JPS5875217A - Positioning controller on car - Google Patents

Abstract

PURPOSE:To make a limit switch of a mobile mechanism unnecessary, by assuming as the mobile mechanism reaches its limit position when the period of the position tracking pulse given from the mobile mechanism exceeds the prescribed value, and then setting the position data at the initial value. CONSTITUTION:A cab sheet driving controller EOCU drives motors M1-M6 when an SWIn is turned on and then drives the sheet main body, back sheet, head rest, etc. in a certain direction respectively. During this driving, the period of pulses given from encoders S1-S6 exceeds a certain level. In such case, a CPU3 stops the above-mentioned driving and sets a register at the present position within an NRAM at the initial value, i.e., the limit moving position. A user of the sheet drives motors M1-M6 by means by a switch of an input control board 13 and sets the sheet at a desired position and at the same time records the data to an RAM1. After this, the sheet can be set at a presribed position based on the above-mentioned data and regardless of the position of the sheet.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to position control for setting the postures of vehicle seats, mirrors, etc., and particularly to tracking control of the position of the posture setting mechanisms in positioning control.

The driver who drives the vehicle usually uses the steering wheel, accelerator,
Brakes, transmissions, switches, etc. are operated as appropriate in response to road conditions, weather, road signs, etc., but the positions of these operating ends are fixed. On the other hand, the physical characteristics of each driver vary greatly, and therefore the driver seat can be moved forward or backward according to each driver's preference.
The vertical and incline as well as the cushioning can be adjusted. Additionally, both the internal and external mirrors can be adjusted as appropriate depending on the driver's height and posture.

One car may be used by several people, and even if the same person is driving, the degree of fatigue and road conditions (drop-off route,
It is preferable to adjust the posture of the driver seat according to the uphill road (uphill road, one turn, etc.), but manual adjustment is cumbersome.
It's also a pain to have to adjust it every time you ride.

Therefore, recently, a microcomputer is installed on the vehicle, and data indicating physical characteristics is input manually into the microcomputer, and the corresponding seat posture setting data is calculated.The driver reads this posture data and operates the position adjustment device. , posture adjustment (Special Publication No. 54-43772), and
Posture adjustment device: i7? is equipped with a position sensor, and is also equipped with a manual adjustment device 1'1, and after adjusting the seat posture with the latter, the position sensor data (position sensor data) is associated with the identification code. Posture memory and setting (Utility Model No. 54-110
]: Publication No. 335 has been proposed. In addition, the present applicant has previously stored posture setting standard data in accordance with physical characteristics in a semiconductor storage device, and by manually inputting data indicating physical characteristics into a microcomputer, the posture setting standard data corresponding to the physical characteristics can be set. The seat posture is automatically determined by reading the standard seat setting data, and the seat posture can be adjusted and changed by manual switch operation and/or key operation, and the set seat posture is stored in a non-volatile semiconductor memory device. When a 1-weave classification code is entered, the setting number -1 corresponding to the identification code and stored in the non-volatile semiconductor memory device is stored in memory in association with the identification code.
・Applied for a driver seat that reads posture data and automatically sets the posture indicated by the posture data (Patent Application No. 38, 1982)
did. On the other hand, similar key operation adjustment settings have been proposed for mirrors as well (for example, Japanese Patent Application No. 55-798
No. 15).

However, in this type of adjustment setting for seat posture and mirror posture, data (digital position code) indicating those postures suitable for the driver is stored in a non-volatile read/write semiconductor memory, and the driver instructs the driver to read the memory and set the posture. Then, data (target data) is read from the non-volatile memory, current position data is obtained from the driver seat and mirror, the two are compared, and the attitude setting mechanism is driven until the two match.

In this type of on-vehicle positioning control, it is necessary to track the mechanism position; for example, in the above-mentioned patent application No.
In No. 8, limit switches are placed at the movement limit (lower limit and upper limit) positions of each mechanism, and those 1
When at least one limit switch is closed, the mechanism is stopped, and when at least one limit switch is closed, the mechanism position tracking data is moved to the origin (lower limit;
1) 17 to initialize to the upper limit (maximum value) for the small value)
I'm here. Since the movement range of each mechanism is predetermined, each mechanism is equipped with one limit switch to set the lower limit (or upper limit), and the upper limit (or lower limit) is reached by moving a predetermined amount from the lower limit (or upper limit). As a result, further driving will be stopped.

However, each mechanism requires one limit switch, and installing a limit switch not only raises costs and issues securing storage space, but also increases electrical wiring [7] This increase in the number of wiring is the most It is uneconomical.

The purpose of the present invention is to omit a limit switch in an on-vehicle positioning mechanism.

In order to achieve the above object, the present invention monitors an electric pulse for position tracking, which is built into the mechanism and generates a pulse every time the mechanism moves, during drive energization of the mechanism. When the cycle exceeds a predetermined value, it is determined that the mechanism has reached its limit position, and the drive energization is then increased.
Then, the position tracking amount, that is, the cumulative count value of addition and subtraction of the electrical pulses is set to a value indicating the limit, that is, initialized. This allows you to avoid using limit switches.
A limit position stop and a correspondence between the mechanism limit and the position tracking amount are performed.

In car seats and mirrors, the mechanism may decelerate or stop within its limits due to something getting stuck or a heavy object placed on it. In other words, it may stop due to overload.

