WO2022092359A1

WO2022092359A1 - Gps navigation system for blind person using rfid and electronic compass

Info

Publication number: WO2022092359A1
Application number: PCT/KR2020/014963
Authority: WO
Inventors: 이지원
Original assignee: 이지원
Priority date: 2020-10-28
Filing date: 2020-10-29
Publication date: 2022-05-05
Also published as: KR20220056739A

Abstract

The present invention relates to a GPS navigation system that is for a blind person and uses RFID and an electronic compass, the purpose of the invention being to guide the blind person to the person's intended destination without the help of another person. To this end, the present invention comprises: an RFID tag which includes an RFID code; an RFID reader which is installed in the user's cane and receives a unique ID of the RFID tag; a database which stores map data, the unique ID of the RFID tag, a GPS coordinate value corresponding to the unique ID, and surrounding location information files; a transmission and reception unit which transmits the RFID code to the database, and receives map route data, a GPS value of the RFID tag on the route, and the surrounding location information files; a storage unit which stores downloaded data and files; a control unit which checks whether the user deviates from the route, determines the distance and direction to a nearby RFID tag, uses the electronic compass (a geomagnetic sensor) to determine where the user is currently facing, corrects the heading of the user by comparing the heading with the map route data, and notifies the user of the surrounding location information; an audio processing unit which processes voice information; and a GPS which is used for determining the location of the RFID tag and whether the user is moving along a given route. The present invention includes the functions of: correcting errors in the GPS value by using the RFID; correcting bearing (east, west, south, and north) estimation errors of the GPS by using the electronic compass (the geomagnetic sensor); and guiding the RFID reader, which is attached to the user's cane, as close as possible to the RFID tag in order to notify the user of the surrounding location information.

Description

GPS navigation system for the blind using RFID and electronic compass

The present invention relates to a GPS navigation system using RFID and an electronic compass that provides a GPS navigation system to the blind using RFID and an electronic compass. The present invention relates to a GPS navigation system for the blind using RFID and an electronic compass that calibrates and provides guidance from a user's point of view using an electronic compass, and a method therefor.

RFID (Radio Frequency Identification) is fused so that the GPS navigation function, which is used by many people in vehicles or ships, can be used by the blind using walking, the accuracy of the GPS (Global Positioning System) is increased, and the error is larger than when using a vehicle or a ship It is a GPS navigation system for the blind using RFID and an electronic compass that provides directions from the user's point of view using an electronic compass for the blind who have difficulty in determining the direction they are heading.

In general, blind people have to memorize routes to get to their destination. However, if you get lost along the way or forget how to get to your destination, it is almost impossible to get to your destination without the help of others. In addition, when the surrounding buildings or roads are changed due to various causes, the route to the destination is not consistent, which is inconvenient.

In addition, it is difficult for the blind to know their current location and direction (east, west, north, south) because they cannot see the map differently from ordinary people.

In addition, the direction recognition using GPS is not a problem in recognizing the location even if there is some error because the moving speed is fast in the case of a vehicle. There is a limit to the decrease in accuracy.

Accordingly, the present invention has been proposed to solve the above problems, and when the user deviates from the route when guiding the route, the present invention guides the user to the correct route. By correcting the GPS value of the falling user's location, it provides accurate directions so that the blind can easily reach their destination. In addition, when the RFID reader attached to the walking stick approaches the RFID tag, the purpose is to provide information on the surrounding location using RFID and an electronic compass so that local information can be acquired naturally.

In addition, by using the compass to transform the information in east, west, south and north according to the direction the user is facing, the user does not have to continuously check the direction he is facing (east, west, south, north), and the user can determine which It is easy to see if there is

As described above, the present invention guides the blind person to the destination they want to go, corrects when they deviate from the route, provides accurate route guidance, and makes it easy to get to the destination and not to get lost without the help of others. You can go anywhere, anytime you want. In addition, by providing the user's front, back, left and right location information, it is possible to know what is around, so that the user can easily learn the local geography.

Moreover, it is difficult for the blind to acquire new surrounding information through maps, but by using RFID tags, natural and accurate information can be acquired in real life.

