DE102004004381B4 - Method for releasing a door brake system - Google Patents

Method for releasing a door brake system

Info

Publication number
DE102004004381B4
DE102004004381B4 DE200410004381 DE102004004381A DE102004004381B4 DE 102004004381 B4 DE102004004381 B4 DE 102004004381B4 DE 200410004381 DE200410004381 DE 200410004381 DE 102004004381 A DE102004004381 A DE 102004004381A DE 102004004381 B4 DE102004004381 B4 DE 102004004381B4
Authority
DE
Germany
Prior art keywords
door
force
brake system
signal
vehicle
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.)
Active
Application number
DE200410004381
Other languages
German (de)
Other versions
DE102004004381A1 (en
Inventor
Christoph Limbach
Georg Schiffer
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Priority to DE200410004381 priority Critical patent/DE102004004381B4/en
Publication of DE102004004381A1 publication Critical patent/DE102004004381A1/en
Application granted granted Critical
Publication of DE102004004381B4 publication Critical patent/DE102004004381B4/en
Application status is Active legal-status Critical
Anticipated expiration legal-status Critical

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05CBOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C17/00Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B77/00Vehicle locks characterised by special functions or purposes
    • E05B77/02Vehicle locks characterised by special functions or purposes for accident situations
    • E05B77/12Automatic locking or unlocking at the moment of collision
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05CBOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C17/00Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith
    • E05C17/003Power-actuated devices for limiting the opening of vehicle doors
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2400/00Electronic control; Power supply; Power or signal transmission; User interfaces
    • E05Y2400/10Electronic control
    • E05Y2400/30Electronic control of motors
    • E05Y2400/32Position control, detection or monitoring
    • E05Y2400/35Position control, detection or monitoring related to specific positions
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2400/00Electronic control; Power supply; Power or signal transmission; User interfaces
    • E05Y2400/80User interfaces
    • E05Y2400/85User input means
    • E05Y2400/852Sensors
    • E05Y2400/856Actuation thereof
    • E05Y2400/858Actuation thereof by body parts
    • E05Y2400/86Actuation thereof by body parts by hand

Abstract

method to release an electric door brake system, which is a vehicle door in an open one Holding position, characterized in that dependent from the time course of a force signal (KS, KS-N, KS-W) on the vehicle door the door brake system solved becomes.

