JP4687396B2 - Vehicle seat movement control device - Google Patents

Description

  The present invention relates to a vehicle seat movement control device, and more particularly to a vehicle seat movement control device that controls the movement of a vehicle seat by counting the number of pulse rotations of a motor or the like.

  Conventionally, a so-called electric seat in which a vehicle seat is movable by a motor has been proposed. Further, in such an electric seat, the slide movement amount of the vehicle seat is detected by counting the pulses of the drive current input to the motor, and the detected slide movement amount is stored, and the vehicle seat is stored. An electric seat with a memory function has been proposed in which the vehicle seat is returned to the stored position when the vehicle is moved.

  However, in the above-mentioned electric seat with a memory function, even after the vehicle seat movement instruction is given by the slide button or the like, even after the current to the motor is cut off, the motor rotates due to inertia, etc. The obtained movement amount of the vehicle seat shifts with the passage of time.

Therefore, in the technique described in Patent Document 1, current detection means for detecting the current of the DC motor, pulse conversion means for converting the pulsation of the detected current into a pulse waveform, pulse counting means for counting pulses, and the number of pulses Correction based on the number of pulses for a predetermined pulsation of the motor current accompanying the back electromotive force of the DC motor after stopping the voltage application, the current position storage means for storing the current movement position stored in the number of pulses Correction value retrieval means for retrieving a value from a pre-created table, the number of pulses for the pulsation of the motor current when the voltage is applied, the number of pulses for the predetermined pulsation of the motor current associated with the counter electromotive force after the voltage application is stopped, and It has been proposed to include a movement position calculation means for calculating the correction value by adding the correction value to the number of pulses at the current position, and a current position update means for updating the current position based on the calculated movement position. . That is, in the technique described in Patent Document 1, the displacement of the moving position is corrected based on the number of pulses for a predetermined pulsation accompanying the motor back electromotive force after the voltage application is stopped. When the reciprocating motion is repeated, an accurate detected moving position can be obtained without accumulating a deviation from the actual moving position.
JP-A-8-168291

  However, in the technique described in Patent Document 1, the current position is corrected by searching for a correction value from a table created in advance based on the number of pulses corresponding to a predetermined pulsation associated with the motor back electromotive force. It is complex and there is room for improvement.

  The present invention has been made in consideration of the above facts, and an object thereof is to accurately detect the movement position of a vehicle seat with a simple configuration and control.

In order to achieve the above object, according to the first aspect of the present invention, there is provided a counting means for counting drive pulses input to a motor for moving a vehicle seat, and a count value of the counting means as a moving position of the vehicle seat. As a moving position storage means for storing each time the vehicle seat moves, a detecting means for detecting that the vehicle seat has reached a predetermined position, and when the detection means detects that the predetermined position has been reached. Correction means for correcting the movement position stored in the storage means to a count value corresponding to the predetermined position, and movement for driving the motor to move the vehicle seat to the predetermined position every predetermined period Means .

  According to the first aspect of the present invention, the counting means counts the driving pulses input to the motor for moving the vehicle seat, and the movement position storage means stores the count value of the counting means of the vehicle seat. The movement position is stored for each movement of the vehicle seat, and the movement position of the vehicle seat can be specified from the count value stored in the storage means.

Further, the detecting means detects that the vehicle seat has reached a predetermined position. The detection means can be provided in the middle of the moving section of the vehicle seat in the vehicle front-rear direction. For example, as in the invention according to claim 6 , the start of deployment of the airbag device is detected in the vehicle longitudinal direction position of the vehicle seat. It is possible to apply a position sensor provided for control according to the above.

