JPH0311069Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is a power seat for an automobile in which preset positions of each part of the seat can be memorized and the memorized positions of each part of the seat can be reproduced by operating a switch. The present invention relates to a control device.

(Prior art) In recent years, the position and height of the seat of the driver's seat of an automobile, the angle of the backrest, and other parts of the seat can be adjusted to optimal positions stored in advance for multiple drivers by performing predetermined operations. A power seat that automatically sets when driving has been developed and is now installed in automobiles.

Conventionally, in this type of power seat, the seat position is memorized and the seat position is regenerated by operating a memory switch that instructs to memorize the position of each part of the seat and a replay switch that instructs to regenerate the memorized seat position. It's becoming like that.

By the way, in this type of power seat,
If the driver accidentally operates the memory switch or playback switch, or if a child or the like carelessly operates the memory switch or playback switch, the memory of seat positions that have been stored for multiple drivers will be erased. There was a problem that if such a situation occurred while the car was in motion, it could lead to an accident.

(Purpose of the invention) The present invention was made in order to solve the above-mentioned problems in the power seat for an automobile, and its purpose is to provide a control device for a power seat for an automobile without the possibility of erroneous operation of the memory switch or the playback switch. The purpose is

(Structure of the invention) For this reason, the present invention provides a seat supported on the floor of the driver's seat of a car, the adjustment elements of which are movable and adjustable according to the seated driver, and a seat in which each adjustment element of the seat is moved individually. a motor drive device that drives a motor; a movement sensor that outputs a signal corresponding to the amount of movement of each adjustment element of the seat; a storage command signal that instructs storage of a target position of the adjustment element of the seat; an input device that outputs a reproduction command signal for instructing reproduction of the adjustment element of the seat to a target position; and an input device that receives a storage command signal from the input device and stores the target position of the adjustment element of the seat; Receiving the signal, the current position of each adjustment element of the seat is calculated from the movement signal of each adjustment element of the seat inputted from the movement sensor, and the adjustment element of the seat corresponding to the current position and the driver is inputted from the storage device. and a control device for outputting a command signal to the drive device so that the two match with the target position of the seat adjustment element. The present invention is characterized in that it includes an erroneous operation prevention switch that outputs a prohibition signal for prohibiting storage and reproduction to the control device.

(Effect of the invention) According to the invention, the erroneous operation prevention switch allows
Since the functions of the memory switch and playback switch are stopped except when storing and reproducing the seat position, even if the memory switch or playback switch is operated carelessly, the memory of the seat position will not be erased. It is possible to completely prevent bumps and bumps caused by sudden changes in the position of the seat, improving the reliability of the power seat for automobiles.

(Embodiments) Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

A block diagram of a control circuit for an automobile power seat according to the present invention is shown in FIG. 1a.

The control circuit of the above automobile power seat has a second
As shown in Figures a and 2b, the seat part 52 of the power seat 50 has a longitudinal position indicated by arrow _A1 , and the backrest part 54 has a swing angle in the longitudinal direction indicated by arrow _A2 . The heights of the front part 52a and rear part 52b of the seat part 52 in the vertical direction indicated by arrows _A3 and _A4, respectively, are set at pre-stored positions.

Referring again to FIG. 1a, the microcomputer 30 has a function as a control unit for the power seat 50, and has a CPU (central processing unit) and
It consists of ROM, RAM, etc. This microcomputer 30 has an input device 32.

The input device 32 has a manual setting switch (not shown) for manually setting the positions of the seat portion 52 and backrest portion 54 of the power seat 50. The input device 32 also includes:
As shown in FIG. 1c, there are a total of 4 switches including the memory switch 36 that instructs to store the manually set positions of each part of the power seat 50, the stop switch 38 that stops the operation of the power seat 50, and the owner of the vehicle. Select switches 40, 42, 44 that command the storage and reproduction of the positions of the above-mentioned parts of the power seat 50 for a human driver.
and 46. These memory switch 36, stop switch 38, and select switches 40, 42, 44 and 46 are housed in a switch box 31 and connected to the microcomputer 30 by a wire 60.

The above switch box 31 is a power seat 50
The vehicle is located near the bottom 52 of the vehicle and is operated by the driver.

