JP2013180684A - Parking support device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a parking support device dispensing with a special display device.SOLUTION: A parking support device includes a steering angle detector 4 detecting the steering angle of a vehicle; a target steering angle computing device 6 computing a target steering angle during parking operation; a parking operation-in-progress determining section 11 determining whether a parking operation is in progress, and a parking operation-in-progress display control section 12 controlling a left side turn signal indicator 21 and a right side turn signal indicator 22 based on the steering angle detected by the steering angle detector 4 and the target steering angle computed by the target steering angle computing device 6 when the parking operation-in-progress determining section 11 determines that the parking operation is in progress.

Description

  The present invention relates to a parking assist device including display means for displaying information indicating a steering direction and a steering amount when a host vehicle is parked.

  In the conventional parking assistance device, as shown in Patent Document 1, a symbol indicating a steering instruction for parking the host vehicle is displayed on a specially provided display device.

JP 2009-61938 A JP 2001-106115 A

  However, since such a parking assistance device requires a special display device, a new display device must be added, resulting in an increase in cost.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide a parking assistance device that does not require a new display device to be added.

  In order to achieve this object, an embodiment of the present invention provides a parking support apparatus including a display unit that displays information indicating a steering direction and a steering amount when the host vehicle is parked. An indicator that is provided on the meter panel and indicates a blinking state of the turn signal lamp, a steering angle detector that detects the steering angle of the vehicle, a parking operation determination unit that determines whether the parking operation is being performed, A parking operation display control unit that controls the indicator based on the steering angle detected by the steering angle detector when the parking operation determination unit determines that the parking operation is being performed. Features.

  According to an embodiment of the present invention, there is provided a parking support apparatus including display means for displaying information indicating a steering direction and a steering amount when the host vehicle is parked, wherein the display means is provided on a meter panel in a vehicle interior. And a turn signal lamp blinking indicator, a steering angle detector for detecting the steering angle of the vehicle, a target steering angle calculation device for calculating a target steering angle during parking operation, and whether the parking operation is in progress When the parking operation determination unit determines whether the parking operation is in progress, the steering angle detected by the steering angle detector and the target steering angle calculation device when the parking operation determination unit determines that the parking operation is in progress A display control unit during parking operation that controls the indicator based on a difference from the calculated target steering angle is provided.

  Moreover, the embodiment of the invention is characterized in that the display control unit during parking operation changes the blinking cycle of the indicator based on the steering angle.

  Moreover, the embodiment of the invention is characterized in that the display controller during parking operation changes the blinking duty ratio of the indicator based on the steering angle.

  In the parking assistance device according to the present invention, since the information indicating the steering direction and the steering amount is displayed using the indicator in the meter panel, the steering direction and the steering amount are indicated without adding a new display device. Information can be displayed, and information indicating the steering direction and the steering amount can be displayed in a size that is easy to visually recognize at a position where the driver can easily recognize.

FIG. 1 is a block diagram showing a parking assistance apparatus according to an embodiment of the present invention. FIG. 2 is a view showing a speedometer having a turn signal indicator of the parking assistance apparatus shown in FIG. FIG. 3 is a flowchart for explaining the operation of the parking assistance apparatus shown in FIG. FIG. 4 is a flowchart for explaining the operation of the parking assistance apparatus shown in FIG.

A parking assistance apparatus according to an embodiment of the present invention will be described with reference to FIG.
A parking assistance apparatus according to an embodiment of the present invention includes a vehicle speed sensor 1, a steering angle display switch 2, a mode changeover switch 3, a steering angle detector 4, a parking route calculation device 5, a turn signal switch 7, a vehicle body control ECU (electronic control unit) 10, and a left turn signal indicator 21 and a right turn signal indicator 22 which are indicators.