Then, the correction means corrects the movement position stored in the storage means to a count value corresponding to the predetermined position when the detection means detects that the predetermined position has been reached. That is, even if the number of drive pulses stored in the storage means shifts due to inertial rotation of the motor or the like, the count value can be corrected to the predetermined position when the detection means detects that the predetermined position has been reached. The moving position of the vehicle seat can be accurately detected with a simple configuration and control. Further, the moving means drives the motor to move the vehicle seat to a predetermined position every predetermined period. That is, by providing the moving means, the correction by the correcting means can be performed every predetermined period, so that periodic correction can be performed without performing a special operation.

  The counting means counts the driving pulse with reference to a predetermined position as in the invention described in claim 2, and when the correcting means detects that the predetermined position has been reached by the detecting means, You may make it correct | amend a movement position to the count value from the reference | standard previously counted by the counting means to the predetermined position. At this time, as in the invention described in claim 3, the counting means may count the drive pulse with reference to the position instructed to be stored by the instructing means for instructing to store the position of the vehicle seat. And like the invention of Claim 4, you may make it count a drive pulse on the basis of the position of the vehicle seat when the power supply is connected to the battery mounted in the vehicle.

  Further, the counting means counts the driving pulse with reference to the predetermined position detected by the detecting means as in the invention described in claim 5, and the correcting means detects that the predetermined position has been reached by the detecting means. At this time, the count value stored in the storage means may be reset.

  Further, in the invention according to any one of claims 1 to 5, as in the invention according to claim 6, the motor vehicle is driven to move the vehicle seat to a predetermined position every predetermined period. You may make it further provide a moving means. That is, by further providing the moving means, correction by the correcting means can be performed every predetermined period, and periodic correction can be performed without performing a special operation.

As described above, according to the present invention, the drive pulses input to the motor for moving the vehicle seat are counted and stored as the moving position of the vehicle seat, and the fact that the vehicle seat has reached a predetermined position is determined. When the detection means is provided and the detection means detects that the predetermined position has been reached, the position of the vehicle seat stored in the storage means is corrected to a count value corresponding to the predetermined position, and every predetermined period, by Rukoto moving the drive to the vehicle seat of the motor to a predetermined position, with a simple configuration and control, the moving position of the vehicle seat can be accurately detected, there is an effect that.

Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings.
[First basic form]
FIG. 1 is a block diagram showing the configuration of a vehicle seat movement control device according to the first basic form of the present invention.

  The vehicle seat movement control device 10 of the present invention stores the position of the vehicle seat 12 in the vehicle front-rear direction, and performs control to return to the stored position when the vehicle seat 12 is moved. It has a so-called memory function.

  The vehicle seat 12 is provided on the vehicle body via a seat rail 14 and is provided so as to be movable in the vehicle front-rear direction on the seat rail 14 as indicated by a solid line and a dotted line in FIG. The seat rail 14 is provided with a slide motor 16 for moving the vehicle seat 12 in the vehicle front-rear direction. The vehicle seat 12 moves in the vehicle front-rear direction by forward / reverse rotation of the slide motor 16. Is done.

  The slide motor 16 is connected to the memory sheet ECU 20, and the rotation is controlled by the memory sheet ECU 20. A power seat switch 18 is connected to the memory seat ECU 20, and when the occupant operates the power seat switch 18, the rotation of the sliding motor 16 is controlled, and the vehicle seat 12 is moved in the vehicle front-rear direction. The

An airbag ECU 24 is connected to the memory seat ECU 20 via the in-vehicle LAN 22, and a detection result of a slide position sensor 26 connected to the airbag ECU 24 is input to the memory seat ECU 26. The slide position sensor 26 is a position sensor for controlling the deployment start timing of the airbag, and is provided on the seat rail 14 or the vehicle seat 12 (the seat rail 14 in the present basic embodiment). While detecting that the predetermined position has been reached, it is determined whether it is before or after the predetermined position, and the determination result is output. As the slide position sensor 26, for example, a Hall element or a light emitting / receiving element may be applied, or the technique described in Japanese Patent Application Laid-Open No. 2004-210166 may be applied.

