Auxiliary positioning system for visually impaired people to pass through pedestrian crosswalk

Abstract

The utility model discloses an auxiliary positioning system for visually impaired people to pass through a pedestrian crosswalk, which is provided with a cloud platform, an intelligent auxiliary positioning base station and an intelligent mobile phone, and the intelligent auxiliary positioning base station determines the relative position and distance between the intelligent auxiliary positioning base station and the base station through Bluetooth signals sent by the intelligent mobile phone. The position information of the intelligent mobile phone is transmitted to the intelligent mobile phone, the intelligent mobile phone obtains the position information and then obtains the passing route and direction information through the map software, the visual impaired person can be guided to pass through the pedestrian crosswalk through the guiding sound emitted by the intelligent mobile phone, and the technical problems that the visual impaired person is difficult to go out and inconvenient to pass through the pedestrian crosswalk are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of travel assistance for visually impaired persons, in particular to an auxiliary positioning system for visually impaired persons to pass through a crosswalk. Background Art

[0002] At present, there are about 18 million visually impaired people in China, accounting for 1.2% of the total population of my country. Although there is such a large group of visually impaired people, we rarely meet them in real life. For the visually impaired, it is not that they do not like to go out, but that the external travel environment is not friendly to them. Too many travel obstacles restrict their willingness to go out.

[0003] Accurate location services can provide great help for the travel of visually impaired people. In urban areas, due to the influence of the geographical environment, the positioning error of traditional satellite positioning will be large, which affects the travel experience of visually impaired people. Pedestrian crossings are a common scene in urban travel environments. How to safely cross pedestrian crossings is a challenge for visually impaired people. Due to visual defects, visually impaired people cannot see the status of traffic lights. At present, the signal lights of pedestrian crossings are equipped with street audio prompt devices to provide visually impaired people with street crossing sound guidance and bring convenience to the travel of visually impaired people. However, at complex intersections, there are multiple prompt devices broadcasting at the same time, which still brings troubles to the travel of visually impaired people. If it is possible to combine accurate location information to provide street crossing guidance services for visually impaired people, it will greatly improve the travel environment of visually impaired people and enable visually impaired people to cross pedestrian crossings independently. Utility Model Content

[0004] The utility model aims to provide an auxiliary positioning system for visually impaired persons passing through a crosswalk, and aims to solve the technical problem that it is inconvenient for visually impaired persons to pass through the crosswalk independently.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides an auxiliary positioning system for visually impaired people to pass through a pedestrian crossing, comprising a street crossing audio prompt device, a cloud platform, an intelligent auxiliary positioning base station and a smart phone; the street crossing audio prompt device is arranged on a pedestrian crossing signal light, the intelligent auxiliary positioning base station is arranged inside the street crossing audio prompt device, and the smart phone is in the hands of the visually impaired person; the cloud platform is wirelessly connected to the intelligent auxiliary positioning base station and the smart phone respectively, and the intelligent auxiliary positioning base station is wirelessly connected to the smart phone; wherein the cloud platform comprises a cloud control host, a traffic light information database, and a cloud map database, and the cloud platform is used for sending reference position information to the intelligent auxiliary positioning base station; the smart phone is used for communicating with the intelligent auxiliary positioning base station, and calculating position information as a wireless beacon; the intelligent auxiliary positioning base station comprises a low-power Bluetooth communication module, an antenna array and an embedded processor.

[0007] Preferably, the intelligent auxiliary positioning base station is wirelessly connected to the cloud control host, the traffic light information database, and the cloud map database respectively.

[0008] Preferably, the smart phone is wirelessly connected to the cloud control host, the traffic light information database, and the cloud map database respectively to obtain cloud data.

[0009] Preferably, the embedded processor is connected to the low-power Bluetooth communication module, and the antenna array is connected to the low-power Bluetooth communication module.

[0010] Preferably, the intelligent assisted positioning base station is wirelessly connected to the smartphone via a low-power Bluetooth communication module.

[0011] Preferably, the embedded processor also includes a memory and an operator, the memory is used to record changes in phase data, the operator analyzes and calculates to determine the exact position of the smartphone based on relative distance, direction and reference position, and transmits the position data to the low-power Bluetooth communication module.

[0012] The beneficial effects of the utility model are embodied in: the utility model provides an auxiliary positioning system for visually impaired people to pass through crosswalks, which is equipped with a cloud platform, an intelligent auxiliary positioning base station and a smart phone. The intelligent auxiliary positioning base station determines its relative position and distance with the base station through the Bluetooth signal emitted by the smart phone, and then transmits the location information of the smart phone to the smart phone. After the smart phone obtains the location information, it uses the map software to obtain the route and direction information. The guiding sound emitted by the smart phone can guide the visually impaired people to pass through the crosswalk, which solves the technical problems of visually impaired people's difficulty in traveling and inconvenience in passing through crosswalks.

[0013] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The main purpose and other advantages of the utility model can be realized and obtained by the solutions particularly pointed out in the description. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0015] Figure 1 It is a schematic diagram of the utility model.

[0016] Figure 2 It is a connection relationship diagram of various parts of the utility model.

[0017] Figure numerals: 1-street crossing audio prompt device, 2-cloud platform, 3-smartphone, 4-pedestrian crossing signal light, 5-visually impaired person. DETAILED DESCRIPTION

[0018] The technical solution of the present invention is described in detail below through embodiments. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solution of the present invention, but cannot be construed as limiting the technical solution of the present invention.