In this case as well, it is preferable to stop the motor of the mechanism, but it is preferable not to initialize the position tracking amount. Therefore, in the embodiment of the present invention, a switch is provided to instruct the positioning of the mechanism origin (lower limit or upper limit), and when the switch is closed, the mechanism is driven toward the origin and the period of the electric pulse is set to a predetermined value. If it is above, it is assumed that the origin has been reached, and the drive bias is set to 1.
1. Second, set the position tracking amount to the value indicated at the origin (initialization)
do.

As long as the switch is open, if the electric pulse period extends beyond a predetermined time, it is considered that the mechanism is overloaded, and the drive energization is stopped, but the position tracking amount is not initialized. According to this, the protection against mechanism overload due to disturbance and the correspondence between the mechanism position and the position tracking amount become clearer, and it becomes unnecessary to determine the cause of overload stoppage and to adjust or reset the position tracking amount.

FIG. 1 shows an external perspective view of an embodiment of the present invention.

In Fig. 1, IO is a seat (driver seat), which is composed of a seat (driver seat) 11 and a seat back 12 that is rotatable relative to the seat.An operation board 1B is fixed to the seat 11 and is always open to the public. ing. PS is a pushbutton switch incorporating one of the first switches, PR is a pushbutton switch incorporating one of the first switches and a second switch.
It is a simultaneous type switch. Figures 1 and 2 (solid lines)
As shown in Fig. 10, when the seat 10 is in the seated position, if the push buttons of the switches PR and Pa are pressed, the first switch is closed, and the electronic control unit, which will be described later, is actuated.
The seat (base) 11 moves forward, and the seat back 12 tilts forward to take the walk-in position shown by the dotted line in FIG. When the seat 10 is in this walk-in position, turning the head of switch PS counterclockwise (FIG. 1) returns it to the seated position (solid line in FIGS. 1 and 2).

The outline of the posture setting mechanism installed in the seat 11 and the seatback 12 is shown in Fig. 8a (first side view of the entire interior of the seat), Fig. 3b (plan view of the interior of the seat space 11), and Fig. 3C (seatback). 12) is a front view of the inside of 12 as seen from the handle side. In this example, the attitude setting mechanism is configured to move the seat 11 relative to the base frame fixed to the floor of the axle.
Seat forward/backward drive mechanism 100 that slides the seat base supporting the seat back and forth. Seat height adjuster that raises and lowers the seat base, 11i! 1300. Seat pack $1 DI structure 200. The tilt of the seat back frame pivoted to the seat base is adjusted by the secondary cylinder. Seat back cushion changing mechanism 40 that adjusts the spring cushion of the seat back
0. The headrest height adjustment fil 1500 that drives the headrest HR up and down and the headrest longitudinal adjustment mechanism 600 that drives the headrest HR back and forth are 6m.

In Fig. 3a, reference numeral 14 (two in front and back) is a base frame fixed to the floor, and each of these has a lower rail 15.
(2 pieces on the front and back) are fixed. Upper rails 16 (two on the front and rear) are slidably mounted on the lower rails 15, respectively. Two arms are fixed to one of the upper rails 16, two arms are fixed to the other upper rail 16, and one threaded rod is fixed to the arm fixed to one of the rails 16. Another threaded rod is held fixed to an arm fixed to another of the rails 16.

Two nut units, each of which is fixed to the base frame, are screwed into these two threaded rods. The nut unit has two nuts each having a threaded hole formed therein to be threaded into the threaded rod and having teeth cut on the outer periphery, and two worm gears threaded into each of these nuts,
These worm gears are connected by a flexible shaft.

In the nut unit 8, a single gear is fixed to the shaft of the worm gear, and a bevel toothed gear fixed to the shaft of the motor M1 meshes with it. These nut units are each fixed to the base frame 14, so when the motor M1 is energized to rotate, the inner sleeve of the flexible shaft rotates, the worm gear rotates, and the two nuts that mesh with them rotate. Two threaded rods are fed out from two nut units. Since the two threaded rods are fixed to the two upper rails 16 via the aforementioned arms (four pieces), the upper rails 16 move. That is, when the motor M1 is energized in the forward and reverse directions, the earth rail 16 slides against the lower rail 15 and moves forward and backward.

The seat height sub-section mechanism 30 () is a nut unit having the same definition as the above-mentioned nut unit) 310. Motor M3.
Rod 33 integrally fixed to swing arms 320, 320
Link arm 340 fixed integrally to 0.330. and a base arm 350 which is pivotally connected to the link arm 340 and to which a seat base (not shown) is fixed.

When the motor M3 is driven in the forward and reverse directions, the nut unit 310
moves back and forth along the threaded rod, thereby causing the rod 880 and the link arm 340 to rotate clockwise and counterclockwise, and the base arm 350 to move up and down.

The seatback tilting mechanism 200 is roughly similar to the seat forward/reverse drive mechanism 100 described above, and is composed of a nut unit and a motor M2.
The seed pack 12 is rotated clockwise and counterclockwise.

In the seat back 12, as shown in FIGS. 3C and 3a, the force of the torsion spring 12a is adjusted by a seat pack cushion changing mechanism 400. That is, a nut unit 410 is screwed onto a threaded rod 184 fixed to the seat pack frame 12bK, and an inclined cam plate 411 fixed to this nut unit
One end of a torsion spring 12a is connected to the inclined surface of the torsion spring 12a. By driving the motor M4 in the forward and reverse directions, the nut unit 410 is moved to the earthwork, and the lumbar plate 12C connected to the other end of the torsion spring 12a is moved.
advances and retreats.

