GB/T 40778.2-2021Internet of things—Web-oriented open service system implementation—Part 2: Things description method (English PDF)
物联网 面向Web开放服务的系统实现 第2部分:物体描述方法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
October 11, 2021
Implementation date
May 1, 2022
Scope
GB/T 40778.2-2021 is the English-translated version of 物联网 面向Web开放服务的系统实现 第2部分:物体描述方法.
GB/T 40778.2-2021 is Part 2 of the Chinese series on implementing Internet of Things systems for Web open services, and sets out how things are described.
It specifies a thing description model and the thing description metadata, so that heterogeneous IoT objects are described in one unified format and systems interact and interoperate at lower development cost.
It defines thing description, metadata, metadata element and metadata entity, and models in UML, whose symbols are explained in informative Annex A; informative Annex B gives worked examples of the description method in XML and in JSON.
It builds on Part 1, the reference architecture, and on GB/T 2260, GB/T 2659 and GB/T 7408 for divisions, countries and dates. It applies to the design and development of such IoT systems, was issued on 11 October 2021 and has applied since 1 May 2022.
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Document preview — GB/T 40778.2-2021
National Standard of the People's Republic of China
- ICS
- 35.110
- Classification
- L 79
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Abbreviations
- 5 Object description model
- 6 Object description metadata
- Appendix A (informative) UML symbol description
- Appendix B (informative) Examples of object description methods
- B.1 Examples of XML description methods
- B.2 JSON description method example
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.
This document is the second part of GB/T 40778 "Implementation of the Internet of Things System for Open Services on the Web". GB/T 40778 has The following sections were released.
---Part 1: Reference Architecture;
---Part 2: Object description method.
Introduction
In order to solve the problems of information fragmentation and chimney development in the development of the Internet of Things, it is necessary to establish Set relevant national standards to provide norms and guidance for improving the collaboration function between IoT application systems and accelerating the integration of the entire industrial chain of the Internet of Things.
This document gives a set of system IoT object description methods oriented to Web development services, unifies the description of heterogeneous IoT objects, and reduces Low development cost of heterogeneous Internet of Things system, improve the interaction and interoperability of objects between systems.
The plan of GB/T 40778 "Internet of Things System Implementation for Web Open Services" consists of two parts.
---Part 1: Reference architecture. The purpose is to provide a set of Internet of Things system architecture oriented to Web open services.
---Part 2: Object description method. The purpose is to unify the description of objects between heterogeneous Internet of Things systems oriented to Web open services.
1 Scope
This document specifies the object description model and object description metadata requirements of the Internet of Things system for Web open services.
This document is applicable to the design and development of the Internet of Things system oriented to open Web services, and provides technical support for Internet of Things application services.
2 Normative references
The content of the following documents constitutes an indispensable clause of this document through normative references in the text. Among them, dated quotations Only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.
GB/T 2260 Administrative division code of the People's Republic of China
GB/T 2659 Code for names of countries and regions in the world
GB/T 7408 Data element and exchange format information exchange date and time representation
GB/T 28174 (all parts) Unified Modeling Language (UML)
GB/T 40778.1-2021 The system implementation of the Internet of Things for Web open services-Part 1: Reference architecture
3 Terms and definitions
The following terms and definitions apply to this document.
3.1 Things description
The virtual objects generated by devices and data connected to the Internet of Things are represented in a unified and standardized format.
3.2 Metadata
Data describing the object data of the Internet of Things.
3.3 Metadata element
The basic unit of metadata. [Source: GB/T 19710-2005, 4.6]
3.4 Metadata entity
A set of metadata elements that describe the same characteristics of the data. [Source: GB/T 19710-2005, 4.7]
4 Abbreviations
The following abbreviations apply to this document.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 22 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 2260Codes for the administrative divisions of the People's Republic of China
- GB/T 2659Codes for the representation of names of countries and their subdivisions - Part 1: Country code
- GB/T 7408Date and time - Representations for information interchange - Part 1: Basic rules
- GB/T 40778.1-2021Internet of things—Web-oriented open service system implementation—Part 1: Reference architecture
GB/T 28174
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