  In addition to the airbag ECU 24, a driver's seat door ECU 28, an engine ECU 30, an instrument panel ECU 32, and the like are connected to the in-vehicle LAN 22.

The driver's seat door ECU 28 outputs operation states of various switches such as a power window switch and a door mirror switch provided on the driver's seat side door to the in-vehicle LAN 22. In this basic mode, a memory set operation unit 34 is provided on the driver's seat side door, and an operation result of the memory set operation unit 34 is output to the in-vehicle LAN 34 and input to the memory seat ECU 20. The memory set operation unit 34 stores the position of the vehicle seat 12 in the vehicle front-rear direction, and moves the vehicle seat 12 in the vehicle front-rear direction by operating the power seat switch 18. The memory set operating unit 34 is a switch for performing an operation such as moving the vehicle seat 12, and the memory set operation unit 34 is for storing the slide position of the vehicle seat 12 and for moving the vehicle seat 12 to the storage position. The regeneration switch is provided.

The engine ECU 30 is connected to various sensors for performing engine control, and outputs detection results of the various sensors to the in-vehicle LAN 22 as necessary. In this basic form, a neutral start switch 36 for detecting the shift position of the automatic transmission is connected to the engine ECU 30, and the detection result of the neutral start switch 36 is output to the in-vehicle LAN 22.

The instrument panel ECU 32 is connected to various sensors for controlling a combination meter and the like, and outputs the detection results of the various sensors to the in-vehicle LAN 22 as needed. In this basic form, the instrument panel ECU 32 is connected with a key unlock warning switch 38 for detecting insertion of a key plate into the ignition key cylinder, a courtesy switch 39 for detecting door opening, and an ignition switch 40. The detection result of each switch is output to the in-vehicle LAN 22.

Here, a description will be given of the storage / reproduction processing for storing the position of the vehicle seat 12 and moving the vehicle seat 12 to the stored position, which is performed by the memory seat ECU 20 of the vehicle seat movement control apparatus 10 according to the present basic embodiment. .

The memory sheet ECU 20 is driven by applying a pulse current to the slide motor 16. At this time, the memory seat ECU 20 counts the number of pulses applied to the slide motor 16, stores the count value whenever the vehicle seat 12 moves, and estimates the movement position of the vehicle seat 12 with the stored number of pulses. To do. In this basic mode, as a reference for counting the number of pulses applied to the slide motor 16, the position of the vehicle seat 12 when the memory set is instructed by the memory set operation unit 34 is used as a pulse count start reference. That is, the number of pulses is counted with 0 when the memory set instruction is given.

  When the power seat switch 18 is operated and the vehicle seat 12 is moved in the vehicle front-rear direction, the number of pulses of the current applied to the slide motor 16 is counted based on the memory set position. The slide motor 16 is driven so as to return to the original position by the number of stored pulses when it is stored whenever the sheet 12 is moved and the reproduction is instructed by the memory set operation unit 34. As a result, the vehicle seat 12 is moved to the stored position.

FIG. 2 is a flowchart showing an example of the flow of the storage / reproduction process performed by the memory ECU 20 of the vehicle seat movement control device 10 according to the first basic form of the present invention.

  When the memory set operation unit 34 is operated by the occupant, in step 100, it is determined whether or not a memory set instruction is issued. That is, it is determined whether or not the memory set operation unit 34 is operated by the occupant to give a memory set instruction for storing the current position of the vehicle seat 12, and if the determination is affirmative, the routine proceeds to step 102. If the result is negative, the routine proceeds to step 104. The operating conditions of the memory set are specifically, the ignition switch 40 is on, the signal of the neutral start switch 36 is in the P range, and the operation of the power seat switch 18 or the reproduction instruction of the memory set operation unit 34 is performed. Memory sets are allowed when not.

