CN110173184B - Compensation method for mistaken reversion of automobile window anti-pinch system - Google Patents

Compensation method for mistaken reversion of automobile window anti-pinch system Download PDF

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Publication number
CN110173184B
CN110173184B CN201910406553.XA CN201910406553A CN110173184B CN 110173184 B CN110173184 B CN 110173184B CN 201910406553 A CN201910406553 A CN 201910406553A CN 110173184 B CN110173184 B CN 110173184B
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pinch
curve
voltage
stage
compensation
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CN201910406553.XA
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CN110173184A (en
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杨双乐
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Guangzhou Magneti Marelli Automotive Electronics Co ltd
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Guangzhou Magneti Marelli Automotive Electronics Co ltd
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    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00Power-operated mechanisms for wings
    • E05F15/40Safety devices, e.g. detection of obstructions or end positions
    • E05F15/42Detection using safety edges
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00Power-operated mechanisms for wings
    • E05F15/40Safety devices, e.g. detection of obstructions or end positions
    • E05F15/42Detection using safety edges
    • E05F2015/483Detection using safety edges for detection during opening
    • 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
    • E05Y2900/00Application of doors, windows, wings or fittings thereof
    • E05Y2900/50Application of doors, windows, wings or fittings thereof for vehicles
    • E05Y2900/53Application of doors, windows, wings or fittings thereof for vehicles characterised by the type of wing
    • E05Y2900/55Windows

Abstract

The invention discloses a compensation method for mistakenly reversing of an automobile window anti-pinch system, which is used for compensating an anti-pinch threshold value of an automobile loop-up section or a voltage loop-up section by adopting a current/speed early-stage curve of the automobile drop section or the voltage drop stage and a change value delta of the current/speed curve under a normal condition when a window runs through a bumpy section or a voltage fluctuation. Because the values of automobile falling and voltage rising are basically consistent in a bumpy road section of an automobile generally, and the values of voltage falling and voltage rising are basically consistent, the data is adopted for compensation, the compensation value can directly meet the requirements of bumpy gradient or voltage fluctuation amplitude, the clamping injury caused by mechanical threshold increase can be avoided, and the clamping prevention is more reliable. And it does not need to increase sensing equipment such as gravity sensor, and the cost is also lower.

