WO2022214229A1 - Detektion und vermeidung eines einklemmereignisses - Google Patents
Detektion und vermeidung eines einklemmereignisses Download PDFInfo
- Publication number
- WO2022214229A1 WO2022214229A1 PCT/EP2022/052949 EP2022052949W WO2022214229A1 WO 2022214229 A1 WO2022214229 A1 WO 2022214229A1 EP 2022052949 W EP2022052949 W EP 2022052949W WO 2022214229 A1 WO2022214229 A1 WO 2022214229A1
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- WO
- WIPO (PCT)
- Prior art keywords
- sensor electrode
- reference sensor
- control unit
- vehicle
- electrical
- Prior art date
Links
- 238000000034 method Methods 0.000 claims abstract description 52
- 230000008569 process Effects 0.000 claims abstract description 23
- 238000007599 discharging Methods 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 33
- 238000009826 distribution Methods 0.000 claims description 14
- 239000004020 conductor Substances 0.000 claims description 9
- 239000003990 capacitor Substances 0.000 claims description 6
- 238000010292 electrical insulation Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 description 12
- 230000003993 interaction Effects 0.000 description 9
- 230000008859 change Effects 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000003566 sealing material Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000004043 responsiveness Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 229920001821 foam rubber Polymers 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
Classifications
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- 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
- E05F15/44—Detection using safety edges responsive to changes in electrical conductivity
-
- 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
- E05F15/44—Detection using safety edges responsive to changes in electrical conductivity
- E05F15/443—Detection using safety edges responsive to changes in electrical conductivity 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
- E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
- E05Y2400/10—Electronic control
- E05Y2400/52—Safety arrangements associated with the wing motor
- E05Y2400/53—Wing impact prevention or reduction
- E05Y2400/54—Obstruction or resistance detection
-
- 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
- E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
- E05Y2400/10—Electronic control
- E05Y2400/52—Safety arrangements associated with the wing motor
- E05Y2400/53—Wing impact prevention or reduction
- E05Y2400/54—Obstruction or resistance detection
- E05Y2400/58—Sensitivity setting or adjustment
-
- 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
-
- 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 invention relates to a device for detecting a pinching event in a motor-operated locking system of a vehicle according to the preamble of claim 1.
- the invention further relates to a method for operating such a device and a device for avoiding a trapping event in a motor-actuated locking system of a vehicle.
- DE 102020 002 817 A1 discloses a device for avoiding a trapping event in a motor-actuated locking system of a vehicle.
- the device comprises a sensor electrode, which at least partially surrounds an opening of the vehicle that can be closed by means of a closure element.
- the device also includes a microcontroller, a measuring pin coupled to the microcontroller and the sensor electrode, and a control pin coupled to the microcontroller and to the sensor electrode via a high-impedance electrical resistor.
- the microcontroller is designed to apply an electrical potential to the sensor electrode via the control pin and at the same time to measure the electrical potential of the sensor electrode and a distribution of negative charges on the sensor electrode at the measuring pin.
- the microcontroller applies an electrical ground potential to the control pin so that charges flow back from the sensor electrode. Furthermore, the microcontroller is designed to record a period of time from when the threshold value is reached to a minimum threshold value of the electrical potential caused by the return flow of the charges being reached, and if the recorded period of time deviates from a predetermined or in to infer an imminent pinching event from a standard time period recorded in a state detected without an imminent pinching event.
- DE 102004002415 A1 discloses a device for controlling and monitoring an electrically driven window pane of a motor vehicle that can be moved between an open position and a closed position.
- the device includes a sensor that includes a sensor electrode that generates an electric field in an opening area of the closure member.
- the device further comprises a control unit connected to the sensor, which detects a change in a capacitance of the sensor electrode and provides a control signal, the control unit detecting a capacitive change in the sensor electrode due to the presence of a layer of moisture on the closing element.
- EP 1 154 110 A2 describes an anti-trap device for detecting the presence of an object in a scanning area.
- the anti-pinch device includes a body portion, a ground electrode embedded in the body portion, and a sensor electrode spaced apart from the ground electrode and embedded in the body portion. The sensor electrode and the ground electrode are charged to different electrical potentials.
