A low-cost device for accurate and continuous measurements of fruit diameter

被引：75

作者：

Morandi, Brunella ^{[1
]}

Manfrini, Luigi ^{[1
]}

Zibordi, Marco ^{[1
]}

Noferini, Massimo ^{[1
]}

Fiori, Giovanni ^{[1
]}

Grappadelli, Luca Corelli ^{[1
]}

机构：

[1] Univ Bologna, Dipartimento Colture Arboree, I-40127 Bologna, Italy

来源：

HORTSCIENCE | 2007年 / 42卷 / 06期

关键词：

linear potentiometer; fruit gauge; fruit growth; Prunus persica;

D O I：

10.21273/HORTSCI.42.6.1380

中图分类号：

S6 [园艺];

学科分类号：

0902 ;

摘要：

This work describes a fruit gauge based on a low-cost linear potentiometer interfaced to a data-logger, which allows continuous measurement of fruit diameter. The sensor is supported by a custom-built stainless steel frame designed to be easily applied to different size fruits. Highly significant linear relationships between tension (mV) and displacement (mm) have been found during sensor calibration. The average slope of this relationship, 5.4 x 10(-3) with a standard deviation of 5 x 10(-5), was used as conversion coefficient. Temperature stability was tested by submitting both the sensor and the whole gauge to a temperature range of 5-60 degrees C. The maximum deflection found was 11 mV. Measurements performed during the three developmental stages of peach [Prunus persica (L), Batsch.] fruit showed high sensitivity of the gauge which allowed clear detection of diurnal patterns of fruit diameter changes and precise monitoring of minute variations in fruit growth rates during 24 h.

引用

页码：1380 / 1382

页数：3

共 14 条

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