JPS5983218A - Driving controller of electromotive equipment on car - Google Patents

Abstract

PURPOSE:To detect the overload of an equipment on a car with a high sensitivity, by providing a position detector and changing the overload reference level in accordance with the output of this detector. CONSTITUTION:A position detector SE consisting of a reflective photo sensor whose tip is projected to the hollow part of a weather strip 8 is provided on a door 1 of a side window. When a window glass 2 rises to deform the weather strip 8, the detector SE detects the reflected light. At this time, when the deformation of the weather strip 8 is increased in accordance with rise of the glass 2, the current of a motor which drives the glass 2 is increased proportionally. Consequently, the overload reference level for stopping the rotation of the motor is changed in accordance with the rise position of the window glass, namely, the output of the detector SE to detect the overload with a high sensitivity, namely, preventing the danger.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to position control for setting or positioning vehicle side windows, roof panels, seats, mirrors, etc., and particularly to position control for positioning the electric mechanisms that drive them. Regarding overload prevention.

For vehicles, side windows (driver's door window, passenger's door window, driver's rear door window, and passenger's rear door window), sunroof (roof panel)
In some cars, mirrors inside and outside the seat seats 1-9 are electrically driven. These devices generally
The motor is energized by closing the forward/reverse energizing circuit of the motor using an operation switch. There is also a system in which the current position of the movable body is monitored from L:L, and the movable body is placed vertically at a position instructed by key switch operation.

The problem with this type of on-vehicle electric equipment is that if a foreign object gets caught in the drive mechanism, such as an IJ with an object placed on a movable body or a person applying force, the motor will be overpowered. Even though the mechanical force <r'x, the mechanical force may not slip and the drive source may become overloaded, causing damage to personnel or mechanical force. In addition, over time, due to wear and play in the 1st mechanical part, the vertical positioning of the 1S moving part may become inaccurate.

Step 1: Detecting an overload on the drive source.If >i electric motor is used, it is sufficient to monitor the current flowing through the motor. However, even if the Lf side window is driven (closed), there will be no abnormal force 1 because the motor load will increase due to the force 1 intersecting with the window glass and weather strip before the h 1 is fully opened. ), the current flowing through the motor changes significantly. In order to reliably drive the window glass to the fully closed position, even if the weather strip acts as a load on the motor, change t: (The judgment level of the load current should be increased so as not to be judged as '. However, If this is done, abnormalities such as when a person's hand gets stuck in a window glass cannot be immediately determined, and there is a risk of injury to the person.

Therefore, a movement amount detector such as a rotary encoder is provided in the drive mechanism to grasp the position of the window glass, and the corresponding current data (load data) for each position stored in advance in the memory is referred to. It has been proposed to distinguish between an increase in load during normal times and an increase in load during abnormal times. According to this, a current level close to the magnitude of the load during normal operation can be used as a reference level, and it is possible to determine whether there is an abnormality and to fully open the engine reliably. However, in this case, high resolution b is required for high accuracy.
) (that is, an expensive) rotary encoder (which requires leakage, noise, etc.) (which may cause miss-counting and positional deviations).

The primary purpose of the present invention is to quickly stop operation in the event of an abnormality, and to reliably drive on-vehicle equipment to the limit position even if there is a normal load change during drive, and to achieve high positioning accuracy on-board electric equipment. A second object of the present invention is to provide a drive control device.

In order to achieve the second objective, the present invention compares the magnitude of the motor load with reference data to determine the presence or absence of an abnormality, and also detects fluctuations in the load even when the position of the movable body on the vehicle is normal. A position detector is provided to detect whether or not the position occurs, and the reference data is changed in accordance with the output of this position detector. According to this, when driving a window glass, for example, it is detected that the top edge of the window glass reaches the position where the weather strip deforms, a reference level is set high (that is, a normal load increase), and the window glass is moved to the fully open position. can be driven. When the position detector detects that the window glass is at a position where large load fluctuations do not occur, the reference level is set to a level that is slightly higher than the actual load level, thereby preventing a person's hand from getting caught in the window glass. Occurs in cases, etc.
It can sensitively detect load changes and immediately stop or reverse the drive.

For example, when driving a window glass, there are cases where it is desired to set the opening degree to 1/3.1/2.2/3, etc. in addition to fully open and fully open. To perform such positioning accurately,
It is preferable to detect the position by counting the number of pulses using a motion amount detector (movement signal generator) such as a rotary encoder. Therefore, in a preferred embodiment of the present invention, two detectors are provided: a motion amount detector such as a rotary encoder, and a position detector that detects a predetermined position, and the reference position is determined according to the output of the position detector. The position is determined by obtaining the amount of movement relative to this reference position from the motion amount detector. According to this, the on-vehicle equipment can be accurately positioned for a long period of time.

EMBODIMENT OF THE INVENTION Hereinafter, the present invention for controlling opening and closing of a side window on a vehicle will be described in detail.

FIG. 1a shows an electric mechanism for raising and lowering a window glass 2 of a passenger door 1 of an automobile.

A pin at one end of link arms 31 + 32 is connected to each of the upper and lower guide rails fixed to the window glass 2, and a lifting arm that engages with the other end of the link arm 32 is connected to a sector gear 4 connected thereto. drives up and down. The sector gear 4 meshes with a wheel of a worm wheel assembly 5, and the rotating shaft of the electric motor Ma is coupled to the worm meshing with the wheel. As a result, motor M
When a rotates forward, the sector gear 4 rotates clockwise in FIG. 1a, pushing the glass 2 upward. When the motor Mb rotates in the opposite direction, the sector gear 4 rotates counterclockwise to lower the glass 2.

