DE102007047547B4 - Device and method for detecting an operating force of a brake pedal - Google Patents
Device and method for detecting an operating force of a brake pedal Download PDFInfo
- Publication number
- DE102007047547B4 DE102007047547B4 DE102007047547.2A DE102007047547A DE102007047547B4 DE 102007047547 B4 DE102007047547 B4 DE 102007047547B4 DE 102007047547 A DE102007047547 A DE 102007047547A DE 102007047547 B4 DE102007047547 B4 DE 102007047547B4
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- Germany
- Prior art keywords
- force
- receiving member
- hall
- force receiving
- transmission member
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/04—Brake-action initiating means for personal initiation foot actuated
- B60T7/042—Brake-action initiating means for personal initiation foot actuated by electrical means, e.g. using travel or force sensors
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- 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
- G01L5/225—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 foot actuated controls, e.g. brake pedals
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
- G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
- G05G1/30—Controlling members actuated by foot
- G05G1/38—Controlling members actuated by foot comprising means to continuously detect pedal position
Abstract
Vorrichtung (1) zum Erfassen einer Betätigungskraft eines Bremspedals mit einem mit dem Bremspedal gekoppelten Kraftaufnahmeglied (2) und einem relativ zu dem Kraftaufnahmeglied (2) bewegbaren mit einer Bremsanlage gekoppelten Kraftübertragungsglied (3) und einer Sensoreinrichtung, wobei die Sensoreinrichtung einen Hallsensor (6) umfasst, der an dem Kraftaufnahmeglied (2) oder dem Kraftübertragungsglied (3) angeordnet ist, wobei ein dem Hallsensor (6) gegenüberliegender Permanentmagnet (5) oder Elektromagnet an dem Kraftübertragungsglied (3) oder dem Kraftaufnahmeglied (2) angeordnet ist, so dass eine Relativbewegung zwischen Kraftaufnahmeglied (2) und dem Kraftübertragungsglied (3) eine Änderung der Hallspannung verursacht, dadurch gekennzeichnet, dass die Sensoreinrichtung mindestens einen zweiten Hallsensor (7) umfasst, wobei das Kraftaufnahmeglied (2) und das Kraftübertragungsglied (3) über eine Federanordnung (4) miteinander gekoppelt sind, wobei die mindestens zwei Hallsensoren (6, 7) an gegenüberliegenden Seiten des Permanentmagneten (5) oder Elektromagneten angeordnet sind.Device (1) for detecting an actuating force of a brake pedal with a force-receiving member (2) coupled to the brake pedal and a force-transmitting member (3) which is movable relative to the force-absorbing member (2) and connected to a brake system, wherein the sensor device comprises a Hall sensor (6). arranged on the force receiving member (2) or the power transmission member (3), wherein the Hall sensor (6) opposite permanent magnet (5) or electromagnet on the force transmission member (3) or the force receiving member (2) is arranged, so that a Relative movement between force receiving member (2) and the force transmission member (3) causes a change in the Hall voltage, characterized in that the sensor device comprises at least a second Hall sensor (7), wherein the force receiving member (2) and the force transmission member (3) via a spring arrangement (4 ) are coupled together, wherein the at least two halls are arranged on opposite sides of the permanent magnet (5) or electromagnets (6, 7).
Description
Die Erfindung betrifft eine Vorrichtung und ein Verfahren zum Erfassen einer Betätigungskraft eines Bremspedals.The invention relates to a device and a method for detecting an actuation force of a brake pedal.
Bei vielen Bremssystemen ist es erforderlich, den Bremswunsch des Fahrers eindeutig zu erfassen. Bei gekoppelten Bremssystemen kann der Fahrerwunsch nicht aus dem Weg oder Winkel des Bremspedals errechnet werden. Dies liegt daran, dass bei einer extern angeforderten Bremsung das Bremspedal sich mitbewegt. Der Weg des Pedals ist somit eine Summe aus Fahrerwunsch und externer Anforderung. Daher muss eine Messgröße gefunden werden, die eindeutig nur dem Fahrerwunsch zugeordnet werden kann. Dies ist die Pedalkraft bzw. die vom Bremspedal über die Eingangsstange an den Hauptbremszylinder übertragene Kraft. Dieses Verfahren ist beispielsweise bei einem elektromechanischen Bremskraftverstärker eBKV notwendig.In many brake systems, it is necessary to clearly detect the driver's braking request. In coupled braking systems, the driver's request can not be calculated from the path or angle of the brake pedal. This is because when the brake is requested externally, the brake pedal moves with it. The path of the pedal is thus a sum of driver's request and external requirement. Therefore, a measurement must be found that can be clearly assigned only to the driver's request. This is the pedal force or the force transmitted by the brake pedal via the input rod to the master cylinder. This method is necessary, for example, in an electromechanical brake booster eBKV.
Aus der
Aus der
Der Erfindung liegt das technische Problem zugrunde, eine Vorrichtung und ein Verfahren zum Erfassen einer Betätigungskraft eines Bremspedals zu schaffen, die eine höhere Zuverlässigkeit aufweisen.The invention is based on the technical problem of providing an apparatus and a method for detecting an actuating force of a brake pedal, which have a higher reliability.
