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The Use of Hardware Abstraction Layers in Automated Calibration Systems. Speaker/Author: Paul Packebush Metrology Group Manager Author: Rishee Bhatt Staff Calibration Engineer. Agenda. Where to find software in calibration systems Instrument Control - PowerPoint PPT Presentation
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The Use of Hardware Abstraction Layers in Automated Calibration
SystemsSpeaker/Author: Paul Packebush
Metrology Group ManagerAuthor: Rishee Bhatt
Staff Calibration Engineer
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Agenda• Where to find software in calibration systems• Instrument Control• Hardware Abstraction Layers
• Industry-Standard• Vendor-Defined• User-Defined
• HAL Architecture• Object-Oriented Design• Pitfalls• Questions
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Software In Calibration Systems
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Instrument Control
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Instrument Service Life
Service Disruptions
• Obsolescence• External
calibration• Hardware
failure
Strategies
• Spare instrumentation
• Software modification
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Hardware Abstraction Layers (HALs)• Layer between hardware and software• Used in modern operating systems• Standardizes interaction with different hardware architectures
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Hardware Abstraction Layers (HALs)
Industry-Standard
Vendor-Defined
User-Defined
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User-Defined HAL Architecture
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Decoupling
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Object-Oriented Design
14Player
Hand
Score
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Inheritance & Dynamic-Dispatch
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Drop-In Replacement
Functionality Concerns
• Does the instrument support the functionality needed?
Accuracy Concerns
• Does the instrument provide the necessary level of accuracy?
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Summary• Benefits of a HAL
• Decoupling• Dynamic Instrument Interchangeability
• Object-Oriented Design• Inheritance• Dynamic Dispatch
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Questions?
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