  In step 102, the memory seat ECU 20 resets the counter and starts pulse counting. That is, when the movement of the vehicle seat 12 in the vehicle front-rear direction is instructed by the power seat switch 18, the number of pulses of the current applied to the slide motor 16 is started and every time the vehicle seat 12 moves. It is memorized at any time. Note that when the memory seat ECU 20 performs pulse counting, for example, the movement in the vehicle front side direction is positively counted, and the movement in the vehicle rear side direction is negatively counted.

  In step 104, it is determined whether or not the regeneration operation is performed. That is, it is determined whether or not a regeneration instruction for moving the vehicle seat 12 to the memory set position is given by the occupant operating the memory set operation unit 34. If the determination is affirmative, the process proceeds to step 106, and If so, the process ends and other processes are performed. In detail, the operation condition of the regeneration is when the ignition switch 40 is on, the signal of the neutral start switch 36 is P range, the power seat switch 18 is off, and the key unlock warning switch 38 is off. Regeneration is permitted when the power seat switch 18 is turned off within 30 seconds after satisfying the two conditions of opening the seat door (the courtesy switch 39 is on).

  In step 106, the vehicle seat 12 is moved to the reset position of the counter of the memory seat ECU 20, the process is terminated, and other processes are performed. That is, the number of pulses currently stored in the memory seat ECU 20 is read, and the slide motor 16 is driven so that the number of pulses becomes zero, thereby moving the vehicle seat 12 to the memory set position.

By the way, in this basic form, as described above, since the number of pulses of the current applied to the sliding motor 16 is counted, the inertial rotation immediately after the operation of the power seat switch 18 is finished and the current application is stopped. Thus, the position of the vehicle seat 12 estimated from the number of pulses counted by the above and the actual position of the vehicle seat 12 are shifted. Therefore, the memory sheet ECU 20 performs correction of the counted number of pulses (hereinafter simply referred to as correction processing).

FIG. 3 is a flowchart showing an example of the flow of correction processing performed by the memory seat ECU 20 of the vehicle seat movement control device 10 according to the first basic form of the present invention.

  When the power seat switch 18 is operated by the occupant, first, at step 200, it is determined whether or not the memory is set. The determination is made by determining whether or not the memory set operation unit 34 is operated by the occupant to set the memory of the vehicle seat 12, and if the determination is negative, the process is terminated. Other processing is performed. If the result is affirmative, the process proceeds to step 202.

  In step 202, it is determined whether or not the position of the slide position sensor 26 has been passed continuously from the reset position (the position where the counter is reset by the memory set instruction). This determination is made by detecting that the slide position sensor 26 has reached a predetermined position by continuously operating the power seat switch 18 and the vehicle seat 12 passing through the predetermined position where the slide position sensor 26 is disposed. If the determination is affirmative, the process proceeds to step 204. If the determination is negative, the process proceeds to step 206.

  In step 204, the count value when the slide position sensor 26 passes (when the slide position sensor 26 detects a predetermined position of the vehicle seat 12) is stored in the memory seat ECU 20 as the correction reference pulse number. That is, the number of pulses counted from the memory set position to the slide position sensor 26 is stored as the correction reference pulse number.

Next, in step 206, it is determined whether or not the slide position sensor 26 has been passed. The determination is made by the slide position sensor 26 as to whether or not it has been detected that the vehicle seat 12 has reached a predetermined position. If the determination is negative, the process is terminated and other processes are performed. If the determination is affirmative, the routine proceeds to step 208. In step 208, it is determined whether or not the correction reference pulse number is stored. That is, it is determined in step 204 whether or not the correction reference pulse number is stored. If the determination is negative, the process is terminated as it is, and other processes are performed. If the determination is affirmative, step 210 is performed. Migrate to

  In step 210, the count value when passing through the slide position sensor 26 is corrected to the correction reference pulse number. That is, when the number of pulses corresponding to the distance from the memory set position to the slide position sensor 26 is shifted due to inertial rotation of the slide motor 16 or the like, correction can be made in this step.

