家庭红外报警系统设计

桂林电子科技大学毕业设计〔论文)报告用纸第Ⅱ页AbstractFamily infrared alarm system is the product of naturally arises at the historicmoment along with the development of the society,people's living security requirements,the protection of property awareness increases,puts forward new requirements forsecurity fire prevention.This design introduces a kind of the application of advancedinfrared technology principle of pyroelectric infrared sensor and infrared flame detectoris made and be become family fire alarm system,using the STC89C52 SCM smallestsystem,can be detected in the areas protection detection of wrongdoing and fire signal,which generated by a buzzer alarm.Implementation when within the scope of themonitor,fire signal is detected and illegal workers into the scope of pyroelectric infraredsensor,through the single-chip microcomputer makes the buzzer alarm signal,anddisplayed on the screen at the same time intrusion information.The test results show thatthe infrared fireproof burglar alarm has high safety,low consumption and highsensitivity.Expounds the design content mainly has the following several aspects:set fire alarmwas introduced in detail in the integration of family infrared alarm system overall designscheme and the design of the composition of hardware part and software part,as well ason STC company STC89 C52 the performance and characteristics of the system circuitdesign is reasonable,stable work,good performance,fast detection,simple calculation,easy to do it quickly.The contents of this design mainly include the following aspects:(1)introduced the related technology of infrared ray,analyzed the feasibility ofusing infrared alarm system,and analyzed the heavy and difficult points of fireprevention and theft in infrared light;The general design scheme of home infrared firealarm system is described.(2)complete system hardware circuit design and simulation,including buzzer lowlevel driver circuit and clock circuit diagram design,power supply circuit design,controlmodule design and display circuit design,etc.Keywords:single chip microcomputer;Fire and anti-theft system;LCD 12864;Infrared pyroelectric sensor.