In the worm wheel assembly 5, a ring-shaped permanent magnet 7a is fixed to a rotating disk fixed to the wheel shaft, and a Hall element and its magnetic field detection signal are processed on the outer surface of the permanent magnet 7a. Hall IC units 1-68, which are integrally integrated with electric circuits, are installed facing each other. Since the permanent magnet 7a is polarized and magnetized in the circumferential direction, when the wheel rotates, the Hall IC unit 6a generates a sinusoidal electric signal. The combination of the sector gear 4 and the worm wheel assembly 5 is shown in FIG. 1b, and the combination of the permanent magnet 7a of the worm wheel assembly 5 and the Hall IC unit 6a is shown in FIG. 1C.

A position detector SE having a tip protruding from the hollow part of the weather strip 8 is provided at the top of the door 1.

To explain with reference to Fig. 2e, the eight position detectors are
In this embodiment, a reflective photosensor is used, including a light emitting diode LEI, a first transistor p'r i
, condensing lens LZI, LZ2. Prism PZ], P
It is composed of Z2 etc. On the inside of weather strip 8,
The position P facing the position detector SE when it is deformed
(Small circle) is painted white to increase light reflectance.

If the window glass 2 is spaced by a predetermined amount or more as shown in FIG.
Therefore, the phototransistor PT does not detect light. However, Fig. 2b.

When the window glass 2 deforms the weather strip 8 as shown in FIG. 2c or 2d, the light emitted from the light emitting diode LEI is reflected by the weather strip 8 and detected by the photo transistor PTI. Ru. In other words, when the window glass 2 is above the position shown in FIG. 2b, the position detector SE detects the reflected light, and when the window glass 2 is below the position shown in FIG.
does not detect reflected light.

When the glass 2 is being driven upward by driving the motor Ma in normal rotation, and the tip of the glass 2 has not yet hit the weather strip 8 as shown in FIG. 2a, the motor current is low and its fluctuation is low. is small. However, when the glass 2 rises and hits the weather strip 8 as shown in Figure 2b, the motor current (motor load) then increases and the second
When the weather strip 8 is compressed as shown in figure c, the motor current further increases, and when the weather strip 8 is completely compressed as shown in figure 2d, the electric mechanism stops and the motor current increases rapidly. do. 2nd d from window fully open
FIG. 3a shows the change in the current of the motor Md while the glass 2 is being driven until the window is fully opened as shown in the figure. The motor current corresponds to the mechanical load of the motor in a known manner, and there is a proportional relationship as shown in FIG. 3b.

The driver's door, driver's rear door, and passenger's rear door are each equipped with an electric drive mechanism with exactly the same configuration as the electric drive mechanism described above, and the electric motors of each electric drive mechanism also have dual characteristics. Show similar properties.

FIG. 4a shows the configuration of an electric control system that controls each of the electric drive mechanisms for the four windows in the duplex. The main body of this electrical control system is Microco.

A computer 9 is connected to its input port RO-R5 with window position indicating key switches 11 to 20, and its output port is
Transistors 21 and 22 for key-in reading are connected to R1 to R6 and R7.

The output terminal of the position detector SE is connected to the input port R13, and the automatic control set key switch IO that enables automatic positioning control of the site window is connected to the input port R15. To R14,
The output terminal of a pulse generator PG that generates tarok pulses for time counting is connected.

The motor of the electric drive mechanism of each door is output port O6-07
Forward/reverse rotation is controlled by the output. For example, 0°, o2. o
When high level H is set to 4 or o6, motor Md (driver seat door) respectively.

Ma (passenger seat door), Mab (passenger seat rear door)
Or Mdb (driver's seat rear door) is energized for forward rotation,
When high level F1 is set to output port Ol r oa + 05 or 07, motors Md (driver seat door), Ma (passenger seat door), Mab are activated respectively.
(passenger seat rear door) or Mdb (driver seat rear door) is biased by jφ. In the worm wheel assembly 5, ring-shaped permanent magnets 7d, 7a, 7ab and 7db are mechanically coupled to the motor output shaft, and a Hall IC unit 6d faces each of them.

6a, 6ab, and 6db each constitute a rotary encoder, and each applies a pulse output to the input port of the microcomputer 9 to 3 to KO.

The output of the amplifier AMP is applied to the A/D conversion input terminal R12 of the microcomputer 9, and the voltage of the motor current detection resistor r is applied to the amplifier AMP via a relay.

The voltage across resistor r is proportional to the motor current, that is, the motor load. Output port PO.

By applying a high level H to Pi, R2 or R3, the motors Md (driver seat door) and Ma
A voltage proportional to the load current of (passenger seat door), Mab (passenger seat rear door), or Mdb (driver seat rear door) is selectively applied to the microcomputer '99.

Data (4 bits) for setting the A/D conversion range is set in the output ports R8 to R11.

In each part of the electric circuit, a power supply circuit shown in Fig. 4b is connected to a constant voltage V.
Apply c c.

