红外遥控电子密码锁的设计

Design of infrared remote control electronic code lockAbstractIn our daily life and work,the password lock is a kind of everywhere,indispensable necessities,it protects our privacy and personal property safety.Smallto individual diaries,large to state secrets,it is everywhere,certainly,the modus ismany forms.Usually see the mechanical lock must be inseparable from the key,andonce the key is lost or forgotten in the office and other places,will give peopleunnecessary trouble,obviously,the old protection device has been unable to meet therequirements of the new era.At present,we use the electronic code lock instead of the original mechanicallock,to solve the previous password is too simple,lack of security shortcomings.Thenew electronic code lock is not only low processing cost,simple operation,and safetyperformance is also the traditional mechanical lock can not be compared.Unlockingpeople do not need to carry the key,do not have to worry about the key is lost,justremember the password will be able to open.This design is based on STC89C51 single-chip system design,and subjojin a 4 x4 keyboard,show and alarm system.You can set and modify the user password (thedefault password is six),including password error alarm instructions,multiple inputerror lock,multiple input error alarm and other functions.When the password isentered correctly,it will automatically display "OPEN!"And the password error is"error!".If the error three times,it will lock.Key words STC89C51 LCD1602 Electronic password lock 4X4keyboard