JP3904015B2 - Opening and closing body control device - Google Patents

Description

  The present invention relates to an opening / closing body control device that controls a sliding operation or a tilting operation of an opening / closing body employed in a sliding roof or the like.

  Conventionally, some passenger cars are provided with a sliding roof (hereinafter simply referred to as a “roof”) in order to provide temperature adjustment in the passenger compartment or a feeling of opening during driving. The roof is driven by a motor, and slides between a fully open position and a fully closed position of an opening formed in the roof panel, and further performs a tilt operation that raises the rear end side from the fully closed position.

  Specifically, as shown in FIG. 9, the roof 101 is rotated in one direction from a fully open position of the opening 105 of the roof panel 103 (slide fully open position: FIG. 9A). It slides in the roof panel 103 and moves in a direction to close the opening 105. Then, after the opening is in the fully closed state (FIG. 9B), the tilt-up mode is entered, the rear end 101a is tilted and raised, and the most raised position (tilt fully open position: FIG. 9C). ) (Hereinafter, this operating direction of the roof is referred to as “tilt up direction”). On the other hand, when the motor is rotated in the reverse direction from the fully open position of the tilt, the rear end 101a of the sliding roof 101 is tilted and lowered to a fully closed state (FIGS. 9D and 9E). When rotated in the same direction, the roof 101 slides in the roof panel 103 and is locked in the fully open position (FIG. 9F) (hereinafter, this operating direction of the roof is referred to as “slide open direction”).

  In such roof control, for example, in order to stop the roof in a fully closed state, it is necessary to determine the current roof position. For this reason, conventionally, a limit switch that switches when the roof reaches the fully closed position is provided in the roof control device, and control is performed using this information. However, this limit switch configuration makes the mechanism complicated and expensive, and in recent years, a sensor that outputs a pulse synchronized with the rotation of the motor using a cheaper Hall element is installed, and the roof is fully opened. There has been proposed a method of determining the position of the roof by counting the count value of the pulse with the stop position as a reference position every time the lock is stopped at either the position or the tilt fully open position.

  However, in this technique, since the reference position for counting the pulses is a position where the roof is locked in one of the slide fully open position and the tilt fully open position, the play of the mechanism unit in the path through which the motor output is transmitted to the roof. Due to such mechanical errors as described above, there is a problem that the count value is shifted when the motor is reversely rotated, and appropriate control cannot be performed. In particular, when a motor damper (output shaft cushioning material) made of a resin structure or a roof stopper is subjected to thermal distortion at high temperatures, the mechanical error has a greater effect on the count value. It was manifested.

  Moreover, the above problems are not limited to the sliding roof control, but can be said to be common to opening / closing bodies having similar functions.

  Therefore, the present invention provides an opening / closing body control apparatus capable of accurately controlling the opening / closing body with high accuracy regardless of the movement direction of the opening / closing body or the on / off of an external power source in the control of the opening / closing body such as a sliding roof. The purpose is to provide.

  In view of the above problems, in the opening / closing body control apparatus according to claim 1 of the present application, the forward or reverse rotation of the motor driven to operate the opening / closing body is detected by a sensor, and the pulses output by the sensor are counted. Counts to determine the moving direction and position of the opening / closing body.

  When the opening / closing body moves in the tilt-up direction, the counting means counts pulses with a count value using the first fully countered position as the reference position. That is, the first counter is configured, for example, as a counter that counts down in the tilt up direction and counts up in the slide open direction, and is configured such that the count value becomes 0 at the tilt fully open position. When the opening / closing body moves in the slide opening direction, the second counter is used to count the pulses with a count value with the slide fully open position as a reference position. That is, for example, the second counter is configured as a counter that counts down in the slide open direction and counts up in the tilt up direction, and is configured such that the count value becomes 0 at the slide fully open position. The position determination means determines the position of the opening / closing body with reference to the first counter when the opening / closing body moves in the tilt-up direction, and second when the opening / closing body moves in the slide open direction. The position of the opening / closing body is determined with reference to the counter.

