IAES — Industrial Asset Event Standard

A vendor-neutral event format for industrial asset measurements, diagnoses, and maintenance intents.

Industrial systems speak different languages. A vibration sensor outputs raw waveforms. An AI model outputs health scores. SAP expects maintenance notifications. PI System expects tag values. MaintainX expects user variables.

IAES provides the neutral layer in between — one event format that any producer can emit and any consumer can understand.

Sensors --> Intelligence --> IAES --> Connectors --> Enterprise Systems

Part of IAES

The standard ships as four packages that version together. The first two numbers of a package version are the specification it implements — 2.0.x implements IAES 2.0.

Specification, JSON Schemas and governance: iaes.dev.

Install

pip install iaes                      # Python
npm install @iaes/sdk                 # TypeScript / Node.js
npm install node-red-contrib-iaes     # Node-RED

Publish Events

The SDK includes a Client that sends IAES events to any compliant endpoint via HTTPS.

Python:

from iaes import Client, AssetMeasurement

client = Client("https://your-endpoint.example.com", api_key="your-key")
event = AssetMeasurement(
    asset_id="MOTOR-001",
    measurement_type="vibration_velocity",
    value=4.2,
    unit="mm/s",
    source="acme.sensors.plant1",
)
result = client.publish(event)

TypeScript:

import { IaesClient, AssetMeasurement } from "@iaes/sdk";

const client = new IaesClient("https://your-endpoint.example.com", {
  apiKey: "your-key",
});
const event = new AssetMeasurement({
  asset_id: "MOTOR-001",
  measurement_type: "vibration_velocity",
  value: 4.2,
  unit: "mm/s",
  source: "acme.sensors.plant1",
});
const result = await client.publish(event);

The endpoint URL is any IAES-compliant receiver — your own backend, a cloud broker, or a third-party integration.

Examples

Vibration measurement

from iaes import AssetMeasurement

event = AssetMeasurement(
    asset_id="MOTOR-001",
    measurement_type="vibration_velocity",
    value=4.2,
    unit="mm/s",
    source="acme.sensors.plant1",
    units_qualifier="rms",           # ISO 17359
    sampling_rate_hz=25600,
)
payload = event.to_dict()  # IAES wire format, ready for json.dumps()

import { AssetMeasurement } from "@iaes/sdk"

const event = new AssetMeasurement({
  asset_id: "MOTOR-001",
  measurement_type: "vibration_velocity",
  value: 4.2,
  unit: "mm/s",
  source: "acme.sensors.plant1",
  units_qualifier: "rms",
  sampling_rate_hz: 25600,
})
const payload = JSON.stringify(event)  // toJSON() called automatically

Energy / power quality

from iaes import AssetMeasurement

pf_event = AssetMeasurement(
    asset_id="SUBSTATION-A",
    measurement_type="power_factor",
    value=0.82,
    unit="ratio",
    source="ion8650.meter_01",
)

thd_event = AssetMeasurement(
    asset_id="SUBSTATION-A",
    measurement_type="thd_voltage",
    value=6.3,
    unit="%",
    source="ion8650.meter_01",
)

AI health diagnosis

from iaes import AssetHealth, Severity

event = AssetHealth(
    asset_id="MOTOR-001",
    health_index=0.16,
    severity=Severity.CRITICAL,
    failure_mode="bearing_inner_race",
    rul_days=5,
    recommended_action="Replace bearing immediately",
    source="ai.vibration_model",
    iso_13374_status="unacceptable",   # ISO 13374
    iso_14224={                         # ISO 14224
        "mechanism_code": "1.1",
        "cause_code": "1",
        "detection_method": "VIB",
    },
)

Work order intent

from iaes import WorkOrderIntent

event = WorkOrderIntent(
    asset_id="MOTOR-001",
    title="Replace bearing DE — AI diagnosis critical",
    priority="high",
    triggered_by="ai_diagnosis",
    recommended_due_days=3,
    source="ai.vibration_model",
    source_event_id="<health_event_id>",  # links to the diagnosis
)

Maintenance completion

from iaes import MaintenanceCompletion

event = MaintenanceCompletion(
    asset_id="MOTOR-001",
    work_order_id="WO-2026-0042",
    status="completed",
    actual_duration_seconds=7200,
    failure_confirmed=True,
    failure_mode="bearing_inner_race",
    source="cmms.sap_pm",
)