The memory switch 36 of the input device 32 is provided with an erroneous operation prevention switch 70, as shown in FIG. 72 are provided. When the erroneous operation prevention switch 70 for the memory switch 36 is on and the select switch 40,
When the erroneous operation prevention switches 70 for 42, 44 and 46 are on, the microcomputer 30 prohibits input of signals from the memory switch 36 and select switches 40, 42, 44 and 46.

On the other hand, the microcomputer 30 outputs slide signals for forward and backward sliding of the seat portion 52 of the power seat 50 to _the relay drive circuits DR ₁₁ and DR ₁₂ , respectively, and
The DR ₂₂ has a backrest 54 of the power seat 50.
outputs forward and backward knuckle signals respectively. The microcomputer 30 also outputs lift signals upward and downward to the front portion 52a of the seat portion 52 of the power seat 50 to the relay drive circuits DR ₃₁ and DR ₃₂ , respectively.
Lift signals for upward and downward directions of the rear portion 52b of the seat portion 52 of the power seat 50 are output to DR ₄₁ and DR ₄₂ , respectively.

The relay drive circuits DR ₁₁ and DR ₁₂ energize relays X ₁₁ and X ₁₂ , respectively. When the relay _X11 is energized, the motor _M1 rotates and the seat portion 52 of the power seat 50 slides forward. vice versa,
When the relay _X12 is energized, the motor _M1 rotates in the opposite direction to the above, and the seat portion 52 of the power seat 50 slides rearward.

Similarly, relay drive circuits DR ₂₁ and DR ₂₂ energize relays X ₂₁ and X ₂₂ , respectively. When the relay X ₂₁ is energized, the motor M ₂ rotates and the backrest portion 54 of the power seat 50 swings forward. Conversely, when relay X ₂₂ is energized, motor M ₂ rotates in the opposite direction to the above, and backrest portion 54 of power seat 50 swings rearward.

Relay drive circuits DR ₃₁ and DR ₃₂ each have a relay
Energize X ₃₁ and X ₃₂ and also relay drive circuit
DR ₄₁ and DR ₄₂ energize relays X ₄₁ and X ₄₂ , respectively. When _{the relay}
When a rises and relay X ₃₂ is energized, the motor
M ₃ rotates in the opposite direction to the above, and the front part 52 of the seat part 52
a descends. Furthermore, when the relay X ₄₁ is energized, the motor M ₄ rotates and the rear part 52b of the seat portion 52 of the power seat 50 is raised, and when the relay X ₄₂ is energized, the motor M ₄ By rotating in the opposite direction, the rear portion 52b of the seat portion 52 is lowered.

The rotational speed of the motors M ₁ , M ₂ , M ₃ and M ₄ can be determined by providing reed switches RS ₁ , RS ₂ , RS ₃ and RS ₄ on their rotating shafts, and reed switches RS ₁ , RS ₂ as described later. , RS ₃ and RS ₄ are output to the microcomputer 30 and detected by counting the number of pulses.

The microcomputer 30 is a reed switch.
The positions of the above-mentioned parts of the power seat 50 are calculated from the count values of pulses input from RS ₁ , RS ₂ , RS ₃ and RS ₄ .

In addition, in FIG. 1a, the power supplies PS ₁ , PS ₂ ,
PS ₃ and PS ₄ are equipped with reed switches RS ₁ , RS ₂ ,
Apply voltage to RS ₃ and RS ₄ respectively, and motor M ₁ ,
Rotation of M ₂ , M ₃ and M ₄ turns reed switches RS ₁ , RS ₂ , RS ₃ and RS ₄ on and off,
These reed switches RS ₁ , RS ₂ , RS ₃ and
This is to allow the above pulse to be output from _RS4 .

The above relay drive circuit DR ₁₁ , DR ₁₂ , DR ₂₁ ,
DR ₂₂ , DR ₃₁ , DR ₃₂ , DR ₄₁ and DR ₄₂ and relays X ₁₁ , X ₁₂ , X ₂₁ , X ₂₂ , X ₃₁ , X ₃₂ , X ₄₁ and
X ₄₂ is the printed circuit board 3 as shown in Figure 1b.
4 and is connected to the microcomputer 30 by wires 62. Further, this printed circuit board 34 is connected to a motor by a wire 64.
Connected by M ₁ , M ₂ , M ₃ and M ₄ .