Rod supporting headrest HR 50f 1+ 501. A base plate 50 supporting the height adjustment mechanism 500 is provided at the lower end of the
A nut unit 503 and a motor M5 are fixed to this base plate 502. The nut unit 503 is screwed onto a threaded rod 504 fixed to the seat back frame, and is connected to a motor M5.
The nut unit 503 moves up and down by forward and reverse rotation, and the rod 501
．． , 5012 move up and down.

Headless) HR & supporting rod 501. ,501. (Headless) HR can move freely in the forward and backward directions (Headless)
The HR is equipped with a nut unit and screw rod similar to those described above, and the headless HR is moved forward and backward by forward and reverse rotation of the motor M6.

Note that rotary encoders 81 to S6 are coupled to each of the motors M1 to M6.

FIG. 4 shows the electrical components installed on the seat 10.

In Fig. 4, reference numeral 13 is a manual operation board, which includes a decoder driver for energizing six up instruction switches, a vehicle speed zero detection signal amplification circuit, a door opening/closing detection signal amplifying circuit, and an ignition switch opening/closing detection. Signal amplification circuit, input/output port I10. Microprocessor CPUI
, ROMI and RAM2, and transmitting/receiving transistors. Microprocessor CPUI
The main control operations are reading the changes in the open/close states of the various switches mentioned above, sending the changed switch code and status code to the CPU 2 when the change occurs, and
The switch display activation (display) when the switches 5WNI to N3 are closed and the status display activation (display) in response to the status display instruction from the CPU 2, and the programs that perform these operations are the CPUI and ROMI.
is stored in.

The part surrounded by the two-dot chain line KOCU in FIG.
2. RAM2. and microprocessor CPU3. ROM3. The main components are RAM3 and non-volatile NRAM. DC voltage vd is EOC
Even if it is added to U, the external switches 8WIn, 8W1.
SW2°~8W2. When both are open,
One transistor, Tr2 is off, so T
r3 is also off and the constant voltage circuit CPS is not energized;
No energizing voltage is applied to CPU2.3, ROM2.3 and RAM2.3K. However, since the battery backup electronic BBU is always supplied with voltage from the on-board power battery system through a separate system, the NRAM memory is always maintained. The CPU of the operation board 13 turns on the transistor Tr4 and turns on the phototransistor T of the EOCU.
5 is turned on, or external switch 8WIn,
SWl, SW2. ~SW2. When either of the transistors is closed, the base of one transistor becomes the ground level, so sTrl is turned on, which causes Tr2 to turn on.
is turned on, Tr3 is turned on, and the constant voltage circuit cps applies a predetermined voltage to each internal pressure element in the EOCU.

As a result, CPU2 and CPU3 operate respectively,
A high level I' IJ is output to each OR gate OR1 to turn on the transistor Tr6. T16
Turning on connects the base of Trl to ground, so Tr3 is held on. When the CPU 2'J6 and the CPU 3 complete their predetermined operations, they reset the "1" output to the OR gate ORI. Therefore, the El:OCU is activated when a predetermined instruction is received, and after the CPU2 and CPU3 perform predetermined operations, the illumination of the EOCU is automatically shut off.

The operating programs of the microprocessors CPH1 and CPU3 include a timing program that outputs pulses of a predetermined period and a predetermined pulse width from the I10 boat to the microcomputer monitoring circuits ERDI and ERD2 when the microprocessors CPH1 and CPU3 are operating normally. Microcomputer monitoring circuit ER
DI and E RD 2 output a signal indicating an abnormality when the period and/or pulse width of the input pulse becomes larger than a predetermined value. Such microprocessor abnormality detection methods and monitoring circuits are known, and in conventional microprocessor abnormality protection, a microprocessor in which an abnormality has occurred is shut down, initialized, or reset. However, in this embodiment, if any of the microprocessors goes out of control, the microcomputer monitoring circuits REDI and li! The output of RD2 is applied to a negative logic OR gate 0R2 (NAND gate) to turn on the transistor T'ry and reset both CPU2 and CPU3. Therefore, if one of the CPU2 and CPU3 goes out of control, both the CPU2 and the CPU3 are reset and all input/output ports 10 are initialized.

The external switch 5WIn instructs the setting of all mechanisms 100 to 600 to one limit position, and in this embodiment, the closing of 5WIn is the normal rotation of the motors M1 to M6 and the IJ in the normal rotation direction. Instructs to clear the current position register mQ after stopping the limit position and stopping the limit position. The seat 10 moves forward due to the forward rotation of the motor M1, and the forward rotation of the motor M2
The forward rotation of motor M3 causes the seat pack to tilt forward, the forward rotation of motor M3 lowers the seat back, and the normal rotation of motor M4 releases spring 1.
The sympathizer suppressing force of 2a decreases, the headless (HR) falls when the motor M5 rotates forward, and the headless (HR) moves backward when the motor M6 rotates forward. In addition, switch MID''-M6D
Closing of the switches MIU to M6U instructs the motors M1 to M6 to rotate in the normal direction, and closing of the switches MIU to M6U instructs the motors M1 to M6 to rotate in the reverse direction, respectively. While applying rotation to each of the motors M1 to M6, the CPU 3 monitors the output pulses of the rotary encoders 81 to S6 connected to each motor, and when the pulse period of the rotary encoder exceeds a predetermined value, the CPU 3 detects a motor overload (limit position). The motor is stopped in the event that the seat is reached, the seat is stuck, or there is an abnormality in each mechanism. 5WIn consists of an open/close switch PSC,
As shown in Figure 1, it is attached to the side cover and is always protected with a lid that cannot be opened easily. This switch PSC, that is, 5WIn, is closed by a person who knows the purpose of this switch 5WIn when the vehicle is taken out of the factory or when the vehicle is delivered to a store.

