设计一种基于ATmega16L单片机的温度控制系统，阐述该系统的软硬件设计方案。采用模块化设计方法，利用增量式PID算法使被控对象的温度值趋于给定值。实验结果表明该系统具有良好的检测和控制功能。 Abstract: This paper designs a temperature control system based on ATmega16L，describes the hardware and software de－sign scheme of the system，adopts the modularized design method and utilizes the incremental PID algorithm to realize the temperature of controlled device incline to the given value.The experiment result indicates that the system has good detec－tion and control function
上传时间： 2013-10-09
上传用户：stvnash
详细介绍工控软件组态王与单片机多机串口通讯的设计原理。分析组态王提供的直接与单片机串口通信方法的优点，给出系统基于RS-485总线传输的接口电路原理图。根据组态王提供的通讯协议和单片机多机串口通讯的原理，给出程序设计流程与思路。 Abstract: In this paper，the design principle of communication between multi-SCM and KingView by serial ports is described in detail.We analysis the advantage of method supplied by KingView,by which KingView can communicate with serial ports of SCM directly，and provide the system’s interface circuit based on the RS-485transmission line.We provide flow diagram of programming and thinking on the basis of communication protocol supplied by KingView and principle of communication among multi-SCM through serial ports.
上传时间： 2013-12-19
上传用户：tecman
实时时钟是微机保护装置的重要部件，在讨论PCF8583结构与功能的基础上，提出采用dsPIC33F系列微处理器与串行I2C时钟PCF8583的接口设计方案，给出了相应的接口电路与软件流程。该设计方案结构简单，可靠性高，开发周期短，具有一定的实用与参考价值。所设计的微机保护装置已投入现场运行，效果良好。 Abstract: Real-time clock chip is an important part in microcomputer protection device.Based on discussing the structure and function of PCF8583，a new interface scheme which uses dsPIC33F microprocessor and serial clock chip（I2C）PCF8583is proposed.The method of the circuit design and the main software flow are introduced in this paper.The scheme has simple structure，higher reliability and shorter exploitation cycle，so has definite practicality or reference value.The microcomputer protection device has been put into operation with better effects.
上传时间： 2013-11-18
上传用户：Thuan
介绍基于ISA总线与KH-9300的数据采集板卡的设置，详细说明8254定时计数器及8259中断控制器的结构特点、工作方式、控制字等，探讨中断类型、中断处理程序、中断矢量表及其填写。重点讲述使用TorboC编写中断服务程序的方法，应注意的主要问题及程序测试的结果。 Abstract: The settings of KH-9300 data acquisition board based on the ISA bus is introduced,the structural characteristics,working methods,control characters of the timing counter 8254 and interruptioncontroller 8259 are explained in detail.The interruption type,interrupt handling programs,interruption vector table and its filling also are discussed.Further,great emphasis is put on the method of interrupt service program compiled by Torbo C,the main issues that should be noted,and the results of program testing.
上传时间： 2013-11-14
上传用户：qq527891923
该系统由单片机89S52控制模块，程控宽带放大模块，整形模块，FPGA内频率、相位差测量模块等构成，采用等精度测频法测出频率和周期，可测量有效值为0.01～5V，频率范围1Hz～20MHz信号的频率、周期信号，精度高达10-6。采用计数法测量相位差，该系统可测量有效值0.5～5V，频率10Hz～100kHz信号的相位差，精度为1°。系统功能由按键控制，测量结果实时显示，人机界面友好。 Abstract: The system consists of the following functional blocks:89S52microcontroller controlling module,programmable amplifier module,comparator module,frequency and phase difference testing module in the FPGA.The system use the equal accuracy frequency-examining technique it measures frequency and circle of signal which its ranges is from1Hz to20MHz and the amplitude of which its range is from0.01Vrms to5Vrms,precision is up to10-6.Using of count method,the system detects the phase difference of signal,the amplitude of whic its range is from0.5Vrms to5Vrms and the frequency of which its ranges is from10Hz to100kHz,precision is up to1°,The system functions is controlled by certain keys,measurement results are displayed in real-time and it is friendly interface.
