JP2007270446A - Door operation control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door operation control device which can solve an abnormal state such as impossibility of opening of a door when compatibility between an actual door location and locational data has been lost, by employing a simple configuration. <P>SOLUTION: According to the door operation control device, if a detection signal from a location sensor section 15 for detecting the location of the door 50 such as a hatchback door or a slide door moving along a chassis of an automobile or the like driven by a driving section 11, is not compatible with the locational data calculated by a location measuring section 14 for measuring the location of the door 50, based on a driving amount of the driving section 11, the location calculating section 14 and the locational data are initialized so as to conform to the detection signal from the location sensor section 15 in response to a recovery signal from a door operation control section 13, and therefore the locational data is made compatible with the location of the door 50. Thus the abnormal state such as impossibility of opening of the door 50, occurring in the process of operation control, can be solved. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a door open / close control device such as a vehicle slide door that opens and closes a hatch back door of an automobile or the like, or a slide door provided on a side surface of a vehicle by a drive unit such as a motor.

  Conventionally, a door opening / closing device that automatically opens and closes a rear door (hatchback door) of a vehicle and a sliding door that can be moved in the front-rear direction are attached to the side of a vehicle body such as an automobile. 2. Description of the Related Art An automatic opening / closing device for a vehicle sliding door that is opened and closed by a drive unit is known.

  This device operates the door opening / closing operator provided near the driver's seat or the door handle, or operates the wireless remote controller from outside the vehicle, and activates the drive unit by the control device installed in the company, The hatchback door and slide door are automatically opened and closed or moved to open and close.

  In these hatchback doors and sliding doors for vehicles, when the door in the fully closed position is driven in the opening direction by the drive unit, the drive unit is activated after the door lock mechanism is automatically released and the door is activated. When the open door is closed, the door is driven in the closing direction to lock the door when the door is moved to the fully closed position. These door opening and closing operations are driven by a drive unit such as a motor, and the door opening and closing operations are controlled based on position data calculated by a position detection device such as a rotation sensor. In the position detection device, the position data of the door used for opening / closing control is based on the output pulse of a pulse generator such as an encoder or Hall IC provided in a drive unit such as a motor or operated in conjunction with the movement of the door. And calculated by the position detection device.

Accordingly, if this position data is miscalculated, the door lock control and the opening / closing operation control will be defective, which may cause damage to the door mechanism and danger to the human body. In the automatic door opening / closing control device described in Patent Document 1, while controlling the driving device and adjusting the pressing strength of the sliding door, the actual closed position of the sliding door and the apparent closed position calculated by the position detecting device Are measured and the measured value is stored and used as subsequent control data.
JP 2001-254567 A

  However, as in the invention described in Patent Document 1, even when the position data of the actual closed position of the door is correctly stored, when an abnormality occurs in the pulse output from the drive unit or noise is picked up, In this case, the data of the position detection device becomes incorrect, and there is a case where the position recognition is shifted between the actual position of the sliding door and the position detection device. In this state, the door opening / closing control unit cannot correctly control the door opening / closing mechanism.

  For example, an automatic opening / closing latch door cannot automatically open the door unless the door is in a closed state or a half-door state. Therefore, even if the actual door is in a closed state or a half-door state, if the position detection device erroneously recognizes that the door is open, the door cannot be opened by the door opening command. If the position data of the position detection device is misrecognized as being larger than the actual position when the door is open halfway, the door will actually be completely closed when the door is closed. Even though it is closed, it recognizes that it is still open.

  It is an object of the present invention to provide a door opening / closing control device capable of solving an abnormal situation such as a door not opening with a simple configuration when consistency between the actual position of the door and position data is lost. To do.

Means and effects for solving the problems

  In order to solve the above-described problem, the door opening / closing control device according to claim 1 is configured to detect a position of a door driven along a vehicle body by a driving unit, and according to a driving amount of the driving unit. A position measuring unit that measures the position of the door; and a door opening / closing control unit that controls the operation of the door based on outputs from the position measuring unit and the position sensor unit, and the door opening / closing control unit includes: When the position data of the position measurement unit and the detection signal of the position sensor unit contradict each other, the position measurement unit and the position data are initialized in accordance with the detection signal of the position sensor unit.

  In this aspect, when the physical position of the door detected by the position detection sensor unit and the calculated position calculated by the position measurement unit differ, the position measurement unit is initialized according to the output of the position detection sensor unit. Turn into. Here, the initialization means to temporarily stop the operation of the position measuring unit and return the position data to a theoretically correct value so as to match the physical position of the door. Accordingly, when the detection signal of the detection sensor unit provided at a specific position such as the closed position or the open position does not match the position data, the position data is initialized to a value that matches the position of the detection sensor unit. It will be. As a result, the pulse count abnormality can be returned to a normal value, and subsequent operations can be controlled normally.