- the body portion is made of an electrically non-conductive material to insulate the sensor electrode with respect to the ground electrode.
- the anti-pinch device further includes a zone of reduced stiffness provided between the ground electrode and the sensor electrode, the zone of reduced stiffness being disposed in the body portion and being coextruded with the body portion.
- the rigidity-reduced zone is provided in the form of an air gap in the body portion or in the form of a material having higher elasticity than that of the body portion, the material having higher elasticity being made of foam rubber.
- the body portion includes an electrically conductive area surrounding the sensor electrode and an electrically conductive area surrounding the ground electrode.
- the anti-pinch device includes a device for generating input signals that are applied to the sensor electrode and for receiving output signals from the sensor electrode.
- the device is capable of receiving both output signals, the output signals changing depending on a capacitance change between the sensor electrode and the ground electrode in the case of the presence of a dielectric object in the sensing area, and the output signals changing depending on a capacitance change between the sensor electrode and the Ground electrode in the case of the presence of a non-conductive object due to a Changing the mutual position of the sensor electrode and the ground electrode.
- the invention is based on the object of specifying an improved device for detecting a trapping event in a motor-actuated locking system of a vehicle compared to the prior art, an improved method for operating such a device and an improved device for avoiding a trapping event in a motor-actuated locking system of a vehicle .
- a device for detecting a pinching event of a motor-actuated locking system of a vehicle comprises a sensor electrode, which at least partially surrounds an opening of the vehicle that can be closed by means of at least one locking element.
- the sensor electrode is arranged in a sealing element that at least partially surrounds the opening.
- a reference sensor electrode which surrounds the opening of the vehicle at least in sections, the reference sensor electrode being arranged at a distance from the sensor electrode in the sealing element and being at a greater distance from the opening than the sensor electrode.
- a control unit is provided, which is designed to apply an electrical potential for a charging process and a ground potential for a discharging process to the sensor electrode and the reference sensor electrode in each case, and each cause a time period until a return flow of charges above the ground potential is reached minimum threshold of the electrical potential for the sensor electrode and the reference sensor electrode to detect.
- the control unit is further designed to determine a difference between the time period recorded for the sensor electrode and the time period recorded for the reference sensor electrode and then, if the difference exceeds a predetermined threshold value and if the time period recorded for the sensor electrode changes from a predetermined one or in one without immediately imminent trapping event detected state detected standard time period deviates to close to an imminent trapping event.
- the device is intended, for example, for use in a vehicle for detecting a trapping event between the closing element and a vehicle structure which at least partially surrounds the closing element at the edge.
- this is a motor-operated window pane and a vehicle structure surrounding a window opening at least partially at the edge, or a motor-operated vehicle door and a vehicle structure at least partially surrounding the edge of the vehicle door.
- preventive anti-jamming protection can be implemented, which enables a reaction without the occurrence of a jamming force.
- the future safety requirement FMVSS-118 can be met.
- the device can be realized with a particularly low expenditure on material and costs. In this case, the detection takes place without contact and without contact and is designed to be particularly robust.
- One The detection range is, for example, 0.5 cm to 5 cm.
- the present device allows the use of lower threshold values with, at the same time, a high level of robustness in relation to erroneous detections. It is thus possible to react to smaller difference values, which advantageously results in increased sensitivity of the device, reduced inertia when detecting a trapping event and a reduction in the number of erroneous detections.
- a distinction can also be made between local interactions in the pinching area, which primarily affect one of the electrodes, and an interaction due to external influences, which affect both electrodes, for example interactions of the sensor electrode with the charge distribution of the vehicle body and external electric and magnetic fields.
- control unit is also designed to carry out the charging process and the discharging process for the sensor electrode and the reference sensor electrode periodically offset in such a way that the charging process and discharging process of the sensor electrode start after the charging process and discharging process of the reference sensor electrode or be done in reverse.
- one of the two electrodes is always inactive, so that a mutual influencing of the electrodes when measuring the measured value can be avoided effectively and easily.
- the sensor electrode is arranged in an inner sealing lip of the sealing element and the reference sensor electrode is arranged in an outer sealing lip of the sealing element.