Thus, in this basic form, the number of pulses stored for controlling the movement position of the vehicle seat 12 can be corrected using the slide position sensor 26 provided for controlling the airbag. With a simple configuration and control, the movement position of the vehicle seat 12 can be accurately detected.

Note that step 202 and step 204 may be performed only when a memory set is made and the slide position sensor 26 is first passed. That is, the number of pulses corresponding to the distance from the memory set position serving as a reference when correcting the number of pulses to the slide position sensor 26 is stored as the number of pulses when passing the slide position sensor 26 for the first time after performing the memory setting. Then, it may be corrected based on this.
[Second basic form]
Next, the vehicle seat movement control device according to the second basic form of the present invention will be described.

In the first basic form, the reference for counting the number of pulses of the current applied to the slide motor 16 is used as the reference (the position where the memory set instruction for storing the position of the vehicle seat 12 is given by the memory set operation unit 34). The counter is reset at the memory set position). However, in the second basic form, the position of the vehicle seat 12 when the power is supplied to the vehicle seat movement control device is used as a reference. Since it is the same as 1 basic form, detailed description is abbreviate | omitted.

That is, in the second basic form, the counter of the memory seat ECU 20 is reset when a power source such as a battery is connected when the vehicle is produced in a factory. As a result, the position of the vehicle seat 12 at the time of factory production becomes the reference position, and the memory seat ECU 20 counts the number of pulses from the reference position and stores it whenever the vehicle seat 12 moves, so that the vehicle seat 12 Perform location storage and playback.

FIG. 4 is a flowchart showing an example of the flow of the storage / reproduction process performed by the memory ECU 20 of the vehicle seat movement control device according to the second basic form of the present invention.

  When the memory set operation unit 34 is operated by the occupant, in step 300, it is determined whether or not a memory set instruction is issued. That is, it is determined whether or not the memory set operation unit 34 is operated by the occupant to give a memory set instruction for storing the current position of the vehicle seat 12, and if the determination is affirmative, the process proceeds to step 302. If not, the process proceeds to step 304. The operating conditions of the memory set are specifically, the ignition switch 40 is on, the signal of the neutral start switch 36 is in the P range, and the operation of the power seat switch 18 or the reproduction instruction of the memory set operation unit 34 is performed. Memory sets are allowed when not.

  In step 302, the memory seat ECU 20 stores the number of pulses at the time of the memory set instruction. That is, the number of pulses counted from the reference position to the position of the vehicle seat 12 when the memory setting instruction is issued is stored in the memory seat ECU 20 and the process proceeds to step 304.

  In step 304, it is determined whether or not a reproduction instruction is given. That is, it is determined whether or not a regeneration instruction for moving the vehicle seat 12 to the memory set position is given by the occupant operating the memory set operation unit 34. If the determination is affirmative, the process proceeds to step 306, and If so, the process ends and other processes are performed. In detail, the operation condition of the regeneration is when the ignition switch 40 is on, the signal of the neutral start switch 36 is P range, the power seat switch 18 is off, and the key unlock warning switch 38 is off. Regeneration is permitted when the power seat switch 18 is turned off within 30 seconds after satisfying the two conditions of opening the seat door (the courtesy switch 39 is on).

  In step 306, the vehicle seat 12 is moved to the position corresponding to the number of pulses stored in the memory seat ECU 20, the process is terminated, and other processes are performed. That is, the number of pulses stored in the memory seat ECU 20 is read, and the slide motor 16 is driven so that the number of pulses is equal to the number of pulses stored in step 302, whereby the vehicle seat 12 is placed at the memory set position. Is moved.

FIG. 5 is a flowchart showing an example of the flow of correction processing performed by the memory seat ECU 20 of the vehicle seat movement control device according to the second basic form of the present invention.

