A product that keeps track of the freshness of milk and inform users through an app interface
This project started out as a simple idea – to give people accurate information regarding freshness of milk without having to taste or smell it. However, it quickly led to hours of research regarding the microbial fauna of milk, its curdling process, and the corresponding change in physical properties.
We eventually determined that the pH and dielectric constant are two easily detectable physical properties that indicate milk freshness. To measure these properties, we incorporated a pH indicator and a self-made capacitor into a custom milk jug.
The Milkwatch jug was successful in detecting changes in microbial level in milk. In addition, we realised that the fact that microbial levels affect the dielectric constant of the medium could have potential in non-chemical based detection of bacteria in water. It can provide almost instantaneous readings at the expense of some accuracy.
For this project, I was given the sole responsibility of designing and fabricating the jug, as well as any rapid prototyping required. To do so, I learnt how to use Solidworks to create CAD models and operate 3D printers to bring the models to life.
Other Works:
Dyson SG
Final Year Project
Mechatronics
Nickel Feeder
Design Thinking and Doing
Dyson Internship
Industrial Design
Robobrawl
