这些模块包括振铃检测模块、来电过滤模块、双音多频解码模块、语音提示模块和单片机控制驱动模块。
These modules include the ring detection module, call filtering module, dual-tone multi-frequency decoder modules, voice prompt module and microprocessor controlled driver module.
系统利用得到的来电号码，同存储的黑名单中的号码进行比较，判断是接通话机振铃线路，抑或控制模拟挂机电路挂机。
The system USES Caller ID, with the store's blacklist of Numbers, the judgement is connected to phone lines ringing, or simulated hang up control circuit hang up.
系统检测振铃累计到设定次数时自动摘机，进入密码检测，输入正确后选择被控制电器的开或关，完成后返回。
Once the right code in confirmed, this system will be able to choose whether to turn on or off the controlled appliance and return to original state after completing the operation.
它即可用于参数和时滞未知的或慢时变的受控对象，又可用于逆不稳定过程，并能消除控制器的振铃现象，应用范围大为拓广。
It can be applied not only to plants with unknown or show time-varying parameters and delays, but also to unstable inverse processes.
它即可用于参数和时滞未知的或慢时变的受控对象，又可用于逆不稳定过程，并能消除控制器的振铃现象，应用范围大为拓广。
It can be applied not only to plants with unknown or show time-varying parameters and delays, but also to unstable inverse processes.
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