Next, the mechanical parts of the power seat 50 driven by the motors M ₁ , M ₂ , M ₃ and M ₄ will be explained with reference to FIG. 3.

In FIG. 3, support metal fittings 8L and 8R that support the entire power seat 50 on the floor of the driver's seat of an automobile (not shown) have guide metal fittings 10, respectively.
L and 10R are fixed substantially parallel to the front-rear direction of the vehicle so that the front side of the vehicle, indicated by arrow _A10 , is slightly higher. These guide fittings 10
Slide fittings 12L and 12R having a substantially U-shaped cross section are slidably fitted onto L and 10R.

T-shaped T-shaped fittings 13L and 13R are welded to the slide fittings 12L and 12R, respectively.
A gear mechanism 15L for sliding the slide fittings 12L and 12R back and forth by M ₁ is threaded onto a screw shaft 18L fixed to the support fitting 8L so as to be parallel to the guide fitting 10L, and is connected to the motor M _{1 .} The rotating shaft 6 is connected to the rotary shaft 6 of the
When the rotary shaft 6 is driven by the motor _M1 in the direction of the arrow _A11 , the gear mechanism 15L rotates the screw shaft 1.
8L, move forward as indicated by arrow A ₁₀ , and turn the motor
When the rotating shaft 6 of M ₁ is driven in the direction of arrow A ₁₁ ,
The gear mechanism 15L moves the screw shaft 18L backward in the opposite direction to the above.

Another gear mechanism 15R is also screwed into a threaded shaft 18R fixed to the support metal fitting 8R in the same manner as described above, and is coupled to the rotating shaft 6 of the motor _M1 . When the rotating shaft 6 is driven by the motor _M1 in the directions of arrows _A11 and _A12 , the gear mechanism 15R moves back and forth on the screw shaft 18R.

The gear mechanisms 15L and 15R are connected to the slide fittings 12L and 12R by T-shaped fittings 13L and 13R, respectively, so when the gear mechanisms 15L and 15R move forward and backward, the slide fittings 12L and 12R also move back and forth. do.

At the front part of the slide fitting 12L, there is a pivot fitting 19L that swingably supports the front lifter fitting 21L.
and a swing adjustment mechanism 14 for changing the swing angle of the front lifter fitting 21L using a motor _M3 .
L is attached. This swing adjustment mechanism 14L
is connected to the rotating shaft 2 of the motor _M3 , and when the rotating shaft 2 is rotated in the direction of arrow _A31 by the motor _M3 , the screw shaft 14La of the swing adjustment mechanism 14L is connected to the rotating shaft 2 of the motor M3.
moves backward and swings the front lifter fitting 21L backward. Further, when the rotating shaft 2 of the motor _M3 rotates in the direction of the arrow _A32 , the front lifter fitting 21L swings forward.

The front part of the other slide fitting 21R is also provided with a bearing fitting 19R that swingably supports the front lifter fitting 21R and a swing adjustment mechanism 1 in exactly the same manner as described above.
4R is attached. The front lifter fitting 21R is also swung back and forth by the motor _M3 in the same manner as described above.

On the other hand, a pivot fitting 22L that pivotally supports the rear lifter fitting 23L is fixed to the rear portion of the slide fitting 12L. The above rear lifter fitting 23
L is coupled by a screw shaft 16La to a swing adjustment mechanism 16L driven by a motor _M4 .

When the rotation shaft 4 of the motor M ₄ rotates in the direction of arrow A ₄₁ , the swing adjustment mechanism 16L rotates the screw shaft 16.
La moves forward and swings the rear lifter fitting 23L forward. Also, the rotation axis 4 of motor M ₄ is indicated by arrow A ₄₂
When rotated in the direction, the rear lifter fitting 23L is swung rearward.

Similarly to the above, a pivot fitting 22R that pivotally supports the rear lifter fitting 23R is fixed to the rear portion of the other slide fitting 21L. Thereafter, the lifter fitting 23R is also driven by a swing adjustment mechanism 16R and a threaded shaft 16Ra having the same configuration as above.

