Anti-false-triggering control method and system for car window anti-pinch and storage medium
By combining real-time pressure along the upper edge of the window with motor signals for multi-condition clamping judgment, the problem of false triggering of the window anti-pinch system under complex driving conditions has been solved, achieving higher anti-interference capability and action accuracy, and improving user experience and system reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-14
- Publication Date
- 2026-04-10
AI Technical Summary
Existing anti-pinch window systems are prone to false triggering due to mechanical vibration under complex driving conditions, making it difficult to distinguish between environmental vibration interference and actual clamping signals, which affects user experience and system reliability.
By combining real-time pressure on the upper edge of the window and real-time signals from the window motor for multi-condition clamping judgment, and using a PVDF thin-film piezoelectric pressure sensor to collect pressure changes, combined with motor signals from a Hall sensor, the window position and speed are accurately obtained, constructing a multi-dimensional obstacle recognition logic to avoid false triggering caused by single signal judgment.
It significantly improves anti-interference capabilities and action accuracy, ensures reliable execution of occupant's operating intentions, optimizes the user experience, and enhances the safety and user trust of the vehicle's electronic control system.
Smart Images
Figure CN121827646A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the technical field of automobiles, and particularly relates to a false-triggering prevention control method and system for a car window anti-pinch system and a storage medium. BACKGROUND
[0002] The car window anti-pinch system has become a key configuration for protecting passengers, and the mainstream solution mainly relies on a Hall sensor to monitor the motor speed or detects the resistance through the current. However, these traditional solutions have significant limitations in complex driving conditions such as potholes, gravel, and speed bumps. Mechanical vibrations generated by the vehicle body and the transmission system can easily cause the friction between the glass and the guide rail to change abruptly or cause abnormal fluctuations in the motor operating parameters. If only a single signal is used for judgment, it is difficult to effectively distinguish the difference between the signal characteristics caused by environmental vibration and the signal characteristics caused by a real pinch obstacle, thereby causing the anti-pinch function to be triggered by mistake, resulting in unexpected reversal or stopping of the window. Such misoperation not only violates the user's operation intention and reduces the user experience, but also affects the user's trust in the reliability of the vehicle control system. Therefore, how to ensure the effectiveness of the anti-pinch safety function while improving the system's anti-interference ability and judgment accuracy has become a problem to be solved in the current technical field. SUMMARY
[0003] To solve the above problems, the present application provides a false-triggering prevention control method and system for a car window anti-pinch system and a storage medium. The method, system and storage medium use the real-time pressure on the upper edge of the window and combine the real-time signals of the window motor to make a multi-condition pinch judgment, thereby avoiding the false triggering of the anti-pinch function caused by single signal judgment in complex road conditions and improving the anti-interference ability and action accuracy.
[0004] To solve the above technical problems, the present application provides a false-triggering prevention control method for a car window anti-pinch system, which includes the following steps: In response to an automatic window lifting instruction, output a motor driving instruction; Control the window to lift based on the motor driving instruction, so that the window enters an action state; In the action state, real-time acquisition of the real-time pressure on the upper edge of the window and the real-time signals of the window motor; Based on the real-time signals of the window motor, determine whether the window is in a preset anti-pinch area. If it is in the anti-pinch area, make a multi-condition pinch judgment based on the real-time signals of the window motor and the real-time pressure on the upper edge of the window, and obtain a pinch determination result to realize false-triggering prevention control; wherein: If the pinch determination result is a pinch obstacle, output a motor reverse driving instruction to control the window to descend to a preset height.
[0005] In the above scheme, after responding to the automatic lifting window instruction, the control window enters the action state, and whether to enter the preset anti-pinch area is judged according to the real-time signal of the window motor; once entering, the multi-condition pinch judgment is executed based on the real-time pressure of the upper edge of the window and the real-time signal of the window motor to obtain the pinch determination result, a multi-dimensional obstacle recognition logic is constructed, and the signals corresponding to the real-time interference signals generated by the vehicle bumping and vibration and the real pinch obstacles are clearly distinguished, thereby fundamentally avoiding the anti-pinch function mis-triggering problem caused by single signal judgment under complex road conditions, greatly improving the anti-interference ability and action accuracy, ensuring reliable execution of the passenger operation intention, optimizing the use experience, and enhancing the safety and user trust of the vehicle electronic control system.
[0006] It should be noted that the real-time pressure of the upper edge of the window can be collected by a PVDF film piezoelectric pressure sensor installed inside the rubber strip on the upper edge of the window. The sensor has high sensitivity and fast response characteristics, and can accurately capture the dynamic pressure changes caused by the contact between the window and the rubber strip or the pinch object. The real-time signal of the window motor includes but is not limited to the pulse signal from the Hall sensor, the motor current signal and the speed signal, which are used to comprehensively reflect the motion state of the window.
[0007] Further, the real-time signal of the window motor is used to determine whether the window is in the preset anti-pinch area, and if it is in the anti-pinch area, multi-condition pinch judgment is performed based on the real-time signal of the window motor and the real-time pressure of the upper edge of the window to obtain the pinch determination result, thereby realizing anti-mis-triggering control; including: The motor pulse signal is obtained based on the real-time signal of the window motor. The number of motor rotation and the direction of rotation are obtained based on the motor pulse signal. The real-time position of the upper edge of the window is obtained based on the number of motor rotation and the direction of rotation. The real-time position of the upper edge of the window is compared with the preset anti-pinch position interval, and if the real-time position of the upper edge of the window is in the preset anti-pinch position interval, it is determined that it is in the anti-pinch area, and then multi-condition pinch judgment is performed based on the real-time signal of the window motor and the real-time pressure of the upper edge of the window to obtain the pinch determination result, thereby realizing anti-mis-triggering control.
