KR20090025993A - System and methood of controlling power window for vehicles - Google Patents

Abstract

A system and a method for control of a power window for vehicle are provided to forcedly raise the window glass without safety control function when a person outside attempts to intrude through the opening of the vehicle window, thus protecting the driver or passengers. A system for control of a power window for vehicle comprises a window driving unit(230) ascending, descending, or stopping the window glass, a sensor unit(240) which produces pulse signal corresponding to the rotation of a drive motor, a switch unit(210) producing operating signal indicating the ascent, descent, or stop of the window glass, and a window controller(220) providing control signal to the window driving part. The sensor unit includes a ring magnet which is fixed to the rotation axis of the drive motor and hall sensors which are installed around the ring magnet and produce pulse signal corresponding to the rotation of the ring magnet and the movement of the window glass.

Description

Power Window Control System and Control Method for Vehicles {System and Methood of Controlling Power Window for Vehicles}

The present invention relates to a vehicle power window control method and control system, and more particularly, to a vehicle power window control system and a control method for raising the window glass when an outsider is intruded during the rise of the window glass.

There is a power window system having a safety control function that protects the obstacle by automatically stopping the rising of the window glass when an obstacle is detected during the rising or closing of the window glass. When the driver or the occupant closes the window glass by using the window switch in the vehicle, an accident may occur in which an important human part or an object such as an arm, a head or a neck of a person is caught between the window glass and the vehicle door frame. The power window system with safety control automatically stops the rising window glass to prevent such an accident.

On the other hand, when the driver or the passenger is in the vehicle with the window glass open, an outsider may attempt to invade. In this case, the driver or passenger will continue to operate the window switch to raise the window glass. However, the power window system having a safety control function automatically judges the intrusion as an obstacle and automatically stops the rising of the window glass. Accordingly, an outsider can easily invade the vehicle, and the driver or passenger may be in a dangerous situation by the outsider.

As described above, the power window system having the safety control function automatically stops the rising of the window glass when the driver or the passenger attempts to close the window glass by operating the window switch. There is a disadvantage that cannot be protected.

Accordingly, a technical problem of the present invention is to provide a vehicle power window control system that protects a driver or a passenger from external intrusion by raising the window glass without executing a safety control function when an outsider attempts to intrude into an open space of the vehicle window glass. And a control method thereof.

In order to achieve the above technical problem, a vehicle power window control system according to the present invention includes: a window driver including a driving motor which raises, lowers or stops a window glass and is controlled by a control signal; A sensor unit installed on the rotation shaft of the driving motor and generating a pulse signal corresponding to the rotation of the driving motor; A switch unit for generating an operation signal for instructing the rising, falling or stopping operation of the window glass according to a user's operation; And a window controller configured to receive an operation signal and a pulse signal, generate a control signal using the same, and provide a control signal to the window driver, wherein the control signal stops the window glass when an obstacle is detected while the window glass is rising. Or a lowering control and detecting a rising operation signal indicating the rising of the window glass within a predetermined time from when the obstacle is detected.

The sensor unit is fixed to the rotating shaft of the drive motor is installed ring magnet; And a hall sensor installed around the ring magnet and generating a pulse signal in response to the rotation of the ring magnet and the movement of the window glass.

The window controller may include a calculator configured to calculate a position and relative velocity of the window glass using a pulse signal; An obstacle detecting unit detecting whether an obstacle is present while the window glass is being raised by using the calculated position and relative speed of the window glass; A storage unit for storing information on the pulse signal, the operation signal, and the calculated position and relative velocity of the window glass; And a driving controller for generating a control signal and providing the control signal to the window driver.

Here, the rising operation signal detected within a predetermined time from when the obstacle is detected may be an operation signal for instructing the user to continuously raise the window glass by manual operation of the user.

In addition, when the obstacle is detected during the ascending of the window glass, the control signal stops the window glass or lowers the predetermined distance from the position where the obstacle is detected, and instructs the rising of the window glass within a predetermined time from when the obstacle is detected. When the rising operation signal is detected, the window glass may be stopped or lowered by a predetermined distance from the position where the obstacle is detected, and then the signal may be controlled to raise the window glass according to the rising operation signal.