  Specifically, the stroke between the fully open position of the slide and the fully closed position, and the stroke between the fully open position of the tilt and the fully closed position are known in advance in the design, so when the opening / closing body moves these strokes. The number of pulses output from the sensor is calculated in advance. At this time, if the number of pulses output from the sensor before reaching the fully open position from the fully closed position is the “first predetermined value”, the first counter when the opening / closing body moves in the tilt up direction is used. As the count value, “first predetermined value” is stored as the count value at the fully closed position, and “0” is stored as the count value at the tilt fully open position. The position determining means determines that the opening / closing body is in the fully closed position when the first counter displays “first predetermined value”, and the opening / closing body is tilted when the first counter displays “0”. Determined to be in the fully open position. When the opening / closing body is between the fully closed position and the slide fully open position, the first counter takes a value larger than the “first predetermined value”.

  Similarly, if the number of pulses output from the sensor from the fully closed position to the fully open position of the slide is the “second predetermined value”, the count of the second counter when the opening / closing body moves in the slide opening direction. As the values, “second predetermined value” is stored as the count value of the fully closed position, and “0” is stored as the count value of the slide fully open position. The position determination means determines that the opening / closing body is in the fully closed position when the second counter displays “second predetermined value”, and the opening / closing body slides when the second counter displays “0”. Determined to be in the fully open position. When the opening / closing body is between the fully closed position and the tilt fully opened position, the second counter takes a value larger than the “second predetermined value”.

  Thus, in the opening / closing body control apparatus according to the first aspect, the counter for storing the position of the opening / closing body is set separately depending on the operating direction of the opening / closing body, and is referred to by the position determination means when determining the position of the opening / closing body. The counter is also set separately according to this. Furthermore, the reference position of the count value of each counter is also set to the fully open position (end point) in each operation direction. That is, the movement in the same direction is not affected by play or the like of the mechanism portion, and thus setting does not cause a problem such as a deviation in the count value when the operating direction of the opening / closing body is changed. . As a result, accurate opening / closing body control can be performed.

  Preferred embodiments of the present invention will be described below with reference to the drawings. In this embodiment, the opening / closing body control device of the present invention is applied to a sliding roof control device. FIG. 1 is a block diagram illustrating a configuration of a sliding roof control device according to the present embodiment.

  The sliding roof control device 1 shown in FIG. 1 operates the sliding roof (hereinafter also simply referred to as “roof”) in the manner shown in FIG. 9 in the same manner as described in the above prior art, and the roof is tilted up. A switch 11 for inputting an instruction to operate in a direction to be moved (hereinafter referred to as “tilt up direction”), and a switch 12 for inputting an instruction to operate in a direction to slide the roof fully open (hereinafter referred to as “slide open direction”). A control circuit 10 that outputs a motor drive signal to the motor drive circuit 30 in response to the inputs of the switches 11 and 12, a motor 35 that is rotationally driven by the motor drive circuit 30 and moves the roof to a desired position, and a control circuit 10 includes a power supply circuit 40 for supplying stable power to the power supply 10 and the like.

  Although not shown, the control circuit 10 includes a CPU for controlling various devices, a ROM in which various numerical values and programs are written in advance, a RAM in which numerical values and flags of calculation processes are written in a predetermined area, and various digital signals are input and output. Input / output interface (I / O), a timer for measuring a predetermined elapsed time, and a bus line to which these devices are connected. A control program shown in a flowchart described later is written in advance in the ROM. The motor drive circuit 30 is configured by a relay or the like.

  On the vertical plane of the armature shaft of the motor 35, two sensors 51 and 52 each comprising a Hall IC are arranged at positions 90 ° apart from each other when viewed from the shaft center. Each of these sensors 51 and 52 outputs a pulse synchronized with the rotation of the motor 35, and each output pulse is output with a phase difference of 90 °.