  The parking route calculation device 5 includes a target steering angle calculation device 6. The vehicle body control ECU 10 includes a parking operation determining unit 11, a parking operation display control unit 12, and a normal display control unit 13. The parking operation in-progress determination unit 11 includes an ignition switch (IGSW) on state determination unit 111, a vehicle speed determination unit 112, and an operation instruction state determination unit 113. The display control unit 12 during parking operation includes a display mode determination unit 121, a target angle setting unit 122, a calculated angle calculation unit 123, a calculated angle determination unit 124, and a blinking control unit 125.

  The vehicle speed sensor 1 detects the speed Vd of the host vehicle. The steering angle display switch 2 is a switch for switching between steering angle display and normal display. The steering angle display switch 2 is preferably a momentary switch that is turned on only while it is being pressed and is turned off when it is not being pressed. The mode changeover switch 3 has a current angle display mode for displaying the current steering angle on the left turn signal indicator 21 and the right turn signal indicator 22 and a target angle display mode for displaying the steering angle necessary for parking the host vehicle. Switch to switch. The steering angle detector 4 detects the steering angle θd of the host vehicle from the rotation angle of the steering wheel. When the steering wheel is rotated leftward, the steering angle θd is positive. The parking route calculation device 5 calculates a parking route for parking at the parking place from the current position of the host vehicle. The parking route calculation device 5 is well known. The target steering angle calculation device 6 calculates the target steering angle at the current position of the host vehicle, that is, the target steering angle θa during the parking operation, from the parking route for parking at the parking place from the current position of the host vehicle. The turn signal switch 7 is a switch for instructing the operation of the left turn signal lamp 23 and the right turn signal lamp 24.

  The vehicle body control ECU 10 receives signals from the vehicle speed sensor 1, the steering angle display switch 2, the mode changeover switch 3, the steering angle detector 4, the parking path calculation device 5, the turn signal switch 7, and the ignition switch 8, and the left turn signal The indicator 21, the right turn signal indicator 22, the left turn signal lamp 23, and the right turn signal lamp 24 are controlled. The vehicle body control ECU 10 is configured by a computer.

  The left turn signal indicator 21 and the right turn signal indicator 22 are usually indicators that indicate the blinking state of the left turn signal lamp 23 and the right turn signal lamp 24. The left turn signal indicator 21 and the right turn signal indicator 22 are provided in the speedometer as shown in FIG. That is, the left turn signal indicator 21 and the right turn signal indicator 22 are provided on a meter panel in the passenger compartment. The left turn signal lamp 23 and the right turn signal lamp 24 are provided outside the vehicle.

  Based on signals from the vehicle speed sensor 1, the steering angle display switch 2, and the ignition switch 8, the parking operation determining unit 11 determines whether or not the parking operation is being performed.

  The parking operation display control unit 12 determines that the parking operation determination unit 11 determines that the parking operation is being performed. The steering angle θd detected by the steering angle detector 4 and the target steering angle calculation device 6 calculate the target. Based on the steering angle θa, the left turn signal indicator 21 and the right turn signal indicator 22 are controlled. That is, the display control unit 12 during parking operation controls the left turn signal indicator 21 and the right turn signal indicator 22 based on at least the steering angle θd when the parking operation determination unit 11 determines that the parking operation is being performed, Display the parking operation display.

  The normal display control unit 13 normally displays the left turn signal indicator 21 and the right turn signal indicator 22 based on the operation of the turn signal switch 7 when the parking operation determining unit 11 determines that the parking operation is not being performed. To control. That is, the normal display control unit 13 controls the left turn signal indicator 21 and the right turn signal indicator 22 so that the left turn signal lamp 23 and the right turn signal lamp 24 blink.

