基于串行芯片AD7887的粉尘浓度信号检测系统的设计

Design of dust concentration signal detection system based on the AD7887

矿用粉尘浓度传感器大多控制系统中嵌入式芯片自带AD对粉尘浓度信号进行检测。在仪器运行过程中,由于该类嵌入式芯片中无内部基准电压模块,当电源电压发生波动时,引起检测出的粉尘浓度不准产生测量误差。针对这一问题,本文提出采用串行AD芯片AD7887对粉尘信号进行检测,利用其内部自带精准的基准电压消除因电源波动对采样造成的影响,从而提高检测的可靠性。

Mine dust concentration sensor is mostly AD to detect dust concentration signal control system embedded chip comes, In the instrument during the operation, because the class embedded chip internal voltage reference module, when the power supply voltage fluctuations occur, the cause of the detected dust concentrations are not allowed to produce measurement errors To solve this problem, this paper proposes a serial AD chip AD7887 the dust signal detection, its interior comes with precision voltage reference eliminate the impact of power fluctuations of sampling, so as to improve the reliability of the detection.