  Further, a state storage circuit 20 for storing the fully closed state of the roof is connected to the control circuit 10, and this state storage circuit 20 is constituted by a simple circuit shown in FIG. In other words, the state memory circuit 20 includes a capacitor C that stores 1-bit information by storing charges, a transistor TR for charging or discharging the capacitor C, a diode D, and resistors R1 to R5. Yes. One end of the capacitor C is connected to the collector of the transistor TR via the resistor R5, and the other end of the capacitor C is grounded to the ground line GND. The base of the transistor TR is connected to the port 1 of the control circuit 10 through the resistor R1, and is grounded to the ground line GND through the resistor R4. The emitter of the transistor TR is grounded to the ground line GND. Therefore, a predetermined voltage obtained by dividing the output voltage by the resistor R1 and the resistor R4 when the output from the port 1 becomes “H (High level)” is input to the base of the transistor TR. Thus, the transistor TR is turned on only after this predetermined voltage is input, and the electric charge stored in the capacitor C is discharged. A cathode of a diode D is connected to a connection point between the capacitor C and the resistor R5, and an anode of the diode D is connected to the port 2 through the resistor R2 and is connected to the port through the resistor R3. 3 is connected. For this reason, when the output from the port 2 becomes “H”, current flows into the capacitor C through the resistor 2 and the diode D until the voltage across the capacitor C reaches a predetermined voltage determined by the output voltage from the port 2. Then, the capacitor C is charged, and thereafter, as the charging of the capacitor C approaches completion, the potential of the port 3 approaches the potential of the port 2.

  When the roof is in a fully closed state, the control circuit 10 outputs a signal for setting the port 1 to “L (Low level)” and the port 2 to “H”. Is supplied. This charge is accumulated until the charging of the capacitor C is completed. On the other hand, when the roof is not in the fully closed state, the control circuit 10 outputs a signal for setting the port 1 to “H” and the port 2 to “L”, and the transistor TR is turned on by supplying the voltage from the port 1. The electric charge accumulated in the capacitor C is discharged. Accordingly, the state storage circuit 20 stores that the roof is in the fully closed state when the charging of the capacitor C is completed. In the control process described later, the state of charging of the capacitor C is detected. It is possible to determine whether or not the current roof position is at the fully closed position. The port 3 is a terminal for detecting charging of the capacitor C by its potential.

  Next, a specific method for detecting the current position of the roof in sliding roof control will be described with reference to the conceptual diagram shown in FIG. The current position of the roof is defined in relation to the output pulses of the sensors 51 and 52 that detect the rotation of the motor 35. That is, in the figure, the “sliding section” is a section in which it is detected from the output pulses of the sensors 51 and 52 that the roof is sliding, and the “tilting section” is that the roof is tilting. Is detected from the output pulses of the sensors 51 and 52. In the drawing, an area having a predetermined width is set as the “fully closed section” because an area where only the motor 35 on the mechanism idles due to its inertia even after the roof is fully closed. Therefore, the number of output pulses at this time is taken into consideration. The position where the roof itself is stopped in the fully closed state (fully closed position) is set within this fully closed section.

  The current position of the roof is the position where the roof fully opens the opening (see FIG. 9) provided in the roof panel (point D: hereinafter referred to as “sliding fully open position”), and the roof fully closes the opening. The position is determined with reference to the position (point C: hereinafter referred to as “tilt fully open position”) where the rear end is most raised in the tilt direction from the position to be moved (point E: fully closed position). That is, when the roof is moving in the direction from the fully open position of the slide toward the fully open position of the tilt (tilt up direction), the current position is determined based on the fully open position of the tilt. Is operating in the direction from the fully open position of the tilt toward the fully open position of the slide (slide open direction), the current position is determined based on the fully open position of the slide.

  As described above, the respective reference positions are set separately depending on the operating direction of the roof because play or looseness of the mechanism part that transmits the output of the motor 35 to the roof or torsion of the damper (buffer material of the output shaft) of the motor 35. For example, if the roof operating direction is changed due to the above, a deviation occurs between the output of the motor 35 and the movement distance of the roof, so that an error in the count values in both operating directions due to this deviation is eliminated.

  Since the stroke A between the fully open position of the slide and the fully closed position and the stroke B between the fully open position of the tilt and the fully closed position are known in advance by design, the sensor 51 is rotated by the rotation of the motor 35 for each of these strokes. , 52 is calculated in advance. At this time, the number of pulses output from the sensors 51 and 52 from the fully closed position to the fully open position of the tilt is “first predetermined value”, and the sensors 51 and 52 are required from the fully closed position to the fully open position of the slide. When the number of pulses output from the “second predetermined value” is determined, the position at which the pulse is output from the tilt fully open position is determined as the fully closed position, and the number of pulses from the fully open position of the slide is “first”. The position where “2 predetermined value” is output is determined as the fully closed position.

