EP1144970A2 - Dispositif miniaturisee de detection de la distribution des contraintes de surface - Google Patents

Dispositif miniaturisee de detection de la distribution des contraintes de surface

Info

Publication number
EP1144970A2
EP1144970A2 EP00964619A EP00964619A EP1144970A2 EP 1144970 A2 EP1144970 A2 EP 1144970A2 EP 00964619 A EP00964619 A EP 00964619A EP 00964619 A EP00964619 A EP 00964619A EP 1144970 A2 EP1144970 A2 EP 1144970A2
Authority
EP
European Patent Office
Prior art keywords
miniaturised
sensor device
sensors
force sensor
printed board
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.)
Withdrawn
Application number
EP00964619A
Other languages
German (de)
English (en)
Other versions
EP1144970A3 (fr
Inventor
Saad Jabir
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.)
Encass Srl
Original Assignee
Encass Srl
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 Encass Srl filed Critical Encass Srl
Publication of EP1144970A2 publication Critical patent/EP1144970A2/fr
Publication of EP1144970A3 publication Critical patent/EP1144970A3/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L17/00—Devices or apparatus for measuring tyre pressure or the pressure in other inflated bodies
    • G01L17/005—Devices or apparatus for measuring tyre pressure or the pressure in other inflated bodies using a sensor contacting the exterior surface, e.g. for measuring deformation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/22—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers
    • G01L5/226—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers to manipulators, e.g. the force due to gripping
    • G01L5/228—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers to manipulators, e.g. the force due to gripping using tactile array force sensors

Definitions

  • the present invention relates to a miniaturised force sensor device for sensing a surface force distribution.
  • a particular object of the invention is to provide a sensor device which is capable of withstand also a considerable stress without undergoing structural modifications that could change its operating precision.
  • a further object of the present invention is to provide a device which is capable of ensuring the highest reliability and safety of use owing to its peculiar features.
  • Not last aim of the present invention is to provide a miniaturised force sensor device for sensing the surface force distribution which can be easily manufactured by using elements and materials that can be readily found on the market, such device being further competitive from an economic point of view.
  • a miniaturised force sensor device for sensing the surface force distribution, characterized in that there is provided a metal plate to which a printed board is applied for supporting a plurality of sensors made of a ceramic support on which a resistive paste is printed, such resistive paste having contacts that can be connected by soldering to the contacts of a printed board to make a mechanical, electrical connection.
  • Fig. 1 shows schematically a perspective view of the force sensor device according to the invention
  • Fig. 2 shows the electric operating circuit.
  • the miniaturised force sensor device for sensing the surface force distribution includes a thick metal plate 1 to which a printed board 2 is glued by a structural glue so that the circuit itself does not undergo deformation .
  • Sensors 3 made by thick or thin film technology are applied to the printed board by printing a resistive paste 4 on a ceramic layer 5.
  • Resistive paste 4 forms contacts 6 which are connected by soldering to the corresponding contacts 8 of the printed board.
  • Soldering have the function of providing a mechanical fastening to the printed board and at the same time an electrical connection to the other sensors and the outside interface and control circuits.
  • the single sensor on the ceramic may have a variety of resistances.
  • support means 10 are provided in the printed board so that the deformation of the ceramic is facilitated. In fact upon application of a force to the sensor, the ceramic deforms and causes the resistance to extend and to change its value.
  • the variation of the resistance is linearly proportional to the force applied to the single sensor.
  • the sensors formed by one resistance are arranged on a matrix of columns and rows and are connected to the printed board.
  • the signals sensed by the sensors are fed to the outside through connectors provided on the printed board .
  • the operating electronics includes essentially a microcontroller 20 which provides for controlling data collection and is connected via an analogue-to-digital converter 21 to a first multiplexer 22 which is connected to operational amplifiers 23 which are associated to the rows of the sensor matrix and detect a voltage that varies depending on the sensor resistance.
  • a second multiplexer 25 operating one sensor column at a time is provided.
  • Microcontroller 20 is associated to a data storage memory 27, moreover an interface 28 for the connection to a PC 29 is provided.
  • the electronics provided with a microcontroller collects and stores force values from the matrix as well as operates according to a series communication protocol or is computer-aided.
  • the computer software displays the maps of forces on the plane of the matrix and the interface circuit provides to the insulation among cells so that any sensor senses only the force applied to its surface.
  • the reference voltage used by the operational amplifiers may vary from 100 mV to 10 V depending on the next amplification circuit and the power supply.
  • Microcontroller operates one column at a time by controlling the second multiplexer. The voltage of the operated column will then be present at the output of the amplifiers.
  • the microcontroller converts the signal of one amplifier at a time and the converted data is then stored in a local memory.
  • the communication protocol to the computer controls the transmission of such data to the computer so that it can be processed and displayed as well as stored in the bulk memory of the computer.
  • the electronics of the computer provides for the compensation of the initial errors in each sensor and corrects the differences in the dynamic response of the single sensors .
  • the thus connected and arranged sensors have the objects of providing a map of distribution of the forces perpendicular to the surfaces so that they are particularly suitable for the application to different fields such as the forces under the tires and the forces acting on a walking surface in orthopaedia. From the foregoing one can see how the invention accomplishes the proposed objects. Moreover, it should be appreciated that a particularly practical and functional sensor device is provided.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

