FR2616906A1 - Pressure and deformation sensor - Google Patents

Pressure and deformation sensor Download PDF

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Publication number
FR2616906A1
FR2616906A1 FR8708579A FR8708579A FR2616906A1 FR 2616906 A1 FR2616906 A1 FR 2616906A1 FR 8708579 A FR8708579 A FR 8708579A FR 8708579 A FR8708579 A FR 8708579A FR 2616906 A1 FR2616906 A1 FR 2616906A1
Authority
FR
France
Prior art keywords
pressure
spring
deformation sensor
compression
sensor according
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Withdrawn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
FR8708579A
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French (fr)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR8708579A priority Critical patent/FR2616906A1/en
Priority to FR8801215A priority patent/FR2626670A1/en
Priority to FR8804342A priority patent/FR2641233A1/en
Publication of FR2616906A1 publication Critical patent/FR2616906A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/02—Signalling devices actuated by tyre pressure
    • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
    • F16D66/02—Apparatus for indicating wear
    • F16D66/021—Apparatus for indicating wear using electrical detection or indication means
    • 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
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
    • G01L9/0051—Transmitting or indicating the displacement of flexible diaphragms using variations in ohmic resistance
    • G01L9/0058—Transmitting or indicating the displacement of flexible diaphragms using variations in ohmic resistance of pressure sensitive conductive solid or liquid material, e.g. carbon granules
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
    • F16D2066/005—Force, torque, stress or strain

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

The invention relates to fluid or mechanical pressure sensors, making it possible to obtain information on an upper or lower limit pressure. It comprises a threaded piece 9 forming a container. This piece is passed through by two enamelled copper wires 11 and 12 which are the input and output of the electrical current. A plug of adhesive 10 seals the passage of the two wires which have two of their ends respectively welded onto membranes 4 and 6 by weld points 15 and 16. A support 8, fitted into the piece 9, accommodates, adhesively bonded together, the membrane 6, the O-ring 5, the membrane 4 and the spring 3. The spring, integral with the ball joint 2 hinged in the plug 1 makes it possible, by manipulating the latter, to adjust (in addition to the pressure of the fluid occupying the input 13 and the recess 14) the compression, or resistance to passing of the electrical current, of the small coal 7. Amongst the most important applications of the invention, mention may be made of the remote monitoring of the pressure in tyres and the monitoring of the movement of a movable object.

Description

CAFTEUR DE FESSIONS ET DE DEFORM;ATIONS
La présente invention concerne un dispositif permettant de contrôler la pression d'un fluide ou une déformation de pièce mécanique, par exemple par rapport à une autre.CATEGORY OF FESSIONS AND DEFORM; ATIONS
The present invention relates to a device for controlling the pressure of a fluid or a deformation of a mechanical part, for example with respect to another.

Les dispositifs connus de ce genre présentent des inconvénients. Known devices of this kind have drawbacks.

Le manomètre a celui autre encombrant et dans la plupart des cas tributaire d'un tuyau et d'un robinet. Les jauges de contraintes avec leur appareillage électronique, ainsi que les comparateurs, ont celui d'être d'un prix de revient élevé justifié par leur fiabilité.The pressure gauge has the other bulky one and in most cases depends on a hose and a tap. The strain gauges with their electronic equipment, as well as the comparators, have the advantage of being of a high cost price justified by their reliability.

Le capteur de pressions et de déformations, selon l'invention, offre la possibilité de contrtler de faibles écarts de pression sur une échelle donnée. Son encombrement est réduit et son cott peut être très bas. I1 est constitué de grenaille de charbon retenue prisonnière dans le diamètre intérieur d'un joint torique à quatre lobes, par deux membranes en matériau conducteur d'électricité, collées de part et d'autre du joint torique et sur chacune desquelles un fil de cuivre émaillé est soudé. A noter que les membranes peuvent être en matériau non conducteur électriquement. Dans ce cas, deux des extrémités des deux fils pénètrent au travers de l'une des membranes d'une façon étanche pour être en contact avec la grenaille de charbon.Un ressort collé ou soudé sur une membrane est solidaire d'une rotule non conductrice électriquement et d'un bouchon, il permet d'étalonner la compression, ou résistance au passage du courant électrique de la grenaille de charbon. Le support, non conducteur électriquement, du bloc constitué par la grenaille de charbon, le joint torique, et les deux membranes, offre, avec sa pièce support, un passage au fluide vers un chambrage du bouchon, ainsi que la possibilité d'un contact mécanique avec la membrane inférieure. The pressure and deformation sensor according to the invention offers the possibility of controlling small pressure differences on a given scale. Its size is reduced and its cost can be very low. I1 consists of coal shot held captive in the inside diameter of an O-ring with four lobes, by two membranes of electrically conductive material, glued on either side of the O-ring and on each of which a copper wire enamelled is welded. Note that the membranes can be made of an electrically non-conductive material. In this case, two of the ends of the two wires penetrate through one of the membranes in a sealed manner to be in contact with the coal shot. A spring glued or welded to a membrane is integral with a non-conductive ball joint electrically and with a plug, it allows to calibrate the compression, or resistance to the passage of the electric current of the coal shot. The support, not electrically conductive, of the block constituted by the coal shot, the O-ring, and the two membranes, offers, with its support piece, a passage for the fluid towards a recess of the cap, as well as the possibility of contact mechanical with the lower membrane.

