| 一种能产生精确定时脉冲信号的PCI卡的设计 |
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| 引用本文： | 童吕轶,房庆海,王金锋,廖鲁昕. 一种能产生精确定时脉冲信号的PCI卡的设计[J]. 工业计量, 2008, 18(2): 14-16 |
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| 作者姓名： | 童吕轶 房庆海 王金锋 廖鲁昕 |
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| 作者单位： | 冶金自动化研究设计院研发中心,北京,100071;冶金科技发展中心,北京,100073 |
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| 摘 要： | 介绍了一种能够产生精确定时脉冲信号的PCI卡的设计。该卡产生的脉冲信号相对基准信号的定时精度可以达到500ps。该卡为PCI总线卡形式，采用了FPGA＋模拟延时芯片方式实现控制逻辑和定时。在FPGA内部设计的计时比较器为粗定时，模拟延时芯片为精密定时，最终在规定的精确时刻产生脉冲信号。
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| 关 键 词： | PCI FPGA 精密定时 |
| 文章编号： | 1002-1183（2008）02-0014-03 |
| 收稿时间： | 2007-08-13 |
| 修稿时间： | 2007-08-13 |
Design of PCI Card Generating Precise Timing Pulse Signals |
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| TONG Lv-yi,FANG Qing-hai,WANG Jin-feng,LIAO Lu-xin. Design of PCI Card Generating Precise Timing Pulse Signals[J]. Industrial Measurement, 2008, 18(2): 14-16 |
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| Authors: | TONG Lv-yi FANG Qing-hai WANG Jin-feng LIAO Lu-xin |
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| Affiliation: | TONG Lv-yi , FANG Qing-hai , WANG Jin-feng , LIAO Lu-xin(1. Research and Development Center, Automation Research and Design Institute of Metallurgical Industry, Beijing 100071, China; 2. Metallurgical Science and Technology Development Center, Beijing 100073, China) |
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| Abstract: | Design of PCI card which can generate precise timing pulse signals is introduced. Timing accuracy of the card＇s output pulse signal can reach to 500 ps. The card is based on PCI bus. FPGA and analog delay chip was adopted to implement control logie and timing. The timer and comparator built in FPGA were designed to achieve low resolntion of timing, and high resolution of timing is accomplished with analog delay chip. Pulse signals could be generated at expected exact time. |
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| Keywords: | PCI FPGA precise timing |
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