ABSTRACT
Infrared Technology applies more and more and extensively with universality, so we choose to use the AT89C51 a single slice machine for the core, taking the MT8880 chips and ISD1420 chips as assistances and some other outer circle assistance electric circuit, constitute a red outside report to the police system automatically. Infrared Sensors is safe and concealment, and the technique is very mature. Therefore chose to use a red unauthorized biography feeling machine. The main function of that system BE: make use of a red unauthorized biography feeling machine importation to report to the police an information to the CPU, the CPU is passing a speech chip's creation to report to the police and correspond of report to the police an information to pass customer through a words machine, the customer can pass words machine to carry on an operation to the system, can relieve a mistake to report to the police in time.
This system is been three personal cooperation completions by us. Mainly there are signal examination, speech chip and software part. I mainly is be responsible for software part. The software part is mainly turned by system first attempt, the password examines, flapping a bell sound examination, taking off machine automatically etc. part constitute.
