JPH07310471A - Window control device for vehicle with learning function - Google Patents

Abstract

PURPOSE:To change a detection judgment value to detect a foreign matter putting-between state in accordance with a learning result by way of learning change of rotational speed of a motor in a long term and in a short term. CONSTITUTION:A motor 1, a driving circuit 2, a sensor circuit 3, a control switch 4 and a control circuit 5 are furnished. The motor 1 is provided on a window glass opening and closing device of a vehicle. The driving circuit 2 is connected to the motor 1. The sensor circuit 3 derives a signal corresponding with opening and closing speed of a window glass. The control switch 4 is provided on a driver's seat of the vehicle. The control circuit 5 derives a signal to the driving circuit 2 in accordance with both of the signals from the control switch 4 and the sensor circuit 3 and controls the motor 1. The control circuit 5 is furnished with an arithmetic circuit 51 and a memory 52. The arithmetic circuit 51 has a function to store a sensor data input from the sensor circuit 3 in the memory 52 and a function to control the motor 1 in accordance with the sensor data stored in the memory 52.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a vehicle window control device capable of avoiding a trapping accident by reversing a motor or the like when a foreign substance is caught in a window glass, and more particularly, to a foreign matter trapping state. The present invention relates to a vehicle window control device with a learning function capable of updating and learning a detection determination value for detecting from a rotation state of a motor based on sensor data accumulated in a memory at any time.

[0002]

2. Description of the Related Art Conventionally, this type of technology is disclosed in, for example, Shoukai 55.
31985. According to the prior art, a ripple detection circuit that generates a rectangular wave signal corresponding to ripple included in a current flowing through a motor, and a self-detection circuit when the interval becomes longer than a predetermined value in response to the interval of the rectangular wave signal from the ripple detection circuit. The holding circuit cuts off the bias current of the transistor of the holding circuit. That is, in this conventional technique, the detection determination value for detecting the pinched state of the foreign matter from the rotation state of the motor is constant.

[0003]

However, the rotation of the motor changes due to various factors. For example, in the long run, the sliding resistance when the window glass opens and closes increases due to rattling of the window frame due to the deterioration of the vehicle, or the motor deteriorates and the motor rotation speed becomes slower than that of a new vehicle. became. In the short term, the rotation speed of the motor slowed down due to the influence of temperature changes inside and outside the vehicle, fluctuations in the power supply voltage, negative pressure generated during high-speed running, and the like. Therefore, when the detection determination value for detecting the entrapped state of the foreign matter is constant, as in the above-described conventional technique, when a deterioration phenomenon occurs due to long-term use or when various types of short-term use occur. In some cases, erroneous detection may occur when affected by, and it may be difficult to avoid a trapping accident.

[0004]

SUMMARY OF THE INVENTION The present invention is to solve the above-mentioned problems, and a detection judgment value for detecting the entrapped state of foreign matter by learning the change in the rotation speed of the motor in the long term and in the short term. The purpose is to change based on this learning result.

In order to solve the above-mentioned object, the present invention provides
A motor provided in a window glass opening / closing mechanism of a vehicle, a drive circuit connected to the motor, a sensor circuit for deriving a signal corresponding to the opening / closing speed of the window glass, an operation switch provided in a passenger seat of the vehicle, In a vehicle window control device including a control circuit that receives a signal from an operation switch and the sensor circuit and guides a signal to a drive circuit according to the both signals to control the motor, the control circuit is an arithmetic circuit. A memory is provided, and the arithmetic circuit has a function of accumulating sensor data input from the sensor circuit in the memory for a predetermined period and a function of controlling a motor based on the sensor data accumulated in the memory. A window control device for a vehicle with a learning function is provided.

Further, according to the present invention, the arithmetic circuit stores the sensor data input from the sensor circuit in the memory for a relatively long period in units of year and month, and the long-term accumulated data stored in the memory. There is provided a vehicle window control device with a learning function having a function of controlling a motor based on the above.

Further, the present invention provides a window control for a vehicle with a learning function, wherein the arithmetic circuit has a function of accumulating sensor data input from the sensor circuit in the memory, at least on condition that the vehicle is stopped. Provide a device.