[0008] In the above scheme, by collecting the motor pulse signal and analyzing the number of rotations and direction, the real-time position of the upper edge of the window can be accurately obtained, and then it can be accurately determined whether the window enters the preset anti-pinch position interval, thereby providing reliable trigger basis and data support for subsequent multi-condition pinch judgment. After confirming that it is in the anti-pinch area, the real-time signals of the window motor and the real-time pressure of the upper edge of the window are synchronously combined for cooperative judgment, effectively distinguishing between real pinch events and electrical signal fluctuations caused by vehicle jolting and vibration, while ensuring the effectiveness of the anti-pinch safety function, fundamentally avoiding false triggering in complex road conditions, enhancing the stability and reliability of anti-pinch control, and improving user experience and riding safety.
[0009] It should be noted that the preset anti-pinch position interval can correspond to a range of 4mm to 200mm from the top of the window glass to the edge of the upper frame of the window. This interval is the key stroke segment during the closing process of the window, which is prone to pinch risk. The above scheme only enables the multi-condition pinch judgment logic in this interval, and the rest of the positions are controlled according to the conventional lifting logic, thereby balancing the safety judgment accuracy and system operation efficiency.
[0010] Further, if the pinch determination result is a pinch obstacle, an electric motor reverse drive instruction is output to control the window to descend to a preset height; comprising: The real-time lifting speed of the window is obtained based on the real-time signals of the window motor; The real-time lifting speed of the window is compared with a preset anti-pinch speed threshold, and the real-time pressure of the upper edge of the window is compared with a preset pressure threshold. If the real-time lifting speed of the window is less than the preset anti-pinch speed threshold, and the real-time pressure of the upper edge of the window is greater than the preset pressure threshold, the pinch determination result is a pinch obstacle, and then an electric motor reverse drive instruction is output to control the window to descend to a preset height.
[0011] In the above scheme, by setting and cooperatively comparing the real-time lifting speed of the window and the preset anti-pinch speed threshold, and the real-time pressure of the upper edge of the window and the preset pressure threshold, an accurate and reliable anti-pinch determination mechanism for the window is constructed. In the determination process, two types of signals are obtained in real time and compared respectively. Only when both “the real-time lifting speed of the window is less than the preset anti-pinch speed threshold” and “the real-time pressure of the upper edge of the window is greater than the preset pressure threshold” are met, it is determined that there is a pinch obstacle event, and then an electric motor reverse drive instruction is output to control the window to descend to a preset height. The above scheme effectively overcomes the limitations of single signal criterion, clearly distinguishes between real pinch behavior and transient interference caused by vehicle jolting, sealant deformation, etc., greatly reduces the probability of false triggering, significantly improves the accuracy and robustness of the anti-pinch function, and ensures the reliable unity of safety response and user experience.
[0012] It should be noted that the preset anti-pinch speed threshold can be set to 50 mm / s, and the preset pressure threshold can be set to 5N. The multi-condition clamping judgment adopts "and" logic, that is, both the speed being lower than the threshold and the pressure being higher than the threshold must be met at the same time, and then the effective clamping event is determined. The preset height of the window is preferably 200 mm to ensure sufficient release of the obstacle.
[0013] Further, the anti-mis-triggering control method for the vehicle window anti-pinch according to the application further comprises: If the clamping determination result is motor stall, a motor cut-off instruction is output to control the window to stop moving.
[0014] In the above scheme, when the clamping determination result of the multi-condition clamping judgment is "motor stall" instead of "clamping obstacle", a motor cut-off instruction is output to control the window to stop moving. For pure motor stall caused by mechanical jamming, structural interference, etc., immediate power-off stop can effectively avoid motor overload damage and potential thermal safety risk; and when the clamping determination result is clamping obstacle, the motor reverse drive instruction is still executed to control the window to descend to the preset height. The above scheme avoids the mechanical impact or secondary damage to components that may be caused by unnecessary reverse action in the non-clamping jamming scenario, thereby further enhancing the protection capability of the abnormal state of the window lifting system and improving the safety and reliability of the vehicle electronic control.
[0015] It should be noted that the preset time window can be set according to the motor characteristics and the vehicle system tolerance, which is used to filter the instantaneous large current pulse generated by the vehicle bumping and the motor starting moment, so as to ensure that only when the overload is continuous, the stall protection is triggered, thereby further reducing the possibility of mis-stop.
[0016] Further, if the clamping determination result is motor stall, a motor cut-off instruction is output to control the window to stop moving; comprising: The real-time motor current value is obtained based on the real-time signals of the window motor; The real-time motor current value is compared with the preset stall current threshold, and if the real-time motor current value is continuously greater than the preset stall current threshold within the preset time window, the clamping determination result is motor stall, and then a motor cut-off instruction is output to control the window to stop moving.
[0017] In the above scheme, the motor real-time current value is obtained based on the real-time signal of the window motor, which is compared with the preset locked-rotor current threshold value. Only when the motor real-time current value continuously exceeds the threshold value within the preset time window, it is determined that the motor is locked-rotor and the motor cut-off instruction is output, and the window is controlled to stop moving, thereby effectively distinguishing the transient overload current caused by vehicle bumping and starting moment from the real continuous locked-rotor state, fundamentally avoiding the false protection shutdown caused by transient current fluctuation, and ensuring the continuity of lifting operation. At the same time, it can timely identify the real overload failure caused by mechanical jamming and prevent the motor from burning out or the lifting mechanism from being damaged, thereby significantly enhancing the robustness and durability, and realizing the unity of safety protection and operation reliability.
[0018] Further, the anti-mis-triggering control method for preventing the window from being pinched according to the application further comprises: If the pinching determination result is no obstacle, the window continues to lift based on the motor driving instruction until the window enters the locked-rotor state.
