KR101412811B1 - Positioning system and method based on wifi-communication - Google Patents

Abstract

A Wi-Fi based location tracking system and method are disclosed. The location tracking system includes a Wi-Fi module attached to a target subject, which performs Wi-Fi direct communication, and measures the intensity of a Wi-Fi direct signal to output an alarm sound if the intensity is lower than a predetermined threshold; a smartphone which performs Wi-Fi direct communication with the Wi-Fi module, measures the intensity of the Wi-Fi direct signal, outputs the measured result as different alarm sounds or alarm displays according to the previously calibrated intensity of the signal, and outputs an alarm sound if the intensity of the Wi-Fi direct signal is lower than a predetermined threshold; and a location tracking server. Therefore, the compact Wi-Fi module that is attached to an object to be protected, such as a child or an elderly person who has Alzheimer′s disease under the care of a protector can be communicated with the smartphone of the protector through the Wi-Fi direct communication of which a signal range reaches to 100 meters or more, thereby preventing the child or the elderly person from getting lost. The intensity of the signal is calibrated in advance, and thus the protector is notified when the child, the elderly, or the object to be protected is away from the Wi-Fi module more than a certain distance, thereby preventing the disappearance of the child, elderly person who has Alzheimer′s disease, or the object to be protected.

Description

[0001] POSITIONING SYSTEM AND METHOD BASED ON WIFI-COMMUNICATION [0002]

The present invention relates to a location tracking system and method, and more particularly to a WiFi based location tracking system and method.

There are cases in which a person to be protected such as a child or a demented elderly person or a dog becomes lost or missing. This can occur frequently in many people, and the caregiver often can not figure out the material while digging for a moment.

In such cases, it is often the case that the caregiver is in the vicinity, but is unable to find the person to be protected by mistake. Therefore, it is obvious that the probability of finding a person to be protected is very high when the initial material is grasped.

Conventionally, in order to find valuables such as wallets, a bluetooth tag is attached to a purse for communication. The distance of the bluetooth signal reaches only about 10 meters in an indoor environment, The extent is limited. On the other hand, the WiFi signal has an effective radius of about 30 meters in the room and about 100 meters outdoors. There is a problem that it is not very useful. Particularly, in the case of a fast movement by a vehicle or the like, there is a problem that it becomes almost useless with a communication distance of 10 meters.

In the case of the conventional Bluetooth tag, there is a problem in that there is no tracking method of the lane after it is not found in the radius of 10 meters. For example, take your wallet and run away quickly.

As described above, the conventional Bluetooth tag has no means of continuously tracking when it is outside the narrow radius range, and can not secure clues or evidence to be found later. Also, since you can not immediately get help from the police, you must do it yourself within a 10-meter radius.

It is an object of the present invention to provide a Wi-Fi based location tracking system.

It is another object of the present invention to provide a Wi-Fi based location tracking method.

The Wi-Fi-based location tracking system according to the present invention is attached to a person to be protected, performs wifi direct communication, measures an intensity of a Wi-Fi direct signal, and outputs an alarm sound when the intensity falls below a predetermined threshold value. A Wi-Fi module configured to output; The WiFi direct communication is performed with the Wi-Fi module, the intensity of the Wi-Fi direct signal is measured, and different alarm sounds or alarm indications are outputted according to the signal intensity that is calibrated beforehand as the measurement result. And outputs an alarm sound when the number of alarms falls below a predetermined threshold value. And may be configured to include a location tracking server.

Here, if the Wi-Fi direct signal is not received, the Wi-Fi module connects the Wi-Fi hotspot to a nearby Wi-Fi hotspot and calculates real-time location information using a GPS mounted on the Wi-Fi module A camera mounted on the Wi-Fi module, a voice / sound is input using a microphone mounted on the Wi-Fi module, and the calculated real-time position information, And transmit the received voice / sound to the location tracking server via the Wi-Fi hot spot together with the ID of the Wi-Fi module.

