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Machine translation
1. (WO1980002639) METHOD FOR MEASURING THE VOLUME OF SOLID BODIES AND A MEASURING AND/OR REFERENCE CHAMBER FOR PERFORMING SAID METHOD
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/002639    International Application No.:    PCT/NL1980/000020
Publication Date: 11.12.1980 International Filing Date: 05.06.1980
IPC:
A61B 5/08 (2006.01), A61B 5/103 (2006.01), G01F 17/00 (2006.01)
Applicants:
Inventors:
Priority Data:
7904400 05.06.1979 NL
Title (EN) METHOD FOR MEASURING THE VOLUME OF SOLID BODIES AND A MEASURING AND/OR REFERENCE CHAMBER FOR PERFORMING SAID METHOD
(FR) PROCEDE DE MESURE DU VOLUME DE CORPS SOLIDES ET CHAMBRE DE MESURE ET/OU DE REFERENCE POUR LA MISE EN OEUVRE DE CETTE METHODE
Abstract: front page image
(EN)Determination of the volume of solid bodies by plethysmometry: the bodies, such as human beings or animals, are brought into a measuring chamber (1) the volume of which is changed by means of a piston (8) within a cylinder (7). The change in pressure within the chamber (1) is measured and constitutes a measure of the volume of the body to be determined. The measurement may be performed with the aid of a reference chamber (5) in which the volume is also changed, i.e. by simultaneous movement of a piston (11) within a cylinder (10) together with piston (8) within cylinder (7). By comparison of pressures (by means of 17) between the chambers (1 and 5) a more accurate volume measurement is obtained than without reference chamber (5). The invention is based on the recognition that a quick change in volume is conducive also to a change in temperature and that living beings to be measured give off water vapour and heat, thus causing the measurement to be less accurate, and that this problem may be solved by filling the measuring chamber (1) and preferably also the reference chamber (5) for the major part thereof with a solid filler material (2, 6) having a plurality of interconnected cavities.
(FR)Determination du volume de corps solides par plethysmometrie: les corps, tels que des etres humains ou des animaux, sont amenes dans une chambre de mesure (1) dont on change le volume au moyen d"un piston (8) loge dans un cylindre (7). Le changement de pression dans la chambre (1) est mesure et constitue une mesure du volume du corps a determiner. La mesure peut etre effectuee a l"aide d"une chambre de reference (5) dans laquelle le volume change egalement, par mouvement simultane d"un piston (11) dans un cylindre (10) avec le piston (8) dans le cylindre (7). En comparant les pressions (au moyen de 17) entre les chambres (1 et 5), on obtient une mesure du volume plus precise que sans la chambre de reference (5). L"invention se base sur le fait qu"un rapide changement de volume conduit egalement a un changement de temperature et que les etres vivants a mesurer degagent de la vapeur d"eau et de la chaleur, ce qui rend la mesure moins precise, et que ce probleme peut etre resolu en remplissant la chambre de mesure (1) et, de preference, aussi la chambre de reference (5) dans sa majeure partie avec un materiau de remplissage solide (2, 6) ayant une pluralite de cavites communiquant entre elles.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)