| With the existing broadcasting system as a new emergency broadcast system, the respect such as common small regional disaster and high-rise building fire accident can be timely informed to the people who are being threatened. In the event of an emergency process, the control room which is the broadcast system information center is usually subjected to the corresponding emergency threat. Therefore, in order to make the commander can be in a safe area using the broadcast system. It is necessary to establish an effective means of ensuring broadcasting system in disaster can also play a role. For the broadcast system is connected to the mobile phone that has been in-depth the lives of people, the remote command will be achieved.with the commonly mobile phone.In order to cell phones and ordinary radio system must be connected in the original broadcast system add some recognition, control devices, so need to design a receiver, allows the voice signal communicated to broadcast system inside, and make it through simple digital buttons can open or closed radio system, the realization in emergency, emergency commander at the first time of disaster or complete the accident scene command scheduling.This thesis in domestic and abroad emergency broadcast system preliminary understanding, this paper presented a kind of intelligent receiver making method, this intelligence by FM receiver designated frequency demodulation, double audio signal decoding and single chip microcomputer as hardware basis and by means of advanced security mechanism designed to ensure the safety of receivers.This emergency broadcast system for the use of intelligent receiver is a great contribution to public safety. |
