颜色检测系统及其在果蔬干燥中的应用

设计了一种基于TCS230颜色传感器和LabVIEW的颜色检测系统.并依次利用白平衡、矩阵校正对传感器输出信号进行处理,最终得到CIE L*a*b*色度值.将此颜色检测系统应用于胡萝卜不同干燥方式下的颜色检测,得出结论:热泵干燥比热风干燥对物料色泽的影响较小,温度设置越高,色泽退化越严重.     

基于TCS230传感器的颜色检测系统

为了提高传统颜色传感器颜色识别的效果与速度,减少识别误差,简化电路,将美国TAOS公司的TCS230高分辨率可编程颜色传感器与单片机89C2051相结合,设计了一种新型颜色检测系统,给出了该检测系统的硬件设计电路及颜色识别测试流程.该系统的精度可达10位以上,响应频率2～500 kHz,具有可编程、采用数字信号输出、抗干扰能力强等特性,在光强检测控制领域得到广泛应用.     

采用TCS230颜色传感器的测温方法及实验研究

分析了颜色传感器TCS230的测量机理,推导和分析了基于三基色的温度测量模型;分析了系统测温误差的原因,同时给出了系统的校正方法与标定方法.实验证明,系统具有较高的计算精度和实用性.     

平版表格印刷中的免配页自动打码控制系统

介绍了平版表格印刷技术中免配页自动打码控制系统的硬件和软件系统结构。重点分析了该系统面临的问题及其解决方法。对颜色传感器TCS230在系统中的使用方法作了详细介绍。     

基于孟塞尔系统岩石颜色定量分析研究

基于岩石颜色描述特点,阐述颜色测量的基本原理、相关色度学内容及石油地质岩石颜色标准。以TCS230颜色传感器为基础,选用C照明体提供标准照明光源,及CY7C68013A为主控芯片的单片机设计控制器系统;采用漫反射积分球为几何观测条件,进行光电积分式测量和光电信号转换获取颜色信息;对RGB色彩空间与孟塞尔颜色系统进行转换后,将色样投影到RGB色彩空间上得到近似均匀划分的mRGB色彩空间;最终得到按照石油地质岩石颜色标准输出的颜色定量测量系统。实现了岩石颜色从定性到半定量分析,精确的颜色描述可以反映主要矿物类型和沉积环境,对野外地质工作具有重要的指导意义。     

双智能小车设计

设计一款双智能小车.采用AT89S52单片机为控制中心,L298N控制电机转动,红外传感器RPR220识别跑道,颜色传感器TCS230识别路灯颜色,光反射式接近开关方法测量智能小车运动过程中的距离.电路结构简单,设计比较容易实现.     

基于双颜色传感器的真菌霉素快速检测方法

针对生物学检测真菌霉素的过程比较复杂、成本高、不易操作等问题,提出了一种利用真菌霉素类物质溶液颜色直接测量溶液浓度的快速检测方法,设计了一个双颜色传感器检测系统.通过颜色传感器测得溶液颜色信息来快速确定被检测物质的质量分数并实现颜色信息采集过程中的动态白平衡,使颜色检测对环境光的变化具有自适应性.最后建立样品溶液颜色的三原色（RGB）值与浓度之间的线性关系.实验结果表明,样品数据的相对标准偏差（RSD）低于5%,利用该快速检测方法建立的线性关系计算得到的溶液浓度与样品实际浓度的相对误差（RE）低于7%,满足实验室精密度和准确度的要求.同时,与传统检测方法相比,该方法快速、方便,并降低了检测成本.      

