WO2015027774A1 - Dispositif et procédé de protection anti-pincement pour fenêtre de véhicule motorisée - Google Patents

Dispositif et procédé de protection anti-pincement pour fenêtre de véhicule motorisée Download PDF

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Publication number
WO2015027774A1
WO2015027774A1 PCT/CN2014/082382 CN2014082382W WO2015027774A1 WO 2015027774 A1 WO2015027774 A1 WO 2015027774A1 CN 2014082382 W CN2014082382 W CN 2014082382W WO 2015027774 A1 WO2015027774 A1 WO 2015027774A1
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WO
WIPO (PCT)
Prior art keywords
window
motor
ripple current
current
rise
Prior art date
Application number
PCT/CN2014/082382
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English (en)
Chinese (zh)
Inventor
刘伟
Original Assignee
奇瑞汽车股份有限公司
芜湖普威技研有限公司
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 奇瑞汽车股份有限公司, 芜湖普威技研有限公司 filed Critical 奇瑞汽车股份有限公司
Publication of WO2015027774A1 publication Critical patent/WO2015027774A1/fr

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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
    • E05F15/41—Detection by monitoring transmitted force or torque; Safety couplings with activation dependent upon torque or force, e.g. slip couplings
    • 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
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/665—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings

Definitions

  • the present invention relates to the field of automobiles, and more particularly to an anti-pinch protection device and method for an electric window. Background technique
  • the anti-pinch protection device is used to detect whether the window encounters an obstacle during the automatic rising of the window, and when the obstacle is encountered, the window is automatically stopped and the window is lowered.
  • the existing anti-pinch protection device mainly comprises an anti-pinch motor, and the anti-pinch motor is provided with at least one Hall element.
  • the anti-clip motor drives the window to rise.
  • the magnetic scalar of the motor is stable.
  • the Hall element will sensitively detect the magnetic field change signal and issue a control command. Stop the motor or signal that the motor is running in reverse.
  • embodiments of the present invention provide an anti-pinch protection device and method for an electric window.
  • the technical solution is as follows:
  • an embodiment of the present invention provides an anti-pinch protection device for an electric window, the device comprising:
  • a detecting circuit configured to detect a working current of the DC motor when the DC motor drives the window to rise
  • control module configured to determine, according to an operating current detected by the detecting circuit, whether the window encounters an obstacle during the rising process, and when the window encounters an obstacle during the rising process, controlling the DC motor Stop driving the window to rise or control the DC motor to drive the window to descend;
  • the DC motor is configured to drive the window action under the control of the control module.
  • control module includes:
  • a filtering unit configured to filter a working current detected by the detecting circuit to obtain a ripple current
  • a first determining unit configured to determine whether a ripple current obtained by the filtering unit is greater than a predetermined limit
  • An execution unit configured to: when the first determining unit determines that the ripple current is greater than the predetermined limit, output a stop window command to control the DC motor to stop driving the window to rise or output a window to open the window command The window is lowered by driving the DC motor to drive.
  • control module includes:
  • a filtering unit configured to filter an operating current detected by the detecting circuit to obtain a ripple current
  • a first determining unit configured to determine whether a ripple current obtained by the filtering unit is greater than the predetermined limit, when When the ripple current is greater than the predetermined limit value, determining whether the rate of change of the ripple current obtained by the filtering unit at a predetermined time interval within a predetermined time period is less than a preset rate of change;
  • An execution unit configured to: when the first determining unit determines that the rate of change of the ripple current is less than the preset rate of change, output a stop window command to control the DC motor to stop driving the window to rise or output A window command is opened to control the DC motor to drive the window down.
  • control module further includes:
  • a second determining unit configured to determine, according to the ripple current obtained by the filtering unit, whether the window rises to a predetermined anti-trapping range.
  • the device further includes:
  • a receiving module configured to receive a remote control signal for closing the window
  • the control module is further configured to: when the receiving module receives the remote control signal, determine whether the vehicle meets a condition for remotely closing the window, and when the car meets the condition that the remotely closes the window, controlling the The DC motor drives the window to rise; the condition for the remote control to close the window includes that the four doors and two covers of the automobile and the ignition switch are both in a closed state.
  • an embodiment of the present invention provides an anti-pinch protection method for an electric window, the method comprising:
  • Detecting an operating current of the DC motor when the DC motor drives the window to rise determining, according to the detected operating current, whether the window encounters an obstacle during the rising process, When the window encounters an obstacle during the ascent, the DC motor is controlled to stop driving the window to rise or to control the DC motor to drive the window to descend.
  • determining, according to the detected working current, whether the window encounters an obstacle during the rising process including:
  • determining, according to the detected working current, whether the window encounters an obstacle during the rising process including:
