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Heart Welcome Guard Technologies
New Product Presentation
Company Structure
BRYAN SCHURKO CEO STEPHEN CZERNIEJ CFO JOHN AZER VP OPERATIONS VAHID SHABABI VP MARKETING
Background & Motivations
Why did we choose this Project? Why should you buy this product and not the similar one?
Cost Analysis Functionality
Time Line
How We Approached? Why We finished On-Time (Maybe a bit early!!)
Life Guarding and Rescue Scenarios
What does a lifeguard do? How does a lifeguard deal with emergency situations? Vitals Airway, Breathing, and Circulation
Changes in the Lifesaving World
Lifeguards are unable to find pulses in emergency situations creating stress and poor first aid assessments.
New Protocol
No check for Pulse/Circulation in victim assessment - considered ineffective. Give CPR to victims if not breathing ASAP, regardless of signs of circulation
The Need to Find Circulation in a Victim for a Lifesaver/Rescuer
To limit stress and shock for the rescuer. To ensure fast assessment and proper first aid for victims. To relay accurate and effective information to the paramedics.
Hardware Overview
Waterproof box Sensor circuit PIC Microcontroller LED display Infrared Sensor Audio Cable Battery Switch
Waterproof box
Reasons for choosing this box:
1. 2. 3. 4. Waterproof Unique color that sticks out Hard to break or crack (Better durability) Easy access to internal components such as the battery, PIC, etc.
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Sensor Circuit
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Filter
Contains capacitors and resistors of certain value, designed to filter out noise picked up from the surroundings
Main Sensor Circuit
Detects every heart pulse. Major component is: LM6484 CMOS OpAmps Benefits: 1. Does not need a negative rail like most opamps, hence, only one battery is necessary for powering it. 2. Low power consumption. 3. Convert the input signal to a rectangular wave (simplifies signal analysis)
One-Shot Timer
Removes extra pulses in the digital signal coming from the main sensor circuit. Composed of a 555 timer Benefits: 1. Found in almost all electronic stores 2. Reliable 3. Easy to use
PIC Microcontroller
Model: 16F877A
Analyses the signal coming out of the one-shot timer. Benefits: 1. A group member (Bryan Schurko) was well experienced with this model. 2. Cheap compared to other microcontrollers 3. Provides many I/O's 4. Low power consumption
LED Display
Heart pulse is displayed on a 7-segment display.
LED Benefits: 1. Cheaper than an LCD display 2. Easier to program than an LCD 3. Consumes less power than an LCD
Infrared Sensor
Model: Cateye Clips onto human finger Contains Led infrared transmitter on one side, and a receiver on the other side. Other end of the sensor connects to an audio connector.
Audio Cable
The sensor jack goes into an audio cable. Audio cable goes through the box, into the sensor chip, for pulse detection.
Battery
9V Alkaline Battery 5V voltage Regulator is used to step down the 9V coming out of the battery, into 5V, which goes into the sensor circuit.
Switch
External to the box Covered with a waterproof casing.
System Overview
External Internal Circuitry Display
Ear sensor
Signal Filter and Amplifier
CMOS Circuit
PIC Microcontroller
7-Segment LED Display
Small non-invasive finger probe Detects light levels by using a infrared LED and photo-sensor
Hemoglobin absorbs photons, sensor detects this
Infrared Pulse Sensor
Analog Signal Conditioning
Small, noise prone signal output by sensor Intermediate circuit Filters, amplifies, and converts to discrete levels
Original (Sensor) Signal Filtered/Amplified Signal Discrete Signal
Processing: Microcontroller
PIC Microcontroller accepts digital signal from circuit Contains pulse error sensing algorithms Averages previous 10 pulses to suppress errors
Digital Signal
Detects Period
Determines if pulse width is adaquate
Average pre...