Method and apparatus for assessing the ripeness or firmness...

G - Physics – 01 – N

Patent

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G01N 33/02 (2006.01) G01N 3/48 (2006.01)

Patent

CA 2283770

Apparatus for testing fruit and vegetables to assess their ripeness includes an impactor device (28) comprising a bellows (30) which can be expanded and retracted by the application of pressurised air and vacuum via a support tube (32) for the bellows and which mounts an impactor (33) for tapping a fruit or vegetable item to be tested. The impactor has an internal slug movable relatively to the bellows (30) so that. when the bellows expands and stops upon its nose piece (36) contacting the surface of the item to be tested, the slug continues to move through the aperture (35) in the nose piece. under its own momentum, to tap the surface of the item. The slug incorporates a force transducer which, when the slug is tapped against the item, produces an electrical output signal in the form of a pulse corresponding to the reaction force and this pulse is processed to produce a signal indicative of the ripeness of the fruit.

L'invention concerne un appareil permettant de soumettre des fruits et des légumes à des tests pour évaluer leur maturité. Cet appareil comprend un dispositif palpeur (28) comportant un soufflet (30) qui peut être déployé et rétracté par application d'air comprimé et par création d'un vide d'air via un tube (32) de support du soufflet, et qui est monté sur un palpeur (33) destiné à tapoter un fruit ou un légume à tester. Le palpeur comporte un noyau plongeur intérieur mobile par rapport au soufflet (30), de sorte que, lorsque le soufflet se déploie et s'arrête au moment où son embout (36) entre en contact avec la surface de l'article à tester, le noyau plongeur continue à se déplacer à travers l'ouverture (35) de l'embout, sous l'effet de son propre moment, pour tapoter la surface de l'article. Le noyau plongeur comporte un transducteur de force qui, lorsque le noyau plongeur vient taper contre l'article, produit un signal électrique de sortie sous forme d'une impulsion correspondant à la force de réaction. Cette impulsion est ensuite traitée pour produire un signal indicatif de la maturité du fruit.

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