Description

  • The The invention relates to a method for releasing a door brake system according to the preamble of claim 1
  • Door brake systems have long been known in the automotive industry. The US Pat. No. 2,032,600 A describes a mechanical door brake system. Only after overcoming a conditional by the construction of the braking or locking device minimum force, the door can be moved back from the locked position. The disadvantage here is that the door brake system can not distinguish whether it is a deliberate or unwanted door movement.
  • From the DE 35 19 203 C2 a door check is known, which has hydraulic means for continuously locking the pivoting position. In this system, the door brake releases when the inside or outside door handle is actuated. A simple throwing the vehicle door is not possible.
  • From the DE 42 29 412 C1 is a method for determining the braking force of a door hinge axis rotatably mounted motor vehicle door known. Here, the braking force is detected for detecting the vehicle door in response to the door angular velocity. If the door angular velocity is greater than at least almost zero, it is concluded that a door operation has not yet been completed. If the value of the door angular velocity approaches zero, a braking force is exerted. The braking force is activated when the absolute value of the door angular velocity approaches zero. The electric door brake is released when the force acting on the vehicle door has exceeded a predetermined safety braking force. Also in this case, only the absolute value of the force acting on the vehicle door force is taken into account.
  • From the DE 94 11 777 U1 a control for a stepless door check is known in which the state of motion of the vehicle door is detected. The door brake system is released as soon as the speed of the door movement exceeds a predetermined value.
  • task The invention is a simple method for releasing an electric door brake system indicate that between a wanted and unwanted door movement can differentiate.
  • These The object is achieved by a Method according to claim 1 solved. Advantageous developments are the objects the dependent Claims.
  • The inventive method to release an electric door brake system, which is a vehicle door in an open one Holds position, draws characterized by being dependent from the time course of a force signal on the vehicle door, the door brake system solved becomes.
  • The time course of the force signal on the vehicle door is different in a desired door movement as in an unwanted door movement. A desired door movement is usually caused by a person, an unwanted door movement is caused, for example, by wind or a strong inclination of the road. In the case of a desired door movement, the amplitude of the force signal increases very rapidly over time, whereas in contrast, in the event of an unwanted door movement, the amplitude of the force signal changes only slowly over time. This distinguishing feature is suitable to detect a desired door movement and accordingly to solve the electric door brake system. In the evaluation of the time course is in contrast to an absolute value evaluation, as for example. In the DE 42 29 412 C1 is described, a faster distinction between intentional and unwanted door movement possible.
  • Also the temporal course of the speed signal and the temporal Course of the acceleration signal, which are not the subject of the invention, show the already mentioned differences in wanted or unwanted door movement on. This is a quick and easy distinction between a wanted or unwanted door movement possible.
  • Of the Time course of the force signal can be evaluated in various ways become. Advantageously, with a gradient of the force signal, which exceeds a force limit, the electric door brake system solved.
  • Based on the gradient can be easily determined whether it is a deliberate or unwanted door movement. In a desired door movement by a person undergoes the vehicle door at the beginning z. As a rapidly increasing acceleration, which also quickly becomes smaller again, until it goes to zero. In the case of an unwanted door movement, for example due to the wind, the door experiences a relatively slowly increasing acceleration. If the gradient of the acceleration signal exceeds a predetermined acceleration limit value, it can be assumed with very high probability that it is a deliberate door movement by a person delt. The same applies to the speed signal and the force signal underlying the invention or for their gradients.
  • advantageously, becomes the force limit dependent from an opening angle the door and / or given an inclination angle of the vehicle, as, for example, at a almost closed door and a deliberate movement of the door of the acceleration waveform can look different than with a nearly completely open door and a deliberate movement. Even at different angles of inclination of the vehicle due the road inclination the time profile of the force signal can be different. The for determining the opening angle the door necessary sensors are in electromechanical door brakes usually already in the vehicle, resulting in no additional costs attack. Most vehicles also have tilt angle sensors.
  • Instead of a gradient evaluation can also be an evaluation of two amplitude values, recorded at a different but fixed time were done.
  • Becomes the release of the electric door brake system dependent on made by the time course of the force signal is advantageously a Force sensor used, which is mounted near the door brake actuator is.
  • A Combining the evaluation of a time course of the movement characterizing the vehicle door Signal with the evaluation of the time course of the force signal is also possible and offers the advantage of a very accurate and safe distinction between wanted and unwanted door movement.
  • In the drawing is an embodiment of Invention shown. It shows
  • 1 a combination of the evaluation of the time profile of the signal characterizing the movement of the vehicle door with the evaluation of the time profile of the force signal on which the invention is based,
  • 2 two temporal courses of an acceleration signal and
  • 3 two temporal courses of a force signal.
  • The 1 shows a schematic flow diagram of a combination of the evaluation of the time course of the movement of the vehicle door characterizing signal with the invention underlying evaluation of the time course of the force signal to release an electric door brake system, which holds a vehicle door in an open position. The electric door brake system is released depending on the time course of an acceleration signal BS or a speed signal GS or according to the invention of the time course of a force signal KS. The acceleration signal BS or the speed signal GS is calculated, for example, from a path signal WS by a one-time time derivative d / dt or by a time derivation d / dt · d / dt twice. The displacement sensor which supplies the path signal WS is installed in the vicinity of the vehicle door pivot point. The force signal KS is determined, for example, by means of a force sensor.
  • from Acceleration signal BS and the speed signal GS is in a first gradient unit G1, the gradient of the acceleration signal BSG or the gradient of the speed signal GSG calculated. From the force signal KS we in a second gradient G2 the Gradient of the force signal KSG calculated.
  • Subsequently, will in a first limit decision gwb / gwg checks whether the gradient of the acceleration signal BSG an acceleration limit GWB or the gradient of the speed signal GSG exceeds a speed limit GWG. Likewise, in one second limit decision gwk checks whether, the gradient of the force signal KSG exceeds a force limit GWK. The acceleration limit GWB, the speed limit GWG and the force limit value GWK is dependent on a control unit SG an opening angle ÖW the door and / or an inclination angle NW of the vehicle specified.
  • through an OR gate OR is then a signal S to release the electric door brake system emitted when either the gradient of the acceleration signal BSG the acceleration limit GWB or the gradient of the speed signal GSG the speed limit GWG or - according to the invention - the gradient of the force sensor KSG has exceeded the force limit value GWK (= j). Instead of OR gates OR would be also an AND gate AND suitable.
  • 2 shows two temporal courses of an acceleration signal, over the time t, the acceleration B is plotted.
  • The acceleration signal BS-N represents a possible signal course which occurs when a user wishes to move the door could. At the beginning, ie at the time t 0 , the acceleration B increases very rapidly to a maximum. Subsequently, the acceleration B is again reduced very rapidly in the case of the acceleration signal BS-N caused by the user until the acceleration B decays slowly from a time t 0 + Δt 1 .
  • in the In contrast, the acceleration signal BS-W makes a possible Waveform is the case of an unwanted door movement, the example. By Wind or the inclination of the vehicle is generated, could occur. in this connection acceleration B only increases very slowly.
  • To evaluate the time course, either the gradient of the acceleration signal BS-N or BS-W can be used. From the 2 It can be seen that the gradient of the acceleration signal BS-N from the user assumes a substantially greater value than the gradient of the acceleration signal BS-W from the wind.
  • 3 shows two temporal courses of a force signal, over the time t, the force acting on the vehicle door force F is plotted.
  • The force signal KS-N represents a possible signal curve that could occur when a user wishes to move the door. At the beginning, that is to say at the instant t 0 , the force F increases very rapidly up to a maximum. Subsequently, the force F is again reduced very rapidly in the force signal KS-N caused by the user until the force F slowly decays from a time t 0 + Δt 1 . In contrast, the force signal KS-W is a possible waveform that could occur in an unwanted door movement, for example, generated by wind or the inclination of the vehicle. Here, the force F increases only very slowly.
  • The inventive method Can also be used in conjunction with other vehicle systems become. So it makes sense, for example, that the process also an unwanted Door movement, the z. B. is triggered by a thief, recognizes, and accordingly the electric door brake is not solved. Here is the electric door brake system for the inventive method coupled with an anti-theft alarm system. Is the theft alarm system Active, the electric door brake system can not solved become.
  • Exactly behaves differently the system for the inventive method when an accident, for example, is detected by means of a crash sensor. If this is the case, the electric door brake system should be easy to solve or solve themselves automatically.
  • It can a variety of other details quite different from the above description be designed without departing from the content of the claims.