Le dessin annexé est une vue en coupe du dispositif. The accompanying drawing is a sectional view of the device.

Tel qu'il est représenté-, le dispositif comporte une partie (9) qui se visse d'un c8té sur une capacité et qui reçoit de l'autre c8té, enchâssée et collée, une pièce non conductrice électriquement. Sur cette pièce sont collés également : la membrane (6), le joint torique (5), la membrane (4) et le ressort (3). Ce ressor est solidaire de la rotule (2) non conductrice électriquement. As shown, the device comprises a part (9) which is screwed from one side to a capacitor and which receives from the other side, embedded and glued, an electrically non-conductive part. This part is also bonded: the membrane (6), the O-ring (5), the membrane (4) and the spring (3). This spring is integral with the ball (2) not electrically conductive.

Complétant le dispositif, le support de rotule (1) qui se visse (filetage étanche) sur la partie (9), permet de comprimer plus ou moins par l'intermédiaire du ressort (3) la grenaille de charbon (7). Des passages (13) communiquent vers le dessous de la membrane (6) et le chambrage (14). Deux fils de cuivre émaillés (11) et (12) soudés en (15) et (16) sur les membranes (4) et (6) voient l'orifice de leur sortie de la pièce (9) obstruée par de la colle (10).Completing the device, the ball joint support (1) which is screwed (tight thread) on the part (9), makes it possible to compress more or less by means of the spring (3) the coal shot (7). Passages (13) communicate towards the underside of the membrane (6) and the recess (14). Two enamelled copper wires (11) and (12) soldered in (15) and (16) on the membranes (4) and (6) see the orifice of their exit from the part (9) obstructed by glue ( 10).

Le dispositif, objet de l'invention, peut être utilisé dans tous les cas où une pression, une variation de pression doit titre détectée ainsi que, selon le montage utilisé, Ie déplacement d'une pièce mécanique, par exemple, par rapport à une autre. The device, object of the invention, can be used in all cases where a pressure, a pressure variation must be detected as well as, depending on the assembly used, the movement of a mechanical part, for example, relative to a other.

Une des applications interessantes peut être la détection à distance (intérieur d'une voiture) d'une pression à ne pas dépasser dans le gonflement des pneumatiques.One of the interesting applications can be the remote detection (inside a car) of a pressure not to be exceeded in the inflation of tires.

Outre l'industrie, d'autres applications dans des domaines variés tels que médicaux et domestiques, peuvent etre envisagés. Besides industry, other applications in various fields such as medical and domestic, can be envisaged.

Claims (4)