[0019] In the above scheme, the control logic after the pinching determination result is no obstacle is clear, which ensures that the user's operation intention is completely executed after the interference is excluded. At this time, the window continues to lift based on the motor driving instruction until it enters the locked-rotor state. Intervention is only performed when it is determined that the window is pinched or abnormally locked-rotor. In the normal and safe state, the complete lifting stroke is not disturbed. It not only avoids unnecessary pauses or reversals of the normal stroke caused by excessive sensitivity, but also ensures smooth and efficient lifting. Moreover, the inherent locked-rotor point of the mechanism is used as the end point of the stroke, which saves the complex position calibration and redundant end sensors. Finally, a good balance is achieved between safety protection and operation fluency, thereby enhancing the user's trust in the reliability and consistency of the automatic window function.
[0020] Further, if the pinching determination result is no obstacle, the window continues to lift based on the motor driving instruction until the window enters the locked-rotor state, which comprises: The real-time lifting speed of the window and the real-time current value of the motor are obtained based on the real-time signal of the window motor. The real-time lifting speed of the window, the real-time current value of the motor, and the real-time pressure on the upper edge of the window are compared with the corresponding preset anti-pinch speed threshold value, the preset locked-rotor current threshold value, and the preset pressure threshold value, respectively. If the real-time lifting speed of the window is greater than or equal to the preset anti-pinch speed threshold value, the real-time current value of the motor is not continuously greater than the preset locked-rotor current threshold value within the preset time window, and the real-time pressure on the upper edge of the window is less than or equal to the preset pressure threshold value, the pinching determination result is no obstacle, and the window continues to lift based on the motor driving instruction until the window enters the locked-rotor state.
[0021] In the above scheme, the real-time lifting speed of the window, the real-time current value of the motor, and the real-time pressure on the upper edge of the window are synchronously acquired, and are compared with the preset anti-pinch speed threshold, the preset locked-rotor current threshold, and the preset pressure threshold respectively. Only when the conditions of "the speed is greater than or equal to the preset anti-pinch speed threshold", "the current is not continuously overloaded within the preset time window", and "the pressure is less than or equal to the preset pressure threshold" are met simultaneously, it is determined that there is no obstacle. The above scheme accurately filters the interference of complex working conditions such as vehicle vibration and instantaneous resistance fluctuation, effectively distinguishes between normal lifting and potential risks, completely avoids false intervention in a safe condition, ensures smooth execution of the user's operation intention, and improves the continuity of the experience. At the same time, the mechanical locked-rotor state is used as the end point of the stroke, which reduces the dependence on high-precision position sensors, helps to simplify the system architecture and control cost, and realizes the unity of safety protection and practicality.
[0022] It should be noted that "until the window enters the locked-rotor state" means that when the window is raised to the top or lowered to the bottom, the mechanical structure limits the natural stop of the motor. The above scheme identifies this state by monitoring the current and speed signals, and stops outputting the driving instruction, completing a complete lifting cycle.
[0023] The application also provides an anti-mis-triggering control system for window anti-pinch, comprising: A response module for outputting a motor driving instruction in response to an automatic lifting window instruction; A window driving module for controlling the window to lift or lower based on the motor driving instruction, so that the window enters a motion state; A signal real-time acquisition module for acquiring the real-time pressure on the upper edge of the window and the real-time signal of the window motor in the motion state; An anti-mis-triggering control module for determining whether the window is in a preset anti-pinch area based on the real-time signal of the window motor. If it is in the anti-pinch area, multi-condition pinch judgment is performed based on the real-time signal of the window motor and the real-time pressure on the upper edge of the window to obtain a pinch determination result, so as to realize anti-mis-triggering control. If the pinch determination result is pinch obstacle, a motor reverse driving instruction is outputted to control the window to lower to a preset height.
[0024] In the above scheme, through the modular architecture composed of the response module, the window driving module, the signal real-time acquisition module and the false trigger prevention control module, precise and reliable control of the window anti-pinch function is realized. The responsibilities of each module are clear and work together, which not only clarifies the signal flow and division of labor, improves the maintainability and scalability of the system, but also provides double-dimensional data support for the false trigger prevention control module by synchronously collecting the real-time signals of the window motor and the real-time pressure on the upper edge of the window through the signal real-time acquisition module. The false trigger prevention control module first judges whether to enter the preset anti-pinch area based on the motor signal, and then executes the double-signal multi-condition pinch judgment in this area, effectively distinguishing between transient interference caused by road bumps and real obstacle pinch. The above scheme significantly reduces the probability of false triggering while ensuring the safety function of anti-pinch, and has clear structure and logical robustness, improving the accuracy of safety response and the overall reliability of the window control system.
[0025] It should be noted that the modules of the system can be integrated into a single window anti-pinch controller, which is electrically connected with the PVDF film piezoelectric pressure sensor, the Hall sensor, the window lifting switch, the battery power supply and the glass lifting motor to form a complete false trigger prevention control structure. The controller cyclically collects signals of each sensor and executes judgment logic at a fixed time interval (such as 1ms).
[0026] Further, the false trigger prevention control module is configured to judge whether the window is in a preset anti-pinch area based on the real-time signal of the window motor, and if it is in the anti-pinch area, perform multi-condition pinch judgment based on the real-time signal of the window motor and the real-time pressure on the upper edge of the window to obtain a pinch determination result, so as to realize false trigger prevention control; comprising: obtaining a motor pulse signal based on the real-time signal of the window motor; obtaining the number of motor rotations and the direction of rotation based on the motor pulse signal; obtaining the real-time position of the upper edge of the window based on the number of motor rotations and the direction of rotation; comparing the real-time position of the upper edge of the window with a preset anti-pinch position interval, if the real-time position of the upper edge of the window is in the preset anti-pinch position interval, it is determined that it is in the anti-pinch area, and then multi-condition pinch judgment is performed based on the real-time signal of the window motor and the real-time pressure on the upper edge of the window to obtain a pinch determination result, so as to realize false trigger prevention control.
