Transcript Type Name Description

The
Smart/Safe
Car Seat
SENIOR DESIGN I
MIDTERM PRESENTATION
Our Team
Le’Quala Jackson (CPE)
Andrew Evans (EE)
Advisor:
Dr. Raymond Winton
Sam Stockstill (EE)
Kyle Willis (EE)
Outline

Problem

Solution

Flow Chart

Constraints

Technical

Practical

Approach

Timeline

Questions
Problem

Extreme temperatures are reached in minutes
inside vehicles when turned off

Caregivers getting out of daily routine and/or in
an extreme hurry

The available electronic technology is not being
utilized
Solution

Device works without the caregiver having to do
anything out of the ordinary

Multiple sensors and Bluetooth module

Multiple catch safes in case one system fails or
goes unnoticed during use
Pressure
Sensor
Flow Chart
Device
Power On
Vehicle Off
LED Timer
Starts
Timer
Times Out
LED
Flashes
Bluetooth
Disconnected
Dangerous
Temperature
Detected
Alert Sent
to Phone
Locks
Alarm
Sounds
Technical Constraints
Name
Description
Temperature
Device must be able to detect temperatures
between 0oF and 120oF.
Pressure Sensor
Device must be able to detect a weight of at
least 5lbs. [2]
LED and Alarm
Device’s LED and alarm alerts must be
distinguishable from other alerts.
Battery Life
Device must have a minimum battery life of at
least 100 hours.
Communication
Compatibility
Device must be compatible with Android OS
and able to communicate with the CAN bus.
The device must also be able to connect to the
caregiver’s cell phone through Bluetooth.
Practical Constraints
Type
Name
Description
Sustainability
Durability
The device must be able to withstand motion
and vibration of the vehicle, coming in
contact with moisture, and a vast range of
temperatures.
Health and Safety
Safety
This design aims to prevent deaths by helping
reduce the problem of caregivers forgetting
their children in vehicles unattended.
Sustainability
The device must be able to work under many types
of conditions:

Moisture

Vibrations and movement from vehicle

Extreme temperatures
Health and Safety
Documented cases of children dying of heatstroke in
United States directly related to being left in vehicles:

2013: 41 [1]

1998 – Present: 602 [1]
Approach
•
Based on previous designs by University design
teams from Vanderbilt (Kidsense Car Seat) and
our MSU (Child Safer Seat)
•
Also based on Graco SmartSeat All-in-One Car
Seat
Pressure Sensor
Range
Area
Price
Flexforce Pressure Sensor
0lbs - 25lbs
1"x1"
$24.95
Force Sensitive Resistor
0lbs - 22lbs
1.75"x1.5"
$7.95
Snap Action Push Button
0lbs - 18lbs
0.453"x0.453"
$5.99
Pressure Sensor
Range
Area
Price
Flexforce Pressure Sensor
0lbs - 25lbs
1"x1"
$24.95
Force Sensitive Resistor
0lbs - 22lbs
1.75"x1.5"
$7.95
Snap Action Push Button
0lbs - 18lbs
0.453"x0.453"
$5.99
Wireless Module
Range
App
Compatible
Price
0m - 30m
Yes
$15.95
Bluetooth Mate Silver 0m - 30m
Yes
$39.95
Bluetooth Mate Gold 0m - 100m
Yes
$64.95
No
$22.95
Bluetooth HC-05
Zigbee
0m - 100m
Wireless Module
Range
App
Compatible
Price
0m - 30m
Yes
$15.95
Bluetooth Mate Silver 0m - 30m
Yes
$39.95
Bluetooth Mate Gold 0m - 100m
Yes
$64.95
No
$22.95
Bluetooth HC-05
Zigbee
0m - 100m
Temperature Sensor
Range (Celsius) Accuracy
Price
LM60CIZ - Ambient Temperature Sensor
-40o to 125o
+/- 2 Co
$0.88
MLX 90614 - Infrared Thermometer
-40o to 85o
+/- 0.5 Co
$19.95
Temperature Sensor
Range (Celsius) Accuracy
Price
LM60CIZ - Ambient Temperature Sensor
-40o to 125o
+/- 2 Co
$0.88
MLX 90614 - Infrared Thermometer
-40o to 85o
+/- 0.5 Co
$19.95
Microcontroller
I/O Pins
Bluetooth
Compatible
Programming
Language
Price
Arduino Uno
14
Yes
C
29.95
Arduino Lilypad
14
Yes
C
21.95
PIC33
21
No
C
Free
Microcontroller
I/O Pins
Bluetooth
Compatible
Programming
Language
Price
Arduino Uno
14
Yes
C
29.95
Arduino Lilypad
14
Yes
C
21.95
PIC33
21
No
C
Free
Timeline
 Acquired
Child Car Seat
Month
Achievement
 Began coding
for Pic33
August
Research
 Finished Purchasing,
coding for coding
thermal sensor with Arduino
September
 OrderedCoding,
and Received
parts including
new
October
testing breadboard,
car integration,
finish cell
phone
appand new Arduino
bluetooth
module
 Started testing
breadboard
withcoding
Pic33
November
Finish car
integration and
December
Have finished prototype
Testing Breadboard
LED Representing Lock Alert
SW1: Baby Sensor
SW2: Engine On/Off
LED Connected to Timer
PB: Locks
Bluetooth Connectivity
Child Seat
References
[1] J. Null. (10 July 2013). Heatstroke Deaths of Children in Vehicles [Online]. 1 October 2013.
Ggweather.com. Available: http://www.ggweather.com/heat/
[2] (17 September 2013). Low Birthweight [Online]. www.lpch.org. Available:
http://www.lpch.org/DiseaseHealthInfo/HealthLibrary/hrnewborn/lbw.html
The
Smart/Safe
Car Seat
SENIOR DESIGN I
MIDTERM PRESENTATION