果蔬品质手持式近红外光谱检测系统设计与试验
为满足果蔬加工过程快速检测和质量控制的实际需求,研发近红外光谱技术的低成本、实用化、小型化的果蔬品质手持式检测系统。在分析当前近红外光谱实用化过程的瓶颈问题的基础上,提出果蔬品质的手持式检测系统设计方案,阐述了硬件系统选择和软件系统构建,介绍了检测系统的工作原理;选用近红外微机电系统的数字微镜器件作为分光元件,以单点探测器获取检测信息,从而实现光谱检测系统的微型化设计和系统成本的显著降低。以检测番茄为例,利用设计的手持式检测系统,获取番茄900-1 700 nm范围的近红外光谱,利用先选择特征波段再优选波长的建模策略,分别建立了番茄中番茄红素和可溶性固形物含量的定量检测模型;可溶性固形物含量模...
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| Published in | 农业工程学报 Vol. 33; no. 8; pp. 245 - 250 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
国家农业智能装备工程技术研究中心,北京 100097%江苏大学食品与生物工程学院,镇江,212013%国家农业智能装备工程技术研究中心,北京,100097
2017
江苏大学食品与生物工程学院,镇江 212013 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1002-6819 |
| DOI | 10.11975/j.issn.1002-6819.2017.08.033 |
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| Abstract | 为满足果蔬加工过程快速检测和质量控制的实际需求,研发近红外光谱技术的低成本、实用化、小型化的果蔬品质手持式检测系统。在分析当前近红外光谱实用化过程的瓶颈问题的基础上,提出果蔬品质的手持式检测系统设计方案,阐述了硬件系统选择和软件系统构建,介绍了检测系统的工作原理;选用近红外微机电系统的数字微镜器件作为分光元件,以单点探测器获取检测信息,从而实现光谱检测系统的微型化设计和系统成本的显著降低。以检测番茄为例,利用设计的手持式检测系统,获取番茄900-1 700 nm范围的近红外光谱,利用先选择特征波段再优选波长的建模策略,分别建立了番茄中番茄红素和可溶性固形物含量的定量检测模型;可溶性固形物含量模型的预测相关系数和预测均方根误差分别为0.899和0.133%;番茄红素模型的预测相关系数和预测均方根误差分别为0.886和2.508 mg/kg。研究表明该系统能够满足果蔬品质的快速无损检测要求,可为实用化、小型化的手持式光谱检测仪设计和开发提供参考。 |
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| AbstractList | TP274.4%O433.4; 为满足果蔬加工过程快速检测和质量控制的实际需求,研发近红外光谱技术的低成本、实用化、小型化的果蔬品质手持式检测系统.在分析当前近红外光谱实用化过程的瓶颈问题的基础上,提出果蔬品质的手持式检测系统设计方案,阐述了硬件系统选择和软件系统构建,介绍了检测系统的工作原理;选用近红外微机电系统的数字微镜器件作为分光元件,以单点探测器获取检测信息,从而实现光谱检测系统的微型化设计和系统成本的显著降低.以检测番茄为例,利用设计的手持式检测系统,获取番茄900~1700 nm范围的近红外光谱,利用先选择特征波段再优选波长的建模策略,分别建立了番茄中番茄红素和可溶性固形物含量的定量检测模型;可溶性固形物含量模型的预测相关系数和预测均方根误差分别为0.899和0.133%;番茄红素模型的预测相关系数和预测均方根误差分别为0.886和2.508 mg/kg.研究表明该系统能够满足果蔬品质的快速无损检测要求,可为实用化、小型化的手持式光谱检测仪设计和开发提供参考. 为满足果蔬加工过程快速检测和质量控制的实际需求,研发近红外光谱技术的低成本、实用化、小型化的果蔬品质手持式检测系统。在分析当前近红外光谱实用化过程的瓶颈问题的基础上,提出果蔬品质的手持式检测系统设计方案,阐述了硬件系统选择和软件系统构建,介绍了检测系统的工作原理;选用近红外微机电系统的数字微镜器件作为分光元件,以单点探测器获取检测信息,从而实现光谱检测系统的微型化设计和系统成本的显著降低。以检测番茄为例,利用设计的手持式检测系统,获取番茄900-1 700 nm范围的近红外光谱,利用先选择特征波段再优选波长的建模策略,分别建立了番茄中番茄红素和可溶性固形物含量的定量检测模型;可溶性固形物含量模型的预测相关系数和预测均方根误差分别为0.899和0.133%;番茄红素模型的预测相关系数和预测均方根误差分别为0.886和2.508 mg/kg。研究表明该系统能够满足果蔬品质的快速无损检测要求,可为实用化、小型化的手持式光谱检测仪设计和开发提供参考。 |
| Abstract_FL | Determination of internal quality of fruit and vegetable with a suitable technique is crucial for processing detection and quality control. While substantial progress has recently been made in the miniaturization of near-infrared (NIR) spectrometers, there remains continued interest from end-users and product developers in pushing the technology envelope toward even smaller and lower cost analyzers. The potential of these instruments to revolutionize on-site applications can be realized only if the reduction in size does not compromise performance of the spectrometer beyond the practical need of a given application. In this paper, the working principle of a novel, extremely miniaturized NIR spectrometer is presented. The ultra-compact spectrometer relies on digital micromirror device (DMD) technology for the light dispersing element. DMD is a two-dimensional array of electro-mechanical mirror elements whose surface normal angles can be controlled. Digitally programmable DMD can set the spectral resolution and wavelength range according to user needs, adjust the integration time, and adapt the luminous flux. The system design with DMD and single-pixel InGaAs detector can significantly reduce the cost, and meanwhile ensure the detect precision. The DLP (digital light procession) NIRscan module is used as spectrometer optical engine in the miniaturized system. In the specific implementation, a sample is placed against the sapphire front window of the reflectance head. During a scan, the sample absorbs a specific amount of NIR light and diffusely reflects the non-absorbed light into the system. The illuminating lamps are designated as lens-end lamps because the front end of the glass bulb is formed into a lens that directs more lights from the filament to the sample test region. The collection lens gathers collimated light from a 2.5 mm diameter region at the sample window. The handheld system supports the following modes of operation: USB (Universal Serial Bus) connection and Bluetooth for 2 communication channels. Special analyzer software was developed for quality inspection based on multithread