L'invention porte sur une jauge miniaturisée de détection de la distribution des contraintes de surface comportant une plaque métallique à laquelle est fixée une plaquette de circuit intégré, portant plusieurs capteurs et consistant en un substrat céramique sur lequel est imprimée une pâte résistante présentant des contacts pouvant être soudés à ceux du CI de manière à former une connexion électrico/mécanique.
EP00964619A 1999-09-13 2000-09-13 Dispositif miniaturisee de detection de la distribution des contraintes de surface Withdrawn EP1144970A3 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITMI990565 ITMI990565U1 (it) 1999-09-13 1999-09-13 Dispositivo sensore di forza miniaturizzato per il rilevamento della distribuzione di forza su una superficie
ITMI990565U 1999-09-13
PCT/IT2000/000361 WO2001020284A2 (fr) 1999-09-13 2000-09-13 Dispositif miniaturisee de detection de la distribution des contraintes de surface

Publications (2)

Publication Number Publication Date
EP1144970A2 true EP1144970A2 (fr) 2001-10-17
EP1144970A3 EP1144970A3 (fr) 2002-01-30

Family

ID=11382357

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00964619A Withdrawn EP1144970A3 (fr) 1999-09-13 2000-09-13 Dispositif miniaturisee de detection de la distribution des contraintes de surface

Country Status (5)

Country Link
EP (1) EP1144970A3 (fr)
JP (1) JP2003509685A (fr)
AU (1) AU7553900A (fr)
IT (1) ITMI990565U1 (fr)
WO (1) WO2001020284A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0415258D0 (en) * 2004-07-07 2004-08-11 Wheelright Ltd Vehicle tyre checking system
CN103954393B (zh) * 2013-11-26 2016-02-10 北京理工大学 基于测力板的人致载荷测试系统
CN104180932B (zh) * 2014-08-21 2016-06-08 电子科技大学 一种分布式交互力测量装置及其测量方法
CN111307363B (zh) * 2020-02-18 2021-10-29 深圳市双盈电子科技有限公司 一种胎压检测装置及其使用方法
JP7643212B2 (ja) * 2021-03-10 2025-03-11 Ｔｏｐｐａｎホールディングス株式会社 シート状センサ及びその製造方法
WO2022190840A1 (fr) * 2021-03-10 2022-09-15 凸版印刷株式会社 Capteur stratiforme et son procédé de fabrication

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1270194B (it) * 1994-06-09 1997-04-29 Pirelli Dispositivo per rilevare la distribuzione della pressione specifica nell'area di impronta di un pneumatico per veicoli e metodo di rilevamento da esso attuato

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0120284A3 *

Also Published As

Publication number Publication date
JP2003509685A (ja) 2003-03-11
ITMI990565U1 (it) 2001-03-13
EP1144970A3 (fr) 2002-01-30
WO2001020284A2 (fr) 2001-03-22
WO2001020284A3 (fr) 2001-09-27
AU7553900A (en) 2001-04-17
ITMI990565V0 (it) 1999-09-13

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