  When the power seat switch 18 is operated by the occupant, first, at step 400, it is determined whether or not the position of the slide position sensor 26 has been passed continuously from the origin position (pulse count reference position). This determination is made as to whether or not it is detected that the slide position sensor 26 has reached a predetermined position by continuously operating the power seat switch 18 and passing the vehicle seat 12 through the predetermined position where the slide position sensor 26 is disposed. If the determination is affirmative, the process proceeds to step 402. If the determination is negative, the process proceeds to step 404.

  In step 402, the count value when the slide position sensor 26 passes (when the slide position sensor 26 detects a predetermined position of the vehicle seat 12) is stored in the memory seat ECU 20 as the correction reference pulse number. That is, the number of pulses counted from the origin position (pulse count reference position) to the slide position sensor 26 is stored as the correction reference pulse number.

Next, in step 404, it is determined whether or not the slide position sensor 26 has been passed. The determination is made by the slide position sensor 26 as to whether or not it has been detected that the vehicle seat 12 has reached a predetermined position. If the determination is negative, the process is terminated and other processes are performed. If the determination is affirmative, the process proceeds to step 406. In step 406, it is determined whether the correction reference pulse number is stored. That is, it is determined in step 402 whether or not the correction reference pulse number is stored. If the determination is negative, the processing is terminated as it is and other processing is performed. If the determination is affirmative, step 408 is performed. Migrate to

  In step 408, the count value when passing through the slide position sensor 26 is corrected to the correction reference pulse number. That is, when the number of pulses corresponding to the distance from the memory set position to the slide position sensor 26 is shifted due to inertial rotation of the slide motor 16 or the like, correction can be made in this step.

As described above, even when the reference for counting the pulses of the current applied to the slide motor 26 is different, the vehicle using the slide position sensor 26 provided for controlling the airbag is used as in the first basic mode. Since the number of pulses stored for controlling the movement position of the vehicle seat 12 can be corrected, the movement position of the vehicle seat 12 can be accurately detected with a simple configuration and control.

In step 400 and step 402, the pulse number corresponding to the distance to the slide position sensor 26 is counted and stored in advance when the origin of the pulse count start is determined, that is, at the time of factory shipment. It can be omitted.
[Third basic form]
Next, the vehicle seat movement control device according to the third basic form of the present invention will be described.

In the first basic form, the reference for counting the number of pulses of the current applied to the slide motor 16 is used as the reference (the position where the memory set instruction for storing the position of the vehicle seat 12 is given by the memory set operation unit 34). The counter is reset at the memory set position). However, in the third basic mode, the position of the slide position sensor 26 is used as a reference, and the device configuration is the same as that of the first basic mode, so detailed description thereof is omitted. . In addition, with respect to the storage / reproduction processing, the reference for pulse counting is only based on the position of the slide position sensor 26 with respect to the second basic form, and detailed description thereof is omitted because it is the same processing.

FIG. 6 is a flowchart showing an example of the flow of correction processing performed by the memory seat ECU 20 of the vehicle seat movement control device according to the third basic form of the present invention.

In the correction processing in the third basic form, the position of the slide position sensor 26 is used as a reference, so that the processing for storing the above-mentioned correction reference pulse number for correcting the pulse number is not required. In step 500, it is first determined whether or not the slide position sensor 26 has been passed. The determination is made by the slide position sensor 26 as to whether or not it has been detected that the vehicle seat 12 has reached a predetermined position. If the determination is negative, the process is terminated and other processes are performed. If the determination is affirmative, the process proceeds to step 502. In step 502, the count value is reset when the slide position sensor 26 passes, the process is terminated, and other processes are performed. That is, when it is detected by the slide position sensor 26 that the vehicle seat 12 has reached the predetermined position, the count value stored in the memory seat ECU 20 is reset because it is the reference position. Therefore, since it is reset every time it passes through the slide position sensor 26, the origin of the pulse count can be calibrated.