The front lifter fitting 21L and the rear lifter fitting 23L described above include the seat portion 5 of the power seat 50.
The second side plate 25L is pivotally supported at its front end and rear end, respectively. In addition, the front lifter fitting 21R
And also for the rear lifter fitting 23R, in the same way as above.
Side plates 25R of the seat portion 52 of the power seat 50 are pivotally supported at their front and rear ends, respectively.

In addition, the front lifter fitting 21L and the rear lifter fitting 23
Since the swinging angles of L are adjusted independently, the front lifter fitting 21L and the rear lifter fitting 23L are made to be able to swing independently.
For example, a long hole (not shown) is provided at the front end of the side plate 25L, and the front lifter fitting 21L is inserted into the long hole.
supports the front part of the side plate 25L. The other side plate 25R is also supported by the front lifter fitting 21R through the elongated hole in the same manner as described above.

A motor _M2 is attached to the side plate 25R, and via a gear mechanism 27, swings back and forth a backrest portion 54 (see FIG. 2a) that is swingably supported by the shaft 24.

The operation of the control device for an automobile power seat whose configuration has been explained above will be explained based on the flowcharts shown in FIGS. 4 to 12.

The operations of the control device for the above automobile power seat are classified into a main routine, b manual routine, c storage routine, d regeneration routine, e check routine during regeneration, f correction routine, g error correction routine, and h lock detection routine. be done.

In the a main routine, various switches, sensors, etc. are checked, and in the above b manual routine, c
A decision is made to proceed to the storage routine and the d-playback routine.

b The manual routine starts with the seat 5 of the power seat 50.
This manual routine manually adjusts the forward and backward sliding position of 2, the forward and backward knuckling amount of the backrest portion 54, and the front and rear lift amounts of the front portions 52a and 52b of the seat portion 52. - Move in the desired direction using the manual switch (multiple units can be activated at the same time).

- At the operating limit, motors M ₁ to _{M 4} stop when they sense that there is no change in the number of input pulses.

・When the ignition is OFF, power seat 5
Only the seat portion 52 of 0 moves.

The c storage routine is a routine for storing the positions of each part of the power seat 50 set in the manual routine a above in the memory of the microcomputer 30. In this storage routine, The position of the seat is set as a virtual reference point, and when moving from now on, the rotation speed of the rotating shaft of motors M ₁ to _{M 4} is detected as a pulse with reed switches RS ₁ to _{RS 4} ,
The number of pulses is processed by the computer 30, and the current position and memory position of the seat are stored in the number of pulses. (Memory capacity must be at least twice the maximum number of pulses.) To memorize a position, first press the memory key, and while the buzzer is sounding, press any select switch 40, 42, 44 or 46 (owner switch and 3 other people can be memorized). The completion buzzer sounds twice.

・Memorization and playback are not possible while driving.

- Cannot be memorized when the ignition is OFF.

- The owner of select switch 40, 42, 44 or 46 cannot memorize unless the owner lock is OFF.

The d regeneration routine is a routine for reproducing the positions of each part of the power seat 50 stored in the c storage routine described above.
Press 4 and 46 until the buzzer stops sounding.

- For movement to the memorized position, two relays, such as X ₁₁ and X ₁₂ , are installed for forward and reverse rotation for each motor M ₁ to _{M 4} , so all motors M ₁ to _{M 4} are rotated in the same direction. operate at the same time regardless of the

- When playback ends (returns to the memorized position), the completion buzzer sounds twice.

- Can be played only once even if the ignition is turned off.

- When reproducing, calculate the difference between the current position and the stored position, and operate motors M ₁ to _{M 4} to obtain a pulse equal to the difference.

- If you operate any other switch during playback, playback will stop.

The check routine at the time of e regeneration is the same as the check routine for each motor M ₁ , M ₂ , M ₃ and
This is a routine for checking the number of rotations that _M4 should be rotated and the actual number of rotations.

The f correction routine is a routine that corrects overrun when each motor M _{1 ,} M ₂ , M ₃ , _{and M 4 is} stopped. Since an error occurs between the current position and the actual position, a limiting value is added to the current position at the end of the operation to correct this error.