  The ignition switch on state determination unit 111 determines whether or not the ignition switch 8 is on. The vehicle speed determination unit 112 determines whether or not the speed Vd detected by the vehicle speed sensor 1 is equal to or lower than a predetermined speed Vs. The predetermined speed Vs is, for example, 10 km / h. The operation instruction state determination unit 113 determines whether or not the operation instruction state is in effect. That is, the operation instruction state determination unit 113 determines that the steering angle display switch 2 is in the operation instruction state when the steering angle display switch 2 is turned on from the off state and returns to the off state in the initial state, and the steering angle display switch 2 is turned off in this state. When the steering angle display switch 2 is turned on from the off state and returned to the off state in this state, it is determined that it is in the operation instruction state. . Then, the operation instruction state determination unit 113 is in an initial state when the ignition switch 8 is turned off. When the steering angle display switch 2 is a momentary switch, the switch is turned off when not pressed. Therefore, when the ignition switch 8 is turned on, the initial state is established without operating the switch.

  The ignition switch on state determination unit 111 determines that the ignition switch 8 is on, the vehicle speed determination unit 112 determines that the speed Vd is equal to or less than the predetermined speed Vs, and the operation instruction state determination unit 113 operates. When it is determined that the vehicle is in a state, the parking operation determining unit 11 determines that the parking operation is being performed.

  The display mode determination unit 121 determines whether the current angle display mode or the target angle display mode is switched by the mode switch 3 when the parking operation determination unit 11 determines that the parking operation is being performed.

The target angle setting unit 122 sets the target angle to 0 degrees when the display mode determination unit 121 determines that the current angle display mode is set, and when the display mode determination unit 121 determines that the target angle display mode is set. The target angle is set to the target steering angle θa calculated by the target steering angle calculation device 6. The calculated angle calculation unit 123 calculates the calculated angle θc according to the following equation after the target angle setting unit 122 sets the target angle.
Calculated angle θc = steering angle θd−target angle

  The calculated angle determining unit 124 determines the magnitude of the calculated angle θc after the calculated angle calculating unit 123 calculates the calculated angle θc. That is, the calculated angle determination unit 124 first determines whether or not the calculated angle θc is substantially 0, for example, whether or not the absolute value of the calculated angle θc is 10 ° or less. When the calculated angle determining unit 124 determines that the calculated angle θc is not substantially 0, the calculated angle determining unit 124 determines whether or not the calculated angle θc is positive. When the calculated angle determination unit 124 determines that the calculated angle θc is positive, the calculated angle determination unit 124 determines whether the calculated angle θc is 360 ° or less. When the calculated angle determination unit 124 determines that the calculated angle θc is not positive, the calculated angle determination unit 124 determines whether the absolute value of the calculated angle θc is 360 ° or less.

  The blinking control unit 125 does not blink the left turn signal indicator 21 and the right turn signal indicator 22 when the calculated angle determination unit 124 determines that the calculated angle θc is substantially zero. Further, the blinking control unit 125 causes the left turn signal indicator 21 to blink when the calculated angle determination unit 124 determines that the calculated angle θc is positive and 360 ° or less. For example, the left turn signal indicator 21 blinks at a blinking period of 700 ms. When the calculated angle determination unit 124 determines that the calculated angle θc is positive and exceeds 360 °, the blinking control unit 125 causes the left turn signal indicator 21 to blink rapidly. For example, the left turn signal indicator 21 blinks at a blinking period of 340 ms. The blinking control unit 125 blinks the right turn signal indicator 22 when the calculated angle determination unit 124 determines that the calculated angle θc is negative and the absolute value of the calculated angle θc is 360 ° or less. For example, the right turn signal indicator 22 blinks at a blinking period of 700 ms. The blinking control unit 125 causes the right turn signal indicator 22 to blink rapidly when the calculated angle determination unit 124 determines that the calculated angle θc is negative and the absolute value of the calculated angle θc exceeds 360 °. For example, the right turn signal indicator 22 blinks at a blinking period of 340 ms.

Next, the operation of the parking assistance apparatus shown in FIG. 1 will be described with reference to FIG.
When the ignition switch on state determination unit 111 determines that the ignition switch 8 is on (step S1), the vehicle speed determination unit 112 determines whether or not the speed Vd detected by the vehicle speed sensor 1 is equal to or less than a predetermined speed Vs. (Step S2). When the vehicle speed determination unit 112 determines that the speed Vd is equal to or less than the predetermined speed Vs, the operation instruction state determination unit 113 determines whether or not it is in the operation instruction state (step S3).