The location tracking server receives and stores the real-time location information, image, and voice / sound, searches the ID of the smartphone associated with the ID of the Wi-Fi module, And voice / sound and real-time location information of the Wi-Fi hot spot.

The smartphone may be configured to receive real-time location information, video, voice / sound, and real-time location information of the Wi-Fi hotspot from the location tracking server and display the real-time location information on the display in real time.

The location tracking server transmits real-time location information, image, voice / sound, and real-time location information of the Wi-Fi hot spot to the police smartphone or police car terminal nearest to the Wi-Fi module, The body image information, the impression information, and the current outfit of the protected person stored in advance in the police smartphone or the police car terminal.

According to another aspect of the present invention, there is provided a Wi-Fi based location tracking method comprising: performing wifi direct communication between a Wi-Fi module attached to a person to be protected and a smartphone of a guardian to measure signal strengths; The smartphone outputting different alarm sounds or alarm indications according to the signal strength measured in advance as the measurement result of the signal strength; Outputting a warning sound when the measured signal strength of the signal strength is not measured; Connecting the Wi-Fi module to a nearby Wi-Fi hotspot; Real-time location information is calculated using a GPS equipped with the Wi-Fi module, images are captured using a camera equipped with the Wi-Fi module, and voice / sound is recorded using a built-in microphone. Receiving an input; The Wi-Fi module transmits the calculated real-time location information, the photographed image, and the received voice / sound together with the ID of the Wi-Fi module to the location tracking server via the Wi-Fi hot spot; The location tracking server receiving and storing the real-time location information, image and voice / sound and searching for an ID of the smartphone associated with the ID of the Wi-Fi module; The location tracking server transmitting real-time location information of the stored real-time location information, image, voice / sound and the Wi-Fi hot spot to the smartphone of the searched ID; And real-time location information of the Wi-Fi module from the location tracking server, real-time location information of the Wi-Fi module, video and audio / sound, and real-time location information of the Wi-Fi hot spot, .

Transmitting the real-time location information, the image, the voice / sound, and the real-time location information of the Wi-Fi hot spot to the police smartphone or the police car terminal nearest to the Wi-Fi module; The location tracking server may further comprise transmitting the image of the person to be protected, the body information, the impression of the person to be protected, and the current cost to the police smartphone or the police car terminal, which is stored in advance in the location tracking server.

According to the Wi-Fi based location tracking system and method described above, a small Wi-Fi module such as a child or a senile dementia communicates with a smartphone of a guardian through Wi-Fi direct communication with a signal arrival distance of 100 meters or more, It is possible to prevent the demented elderly from becoming lost. At this time, the signal intensity is calibrated in advance, and the guardian is notified in accordance with the distance to the extent of the distance, thereby making it possible to prevent loss of the lost object or the object to be protected.

In addition, when the signal is out of range, the WiFi module has a function of allowing a guardian to quickly find a desired image through image capturing, voice input, or the transmission of a GPS signal. By storing this information in the location tracking server, it is possible to provide clues that can be found later.

In addition, this information can be transmitted to police police smartphone or police car terminal in the vicinity of the police in real time, and it is configured to transmit the impression of the person to be protected, image, current dress, etc. in real time, .

1 is a block diagram of a Wi-Fi based location tracking system according to an embodiment of the present invention.
2 is a flowchart of a Wi-Fi based location tracking method according to an embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail to the concrete inventive concept.

It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Like reference numerals are used for like elements in describing each drawing.

The terms first, second, A, B, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, .

On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

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

1 is a block diagram of a Wi-Fi based location tracking system according to an embodiment of the present invention.

Referring to FIG. 1, a Wi-Fi-based location tracking system 100 according to an embodiment of the present invention includes a Wi-Fi module 110, a smart phone 120, a location tracking server 130).

The location tracking system 100 is a wired / wireless communication system in which a WiFi module 110 such as an infant or a demented elderly person or the like is connected to a smart phone of a guardian by a wifi-direct communication with a signal arrival distance ranging from 100 meters to 200 meters, (200). When the signal arriving radius is exceeded, a large alarm sound is emitted from the WiFi module 110, and the guardian smart phone 120 notifies the guardian of the fact that the person is out of the signal arrival radius through an alarm sound and vibration, do.