Further, the present invention is a vehicle with a learning function, wherein the arithmetic circuit has a function of accumulating sensor data input from the sensor circuit in the memory, at least on condition that the motor is being driven to the closing side. A window control device is provided.

Further, according to the present invention, the arithmetic circuit accumulates the sensor data input from the sensor circuit in the memory for a relatively short period in units of hours, minutes, seconds, and short-term accumulated data accumulated in the memory. There is provided a vehicle window control device with a learning function having a function of controlling a motor based on the above.

The present invention is also for a vehicle with a learning function, wherein the arithmetic circuit has a function of adding both the long-term accumulated data and the short-term accumulated data, and a function of controlling a motor based on the added data. A window control device is provided.

Further, according to the present invention, the control circuit has a voltage detection circuit for detecting a voltage applied to the motor, and the arithmetic circuit corresponds to the voltage data input from the voltage detection circuit with the sensor data from the sensor circuit. There is provided a vehicle window control device with a learning function, which has a function of additionally inputting and converting the sensor data based on the voltage data.

[0012]

[First Embodiment] A preferred embodiment according to the present invention is shown in FIG.
~ It demonstrates based on FIG. First, FIG. 2 is a characteristic diagram showing long-term aging change, in which the initial characteristic is shown by a solid line and the characteristic after aging is shown by a virtual line. As shown in FIG. 2, the rotational speed of the motor 1 has become slower than the initial value, that is, a new vehicle, due to long-term aging.

FIG. 3 is a characteristic diagram showing a short-term change. The characteristic when the vehicle is stopped is shown by a solid line,
The characteristic when the rotation speed of the motor 1 becomes slower due to the influence of the negative pressure generated during high-speed running is shown by a virtual line.
As shown in FIG. 3, as the window glass is closed, the window glass is more likely to be affected by the negative pressure, and the rotation speed of the motor 1 is significantly reduced near the fully closed position.

Further, FIG. 4 shows the characteristic that the rotation speed of the motor 1 changes according to the voltage fluctuation of the DC power supply 7. In this embodiment, such a change in the rotation speed of the motor 1 is learned by the control circuit 5 to always obtain an appropriate detection determination value.

This embodiment will be described below. In the drawings, 1 is a motor, 2 is a drive circuit, 3 is a sensor circuit, 4 is an operation switch, 5 is a control circuit, 6 is a vehicle speed sensor, 7 is a DC power supply, and 8 is an ignition switch.

First, the motor 1 is provided in the window glass opening / closing mechanism of the vehicle and is connected to the arithmetic circuit 51 of the control circuit 5 via the drive circuit 2. A sensor circuit 3 is attached to the motor 1.

The sensor circuit 3 is a sensor for detecting the rotation of the motor 1, and is configured to output a pulse signal every time the motor 1 rotates a predetermined number of times. The pulse signal is
The signal corresponds to the opening / closing speed of the window glass. The sensor circuit 3 uses, for example, a sensor element such as a Hall IC or a photo interrupter, and is connected to the arithmetic circuit 51 via the interface circuit 55 of the control circuit 5.

The operation switch 4 is a switch provided on a passenger seat of the vehicle, for example, an armrest, and is an UP / DOWN switch 41, 4 for manually opening / closing the window glass.
2 and AUTO for opening and closing the window glass automatically
It is composed of UP and DOWN switches 43 and 44,
It is connected to the arithmetic circuit 51 of the control circuit 5.

The control circuit 5 controls the motor 1 by receiving signals from the operation switch 4 and the sensor circuit 3 and deriving signals from the drive circuit 2 according to the signals. The control circuit 5 includes an arithmetic circuit 51, a memory 52, a voltage detection circuit 53, and a low voltage circuit 54.

The arithmetic circuit 51 is composed of a microcomputer, and has a function of accumulating the sensor data input from the sensor circuit 3 in the memory 52, and controls the motor 1 based on the sensor data accumulated in the memory 52. You are programming the features that you want.

More specifically, the arithmetic circuit 51 stores long-term accumulated data accumulated over a relatively long period in units of year / month and short-term accumulated data accumulated over a relatively short period in units of hour / minute / second. The long-term accumulated data and the short-term accumulated data accumulated in the memory 52 are added, and the function of controlling the motor 1 based on the added data is programmed.

