GB2119528A - Measuring load distribution - Google Patents

Measuring load distribution Download PDF

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Publication number
GB2119528A
GB2119528A GB08211835A GB8211835A GB2119528A GB 2119528 A GB2119528 A GB 2119528A GB 08211835 A GB08211835 A GB 08211835A GB 8211835 A GB8211835 A GB 8211835A GB 2119528 A GB2119528 A GB 2119528A
Authority
GB
United Kingdom
Prior art keywords
stage
sensor
sensing pad
floor
sensor units
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB08211835A
Other versions
GB2119528B (en
Inventor
Evan Samuel Thomas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
UK Secretary of State for Defence
Original Assignee
UK Secretary of State for Defence
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Priority to GB08211835A priority Critical patent/GB2119528B/en
Publication of GB2119528A publication Critical patent/GB2119528A/en
Application granted granted Critical
Publication of GB2119528B publication Critical patent/GB2119528B/en
Expired legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/1036—Measuring load distribution, e.g. podologic studies
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
    • G01G19/44—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing persons
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M1/00—Testing static or dynamic balance of machines or structures
    • G01M1/12—Static balancing; Determining position of centre of gravity
    • G01M1/122—Determining position of centre of gravity

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  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Medical Informatics (AREA)
  • Surgery (AREA)
  • Biophysics (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Molecular Biology (AREA)
  • Pathology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Dentistry (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

Apparatus for indicating the position of the centre of gravity of a person standing thereon has four floors, including a base 13, a sensing pad 10 and two intermediate floors 11, 12, the floors being linked by pillars 14, 16 and ties 15 so that compressive force between the base and the pad is translated into tensile force on the ties between the intermediate floors, there being sensors 18 of sideways deflections of the ties and sensors 17 of tensile strain in the ties. The apparatus facilitates the fitting of artificial legs and the study of human ageing and other ailment mechanisms. <IMAGE>

Description

SPECIFICATION Load distribution sensing apparatus The present invention relates to apparatus for sensing the distribution of a load thereon, and perhaps deriving therefrom the position of the centre of gravity of a body, in particular of a standing human being.
According to the present invention load distribution sensing apparatus comprises a sensing pad, a sensor stage supporting the sensing pad, a floor stage intermediate the sensing pad and the sensor stage and from which the sensor stage is dependent, and at least three sensor units and for measuring vertical movements of the sensor stage with respect to the floor stage, then at least three sensor units being spread around the centre of gravity of the sensing pad.
According to preferred features of the invention there are four sensor units, they are sited approximate the edges, indeed corners, of the sensing pad, the sensor units include detectors of sideways and rotational movement of the sensing pad with respect to the floor stage, and the sensor stage is suspended from the floor stage by tensile elements upon which the sensor units operate.
According to another feature of the invention the floor stage may be supported upon a base member arranged in operation to underlie the sensor members.
The apparatus is particularly useful in hospitals and centres of anatomical research, for assisting in determining the optimum fitting of an artificial leg or leg or hip joint member, for gauging the effect of and stage of recovery from various ailments and accidents, and for studying human ageing.
A load distribution sensing apparatus in accordance with the present invention will now be described by way of example with reference to the accompanying drawing, which is a perspective view of the apparatus.
As shown in the drawing the apparatus comprises a sensing pad 10, a sensor stage 1 1, a floor stage 12, intermediate the sensing pad and the sensor stage, and a base stage 13 below the sensor stage 1 The sensing pad 10 is supported on the sensor stage 1 1 by four pillars 14 passing freely through holes in the floor stage 12, while the sensor stage 1 1 is suspended from the floor stage 12 by four tensor elements 15. The floor stage 12 is supported on the base stage 13 by four pillars 16 which pass freely through holes in the sensor stage 1 1.Tensile strain sensors 17 are mounted on each of the tensor elements 1 5, while lateral deflection sensors 18 are mounted on carriers 19 rigidly suspended from the floor stage 12 and arranged for the detection of lateral movement of the bases of the tensor elements 1 5 with respect to the floor stage 12.
The sensors 17 and 18 are transducers adapted for electrical connection to a read out facility (not shown) whereby deflection readings can be recorded over a period of time, and also for connection to a CG position computer (not shown) for determining from the transducer signal, and recording positions of, the centre of gravity of a load on the sensing pad 10.
In operation of the apparatus as a sensor of CG movement of a person standing on the sensing pad 10 the tensor elements 15 will be in tension, strained by various amounts and deflected sideways also by virtue of the stance of the person and variations in that stance. These strains and deflections are detected by the sensors 17 and 18 and resolved to provide indications of CG position and variation. In the case, for example, of a person being fitted with an artificial leg or joint these indications will enable determination of the optimum fitting.

