Project

# Title Team Members TA Documents Sponsor
34 Voice Biometrics Lock
 Bella Chen
Lixin Guo
Zaki Khan
 Anand Sunderrajan design_document1.pdf
design_document2.pdf
final_paper1.pdf
proposal1.pdf
**Team:** [Lixin Guo][lixing2], [Bella Chen][aotingc2], [Zaki Khan][zakik2]

# Problem

Losing your keys is not a pleasant experience. Key locks are also at the risk of being picked. Electronic locks (like the [Nest x Yale Lock](https://store.google.com/us/product/nest_x_yale_lock) )are becoming more prevalent for modern homes, but they all use passcodes for entry, which can be stolen. Physiological traits like your voice are unique and can be used as a secure way for verifying your identity. Some of the smart locks on the market may work with voice recognition like Google Home, and you can lock the door from the inside with one command. Yet when you enter from the outside, a passcode is still needed because home devices would not recognize who should not be allowed into the door.

# Solution Overview

We plan to design a lock that works with a real-time speech recognition app to distinguish the voice of the authorized user(s). The user could set a short command to lock or unlock the door, so the lock activates only when the exact command is spoken by the correct person. The lock would be controlled using a Bluetooth receiver that is triggered by a pulse sent from the phone. The benefit of using voice recognition is that the user can unlock the door a short distance away by speaking through his or her phone. We would use a fingerprint sensor as a backup method to verify identity.

# Solution Components

**[Android Application]** - The purpose of this component is to let the users interface with the lock. It would let the users record a command that they would like to use to unlock/lock the door. It would also record the serial number of the device they are using. Then when the person wants to unlock the lock, it would use the command and the serial number of the device being used to verify identity and send a bluetooth signal to the lock to unlock. When the user wants to lock the device, the user would push a button to lock the lock. Here it is not necessary to have voice recognition since we are just locking the device and there is no security concern with this.

**[Bluetooth receiver circuit]** - We would design a PCB that allows a Bluetooth device to control a motor to lock or unlock the door. This circuit would be composed of an oscillator that checks the incoming signal and a flip-flop that would set voltage high momentarily to turn the motor in either direction. Once the application determines the action to lock or unlock, a pulse would be sent from the phone to trigger the Bluetooth device, which turns on the motor.

**[Fingerprint sensor]** - The fingerprint sensor should only be used when a failed voice recognition attempt has been made through a device associated with the user profile, or be required as a second verification step if the user decides to setup 2FA.

**[LED indicator light]** - As a visual aid, a red light would blink when the door is locked and a green light would indicate the door is unlocked. When an attempt to unlock the door fails, the red light would blink quickly.

# Criterion for Success

* We want the device to be able to control the lock and unlock of the door through the user’s voice based on the speech recognition function.

* The app should be able to recognize an authorized device through some form of device identification.

* The status of the lock should be accurately displayed in the app and by the LED indicator light.

* Fingerprint matching should successfully serve as a backup verification method

* Simple UI for easy navigation and user experience

S.I.P. (Smart Irrigation Project)

Jackson Lenz, James McMahon

S.I.P. (Smart Irrigation Project)

Featured Project

Jackson Lenz

James McMahon

Our project is to be a reliable, robust, and intelligent irrigation controller for use in areas where reliable weather prediction, water supply, and power supply are not found.

Upon completion of the project, our device will be able to determine the moisture level of the soil, the water level in a water tank, and the temperature, humidity, insolation, and barometric pressure of the environment. It will perform some processing on the observed environmental factors to determine if rain can be expected soon, Comparing this knowledge to the dampness of the soil and the amount of water in reserves will either trigger a command to begin irrigation or maintain a command to not irrigate the fields. This device will allow farmers to make much more efficient use of precious water and also avoid dehydrating crops to death.

In developing nations, power is also of concern because it is not as readily available as power here in the United States. For that reason, our device will incorporate several amp-hours of energy storage in the form of rechargeable, maintenance-free, lead acid batteries. These batteries will charge while power is available from the grid and discharge when power is no longer available. This will allow for uninterrupted control of irrigation. When power is available from the grid, our device will be powered by the grid. At other times, the batteries will supply the required power.

The project is titled S.I.P. because it will reduce water wasted and will be very power efficient (by extremely conservative estimates, able to run for 70 hours without input from the grid), thus sipping on both power and water.

We welcome all questions and comments regarding our project in its current form.

Thank you all very much for you time and consideration!