- control unit and the sensor electrode are coupled to a first measuring pin and the control unit and the reference sensor electrode are coupled to a second measuring pin. Furthermore, the control unit is coupled to a first control pin and the sensor electrode is coupled to the first control pin via a high-impedance electrical resistor, and the control unit is coupled to a second control pin and the reference sensor electrode is coupled to the second control pin via a high-impedance electrical resistor.
- the control unit is designed to apply the respective electrical potential to the sensor electrode and the reference sensor electrode via the first control pin and the second control pin, to simultaneously measure the electrical potential of the sensor electrode and a distribution of negative charges on the sensor electrode at the first measuring pin and at the second Measuring pin to simultaneously measure the electric potential of the reference sensor electrode and a distribution of negative charges on the reference sensor electrode.
- the control unit is designed to apply the electrical ground potential to the control pins, so that the charges flow back from the sensor electrode and the reference sensor electrode, and the respective period of time from reaching the To detect a threshold value until a minimum threshold value of the electrical potential for the sensor electrode and the reference sensor electrode, caused by the return flow of the charges, is reached.
- This configuration is characterized by an easy-to-implement structure, a reliable operation as well as great robustness against disturbances and can be implemented with low material and cost expenditure.
- the sensor electrode and the reference sensor electrode are each coupled to ground potential via an electrical capacitor.
- the sensor electrode and the reference sensor electrode are designed as sensor cables with an electrical conductor and electrical insulation surrounding it. This enables a particularly simple, long-lasting and cost-effective design of the sensor electrode and reference sensor electrode. Furthermore, a simple integration of the two electrodes into the sealing element is thus possible.
- a shielding electrode for shielding the sensor electrode and the reference sensor electrode from disturbances that occur is arranged in a vehicle frame element or vehicle roof pillar that at least partially surrounds the opening.
- the shielding electrode makes it possible to shield against interference occurring on a side facing away from the measuring area and, as a result, to achieve insensitivity of the device to interference.
- control unit is also designed to conclude that an imminent pinching event is imminent if, when the closing movement of the closing element is activated, the closing element is also located in a predetermined critical area. False triggering of an anti-trapping device can thus be avoided, in particular when an object that is trapped is moved out of a region between the closure element and the vehicle structure surrounding it during the closing movement of the closure element.
- the electrical potential is used for the charging process and the ground potential is used for the discharging process, respectively at the sensor electrode and the reference sensor electrode applied and a time period is recorded in each case until a minimum threshold value of the electrical potential for the sensor electrode and the reference sensor electrode is reached, caused by the return flow of the charges via the ground potential. Furthermore, a difference between the time period recorded for the sensor electrode and the time period recorded for the reference sensor electrode is determined and then when the difference exceeds a predetermined threshold value and when the time period recorded for the sensor electrode changes from a predetermined one or in one recorded without an imminent pinching event State detected standard period of time deviates, is closed to an imminent trapping event.
- the method Due to the use of the reference sensor electrode to determine the environmental properties and, as a result, a robust baseline, the method enables the use of lower threshold values and at the same time leads to a high level of robustness against false detections. It is thus possible to react to smaller difference values, which advantageously results in increased sensitivity of the method, reduced inertia when detecting a trapping event and a reduction in the number of erroneous detections.
- a distinction can also be made between local interactions in the pinching area, which primarily affect one of the electrodes, and an interaction due to external influences, which affect both electrodes, for example interactions of the sensor electrode with the charge distribution of the vehicle body and external electric and magnetic fields. That is, there is a possibility of distinguishing between local and global events.
- the device according to the invention for avoiding a trapping event of a motor-actuated locking system of a vehicle comprises an aforementioned device for detecting a trapping event and at least one control unit for controlling a motor drive of the locking element, wherein the control unit is designed to initiate a closing movement of the locking element if an imminent trapping event is present stop and/or reverse.
- the device enables a particularly reliable avoidance of trapping events while at the same time minimizing false detections and false triggering.