  The door opening / closing control device according to claim 2 is configured to close from the position sensor unit when the door opening / closing control unit recognizes that the sliding door is moving or stopped at the open position based on the position data. When a position detection signal is received, the position measurement unit and position data are initialized to a fully closed position. In this aspect, the position measurement unit and the position data are initialized based on the closed position of the door. Thereby, in particular, it becomes possible to prevent an uncontrollable state such as a door not being opened due to a shift in position data in the opening direction, which occurs due to an instantaneous power interruption.

  The door opening / closing control device according to claim 3, wherein the door opening / closing control unit receives a signal indicating that the position measurement unit is moving when the position sensor unit receives a closed position detection signal. Includes initializing the position measurement unit and the position data to a closed position. As an initialization means, the operation of the position measuring unit is temporarily stopped, and the position data is forcibly set to the position data of the closed position, and the position data is counted as it is based on the signal during the door movement. When counting to the open position is continued, the position data may be temporarily stopped and initialized.

  The door opening / closing control apparatus according to claim 4, wherein the door opening / closing control unit closes the door in the initialization process when the position data of the position measurement unit and the output of the position sensor unit contradict each other. In this case, the latching operation of the closed position latch portion for holding the door in the closed position is not performed. In this mode, the position measurement unit and position data are initialized at the closed position of the door, but the latch operation normally performed when the door moves to the closed position is not performed in this initialization process. Yes. Accordingly, it is possible to prevent the latch portion from being touched by the detection of the mechanical switch while the door is opened due to mischief or the like, and the finger or the like being pinched by the detection of the mechanical switch. Further, in the initialization of the position data by forced correction as described above, the latch is not performed, but the user notices that the position is not latched, and it becomes possible to latch by issuing the door closing command again.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, a sliding door opening / closing control device will be described as an embodiment of the door opening / closing control device of the present invention. FIG. 1 is a configuration diagram schematically showing the configuration of an open / close control device for a vehicle sliding door that is opened and closed by a drive unit 11 such as a motor. In the figure, the sliding door opening / closing control device 10 includes a sliding door 50, a driving unit 11, a driving circuit 12, a door opening / closing control unit 13, a position measuring unit 14, and a transmission mechanism 30. Further, at the position where the slide door 50 is closed, a closed position sensor unit 15 such as a limit switch for detecting that the slide door 50 is in the closed position and a closed position latch unit 16 for maintaining the slide door in the closed position are provided. If necessary, the open position sensor unit 17 such as a limit switch at the fully open position (hereinafter, the closed position sensor unit 15 and the open position sensor unit 17 are collectively referred to as “position sensor unit” unless otherwise required). ) And an open position latch portion 18 that maintains the slide door 50 in the open position.

  The slide door 50 is driven in the left-right direction by a drive unit 11 such as a motor via a transmission mechanism such as a belt 30. The drive unit 11 is provided with an encoder 19 and the like provided on the rotating shaft, and outputs pulses of two phases, A phase φ1 and B phase φ2, which are shifted from the encoder 19 by ¼ cycle. The pulse generator 19 only needs to generate a pulse in synchronization with the movement of the door, and is not necessarily provided on the rotating shaft of the drive unit 11.

  The door opening / closing control unit 13 controls the driving circuit 12 in accordance with the door opening command and the door closing command to control the operation of the driving unit 11, thereby opening and closing the sliding door 50, and the latch units 16 and 18 and the lock mechanism ( (Not shown) and the like are controlled. The door opening / closing control unit 13 opens / closes the slide door 50, activates / releases the latch, activates / releases the lock, etc. based on the position data from the position measuring unit 14, the data from the closed position sensor unit 15, the open position sensor 17, and the like. Control.

  When the drive unit 11 is driven, as shown in FIG. 1, the A phase φ1 and the B phase φ2, which are pulse waves whose phases are shifted by 90 degrees, are output from the encoder 19. The position measuring unit 14 recognizes the position of the sliding door by counting the rising edge or falling edge of the phase.

  From the mutual relationship between the A phase and the B phase, it is possible to know the rotational direction of the driving unit, that is, the moving direction of the sliding door. For example, as shown in FIG. 1, when the rising edge and falling edge of the B phase are counted and the count number is used as position data, the A phase is at a high level (hereinafter referred to as “H level”). When the rising edge of the B phase appears and when the falling edge of the B phase appears when the A phase is at the low level (hereinafter referred to as “L level”), it is accumulated every time the B phase edge is detected. If the B phase rises when the A phase is at the L level and conversely the B phase falls when the A phase is at the H level, the cumulative count number is incremented every time the B phase edge is detected. 1 (decrement). In this way, the position measurement unit generates a cumulative count number while counting (incrementing or decrementing) the number of pulses. The accumulated count number can be used as the position data of the sliding door by being associated with the actual position of the sliding door.