According to another aspect of the present invention, there is provided a method for controlling a power window for a vehicle. Transmitting a control signal according to an operation signal to a motor; Calculating a position and relative velocity of the window glass by using a sensor installed around a rotation axis of the drive motor; Detecting the presence of an obstacle during the ascending of the window glass based on the calculated position and relative speed of the window glass; And detecting an obstacle in the middle of the rising of the window glass, and detecting a rising operation signal indicating the rising of the window glass within a predetermined time therefrom, by raising the window glass according to the rising operation signal.

The raising of the window glass according to the rising manipulation signal may further include lowering the window glass by a predetermined distance from a position where an obstacle is detected before raising the window glass according to the rising manipulation signal.

In addition, the rising operation signal detected within a predetermined time from when the obstacle is detected may be an operation signal for instructing the user to continuously raise the window glass by manual operation of the user.

1 is a diagram illustrating an area in which a safety control function is activated in a power window system having a safety control function. The safety control function automatically stops or lowers the window glass when an obstacle is detected while the window glass is rising.

As shown in the drawing, three regions may exist according to the upper position of the window glass. Areas A and C are areas where the safety control function is deactivated, and area B is an area where the safety control function is activated. If an obstacle is encountered while the window glass is rising in the area B, the safety control function can be activated. The area in which the safety control function is activated can be adjusted appropriately, taking into account various situations such as the size of the window glass and the rate of rise / fall, typically 4 mm to 200 mm from the top of the window.

Areas A and B are areas in which the safety control function is deactivated, and therefore, even if an obstacle is detected during the ascending of the window glass, the window glass will not stop or descend and will follow the user's switch operation.

The power window control system and its control method according to the present invention stops or lowers the window glass when an obstacle is detected during the ascending of the window glass to prevent an important part or object of the human body from being caught between the window glass and the vehicle door frame. Of course, if a rising operation signal indicating the rising of the window glass is detected within a predetermined time after the obstacle is detected during the rising of the window glass, the window glass is continuously raised according to the rising operation signal without performing the safety control function. It is effective to prevent intrusion.

DETAILED DESCRIPTION In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings which illustrate preferred embodiments of the present invention and the contents described in the drawings.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals in the drawings denote like elements. In describing the present invention, when it is determined that a detailed description of a related known configuration or function may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

2 is a block diagram illustrating a vehicle power window control system according to an exemplary embodiment of the present invention.

As shown, a vehicle power window control system according to an exemplary embodiment of the present invention includes a window driver 230, a sensor unit 240, a switch unit 210, and a window controller 220.

First, the user (driver or passenger) operates the switch unit 210 to open and close the window glass. The switch unit 210 generates an operation signal instructing to raise, lower or stop the window glass according to the user's operation.

In the operation of the switch unit 210, the window glass is operated only while the switch is continuously operated, such as an auto operation mode in which the window glass is fully opened and closed by one operation of pressing or pulling the switch, and the switch is pulled or pressed. There may be a manual operating mode that opens and closes. The switch unit 210 generates operation signals according to the auto and manual operation modes according to the operation characteristics by the user.

The window glass is opened and closed by the rotation of the drive motor 232 of the window driver 230. The drive motor 232 of the window driver 230 is controlled by the control signal of the window controller 220. The control signal for controlling the driving motor depends on the operation signal generated from the switch unit 210, that is, the user's operation of the switch unit 210 during normal operation. However, when an obstacle is detected during the rising of the window glass or an invasion of an outside person occurs during the rising of the window glass, the signal is calculated by the window controller 220.

By using the sensor of the sensor unit 240, the vehicle power window control system according to an embodiment of the present invention can know whether the window glass is raised and whether there is an obstacle while the window glass is raised.

3 is a view showing a sensor unit according to an embodiment of the present invention.

As shown, the sensor portion includes a ring magnet 360 and hall sensors 310 and 320. The ring magnet 360 is fixedly installed on the rotation shaft 340 of the drive motor, and rotates together as the drive motor rotates. Hall sensors 310 and 320 installed around the ring magnet 360 detect a change in the magnetic field according to the rotation of the ring magnet 360 and generate a pulse signal corresponding to the rotation of the ring magnet 360. Since the window glass also moves by the rotation of the drive motor, the pulse signal corresponds to the movement of the window glass. Here, the plurality of Hall sensors may be installed with any angle difference. For example, in FIG. 3, two Hall sensors are installed at an angle of 90 °, and two pulse signals having a phase difference of 90 ° are generated. The generated pulse signal is used by the window controller 220 to calculate the position and speed of the window glass.