As described above, even when the reference for counting the pulses of the current applied to the slide motor 16 is different, the vehicle using the slide position sensor 26 provided for controlling the airbag is used as in the first basic mode. Since the number of pulses stored for controlling the movement position of the vehicle seat 12 can be corrected, the movement position of the vehicle seat 12 can be accurately detected with a simple configuration and control.
[Embodiment]
Next, a description will be given of a vehicle seat movement control apparatus according to implementation of the embodiment of the present invention.

Figure 7 is a block diagram showing a configuration of a vehicle seat movement control apparatus according to implementation of the embodiment of the present invention.

In the first to third basic forms, the correction process is performed by operating the power seat switch 18 by the occupant. However, in the present embodiment, the correction process is automatically performed. As compared with the first basic form, only the driver's seat occupant detection sensor 42 is further connected to the memory seat ECU 20 as shown in FIG.

  In the present embodiment, the detection result of the presence / absence of a passenger in the driver's seat is input to the memory seat ECU 20, and the ignition switch 40 is turned off every time a predetermined period (for example, one year) elapses. When there is no passenger in the driver's seat, correction processing is automatically performed. In the present embodiment, the predetermined period is performed by the memory seat ECU 20 counting the clock. However, the present invention is not limited to this. For example, date information and the like included in the navigation system may be acquired.

Figure 8 is a flow chart showing an example of correction processing flow performed in the memory sheet ECU20 of the vehicle seat movement control apparatus according to implementation of the embodiment of the present invention.

  In step 600, clocks for performing correction processing are counted. That is, the clock in the memory seat ECU 20 is counted, and measurement for a predetermined period is started.

  Next, in step 602, it is determined whether a certain time has elapsed. The determination is made by determining whether or not a predetermined period of time has elapsed based on the count value of the clock. If the determination is negative, the process returns to step 600 and the clock count is continued. If so, the process proceeds to step 604.

  In step 604, it is determined whether or not the ignition switch (IG) 40 is off. That is, the state of the ignition switch 40 connected to the instrument panel ECU 32 is acquired via the in-vehicle LAN 22, and it is determined whether or not the ignition switch 40 is off. If the determination is negative, the process returns to step 600 and the above processing is repeated. If the determination is positive, the process proceeds to step 606.

  In step 606, it is determined whether there is no passenger in the driver's seat. The determination is made by determining whether or not the driver's seat occupant is detected by the driver's seat occupant detection sensor 42. If the determination is negative, the processing returns to step 600 and the above-described processing is repeated and affirmed. If YES, go to step 608.

In step 608, the current position of the vehicle seat 12 is stored, and the process proceeds to step 610. Since the current position of the vehicle seat 12 is not always the same as the memory set position, the current position is different from the memory set position stored by the operation of the memory set operation unit 34. Remember. Further, any one of the first to third basic forms may be applied as a reference for counting the number of pulses used for storing the position at this time.

  In step 610, the vehicle seat 12 is slid and the process proceeds to step 612. For example, when the memory seat ECU 20 recognizes the direction of the position of the slide position sensor 26, the slide motor 16 is driven so that the vehicle seat 12 moves in the direction of the slide position sensor 26, and the slide position sensor If the position 26 is not recognized by the memory sheet EUC20, the position is moved in a predetermined direction. If the predetermined position is not detected by the slide position sensor 26, the position is moved in the reverse direction.

  In step 612, it is determined whether or not the slide position sensor 26 has been passed. This determination is made by the slide position sensor 26 as to whether or not it has been detected that the vehicle seat 12 has reached a predetermined position. If the determination is negative, the routine returns to step 610 and the vehicle seat 12 slides. The process is continued until the determination is affirmed, and when the determination is affirmed, the process proceeds to step 614.

In step 614, a count value correction process is performed. That is, as the count value correction process, the correction method at the time of the correction process of the first to third basic forms can be applied. When the first basic form is applied, the count value when passing through the slide position sensor 26 Is corrected to the correction reference pulse number, and when the second basic form is applied, the count value when passing through the slide position sensor 26 is calculated as the correction reference pulse number (preliminary from the origin set at power-on to the slide position sensor 26 in advance In the case of the third basic form, the count value is reset when the slide position sensor 26 passes.

