本文提出了基于AD7745 构成的电容传感器阵列进行烟箱缺条检测的系统。系统由一
个主单片机C8051F020，多个从单片机C8051F310 构成。主从单片机间采用SPI 总线通讯。从单片机与AD7745 通过SMBUS 连接。测量结果表明，系统检测效果可靠，具有很好的应用前景。
关键词： 烟箱缺条；电容传感器；C8051F020；AD7745；
Abstract： A detection system of a shortage in tobacco box based on capacitive sensor array using AD7745 is proposed in this paper. The system consists of a master MCU C8051F020 and some slave MCUs C8051F310. The master and slave MCUs are communicated by SPI bus. The slave MCU is connected to AD7745 through SMBUS. Measurement results show that the detection effect of system is reliable.
Key words：Shortage in Tobacco Box; Capacitive Sensor; C8051F020；AD7745；
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