EP0358587A1 - Einrichtung zum Nachweis eines Drucks auf die Oberfläche von kohlenstoffgeladenem Gummi - Google Patents

Einrichtung zum Nachweis eines Drucks auf die Oberfläche von kohlenstoffgeladenem Gummi Download PDF

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Publication number
EP0358587A1
EP0358587A1 EP19890470015 EP89470015A EP0358587A1 EP 0358587 A1 EP0358587 A1 EP 0358587A1 EP 19890470015 EP19890470015 EP 19890470015 EP 89470015 A EP89470015 A EP 89470015A EP 0358587 A1 EP0358587 A1 EP 0358587A1
Authority
EP
European Patent Office
Prior art keywords
conductors
rubber
resistance
insulating
detection
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
EP19890470015
Other languages
English (en)
French (fr)
Other versions
EP0358587B1 (de
Inventor
Franck Ligier
Claude Maeder
Marc Nicolle
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.)
Electronique Controle Mesure
Original Assignee
Electronique Controle Mesure
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 Electronique Controle Mesure filed Critical Electronique Controle Mesure
Publication of EP0358587A1 publication Critical patent/EP0358587A1/de
Application granted granted Critical
Publication of EP0358587B1 publication Critical patent/EP0358587B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/10—Mechanical actuation by pressure on floors, floor coverings, stair treads, counters, or tills
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/021—Composite material
    • H01H1/029—Composite material comprising conducting material dispersed in an elastic support or binding material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/14—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for operation by a part of the human body other than the hand, e.g. by foot
    • H01H3/141—Cushion or mat switches
    • H01H3/142—Cushion or mat switches of the elongated strip type