REVENDICATIONS 1. Capteur de pression et de déformation caractérisé en ce que la grenaille de charbon (T) prisonnière entre des membranes (4) et (6) conductrices électriquement ou non et un joint torique (5) collés entre eux, voit sa résistance au courant électrique vanter selon la pression du fluide admis au contact de leurs surfaces extérieures et la compression ou l'extension du ressort (3) solidaire de l'articulation sphérique (2c)..  1. Pressure and deformation sensor characterized in that the carbon shot (T) trapped between membranes (4) and (6) electrically conductive or not and an O-ring (5) bonded together, sees its resistance to current electric boast according to the pressure of the fluid admitted in contact with their external surfaces and the compression or extension of the spring (3) integral with the ball joint (2c). 2.. Capteur de pression et de déformation selon la revendication 1 caractérisé en ce que De ressort (3) permet de tarer la valeur de compression ou résistance au passage du courant électrique de la grenaille de charbon (T/)  2 .. pressure and deformation sensor according to claim 1 characterized in that spring (3) allows to calibrate the compression value or resistance to the passage of the electric current of the coal shot (T /) 3. Capteur de pression et de déformation selon la revendication caractérisé en ce que la compression ou l'extension du ressort (3) sont assurées par l'intermédiaire d'une articulation sphérique (2). 3. Pressure and deformation sensor according to claim characterized in that the compression or extension of the spring (3) is ensured by means of a spherical joint (2). 44 Capteur de pression et de diformation selon da revendication 1 caractérisé en ce que le joint torique (5) collé sur les membranes (4) et ( & est un isolant électrique et une articu -lation souple. 44 Pressure and diformation sensor according to da claim 1 characterized in that the O-ring (5) bonded to the membranes (4) and (& is an electrical insulator and a flexible articulation. 5.. Capteur de pression et de déformation selon la revendication 1 caractérisé en ae que les membranes (4) et (6) peuvent être en matériau non conducteur électriquement à condition que deux extrémités des fils électriques (11) et (12) soient en contact avec la grenaille de charbon (7). 5 .. pressure and deformation sensor according to claim 1 characterized in ae that the membranes (4) and (6) can be of electrically non-conductive material provided that two ends of the electric wires (11) and (12) are in contact with the coal shot (7). 6. Capteur de pression et de déformation selon la revendication 2 ou la revendication 5 caractérisé en ce que l'action du ressort (3:) en compression sur la membrane flexible (4) peut étre compensée par une poussée sur la face interne de celle-ci..  6. Pressure and deformation sensor according to claim 2 or claim 5 characterized in that the action of the spring (3 :) in compression on the flexible membrane (4) can be compensated by a thrust on the internal face of that -this..
FR8708579A 1987-06-17 1987-06-17 Pressure and deformation sensor Withdrawn FR2616906A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR8708579A FR2616906A1 (en) 1987-06-17 1987-06-17 Pressure and deformation sensor
FR8801215A FR2626670A1 (en) 1987-06-17 1988-01-29 Pressure and deformation sensor
FR8804342A FR2641233A1 (en) 1987-06-17 1988-03-28 Sensor for pressures and deformations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8708579A FR2616906A1 (en) 1987-06-17 1987-06-17 Pressure and deformation sensor

Publications (1)

Publication Number Publication Date
FR2616906A1 true FR2616906A1 (en) 1988-12-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
FR8708579A Withdrawn FR2616906A1 (en) 1987-06-17 1987-06-17 Pressure and deformation sensor

Country Status (1)

Country Link
FR (1) FR2616906A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109141337A (en) * 2018-07-26 2019-01-04 杭州前茂保健食品有限公司 Box cover component in the askew bottle detection device of vial
CN110454531A (en) * 2019-07-11 2019-11-15 江苏长龄液压股份有限公司 A kind of center is equipped with the spring of detection medium
CN112727965A (en) * 2020-12-24 2021-04-30 三一重型装备有限公司 Fault monitoring method and device for brake of coal mining machine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2248301A (en) * 1936-10-09 1941-07-08 Albert W Krause Device for measuring pressure
FR937877A (en) * 1945-12-19 1948-08-30 Speed Marketing Company Sussex Electrical device for controlling gauges and pressure gauges
JPS5917123A (en) * 1982-07-21 1984-01-28 Sekisui Jushi Co Ltd Pressure sensitive sensor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2248301A (en) * 1936-10-09 1941-07-08 Albert W Krause Device for measuring pressure
FR937877A (en) * 1945-12-19 1948-08-30 Speed Marketing Company Sussex Electrical device for controlling gauges and pressure gauges
JPS5917123A (en) * 1982-07-21 1984-01-28 Sekisui Jushi Co Ltd Pressure sensitive sensor

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
IBM TECHNICAL DISCLOSURE BULLETIN, vol. 13, no. 6, novembre 1970, page 1546, New York, US; R.R. JOHNSON et al.: "Pneumatic to electric transducers" *
MEASUREMENT TECHNIQUES, vol. 21, no. 2, février 1978, pages 238-240, Plenum Publishing Corp., New York, US; A.SH. KATSNEL'SON: "Dynamometric transducers based on granular conducting material contact resistances" *
PATENT ABSTRACTS OF JAPAN, vol. 8, no. 109 (P-275)[1546], 22 mai 1984; & JP-A-59 17 123 (SEKISUI JIYUSHI K.K.) 28-01-1984 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109141337A (en) * 2018-07-26 2019-01-04 杭州前茂保健食品有限公司 Box cover component in the askew bottle detection device of vial
CN110454531A (en) * 2019-07-11 2019-11-15 江苏长龄液压股份有限公司 A kind of center is equipped with the spring of detection medium
CN112727965A (en) * 2020-12-24 2021-04-30 三一重型装备有限公司 Fault monitoring method and device for brake of coal mining machine
CN112727965B (en) * 2020-12-24 2023-02-24 三一重型装备有限公司 Fault monitoring method and device for brake of coal mining machine

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