FIG. 4c shows the external appearance of one of the switches 11-17 12. Note that the other switches 13 to 17 have exactly the same structure as the switch 12. The switch 12 is a two-pole switch, and in a steady state, the up instruction side and the down instruction side protrude equally as shown in FIG. 5a, but when the up side is pressed, the switch protrudes equally as shown in FIG. Then, rotate the movable contact to make contact with one fixed contact (the window opening is the indicator contact). When the push-down blade disappears, the steady state returns as shown in FIG. 5d, and the movable contact returns to the neutral position where it does not come into contact with either of the two fixed contacts. When the down side is pressed, the 5th c
As shown in the figure, the movable contact is rotated to contact the other fixed contact (window closing instruction contact). When the push-down blade disappears, it returns to a steady state as shown in Figure 5d, and the movable contact
Return to the neutral position where it does not touch either of the two fixed contacts. The switch 11 has substantially the same mechanical structure as the switch 12, but it also has two flexible contacts, one of which is used as a window-opening contact and the other as a window-closing command contact. , the two fixed contacts are both stop instruction contacts. When this switch 11 is pressed relatively lightly on the up side, the movable contact contacts the flexible window opening indicator contact and instructs the motor to rotate forward; however, when pressed more strongly, the flexible window opening indicator contact changes to the movable contact. While touching the stop instruction contact, the motor is instructed to stop.

When you press the down side relatively lightly, the movable contact contacts the flexible window close instruction contact and instructs the motor to reverse, but
When pushed even harder, the flexible window closing instruction contact contacts the movable contact and another stop instruction contact, instructing the motor to stop.

Switches 18 and 19 are installed in the keyhole of the driver door, and when the unlock key is inserted into the keyhole and turned in the locking direction, switch 18 is closed and the microcomputer 9 is closed.
instructs the driver to close the rear door window. When the unlocking key is inserted into the keyhole and turned in the unlocking direction, the switch 19 is closed and the microcomputer 9 is instructed to open the driver's rear door.

The microcomputer 9 performs initialization in response to power-on, detection of the limit position and current position in response to the switch 10's idle response, operation reading of the window positioning instruction switches 11 to 19, and window control instructed by the switch operation. There is a built-in program to do this. The outline of the control operation according to this program is as follows.

A. When the power supply Vcc is applied, the input/output capo-1 and internal registers (including those for counting and flags) are initialized. The output boat is set to Sera 1 with all motors stopped.
~do.

B. Wait for window control instruction (input capo-h R], 5 = H: switch 10 closed). When R15=H or when R15=H, window opening/closing instruction switches 11 to 1
Wait for switch operation in step 9. When a switch is operated, detection of the base position and limit position and interpretation of the switch operation are started.

C0 base point position detection and limit position detection are first performed for the electric drive mechanism of the side window corresponding to the switch operated first (=J).

While this is being executed, other switch operations are not read. However, the stop instruction from the switch 11 is always read, and when the instruction is given, the motor is stopped and the processing state up to that point is cleared. When the base point position detection and limit position detection are completed, a positioning flag Ei (i is assigned to the target window) is set. This flag is held while the power supply Vcc is turned on. When the flag is set, the base point position detection and limit position detection are not performed, and window opening/closing control is performed to position the window glass at a position according to the result of decoding the switch operation.

D. Decoding of key switch operation begins in response to the start of switch operation, and the same switch is repeatedly closed.

Decipher the opening mode and determine the degree of window opening and quietness (fully closed, 1/3 open,
1/2 open, 2/3 open, and fully open) instruction data is created and set as the target value.

E. Since the drive speed of the glass 2 is relatively slow, the motor drive starts from the starting point of the switch operation, and when the switch operation is decoded within a predetermined time, the motor drive continues until the actual position of the glass reaches the target position. Continue. If the code cannot be decoded within a predetermined time, the motor is stopped.

F, switches 11 to ■7 are each assigned to Jb of the controlled window, so one of the 3 and the output boat P is assigned to the six capos -1-KO~ corresponding to the operated switch.
Select one of O to P3 and select Hall IC unit 1 of the rotary encoder connected to the motor to be driven.
-61 is set to read, and the resistor r connected to the motor is set to A/D conversion read, and the switch No,
and depending on which side (up side, down side) it is closed, identify one of the output ports Oo~07 and select it.
Set high level belt I.

G. When the motor is set to drive in step F above, the up count (forward rotation up) or down count (reverse rotation down) is determined in the rotation direction of the motor, and the output pulse of the Hall IC unit is run 1- to calculate the current value. While monitoring the position, the motor current is A/D converted to monitor the load, the range of movement of the glass is determined from the current position, the reference data assigned to that range is read from the internal ROM, and the A/D converts the motor current to A/D.
The converted data is compared with this and the motor is stopped if there is an overload. Also, the motor is stopped as soon as the current position matches the target position.

In addition, in reading the key switch mentioned above.

The groups of switches 11 and 18, 19 and the groups of 12 to 17 are read in time division. In other words, transistor 21
and 22 are turned on alternately, and when 21 is on, the input capo-h RO" R5 is turned on with switch 11.18.
．． 19 is assigned to read the operation data, and when 22 is on, input ports RO to R5 are assigned to switches 12 to 17.
Assigned to read operation data.