[0027] In the above scheme, by collecting the motor pulse signal and analyzing the number of rotations and direction, the real-time position of the upper edge of the window can be accurately obtained, and then it can be accurately determined whether the window enters the preset anti-pinch position interval, thereby providing reliable triggering basis and data support for subsequent multi-condition pinch judgment. After confirming that it is in the anti-pinch area, the real-time signal of the window motor and the real-time pressure of the upper edge of the window are synchronously combined for cooperative judgment, which can effectively distinguish between real pinch events and electrical signal fluctuations caused by vehicle jolting and vibration, while ensuring the effectiveness of the anti-pinch safety function, fundamentally avoiding false triggering in complex road conditions, enhancing the stability and reliability of the anti-pinch control, and improving user experience and riding safety.
[0028] The application further provides a computer-readable storage medium item, comprising: a stored computer program, which, when running, controls a device where the computer-readable storage medium is located to perform the steps of the anti-mis-triggering control method for vehicle window anti-pinch according to the application. BRIEF DESCRIPTION OF DRAWINGS
[0029] Figure 1 A flowchart of an anti-mis-triggering control method for vehicle window anti-pinch according to an embodiment of the application is provided. Figure 2 A schematic diagram of the architecture of an anti-mis-triggering control system for vehicle window anti-pinch according to an embodiment of the application is provided. DETAILED DESCRIPTION
[0030] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the application.
[0031] Please refer to Figure 1 The embodiment provides an anti-mis-triggering control method for vehicle window anti-pinch, comprising the following steps: Step S1: outputting a motor driving instruction in response to an automatic up-down window instruction; Step S2: controlling the window to ascend or descend based on the motor driving instruction, so that the window enters a motion state; Step S3: in the motion state, acquiring real-time pressure of the upper edge of the window and real-time signal of the window motor in real time; Step S4: determining whether the window is in a preset anti-pinch area based on the real-time signal of the window motor, and if it is in the anti-pinch area, performing multi-condition pinch judgment based on the real-time signal of the window motor and the real-time pressure of the upper edge of the window, and obtaining a pinch determination result, so as to realize anti-mis-triggering control; wherein: If the clamping determination result is a clamping obstacle, a motor reverse rotation driving instruction is output to control the window to descend to a preset height.
[0032] In this embodiment, after responding to the automatic lifting window instruction, the control window enters the action state, and whether it enters the preset anti-clamping area is determined according to the real-time signal of the window motor. Once it enters, the multi-condition clamping judgment is performed based on the real-time pressure of the upper edge of the window and the real-time signal of the window motor to obtain the clamping determination result, and a multi-dimensional obstacle recognition logic is constructed to clearly distinguish the transient interference signal caused by vehicle bumping and vibration from the signal corresponding to the real clamping obstacle, thereby fundamentally avoiding the false triggering problem of the anti-clamping function caused by single signal judgment under complex road conditions, greatly improving the anti-interference ability and action accuracy, ensuring reliable execution of the passenger's operation intention, optimizing the use experience, and enhancing the safety and user trust of the vehicle electronic control system.
[0033] Further, the anti-clamping area is determined based on the real-time signal of the window motor. If it is in the anti-clamping area, multi-condition clamping judgment is performed based on the real-time signal of the window motor and the real-time pressure of the upper edge of the window to obtain the clamping determination result, thereby achieving false triggering control. The motor pulse signal is obtained based on the real-time signal of the window motor. The motor rotation number and rotation direction are obtained based on the motor pulse signal. The real-time position of the upper edge of the window is obtained based on the motor rotation number and rotation direction. The real-time position of the upper edge of the window is compared with the preset anti-clamping position interval. If the real-time position of the upper edge of the window is in the preset anti-clamping position interval, it is determined that it is in the anti-clamping area, and then multi-condition clamping judgment is performed based on the real-time signal of the window motor and the real-time pressure of the upper edge of the window to obtain the clamping determination result, thereby achieving false triggering control.
[0034] In this embodiment, by collecting the motor pulse signal and analyzing the rotation number and direction, the real-time position of the upper edge of the window can be accurately obtained, and whether the window enters the preset anti-clamping position interval can be accurately determined, thereby providing reliable triggering basis and data support for subsequent multi-condition clamping judgment. After confirming that it is in the anti-clamping area, the real-time signal of the window motor and the real-time pressure of the upper edge of the window are synchronously combined for collaborative judgment to effectively distinguish the real clamping event from the electrical signal fluctuation caused by vehicle bumping and vibration, thereby fundamentally avoiding the false triggering problem under complex road conditions, enhancing the stability and reliability of the anti-clamping control, and improving the user experience and riding safety.
[0035] In one embodiment, the process of determining whether the window is in the preset anti-clamping area based on the real-time signal of the window motor specifically includes: Firstly, the pulse signal generated in the process of motor operation is collected by the Hall sensor installed at the window motor, as the motor pulse signal in the real-time signal of the window motor. Then, the number of rotations and the rotation direction of the motor are obtained based on the motor pulse signal. Next, the real-time position of the window top edge, i.e. the real-time distance between the upper edge of the window glass and the upper edge of the window frame, is calculated according to the number of rotations and the rotation direction of the motor, combined with the transmission ratio and other parameters of the window lifting system.
