摘要
通用串行总线U SB(U n iversal Serial Bus)具有支持热插拔、传输速度快、可靠性高、可扩展性强等优点,作为一种通信接口规范,它被广泛地应用于PC机和外围设备的通信系统中。设计了以AT 89C 52为M CU,基于U SB芯片PD IU SBD 12的温室环境信息采集系统,实现了对温室环境的温度、湿度、光照和二氧化碳浓度等各项参数的测定,并设计开发了该接口芯片的固件程序,操作系统驱动程序和主机应用程序。驱动程序采用W DM驱动程序模型,实现了U SB设备的热插拔和访问操作。应用程序采用VC++6.0为开发环境,把U SB设备当作文件来操作,实现了数据的批量传输,大大提高了传输速度。
Universal Serial Bus （USB）, as a communication interface specification, is widely applied to communication system between the personal computer and external device. The advantages of USB are of hot inserting and pulling operation, high-speed data transfer, high reliability and high expansibility. A greenhouse environment data acquisition system, which applied the MCU （Micro Control Unit） AT89C52 and the specialized USB interface chip PDIUSBD12 was expatiated in this paper. The designs of hardware, driver software and application software were also introduced. The driver software accepted Windows Driver Model （WDM）, which achieved the USB device hot inserting and pulling operation. The Visual C＋＋ 6.0 was used to design application software. In that procedure the USB device was handled as files and the high speed bulk transfer of data could be realized.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2006年第8期253-255,共3页
Transactions of the Chinese Society of Agricultural Engineering
基金
河北省科技厅基金项目(012134100)
作者简介
程浩（1981-），男，硕士，博士生，主要从事计算机检测与自动控制方面的研究。保定河北农业大学机电工程学院，071001。Email：ctjh@sohu．com
通讯作者：钱东平（1951-），男，教授，博士生导师。保定河北农业大学机电工程学院，071001。Email：qdp@hebau．edu．cn