The g error correction routine is performed for each motor M ₁ , M ₂ ,
This routine corrects the positions where _M3 and _M4 stopped by adding and subtracting offset values.

In the h-lock detection routine, each part of the power seat 50 reaches the end of the adjustment position, and each motor
It is detected that M ₁ , M ₂ , M ₃ and M ₄ are locked, and relays X ₁₁ , X ₁₂ , X ₂₁ , X ₂₂ , X ₃₁ , X ₃₂ ,
This is the routine to deactivate X ₄₁ and X ₄₂ .

Next, the operation of the control device for an automobile power seat in each of the routines a to h above will be explained in order.

a Main Routine When the system is powered on, the microcomputer 30 runs from step 100 to step 1.
After executing step 001 and performing initial settings, in step 1002, stack pointer settings and motor
Clears the lock counter that detects the lock of M ₁ , M ₂ , M ₃ and M ₄ , executes the monitor program, turns off the car's ignition switch (hereinafter referred to as RST6.5), and turns on the stop switch 38 (hereinafter referred to as RST5.5) enables interrupts.

Next, the microcomputer 30 executes step 1003 to determine the RST6.5 interrupt. RST6.5 interrupt is taking place, i.e.
When the ignition switch is off, steps 1012, 1013 and 1014 are executed in sequence and select switches 40, 42, 44 and 4 are turned off.
6 (see FIG. 1c) is determined to be on or off. These select switches 40, 42, 44 and 4
6 is on, the microcomputer 30 executes step 1017 and determines whether or not the playback flag is cleared. If the regeneration flag is cleared, the power sheet 50 is regenerated only once in step 1018, and then the process returns to step 1002.
If the reproduction flag is not cleared, the process returns to step 1002 without performing the above reproduction.

On the other hand, the microcomputer 30 selects the select switches 40, 42, 4 at step 1014.
4 and 46 are both off, step 1015 is executed. When the switch (not shown) for sliding the power seat 50 in the longitudinal direction is on, the microcomputer 30 executes step 1016, and after manually sliding the power seat 50 in the longitudinal direction, Return to step 1002. If the switch for sliding is off, microcomputer 30 returns to step 1002.

Next, when the ignition switch of the car is turned on in the above state, the microcomputer 30
After executing step 1004, step 100
5 determines whether the manual switch is on or off and the vehicle speed.
Determining whether the distance is 10km or more, select switch 40,
42, 44, and 46 are on or off, and storage switch 36 is on or off. Microcomputer 30 executes manual routine 1011 when the manual switch is on, and executes playback routine 101 when select switch 40, 42, 44 or 46 is on.
0 and if the memory switch 36 is on,
Subroutine 1009 is executed.

b Manual Routine When the ignition switch is on, the microcomputer 30 executes steps 3001 and 3002 to set relay output data. In this case, all data for the slide, knuckle, front lifter, and rear lifter of the power seat 50 can be set.

On the other hand, when the ignition switch is off, steps 3003 to 3004 are executed and only data for sliding the power seat 50 can be set.

Thereafter, the microcomputer 30 enters _the state of the manual switch into _{the data table in step 3005, turns on relays X 11 ,} Detect changes between the input and past sensor inputs.

The microcomputer 30 performs step 3007.
The slide data of the seat portion 52 of the power seat 50 is set in . Once the slide data for the seat 52 is set, the microcomputer 30 executes a count routine 3008 (see FIG. 5b). This counting routine
This is a routine for counting the number of pulses output from RS ₁ and detecting the current position of the seat portion 52.

Hereinafter, the microcomputer 30 will be connected to the backrest portion 54 of the power seat 50 and the front portion 52 of the seat portion 52.
The same steps as above are performed for the knuckles a and 52b, front lift, and rear lift (steps 3009 to 3014).

