Published
pressure
vr.tr.pressure · thing-pressure
Let an agent handle pressure with units, an absolute, gauge or differential reference and context, and avoid unit and reference confusion.
Thing Registry Physical world and living systems PHY.FLW
Bundle → Layer → Finding → QuestionsClassifiersWhat it isWhy it existsDistinguishing featuresWhat robots and AI may and may not doMoral aspectsOwnersLinks to other meta-modelsIdentity and identifiersDirect propertiesRecognitionCapabilities and actionsHazards and failure modesStandards and interfacesContext of useSources
Bundle → Layer → Finding → Questions Filled
4 bundles · 8 layers · 8 findings · 16 questions
Value How much.
Unit
Pa, bar, psi.
Unit
Unit used.
- In which unit is the pressure given? definition
- What is it in pascals? measurement
Reference
Absolute or gauge.
Reference
Reference type.
- Is it absolute, gauge or differential? boundary
- Relative to what? definition
Measurement Instruments.
Instrument
Gauge type.
Instrument
Instrument used.
- Which instrument measured it? provenance
- Is it calibrated? provenance
Conditions
Temperature and altitude.
Conditions
Measurement conditions.
- At what temperature and altitude? measurement
- Was sea-level correction applied? boundary
Engineering Pressure equipment.
Rating
Maximum allowable pressure.
Rating
Pressure rating.
- What is the maximum allowable pressure? measurement
- Is the equipment certified? provenance
Safety
Relief and inspection.
Safety
Safety devices.
- Which relief devices protect it? definition
- When was it last inspected? provenance
Contexts Weather and health.
Weather
Barometric pressure.
Weather
Barometric reading.
- What is the sea-level pressure, and what does it indicate? measurement
- How is it changing? measurement
Blood pressure
Health context.
Health
Blood pressure information.
- What does official guidance say about this blood pressure reading? provenance
- When should someone see a clinician? action
Classifiers Filled
- Family
- Thing Registry
- Category
- Physical world and living systems
- Entry kind
- noun.phenomenon
- Plane
- PHY
- Domain
- PHY.FLW
- Facets: substance
- energy
- Facets: origin
- natural
- Facets: agency
- inert
- Facets: mobility
- not-applicable
- Facets: scale
- not-applicable
- Facets: affordances
- observable
- Other names and narrower kinds
- acoustic radiation pressure, atmospheric pressure, air pressure, gas pressure, pressure level, force per unit area, barometric pressure, compartment pressure, overpressure, sea-level pressure, hydrostatic head, intraocular pressure
What it is Filled
The force applied per unit area of a surface, measured in pascals; examples include atmospheric pressure, gas pressure, blood pressure and acoustic pressure.
Why it exists Filled
Let an agent handle pressure with units, an absolute, gauge or differential reference and context, and avoid unit and reference confusion.
Distinguishing features Filled
- Force per area, a scalar
- Absolute, gauge and differential references
- Many units in use
- Blood pressure uses mmHg by convention
What robots and AI may and may not do Filled
Must not
- Exceed rated pressure of vessels, pipes or tyres.
- Disable relief valves or pressure alarms.
- Interpret a person's blood pressure as a diagnosis.
- Report pressure without identifying whether it is absolute, gauge or differential and specifying the relevant reference or compared locations.
Only with a human decision
- Isolating or venting pressurised systems requires human review.
May
- Measure and report pressure with units and calibration status.
- Monitor pressure in systems it is authorized to supervise and alert on limits.
Moral aspects Filled
- Pressure failures cause explosions and injuries.
- Blood pressure readings guide medical care and need professional interpretation.
Who is affected
- Workers near pressure systems
- Patients
Owners Filled
Steward
Nobody: a physical quantity; owners answer for their pressure equipment.
Links to other meta-models Filled
parent
- oewn-11439518-n - registry parent class
related
- physical quantity - derived
- force - force per area
- wind - pressure gradients
- pascal - SI unit
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.pressure
- Open English WordNet: oewn-11515441-n
- SI unit symbol: Pa pascal
Direct properties required Filled
- standard atmosphere: 101325 Pa - 1013.25 hPa
- 1 bar: 100000 Pa
Recognition required Filled
- Values in Pa, kPa, bar, psi, mmHg, hPa
- Gauge versus absolute labelling (psig, psia)
- Isobars on weather maps
- Readings on gauges, barometers and monitors.
Capabilities and actions required Filled
- measure it, with gauges and barometers
- convert units
- design vessels and pipes to withstand it
- forecast weather from it
Hazards and failure modes required Filled
- Vessel rupture
- Confusing gauge and absolute pressure
- Unit conversion errors
- Barotrauma in diving and flying
Standards and interfaces required Filled
- SI Brochure
- EU Pressure Equipment Directive 2014/68/EU
- Clinical guidelines for blood pressure measurement
Context of use required Filled
- Describing fluids, weather, engineering loads, sound and physiology.
- atmospheric pressure
- gas and hydraulic pressure
- blood pressure
- acoustic pressure and radiation pressure
- pressure levels in meteorology
Sources Filled
- Open English WordNet 2024, synset oewn-11515441-n - sense and gloss of the concept
- Wiktionary: pressure - word senses and usage
Open questions
- Should pressure kinds be separate entries?
- How should reference type be recorded?
- How should agents present blood pressure without giving diagnosis?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-pressure/spec.json