矿用成像设备的电路噪声抑制研究

Research on Circuit Noise Suppression of Mining Imaging Equipment

高性能红外成像设备是实现煤矿井下设备状态实时在线监测与动态精准预测的有效手段,过大的噪声干扰可能淹没探测器信号,降低动态范围。通过研究相关双采样结构,分析了焦平面电路的噪声特点及噪声抑制机理,设计了64×1线列电路。实验表明,相关双采样结构可以有效抑制KTC噪声,降低电路输出总噪声。

The high performance infrared imaging equipment is an effective means to achieve real-time online monitoring and dynamic accurate prediction of underground equipment status in coal mine.Excessive noise interference may submerge detector signals and reduce dynamic range.By studying correlated double sampling structures,the noise characteristics and noise suppression mechanism of focal plane circuits were analyzed,and desigened 64×1 line array circuit.Experiments have shown that the correlated double sampling structure can effectively suppress KTC noise and reduce the total output noise.