  For example, the slide door is set to the closed position with a count number “0”, and the count number increases each time the door is opened. When the count number is 10000, the fully open position is obtained. Conversely, when the door is closed from the fully open position, the cumulative count is decremented when moving in the closing direction from the count 10000, and becomes 0 when the slide door is closed.

  However, for example, when an instantaneous power interruption occurs, an error may occur in the encoder pulse count. This will be described with reference to FIGS. FIG. 3 shows an immunity waveform used for the power supply interruption test, and an inductive load interruption test was performed by applying such an immunity waveform. The test result will be described with reference to FIG. FIG. 4 is a diagram for explaining a condition in which the pulse count has changed due to the instantaneous power interruption as a result of the immunity test of the instantaneous power interruption. In the following description, the description will be made on the assumption that +1 count is performed at the rising edge of the B phase and the falling edge of the B phase.

  As shown in state 1 of FIG. 4, when the power supply voltage fluctuates when both the encode pulse A phase and the B phase are at the H level, both the A phase waveform and the B phase waveform are in the same phase according to the fluctuation of the power supply voltage. Therefore, every time a trigger occurs in the B phase (falling edge, rising edge), the count is incremented by +1. The +1 count at the falling edge of the B phase occurs about 20 to 30 milliseconds after the voltage drop.

  Further, in the instantaneous interruption when the A phase is L level and the B phase is H level, the A phase remains at the L level, so that +1 is counted at the fall of the B phase and -1 at the rise of the B phase. As a result, it becomes plus or minus 0, and no count abnormality occurs. When the B phase is at the L level, even if a power interruption occurs, the B phase does not change. Therefore, no count abnormality occurs because the count is not performed regardless of the state of the A phase.

  As a result of the instantaneous interruption test, it was found that the count abnormality occurred in the case of the state 1. Count error in state 1 (instantaneous interruption when A phase and B phase are at H level) advances the position data +2 from the actual position in one instantaneous interruption, so the counted position data is the actual slide position The value is shifted in a more open direction. Accordingly, the door opening / closing control unit 13 may actually recognize that the sliding door 50 is open based on the erroneous position data from the position measuring unit 14 even though the door is actually closed or half door. Come. In this case, even if a door opening command is issued, the door cannot be opened.

  Therefore, in the present invention, when such a pulse count abnormality is found, the door opening / closing control unit 13 forcibly corrects the pulse count value (position data) of the position measurement unit to a correct value. That is, when the closed position sensor unit 15 provided at the closed position of the slide door 50 detects that the slide door is closed, the position data of the position measuring unit 14 is a predetermined position indicating a predetermined closed position. If the current position data is not within the range, it is assumed that an error has occurred in the current position data, and the data of the position measurement unit is forcibly reset to the closed position data.

  This will be described with reference to FIG. FIG. 2 is a functional block diagram showing an embodiment of the door opening / closing control unit 13 of the present invention. The door opening / closing control unit 13 manages and controls the entire opening / closing control operation, a position data storage unit 21 for storing position data received from one measuring unit 14, and a detection signal from the position sensor unit 15 or 17. A determination unit 22 that compares position data and determines whether or not a position data error has occurred, and a recovery process that outputs a recovery signal (initialization signal) when there is an abnormality based on the determination result by the determination unit 22 The unit 23 is provided. In addition, the door opening / closing control unit 13 includes a drive control unit 26 that controls the drive circuit 12, a latch control unit 25 that controls the position latch units 16 and 18, a lock control unit 24 that controls the lock mechanism, and the like.

  The position data calculated from the pulse count by the position measurement unit 14 is stored in the position data storage unit 21 and sent to the main control unit. For example, when the main control unit 20 receives a door opening command in an unlocked state, first, the latch control unit 25 operates the latch unit to release the latch of the slide door. Next, the drive control unit 26 controls the drive circuit 26 to drive the drive unit 11 in the door opening direction. Thereby, the slide door 50 moves to the door opening.

  A two-phase pulse is output from the encoder 19 to the position measuring unit 14 by the operation of the driving unit 11. The position measurement unit 14 performs pulse counting based on the two-phase pulse, and transmits the pulse count value as position data to the door opening / closing control unit. The position data is stored in the position data storage unit 21 and is output to the main control unit 20 and the determination unit 22. The main control unit 20 controls the drive control unit 26, the latch control unit, the lock control unit 24, and the like based on the position data. When the main controller 20 determines from the position data and the output of the closed position sensor 15 that the slide door 50 is fully closed, the latch controller controls the closed position latch 16 to close the slide door. Hold on. If there is a lock command, the lock mechanism is operated via the lock control unit 23.