Table 1 shows the correlation between the operations of the switches 11 to 19, the status of the input/output ports, and the contents of the instructions. If not listed in Table 1, N
o, 1 to 12 appears on the input capo-l-RO to R7, the microcomputer 9 starts reading the switch operation mode, and also sets the reference point setting flag E (7th
If the base point determination flag E corresponding to case No is not set, the process proceeds to base point determination, and if it is set, the process proceeds to window opening/closing control. In the switch operation mode, first the inputs of the input ports RO to R7 are read and data A shown in Table 2 is stored in the register. This data A is held until the base point determination or the window opening/closing control is completed, but when the switch input is not in a predetermined mode, the window control flag is cleared and the window opening/closing control is stopped there. When starting point determination is in progress, data A is not cleared and reference point determination does not stop. When the power is turned on and the switch 10 is closed, if base point determination is executed once for each window, even if the switch 10 is opened or closed while the power is turned on, a flag E indicating that base point determination has been completed will be set. is not cleared.

The base point is not determined again.

During switch operation reading (input reading), the microcomputer 9 monitors the switch operation and creates data B (see Table 3). If this data B indicates the switch operation mode shown in Table 4, that is, any of the data Ba to 13c in Table 3, the switch operation reading (input reading) is terminated and the reference point setting control or window Concentrate on opening/closing control.

Data B is predetermined (data B a = B c )
Otherwise, as described above, if it is window opening/closing control, the window control flag is cleared, the control is stopped, and data B is cleared. If it is base point determination control, data B is cleared, but control continues.

When the base point determination is completed, base point data D (see Table 6) corresponding to data A is stored in a register. That is,
In the case of base point determination in response to the up or down operation of the switch 11, the base point data Dd is used, and in the case of base point determination in response to the up or down operation of the switch 15, the base point data D is used.
a, the base point data Dab in the case of base point determination in response to the up or down operation of the switch 16, and the switch 1
In the case of base point determination in response to the up or down operation of No. 7, the base point data Ddb is stored in the registers assigned to each (see Table 6).

While the motor is being driven, the current position data is stored and updated in the current position register (see Table 5) assigned to the motor (window of each seat). In other words, every time the output of the Hall IC unit (one of 6d, 6a, 6db, 6ab, corresponding to the drive motor) changes from I to L, or vice versa, if the forward rotation is activated. 1 increment (- mode, if reverse energization, updates the contents of the current position register in 1 decrement mode.

2nd table data A 3rd table data B 4th table data Ba Switch operation mode data that was closed again after less than 1 sec had passed since the knee became quiet Bb 1 see after the knee became closed The switch operation mode data Bc became quiet again within 1 sec, and then closed again after more than 1 sec. The switch operation mode then closed again after ↓sec, JJ, etc. Table 5 Current position data C Driver door window position data Cd: 8 bits Passenger door window position data Ca: 5 bits Driver rear door window position data Cdb: 8 pins] ~ Passenger seat rear door window position data Cab: 8 bits Table 6 Base point data D Driver door base point data Dd: 8 bits Passenger door base point data Da: 8 pins 1 ~ Driver rear door base point data Ddb: 8 bits] ~ Passenger seat rear door base point data Dab: 8 bits Note: Base point data is the position data (negative number) of the 0th position, that is, the fully open position, relative to the 1st position (numeric value 0) ).

Table 7 Base point determination flag E Driver door base point determination flag Ed: 1 bit Passenger seat door base point determination flag Ea: 1 pitch to driver rear door base point determination flag Edb: 1 bit Passenger seat rear door base point determination flag Eab :1 bit Note: This base point determination flag indicates that base point determination has been completed. The base point determination flag F indicates that base point determination is in progress.

Table 8 Reference data (Fixed data stored in ROM) Data ■. : Driving the window glass from the closed direction to the opening direction
Figures a to 6c show the control operation (main flow) of the microcomputer 9 mainly for reading the switch.
Figures a to 7c show the control operation (subflow) for determining the base point, and Figures 8a and 8b show the window opening/closing control operation (subflow). The control operation of the microcomputer 9 will be explained in detail below with reference to these drawings.

Reference is first made to FIG. 6a. When the microcomputer 9 is powered on (cc), it initializes the input/output ports and internal registers.

Output capo-1- is thereby set to stop all motors.

Next, read the signal level of the input capo-h R15, and if it is low level (if switch 1o is open), wait until it becomes high level H. Therefore, when the switch 10 is open, automatic control of window opening/closing is not performed.

When input port R15 is H or becomes H,
Microcomputer (hereinafter simply referred to as microcomputer) 9
is a short dt timer (dt timer: program timer) that determines the division time for time-division reading of the switch group. , when the set count value (set time limit) is reached, a time-over flag is set and the process returns), and the process proceeds to step 4 and subsequent steps.

In step 4, the output port R6's cell 1 data (I: reading of the switch 11, 18.19 group, L: no reading of the group) is referenced, and if it is II, the input port is
1- Read the signals of R2 and R3, and if either is detected, proceed to step 7 and stop all motors (set L to all output boats 0o-07), and proceed to step 8 with the settings set so far. Clear all status data that no longer matches the current state due to the interwoven stop of the motor.

As will be described later, the process returns to step 4 every time one cycle of Progera t1 is executed, so if the switch 11 is pressed strongly (deeply) in the up or down direction,
No matter what state the control is in, all motors are stopped. Therefore, when the driver 2r senses that something is wrong with the window drive, all he has to do is forcefully press the switch I.

Note that the switches 11 to 14 are mounted on the driver door, and the switches 15 to 17 are mounted on the passenger seat door, the passenger seat rear door, and the driver rear door in that order.

