nearby
共 9 篇文章
nearby 相关的电子技术资料，包括技术文档、应用笔记、电路设计、代码示例等，共 9 篇文章，持续更新中。
基于单片机的超声波测距报警系统研究
<p>在汽车倒车时,车主可以通过终端显示器,清晰地看到汽车尾部和侧部与附近物体之间的距离,而一旦两者之间的距离小于系统预设的值时,系统就会发出警报,提示司机及时进行处理,避免出现碰撞剐蹭。可见,敏感性强、性能良好、探测范围广的测距报警系统,在日常行车中具有非常重要的应用价值。本文在简要阐述超声波测距运行机制与原理的前提下,对基于单片机的超声波测距报警系统进行了整体设计,并从硬件系统和软件系统两方面
基于数字信号处理的超声手术刀电源控制电路设计与实现
<p>目的:自主研制一款超声手术刀电源控制系统,以减少能量的消耗,维持手术刀的正常温度。方法:对超声换能器在谐振附近的等效电路建立模型,并设计基于数字信号处理(DSP)的超声手术刀的硬件控制系统。结果:经对电源控制系统的电路和工作性能测试,生成的电流和电压的有效值等参数,能够及时调整电源的频率,并达到预期的功能指标,使超声手术刀工作在谐振状态。结论:以DSP为核心设计的超声手术刀电源控制系统,测试
MOSFET开关过程的研究及米勒平台振荡的抑制
<p>设计功率MOSFET驱动电路时需重点考虑寄生参数对电路的影响。米勒电容作为MOSFET器件的一项重要参数,在驱动电路的设计时需要重点关注。重点观察了MOSFET的开通和关断过程中栅极电压、漏源极电压和漏源极电流的变化过程,并分析了米勒电容、寄生电感等寄生参数对漏源极电压和漏源极电流的影响。分析了栅极电压在米勒平台附近产生振荡的原因,并提出了抑制措施,对功率MOSFET的驱动设计具有一定的指导
Wireless Identification
We are in the era of ubiquitous computing in which the use and development of Radio Frequency Iden-<br />
tification (RFID) is becoming more widespread. RFID systems have three main components: reader
Millimeter+Wave+V2V+Communications
Recently millimeter-wave bands have been postu-<br />
lated as a means to accommodate the foreseen extreme bandwidth<br />
demands in vehicular communications, which result from the<br />
disseminatio
Millimeter+Wave+V2V+Communications
Recently millimeter-wave bands have been postu-<br />
lated as a means to accommodate the foreseen extreme bandwidth<br />
demands in vehicular communications, which result from the<br />
disseminatio
不错的 PERL 教程 Find a Perl programmer, and you ll find a copy of Perl Cookbook nearby. Perl Cookbook
不错的 PERL 教程
Find a Perl programmer, and you ll find a copy of Perl Cookbook nearby. Perl Cookbook is a comprehensive collection of problems, solutions, and practical examples for anyone programming
C in A Nutshell Learning a language--any language--involves a process wherein you learn to rely les
C in A Nutshell
Learning a language--any language--involves a process wherein you learn to rely less and less on instruction and more increasingly on the aspects of the language you ve mastered. Whet
An Efficient and Effective Detailed Placement Algorithm Global Swap  To identify a pair
An Efficient and Effective Detailed Placement Algorithm
Global Swap
 To identify a pair of cells that can be swapped to reduce wirelength (others are fixed).
2. Vertical Swap
 S