2, the window controller 220 generates a control signal using the operation signal of the switch unit 210 and the pulse signal of the sensor unit 240, and sends the generated control signal to the window driver 230. Provide.

In more detail, the window controller 220 includes a calculator 226 and an obstacle detector 224. The storage unit 228 and the drive control unit 222 is included. The operation unit 226, the obstacle detecting unit 224, and the driving control unit 222 of the window control unit 220 may be implemented by an MPU in which a control algorithm is recorded, and the storage unit may be implemented by a semiconductor memory.

The calculation unit 226 calculates the position and relative speed of the window glass using the pulse signal received from the sensor unit 240. The sensor unit 240 generates a pulse signal corresponding to the change of the magnetic field according to the rotation of the ring magnet. In addition, a plurality of pulse signals are generated according to the number of sensors in the sensor unit. Using the period, phase, phase difference between the signals and the number of pulses per hour, the calculation unit 226 can calculate the current position of the window glass, and only whether the window glass is rising or falling. Rather, it can calculate up or down speeds (relative speeds). Therefore, the window control unit 220 according to the embodiment of the present invention always knows the current position, the moving direction, and the moving speed of the window glass, and provides it to the storage unit 228 to store it.

The obstacle detecting unit 224 detects whether there is an obstacle while the window glass is rising by using the information about the position and relative speed of the window glass.

4 is a diagram illustrating a pulse signal output from the sensor unit according to an embodiment of the present invention. The horizontal axis represents the passage of time, and the vertical axis represents the magnitude of the pulse signal output from the sensor unit. In FIG. 4, two Hall sensors are used, and the two Hall sensors generate pulse signals as shown by the change of the magnetic field according to the rotation of the ring magnet.

If the initial pulse signal period is constant, the window glass opens or closes normally. The longer pulse signal period in the latter part means that there is an obstacle during the rising of the window glass. If there is an obstacle while the window glass is rising, the driving motor is loaded, which results in a long period of the pulse signal. The obstacle detecting unit determines that the obstacle exists when the period of the pulse signal is long even though the operation signal indicating the rising is continuously generated by the user's operation of the switch unit.

Referring back to FIG. 2, the driving controller 222 generates a control signal for controlling the driving motor 232 and provides it to the window driver 230.

In more detail with respect to the driving control unit 222, the driving control unit 222, the operation signal of the switch unit 210, information on the position and relative speed of the window glass, the obstacle presence detected by the obstacle detection unit 224 The control signal for controlling the driving motor 232 is generated by receiving information on whether or not.

During the normal operation, that is, when no obstacle is detected during the rising of the window glass, the driving controller 222 generates a control signal for controlling the window glass to move according to an operation signal of the user's operation of the switch 210.

In addition, when an obstacle is detected while the window glass is being raised, the driving controller 220 of the vehicle power window control system according to an embodiment of the present invention may provide a control signal for performing one of the following three safety control functions. Can be generated. A function of stopping the rising of the window glass, moving the window glass to the position where the rising of the window glass has started, or lowering the window glass by a predetermined distance from the position where the obstacle is detected.

Accordingly, when an obstacle is detected by the obstacle detecting unit 224 during the rising of the window glass, the driving controller 220 generates a control signal for controlling the window glass to stop or lower the window glass and provides it to the window driving unit 230. This is because when the user detects an obstacle while closing the window glass by the operation of the switch unit 210 in the vehicle, a safety control function is performed so that the window glass stops or descends so that an important human body part or an object is removed from the window glass and the vehicle door frame. This is to prevent accidents caught between them.

In addition, when an obstacle is detected while the window glass is raised, the driving controller 220 may generate a control signal for controlling the window glass to be lowered by a predetermined distance from the position where the obstacle is detected. This is to stop the rise of the window glass and lower it by a predetermined distance when the human body part or the object is caught between the window glass and the vehicle door frame to more effectively remove the human body part or the object. The predetermined distance is appropriately determined in consideration of the size of the window glass, the rising / falling speed, and the like, and is usually determined in the range of about 1 mm to 100 mm.

However, when an outsider attempts to invade between the open spaces of the window glass, the driver or the passenger will try to close the window glass by operating the switch unit. In this case, if the safety control function is performed and the ascent of the window glass is automatically stopped or the window glass is automatically lowered and stopped by a predetermined distance, it is impossible to prevent the intrusion of outsiders.

