WO2002023135A1 - Capteur de deplacement et de l'effort - Google Patents
Capteur de deplacement et de l'effort Download PDFInfo
- Publication number
- WO2002023135A1 WO2002023135A1 PCT/FR2001/002762 FR0102762W WO0223135A1 WO 2002023135 A1 WO2002023135 A1 WO 2002023135A1 FR 0102762 W FR0102762 W FR 0102762W WO 0223135 A1 WO0223135 A1 WO 0223135A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- coil
- sensor
- rod
- piston
- stroke
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G13/00—Resilient suspensions characterised by arrangement, location or type of vibration dampers
- B60G13/001—Arrangements for attachment of dampers
- B60G13/003—Arrangements for attachment of dampers characterised by the mounting on the vehicle body or chassis of the damper unit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
- B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
- B60G15/06—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper
- B60G15/067—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper characterised by the mounting on the vehicle body or chassis of the spring and damper unit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/019—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the type of sensor or the arrangement thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/019—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the type of sensor or the arrangement thereof
- B60G17/01933—Velocity, e.g. relative velocity-displacement sensors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
- G01D5/2006—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils
- G01D5/202—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils by movable a non-ferromagnetic conductive element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/10—Mounting of suspension elements
- B60G2204/11—Mounting of sensors thereon
- B60G2204/112—Mounting of sensors thereon on dampers, e.g. fluid dampers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
- B60G2400/25—Stroke; Height; Displacement
- B60G2400/252—Stroke; Height; Displacement vertical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
- B60G2400/60—Load
Definitions
- the present invention relates to a sensor module integrating the measurement of the stroke of a brake pedal as well as the measurement of the force exerted on said pedal.
- a pneumatic brake booster or booster comprises a rigid envelope made up of two shells, on the one hand the cover and on the other hand the cylinder, which are crimped together.
- a variable-volume front chamber is separated from a variable-volume rear chamber by a flexible waterproof membrane and by a rigid skirt driving a pneumatic piston supported by via a control rod, on the primary piston of a tandem master cylinder of a hydraulic braking circuit.
- the front chamber directed towards the tandem master cylinder is hydraulically connected to a source of vacuum, while the rear chamber is hydraulically connected, in a controlled manner by a valve, to a source of propellant, typically air under atmospheric pressure.
- a force sensor is used on the control rod and, on the other hand, in the case of a servomotor, the pneumatic piston is used as the test body of a current stroke sensor.
- Foucault in the case of a master cylinder, the primary piston is used.
- the main object of the present invention is to propose a sensor module integrating the two functions, namely the force sensor and the braking stroke sensor, in order to provide the braking system with the most complete input information possible, while maintaining a simple and economical structure.
- the subject of the invention is a sensor module comprising a processing unit, a stroke sensor and a force sensor and suitable for determining, within the pneumatic brake booster or the associated master cylinder. , information concerning both the force applied to the brake pedal by determining the force exerted on an axially movable rod and the stroke of said rod by determining the position of the piston in engagement with the rod, characterized in that it comprises a first fixed electric coil surrounding said piston and said rod, as well as a second mobile electric coil surrounding the rod and connected to the sensor force, said coils being coaxial, an oscillatory voltage induced within said fixed coil generating eddy currents within said piston allowing the measurement of the stroke of said piston by the eddy current stroke sensor using the piston as a body test, and supplying energy to the force sensor via the voice coil, said fixed coil also serving as a support for the transmission of an electrical measurement signal generated by said force sensor.
- the information at the level of the force sensor is produced by the two concentric coils and is, therefore, a wireless transmission which makes it possible to dispense with a wired connection both for the power supply of the force sensor only for the recovery of the force measurement signal on the stroke of the control rod which lightens and simplifies the structure.
- said components of this wireless transmission, in particular the fixed coil also serve to create the eddy currents within the primary piston to perform the second function of the sensor module according to the invention.
- the sensor module according to the invention integrates, within the same module, the taking of information concerning the stroke of the pedal and the taking of information concerning the force exerted on it while using the same processing electronics, the same connection and the same fixed coil whatever the desired function: measurement of the two input parameters or measurement of one or the other alone.
- the stroke of the control rod is in the range of 40 to 50 mm.
- the rod 1 is axially movable in the piston body 2 in the pneumatic brake booster. On this rod 1 is mounted the force sensor 3.
- This rod 1 moves axially in the pneumatic brake booster and is surrounded by a sleeve 4 in which is housed, surrounding said rod 1, a first electric coil 5, called fixed coil.
- the fixed coil . 5 is supplied with sinusoidal voltage from the processing unit U and creates a flux A which varies in the voice coil 6. A voltage is then induced at the terminals of said voice coil 6 which is connected to the force sensor 3 and the supplies voltage.
- the sensor 3 When the sensor 3 acts, it emits an electrical signal S in the voice coil 6 whose amplitude, frequency or duty cycle depends on the force exerted on the rod 1.
