JP2011095176A - Meter system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a meter system for reducing occurrence of an inaccurate instruction of a vehicle state value and a user's wrong judgment while integrating a system. <P>SOLUTION: When it is determined that wrong judgment prevention flasher drive conditions are satisfied regardless of whether stopper position detection operation execution conditions are satisfied or not, a control unit 60 performs switching control of on/off of semiconductor switches 52, 54, and does not execute ZPD processing while performing the switching control of on/off of the semiconductor switches 52, 54. When it is not determined that the wrong judgment prevention flasher drive conditions are satisfied (when it is determined that low-need flasher drive conditions are satisfied or when it is not determined that low-need flasher drive conditions are satisfied), the control unit 60 executes ZPD processing, and does not execute switching control of the semiconductor switches 52, 54 during execution of the ZPD processing. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a meter system including a vehicle indicating instrument that swings a pointer by a step motor.

  Conventionally, there has been known a vehicle indicating instrument that rotates a pointer by applying a drive signal alternating according to an electrical angle to a field winding of a step motor to indicate a vehicle state value according to the rotation position of the pointer. It has been. In such a vehicle indicating instrument, the pointer is returned to the zero position indicating the zero value of the vehicle state value by rotating in the return zero direction. Further, the stopper mechanism stops at a stopper position within a predetermined range from the zero position to the return zero direction, and an electrical angle corresponding to the stopper position is used as a reference for drive signal control.

  For example, in the vehicle indicating instrument disclosed in Patent Document 1, an induced voltage generated in a field winding is detected while controlling a drive signal applied to the field winding of the step motor so as to drive the pointer to rotate in the direction of return to zero. is doing. As a result, an induced voltage is generated in the field winding while the pointer is rotating, and when the pointer is stopped, the induced voltage generated in the field winding is lowered. Therefore, if the detection voltage of the induced voltage generated in the field winding is less than the set value, it is estimated that the pointer has stopped at the stopper position (stopper position detection operation), and the electric power corresponding to the stopper position is estimated. The corner is set to update. According to such a series of processing, even if the stepping motor steps out due to disturbances such as vibration before starting the indicator instrument and the rotational position of the pointer is shifted, the drive signal is accurately calculated based on the updated electrical angle. It becomes possible to control.

Japanese Patent No. 3770095

  By the way, the meter system has a flasher device that performs turn lamps (hazard lamps), buzzers, and flashing control of the buzzer that blows in conjunction with the flashing of the lamp, in addition to the above-mentioned vehicle indicating instrument. I have. In recent years, it has been considered to integrate the system by incorporating such a function of the flasher device (flasher function) into the above-mentioned indicator for a vehicle and reduce the production cost of the vehicle.

  However, when the flasher function is incorporated into the vehicle indicating instrument, the field winding constituting the vehicle indicating instrument and the flasher semiconductor switch for flashing the flasher may be close to each other in the meter system. Further, in order to blink the flasher, it is necessary to turn on and off the semiconductor switch, and induction noise is generated by turning on and off the semiconductor switch. Therefore, if the semiconductor switch of the flasher function unit is operated during the stopper position detection operation, erroneous detection of the stopper position may occur due to the induction noise, and the stopper position may be shifted. As a result, there is a possibility that a problem that the vehicle state value cannot be correctly indicated can occur.

  In order to prevent the occurrence of the above problem, it is conceivable to always give priority to the stopper position detection operation over the flasher function. However, the user can determine whether the flasher function is operating or not only by flashing the flasher. Therefore, if the flashing of the flasher is delayed when the combination lever is operated or the hazard switch is turned on, the user may erroneously determine that the flasher function is defective.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to reduce the occurrence of an inaccurate indication of a vehicle state value and a user's misjudgment while integrating the system. It is to provide a meter system.

  In order to achieve such an object, in the first aspect of the invention, when the flasher on / off switching control unit determines that the misjudgment prevention flasher driving condition is satisfied regardless of whether the stopper position detection operation execution condition is satisfied or not. The on / off control of the flasher semiconductor switch is controlled, and the drive control unit does not execute the stopper position detection operation while the on / off control of the flasher semiconductor switch is controlled. That is, priority is given to the on / off switching control of the flasher semiconductor switch. On the other hand, if the flasher on / off switching control unit determines that the low-necessity flasher driving condition is satisfied, the flasher semiconductor switch on / off switching control is performed while the stopper position detection operation is being performed by the drive control unit. do not do. That is, the stopper position detection operation is executed with priority.

  Thus, according to the first aspect of the present invention, when it is determined that the misjudgment prevention flasher driving condition is satisfied, the on / off switching control of the flasher semiconductor switch is preferentially executed. Is less likely to be delayed, and it is possible to reduce erroneous determination by the user that the flasher function is defective. Also, even if the misjudgment prevention flasher drive condition is satisfied or the low necessity flasher drive condition is satisfied, the stopper position detection operation and the ON / OFF switching control of the flasher semiconductor switch are not executed simultaneously. . Therefore, the stopper position detected by the stopper position detection operation is not affected by the induction noise generated by turning on and off the flasher semiconductor switch, and corresponds to the stopper position that is less likely to be influenced by the induction noise by the drive control unit. The electrical angle is set as the zero point. And since possibility that an inaccurate zero will become a standard of a drive signal becomes low, it becomes possible to reduce that an inaccurate indication of a vehicle state value occurs. Therefore, according to the first aspect of the present invention, it is possible to reduce the occurrence of an inaccurate indication of the vehicle state value and an erroneous determination by the user while integrating the system.

  Note that the flasher function unit may include not only the flasher but also a buzzer that sounds in conjunction with the flashing of the flasher. In this case, as in the third aspect of the invention, in order to integrate the vehicle indicating instrument and the flasher function unit as a meter system, at least one of a flasher semiconductor switch and a buzzer semiconductor switch constituting the flasher function unit And the field winding of the step motor may be arranged close to each other.

  Therefore, in the invention according to claim 3, the flasher on / off switching control unit and the buzzer on / off switching control unit determine that the misjudgment prevention flasher driving condition is satisfied regardless of whether the stopper position detection operation execution condition is satisfied or not. In this case, on / off control of the flasher semiconductor switch and the buzzer semiconductor switch is controlled, and the drive control unit switches on / off of the semiconductor switch arranged in the state close to the field winding among the flasher semiconductor switch and the buzzer semiconductor switch. While being controlled, the stopper position detection operation is not executed. That is, priority is given to the on / off switching control of the semiconductor switch. On the other hand, the flasher on / off switching control unit and the buzzer on / off switching control unit, when it is determined that the low-necessity flasher driving condition is satisfied, In addition, the on / off control of the semiconductor switch arranged close to the field winding among the buzzer semiconductor switches is not controlled. That is, the stopper position detection operation is executed with priority.

