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ISO/IEC 14443-2-2020 个人识别用卡和安全装置--非接触接近物体--第2部分:射频功率和信号接口 Cards and security devices for personal identification — Contactless proximity objects — Part 2: Radio frequency power and signal interface
This document specifies the characteristics of the fields to be provided for power and bi-directional communication between proximity coupling devices (PCDs) and proximity cards or objects (PICCs).<br />This document does not specify the means of generating coupling fields, nor the means of compliance with electromagnetic radiation and human exposure regulations, which can vary depending on the country....
2024-02-03 02:45:01浏览:10
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ISO/IEC 14443-3-2018 个人识别用卡片和安全装置--非接触接近物--第3部分:初始化和防腐蚀 Cards and security devices for personal identification — Contactless proximity objects — Part 3: Initialization and anticollision
This document describes the following:<br />— polling for proximity cards or objects (PICCs) entering the field of a proximity coupling device (PCD);<br />— the byte format, the frames and timing used during the initial phase of communication between PCDs and PICCs;<br />— the initial Request and Answer to Request command content;<br />— methods to detect and communicate with one PICC among several PICCs (anticollision);<br />— other parameters required to initialize communications between a PICC and PCD;<br />— optional means to ease and speed up the selection of one PICC among several PICCs based on application criteria;<br />— optional capability to allow a device to alternate between the functions of a PICC and a PCD to communicate with a PCD or a PICC, respectively. A device which implements this capability is called a PXD.<br />Protocol and commands used by higher layers and by applications and which are used after the initial phase are described in ISO/IEC 14443-4.<br />This document is applicable to PICCs of Type A and of Type B (as described in ISO/IEC 14443-2), to PCDs (as described in ISO/IEC 14443-2) and to PXDs.<br />NOTE 1 Part of the timing of data communication is defined in ISO/IEC 14443-2.<br />NOTE 2 Test methods for this document are defined in ISO/IEC 10373-6....
2023-12-17 08:12:01浏览:10
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JT/T 1333-2020 码头油气回收船岸安全装置 Vapour recovery ship-to-dock safety unit
本标准规定了码头油气回收船岸安全装置的构成、规格及型号编制方法、技术要求、试验方法、检验规则,以及标志、包装、运输和储存等要求。<br />本标准适用于码头油气回收设施的船岸安全装置的制造、检验和使用。...
2023-10-14 12:12:01浏览:15
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IEC 60050-821-2017 国际电工词汇--第821部分:铁路用信号和安全装置 International electrotechnical vocabulary – Part 821: Signalling and security apparatus for railways
This part of IEC 60050 gives the general terminology relating to signalling and security apparatus for railways, as well as general terms pertaining to specific applications and associated technologies. This new edition reviews and complements the previous one. It has the status of a horizontal standard in accordance with IEC Guide 108, Guidelines for ensuring the coherency of IEC publications – Application of horizontal standards.<br />This terminology is consistent with the terminology developed in the other specialized parts of the IEV.<br />This horizontal standard is primarily intended for use by technical committees in the preparation of standards in accordance with the principles laid down in IEC Guide 108.<br />One of the responsibilities of a technical committee is, wherever applicable, to make use of horizontal standards in the preparation of its publications....
2023-09-13 20:24:01浏览:18
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BS EN ISO 4126-1-2013+A1-2016 用于防止过压的安全装置 安全阀 Safety devices for protection against excessive pressure. Safety valves
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2023-08-24 18:00:01浏览:14
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GB/T 38599-2020 安全阀与爆破片安全装置的组合 Safety valves and bursting disc safety devices in combination
本标准规定了安全阀与爆破片安全装置的组合(以下简称组合装置)的应用与设计、安装、排量修正系数的测定、排量修正系数的应用、标识、质量证明书、包装和运输。<br />本标准适用于爆破片安全装置出口侧到安全阀人口侧的距离不大于5倍管径的串联组合结构。...
2023-05-16 06:00:01浏览:61
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AS/NZS 3845.2-2017道路安全屏障系统和设备 - 道路安全装置Road safety barrier systems and devices - Road safety devices
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2023-04-22 10:50:01浏览:28
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【视频】加装转运设备安全装置:救员工一命的真实案例,可自助下载zip
【视频】加装转运设备安全装置:救员工一命的真实案例,可自助下载zip...
2023-03-08 13:45:08浏览:11
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