- FIG. 1 shows a schematic electrical circuit diagram of a device for detecting a pinching event in a motor-actuated locking system of a vehicle
- Fig. 2 schematically shows a section of a side view of a vehicle
- Fig. 3 is a schematic perspective view of a sectional view of a
- Fig. 4 shows a schematic perspective view of a sectional representation of a section of a vehicle door in the area of a sealing element
- FIG. 5 shows a schematic flowchart of a possible exemplary embodiment of a method for detecting a pinching event in a motor-actuated locking system of a vehicle
- FIG. 6 schematically shows a flowchart of a possible exemplary embodiment of a method for avoiding a trapping event in a motor-actuated locking system of a vehicle
- FIG. 7 schematically shows a vehicle door with a window opening and a window pane.
- FIG. 1 shows an electrical circuit diagram of a possible exemplary embodiment of a device 1 for detecting a pinching event in a motor-operated locking system of a vehicle 2 shown in more detail in FIG.
- Device 1 includes a sensor electrode 3, which at least partially surrounds an opening O (shown in FIG. 2) of vehicle 2 that can be closed by means of at least one closure element 4 (shown in FIG. 7).
- the sensor electrode 3 has a length of more than 0.1 m up to 5 m, for example.
- the device 1 also includes a reference sensor electrode 15, which also surrounds the closable opening O of the vehicle 2 at least in sections at the edge. In this case, the reference sensor electrode 15 is arranged at a greater distance from the opening O than the sensor electrode 3 .
- the sensor electrode 3 and the reference sensor electrode 15 are arranged together in a sealing element 10 which at least partially surrounds the opening O and is illustrated in more detail in FIGS.
- the device 1 also includes a control unit 5, for example a microcontroller, a measuring pin 6 coupled to the control unit 5 and the sensor electrode 3, and a control pin 8 coupled to the control unit 5 and via a high-impedance electrical resistor 7 to the sensor electrode 3.
- a control unit 5 for example a microcontroller
- measuring pin 6 coupled to the control unit 5 and the sensor electrode 3
- control pin 8 coupled to the control unit 5 and via a high-impedance electrical resistor 7 to the sensor electrode 3.
- Device 1 also includes a measuring pin 16 coupled to control unit 5 and reference sensor electrode 15, and a control pin 18 coupled to control unit 5 and via a high-impedance electrical resistor 17 to reference sensor electrode 15.
- the sensor electrode 3 and the reference sensor electrode 15 can each be coupled to a ground potential GND of the vehicle 2 via an electrical capacitor 9, 19.
- the capacitors 9, 19 can be omitted.
- the sensor electrode 3 and the reference sensor electrode 15 are each designed as a sensor cable with an electrical conductor 3.1, 15.1 and an electrical insulation 3.2, 15.2 surrounding it.
- the electrical conductors 3.1, 15.1 are designed, for example, as copper conductors and the electrical insulation 3.2, 15.2, for example, as plastic or rubber insulation.
- the sensor cables each have a diameter of 0.5 mm to 2 mm, for example.
- the sensor electrode 3 and the reference sensor electrode 15 are of identical design for better comparability using measurement results recorded by them.
- the control unit 5 is designed to apply an electrical potential to the sensor electrode 3 via the control pin 8 and at the same time to measure the electrical potential of the sensor electrode 3 and a resulting distribution of negative charges on the sensor electrode 3 at the measuring pin 6 .
- the control unit 5 applies the electrical ground potential GND to the control pin 8, so that negative charges and positive charges flow back from the sensor electrode 3.
- the control unit 5 detects a period of time from when the threshold value is reached until a minimum threshold value of the electrical potential, which is caused by the return flow of the charges, is reached.
- control unit 5 is designed to apply an electrical potential to the reference sensor electrode 15 via the control pin 18 analogously to the procedure on the sensor electrode 3 and at the same time to apply the electrical potential of the reference sensor electrode 15 to the measuring pin 16 and a resulting distribution of negative charges of the reference sensor electrode 15 to measure.
- control unit 5 applies electrical ground potential GND to control pin 18, so that negative charges and positive charges flow back from reference sensor electrode 15.
- the control unit 5 detects a period of time from when the threshold value is reached until a minimum threshold value of the electrical potential, caused by the return flow of the charges, is reached.
- environmental properties are determined by means of the reference sensor electrode 15, from which a so-called baseline is formed.
