16-08-2012, 10:01 AM
EMBEDDED PASSWORD BASED SECURITY DOOR LOCK SYSTEM USING AT89C51
2.EMBEDDED PASSWORD BASED SECURITY DOOR LOCK SYSTEM USING 89C51.doc (Size: 24.5 KB / Downloads: 67)
Our doors serve as entrances to our homes and offices. They may also provide access to strangers, criminals and offenders. So how do we secure our doors and prevent intrusions by these people? This is the sole of purpose of door locks. They keep us and our properties safe and protected. The standard type of doorknob is easy to manipulate and provides weak protection. A deadbolt lock, however, provides good protection against robbers who try to break through our doors and properties.
The method of lock picking involves opening the door lock with a locking tool kit. A basic kit contains a screwdriver or other types of tension wrench and a lock pin, which is a long and thin piece of metal that is curved at one end. In cases of emergencies, a hairpin may substitute for the lock pin. A professional kit, on the other hand, contains several types of tension wrenches in varying in sizes and shapes and lock pins with different dimensions. It may also contain a pick gun which is an instrument that vibrates and push several lock pins at the same time.
The main goal of this project is develop an embedded password security door lock system using microcontroller. In this project we are going to use 4x4keypad to enter the security lock. Here microcontroller place major role which is nothing but decision of door opening. Here predefined password is stored in microcontroller. We have to write a code such that whenever password is entered from keypad if that password is matches door has to open. Otherwise buzzer has to on.
Applications :
Industrial applications
House hold applications
Business applications