Printing:This poster is 48” wide by 36” high. It’s designed to be printed on a large

Customizing the Content:The placeholders in this formatted for you. placeholders to add text, or click an icon to add a table, chart, SmartArt graphic, picture or multimedia file.

Tfrom text, just click the Bullets button on the Home tab.

If you need more placeholders for titles, make a copy of what you need and drag it into place. PowerPoint’s Smart Guides will help you align it with everything else.

Want to use your own pictures instead of ours? No problem! Just rightChange Picture. Maintain the proportion of pictures as you resize by dragging a corner.

The NXP Hexiwear Child Seat Sensor device will be a

user friendly device that can be used to monitor the

presence of a child inside a vehicle. The device will

use to its advantage the constraint of limited

Bluetooth range as a proximity sensor and switches

placed in the seat to detect pressure on the seat.

When the driver or parent/guardian’s device

connected to the Bluetooth happens to be out of

range and the last report sent to the device is that

pressure was detected in the seat, the driver’s

device will receive an alert saying that a child has

been left unattended in the car seat.

• The user will interface with the system through

two methods; the Mobile Application & Seat

Sensor

• The hardware interfaces include the seat sensor

and the seat sensor module

• The software interfaces will consist of the mobile

application communicating with the Hexiwear

Module

Adam Banuelos, Tristian Blocker, Katerina Goldstein, Kenneth ShirleyGregory Camuzat, NXP Sponsor Dr. William Stapleton, Faculty Advisor

Four BlueTooth 4.0 (BLE) seat modules can be paired

with a mobile device concurrently in normal usage

conditions. Because the system will not need to

differentiate between which seats are occupied,

occupying any paired seat sensor will be enough to

keep they system on alert for an unattended child

condition.

• Hardware Platform: Hexiwear

• Compatible with Kinetis Design Studio

• Programming Platform: MBED OS

• Mobile Application: Customized Wolksense

Application

• GPS coordinates to locate vehicle as an additional

safety feature

• 3-D print a container for the seat module

• Seat Sensor that activates system when weight is

present

• Visual and Auditory notification that the system is

active

• Confirmation of connection to user’s phone

• Notification system via phone application

• Secondary notification system via phone

application

Research completed for Hexiwear components

• Hexiwear

• Hexiwear Power Supply

• Switches

Research completed for Mobile application

• Simultaneous Bluetooth connections possible

• Tools necessary for programming mobile

application

• Bluetooth connection range

• Assemble Hardware

• Write Code for Seat Module

• Write Code for Phone Application

• Test Code

• Test System

• Stretch Goals

• Senior Design Instructors: Dr. Cecil Compeau, Lee

Hinkle

• Faculty Advisor: Dr. William Stapleton

• NXP Sponsors: Dr. Kevin Kemp, Gregory Camuzat

• Senior Design II Mentors: Jedidiah Harrah, David

Mejia, Sammy Solis

• Administrative Assistant: Sarah Rivas

Administrator will install mobile application and is

responsible for the initial Bluetooth paring of

mobile device and seat module

In the event that the driver is unresponsive to the

initial alerts, an emergency contact is required to

ensure the safety of the child. The main

administrator will have the ability to edit

emergency notification contact information

• False Alert: User will have five minutes to

respond before the secondary contact is notified

• Child was removed from car seat but system did

not receive signal from mobile: System will shut

off automatically after five minutes to conserve

power

Adam Banuelos Tristian Blocker

Katerina Goldstein Kenneth Shirley

Hardware Performance Parameters

ParameterTest

ConditionsMin Max Units How Tested

Buzzer Vs = 5.0 V 3 5 V Apply voltage and confirm audio output

HexiwearDocking Station

Vs = 0 3.3 5 VMeasure with voltmeter over the supply

range

LEDVs = 3.3 VIs = 20 mA

20 50 mA Apply voltage and confirm polarity direction

Push Button

Continuity 0 ∞ ΩMeasure continuity with multimeter while

depressing

Software Performance Parameters

Function Description How Tested

User

Emergency

Information

The user will be able to input

emergency contact information

and the device will notify the

contact in the time of an

unresponsive driver.

Ensure that the correct

emergency contact is

notified when there is

pressure applied on

the tactile switch and

the driver is out of

Bluetooth range

Bluetooth

Connection

The Bluetooth’s operation range

is 100 meters. When the driver is

out of Bluetooth range and a child

has been detected in the seat, the

emergency contact is notified.

Move the device

connected via

Bluetooth at various

distances

Hexiwear

Application

Loads in 30 seconds or less Use a stopwatch to time

bootup duration

Platforms

The system will run using the

Hexiwear development

platform and an Android

compatible mobile application

Test all functions listed

above

Features Performance Target

Standard Buzzer Confirmation Sound

Hexiwear Docking Station Connectivity

LED Visual Verification

Push Button Weight Sensor

Hexiwear Development Platform