上传时间： 2013-11-04
上传用户：CHINA526
以89S52单片机和EP1C6Q240C8型FPGA为控制核心的多功能计数器，是由峰值检波、A/D转换、程控放大、比较整形、移相网络部分组成,可实现测量正弦信号的频率、周期和相位差的功能。多功能计数器采用等精度的测量方法，可实现频率为1Hz～10MHz、幅度为0.01～5Vrms的正弦信号的精确测频，以及频率为10Hz～100kHz、幅度为0.5～5Vrms的正弦信号精确测相。液晶显示器能够实时显示当前信号的频率、周期和相位差。该多功能计数器精度高，界面友好，实用性强。 Abstract: A multi-function counter，which uses89S52MCU and EP1C6Q240C8FPGA as a control core，consists of peak detector，A/D conversion，program-controlled amplification，compared shaping and phase-shifting network part.The counter measures the frequency，period and phase of sinusoidal signal.With the equal precision method,the multi-function counter achieves the precise frequency measurement of the sinusoidal signal which its frequency is from1Hz to10MHz，its amplitude is from0.01Vrms to5Vrms，as well as the accurate phase measurement of the sinusoidal signal which its frequency is from10Hz to100kHz，its amplitude is from0.5Vrms to5Vrms.The LCD monitor real-time displays the frequency，period and phase difference of current signal.The multi-function counter features high precision，friendly interface，and strong practical.
上传时间： 2013-11-15
上传用户：gy592333
介绍基于VHDL的微型打印机控制器的设计。论述了微型打印机的基本原理，以及实现控制器的VHDL语言设计。打印机的数据来自系统中的存储模块，根据需要控制打印。该微型打印机控制器可取代传统的微型打印机,且抗干扰性好,可靠性高，具有较强的移植性，稍加改动就可应用于不同场合。 Abstract: This paper introduced the design method of micro printer controller based on VHDL.The basic principles of microprinter is explained,as well as the realization of the controller by VHDL language.The printer data is from the system memory modules,can control printer.The design of microprinter controller has antigood and high reliability，it can replace the traditional printer.The controller has very good portability,and need little modify that can use in different situation.
上传时间： 2013-11-03
上传用户：dudu1210004
介绍了采用ATmega48单片机实现三相无刷直流电机控制器的方法。利用Atmega48获得带死区的脉宽调制（PWM）、霍尔传感器的换相处理、正弦驱动信号的产生和电机转速的控制等功能。采用该方法的优点是所需的外围器件少，成本低。 Abstract: The method of 3-phase brushless DC motor control based on ATmega48 is presented in this paper.The system uses ATmega48 to generate PWM signals with dead-time, hall sensors signals commutation，sine driving signal and rotational speed of motor.Using this method，the needed external devices are few, the cost is low.
上传时间： 2013-12-09
上传用户：330402686
在开放式数控系统结构模型的基础上，研究了基于ISA总线的DSP通信控制原理。采用中断方式完成了PC机和DSP之间的通信。介绍了以DriverWorks为工具开发ISA设备WDM驱动程序的方法，探讨了中断处理、驱动程序与应用程序之间的通信,简要说明了驱动程序的安装与调试。通过调试,系统设计运行稳定。 Abstract: The ISA bus and DSP correspondence control principle is investigated in the basis of the existing open architecture numerical control system.The interrupt method is used to realize the communication between PC and DSP based on the ISA bus.The methods of WDM driver exploitation for ISA device using Driver Works are introduced.The main process of driver program and the keys such as handle interrupt and the communication between the drivers and application are presented.And how to debug and install the drive is explained.
上传时间： 2013-11-04
上传用户：kang1923
Mega16是一款采用先进RISC精简指令，内置A/D的8位单片机，可支持低电压联机 Flash和EEPROM 写入功能；同时还支持 Basic和C 等高级语言编程。用它设计电子时钟不仅成本低，硬件简单，而且很容易实现系统移植。介绍了如何利用AVR系列单片机Mega16及1602字符液晶来设计电子时钟的方法，同时给出了相应的电路原理及部分语言程序。 Abstract: ?Mega16 is a high-performance, low power consumption, the use of advanced RISC concise instructions, built-in A/D 8-bit microcontrollers, the on-line support for low-voltage Flash, EEPROM write function. Except Mega16 also support the Basic, C, and other high-level language programming.The electronic clock which is deisgned by Mega16 is not only low-cost, simple hardware, but easy to achieve system migration.The design method of electrioic clock based on the AVR Mega16 and character LCD1602 is introduced in this paper,and the corresponding circuit electrionic and some language program are given.
上传时间： 2014-12-27
上传用户：zl5712176
