demand
共 105 篇文章
demand 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 105 篇文章，持续更新中。
MAX6675在K型热电偶温度测量中的应用
<p>针对工业测温控温存在的需求,介绍一种基于热电偶测温控制系统,系统包括温度数据采集及控制器两部分。温度数据采集由K型热电偶、K型热电偶串行模数转换器MAX6675组成,控制器由单片机进行数据处理,固态继电器进行通断控制。本文阐述了MAX6675与单片机组成的测温控温系统的硬件组成和软件的设计思路。实践表明:该系统结构简单,软件实现容易、操作方便,运行可靠、成本较低,特别适合小型企业简单测温控制
太阳能光伏植物生长系统的设计与试验
<p>为实现无常规电力条件下植物可控环境培育,提出了一种太阳能光伏植物生长系统。该系统针对高热地区,采用光伏发电系统、培育室、冷却系统和环控系统等4部分组成了降温环控装置,光伏发电系统为整个系统提供用电;培育室是保障植物正常生长的区域,采用密封处理,孔隙率为0.0024‰;冷却系统由制冷机、制冷风扇、冷却铜管和循环水泵组成,用于降低培育室内温湿度,维持培育室环境参数平衡;培育室环境控制基于STC8
基于Arduino Nano的智能车辆管理系统设计
<p>针对日益增长的车辆智能管理化需要,文中以ATmega328 Arduino Nano单片机作为控制核心搭建了一个车辆管理系统模型,该系统包括车载模块和路边模块以及上位机模块。并根据系统要求,进行总体控制方案及硬件电路的设计,编写了相应的软件代码,通过实验研究,利用RFID技术实现了该智能车辆管理系统。研究结果表明,该系统能够实现车辆自动定位、信息查询及自动计费等功能,可用于停车场或企业内部车
Altium Designer 09 中文版软件下载，附破解安装教程
<p><span style="font-size: 14px;">Altium Designer Summer 09的发布延续了连续不断的新特性和新技术的应用过程。这必将帮助用户更轻松地创建下一代电子设计。同时，我们将令Altium Designer更符合电子设计师的要求。Altium的一体化设计结构将硬件、软件和可编程硬件集合在一个单一的环境中，这将令用户自由地探索新的设计构想。在整个设计构成
linux内核编程指南
<p>因此，您想编写一个内核模块。您知道C，您已经编写了一些可以作为进程运行的常规程序，现在您想知道真正的动作在哪里，一个通配指针可以擦掉文件系统，核心转储意味着重新启动。<br/>内核模块到底是什么？模块是可以根据需要加载和卸载的代码段。它们扩展了内核的功能，而无需重新引导系统。例如。<br/>模块驱动程序的一种类型是设备驱动程序，它允许内核访问没有模块的系统硬件，我们将不得不构建单片内核并将新
B型剩余电流保护器设计
<p>随着光伏发电系统快速发展,以及电动汽车充电桩的普及,传统的剩余电流保护器无法满足实际需求。介绍了一款B型剩余电流保护器,采用磁调制剩余电流互感器和零序电流互感器采集剩余电流。根据GB/T 22794—2017标准要求,可识别1 kHz及以下的正弦交流、带和不带直流分量的脉动直流、平滑直流等剩余电流信号。经信号调理电路将电压信号送到单片机进行采集和判断。通过试验测试,该样机在测试精度和速度上均
作为单身女性旅行者的新趋势
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学术论文
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Thedemandintourismischaracterizedbyseveralnewtrendsinpresenttime.Tourism<br />
demand is strongly influenced by demographic, environmental, technological<br />
changes and changes
RFID+and+Sensor+Network+Automation
With the continued growth in the world's population, there is a need to ensure availability of<br />
enough food to feed everyone. Advances in science and technology have helped not only to<br />
incr
Wide Area Monitoring, Protection
Today, electric power transmission systems should face many demanding chal-<br />
lenges, which include balancing between reliability, economics, environmental,<br />
and other social objectives to op
Intelligent+Microgrid+Management
A modern power grid needs to become smarter in order to provide an affordable,<br />
reliable, and sustainable supply of electricity. For these reasons, a smart grid is<br />
necessary to manage and c
Electric+Distribution+Network+Planning
Electric distribution networks are critical parts of power delivery systems. In recent<br />
years, many new technologies and distributed energy resources have been inte-<br />
grated into these netwo
Communication+Networks
n its Framework and Roadmap for Smart Grid Interoperability Standards, the US<br />
National Institute of Standards and Technology declares that a twenty-first-century<br />
clean energy economy deman
Value+Driven+Product+Planning+and+Systems
The “bottom-line” metrics of cash flow, demand, price, and return on investment<br />
are driven by a second set of financial metrics represented by value to the<br />
customer, cost, and the pace of
Wireless-Based+Software+Systems
The wide deployment of wireless networks and mobile technologies, along with the<br />
significant increase in the number of mobile device users, have created a very strong<br />
demand on various wir
Wireless+Multi-Antenna+Channels+Modeling
The explosion in demand for wireless services experienced over the past 20 years<br />
has put significant pressure on system designers to increase the capacity of the<br />
systems being deployed. Wh
Ultra Wideband - Circuits
Recent advances in wireless communication technologies have had a transforma-<br />
tive impact on society and have directly contributed to several economic and social<br />
aspects of daily life. Inc
Thermal+Management+of+Telecommunications+Equipment
The need to develop reliable microelectronic devices capable of operating at high<br />
speeds with complex functionality requires a better understanding of the factors<br />
that govern the thermal p
qorvo-carrier-aggregation-fundamentals
Mobile operators must continuously pursue cost‐<br />
effective and efficient solutions to meet the high data<br />
demand requirements of their subscribers. Limited spectrum<br />
allocations and non
Propagation Channel Characterization
The investigation of the propagation channel is becoming more and more important in mod-<br />
ern wireless communication. The demand for spectral efficiency motivates exploitation of<br />
all channe
Physical Layer Security in Wireless Communications
The ever-increasing demand for private and sensitive data transmission over wireless net-<br />
works has made security a crucial concern in the current and future large-scale, dynamic,<br />
and hete