Welcome to Heart 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. Waterproof

2. Unique color that sticks out

3. Hard to break or crack (Better durability)

4. Easy access to internal components such as the battery, PIC, etc.

Sensor CircuitS

igna

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Sig

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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

• 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

Model: 16F877A

LED Display• Heart pulse is displayed on a 7-segment

LED display.• 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

Ear sensorSignal Filter

and AmplifierCMOS Circuit

PIC Microcontroller

7-SegmentLED Display

External Internal Circuitry Display

Infrared Pulse Sensor• Small non-invasive finger probe• Detects light levels by using a infrared LED

and photo-sensor– Hemoglobin absorbs photons, sensor detects this

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

Detects PeriodDetermines if pulse width is adaquate

Average previous 10 proper pulses

Digital Signal To LED Display

Processing: Error Suppression• If the pulses are outside of our defined range or pulse

widths are too small, the pulse will be ignored• Red light turns on when enough pulses are faulty

Signal going into PIC

Visual signal after error suppression

Output: 7-Segment LED

• Output is displayed on three 7-segment displays

• Number displayed in beats per minute

Conclusion

• Out Future Plans– Marketing and Sales

– Technical

Salary

• Total Budget for this Phase $100,000– Bryan 25,000– Stephen 25,000– John 25,000– Vahid 25,000

• It was Based on– Collaboration

We Would Like to Thank

• Dr. Andrew Rawicz

• Mr. Mike Sjoerdsma

• Mr. Brad Oldham

• Ms. Paris

• Bruce Warby - Biomedical Engineering Ridge Meadows Hospital

• Marge Czerniej - Registered Nurse at Ridge Meadows Hospital

• Jusytna Iwan - The Victim - 4th Year Criminology Undergrad

• John Czerniej - SFU Facilities Management • Dr. Ash Parames – Advisor

• Fred Heep - Engineering Lab Technician