  When the operation instruction state determination unit 113 determines that it is in the operation instruction state, that is, when the parking operation determination unit 11 determines that the parking operation is being performed, the parking operation display control unit 12 is detected by the steering angle detector 4. The left turn signal indicator 21 and the right turn signal indicator 22 are controlled based on the difference between the steered steering angle θd and the target steering angle θa calculated by the target steering angle calculation device 6 (step S4).

  Further, when the parking operation determination unit 11 determines that the parking operation is not being performed, that is, when the vehicle speed determination unit 112 determines that the speed Vd exceeds the predetermined speed Vs, or the operation instruction state determination unit 113 performs the operation instruction. When it is determined that the state is not in the state, the normal display control unit 13 controls the left turn signal indicator 21 and the right turn signal indicator 22 to perform normal display based on the operation of the turn signal switch 7 (step S5). That is, the normal display control unit 13 controls the left turn signal indicator 21 and the right turn signal indicator 22 so that the left turn signal lamp 23 and the right turn signal lamp 24 blink.

  For this reason, when the ignition switch 8 is on and the speed Vd is equal to or lower than the predetermined speed Vs and the driver presses the steering angle display switch 2 when starting the parking operation, the display control unit 12 during the parking operation is displayed. Controls the left turn signal indicator 21 and the right turn signal indicator 22. In addition, although the parking operation was performed, the parking operation was stopped and the normal traveling was started, and the speed Vd exceeded the predetermined speed Vs, or the parking operation was performed, but the driver stopped the parking operation. When the steering angle display switch 2 is pressed, the left turn signal indicator 21 and the right turn signal indicator 22 are controlled by the normal display control unit 13, and the left turn signal indicator 21 and the right turn signal indicator 22 are the left turn signal lamp 23 and the right side. The blinking state of the turn signal lamp 24 is shown.

Next, the operation of the display control unit 12 during parking operation will be described with reference to FIG.
When the parking operation determination unit 11 determines that the parking operation is being performed, the display mode determination unit 121 determines whether the current angle display mode or the target angle display mode is set (step S11). When the display mode determining unit 121 determines that the current angle display mode is set, the target angle setting unit 122 sets the target angle to 0 degrees (step S12), and the display mode determining unit 121 is in the target angle display mode. When it is determined that there is a target angle, the target angle setting unit 122 sets the target angle to the target steering angle θa (step S13). Next, the calculation angle calculation unit 123 calculates the calculation angle θc (step S14), and the calculation angle determination unit 124 determines the magnitude of the calculation angle θc (steps S15 to S18).

  When the calculated angle determination unit 124 determines that the calculated angle θc is approximately 0, the blinking control unit 125 does not cause the left turn signal indicator 21 and the right turn signal indicator 22 to blink (step S19). When the calculated angle determination unit 124 determines that the calculated angle θc is positive and 360 ° or less, the blinking control unit 125 causes the left turn signal indicator 21 to blink (step S20). When the calculated angle determining unit 124 determines that the calculated angle θc is positive and exceeds 360 °, the blinking control unit 125 causes the left turn signal indicator 21 to blink rapidly (step S21). When the calculated angle determination unit 124 determines that the calculated angle θc is negative and the absolute value of the calculated angle θc is 360 ° or less, the blinking control unit 125 causes the right turn signal indicator 22 to blink (step S22). . When the calculated angle determination unit 124 determines that the calculated angle θc is negative and the absolute value of the calculated angle θc exceeds 360 °, the blinking control unit 125 causes the right turn signal indicator 22 to blink quickly (step S23). In this manner, the parking operation display control unit 12 (flashing control unit 125) changes the flashing cycle of the left turn signal indicator 21 and the right turn signal indicator 22 according to the calculated angle θc.