At this time, the point at which each mechanism stops is the limit position KA, and the current position register mO(
The contents of all position data 641) from 100 to 600 are cleared to zero. Note that the current position register mQ is allocated to NRAM, and its contents are as follows:
It does not disappear even if the constant voltage circuit CPS is deenergized.

The printed circuit board with the electronic control unit (EOCU) is housed in a steel case 8CA4Cf. This steel case includes four mild steel strips (hot-rolled steel strips cut into strips) F8B, as clearly shown in Figures 5a and 5b.
1 to FS B4 are fixed by welding and their strip F
The free ends of SBI~FSB4 are %3c and 5
As shown in Figure a, it is tied to seat pack springs BS1 and 882. As a result, ■ child f
Steel case 5C that stores lilJ Misogashi EOCU
AH, back plate of seat back 12 and spring BS1.8
It is between 82 and 82.

As described later, the external switch 8W2. ~8W2. is attached to the seat back, and as mentioned above, the motor M
4 to M6 are fixed or supported by the seat back, so by attaching them to the seat back 12 in a steel case as described above, the arrangement between the electronic control unit * EOCU and the seat base 11 is extremely reduced, and the seat The difficulty of wiring due to the relative tilting of the seat back 12 with respect to the base 11 has been greatly improved. In addition, all the electrical elements shown in Fig. 4 are installed on the seat 10, and there are very few wirings connecting the vehicle body/side and the seat 10, and the seat 10 is equipped with all functional elements. is becoming easier.

Figure 6a shows the pushbuttons shown in Figures 1 and 'IR2.
An enlarged plane of the rotary switch PR is shown in Fig. 6b.
FIG. 6C shows a cross section of the plane from which . Two openings 21 and 22 are opened at the bottom of the lid 21.
, the switch SW fixed to the housing base 23
2. A bottle 24 protrudes and a base 23 is inserted into the opening 22.
A bottle 25 fixed to is protruding. A center shaft 26 protruding from the base 23 passes through the hole VC at the center of the lid 210, and a ring 27 bites into the center shaft 26 to prevent the lid 20 from coming off. Inside the lid 20 are two switches 8W2□, SW2. Although not shown, their leads are drawn out through the opening 21 and the base 23. There are two bottles 2 at the bottom of the lid 20.
8.29 is set up and the bottle is 211! A tension coil spring 32 is fixed to and 28. Although the spring 32 applies a clockwise force [41] to the lid 20, the lid 20 is prevented from rotating clockwise at the position where the edge of the opening 22 hits the bottle 25. The switch operation cap 81 is connected to the housing 20 in a state where the compression coil spring 80 is compressed. With the above configuration, by turning the lid 20 counterclockwise, the switch SW2g is
(switch 82) is closed, and by pressing the switch operation gap 81, the switch 8W2. .

swzt (the first set of switches) is closed.

Switch sw2. ．． 2. The close of SW2m instructs to set the walk-in posture, and the open position of SW2m instructs the set of the seated posture. Eight legs having arrowhead-shaped tips are integrally formed on the housing base 28 of the switch PR.
As shown in the figure, by pressing the seat skin 88 on the side surface of the seat back 12 on the door side with the base z8 and inserting the legs into the rectangular holes of the seat frame 84, the switch P is activated.
R is fixed to the seat back 12.

FIG. 7a shows a longitudinal section of the pushbutton switch PS shown in FIGS. 1 and 2. Knowsing Base 40
A first and second set of switches SWl are arranged in the center of the switch SWl, and this switch SWI is closed when the operation cap 41 is pressed.

Figure 8a shows the external appearance of the passenger seat seat 10-As.

Push button/rotating switch PR on the side of the passenger door side
-ASI has almost the same structure as the above-mentioned PR, in which the cap is fixed and a clockwise rotational force is applied to the lid 20, and the counterclockwise rotation of the lid 20 closes the switch 5w3s.
Different from R. The passenger seat 1O-As has a seat on the driver's side so that the driver next to it can also set its posture.
PR and all (switches PR-As2Q with the same configuration are installed, and these switches are connected in parallel so as to respond to any switch operation, as shown in Figure 8d.The other configurations are completely connected to the driver seat. 10, only the driver seat 10 will be described below.

First, I will explain the operation and implementation of the CPUI. Human operation board 1
The microprocessor CPUI of 3 is connected to the 161 key switch SW-MIU from M6IJ1MID to M6. ,Nl
to N3 and 8K17) - monitors the opening and closing of the vehicle speed zero detection circuit, door switch opening/closing detection circuit, and ignition switch opening/closing detection circuit, and if a state change occurs in one, the code of the switch or circuit that caused the state change. A transmission data frame is constructed by creating a code indicating the status and an error detection bit thereof, and the transistor T
Turn on r4. When this transistor Tr4 is turned on, the electronic control unit @ EOCU's no-odd transistor Trδ is turned on, and in EOCU, the base of the transistor Trl is grounded through the transistor Tr, and Trl,
T'r2jci and Tr3 are turned on, the constant pressure start-up circuit CPS is energized, and the power is turned on to the EOCU. Then C
The PUI serially sends the data bits of the transmission data frame to the transistor Tr4, and the input/output capacitor (Ilo) connected to the OCPH1 receives the data from the CPU2.
The CPH1 adds data such as an abnormality display to the base of the transistor T'ra, and the CPUI receives this and sets the display of praise to one digit and seven segments. As mentioned above, the CPUI has the key switch and detection circuit configuration 2-
'3 Monitors state changes, sends state change data, receives data from In0CU, and controls display.

