JP3425840B2 - Power window control device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power window control device for opening and closing a vehicle window using a power window motor, and more particularly to a window opening / closing position based on a pulse signal output from a pulse generator connected to the power window motor. The present invention relates to a power window control device having a central processing circuit for detecting

[0002]

2. Description of the Related Art As a conventional technique of this type, for example, Japanese Unexamined Patent Publication No. 7-212963 discloses that a pulse signal output from a pulse generator connected to a shaft of a power window motor is positioned at a rising (or falling) edge. The technique has been described in which the measurement of the pulse width is started at the same time when the pulse width is counted, the measurement of the pulse width is ended at the falling (or rising) edge, and the measured value of the pulse width is used as the speed data.

[0003]

However, the conventional power window control device of this type does not have an anti-theft function (hereinafter, simply referred to as "theft function"), and therefore an external force is applied to forcefully open the window. , There was a problem that it was possible to get into the car without permission.

The present invention is intended to solve the above-mentioned problems, and an object thereof is to provide a power window control device having an antitheft function.

[0005]

In order to solve the above-mentioned problems, first of all, the invention according to claim 1 defines a pulse generator connected to a power window motor, and at least a window from a pulse signal output from the pulse generator. In a power window control device having a central processing circuit for detecting the open / closed position,
When the central processing circuit has an anti-theft function for driving the power window motor to the closing side when it is detected from the pulse signal that the window is opened by receiving an external force other than the driving force by the power window motor, the central processing circuit is provided. Provide a window control device.

Further, the invention according to claim 2 is characterized in that the central processing circuit is provided with a delay function for activating the antitheft function after a lapse of a predetermined time after the ignition switch is turned off. I will provide a.

According to the third aspect of the invention, the central processing circuit has a function of stopping the anti-theft function when a signal associated with a collision accident is input from the G sensor connected to the central processing circuit. A characteristic power window control device is provided.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is an electric circuit diagram showing this embodiment, and 1 is a power window motor for electrically closing and opening a vehicle window, which is mounted inside a door or the like. Reference numeral 2 denotes a pulse generator that outputs a pulse signal according to the rotation of the power window motor 1, and for example, as shown in FIG. 2, a cover 21, a mover 22, and a slider mounted on an output gear 25 of the power window motor 1. 23, the substrate 24, and the like.

Reference numeral 3 is a controller. The controller 3 is a unit mounted on, for example, an armrest of a vehicle, and is constituted by a central processing circuit 31, a constant voltage circuit 32, a motor drive circuit 33, and an interface 34. Each of these configurations will be described in detail below.

First, the central processing circuit 31 is a portion including a microcomputer, and stores the functions shown in the flowchart of FIG. 3 in a ROM. The flowchart will be described. First, in step 101, the process is started and then the process proceeds to step 102. In step 102, it is judged whether or not the ignition switch 5 is turned off, and the OF
If it is determined that the F operation has been performed (YES), step 10
When it is determined that the OFF operation has not been performed (NO), the process returns to step 102.

Next, at step 103, the ignition switch 5 stays in the step for a certain period of time after being turned off so that the subsequent antitheft function is not activated immediately. This prevents the antitheft function from accidentally operating even if the window is opened / closed immediately after the ignition switch 5 is turned off. Upon completion of step 103, the process proceeds to step 104.

In step 104, when it is determined that the signal associated with the collision accident is input from the G sensor 4 (YES),
The process proceeds to step 105 to stop the anti-theft function described later, and if it is determined that no input has been made (NO), the process proceeds to step 106.

In step 106, it is judged whether or not a pulse signal is input from the pulse generator 2, and the input is present (YE
If it is determined to be S), the process proceeds to step 107, and if it is determined that there is no input (NO), the process returns to step 102.

In step 107, the amount of movement of the window is determined based on the input pulse signal, and if it is determined that the amount of movement exceeds a predetermined value (YES), step 108.
If it is determined that the movement amount is small (NO), the process returns to step 102.

In step 108, the control for driving the power window motor 1 to the closing side to close the window is executed, and the process proceeds to step 109.

In step 109, it is judged whether or not the window has reached the upper end of the window frame based on the input pulse signal. If it is judged that the window has reached the upper end (YES), the process proceeds to step 110, and it does not reach (NO). If it judges, it returns to step 108.

In step 110, control of the power window motor 1 is stopped to stop driving the window, and the process returns to step 102. Step 10 of the flowchart described above
6 to 110, the anti-theft function is executed.

The central processing circuit 31 is a constant voltage circuit 3.
2, the motor drive circuit 33, the interface 34, the G sensor 4 and the ignition switch 5 are connected. The G sensor 4 is a sensor that derives a signal when a vehicle has a collision accident, and may be a sensor used in an airbag system, for example.

[0019]

The present invention provides a power window control device including a pulse generator connected to a power window motor and a central processing circuit for detecting at least an opening / closing position of a window from a pulse signal output from the pulse generator. When the central processing circuit has an anti-theft function for driving the power window motor to the closing side when it is detected from the pulse signal that the window is opened by receiving an external force other than the driving force by the power window motor, the window is forced. It is possible to prevent theft from opening the car and trying to get into the car.

Further, since the central processing circuit has a delay function for activating the anti-theft function after a lapse of a certain time after the ignition switch is turned off, even if the window is opened / closed immediately after the ignition switch is turned off. , The anti-theft function does not work by mistake.

Further, since the central processing circuit has a function of stopping the anti-theft function when a signal associated with a collision accident is input from the G sensor connected to the central processing circuit, when a collision accident occurs, It is possible to prevent the anti-theft function from interfering with occupant rescue.

[Brief description of drawings]

FIG. 1 is an electrical circuit diagram showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a power window motor and a pulse generator shown in FIG.

FIG. 3 is a flowchart illustrating a function included in a central processing circuit shown in FIG.

[Explanation of symbols]

1 power wind motor 2 pulse generator 3 controller 31 Central processing circuit 4 G sensor 5 ignition switch

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Claims (3)

(57) [Claims] 1. A pulse generator (2) connected to a power window motor (1), and a central processing circuit (31) for detecting at least an opening / closing position of a window from a pulse signal output from the pulse generator (2). In the power window control device having the above-mentioned, when it is detected from the pulse signal that the window is opened by receiving an external force other than the driving force of the power window motor (1), the power window motor (1) is driven to the closed side. A power window control device characterized in that the central processing circuit (31) has a prevention function. 2. The central processing circuit (31) according to claim 1, wherein the central processing circuit (31) has a delay function for activating the anti-theft function after a predetermined time has passed after the ignition switch (5) was turned off. Power window controller characterized by. 3. The invention according to claim 1 or 2, wherein the antitheft function is stopped when a signal associated with a collision accident is input from the G sensor (4) connected to the central processing circuit (31). A power window control device characterized in that a central processing circuit (31) has a function.