1 is a block diagram showing the configuration of a GPS navigation system for the blind using RFID and an electronic compass according to the present invention;

2 is a flowchart illustrating an operation procedure of a GPS navigation system for the blind using RFID and an electronic compass according to the present invention;

3 is a view showing an embodiment of a GPS navigation system for the blind using RFID and an electronic compass according to the present invention;

The present invention provides an RFID tag with a unique ID, an RFID reader installed on the user's wand and receiving the unique ID of the RFID tag, map data, and GPS values and surrounding location information files corresponding to the unique ID and unique ID of the RFID tag. A database that stores, a transceiver that transmits the RFID tag's unique ID to the database or receives map route data and GPS values and surrounding location information files of RFID tags on the route, a storage unit that stores downloaded data and files, and voice Audio processing unit that processes, checks whether the user has deviated from the route, determines the distance and direction to a nearby RFID tag, uses an electronic compass (geomagnetic sensor) to determine which direction the user is currently looking at, maps route data and the user It includes a control unit that compares and corrects the direction of movement and informs the user of the surrounding location information through an audio processing unit, and includes a GPS used to determine whether the user is moving along a given route and the location of the RFID tag, while the user's wand When the RFID reader installed in the RFID tag approaches the RFID tag, it includes a function to correct the GPS error and inform the user of the surrounding location information.

This system can use not only the navigation-only terminal 100 for the blind (hereinafter simply referred to as 'terminal'), but also a personal (mobile) terminal from which a navigation app for the blind has been downloaded.

The RFID tag 200 has a unique ID, and the database 210 stores the unique ID and GPS values and map data corresponding to the unique ID, and location information files around the east, west, south, and north.

The RFID reader 120 receives the unique ID from the RFID tag 200 and transmits the unique ID to the transceiver 220 using Bluetooth.

Transceiver 220 transmits the received unique ID to the database 210 and receives the GPS value corresponding to the unique ID from the database 210 and the surrounding location information file corresponding to the unique ID of the RFID tag 200, and the control unit forward to (230).

The control unit 230 calculates the distance and direction to the nearby RFID tag 200 by determining whether the user deviates from the route and the direction the user is heading using GPS, and uses the electronic compass to determine the direction the user is looking and the database 210 ) or (1) the map route data received from the storage unit 240 to determine which direction the user should go (left, right, front and rear) and (2) compare the surrounding location information files stored in the east, west, south, north and left and right and back and forth to transform the audio processing unit 250 ) through which voice guidance is provided.

Also, the audio processing unit 250 recognizes the user's voice when searching for a destination.

When the map route data and the surrounding location information file are received, the data may be received from the database 210 through the transceiver 220 , and the map route data and the surrounding location information file downloaded from the storage unit 240 may be stored.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing the configuration of a GPS navigation system for the blind using RFID and an electronic compass according to the present invention.

As shown, the GPS navigation system for the blind using RFID and an electronic compass according to the present invention is largely installed in various places with an RFID tag 200, a terminal 100, a database 210, and an RFID reader 120 installed on the user's wand. consists of

The terminal 100 includes a transceiver 220 , a control unit 230 , a storage unit 240 , and an audio processing unit 250 .

The terminal 100 of the present invention provides directions to the user and outputs location location information such as surrounding facilities and buildings.

In addition, the RFID tag 200 is installed in various places and stores a unique ID.

The database 210 stores map data, a unique ID of the RFID tag 200, a GPS value corresponding to the unique ID, and surrounding location information.

First, when a user searches for a destination by using the audio processing unit 250 , the transceiver 220 receives the map route data from the database 210 and the GPS value of the RFID tag 200 on the route and receives the RFID A peripheral location information file corresponding to the tag 200 may also be received.

The storage unit 240 stores the map route data and the surrounding location information file received from the transceiver 220 .

When the user deviates from the route when going to the destination using the navigation system for the blind, the GPS is used to inform the user of the correct route.

If there is an RFID tag 200 in the vicinity, the control unit 230 uses GPS to determine the distance and direction to the nearby RFID tag 200 and notifies the user through the audio processing unit 250 .