Also, when the seated person key switch SWN 1 is closed, E
One number is displayed until a predetermined operation end signal (display reset) signal arrives from the OCU, and 5WN2 is activated.
When 5WN3 is closed, the number 2 is displayed, and when 5WN3 is closed, the number 3 is displayed and activated.

Next, the operation of CPH1 will be explained with reference to FIG.

As mentioned above, when VC and CPUI turn on transistor Tr4, and switches 8WIn, 8W1,
8W2, ~SW2. The transistors Trt, Tra and T'rs are turned on when any one of them is closed,
There is someone powering the EOCU. When the power is turned on, the CPU 2 first performs initialization as shown in FIG.
Set the base of transistor Trl to ground connection (
power self-holding on). Then, initialize the RAM (clear register), set a 10-second timer (program timer), and receive serial data from the CPUI. In this case, if the regular price data does not arrive by the timeout of the 10 second timer, the self-holding output I'll to the OR gate OR1 is reset (power self-holding output is turned off) after the timeout. When data arrives, it sets a 10 second timer yr + x and receives the CPUI transmission data. Then send the received data to CPH1.
It is set on the bit data line, interrupts the CPU 3, and sends the data to the CPU 3. Note that timing program data for giving fixed-cycle pulses to the microcomputer monitoring circuit [ERDI] is inserted into the receiving operation program of CF'U2, and while the CPU 2 is performing the intended operation, the pulses of the required cycle are delivered. Given to ERDI. When the CPU2 goes out of control, the period of the pulse becomes longer, and the ERDI signal is applied to the transistor Tr7.
Both CPU2 and CPU3 are reset as Keon. By resetting, CPU2 and CPU3 return to "I10 boat initialization" which is the next step after "start".

The interrupt processing operation of the CPU 3 is shown in FIG. 10a. CPU2
When an interrupt occurs, the CPU 3 moves the data currently held in the accumulator register to RAM K, and
Receive data (8-bit parallel) from CPU2,
The data is checked for errors, and if there is no error, the received data is stored in the status register, the data saved in RA and M is returned to the accumulator register, and control 1i141VC'4M is returned based on this data. When there is an error, an error signal is sent to the transistor T'rs. When the CPUI receives this error signal, it creates data again and sends it to the CPU2.

As mentioned above, the CPU transmits data indicating a change in the state of the key switch and state detection circuit of the operation board 13 to the CPU 2 every time the state changes, and each time the CPU 2 receives the data, an interrupt is sent to the CPU 3 to send the data. and send CPU3
stores the data in the status register. Therefore, C
The latest status data is always held in the status register of the PU3, and the CPU 3 uses the contents of the status register as well as the external switch EWI.

SWl, SW2. ~SW2. according to the opening and closing of the first
The seat posture control shown in Figures 0b to 10i is performed.

The seat posture control shown in FIG. 10b to the first old figure will be explained below. First, to explain the main flow shown in FIGS. 10b and 10c, the CPU 3 turns on the transistor Tr by turning on the transistor Tr4 of the CPUI,
My father uses switches SWI, SWI, SW2. When any of the transistors Trl, Tr2 and 1'r3 are turned on by turning on any one of ~2 degrees, the transistors Trl, Tr2 and 1'r3 are turned on and are illuminated. Set "1" to turn on transistor Tr6 and hold it at the base ground of Trl (power self-holding output on).Then, during initialization, the output ports to motors M1 to M6 are set to the stop command level. Although,
Just to be sure, set M6 stop to motor Ml, initialize RAM and set a 10 second timer (program timer). Set it and read whether 5WIn is open or closed, and if it is closed, O
Set "1" again to the output port to RI, reset the 10 second timer (power self-holding output on), and
Proceed to the origin initialization flow shown in Figure 0d. Note that when this mechanism origin initialization flow is completed, a flag (initialized flag) indicating that initialization (origin initialization) has been completed is set in NRAM.

If 5WIn is open, the CPU 3 next checks whether there is an initialized flag, and if it is set, activates the walk-in instruction switch SW1. SW2. ~2. If any of them is closed, power self-holding is turned on (11" naset to OR1 and 10 second timer ladle set), and the process moves to the walk-in control flow shown in FIG. If any of the walk-in instruction switches are open, and if the initialized flag is not set, the status register km is read and the attitude adjustment switch SW-MIU is set.
~Is either M6 or MID-M6D closed?k
When Wf is closed, set the power self-hold and
Proceed to the attitude adjustment flow shown in diagram 0f. If none of the switches are closed, the initialization flag is referenced again in the flow of the jWxoc diagram, and if it is not set,
mlob diagram 1 initial 5WIn on? ” Return to the judgment. When the flag is set, the return to the origin has already been completed, so read from the contents of the status register whether the seat name finger, γ, or any of the key switches 5WNI to N3 are closed. If either is closed, power self-holding is set and the flow moves to the posture setting flow corresponding to the seated person, as shown in Figure 110g. If all of SWN1 to N3 are open, it is read from the contents of the status register whether the memory set key switches 8W to 8K are closed, and if they are closed, the process moves to the attitude memory flow shown in FIG. 10h. 8W-8
When K is open, the driver side door changes state (open→
If there is a change in the state of the door, power self-hold is set and the boarding/exiting position control flow shown in Fig. 101 is executed. Move. If there is no change in the status of the door, read whether the 10 second timer has timed up or not.
If the time is up, the power will be self-maintained) (O
Clear the output to RI to 10'') and return to the step screen in Figure 10b, and if the time has not expired, return to step ◎.

