GY-30感光模块中英翻译.doc

数字光强度检测模块:GY-30采用ROHM原装BH1750FVI芯片供电电源 ：3-5v光照度范围：0-65535 lx传感器内置16bitAD转换器直接数字输出，省略复杂的计算，省略标定不区分环境光源接近于视觉灵敏度的分光特性可对广泛的亮度进行1勒克斯的高精度测定标准NXP IIC通信协议模块内部包含通信电平转换，与5v单片机io直接连接送STC 51 C语言测试代码送AVR M16 C语言测试代码有关知识背景1967年法国第十三届国际计量大会规定了以坎德拉、坎德拉/平方米、流明、勒克斯分别作为发光强度、光亮度、光通量和光照度等的单位，为统一工程技术中使用的光学度量单位有重要意义。 为使您了解和使用便利，以下将有关知识做一简单介绍：1.candela的定义1. 烛光、国际烛光、坎德拉（candela）的定义在每平方米101325牛顿的标准大气压下，面积等于1/60平方厘米的绝对“黑体”（即能够吸收全部外来光线而毫无反射的理想物体），在纯铂（Pt）凝固温度（约2042K获1769）时，沿垂直方向的发光强度为1 坎德拉。并且，烛光、国际烛光、坎德拉 三个概念是有区别的，不宜等同。从数量上看，60 坎德拉等于58.8国际烛光，亥夫纳灯的1烛光等于0.885国际烛光或0.919坎德拉。2. 发光强度与光亮度发光强度简称光强，国际单位是candela（坎德拉）简写cd。Lcd是指光源在指定方向的单位立体角内发出的光通量。光源辐射是均匀时，则光强为I=F/，为立体角，单位为球面度（sr）,F为光通量，单位是流明，对于点光源由I=F/4 。光亮度是表示发光面明亮程度的，指发光表面在指定方向的发光强度与垂直且指定方向的发光面的面积之比，单位是坎德拉/平方米。对于一个漫散射面，尽管各个方向的光强和光通量不同，但各个方向的亮度都是相等的。电视机的荧光屏就是近似于这样的漫散射面，所以从各个方向上观看图像，都有相同的亮度感。以下是部分光源的亮度值：单位cd/m²太阳：1.5*10 ；日光灯：（510）*10³；月光（满月）：2.5*10³；黑白电视机荧光屏：120左右；彩色电视机荧光屏：80左右。3. 光通量与流明光源所发出的光能是向所有方向辐射的，对于在单位时间里通过某一面积的光能，称为通过这一面积的辐射能通量。各色光的频率不同，眼睛对各色光的敏感度也有所不同，即使各色光的辐射能通量相等，在视觉上并不能产生相同的明亮程度，在各色光中，黄、绿色光能激起最大的明亮感觉。如果用绿色光作水准，令它的光通量等于辐射能通量，则对其它色光来说，激起明亮感觉的本领比绿色光为小，光通量也小于辐射能通量。光通量的单位是流明，是英文lumen的音译，简写为lm。绝对黑体在铂的凝固温度下，从5.305*10³cm²面积上辐射出来的光通量为1lm。为表明光强和光通量的关系，发光强度为1坎德拉的点光源在单位立体角（1球面度）内发出的光通量为1流明。一只40W的日光灯输出的光通量大约是2100流明。4. 光照度与勒克斯光照度可用照度计直接测量。光照度的单位是勒克斯，是英文lux的音译，也可写为lx。被光均匀照射的物体，在1平方米面积上得到的光通量是1流明时，它的照度是1勒克斯。有时为了充分利用光源，常在光源上附加一个反射装置，使得某些方向能够得到比较多的光通量，以增加这一被照面上的照度。例如汽车前灯、手电筒、摄影灯等。以下是各种环境照度值：单位lux黑夜：0.0010.02；月夜：0.020.3；阴天室内：550；阴天室外：50500；晴天室内：1001000；夏季中午太阳光下的照度：约为10*6次方；阅读书刊时所需的照度：5060；家用摄像机标准照度：1400相关知识：背景 1967年法国第十三届国际计量大会规定了以 坎德拉、坎德拉/平方米、流明、勒克斯分别作为发光强度、光亮度、光通量和光照度等的单位，为统一工程技术中使用的光学度量单位有重要意义。为使您了解和使用便利，以下将有关知识做一简单介绍：1.candela的定义1. 烛光、国际烛光、坎德拉（candela）的定义 在每平方米101325牛顿的标准大气压下，面积等于1/60平方厘米的绝对“黑体”（即能够吸收全部外来光线而毫无反射的理想物体），在纯铂（Pt）凝固温度（约2042K获1769）时，沿垂直方向的发光强度为1 坎德拉。并且，烛光、国际烛光、坎德拉 三个概念是有区别的，不宜等同。从数量上看，60 坎德拉等于58.8国际烛光，亥夫纳灯的1烛光等于0.885国际烛光或0.919坎德拉。2. 发光强度与光亮度发光强度简称光强，国际单位是candela（坎德拉）简写cd。Lcd是指光源在指定方向的单位立体角内发出的光通量。光源辐射是均匀时，则光强为I=F/，为立体角，单位为球面度（sr）,F为光通量，单位是流明，对于点光源由I=F/4 。光亮度是表示发光面明亮程度的，指发光表面在指定方向的发光强度与垂直且指定方向的发光面的面积之比，单位是坎德拉/平方米。对于一个漫散射面，尽管各个方向的光强和光通量不同，但各个方向的亮度都是相等的。电视机的荧光屏就是近似于这样的漫散射面，所以从各个方向上观看图像，都有相同的亮度感。以下是部分光源的亮度值：单位cd/m²太阳：1.5*10 ；日光灯：（510）*10³；月光（满月）：2.5*10³；黑白电视机荧光屏：120左右；彩色电视机荧光屏：80左右。3. 光通量与流明光源所发出的光能是向所有方向辐射的，对于在单位时间里通过某一面积的光能，称为通过这一面积的辐射能通量。各色光的频率不同，眼睛对各色光的敏感度也有所不同，即使各色光的辐射能通量相等，在视觉上并不能产生相同的明亮程度，在各色光中，黄、绿色光能激起最大的明亮感觉。如果用绿色光作水准，令它的光通量等于辐射能通量，则对其它色光来说，激起明亮感觉的本领比绿色光为小，光通量也小于辐射能通量。光通量的单位是流明，是英文lumen的音译，简写为lm。绝对黑体在铂的凝固温度下，从5.305*10³cm²面积上辐射出来的光通量为1lm。为表明光强和光通量的关系，发光强度为1坎德拉的点光源在单位立体角（1球面度）内发出的光通量为1流明。一只40W的日光灯输出的光通量大约是2100流明。4. 光照度与勒克斯光照度可用照度计直接测量。光照度的单位是勒克斯，是英文lux的音译，也可写为lx。被光均匀照射的物体，在1平方米面积上得到的光通量是1流明时，它的照度是1勒克斯。有时为了充分利用光源，常在光源上附加一个反射装置，使得某些方向能够得到比较多的光通量，以增加这一被照面上的照度。例如汽车前灯、手电筒、摄影灯等。以下是各种环境照度值：单位lux黑夜：0.0010.02；月夜：0.020.3；阴天室内：550；阴天室外：50500；晴天室内：1001000；夏季中午太阳光下的照度：约为10*6次方；阅读书刊时所需的照度：5060；家用摄像机标准照度：1400Digital light intensity detection module: GY - 30 USES ROHM original BH1750FVI chip power supply: 3-5 v light range: 0-65535 lx sensor built-in direct digital output 16 bitad converter, omit complex calculations, omit the calibration does not distinguish between environmental light source close to the visual acuity of the spectral characteristics of a wide range of brightness for high precision determination of the 1 lux standard NXP IIC communication protocol level conversion module contains internal communication, direct connection with 5 v microcontroller IO send 51 C language test on STC code to send AVR M16 C language test code related background knowledge In 1967 France 13th. International conference on measurement stipulated by candela, candela per square metre, lumens, lux respectively as the luminous intensity, brightness, light