  The determination unit 22 monitors the storage data in the position data storage unit 21 and the output from the position sensor unit 15. For example, although the position data does not indicate the closed position, the door detection from the closed position sensor unit 15 is detected. When the signal (closed position signal) is received, it is considered that an abnormality has occurred in the position data, and the position abnormality signal is output to the main control unit 20 and the recovery processing unit 23. When receiving the position abnormality signal, the recovery processing unit 23 outputs a recovery signal to the position measuring unit 14 according to the control of the main control unit 20. When the position measurement unit 14 receives the recovery signal, the position measurement unit 14 forcibly corrects (initializes) the count value (position data) to the value of the closed position, and the position data storage unit of the door opening / closing control unit 13 To 21.

  The determination unit 22 can store various abnormal patterns. For example, in addition to the above case, when the content of the position data storage unit 21 changes (while the door is moving) even though the closed position sensor unit 15 detects the closed position, it is determined that there is an abnormality. Furthermore, an abnormal combination of the open position sensor unit 17 and position data can be set as an abnormal pattern. In the open position, if the open position sensor unit 17 determines that there is an abnormality, the position data can be initialized to the open position.

  If the position measurement unit 14 corrects the position data (initial setting) while the pulse count is being counted (if it is erroneously recognized that the door is moving), the pulse count is stopped for a certain period and the pulse count value is closed. A configuration in which the position is forcibly corrected, or a configuration in which the count is stopped after the pulse count value at the closed position is counted if the pulse count is being performed in the closed position direction can be appropriately employed.

  When the sliding door moves to the closed position under normal conditions, the sliding door is latched by the closed position latch unit. However, if the position data is forcibly corrected to the closed position, the latch unit may not be operated. desirable. By doing so, it is possible to prevent the finger from being caught by touching the latch portion when the slide door is opened due to mischief or the like, and the latch is driven by the detection of the mechanical switch. As described above, in the initialization of the position data by the forced correction, the latch is not performed, but the user notices that the position is not latched, and it is possible to latch by issuing the door closing command again.

  In the above description, the slide door is used as an embodiment of the present invention, but the same applies to a hatchback door. In the case of a sliding door, the door is opened and closed by sliding in the horizontal direction, whereas in the case of a hatchback door, the only difference is that it opens and closes in the vertical direction. It is the same.

  Moreover, in the above-mentioned embodiment, although the position sensor part and the latch part are shown as separate bodies, the position sensor part and the latch part can also be made into an integral structure. From the viewpoint of reducing the number of parts, an integral structure is preferable.

  As described above, according to the present invention, even if the door position is erroneously recognized due to an instantaneous power interruption, the door cannot be opened by returning the position data to the initial value according to the output of the position sensor unit. It is possible to prevent the latch from becoming impossible.

It is a block diagram which shows typically the structure of the opening / closing control apparatus of the sliding door for vehicles which opens and closes by drive parts, such as a motor. It is a functional block diagram which shows one Embodiment of the door opening / closing control part 13 of this invention. It is a figure which shows the immunity waveform used for the power supply interruption test. It is a figure explaining the conditions where a pulse count changes by power supply interruption as a result of the immunity test of power supply interruption.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Sliding door opening / closing control apparatus 11 Drive part 12 Drive circuit 13 Door opening / closing control part 14 Position measurement part 15 Closed position sensor part 16 Closed position latch part 17 Open position sensor part 20 Main control part 21 Position data storage part 22 Judgment part 23 Recovery Processing unit 24 Lock control unit 25 Latch control unit 26 Drive control unit

Claims (4)

From a position sensor unit that detects the position of the door that is driven to open and close by the drive unit, a position measurement unit that measures the position of the door according to the drive amount of the drive unit, the position measurement unit, and the position sensor unit A door opening and closing control unit for controlling the operation of the door based on the output of
When the position data of the position measurement unit and the detection signal of the position sensor unit contradict each other, the door opening / closing control unit initializes the position measurement unit and the position data in accordance with the detection signal of the position sensor unit. A door opening and closing control device characterized by that.   The door opening / closing control unit receives a closed position detection signal from the position sensor unit when the position measuring unit recognizes that the door is moving or stopped at the open position based on the position data. The door opening / closing control apparatus according to claim 1, wherein the position measurement unit and the position data are initialized to a closed position.   The door opening / closing control unit receives the position measurement unit and the position data when the position measurement unit receives a signal indicating that the door is moving while the position sensor unit is receiving a closed position detection signal. The door opening / closing control device according to claim 1, wherein the door opening / closing control device is initialized to a closed position. The door opening / closing control unit holds the door in the closed position when the door is closed in the initialization process when the position data of the position measurement unit and the output of the position sensor unit contradict each other. 4. The door opening / closing control device according to claim 2, wherein the latch operation of the latch portion is not performed.

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