In the main routine explained above, the CPU 3 switches all the switches (SWI) for 10 seconds after the lights are turned on.

8W1. SW2. ~2. ．． SW-MIU~M6
U I M lr)~M6. ．． N1-N3. SK), and if any switch is closed within 10 seconds, the power self-holding is set to tX again and the control operation corresponding to the closed switch is performed.

Next, the origin initialization flow chart shown in FIG. 10d will be explained. In this case, the CPU 3 first refers to the contents of the status register and reads whether the ignition (TG) switch and driver door are open or closed, and if the IQ switch is closed and the driver door is open (it is safe even if the origin initialization is performed). First, set j=1, specify motor M1&, set a program timer for time T1, and energize motor Mj, j=1, for normal rotation. It then waits for the arrival of a pulse from the rotary encoder 8j, j=1, and monitors the time-up of the T1 timer until a pulse arrives. During this time, the motor M1 rotates forward and the seat moves forward. Every time a pulse arrives from sj, the CPU 3 resets the T1 timer. When the seat 10 moves forward and reaches the limit position, the mechanical load increases, the rotational speed of the motor M1 decreases, the period of the output pulse of Sj becomes 'I' I Pi, and the timer T1 times up. When the time is up, CPH1 stops motor Mj, j=i, and this time, as J-2, motor MJ is energized to rotate in the forward direction, and low, 5+lJ-encoder SJ,
The output pulse of j22 is monitored, and similarly, when the cycle becomes T1 or more, the motor MJ is stopped in response to the time-up of the T1 timer, and then the motor MJ is energized to rotate normally by setting "=3".

Similarly below, 1. Then, when the motor is energized and stopped until j==6 and Mi and J-6 are stopped again, the data of the current position register mO assigned to NRAM (Ml~
M6, that is, 6 m data indicating the respective positions of mechanisms 100 to 600) and rear (position O: indicating the origin),
Set an initialized flag in NRAM. As a result, the seat 10 is at its most advanced position, the seat pack 12 is tilted most forward, the lumbar spring is set at its weakest, and the headrest L (R is at its lowest position).
and occupy the most advanced position. This posture is the initial position of the seat, that is, the origin position of the valley 1 mechanisms 100 to 600, and the content (0) of the posture data memo IJmQ indicates this.

Note that the switch SWI instructs this origin initialization.

The switch PSC is attached to a part of the side cover as shown in Figure 1, and is protected at all times with a cover that cannot be opened easily. ) is closed by construction workers or maintenance personnel.

Next, the walk-in control flow shown in FIG. 10e will be explained. In this case, the CPU 3 interposes the opening/closing of the driver door and the zero vehicle speed detection signal based on the contents of the status register, and if the driver door is open and the vehicle speed is zero, this is a walk-in posture instruction, so the CPU 3 registers the target value register. 6 (that is, the origin is specified), and the current position data of register mO is memorized in the original position register m5, and mechanisms 100 and 2 are cleared.
00 origin position and the direction in which the position data of 100 and 200 of mQ become the content (origin) of mO (positive 3 rotation). energize the K motors Ml and M2, and output pulses of the rotary encoders 81 and 82. Motor overload detection by monitoring - T1 time limit timer set for motor stop.

Reset, every time a pulse appears from 81.82, each mO data (100 position and 200 place Vt)
The position data is updated by subtracting and updating, and the closing of other switches is monitored. If motors Ml and M2 become overloaded, they are immediately stopped, and the mO data (100 position and 200 position) is changed to mO. If it matches the data (origin 0), the seat 10 will return to the walk-in position (if the seat 10 returns to the original position) by closing the motor (Ml or M2) of the mechanism (100 or 2 (lO)) indicated by -8 once. I will instruct you, so
The data (1) of the original position register m5 is stored in the target value register m6.
00 position data and 200 position data) are stored in memory, and in the same manner as described above, the motors M1 and M2 are energized in the direction in which the contents of nlQ match the contents of mO, and when they match, the motors are stopped. Note that when the motors M1 to M6 are energized for forward rotation, the output pulses of the rotary encoders 81 to S6 are updated to the remaining value of n count t-1, which is the data of rnO, and the output pulses of the rotary encoders 81 to S6 are When reverse energization is being performed, the output pulses of 81 to S6 are added and counted, and the data of mO is added to the added value. In Figure 1 oe C, m6
．． and (H6, are mm stored in mO, respectively)
1oo and 200 target position data, m O
, and mO□ mean the current position data of J5j14JlflOo and 200 stored in 1110, respectively.

Next, the S force adjustment flow shown in FIG. 10f will be explained.

Switches SW-MIU to M6U are each Tanabata M1
~M6D instructs motor M1 to reverse rotation of M6, and M6D to 8W-MID respectively instructs motor M1 to reverse rotation of M6. MPU3 is SW-
If any of MIU to M6U, j=1 to 6, is closed,
The motor Mj is energized in the reverse direction, and the position data assigned to the tm structure J×100 of mO is added and updated every time a pulse appears from the encoder Sj while detecting a seventh motor overload (timer TI). And when motor Mj is overloaded (
TI time up) or the switch is opened, the motor Mj is stopped. Switch SW-MID~M6D
When either of them is closed, the motor is energized to rotate in the normal direction, and the position data is updated by M.

