动态链接库在数据采集系统中的一个应用

在实时系统的监测和控制过程中，为了达到数据采集的实时性和准确性．采用了编制动态链接库的方法，对数据采集卡进行读写操作。详细介绍了动态链接库的功能及编制过程，然后介绍了在直流调速系统中，利用动态链接库来连接数据采集系统和控制器的一个具体应用。直流调速系统的实际运行结果表明，使用动态链接库来对数据采集卡进行读写操作，能够保证数据采集的实时性和准确性，被控系统能够达到控制要求。

Application of the Dynamic Link Library in Data Acquisition Systems

In order to assure the properties of real-time and veracity of the data acquisition in the process of monitor and control of the real-time system, the way of designing program of the dynamic link library is used to read and write the data acquisition card. Firstly, the functions and the process of designing programs of the dynamic link library is introduced. And then, an application of linking the data acquisition system with the controller by means of the dynamic link library in the direct current timing system is given. The actual result of the direct current timing system shows that it can assure the real-time and the veracity of the data acquisition and the system can attain the manipulative needs with reading and writing the data acquisition card used the dynamic link library.