proposed
equivalent
converter
IRI:
http://www.inf.ufrgs.br/ontologies/copi#Converter
Generated on 2026-06-25
Natural Language Definition
EN
A converter is an assembly designed to receive a physical quantity, signal, or energy in one form and output it in a different physical form, such as converting an electrical current signal to a pneumatic pressure signal or converting electrical energy to another energy form.
PT-BR
Um conversor é um conjunto projetado para receber uma grandeza física, sinal ou energia em uma forma e emiti-la em uma forma física diferente, como converter um sinal de corrente elétrica em sinal de pressão pneumática ou converter energia elétrica em outra forma de energia.
Formal Axioms
First-Order Logic Theory
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OWL 2 / Turtle
@prefix copi: <https://www.inf.ufrgs.br/ontologies/copi/> .
@prefix : <https://www.inf.ufrgs.br/ontologies/copi/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix bfo: <http://purl.obolibrary.org/obo/> .
@prefix iof-core: <https://spec.industrialontologies.org/ontology/construct/> .
@prefix iof-av: <https://spec.industrialontologies.org/ontology/annotation/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix qudt: <http://qudt.org/schema/qudt/> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix apv: <http://inf.ufrgs.br/ontologies/apv#> .
### COPI — Core Ontology for Petroleum Installations
### Class module: Converter
<https://www.inf.ufrgs.br/ontologies/copi>
rdf:type owl:Ontology ;
dcterms:title "Core Ontology for Petroleum Installations (COPI)"@en ;
dcterms:title "Ontologia Core para Instalações de Petróleo (COPI)"@pt-br ;
dcterms:description "BFO/IOF-Core conformant ontology of equipment classes for petroleum production plants, developed using the five-step RDL enrichment method."@en ;
skos:scopeNote "Material artifacts (bfo:material_entity) that (i) are part of a petroleum production plant, and (ii) bear at least one function whose realization involves the transport (e.g. production and injection), processing (separation and other processes), control, monitoring, measurement, containment or offloading of material or energy."@en ;
skos:scopeNote "Artefatos materiais (bfo:material_entity) que (i) fazem parte de uma planta de produção de petróleo, e (ii) possuem ao menos uma função cuja realização envolve o transporte (p. ex. produção e injeção), processamento (separação e outros processos), controle, monitoramento, medição, contenção ou escoamento de material ou energia."@pt-br ;
skos:scopeNote "COPI provides high-level equipment categories defined by function to demonstrate the defined-class mechanism. Equipment subtypes are annotated with references to CFIHOS and PCA RDL terms. COPI is not a reference data library; organizations should use CFIHOS, PCA RDL, or ISO 14224 for comprehensive equipment classification."@en ;
skos:scopeNote "COPI fornece categorias de alto nível de equipamentos definidas por função para demonstrar o mecanismo de classe definida. Os subtipos de equipamentos são anotados com referências aos termos do CFIHOS e do PCA RDL. COPI não é uma biblioteca de dados de referência; organizações devem utilizar o CFIHOS, o PCA RDL ou a ISO 14224 para classificação abrangente de equipamentos."@pt-br ;
owl:versionInfo "1.1.0" ;
owl:imports <https://spec.industrialontologies.org/ontology/core/Core/> ;
owl:imports <http://purl.obolibrary.org/obo/bfo/2020/bfo.owl> ;
dcterms:creator "Nicolau Oyhenard dos Santos"@en ;
dcterms:contributor "Cauã Antunes" ;
dcterms:contributor "Haroldo Rojas" ;
dcterms:contributor "Rafael Petry" ;
dcterms:contributor "Régis Romeu" ;
dcterms:contributor "Mara Abel" ;
dcterms:isPartOf <https://inf.ufrgs.br/projetos/OntoKG> ;
dcterms:publisher "Universidade Federal do Rio Grande do Sul (UFRGS)"@en ;
dcterms:license <https://creativecommons.org/licenses/by/4.0/> ;
dcterms:created "2026-04-08"^^xsd:date ;
dcterms:modified "2026-10-08"^^xsd:date ;
apv:GlobalMinLanguageCoverage "en pt-br" ;
apv:ClassURIFormationRule "https://www[.]inf[.]ufrgs[.]br/ontologies/copi/(COPI_[0-9]{7}|[A-Z][A-Za-z0-9]*)" ;
apv:ClassMinAnnotationCoverage "rdfs:label https://spec.industrialontologies.org/ontology/annotation/naturalLanguageDefinition" .
iof-av:naturalLanguageDefinition rdf:type owl:AnnotationProperty ;
apv:MinAnnotationLength 20 .