Seat part 5 of power seat 50 during manual setting
2. When the position of the backrest 54 etc. reaches the set limit position, the lock detection routine 3015 (see Figure 12) de-energizes the relays X ₁₁ , X ₁₂ , etc. and stops the motors M ₁ , M ₂ , etc. let

The microcomputer 30 executes steps 3005 to 3016 until the manual switch is turned off (step 3017). When the manual switch is turned off, the microcomputer 30 deenergizes all relays X ₁₁ , X ₁₂ , etc. (step 3018). The routine ends (step 3019).

c storage routine The microcomputer 30 performs step 200.
Step 2001a is executed from 0 to determine whether the memory switch 36 is on.

If the memory switch 36 is off, the process ends (step 2023), and if it is on, the process ends.
Step 2001b is executed to determine whether or not the storage error-operation prevention switch 70 is on.
The microcomputer 30 prohibits all interrupts until the erroneous operation prevention switch 70 is turned off (step 200).
Execute 1c).

When the erroneous operation prevention switch 70 is turned off, the microcomputer 30 at step 2002
It is determined whether the loop counter is over (step 2002), and when the loop counter is over,
Turn on the buzzer (step 2003). Then,
The microcomputer 30 determines whether the manual switch is on or off (step 2004), and if the manual switch is on, turns off the buzzer (step 20).
19) Do.

When the manual switch is off, the microcomputer 30 selects the select switches 40, 42, 4.
4 and/or 46 is determined to be on or off (step 2005). Select switch 40,4
2, 44 and/or 46 are off, it is determined whether the loop counter is over (step 20).
20) If it is over, the buzzer is turned off (step 2021) and the process ends (step 2023); if it is not over, the process returns to step 2004.

Select switch 40, 42, 44 or 4
6 is on, the microcomputer 30 turns off the buzzer (step 2006) and turns on the secret switch and owner switch.
It is determined whether it is off (step 2007). If only the secret switch or both switches are on,
After determining whether the select switches 40, 42, 44, 46 and the memory switch 36 are on or off (step 2018), the process ends (step 2023).

On the other hand, when only the owner switch is on, the microcomputer 30 goes to step 200.
Execute step 8. Select switch 40, 42, 4
If only one of 4 and 46 is on, it is determined that the loop counter has exceeded (step 200).
9), and if it is over, turn on the buzzer (step 2010). If the loop counter is not over, the process returns to step 2007. Also, in step 2008, select switches 40, 42, 44
and 46 are both off, step 2
018 is executed.

Thereafter, in step 2011, the microcomputer 30 switches the select switches 40, 42,
It is determined whether only one of 44 and 46 is on, and if so, it is determined in step 2012 whether or not the loop counter is over.
If the buzzer is not on, the buzzer is turned off (step 2022) and step 2018 is executed.

The microcomputer 30 repeats steps 2011 and 2012 until the loop counter overflows.
is repeatedly executed, and when the loop counter exceeds the limit, interrupts are completely disabled (step 2013), and the contents of the current position are transferred to the specified select switch 4.
Addresses corresponding to 0, 42, 44 and 46 are stored in memory (step 2014). After that, the microcomputer 30 allows all interrupts (step 2).
015), turns off the buzzer (step 2016), and rings the buzzer twice (step 2017), then executes the already explained step 2018, and then ends the process (step 2023).

d Reproduction Routine In the reproduction routine, the microcomputer 30
determines whether the select switches 40, 42, 44, and 46 are on or off in step 4000 of FIG. 7a, and if they are off, executes a storage routine;
If it is on, the playback error prevention switch 72
steps 400a and 400 until
Execute b.

When the erroneous operation prevention switch 72 is turned off for reproduction, the microcomputer 30 determines whether only one of the select switches 40, 42, 44, and 46 is on (step 4001); If only one is on,
Determine which of the select switches 40, 42, 44 and 46 is on (step 400)
2) Do.

Next, the microcomputer 30 determines whether or not there is stored data (step 4003), and if there is stored data, it turns on the buzzer (step 4004). Thereafter, the microcomputer 30 detects whether the selections of the select switches 40, 42, 44, and 46 have changed in step 4005, and if there is a change, turns off the buzzer (step 4006); if there is no change, the microcomputer 30 turns off the buzzer (step 4006). executes steps 4005 and 4006 until the loop counter is up.

