Normy

Obsah

ČSN EN 61158-4-13 ed. 2 This part of IEC 61158 specifies procedures for the timely transfer of data and control information from one data-link user entity to a peer user entity, and among the data-link entities forming the distributed data-link service provider and the structure of the fieldbus DLPDUs used for the transfer of data and control information by the protocol of this standard, and their representation as physical interface data units.

Obsah

ČSN EN 61158-5-14 ed. 3 The fieldbus application layer (FAL) provides user programs with a means to access the fieldbus communi-cation environment. In this respect, the FAL can be viewed as a "window between corresponding application programs." This standard provides common elements for basic time-critical and non-time-critical messaging communications between application programs in an automation environment and material specific to fieldbus. The term "time-critical" is used to represent the presence of a time-window, within which one or more specified actions are required to be completed with some defined level of certainty. Failure to complete specified actions within the time window risks failure of the applications requesting the actions, with attendant risk to equipment, plant and possibly human life. This standard defines in an abstract way the externally visible service provided by the fieldbus application layer in terms of an abstract model for defining application resources (objects) capable of being manipulated by users via the use of the FAL service, the primitive actions and events of the service, the parameters associated with each primitive action and event, and the form which they take and the interrelationship between these actions and events, and their valid sequences. The purpose of this standard is to define the services provided to the FAL user at the boundary between the user and the application layer of the fieldbus reference model, and Systems Management at the boundary between the application layer and Systems Management of the fieldbus reference model.

Obsah

ČSN EN 61158-6-9 ed. 3 The Fieldbus Application Layer (FAL) provides user programs with a means to access the fieldbus communi-cation environment. In this respect, the FAL can be viewed as a "window between corresponding application programs." his standard provides common elements for basic time-critical and non-time-critical messaging communications between application programs in an automation environment and material specific to fieldbus. The term "time-critical" is used to represent the presence of a time-window, within which one or more specified actions are required to be completed with some defined level of certainty. Failure to complete specified actions within the time window risks failure of the applications requesting the actions, with attendant risk to equipment, plant and possibly human life. This standard specifies interactions between remote applications and defines the externally visible behavior provided by the fieldbus application layer in terms of the formal abstract syntax defining the application layer protocol data units conveyed between communicating application entities; the transfer syntax defining encoding rules that are applied to the application layer protocol data units; the application context state machine defining the application service behavior visible between communicating application entities; the application relationship state machines defining the communication behavior visible between communicating application entities. The purpose of this standard is to define the protocol provided to define the wire-representation of the service primitives defined in IEC 61158-5, and define the externally visible behavior associated with their transfer.

Obsah

ČSN EN 61158-6-14 ed. 3 The Fieldbus Application Layer (FAL) provides user programs with a means to access the fieldbus communi-cation environment. In this respect, the FAL can be viewed as a "window between corresponding application programs." his standard provides common elements for basic time-critical and non-time-critical messaging communications between application programs in an automation environment and material specific to fieldbus. The term "time-critical" is used to represent the presence of a time-window, within which one or more specified actions are required to be completed with some defined level of certainty. Failure to complete specified actions within the time window risks failure of the applications requesting the actions, with attendant risk to equipment, plant and possibly human life. This standard specifies interactions between remote applications and defines the externally visible behavior provided by the fieldbus application layer in terms of the formal abstract syntax defining the application layer protocol data units conveyed between communicating application entities; the transfer syntax defining encoding rules that are applied to the application layer protocol data units; the application context state machine defining the application service behavior visible between communicating application entities; the application relationship state machines defining the communication behavior visible between communicating application entities. The purpose of this standard is to define the protocol provided to define the wire-representation of the service primitives defined in IEC 61158-5, and define the externally visible behavior associated with their transfer.

Obsah

ČSN EN 61158-6-22 ed. 2 The Fieldbus Application Layer (FAL) provides user programs with a means to access the fieldbus communi-cation environment. In this respect, the FAL can be viewed as a "window between corresponding application programs." his standard provides common elements for basic time-critical and non-time-critical messaging communications between application programs in an automation environment and material specific to fieldbus. The term "time-critical" is used to represent the presence of a time-window, within which one or more specified actions are required to be completed with some defined level of certainty. Failure to complete specified actions within the time window risks failure of the applications requesting the actions, with attendant risk to equipment, plant and possibly human life. This standard specifies interactions between remote applications and defines the externally visible behavior provided by the fieldbus application layer in terms of the formal abstract syntax defining the application layer protocol data units conveyed between communicating application entities; the transfer syntax defining encoding rules that are applied to the application layer protocol data units; the application context state machine defining the application service behavior visible between communicating application entities; the application relationship state machines defining the communication behavior visible between communicating application entities. The purpose of this standard is to define the protocol provided to define the wire-representation of the service primitives defined in IEC 61158-5, and define the externally visible behavior associated with their transfer.

