EP1096093A2 - Obstruction detection for a window - Google Patents
Obstruction detection for a window Download PDFInfo
- Publication number
- EP1096093A2 EP1096093A2 EP00203488A EP00203488A EP1096093A2 EP 1096093 A2 EP1096093 A2 EP 1096093A2 EP 00203488 A EP00203488 A EP 00203488A EP 00203488 A EP00203488 A EP 00203488A EP 1096093 A2 EP1096093 A2 EP 1096093A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- window
- waveguide
- high frequency
- closing
- evanescent field
- 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
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 10
- 238000012544 monitoring process Methods 0.000 claims abstract description 5
- 230000001419 dependent effect Effects 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/40—Safety devices, e.g. detection of obstructions or end positions
- E05F15/42—Detection using safety edges
- E05F15/43—Detection using safety edges responsive to disruption of energy beams, e.g. light or sound
- E05F15/431—Detection using safety edges responsive to disruption of energy beams, e.g. light or sound specially adapted for vehicle windows or roofs
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
- E05Y2900/53—Type of wing
- E05Y2900/55—Windows
Definitions
- the present invention relates to a system for an electrically operated window which can detect the presence of an obstruction in the path of the window during closing, and which can stop the window.
- the present invention has particular application for use with an electrically operated window in a motor vehicle.
- a known obstruction detection system monitors the torque developed by the electric motor which drives the window, and, on detection of increased torque, assumes that an obstruction is preventing closing of the window. The system then stops the electric motor, and, in some cases, reverses the electric motor to open the window.
- a system in accordance with the present invention for the detection of an obstruction in the path of a closing window which is movable by an electric motor and which has an edge receivable in a portion of a window frame on closing of the window comprises a dielectric waveguide mountable on the portion of the window frame; a high frequency transmitter connected to one end of the waveguide for transmitting a high frequency signal into the waveguide to produce an evanescent field; a high frequency receiver connected to the other end of the waveguide for receiving the evanescent field; and a control unit for monitoring the evanescent field received by the receiver, the control unit being connectable to the electric motor to control the operation of the motor dependent on the signal received by the receiver.
- the present invention also includes a method of detecting an obstruction in the path of a closing window.
- the upper portion 10 of a window frame 12 is shown, along with a window 14 which is moved by an electric motor 16.
- the upper portion 10 of the window frame 12 is substantially U-shaped in cross-section.
- the window 14 is mounted on a support system (not shown) and can be raised and lowered by the electric motor 16.
- the upper edge 18 of the window is positioned inside the upper portion 10 of the window frame 12.
- the obstruction detection system 20 in accordance with the present invention comprises a dielectric waveguide 22, high frequency transmitter 24, a high frequency receiver 26, and a control unit 28.
- the waveguide 22 mounted on the upper portion 10 of the window frame 12.
- the transmitter 24 is positioned at one end 30 of the waveguide 22.
- the receiver 26 is positioned at the other end 32 of waveguide 22.
- the transmitter 24 and the receiver 26 are connected to the control unit 28, which is also connected to the electric motor 16.
- the transmitter 24 transmits a high frequency signal along the waveguide 22, which produces a leaky or evanescent field, to the receiver 26.
- the control unit 28 monitors the receiver 26. If an obstruction is present between the upper edge 18 of the window 14 and the upper part 10 of the window frame 12, the evanescent field produced by the transmitter 24 is damped. If the receiver 26 indicates no damping of the evanescent field, then the control unit 28 notes that there is no obstruction between the upper edge 18 of the window 14 and the upper part 10 of the window frame 12 and allows the window to close.
- the control unit 28 monitors that an obstruction is present, and stops operation of the electric motor 16 to prevent closing of the window 14. If required, in the latter case, the control unit 28 may cause the electric motor 16 to reverse to move the window 14 in an opening direction.
- high frequency signal is meant a signal in the range 2.45 to 25 GHz, and preferably in the range 22 to 25 GHz.
- the present invention provides a low cost obstruction detection system which has the benefits of easier installation when compared to previously known systems which monitor electric motor torque.
Landscapes
- Power-Operated Mechanisms For Wings (AREA)
- Window Of Vehicle (AREA)
- Geophysics And Detection Of Objects (AREA)
- Burglar Alarm Systems (AREA)
- Glass Compositions (AREA)
Abstract
Description
- The present invention relates to a system for an electrically operated window which can detect the presence of an obstruction in the path of the window during closing, and which can stop the window. The present invention has particular application for use with an electrically operated window in a motor vehicle.
- Electrically operated windows, especially in motor vehicles, are well known. During closing of the window, there is a risk that an object, such as a person's hand, may become trapped between the window and the frame. A known obstruction detection system monitors the torque developed by the electric motor which drives the window, and, on detection of increased torque, assumes that an obstruction is preventing closing of the window. The system then stops the electric motor, and, in some cases, reverses the electric motor to open the window.
