面粉厂氧气和粉尘浓度检测系统的设计

Design of oxygen and dust concentration detection system in flour mill

面粉加工厂的粉尘浓度如果控制不好,不仅会提高工人职业病的发病率,而且极易引起粉尘爆炸事故,为了控制预防危害的发生,系统以STC89C52作为主要控制芯片,结合粉尘浓度传感器和氧气浓度传感器、A/D转换器、LCD显示电路以及报警电路等模块,实现对粉尘浓度和氧气浓度的值进行实时检测、显示,并在安全范围之外自动发出声光报警信号。通过对某小型面粉制粉车间的测试数据及误差分析,表明该系统可以实时监测一个相对密闭空间的氧气和粉尘浓度含量,该系统结构简单、易于操作,具有一定的实用价值。

The dust concentration of flour processing factory if the control is not good, it will not only improve the inci- dence rate of workers occupation disease, but also can easily cause dust explosion prevention, in order to control the harm, the system uses STC89C52 as the main control chip, combined with the dust concentration sensor and the oxygen concentration sensor, A/D converter, LCD display circuit and the module of warning circuit etc. to realize the dust con- centration and oxygen concentration value of the real-time detection and display, and outside a safe range automatically give an alarm signal. Through the analysis of the test data and the error of a small flour milling workshop, show that the system can real-time monitor the dust concentration and oxygen content a relatively confined space. The system is simple and easy to operate, and has a certain practical value.