- This baseline maps external global framework conditions, that is to say influences which act both on the sensor electrode 3 and on the reference sensor electrode 15 . These influences are, for example, interactions of the sensor electrode 3 and the reference sensor electrode 15 with a charge distribution of a vehicle body, external charge distributions, external electric and magnetic fields, etc. It is assumed in particular that an external global change occurs significantly more slowly than the cycle times used of for example ⁇ 50 hp.
- the charging and discharging process for the sensor electrode 3 and for the reference sensor electrode 15 are periodically offset such that the charging and discharging process of the sensor electrode 3 starts after the charging and discharging process of the reference sensor electrode 15 has been completed or vice versa. This means that one of the two electrodes is always inactive, so that mutual interference between the electrodes can be avoided. Furthermore, a difference between the time period recorded for the sensor electrode 3 and the time period recorded for the reference sensor electrode 15 is determined. If the difference exceeds a specified threshold value and the time period recorded for the sensor electrode 3 deviates from a specified standard period of time or a standard period recorded in a state recorded without an imminent pinching event, the control unit 5 concludes that a pinching event is imminent.
- FIG. 2 shows a section of a side view of a vehicle 2, the vehicle 2 comprising frameless vehicle doors (not shown).
- closure elements 4 designed as window panes are sealed by means of at least one sealing element 10 surrounding the opening O, in this case a window opening, at least partially at the edge when the vehicle door is closed and the window pane is closed.
- the sealing element 10 is arranged on a vehicle structure 11 formed by a roof pillar.
- FIG. 3 shows a perspective view of a section of a section of vehicle 2 according to FIG. 2 in the area of vehicle structure 11 designed as a roof pillar and of sealing element 10 .
- the sealing element 10 is designed as a roof seal with a so-called bubble shape.
- the sensor electrode 3 is in the sealing element 10 completely and directly surrounded by a sealing material 10.1 or alternatively arranged in a cavity 10.2. In this case, the sensor electrode 3 is arranged in particular in an inner sealing lip of the sealing element 10 .
- the reference sensor electrode 15 in the sealing element 10 is completely and directly surrounded by the sealing material 10.1 or alternatively in the cavity 10.2 in such a way that it is at a greater distance from the opening O than the sensor electrode 3.
- the reference sensor electrode 15 arranged in particular in an outer sealing lip of the sealing element 10 .
- a shielding electrode 13 for shielding the sensor electrode 3 and the reference sensor electrode 15 from disturbances that occur is arranged in the region of the vehicle structure 11 designed as a roof pillar.
- the shielding electrode 13 can also be designed as a shielding cable with an electrical conductor, for example a copper conductor, and electrical insulation surrounding it, for example plastic or rubber insulation.
- the sensor electrode 3 and the reference sensor electrode 15 are not coupled to the electrical ground potential GND via the capacitors 9, 19, for example.
- the shielding electrode 13 is coupled in particular to the ground potential GND and is arranged in particular between the sensor electrode 3 and the edge of the opening O.
- an imminent trapping event is detected analogously to the described detection according to FIG. In this way, the device 1 is not sensitive to disturbances.
- Figure 4 shows a perspective view of a section of a section of a vehicle door 12 in the area of a sealing element 10, the vehicle door 12 being designed as a so-called frame door, the frame of which forms the vehicle structure 11, on which a sealing element 10 for sealing the window pane in the closed state is arranged.
- the sealing element 10 is designed as a frame seal of the frame of the vehicle door 12 .
- a sensor electrode 3 and a reference sensor electrode 15 in the sealing element 10 are completely and directly surrounded by the sealing material 10.1 or in the cavity 10.2 arranged.
- the reference sensor electrode 15 is arranged in such a way that it is at a greater distance from the opening O than the sensor electrode 3.
- a shielding electrode 13 for shielding the sensor electrode 3 and the reference sensor electrode 15 from disturbances that occur is arranged in the region of the vehicle structure 11 embodied as the frame of the vehicle door 12 .
- the shielding electrode 13 can also be designed as a shielding cable with an electrical conductor, for example a copper conductor, and electrical insulation surrounding it, for example plastic or rubber insulation.
- the sensor electrode 3 and the reference sensor electrode 15 are not coupled to the electrical ground potential GND via the capacitors 9, 19, for example.
