PERSONAL MEDICAL
MONITOR
Jason Ewing, Morgan Hinchcliffe, Dina Irgebayeva and
Aida Kulmambetova
1. Problem Situation



Heart disease, cancer, and diabetes are chronic
diseases affecting 90 million Americans’ quality of
life
Almost 80% of Americans have one chronic disease,
while over 50% are affected by more than two
System to be developed should be portable, cost no
more than $200 per unit and put into operation in 6
months
(Source: CDC, National Center for Health Statistics)
2. Customer Requirements
Easy to use
 Low maintenance
 Low cost
 Provide continuous care anytime, 24 hours a day
 Wide range coverage
 Reliable
 Emergency contact
Design Statement
 Provide timely access to a patient's health status to improve
the patient's quality of life and reduce healthcare cost

3. Derived Requirements
I/O Requirements:

Collects health-specific metrics from devices and sends to them to server
Technical Requirements:

2.4 GHz wireless systems, sensors and GPS location tracking transmitting to a server with
online accessible database
Performance Requirements :

If the vitals or tracking information is out of the safe range or emergency button is pressed
specified signal to be sent to server through a 240 kb/s network

Packages of data should be sent to server every 1 hour while there is no emergency case
Cost Requirements:

The cost of development for the implementable system design is less than $44,000
Trade Off Requirements:

System lifetime is 5 years
Test Requirements:

Collect data from sensors every 10 sec with the accuracy ±0.05%
4. Use Case Model
GPS
Location
Monitor
Blood
Pressure
Heart
Rate
Emergency
Button
Emergency
Dispatch
Analyze
Data
Graphic
User
Interface
3rd-Party
Caretaker
5. Concept Exploration

Alternative System Design:
1.
2.
3.

Evaluation Criteria:
1.
2.
3.

Place elderly person in nursing home
Hire stay at home nurse
Connect patient up to conventional vitals monitoring devices
Leads to lack of independence, causes depression
Extremely costly and similar problems to (1)
Limits mobility and uncomfortable
Do Nothing Alternative:

Increase chances of injury and slower response time to emergencies