Obsah

ČSN ISO 21771 Tato mezinárodní norma specifikuje geometrické pojmy a parametry pro čelní evolventní ozubená kola s přímými a šikmými boky zubů. Obsahuje také i modifikaci boků zubů. Týká se to také pojmů a parametrů pro soukolí s čelními ozubenými koly s rovnoběžnými osami a konstantním převodovým poměrem, které se skládají z čelních ozubených kol. Ozubené kolo a spoluzabírající ozubené kolo má stejný základní profil ozubeného hřebenu. Rovnice uvedené nejsou omezeny na úhel záběru, P = 20°. Tato mezinárodní norma je strukturován následovně. - Seznam značek a názvosloví pro unikátní popis ozubených kol a dvojice ozubených kol (viz kapitola 3). - Rovnice a vysvětlení relevantní hodnoty pro určení čelních ozubených kol a jeho ozubení. Rovnice pro stanovení jmenovitých hodnot pro popis parametrů nulové úchylky ozubeného kola, které jsou stanoveny pro obvodové rozměry zubů (výška zubu kola), vzdálenost mezi stejnolehlými boky zubů, vzdálenost mezi protilehlými boky zubů, stejně jako charakteristické parametry boku zubu (viz kapitola 4). - Rovnice a vysvětlení relevantních hodnot pro určení dvojice ozubených kol. Jsou to rovnice pro základní parametry charakterizující záběrové podmínky pro nezatíženou dvojici ozubených kol (viz kapitola 5). - Rovnice a návrhy pro požadované modifikace boku zubu (viz kapitola 6). - Koncepty a doporučení potřebné pro unikátní geometrické definice zamýšlených výsledků z výroby (kapitola 7). - Rovnice pro stanovení jmenovitých hodnot nebo mezních hodnot pro většinu používaných kontrolních metod pro tloušťky zubu (viz příloha A).

Obsah

ČSN EN 16603-50-13 Using standard communication protocols for spacecraft communication links can provide interface compatibility between communication devices and components. Thus, it can improve the design and development process as well as integration and test activities at all levels, and provide the potential of reusability across projects. The aim of this space engineering standard is to define the interface services and to specify their corresponding bus protocol elements for spacecraft using the MIL-STD-1553B data bus. It also aims at defining requirements for harmonisation of physical interface and usage of the MIL-STD-1553B data link layer features. Another goal of this standard is to facilitate the bus profiling task by proposing a message scheduling scheme to the mission system architects. Such framework helps to homogenise the allocation and control of communication resources across a single project or spacecraft mission. The scope of this standard is as follows: o It details the usage of the MIL-STD-1553B. o It covers the communication protocols, services and functions needed for exchange of information over MIL-STD-1553B data bus. o It is limited to necessary and sufficient requirements to ensure compatibility for communication through MIL-STD-1553B data bus for communication devices onboard a spacecraft and across projects. o It covers a wide spectrum of mission needs. o It does not modify requirements that are under the scope of MIL-STD-1553B. o It covers recommendation for verification and test of communication devices communicating through a MIL-STD-1553 data bus. This Standard provides a comprehensive set of requirements for all communication devices and components onboard a spacecraft, which are connected to a single (redundant) data bus according to MIL-STD-1553B. Although the standard focuses on the specification of single-bus architecture, questions related to multiple-bus-architectures or the use of repeaters for separable busses (for launchers) are also addressed. This Standard aims at specifying requirements that are technically feasible, correct, consistent and compliant with the needs and overall technological approach and industrial policies of the participating Agencies and Industry. This standard may be tailored for the specific characteristic and constrains of a space project in conformance with ECSS-S-ST-00.

