Annex A - Group Research Proposal

ISS Group F research proposal
School of Science and Technology, Singapore
Class: S2-06

Yong Yun Jing
Rhys Toh
Marcus Ang
1 Indicate the type of research you’re doing
[ ] Test a hypothesis: Hypothesis-driven research
e.g. Investigation of the antibacterial effect of chrysanthemum

[ ] Measure a value: Experimental research (I)
e.g. Determination of the mass of Jupiter using planetary photography

[    ] Measure a function or relationship: Experimental research (II)
e.g. Investigation of the effect of temperature on the growth of crystals

[ ] Construct a model: Theoretical sciences and applied mathematics
e.g. Modeling of the cooling curve of naphthalene

[ ] Observational and exploratory research
e.g. Investigation of the soil quality in School of Science and Technology, Singapore  

[  X  ] Improve a product or process: Industrial and applied research
To design a door lock which is able to be unlocked by the phone.

A question or problem being addressed:

People from around the world are all used to the lock on their doors as a form of security to protect their homes. What would happen if we were to improve this design? And since forgetful people tend to lose their keys easily, we have decided to redesign the door lock. Our project aims to let users unlock the doors just like how they would unlock their phones.

Project objective:
We want to design a door which can be unlocked by a phone since people tend to lose their keys occasionally. This will help those people and it will provide a better security system, since an electronic door lock is harder to break through using conventional methods still used by burglars nowadays.
Diagram of Experimental Setup:

This set-up will be roughly how our experiment will be like. This design allows us to keep the size of the door lock to be as small as possible, also, this compact design also lets us easily install the door lock to almost any conventional door. Also, this also works for both Apple and Android devices, so people wouldn’t have difficulty opening the door if they have neither of devices.

  Expected Outcomes:
There will be a specially designed app which will unlock the door when a button is pressed. The door will also lock itself when the door is closed, to ensure extra safety. Range of which the app is efficient will be 2m and would take a maximum of  5 seconds for the door to fully unlock. This door can also be unlocked by both an iPhone or an Android device.
Alternative designs/solutions:
Design A:
This design is simple and compact. The items required to do this set-up is really little, and thus, would reduce production costs of the prototype. However, this design requires the Arduino unit to be constantly connected to a laptop for power, and the door would be only unlocked with an iPhone. Design B:
This is the diagram of our final solution of the problem. This system uses two arduino units connected to two Annikken Andees and it is capable of detecting signals sent from both Apple and Android powered devices. This will allow people who are using both the devices to unlock the door without having to buy the specific device to unlock the door.
Best possible solution and reason:

Design C is the best possible solution as this design is extremely efficient and it also the most simple of the 3 since it uses the least amount of materials and it uses a GPS tracker which is inside the box itself. This allows the app to be able to detect the location of the box itself, instead of detecting the presence of the box, which wouldn't help much at all. The signals sent from the trackers would be at a constant rate of 1 per minute, so the whereabouts of the box will be constantly updated; just in case it gets taken.

1) 30m tracking range
2) 1 full scan per second
3) 100ms-2s per complete signal output
4) BLE: 1cm x 2cm x 0.5cm
Tracker: Roughly the size of a 20¢ coin
Desktop: iMac
App software: Xcode
5) Not waterproof
Not shockproof
Cannot withstand power surge
6) Costs about $47 to maintain

Description in detail of method or procedures:
1) Put crates on the shelves
2) Connect proximity sensor to shelves where crates can be detected
3) Connect BLE to proximity sensors in a circuit pattern
4) Setup Raspberry Pis to receive signals when BLE is activated
5) Broadcast signals from the current location (box) to the phones we are using
6) Phone will show distance and location to the box

*If crates are removed, BLE inside crate will continue showing location for the lifespan of the battery inside BLE.

Equipment List:
Proximity Sensor

$0 (Borrowed)

Apple Developer Account
iPhone 4-5s
1x of each (5 phones total)
$0 (Borrowed)
Raspberry Pi

Empty Crates
Metal Storage Shelves
A4 Logbook

Potential risks and safety issues:

-The signals emitted from all the trackers might cancel each other out, causing difficulty in tracking and data analysis.
-Glitches and bugs in the bluetooth tracker could cause temporary/permanent data loss or temporary/permanent loss of connection.
-Excess heat or exposure to water could permanently damage the tracker.

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