  Thus, in the invention according to claim 3, when it is determined that the misjudgment prevention flasher driving condition is satisfied, the on / off switching control of the semiconductor switch is preferentially executed, so that the flasher starts blinking. Is less likely to be delayed, and it is possible to reduce erroneous determination by the user that the flasher function is defective. Further, even if the misjudgment prevention flasher driving condition is satisfied or the low necessity flasher driving condition is satisfied, the stopper position detection operation and the semiconductor switch ON / OFF switching control are not executed simultaneously. Therefore, the stopper position detected by the stopper position detection operation is not affected by inductive noise generated by the on / off of the semiconductor switch arranged in the state close to the field winding among the flasher semiconductor switch and the buzzer semiconductor switch, The electrical angle corresponding to the stopper position that is unlikely to be affected by the induction noise by the drive control unit is set as the zero point. And since possibility that an inaccurate zero will become a standard of a drive signal becomes low, it becomes possible to reduce that an inaccurate indication of a vehicle state value occurs. Therefore, according to the third aspect of the present invention, it is possible to reduce the occurrence of an inaccurate indication of the vehicle state value and an erroneous determination by the user while integrating the system.

  In the case of being arranged close to each other, the system was integrated by arranging at least one of the flasher semiconductor switch and the buzzer semiconductor switch and the field winding of the step motor on the same substrate. There is a case. Alternatively, the system may be integrated by configuring the drive control unit and at least one of the flasher on / off switching control unit and the buzzer on / off switching control unit with the same control device.

  By the way, for example, in a situation where the performance of the battery power supply is remarkably deteriorated (when the supply voltage of the battery power supply is lower than the predetermined voltage), when the ignition switch is turned on, various devices including the drive control unit are If the operation is stopped only after being temporarily activated, and the ignition switch is turned on again after the operation is stopped, various devices may be normally activated.

  Specifically, before the ignition switch is turned on, various devices including the drive control unit are not operating and the load is light, so the supply voltage from the battery power supply exceeds the operating voltage of the various devices. Various devices are temporarily activated. After the various devices are started up, the various devices start to operate and the load becomes heavy. Therefore, the supply voltage from the battery power supply falls below the operating voltage of the various devices, and the various devices stop operating (low Voltage reset). However, when the ignition switch is turned on again after the operation is stopped, the supply voltage from the battery power supply again exceeds the operating voltage of the various devices, and the various devices start operating. At this time, when the alternator operates to generate power, various devices may continue to operate (starting up from a low voltage reset).

  When returning from such a low-voltage reset, it is highly likely that various devices will operate temporarily before the return and stop operating without returning the pointer to the stopper position. There is a high possibility that they are separated from each other, and there is a high need to immediately execute the stopper position detection operation.

  The situation where the low voltage reset occurs is not always generated when the ignition switch is turned on in a situation where the supply voltage of the battery power supply is significantly deteriorated. Even if the ignition switch is not turned on, a low voltage reset can occur in a situation where the performance of the battery power supply is significantly degraded.

  Therefore, in the configuration according to claim 1, in the invention according to claim 2, in order to determine whether or not the start is from the low voltage reset, the drive control unit sets the stopper position detection operation execution condition as: It has a high necessity stopper position detection operation execution condition that is highly necessary to execute the stopper position detection operation promptly, and a confirming stopper position detection operation execution condition that is low in necessity to execute the stopper position detection operation promptly. When it is determined that the low necessity flasher drive condition and the high necessity stopper position detection operation execution condition are satisfied at the same time, the drive control unit executes the stopper position detection operation, and the flasher on / off switching control unit While the stopper position detecting operation is being executed by the drive control unit, the on / off switching control of the flasher semiconductor switch is not executed, while the low necessity flasher driving condition and the confirming stopper position detecting operation executing condition are simultaneously satisfied. The flasher on / off switching control unit controls on / off of the flasher semiconductor switch, and the drive control unit does not execute the stopper position detection operation while the on / off control of the flasher semiconductor switch is controlled. It was.

  Alternatively, in the configuration according to claim 3, in the invention according to claim 4, the drive control unit is a high necessity stopper that is highly required to promptly execute the stopper position detection operation as the stopper position detection operation execution condition. It has a position detection operation execution condition and a confirming stopper position detection operation execution condition that is less likely to promptly execute the stopper position detection operation. When it is determined that the low necessity flasher driving condition and the high necessity stopper position detection operation execution condition are satisfied simultaneously, the drive control unit executes the stopper position detection operation, and the flasher on / off switching control unit and The buzzer on / off switching control unit performs switching control of on / off of the semiconductor switch arranged in the state close to the field winding among the flasher semiconductor switch and the buzzer semiconductor switch while the stopper position detection operation is performed by the drive control unit. do not do. On the other hand, if it is determined that the low necessity flasher driving condition and the confirming stopper position detection operation execution condition are simultaneously satisfied, the flasher on / off switching control unit and the buzzer on / off switching control unit are the flasher semiconductor switch and the buzzer semiconductor switch. The drive control unit performs the stopper position detection operation while the on / off control of the semiconductor switch arranged close to the field winding is controlled among the flasher semiconductor switch and the buzzer semiconductor switch. It was decided not to execute.

  According to the configuration of the second aspect or the configuration of the fourth aspect, the stopper position detection operation can be executed in preference to the on / off switching control of the semiconductor switch at the time of starting from the low voltage reset. Thus, at the time of normal activation, the semiconductor switch on / off switching control can be executed in preference to the stopper position detection operation.

  The high necessity stopper position detection operation execution condition is restored when the drive control unit stops operation due to a decrease in the supply voltage to the drive control unit and then the supply voltage increases after the operation stop. Start-up from low voltage reset. Specifically, the high necessity stopper position detection operation execution condition is that the drive control unit is started in a state where the supply voltage to the drive control unit is lower than a predetermined threshold. Moreover, the confirming stopper position detection operation execution condition is not a start from the low voltage reset but a normal start. Specifically, the confirming stopper position detection operation execution condition is that the drive control unit is activated in a state where the supply voltage to the drive control unit is equal to or higher than a predetermined threshold.

  In the configuration according to any one of claims 1 to 4, as in the invention according to claim 5, the misjudgment prevention flasher driving condition is determined by wireless communication from a portable device that remotely controls a vehicle on which the meter system is mounted. It may be included that the transmitted command signal is input. As a result, a so-called answerback operation of the vehicle is executed with priority over the stopper position detection operation.

  Moreover, in the structure of the said Claims 1-5, like the invention of Claim 6, in the misjudgment prevention flasher drive conditions, the combination lever of the vehicle carrying the said meter system is a turn lamp blinking position. It should be included that it is set. As a result, a so-called turn operation is executed with priority over the stopper position detection operation. Moreover, it can be set as the structure according to the regulations that "These turn lamps must blink within 1 second after a user's manual operation."

  Further, in the configuration according to the first, third, fifth, and sixth aspects, as in the invention according to the seventh aspect, the hazard lamp switch of the vehicle on which the meter system is mounted is included in the low necessity flasher driving condition. It may be included that the hazard blink position is set. As a result, the stopper position detection operation can be executed with priority over the so-called hazard operation. The configuration described in claim 7 can be used in combination with the configuration described in claim 2 or 4.

