题目：PM2.5 粉尘测量的设计摘要当前工业化水平不但发展，人民生活水平日益提高，可学技术产品的涌现为人们带来了很大便利。但越来越多的环境问题日益凸显，逐渐成了人们关注的焦点。环境污染问题首当其冲，治理污染的能力急需加强。人们肆意的行为已经严重的影响了环境，为我们和我们的下一代的生活带了极大的挑战，而污染中最紧要的问题就是直径小于 2.5 微米的颗粒物，PM2.5 对空气质量造成严重污染，对人体呼吸系统产生影响，对人体健康造成损伤，因此 PM2.5 的监测和治理就显得尤为重要。 本研究提出了 PM2.5 可吸入颗粒物测量的设计原理，控制核心为STC89C51 单片机。空气中粉尘浓度的测量由 GP2Y1010AU0F 灰尘传感器，然后将空气粉尘浓度显示在 LCD1602 显示器上，当峰值达并触发到设置好的和阶段报警值时，检测仪开始报警，测量人员可通过不同的指示灯颜色确定 PM2.5 的浓度。最终电路实现空气质量 PM2.5 粉尘测量的数据，一次来显示当前空气中PM2.5 浓度与空气质量。关键词：PM2.5 测量；STC89C51 单片机；GP2Y1010AU0F 灰尘传感器；LCD1602 显示器。Design of a Digital Frequency Measurement CircuitAbstractWith the continuous development of modern science and technology, more and more products have been brought into people's lives, but more and more problems have arisen. Environmental pollution is the first problem, and the ability to control pollution needs to be strengthened urgently. People's indiscriminate behavior has seriously affected the environment and posed great challenges for us and our next generation's life. The most important problem of pollution is PM2.5 inhalable particulate matter, which is a kind of particulate matter that can be inhaled into the bronchus by human body less than 2.5mm in diameter. It is difficult to discharge after inhalation. Therefore, the measurement and treatment of PM2.5 is particularly important.In this paper, the design idea and principle of PM2.5 dust measurement are presented. STC89C51 is the main control core, GP2Y1010AU0F dust se...
