摘要
植物对光的利用是以光子为单位吸收和转化的,采用光量子系统中光量子数或光量子密度为单位研究植物对光照强度的需求更合理科学。快速估算光度系统与光量子系统度量单位的转化系数,有利于准确展示科研结果。本文分析得到380~780 nm波段中不同波长的转化系数,在波长550 nm时,转化系数最大,为147.858 lm/μmol。对于单峰LED光谱提出“三点估算法”,转化系数的计算值β与估算值β′之比的平均值为86.1%~93.4%,估算值β′的准确性与光谱的半峰宽、形态密切相关。对于蓝光+红光、蓝光+红光+绿光、白光+红光多种灯珠组合的目标光谱,β与β′之比的平均值为96.1%~105.9%。该研究结果能够快速计算lm、μmol或lx与μmol/(m^(2)·s)的转化系数,为LED在植物照明领域的广泛应用提供技术支持。
Theuse of light by plant is absorbed and transformed by photons,therefore,it is more reasonable and scientific to study the demand of plants for light intensity by using the number or the density of light quantum in the light quantum system as a unit.Quickly estimating the conversion coefficient of measurement units of photometric system and light quantity subsystem,is conducive to accurate display of scientific research results.This paper analyzed and obtained the conversion coefficients of different wavelengths in 380~780 nm band.The maximum conversion coefficient is 147.858 lm/μmol at the wavelength of 550 nm.“Three Duration Technique”method is proposed for single peak LED spectrum,and the average value of the ratio is 86.1%~93.4%with the calculated value of conversion coefficientβto the estimated value ofβ′.The accuracy ofβ′is closely related to the half peak width and morphology of the spectrum.For the target spectrum of multiple LEDs combinations:Blue light+red light,blue light+red light+green light,white light+red light,theaverage ratio ofβtoβ′is 96.1%~105.9%.The research results can quickly calculate the conversion coefficients of lm andμmol or lx andμmol/(m^(2)·s),providing technical support for the wide application of LED in horticulture lighting.
作者
马健
MA Jian(Fujian Sananbio Technology CO.,LTD.,Xiamen 361008,China)
出处
《照明工程学报》
2022年第5期110-114,共5页
China Illuminating Engineering Journal
基金
福建省科技计划项目“植物工厂蔬菜生产专用灯具及其光调控技术研发与应用”(编号:2021N3006)。