- the shielding electrode 13 is coupled in particular to the ground potential GND and is arranged in particular between the sensor electrode 3 and the edge of the opening O.
- an imminent trapping event is detected analogously to the described detection according to FIG. In this way, the device 1 is not sensitive to disturbances.
- Figure 5 shows a flowchart of a possible embodiment of a method for detecting a pinching event of a motor-actuated locking system of a vehicle 2.
- the charging phase is carried out by applying a positive electrical potential to the reference sensor electrode 15 via the control pin 18, so that negative charges migrate to the reference sensor electrode 15.
- the electrical Potential of the reference sensor electrode 15 and a resulting distribution of the negative charges on the reference sensor electrode 15 are measured.
- a first branch V1 it is checked whether the electrical potential measured at measuring pin 16 has reached the specified threshold value. If this is not the case, represented by a no branch N 1 , the loading phase continues.
- the control unit 5 applies the electrical ground potential GND to the control pin 18 in a second method step S2, so that the discharge phase starts and negative charges and positive ones Charges from the reference sensor electrode 15 flow back.
- the control unit 5 detects the length of time from when the threshold value is reached until the minimum threshold value of the electrical potential caused by the return flow of the charges is reached. A timer reset takes place before the start of the discharging phase.
- the discharging phase is carried out until the minimum threshold value is reached.
- the control unit 5 checks whether the minimum threshold value has been reached. If this is not the case, represented by a no branch N2, the timer is incremented in a third method step S3.
- a timer value ie the measured time period, is equated to a residual charge quantity in a fourth method step S4.
- asymmetrical low-pass filter is used to carry out asymmetrical filtering of the timer value, with a reduction in the discharge time being weighted more heavily and thus a relationship to a distance of a detectable object being able to be established.
- the method steps S1 to S5 are then carried out analogously for the sensor electrode 3 and a correspondingly filtered timer value T2, ie a duration of the discharge, is formed.
- a difference value between the two is calculated in a sixth method step S6 Timer values T1, T2, that is formed between the time period recorded for the sensor electrode 3 and the time period recorded for the reference sensor electrode 15 until the minimum threshold value of the electric potential is reached.
- the timer value T1 of the reference sensor electrode 15 is subtracted from the timer value T2 for the sensor electrode 3.
- a check is made as to whether the difference value is constantly negative, ie the timer value T1 of the reference sensor electrode 15 is constantly greater than the timer value T2 for the sensor electrode 3. If this is the case, represented by a yes branch J3, an offset calculation takes place in a seventh method step S7 and this is used to calibrate the reference sensor electrode 15.
- the differential value is positive or constantly negative, i.e. if the timer value T1 of the reference sensor electrode 15 is less than the timer value T2 for the sensor electrode 3, represented by a no branch N3, filtering is carried out using a low-pass filter in an eighth method step S8 the difference value.
- FIG. 6 shows a flowchart of a possible exemplary embodiment of a method for avoiding a pinching event in a motor-operated locking system of a vehicle 2, in particular a window pane.
- This method directly follows the ninth method step S9 of the method illustrated in FIG Window closing signal F is present. If this is not the case, represented by a no branch N5, the method according to FIG. 5 is restarted.
- a further branch V6 checks whether a window pane position POS of an upper pane edge is in a critical area K shown in more detail in FIG. If this is not the case, represented by a No branch N6, a jump is made back to the previous branch V5 and the check for the presence of the window closing signal F.
- the window pane position POS is in the critical range K, represented by a yes branch J6, a movement of the window pane is stopped or reversed in an eleventh method step S11 in order to avoid a pinching event.
- FIG. 7 shows a vehicle door 12 with an opening O designed as a window opening and a closure element 4 designed as a window pane, the vehicle door 12 being designed in accordance with the vehicle door 12 shown in FIG.
- a critical area K is shown below an upper edge of the opening O, with a lower edge of the critical area K representing in particular the area in which a trapping event between an upper edge of the window pane and the upper edge of the opening O is likely.
