SMART SECURITY LOCK SYSTEM FOR A SMART CITY Akarshan, Rajeev Bhupathiraju, Mithilesh, Jahnavi Department of Electrical & Computer Engineering, Wayne State University Advisor: Harpreet Singh ABSTRACT CONCEPT RESULTS SCHEMATIC DIAGRAM TRUTH TABLES CONCLUSIONS AND FUTURE SCOPE Initially the system will be in unarmed state. The password has to set and pound symbol is to be pressed to lock the system. Now the system is in locked state. Once the correct code or password is entered, the door goes to open state and the concerned person is allowed to access the secured area. If the password entered is wrong, the fail count increases and the door remains in closed state. The alarm buzzes when the fail count reaches the maximum. If the password has to be changed, enter the master key when the door is in open state and then enter the new password to change. In alarm state give the password and the master key to unarm. PROCEDURE Security is the degree of resistance to or protection from harm. It is an essential aspect especially in case of home security. An electronic lock is a device which has an electronic control assembly attached to it. They are provided with an access control system. This system allows the user to unlock the device with a password. The password is entered by making use of a keypad. The user can also set a password to ensure better protection. This project is developed using FPGA. LEDs 7 to 2 are used to represent the output states alarm, locked, armed, fail and open. The toggle switch SW7 is used as door signal. Since row and column signals are to be given simultaneously we short the row and column to work on the FPGA board without any extra equipment. Row[3] = Col[2], Row[2] = Col[1], Row[0] = Col[0] are shorted making 1,5,# available. Row[1] is set to 0. LED7 is turned on when the alarm buzzes. LED6 is turned on when the door is in locked state. LED5 is turned on when armed. LED4 is turned on when the password entered is incorrect i.e. fail state. LED3 is turned on when the door is opened. STATE DIAGRAM State Alarm Locked Armed Fail 000 Unarmed 0 0 0 0 001 Locked 0 1 1 0 010 Open 0 0 1 0 011 Fail 0 1 1 1 100 Alarm 1 1 1 0 R3 R2 R1 R0 Row1 Row2 1 X X X 0 0 0 1 X X 0 1 0 0 1 X 1 0 0 0 0 1 1 1 C2 C1 C0 Col 1 Col 2 1 X X 0 0 0 1 X 0 1 0 0 1 1 0 RTL SCHEMATIC This password based smart security lock system is used in places where more security is needed. This system can be used to secure lockers and doors. As future scope, we can add fire and LPG sensors so that in case of emergency the door opens automatically.