Next, in step 616, the vehicle seat 12 is moved to the original position, that is, the position stored in step 608. For example, when the first basic form is applied and stored at the time of storing the current position in step 608, the slide position sensor 26 detects the predetermined position from the position of the vehicle seat 12 at the time of storage. It is possible to return the vehicle seat 12 to the original position by storing the counted number of pulses and driving the slide motor 16 so as to rotate backward by the number of pulses.

  In step 618, the clock is reset and the process ends. That is, a new clock is started in step 600, and the correction process is performed after a predetermined period.

By performing the correction process in this way, in the present embodiment, when the vehicle seat movement control device of any one of the first to third basic forms is applied and the ignition switch 40 is turned off and the occupant is not in the vehicle In addition, the number of count pulses of the slide motor 16 can be automatically corrected.

It is a block diagram which shows the structure of the vehicle seat movement control apparatus concerning the 1st basic form of this invention. It is a flowchart which shows an example of the flow of the memory | storage reproduction | regeneration processing performed with memory ECU of the vehicle seat movement control apparatus concerning the 1st basic form of this invention. It is a flowchart which shows an example of the flow of the correction process performed by memory seat ECU of the vehicle seat movement control apparatus concerning the 1st basic form of this invention. It is a flowchart which shows an example of the flow of the memory | storage reproduction | regeneration processing performed by memory ECU of the vehicle seat movement control apparatus concerning the 2nd basic form of this invention. It is a flowchart which shows an example of the flow of the correction process performed by memory seat ECU of the vehicle seat movement control apparatus concerning the 2nd basic form of this invention. It is a flowchart which shows an example of the flow of the correction process performed by memory seat ECU of the vehicle seat movement control apparatus concerning the 3rd basic form of this invention. It is a block diagram showing a configuration of a vehicle seat movement control apparatus according to implementation of the embodiment of the present invention. Is a flowchart illustrating an example of correction processing flow performed in the memory seat ECU of the vehicle seat movement control apparatus according to implementation of the embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Vehicle seat movement control apparatus 12 Vehicle seat 14 Seat rail 16 Slide motor 20 Memory seat ECU
24 Airbag ECU
26 Slide position sensor 34 Memory set operation unit

Claims (6)

Counting means for counting drive pulses input to a motor for moving the vehicle seat;
Movement position storage means for storing the count value of the counting means as the movement position of the vehicle seat for each movement of the vehicle seat;
Detecting means for detecting that the vehicle seat has reached a predetermined position;
Correction means for correcting the movement position stored in the storage means to a count value corresponding to the predetermined position when the detection means detects that the predetermined position has been reached;
Moving means for driving the motor to move the vehicle seat to the predetermined position for each predetermined period;
A vehicle seat movement control device.   The counting means counts drive pulses with a predetermined position as a reference, and the correction means counts the count counted in advance by the counting means when the detection means detects that the predetermined position has been reached. The vehicle seat movement control device according to claim 1, wherein the movement position is corrected to a count value from a reference to the predetermined position.   3. The vehicle seat movement control device according to claim 2, wherein the counting means counts drive pulses with reference to the position instructed to be stored by the instruction means for instructing to store the position of the vehicle seat.   3. The vehicle seat movement control device according to claim 2, wherein the counting means counts drive pulses based on a position of the vehicle seat when the power supply is connected to a battery mounted on the vehicle.   The counting means counts drive pulses with reference to the predetermined position, and the correction means calculates the count value stored in the storage means when the detection means detects that the predetermined position has been reached. The vehicle seat movement control device according to claim 1, wherein the vehicle seat movement control device is reset. 6. The position sensor provided to control the start of deployment of the airbag device in accordance with a vehicle longitudinal direction position of a vehicle seat. The vehicle seat movement control device according to item.

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