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Wireless Security Alarm Circuit of 2051 Design

2016-11-21 16:38  
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Wireless Security Alarm Circuit of 2051 Design
This site to introduce net friend about the core production of wireless security alarm system. The single chip AT89C2051 is used as the central processing chip , which makes the system extension become more convenient.Corresponding soft should be changed if some settings need be altered.This is useful for single chip study. First,Hardware Design The circuit principle diagram is shown as above, and it consists of the main wireless access, data decoding, data processing, alarm circuit, output power,alarm display and power supply circuit.The machine receiving frequency is 315M and decoding data uses PT2272 special decoder chip with stable and dependable performance which is widely used in the market.Data processing is completed by the single chip and it is used to distinguish alarm signal,accept all operating instructions and complete the corresponding operation.