Therefore, the driving controller 222 according to the embodiment of the present invention stops the execution of the safety control function or the safety control when the user selects the rising of the window glass by the operation of the switch unit 210 within a predetermined time after detecting the obstacle. After performing the function, a control signal for raising the window glass according to the operation of the switch unit 210 may be generated. For example, if the driver or passenger keeps pressing the lift switch at the moment an obstacle (external intrusion) is detected, the window glass continues to rise, causing the obstacle to get caught in the window glass and the vehicle door frame, and eventually the external intrusion. Can be prevented. This predetermined time is appropriately determined according to the size and rising / falling speed of the window glass within the range of about 1 second to 3 seconds.

When the obstacle is detected during the rising of the window glass, and the user selects the rising of the window glass within a predetermined time from when the obstacle is detected, the driving controller 220 stops the window glass or blocks the obstacle. After descending by a predetermined distance from the detected position generates a control signal for raising the window glass according to the operation of the switch unit 210.

As described above, the operation of the switch unit by the user includes an auto operation mode and a manual operation mode. The auto operation mode causes the window glass to be closed by one operation of the switch unit 210 by the user. If it is not an urgent situation (there is no external intrusion), that is, if a human body part or an object is detected while the window glass is rising, if the user unknowingly selects to raise the window glass by the auto mode operation, This can cause adverse effects such as pinching the site. Therefore, in the embodiment of the present invention, it is only to raise the window glass when the user recognizes an intrusion from the outside and continuously operates the switch of the switch unit 210 by the manual operation mode to raise the window glass. desirable.

Finally, the storage unit 228 may store information on the pulse signal, the operation signal, and the position and relative speed of the calculated window glass, and the driving unit 222, the obstacle detection unit 224, and the calculation unit may be stored. (226) and the like.

5 is a flowchart illustrating a method of controlling a vehicle power window according to another embodiment of the present invention. A vehicle power window control method will be described with reference to FIG. 5. Description of portions overlapping with the description of the vehicle power window control system will be omitted.

An operation signal for instructing ascending, descending or stopping of the window glass is generated by a user (driver or passenger) switching unit operation (S100).

The vehicle power window control method according to another embodiment of the present invention detects the generated operation signal and transfers the control signal according to the operation signal to the driving motor (S102) to drive the driving motor.

A ring magnet is installed on the rotating shaft of the drive motor, and a sensor is installed around the rotating shaft of the driving motor to generate a pulse signal using a change in the magnetic field. Using the pulse signal generated by the sensor installed around the rotation axis of the drive motor, the position and relative speed of the stationary or moving window glass is calculated (S106).

Based on the calculated position and relative speed of the window glass, it is detected whether an obstacle is present during the rising of the window glass (S106). If there is no obstacle during the rising of the window glass, the control signal according to the operation signal of the switch unit continues to transmit to the drive motor (S108).

When the obstacle is detected during the rising of the window glass, it is determined whether the rising operation signal indicating the rising of the window glass is detected within a predetermined time after detecting the obstacle (S110).

If the rising operation signal indicating the rising of the window glass is not detected within a predetermined time after the obstacle is detected during the rising of the window glass, the window glass is stopped or lowered by the safety control function (S112).

When the obstacle is detected during the rising of the window glass, if the rising operation signal indicating the rising of the window glass is detected within a predetermined time, the window glass is raised by providing a control signal according to the rising operation signal to the driving motor (S116).

After the steps S108, S112, and S116, the vehicle power window control method is terminated. If there is an operation by the user of the switch unit or an obstacle is present during the ascending of the window glass, the above-described steps are repeated.

The rising operation signal for instructing the rising of the window glass detected within a predetermined time after detecting the obstacle in the middle of the rising of the window glass is an operation signal for continuously rising the window glass by the user's manual operation.

On the other hand, when the obstacle is detected during the rising of the window glass, if a rising operation signal indicating the rising of the window glass is detected within a predetermined time, the window glass stops descending or lowers the window glass by a predetermined distance from the position where the obstacle is detected. After that, the window glass may be raised in accordance with the rising operation signal.