Die Lösung des technischen Problems ergibt sich durch die Gegenstände mit den Merkmalen der Patentansprüche 1 und 3. Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.The solution of the technical problem results from the objects with the features of
Die Vorrichtung zum Erfassen einer Betätigungskraft eines Bremspedals umfasst ein mit dem Bremspedal gekoppeltes Kraftaufnahmeglied und ein relativ zu dem Kraftaufnahmeglied bewegbares mit einer Bremsanlage gekoppeltes Kraftübertragungsglied und eine Sensoreinrichtung, wobei die Sensoreinrichtung einen Hallsensor umfasst, der an dem Kraftaufnahmeglied oder dem Kraftübertragungsglied angeordnet ist, wobei ein dem Hallsensor gegenüberliegender Permanentmagnet oder Elektromagnet an dem Kraftübertragungsglied oder dem Kraftaufnahmeglied angeordnet ist, so dass eine Relativbewegung zwischen Kraftaufnahmeglied und dem Kraftübertragungsglied eine Änderung der Hallspannung verursacht, wobei die Sensoreinrichtung mindestens einen zweiten Hallsensor umfasst. Hierdurch wird mit einfachen Mitteln ein teilredundanter Kraftsensor bereitgestellt, der den gesetzlichen Vorschriften genügt. Teilredundant deswegen, da die mechanischen Teile, die vorzugsweise aus Metall sind, einfach ausgeführt sind, wohingegen die elektrischen Komponenten doppelt ausgeführt sind.The device for detecting an actuation force of a brake pedal comprises a force-absorbing member coupled to the brake pedal and a force transmitting member coupled to a braking force transmission member and a sensor device, wherein the sensor means comprises a Hall sensor which is arranged on the force receiving member or the force transmission member, wherein a the permanent magnet or electromagnet opposite the Hall sensor is arranged on the force transmission member or the force receiving member, so that a relative movement between the force receiving member and the force transmission member causes a change in the Hall voltage, wherein the sensor device comprises at least one second Hall sensor. As a result, a partially redundant force sensor is provided by simple means that satisfies the legal requirements. Partial redundant because the mechanical parts, which are preferably made of metal, are simple, whereas the electrical components are made double.
Dabei sind das Kraftaufnahmeglied und das Kraftübertragungsglied über eine Federanordnung miteinander gekoppelt.In this case, the force receiving member and the force transmission member are coupled together via a spring arrangement.
In einer bevorzugten Ausführungsform weisen daher die mindestens zwei Hallsensoren voneinander unabhängige Spannungsversorgungen auf. Alternativ werden die mindestens zwei Hallsensoren zwar von der gleichen Spannungsversorgung gespeist, diese ist jedoch spannungsstabilisiert, beispielsweise mittels eines DC/DC-Wandlers. Allerdings bedeutet sowohl eine zweite Spannungsversorgung als auch eine Spannungsstabilisierung einen konstruktiven Mehraufwand.In a preferred embodiment, therefore, the at least two Hall sensors have mutually independent power supplies. Alternatively, although the at least two Hall sensors are supplied by the same power supply, this is voltage stabilized, for example by means of a DC / DC converter. However, both a second voltage supply and a voltage stabilization means additional design effort.
Weiter sind die mindestens zwei Hallsensoren an gegenüberliegenden Seiten des Permanentmagneten oder Elektromagneten angeordnet, so dass dieser also zwischen den mindestens zwei Hallsensoren liegt. Hierdurch arbeiten die beiden Hallsensoren gegenphasig. Bei Auftreten einer Kraft wird also der Abstand des einen Hallsensors zum Permanentmagneten verkürzt und für den anderen Hallsensor verlängert. Einen linearen Zusammenhang unterstellt, sind die Signaländerungen an den beiden Hallsensoren betragsmäßig gleich groß und weisen aber unterschiedliche Vorzeichen auf. Änderungen der Bordnetzspannung führen bei beiden Hallsensoren hingegen zu einer Signaländerung in die gleiche Richtung und sind somit eindeutig von der kraftbedingten Signaländerung zu unterscheiden. Daher sind getrennte Spannungsversorgungen oder Spannungsstabilisierungen nicht notwendig.Furthermore, the at least two Hall sensors are arranged on opposite sides of the permanent magnet or electromagnet so that it is thus located between the at least two Hall sensors. As a result, the two Hall sensors work in antiphase. When a force occurs so the distance of a Hall sensor to the permanent magnet is shortened and extended for the other Hall sensor. Assuming a linear relationship, the signal changes at the two Hall sensors are equal in magnitude and have different signs. On the other hand, changes in the vehicle electrical system voltage lead to a signal change in the same direction in both Hall sensors and can therefore be clearly distinguished from the force-induced signal change. Therefore, separate power supplies or voltage stabilizations are not necessary.
Die Erfindung wird nachfolgend anhand eines bevorzugten Ausführungsbeispieles näher erläutert. Die einzige Figur zeigt eine schematische Darstellung einer Vorrichtung zum Erfassen einer Betätigungskraft eines Bremspedals.The invention will be explained in more detail with reference to a preferred embodiment. The single figure shows a schematic representation of a device for detecting an operating force of a brake pedal.
