Fruit and vegetable compactness measuring device and method

Abstract

The invention discloses a fruit and vegetable compactness measuring device and method. The fruit and vegetable compactness measuring device includes a machine frame, tensioning belts, stepping motorsand a controller. The machine frame includes a platform, a horizontal suspension rod, a left vertical supporting rod and a right vertical supporting rod; the stepping motors are symmetrically placed on the left side and the right side of the platform, the vertical supporting rods are provided with rulers, and the horizontal suspension rod is sequentially provided with a left fixed pulley, a left movable pulley, a center top rod, a right movable pulley and a right fixed pulley; the left fixed pulley and the right fixed pulley are correspondingly located right above the corresponding stepping motors; the center top rod is provided with a pressure sensor; one ends of the tensioning belts are connected with the stepping motors, the other ends of the tensioning belts are connected with an arc belt after penetrating through the pulleys, and the arc belt is used for supporting tested fruits and vegetables; the tensioning belts are provided with tension sensors; and the controller is used forcontrolling the stepping motors, the tension sensors and the pressure sensor. According to the fruit and vegetable compactness measuring device and method, a method of synchronous loading on the two sides is adopted to measure the deformation of the fruits and vegetables within a given elastic deformation amount, the structure is simple, the operation is convenient, and the fruit and vegetable compactness measuring device and method can be used for accurately measuring the compactness of different fruits and vegetables.

Description

technical field [0001] The invention belongs to the technical field of agricultural production, and in particular relates to a device and method for measuring the firmness of fruits and vegetables. Background technique [0002] Fruit and vegetable firmness is an index used to measure and evaluate the physical compression effect of spherical (or ball) fruits and vegetables. It measures the internal compression resistance of fruits and vegetables and is related to the texture of fruits and vegetables. It can be used to evaluate the internal quality and maturity of fruits and vegetables. The traditional method of measuring the firmness of fruits and vegetables mostly uses the method of holding fruits and vegetables for qualitative evaluation, which is highly subjective; at present, the measurement of firmness of fruits and vegetables mainly uses instruments such as texture analyzers and hardness testers to penetrate into the interior of fruits and vegetables to measure single or...

AI Technical Summary

Problems solved by technology

The above-mentioned patents are measured by horizontal unidirectional tensile loading. The uneven force on the two ends of the measured fruits and vegetables and the belt will easily lead to side slip and tilt, resulting in inaccurate measurement results, and the direct use of tensile force to measure the compactness ignores the bandwidth. Effects on Heading Fruits and Vegetables of Different Sizes

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