The arithmetic circuit 51 has a function of accumulating the sensor data input from the sensor circuit 3 in the memory 52 at least on condition that the vehicle is stopped and the motor 1 is being driven to the closing side. have. This function is provided to eliminate the influence of negative pressure during high-speed traveling and to store only data due to aging as much as possible, and is programmed in the arithmetic circuit 51. It should be noted that whether or not the vehicle is stopped is determined by an input signal from the vehicle speed sensor 6.

Further, the arithmetic circuit 51 is the sensor circuit 3
The sensor data is input in correspondence with the voltage data input from the voltage detection circuit 53, and the function of converting the sensor data based on the voltage data is programmed. This function is provided in the memory 52 to reduce the amount of data stored. As shown in FIG.
The rotation speed of the motor 1 changes according to the voltage fluctuation of the DC power supply 7. However, if the data is stored for each voltage, the amount of storage becomes enormous. Therefore, in the case of this embodiment, once the sensor data is input in association with the voltage data input from the voltage detection circuit 53, this sensor data is calculated to a predetermined voltage, for example, a value of 16 [volt], and after this conversion. Data is officially stored in the memory 52.

Next, the operation of the embodiment having the above structure will be described. First, when the arithmetic circuit 51 determines that the AUTO UP switch 43 has been turned ON by a signal from the operation switch 4 and that the vehicle is stopped by a signal from the vehicle speed sensor 6, the arithmetic circuit 51 connects to the gate connected to the sensor circuit 3. Open and sample the signal from the sensor circuit 3. At this time, a signal is also input from the voltage detection circuit 53 at the same time. Then, based on the voltage data obtained from the signal from the voltage detection circuit 53, the sensor data indicating the rotation speed of the motor 1 obtained from the signal from the sensor circuit 3 is obtained.
Convert to a value of 16 [volts]. This converted data is stored in the memory 52 together with the data already stored in the memory 52, and the learning storage value D is calculated by obtaining the average value.
This learned memory value D is as shown by the solid line in FIG. 5 when plotted for each opening / closing position of the window glass.

Next, the procedure for calculating the detection judgment value G from the learned storage value D will be described with reference to the flow chart shown in FIG. After starting at step 100,
Go to step 101. Step 101 is a step of monitoring whether or not a pulse signal is input from the sensor circuit 3, and the process proceeds to step 102 when the determination is YES.

Step 102 is a step of averaging sensor data input while the window glass is moving for a certain section to calculate an average value A of the sensor data. In this embodiment, the average value A is calculated by averaging the sensor data input while the window glass position has moved from 8 mm ahead to the current position. Following this step, the procedure advances to step 103.

In step 103, the average value A calculated above is calculated.
1 based on the voltage data input from the voltage detection circuit 53
This is a step of obtaining the converted value B of the sensor data by converting the value into 6 [volt]. Subsequent to the step, step 10
Go to 4.

In step 104, the learning storage value D corresponding to the section in step 102 is read from the memory 52 and averaged to calculate the average value C of the accumulated data. Subsequent to the step, step 105
Proceed to.

In step 105, the average value C of the accumulated data is
Is a step of calculating the difference between the converted value B of the sensor data and the conversion value B of the sensor data, and this difference is obtained as the sliding resistance value E. Following this step, the procedure advances to step 106.

In step 106, the learning storage value D at the next position following the current position is read from the memory 52, and the process proceeds to step 107 following the step.

In step 107, the learning memory value D and the sliding resistance value E are added, and the allowable value F is further added to this to calculate a detection determination value G. in this way,
As a result of calculating the detection determination value G through the above steps 101 to 107, the detection determination value G draws a curve along the learning storage value D as shown in FIG. In addition, 2 in FIG.
The dotted chain line H is a characteristic that is the sum of the learning memory value D and the sliding resistance value E.

