Thursday, February 5, 2009

Project Definition

Project Title: Weight Scale Integrated into Toilet Seat

Project Statement :To design a convenient toilet seat that can measure and display a person's weight accurately, having a user-friendly control panel that is easy to operate.

Primary Objective : To design a toilet seat that can measure the
users' weight and display on a screen.

Secondary Objective : To create a product that is marketable and would appeal to the public.

Constraints :
1. Cost of product
  • The product must be built within the budget of RM250. Strain gauge sensors which are most commonly used in electronics scale are costly about RM 20++ each.
2. Age and physical condition of users.
  • The product can only be used by users who are able to sit on the toilet without the need of external support.
  • This product cannot be used by small kids who cannot sit exactly in the middle of the seat in which cannot cause a balanced pressure for the sensors under the seat.
Functions :
1. Able to measure weight and display.

2. A product that enables user input .
3. Able to calculate users' BMI and display.

Design specifications :
1. Measure the weight between 0 - 150 kg.
2. The height that be input for measuring BMI
is bewteen 0 - 999 cm.

Combined tree : Objectives (rectangles) + Constraints (circles)

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