When the user approaches the RFID reader 120 to the RFID tag 200, the control unit 230 compares the GPS value of the RFID tag 200 with the currently measured GPS value of the user to correct the GPS value of the user's location, and the electronic compass to determine the direction of the user and transform the surrounding location information stored in the database 210 or the storage unit 240 based on the east, west, north, and south in accordance with the direction of the user left and right back and forth according to the user's direction according to the unique ID of the RFID tag 200, followed by an audio processing unit ( 250) is output.

Since the structure and operation method of the RFID tag 200 can be easily implemented by a person skilled in the art to which the invention pertains, a detailed description thereof will be omitted herein.

The control unit 230 uses GPS to determine whether the user deviated from the route and the distance and direction to the surrounding RFID tag 200 , and the direction the user is currently looking at and the map received from the database 210 or the storage unit 240 . The route data is compared to determine which direction the user should go (front, back, left, right), and the surrounding location information file received from the transceiver 220 is also delivered.

2 is a flowchart illustrating an operation procedure of a navigation system for the blind according to the present invention.

The navigation for the blind starts with running the terminal 100 first.

Next, when the user searches for a destination by using the audio processing unit 250, the transceiver 220 receives the map route data from the database 210 and the GPS value of the RFID tag 200 in the route, and receives the RFID tag ( 200) may also receive the surrounding location information file.

While the user goes to the destination, the controller 230 continuously checks whether the user deviates from the route using the GPS.

On the other hand, when the user deviates from the route on the way to the destination, the controller 230 notifies the user of the correct route through the audio processor 250 using GPS.

When the RFID tag 200 is nearby, the control unit 230 uses GPS and a compass to determine the distance and direction to the nearby RFID tag 200 and informs the user through the audio processing unit 250 .

When the RFID reader 120 is close to the RFID tag 200, the controller 230 compares the GPS value of the RFID tag 200 with the currently measured GPS value of the user to correct the GPS value of the user's location, and the RFID reader ( 120 receives the unique ID of the RFID tag 200 and transmits the received unique ID to the transceiver 220 through Bluetooth or the like.

The transceiver 220 may transmit the received unique ID to the database 210 , receive peripheral location information corresponding to the unique ID from the database 210 , and store the received information in the storage unit 240 .

The controller 230 uses the electronic compass to determine which direction the user is currently looking at, compares the map route data with the user's direction, and guides the user through the audio processing unit 250 . In addition, the surrounding location information stored in the storage unit 240 in the direction of the user is transformed back and forth, left and right, and outputted through the audio processing unit 250 .

How the GPS navigation system for the blind using RFID and electronic compass can be applied in practice is explained.

First, looking at an example in which navigation for the blind is applied to the street, the RFID tag 200 is installed on a floor, a building, a pole, etc., and a GPS navigation system for the blind using RFID and an electronic compass according to the present invention is provided to the blind person.

When there is a destination the user wants to go to, if the destination is searched using the audio processing unit 250, the database 210 receives map route data and the GPS value of the RFID tag on the route, and information about the surrounding location corresponding to the RFID tag You can also receive files. While the user goes to the destination, the controller 230 continuously determines whether the user deviates from the route using the GPS, and when the user deviates from the route, the controller 230 notifies the user of the correct route using the GPS using the audio processing unit 250 .

When there is an RFID tag 200 in the vicinity, the control unit 230 uses GPS to determine the distance and direction to the nearby RFID tag 200 and notifies the user through the audio processing unit 250 .

When the RFID reader 120 installed on the user's wand of the present invention approaches the RFID tag 200, the control unit 230 compares the GPS value of the RFID tag 200 with the currently measured GPS value of the user to determine the location of the user. After correcting the GPS value, the RFID reader 120 receives the unique ID of the RFID tag 200 and transmits it to the transceiver 220 using Bluetooth.

The transceiver 220 transmits the received unique ID to the database 210 to receive a peripheral location information file corresponding to the unique ID from the database 210 or the storage unit 240 .

The control unit 230 uses the electronic compass to determine which direction the user is currently looking at, compares the map route data with the direction of the user, and provides guidance to the user through the audio processing unit 250 . In addition, the surrounding location information stored in the east, west, south and north is transformed back, forth, left, and right according to the direction of the user, and outputted through the audio processing unit 250 .