[0036] Then, the obtained real-time position of the window top edge is compared with the preset anti-pinch position interval. The preset anti-pinch position interval can be set to a range of 4mm to 200mm from the upper edge of the window frame, for example. If the real-time position of the window top edge is within the preset anti-pinch position interval, it is determined that the window is currently in the anti-pinch area.
[0037] It should be noted that the embodiment can provide reliable and accurate trigger basis for whether to start the subsequent multi-condition pinch judgment by collecting and analyzing the motor pulse signal to accurately calculate the real-time position of the window, thereby avoiding the cumulative error that may be caused by simply relying on time or single signal to estimate the position, ensuring the accuracy of the anti-pinch area determination, and thereby laying a reliable foundation for subsequent distinction between real pinch and external interference.
[0038] After determining that it is in the preset anti-pinch area, the embodiment will further perform multi-condition pinch judgment based on the real-time signal of the window motor (which can include vehicle speed information obtained by further processing the pulse signal) and the real-time pressure of the window top edge, to obtain a pinch determination result, and realize the anti-mis-triggering control.
[0039] Further, if the pinch determination result is a pinch obstacle, an electric motor reverse driving instruction is output to control the window to descend to a preset height; including: the real-time lifting speed of the window is obtained based on the real-time signal of the window motor; the real-time lifting speed of the window is compared with a preset anti-pinch speed threshold, and the real-time pressure of the window top edge is compared with a preset pressure threshold, if the real-time lifting speed of the window is less than the preset anti-pinch speed threshold, and the real-time pressure of the window top edge is greater than the preset pressure threshold, the pinch determination result is a pinch obstacle, and then an electric motor reverse driving instruction is output to control the window to descend to a preset height.
[0040] In the embodiment, a precise and reliable window anti-pinch determination mechanism is constructed by setting and comparing the real-time window lifting speed with the preset anti-pinch speed threshold and the real-time pressure on the upper edge of the window with the preset pressure threshold. In the determination process, the two types of signals are acquired and compared in real time. Only when the real-time window lifting speed is less than the preset anti-pinch speed threshold and the real-time pressure on the upper edge of the window is greater than the preset pressure threshold, the event of pinching the obstacle is determined, and then the motor reverse driving instruction is output to control the window to descend to the preset height. The embodiment effectively overcomes the limitations of single signal criterion, clearly distinguishes the real pinching behavior from the instantaneous interference caused by vehicle jolt and sealant deformation, greatly reduces the probability of false triggering, significantly improves the accuracy and robustness of the anti-pinch function, and ensures the reliable unity of safety response and user experience.
[0041] Further, the anti-mis-triggering control method for window anti-pinch according to the application further comprises: If the pinching determination result is motor stall, an motor cutoff instruction is output to control the window to stop moving.
[0042] In the embodiment, when the pinching determination result of the multi-condition pinching judgment is "motor stall" instead of "pinching obstacle", the motor cutoff instruction is output to control the window to stop moving. For pure motor stall caused by mechanical jamming, structural interference, etc., immediate power-off stop can effectively avoid motor overload damage and potential thermal safety risk. When the pinching determination result is pinching obstacle, the motor reverse driving instruction is still executed to control the window to descend to the preset height. The embodiment avoids the mechanical impact or secondary damage to components that may be caused by unnecessary reverse action in the non-pinch jamming scenario, ensures the safety anti-pinch function of the occupants, further enhances the protection capability of the window lifting system in abnormal state, and improves the safety and reliability of the vehicle electronic control.
[0043] Further, if the pinching determination result is motor stall, the motor cutoff instruction is output to control the window to stop moving; comprising: The real-time motor current value is acquired based on the real-time signals of the window motor; The real-time motor current value is compared with the preset stall current threshold. If the real-time motor current value is continuously greater than the preset stall current threshold within the preset time window, the pinching determination result is motor stall, and then the motor cutoff instruction is output to control the window to stop moving.
[0044] In the embodiment, the motor real-time current value is obtained based on the real-time signal of the window motor, and is compared with the preset locked-rotor current threshold. Only when the motor real-time current value continuously exceeds the threshold within the preset time window, it is determined that the motor is locked-rotor and the motor cut-off instruction is output, and the window is controlled to stop moving, so as to effectively distinguish the transient overload current caused by vehicle bumping and starting moment from the real continuous locked-rotor state, fundamentally avoid the false protection shutdown caused by transient current fluctuation, and protect the continuity of lifting operation. At the same time, the real overload fault caused by mechanical jamming can be identified in time, and the motor burning or lifting mechanism damage is prevented, so as to significantly enhance the robustness and durability, and realize the unity of safety protection and operation reliability.
[0045] Further, the anti-mis-triggering control method for the vehicle window anti-pinch according to the application further comprises: If the pinch determination result is no obstacle, the window continues to lift based on the motor driving instruction until the window enters the locked-rotor state.
[0046] In the embodiment, the control logic after the pinch determination result is no obstacle is clear, which ensures that the user operation intention is completely executed after the interference is excluded. At this time, the window continues to lift based on the motor driving instruction until the window enters the locked-rotor state. Only when it is determined that the window is pinched or abnormally locked-rotor, the intervention is carried out. In the normal and safe state, the complete lifting stroke is not disturbed. Both the unnecessary stop or reverse of the normal stroke caused by excessive sensitivity are avoided, and the lifting is smooth and efficient. The inherent locked-rotor point of the mechanism is used as the stroke end point, and the complex position calibration and redundant end sensor are saved. Finally, a good balance is achieved between safety protection and operation fluency, and the user's trust in the reliability and consistency of the automatic window function is enhanced.