Claims (7)

Claims
1. Load distribution sensing apparatus comprising: a sensing pad, a sensor stage supporting the sensing pad, a floor stage intermediate the sensing pad and the sensor stage and from which the sensor stage is dependent, and at least three sensor units and for measuring vertical movements of the sensor stage with respect to the floor stage, then at least three sensor units being spread around the centre of gravity of the sensing pad.
2. Apparatus as claimed in claim 1 and wherein there are four sensor units for measuring the said vertical movements.
3. Apparatus as claimed in claim 1 and claim 2 and wherein the sensor units are sited approximate the edges of the sensing pad.
4. Apparatus as claimed in any one of claims 1 to 3 and wherein the sensor units include detectors of sideways and rotational movement of the sensing pad with respect to the floor stage.
5. Apparatus as claimed in any one of the preceding claims and wherein the sensor stage is suspended from the floor stage by tensile elements upon which the sensor units operate.
6. Apparatus as claimed in any one of the preceding claims and wherein the floor stage is supported upon a base member arranged in operation to underlie the sensor members.
7. Apparatus substantially as hereinbefore described with reference to the accompanying drawing.
GB08211835A 1982-04-23 1982-04-23 Measuring load distribution Expired GB2119528B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08211835A GB2119528B (en) 1982-04-23 1982-04-23 Measuring load distribution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08211835A GB2119528B (en) 1982-04-23 1982-04-23 Measuring load distribution

Publications (2)

Publication Number Publication Date
GB2119528A true GB2119528A (en) 1983-11-16
GB2119528B GB2119528B (en) 1986-01-29

Family

ID=10529915

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08211835A Expired GB2119528B (en) 1982-04-23 1982-04-23 Measuring load distribution

Country Status (1)

Country Link
GB (1) GB2119528B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2577672A1 (en) * 1985-02-14 1986-08-22 France Etat Armement Methods and devices for static balancing of a ship screw propeller or a similar rotating component
FR2619702A1 (en) * 1987-08-27 1989-03-03 Lecler Marie A device for detecting and correcting body balance anomalies
EP1582849A1 (en) * 2004-04-01 2005-10-05 S.C.A.I.M.E. S.A. Force sensor and balance equipped with such force sensor.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1068480A (en) * 1964-12-11 1967-05-10 Avery Ltd W & T Improvements in weighing apparatus
GB1350775A (en) * 1970-05-05 1974-04-24 Safelink Ab Load measuring system and a device arranged for transmitting loads to load cells
GB1528305A (en) * 1976-06-01 1978-10-11 Yaesu Rehabili Co Ltd Apparatus for analysing pedestrian balance of a human bod

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1068480A (en) * 1964-12-11 1967-05-10 Avery Ltd W & T Improvements in weighing apparatus
GB1350775A (en) * 1970-05-05 1974-04-24 Safelink Ab Load measuring system and a device arranged for transmitting loads to load cells
GB1528305A (en) * 1976-06-01 1978-10-11 Yaesu Rehabili Co Ltd Apparatus for analysing pedestrian balance of a human bod

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2577672A1 (en) * 1985-02-14 1986-08-22 France Etat Armement Methods and devices for static balancing of a ship screw propeller or a similar rotating component
FR2619702A1 (en) * 1987-08-27 1989-03-03 Lecler Marie A device for detecting and correcting body balance anomalies
EP1582849A1 (en) * 2004-04-01 2005-10-05 S.C.A.I.M.E. S.A. Force sensor and balance equipped with such force sensor.

Also Published As

Publication number Publication date
GB2119528B (en) 1986-01-29

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PCNP Patent ceased through non-payment of renewal fee