Definitions

  • the present invention relates to an electrical support or passage detection device, its production methods and its applications to the detection of passage and the presence of vehicles and pedestrians, and to the production of "remote control switches" sensitive to the pressure.
  • This device consists in part of flat conductive tapes and carbon-laden rubber with low linear electrical resistance.
  • Devices comprising two deformable metal blades glued or held by any means to two opposite faces of a rubber element. These two metallic elements constitute a mechanical switch; when one of the two rubber supports is pressed, it deforms and the metal blades come into contact.
  • the subject of the present invention is the production of detection devices using the surface resistance of carbon-laden rubber, of greater or lesser hardness between 50 and 100 ShoresA, associated with the mechanical properties of the rubbers. It relates to a device for detecting axles or wheels of vehicles on a roadway of the type comprising on the same side of the device two fixed long conductors, placed opposite a deformable conductive rubber element also of great length.
  • the assembly may have the shape of a very long profile which can be extruded.
  • the profile can be rectangular or trapezoidal to be mechanically fixed to the ground.
  • the present invention also relates to the realization of "remote control switches" of great tightness characterized in that they comprise a block of conductive rubber coming into contact under the force of a finger with conductors placed for example on a printed circuit.
  • the present invention also relates to the production of carpets sensitive to the passage or stay of an object or a pedestrian, characterized in that a flat conductive rubber element is deformed through an insulating plate to come into contact. with one or more conductors, the other face of the rubber plate being, as the case may be, electrically insulated or in contact with a second conductor.
  • FIG. 1 describes the basic system according to the invention which comprises: - a rigid or semi-rigid support (1) - electrical conductors (3) placed on an insulating material (2) - carbon-laden rubber (5) with a hardness greater than 50 shores A. - This rubber (5) is linked to the support (1) by a rigid or deformable system (4).
  • the resistance between the conductors 31 and 32, or 32 and 33 is infinite.
  • a low effort and which depends on the mechanical rigidity of the system formed by (4) and (5) will allow the mechanical contact of the rubber (5) with the conductors 31, 32, 33; then the resistance measured between these conductors will be several hundred thousand Ohms.
  • the electrical resistance measured between the conductors 31, 32, or 32 and 33 drops very quickly to become less than a few thousand Ohms.
  • a very simple electronic detection circuit can be produced in which the resistance of the system (8) is compared to that of a potentiometer (9) by a comparator (10). The response (12) from this comparator (10) will be instantaneous. A timer system can be added; then the signal at 13 will only appear after (12) has been held for a time longer than the time delay defined by (11).
  • the present invention applies to the measurement of the passage of vehicles on a roadway using a piece of great length and narrow width, deformable in carbon-laden rubber which comes into contact with two conductors and the resistance of which is measured. using a more or less sophisticated electronic circuit, the two elements being connected by a two-conductor cable not shown.
  • a piece of conductive rubber (14) of hardness greater than or equal to 50 ShoresA, of small cross section and of great length comprises a cavity (19) in which the two conductors are placed ( 16 and 17) on an electrical insulator (18).
  • the two conductors (16 and 17) can be flat or curved. They can be laminated and glued on an insulating support.
  • the assembly of the insulating support (18) and of the two conductors (16 and 17) can also be in the form of a flexible or "flex-rigid" printed circuit.
  • the assembly formed by the two conductors and their insulating support adheres to the lower surface of the profile (14) by any known means, such as cold glue, hot glue, double-sided adhesive, chemical adhesion of rubber ...
  • the profile (14) is installed in a mechanical system (15) which is itself sealed in the roadway (20).
  • the dynamic and static properties of such a system can be adjusted by varying either the hardness of the rubber between 50 and 100 Shores A, used to make the profile (14), or the shape of the cavity (19), or the distance at rest (22) between upper face of the cavity (19) and upper face of the conductors (16 and 17).
  • Such a detection system can have other applications, such as door closing detection, for example in railway or metropolitan cars, or for motorized gate doors.
  • This system is described in Figure 4 where a sensitive element (23) of the type described in Figure 3 is placed on the side of a sliding door (24). Any object (26) will be easily detected when the door (24) is closed in the direction (25) so as to avoid any accident.
  • the device according to FIGS. 5a, b, c and d is produced by molding or molding and gluing of one or two rubber blocks (27) in which is placed a flexible or non-flexible printed circuit (28) on which there are two conductors (29 and 30) arranged for example in a spiral.
  • the device can be produced by placing the conductors on each side of the carbon-laden rubber as shown in FIGS. 6a, b and c, where the carbon-laden rubber plate (34) is in contact on one side with a conductive plate (36) integral with a rigid support (32) and the other with a sheet of insulating material pierced with holes.
  • Another conductive plate (33) integral with another rigid support (32) is placed on the insulating plate. At rest, the resistance between the two conducting planes (33 and 36) is infinite; if a compression force is applied, the rubber deforms through the holes in the plate (35) to come into contact with the upper conductive plane (33), the electronic system described in FIG. 2 will detect this contact.
  • FIG. 6a, b and c the carbon-laden rubber plate
  • the two conductors (33) and (36) can be placed on one side of the conductive rubber (34) by isolating them from the latter by the plate (35).
  • the rubber deforms through holes to come into mechanical contact with the two conductors (33) and (36) so as to allow detection.
  • Such plates can be used for the detection and localization of heavy objects, pedestrians when approaching a road crossing, people near areas where robots or automatic machines move.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Push-Button Switches (AREA)
  • Traffic Control Systems (AREA)
EP19890470015 1988-07-27 1989-07-25 Einrichtung zum Nachweis eines Drucks auf die Oberfläche von kohlenstoffgeladenem Gummi Expired - Lifetime EP0358587B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8810349 1988-07-27
FR8810349A FR2634926B1 (fr) 1988-07-27 1988-07-27 Dispositif de detection d'appui sur une surface, par caoutchouc charge de carbone

Publications (2)

Publication Number Publication Date
EP0358587A1 true EP0358587A1 (de) 1990-03-14
EP0358587B1 EP0358587B1 (de) 1993-12-29

Family

ID=9368980

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890470015 Expired - Lifetime EP0358587B1 (de) 1988-07-27 1989-07-25 Einrichtung zum Nachweis eines Drucks auf die Oberfläche von kohlenstoffgeladenem Gummi

Country Status (3)

