基于STM32的100L/min尘埃粒子计数器控制系统设计

摘要

针对传统尘埃粒子计数器检测规格小、精度差、体积大、功能单一等问题,设计了一种新型的尘埃粒子计数器控制系统.控制系统以STM32F103芯片为核心,通过信号分级采样电路、放大电路、电源电路和通信电路实现对流量和粒子信号的采集与处理,并将结果通过触摸屏显示.运行结果表明:本控制系统运行过程稳定,检测规格可达100 L/min,可检测6路不同规格的粒子数,最小能够检测0.3 μm的尘埃粒子,并且检测结果满足国家计量检测标准.%In order to solve the problems of small detection size,low accuracy,large volume,single function and other issues of traditional dust particle counter,a new type of dust particle counter control system is designed.STM32F103 chip is taken as the core,through the classifying pulse acquisition circuit,amplifier circuit,power supply circuit and communication circuit,flow and particle signal acquisition and processing are achieved,and the results are displayed through the touch screen.The result shows that the control system is stable,the detection specification is up to 100 L/min,the number of particles of six-way different specifications can be detected,it can detect 0.3 μm minimum particle size of the dust,and the test results can meet the national measuring and testing standards.