It is a front view which shows the front structure about 1st Embodiment of the meter system which concerns on this invention. It is sectional drawing along the II-II line | wire in FIG. It is a block diagram which shows the electric circuit structure about the meter system of 1st Embodiment. It is a perspective view which shows the principal part from a perspective direction about the meter system of 1st Embodiment. It is a top view which shows the principal part from the plane direction about the meter system of 1st Embodiment. It is a characteristic view which shows an example of the drive signal applied to the field winding of the step motor about the meter system of 1st Embodiment. It is a front view which shows the state which the pointer stopped in the stopper position about the meter system of a 1st embodiment from the front direction. It is a flowchart which shows an example of the process sequence about the meter starting process which the meter system of 1st Embodiment performs. It is a flowchart which shows an example of the process sequence about the meter starting process which the meter system of 2nd Embodiment performs. It is an example of the priority table used during the process in the meter starting process which the meter system of a 2nd embodiment performs.

(First embodiment)
Hereinafter, a first embodiment of a meter system according to the present invention will be described with reference to FIGS. In the present embodiment, the meter system 1 is assumed to be installed in front of the driver's seat in the vehicle as a speedometer.

  As shown in FIGS. 1 to 3, the meter system 1 includes a vehicle indicating instrument 1 a having an instrument panel 10, a pointer 20, a rotary inner unit 30, a substrate 40, and a control unit 60. .

  As shown in FIG. 1, the instrument panel 10 has a vehicle speed display unit 11 for displaying a vehicle speed value on a display surface 10 a, and the display surface 10 a is arranged toward the driver's seat side. The vehicle speed display unit 11 has a plurality of vehicle speed values (0 km / h, 20 km / h,..., 160 km / h) from a zero value (0 km / h) as a reference of the vehicle speed value to an upper limit value (180 km / h). 180 km / h) is displayed in an arc shape. The vehicle speed value corresponds to the vehicle state value described in the claims, and the instrument panel 10 corresponds to the scale plate described in the claims.

  As shown in FIG. 1 and FIG. 2, the pointer 20 is connected to the pointer shaft 30 b of the rotary inner unit 30 on the base end portion 21 side, and in the return zero direction X and the opposite zero direction Y. It can be rotated along the display surface 10 a of the instrument panel 10. The pointer 20 indicates a value corresponding to the rotational position among the vehicle speed values displayed on the vehicle speed display unit 11 by rotating in the nulling direction X or the zeroing direction Y. The pointer 20 can be returned to the zero position indicating the zero value by rotating in the return zero direction X. In the present embodiment, the nulling direction X is a direction from the upper limit value toward the zero value, and the separation zero direction Y is a direction from the zero value toward the upper limit value.

  As shown in FIG. 2, the turning inner unit 30 includes an inner unit main body 30a, a pointer shaft 30b, and a casing 30c. The internal unit main body 30 a is disposed on the back side of the substrate 40 substantially parallel to the instrument panel 10. The internal machine main body 30a incorporates a two-phase step motor M, a reduction gear mechanism G, and a stopper mechanism S (FIG. 4) in a casing 30c. The pointer shaft 30 b is supported by a casing 30 c fixed to the back surface of the substrate 40, and supports the proximal end portion 21 of the pointer 20 through the substrate 40 and the instrument panel 10. The internal machine main body 30a rotationally drives the pointer shaft 30b coaxially with the output stage gear 34 of the reduction gear mechanism G and consequently the pointer 20 by the reduction rotation of the reduction gear mechanism G interlocking with the rotation of the step motor M.

  As shown in FIGS. 4 and 5, the step motor M is configured by combining a stator Ms and a magnet rotor Mr. The stator Ms has a yoke 31 and two-phase field windings 32 and 33. The yoke 31 has a pair of magnetic poles 31a and 31b having a pole shape, and an A-phase field winding 32 is wound around the magnetic pole 31a, while a B-phase field winding 33 is wound around the magnetic pole 31b. It is wound. The magnet rotor Mr is coaxially fixed to the rotation shaft 35a of the reduction gear mechanism G. N poles and S poles as magnetic poles are alternately formed in the rotation direction on the outer circumferential surface of the magnet rotor Mr that opens a gap between the magnetic poles 31a and 31b of the yoke 31.

  In the step motor M having such a configuration, as shown in FIG. 6, an AC A-phase drive signal whose voltage alternates in a cosine function according to the electrical angle is applied to the A-phase field winding 32. On the other hand, an alternating B-phase drive signal whose voltage alternates in a sine function according to the electrical angle is applied to the B-phase field winding 33. When such A-phase and B-phase drive signals that are 90 degrees out of phase with each other are applied, an alternating magnetic flux is generated in each of the field windings 32 and 33, and the generated alternating magnetic flux is converted into the yoke 31 and the magnet rotor Mr. Pass between the magnetic poles. The magnet rotor Mr rotates in accordance with the voltage change of the A-phase and B-phase drive signals according to the electrical angle.

  As shown in FIG. 4, the reduction gear mechanism G has a plurality of gears 34 to 37 made of spur gears. The output stage gear 34 is coaxially connected to the pointer shaft 30b, and the input stage gear 35 is coaxially fixed to the rotary shaft 35a supported by the casing 30c. The intermediate gears 36 and 37 are coaxially supported by a rotating shaft 36a fixed to the casing 30c, so that they can rotate integrally. The intermediate gear 36 meshes with the output stage gear 34, and the intermediate gear 37 meshes with the input stage gear 35.

  With this configuration, the reduction gear mechanism G reduces the rotation of the magnet rotor Mr of the step motor M and transmits the reduced rotation to the pointer 20. Therefore, when the rotational position of the magnet rotor Mr changes according to the change of the A-phase and B-phase drive signals according to the electrical angle, the rotational position of the pointer 20 also changes. In the present embodiment, the direction in which the electrical angle is decreased corresponds to the zero return direction X of the pointer 20, and the direction in which the electrical angle is increased corresponds to the zeroing direction Y of the pointer 20.

  As shown in FIG. 4, the stopper mechanism S includes a contact member 38 and a stopper member 39. The abutting member 38 is formed in a strip plate shape protruding from the output stage gear 34, and can rotate integrally with the gear 34. The stopper member 39 is formed in an L shape that protrudes inward from the casing 30 c, and the protruding end 39 a is on the side corresponding to the return zero direction X with respect to the contact member 38 on the rotation track of the contact member 38. Is located.

  As shown in FIG. 7, the pointer 20 has a predetermined range from the zero position to the zero return direction X in a state where the contact member 38 is locked to the tip end portion 39 a of the stopper member 39 by the rotation in the zero return direction X. It stops at the inner stopper position. In the present embodiment, in the ZPD process described later, the electrical angle corresponding to the stopper position is updated and set as the zero point θ0 (0 degree). Incidentally, when the meter system 1 is manufactured, the stopper position is set within a range of, for example, 450 degrees in terms of the electrical angle of the step motor M from the zero position of the pointer 20 to the zero return direction X.

  As shown in FIG. 3, the meter system 1 includes a flasher function unit 50 having an indicator 51, a flasher semiconductor switch 52, a buzzer 53, and a buzzer semiconductor switch 54.