and luminous flux unit, for unification engineering technology used in the optical unit of measure has important significance. To make you understand and use convenient, the relevant knowledge to do a simple introduction: 1. The definition of candela 1. Candlelight, international candle, candle (candela) in the definition of every square metre 101325 Newton, under normal atmospheric pressure is equal to 1/60 square centimeter of absolute black body (that is, to absorb all the external light) and there is no reflection of the ideal object, in the pure platinum (Pt) solidification temperature 2042 (2042 k), along the vertical direction of the luminous intensity is 1 candela. And, candle, international candle, candle there is a difference between three concepts, should not be equal. Look from the number, 60 candela is equal to 58.8 international candlelight, hefner lamp 1 candle is equal to 0.885 international candlelight or 0.919 candela. 2. The luminous intensity and brightness The luminous intensity or intensity, the international unit is candela (CD (candela). Lcd is refers to the light source in the specified direction of the luminous flux emitted per unit solid Angle. Light radiation is uniform, the light intensity for I = F/, for solid Angle, unit for steradian (sr), F as the luminous flux, unit is the lumen, for point source of light by I = F / 4. Brightness is to express the degree of shiny surface bright, refers to the surface in the direction of the luminous intensity and vertical and specify the ratio of the direction of the light-emitting surface area, the unit is candela per square meter. For a diffuse scattering surface, although different luminous intensity and luminous flux in all directions, but the brightness of all directions are equal. The TV screen is similar to the diffuse scattering surface, so images from all directions, all have the same brightness. Here are some of the light source brightness values: CD/m&sup 2; The sun: 1.5 * 10; Fluorescent lamp: (5-10 * 10 & sup3; ; Moonlight (full moon) : 2.5 * 10 & sup3; ; Black and white television screen: 120; Color TV screen: around 80. 3. Luminous flux and lumen light source the light is made by radiation in all directions, for in unit time through a certain area of light energy, called the radiant energy flux through this area. Frequency of each light is different, the sensitivity of the eyes to the light is also different, even if all the colours of the radiant energy flux is equal, on the vision does not produce the same bright degree, in various colours, yellow, green light has the biggest bright feeling. If the level with green light, make its luminous flux is equal to the radiant energy flux, for other colours, provoked a bright feeling ability than the green light for the small, luminous flux is smaller than the radiant energy flux. Flux is the unit of lumen, it is the transliteration of English lumen, abbreviated to lm. Absolute black body under the freezing temperature of platinum, from 5.305 * 10 & sup3; Cm&sup 2; Radiate area of the luminous flux of 1 lm. To show a relationship between intensity and luminous flux, luminous intensity is 1 candela point source in the unit solid Angle steradian (1) the luminous flux emitted to 1 lumen. A 40 w fluorescent lamp output flux is about 2100 lumens. 