  • the method before determining whether the obtained ripple current is greater than the predetermined limit, the method further includes: determining, according to the detected operating current, whether the window rises to a predetermined anti-trapping range; When the window rises to a predetermined anti-trap range, it is judged whether the obtained ripple current is greater than the predetermined limit.
  • the method further includes:
  • Determining whether the vehicle satisfies the condition for remotely closing the window, and the condition for the remote control to close the window includes that the four doors and two covers of the automobile and the ignition switch are all in a closed state;
  • the DC motor is controlled to drive the window to rise when the vehicle satisfies the condition of the remotely closing the window.
  • the control module controls the DC motor to drive the window to rise, and according to the operating current detected by the detection circuit when the DC motor drives the window to rise, the window is determined to be rising. Whether there is an obstacle in the middle, when the window encounters an obstacle during the ascent, the control DC motor stops driving the window to rise or controls the DC motor to drive the window to fall; the window can be driven by the ordinary DC motor, and according to The working current of the DC motor protects the power window from the clip, which reduces the cost of the anti-pinch protection device for the electric window.
  • FIG. 1 is a schematic structural view of an anti-pinch protection device for an electric window according to an embodiment of the present invention
  • FIG. 2 is a schematic structural view of another anti-pinch protection device for an electric window according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a current characteristic curve provided by an embodiment of the present invention.
  • FIG. 4 is a flowchart of a method for protecting an anti-pinch of an electric window according to an embodiment of the present invention
  • FIG. 5 is a flowchart of still another method for protecting an anti-pinch for an electric window according to an embodiment of the present invention.
  • FIG. 1 shows an anti-pinch protection device for an electric window provided by an embodiment of the present invention.
  • the device includes:
  • the detecting circuit 101 is configured to detect the operating current of the DC motor 102 when the DC motor 102 drives the window to rise.
  • the control module 103 is configured to determine, according to the operating current detected by the detecting circuit 101, whether the window encounters an obstacle during the rising process, and when the window encounters an obstacle during the rising process, the DC motor 102 is controlled to stop driving the window to rise. Or control the DC motor 101 to drive the window down.
  • the DC motor 102 is configured to drive the window action under the control of the control module 103.
  • the embodiment of the invention controls the DC motor to drive the window to rise by the control module, and according to the working current of the DC motor detected by the detecting circuit when the driving window is raised, it is determined whether the window encounters an obstacle during the rising process, when the window is at When an obstacle is encountered during the ascent, the DC motor is stopped to drive the window to rise or the DC motor drive window is lowered; the window can be driven by the ordinary DC motor, and the electric window can be prevented according to the working current of the DC motor.
  • the clip protection reduces the cost of the anti-pinch protection device for the electric window.
  • FIG. 2 shows still another anti-pinch protection device for an electric window provided by an embodiment of the present invention. Referring to FIG. 2, the device includes:
  • the detecting circuit 201 is configured to detect the operating current of the DC motor 202 when the DC motor 202 drives the window to rise.
  • the control module 203 is configured to determine, according to the operating current detected by the detecting circuit 201, whether the window encounters an obstacle during the rising process, and when the window encounters an obstacle during the rising process, the DC motor 202 is controlled to stop driving the window to rise. Or control the DC motor 202 to drive the window down.
  • the DC motor 202 is configured to drive the window action under the control of the control module 203.
  • the DC motor 202 can be a brushed DC motor.
  • the detecting circuit 201 may include a sampling resistor and an operational amplifier, and the first ends of the sampling resistors are respectively connected to the DC motor 202 and the first input end of the operational amplifier, and the second end of the sampling resistor Grounded and connected to the second input of the op amp.
  • the output of the operational amplifier is connected to the control module 203.
  • the sample resistor is connected in series in the working circuit of the DC motor 202 such that the current value flowing through the sampling resistor is equal to the operating current value of the DC motor 202.
  • the two inputs of the op amp are connected across the sampling resistor to capture the voltage across the sampling resistor.
  • the value of the voltage across the sampling resistor is divided by the resistance of the sampling resistor to obtain the current value flowing through the sampling resistor.
  • control module 203 may include a filtering unit 2031, a first determining unit 2032, and an executing unit 2033.
  • the filtering unit 2031 is configured to filter the operating current detected by the detecting circuit 201 to obtain a ripple current.
  • the filtering unit 2031 may be a low-pass filter circuit capable of filtering out high-frequency noise in the operating current of the DC motor 202 detected by the detecting circuit 201 to obtain a ripple current.
  • Figure 3 shows a current characteristic plot with ripple current.
  • the current characteristic diagram is a ripple current loading of the DC motor 202 barrier-free window. Assume that point A represents the peak current of the DC motor 202 when it is started, and point B represents the peak value of the current when the DC motor 202 is blocked by the window to the top. It can be seen from Fig. 3 that the ripple current changes linearly and evenly during the unobstructed rise of the window.
