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Region positioning system

An area positioning and constant technology, applied to instruments, navigation through speed/acceleration measurement, computer components, etc., can solve the problems of high price, positioning accuracy easily disturbed, uncontrollable, etc.

Inactive Publication Date: 2012-05-16
SHANGHAI SHENGPAY E PAYMENT SERVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The theoretical accuracy of the RFID positioning system can reach 10cm (this is related to the signal coverage distance, the farther the distance, the worse the accuracy), but in practical applications, the positioning accuracy of the RFID system is also uncontrollable because it is susceptible to interference
[0005] WIFI (Wireless Fidelity) positioning technology locates by locating the geographical location of the WIFI wireless hotspot received by the terminal. It is only applicable to regional positioning and cannot calculate the coordinates
[0006] Ultra Wideband (UWB) positioning technology, the accuracy can reach 15 ~ 30cm, but the price is very high, currently only used in special fields such as industrial and mining, and cannot be applied to ordinary civilian fields such as the personal consumer goods market and the interactive entertainment industry

Method used

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Embodiment Construction

[0015] In order to have a more specific understanding of the technical content, characteristics and effects of the present invention, the present invention will be described in further detail below in conjunction with specific examples:

[0016] The invention uses the acceleration integration algorithm and the RFID area calibration technology in combination to realize the area positioning of the equipment.

[0017] Acceleration integral algorithm, also known as inertial navigation algorithm, is a commonly used method for calculating displacement. This method uses acceleration sensors to detect changes in the acceleration of equipment during movement in real time, and then uses the acceleration displacement formula ΔS=(V0+a×Δt / 2) The displacement of the equipment is calculated by the quadratic integral operation of ×Δt. However, certain errors will occur in all calculations, and with the increase of cumulative time, the cumulative error of displacement calculation will increase...

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PUM

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Abstract

The invention discloses a region positioning system, which comprises an acceleration transducer and a radio frequency identification (RFID) reader-writer which are integrated in equipment, and RFID transmitters arranged in a positioning region at intervals; the acceleration transducer is used for detecting the acceleration of the equipment; and the RFID transmitters and the RFID reader-writer are used for correcting the coordinates of the equipment. The region positioning system is low in price, and can ensure a certain positioning precision. When the system is used for positioning the equipment, the displacement of the equipment is calculated in real time by using an acceleration integral algorithm, and the current coordinates of the equipment are calibrated by using an RFID region calibration technology once the equipment moves for certain distance, so that errors caused by calculation are eliminated and relatively accurate region positioning is realized.

Description

technical field [0001] The invention relates to an area positioning system. Background technique [0002] Positioning is to use information technology to tell users the location information of an object. At present, there are mainly the following common positioning technologies: [0003] Global Positioning System (GPS), which is the most professional positioning system, has an accuracy of 10 to 25 meters (civilian use), but its accuracy is subject to the environment, and it is easily interfered indoors or under sheltered conditions. In addition, GPS The system is relatively complicated, and the positioning can only be done with the cooperation of vector maps, and the production cost of vector maps is very high, which makes the price of the whole system very high. [0004] Radio Frequency Identification (RFID) positioning system is suitable for positioning in specific areas. For example, RFID tag readers are placed in specific places in parking lots, ski resorts and other a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K17/00G01C21/10
Inventor 严海斌
Owner SHANGHAI SHENGPAY E PAYMENT SERVICE CO LTD