[0032]

Since the present invention has the above-mentioned structure and operation, it has the following effects. (1) Even if the rotation of the motor changes due to a deterioration phenomenon associated with long-term use or various effects that occur during short-term use, the change is learned to determine whether or not the pinching state is possible. Since the detection determination value of is constantly changed, a trapping accident will not be erroneously detected. (2) Since the detection determination value is calculated based on the long-term accumulated data accumulated in the memory over a relatively long period in units of year / month / day, the accuracy of the learning ability is high. (3) Since the sensor data is stored in the memory at least on condition that the vehicle is stopped, it is possible to eliminate the influence of negative pressure during high-speed traveling and store only the data due to aging as much as possible. it can. (4) Since the detection determination value is calculated based on the short-term accumulated data accumulated in the memory over a relatively short period in units of hour, minute, second, the detection determination value can be calculated and updated in real time. (5) Since the sensor data from the sensor circuit is converted based on the voltage data input from the voltage detection circuit, the amount of data stored in the memory can be reduced.

[Brief description of drawings]

FIG. 1 is an electric circuit diagram showing a preferred embodiment of the present invention.

FIG. 2 is a characteristic diagram showing a state in which the moving speed of the window glass operated by the motor shown in FIG. 1 changes over time over a long period of time.

FIG. 3 is a characteristic diagram showing a state in which the moving speed of the window glass operated by the motor shown in FIG. 1 changes in a short term.

FIG. 4 is a characteristic diagram showing a state in which the moving speed of the window glass operated by the motor shown in FIG. 1 changes according to the voltage fluctuation of the DC power supply.

5 is a characteristic diagram illustrating a process of calculating a detection determination value by the arithmetic circuit shown in FIG.

6 is a characteristic diagram illustrating a result of calculating a detection determination value by the arithmetic circuit illustrated in FIG.

7 is a flowchart illustrating a main part of a function programmed in the arithmetic circuit shown in FIG.

[Explanation of symbols]

 1 Motor 2 Drive Circuit 3 Sensor Circuit 4 Operation Switch 5 Control Circuit 6 Vehicle Speed Sensor 7 DC Power Supply 51 Arithmetic Circuit 52 Memory 53 Voltage Detection Circuit

Claims (7)

[Claims] 1. A motor (1) provided in a windowpane opening / closing mechanism of a vehicle, a drive circuit (2) connected to the motor (1), and a sensor circuit for deriving a signal corresponding to the opening / closing speed of the windowpane. (3), an operation switch (4) provided in the passenger seat of the vehicle, a signal from the operation switch (4) and the sensor circuit (3), and a signal to the drive circuit (2) according to the both signals. And a control circuit (5) for deriving and controlling the motor (1), wherein the control circuit (5) includes an arithmetic circuit (51) and a memory (5).
2), the arithmetic circuit (51) stores the sensor data input from the sensor circuit (3) in the memory (52) for a predetermined period, and the sensor stored in the memory (52). Motor based on data (1)
Vehicle window control device with a learning function having a function of controlling the vehicle. 2. The invention according to claim 1, wherein the arithmetic circuit (51) stores the sensor data input from the sensor circuit (3) over a relatively long period in units of date. ) And a function for controlling the motor (1) based on the long-term accumulated data accumulated in the memory (52), the window control device for a vehicle with a learning function. 3. The invention according to claim 2, wherein the arithmetic circuit (51) stores the sensor data input from the sensor circuit (3) in the memory (52) on condition that the vehicle is stopped. ) A vehicle window control device with a learning function that has a function of accumulating in. 4. The sensor according to claim 2, wherein the arithmetic circuit (51) inputs from the sensor circuit (3) on condition that at least the motor (1) is being driven to the closing side. Data in the memory (52)
A vehicle window control device with a learning function that has a function of accumulating in a vehicle. 5. The invention according to claim 1, wherein the arithmetic circuit (51) outputs the sensor data input from the sensor circuit (3) to the memory (52) over a relatively short period in units of hours, minutes and seconds. ) And a function for controlling the motor (1) based on the short-term accumulated data accumulated in the memory (52), the vehicle window controller with a learning function. 6. The invention according to claim 5, wherein the arithmetic circuit (51) adds a function of adding both the long-term accumulated data and the short-term accumulated data, and a motor (1) based on the added data. A vehicle window control device with a learning function having a control function. 7. The invention according to claim 1, wherein the control circuit (5) has a voltage detection circuit (53) for detecting a voltage applied to the motor (1), and the calculation is performed. A circuit (51) inputs the sensor data from the sensor circuit (3) in association with the voltage data input from the voltage detection circuit (53), and converts the sensor data based on the voltage data. A vehicle window controller with a learning function that has functions.