4. Light with the light lux available luxmeter direct measurement. Light is the unit of the lux, it is the transliteration of English lux, can also be written as lx. Uniform irradiation by the light of the object, get the luminous flux is 1 on 1 square meter area of the lumen, it is 1 lux. Sometimes in order to make full use of the light source, often attach a reflection on the light source device, make some direction can get more luminous flux, in order to increase this by the intensity of illumination on the cliff. For example, car headlights, flashlights, photography lights, etc. Here are all kinds of environment illuminance values: unit lux night: 0.001-0.02; Moon: 0.02-0.3; Cloudy day indoor: 5 to 50; Its cloudy outside: 50-500; Sunny days indoor: 100-1000; Summer at noon the sun illumination: * 6 of about 10 square; Reading books when the intensity of illumination: 50-60; Home video standard illumination: 1400 Knowledge: background In 1967 France 13th. International conference on measurement stipulated by candela, candela per square metre, lumens, lux respectively as the luminous intensity, brightness, light and luminous flux unit, for unification engineering technology used in the optical unit of measure has important significance. To make you understand and use convenient, the relevant knowledge to do a simple introduction: 1. The definition of candela 1. The candlelight, international candle, candle (candela) definition In every square metre 101325 Newton, under normal atmospheric pressure is equal to 1/60 square centimeter of absolute black body (that is, to absorb all the external light) and there is no reflection of the ideal object, in the pure platinum (Pt) solidification temperature 2042 (2042 k), along the vertical direction of the luminous intensity is 1 candela. And, candle, international candle, candle there is a difference between three concepts, should not be equal. Look from the number, 60 candela is equal to 58.8 international candlelight, hefner lamp 1 candle is equal to 0.885 international candlelight or 0.919 candela. 2. The luminous intensity and brightness The luminous intensity or intensity, the international unit is candela (CD (candela). Lcd is refers to the light source in the specified direction of the luminous flux emitted per unit solid Angle. Light radiation is uniform, the light intensity for I = F/, for solid Angle, unit for steradian (sr), F as the luminous flux, unit is the lumen, for point source of light by I = F / 4. Brightness is to express the degree of shiny surface bright, refers to the surface in the direction of the luminous intensity and vertical and specify the ratio of the direction of the light-emitting surface area, the unit is candela per square meter. For a diffuse scattering surface, although different luminous intensity and luminous flux in all directions, but the brightness of all directions are equal. The TV screen is similar to the diffuse scattering surface, so images from all directions, all have the same brightness. Here are some of the light source brightness values: CD/m&sup 2; The sun: 1.5 * 10; Fluorescent lamp: (5-10 * 10 & sup3; ; Moonlight (full moon) : 2.5 * 10 & sup3; ; Black and white television screen: 120; Color TV screen: around 80. 3. The luminous flux and lumen Light is emitted from light radiating in all directions, for in unit time through a certain area of light energy, called the radiant energy flux through this area. Frequency of each light is different, the sensitivity of the eyes to the light is also different, even if all the colours of the radiant energy flux is equal, on the vision does not produce the same bright degree, in various colours, yellow, green light has the biggest bright feeling. If the level with green light, make its luminous flux is equal to the radiant energy flux, for other colours, provoked a bright feeling ability than the green light for the small, luminous flux is smaller than the radiant energy flux. Flux is the unit of lumen, it is the transliteration of English lumen, abbreviated to lm. Absolute black body under the freezing temperature of platinum, from 5.305