Description

Compensation method for mistaken reversion of automobile window anti-pinch system
Technical Field
The invention relates to the technical field of automobile window anti-pinch, in particular to a compensation method for preventing false reversion of an automobile window anti-pinch system.
Background
Along with the development of automobile electronic technology, the automatic lifting of the car window has been popularized to prevent clamping, and due to different clamping prevention algorithms, the car window anti-clamping system automatically lifts back to prevent clamping people, and meanwhile, the probability of mistaken reverse rotation in the normal lifting process is increased. For example: when the automobile runs on a bumpy road surface to lift the window, due to the fact that the road surface is uneven, a downward acting force is applied to the window when the automobile falls and then lifts, and the anti-pinch system is prone to mistakenly think that the automobile pinches an object, and therefore mistaken inversion is caused. For another example: the car load starts in the twinkling of an eye, the ignition is in the twinkling of an eye, the air conditioner starts in the twinkling of an eye, the door window is stifled changeing in the twinkling of an eye, and supply voltage can obviously fall, leads to the door window to obviously slow down, prevents that the system mistake of pressing from both sides thinks that the vehicle presss from both sides the thing, leads to the. Although the two phenomena are similar to clamping things, the two phenomena are contrary to the operation intention of an operator and should be eliminated as much as possible, otherwise, the user experience is influenced, and the brand image is damaged.
In order to avoid this, the anti-pinch system of the window of the vehicle is provided with a compensation function. Some anti-pinch systems add an inherent threshold (anti-pinch force set value) to compensate by recognizing inherent external information (such as vehicle speed), so that the occurrence of false reversal is avoided. For example, the judgment threshold is increased along with the increase of the running speed of the automobile, the larger the speed is, the more the threshold is increased, and therefore the effect that the automobile is not easy to reverse by mistake when passing through a bumpy road is achieved. The method meets the requirement of not reversing by mistake by increasing the threshold in the running process of the vehicle, reduces the probability of the occurrence of the wrong reversing and increases the starting condition of anti-pinch reversing, when an anti-pinch event really occurs, the anti-pinch force required by reversing is larger, the damage of being pinched before the anti-pinch is started is increased, and the possibility of pinching exists.
There is also a method of compensating for a vehicle in a bumpy state by adding an external sensor such as a gravity sensor. The method does not make anti-pinch judgment when detecting that the sensor has downward acceleration (namely, vehicle rises again), and avoids error reversal caused by bumping and rising again. But when the window rises back, the anti-pinch system can not rotate reversely when the anti-pinch event happens, so that the risk of pinching passengers exists. Particularly, on a continuously bumpy road section, the anti-pinch function of the road section can hardly be started, and the anti-pinch function is lost. In addition, the method requires a sensor, which increases the system cost, and has strict requirements on the installation and fixing modes of the sensor, which directly influences the judgment if the fixing is not stable.
In addition, when the voltage fluctuates and rises after the voltage drops, the anti-pinch system also has the possibility of mistakenly thinking that the vehicle pinches something in the rising process, so that the false reversal is caused.
Disclosure of Invention
The invention aims to provide a compensation method for preventing mistaken reversion of an automobile window anti-pinch system, which can effectively ensure an anti-pinch function and simultaneously avoid the mistaken reversion.
The invention relates to a compensation method for mistakenly reversing of an automobile window anti-pinch system, which comprises the following steps of:
monitoring and acquiring a current/speed curve in the window moving process in the window lifting process;
comparing the acquired current/speed curve with a current/speed curve under a normal condition, and identifying whether the vehicle window runs in a bumpy road surface stage or a voltage fluctuation stage;
if the vehicle window runs through a bumpy road section or voltage fluctuation, acquiring a current/speed early-stage curve (namely a falling stage of a waveform) of the vehicle window in a voltage falling stage of a falling road section or a voltage fluctuation stage of the bumpy road section, comparing the current/speed early-stage curve with a current/speed curve under a normal condition (namely a horizontal road section condition or a normal stable condition), and calculating a change value delta relative to the normal condition;
compensating the anti-pinch threshold value by using the change value delta;
and when the vehicle falls back to the high voltage or the voltage falls back to the high voltage, the compensation value is reset to zero.
The method for compensating the mistaken reversal of the anti-pinch system of the automobile window determines whether the window of the automobile is in a bumpy road section or a voltage fluctuation stage by detecting parameters in the operation process of the window of the automobile, and uses a change value delta calculated in an early stage voltage drop stage of the bumpy road section or the voltage fluctuation stage as a compensation value to increase the anti-pinch threshold of a later stage loop-up road section or a voltage boost stage. Because the values of automobile falling and voltage rising are basically consistent in a bumpy road section of an automobile generally, and the values of voltage falling and voltage rising are basically consistent, the data is adopted for compensation, the compensation value can directly meet the requirements of bumpy gradient or voltage fluctuation amplitude, the clamping injury caused by mechanical threshold increase can be avoided, and the clamping prevention is more reliable. And it does not need to increase sensing equipment such as gravity sensor, and the cost is also lower.
Detailed Description
A compensation method for mistaken reverse rotation of an automobile window anti-pinch system comprises the following steps: monitoring and acquiring a current/speed curve in the window moving process in the window lifting process; judging whether the car window runs through a bumpy road section or a voltage fluctuation stage according to the collected current/speed curve; if the vehicle window is judged to be in a bumpy road section or a voltage fluctuation stage during running, calculating a change value delta of the current/speed of the vehicle under a relatively normal condition (a horizontal road section condition or a voltage stabilization condition) when the vehicle is in a voltage drop stage of the bumpy road surface drop road section or the voltage fluctuation stage according to the recorded current/speed curve; compensating the anti-pinch threshold of the current/speed curve of the car window on the loop section by using the change value delta; the compensation method is that the change value delta is subtracted from the anti-pinch threshold, and when the vehicle leaves the loop section (namely the vehicle is back lifted), the compensation value is returned to zero.
When the automobile runs on a bump, the value of the current/speed curve is lower than that of the current/speed curve in a normal road section (horizontal road surface) when the automobile falls off, and a lower value, namely a change value delta, is calculated. On the return route, the value of the current/speed curve is higher than that of the level road under the influence of the downward acceleration. The value of the low falling road section is basically consistent with the value of the high loop road section, therefore, the change value delta is used for compensating the value of the current/speed curve of the uphill road section, the influence of the upward acceleration can be eliminated, and the normal starting of the anti-pinch function on the bumpy road section is ensured.
The compensation method can judge whether the vehicle enters a bumpy road section by using current/speed acquisition monitoring when the vehicle enters the bumpy road section, simultaneously calculates the delta value of corresponding change of a downhill road surface and a normal road surface when the vehicle enters the bumpy road section, generates a new anti-pinch threshold by using the rule that the change values of the lifting process and the falling process are basically consistent, and uses the delta value calculated in the falling process to compensate the anti-pinch threshold value of the lifting process, namely subtracts the delta value of the change value from the anti-pinch threshold value, so that the anti-pinch threshold adapts to the requirement of the climbing process, the problems caused by mistaken reversion and overlarge anti-pinch force are avoided, the anti-pinch function is reliably realized, meanwhile, the anti-pinch force is reasonable, and the occurrence of pinch is avoided. The anti-pinch system is safer and more reliable, and the user experience is improved.
The falling process is a period of time, the change value delta can be continuously changed in the period of time, and the maximum change value delta in the falling time is taken as a compensation value, namely the difference value of the lowest point of the early-stage curve relative to the normal-state curve. Which can reliably prevent the false reversal of the lifting process caused by the upward acceleration.
However, the delta of the variation value is selected such that when the anti-pinch operation is actually encountered during the lift-back process, the anti-pinch force of the anti-pinch reverse rotation may be large, and still a certain influence may be exerted on the user experience. For the further optimization, the falling time can be averagely divided into a plurality of sections, and the maximum value of the delta of the change value of each section is calculated respectively; and simultaneously, correspondingly dividing the rising time into a plurality of corresponding sections, and symmetrically compensating each section in the rising process by using the maximum value delta of each section. Assuming that the fall time and the rise time are divided into three sections, the maximum value delta of the change value delta calculated by the fall time of the first section is 1, the maximum value delta of the change value delta calculated by the fall time of the second section is 2, and the maximum value delta of the change value delta calculated by the fall time of the third section is 3; the symmetrical compensation mode is that the first stage of the rise-back time is compensated by delta3, the second stage of the rise-back time is compensated by delta2, and the third stage of the rise-back time is compensated by delta 1. Through above-mentioned symmetry compensation, can be when reliably avoiding because of the mistake reversal that the acceleration of rising back leads to, when avoiding taking place anti-pinch incident in rising back, prevent pressing from both sides too big of power to further improve user experience.