The invention can be practiced as a method and system, or the like. When executed in software, the constituent means of the present invention are program or code segments for performing a necessary task. The program or code segments may be stored in a computer readable recording medium or transmitted by a data signal combined with a carrier in a transmission medium or communication network. Computer-readable recording media includes any medium that can store or transmit information. Examples of computer-readable recording media include electronic circuits, memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, optical disks, hard disks, optical fiber media, radio frequency (RF). Net etc. The data signal includes any signal that can propagate over a transmission medium such as an electronic network channel, an optical fiber, air, an electromagnetic field, an RF network, or the like.

In the above described the present invention with reference to the specific embodiment shown in the drawings, but this is only an example, those of ordinary skill in the art to which the present invention pertains various modifications and variations therefrom. Therefore, the protection scope of the present invention should be interpreted by the claims to be described later, and all the technical ideas within the equivalent and equivalent ranges should be construed as being included in the protection scope of the present invention.

1 is a diagram illustrating an area in which a safety control function is activated in a power window system having a safety control function.

2 is a block diagram illustrating a vehicle power window control system according to an exemplary embodiment of the present invention.

3 is a view showing a sensor unit according to an embodiment of the present invention.

4 is a diagram illustrating a pulse signal output from the sensor unit according to an embodiment of the present invention.

5 is a flowchart illustrating a method of controlling a vehicle power window according to another embodiment of the present invention.

Claims (9)

In the vehicle power window control system which raises the window glass when there is an external intrusion during the rising of the window glass, A window driver configured to raise, lower or stop the window glass, and including a driving motor controlled by a control signal; A sensor unit installed on a rotation shaft of the driving motor and generating a pulse signal corresponding to the rotation of the driving motor; A switch unit configured to generate an operation signal for instructing a rising, falling or stopping operation of the window glass according to a user's operation; And And a window controller configured to receive the operation signal and the pulse signal, generate the control signal using the same, and provide the control signal to a window driver. The control signal stops or lowers the window glass when an obstacle is detected during the rising of the window glass, and when a rising operation signal indicating the rising of the window glass is detected within a predetermined time from when the obstacle is detected. And a signal for controlling the window glass to rise in accordance with a lift operation signal. The method of claim 1, wherein the sensor unit A ring magnet fixedly installed to the rotation shaft of the drive motor; And And a hall sensor installed around the ring magnet and generating the pulse signal according to the rotation of the ring magnet and the movement of the window glass. The method of claim 1, wherein the window control unit A calculator for calculating a position and a relative velocity of the window glass using the pulse signal; An obstacle detecting unit detecting whether an obstacle is present while the window glass is being raised by using the calculated position and relative speed of the window glass; A storage unit for storing information about the pulse signal, the manipulation signal, and the calculated position and relative velocity of the window glass; And And a driving control unit generating the control signal and providing the control signal to the window driving unit. According to claim 1, wherein the rising operation signal detected within a predetermined time from when the obstacle is detected And a control signal for continuously instructing the window glass to be raised by a user's manual operation. The method of claim 3 or 4, wherein the control signal is If an obstacle is detected during the rising of the window glass, the window glass is stopped or controlled to descend by a predetermined distance from the position where the obstacle is detected, When a rising operation signal indicating the rising of the window glass is detected within a predetermined time from when the obstacle is detected, the window glass is stopped or lowered by a predetermined distance from the position where the obstacle is detected. And a signal for controlling the window glass to rise. In the vehicle power window control method for causing the window glass to rise, if there is an external intrusion during the rising of the window glass, (a) The control signal according to the operation signal is detected by a drive motor for detecting the operation signal from a switch unit for generating an operation signal for instructing the rising, falling or stopping of the window glass according to a user selection, and for driving the window glass. Delivering; (b) calculating a position and relative speed of the window glass by using a sensor installed around a rotation axis of the drive motor; (c) detecting the presence of an obstacle during the ascending of the window glass based on the calculated position and relative speed of the window glass; And (d) detecting the obstacle in the middle of the rising of the window glass, and if there is detected a rising operation signal indicating the rising of the window glass therefrom, raising the window glass according to the rising operation signal; Vehicle power window control method characterized in that. The method of claim 6, wherein step (d) And lowering the window glass by a predetermined distance from a position where the obstacle is detected before raising the window glass according to the rising operation signal. The method of claim 6, wherein the rising operation signal detected within a predetermined time from when the obstacle of the step (d) is detected And a control signal for continuously instructing the window glass to be raised by a user's manual operation. A computer readable recording medium having recorded thereon a program for implementing the method according to any one of claims 6 to 8.

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