Now, going back to step 4 and continuing the explanation, if (R6=H, R2orR3=L) is not the case, the process goes to step 5, and in step 5, the "key-in reading stop flag" indicating that the key-in reading has already been completed is set. ”
See if there is. This flag indicates that, after key-in reading and decoding of key operations, a corresponding control operation is about to be started or is being started. There are two control operations: reference point setting and window (opening/closing) control.When there is a "key-in reading stop flag" and the reference point setting flag is present, the reference point setting control is activated, and if there is no reference point setting flag, the window is closed. Control is set. Therefore, if there is a "key-in reading stop flag", the process proceeds to step 6, and if there is a reference point setting flag in step 6, the process proceeds to step 51, which is the reference point setting control, and if there is no reference point setting flag, the process proceeds to step 71, which is window control.

Returning to step 5 again to continue the explanation, if there is no "key-in reading stop flag" in step 5, the process proceeds to step 9, where the dt timer status data is referred to, and if the time has not exceeded, the process proceeds to step 13. If the time has expired, the R7 set flag (■) is sent to output port R7.
Check whether the R7 set flag is set (flag indicating reading of switches 12 to 17 groups). If it is not cleared, the reading period for the switch 11, 18, and 19 group has ended, so the R7 set flag is set to 1~, and the process goes to step 13. In this step, the R7 set flag is cleared. If there is, the switch 12-17 group is to be read, so the process proceeds to key-in reading of the switch 12-17 group in FIG. 6b. If there is no R7 set flag in step 13, it is key-in reading of switch 11, 18.
Proceed to key-in reading of group 17.

For key-in reading of switch 1.1, 18.19 group, set 1-1 to output port R6, L & set 1 to R7, turn 1-transistor 21 on, turn 22-off, input capo-h RO -Read the signal level (11 or L) of R5. In this reading, as already explained, in step 4 the switch 11's switch 1-tub instruction (R2, R3) is read, so reading is not performed here.

That is, in step 15, the signal levels of input capo-1 to RO and I-1 are referenced, and if one of them is active, the process proceeds to step 16 and subsequent key-in reading, and if the other is active, step 29 is performed. Referring to the signal levels of input capo-1-R4 and R,5, if one of them is LC, step 64
In this case, the key-in reading stop flag is set, and in this case, since the key is operated outside the vehicle, key-in reading is stopped and window control is immediately started. RO in steps 15 and 29
, R1゜R4 and R5, and if they are all H, a key-in flag (first key-in: switch 11 is turned off only when an up or down command is given) is set in step 24. If there is no key flag, the process returns from step 24 to step 4, so in steps 15 and below, the swive command of the switch 11 is not read.

As described above, when the switches 18 and 19 are closed by -.degree., the window control is immediately performed, and the switch operation mode described later is not deciphered, and step 170 is performed.
Determine which of 18 and 19 is set to the open position, and if 18 is set to open, the fully open position (third position) data is stored in the target value register in step 172, and if 19 is closed, the data is set to step 1.
Since the fully open position (0th position) data is set in the target value register at step 71, when the switch 18 is once closed (R4=L), the motor Mdb is energized until the driver rear door is fully opened, and the switch 19 is closed once (R5=
When set to L), motor Mdb is energized until the driver rear door is fully opened. This control flow is window control in step 7'l, details of which are shown in Figures 8a and 8.
As shown in Figure b.

Now, going back to step 15 and continuing the explanation, if ROorR1=L (switch 11 is up or down) in step 15, it is checked in step 16 whether or not there is a key flag. Set the lsec timer (dt
Set the 5 sec timer (same as the timer) and 5 sec timer (same as the dt timer) to 7-1, and count up 1 for the 2-color 2-pitch 1-D3-1-132 of data B (see Table 3). Step 17 ~20) In step 21 of FIG. 6c, data A is created by incorporating the signal states of the input ports R7~RO at that time. Then, in step 22, reference is made to the reference point setting flag Ed (see Table 7), and if it is present, it means that the reference point of the driver 1-a window has already been determined since the power supply Vcc was turned on, so step 70 The window control flag is set in step 71, and the process proceeds to window control in step 71, and upon exiting from that step, the process returns to step 4.

If the base point setting flag Ed is L in step 22 (base point has not been determined yet after turning on the power supply VCC), the base point determination flag Ed is set (1-1 is stored in memory), and base point determination is started in step 50. The base point setting flag F indicating that the base point has been entered is set, and the process proceeds to step 51 for determining the base point, and then returns to step 4.

Returning to step 4, proceed to step 16 in the same way as above, but this time there is a key flag, so step 16
-30-28-6, step 6, step 5
1 or 71, exit there and proceed to step 4, step 4-5-9--13-14-15-16-3,
0-(3-51 or 71-4 loop is circulated. When the switch 11 is closed once during the loop, the process proceeds to steps 29-24-26 in step 15, and the key-off flag is set to zero in step 27. This time, step 28-6-5
1 or 71-4-5-9-・-13-14-15-29
-24-26-28 loop is 4F (circle. When switch 1 is closed again, this time step 15
-16-30-31 and step 31 for 1 sec
Referring to the timer status data, if the time has not exceeded, in step 32, the lower two pips of the data IB (see Table 3) are sent! -110+l)1 is incremented by 1, and in step 33, the ls and ec timers are set (reset) again, and the process proceeds to step 6-51 or 71-4-. When the time has elapsed, in step 34, the upper 2 bits of data B (see Table 3) are incremented by 1 count, and in step 35, the key-in flag, key-off flag, and timer are cleared, and key-in reading is performed. is finished, data B is referred to the condition table (fixed data in ROM), and if data B is found in the condition table (step 36), the key-in reading stop flag is set in step 37, and data A and data Target position data is determined based on B and stored in the target register. If data B is not in the condition table, the process advances to step 173, where data B and the window control flag are cleared, and step 6
If there is a base point determination flag, the process goes to step 51; if there is no base point determination flag, the process goes to step 174 and then to step 7.

