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13 Wearable device for Amusement Parks
Cherian Cherian
Pooja Kankani
Rohan Khanna
Johan Mufuta design_document1.pdf
design_document2.pdf
design_document3.pdf
design_document4.pdf
final_paper2.pdf
final_paper3.pdf
final_paper4.pdf
other1.pdf
other2.pdf
proposal1.pdf
AMUSEMENT PARK WEARABLE DEVICE

Problem:

Currently amusement parks have very inefficient systems where people end up spending most of their time waiting in lines. Further, it is easy for children to get lost and there is no easy way of finding them. Also since amusement parks are crowded, it’s annoying to carry things like wallets, locker keys etc around with you all the time and it's very likely that you may lose them.

Solution Overview:

Create a wearable device which can be used for various functions such as payments, lockers, food etc. The wearable also contains a gps tracking system which will be valuable for parents trying to find children in large amusement parks. The parents can add a distance parameter on the wearable that alerts them when their child or loved one is greater than a certain distance away from them. An LCD screen can be used as a display for information such as wait times, money remaining, and location of people.

Optional Feature (Based on time ): Ability to call or send messages to each other. Many times in amusement parks, friends tend to get away from each other and it's annoying to carry your phone around, if the wearable gave you the option to send messages, make calls or use as a walkie talkie then it would be easy to stay in touch with each other in the large parks.

Solution Components

Hardware Components:

Microcontroller currently preferred : AdaFruit Flora
Possible candidates based on cost and compatibility with other modules ( such as wifi etc ) :
AdaFruit Gamma
LilyPad Arduino
TinyLily Mini
StitchKit

AdaFruit Flora is an arduino compatible microcontroller that is commonly used for wearable devices. It has an inbuilt gps functionality and hence is our preferred choice currently. It also is a very low power microcontroller which is essential for a wearable device.

GPS module:
AdaFruit Flora comes with a GPS module attached to it so we plan on using that for the GPS
Neo gps 6M is compatible with the lilypad arduino.
For the GPS, we will have a different parent and child watch. So, the parent watches are always tracking their own location as well as all the child watches. If the distance between the parent watch and any child watch linked to it is greater than a certain amount, we will send out an alert.

RFID Components:
RFID Tag :
RFID Transmitter (CTRA1816F)

This will include the RFID transmitter connected to the microcontroller above and attached to the watch. This will be used for payments, unlocking lockers, etc

RFID Reader :
RFID reader (RC522)

This will consist of a RFID reader (RC522) connected to an Arduino. This will be used to mimic the devices in amusement used for payments and unlocking devices etc.

LCD display on watch:
This display acts as the interface to see wait times, get alerts on when to go to a particular attraction and track your friends and family.


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Optional Components if time Permits

*if there is time to enable the walkie talkie feature the messages will be read through the lcd screen

*WiFi module:

A WiFi module connected to the microcontroller to send and receive data to mobile app for saving user profiles, locking, unlocking, adding chores, etc.
*Optional - Could be used for WIFI calling as well if time permits
A compatible wifi module with AdaFruit Flora: ESP32 WiFi-BT-BLE MCU Module / ESP-WROOM-32 (https://www.adafruit.com/product/3320)
A compatible wifi module with lilypad arduino : ESP8266 Esp-12E wifi module

*Optional Walkie Talkie Module if time permits:
SA818 Walkie talkie module with RDA1846S chip
Has a 5km range which can be used for communication since people usually do not like carrying around their phones in amusement parks, especially water parks. Plus in most rides they ask you to remove their phones. And in water parks people don't carry their phones.

*Software Components:
A mobile application that allows the initial set up for being able to use the wearable device inside the theme park. At the start, the user can enter their credit card info in the app and load a certain amount of credits from their credit card into the application. That amount of money will get stored in the wearable device for the user to use, and will be decremented as the user pays, using a local counter on the wearable.
In the end, the app will show an entire summary of the user’s trip: rides done, wait times experienced, bills for food and merchandise purchased. Also, all the images clicked of the user inside the theme park will be available for the user to see on the application.
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Criterion for Success
Locate people wearing the band precisely and display that location on the wearable accurately using GPS.
Wearable properly interacts with the RFID readers for various purposes and the LCD screen displays the appropriate messages.
Software application safely allows credit card payments for loading credits.
The WiFi module can accurately transfer information from the mobile app to the watch and vice versa, for example, loaded credits, photos etc.

Low Cost Myoelectric Prosthetic Hand

Michael Fatina, Jonathan Pan-Doh, Edward Wu

Low Cost Myoelectric Prosthetic Hand

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According to the WHO, 80% of amputees are in developing nations, and less than 3% of that 80% have access to rehabilitative care. In a study by Heidi Witteveen, “the lack of sensory feedback was indicated as one of the major factors of prosthesis abandonment.” A low cost myoelectric prosthetic hand interfaced with a sensory substitution system returns functionality, increases the availability to amputees, and provides users with sensory feedback.

We will work with Aadeel Akhtar to develop a new iteration of his open source, low cost, myoelectric prosthetic hand. The current revision uses eight EMG channels, with sensors placed on the residual limb. A microcontroller communicates with an ADC, runs a classifier to determine the user’s type of grip, and controls motors in the hand achieving desired grips at predetermined velocities.

As requested by Aadeel, the socket and hand will operate independently using separate microcontrollers and interface with each other, providing modularity and customizability. The microcontroller in the socket will interface with the ADC and run the grip classifier, which will be expanded so finger velocities correspond to the amplitude of the user’s muscle activity. The hand microcontroller controls the motors and receives grip and velocity commands. Contact reflexes will be added via pressure sensors in fingertips, adjusting grip strength and velocity. The hand microcontroller will interface with existing sensory substitution systems using the pressure sensors. A PCB with a custom motor controller will fit inside the palm of the hand, and interface with the hand microcontroller.

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