SYSTEM INFORMING INFUNT'S CRYING TO HANDPHONE

摘要

A system for notifying the crying sound of an infant to a mobile phone is provided to perform an automatic calling operation to a mother's mobile phone when sensing the crying sound of the infant, thereby confirming the state of infant. An infant's crying sound sensing device(10) is located at the neighborhood of an infant and senses the crying sound of an infant. An infant crying sound notifying device(20) transmits the infant's crying sound to a mobile phone of the parent. A microphone(12) senses the crying sound. A band-pass filter detects only the frequency band corresponding to the infant's crying sound from the sound sensed by the microphone. A level comparator compares the reference voltage with the output of the band-pass filter. When the crying sound is discriminated as the infant's crying sound, an analog switch passes through the sound from the microphone. A wireless transmission device transmits the output of the analog switch through an antenna.