Also, various alarms are provided to the user's smartphone 120 according to the calibration of the signal intensity previously classified according to the signal intensity within the signal arrival radius, so that the user can quickly recognize that the user is distant from the person to be protected .

Meanwhile, when the signal arrival radius is out of the predetermined range, the Wi-Fi module 110 collects a location, a surrounding image, a surrounding voice, etc. according to the GPS signal and transmits the collected location information to the location tracking server 130 via the surrounding Wi- The location tracking server 130 may also be configured to transmit the detected location information to the smartphone 120 in real time so that the user can visit the location tracking server 130. The location tracking server 130 may also be connected to the police smart phone 300 or the police car terminal 301 This information is transmitted in real time to receive help from the police. It is also possible to configure the protector to provide the police smartphone 300 or the police car terminal 301 with the impression of the protected person updated in the location tracking server 130, body size, weight, image (photograph) do.

Hereinafter, the detailed configuration will be described.

The WiFi module 110 is configured to be able to attach or hold to a person to be protected such as an infant, a dog or a demented elderly person, and is configured to perform wifi direct communication with the smartphone 120 of the protector.

At this time, the WiFi module 110 measures the strength of the WiFi direct signal and outputs a large alarm sound when the intensity falls below a predetermined threshold value. Therefore, the guardian can hear it and visit. In addition, it is preferable to output a warning voice informing that it is possible to be lost, so that the surrounding people can recognize it and help them.

The smartphone 120 is configured to perform WiFi direct communication with the WiFi module 110 as a smartphone of a guardian.

The smartphone 120 is configured to measure the strength of the WiFi direct signal and to output different alarm sounds or alarm indications according to the signal strength pre-calibrated as a measurement result. That is, if a signal strength of 10 meters or 20 meters is measured, it can be configured to display 10 meters or 20 meters on the display and output audio.

The smartphone 120 may be configured to output an alarm sound when the WiFi direct signal falls below a threshold value. That is, if the guard is distant by more than about 100 meters or more than 200 meters, the guardian can be alerted. This threshold may be set when no signal is received. It is preferable that the user arbitrarily sets the application in consideration of the characteristics of the surrounding area on the application of the smartphone 120. In the place where there is no person, the threshold value is set to a lower level so that the action radius of the person to be protected can be set wide, and in a place where there are many people and crowded, the threshold value is set to be very high.

Next, in the case where no signal is received at all, it is possible to find a person to be protected as a workaround.

The WiFi module 110 may be configured to connect to a WiFi hotspot 200 that can be connected to the WiFi hotspot 200 if the WiFi direct signal is not received.

The WiFi module 110 may include a GPS 111, a camera 112 and a microphone 113. The WiFi module 110 may calculate real-time location information using the GPS 114, And may be configured to photograph an image using the camera 112 and receive voice / sound using the microphone 113. [

The Wi-Fi module 110 may be configured to transmit real-time location information, video and voice / sound to the location tracking server 130 via the Wi-Fi hot spot 200 along with the ID of the Wi-Fi module 110. If the WiFi direct signal is received but is below the threshold value, it is preferable to transmit the information to the smartphone 120 via Wi-Fi direct communication.

Here, the Wi-Fi hotspot 200 may be a Wi-Fi hotspot of a mobile service provider who has contracted in advance in a busy city area. In order to increase the chase probability in the area where reception of the GPS signal is impossible, . The location where the Wi-Fi hot spot 200 is installed can be configured to be searched and found in the database of the Wi-Fi hot spot service provider through the unique ID of the Wi-Fi hot spot 200.

The Wi-Fi hot spot 200 is preferably configured to communicate with the location tracking server 130 via a dedicated relay server (not shown) for the Wi-Fi hot spot 200. Voice / sound, real-time location information, etc. of the Wi-Fi hot spot 200 to the dedicated relay server (not shown), and a dedicated relay server (not shown) have. This information can help to understand the location and status of the protected person and can be very useful if the person being protected is unable to communicate, such as infants, demented elderly people, dogs.

