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Group 839b, HCI, slide 1
Designing the MoDiaMan
- an example of user centric design
Anders and JesperGroup 839b
Group 839b, HCI, slide 2
Usability lab
● An important tool – chance to review functional prototype.
● Inspired to pursuit some issues:● Pen -> Requires the use of two hands or a table.
● “Send” actions -> Does the user need to be aware during use?
Group 839b, HCI, slide 3
Domain specification
• 20-40 years old• Patient for 5+ years• Basic computer knowledge
(Used to GUIs)• No/Little experience with
mobile/handheld devices
User:
• Daily basis information for ceasure prevention
• Must measure parameters in order to administer the certain dose and type of insulin.
• Parameters to register :
• BG, CH, Injection level and type Exercise (Alcohol, drugs, etc.)
• Statistics
• History and statistics
• Notification and warnings User
Needs:
Group 839b, HCI, slide 4
Domain specification
• Experienced user both with systems and decease
• Capable of supervising users
Doctor:
• Consultation information
• Statistical data from many different users and parameters
• Administrative interface.
• Warning! Doctor
Needs:
Group 839b, HCI, slide 5
Method
Context Analysis:
• Definitions
UML
• Component design-> System concept
• Use-cases
-> Users interact with system
• Activities
-> Understand user and system tasks
Group 839b, HCI, slide 6
Component design
MoDiaMan
BT connectivity
Injection needle
Radio tower
DiasNet
Workstation
Doctor User
c
2GPRS connectivity
Group 839b, HCI, slide 7
Use-cases
Perform BGmeasurement and inject insulin
MoDiaMan
Doctor
Timer
Report exerciseamount
Report carbonhydrate intake
Reporting
«uses»
«uses»
Access statisticalinformation
Calculate BGprediction
Alarm of when toeat
Alarm of when tomeasure
Show statistics
Alarm notify error
«uses»
User
Group 839b, HCI, slide 8
Activities
Insulin PenUI BG meterPDA
Take blood sample
Measure BG levelInput blood strip to BG meter
Send BG level to UE
Display BG level
Accept/Reject dose
Hide BG level
Display bars and type
User can reject in two ways:On a button on the pen, and in the GUI on the PDA.
Display bars, type and reject button.
[Reject]
Adjust measurement
Inject
[Accept]
Reset
Use-case: Perform BG measurement and inject insulin
Group 839b, HCI, slide 9
Activities● Interface using natural devices:
– Smart phone, BG meter, insulin injection pen
● Two-”touch” administering routine– BG measurement– Insulin injection
● User needs no further interaction with the system than strictly necessary
● Smart phone facilitates additional GUI features for exercise and carbon-hydrate reporting
● Both smart phone and workstation provides means for external access to statistical information
Group 839b, HCI, slide 10
Lo-fi prototype I
Group 839b, HCI, slide 11
Lo-fi prototype II
Group 839b, HCI, slide 12
Questions/discussion
● Any questions?