programming technology. The advantages of this software are presented by the process of modular design, including software system initialization, information communication, information interaction, spectral data acquisition and processing, spectral curve real-time display, quality index calculation, and statistics and save of detection results. Miniaturized handheld NIR spectrometer was developed and used to acquire reflectance spectra from fruit and vegetable samples in the wavelength range of 900-1700 nm. In order to verify the design and performance, tomato was selected as research object. A total of 78 tomato samples were randomly divided into 2 subsets. The first subset was called the calibration set with 52 samples and used for building model, while the other one was called the prediction set with 26 samples and used for testing the robustness of the model. In the process of model establishment, a simplified strategy was proposed. Firstly, characteristic spectrum bands were selected to remove the uninformative variable and the low-correlation band. And then feature wavelengths were optimized to eliminate the collinearity relationship in the spectral data. Finally, simplified model was built, which had good robustness and stability. Synergy internal partial least square (siPLS) and successive projections algorithm (SPA) were sequentially applied to calibrate models. The siPLS was applied to select an optimized spectral interval and an optimized combination of spectral regions selected from informative regions in model calibration. The subsequent application of SPA to this reduced domain could lead to an efficient and refined model. The measurement results of the final model were achieved as follows: correlation coefficient (Rp) was 0.899 and root mean square error of prediction (RMSEP) was 0.133% for soluble solid content in tomato, andRp was 0.886 and RMSEP was 2.508 mg/kg for lycopene content in tomato. The results will provide the method reference for rapid, non-destructive, and on-site detection technology and equipment of fruit internal quality. |
| Author | 郭志明 陈全胜 张彬 王庆艳 欧阳琴 赵杰文 |
| AuthorAffiliation | 江苏大学食品与生物工程学院,镇江212013 国家农业智能装备工程技术研究中心,北京100097 |
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| Author_FL | Wang Qingyan Chen Quansheng Guo Zhiming Zhao Jiewen Zhang Bin Ouyang Qin |
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| Keywords | 果蔬品质 nondestructive detection 近红外光谱 农产品 agriculture products digital micromirror device spectrum analysis 数字微镜器件 手持式检测系统 光谱分析 fruit and vegetable quality near infrared spectroscopy 无损检测 handheld detection system |
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| Notes | 11-2047/S Guo Zhiming1,2, Chen Quansheng1, Zhang Bin1, Wang Qingyan2, Ouyang Qin1, Zhao Jiewen1 （1. School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; 2. National Engineering Research Center of Intelligent Equipment for Agriculture, Beijing 100097, China） nondestructive detection; spectrum analysis; agriculture products; near infrared spectroscopy; handheld detection system; digital micromirror device; fruit and vegetable quality Determination of internal quality of fruit and vegetable with a suitable technique is crucial for processing detection and quality control. While substantial progress has recently been made in the miniaturization of near-infrared （NIR） spectrometers, there remains continued interest from end-users and product developers in pushing the technology envelope toward even smaller and lower cost analyzers. The potential of these instruments to revolutionize on-site applications can be realized only if the reduction in size does not compromise performance of |
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| Publisher | 国家农业智能装备工程技术研究中心,北京 100097%江苏大学食品与生物工程学院,镇江,212013%国家农业智能装备工程技术研究中心,北京,100097 江苏大学食品与生物工程学院,镇江 212013 |
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| Snippet | 为满足果蔬加工过程快速检测和质量控制的实际需求,研发近红外光谱技术的低成本、实用化、小型化的果蔬品质手持式检测系统。在分析当前近红外光谱实用化过程的瓶颈问题的基础... TP274.4%O433.4; 为满足果蔬加工过程快速检测和质量控制的实际需求,研发近红外光谱技术的低成本、实用化、小型化的果蔬品质手持式检测系统.在分析当前近红外光谱实用化过程... |
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| SubjectTerms | 光谱分析 农产品 手持式检测系统 数字微镜器件 无损检测 果蔬品质 近红外光谱 |
| Title | 果蔬品质手持式近红外光谱检测系统设计与试验 |
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