Overview
IEC 61636:2021 (SIMICA) - published jointly with IEEE (IEEE Std 1636) - is an implementation‑independent international standard that defines a software interface for maintenance information collection and analysis. It specifies how information systems should represent, exchange and analyze historical diagnostic, test result and maintenance action data for complex systems comprised of hardware, software, or both. The standard promotes interoperability across automated test systems (ATS) and maintenance data repositories by defining common elements, XML schemas, OWL ontologies and service definitions for API development.
Key topics and technical requirements
- Scope and purpose: Implementation‑independent specification for software interfaces to systems holding diagnostic and maintenance data; supports access, exchange and analysis of historical information.
- Common information model: Defines the common elements shared between test results/session information and maintenance action information to create a consistent data class for the SIMICA family of standards.
- SIMICA family components:
- Test results and session information (IEEE Std 1636.1)
- Maintenance action information (IEEE Std 1636.2)
- Data models and formats:
- Normative XML schemas and OWL ontologies are provided (see Annex A) to support machine‑readable interchange and semantic interoperability.
- EXPRESS models and guidance on schema/ontology naming and publication are included.
- Extensibility and conformance:
- Guidance for XML schema extensibility to support vendor‑specific or domain extensions while preserving interoperability.
- Conformance statements and requirements for implementers to demonstrate compatibility with SIMICA semantics and APIs.
- Diagnostic maturation & usage guidance: Addresses lifecycle of diagnostic information and recommended usage of schemas, ontologies and models across revisions.
Practical applications - who should use it
IEC 61636:2021 is intended for:
- ATS vendors and system integrators implementing standardized APIs to share test results and maintenance records.
- Maintenance engineers and reliability teams who need consistent, analyzable historical diagnostic data across platforms.
- Software developers and data architects building maintenance information systems, analytics pipelines or digital twins.
- Asset managers and MRO organizations requiring interoperable exchange of maintenance actions and test sessions.
- Standards bodies and certification entities evaluating conformance and interoperability.
Benefits include improved interoperability, reduced integration effort, consistent data semantics for analytics and predictive maintenance, and a vendor‑agnostic basis for API design.
Related standards and keywords
- Related: IEEE Std 1636.1 (test results/session info), IEEE Std 1636.2 (maintenance action info)
- Keywords: IEC 61636:2021, SIMICA, IEEE 1636, maintenance information collection and analysis, software interface, API, XML schema, OWL ontology, automated test system, maintenance action information, test results interoperability.