Die Vorrichtung
Claims (4)
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DE102007047547.2A DE102007047547B4 (en) | 2007-09-28 | 2007-09-28 | Device and method for detecting an operating force of a brake pedal |
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DE102007047547.2A DE102007047547B4 (en) | 2007-09-28 | 2007-09-28 | Device and method for detecting an operating force of a brake pedal |
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DE102007047547A1 DE102007047547A1 (en) | 2009-04-02 |
DE102007047547B4 true DE102007047547B4 (en) | 2018-02-08 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11597366B2 (en) | 2019-05-09 | 2023-03-07 | Cts Corporation | Vehicle brake pedal with pedal resistance assembly and force/position sensor |
Families Citing this family (5)
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CN103813947A (en) * | 2011-09-22 | 2014-05-21 | 泰科电子公司 | Switch assembly and system |
US8816804B2 (en) | 2011-09-22 | 2014-08-26 | Tyco Electronics Corporation | Switch assembly and system |
CN103091024B (en) * | 2013-01-28 | 2014-08-06 | 成都赛来科技有限公司 | Push-pull force testing device of actuator |
WO2018140359A1 (en) * | 2017-01-24 | 2018-08-02 | Cts Corporation | Position and force sensor assembly for vehicle brake pedal |
DE102019200183A1 (en) | 2018-01-15 | 2019-07-18 | Continental Teves Ag & Co. Ohg | Method for position detection, position detection arrangement and brake system |
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DE3446411A1 (en) * | 1984-12-20 | 1986-07-03 | Wabco Westinghouse Fahrzeugbremsen GmbH, 3000 Hannover | Device for holding a sensor device for detecting the relative position of two parts which can be moved relative to one another |
DE3924327A1 (en) * | 1989-04-29 | 1990-10-31 | Teves Gmbh Alfred | TRAVEL SENSOR FOR MEASURING MECHANICAL MOTION SIZES |
DE10114043A1 (en) * | 2001-03-22 | 2002-06-13 | Bosch Gmbh Robert | Displacement sensor with magneto-electric transducers e.g. for automobile brake pedal, has magnet supported in carrier at angle to displacement direction |
EP1219518A2 (en) * | 2000-12-29 | 2002-07-03 | TRW Automotive Electronics & Components GmbH & Co. KG | A park brake system for vehicles |
US20030041725A1 (en) * | 2001-08-28 | 2003-03-06 | Delphi Technologies, Inc. | Linearizing shunt for a force sensor |
US6564694B2 (en) * | 2001-06-29 | 2003-05-20 | Delphi Technologies, Inc. | Dual hall effect sensor for determining travel |
US6586927B2 (en) * | 2001-08-16 | 2003-07-01 | Delphi Technologies, Inc. | Hall effect position sensing in a powered parking brake system |
DE10315073B4 (en) * | 2003-04-02 | 2007-04-12 | Lucas Automotive Gmbh | Device for detecting an actuating force of a brake pedal in a brake system |
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2007
- 2007-09-28 DE DE102007047547.2A patent/DE102007047547B4/en active Active
Patent Citations (8)
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DE3446411A1 (en) * | 1984-12-20 | 1986-07-03 | Wabco Westinghouse Fahrzeugbremsen GmbH, 3000 Hannover | Device for holding a sensor device for detecting the relative position of two parts which can be moved relative to one another |
DE3924327A1 (en) * | 1989-04-29 | 1990-10-31 | Teves Gmbh Alfred | TRAVEL SENSOR FOR MEASURING MECHANICAL MOTION SIZES |
EP1219518A2 (en) * | 2000-12-29 | 2002-07-03 | TRW Automotive Electronics & Components GmbH & Co. KG | A park brake system for vehicles |
DE10114043A1 (en) * | 2001-03-22 | 2002-06-13 | Bosch Gmbh Robert | Displacement sensor with magneto-electric transducers e.g. for automobile brake pedal, has magnet supported in carrier at angle to displacement direction |
US6564694B2 (en) * | 2001-06-29 | 2003-05-20 | Delphi Technologies, Inc. | Dual hall effect sensor for determining travel |
US6586927B2 (en) * | 2001-08-16 | 2003-07-01 | Delphi Technologies, Inc. | Hall effect position sensing in a powered parking brake system |
US20030041725A1 (en) * | 2001-08-28 | 2003-03-06 | Delphi Technologies, Inc. | Linearizing shunt for a force sensor |
DE10315073B4 (en) * | 2003-04-02 | 2007-04-12 | Lucas Automotive Gmbh | Device for detecting an actuating force of a brake pedal in a brake system |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11891039B2 (en) | 2018-01-22 | 2024-02-06 | Cts Corporation | Vehicle brake pedal with pedal resistance assembly and force/position sensor |
US11597366B2 (en) | 2019-05-09 | 2023-03-07 | Cts Corporation | Vehicle brake pedal with pedal resistance assembly and force/position sensor |
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