  The control circuit 10 is provided with a first counter and a second counter that count these pulses output from the sensors 51 and 52. Here, the first counter is used for storing the position of the roof as a count value when the roof moves in the tilt-up direction, and when a pulse indicating that the roof has advanced in the tilt-up direction is output. The count value is counted down (subtracted) according to the number of pulses, cleared at point C (that is, set to 0), and when a pulse indicating that the roof has advanced in the slide open direction is output, it is counted according to the number of pulses. The value is up-counted (added). Therefore, when the first counter displays “first predetermined value”, the roof is in the fully closed position, and when the first counter displays “0”, the roof is in the tilt fully opened position. Become.

  On the other hand, the second counter is used to store the position of the roof as a count value when the roof moves in the slide open direction, and when a pulse indicating that the roof has advanced in the slide open direction is output, The count value is counted down according to the number, cleared at point D (that is, set to 0), and when a pulse indicating that the roof has advanced in the tilt-up direction is output, the count value is counted up according to the number of pulses. To do. Accordingly, the roof is in the fully closed position when the second counter displays “second predetermined value”, and the roof is in the fully open position when the second counter displays “0”. Become.

  Specifically, the pulse count is determined based on the output pulse time chart shown in FIG. In the figure, the horizontal axis represents time t. As described above, the two sensors 51 and 52 respectively output the rectangular pulse A and the pulse B having a phase difference of 90 ° with respect to the rotation of the motor 35. Here, the pulse A is a pulse to be counted, and the pulse B is a pulse for determining the counting direction (roof operating direction) based on the positional relationship with the pulse A.

  Specifically, the pulse is counted by counting the rise and fall of the pulse A shown in FIG. Since the position detection is performed by the Hall IC, the phase difference between the rising edge and the falling edge is 180 ° (1/2 rotation of the motor 35).

  Then, when the rising edge of the pulse A is detected and the level of the pulse B at this time is “H (High)”, and the falling edge of the pulse A is detected, the level of the pulse B at this time is “L ( Low) ”, it is determined that the roof is moving in the tilt-up direction. Conversely, when the rising edge of the pulse A is detected and the level of the pulse B at this time is “L (Low)” and when the falling edge of the pulse A is detected, the level of the pulse B at this time is “H ( In the case of “High)”, it is determined that the roof is moving in the slide open direction. This utilizes the fact that the anteroposterior relationship between pulse A and pulse B is also reversed when the motor 35 is reversed. Therefore, in the example shown in FIG. 4, the roof initially traveled in the tilt-up direction, but the rotation of the motor 35 was reversed at time t1 and proceeded in the slide open direction.

  In the above, in order to increase the resolution at the time of pulse counting, the pulse is counted by counting both at the rising edge and the falling edge of the pulse A. However, either one may be counted. it can. Of course, the relationship between the positional relationship between the pulse A and the pulse B and the operating direction of the roof may be reversed.

  Next, the sliding roof control process executed by the control circuit 10 will be described in detail with reference to the flowcharts shown in FIGS. As shown in FIG. 5, in this control, first, initialization processing shown in FIG. 6 is performed to confirm whether or not the roof is in the fully closed position (S100). This initialization process is performed only once when the power from the power supply circuit 40 is cut off, that is, whenever the power source such as a battery is replaced.

  In this initialization process, first, the control circuit 10 outputs “L” to port 1 and “H” to port 2 (S101). Accordingly, at this time, no voltage is supplied from the port 1 to the transistor TR, and charge is supplied from the port 2 to the capacitor C for a predetermined time. For this reason, the transistor TR remains off, and the charge is not discharged from the capacitor C. Conversely, the charge supplied from the port 2 is accumulated in the capacitor C. This “predetermined time” is set in consideration of the time constant determined by the resistor R2 and the capacitor C, and is sufficiently larger than the time until the capacitor C is charged from the non-charged state. Is set to a short time.