  • the first determining unit 2032 is configured to determine whether the ripple current obtained by the filtering unit 2031 is greater than a predetermined limit.
  • the executing unit 2033 is configured to be used as the first judgment sheet
  • the output stop window command is output to control the DC motor 202 to stop driving the window up or output the open window command to control the DC motor 202 to drive the window to descend.
  • the predetermined limit value may be a ripple current value of the DC motor when the window is unobstructed.
  • the resistance of the window rise increases, and the load of the DC motor increases. Based on the characteristics that the DC motor has a larger load and the working current is larger, the ripple current of the DC motor will also increase. Big.
  • the ripple current obtained by the filtering unit 2031 is compared with a predetermined limit. If the ripple current is greater than a predetermined limit, it is determined that the window encounters an obstacle during the ascent. On the other hand, if the ripple current is not greater than the predetermined limit, it is determined that the window does not encounter an obstacle during the ascent.
  • the forward/reverse rotation of the DC motor 202 can be realized, thereby realizing the DC motor 202 to drive the window up/down. It is easy to know that when the DC motor 202 is turned off (disconnected from the power supply) and no longer rotates, the window will stop rising/falling.
  • the first determining unit 2032 is configured to determine whether the ripple current obtained by the filtering unit 2031 is greater than a predetermined limit, and when the ripple current is greater than a predetermined limit, determining the filtering unit 2031 Whether the rate of change of the ripple current obtained at predetermined time intervals within a predetermined period of time is less than a preset rate of change.
  • the executing unit 2033 is further configured to: when the first determining unit 2032 determines that the rate of change of the ripple current is less than the preset rate of change, output a stop windowing command to control the DC motor 202 to stop driving the window to rise or output an open window command to control The DC motor 202 drives the window to descend.
  • the rate of change of the operating current is relatively large.
  • the rate of change of the ripple current here may be the slope of the ripple current change.
  • control module 203 may further include a second determining unit 2034, configured to determine, according to the ripple current obtained by the filtering unit 2031, whether the window is raised to a predetermined anti-trapping range.
  • a second determining unit 2034 configured to determine, according to the ripple current obtained by the filtering unit 2031, whether the window is raised to a predetermined anti-trapping range.
  • the predetermined anti-pinch range may be an area 4 to 202 mm from the top position of the unobstructed upward movement of the window.
  • the second determining unit 2034 determines whether the window rises to a predetermined anti-trapping range according to the ripple current obtained by the filtering unit 2031, and includes: obtaining, in a corresponding relationship between the preset current characteristic curve and the window position, The current characteristic curve corresponds to the position of the window, and judges the car Whether the window position is within the predetermined anti-trap range.
  • the current characteristic curve shown in Figure 3 describes the current characteristics such as current magnitude and current variation amplitude. As the window increases, the current characteristic curve changes uniformly and linearly. The current characteristic curve corresponding to each position of the window rise is different.
  • the first determining unit 2032 starts to determine whether the ripple current obtained by the filtering unit 2031 is greater than a predetermined limit.
  • the apparatus further includes a receiving module 204 for receiving a remote control signal for closing the window.
  • the control module 203 is further configured to: when the receiving module 204 receives the remote control signal, determine whether the vehicle meets the condition of remotely closing the window, and when the car meets the condition of remotely closing the window, the control DC motor 202 drives the window to rise.
  • the conditions for remotely closing the window include that the four doors and two covers of the car and the ignition switch are both off.
  • the receiving module 204 can be a BCM (Body Control Module) in a car.
  • the user can send a remote control signal for closing the window through an RF-Key (Radio Frequency-Key).
  • a radio receiver is provided in the BCM to receive remote control signals that close the window.
  • the BCM can transmit the remote control signal to the control module 203 via the Lin line.
  • the control module 203 should determine whether the vehicle satisfies the condition of remotely closing the window, such as the four-door and two-cover closing of the car and the IGN OFF (Ignition Switch OFF).
  • the control DC motor 202 drives the window to rise.
  • control module 203 may be an MCU (Micro Control Unit, also referred to as a single-chip microcomputer).
  • MCU Micro Control Unit
  • the embodiment of the invention controls the DC motor to drive the window to rise by the control module, and according to the working current of the DC motor detected by the detecting circuit when the driving window is raised, it is determined whether the window encounters an obstacle during the rising process, when the window is at When an obstacle is encountered during the ascent, the DC motor is stopped to drive the window to rise or the DC motor drive window is lowered; the window can be driven by the ordinary DC motor, and the electric window can be prevented according to the working current of the DC motor.
  • the clip protection reduces the cost of the anti-pinch protection device for the electric window.
  • FIG. 4 shows an anti-pinch protection method for an electric window provided by an embodiment of the present invention. Referring to FIG. 4, the method includes:
  • Step 301 Receive a window closing request to control the DC motor to drive the window to rise.
  • Step 302 Detect the working current of the DC motor when the DC motor drives the window to rise.