[0047] Further, if the pinch determination result is no obstacle, the window continues to lift based on the motor driving instruction until the window enters the locked-rotor state. The method comprises: The window real-time lifting speed and the motor real-time current value are obtained based on the real-time signal of the window motor. The window real-time lifting speed, the motor real-time current value and the window upper edge real-time pressure are compared with the corresponding preset anti-pinch speed threshold, the preset locked-rotor current threshold and the preset pressure threshold respectively. If the window real-time lifting speed is greater than or equal to the preset anti-pinch speed threshold, the motor real-time current value is not continuously greater than the preset locked-rotor current threshold within the preset time window, and the window upper edge real-time pressure is less than or equal to the preset pressure threshold, the pinch determination result is no obstacle, and then the window continues to lift based on the motor driving instruction until the window enters the locked-rotor state.
[0048] In the embodiment, by synchronously acquiring the real-time lifting speed of the window, the real-time current value of the motor, and the real-time pressure on the upper edge of the window, and comparing them with the preset anti-pinch speed threshold, the preset locked-rotor current threshold, and the preset pressure threshold respectively, only when the conditions of “the speed is greater than or equal to the preset anti-pinch speed threshold”, “the current is not continuously overloaded within the preset time window”, and “the pressure is less than or equal to the preset pressure threshold” are met simultaneously, it is determined that there is no obstacle. The embodiment accurately filters the interference of complex working conditions such as vehicle vibration and instantaneous resistance fluctuation, effectively distinguishes between normal lifting and potential risks, completely avoids false intervention in a safe condition, ensures smooth execution of the user's operation intention, and improves the continuity of the experience. At the same time, the mechanical locked-rotor state is used as the end of the stroke, which reduces the dependence on high-precision position sensors, helps to simplify the system architecture and control cost, and realizes the unity of safety protection and practicality.
[0049] In an embodiment, a false trigger prevention control method for an automobile window anti-pinch system is provided. The execution of the method relies on a control structure composed of a window anti-pinch controller, a PVDF film piezoelectric pressure sensor installed on the inner side of the window upper edge rubber strip, a Hall sensor for monitoring the motor speed, a window lifting switch, a battery power supply, and a glass lifting motor.
[0050] The method includes the following steps: in response to an automatic lifting window instruction triggered by the window lifting switch, the window anti-pinch controller outputs a corresponding motor driving instruction. Based on the motor driving instruction, the power of the battery power supply is supplied to the glass lifting motor through the control of the relay on-off to drive it to rotate forward or reverse, so that the window enters the action state of lifting.
[0051] In the action state, the window anti-pinch controller collects multiple signals in real time at a fixed time interval (for example, 1 ms): the pressure on the window upper edge rubber strip is acquired in real time through the PVDF film piezoelectric pressure sensor as the real-time pressure on the window upper edge; the speed signal of the motor is monitored through the Hall sensor, and the real-time lifting speed of the window is calculated based on this as part of the real-time signal of the window motor.
[0052] Based on the real-time signal of the window motor, it is determined whether the window is in a preset anti-pinch area. Specifically, the real-time position of the window upper edge is calculated according to the number of motor rotations, and if the position is in the preset anti-pinch position interval (such as the range of 4 mm to 200 mm from the completely closed position of the window top), it is determined to enter the anti-pinch area.
[0053] If it is determined that the vehicle is in the preset anti-pinch area, multi-condition pinch judgment is performed based on the real-time signal of the window motor and the real-time pressure on the upper edge of the window to obtain a pinch determination result, thereby achieving anti-misfire control. The multi-condition pinch judgment includes comparing the real-time lifting speed of the window with a preset anti-pinch speed threshold (e.g., 50 mm / s) and comparing the real-time pressure on the upper edge of the window with a preset pressure threshold (e.g., 5 N).
[0054] If the real-time lifting speed of the window is less than the preset anti-pinch speed threshold and the real-time pressure on the upper edge of the window is greater than the preset pressure threshold, the pinch determination result is that an obstacle is pinched.
[0055] It should be noted that the above multi-condition pinch judgment is intended to clearly distinguish between transient interference signals caused by vehicle bumps and vibrations and signals corresponding to real pinch obstacles, thereby effectively avoiding misfires under complex road conditions.
[0056] If the pinch determination result is that an obstacle is pinched, the window anti-pinch controller outputs a motor reverse drive instruction to control the window to descend by a preset height (e.g., 200 mm) to release the obstacle.
[0057] Further, the method further includes judgment and processing of the motor stall state: The real-time current value of the motor is obtained based on the real-time signal of the window motor.
[0058] The real-time current value of the motor is compared with a preset stall current threshold. If the real-time current value of the motor is continuously greater than the preset stall current threshold within a preset time window, the pinch determination result is that the motor is stalled.
[0059] If the pinch determination result is that the motor is stalled, the window anti-pinch controller outputs a motor cutoff instruction to control the window to immediately stop moving.
[0060] It should be noted that, by introducing the duration judgment, the present embodiment can effectively distinguish between current spikes caused by starting moments or transient jams and real sustained stall states, thereby avoiding unnecessary protective shutdown and ensuring the continuity of normal lifting.
[0061] If the conclusion of the multi-condition pinch judgment is that there is no obstacle, i.e., the real-time lifting speed of the window is greater than or equal to the preset anti-pinch speed threshold, the real-time current value of the motor is not continuously greater than the preset stall current threshold within the preset time window, and the real-time pressure on the upper edge of the window is less than or equal to the preset pressure threshold, the window anti-pinch controller will control the window to continue lifting based on the initial motor drive instruction until the window naturally enters the stall state due to mechanical limiting, thereby completing the entire lifting stroke.
[0062] Through the above process, the embodiment comprehensively utilizes multi-dimensional signals such as pressure and speed for fusion judgment, can significantly reduce the probability of false triggering caused by road vibration, sealant deformation and other interference, and improves the accuracy, robustness and user experience of the anti-pinch function.
