Question

You are hired to develop an automatic patient monitoring system for a home-bound patient. The system is required to read out the patient’s heart rate and blood pressure and compare them against specified safe ranges. The system also has activity sensors to detect when the patient is exercising and adjust the safe ranges. In case an abnormality is detected, the system must alert a remote hospital. (Note that the measurements cannot be taken continuously, since heart rate is measured over a period of time, say 1 minute, and it takes time to inflate the blood pressure cuff.) The system must also

(i) check that the analog devices for measuring the patient’s vital signs are working correctly and report failures to the hospital

ii) alert the owner when the battery power is running low.

Consider the ABOVE automatic patient monitoring system described.

IDENTIFY THE ACTORS AND THEIR GOAL. BRIEFLY, IN ONE SENTENCE, DESCRIBE EACH USE CASE. ALSO, DRAW THE "USE CASE" DIAGRAM.

Answer 1

Solution for the above problem:

1)Patient: The target actor responsible for designing the system. All interactions are done from the user

2)Device:This refers to an automatic patient monitoring system design

3)Hospital Personnel: This actor is for treating the abnormalities.

Goals:

1)check heart rate

2)check blood pressure

3)activity sensor: To detect when patient is exercising and adjust the safe range.

4)check analog devices: To check patients vital signs   

5)battery report: A check about the battery power

6)abnormalities report: Report to the hospital personnel if their are abnormalities

7)alert battery report:Alert the owner

Note:battery report can be skipped because use-case diagram only gives the outlook view and the battery report is made only by the condition if battery is low.

Use case Diagram :