SERVER, SYSTEM, METHOD AND RECORDING MEDIUM FOR SEARCHING FOR MISSING CHILDREN USING MOBILE CROWDSOURCING

• US 20160117904A1
• Filed: 03/25/2015
• Published: 04/28/2016
• Est. Priority Date: 10/24/2014
• Status: Active Grant

• Current Assignee: Korea Advanced Institute of Science and Technology
• Original Assignee: Korea Advanced Institute of Science and Technology
• Inventors: Song, Junehwa, Shin, Hyojeong, Park, Taiwoo, Kang, Seungwoo, Lee, Bupjae, Chon, Yohan
• Granted Patent: US 10,163,317 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G08B 21/0263 System arrangements wherein the object is to detect the direction in which child or item is located
• CPC Class Codes: G08B 21/0269 System arrangements wherein the object is to detect the exact location of child or item using a navigation satellite system, e.g. GPS

Abstract

Disclosed herein are a server, system, method, and recording medium for searching for missing children, using mobile crowdsourcing. According to an embodiment, a server for searching for missing children, using mobile crowdsourcing, comprises a communication unit and a control unit. The communication unit receives a missing-child incident signal from a guardian terminal (held by a parent or guardian) and receives a first location information as to movements of a missing child from a child terminal (carried by the missing child) and sends the first location information received to at least one assistance terminal and receives landmark information from the assistance terminal(s) when a (degree of) similarity between the first location information sent to the assistance terminal(s) and a second location information detected by the assistance terminal(s) is higher than a preset value. The control unit generates a movement or moving path of the missing child, using the landmark information received.

Claims

1. A server for searching for missing children using mobile crowdsourcing comprising:

a communication unit for

receiving a missing-child incident signal from a guardian terminal and

receiving a first location information as to movements of a missing child from a child terminal on the missing child and

transmitting the first location information received to at least one assistance terminal and

receiving landmark information from the at least one assistance terminal when a degree of similarity between the first location information transmitted to the at least one assistance terminal and a second location information detected by the at least assistance terminal is higher than a preset value; and

a control unit for generating a moving path of the missing child, using the landmark information received.

2. The server for searching for missing children using mobile crowdsourcing according to claim 1, further comprising

a storage unit for storing the moving path of the missing child generated by the control unit.

3. The server for searching for missing children using mobile crowdsourcing according to claim 1, wherein the communication unit transmits the moving path of the missing child generated to the guardian terminal.

4. The server for searching for missing children using mobile crowdsourcing according to claim 1, wherein the first location information is wireless signal information detected by the child terminal.

5. The server for searching for missing children using mobile crowdsourcing according to claim 4, wherein the wireless signal information includes information from and associated with a source comprising at least one of nearby Wi-Fi access point and Bluetooth beacon.

6. The server for searching for missing children using mobile crowdsourcing according to claim 1, wherein the second location information is wireless signal information detected by the at least one assistance terminal.

7. The server for searching for missing children using mobile crowdsourcing according to claim 6, wherein the wireless signal information includes information from and associated with a source comprising at least one of nearby Wi-Fi access point and Bluetooth beacon.

8. The server for searching for missing children using mobile crowdsourcing according to claim 1, wherein the landmark information is information inputted by a user of the assistance terminal and transmitted to the communication unit and is at least one of address, building name, business name, image captured, recorded file and message.

9. The server for searching for missing children using mobile crowdsourcing according to claim 1, wherein the control unit sorts the second location information transmitted from the assistance terminal in a chronological order and generates the moving path of the missing child.

10. A system for searching for missing children using mobile crowdsourcing comprising:

the server for searching for missing children according to claim 1;

the child terminal for detecting wireless signal and transmitting the first location information based on the wireless signal detected to the guardian terminal or the server;

the guardian terminal for receiving the first location information from the child terminal and transmitting the first location information received and the missing-child incident signal to the server; and

the at least one assistance terminal for receiving the first location information, and evaluating a similarity between the first location information transmitted and the second location information detected by the at least one assistance terminal, and generating and transmitting the landmark information to the server when the similarity evaluated is higher than a preset value.

11. The system for searching for missing children using mobile crowdsourcing according to claim 10, wherein the control unit sorts the second location information transmitted from the assistance terminal in a chronological order and generates the moving path of the missing child.

12. The system for searching for missing children using mobile crowdsourcing according to claim 10, wherein the guardian terminal comprises an interface unit for outputting the moving path of the missing child received from the server.

13. The system for searching for missing children using mobile crowdsourcing according to claim 10, wherein the child terminal transmits the first location information to the guardian terminal or the server using the wireless signal detected.

14. The system for searching for missing children using mobile crowdsourcing according to claim 10, wherein:

when the guardian terminal or the server requests the first location information, the child terminal transmits the first location information to the guardian terminal or the server by using the wireless signal detected.

15. The system for searching for missing children using mobile crowdsourcing according to claim 10, wherein the assistance terminal evaluates the similarity between the first location information received and the second location information self-detected by the assistance terminal by using at least one of cosine similarity, Tanimoto coefficient similarity, and rank-based similarity calculations.

16. The system for searching for missing children using mobile crowdsourcing according to claim 10, wherein the assistance terminal comprises an interface unit for outputting an assistance request message when the similarity is higher than the preset value.

17. The system for searching for missing children using mobile crowdsourcing according to claim 10, wherein the guardian terminal and the child terminal are connected via wireless connection.

18. A method for searching for missing children using mobile crowdsourcing, comprising:

a child terminal transmitting a first information based on wireless signal detected to a guardian terminal;

the guardian terminal transmitting the first location information and missing child incident signal to a server;

the server transmitting the first location information received from the child terminal or the guardian terminal to an assistance terminal;

the assistance terminal evaluating a similarity between the first location information transmitted and a second location information detected by the assistance terminal and when the similarity evaluated is higher than a preset value, outputting an assistance request message to an interface unit of the assistance terminal;

the assistance terminal transmitting landmark information inputted by an assistance terminal user, who recognizes the assistance request message, to the server; and

the server generating a moving path of the missing child using the landmark information transmitted.

19. The method for searching for missing children using crowdsourcing according to claim 18, further comprising

the server transmitting the moving path generated to the guardian terminal.

20. The method for searching for missing children using crowdsourcing according to claim 19, wherein the method is performed by a program stored in a computer-readable recording medium.