Landscapes
- Power-Operated Mechanisms For Wings (AREA)
- Seal Device For Vehicle (AREA)
- Window Of Vehicle (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18/285,673 US20240110424A1 (en) | 2021-04-06 | 2022-02-08 | Detecting and preventing a trapping event |
EP22708430.8A EP4320329A1 (de) | 2021-04-06 | 2022-02-08 | Detektion und vermeidung eines einklemmereignisses |
KR1020237034183A KR20230153472A (ko) | 2021-04-06 | 2022-02-08 | 끼임 사고의 감지 및 방지 |
JP2023560300A JP2024515497A (ja) | 2021-04-06 | 2022-02-08 | 挟み込み事象の検出及び回避 |
CN202280026826.8A CN117157447A (zh) | 2021-04-06 | 2022-02-08 | 夹持事件的检测与避免 |
Applications Claiming Priority (2)
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DE102021001774.9 | 2021-04-06 | ||
DE102021001774.9A DE102021001774A1 (de) | 2021-04-06 | 2021-04-06 | Detektion und Vermeidung eines Einklemmereignisses |
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WO2022214229A1 true WO2022214229A1 (de) | 2022-10-13 |
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PCT/EP2022/052949 WO2022214229A1 (de) | 2021-04-06 | 2022-02-08 | Detektion und vermeidung eines einklemmereignisses |
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US (1) | US20240110424A1 (de) |
EP (1) | EP4320329A1 (de) |
JP (1) | JP2024515497A (de) |
KR (1) | KR20230153472A (de) |
CN (1) | CN117157447A (de) |
DE (1) | DE102021001774A1 (de) |
WO (1) | WO2022214229A1 (de) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1154110A2 (de) | 2000-05-12 | 2001-11-14 | Anthony Dr. Bledin | Einklemmschutz |
DE102004002415A1 (de) | 2004-01-16 | 2005-08-11 | Metzeler Automotive Profile Systems Gmbh | Vorrichtung zum Steuern und Überwachen eines bewegbaren Schließelements, insbesondere einer elektrisch angetriebenen Fensterscheibe eines Kraftfahrzeugs |
US20050179445A1 (en) * | 2004-02-16 | 2005-08-18 | Honda Motor Co., Ltd. | Capacitance sensor |
DE102020002817A1 (de) | 2020-05-11 | 2020-07-02 | Daimler Ag | Vorrichtung zur Vermeidung eines Einklemmereignisses eines motorisch betätigbaren Verschließsystems eines Fahrzeugs |
-
2021
- 2021-04-06 DE DE102021001774.9A patent/DE102021001774A1/de active Pending
-
2022
- 2022-02-08 KR KR1020237034183A patent/KR20230153472A/ko unknown
- 2022-02-08 US US18/285,673 patent/US20240110424A1/en active Pending
- 2022-02-08 CN CN202280026826.8A patent/CN117157447A/zh active Pending
- 2022-02-08 WO PCT/EP2022/052949 patent/WO2022214229A1/de active Application Filing
- 2022-02-08 JP JP2023560300A patent/JP2024515497A/ja active Pending
- 2022-02-08 EP EP22708430.8A patent/EP4320329A1/de active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1154110A2 (de) | 2000-05-12 | 2001-11-14 | Anthony Dr. Bledin | Einklemmschutz |
DE102004002415A1 (de) | 2004-01-16 | 2005-08-11 | Metzeler Automotive Profile Systems Gmbh | Vorrichtung zum Steuern und Überwachen eines bewegbaren Schließelements, insbesondere einer elektrisch angetriebenen Fensterscheibe eines Kraftfahrzeugs |
US20050179445A1 (en) * | 2004-02-16 | 2005-08-18 | Honda Motor Co., Ltd. | Capacitance sensor |
DE102020002817A1 (de) | 2020-05-11 | 2020-07-02 | Daimler Ag | Vorrichtung zur Vermeidung eines Einklemmereignisses eines motorisch betätigbaren Verschließsystems eines Fahrzeugs |
Also Published As
Publication number | Publication date |
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KR20230153472A (ko) | 2023-11-06 |
CN117157447A (zh) | 2023-12-01 |
US20240110424A1 (en) | 2024-04-04 |
JP2024515497A (ja) | 2024-04-10 |
DE102021001774A1 (de) | 2022-10-06 |
EP4320329A1 (de) | 2024-02-14 |
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