Security system based on sound field variation pattern analysis and the method
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G08B-013/00
H04R-029/00
G08B-013/16
G08B-013/196
출원번호
US-0601883
(2012-08-31)
등록번호
US-9197976
(2015-11-24)
우선권정보
KR-10-2011-0142499 (2011-12-26)
발명자
/ 주소
Park, Kang-Ho
Lee, Sung Q
출원인 / 주소
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
인용정보
피인용 횟수 :
2인용 특허 :
4
초록▼
The present disclosure relates to security system and method based on sound field variation pattern. The present disclosure identifies a slow variation pattern of a acoustic transfer function occurring due to a gradual change in temperature and humidity of air according to a change in time and a cha
The present disclosure relates to security system and method based on sound field variation pattern. The present disclosure identifies a slow variation pattern of a acoustic transfer function occurring due to a gradual change in temperature and humidity of air according to a change in time and a change in a characteristic of an acoustic element, from a sudden sound field variation pattern within an internal space occurring due to an intrusion from an outside, activation of an air conditioning and heating device, and the like, or within a surveillance space induced by a change in an acoustic physical property. The present disclosure identifies sound field variation patterns occurring due to a change in an acoustic structure by an intrusion and a change in temperature and convection by air conditioning and heating. The present disclosure stores and verifies image information using an image obtaining apparatus.
대표청구항▼
1. A security system based on sound field variation pattern analysis, comprising: a sound field variation detecting apparatus installed within a predetermined surveillance space that receives a sound wave that has been generated by a sound source, and that obtains a sound field variation pattern by
1. A security system based on sound field variation pattern analysis, comprising: a sound field variation detecting apparatus installed within a predetermined surveillance space that receives a sound wave that has been generated by a sound source, and that obtains a sound field variation pattern by comparing an initial acoustic transfer function to a measured acoustic transfer function, and that detects an abnormal situation by reading the sound field variation pattern; andan operation apparatus that receives the sound field variation pattern and that notifies an external apparatus about an emergency situation when the abnormal situation is detected,wherein the sound field variation pattern is obtained by measuring an intrusion determining signal value (signal-to-noise ratio (SNR)) that is a ratio of an initial sound transfer function deviation to a variation value of an acoustic transfer function for a predetermined time period,wherein the sound field variation detecting apparatus periodically resets the initial acoustic transfer function. 2. The system of claim 1, further comprising: an image obtaining apparatus that obtains image information of the surveillance space and that provides the obtained image information to the operation apparatus when the sound field variation detecting apparatus detects the abnormal situation. 3. The system of claim 1, wherein the sound field variation detecting apparatus comprises: a sound source generator that outputs a sound wave of an audio frequency band having a predetermined frequency band within the predetermined surveillance space;a sound wave receiver that receives the sound wave output from the sound source generator;a controller that analyzes the sound field variation pattern for each frequency band using the received sound wave, and that provides an analysis result of the sound field variation pattern;memory that stores the sound field variation pattern; anda communication module that transfers the analysis result of the sound field variation pattern to the external apparatus. 4. The system of claim 1, wherein the sound field variation detecting apparatus sends the sound field variation pattern to the operation apparatus when the sound field variation detecting apparatus detects the abnormal situation, and the operation apparatus notifies a pre-stored user terminal device and a corresponding institution about the emergency situation. 5. A security method based on sound field variation pattern analysis, comprising: outputting a sound wave of an audio frequency band having a predetermined frequency band into a surveillance space;receiving the sound wave;calculating a measured acoustic transfer function from the received sound wave;comparing an initial acoustic transfer function with the measured acoustic transfer function to create a sound field variation pattern, and to determine whether an abnormal situation has occurred;analyzing the sound field variation pattern to determine whether an intrusion has occurred, when the abnormal situation is determined to have occurred;transferring the sound field variation pattern to an operation apparatus when the intrusion is determined to have occurred, and notifying a pre-registered external apparatus about whether the intrusion has occurred; andperiodically resetting the initial acoustic transfer function. 6. The method of claim 5, wherein the sound field variation pattern is analyzed by comparing the sound field variation pattern with a pre-stored sound field variation pattern of an exceptional situation. 7. The method of claim 6, wherein the exceptional situation includes a sudden change in temperature and humidity of indoor air or convection. 8. The method of claim 6, wherein the sound wave is a consecutive wave of a multi-tone sound source including a linear summation of sine waves having a plurality of frequencies. 9. The method of claim 5, wherein the pre-registered external apparatus is notified about whether the intrusion has occurred by instructing, by a sound field variation detecting apparatus, an interacting image obtaining apparatus to obtain an image within the surveillance space when the intrusion is determined to have occurred, and transferring, by the image obtaining apparatus, the obtained image to the operation apparatus together with the sound field variation pattern. 10. The method of claim 5, wherein the external apparatus includes a user terminal device and a corresponding institution, and the corresponding institution is an institution that copes with the emergency situation. 11. The method of claim 5, wherein the initial acoustic transfer function is reset by measuring an acoustic transfer function within the surveillance space in an initial security mode.
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