光照度检测仪的设计

在公路隧道交通中,照度的测量和控制是很常见的。基于此设计一种具有自动量程转换功能、测量精度高、成本低的工控型数显照度计。本设计是以单片机Atmega8为核心部件的测量系统,硬件部分主要由信号采集、信号放大、A/D转换、数码显示和RS485通讯接口几部分。整个系统软件部分主要有：传感器数据采集模块、光亮度检测模块、通讯接口模块、光亮度显示模块。通过实验测试,本系统设计合理,其测量范围、分辨率、光谱响应误差基本上达到了设计的要求。

Light detector design and fabrication

In the highway tunnel traffic,the illumination of the measurement and control is very common.Based on this design an automatic range conversion,high accuracy,lower cost industrial-type digital light meter.The design is based on the core components of the microcontroller Atmega8 measurement system,mainly by the signal acquisition hardware,signal amplification,A/D conversion,digital display and RS485 communication interface parts.Part of the system software are:sensor data acquisition module,the light intensity detection module,communication interface module,display module brightness.Through experimental tests,the system design is reasonable,and the measurement range,resolution,spectral response error basically meet the design requirements.