In this state, when the loop counter is up, the buzzer is turned off (step 4008), the current value of each part of the power seat 50 is compared with the set value (step 4009), the amount of movement of each part is calculated (step 4010), and Determine the (pass) part where the position of the power seat 50 is not set (Step 4)
011) Do.

First, regarding the sliding of the seat portion 52 of the power seat 50 in the longitudinal direction, the microcomputer 3
0 executes step 4012 and determines whether it is a slider pass. If it is a pass, step 401
Step 7 (see Figure 7b) is executed, and if it is not a pass, relay _X11 or _X12 is turned on (step 4013), and the loop counter is set to step 40.
The subroutine 4014 (see FIG. 8) and the slider check routine 4015 are executed until the count is counted up at 16.

Next, regarding the knuckle in the front-rear direction of the backrest portion 54 of the power seat 50, the microcomputer 30 executes step 4017 to determine whether or not the knuckle has passed. In the case of Natsukuru Pass,
Step 4023 is executed, and if it is not a pass, relay _X21 or _X22 is turned on (step 4018) and the loop counter is set to step 402
Subroutine 40 until count up at 2
19 (see FIG. 8), a slider check routine 4020 and a knuckle routine 4021 are executed.

The front lifter and rear lifter of the seat portion 52 of the power seat 50 are also set in substantially the same manner as described above (steps 4023 to 4037).

When the regeneration of the power sheet 50 is completed as described above, the microcomputer 30 turns on the buzzer twice in step 4038.

Check routine during playback Each check routine during playback (4015, 40
21, 4028, etc.), as shown in FIG. 9, each of the slider check, nut check, front lifter check, and rear lifter check includes a determination as to whether or not the starting and running values of each part of the power seat 50 are zero (step 6001). ,600
Steps 4, 6007, and 6010) are performed, and then the stop data set for the slide, knuckle, front lifter, and rear lifter is executed (steps 6002 and 6010).
6005, 6008 and 6011).

Thereafter, the microcomputer 30 turns off the relays X ₁₁ , X ₁₂ .
If there is no change in step 4, the process ends; if there is a change, an offset value is set to be used for correction (step 6015), and the error correction routine 6016 is executed.
(See FIG. 11) and ends.

f Correction Routine The correction routine includes correction using the stop switch 38 and correction using a manual switch.

In the correction by the stop switch 38, the microcomputer 30 sets mask data for each relay X ₁₁ , X ₁₂ , . . . in steps 4010 to 7011, and detects a change in the relay output (step 7012). After that, the microcomputer 30 detects whether or not there is a change in each part of the power sheet 50 by masking it with the masking data (step 7006), and if there is a change, sets an offset value to be used for correction (step 70).
07), the error correction routine 6016 (first
(See Figure 1). This step 7006,
7007 and routine 6016 are executed until each part of the power seat 50 is executed (step 7009), and then the routine ends (step 701).
3).

For correction using a manual switch, steps 7000 and 7 are similar to those for correction using stop switch 38.
After executing 001, the microcomputer 30
The manual switch data input in the manual routine and the current manual switch state are detected (step 7).
If it is determined that there is a change, the current manual switch state is replaced with manual switch data in step 7004, and then in step 7005. , to detect changes in the manual switch. Thereafter, the microcomputer 30 executes steps 7006, 7007, 6016, 7009 and 7013.

g Error Correction Routine In this error correction routine, the microcomputer 30 determines whether or not there is a change in the focused switch of each part of the masked power seat 50 (step 9001), and if there is no change, the process ends (step 9020). If there is a change, it is determined whether relays X ₁₁ , X ₁₂ , etc. of each part are both turned on (step 9002).

If relays X ₁₁ , X ₁₂ , etc. are both turned on, the process returns to the initial setting 9011, and if they are not turned on, the microcomputer 30
It is determined whether the seat portion 52 of the power seat 50 moves forward (step 9003), and if it moves forward, the seat portion 52 moves forward.
After adding the offset value to the current position data of step 2 (step 9016), the process ends (step 902).
0), and if it is not moving forward, it is determined in step 9004 whether or not the seat portion 52 is moving backward.