  Then, it is determined whether or not the predetermined time has elapsed (S102). If it is determined that the predetermined time has elapsed (S102: YES), it is determined whether or not the port 3 is “H”. (S103). When the port 3 is “H” (S103: YES), since the output from the port 2 to the port 3 through the resistors R2 and R3 is performed, the capacitor C is already charged. It is judged that it was. That is, in the sliding roof control immediately before the power from the power supply circuit 40 is cut off (immediately before replacing the power source such as the battery), it is determined that the roof is stopped at the fully closed position and is still in the fully closed state. It is. Therefore, in order to store in the RAM information indicating that the state is fully closed while maintaining this state, “L” is output to both port 1 and port 2 (S104). As described in the description of FIG. 3, in order to represent this fully closed state, a “first predetermined value” (a count value between the tilt fully opened position and the fully closed position) preset in the first counter is represented. Similarly, “second predetermined value” (representing a count value between the fully open position of the slide and the fully closed position) set in the second counter is set (S105, S106).

  On the other hand, when it is determined in S103 that the port 3 is not “H” (S103: NO), the charge supplied from the port 2 is still stored in the capacitor C, that is, the capacitor C Is determined to be incompletely charged. That is, it is determined that the power source such as the battery has been replaced while the roof is stopped at a position other than the fully closed position in the previous sliding roof control. At this time, the charge from the port 2 is supplied to the capacitor C to some extent by the processing of S101. Therefore, “H” is output to port 1 and “L” is output to port 2 in order to completely remove the charge in the capacitor C so that the subsequent processing does not cause the false recognition of the fully closed state. Output (S107). At this time, the roof position information stored in the RAM is erased, and the position of the roof cannot be grasped. Therefore, both the first counter and the second counter are cleared as pre-processing of the subsequent processing. (S108, S109).

  When the above initialization process is completed, it is first determined whether or not the switch 11 is turned on (S110). If it is determined that the switch 11 is turned on (S110: YES), in order to operate the roof in the tilt-up direction, “H” is output to port 1 and “L” is output to port 2, respectively. The output of 35 is turned on and rotated to the tilt-up side (S140). Here, the port 1 is set to “H” because the roof does not stay in the fully closed position as long as the roof is operated, and therefore, it is not in the fully closed position by removing the charge stored on the positive electrode side of the capacitor C. That's what it meant. The reason why the port 2 is set to “L” is that charge is not supplied to the capacitor C in order to prevent misidentification of the fully closed position.

  Then, the pulse count process shown in FIG. 7 is performed according to the rotation of the motor 35 (S150). In this pulse counting process, as described in FIG. 4, it is first determined whether or not the rising edge of the pulse A is detected (S401). If this rising edge is detected (S401: YES), It is determined whether the level of the pulse B at that time is “H” (S402). At this time, if it is determined that the level of the pulse B is “H” (S402: YES), this means that the motor 35 has made a half turn to the tilt up side, so the first counter counts down. Then, the second counter counts up. If the rising edge of the pulse A is not detected in S401, it is determined whether or not the falling edge of the pulse A is detected (S403). If this falling edge is detected (S403: YES) At this time, it is determined whether or not the level of the pulse B is “H” (S404). At this time, if it is determined that the level of the pulse B is not “H”, that is, the level of the pulse B is “L” (S404: NO), as described above, this means that the motor 35 is ½ on the tilt-up side. In order to mean that it rotated, the 1st counter counts down (S405) and the 2nd counter counts up (S406). In the above description, when the first counter becomes 0 or less due to the down count (S407: YES), the first counter is cleared (that is, set to 0) (S408).

  As described above, as a case where the first counter is smaller than 0, it is conceivable that when the tilt up is completed, the tilt fully opened position is further shifted to the tilt up side from the previous time. This deviation of the tilt fully open position is considered to occur, for example, when the stopper of the roof is made of resin, and the stopper is softened at high temperature and easily contracts. Or the case where the 1st counter is cleared in S108 of the above-mentioned initialization processing (Drawing 6) etc. can also be considered.