  From the above, the left side turn signal indicator 21 and the right side turn signal indicator 22 do not flash when the mode change switch 3 is switched to the current angle display mode and the steering angle θd is substantially zero. When the steering angle θd is a value between approximately 0 ° and 360 °, the left turn signal indicator 21 blinks. Further, when the steering angle θd is a value from −360 ° to almost zero, the right turn signal indicator 22 blinks. On the other hand, when the steering angle θd exceeds 360 °, the left turn signal indicator 21 blinks rapidly. On the other hand, when the steering angle θd is less than −360 °, the right turn signal indicator 22 blinks rapidly. For this reason, the left turn signal indicator 21 blinks when the steering wheel is rotated to the left, and the right turn signal indicator 22 blinks when the steering wheel is rotated to the right, causing the steering wheel to rotate significantly. When left, the left turn signal indicator 21 and the right turn signal indicator 22 blink rapidly.

  On the other hand, when the mode is switched to the target angle display mode by the mode switch 3 and the calculated angle θc (steering angle θd−target steering angle θa) is substantially 0, that is, when the steering angle θd and the target steering angle θa are substantially equal. The left turn signal indicator 21 and the right turn signal indicator 22 do not flash. When the calculated angle θc is a value between approximately 0 and 360 °, the left turn signal indicator 21 blinks. For example, when the steering angle θd is −50 °, the target steering angle θa is −100 °, and the steering wheel has to be rotated 50 ° to the right, the calculated angle θc is 50 °, and the left turn signal indicator 21 Flashes. Further, when the calculated angle θc is a value between −360 ° and almost 0, the right turn signal indicator 22 blinks. For example, when the steering angle θd is 50 °, the target steering angle θa is 100 °, and the steering wheel must be rotated 50 ° to the left, the calculated angle θc is −50 °, and the right turn signal indicator 22 is Flashes. Further, when the calculated angle θc exceeds 360 °, the left turn signal indicator 21 blinks rapidly, and when the steering angle θd is less than −360 °, the right turn signal indicator 22 blinks quickly. That is, when the steering angle θd and the target steering angle θa are greatly different, the left turn signal indicator 21 and the right turn signal indicator 22 blink rapidly.

  In such a parking assist device, using the left turn signal indicator 21 and the right turn signal indicator 22 in the meter panel, information indicating the steering direction and the steering amount during the parking operation, that is, information indicating the steering angle θd, Since the information indicating the difference between the steering angle θd and the target steering angle θa is displayed, the information indicating the steering direction and the steering amount can be displayed without adding a new display device. Information indicating the steering direction and the steering amount can be displayed in a size that is easily visible at a position that is easy to perform.

  In addition, the display control unit 12 during parking operation changes the blinking cycle of the left turn signal indicator 21 and the right turn signal indicator 22 based on the steering angle θd and the difference between the steering angle θd and the target steering angle θa. The person can easily grasp information indicating the steering amount θd, information indicating the difference between the steering angle θd and the target steering angle θa, that is, information indicating the steering direction and the steering amount during the parking operation.

  In the above-described embodiment, the display control unit 12 during parking operation blinks the left turn signal indicator 21 and the right turn signal indicator 22 based on the steering angle θd and the difference between the steering angle θd and the target steering angle θa. Although the period is changed, the blinking duty ratio of the left turn signal indicator 21 and the right turn signal indicator 22 may be changed based on the steering angle θd and the difference between the steering angle θd and the target steering angle θa. Further, the display control unit 12 during the parking operation changes the blinking period and the blinking duty ratio of the left turn signal indicator 21 and the right turn signal indicator 22 based on the steering angle θd and the difference between the steering angle θd and the target steering angle θa. You may let them. For example, as in the above-described embodiment, the blinking cycle of the left turn signal indicator 21 and the right turn signal indicator 22 is changed according to the absolute value of the calculated angle θc, and the absolute value of the calculated angle θc is 360 ° or less. Sometimes, when the absolute value of the calculated angle θc is a value between approximately 0 and 180 °, the on duty ratio (lighting duty ratio) of blinking of the left turn signal indicator 21 and the right turn signal indicator 22 is set to 25%, When the absolute value of the calculated angle θc is a value between 180 ° and 360, the blinking on-duty ratio of the left turn signal indicator 21 and the right turn signal indicator 22 may be 50%. Also in these cases, the driver can easily grasp information indicating the steering amount θd, information indicating the difference between the steering angle θd and the target steering angle θa, that is, information indicating the steering direction and the steering amount during the parking operation. Can do.