Claims (4)

1. A compensation method for mistaken reverse rotation of an automobile window anti-pinch system comprises the following steps:
monitoring and acquiring a current/speed curve in the window moving process in the window lifting process;
comparing the acquired current/speed curve with a current/speed curve under a normal condition, and identifying whether the vehicle window runs in a bumpy road surface stage or a voltage fluctuation stage;
if the vehicle window runs through a bumpy road section or voltage fluctuation, acquiring a current/speed early-stage curve of the vehicle window in a voltage dropping stage of a dropping road section or a voltage fluctuation stage of the bumpy road section, and calculating a change value delta relative to a normal condition according to comparison between the current/speed early-stage curve and the current/speed curve in the normal condition;
compensating the anti-pinch threshold value by using the change value delta;
and when the vehicle falls back to the high voltage or the voltage falls back to the high voltage, the compensation value is reset to zero.
2. The compensation method for the mistaken reversion of the automobile window anti-pinch system according to claim 1, characterized in that: the method for compensating the anti-pinch threshold value is to subtract a change value delta from the anti-pinch threshold value.
3. The compensation method for the mistaken reversion of the automobile window anti-pinch system according to claim 1, characterized in that: the change value delta is the maximum value of the change value of the earlier curve relative to the normal curve.
4. The compensation method for the mistaken reversion of the automobile window anti-pinch system according to claim 1, characterized in that: dividing the early-stage curve and the later-stage curve into a plurality of corresponding sections according to time average, and taking the maximum value of the change value of each early-stage curve relative to the normal curve as the change value delta of the corresponding section; and respectively symmetrically compensating each section in the later-period curve by the change value delta of each corresponding section of the earlier-period curve.
CN201910406553.XA 2019-05-16 2019-05-16 Compensation method for mistaken reversion of automobile window anti-pinch system Active CN110173184B (en)

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CN110173184B true CN110173184B (en) 2021-02-19

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CN111409572B (en) * 2020-03-30 2021-12-24 北京经纬恒润科技股份有限公司 Control method and device for vehicle body closing system

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CN102979397B (en) * 2012-11-01 2014-12-10 北京经纬恒润科技有限公司 Anti-pinch method and device thereof
CN103032006B (en) * 2012-12-21 2015-04-08 芜湖蓝宙电子科技有限公司 Control method for anti-pinch electric vehicle window
KR101462112B1 (en) * 2014-02-28 2014-11-17 동양기전 주식회사 Apparatus and method for controlling power window using output currents of motor
DE102016208946A1 (en) * 2016-05-24 2017-11-30 Conti Temic Microelectronic Gmbh Control device and method for detecting a movement impairment in a drive device

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