[0063] Please refer to Figure 2 The embodiment also provides an anti-mis-triggering control system for a vehicle window anti-pinch function, comprising: A response module for outputting a motor driving instruction in response to an automatic lifting window instruction; A vehicle window driving module for controlling the vehicle window to lift or lower based on the motor driving instruction, so that the vehicle window enters a motion state; A signal real-time acquisition module for acquiring real-time pressure on the upper edge of the vehicle window and real-time signals of the vehicle window motor in the motion state; An anti-mis-triggering control module for judging whether the vehicle window is in a preset anti-pinch area based on the real-time signals of the vehicle window motor, and if so, performing multi-condition pinch judgment based on the real-time signals of the vehicle window motor and the real-time pressure on the upper edge of the vehicle window to obtain a pinch determination result, so as to realize anti-mis-triggering control; wherein if the pinch determination result is an obstacle, a motor reverse driving instruction is outputted to control the vehicle window to lower to a preset height.
[0064] In the embodiment, the modular architecture composed of the response module, the vehicle window driving module, the signal real-time acquisition module and the anti-mis-triggering control module realizes precise and reliable control of the vehicle window anti-pinch function. The clear responsibilities and collaborative operation of each module not only clarify the signal flow and division of labor, improve the maintainability and scalability of the system, but also provide dual-dimensional data support for the anti-mis-triggering control module by synchronously collecting the real-time signals of the vehicle window motor and the real-time pressure on the upper edge of the vehicle window through the signal real-time acquisition module. The anti-mis-triggering control module first judges whether to enter the preset anti-pinch area based on the motor signals, and then performs dual-signal multi-condition pinch judgment in the area, effectively distinguishing between transient interference caused by road bumps and real obstacle pinch. The embodiment significantly reduces the probability of false triggering while ensuring the safety function of anti-pinch, and has clear structure and logical robustness, improving the accuracy of safety response and the overall reliability of the vehicle window control system.
[0065] Further, the anti-mis-triggering control module is configured to judge whether the vehicle window is in a preset anti-pinch area based on the real-time signals of the vehicle window motor, and if so, perform multi-condition pinch judgment based on the real-time signals of the vehicle window motor and the real-time pressure on the upper edge of the vehicle window to obtain a pinch determination result, so as to realize anti-mis-triggering control; comprising: Obtaining a motor pulse signal based on the real-time signals of the vehicle window motor; Obtaining the number of motor rotations and the rotation direction based on the motor pulse signal; acquire a real-time position of the upper edge of the vehicle window based on the number of rotations and the rotation direction of the motor; compare the real-time position of the upper edge of the vehicle window with a preset anti-pinch position interval, if the real-time position of the upper edge of the vehicle window is in the preset anti-pinch position interval, it is determined that it is in the anti-pinch area, and then multi-condition pinch judgment is performed based on the real-time signal of the vehicle window motor and the real-time pressure of the upper edge of the vehicle window to obtain a pinch determination result, so as to realize anti-mis-triggering control.
[0066] In the embodiment, by collecting the motor pulse signal and analyzing the number of rotations and the direction, the real-time position of the upper edge of the vehicle window can be accurately acquired, and then whether the vehicle window enters the preset anti-pinch position interval can be accurately determined, which provides reliable triggering basis and data support for subsequent multi-condition pinch judgment. After confirming that it is in the anti-pinch area, the real-time signal of the vehicle window motor and the real-time pressure of the upper edge of the vehicle window are synchronously combined for collaborative judgment, which can effectively distinguish the real pinch event from the electrical signal fluctuation caused by vehicle bumping and vibration, fundamentally avoid the anti-mis-triggering problem under complex road conditions, enhance the stability and reliability of the anti-pinch control, and improve the user experience and riding safety.
[0067] On the basis of the above-mentioned embodiments, another embodiment of the present application provides a computer readable storage medium including a stored computer program, wherein the computer program controls the device where the computer readable storage medium is located to execute the anti-mis-triggering control method for vehicle window anti-pinch according to any one of the above-mentioned method embodiments of the present application when the computer program is running.
[0068] The modules integrated in the system can be stored in a computer readable storage medium if they are realized in the form of software functional units and sold or used as independent products. Based on this understanding, all or part of the processes in the above-mentioned embodiments can also be completed by a computer program instructing related hardware, and the computer program can be stored in a computer readable storage medium. The computer program can implement the steps of each method embodiment when executed by a processor. The computer program includes computer program code, which can be in the form of source code, object code, executable files or some intermediate forms, etc. The computer readable medium can include any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal and software distribution medium, etc.
[0069] The above is the preferred embodiment of the present application, it should be pointed out that, for those skilled in the art, without departing from the principles of the present application, can also make a number of improvements and refinements, these improvements and refinements are also considered to be within the scope of the present application.
Claims
1. A method for preventing accidental triggering of anti-pinch features in vehicle windows, characterized in that: Includes the following steps: In response to the automatic window lift command, output motor drive command; The vehicle window is raised or lowered based on the motor drive command, so that the window enters the operating state. During the operation, the real-time pressure on the upper edge of the window and the real-time signal of the window motor are acquired. Based on the real-time signal from the window motor, it is determined whether the window is in a preset anti-pinch zone. If it is in the anti-pinch zone, a multi-condition clamping judgment is performed based on the real-time signal from the window motor and the real-time pressure on the upper edge of the window to obtain the clamping judgment result, thereby achieving anti-false triggering control; wherein: If the clamping determination result is that an obstacle is clamped, a motor reverse drive command is output to control the window to descend to a preset height.