The location tracking server 130 is configured to receive and store real-time location information, video and voice / sound.

The location tracking server 130 searches the ID of the smartphone 120 associated with the ID of the Wi-Fi module 110 and transmits the previously stored real-time location information, image, and voice / sound to the corresponding smart phone 120 do.

At this time, the location tracking server 130 preferably transmits real-time location information of the Wi-Fi hot spot 200 together.

On the other hand, the smartphone 120 receives real-time location information, video, voice / sound and real-time location information of the Wi-Fi hot spot 200 from the location tracking server 130, Lt; / RTI > Accordingly, the user can visit the location of the displayed smartphone 120 and the location of the WiFi module 110.

At this time, the guardian's smartphone 120 inputs a voice input for protecting the infant or demented elderly person through a microphone (not shown) on the smartphone 120, and transmits the voice input to the location tracking server 130, the Wi- To the Wi-Fi module 110 through the speaker (not shown) of the Wi-Fi module 110. In this case, it is preferable that the WiFi module 110 is configured so that a fixed IP address is set in advance. At this time, it is desirable that an IPv6 address having a large number of addresses is allocated. By listening to the voice of the protector output from the Wi-Fi module 110, the surrounding people can help.

On the other hand, the location tracking server 130 transmits real-time location information, video and audio / sound of the Wi-Fi module to the police smartphone 300 or the police car terminal 301 closest to the Wi-Fi module 110, Time location information. At this time, the location of the police or the police car may be configured to cooperate with a server (not shown) of the police station.

At this time, the location tracking server 130 may be configured to transmit the image of the protected person, the body information, the impression of the person to be protected, the current dress to the police smartphone 300 or the police car terminal 301 via the server of the police station . This is to allow early detection and assistance of nearby police officers. Information such as the current dress must be transmitted to the location tracking server 130 in advance by the user using the application before going out. It is preferable that an image is taken every time it goes out and updated to the location tracking server 130. [

2 is a flowchart of a Wi-Fi based location tracking method according to an embodiment of the present invention.

Referring to FIG. 2, first, wifi direct communication is performed between the WiFi module 110 attached to the object to be protected and the smartphone 120 of the protector, and the signal strength is measured (S101).

Next, the smartphone 10 outputs different alarm sounds or alarm indications according to the signal strengths that have been calibrated as a result of measurement of the signal strength (S102).

Next, it is determined whether or not the measurement result signal of the signal strength is not measured (S103). If not, the Wi-Fi module 110 outputs an alarm sound (S104).

Next, the Wi-Fi module 110 is connected to a Wi-Fi hotspot 200 that can be connected thereto (S105).

Next, real-time location information is calculated using a GPS (registered trademark) 111 equipped with a Wi-Fi module 110, an image is photographed using a camera 112 installed in the room, A voice / sound is input using a microphone 113 (S106).

Next, the Wi-Fi module 110 transmits the calculated real-time location information, the photographed image, and the previously received voice / sound to the Wi-Fi hot spot 200 through the Wi-Fi hot spot 200 together with the ID of the Wi- (Step S107).

Next, the location tracking server 130 receives and stores real-time location information, video and voice / sound, and searches for the ID of the smartphone 120 associated with the ID of the Wi-Fi module 110 (S108).

Next, the location tracking server 130 transmits the real-time location information, the image, the voice / sound, and the real-time location information of the Wi-Fi hot spot 200 stored in the smart phone 120 of the previously searched ID (S109).

Next, the smartphone 120 receives the real-time location information of the Wi-Fi module 110, the video and audio / sound and the real-time location information of the Wi-Fi hot spot 200 from the location tracking server 130 and displays it on the display Displayed in real time (S110).

Next, the location tracking server 130 transmits real-time location information, video and audio / sound of the Wi-Fi module 110 to the police smartphone 300 or the police car terminal 301 closest to the Wi-Fi module 110, 200) (S111).

