基于单片机的远程无线风扇控制系统研究

传统风扇的控制方式单一,无法实现灵活操作,难以满足人们日益多样化的需求。综合利用了无线通信技术、单片机以及感应器,实现了对风扇运行状态的远程调控、温度自动检测以及风扇转速的自动调节。经过实践的检验显示,基于单片机的远程无线风扇控制系统具有较好的工作稳定性以及较高的工作性能;同时,该系统操作比较简单,只需要设置相应的工作参数即可。所研究的基于单片机的远程无线风扇控制系统具有设计成本较低、可扩展性强、便于操作等优点,分析探讨了基于单片机的远程无线风扇控制系统的建立与设计问题。     

BORLAND C 实现单片机向PC机的数据传送方法

根据单片机与ＰＣ机的结构特点, 用ＢＯＲＬＡＮＤＣ＋ ＋ 语言, 调用嵌入汇编的方法, 来实现单片机向ＰＣ机进行串行数据传送的方法。可以完成高波特率的传送。并给出了应用程序。     

一维自动位置校准的光伏电池控制装置设计

从光电转换效率角度,提出基于PCI16F57微控制器和步进电机的一维自动校准光伏电池位置控制器装置方案.     

基于单片机8031的太阳能LED交通警示板设计

本设计以太阳能为能源,给蓄电池加上充、放电保护装置,防止过充电和过放电.该警示板设置在夜间有事故隐患的路段,以太阳能光伏板为传感器的光控电路,控制LED在白天关闭、夜间开启.     

Current control of brushless dc motor based on a common dc signal for space operated vehicles

The objective of the paper is to build a simple current controlled modulation technique for brushless dc motors. In electric traction and most other applications, a wide range of speed and torque control of the electric motor is required. The dc machine fulfills these requirements, but it requires constant maintenance. In the brushless permanent magnet motors, they do not have brushes and so there will be lesser maintenance. Brushless dc motors are widely used in applications which require wide range of speed and torque control because of its low inertia, fast response, high reliability and less maintenance. This current controlled technique is based on the generation of quasi-square wave currents using only one controller for the three phases. The current control strategy uses a triangular carrier for the power transistors which is simpler and more accurate than any other options. The advantages of this technique are: (a) The stator currents are completely characterized by their maximum amplitude. (b) The three phases are controlled with the same dc component, and then the phase currents are kept at exactly the same magnitude I_max. (c) The dc link current measurement is not required. (d) Phase currents are kept balanced and phase over currents are eliminated.     

提高单片机控制器可靠性的设计方法

可靠性是单片机控制器能否成功应用的最关键问题。从多项应用工程中归纳出一些提高可靠性的方法,讨论了自动复位、模拟信号变换、开关信号变换硬件电路的设计,具体给出了实际应用中的数据。     

微型智能心电图机

文中介绍了微型12导智能心电图机及其电路设计。该机通过采用新型的微控制器和电路设计方法,具有高性能、低成本、操作简单的特点,并可进行多项心电参数自动分析。