Tiêu chuẩn quốc tế
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Số hiệu
Standard Number
ISO DIS 22741-1:2020
Năm ban hành 2020
Publication date
Tình trạng
A - Còn hiệu lực
Status |
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Tên tiếng Anh
Title in English Intelligent transport systems — Roadside modules AP-DATEX data interface — Part 1: Overview
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Chỉ số phân loại Quốc tế (ICS)
By field |
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Số trang
Page 14
Giá:
Price Liên hệ / Contact us
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Phạm vi áp dụng
Scope of standard General Field devices are a key component in intelligent transport systems (ITS). Field devices include traffic signals, message signs, weather stations, traffic sensors, roadside equipment for connected ITS (C-ITS) environments, etc. Field devices often need to exchange information with other external entities. Field devices can be quite complex necessitating the standardisation of many data concepts for exchange. As such, this document is divided into several individual Parts. Part 1 (this Part) introduces this document and provides normative content that applies to all subsequent Parts. Applicable environment As depicted in Figure 1, all Parts of this document are intended to address data exchanges between: 1) A management centre (traffic or otherwise) and a field device (roadside module) or 2) Two field devices Subsequent Parts of this document define needs, requirements, and design details for various field device capabilities. The architecture of this document All Parts of ISO 22741 are positioned in the application layer of the standard OSI7 layer. Figure 2 depicts how various Parts of this document relate to other standards in the case of the ITS Station architecture, as defined in ISO 21217. Parts 2-9 of this document are reserved for features that are such as a part of the Management Plane of an ITS Station. These Parts do not define end-device functionality; rather they define management services that may support end-device functionality. The management layer will typically also support other data to manage the communications stack as defined by the data registry of AP-DATEX. Other Parts of this document will address the end-device functionality. The information defined for the management and applications can theoretically be exchanged over any communications stack, but is designed to be exchanged using DATEX-ASN, as described in ISO 15784-3. DATEX-ASN is typically exchanged using well-known Internet protocols, such as UDP/IP or TCP/IP, then may use IPsec, DTLS , TLS, and so on for security. |