一种基于电阻传感的手持可食果皮硬度自动测量装置——以桃子为例

IF 1.4 4区 农林科学 Q3 AGRICULTURAL ENGINEERING Transactions of the ASABE Pub Date : 2021-01-01 DOI:10.13031/trans.14656
Dachen Wang, Zhe Feng, Di Cui
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引用次数: 0

摘要

HighlightsA手持式水果硬度自动现场测量装置。该原型装置取得了比典型的商用穿透仪更好的性能。两个常用的硬度相关参数可以根据原型读数进行预测。基于原型读数的三维模型,可以可视化硬度的分布和变化。硬度是果实品质的重要指标。现场水果硬度测量设备需要便携、低成本、轻便、可靠和灵活。现有的便携式设备可以提供与硬度相关的参数,但它们的测量结果不能相互转换。由于人工测量过程,其测量结果也容易受到操作人员误差的影响。为解决这一问题,研制了一种基于水果阻力传感的手持样机,实现了可食用果皮水果的现场硬度自动测量,并提供了常用的硬度相关参数。通过分析四种邵氏硬度块测量结果的重复性和再现性,验证了样机的精度。同一操作人员测量结果的相对标准偏差(rsd)均小于0.61%,不同操作人员测量结果之间无显著差异(p < 0.05),说明该样机能够提供可靠的测量结果。以桃子为研究对象,结果表明:(1)样机的测力性能优于商用测力仪;(2)基于纹理分析仪与样机测力值之间的回归模型(最大力值R2P = 0.908, RMSEP = 4.191 N),可以预测两个常用的硬度相关参数;R2P = 0.923, RMSEP = 1.613 N mm-1(初始坡度),(3)桃子生长过程中原型读数的变化与生长特征相对应,(4)基于原型读数的三维模型可以可视化桃子硬度随时间的分布和变化。关键词:自动,果实紧实,手持装置,高精度,桃子。
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An Automatic Handheld Device for Firmness Measurement of Fruit with Edible Peel Based on Resistance Sensing: A Case Study of Peaches
HighlightsA handheld device was developed for automatic on-site measurement of fruit firmness.The prototype device achieved better performance than a typical commercial penetrometer.Two commonly used firmness-related parameters could be predicted based on the prototype readings.The distribution and changes of firmness could be visualized based on 3D models of the prototype readings.Abstract. Firmness is an important indicator of fruit quality. The devices for on-site fruit firmness measurement need to be portable, low-cost, lightweight, reliable, and flexible. Existing portable devices can provide firmness-related parameters, but their measurement results cannot be converted to each other. Their measurement results are also susceptible to operator error due to the manual measurement process. To solve this problem, a prototype handheld device was developed based on sensing fruit resistance to achieve automatic on-site firmness measurement of fruit with edible peel and provide commonly used firmness-related parameters. The prototype’s precision was verified by analyzing the repeatability and reproducibility of the measurement results with four Shore hardness blocks. The relative standard deviations (RSDs) of the results obtained by the same operator were less than 0.61%, and there was no significant difference among the results obtained by different operators (p < 0.05), which indicated that the prototype could provide reliable measurement results. A case study of peaches was performed, and the results showed that (1) the prototype had better performance than a commercial penetrometer, (2) two commonly used firmness-related parameters could be predicted based on regression models between a texture analyzer and the prototype readings (R2P = 0.908 and RMSEP = 4.191 N for maximum force; R2P = 0.923 and RMSEP = 1.613 N mm-1 for initial slope), (3) changes in the prototype readings for peaches during growth corresponded with the growth characteristics, and (4) the distribution and changes of peach firmness over time could be visualized based on 3D models of the prototype readings. Keywords: Automatic, Fruit firmness, Handheld device, High precision, Peach.
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来源期刊
Transactions of the ASABE
Transactions of the ASABE AGRICULTURAL ENGINEERING-
CiteScore
2.30
自引率
0.00%
发文量
0
审稿时长
6 months
期刊介绍: This peer-reviewed journal publishes research that advances the engineering of agricultural, food, and biological systems. Submissions must include original data, analysis or design, or synthesis of existing information; research information for the improvement of education, design, construction, or manufacturing practice; or significant and convincing evidence that confirms and strengthens the findings of others or that revises ideas or challenges accepted theory.
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