  Among these, the indicator 51 is disposed on the display surface 10 a (not shown in FIG. 1), and is connected to the control unit 60 via the flasher semiconductor switch 52. When the flasher semiconductor switch 52 is turned on, the indicator 51 is supplied with power from the control unit 60 and is lit. On the other hand, when the flasher semiconductor switch 52 is turned off, the power from the control unit 60 is turned on. It is shut off and turned off. Then, the on / off switching of the flasher semiconductor switch 52 is controlled by the control unit 60, so that the indicator 51 blinks.

  Further, the buzzer 53 is connected to the control unit 60 via the buzzer semiconductor switch 54. When the buzzer semiconductor switch 54 is turned on, the buzzer 53 is supplied with power from the control unit 60, and when the buzzer semiconductor switch 54 is turned off, the buzzer 53 is powered by the control unit 60. It is blocked and does not sound. The control unit 60 controls the on / off of the buzzer semiconductor switch 54 in conjunction with the on / off of the flasher semiconductor switch 52, so that the buzzer 53 sounds in conjunction with the indicator 51.

  Note that the indicator 51 is illustrated as a single indicator in FIG. 3 for the sake of convenience, but actually, the right turn blinks in synchronization with the blinking of a turn lamp for right turn (not shown) to indicate that the vehicle turns right. And a left turn indicator that blinks in synchronization with blinking of a left turn turn lamp (not shown) for indicating that the vehicle makes a left turn. The indicator 51 corresponds to the flasher described in the claims.

  The control unit 60 is mainly composed of a microcomputer having a memory 61, and is mounted on the substrate 40 (FIG. 2). The memory 61 stores an execution program for executing meter activation processing (including stopper position detection operation, zero point setting operation, ZPD processing, etc.) S1 described later, and the meter activation processing S1 is executed. The latest zero point θ0 set (updated) is also stored. In addition, the memory 61 has a storage area for a ZPD flag indicating that the ZPD processing has been executed while the control unit 60 is being activated.

  The control unit 60 is electrically connected to the flasher function unit 50, a vehicle door sensor 70, a vehicle speed sensor 71, a vehicle side device (not shown), an ignition switch IG, and a battery power source B which will be described later. The control unit 60 is activated by direct power supply from the battery power supply B when the door sensor 70 detects the opening of the vehicle door or when an unlock signal or a lock signal is input from the vehicle side device. In addition, when the ignition switch IG is turned on until a set time (for example, 2 minutes) elapses after activation, the control unit 60 maintains the activation state by power supply from the battery power supply B, and thereafter the ignition unit IG When the switch IG is turned off, it sleeps. On the other hand, the control unit 60 sleeps when the ignition switch IG is not turned on until the set time elapses after activation, and restarts when the ignition switch IG is turned on after the sleep. The restart after the sleep may be performed, for example, when the vehicle door is opened or when the brake pedal is depressed, in addition to when the ignition switch IG is turned on. The control unit 60 sets the ZPD flag when the ZPD process is executed during the activation, and resets the ZPD flag immediately before going to sleep. Further, as will be described later, the control unit 60 determines whether the voltage (supply voltage) supplied from the battery power source B is equal to or higher than a predetermined threshold or lower than the predetermined threshold at the time of activation. In the present embodiment, for example, “7 [V]” is employed as the predetermined threshold, but the present invention is not limited to this, and “8 [V]”, “6 [V]”, or the like may be employed.

  The control unit 60 executes the stopper position detection operation when a predetermined stopper position detection operation execution condition is satisfied. Here, the outline of the stopper position detection operation will be described. The field windings 32 and 33 of the step motor M are arranged so that the pointer 20 once rotates in the zeroing direction Y and then rotates in the zeroing direction X. The induced voltage generated in the field windings 32 and 33 is detected while controlling the A-phase and B-phase drive signals applied to the pointer 20 and the pointer 20 is stopped at the stopper position using the detected induced voltage. This is an operation for detecting. Since this stopper position detection operation is publicly known, detailed description thereof is omitted here.

  Further, the stopper position detection operation execution condition is that the control unit 60 is activated. For example, the control unit 60 opens the vehicle door, turns on the ignition switch IG, or depresses the brake pedal. Start with that. Further, the control unit 60 executes a zero point setting operation which is an operation for setting (updating) the electrical angle corresponding to the stopper position detected by executing the stopper position detecting operation as the zero point θ0. Therefore, the control unit 60 corresponds to the zero point setting means described in the claims. The stopper position detection operation and the zero point setting operation are also referred to as ZPD processing. The control unit 60 applies the A-phase and B-phase drive signals to the field windings 32 and 33 of the step motor M with reference to the zero point θ0 set by executing the ZPD process. The control unit 60 corresponds to a stopper position detection operation execution means, a zero point setting means, an application means, a drive control unit, and a control device described in the claims.

  The control unit 60 detects the vehicle speed sensor 71 by controlling the A-phase and B-phase drive signals based on the zero point θ0 of the electrical angle stored in the memory 61 in the start-up state after execution of the ZPD process. The vehicle speed value is instructed to the pointer 20.

  Further, the control unit 60 determines whether or not a predetermined flasher driving condition based on a manual operation of the user is satisfied, and when determining that the flasher driving condition is satisfied, the control unit 60 responds to the flasher driving condition determined to be satisfied. In order to blink the flasher in this manner, the on / off control of the flasher semiconductor switch 52 and the buzzer semiconductor switch 54 is controlled.

  Specifically, in a flasher driving condition (more specifically, a misjudgment prevention flasher driving condition described later), a right turn turn lamp disposed on the right side in the forward direction of the vehicle on which the meter system 1 is mounted blinks, or the forward direction of the vehicle. A combination lever (not shown) that blinks a left turn turn lamp arranged on the left side is set to a turn lamp blinking position (a position shifted by a predetermined angle in the vertical direction from the reference position).

  Further, in the flasher driving condition (detailed below, the low necessity flasher driving condition), the right turn turn lamp disposed on the right side in the forward direction of the vehicle equipped with the meter system 1 and the left side in the forward direction of the vehicle are disposed. It includes that the hazard lamp switch that blinks both the left turn turn lamps is set to the hazard blinking position (position pushed from the reference position).

  Further, as a flasher driving condition (specifically, a misjudgment prevention flasher driving condition), a command signal is input to the control unit 60 from a portable device (not shown) that remotely controls the vehicle using wireless communication with the vehicle. included. Specifically, in the portable device, an unlock button for unlocking the vehicle door, a lock button for locking the vehicle door, and the like are arranged, and when these unlock button and lock button are pushed, An unlock signal and a lock signal indicating that are transmitted from the portable device. These unlock signals and lock signals are received by a vehicle-side device (not shown) mounted on the vehicle and input to the control unit 60. The flasher driving condition includes that such an unlock signal or lock signal is input to the control unit 60.