基于颜色检测的亚硝酸盐传感器设计

针对水资源中亚硝酸含量自动连续在线检测系统的经济适用性、准确性和便携性要求,基于比色法原理,提出一种非接触式的液相溶解亚硝酸盐浓度检测方法。通过颜色检测设备对反应后溶液颜色进行识别,建立检测信号和亚硝酸盐浓度之间的回归方程。实验结果表明：在5~30℃的环境下,该传感器具有良好的稳定性,测定系数R²为0.998 9,相对误差的最大值为5.12%,相对标准偏差的最大值为6.77%;水中亚硝酸盐检测传感器所测数据与商用传感器检测数据的最大相对误差为2.76%。该传感器成本低、结构简单、响应时间短,适用于低浓度亚硝酸盐的快速检测。     

数字化色标传感器的设计

在现代化工业生产中，颜色传感器的应用日益广泛。本就颜色传感器的原理进行了综合的分析，同时提出了一种鉴别速度较快的数字化色标传感器的设计方法。     

基于信任度的多传感器数据融合及其应用

针对多传感器信息采集系统中的数据不确定性问题,提出了一种基于信任度的多传感器数据融合方法.该方法首先定义一个模糊型指数信任度函数,对两传感器测得数据间的信任程度进行量化处理,并通过信任度矩阵度量各传感器测得数据的综合信任程度,以合理地分配测得数据在融合过程中所占权重,得到数据融合估计的最终表达式,从而实现了多传感器数据的融合.分析土壤含水率的数据融合结果可知,应用所提出方法使融合结果的标准差降低至0.0084,随机干扰下变化幅度仅为0.0027%,不仅达到了比传统方法更高的融合精度,而且具有良好的抗干扰性.     

Preliminary study on the orbit cross-calibration of CMODIS by Sea WiFS

China launched its third spaceship SZ-3 in March, 2002 on which the main remote sensor is the Chinese moderate imaging spectra radiometer (CMODIS). In this paper the properties of CMODIS are firstly introduced briefly. Then, the theory and algorithm of cross-calibration for CMODIS ocean color channels by the sea-viewing wide field-of-view sensor (SeaWiFS) data are discussed in detail. The total radiance (TOA) of four quasi-synchronized crossing ocean areas simulated by SeaWiFS and measured by CMODIS are compared and the calibration coefficients are derived from the relationship between them. Finally, the in-situ water leaving radiance data are used to validate the calibration results. The results show that the cross-calibration method could provide reasonable precision for ocean color measurement.     

Preliminary study on the orbit cross-calibration of CMODIS by SeaWiFS

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Membrane Insertion by Trichosanthin Using the Monolayer Method

A monolayer technique was used to investigate the interaction between the ribosome inactivating protein trichosanthin (TCS) and phospholipid membrane. The adsorption experiments show that the negatively charged 1,2-dipalmitoyl-sn-glycerol-3-phosphoglycerol (DPPG) causes obvious enrichment of TCS beneath the monolayer, indicating electrostatic attraction between TCS and the negatively charged phospholipid. When TCS was incorporated into the DPPG monolayer at low pH, it could not be completely squeezed out until the monolayer collapsed. The results suggest that the electrostatic attraction and the hydrophobic force are involved in the interaction between TCS and phospholipids at different stages. These findings may be correlated with the membrane translocation mechanism of TCS.     

Trichosanthin can spontaneously penetrate phospholipid monolayer under acid condition

Tianhuafen is a kind of traditional Chinese medicine for abortion, which has long been used in China. The basic protein trichosanthin (TCS) is responsible for such activity. As a ribosome inactivating protein (RIP), trichosanthin removes A4304 in the 28s rRNA via the N-glycosidase activity and inactivates the ribosome. However, it remains unclear how TCS can enter the cytoplasm. In the experiment, monolayers at air/water interface have been used to study the interaction between TCS and phospholipid membrane. The results show that TCS can penetrate negatively charged phospholipid monolayer under acid condition, and its membrane penetrating ability is obviously pH-dependent. A hypothesis of TCS penetrating biological membrane under acid condition is proposed based on the obtained result.     

数码照片的噪点与降噪方法

数码相机拍摄的照片,都不可避免地存在着噪点．噪点严重时破坏色彩和影调,造成照片像质下降,美感受损．通过对数码相机中噪点产生的原因：感光度设置,影像传感器的尺寸等的分析,用可行的方法控制噪点,再加后期用软件,如Photoshop,Neat Image等进行降噪处理,可使数码照片更具表现力．