3 is a view showing an embodiment according to the present invention.

The user's wand has an RFID reader 120 installed on the handle, and the RFID antenna is installed on the end of the wand (part facing the floor).

The RFID tag 200 may be installed on a floor, a pillar, a building, or the like.

In addition, the user can download the map route data and the surrounding location information file corresponding to the unique ID of the RFID tag 200 on the route before departure, and the downloaded data and file are stored in the storage unit 240 .

When the user brings the RFID reader 120 close to the RFID tag 200, the controller 230 compares the GPS value of the RFID tag 200 with the currently measured GPS value of the user to correct the GPS value of the user's location, A peripheral location information file may be imported from the database 210 or the storage unit 240 .

In addition, the RFID reader 120 can approach the RFID tag 200 , and the RFID antenna can also approach the RFID tag 200 to perform the same operation/function.

The present invention is not limited to the above-described embodiment, and the present invention can be implemented with various modifications within the scope permitted by the technical idea.

For example, the terminal according to the present invention is not a stand-alone device equipped with all of the transceiver, storage, control, and audio processing unit as in the above-described embodiment of the present invention, but downloads the app to a personal (portable) terminal and uses a walking stick for the blind It can also be implemented in the form of attaching a reader to the device and connecting it via Bluetooth, etc.

In general, install the app on a widely distributed personal cell phone, utilize the basic RFID reader, compass, and GPS reception function of the cell phone, and attach an RFID reader with Bluetooth function to communicate with the cell phone in addition to the walking stick for the blind. It will be an ideal form that is easy to use.

It can be applied to non-blind people using a reader instead of a walking stick at tourist destinations and factory tours. It is possible to provide accurate location values by installing RFID tags where precision is required for measurement errors of GPS.

In addition, if the function of the compass is applied to other fields, the user can provide easy-to-understand guidance.

Claims

RFID tag with a unique ID, an RFID reader installed on the user's wand and receiving the unique ID of the RFID tag, a database that stores map data and GPS values corresponding to the unique ID and unique ID of the RFID tag and surrounding location information files , a transceiver that transmits the unique ID of the RFID tag to the database and receives map route data and GPS values and surrounding location information files of the RFID tag in the route, a storage unit that stores downloaded data and files, and audio processing that processes voice The processing unit checks whether the user has deviated from the route, determines the distance and direction to the surrounding RFID tag, determines which direction the user is currently looking at, compares the map route data with the user's direction, and corrects it It includes a control unit that informs you back and forth, left and right, and a GPS used to determine whether the user is moving along a given route and the location of the RFID tag, while the user approaches the RFID reader or RFID antenna installed on the wand to the RFID tag , GPS navigation system for the blind using RFID and electronic compass, including the function of correcting the GPS value of the user's location and providing the user with information about the surrounding location.
The GPS navigation system for the blind using RFID and an electronic compass according to claim 1, wherein the GPS is used to check whether the user has deviated from the route, and when the user deviated from the route, the user is informed of the departure and the correct route using the GPS.
The method according to claim 1, wherein when the RFID reader approaches the RFID tag, it retrieves the surrounding location information from the database, uses an electronic compass to determine the direction the user is currently looking at, and uses the information on the surrounding location in the direction of east, west, south, north and south to the user's direction. A GPS navigation system for the blind using RFID and an electronic compass that transforms front, back, left, and right to provide information on the surrounding location.
The GPS navigation system for the blind using RFID and an electronic compass according to claim 1, wherein the GPS value of the user's location is corrected by comparing the (pre-stored) GPS value of the RFID tag with the currently measured GPS value of the user's location.
The method of claim 1, wherein the RFID reader or RFID antenna is installed in two parts (the tip and the handle) of the stick to easily receive information from the RFID tag while walking on the street or close to a wall or pole, and transmit the received information via wire or wireless. GPS navigation system for the blind using RFID and electronic compass that delivers to a dedicated terminal or a personal (mobile) terminal from which a navigation app has been downloaded.