  In the above-described embodiment, the display control unit 12 during parking operation blinks the left turn signal indicator 21 and the right turn signal indicator 22 based on the steering angle θd and the difference between the steering angle θd and the target steering angle θa. Although the cycle is changed, the display control unit 12 during the parking operation changes the display color of the left turn signal indicator 21 and the right turn signal indicator 22 based on the steering angle θd and the difference between the steering angle θd and the target steering angle θa. It may be changed. For example, a light color may be displayed when the absolute value of the calculated angle θc is small, and a dark color may be displayed when the absolute value of the calculated angle θc is large.

  In the above-described embodiment, the steering angle detector 4 that detects the steering angle θd from the rotation angle of the steering wheel is used. However, a steering angle detector that detects the steering angle θd from the steering of the tire may be used. .

  The scope of the present invention is not limited to the illustrated and described exemplary embodiments, but includes all embodiments that provide the same effects as those intended by the present invention. Further, the scope of the invention is not limited to the combinations of features of the invention defined by the claims, but may be defined by any desired combination of particular features among all the disclosed features. .

  DESCRIPTION OF SYMBOLS 1 ... Vehicle speed sensor, 2 ... Steering angle display switch, 3 ... Mode changeover switch, 4 ... Steering angle detector, 6 ... Target steering angle calculation device, 8 ... Ignition switch, 10 ... Body control ECU, 11 ... Judgment during parking operation , 12 ... Display control unit during parking operation, 13 ... Normal display control unit, 21 ... Left turn signal indicator, 22 ... Right turn signal indicator, 111 ... Ignition switch on state determination unit, 112 ... Vehicle speed determination unit, 113 ... Operation Instruction state determination unit, 121 ... display mode determination unit, 122 ... target angle setting unit, 123 ... calculated angle calculation unit, 124 ... calculated angle determination unit, 125 ... blinking control unit

Claims (4)

In the parking assistance apparatus provided with the display means for displaying the information indicating the steering direction and the steering amount when the host vehicle is parked,
The display means is an indicator that is provided on a meter panel in the passenger compartment and indicates a blinking state of the turn signal lamp,
A steering angle detector for detecting the steering angle of the vehicle;
A parking operation determining unit for determining whether or not the parking operation is in progress;
A parking operation display control unit that controls the indicator based on the steering angle detected by the steering angle detector when the parking operation determination unit determines that the parking operation is being performed. A parking assist device. In the parking assistance apparatus provided with the display means for displaying the information indicating the steering direction and the steering amount when the host vehicle is parked,
The display means is an indicator that is provided on a meter panel in the passenger compartment and indicates a blinking state of the turn signal lamp,
A steering angle detector for detecting the steering angle of the vehicle;
A target steering angle calculation device for calculating a target steering angle during parking operation;
A parking operation determining unit for determining whether or not the parking operation is in progress;
Based on the difference between the steering angle detected by the steering angle detector and the target steering angle calculated by the target steering angle calculation device when the parking operation determination unit determines that the parking operation is being performed. A parking assist device comprising: a display control unit during parking operation for controlling the indicator.   The parking assist device according to claim 1, wherein the display control unit during parking operation changes a blinking cycle of the indicator based on the steering angle.   The parking assist device according to claim 1 or 2, wherein the display control unit during the parking operation changes a blinking duty ratio of the indicator based on the steering angle.

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