### Identity-giving function
:ConversionFunction rdf:type owl:Class ;
rdfs:subClassOf iof-core:DesignedFunction ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:allValuesFrom :ConversionProcess
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:someValuesFrom :ConversionProcess
] ;
rdfs:label "conversion function"@en ;
rdfs:label "função de conversão"@pt-br .
### Process type
:ConversionProcess rdf:type owl:Class ;
rdfs:subClassOf iof-core:PlannedProcess ;
rdfs:label "conversion process"@en ;
rdfs:label "processo de conversão"@pt-br .
:ConversionProcess
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasInput ;
owl:someValuesFrom iof-core:InformationContentEntity
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasSpecifiedOutput ;
owl:someValuesFrom iof-core:InformationContentEntity
] .
### Equipment universal: Converter
:Converter rdf:type owl:Class ;
owl:equivalentClass [
rdf:type owl:Class ;
owl:intersectionOf (
iof-core:Assembly
[
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart)
owl:someValuesFrom :ConversionFunction
]
)
] ;
rdfs:label "converter"@en ;
rdfs:label "conversor"@pt-br ;
iof-av:naturalLanguageDefinition "A converter is an assembly designed to receive a physical quantity, signal, or energy in one form and output it in a different physical form, such as converting an electrical current signal to a pneumatic pressure signal or converting electrical energy to another energy form."@en ;
skos:definition "A converter is an assembly designed to receive a physical quantity, signal, or energy in one form and output it in a different physical form, such as converting an electrical current signal to a pneumatic pressure signal or converting electrical energy to another energy form."@en ;
iof-av:naturalLanguageDefinition "Um conversor é um conjunto projetado para receber uma grandeza física, sinal ou energia em uma forma e emiti-la em uma forma física diferente, como converter um sinal de corrente elétrica em sinal de pressão pneumática ou converter energia elétrica em outra forma de energia."@pt-br ;
skos:definition "[ISO 15926-4] A <CONVERTER> is a <FunctionalObject> that is capable of <CONVERTING>"@en ;
skos:definition "[ISA 5.1] a device that receives information as one form of an instrument signal and transmits an output signal as another form, such as a current-to-pneumatic signal converter."@en ;
skos:definition "[POSC Caesar] A physical object for converting one thing to another."@en .
Axiomatization Decision Log
1
Identity-Giving Function
Function class
ConversionFunction
⊑ DesignedFunction
Realized in
ConversionProcess
⊑ PlannedProcess
2
Genus Determination
Assembly
bfo:Object (BFO_0000030)
Causally unified material artefact composed of physically connected,
separable MaterialComponent parts. Satisfies
Assembly ⊑ MaterialArtifact ⊑ bfo:Object.
3
Necessary Parts
| Part class | Parent | Relation |
|---|---|---|
| InputInterface | MaterialArtifact | hasComponentPartAtAllTimes |
| OutputInterface | MaterialArtifact | hasComponentPartAtAllTimes |
4
Process Participation Signature ⟨I, O, T⟩
Inputs (I)
InformationContentEntity
— physical quantity, signal, or energy in one form — e.g. electrical current, pneumatic pressure, chemical energy
Outputs (O)
InformationContentEntity
— same quantity or information in a different physical form — e.g. pneumatic signal, mechanical motion, electrical voltage
Transformation (T)
form conversion of a signal or energy quantity preserving the represented information or energy magnitude
The converter changes the physical carrier or form of a signal or energy quantity without altering its informational content or energy magnitude, distinguishing it from amplifiers (which change magnitude) and transducers (which change physical domain with measurement).
5
Axiom Mode Decision
Necessary + Sufficient
— modelled as a defined class
(≡, EquivalentClass). Automatic classification is
appropriate for this concept.