  • Step 303 Determine whether the window encounters an obstacle during the rising process according to the detected working current.
  • step 304 is performed; when the window does not encounter an obstacle during the ascent, the DC motor is driven to drive the window to the top to close the window.
  • Step 304 Control the DC motor to stop driving the window to rise or control the DC motor to drive the window to descend.
  • the embodiment of the invention controls the DC motor to drive the window to rise, and according to the working current of the DC motor when driving the window to rise, it is judged whether the window encounters an obstacle during the ascending process, and the window encounters an obstacle during the ascending process.
  • the DC motor is stopped to drive the window to rise or the DC motor is driven to lower the window; the window can be driven by the ordinary DC motor, and the electric window can be protected against the clamp according to the working current of the DC motor, reducing the electric power.
  • the cost of the anti-pinch protection device for the window FIG. 5 shows still another anti-pinch protection method for an electric window provided by an embodiment of the present invention. Referring to FIG. 5, the method includes:
  • Step 401 Receive a request to close the window.
  • receiving the close window request includes a remote control signal and a non-remote control signal.
  • the remote control signal can be a signal that is wirelessly transmitted to the system, such as a radio signal.
  • the non-remote control signal can be a signal that is sent to the system by a wired method (e.g., a wired switch).
  • Step 402 When the window request is closed as a remote control signal, it is determined whether the vehicle satisfies the condition that the remote control closes the window.
  • the conditions for remotely closing the window include that the four doors and two covers of the car and the ignition switch are all in the closed state. If the car meets the conditions for remotely closing the window, go to step 403. If the car does not meet the conditions for the remote control to close the window, exit the process.
  • step 403 is performed.
  • Step 403 Control the DC motor to drive the window to rise.
  • Step 404 Detects the operating current of the DC motor when the DC motor drives the window to rise.
  • the operating current of the DC motor can be detected by the detecting circuit 101 or the detecting circuit 201 shown in Fig. 1 or Fig. 2.
  • Step 405 Determine whether the window encounters an obstacle during the rising process according to the detected working current.
  • step 406 is performed; when the window does not encounter an obstacle during the ascent, the DC motor is driven to drive the window to the top to close the window.
  • the step 405 includes:
  • Step 4051 Filter the detected operating current to obtain a ripple current.
  • the ripple current can be obtained by the filtering unit 2031 shown in Fig. 2.
  • Step 4052 According to the ripple current, determine whether the window rises to a predetermined anti-trap range, and when the window rises to a predetermined anti-trap range, step 4053 is performed.
  • step 4052 For details of the step 4052, refer to the corresponding content in the embodiment shown in FIG. 2.
  • Step 4053 determining whether the obtained ripple current is greater than a predetermined limit. When the ripple current is greater than the predetermined limit, performing step 4054; otherwise, when the ripple current is not greater than the predetermined limit, determining that the window is not rising during the rising process In the event of an obstacle, the control DC motor drives the window to continue to rise until the window rises to the top and the window is completely closed.
  • This step 4053 can be referred to the corresponding content in the embodiment shown in FIG. 2.
  • Step 4054 It is judged whether the rate of change of the ripple current obtained at the predetermined time interval within the predetermined time period is less than the preset rate of change.
  • step 406 is performed.
  • the control DC motor drives the window to continue to rise until the window rises to the top end, and the window is completely closed.
  • This step 4054 can be referred to the corresponding content in the embodiment shown in FIG. 2.
  • Step 406 Control the DC motor to stop driving the window to rise or control the DC motor to drive the window to descend. It should be noted that, in another implementation manner of the embodiment of the present invention, the step 405 can also be implemented by the following steps:
  • step 406 is performed; Conversely, when the ripple current is not greater than the predetermined limit, it is determined that the window does not encounter an obstacle during the ascent, and the control DC motor drives the window to continue to rise until the window rises to the top and the window is completely closed.
  • the embodiment of the invention controls the DC motor to drive the window to rise, and according to the working current of the DC motor when driving the window to rise, it is judged whether the window encounters an obstacle during the ascending process, and the window encounters an obstacle during the ascending process.
  • the DC motor stop driving the window to rise or control the DC motor drive vehicle.
  • the window is lowered; the window can be driven by an ordinary DC motor, and the electric window can be protected against the clamp according to the working current of the DC motor, thereby reducing the cost of the anti-pinch protection device of the electric window.
  • the anti-pinch protection device for the power window provided by the above embodiment is exemplified by the division of each functional module mentioned above in the anti-pinch protection.
  • the above function can be allocated according to requirements. It is completed by different functional modules, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.
  • the anti-pinch protection device for the electric window provided by the above embodiment is the same as the anti-pinch protection method for the electric window. The specific implementation process is described in detail in the method embodiment, and details are not described herein again.
  • serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments.
  • a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

