论文部分内容阅读
APPLEⅡ微机因其价格低廉,软件丰富,存贮容量大,可靠性良好等优点,在数据采集,过程控制和智能化仪器仪表等领域得到广阔的应用.这些应用中一个共性问题是如何设计一块多通道、高精度、高可靠性的数据采集通道板和相应软件. 数据采集程序是采用查询方式进行A/D转换软件控制的。系统工作原理如下: 程序将I/O插座号和模拟输入的通道号送入指定内存单元.当同步信号到达后,程序查询STS状态,控制转换工作的进行,当需要启动转换器进行数据采集时,使用存数
APPLEⅡ is widely used in data acquisition, process control and intelligent instrumentation due to its low price, abundant software, large storage capacity and good reliability, etc. One of the common problems in these applications is how to design more than one Channel, high-precision, high-reliability data acquisition channel board and the corresponding software.Data acquisition program is to use the query A / D conversion software control. The working principle of the system is as follows: The program sends the I / O socket number and the channel number of the analog input into the specified memory unit.When the synchronization signal arrives, the program queries the STS status to control the conversion work, when the converter needs to be started for data acquisition , Use the number of deposits