| 摘要 |
The present invention relates to a wireless communication system, and more specifically, to a system which enables adjacent objects connected by using various wireless communication methods to effectively recognize transmitted signals through arranging a configuration in a wireless machine-to-machine (M2M) device to transmit the signals simultaneously in order to recognize the adjacent objects based on the various wireless communication methods and a control method thereof. The wireless M2M system capable of multi-band radio wave transmission includes: at least high frequency signal transmission unit; at least low frequency signal transmission unit; a control unit; a power supply unit; and a connector unit. The high frequency signal transmission unit includes: a main high frequency controller unit which is a central processing unit (CPU); and a high radio frequency (RF) driving device unit which transmits an RF signal. The low frequency signal transmission unit includes: a main low frequency controller unit which is another CPU; an amplification unit amplifying a voice signal output; and an external low frequency memory unit for storing a sound source file. The control unit includes: a main controller unit which is another CPU; a control RF driving device unit which receives a control command from the outside through short-ranged wireless communication; and an external control memory unit which is used as a storage area require to operate the short-ranged wireless communication. The control unit interlinks the high frequency signal transmission unit and the low frequency signal transmission unit to enable one or both of the signal transmission units to transmit the signals. The power supply unit receives the main power supply to convert the received power to the power supply required by the high frequency signal transmission unit, the low frequency signal transmission unit, and the control unit. The connector unit connects an external wire-based interface with one or more of the high frequency signal transmission unit, the low frequency signal transmission unit, and the control unit. |