- It is an object of the present invention to provide an alternative system for obstruction detection for a closing window.
- A system in accordance with the present invention for the detection of an obstruction in the path of a closing window which is movable by an electric motor and which has an edge receivable in a portion of a window frame on closing of the window, comprises a dielectric waveguide mountable on the portion of the window frame; a high frequency transmitter connected to one end of the waveguide for transmitting a high frequency signal into the waveguide to produce an evanescent field; a high frequency receiver connected to the other end of the waveguide for receiving the evanescent field; and a control unit for monitoring the evanescent field received by the receiver, the control unit being connectable to the electric motor to control the operation of the motor dependent on the signal received by the receiver.
- The present invention also includes a method of detecting an obstruction in the path of a closing window.
- The present invention will now be described, by way of example, with reference to the accompanying drawings, in which:-
- Figure 1 is a perspective view of a window and upper frame having an obstruction detection system in accordance with the present invention.
-
- Referring to the drawing, the
upper portion 10 of awindow frame 12 is shown, along with awindow 14 which is moved by anelectric motor 16. In general, theupper portion 10 of thewindow frame 12 is substantially U-shaped in cross-section. Thewindow 14 is mounted on a support system (not shown) and can be raised and lowered by theelectric motor 16. In the fully closed position of thewindow 14, theupper edge 18 of the window is positioned inside theupper portion 10 of thewindow frame 12. Such an arrangement is well known (and has particular use in motor vehicles) to those skilled in the art, and will not be described in further detail. - The
obstruction detection system 20 in accordance with the present invention comprises adielectric waveguide 22,high frequency transmitter 24, ahigh frequency receiver 26, and acontrol unit 28. Thewaveguide 22 mounted on theupper portion 10 of thewindow frame 12. Thetransmitter 24 is positioned at oneend 30 of thewaveguide 22. Thereceiver 26 is positioned at theother end 32 ofwaveguide 22. Thetransmitter 24 and thereceiver 26 are connected to thecontrol unit 28, which is also connected to theelectric motor 16. - At least during closing of the
window 14 by theelectric motor 16, thetransmitter 24 transmits a high frequency signal along thewaveguide 22, which produces a leaky or evanescent field, to thereceiver 26. Thecontrol unit 28 monitors thereceiver 26. If an obstruction is present between theupper edge 18 of thewindow 14 and theupper part 10 of thewindow frame 12, the evanescent field produced by thetransmitter 24 is damped. If thereceiver 26 indicates no damping of the evanescent field, then thecontrol unit 28 notes that there is no obstruction between theupper edge 18 of thewindow 14 and theupper part 10 of thewindow frame 12 and allows the window to close. If, however, thereceiver 26 indicates that the evanescent field has been damped, then thecontrol unit 28 monitors that an obstruction is present, and stops operation of theelectric motor 16 to prevent closing of thewindow 14. If required, in the latter case, thecontrol unit 28 may cause theelectric motor 16 to reverse to move thewindow 14 in an opening direction. - By high frequency signal is meant a signal in the range 2.45 to 25 GHz, and preferably in the
range 22 to 25 GHz. - The present invention provides a low cost obstruction detection system which has the benefits of easier installation when compared to previously known systems which monitor electric motor torque.
Claims (4)
- A system (20) for the detection of an obstruction in the path of a closing window (14) which is movable by an electric motor (16) and which has an edge (18) receivable in a portion (10) of a window frame (12) on closing of the window, the system comprising a dielectric waveguide (22) mountable on the portion of the window frame; a high frequency transmitter (24) connected to one end (30) of the waveguide for transmitting a high frequency signal into the waveguide to produce an evanescent field; a high frequency receiver (26) connected to the other end (32) of the waveguide for receiving the evanescent field; and a control unit (28) for monitoring the evanescent field received by the receiver, the control unit being connectable to the electric motor to control the operation of the motor dependent on the signal received by the receiver.
- A system as claimed in Claim 1, wherein the transmitter (24) transmits the high frequency signal along the waveguide (22) only during closing of the window (14).
- A method of detecting an obstruction in the path of a closing window (14) comprising the steps of transmitting a high frequency signal along a waveguide (22) mountable on a portion (10) of a window frame (12) which receives an edge (18) of the window on closing of the window; monitoring the evanescent field produced by the waveguide due to the high frequency signal transmitted along the waveguide; and stopping the closing of the window when the monitored evanescent field is damped.
