光敏传感器实验报告

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目 录

TOC \o "1-2" \u 一、摘要 1

二、设计要求3

三、方案设计5

1、方案说明6

2、方案论证7

四、光敏电阻的结构和原理7

五、光敏传感器的工作原理8

六、电路的工作原理9

七、单元电路设计、参数计算和器件选择10

1、单元电路设计 5

2、参数计算 5

3、器件选择 6

八．总结12

九．参考文献13

摘要

光传感器是利用光敏元件将光信号转换为电信号的传感器，它的敏感波长在可见光波长附近，包括红外线波长和紫外线波长。光传感器不只局限于对光的探测，它还可以作为探测元件组成其他传感器，对许多非电量进行检测，只要将这些非电量转换为光信号的变化即可。

光照强度自动检测显示系统，该系统可以自动检测光照强度的强弱并显示让人们知道此时光照强度的强弱。人们可以设定光照强度的范围，一旦超出此范围该系统可以发出警报通知或直接采取措施使光照强度在此范围内。人们可以通过看此装置的显示了解现在的光照状态，做合理的光照调节。该设计可分为三部分：即光照检测部分、信号处理部分、光强显示部分。还可加上报警部分。对于光照检测部分可利用光敏电阻传感器作为检测元件，它可以完成从光强到电阻值的信号转换，再把电阻值转换为电信号就可以作为系统的输入信号。对输入信号处理后，就可以用来显示了。对于显示部分可利用发光二极管来显示，不同的光强对应于不同的发光二极管点亮，就能简单的显示出不同的光强了。

关键词：光敏电阻；光电传感器；光照强度；发光二级管

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The light sensor is the use of photosensitive element will be optical signals are converted to electric signals of sensors, its sensitive wavelength in the visible light wavelength near, including infrared wavelength and ultraviolet wavelength. The light sensor is not limited to light detection, it also can be used as detection components other sensors, for many non-electricity testing, as long as these non-electricity conversion for light signal can be change.

Light intensity automatic detection display system, this system can automatically detect the intensity of illumination intensity and display to let people know the strength of the light intensity at this time. People can be set illumination intensity range, once beyond this range the system can issue warning notice or directly to take measures to make the light intensity in this range. People can see through this device display learn now light condition, to do a reasonable light regulation. This design can be divided into three parts: namely light detection part, signal processing part, intensity of light display section. Still can add alarm part. For light detection part available photosensitive resistance sensor as the test components, it can complete from intensity to resistance signal conversion, again resistance are converted to electric