1.PROBLEM DEFINATION

Need statement

Automatic door lock security system

1.1 Question and answers

                           Table 1:Question and answers

sl.no	Questions	*Answer	*Objective/Function/constraint
1.	Do you need secure mode of authentication ?	Yes	Objective
2.	What is the budget ?	It should be under Rs 5000	Constraint
3.	Is it automatic or Semi-automatic	Semi Automatic	Objective
4.	Sound and lights for wrong and correct password	Green for correct Red for wrong	Function
5.	What should be the size of machine?	2feet2feet2feet	Constraint
6.	What are the maximum number of attempts ?	3 Attempts Maximum	Constraint
7.	what is the material ?	Acrylic board/ foam board	Constraint
8.	What is the Weight of system ?	2-4 Kg	Constraint
9.	Is it fix or portable ?	portable	Objective
10.	Should it notify if there are some visitors ?	Yes	Function
11.	What must be the time duration until the door gets automatically locked ?	1 Minute	Constraint
12.	Is it for personal or commercial purposes ?	Personal	Objectives
13.	What are the number of digits in the pin ?	4 digit	Constraint

1.2 Basic Survey and requirements

                 Table 2:Observation from a literature survey

sl.no	observations from survey	requirements
1.	Number Of people allowed to enter through door for each entry	Single People entry at a time
2.	Number of attempts during each entry	for each entry number of attempts shoud be 3
3.	maximum weight of machine	It should be easy to carry, portable, and transportable
4.	Cost	Under Rs5000
5.	Materials to be used	Materials used to build, must be user-Friendly ,non-toxic and light in weight

1.3 Identifying Client's Objectives

Step 1:Prepare a list of design objectives

         Table 3:Objectives identified

sl.no	objectives
01	Machine Should be semi-automatic
02	Machine should be portable
03	Machine is for personal use
04	Machine should have LCD and LED display
05	Mode of authentication

Problem definition version 1.1:-

Design a semi-automatic door lock system which will be used for personal Use. It should accurately perform the work with full efficiency and safety.

1.4 Identify constraints

Step 1:Prepare a list of design constraints.

           Table 4:Identified Constraints

sl.no	*Constraints *
01	Weight of machine should between 2-4 Kg
02	Size of machine 12 cm * 12 cm * 12 cm
03	Cost of machine should be under 5000
04	Machine Should allow only 3 incorrect attempts
05	Machine should lock the door automatically after 1 minute
06	Passcode of the machine should be be of 4 digit

Problem definition version 1.2:-

Design a semi-automatic door lock machine which is used for personal use. It should be accurately able to perform the work with full efficiency. Weight of machine should between 2-4 kg,size of machine should not exceed 12cm12cm12 cm, budget to build should be less than 5000 Rs and machine should be able to lock the door after 1 min of unlock.

1.5 Establish Functions

Step 1:Prepare a list of design functions

                 Table 5: identified Functions

sl.no	Functions
01	Machine should notify correct and incorrect Passcode
02	Machine Should notify if their are visitors
03	What kind of sensor to be used

## Problem definition version 1.3:-

Design a semi-automatic machine which is used for personal use. It should be accurately able to perform the work with full efficiency. Weight of machine should between 2-4 kg,size of machine should not exceed 2feet2feet2feet, budget to build should be less than 5000 Rs and machine should be able to lock the door after 1 min of unlock. machine should notify correct and incorrect passcode .