- A method as claimed in Claim 3, comprising the additional step of moving the window in an opening direction on monitoring damping of the evanescent field.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9925303 | 1999-10-27 | ||
GB9925303A GB2355760B (en) | 1999-10-27 | 1999-10-27 | Obstruction detection for a window |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1096093A2 true EP1096093A2 (en) | 2001-05-02 |
EP1096093A3 EP1096093A3 (en) | 2004-04-14 |
EP1096093B1 EP1096093B1 (en) | 2007-05-30 |
Family
ID=10863396
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00203488A Expired - Lifetime EP1096093B1 (en) | 1999-10-27 | 2000-10-08 | Obstruction detection for a window |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1096093B1 (en) |
AT (1) | ATE363577T1 (en) |
DE (1) | DE60035014T2 (en) |
GB (1) | GB2355760B (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202004014758U1 (en) * | 2004-09-20 | 2005-11-10 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg | Unit for controlling an actuating device in a motor vehicle is based on detection of an obstruction, and comprises a light guide, a surface wave sender-receiver, and a light source |
WO2006079322A1 (en) * | 2005-01-29 | 2006-08-03 | Conti Temic Microelectronic Gmbh | Method and device for monitoring an adjusting device comprising an actuator |
DE202005014446U1 (en) * | 2005-09-12 | 2007-02-01 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg | Sensor system for sensing clamp of body part or object by movement of adjustable part of adjusting device in motor vehicle, has transceiver arrangement whereby transceiver arrangement is interconnected with wave guide |
WO2007076854A1 (en) * | 2006-01-05 | 2007-07-12 | Igs Development Gmbh | Device for detecting obstructions |
US7692125B1 (en) * | 2005-11-29 | 2010-04-06 | Lockheed Martin Corporation | Evanescent wave coupling for Fresnel direction finding |
DE102017223627A1 (en) | 2017-12-21 | 2019-06-27 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Bamberg | Method for controlling a function relating to a vehicle access of a motor vehicle |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2493157A (en) * | 1947-12-10 | 1950-01-03 | Charles N Merralls | Treadle switch |
US5424745A (en) * | 1992-04-29 | 1995-06-13 | Ccoms Sprl | Detection method and system |
WO1997006518A1 (en) * | 1995-08-03 | 1997-02-20 | The Regents Of The University Of California | Window-closing safety system |
US5621290A (en) * | 1993-10-18 | 1997-04-15 | Draftex Industries Limited | Movable-window safety device |
US5907213A (en) * | 1996-10-30 | 1999-05-25 | Measurement Specialties, Inc. | Piezoelectric cable and wire harness using the same |
-
1999
- 1999-10-27 GB GB9925303A patent/GB2355760B/en not_active Expired - Lifetime
-
2000
- 2000-10-08 DE DE60035014T patent/DE60035014T2/en not_active Expired - Fee Related
- 2000-10-08 AT AT00203488T patent/ATE363577T1/en not_active IP Right Cessation
- 2000-10-08 EP EP00203488A patent/EP1096093B1/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2493157A (en) * | 1947-12-10 | 1950-01-03 | Charles N Merralls | Treadle switch |
US5424745A (en) * | 1992-04-29 | 1995-06-13 | Ccoms Sprl | Detection method and system |
US5621290A (en) * | 1993-10-18 | 1997-04-15 | Draftex Industries Limited | Movable-window safety device |
WO1997006518A1 (en) * | 1995-08-03 | 1997-02-20 | The Regents Of The University Of California | Window-closing safety system |
US5907213A (en) * | 1996-10-30 | 1999-05-25 | Measurement Specialties, Inc. | Piezoelectric cable and wire harness using the same |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202004014758U1 (en) * | 2004-09-20 | 2005-11-10 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg | Unit for controlling an actuating device in a motor vehicle is based on detection of an obstruction, and comprises a light guide, a surface wave sender-receiver, and a light source |
WO2006079322A1 (en) * | 2005-01-29 | 2006-08-03 | Conti Temic Microelectronic Gmbh | Method and device for monitoring an adjusting device comprising an actuator |
DE202005014446U1 (en) * | 2005-09-12 | 2007-02-01 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg | Sensor system for sensing clamp of body part or object by movement of adjustable part of adjusting device in motor vehicle, has transceiver arrangement whereby transceiver arrangement is interconnected with wave guide |
US7692125B1 (en) * | 2005-11-29 | 2010-04-06 | Lockheed Martin Corporation | Evanescent wave coupling for Fresnel direction finding |
WO2007076854A1 (en) * | 2006-01-05 | 2007-07-12 | Igs Development Gmbh | Device for detecting obstructions |
DE102017223627A1 (en) | 2017-12-21 | 2019-06-27 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Bamberg | Method for controlling a function relating to a vehicle access of a motor vehicle |
Also Published As
Publication number | Publication date |
---|---|
GB2355760B (en) | 2003-04-09 |
EP1096093A3 (en) | 2004-04-14 |
DE60035014D1 (en) | 2007-07-12 |
ATE363577T1 (en) | 2007-06-15 |
EP1096093B1 (en) | 2007-05-30 |
GB2355760A (en) | 2001-05-02 |
DE60035014T2 (en) | 2008-01-24 |
GB9925303D0 (en) | 1999-12-29 |
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