Next, the location tracking server 130 transmits the image of the protected person, the body information, the impression and the current dress stored in advance in the location tracking server 130 to the police smartphone 300 or the police car terminal 301 (S112 ).

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the following claims. There will be.

110: WiFi module
111:
112: camera
113: microphone
120: Smartphone
130: Location Tracking Server
200: Wi-Fi hotspot
300: police smartphone
301: Police car terminal

Claims (4)

A WiFi module attached to the person to be protected and configured to perform wifi-direct communication, measure the strength of the Wi-Fi direct signal, and output an alarm sound when the intensity falls below a predetermined threshold value;
The WiFi direct communication is performed with the Wi-Fi module, the intensity of the Wi-Fi direct signal is measured, and different alarm sounds or alarm indications are outputted according to the signal intensity that is calibrated beforehand as the measurement result. And outputs an alarm sound when the number of alarms falls below a predetermined threshold value.
A location tracking server,
The Wi-
If the WiFi direct signal is not received, it is connected to a WiFi hotspot that can be connected to the neighboring WiFi hotspot, calculates real-time location information using a GPS mounted on the WiFi module, The method includes capturing an image using a camera, inputting voice / sound using a microphone mounted on the Wi-Fi module, receiving the calculated real-time position information, the captured image, and the received voice / To the location tracking server via the Wi-Fi hot spot together with the ID of the Wi-Fi module,
The location tracking server comprises:
Receiving the real-time location information, the image, and the voice / sound and storing the real-time location information, the image, the voice / sound, and the Wi-Fi signal in the smartphone by searching for the ID of the smartphone associated with the ID of the Wi- To transmit real-time location information of the hotspot,
In the smartphone,
And real-time location information of the Wi-Fi module from the location tracking server, real-time location information of the Wi-Fi hot-spot, video, voice / sound and real-time location information of the Wi-Fi hot spot are displayed on the display in real time. The location tracking system according to claim 1,
Video and voice / sound of the Wi-Fi module and real-time location information of the Wi-Fi hot spot to a police smartphone or a police car terminal closest to the Wi-Fi module, and transmits the real-time location information of the Wi- , Body information, impression information, and current attire to the police smartphone or police car terminal together. Performing WiFi direct communication between a WiFi module attached to a person to be protected and a smartphone of a guardian to measure signal strengths;
The smartphone outputting different alarm sounds or alarm indications according to the signal strength measured in advance as the measurement result of the signal strength;
Outputting a warning sound when the measured signal strength of the signal strength is not measured;
Connecting the Wi-Fi module to a nearby Wi-Fi hotspot;
Real-time location information is calculated using a GPS equipped with the Wi-Fi module, images are captured using a camera equipped with the Wi-Fi module, and voice / sound is recorded using a built-in microphone. Receiving an input;
The Wi-Fi module transmits the calculated real-time location information, the photographed image, and the received voice / sound together with the ID of the Wi-Fi module to the location tracking server via the Wi-Fi hot spot;
The location tracking server receiving and storing the real-time location information, image and voice / sound and searching for an ID of the smartphone associated with the ID of the Wi-Fi module;
The location tracking server transmitting real-time location information of the stored real-time location information, image, voice / sound and the Wi-Fi hot spot to the smartphone of the searched ID;
And real-time location information of the Wi-Fi module from the location tracking server, real-time location information of the Wi-Fi module, video, voice / sound, and real-time location information of the Wi-Fi hot spot and displaying the same on a display in real time Wi - Fi based location tracking method. The method of claim 3,
The location tracking server transmitting real-time location information, image, voice / sound, and real-time location information of the Wi-Fi hot spot to the police smartphone or police car terminal closest to the Wi-Fi module;
Wherein the location tracking server is further configured to transmit the image of the person to be protected, the body information, the impression of the person to be protected, the current dress to the police smartphone or the police car terminal stored in advance in the location tracking server. Location tracking method.

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