Next, the posture setting flow corresponding to the seated person shown in FIG. 10g will be explained. The CPU 3 first refers to the contents of the status register, and if the vehicle speed O and IQ switch are closed, the NRA corresponding to the switches 1 to 3 is
Attitude data 6 1 (100 to 60
0) and store them in the memory of the target value register m61, set J-1 to 6ktfj = 1, and start motor energization control from the mechanism 100 (motor Ml) with mo set to m6. j=2. a.

. . . and so on until j=6. In this case as well, the T1 timer is reset every time the rotary encoder Sj generates a pulse, and when the T1 timer times up, it is determined that the motor Mj is overloaded and the motor Mj is stopped. Furthermore, the data mOj of mO is updated every time a pulse appears from the rotary encoder Sj. It is a subtraction when the motor is energized to rotate in the forward direction, and an addition when the motor is energized in the reverse rotation.

Furthermore, if another switch was closed during the execution of this seated person posture setting flow, the posture setting was interrupted, all motors M1 to M6 were stopped, and the walk-in control instruction switch was repeatedly closed twice. Similarly, in the case of motor M1~
Stop M6.

In the seated person posture memory flow shown in Fig. 10h, the CPU 3 first sets a set mode timer (program timer), waits for the number keys N1 to N3 to be closed, and by the time the timer times up, any one of N1 to N3 has been set. If it is not closed, it returns to the main routine. When 8W-Nl is closed, mechanisms 100 to 600 are stored in register m1 of NRAM.
Memory with no current position information (contents of register mQ),
When 5W-N2 is closed, the register m2 of NRAM is
Also, when 8W-N3 is closed, register port 1 of NWAM
3, the current position data is stored in memory.

Finally, the attitude control flow when getting on and off the vehicle shown in FIG. 10L will be explained. The CPU 3 reads the state of the IQ switch with reference to the state register, and if it is open, it is assumed that the driver is getting in or out of the vehicle, and then it reads the opening and closing of the door. If the door is closed, it is assumed that the driver is getting on the vehicle and the attitude data of the original position register m5 is stored in the target value register m6. If the door is open, it is assumed that the driver is getting off the vehicle and the current position register is stored. The sum of the position data of mO and the seat retraction type C8 is stored in the target value register m6. Note that this seat retractable type C6 is only a retractable seat type (retractable type of the mechanism 100). And machine #14100
Only the motor M1 is biased (b) in the direction where mO becomes m6, and when mQ - Hl becomes 5, the motor M1 is stopped. In this flow as well, when the switch is operated, 11 motors are stopped, and when the walk-in instruction switch is repeatedly closed in step 2 (b), the motor Mll is stopped, and also when the motor is overloaded.

Furthermore, every time the encoder 81 generates a pulse, the position data Y1 of the machine 14100 is incremented (in reverse rotation) or decremented by 1 (in forward rotation) in mQ.

The above (=1= in the program to perform the control operation of the CPU 3 as explained above) also incorporates a timing program that gives pulses of a predetermined period to the microcomputer monitoring circuit ERD2. Then, the microcomputer monitoring circuit ERD2 becomes the OR gate OR2.
The transistor Trt'r is turned on through the transistor Trt'r, and the microprocessors CPU2 and CPU3 are simultaneously reset.

With the above configuration and microprocessor control, the sheet 10 has the following effects.

(1) Operation board 130 microprocessor CPU
1 is switch SW-Mll)-M6D, MIU-
In response to changes in the opening/closing of M6U, Nl-N3 and 8W-8K, the output of the vehicle speed detection Ll'il path, the output of the IG switch opening/closing detection circuit and the door opening/closing detection circuit, the state data is sent to the electronic control unit EOCU. and external switches 8WIn, 8W1 and 8W2.
11 to IC0CU when any of ~2s is closed.
When a command is given, the CPUI and CPU2 automatically maintain the power supply, and when the predetermined control operation is completed, the self-maintenance of the power supply is released. Therefore, standby power consumption in the EOCU is low. However, the position data and other necessary data (posture data, original position data, and current position data of the collection of residents 1 to 3, as well as the initialized flag and door open/close flag) are retained in NRAM, and the posture data and control status are Always retained.

(2) When the switch 5WIn is closed, the attitude setting mechanism 1
00 to 600 are each positioned at one origin position 1i1 (limit position), and at that time the current position register mO
The content of is taken as the origin indication data (0). Thereafter, the position count is subtracted or added by forward/reverse rotation of the motor, rotary encoder pulses are counted, and this count value is held in the register mQ as the current position & (position data). Therefore, there is no need for a limit switch.
Not equipped. In addition, arrival at the Jg position and motor overload are determined by setting the T1 timer every time a rotary encoder pulse is generated and determining whether or not the T1 timer has exceeded the T1 timer. Overload energization is prevented.

(8) Manual adjustment key switch SW-MI U-M6U,
MII)” When each 6D is closed, the motor M
l-M6 are individually urged to rotate in reverse or forward direction. 5W-8K
When one of 5WNl to NB is closed, the current position data of each mechanism 100 to 600 at that time is NRA.
Written to M. 5W without operating 5W-8K
When one of NI to N8 is closed, the previously memorized position data is read from the NRAM and each mechanism is set to that position. Therefore, the driver is 8 W-MIUNM
(3U.

Set the posture suitable for you with MID~M6D and %5W-
8K and 5WN1~NB data NRAM
After storing the information in memory, you can obtain a posture suitable for you by simply closing X8WN1 to N8.

