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Blind person navigation method based on mobile phone inertial navigation and RFID

A blind navigation and RFID tag technology, applied in the field of blind navigation based on mobile phone inertial navigation and RFID, can solve the problems of blind people's difficulty in autonomous travel and expensive auxiliary travel equipment, and achieve the effect of low price, small size and good portability

Inactive Publication Date: 2018-01-26
CHANGZHOU UNIV
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Problems solved by technology

[0004] Aiming at the current problems that blind people are difficult to travel autonomously and assisted travel equipment is expensive, this invention uses mobile phone inertial navigation combined with RFID tags to solve these problems for blind people
Solve the long-standing problem that has plagued the blind with autonomous travel

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  • Blind person navigation method based on mobile phone inertial navigation and RFID
  • Blind person navigation method based on mobile phone inertial navigation and RFID
  • Blind person navigation method based on mobile phone inertial navigation and RFID

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Embodiment Construction

[0051] In terms of RFID path layout: because it is for the blind to navigate, the navigation accuracy requirements are far greater than ordinary people's navigation accuracy requirements. The research shows that blind people can better distinguish the direction and distance within the range of 0.5m, so the precise requirement for blind navigation is within 0.5m. In order to increase the sensing and receiving area of ​​RFID, a double-row laying method is adopted, which not only increases the sensing area, but also provides convenience for subsequent precise navigation.

[0052] In terms of navigation and positioning: no matter whether the blind person is active indoors or outdoors, the mobile phone inertial navigation is used to estimate the position information, and the position information is calibrated when navigating to the RFID calibration point to obtain accurate position information.

[0053] specific plan:

[0054] 1. Firstly, lay RFID tags and route drawing storage fo...

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Abstract

The invention discloses a blind person navigation method based on mobile phone inertial navigation and RFID. According to the blind person navigation method based on mobile phone inertial navigation and RFID, a blind person route map is generated based on fixed type RFID tag group; double row laying method is adopted by RFID tags to enlarge the sensing area of RFID tag, reducing navigation error;only when reading of two RFID by a blind person using a navigation stick, navigation of the blind person to a relatively accurate position is realized, the RFID is set as a scaling point, when the blind person reaches the scaling point, recalibration of the position information is carried out so as to reduced navigation error of inertial navigation; combination of portable movable type RFID card readers with mobile phones is realized, so that blind person locating, navigation path planning, and navigation warning are realized. According to the blind person navigation method, combination of widely used intelligent mobile phones with the RFID tags is capable of realizing navigation of blind person free travelling, navigation accuracy is high, practicality is high, and cost is low.

Description

technical field [0001] The invention belongs to the field of navigation services, in particular to a navigation method for blind people based on mobile phone inertial navigation and RFID. Background technique [0002] According to the World Health Organization, at the end of 2012, the number of blind people in China was 9.382 million, and about 450,000 people go blind in China every year. According to this momentum, the number of blind people may have exceeded 11 million. By 2020, the number of blind people in China is expected to double. Nowadays, although the living standard of the blind has been greatly improved, when the blind try to go out of the house, there are still various obstacles and difficulties. The lack of vision makes them lose a major channel to obtain external information, and At the same time, I lost the confidence and courage to explore the outside world. With the continuous development of science and technology, more and more navigation devices are used...

Claims

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Application Information

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IPC IPC(8): G01C21/34G01C21/30
Inventor 郇战陈学杰朱乾龙甘安安
Owner CHANGZHOU UNIV
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