光敏电阻特性的实验研究
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摘要
简要介绍了光敏电阻的工作原理及基本特性,用实验方法研究了光敏电阻的伏安特性、光照特性、光谱特性,光照强度与光电流之间以及入射光波长与亮电阻之间的关系。实验结果表明,在光照强度较弱时,光敏电阻的电压与电流满足线性关系,在光照强度较强时,电压增大的同时,电流增大的更快;在一定工作电压下,当受到一定波长范围的光照时,对于同一波长的入射光,随着光照强度的增强,光电流在增大,亮电阻在减小;对于不同波长的入射光,在相同光照强度下,随着入射光波长的增大,光电流先增大,后减小,而亮电阻先减小,后增大。表明光敏电阻对光具有选择性。
The working principle and basic characteristics of light dependent resistor are introduced briefly,the current-voltage characteristic,conductance-irradiance characteristic,spectral characteristic,the relationship of strength of illumination and light current and the relationship of wavelength of incident light and light resistance are studied by experimental method.The results show that when the strength of illumination is weak,the relationship of voltage and current of light dependent resistor is linear,while when the strength of illumination is strong,the current increases faster when the voltage increases.Under certain working voltage,when illuminated by a certain wavelength range,for the incident light with same wavelength,with the increase of the intensity of illumination,then the photocurrent increases and the brightness resistance decreases,while for incident light of different wavelengths,at the same light intensity,with the increase of the incident light wavelength,the photocurrent increases first and then decreases,while the light resistance decreases first and then increases.The phenomenon indicates that the light dependent resistor has selectivity to light.
The working principle and basic characteristics of light dependent resistor are introduced briefly,the current-voltage characteristic,conductance-irradiance characteristic,spectral characteristic,the relationship of strength of illumination and light current and the relationship of wavelength of incident light and light resistance are studied by experimental method.The results show that when the strength of illumination is weak,the relationship of voltage and current of light dependent resistor is linear,while when the strength of illumination is strong,the current increases faster when the voltage increases.Under certain working voltage,when illuminated by a certain wavelength range,for the incident light with same wavelength,with the increase of the intensity of illumination,then the photocurrent increases and the brightness resistance decreases,while for incident light of different wavelengths,at the same light intensity,with the increase of the incident light wavelength,the photocurrent increases first and then decreases,while the light resistance decreases first and then increases.The phenomenon indicates that the light dependent resistor has selectivity to light.
引文
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[2]丁健,王俊.光伏电池板跟踪系统的设计[J].巢湖学院学报,2014,16(6):10-12.
[3]李晶,邓琳,张文君.基于P89LPC936的LED室内照明控制系统[J].工程技术,2013(12):24.
[4]赵永潜,张亚萍,许广建,等.基于液晶电光效应的智能调光玻璃装置[J].实验技术与管理,2016,33(3):101-104.
[5]徐少辉,李开开,范诗若.光敏电阻起爆爆炸装置的特性研究[J].中国人民公安大学学报,2014(3):80-82.
[6]邱兆美,于瑞锋,张昆,等.基于光敏电阻的茎秆直径无损测量方案试验分析[J].中国农机化学报,2016,37(5):206-208.
[7]朱凯翔,徐平,焦洪臣,等.傅里叶变换光谱仪用于白光光谱测量的实验设计[J].大学物理,2014,33(6):47-50.
[8]梁燕,于东升,陈昊.基于模拟电路的新型忆感器等效模型[J].物理学报,2013,62(15):158501-9.
[9]张继成,陈海涛,欧阳斌林,等.基于光敏传感器的精密播种机监测装置[J].清华大学学报,2013,53(2):65-68.
[10]张立立,杨华,杨清格.基于单片机的室内温度控制系统设计与实现[J].实验室研究与探索,2015,34(7):63-66
[11]曾亚光,冯冠平,陈俊波,等.基于Lab VIEW的光敏电阻自动测试系统[J].现代电子技术,2012,35(22):136-137.
[12]王凌波.基于光敏电阻特性的光控灯实验平台设计[J].兰州石化职业技术学院学报,2015,15(4):23-25.
[13]金丹青,章国荣,秦艳芬.光电传感器基本特性的计算机数据采集[J].宁波工程学院学报,2012,24(1):44-47.
[14]孙宝光,刘春兰.小光强单色光照射下的光敏电阻特性研究[J].大学物理实验,2015,28(4):31-32.
[15]关海艳,冯毅,何春凤,等.光敏电阻综合演示仪的设计[J].物理实验,2014,34(2):25-27.
[16]杨东,轩克辉,董雪峰.光敏电阻的特性及应用研究[J].山东轻工业学院学报,2013,27(2):49-52.