With the above key-in reading, key-in reading is completed and key-in reading is stopped only when data B is data Ba, Bb, or BC shown in Table 3, that is, only when the key-in operation is in the mode shown in Table 4. The flag is set to 1~. When the key-in operation mode is other than these, the key-in is ignored, and when the window opening/closing control is in progress, the motor is stopped through a loop of steps 173-6-174-7. Since the base point determination flag is not cleared, base point determination continues.

The above-described reading of the up-closed and down-closed states of the switch 11 and the parallel reference point setting control or window opening/closing control are performed in the same manner in response to the up and down states of the switches 12 to 17.

Note that the target position data is stored as follows.

(1) Data B=Ba (See Table 3) When data A is an up instruction (RO, R2 or R/I = L), a down instruction (R1, R
3 or R5=L), set the target position data to the 0th position data.

(2) Data B=Bb (See Table 3) Two target positions when data A is an up instruction (Ro, 112 or R/I=L) and a down instruction (R1, R3 or R5=L) Data = data indicating 1/2 of the absolute value of the O-th position data.

(3) Data B=Bc (see Table 3) When data A is an up instruction (110, R2 or R4=L), the target position data is equal to 1 of the absolute value of the 0th position data.
When the down instruction (R1, [3 or R5=L) is given to data indicating a value of /3, the target position data = 0th position is set to data indicating a value of 2/3 of the absolute value of the data.

Next, the "base point determination" control shown in FIGS. 7a to 7d will be explained. Once the reference point is determined, steps 72 and 74 are performed.
C. Proceed to steps 75-82, input port 1-set. In this person Kaboto set.

Referring to data A, if its R6 is I4 (first
In the case of a table, No. 1 to 6 are included, but in the case of No. 3 to 6
In this case, the reference point cannot be determined, so in case No. 1 and 2), set the current position register (register that memorizes the window opening/closing position: see Table 5)) to the Cd register applied to the motor Md, and set the reference point in the memory. The register to be stored is set as the Dd register (see Table 6) (step 76), and the register set flag is set (step 82). When R6=L, this means that R7=1-1 in this case, and one of the switches 15 to 17 has been operated, so through step 77 or 79, RO Or, if R1=L (edge 15 closed), set the current position register to Ca register and set the base point register to D.
Let it be the a register.

When R2 or R3 is set (switch 1G is closed), the current position register is set as the Cab register and the base point register is set as the D a b register. When R4 or R5 is set (switch 17 is closed), the current position register is set as the Cdb register and the base point register is set as the Ddb register. In either case, set the register set flag and proceed to the next step.

First of all, in order to find the first position which will be the base point, enter Kapo-1-
1113 is checked, and if this is T- (position detector SE detects reflected light), that is, the current position is above the first position, the motor drive is set to reverse, the forward rotation flag is cleared, and step Proceed to step 105.

If the input boat R13 is 11, that is, the current position is lower than the first position, the motor drive is set to normal rotation, the normal rotation flag is set, and the process proceeds to the next step 91.

Proceeding to step 91, the input level (1-T or L) of the rotation signal input capo-1"Ki is memorized in the polarity register,
Step 92 sets the protection timer and mask timer. These timers are also similar to the dt timer.
This is a program timer that counts up with an interrupt.

Note that the protection timer is set for a time slightly longer than the time it takes for the mechanism to move normally after motor energization starts, and by the time this timer times out, If the signal level of Kt does not change (the mechanical part does not move), it is determined that there is an abnormality and the motor is stopped. The mask timer sets the time from the start of energizing the motor until the motor current drops to a steady level, and after this timer times out, overload detection, which will be described later, is started.

Now, if the signal level of [< i does not change before the protection timer times out, the motor is stopped through steps 93-94, and in step 9G, the reference point setting flag of the window (motor) where the reference point was to be determined is set. , other status data are also cleared, and the process returns to step 4 of the main routine.

Baud 1-K i until the protection timer times out
When the signal level changes, the process advances to step 97 to update the position data, and if there is a forward rotation flag, the contents of the current position register are incremented by 1, and if there is no forward rotation flag, the contents of the current position register are incremented by 1 decimeter. - to do.

Then, a drive initial flag indicating that motor drive has started is set to 1-.

At this point, the process returns to the main routine, performs key-in reading kl, goes through step 6, and returns to base point determination. This time, since there is a register set flag, the process proceeds from step 74 to step 98 (Fig. 7C), and the rotation signal input port Ki is set.
If the signal level has not changed, the process returns to the main routine, performs one cycle of key-in reading, and returns to base point determination via step 6. If the Ki signal level is changing, the position data is updated in step 99, and step 10
At 0 and 101, it is checked whether the motor start period has elapsed, and if the start period has elapsed (mask timer time over) and there is a drive initial flag, it is cleared.
Proceeding to step 103, A/D conversion of the motor load is performed. If the startup period has not elapsed, the process returns to the main routine, performs one cycle of key-in reading, goes through step 6, and returns to base point determination.

