基于NIR技术的PET/PVC废旧塑料分离系统

摘要

介绍了一种基于近红外探测技术的PET/PVC废旧塑料分离系统.该系统根据不同塑料对近红外光谱吸收不同的原理,结合窄带滤光片和光电传感器设计了红外检测装置,开发了以STM32F103X为核心,包括信号处理、A/D转换、控制模块、分离模块、CAN总线通信模块在内的自动鉴别分离系统.实验结果表明:该系统测量结果准确,响应速度快,理想状态下可实现2种塑料100％分离；采用ARM嵌入式处理器,实时性好,运行稳定,可脱机运行.%A simple device for automated sorting of post-consumer PET and PVC waste plastic is described. Different plastic has different NIR spectrum,an infrared spectral detection is designed by a photoelectric sensor in conjunction with a narrowband filter. The system platform is centralized on STM32F103X, it consists of signal conditioning module,A/D conversion module,control,separation module and communication module. According to the results, PVC particles are apart from PET plastics with 100 % efficiency in ideal separation. The system runs precisely and quickly, it also can operate offline.