  On the other hand, when the rising edge of the pulse A is detected in S401 (S401: YES), and when the level of the pulse B at this time is determined to be “L” (S402: NO), the falling edge is detected in S403. Is detected (S403: YES), and it is determined that the level of the pulse B at this time is “H” (S404: YES), the motor 35 has made a half turn to the slide open side. Therefore, the second counter counts down (S409), and the first counter counts up (S410). In the above description, when the second counter becomes 0 or less due to the down-count (S411: YES), the second counter is cleared (that is, set to 0) (S412).

  As described above, as a case where the second counter is smaller than 0, it is conceivable that when the slide open is completed, the slide fully open position is further shifted in the slide open direction from the previous time. Or the case where the 2nd counter is cleared in S109 of the above-mentioned initialization processing (Drawing 6) etc. can also be considered.

  Then, when the pulse count process is completed, a count state determination process shown in FIG. 8 is performed (S160). In the count state determination process, if the count values stored in the first counter and the second counter are abnormal, the subsequent sliding roof control is hindered. Therefore, whether these counters are normal is determined. Judgment.

  That is, in the above-described control, when the first counter counts down, the second counter counts up, and conversely when the first counter counts up, the second counter counts down. Therefore, when the sliding roof control device 1 is functioning normally, a value obtained by adding the numerical values stored in the first counter and the numerical values stored in the second counter (that is, the count of all strokes). Value) should be the sum of the first predetermined value and the second predetermined value set in advance at the fully closed position. However, depending on circumstances, there may be a case in which each count value is excessively counted due to noise or the like, or the count value stored in the RAM is corrupted. Further, when the first counter and the second counter are cleared in the processing of S108 and S109 in the initialization processing, the total stroke is not the sum of the first predetermined value and the second predetermined value. For this reason, in the subsequent control, the current position cannot be grasped. Therefore, as a precondition for performing the process of exiting from such a state, it is determined whether or not the count state is normal.

  Specifically, as shown in FIG. 8, first, the count values respectively displayed on the first counter and the second counter are summed to calculate the total stroke (S501). Then, this total stroke is compared with a sum of the first predetermined value and the second predetermined value plus a predetermined value α (hereinafter referred to as “first comparison value”). Then, it is determined whether or not the total stroke is larger than the first comparison value (S502). If it is determined that the total stroke is larger (S502: YES), the first counter and the second counter are assumed to have become count values that cannot be designed. Both counters are cleared (S503, S504). Next, the total stroke is compared with a value obtained by subtracting the predetermined value α from the sum of the first predetermined value and the second predetermined value (hereinafter referred to as “second comparison value”). Then, it is determined whether or not the total stroke is smaller than the second comparison value (S505). If it is determined that the total stroke is smaller (SS505: YES), the count value stored in the RAM is garbled or initialized. It is determined that the first counter and the second counter have been cleared in the processing of S108 and S109 in the processing, and it is determined that the count value is abnormal (S506). On the other hand, if it is determined in S502 and S505 that the entire stroke is within the range between the first comparison value and the second comparison value (S502, S505: YES), the count value is normal. It is determined (S507).

  In the above, the new predetermined value α is introduced in the first comparison value and the second comparison value when the mechanism shift due to secular change, or when the tilt fully open position or slide fully open position is updated. This is to take into account design tolerances such as deviations (those that are in the range of design value errors in advance). Therefore, although the value of the predetermined value α is appropriately set in design, it is assumed to be sufficiently smaller than the first predetermined value or the second predetermined value.

  Then, from the determination result of the count state determination process, it is determined whether or not the count state is abnormal (S170). If it is determined that the count state is abnormal (S170: YES), the roof operation can be normally performed. Until then, continue the roof operation for the time being.

  When the count value is abnormal as described above, if the roof operation is continued and the roof is moved in the tilt-up direction, the value of the first counter becomes 0 at the end (that is, the tilt fully open position). Accordingly, in the subsequent processing, this new tilt fully open position is set as a reference position in the tilt up direction of the roof. At this time, the other second counter does not indicate a value that should be originally indicated (first predetermined value + second predetermined value), but the roof subsequently operates in the slide open direction, and its end (that is, the slide fully open position). ), The value of the second counter becomes zero. Accordingly, in the subsequent processing, this new slide fully open position is set as a reference position in the slide open direction of the roof. At this time, the other first counter indicates a value (first predetermined value + second predetermined value) that should be originally indicated by the above processing, and thereafter, the fully closed position can be accurately grasped. Accurate sliding roof control can be executed.