When the A/D conversion is completed in step 103, the normal rotation plug, that is, the motor rotation direction is referred to in step 104. If it is a reversal or window drop, check Baud 1-R13 and wait for it to change to H, ie, to detect the first position. When the first position is detected, the current position register C is cleared (that is, the first position is stored in memory). After this, while A/D converting the motor current I, compare it with IO.
Wait until ≧10, that is, until the window glass has descended to the lower limit position.

When the lower limit position is reached, the motor drive is stopped and the contents of the current position register C are stored in the base point register (ie, the 0th position register). Then, the base point determination flag is cleared, the window control flag is set, and the process returns to step 4.

In step 104, there is a normal rotation, that is, a window rise.

- Drive the window glass until it is fully open. During this time, below the first position (R13?()), a relatively small current 1o is used as a comparison level for the negative Vlf current I to prevent danger, and when I≧Io, the motor is stopped.

Above the first position, the comparison current level is updated to 12 because there is no risk of a person's hand getting caught.

When the window glass reaches the second limit position (■≧L2)
After stopping the motor, the motor drive is set to reverse rotation, the forward rotation flag is cleared, and the process returns to step 93. After this, the process proceeds from step 104 to step 105 in the same manner as described above, where the current position register is cleared at the first position and the base point register is set at the 0th position.

When lifting the wheel and determining the reference point, the driving direction is changed depending on whether the window glass is above the first position at that time.
If it is above, lower the window glass and find the 1st position on the way, then lower the window glass to the lower limit position and find the 0th position.
Find the location. Also, if the position of the window glass is lower than the first position when entering the reference point, the window glass is raised to the third position, and then lowered to the first position and the zero position. Find the location.

Next, window control will be explained with reference to FIGS. 8a and 8b. When entering "window control", steps 133-134-
135-1.36-137-138~139-140~
At step 144, the motor drive is set, the drive initial flag is set, the input/output capo-1 is set, and if the mechanism does not move, the motor is stopped.

Then, the process returns to the main routine, goes through key-in reading, goes through step 6, and returns to window control. When the mechanism moves and returns to window control from the main routine, steps 133-134-145-146-147-148-
Steps 149-150 are followed to set the motor drive flag, clear the initial drive flag, return to the main routine, perform key-in reading once, and return to window control via step 6. Now step 133-151-153
-], 54-155, the current position data (contents of the current position register) is updated every time the input of the input capo-1''Ki changes, and the motor current is converted into A/I).

Then, in step 156, the content of the current position register is checked to determine whether the window glass position at that time is above or below the first position, and if it is below, the comparison level of the load current ■ is set to 11,
” If it is two, compare] Set the novel to I2. In either case, if the load current exceeds these comparison levels, it is an overload or limit position (0th position or 3rd position), so the process proceeds to step 7 and the motor is stopped.

When the motor load current is within a predetermined range, the contents of the current position register are compared with the contents of the target register according to the rotational direction of the motor, and if the two match, the key-in reading stop flag is detected via step 1.75. (If the key-in reading has already been completed and the target position data has been set to zero), the process proceeds to step 7 to stop the motor, but if the current position has not reached the target position or there is no key-in reading stop flag ( Since the key-in reading has not yet been completed, the target position data has not been set), the process returns to the main routine, performs one cycle of key-in reading, and returns to window control via step 6.

In the above embodiments, a fo1-sensor was used as a position detector, but other detectors may be used. For example, as shown in FIG. 9, a microswitch MS is provided near the weatherstrip 8, and the detection part of the MS is extended into the hollow part of the weatherstrip to mechanically detect the deformation of the weatherstrip. do it.

Further, the position detector 11 may be provided on the drive mechanism side.

An example thereof is shown in FIGS. 10a and 10b.

This will be explained with reference to FIGS. 10a and 10b.

In this embodiment, one end of the inner side of the tooth of the sector gear 4 is slightly protruded to form a cam surface 4a, and a microswitch MS is arranged at a predetermined position (on the bracket 10) opposite to the movement locus of this cam surface 4a. . In this example, at the position where the window glass 2 starts to hit the weather 1-lip 8, the force 11 surface 4a hits the detection part of the switch MS, and the force 11 surface 4a hits the detection part of the switch MS.
The S contact is set to switch. Since this detection method is not a position detection method for detecting the deformation of the weather strip 1 to the lip, the position to be detected is not subject to any restrictions, and this position can be set before the weather strip 8 is deformed. In that case, if you change the reference level before the motor load starts to change, you can set the normal reference level (I1) to a level closer to the actual load level and achieve high sensitivity without special complicated processing. Can detect overload (i.e. prevent danger).

In addition, in the example, the side window was explained, but
The present invention can be similarly applied to roof panels and the like.

In addition, in the embodiment, motor overload detection is performed by looking at the motor load current, but if a motion amount detector such as a rotary encoder is provided, the frequency or period of the signal emitted by it may be compared with a reference value. Motor overload detection can be performed similarly to the embodiment.

As described below, according to the present invention, a position detector is provided and the overload reference level is changed according to the output of the position detector. Overload detection (ie, hazard prevention) can be performed.

