exported
equivalent
hopper
IRI:
http://www.inf.ufrgs.br/ontologies/copi#Hopper
Generated on 2026-04-15
Natural Language Definition
EN
A hopper is a vessel that is designed to store solid materials and dispense them through a controlled discharge opening.
PT-BR
Um hopper é um vaso projetado para armazenar materiais sólidos e dispensá-los através de uma abertura de descarga controlada.
Formal Axioms
Semi-formal (Aristotelian)
Every hopper is a vessel that bears a SolidStorageAndDispensingFunction and has a SolidDischargeOpening as component part.
First-Order Logic Theory
Loading…
▸ Stored override
∀x(Hopper(x) ↔ (Vessel(x) ∧ ∃f(SolidStorageAndDispensingFunction(f) ∧ bearerOf(x,f)) ∧ ∃p(SolidDischargeOpening(p) ∧ hasComponentPartAtAllTimes(x,p))))
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: Hopper
<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
:COPI_0000644 rdf:type owl:Class ; # SolidStorageAndDispensingFunction
rdfs:subClassOf iof-core:DesignedFunction ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:allValuesFrom :COPI_0000645 # SolidStorageAndDispensingProcess
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:someValuesFrom :COPI_0000645 # SolidStorageAndDispensingProcess
] ;
rdfs:label "solid storage and dispensing function"@en ;
rdfs:label "função de armazenamento e distribuição de sólidos"@pt-br .
### Process type
:COPI_0000645 rdf:type owl:Class ; # SolidStorageAndDispensingProcess
rdfs:subClassOf :COPI_0000009 ; # MaterialContainment
rdfs:label "solid storage and dispensing process"@en ;
rdfs:label "processo de armazenamento e distribuição de sólidos"@pt-br .
:COPI_0000009 rdf:type owl:Class . # MaterialContainment
:COPI_0000645 # SolidStorageAndDispensingProcess
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasInput ;
owl:someValuesFrom :COPI_0000040 # PortionOfSolid
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasSpecifiedOutput ;
owl:someValuesFrom :COPI_0000040 # PortionOfSolid
] .
### Equipment universal: Hopper
:COPI_0000295 rdf:type owl:Class ; # Hopper
owl:equivalentClass [
rdf:type owl:Class ;
owl:intersectionOf (
:COPI_0000158 # Vessel
[
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart)
owl:someValuesFrom :COPI_0000644 # SolidStorageAndDispensingFunction
]
)
] ;
rdfs:label "hopper"@en ;
rdfs:label "hopper"@pt-br ;
iof-av:naturalLanguageDefinition "A hopper is a vessel that is designed to store solid materials and dispense them through a controlled discharge opening."@en ;
skos:definition "A hopper is a vessel that is designed to store solid materials and dispense them through a controlled discharge opening."@en ;
iof-av:naturalLanguageDefinition "Um hopper é um vaso projetado para armazenar materiais sólidos e dispensá-los através de uma abertura de descarga controlada."@pt-br ;
iof-av:semiFormalNaturalLanguageAxiom "Every hopper is a vessel that bears a SolidStorageAndDispensingFunction and has a SolidDischargeOpening as component part."@en ;
iof-av:firstOrderLogicAxiom "∀x(Hopper(x) ↔ (Vessel(x) ∧ ∃f(SolidStorageAndDispensingFunction(f) ∧ bearerOf(x,f)) ∧ ∃p(SolidDischargeOpening(p) ∧ hasComponentPartAtAllTimes(x,p))))"@en ;
skos:definition "[ISO 15926-4] A <HOPPER> is a <CONTAINER> with a conical shape that is intended to store solids for filling or dosing purposes"@en ;
skos:definition "[CFIHOS] A vessel with a conical shape for filling or dosing purposes."@en ;
skos:definition "[SLB Glossary] The device used to facilitate the addition of drilling fluid additives to the whole mud system."@en ;
skos:definition "[OnePetro] Mixing chamber where dry components can be evenly mixed with liquids. The dry materials are introduced at the bottom of the hopper through a nozzle."@en ;
skos:definition "[POSC Caesar] A vessel with a conical shape for filling or dosing purposes"@en .
Axiomatization Decision Log
1
Identity-Giving Function
Function class
SolidStorageAndDispensingFunction
⊑ DesignedFunction
Realized in
SolidStorageAndDispensingProcess
⊑ MaterialContainment
The identity-giving function combines storage of solid materials with controlled dispensing/dosing capability. This distinguishes hoppers from simple containers (which only store) and from feeders (which only dispense). The combination of temporary storage with controlled discharge is what makes a hopper a hopper.
2
Genus Determination
Vessel
The parent candidates include CONTAINER (iso15926), vessel (cfihos), and Artefact (posc_caesar). 'vessel' is the most specific appropriate superclass that is already enriched in our ontology. It represents the containment aspect while being more specific than the generic 'container' or 'artefact'. Vessels are typically assemblies with containment function, which aligns with hopper design.
3
Necessary Parts
No necessary parts recorded (concept may be primitive at this level).
These parts are essential to the hopper's dual function of storage and controlled dispensing. The discharge opening enables the dispensing function while the storage compartment enables the storage function.
4
Process Participation Signature ⟨I, O, T⟩
Inputs (I)
PortionOfSolid
— particulate or granular solids
Outputs (O)
PortionOfSolid
— same material, controlled flow rate
Transformation (T)
controlled discharge of stored solid material
Hoppers receive solid materials for storage and dispense the same materials in a controlled manner. No chemical transformation occurs, only controlled material handling and flow regulation.
5
Axiom Mode Decision
Necessary + Sufficient
— modelled as a defined class
(≡, EquivalentClass). Automatic classification is
appropriate for this concept.
Cross-Standard Observations
Sources show good consistency on the storage and dispensing function. ISO 15926 and CFIHOS/POSC emphasize the conical shape more than SLB and OnePetro which focus on specific applications (drilling fluid additives, mixing). The functional definition accommodates both general-purpose hoppers and specialized variants like mud hoppers.
