An indoor positioning and navigation method and system suitable for the visually impaired
An indoor positioning and navigation method technology, applied in navigation, surveying and mapping and navigation, navigation computing tools, etc., can solve the problems of being unable to live independently and not being able to meet the daily needs of the visually impaired, and achieve a good auxiliary effect
Active Publication Date: 2019-05-07
SHENZHEN UNIV
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Problems solved by technology
This prevents them from living independently, or even walking safely
Although there are many navigation products for visually impaired people on the market, they have great shortcomings and cannot meet the daily needs of visually impaired people.
Method used
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Embodiment Construction
[0030] In the present invention, there are two types of users: providers and general users, and general users include visually impaired users.
[0031] The provider uses a handheld device to scan the interior of the building, obtains the corresponding two-dimensional layout map of the building and associates it with the MAC addresses of one or more WIFI routers of the building, and then operates the handheld device to connect the two The dimensional layout diagram and the associated MAC address are sent to the cloud server through the public network for storage.
[0032] like figure 1 As shown, the handheld device includes a mobile lidar system, WIFI module and 4G mobile communication module. The handheld device uses the mobile lidar to collect the internal structure data of the building, and uses the real-time positioning and layout reconstruction technology to obtain the indoor structure of the building. Two-dimensional layout diagram, and associate it with one or more WIFI...
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Provided are an indoor positioning and navigating method and system suitable for a person with visual impairment. A user terminal executes the following steps: an environment data receiving step for receiving environment data collected by an environment detection unit; a two-dimensional layout diagram request sending step sending a request to a server for requesting the provision of a two-dimensional layout diagram of a building; a positioning step calculating the current position of a user by means of the two-dimensional layout diagram in conjunction with movement data of the user; and a navigating step calculating an optimal path by using a path planning algorithm in conjunction with the current position of the user and a destination, performing voice navigation for the user, and during the process of voice navigation, receiving, when the environment detection unit detects an obstacle, obstacle data information sent by the environment detection unit, and prompting the user to avoid the obstacle by way of voice. The beneficial effects of the present invention are that the present invention is suitable for various user groups, particularly playing a good assistance effect for people with visual impairment, and has value for promotion and application.
Description
technical field [0001] The invention relates to the technical field of indoor positioning and navigation, in particular to an indoor positioning and navigation method and system suitable for visually impaired persons. Background technique [0002] At present, the number of visually impaired people in my country has exceeded 10 million, and this number is still increasing. There are so many visually impaired people, why do we see so few in our daily life? Because they really dare not go out. Almost all public facilities are not friendly to the visually impaired. Due to the unfriendly facilities and traffic, it can be said that it is difficult for the visually impaired to walk without someone to accompany them. Therefore, when they go out, they need someone to take them with them. This adds a lot of cost to going out, not just money cost. We should not only ask the government to continue to introduce more comprehensive policies and regulations, or to manufacture more prod...
Claims
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IPC IPC(8): G01C21/36G01C21/20
CPCG01C21/206G01C21/3608G01C21/3629
Inventor 伍楷舜周学进林佳伟邹永攀
Owner SHENZHEN UNIV