The design of smart Alarm Detector Zigbee
The traditional cable Alarm Detector Zigbee is only local Alarm sound detected when there is theft, and there is no controller inside, which can easily be destroyed, installed, expanded and inconvenient. The expert of high power Alarm of wenzhou huanghe industrial co., LTD. Will explain to you the Alarm Detector Zigbee. Alarm Detector Zigbee USES singlechip control, powerful, and easy to expand into multi-purpose smart home systems.
Can Alarm Detector Zigbee design traditional wired Alarm Detector Zigbee is detected when having stolen love only in the local Alarm sounds, internal controller, easy broken failure, installation, extension, also not convenient. In this paper, design of the Alarm Detector Zigbee using single-chip microcomputer control, powerful, and easy to expand into a multi-purpose intelligent household system, intelligent Alarm system hardware architecture is shown in figure 1, mainly including the central controller, launch receiving module, DTMF (dual tone multiple frequency) module, voice module, telephone interface module, etc.
Choose the AT89C51 MCU. P3.2(INT0) is connected with the burglar detector to detect the theft. If the theft occurs, the external interrupt will be triggered. P2.1 connect voice circuit to achieve voice playback control. P2.3 connect the telephone interface chip to achieve the analog pick - off control. P1.0 output simulation remote control. P1.4 connect alarm buzzer. P0.0 ~ P0.3 is connected to the MT8888 D0 ~ D3 respectively and USES the data bus. P2.0 is connected with the RS0 of MT8888 to control the selection of internal registers of the MT8888. P2.7 and MT8888 CS control the choice of MT8888. P3.3(INT1) connects the 24 feet of the telephone interface chip to detect the ringing. P3.6 and P3.7 are connected with MT8888 WR and RD respectively to control the read and write operation of MT8888
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