Device Sensor & Computing Hardware
Connected devices and computing equipment
Bundle → Layer → Finding → Questions Incomplete
3 bundles · 7 layers · 0 findings · 0 questions
hardware The physical unit and its build
deviceIdentity
make, model, serial, hardware addresses and platform identifiers
platformSpec
compute resources, interfaces, power and environmental ratings
sensing What the device can observe and where readings go
sensingCapability
hosted sensors, observed properties, ranges and accuracy
telemetryBinding
references binding sensors to the streams that carry their output
operation The mutable state that defines behavior
firmwareState
installed firmware versions and update history
configuration
applied configuration profiles and settings
connectivity
network endpoints, reachability and online standing
Note: Legacy card: layers named, findings and questions never written.
Classifiers Filled
- Family
- World Models
- Category
- Physical world and living systems
- Entry kind
- standalone-mm
- Navigation path
- NAV.PHY.OBJ.DEV
- Domain
- PHY.OBJ.DEV
- Industry
- Cross-industry
- Tags
- devicesensorcomputehwphy.obj.dev
- Also called
- M8
What it is Derived, awaiting review
This meta-model describes connected devices and computing equipment: the hardware unit, the sensors it hosts and what they observe, the firmware and configuration it runs, and how it is reached on a network.
Note: First sentence of the legacy card introduction.
Why it exists Filled
Connected devices and computing equipment
Distinguishing features Derived, awaiting review
- It is its own model because a device is the only kind of physical thing whose behavior is defined by mutable software state and whose main output is data streams, so its semantics bridge the matter cluster and the digital cluster in a way no other item family does.
What robots and AI may and may not do Missing, in the backlog
Not described yet. This gap is in the card backlog.
Moral aspects Missing, in the backlog
Not described yet. This gap is in the card backlog.
Owners Filled
Steward
Each device record is stewarded by the device's owner per the catalogue's S1 ownership model; telemetry subscriptions, attestation queries and maintenance access exist only as S1/S2 grants from that owner, with operation-state changes traceable via S4 audit.
Links to other meta-models Filled
extends
- world.physicalItem - a device is an item; identity, custody and location semantics are inherited.
references
- world.equipment - machines are host assets for monitoring devices; the machine's condition data arrives through streams bound here.
- world.vehicle - telematics units mount on vehicles as host assets.
- the digital cluster (D) - the telemetry stream content itself is a digital-cluster object; this model keeps only the binding reference.
imports
- w3c-ssn-sosa - ALIGN: sensor, observation and observed-property semantics.
- w3c-wot-thing-description - ALIGN: capability and interface description of the unit.
requires
- vr.wm-obj-006
What else AI and robots need to interact with it Incomplete
Identity and identifiers required Derived, awaiting review
- telemetryStreamRef: a reference to the stream carrying readings; key attributes: stream identifier, cadence, retention hint.
- configurationProfile: a named set of applied settings; key attributes: profile identifier, parameters, applied date.
- hostAssetRef: the asset the device is mounted on; key attributes: target model, target identifier, mount role.
Direct properties not applicable Not applicable
Not applicable
Institutional or informational subject: no invented physical properties.
Recognition optional Missing, in the backlog
Not described yet. This gap is in the card backlog.
Capabilities and actions required Derived, awaiting review
- deviceProvisioned: the unit was set up, identified and bound to an owner.
- firmwareUpdated: a new firmware version became the current one.
- sensorCalibrated: a hosted sensor's calibration was performed and recorded.
- connectivityLost: the device stopped being reachable at its endpoints.
- connectivityRestored: reachability resumed after an outage.
- configurationChanged: a different configuration profile or setting set took effect.
- deviceCompromiseReported: a security compromise or vulnerability affecting the unit was reported.
- deviceDecommissioned: the unit was retired and its bindings closed.
Legacy events listed as state transitions.
Hazards and failure modes optional Missing, in the backlog
Not described yet. This gap is in the card backlog.
Standards and interfaces required Derived, awaiting review
- telemetryAccess: owner-granted subscription to streams bound to named sensors, scoped by property and period.
- deviceAttestation: query contract by which a party verifies the unit's identity, firmware integrity and calibration standing.
- maintenanceAccess: grant allowing a service party to read operation state and apply firmware or configuration changes.
- inventoryView: identity, model, host asset and lifecycle status across a holding; omits streams and settings.
- observabilityView: sensors, observed properties and stream bindings; omits network addresses and security data.
- securityAuditView: firmware history, configuration changes and compromise reports; omits measurement semantics.
Context of use required Missing, in the backlog
Not described yet. This gap is in the card backlog.
Sources Missing, in the backlog
Not described yet. This gap is in the card backlog.
Open questions
- Superseded by a researched world model? Map this legacy card to its successor or retire it.
Machine files
Provenance
legacy MMAS card (world-models v0.2) · legacy
Built from: models/world-m8-device-sensor-and-computing-hardware/spec.yaml, models/docs/matter-artifacts/M8-device-sensor-and-computing-hardware.md