wearable indoor positioning system based on a radio frequency identification technology and a method thereof, wherein the method comprises: using an RFID electronic tag as a receiving end infrastructure and burying on the ground of a known environment, establishing the one-to-one mapping between the ID mark of each RFID electronic tag and the coordinate information of the position where the RFID electronic tag is; sewing a transmitting end reader-writer and a reader-writer antenna on the clothes of a user; firstly reading a mapping relationship list of the ID mark of the RFID electronic tags in the known environment and geographic information stored in a tag user area recorded on a map after the user enters the known environment, reading the ID mark information of the RFID electronic tag in the known environment in the actuating range of the reader-writer antenna by using a fixed sampling period, calculating the position where the user is at present in real time, and displaying the position on the map of a display unit so as to provide the solution for indoor positioning with real-time response, high precision and low cost for the user.
Description
technical field [0001] The invention relates to the technical field of wireless indoor positioning, in particular to a wearable indoor positioning system and method based on radio frequency identification technology. Background technique [0002] With the development of wireless communication technology, people's demand for positioning and navigation is increasing, especially in complex indoor environments, such as airport halls, exhibition halls, warehouses, supermarkets, libraries, parks, underground parking lots, mines, etc. In the process, it is necessary to use mobile terminals to provide location information for personnel, facilities and objects. Therefore, many solutions for indoor positioning technology have been proposed, including A-GPS positioning technology, ultrasonic positioning technology, Bluetooth technology, infrared technology, ultra-wideband technology, wireless local area network, light tracking positioning technology, image analysis, beacon positioning ...
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