(4) By pressing the switches pR, PS (Fig. m1 and Fig. 2), the switches SWI, 8W2 or swA are closed, and the first seat 10 is placed in the walk-in position (seat forward, seat back tilted forward). When the switch PR is turned in the counterclockwise direction (Fig. 1), the switch 8 W 2
g is closed, and the seat assumes the posture before starting the walk-in posture setting (original posture).

When loading a person into the rear seat, the driver must first get out of the vehicle, press the switch PR or PS to set the seat 10 to the walk-in position, and confirm that the person is seated in the rear seat.fl)tF
i, then turn the heir of switch PR counterclockwise (Figure 1)
If you turn it to C) 10 will return to its original position. To emergency stop the return to the original position, press PR or PS twice.

Alternatively, any switch on the operation board may be closed.

(5) When the IQ switch is opened and the door is opened from closed, the seat 10 is moved backward by C8 to make it easier for the driver to get out of the vehicle. When the door changes from opening to closing, it is assumed that the driver is seated, and the vehicle moves forward by 00 minutes, and C) 10 returns to its original position.

(6) cpti2. If any of the CPU8 goes out of control, both CPU2 and CPU8 are reset and I10
Returns to initialization, all motors are stopped, control is resumed from reading the new status, and CPU2. Synchronization of the CPU 8 and safety maintenance are performed.

(7) Electronic control bag # that controls the biasing of the attitude setting mechanism
The go'cU is housed in the seat back, which reduces the amount of electrical wiring that passes through the movable part (bending part), and also reduces the number of wiring between the seat and the vehicle frame. The seat 10 itself can operate independently. The seat 10 is easily attached to the axle, and adjusting the seat on the vehicle is not a problem.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the external appearance of an embodiment of the present invention, and FIG. 2 is a side view showing a walk-in position (dotted line) and a seated position (solid line). 3a is a side view of the seat 10 shown in FIG. 1 with the cover removed 17, FIG. 3b is a plan view of the seat base 1, and FIG. 3C is a side view of the seat 10 shown in FIG.
2, as seen from the handle side. FIG. 4 is a block diagram showing a set of electrical elements 4l-tt of the seat 10, and FIG. 5a is an electronic control 1lI41 shown in FIG.
Front view of case 8CA containing device EOCU, M5b
The figure is a side view. Fig. 6a is a front view of the switch PR, Fig. 6b is a front view with the cap 31 removed, Fig. 6C is a central sectional view, and Fig. 6d is a front view of the switch PR.
The figure is a sectional view taken along the direction J, showing the state of attachment to the seat pack 12. 7a19 is a plan view of the switch PS, and FIG. 7b is a longitudinal sectional view thereof. Figure 8a is a perspective view showing a passenger seat according to another embodiment of the present invention, Figure 8b is a front view of the switch PR-As 1, Figure 8C is a front view with the cap removed, and Figure 8d is a front passenger seat. Seat switch PR-ASI, A82 and PS
FIG. 2 is a circuit diagram showing the connection relationship of internal switches of -As. 9 is a flowchart showing the state data transmission/reception control of the microprocessor CPU2 shown in FIG. 4. FIG. M10a is a flowchart showing the receiving side @ by the interrupt processing of the microprocessor CPH1, and FIG. 10b. Figure 10C, Figure 10a, Figure 106, Figure 1lOf,
Figures 10g, 10h, and 10 are flowcharts showing attitude control and data engraving control of the CPU 3 of the microprocessor game 3. 10: Driver seat 11; Seat base 12:
Seat hack 12a: Lumbar support spring 13: Input operation board PR: Push button/rotary switch PS; Push button switch ps
c: Origin instruction switch HR: Headrest 1
4: Base 7 frame 15: Lower rail 16: Earth rail 100: Seat curve backward drive mechanism 200 Nizi-dopack tilting mechanism 300: Seat base tilt jvI mechanism 400 Nizi-dopack cushion changing history mechanism 500: Headrest lifting mechanism 600: Headrest Maero Shin 81! Structure M1-M6: Motor S1-S6
: Rotary encoder EOCU: 'a Child control unit tf Male 88 Xi No. 8 b Tsukasa No. 8 c Fig. 8 24 (29'''' ・2 W32 25\1) No. ] OhV JP-A-1958-75217 (19)

Claims (5)

[Claims] (1) Includes a microprocessor, and adds and counts electric pulses emitted in conjunction with the movement of the on-vehicle positioning control object in the moving direction in 1 to 2. The count value is used for on-vehicle positioning control In an on-vehicle positioning control device that retains position data of an object, the control device monitors the electric pulse while energizing the drive of the object to be controlled, and when the electric pulse exceeds a predetermined period, stops energizing the drive of the object to be controlled. On-vehicle positioning control device that stops and initializes the count value. (2) The electronic control device drives and energizes the controlled object in a predetermined direction in a first state of a specific switch, monitors the electric pulse while driving and energizes the controlled object, and the electronic control device The on-vehicle positioning control device according to claim 1, wherein when f exceeds f, the drive bias of the controlled object is reset and the count value is initialized. (3) The electronic control device monitors electric pulses while energizing the drive of the controlled object, and when the electric pulse exceeds a predetermined period, increases the drive energization of the controlled object by +1 and sets the specific switch to the first state. The on-vehicle positioning control device according to claim 1, wherein the on-vehicle positioning control device initializes the count value when in the second state, and does not initialize the count value when in the second state. (4) Initialization is to set the count value to a value indicating the origin of the controlled object.
Vehicle 1-positioning control device according to item 2) or item (3). (5) The on-vehicle positioning control device according to claim 1, 2, or 3, wherein the initialization is to clear the count value.