2. The method for preventing accidental triggering of anti-pinch devices for vehicle windows according to claim 1, characterized in that, The method involves determining whether the window is within a preset anti-pinch zone based on the real-time signal from the window motor. If it is within the anti-pinch zone, a multi-condition clamping judgment is performed based on the real-time signal from the window motor and the real-time pressure on the upper edge of the window to obtain the clamping judgment result, thereby achieving anti-false triggering control; including: The motor pulse signal is obtained based on the real-time signal of the window motor; The number of motor rotations and the direction of rotation are obtained based on the motor pulse signal. The real-time position of the upper edge of the car window is obtained based on the number of rotations and the direction of rotation of the motor. Based on the comparison between the real-time position of the upper edge of the window and the preset anti-pinch position range, if the real-time position of the upper edge of the window is within the preset anti-pinch position range, it is determined that it is in the anti-pinch area. Then, based on the real-time signal of the window motor and the real-time pressure of the upper edge of the window, a multi-condition clamping judgment is performed to obtain the clamping judgment result, so as to realize the anti-false triggering control.
3. The method for preventing accidental triggering of anti-pinch devices for vehicle windows according to claim 1, characterized in that, If the clamping determination result is that an obstacle is being clamped, a motor reverse drive command is output to control the window to descend to a preset height; including: The real-time lifting speed of the window is obtained based on the real-time signal of the window motor. The real-time lifting speed of the window is compared with a preset anti-pinch speed threshold, and the real-time pressure on the upper edge of the window is compared with a preset pressure threshold. If the real-time lifting speed of the window is less than the preset anti-pinch speed threshold, and the real-time pressure on the upper edge of the window is greater than the preset pressure threshold, then the clamping determination result is that the window is clamping an obstacle, and then a motor reverse drive command is output to control the window to descend to a preset height.
4. The method for preventing accidental triggering of anti-pinch devices for vehicle windows according to claim 1, characterized in that, Also includes: If the clamping determination result is that the motor is stalled, a motor cut-off command is output to control the window to stop moving.
5. The method for preventing accidental triggering of anti-pinch devices for vehicle windows according to claim 4, characterized in that, If the clamping determination result is that the motor is stalled, a motor cut-off command is output to control the window to stop moving; including: The real-time current value of the motor is obtained based on the real-time signal of the window motor. The real-time current value of the motor is compared with a preset stall current threshold. If the real-time current value of the motor is continuously greater than the preset stall current threshold within a preset time window, the clamping determination result is that the motor is stalled, and then a motor cut-off command is output to control the window to stop moving.
6. The method for preventing accidental triggering of anti-pinch devices for vehicle windows according to claim 1, characterized in that, Also includes: If the clamping determination result is no obstacle, the window will continue to rise and fall based on the motor drive command until the window enters a stall state.
7. The method for preventing accidental triggering of anti-pinch devices for vehicle windows according to claim 6, characterized in that, If the clamping determination result is no obstacle, the window is controlled to continue to rise and fall based on the motor drive command until the window enters a stall state; including: The real-time lifting speed of the window and the real-time current value of the motor are obtained based on the real-time signal of the window motor. The real-time lifting speed of the window, the real-time current value of the motor, and the real-time pressure on the upper edge of the window are compared with the corresponding preset anti-pinch speed threshold, preset stall current threshold, and preset pressure threshold, respectively. If the real-time lifting speed of the window is greater than or equal to the preset anti-pinch speed threshold, and the real-time current value of the motor is not continuously greater than the preset stall current threshold within a preset time window, and the real-time pressure on the upper edge of the window is less than or equal to the preset pressure threshold, then the clamping determination result is unobstructed. Then, based on the motor drive command, the window is controlled to continue to lift and lower until the window enters the stall state.
8. A control system for preventing accidental triggering of vehicle window anti-pinch mechanisms, characterized in that, include: The response module is used to output motor drive commands in response to automatic window lifting commands; The window drive module is used to control the window to rise and fall based on the motor drive command, so that the window enters the action state; The real-time signal acquisition module is used to acquire the real-time pressure on the upper edge of the window and the real-time signal of the window motor in the action state. The anti-false triggering control module is used to determine whether the window is in a preset anti-pinch zone based on the real-time signal of the window motor. If it is in the anti-pinch zone, it performs multi-condition clamping judgment based on the real-time signal of the window motor and the real-time pressure on the upper edge of the window to obtain the clamping judgment result, so as to realize the anti-false triggering control. If the clamping judgment result is that the window is clamping an obstacle, it outputs a motor reverse drive command to control the window to descend to a preset height.
9. A false triggering control system for anti-pinch vehicle windows according to claim 8, characterized in that, The anti-false triggering control module is used to determine whether the window is in a preset anti-pinch zone based on the real-time signal of the window motor. If it is in the anti-pinch zone, it performs a multi-condition clamping judgment based on the real-time signal of the window motor and the real-time pressure on the upper edge of the window to obtain the clamping judgment result, thereby realizing anti-false triggering control; including: The motor pulse signal is obtained based on the real-time signal of the window motor; The number of motor rotations and the direction of rotation are obtained based on the motor pulse signal. The real-time position of the upper edge of the car window is obtained based on the number of rotations and the direction of rotation of the motor. Based on the comparison between the real-time position of the upper edge of the window and the preset anti-pinch position range, if the real-time position of the upper edge of the window is within the preset anti-pinch position range, it is determined that it is in the anti-pinch area. Then, based on the real-time signal of the window motor and the real-time pressure of the upper edge of the window, a multi-condition clamping judgment is performed to obtain the clamping judgment result, so as to realize the anti-false triggering control.
10. A computer-readable storage medium, characterized in that, include: A stored computer program, wherein, when the computer program is executed, it controls the device containing the computer-readable storage medium to perform a method for preventing accidental triggering of a vehicle window as described in any one of claims 1-7.