  Then, when the combination lever is set at a position where the right turn turn lamp blinks, the control unit 60 flashes so that the right turn indicator blinks and the buzzer 53 sounds in conjunction with the blinking of the right turn turn lamp. On / off control of the semiconductor switch 52 and the buzzer semiconductor switch 54 is controlled. Similarly, when the combination lever is set at a position where the left turn turn lamp blinks, the control unit 60 causes the left turn indicator to blink in conjunction with the blinking of the left turn turn lamp and the buzzer 53 to sound. On / off control of the flasher semiconductor switch 52 and the buzzer semiconductor switch 54 is controlled. Further, when the hazard lamp switch is set to the on state, the control unit 60 flashes so that the indicator 51 blinks and the buzzer 53 sounds in conjunction with blinking of both the right turn turn lamp and the left turn turn lamp. On / off control of the semiconductor switch 52 and the buzzer semiconductor switch 54 is controlled. In addition, when an unlock signal or a lock signal is input from the portable device, the control unit 60 interlocks with blinking of both the right turn turn lamp and the left turn turn lamp to indicate to the user that these signals have been input. Thus, a so-called answerback is performed in which the on / off control of the flasher semiconductor switch 52 and the buzzer semiconductor switch 54 is controlled so that the indicator 51 blinks and the buzzer 53 sounds. The control unit 60 corresponds to a flasher on / off switching control unit and a buzzer on / off switching control unit described in the claims.

  Here, in the meter system 1 of the present embodiment, the field windings 32 and 33 constituting the step motor M are arranged on the substrate 40, and the flasher semiconductor switch 52 and the buzzer constituting the flasher function unit 50 are arranged. The semiconductor switch 54 is also disposed on the same substrate 40, and is disposed on the same substrate 40.

  In the meter system 1 according to the present embodiment, the same control unit 60 executes the ZPD process and the on / off switching control of both the flasher semiconductor switch 52 and the buzzer semiconductor switch 54.

  Thus, by integrating the vehicle indicating instrument 1a and the flasher function unit 50 as the meter system 1, the system cost of the vehicle can be reduced. The field windings 32 and 33, the flasher semiconductor switch 52, and the buzzer semiconductor switch 54 are arranged close to each other.

  When the field windings 32 and 33, the flasher semiconductor switch 52, and the buzzer semiconductor switch 54 are arranged close to each other, when the flasher function unit 50 operates when the ZPD processing of the step motor M is performed, the flasher semiconductor switch 52 and the buzzer semiconductor switch 54 may cause erroneous detection of the stopper position due to induction noise generated by the on / off switching control of the buzzer semiconductor switch 54, and the stopper position may be shifted. As a result, there is a possibility that the vehicle speed value cannot be correctly indicated.

  In order to prevent the occurrence of the above problem, it is conceivable to always give priority to the stopper position detection operation over the flasher function. However, the user can determine the operation / non-operation of the flasher function only by blinking the indicator 51. Therefore, if the flashing of the flasher is delayed when the combination lever is operated or the hazard switch is turned on, the user may erroneously determine that the flasher function is defective.

  Therefore, the control unit 60 executes the meter activation process S1 shown in FIG. 8 immediately after the activation. As described above, the stopper position detection operation execution condition is that the control unit 60 is activated. Therefore, the stopper position detection operation execution condition is satisfied when the control unit 60 is activated.

  When the control unit 60 starts executing the meter activation process S1 immediately after the activation, first, as a determination process in step S11, it is determined whether or not an erroneous determination prevention flasher driving condition is satisfied. Here, the misjudgment prevention flasher driving condition is a flasher drive that is highly necessary to prevent misjudgment by the user by quickly switching and controlling the semiconductor switches 52 and 54 in order to blink the indicator 51 among the flasher driving conditions. When this misjudgment prevention flasher driving condition is satisfied, it is highly necessary to switch on and off the semiconductor switches 52 and 54. In the present embodiment, as a misjudgment prevention flasher driving condition, the combination lever is set to the turn lamp blinking position, and an unlock signal or a lock signal transmitted from the portable device is input to the control unit 60. It has been done.

  When it is determined in the determination process of step S11 that the misjudgment prevention flasher drive condition is satisfied (“Yes” in the determination process of step S11), the control unit 60 determines that the determination is satisfied as the subsequent process of step S12. In order to cause the indicator 51 to blink in a manner corresponding to the determined flasher driving condition and to sound the buzzer 53 in conjunction with the blinking, on / off control of the flasher semiconductor switch 52 and the buzzer semiconductor switch 54 is controlled. When the on / off control of the semiconductor switches 52 and 54 is controlled, the control unit 60 proceeds to the determination process of step S11 and executes again.

  On the other hand, in the determination process of step S11, when it is not determined that the misjudgment prevention flasher driving condition is satisfied (“No” in the determination process of step S11), it is determined that the low necessity flasher driving condition is satisfied. Or, this means that it is determined that the low necessity flasher driving condition is not satisfied. Here, the low-necessity flasher driving condition is a low-necessity flasher driving condition in which the semiconductor switches 52 and 54 are quickly switched and controlled to prevent the user from making an erroneous determination in order to blink the indicator 51. If this low necessity flasher drive condition is satisfied, the necessity of switching control of the semiconductor switches 52 and 54 is low. In the present embodiment, the hazard lamp switch is set to the hazard blinking position as the low necessity flasher driving condition.

  If it is not determined in the determination process of step S11 that the erroneous determination prevention flasher drive condition driving condition is satisfied ("No" in the determination process of step S11), the determination process of step S13 is stored in the memory 61. It is determined whether the ZPD process has been executed by determining whether the ZPD flag is set or reset. Here, when the ZPD flag is reset and it is not determined that the ZPD process has been executed (“No” in the determination process of step S13), the control unit 60 performs the ZPD process as the process of the subsequent step S14. Execute. On the other hand, when it is determined that the ZPD flag is set and the ZPD process has been executed, the control unit 60 proceeds to the determination process of the previous step S11 and executes the determination process of step S11 again.

  In this way, when it is determined that the misjudgment prevention flasher drive condition is satisfied, the control unit 60 switches on / off the semiconductor switches 52 and 54 regardless of whether the stopper position detection operation execution condition is satisfied or not. However, the ZPD process is not executed while the semiconductor switches 52 and 54 are switched on and off. That is, the on / off switching control of the semiconductor switches 52 and 54 is executed with priority. On the other hand, the control unit 60 determines that the erroneous determination prevention flasher driving condition is not satisfied (when it is determined that the low necessity flasher driving condition is satisfied or when the low necessity flasher driving condition is satisfied). If not, the control unit 60 executes the ZPD process and does not execute the switching control of the semiconductor switches 52 and 54 while the ZPD process is being executed. That is, the ZPD process is executed with priority. Therefore, when it is determined that the misjudgment prevention flasher driving condition is satisfied, the on / off switching control of the semiconductor switches 52 and 54 is preferentially executed, so that the blinking start of the indicator 51 is less likely to be delayed, It is possible to reduce erroneous determination by the user that the flasher function is defective.