Obsah

ČSN EN 16603-50-52 There is a number of communication protocols that can be used in conjunction with the SpaceWire Standard (ECSS-E-ST-50-12), to provide a comprehensive set of services for onboard user applications. To distinguish between the various protocols a protocol identifier is used, as specified in ECSS-E-ST-50-51. This Standard specifies the Remote Memory Access protocol (RMAP), which is one of these protocols that works over SpaceWire. The aim of RMAP is to support reading from and writing to memory in a remote SpaceWire node. RMAP can be used to configure a SpaceWire network, control SpaceWire nodes, and to transfer data to and from SpaceWire nodes. RMAP is specified in this Standard. This standard may be tailored for the specific characteristic and constrains of a space project in conformance with ECSS-S-ST-00.

Obsah

ČSN EN 16603-35 This Standard defines the regulatory aspects that apply to the elements and processes of liquid propulsion for launch vehicles and spacecraft, solid propulsion for launch vehicles and spacecraft and electric propulsion for spacecraft. The common requirements for the three types of space propulsion are written in the ECSS-E-ST-35 document. The specific requirements for each type of propulsion are given in ECSS-E-ST-35-01, ECSS-E-ST-35-02 and ECSS-E-ST-35-03. It specifies the activities to be performed in the engineering of these propulsion systems and their applicability. It defines the requirement for the engineering aspects such as functional, physical, environmental, quality factors, operational and verification. Other forms of propulsion (e.g. nuclear, nuclear-electric, solar-thermal and hybrid propulsion) are not presently covered in this issue of the Standard. This standard applies to all types of space propulsion systems used in space applications, including: o Liquid and electric propulsion for spacecraft. o Solid propulsion for launch vehicles and spacecraft; o Liquid propulsion for launch vehicles. This standard may be tailored for the specific characteristic and constrains of a space project in conformance with ECSS-S-ST-00.

Obsah

ČSN EN ISO 10439-2 This part of ISO 10439 specifies minimum requirements and gives recommendations for axial compressors, single-shaft, and integrally geared process centrifugal compressors and expander-compressors for special purpose applications that handle gas or process air in the petroleum, petrochemical, and natural gas industries. This part of ISO 10439 specifies requirements for non-integrally geared centrifugal and axial compressors, in addition to the general requirements specified in ISO 10439-1. These machines do not have gears integral with their casing but can have external gears. NOTE: See ISO 10439-3 for integrally geared process compressors, or API 672 for packaged plant instrument air compressors.

Obsah

ČSN ETSI EN 300 328 V1.9.1 The present document applies to Wide Band Data Transmission equipment. The present document also describes spectrum access requirements to facilitate spectrum sharing with other equipment. Wide Band Data Transmission equipment covered by the present document is operated in accordance with the ERC Recommendation 70-03 [i.6], annex 3 or Commission Decision 2006/771/EC [i.7] (and its amendments). Examples of Wide Band Data Transmission equipment are equipments such as IEEE 802.11™ RLANs [i.3], Bluetooth® wireless technologies, Zigbee™, etc. This equipment can be used in fixed, mobile or nomadic applications, e.g.: - stand-alone radio equipment with or without their own control provisions; - plug-in radio devices intended for use with or within a variety of host systems, e.g. personal computers, hand held terminals, etc.; - plug-in radio devices intended for use within combined equipment, e.g. cable modems, set-top boxes, access points, etc.; - combined equipment or a combination of a plug-in radio device and a specific type of host equipment. This radio equipment is capable of operating in the band 2,4 GHz to 2,4835 GHz. Applications using Ultra Wide Band (UWB) technology are not covered by the present document. The present document is intended to cover the provisions of Directive 1999/5/EC (R&TTE Directive) [i.1], article 3.2, which states that ". radio equipment shall be so constructed that it effectively uses the spectrum allocated to terrestrial/space radio communications and orbital resources so as to avoid harmful interference".

Obsah

ČSN EN 61082-1 ed. 3 Tato část IEC 61082 poskytuje všeobecná pravidla a směrnice pro prezentaci/uvádění informací v dokumentech a specifická pravidla pro schémata, výkresy a tabulky, používané v elektrotechnice. Z této normy jsou vyloučena pravidla a směrnice pro veškeré druhy prezentace informací audio nebo video nebo taktilní technikou. Tato horizontální norma je určena primárně pro použití technickými komisemi při přípravě norem v souladu se zásadami stanovenými v Pokynu IEC 108.