日本高灌蓝莓采收最适线锯振动速度（摘选）

高灌蓝莓的成熟期不一致,在3～4周时间内需要有选择地采收3～5次。现在日本的蓝莓收获方式是采用一种具有5个速度调节挡的18mm线锯对树枝进行变速振动。为了能够找到采收效率最高且采收效果最好的振动速度,利用高速摄像机对蓝莓采收过程进行记录。之后利用数据统计,回放分析采收过程中的细节,以确定最佳振动速度和振动时间。通过对5种速度的分析,发现Ⅱ挡即频率为1670次min,在果枝周围振动2s是采收的最佳方式。在这种条件下,与3个高速挡同样可以分离87%成熟的蓝莓。同时仅分离了24%未成熟的蓝莓,该结果与Ⅰ挡无显著差异。

Optimal Vibrating Speed of Jigsaw for Harvesting High-Bush Blueberries in Japan(Extracts)

High-bush blueberry does not mature all fruits at once,so it needs to be selectively harvested 3-5 times over 3-4 weeks.The new developed blueberry harvesting method employs a jigsaw,which has five dials for speed changing with a fixed stroke 18 mm,to vibrate branches for separating blueberries in Japan.In order to find out the optimal speed(dial)that can remove more ripe blueberries while less unripe blueberries efficiently,a high-speed camera was applied to record harvesting process of blueberries.Then,details of the process were collected by replaying recorded videos.After that,the optimal vibrating speed and vibrating time was determined with statistical analysis.By analyzing the five speeds,dial 2 with the speed of 1670 cpm was chosen as the optimal speed of jigsaw to vibrate each branch around 2 seconds.In that condition,it separated 87% ripe blueberries which is the same to the three high-speed dials,but only removed 24% unripe blueberries that is not significantly different from dial 1.