  On the other hand, when it is determined in S170 that the count state is normal (S170: NO), it is determined whether or not the current count display of the first counter is the first predetermined value (S180). When it is determined that the count display is the first predetermined value (S180: YES), it is confirmed that the current position of the roof is in the fully closed position, so the output of the motor 35 is temporarily turned off. (S190). Then, in order to store the fully closed position in the state storage circuit 20 for the subsequent control, “L” is output to the port 1 and “H” is output to the port 2 to charge the capacitor C (S200). ).

  Here, when the information of the fully closed position is stored in the state storage circuit 20, even if the power supply from the power supply circuit 40 is shut off in this fully closed state, this fully closed state is stored in the next initialization process (FIG. 6). The sliding roof control can be resumed by using the relationship between the count value and the roof position at this time as it is.

  If the display of the first counter is not the first predetermined value in S180, the roof is in a position other than the fully closed position, but since the count value is normal, it is possible to grasp the current position of the roof. Since this is possible, the roof control is continued as it is.

  On the other hand, if it is determined in S110 that the switch 11 is not turned on, it is determined whether or not the switch 12 is turned on (S120). If it is determined that the switch 12 is turned on (S120: YES), the processing of S230 to S300 is performed. The processes from S230 to S300 correspond to the processes from S130 to S200, respectively. That is, in the processes of S130 to S200, the first counter is used as a counter for counting the roof position in the tilt-up direction when the operation direction of the roof is the tilt-up direction, and further represents the fully closed position. A first predetermined value is set as the count value of the counter. On the other hand, in the processing of S230 to S300, the operating direction of the roof is the slide open direction, the second counter is used as a counter for counting the roof position in the slide open direction, and the fully closed position is represented. A second predetermined value is set as the count value of the second counter. Although the two are different in the above points, the other processes are the same, so the description of the processes from S230 to S300 will be omitted.

  On the other hand, if it is determined in S120 that the switch 12 is not turned on, it is determined that both the switch 11 and the switch 12 are turned off, and the output of the roof driving motor 35 is turned off (S330). At this time, even if the output of the motor 35 is turned off, the motor 35 may be moving due to its inertia, so the pulse counting process is performed for the next sliding roof control (S340). In the next sliding roof control, the count value in the pulse count process is stored in the RAM of the control circuit 10 unless the power supply from the power supply circuit 40 is cut off (unless the power supply of the battery or the like is replaced). The current position of the roof can be easily grasped from this count value.

  The sliding roof control is terminated by the series of operations described above. As described above, in the sliding roof control device 1 according to the present embodiment, the counter for storing the position of the roof according to the operating direction of the roof is set separately as the first counter and the second counter, and also when the roof position is determined. Reference is made to a counter which stores the roof position in its operating direction. Further, the reference position of each count value of each of the first counter and the second counter is also set to a tilt fully open position and a slide fully open position (end point in the operation direction), respectively. For this reason, it is possible to effectively prevent the deviation of the count value when the operation direction of the roof is changed due to the play of the mechanism portion or the like, and it is possible to perform the sliding roof control with high accuracy.

  Further, as described above, the sliding roof control apparatus 1 is an apparatus configured to store the count value in the volatile RAM, but even if the power supply from the power supply circuit 40 is interrupted, During this period, a state memory circuit 20 is provided that can temporarily hold the fully closed state. Then, immediately after the power from the power supply circuit 40 is turned on again, this fully closed state information is stored again in the RAM.