Further, the ZPD process and the on / off switching control of the semiconductor switches 52 and 54 are not executed at the same time even when the misjudgment prevention flasher driving condition is satisfied or the low necessity flasher driving condition is satisfied. . Therefore, the stopper position detected by the ZPD process is not affected by the induced noise generated by turning on and off the semiconductor switches 52 and 54, and corresponds to the stopper position that is less likely to be affected by the induced noise by the control unit 60. The electrical angle is set as the zero point. And since possibility that an inaccurate zero will become a standard of a drive signal becomes low, it becomes possible to reduce that an inaccurate indication of a vehicle speed value (vehicle state value) occurs.
(Second Embodiment)
Next, a second embodiment of the meter system according to the present invention will be described with reference to FIG. 9 and FIG. Since the second embodiment also has a configuration according to the first embodiment, only the parts different from the first embodiment will be described.

  First, an outline of parts different from the first embodiment will be described. In the first embodiment, the control unit 60 turns on and off the semiconductor switches 52 and 54 based on the determination result as to whether the flasher drive condition is a misjudgment prevention flasher drive condition or a low necessity flasher drive condition. In the present embodiment, whether the flasher driving condition is the misjudgment preventing flasher driving condition or the low necessity flasher driving condition is determined. In addition to the determination result, the semiconductor switches 52 and 54 are also based on the determination result as to whether the stopper position detection operation execution condition is the high necessity stopper position detection operation execution condition or the confirming stopper position detection operation execution condition. It is determined which of the on / off switching control and the ZPD processing is to be executed with priority.

  Next, a different part from 1st Embodiment is demonstrated in detail.

  The memory 61 of the control unit 60 has an execution program for executing meter activation processing (including stopper position detection operation, zero point setting operation, ZPD processing, etc.) S2 described later, and is used when the meter activation processing S2 is executed. The priority order table T2 (FIG. 10) is stored, and the latest zero point θ0 set (updated) by executing the meter activation process S2 is also stored.

  In order to execute the stopper position detection operation, a predetermined stopper position detection operation execution condition must be satisfied, and it is highly possible that the pointer 20 is separated from the stopper position in the stopper position detection operation execution condition. High-necessity stopper position detection operation execution condition that is highly necessary to promptly perform stopper position detection operation and confirming stopper position detection that is executed to make sure that the pointer 20 is not likely to be separated from the stopper position. There are operation execution conditions. When the high necessity stopper position detection operation execution condition is satisfied, it is highly necessary to execute the stopper position detection operation.On the other hand, when the confirming stopper position detection operation execution condition is satisfied, the necessity of executing the stopper position detection operation is Not very expensive. When the stopper position detection operation is executed, the vehicle speed value can be correctly indicated, but the user feels uncomfortable because the pointer 20 rotates in the zero return direction even though the user has not performed any operation. May be given.

  Therefore, in the present embodiment, the control unit 60 performs the meter activation process S2 immediately after the activation. When the control unit 60 starts executing the meter activation process S2, first, as a determination process in step S21, the priority order table T2 is used to prioritize either the on / off switching control of the semiconductor switches 52 and 54 or the ZPD process. To determine whether to execute.

  Here, the priority table T2 will be described. As shown in FIG. 10, “WakeUp” in the battery power supply B column of the priority order table T2 means that the control unit 60 is started in a state where the supply voltage of the battery power supply B is equal to or higher than a predetermined threshold, This means that the stopper position detection operation execution condition is satisfied. Further, “Reset (low voltage reset)” in the column of the battery power source B of the priority order table T2 means that the control unit 60 is activated in a state where the supply voltage of the battery power source B is lower than a predetermined threshold value, and the stopper is activated by the activation This means that the position detection operation condition is satisfied. Further, “ZPD” in the column of the battery power source B of the priority order table T2 means that a command for forcibly executing the ZPD processing is input to the control unit 60 using an appropriate switch or the like (not shown). In this way, the stopper position detection operation execution condition is satisfied. In the column of the ignition switch IG in the priority table T2, “Reset (low voltage reset)” means that the control unit is turned on when the ignition switch IG is turned on while the supply voltage of the battery power source B is lower than a predetermined threshold. 60 indicates that the stopper position detection operation execution condition is satisfied at the time of activation. Further, in the column of the ignition switch IG of the priority table T2, “ZPD” means that the control unit 60 is activated when the ignition switch IG is turned on while the supply voltage of the battery power source B is equal to or higher than a predetermined threshold value. It means that the stopper position detection operation execution condition is satisfied at the time of activation.

  In the present embodiment, as the above-described high necessity stopper position detection operation execution condition, the control unit 60 is activated in a state where the supply voltage of the battery power source B is lower than a predetermined threshold (the column of the battery power source B in the priority table T2). , “Reset”), an instruction to forcibly execute the ZPD process is input to the control unit 60 using an appropriate switch (not shown) or the like (“ZPD” in the battery power supply B column of the priority table T2). ) That the ignition switch IG is turned on while the supply voltage of the battery power supply B is lower than the predetermined threshold ("Reset" in the column of the ignition switch IG in the priority table T2), and the supply voltage of the battery power supply B That the ignition switch IG is turned on with the To adopt a "ZPD") in the column of the ignition switch IG of the order table T2. Further, in the present embodiment, as the confirmation stopper position detection operation execution condition, the control unit 60 is activated in a state where the supply voltage of the battery power source B is equal to or higher than a predetermined threshold (the battery power source B of the priority order table T2). "WakeUp") is adopted in the column.

  The description of the priority table T2 will be continued. “Answerback” in the operation column of the priority order table T2 means that an unlock signal or a lock signal is input to the control unit 60 from the vehicle side device. Further, “hazard” in the operation column of the priority order table T2 means that the hazard lamp switch is set to the hazard blinking position. Further, “turn” in the operation column of the priority table T2 means that the combination lever is set to the turn lamp blinking position.

  In the present embodiment, as the misjudgment prevention flasher drive condition, an unlock signal or a lock signal is input from the vehicle side device to the control unit 60 (“Unback” in the operation column of the priority table T2), In addition, the fact that the combination lever is set to the turn lamp blinking position (“turn” in the operation column of the priority table T2) is adopted. In the present embodiment, the fact that the hazard lamp switch is set to the hazard blinking position (“hazard” in the operation column of the priority order table T2) is employed as the low necessity flasher driving condition.

  Then, in the determination process of step S21, the control unit 60 performs on / off switching control of the semiconductor switches 52 and 54 as indicated by “flasher 1” in the priority order table T2 when the “answer back” is established. Decide to prioritize processing. In other words, when the control unit 60 determines that the misjudgment prevention flasher drive condition is satisfied, the established stopper position detection operation execution condition is a high necessity stopper regardless of whether the stopper position detection operation execution condition is satisfied or not. Even under the position detection operation execution condition, the semiconductor switches 52 and 54 are controlled to be turned on / off, and the ZPD process is determined not to be performed while the semiconductor switches 52 and 54 are turned on / off. In this case, the control unit 60 may perform the ZPD process after switching the semiconductor switches 52 and 54 on and off. Incidentally, when the above “answer back” is established, it is unlikely that the ignition switch IG is turned on, so “−” is shown in the priority table T2.