- This electrical signal S is received by the fixed coil 5 which is connected to the processing unit U to which the signals S are sent.
- the rod 1 is made of steel and the radial air gap between the two fixed 5 and mobile 6 coils is 0.5 to 2 mm.
- the fixed coil 5 is longer than the voice coil 6 so that the voltage induced in the voice coil 6 varies less along the stroke of the rod 1.
- the fixed coil 5 subjected to a voltage generates currents .
- Eddy F in the primary piston 2 in order to measure the position of said primary piston 2 which serves as the test body for the eddy current stroke sensor.
- the present invention applies mainly to the braking systems industry for motor vehicles and in particular for passenger cars and in particular to pneumatic actuators for braking assistance • comprising a sensor module as defined above and / or master cylinders, in particular tandem master cylinders, comprising a sensor module as defined above.
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES01967431T ES2305102T3 (es) | 2000-09-15 | 2001-09-06 | Sensor de desplazamiento y esfuerzo. |
JP2002527735A JP2005508024A (ja) | 2000-09-15 | 2001-09-06 | ロッド行程の測定及び前記ロッドに発揮される力の測定の両方を統合するセンサモジュール |
AU2001287813A AU2001287813A1 (en) | 2000-09-15 | 2001-09-06 | Displacement and force sensor |
EP01967431A EP1320724B1 (fr) | 2000-09-15 | 2001-09-06 | Capteur de deplacement et de l'effort |
DE60133908T DE60133908D1 (de) | 2000-09-15 | 2001-09-06 | Weg- und- kraftgeber |
US09/979,816 US6871916B2 (en) | 2000-09-15 | 2001-09-06 | Sensor module integrating both the measurement of a rod travel and measurement of the force exerted on said rod |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0011837A FR2814233B1 (fr) | 2000-09-15 | 2000-09-15 | Module capteur integrant la mesure de la course d'une tige ainsi que la mesure de l'effort exerce sur ladite tige |
FR00/11837 | 2000-09-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002023135A1 true WO2002023135A1 (fr) | 2002-03-21 |
Family
ID=8854380
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2001/002762 WO2002023135A1 (fr) | 2000-09-15 | 2001-09-06 | Capteur de deplacement et de l'effort |
Country Status (9)
Country | Link |
---|---|
US (1) | US6871916B2 (fr) |
EP (1) | EP1320724B1 (fr) |
JP (1) | JP2005508024A (fr) |
AT (1) | ATE394651T1 (fr) |
AU (1) | AU2001287813A1 (fr) |
DE (1) | DE60133908D1 (fr) |
ES (1) | ES2305102T3 (fr) |
FR (1) | FR2814233B1 (fr) |
WO (1) | WO2002023135A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004026415A1 (de) * | 2004-05-29 | 2005-12-15 | Bayerische Motoren Werke Ag | Vorrichtung zur Erfassung der Lage eines Messobjekts |
EP3767247A1 (fr) * | 2019-07-19 | 2021-01-20 | General Electric Company | Systèmes et procédés de surveillance de tige de piston |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4329478B2 (ja) * | 2003-10-06 | 2009-09-09 | 株式会社日立製作所 | 力学量測定装置 |
JP2005132216A (ja) * | 2003-10-30 | 2005-05-26 | Matsushita Electric Ind Co Ltd | 踏力センサとそれを用いたペダル踏力検出装置 |
JP2006220574A (ja) * | 2005-02-14 | 2006-08-24 | Hitachi Ltd | 回転体力学量測定装置および回転体力学量計測システム |
DE102005037792B3 (de) * | 2005-08-10 | 2007-05-31 | Lucas Automotive Gmbh | Hauptbremszylinderanordnung für eine hydraulische Kraftfahrzeugbremsanlage und Kraftfahrzeugbremsanlage |
DE102007046139A1 (de) * | 2007-09-27 | 2009-04-02 | Deere & Company, Moline | Messvorrichtung und Messverfahren |
US8706358B2 (en) | 2011-10-21 | 2014-04-22 | Honda Motor Co., Ltd. | Method of controlling braking in a vehicle |
US9616875B2 (en) | 2014-09-11 | 2017-04-11 | Westinghouse Air Brake Technologies Corporation | Piston stroke sensor arrangement for a brake unit |
US10119873B2 (en) | 2014-09-15 | 2018-11-06 | Westinghouse Air Brake Technologies Corporation | Brake force sensor arrangement for a brake unit |
US10239506B2 (en) * | 2017-06-30 | 2019-03-26 | Veoneer Nissin Brake Systems Japan Co., Ltd. | System and method for sensing pedal rod to piston rod gap in a brake boost assist system of a master cylinder |
CN109839070B (zh) * | 2017-11-27 | 2020-10-23 | 上海华银电器有限公司 | 一种制动器气隙检测装置 |
