Project

# Title Team Members TA Documents Sponsor
44 Dog Training Collar
 Gonzalo Pastor Carrascosa
Jihyun Lee
Louis Kim
 Jonathan Hoff design_document1.pdf
design_document2.pdf
design_document3.pdf
final_paper1.pdf
other1.pdf
proposal1.pdf
Group Members:
Jihyun Lee(jihyunl2), Louis Kim(ltkim), Gonzalo Pastor(gonzalo5)

Problem:
Many dog owners face the problem of their dog breaking, damaging, or otherwise interacting with an object or area they shouldn’t. Additionally, owners with multiple dogs may have trouble keeping one dog from eating the other’s food.

Solution Overview:
Our solution is to create a bluetooth-enabled collar system that will spray the dog in the face with citronella spray when the dog approaches the object or region of interest programmed by the user. This spray has been tested and is completely harmless to the animal, with multiple products using this spray already in production.

Our product will be unique in that it allows distance sensitivity to be configured by the user via a free mobile app. Existing products that are most similar implement a similar spraying collar that detects barking rather than distance, or a remote control that triggers the spray. The first product offers a solution to a different problem completely, while the second is inconvenient (when the user is not with the dog, it is completely ineffective).

Solution Components:
1. Sensor(BLE) Subsystem:
The RSSI values from the Bluetooth Low Energy controller(nRF52832) will be used to indicate the distance between the dog and the sensor. When the RSSI value is less than the desired range, the controller will signal the spray to stop the dog. Both the sensor and the collar’s bluetooth device will be on, so that they we automatically connect when the dog enters the connection range.

2. Spray Subsystem:
For the spray that will be activated after it receives a signal from the BLE controller, we will use a mini 12V water pump with a short thin tube for a spray effect.

3. Power Subsystem:
Since all subsystems will be connected to a power source at all times, we plan to use a rechargeable lithium ion battery that can be charged via a micro USB cable.

4. User Interface:
The user interface(app) will be used to program the controller to set the desirable distance.

Criterion for Success:
Since we cannot test the effectiveness on an actual dog, the goal would be to accurately activate the spray at the desired distance.

GYMplement

Srinija Kakumanu, Justin Naal, Danny Rymut

Featured Project

**Problem:** When working out at home, without a trainer, it’s hard to maintain good form. Working out without good form over time can lead to injury and strain.

**Solution:** A mat to use during at-home workouts that will give feedback on your form while you're performing a variety of bodyweight exercises (multiple pushup variations, squats, lunges,) by analyzing pressure distributions and placement.

**Solution Components:**

**Subsystem 1: Mat**

- This will be built using Velostat.

- The mat will receive pressure inputs from the user.

- Velostat is able to measure pressure because it is a piezoresistive material and the more it is compressed the lower the resistance becomes. By tracking pressure distribution it will be able to analyze certain aspects of the form and provide feedback.

- Additionally, it can assist in tracking reps for certain exercises.

- The mat would also use an ultrasonic range sensor. This would be used to track reps for exercises, such as pushups and squats, where the pressure placement on the mat may not change making it difficult for the pressure sensors to track.

- The mat will not be big enough to put both feet and hands on it. Instead when you are doing pushups you would just be putting your hands on it

**Subsystem 2: Power**

- Use a portable battery back to power the mat and data transmitter subsystems.

**Subsystem 3: Data transmitter**

- Information collected from the pressure sensors in the mat will be sent to the mobile app via Bluetooth. The data will be sent to the user’s phone so that we can help the user see if the exercise is being performed safely and correctly.

**Subsystem 4: Mobile App**

- When the user first gets the mat they will be asked to perform all the supported exercises and put it their height and weight in order to calibrate the mat.

- This is where the user would build their circuit of exercises and see feedback on their performance.

- How pressure will indicate good/bad form: in the case of squats, there would be two nonzero pressure readings and if the readings are not identical then we know the user is putting too much weight on one side. This indicates bad form. We will use similar comparisons for other moves

- The most important functions of this subsystem are to store the calibration data, give the user the ability to look at their performances, build out exercise circuits and set/get reminders to work out

**Criterion for Success**

- User Interface is clear and easy to use.

- Be able to accurately and consistently track the repetitions of each exercise.

- Sensors provide data that is detailed/accurate enough to create beneficial feedback for the user

**Challenges**

- Designing a circuit using velostat will be challenging because there are limited resources available that provide instruction on how to use it.

- We must also design a custom PCB that is able to store the sensor readings and transmit the data to the phone.