  Further, when the “hazard” and the “WakeUp” are established at the same time in the determination process of step S21, the control unit 60 turns on and off the semiconductor switches 52 and 54 as indicated by “flasher 2” in the priority table T2. Is determined to prioritize the ZPD process. In other words, when the control unit 60 determines that the low necessity flasher drive condition and the confirming stopper position detection operation execution condition are satisfied at the same time, the control unit 60 controls the on / off of the semiconductor switches 52 and 54, While the on / off control of the semiconductor switches 52 and 54 is being controlled, it is determined not to execute the ZPD process. Incidentally, when the “hazard” is established, it is unlikely that the control unit 60 is activated in a state where the supply voltage of the battery power source B is lower than a predetermined threshold value, and therefore, indicated as “−” in the priority table T2.

  In addition, when the above “turn” is established in the determination process of step S21, the control unit 60 performs the on / off switching control of the semiconductor switches 52 and 54 in the ZPD process as indicated by “flasher 3” in the priority table T2. To prioritize. In other words, when the control unit 60 determines that the misjudgment prevention flasher drive condition is satisfied, the established stopper position detection operation execution condition is a high necessity stopper regardless of whether the stopper position detection operation execution condition is satisfied or not. Even under the position detection operation execution condition, the semiconductor switches 52 and 54 are controlled to be turned on / off, and the ZPD process is determined not to be performed while the semiconductor switches 52 and 54 are turned on / off. Incidentally, when the above “turn” is established, since the possibility that the control unit 60 is activated in a state where the supply voltage of the battery power source B is lower than the predetermined threshold is low, it is indicated as “−” in the priority table T2.

  Further, when the “hazard” and the “ZPD” of the battery power supply B are established at the same time in the determination process of step S21, the control unit 60 simultaneously performs the “hazard” and the “Reset” of the ignition switch IG. If established, and if the “hazard” and the “ZPD” of the ignition switch IG are established at the same time, the ZPD processing is performed by the semiconductor switches 52 and 54 as shown as “ZPD” in the priority table T2. It is decided to prioritize on / off switching control. In other words, if the control unit 60 determines that the low necessity flasher driving condition and the high necessity stopper position detection operation execution condition are simultaneously satisfied, the control unit 60 executes the ZPD process and executes the ZPD process. In the meantime, it is decided not to switch the semiconductor switches 52 and 54 on and off.

  And in the judgment process of said step S21, when it determines with giving priority to blinking of the indicator 51, the control unit 60 transfers to the process of the following step S12, switching control of ON / OFF of the semiconductor switches 52 and 54, The determination process of the previous step S21 is executed again.

  On the other hand, when it is determined in the determination process of step S21 that the ZPD process is prioritized, the control unit 60 determines whether the ZPD flag stored in the memory 61 is set or reset as the determination process of step S13. By determining whether it has been performed, it is determined whether the ZPD processing has been executed. Here, when the ZPD flag is reset and it is not determined that the ZPD process has been executed (“No” in the determination process of step S13), the control unit 60 performs the ZPD process as the process of the subsequent step S14. Execute. On the other hand, when it is determined that the ZPD flag is set and the ZPD process has been executed, the control unit 60 proceeds to the determination process of the previous step S21 and executes the determination process of step S11 again.

  As described above, when the control unit 60 determines that the low necessity flasher drive condition and the high necessity stopper position detection operation execution condition are satisfied at the same time, the control unit 60 executes the ZPD process. During the execution, the on / off switching control of the semiconductor switches 52 and 54 is not executed. Therefore, ZPD processing can be executed with priority. On the other hand, if the control unit 60 determines that the low-necessity flasher driving condition and the confirming stopper position detection operation execution condition are satisfied at the same time, the control unit 60 switches the semiconductor switches 52 and 54 on and off, and controls these semiconductor switches. The ZPD process is not executed while the on / off switching of 52 and 54 is controlled. Therefore, it becomes possible to preferentially execute the on / off switching control of the semiconductor switches 52 and 54.

  The meter system 1 according to the present invention is not limited to the configuration exemplified in the above embodiment, and can be implemented with various modifications without departing from the gist of the present invention. . In other words, for example, the following embodiment can be implemented by appropriately changing the above embodiment.

  In the meter system 1 of the above embodiment, both the field windings 32 and 33 and both the flasher semiconductor switch 52 and the buzzer semiconductor switch 54 are arranged on the same substrate 40 and have the same control. The unit 60 is configured to execute the ZPD processing and the on / off switching control of both the flasher semiconductor switch 52 and the buzzer semiconductor switch 54, but is not limited thereto. Although both the field windings 32 and 33 and both the flasher semiconductor switch 52 and the buzzer semiconductor switch 54 are arranged on the same substrate 40, the control unit for performing the ZPD processing, the semiconductor switch 52, The control unit that performs both on / off switching control of 54 may be a separate control device, and the same control unit 60 controls on / off switching of both the ZPD processing and the flasher semiconductor switch 52 and the buzzer semiconductor switch 54. However, both the field windings 32 and 33 and the flasher semiconductor switch 52 and the buzzer semiconductor switch 54 may not be arranged on the same substrate.

  The field windings 32 and 33 and both the flasher semiconductor switch 52 and the buzzer semiconductor switch 54 are not limited to be arranged on the same substrate 40, and either the field windings 32 or 33 are used. And only one of the flasher semiconductor switch 52 and the buzzer semiconductor switch 54 may be arranged on the same substrate 40.

  The control unit 60 may be configured to execute at least one of the ZPD processing and the on / off switching control of both the flasher semiconductor switch 52 and the buzzer semiconductor switch 54.

DESCRIPTION OF SYMBOLS 1 ... Meter system, 1a ... Indicator instrument for vehicles, 10 ... Instrument board, 10a ... Display board, 20 ... Pointer, 30 ... Turning inner machine, 30a ... Inner machine main body, 32, 33 ... Field winding, 40 ... Substrate, 50 ... flasher function unit, 51 ... indicator (flasher), 52 ... flasher semiconductor switch, 53 ... buzzer, 54 ... buzzer semiconductor switch, 60 ... control unit (control device), 61 ... memory, 71 ... door sensor, 71 ... Vehicle speed sensor, G ... reduction gear mechanism, M ... step motor, S ... stopper mechanism, X ... zero return direction, Y ... zero release direction, .theta.0 ... zero point

Claims (7)