Country Link
EP (1) EP0358587B1 (de)
DE (1) DE68911802D1 (de)
FR (1) FR2634926B1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0582733A1 (de) * 1992-08-11 1994-02-16 LEDA Logarithmic Electrical Devices for Automation S.r.l. Vorrichtung zur Überwachung der Öffnungs- oder Schliessstellung eines Fensters oder einer Tür, zum Beispiel eines Gebäudes oder eines Fahrzeuges
NL9300456A (nl) * 1993-03-15 1994-10-03 Marmat Fa Alarmsysteem voor een bed, stoel of dergelijke en een sensor daarvoor.
CH691151A5 (fr) * 1994-06-09 2001-04-30 Edouard Menoud Dispositif de surveillance et d'alerte de la présence de corps en danger dans une piscine.
CN101984471A (zh) * 2010-11-22 2011-03-09 武汉理工大学 基于弥散碳纤维材料的智能防盗地垫及其应用
FR2978974A1 (fr) * 2011-08-12 2013-02-15 Claude Desgorces Revetement de sol
GB2511356A (en) * 2013-03-01 2014-09-03 Isensol Ltd Pressure mat

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2791173B1 (fr) 1999-03-19 2001-06-29 Electronique Controle Mesure Dispositif de detection d'appui et de passage de roue de vehicule sur une chaussee utilisant un caoutchouc conducteur et son procede de pose

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB342157A (de) * 1929-11-27 1931-01-29 Leopold Rado
DE530544C (de) * 1930-05-06 1931-07-30 Sternberg Traffic Automaten Co In der Strassenfahrbahn angeordneter Schalter fuer Verkehrsregler
FR2201512A1 (de) * 1972-10-02 1974-04-26 Acome
US3991415A (en) * 1975-10-02 1976-11-09 Baar Sr Haward A Alarm and light system
FR2415844A1 (fr) * 1978-01-30 1979-08-24 Segall Jacques Tapis ou tapisserie generateurs de signal
EP0207450A2 (de) * 1985-07-03 1987-01-07 Mitsuboshi Belting Ltd. Druckempfindlicher leitfähiger Gummiwerkstoff

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB342157A (de) * 1929-11-27 1931-01-29 Leopold Rado
DE530544C (de) * 1930-05-06 1931-07-30 Sternberg Traffic Automaten Co In der Strassenfahrbahn angeordneter Schalter fuer Verkehrsregler
FR2201512A1 (de) * 1972-10-02 1974-04-26 Acome
US3991415A (en) * 1975-10-02 1976-11-09 Baar Sr Haward A Alarm and light system
FR2415844A1 (fr) * 1978-01-30 1979-08-24 Segall Jacques Tapis ou tapisserie generateurs de signal
EP0207450A2 (de) * 1985-07-03 1987-01-07 Mitsuboshi Belting Ltd. Druckempfindlicher leitfähiger Gummiwerkstoff

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0582733A1 (de) * 1992-08-11 1994-02-16 LEDA Logarithmic Electrical Devices for Automation S.r.l. Vorrichtung zur Überwachung der Öffnungs- oder Schliessstellung eines Fensters oder einer Tür, zum Beispiel eines Gebäudes oder eines Fahrzeuges
NL9300456A (nl) * 1993-03-15 1994-10-03 Marmat Fa Alarmsysteem voor een bed, stoel of dergelijke en een sensor daarvoor.
CH691151A5 (fr) * 1994-06-09 2001-04-30 Edouard Menoud Dispositif de surveillance et d'alerte de la présence de corps en danger dans une piscine.
CN101984471A (zh) * 2010-11-22 2011-03-09 武汉理工大学 基于弥散碳纤维材料的智能防盗地垫及其应用
FR2978974A1 (fr) * 2011-08-12 2013-02-15 Claude Desgorces Revetement de sol
WO2013024212A1 (fr) * 2011-08-12 2013-02-21 Aptim Revêtement de sol amélioré
US9619987B2 (en) 2011-08-12 2017-04-11 Abcd Innovation Floor covering
GB2511356A (en) * 2013-03-01 2014-09-03 Isensol Ltd Pressure mat
GB2511356B (en) * 2013-03-01 2016-02-17 Isensol Ltd Pressure mat

Also Published As

Publication number Publication date
FR2634926B1 (fr) 1994-03-25
EP0358587B1 (de) 1993-12-29
FR2634926A1 (fr) 1990-02-02
DE68911802D1 (de) 1994-02-10

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