[Brief explanation of the drawing]

1st. Figure a is a side view of a mechanical part of an embodiment of the present invention, and does not show an electric window opening/closing mechanism for a passenger seat of an automobile. Figure 1b is an enlarged perspective view of a part of the electric window opening/closing mechanism, Figure 1c
The figure is a plan view. FIGS. 2a, 2b, 2c, and 2d are partial sectional views showing the relationship between the window glass 2 and the weather strip 8, and FIG. 2e is an enlarged sectional view showing the position detector SE in FIG. 2a. It is. Figure 3a is a graph showing the energizing current of the electric motor that drives the window glass 2 when the window glass 2 is raised, and Figure 3b is (
It is a graph showing the relationship between q-minute current and motor load. Fig. 4a is a block diagram showing the configuration of an electrical control system that reads switch input and controls the energization of the electric window opening/closing mechanism; Fig. 4b is an electrical circuit diagram showing a constant voltage power supply circuit that supplies voltage Vcc to the electrical control system; FIG. 40 is a perspective view showing the appearance of one of the window opening/closing instruction switches 11 to 17 shown in FIG. 4a, and FIGS. 5a, 5b, 5C, and 5d show the steady state and operating state of the switch. FIG. Figures 6a, 6b and 6c are respectively shown in Figure 4a.
Flowcharts 1 to 7 show the key-in reading operation of the microcomputer 9 shown in the figure. Figures 7a, 7b and 7c are respectively
FIG. 1 is a flowchart showing the reference point determination control operation of the microcomputer 9 shown in FIG. FIGS. 8a and 8b are a flowchart 1- showing the window opening/closing control operation of the microcomputer 9 shown in FIG. 4a. FIG. 9 is a partial sectional view of a window showing another embodiment of the present invention. 10a and 10b are side views of an electric window opening/closing mechanism showing another embodiment of the present invention, and FIGS.
・It is an enlarged side view. 1: Passenger door 2: Window glass 3: Linfer ZN 4: G type A/J cars 5: Worm wheel assembly 6a to 6d: Hall I (:, Unit 1-7a to 7d:
Ring-shaped permanent magnet 8: Weathers 1 to Lip 9: Microcomputer (electronic control unit) lO: Automatic window control setting switch 11 to 17: Window positioning instruction switch 18.19 Door key operation response switch Mb, Ma
+ Mab, Mdb: Window glass drive motor r: Motor current detection resistor 23: Constant voltage power supply circuit SE: Position detector (position detection means) MS2 micro switch (position detection means) Patent applicant
Aisin Seiki Co., Ltd.F+3b"Im η3av Foil 4bA!Jikuro 5av ¥5b Reaction force 5Cm 109- Kozue 4c ■ Eraser 5dv Foil 10a Figure 10bV

Claims (7)

[Claims] (1) Support means for movably supporting onboard equipment; electric drive mechanism for driving onboard equipment; electric driver for energizing the electric motor of the electric drive mechanism; means for detecting the load of the electric motor; electric drive mechanism at least one position detection means for detecting the position of the movable part of the on-vehicle equipment or the electric drive mechanism, which is provided at at least one position among the on-board equipment, the electric drive mechanism, and their vicinity; ; and the electric motor in response to operation of the switch means.
The output of the position detection means is monitored during the energization, position information is obtained from the position detection means and the rotational direction of the electric motor, and the position stored in the semiconductor memory is determined. A vehicle equipped with an electronic control device that reads reference data associated with the reference data, compares the load on the electric motor with this, and stops energizing the electric motor when the load exceeds a predetermined value determined by the reference data. drive control device. (2) The electric drive mechanism includes a movement signal generator that generates an electric signal that causes a level fluctuation of 1 cycle per movement of a predetermined person in conjunction with the movement of the electric drive mechanism, and the electronic control device responds to the operation of the switch means. During the energization, the output level change of the movement signal generator and the output signal of the position detection means are monitored, and the information from the position detection means and the rotation direction and level change of the electric motor are monitored. The position information is obtained from the number of times, the reference data stored in the semiconductor memory and associated with the position is read, and the load of the electric motor is compared with this, and if the load exceeds a predetermined value determined by the reference data. A drive control device for on-vehicle electric equipment according to claim 1, which stops energization of an electric motor. (3) The position detection means is arranged at a position where a predetermined output state change occurs when the movable part of the on-vehicle equipment is in the vicinity of the position where it contacts the flexible member. A drive control device for on-vehicle electric equipment as described in item (1) or item (2). (4) The position detection means detects deformation of the weather strip installed on the vehicle. A drive control device for on-vehicle electric equipment according to claim (3). (5) The electronic control device instructs energization of the electric motor in response to the operation of the switch means, monitors level changes of the electric signal and information from the position detection means during energization, and obtains movement limit position information. 9 Obtain position information from the position detection means and the rotational direction of the electric motor and the number of level changes, read reference data stored in the semiconductor memory and associated with the position, and adjust the load on the electric motor. In comparison, when the load exceeds a predetermined value determined by the reference data, the electric motor stops energizing, and when the position information matches the limit position, the electric motor stops energizing.
2) A drive control device for on-vehicle electric equipment as described in item 2). (6) The electronic control device does not perform the comparison for a predetermined time from the start of energization of the electric motor, and performs the comparison after a predetermined time. A drive control device for on-vehicle electric equipment as described in 2. (7) The on-vehicle electric motor according to claim (1) or (2), wherein the means for detecting the load of the electric motor is a resistor inserted in the energizing current loop of the electric motor. Equipment drive control device.