A pointer that indicates the vehicle state value according to the rotation position by rotating along a display surface of a scale plate that displays the vehicle state value;
A step motor that rotationally drives the pointer by applying a drive signal alternating according to the electrical angle to the field winding;
A stopper mechanism that stops the pointer that rotates in the zero return direction from a zero position that indicates a zero value of the vehicle state value to a stopper position that is within a predetermined range in the zero return direction;
Based on the establishment of a predetermined stopper position detection operation execution condition, an induced voltage generated in the field winding is detected while controlling the drive signal so that the pointer rotates in the return zero direction. Stopper position detection operation executing means for executing a stopper position detection operation for detecting that the pointer has stopped at the stopper position using the detected induced voltage, and a stopper position detected by executing the stopper position detection operation A drive control unit comprising: zero point setting means for setting an electrical angle corresponding to the zero point as a zero point; and application means for applying the drive signal based on the zero point set by the zero point setting means to the field winding; And a vehicle indicating instrument having
A flasher semiconductor switch,
A flasher that blinks when on / off of the flasher semiconductor switch is controlled to be switched;
It is determined whether or not a predetermined flasher driving condition based on a manual operation by a user is satisfied, and when it is determined that the flasher driving condition is satisfied, the flasher is operated in a manner corresponding to the flasher driving condition determined to be satisfied. A flasher on / off switching control unit for switching on / off of the flasher semiconductor switch for blinking, a meter system including a flasher function unit,
The flasher on / off switching control unit promptly controls the on / off of the flasher semiconductor switch as the flasher driving condition, and the misjudgment prevention flasher driving condition that is highly necessary to prevent the user from making a misjudgment. The necessity of switching control of on / off of the semiconductor switch has a low necessity flasher driving condition, and
The flasher semiconductor switch and the field winding are arranged close to each other,
Regardless of whether or not the stopper position detection operation execution condition is satisfied, when the flasher on / off switching control unit determines that the misjudgment prevention flasher driving condition is satisfied, the flasher semiconductor switch is controlled to switch on / off. The drive control unit does not execute the stopper position detection operation while the on / off control of the flasher semiconductor switch is controlled.
When the flasher on / off switching control unit determines that the low necessity flasher driving condition is satisfied, the flasher semiconductor switch is switched on / off while the stopper position detection operation is being performed by the drive control unit. A meter system characterized by not performing control. The meter system according to claim 1,
The drive control unit promptly executes the stopper position detection operation execution condition and the stopper position detection operation execution condition that is highly necessary to promptly execute the stopper position detection operation as the stopper position detection operation execution condition. A low-necessity confirmation stopper position detection operation execution condition,
When it is determined that the low necessity flasher driving condition and the high necessity stopper position detection operation execution condition are satisfied at the same time, the drive control unit executes the stopper position detection operation and switches the flasher on / off. The control unit does not perform on / off switching control of the flasher semiconductor switch while the stopper position detection operation is being performed by the drive control unit,
When it is determined that the low necessity flasher driving condition and the confirming stopper position detection operation execution condition are simultaneously satisfied, the flasher on / off switching control unit performs on / off switching control of the flasher semiconductor switch, and The drive control unit does not execute the stopper position detection operation while the on / off control of the flasher semiconductor switch is controlled. A pointer that indicates the vehicle state value according to the rotation position by rotating along a display surface of a scale plate that displays the vehicle state value;
A step motor that rotationally drives the pointer by applying a drive signal alternating according to the electrical angle to the field winding;
A stopper mechanism that stops the pointer that rotates in the zero return direction from a zero position that indicates a zero value of the vehicle state value to a stopper position that is within a predetermined range in the zero return direction;
Based on the establishment of a predetermined stopper position detection operation execution condition, an induced voltage generated in the field winding is detected while controlling the drive signal so that the pointer rotates in the return zero direction. Stopper position detection operation executing means for executing a stopper position detection operation for detecting that the pointer has stopped at the stopper position using the detected induced voltage, and a stopper position detected by executing the stopper position detection operation A drive control unit comprising: zero point setting means for setting an electrical angle corresponding to the zero point as a zero point; and application means for applying the drive signal based on the zero point set by the zero point setting means to the field winding; And a vehicle indicating instrument having
A flasher semiconductor switch,
A flasher that blinks when on / off of the flasher semiconductor switch is controlled to be switched;
It is determined whether or not a predetermined flasher driving condition based on a manual operation by a user is satisfied, and when it is determined that the flasher driving condition is satisfied, the flasher is operated in a manner corresponding to the flasher driving condition determined to be satisfied. A flasher on / off switching control unit for controlling on / off of the flasher semiconductor switch to blink
Buzzer semiconductor switch,
A buzzer that blows by turning on and off the buzzer semiconductor switch,
A buzzer on / off switching control unit for switching on / off of the buzzer semiconductor switch in conjunction with on / off of the flasher semiconductor switch, and a meter system comprising a flasher function unit,
The flasher on / off switching control unit, as the flasher driving condition, includes a misjudgment preventing flasher driving condition that is highly necessary to quickly switch on / off the flasher semiconductor switch and the buzzer semiconductor switch to prevent a user's misjudgment. The flasher semiconductor switch and the buzzer semiconductor switch are quickly controlled to switch on and off, and the necessity of preventing a user's misjudgment is low.
At least one of the flasher semiconductor switch and the buzzer semiconductor switch and the field winding are arranged in close proximity,
Regardless of whether the stopper position detection operation execution condition is met or not, the flasher on / off switching control unit and the buzzer on / off switching control unit determine that the misjudgment prevention flasher driving condition is met. On / off control of the switch and the buzzer semiconductor switch is controlled, and the drive control unit controls on / off of the semiconductor switch arranged in the state close to the field winding among the flasher semiconductor switch and the buzzer semiconductor switch. While the stopper position detection operation is not performed while
When the flasher on / off switching control unit and the buzzer on / off switching control unit determine that the low-necessity flasher driving condition is satisfied, the drive control unit performs the stopper position detection operation while executing the stopper position detection operation. A meter system that does not perform switching control of on / off of a semiconductor switch arranged in the state close to the field winding among the flasher semiconductor switch and the buzzer semiconductor switch. The meter system according to claim 3,
The drive control unit promptly executes the stopper position detection operation execution condition and the stopper position detection operation execution condition that is highly necessary to promptly execute the stopper position detection operation as the stopper position detection operation execution condition. A low-necessity confirmation stopper position detection operation execution condition,
When it is determined that the low necessity flasher driving condition and the high necessity stopper position detection operation execution condition are satisfied at the same time, the drive control unit executes the stopper position detection operation and switches the flasher on / off. The control unit and the buzzer on / off switching control unit are arranged in a state of being close to the field winding of the flasher semiconductor switch and the buzzer semiconductor switch while the stopper position detection operation is being executed by the drive control unit. On the other hand, the on / off control of the selected semiconductor switch is not controlled.
When it is determined that the low necessity flasher driving condition and the confirming stopper position detection operation execution condition are simultaneously satisfied, the flasher on / off switching control unit and the buzzer on / off switching control unit include the flasher semiconductor switch, The on / off control of the buzzer semiconductor switch is controlled, and the drive control unit is controlled to switch on / off of the semiconductor switch arranged close to the field winding among the flasher semiconductor switch and the buzzer semiconductor switch. The meter system is characterized in that the stopper position detection operation is not executed during the operation. In the meter system according to any one of claims 1 to 4,
The misjudgment prevention flasher driving condition includes a meter system including a command signal transmitted by wireless communication from a portable device that remotely controls a vehicle equipped with the meter system. In the meter system according to any one of claims 1 to 5,
The misjudgment prevention flasher driving condition includes that a combination lever of a vehicle equipped with the meter system is set at a turn lamp blinking position. In the meter system according to any one of claims 1 to 6,
The meter system characterized in that the low-necessity flasher driving condition includes that a hazard lamp switch of a vehicle on which the meter system is mounted is set to a hazard blinking position.

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