If the seat 52 is in the backward position, the process ends after subtracting the offset value from the current position data of the seat 52 (step 9020), and if the seat 52 is not in the backward position,
The microcomputer 30 performs the same operations as described above for the knuckle of the backrest 54 and the front and rear lifters of the seat 52 (steps 9005 to 9010, steps 9012 to 9).
019).

h Lock Detection Routine In the lock detection routine, the microcomputer 30 executes step 800 in the case of a manual routine.
After executing step 8001 from 0 and manually setting data for relay output, step 800
Execute 4.

On the other hand, in the case of the playback routine, the microcomputer 30 executes steps 8002 to 8003, sets relay output data during playback, and then executes step 8004.

In step 8004, the microcomputer 30 selects the current sensor (reed switch).
After detecting a change in the input (RS ₁ , RS ₂ , . . . ) and the past input on the data table, the past sensor input on the data table is replaced with the current sensor input (step 8005).

Next, the microcomputer 50 masks the relay output data and detects ON of the relays X ₁₁ , X ₁₂ , . . . for only one portion of the power seat 50 (step 8006). This determines whether the detected relay is on or not. If it is not on, the lock counter corresponding to that part is cleared (step 8010), and if it is on,
The microcomputer 30 determines whether there is a change in the sensor (step 8008).

If there is a change in the sensor, the microcomputer 30 executes step 8010, and if there is no change in the sensor, it adds 1 to the lock counter for that part (step 8009).

At step 8011, the microcomputer determines whether the lock counter is up. If the lock counter is up, the microcomputer deenergizes (turns off) the relay at the above location and uses it as relay output data (step 8012).

The microcomputer 30 checks whether the above steps 8006 to 8012 have been executed for each part of the power seat 50, and ends the process (step 8014).

As described above, according to the embodiment of the present invention, preset seat positions can be stored and reproduced by operating a switch.

[Brief explanation of the drawing]

FIG. 1a is a block diagram of an embodiment of a control device for an automobile power seat according to the present invention, FIG. 1b is a perspective view showing the entire control device for an automobile power seat shown in FIG. Figure c is a perspective view of the input device;
Figures 2a and 2b are side and rear views showing the movement of an automobile power seat, respectively, Figure 3 is a perspective view showing the configuration of the mechanical parts of the power seat, and Figure 4 is a flowchart of the main routine. , FIG. 5a is a flowchart of the manual routine, FIG. 5b is a flowchart of the counting routine, FIG. 6 is a flowchart of the memory routine, and FIGS. 7a, 7b, and 7c are the playback routine. 8 is a flowchart of a subroutine in the reproduction routine, FIG. 9 is a flowchart of a check routine during reproduction, FIG. 10 is a flowchart of a correction routine, and FIG. 11 is a flowchart of an error correction routine. FIG. 12 is a flowchart of the lock detection routine. 30...Microcomputer, 32...Input device, 50...Power seat, 52...Seat portion, 5
2a...front part, 52b...rear part, 54...backrest part, 70, 72...misoperation prevention switch,
X ₁₁ ,X ₁₂ ,X ₂₁ ,X ₂₂ ,X ₃₁ ,X ₃₂ ,X ₄₁ ,X ₄₂ ,…
...Relay, RS ₁ to RS ₄ , ...Reed switch.

Claims (1)

[Scope of Utility Model Registration Claim] A seat supported on the floor of a driver's seat of an automobile, the adjustment elements of which can be moved and adjusted according to the seated driver, and a motor that drives each adjustment element of the seat. a motor drive device, a movement sensor that outputs a signal corresponding to the amount of movement of each adjustment element of the seat, a storage command signal that instructs storage of a target position of the adjustment element of the seat, and an adjustment element of the seat. an input device for outputting a reproduction command signal for instructing reproduction to a target position; The current position of each adjustment element of the seat is calculated from the movement signal of each adjustment element of the seat input from the movement sensor, and this current position and the target position of the adjustment element of the seat according to the driver input from the storage device are calculated. and a control device for outputting a command signal to the drive device so that the two match, and a control device for a power seat for an automobile, which stores and reproduces a target position of a seat adjustment element by operation. A control device for a power seat for an automobile, comprising an erroneous operation prevention switch that outputs a prohibition signal to the control device.