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  • Power-Operated Mechanisms For Wings (AREA)
  • Window Of Vehicle (AREA)

Abstract

L'invention porte sur un dispositif et sur un procédé de protection anti-pincement pour une fenêtre de véhicule motorisée, lequel dispositif comprend un circuit de détection, un module de commande et un moteur à courant continu ; le circuit de détection est utilisé pour détecter le courant de travail du moteur à courant continu quand le moteur à courant continu entraîne en montée une fenêtre du véhicule ; le module de commande est utilisé pour déterminer, en fonction du courant de travail détecté, si la fenêtre de véhicule rencontre ou non un obstacle dans le processus de montée, et, si oui, alors, le module de commande commande le moteur à courant continu de façon à arrêter d'entraîner la fenêtre de véhicule en montée, ou commande le moteur à courant continu de façon à entraîner la fenêtre de véhicule en descente ; et le moteur à courant continu est utilisé pour entraîner, sous la commande du module de commande, la fenêtre de véhicule en déplacement. Le procédé met en œuvre : la réception d'une demande pour fermer la fenêtre de véhicule, et la commande du moteur à courant continu pour entraîner la fenêtre de véhicule en montée ; la détection du courant de travail du moteur à courant continu ; en fonction du courant de travail détecté, la détermination du fait que la fenêtre de véhicule rencontre non l'obstacle dans le processus de montée, et, si oui, alors, la commande du moteur à courant continu de façon à arrêter d'entraîner la fenêtre de véhicule en montée, ou la commande du moteur à courant continu de façon à entraîner la fenêtre de véhicule en descente.
PCT/CN2014/082382 2013-08-30 2014-07-17 Dispositif et procédé de protection anti-pincement pour fenêtre de véhicule motorisée WO2015027774A1 (fr)

Applications Claiming Priority (2)

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CN201310389666.6 2013-08-30
CN201310389666.6A CN103696649B (zh) 2013-08-30 2013-08-30 用于电动车窗的防夹保护装置及方法

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CN106884595B (zh) * 2017-03-27 2019-04-02 深圳市赛格车圣科技有限公司 电动尾门控制方法及装置
CN108132396B (zh) * 2017-12-11 2020-11-03 北京经纬恒润科技有限公司 一种运动位置的确定方法及装置
CN109612508B (zh) * 2018-12-10 2021-03-19 南通辰同智能科技有限公司 一种轨道交通用屏蔽门障碍物次级检测装置及其检测方法
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CN112412238A (zh) * 2019-08-23 2021-02-26 上海汽车集团股份有限公司 一种降低车辆关门力的***及方法
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CN201202350Y (zh) * 2008-05-26 2009-03-04 上海电控研究所 汽车电动车窗控制装置
CN103696649A (zh) * 2013-08-30 2014-04-02 奇瑞汽车股份有限公司 用于电动车窗的防夹保护装置及方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4109741A1 (fr) * 2021-06-24 2022-12-28 Infineon Technologies Austria AG Détection de condition de calage de moteur
US11728753B2 (en) 2021-06-24 2023-08-15 Infineon Technologies Austria Ag Detecting motor stall condition

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