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介绍一种基于R-17MED化学传感器的氧气体积分数检测仪设计与实现。系统可实现矿井等特殊环境中氧气体积分数的检测,保证特殊环境中工作人员的健康与安全。采用R-17MED化学传感器作为数据采集前端,将氧气体积分数转变成电压信号并直接送至TLC2543的采集通道(AIN4)进行A/D转换,转换后,通过和AT89C51连接的LCD编程实现氧气体积分数显示。将不同环境中得到的测试数据与理论数据相比较,系统测试精度达到97.78%,符合工业生产需求。
The design and implementation of an oxygen volume fraction detector based on R-17MED chemical sensor are introduced. The system can detect the oxygen volume fraction in special environment such as mine and ensure the health and safety of staff in special environment. The R-17MED chemical sensor is used as the data acquisition front end to convert the oxygen volume fraction into a voltage signal which is sent to the TLC2543 acquisition channel (AIN4) for A / D conversion. After conversion, the oxygen volume fraction is achieved through the LCD programming connected to the AT89C51 display. The test data obtained in different environments are compared with the theoretical data, the system test accuracy reaches 97.78%, in line with industrial production needs.