  Therefore, when the power is cut off while the roof is stopped at the fully closed position, the fully closed position can be immediately grasped after the power is turned on again, and the sliding roof control is performed with the set value of the counter before the power is cut off. It can be performed. In this case, the initial setting of the counting means, that is, the setting values of the first counter and the second counter for the fully open position of the tilt, the fully open position of the slide, and the fully closed position are largely changed at least until the power is turned off. There is no. In addition, the power is shut off when the battery is replaced. However, since the roof is usually usually in the fully closed state, the tilt fully opened position recognized by the first counter and the second The slide fully open position recognized by the counter is almost always based on a set value at the time of manufacture of the vehicle. For this reason, there are conventional problems such as that the reference position of the counter is changed due to softening of the stopper due to temperature change, loosening of the mechanism, or twisting of the motor damper (buffer material of the output shaft), which hinders control. Very unlikely to occur.

  Further, since the state storage circuit 20 of this embodiment is simply configured by a circuit using circuit elements such as the transistor TR and the diode D as described above, it is not necessary to use an expensive storage element such as an EEPROM. The state of the roof (fully closed state) can be stored, and the cost can be reduced.

  In this embodiment, the control circuit 10 corresponds to a counting unit, a position determination unit, a state detection unit, and a storage unit, and the state storage circuit 20 corresponds to a state storage unit. Of the processes executed by the control circuit 10, the processes of S150, S250 and S340 shown in the flowchart of FIG. 5 correspond to the process as the counting means, and the processes of S180 and S280 correspond to the process as the position determining means. To do. Further, the process of S103 shown in FIG. 6 corresponds to the process as the state detection unit, and the processes of S105 and S106 correspond to the process as the storage unit.

  As mentioned above, although the Example of this invention was described, it cannot be overemphasized that embodiment of this invention can take various forms, as long as it belongs to the technical scope of this invention, without being limited to the said Example at all. Nor. For example, in the above embodiment, when the power is shut off in a state where the roof is stopped at a position other than the fully closed position, the user moves the roof in the tilt-up direction and the slide open direction, Although the reference value of the count value of the two counter is newly updated, the update process in this case may be automatically performed in the initialization process. In this case, after the process of S109 of FIG. 6, the roof is automatically moved in the tilt-up direction and the slide open direction (reciprocated once), and the processes of S130 to S200 and S230 to S300 are automatically performed. Can be considered.

It is a block diagram which shows the structure of the sliding roof control apparatus concerning the Example of this invention. It is explanatory drawing of the state memory circuit concerning an Example. It is explanatory drawing of the sliding roof control method concerning an Example. It is explanatory drawing of the pulse count process concerning an Example. It is a flowchart explaining the sliding roof control concerning an Example. It is a flowchart explaining the initialization process in sliding roof control. It is a flowchart explaining the pulse count process in sliding roof control. It is a flowchart explaining the count state determination process in sliding roof control. It is explanatory drawing of the general operation | movement of a sliding roof.

Explanation of symbols

1 ... sliding roof control device,
10 ... Control circuit 11,12 ... Switch,
20 ... State memory circuit, 30 ... Motor drive circuit,
35 ... motor, 40 ... power supply circuit,
51, 52 ... sensors,
C ... capacitor, D ... diode,
R1 to R5 ... resistor, TR ... transistor

Claims (1)

A tilt fully open position for sliding the opening / closing body between a slide fully open position for fully opening the opening and a fully closed position for closing the opening, and raising the rear end side of the fully closed position and the opening / closing body; A motor that is normally or reversely driven to tilt the opening / closing body between
A sensor that detects normal rotation or reverse rotation of the motor and outputs a pulse corresponding to each rotation direction for each detection;
Count means for up-counting or down-counting pulses detected by the sensor according to the forward or reverse direction of the motor, and determining the position of the opening / closing body based on the count value counted by the count means Position determining means to perform,
An opening / closing body control device for controlling the movement of the opening / closing body by driving the motor using the determination result of the position determination means,
When the opening / closing body moves in the tilt-up direction from the fully open position of the slide to the fully open position of the tilt toward the fully open position of the tilt, the counting means uses the count value with the fully open position of the tilt as a reference position. And a count value with the slide fully open position as a reference position when the opening / closing body moves from the tilt fully open position to the slide fully open position via the fully closed position. And a second counter for counting the pulses at
The position determining means determines the position of the opening / closing body with reference to the first counter when the opening / closing body moves in the tilt-up direction, and when the opening / closing body moves in the slide open direction. An opening / closing body control device that determines the position of the opening / closing body with reference to the second counter.

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