Need statement

A home food outlet prepares soft drinks and stores them in plastic bottles because of increasing demand, the owner wishes to go for automating bottle capping

1.1 Question and answer

Table 1: Questions and answers

sl.no	Questions	Answer	Objective
1.	Should the machine be automatic or manual?	The machine should be semiautomatic	objective
2.	Machine shoud be fixed or portable?	The machine should be portable	Objectives
3.	What should be the maximum weight of machine?	Less than 2kgs	Constraint
4.	What should be the size of machine?	Dimensions 1.5ft X 1.5ft X 1.5ft	Constraint
5.	How many caps should be fixed per minute?	At least two caps per minute	Constraint
6.	What should be the size of the bottle used?	One litreBisleri bottle	Constraint
7.	Should the machine be user friendly?	Yes	Objective
8.	What other features are expected?	It should have a indicator to signal process completion,It must be clean and hygienic,Should sense the bottle	Function
9.	How much machine can cost?	Try to make it within Rs 4000	Constraint

1.2 :Basic survey and requirements

Table 2:Observation from a literature survey

Sl.No	Observation from Surveys	Requirements
1.	Weight of Machine	It should be easy to carry and transportable
2.	No of operations	The machine should work fine for at least 8 to 10 attempts
3.	Cost	Machine should be built with minimum budget
4.	No of bottle to be capped	The machine should cap two bottles per minute
5.	Materials to be used	Materials used to build, must be non toxic and light 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 should be hyginic.
04	Machine should be Userfriendly

Problem definition version 1.1 :-

Design a semi-automatic bottle capping machine, which is able to do accurate and hygienic capping process,it should be portable and user-friendly

1.4 Identify constraints

Step 1:Prepare a list of design constrains

Table 4: Idebtified constraints

Sl.no	Constraints
01	Machine should be less weighted.
02	Dimensions 5 cubic ft
03	Machine should fix at least two caps per minute.
04	One litre bisleri bottle should be capped.
05	Machine should cap one bottle at a time.
06	The machine should work for 3 HRS continuously.
07	Machine should be durable for 8 to 10 uses.
08	It must be made up of non-toxic material.
09	Cost of the machine should be within Rs-4000

Problem definition version 1.2 :-

Design a semi-automatic bottle capping machine, which is able to do accurate and hygienic capping process, it should be portable and user friendly.Machine must not exceed the volume of 5 cubic feets , should be able to cap atleast two bottles (each 1 litre) per minute, budget to build should not exceed Rs. 4000andit should work for 3 hours continuously.

1.5 Establish Function

Step 1: Prepare a list design function Table 5 : Identified Function

Sl.No	Function
01	Cap the Bottle.
02	Capping is done clean and tightly to ensure safety.
03	indicate that process has been completed to the user
04	Detect the level of liquid in the bottle
05	Detect the bottle
06	Hold Bottle

Problem definition version 1.3 :-

Design a semi-automatic bottle capping machine, which is able to do accurate and hygienic capping process, it should be portable and user-friendly. Machine must not exceed the volume of 5 cubic feet, should be able to cap at least two bottles (each 1 litre) per minute, budget to build should not exceed Rs. 4000 and it should work for 3 hours continuously. Machine should indicate the user after capping process is completed and should not do capping in case if bottle is empty/partially filled.(Detect the level of liquid in the bottle)