SJ 20901-2004 硬磁盘信息消除器通用规范
作者:标准资料网 时间:2024-05-08 06:45:43 浏览:9086
来源:标准资料网
基本信息
| 标准名称： | 硬磁盘信息消除器通用规范 |
| 英文名称： | General specification for hard disk information eraser |
| 中标分类： |
电子元器件与信息技术 >>
计算机 >>
计算机外围设备 |
| ICS分类： |
信息技术、办公机械设备 >>
数据存储设备
|
| 发布日期： | 2004-08-02 |
| 实施日期： | 2004-12-01 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： | |
| 页数： | 16页 |
适用范围
本规范规定了硬磁盘信息消除器的通用要求、质量保证规定、交货准备等。本规范适用于有源、无源硬磁盘信息消除器的研制、生产和验收。
前言
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目录
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引用标准
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所属分类： 电子元器件与信息技术 计算机 计算机外围设备 信息技术 办公机械设备 数据存储设备
Product Code:SAE J1750
Title:Describing and Evaluating the Truck DriverS Viewing Environment
Issuing Committee:Truck And Bus Human Factors Committee
Scope:This SAE Recommended Practice establishes two uniform methods for describing and evaluating the truck driver's viewing environment, the Polar Plot and the Horizontal Planar Projection. The Polar Plot presents the entire available field of view in an angular format, onto which items of interest may be plotted, whereas the Horizontal Planar Projection presents the field of view at a given elevation chosen for evaluation. These methods are based on the three dimensional reference system described in SAE J182a. This document relates to the driver's exterior visibility environment and was developed for the heavy truck industry (Class B vehicles, class 6, 7, 8 vehicles) although the projection principles presented in this document can be applied to any class of motor vehicles. This document is intended to complement SAE J1050a and provides a visual format that can describe the driver's entire viewing environment. This environment can then be analyzed to determine what the driver is capable of seeing. It should be noted that one of the most important factors affecting the driver's field of view and the ability to make valid vehicle/design comparisons is the location of the driver's eyepoint. SAE J941 defines the eyellipse which forms the basis for eyepoints chosen as the origin for polar plots and horizontal planar projections. Both the Horizontal Planar Projection and Polar Plot create monocular evaluations. Projections/plots of multiple eyepoints must be overlaid to create binocular of ambinocular evaluations.Anaytical methods for creating Polar Plots and Horizontal Planar Projections for direct and indirect vision (planar and spherical convex mirrors) are presented. Note that it is possible to create plots and projections for other mirror surfaces and vision devices if the equations for determining reflection points are provided. It is also possible to create polar plots and horizontal planar projections using experimental and graphical methods. These are beyond the present scope of this document.
基本信息
| 标准名称： | 机动小艇 操舵部位的视野 |
| 英文名称： | Small craft engine-driven--Field of vision from helm position |
| 中标分类： |
船舶 >>
船舶专用装备 >>
小型船装备 |
| ICS分类： |
造船和海上建筑物 >>
小型船
|
| 发布部门： | 中华人民共和国国家质量监督检验检疫总局 |
| 发布日期： | 2002-08-28 |
| 实施日期： | 2003-01-01 |
| 首发日期： | 2002-08-28 |
| 作废日期： | 1900-01-01 |
| 主管部门： | 中国船舶工业集团公司 |
| 提出单位： | 中国船舶工业集团公司 |
| 归口单位： | 中国船舶工业第七0八研究所 |
| 起草单位： | 中国船舶工业综合技术经济研究院 |
| 起草人： | 罗春燕、林德辉 |
| 出版社： | 中国标准出版社 |
| 出版日期： | 2003-01-01 |
| 页数： | 平装16开，页数：8， 字数：14千字 |
| 书号： | 155066.1-18983 |
适用范围
本标准对艇体长度不大于24m的机动小艇规定了在操舵部位向前、向后的视野要求。
前言
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目录
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引用标准
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所属分类： 船舶 船舶专用装备 小型船装备 造船和海上建筑物 小型船