[0019] Reference Figure 1-2 In this embodiment, the utility model provides an auxiliary positioning system for visually impaired people to pass through a crosswalk, including a street crossing audio prompt device 1, a cloud platform 2, an intelligent auxiliary positioning base station and a smart phone 3; wherein the street crossing audio prompt device 1 is arranged on a pedestrian crossing signal light 4, the intelligent auxiliary positioning base station is arranged inside the street crossing audio prompt device 1, and the smart phone 3 is in the hands of a visually impaired person 5; the cloud platform 2 includes a cloud control host, a traffic light information database, and a cloud map database; the cloud platform 2 is wirelessly connected to the intelligent auxiliary positioning base station and the smart phone 3 respectively, and the intelligent auxiliary positioning base station is wirelessly connected to the smart phone 3, wherein the intelligent auxiliary positioning base station is wirelessly connected to the cloud control host, the traffic light information database, and the cloud map database respectively, and the smart phone 3 is wirelessly connected to the cloud control host, the traffic light information database, and the cloud map database respectively. The light information database and the cloud map database are wirelessly connected to obtain cloud data; the intelligent assisted positioning base station includes a low-power Bluetooth communication module, an antenna array and an embedded processor, the embedded processor is connected to the low-power Bluetooth communication module, the antenna array is connected to the low-power Bluetooth communication module, and the intelligent assisted positioning base station is wirelessly connected to the smartphone 3 through the low-power Bluetooth communication module; the embedded processor also includes a memory and an operator, the memory is used to record the changes in phase data, the operator analyzes and calculates the accurate position of the smartphone 3 based on the relative distance, direction and reference position, and transmits the position data to the low-power Bluetooth communication module; the cloud platform 2 is used to send reference position information to the intelligent assisted positioning base station, and the smartphone 3 is used to communicate with the intelligent assisted positioning base station and measure position information as a wireless beacon.

[0020] Furthermore, in this embodiment, the working principle of the utility model is as follows: first, the current position of the visually impaired person 5 is obtained through the smart phone 3, and the information of the surrounding street crossing audio prompt device 1 is requested from the cloud platform 2. When it is confirmed that the position is in the surrounding area of ​​the crosswalk and the signal light has been installed with the information of the surrounding street crossing audio prompt device 1, the smart phone 3 starts broadcasting the Bluetooth signal; the intelligent auxiliary positioning base station uses the built-in antenna array to receive the Bluetooth broadcast signal of the smart phone 3. The signal will produce a phase difference due to the different reception distances of the array antenna, and then calculate the distance and direction of the signal relative to the base station; the intelligent auxiliary positioning base station calculates the accurate position of the smart phone 3 based on the position of the base station, and then transmits the position information to the smart phone 3 through Bluetooth wireless communication; after the smart phone 3 obtains the accurate position, it uses the map software to obtain the route and direction information from the cloud, and can guide the visually impaired person 5 to cross the crosswalk through voice.

[0021] The above description is only a preferred specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that a technician familiar with the technical field thinks of within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. An auxiliary positioning system for visually impaired people passing through a crosswalk, characterized in that: It includes a street crossing sound prompt device (1), a cloud platform (2), an intelligent auxiliary positioning base station and a smart phone (3); The street crossing audio prompt device (1) is arranged on a pedestrian crossing signal light (4), the intelligent auxiliary positioning base station is arranged inside the street crossing audio prompt device (1), and the smart phone (3) is in the hands of a visually impaired person (5); the cloud platform (2) is wirelessly connected to the intelligent auxiliary positioning base station and the smart phone (3) respectively, and the intelligent auxiliary positioning base station and the smart phone (3) are wirelessly connected; The cloud platform (2) includes a cloud control host, a traffic light information database, and a cloud map database. The cloud platform (2) is used to send reference position information to the intelligent auxiliary positioning base station. The smart phone (3) is used to communicate with the intelligent auxiliary positioning base station and calculate the position information as a wireless beacon. The intelligent auxiliary positioning base station includes a low-power Bluetooth communication module, an antenna array, and an embedded processor.

2. The auxiliary positioning system for visually impaired people passing through a crosswalk as claimed in claim 1, characterized in that: The intelligent auxiliary positioning base station is wirelessly connected to the cloud control host, the traffic light information database, and the cloud map database.

3. The auxiliary positioning system for visually impaired persons passing through a crosswalk as claimed in claim 1, characterized in that: The smart phone (3) is wirelessly connected to the cloud control host, the traffic light information database, and the cloud map database respectively, for obtaining cloud data.

4. The auxiliary positioning system for visually impaired persons passing through a crosswalk as claimed in claim 1, characterized in that: The embedded processor is connected to the low-power Bluetooth communication module, and the antenna array is connected to the low-power Bluetooth communication module.

5. The auxiliary positioning system for visually impaired persons passing through a crosswalk as claimed in claim 4, characterized in that: The intelligent auxiliary positioning base station is wirelessly connected to the smart phone (3) via a low-power Bluetooth communication module.

6. The auxiliary positioning system for visually impaired persons passing through a crosswalk as claimed in claim 1, characterized in that: The embedded processor also includes a memory and an operator. The memory is used to record changes in phase data. The operator analyzes and calculates to determine the exact position of the smartphone (3) based on relative distance, direction and reference position, and transmits the position data to the low-power Bluetooth communication module.

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