SECURITY AND INTRUSION MONITORING SYSTEM BASED ON THE DETECTION OF SOUND VARIATION PATTERN AND THE METHOD

摘要

PURPOSE: A security system and a method thereof are provided to enhance reliability while preventing non-working and malfunction and to offer a security monitoring system technology of low cost / low power / high reliability by sensing whether something breaks in a security space or not and by sensing information through pattern measurement of sound delivery characteristic change using an integrated module. CONSTITUTION: A security system through sound field change pattern analysis comprises a sound field change sensing device (100) and an operating device (200). The sound field change sensing device is installed within a fixed monitoring space and measures a sound field change pattern by receiving sound waves which is received after generating sound sources. The sound field change sensing device senses an abnormal situation by reading the sound field change pattern. The operating device notifies a dangerous situation to an external device by receiving the sound field change pattern when sensing the abnormal situation. The security system measures a signal to noise ratio (SNR) value which is a rate with an initial acoustic transfer function deviation (Noise) for a change value of an acoustic transfer function during a regular time period and obtains it. [Reference numerals] (100) Sound field change sensing device; (130) Control unit; (140) Memory; (150) Communications module; (200) Operating device; (300) Response device; (AA) Sound generating unit; (BB) Sound receiving unit; (CC) Image obtaining unit