DE102019125883A1 (de) * | 2019-09-26 | 2021-04-01 | Schaeffler Technologies AG & Co. KG | Linearaktuator mit Messvorrichtung zur Bestimmung einer Position eines linear bewegbaren Bauteils |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0447017A1 (fr) * | 1990-03-05 | 1991-09-18 | Borg-Warner Automotive, Inc. | Capteur linéaire avec coulisseau et boîtier concentriques |
EP0511807A1 (fr) * | 1991-04-27 | 1992-11-04 | Gec Avery Limited | Appareil et unité capteur pour afficher l'évolution d'une grandeur physique dans le temps |
US5541510A (en) * | 1995-04-06 | 1996-07-30 | Kaman Instrumentation Corporation | Multi-Parameter eddy current measuring system with parameter compensation technical field |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3891918A (en) * | 1971-03-23 | 1975-06-24 | James F Ellis | Linear displacement transducer utilizing an oscillator whose average period varies as a linear function of the displacement |
IL76813A (en) * | 1985-10-24 | 1989-08-15 | Eckstein Mordechai | Vehicle brakelights activating device |
US5563355A (en) * | 1993-05-24 | 1996-10-08 | Cj Design & Engineering, Inc. | Force sensor |
US5515041A (en) * | 1993-06-14 | 1996-05-07 | Simmonds Precision Products Inc. | Composite shaft monitoring system |
KR100329527B1 (ko) * | 1993-07-27 | 2002-10-04 | 루카스 인더스트리즈 피엘씨 | 전자제어식부스터를구비한차량브레이크시스템 |
DE69400578T2 (de) * | 1994-07-27 | 1997-02-06 | Lucas Ind Plc | Fahrzeugbremsanlage mit elektronisch gesteuertem Kraftverstärker |
US6422125B1 (en) * | 2001-02-28 | 2002-07-23 | Delphi Technologies, Inc. | Force sensor for an input push rod of a power booster |
US6612659B2 (en) * | 2001-08-28 | 2003-09-02 | Delphi Technologies, Inc. | Intelligent input push rod assembly |
-
2000
- 2000-09-15 FR FR0011837A patent/FR2814233B1/fr not_active Expired - Fee Related
-
2001
- 2001-09-06 ES ES01967431T patent/ES2305102T3/es not_active Expired - Lifetime
- 2001-09-06 DE DE60133908T patent/DE60133908D1/de not_active Expired - Lifetime
- 2001-09-06 WO PCT/FR2001/002762 patent/WO2002023135A1/fr active IP Right Grant
- 2001-09-06 AU AU2001287813A patent/AU2001287813A1/en not_active Abandoned
- 2001-09-06 US US09/979,816 patent/US6871916B2/en not_active Expired - Fee Related
- 2001-09-06 EP EP01967431A patent/EP1320724B1/fr not_active Expired - Lifetime
- 2001-09-06 AT AT01967431T patent/ATE394651T1/de not_active IP Right Cessation
- 2001-09-06 JP JP2002527735A patent/JP2005508024A/ja not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0447017A1 (fr) * | 1990-03-05 | 1991-09-18 | Borg-Warner Automotive, Inc. | Capteur linéaire avec coulisseau et boîtier concentriques |
EP0511807A1 (fr) * | 1991-04-27 | 1992-11-04 | Gec Avery Limited | Appareil et unité capteur pour afficher l'évolution d'une grandeur physique dans le temps |
US5541510A (en) * | 1995-04-06 | 1996-07-30 | Kaman Instrumentation Corporation | Multi-Parameter eddy current measuring system with parameter compensation technical field |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004026415A1 (de) * | 2004-05-29 | 2005-12-15 | Bayerische Motoren Werke Ag | Vorrichtung zur Erfassung der Lage eines Messobjekts |
DE102004026415B4 (de) * | 2004-05-29 | 2015-10-01 | Bayerische Motoren Werke Aktiengesellschaft | Vorrichtung zur Erfassung der Lage eines Messobjekts |
EP3767247A1 (fr) * | 2019-07-19 | 2021-01-20 | General Electric Company | Systèmes et procédés de surveillance de tige de piston |
US11499545B2 (en) | 2019-07-19 | 2022-11-15 | General Electric Company | Systems and methods for piston rod monitoring |
Also Published As
Publication number | Publication date |
---|---|
AU2001287813A1 (en) | 2002-03-26 |
US20040012253A1 (en) | 2004-01-22 |
EP1320724B1 (fr) | 2008-05-07 |
FR2814233A1 (fr) | 2002-03-22 |
DE60133908D1 (de) | 2008-06-19 |
JP2005508024A (ja) | 2005-03-24 |
FR2814233B1 (fr) | 2002-11-15 |
ATE394651T1 (de) | 2008-05-15 |
US6871916B2 (en) | 2005-03-29 |
ES2305102T3 (es) | 2008-11-01 |
EP1320724A1 (fr) | 2003-06-25 |
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