大客飞机机电综合控制局域网通信系统设计Large passenger aircraft, mechanical and electrical design of integrated control LAN communications system
Large passenger aircraft, mechanical and electrical design of integrated control LAN communications system (2011-03-02, C/C++, 310KB, 下载2次)
利用MSPd30F149 单片机和AIM21电流环芯片，通过简单的压频转换(多谐振荡器)电路实现了基于电客式差压
传感器的智能差压变送器设计。该设计的特点是利用压频转换电路取代了A／D模块，以极低的产品价格达到了较高的
系统测量精度。采用软件与硬件相结合的信号处理技术，实现了基于HART协议现场总线技术的差压模拟量的测量，通
过进一步采用CPLD器件的量化延时测频技术，将可以达到比传统A／D器件更高的压力测量精度。智能差压变送器；HART协议现场总线；MSP430F149；AIM21
The use of MSPd30F149 chip microcontroller and AIM21 current loop, through a simple voltage to frequency converter (multi-harmonic oscillator) circuit based on power-off-type differential pressure sensor design of intelligent differential pressure transmitter. The design is characterized by the use of voltage to frequency converter circuit to replace the A/D module, a very low price to achieve a high system accuracy. Using a combination of software and hardware signal processing techniques to achieve an agreement based on the HART field bus technology differential analog measurements, using CPLD devices through further quantify the delay frequency measurement techniques, will be able to reach than the traditional A/D device is more high-pressure measurement accuracy. Smart differential pressure transmitter HART protocol field bus MSP430F149 AIM21 (2010-02-01, C/C++, 148KB, 下载123次)
阐述采用Vxworks 实时嵌入式操作系统实现与Windows 系统通过FTP 进行远程访问
的方法，对Vxworks 的网络设施进行了分析，重点阐述了FTP 在服务端的配置及在客
户端的配置与编程。对于使用VxWorks 对其他系统进行远程访问一定的参考意义。
Describes how to use FTP to access remote file in windows system with Vxworks system，
analyzes network facilities of Vxworks, focusing on the configuration and programming in
the service and client with FTP. It has some consulting significance to remote access applications
in other system with Vxworks system (2009-09-09, C/C++, 130KB, 下载7次)