Claims (4)

  1. Method for releasing an electric door brake system, which holds a vehicle door in an open position, characterized in that, depending on the time course of a force signal (KS, KS-N, KS-W) on the vehicle door, the door brake system is released.
  2. Method according to claim 1, characterized that at a gradient of the force signal (KSG), which exceeds a force limit value (GWK), the door brake system solved becomes.
  3. Method according to claim 2, characterized that the force limit (GWK) depends on an opening angle (ÖW) the Door and / or an inclination angle (NW) of the vehicle is specified.
  4. Method according to one of the preceding claims, characterized characterized in that the time course of the force signal means a force sensor is determined.
DE200410004381 2004-01-29 2004-01-29 Method for releasing a door brake system Active DE102004004381B4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE200410004381 DE102004004381B4 (en) 2004-01-29 2004-01-29 Method for releasing a door brake system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200410004381 DE102004004381B4 (en) 2004-01-29 2004-01-29 Method for releasing a door brake system

Publications (2)

Publication Number Publication Date
DE102004004381A1 DE102004004381A1 (en) 2005-08-25
DE102004004381B4 true DE102004004381B4 (en) 2006-07-27

Family

ID=34801168

Family Applications (1)

Application Number Title Priority Date Filing Date
DE200410004381 Active DE102004004381B4 (en) 2004-01-29 2004-01-29 Method for releasing a door brake system

Country Status (1)

Country Link
DE (1) DE102004004381B4 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013014845A1 (en) * 2013-09-05 2015-03-05 Erik Braden Device for controlling the movement of a second element movably arranged in relation to a first element and method for operating such a device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2032600A (en) * 1934-11-02 1936-03-03 Smith Frank Allison Vehicle door check
DE3519203C2 (en) * 1985-01-19 1988-11-03 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart, De
DE4229412C1 (en) * 1992-09-03 1993-10-21 Bayerische Motoren Werke Ag Braking force evaluation method for hinged vehicle door - uses sensor signals to calculate brake force when detected door opening velocity approximates to zero
DE9411777U1 (en) * 1994-07-21 1995-11-23 Scharwaechter Gmbh Co Kg Controller for a continuously variable door check

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2032600A (en) * 1934-11-02 1936-03-03 Smith Frank Allison Vehicle door check
DE3519203C2 (en) * 1985-01-19 1988-11-03 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart, De
DE4229412C1 (en) * 1992-09-03 1993-10-21 Bayerische Motoren Werke Ag Braking force evaluation method for hinged vehicle door - uses sensor signals to calculate brake force when detected door opening velocity approximates to zero
DE9411777U1 (en) * 1994-07-21 1995-11-23 Scharwaechter Gmbh Co Kg Controller for a continuously variable door check

Also Published As

Publication number Publication date
DE102004004381A1 (en) 2005-08-25

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