中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
机构
采集方式
内容类型
发表日期
学科主题
筛选

浏览/检索结果: 共5条,第1-5条 帮助

条数/页: 排序方式:
微控器在试验中实现的前端设备远程复位控制 期刊论文  OAI收割
微计算机信息, 2007, 卷号: 2007, 期号: 02, 页码: 131-133
赵江; 张玮; 乔卫民; 敬兰; 董金梅; 王丹; 张硕成
  |  收藏  |  浏览/下载:10/0  |  提交时间:2010/10/29
无线收发模块在多机通信中的设计与实现 期刊论文  OAI收割
吉林大学学报(理学版), 2006, 卷号: 44, 期号: 3, 页码: 469-472
王胜源; 张洪武; 赵凯; 张宏飞
收藏  |  浏览/下载:14/0  |  提交时间:2010/11/21
The application of auto-controlled liquid crystal light valve arrays to photolithography shutter (EI CONFERENCE) 会议论文  OAI收割
ICO20: Optical Devices and Instruments, August 21, 2005 - August 26, 2005, Changchun, China
作者:  
Chen Y.
收藏  |  浏览/下载:15/0  |  提交时间:2013/03/25
Photolithography shutter is usually used to control exposure in order to obtain patterns of code disc and metrology grating which are the core components of optical shaft encoder. But perforated film as photolithography shutter has many disadvantages such as taking too long time to perforate  easily making wrong code  lower reusable ratio. Mathematical models for resist property  luminous efficiency and exposure have been established by deducing their relations for avoiding the disadvantages  which provides the theory of using liquid crystal light valve (LCLV) replacing proforated film. Based on operating principles of LCLV and control theories of photolithography shutter  the principle diagram of control circuit of LCLV arrays has been designed according to theirs control principles. In the control system  LCLV arrays as photolithography shutter are realized by adopting DS75451 to drive them and using AT89C51 chip to control them. By photolithographic experiment  the patterns of code disc are good  the edges of lines are vertical  it indicates LCLV arrays as photolithography shutter may control exposure and light passing accords with the intending requires. It proves using LCLV arrays replacing perforated film as photolithography shutter is feasible completely.  
基于AT89C51的自动测量和控制系统设计 期刊论文  OAI收割
仪表技术与传感器, 2004, 卷号: 2004, 期号: 12, 页码: 35-37
敬岚,朱海君,张硕成,王丹
  |  收藏  |  浏览/下载:14/0  |  提交时间:2010/10/29
基于单片机的多功能电路测试平台 期刊论文  OAI收割
电子工程师, 2004, 期号: 01, 页码: 17-19
吴平; 刘建; 郑喜凤; 丁铁夫
收藏  |  浏览/下载:8/0  |  提交时间:2013/03/11