Validate

from iaes import validate, ValidationError

try:
    validate(event.to_dict())
    print("Valid IAES event")
except ValidationError as e:
    print(e)

Requires: pip install iaes[validate]

Deserialize

import json
from iaes import from_dict

# Any IAES envelope -> correct model instance
wire = json.loads(mqtt_message)
event = from_dict(wire)  # AssetMeasurement, AssetHealth, etc.
print(event.asset_id, event.value)

Event Types (v2.0)

Enums

All enums accept either the enum constant or a plain string:

AssetHealth(asset_id="M-001", severity=Severity.CRITICAL)
AssetHealth(asset_id="M-001", severity="critical")  # also works

Wire Format

Every event serializes to the same envelope structure:

{
  "spec_version": "2.0",
  "dataschema": "https://iaes.dev/schema/v2/asset.measurement",
  "event_type": "asset.measurement",
  "event_id": "a9e3c4b2-...",
  "correlation_id": "3b2f9d8c-...",
  "timestamp": "2026-03-08T12:00:00+00:00",
  "source": "acme.sensors.plant1",
  "content_hash": "8a3f9c2e1b4d7e6f",
  "asset": {
    "asset_id": "MOTOR-001",
    "asset_name": "Motor Bomba P-101",
    "plant": "Planta Norte",
    "area": "Turbinas"
  },
  "data": {
    "measurement_type": "vibration_velocity",
    "value": 4.2,
    "unit": "mm/s",
    "units_qualifier": "rms",
    "sampling_rate_hz": 25600
  }
}

dataschema is the canonical URI of the schema the payload was written against — the SDKs derive it from event_type and omit it for a custom type that has no published schema.

content_hash is a 16-char SHA-256 prefix of the data payload, computed identically in Python and TypeScript for cross-language idempotency.

Standards referenced

IAES cites industrial standards where they supply context or a vocabulary defined outside it. Citation is not conformance, and IAES 2.0 claims none to ISO 13374, ISO 17359, ISO 14224 or ISO 55000.

Earlier IAES material described a field-level mapping to those four documents. IAES 2.0 withdrew that claim where the correspondence had not been verified against the cited document. The full table, including what the schemas do and do not enforce, is in IAES_SPEC.md under References — the specification governs. All these fields are optional; 1.x events remain valid.

Zero Dependencies

The core SDK uses only standard library. No runtime dependencies.

Cross-Language Compatibility

Both SDKs produce identical wire format and identical content_hash for the same data. Events created in Python validate in TypeScript and vice versa. This is tested on every commit.

Node-RED

node-red-contrib-iaes provides 7 nodes for visual IAES workflows:

npm install node-red-contrib-iaes

Official Specification

IAES-RFC-001 — Industrial Asset Event Model DOI: 10.5281/zenodo.18973217

• GOVERNANCE.md — Normative. Stewardship, compatibility policy, schema identity, and how the standard changes
• IAES-RFC-001 — Formal RFC specification
• IAES_SPEC.md — Full specification
• schema/ — 8 JSON Schema files
• examples/ — 11 JSON examples
• iaes.dev — Website

Design Principles

1. Vendor neutrality — No dependency on any specific platform or system
2. Legacy compatibility — Maps cleanly to CMMS, historians, SCADA, IoT
3. Event-oriented — Each object represents something that happened
4. Complete traceability — event_id + correlation_id + source_event_id chain
5. Extensibility — data payload allows new fields without breaking consumers

System Compatibility

How to Cite IAES

If you use IAES in research or industrial systems, please cite:

Garza, G. (2026).
Industrial Asset Event Standard (IAES) v1.3.
Zenodo.
https://doi.org/10.5281/zenodo.18973217

BibTeX:

@software{garza_iaes_2026,
  author       = {Garza, Gilberto},
  title        = {Industrial Asset Event Standard (IAES)},
  version      = {v1.3.0},
  year         = {2026},
  publisher    = {Zenodo},
  doi          = {10.5281/zenodo.18973217},
  url          = {https://doi.org/10.5281/zenodo.18973217}
}

ResearchGate

• Preprint: IAES: An Open, ISO-Aligned Event Standard for Industrial Asset Intelligence
• Dataset: IAES JSON Schemas & Examples v1.3

License

IAES is an open specification. The specification text and JSON schemas are licensed under CC BY 4.0. Implementations may use any license.

IAES v2.0 — September 2026