SafetyOriented Programming Model - PowerPoint PPT Presentation
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SafetyOriented Programming Model
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The failure and unreliability can result in strong feeling of betrayal and frustration. Intelligent Environment Affects Numerous Aspects of the Daily Life ... – PowerPoint PPT presentation
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Title: SafetyOriented Programming Model
1
Safety-Oriented Programming Model
- Pervasive Computing Systems are Intimate
- The failure and unreliability can result in
strong feeling of betrayal and frustration - Intelligent Environment Affects Numerous Aspects
of the Daily Life - Ensure Safety of the System by Ensuring Safety of
All Entities and the Environment as a Whole - Safety Enforcement is accomplished by the
collaboration at both implementation/ compilation
time as well as runtime.
2
3500F !!
Conflicting Directives
Invalid Op. Parameters
No Emergency Handling
Not Abide by Users Wishes
3
Safety Vs. Expressiveness
4
Interrupt Exception Handling
5
The Four Elements
- Device
- Service
- User
- Space
6
Safety Measure for Device
- Automatically appended exception handling routine
- Device Safety Avoid conflicting directives and
unsafe/unacceptable operations, similar to
Electric Breaker - Regulate the incoming commands and detect
abnormal command/access pattern - Using maximum and minimum values to filter or
red-flag abnormal values
7
Modeling of Services
Services
Services
Service Registry
Services
Services
Services
Devices
Binded
Programmed
User Preference
Aligned
Terminated
User Preference Change Event
Service/Device Change Event
Service Behavior 1
Service Behavior 2
Service Behavior n
.
8
Safety Measure for User
- User Safety 1 Smart space should monitor users
status and activate emergency measure should
users appear to be in danger using the mechanism
for Space Safety - User Safety 2 Smart space should function to
serve users preference and obey users order
using the mechanism for service safety
9
Safety Measure for Space
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