Portable fruit hardness detecting instrument

Abstract

The invention discloses a portable fruit hardness detecting instrument. An outer sleeve is arranged outside an inner sleeve. A spring stop block is fixedly connected to the bottom of the inner sleeve.Two circumferential grooves are formed in the outer sleeve; a first annular step surface and a second annular step surface are formed between the upper circumferential groove and the inner wall of the top of the outer sleeve and between the lower circumferential groove and the inner wall of the top of the outer sleeve respectively. A force applying spring is arranged between the first annular step surface and the spring stop block. When the outer sleeve moves down, the step is stopped and limited by the spring stop block. A pressure sensor is installed in the middle of the inner sleeve and isconnected with a guide rod by an elastic component; and the guide rod is connected with a probe fixedly. A first piezoelectric film is arranged at the spring stop block; and a second piezoelectric film is also arranged on the spring stop block. The portable fruit hardness detecting instrument can be applied to the micro-damage or non-destructive measurement of fruit hardness as well as testing ofthe fruit pulp hardness after peeling. The measurement result is not affected by the manual pressure and loading speed and is accurate. The portable fruit hardness detecting instrument has characteristics of high portability, fast measurement speed, high detection precision, and simple operation and is suitable for the on-site measurement in occasions such as orchards and supermarkets.

Description

technical field [0001] The invention relates to a portable detection instrument, in particular to a portable fruit hardness detection instrument, which is suitable for rapid detection of fruit hardness in orchards, supermarkets and other occasions. Background technique [0002] Fruit is one of the important agricultural products. As a labor-intensive industry, the fruit industry is the third pillar industry after grain and vegetables in the planting industry. The annual output reaches hundreds of millions of tons, and it occupies a very important position in my country's national economy. Every year, 20%-30% of the fruit is wasted due to various reasons, among which the waste caused by improper picking period, long storage time, transportation damage and other reasons accounts for a large proportion. If we can provide portable instruments that can detect the ripeness of fruits in real time in orchards, supermarkets, etc., and help fruit farmers and distributors to reasonably...

AI Technical Summary

Problems solved by technology

[0010] The present invention can realize the consistency of each detection process, and can accurately detect the operation and implementation of different people, and solves the technical problem of inconsistency of measurement results caused by different interference press

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