Published:2011/7/26 1:52:00 Author:Christina | Keyword: Intelligent, wireless, security system, design circuit | From:SeekIC
The intelligent wireless security system is composed of the sensor, the family intelligent alarm, the property management center alarm-receiving host computer and the related control management softwares. Figure 1 is the block diagram of the family intelligent alarm, figure is the block diagram of the property management center alarm-receiving host computer. 1.1 The host computer circuit As the figure 1 shows, the RF receiving module of the host computer circuit receives the alarm signal of the sensor, and alarm signal is decoded by the decoder (PT2272), so we get the address and data type of the alarm sensor, only when the host computer address and the sensor address are the same, the signal can be received by the host computer.
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