KR101071666B1 - System and method for guiding parking of vehicle - Google Patents

System and method for guiding parking of vehicle Download PDF

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Publication number
KR101071666B1
KR101071666B1 KR1020100018537A KR20100018537A KR101071666B1 KR 101071666 B1 KR101071666 B1 KR 101071666B1 KR 1020100018537 A KR1020100018537 A KR 1020100018537A KR 20100018537 A KR20100018537 A KR 20100018537A KR 101071666 B1 KR101071666 B1 KR 101071666B1
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South Korea
Prior art keywords
rotation angle
unit
angle information
sensor
parking guidance
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KR1020100018537A
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Korean (ko)
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KR20110099483A (en
Inventor
여창은
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(주) 엔네비솔루션
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Priority to KR1020100018537A priority Critical patent/KR101071666B1/en
Priority to PCT/KR2011/000760 priority patent/WO2011108811A2/en
Publication of KR20110099483A publication Critical patent/KR20110099483A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D15/00—Steering not otherwise provided for
    • B62D15/02—Steering position indicators ; Steering position determination; Steering aids
    • B62D15/027—Parking aids, e.g. instruction means
    • B62D15/0275—Parking aids, e.g. instruction means by overlaying a vehicle path based on present steering angle over an image without processing that image
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R2011/0001—Arrangements for holding or mounting articles, not otherwise provided for characterised by position
    • B60R2011/0003—Arrangements for holding or mounting articles, not otherwise provided for characterised by position inside the vehicle
    • B60R2011/001—Vehicle control means, e.g. steering-wheel or column
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R2011/0042—Arrangements for holding or mounting articles, not otherwise provided for characterised by mounting means
    • B60R2011/0049—Arrangements for holding or mounting articles, not otherwise provided for characterised by mounting means for non integrated articles
    • B60R2011/005—Connection with the vehicle part
    • B60R2011/0063—Connection with the vehicle part using adhesive means, e.g. hook and loop fasteners

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Traffic Control Systems (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)

Abstract

The present invention discloses a parking line guidance system and method. The present invention can be installed by simply attaching the sensor module for detecting the rotation of the handle to the handle. In addition, the sensor module installed on the steering wheel always detects the rotation of the steering wheel regardless of whether the vehicle is driven or not, and transmits the rotation angle information of the steering wheel to the parking induction module installed in the vehicle during the backward parking of the vehicle. By reading the parking guidance line information stored in advance so as to indicate the expected moving path of the vehicle corresponding to the rotation angle information of the steering wheel and displaying it together with the rear image, the driver can rearward the path in which the car actually moves according to the current steering wheel position. It can be parked easily because you can see while watching the video. In addition, the sensor module generates the rotation angle information in real time and transmits it to the parking guidance module, and the parking guidance module displays the parking guidance line corresponding to the rotation angle information in real time, so that the user moves in real time according to the rotation of the steering wheel. Parking can be easily performed while looking at the parking line.

Figure R1020100018537

Description

Parking guidance system and method using rotation angle sensor {System and method for guiding parking of vehicle}

The present invention relates to a parking guidance system and method, and more particularly to a parking guidance system and method using a rotation angle sensor.

Recently, various electronic application technologies have been combined with automobiles in order to improve the convenience of motorists. A representative example of these will be a rear camera for guiding rear parking of a vehicle.

The rear camera is installed at the rear of the car and is operated when the reverse gear is set to output an image of the rear of the vehicle to a display device installed in the driver's seat. Being able to grasp, it becomes an essential device necessary for a driver who lacks parking ability.

However, the conventional rear camera device has only a problem of not only providing a rear image of the vehicle and providing the driver to the driver, but also providing additional information necessary for parking. In order to improve this, the proposed rear camera system displays a traveling path of the vehicle as a straight line having a trapezoidal shape as shown in FIG. 1.

However, as shown in FIG. 1, the conventional improved rear camera system simply displays the predicted path of the vehicle when the vehicle moves straight by only a straight line, and displays the predicted path of the vehicle when the vehicle reverses by a curve. Since it does not provide a significant difference with the actual movement path of the vehicle when parking, it does not help much for parking except for showing the image of the rear of the vehicle.

In addition, since the conventional rear camera system is installed and set according to a vehicle from a manufacturer of a vehicle, there is a problem in that it is practically very difficult to install the rear camera system additionally in a vehicle in which the rear camera system is not previously installed.

In order to improve this problem, the applicant has installed a sensor that can detect the rotation of the handle on the handle shaft as shown in FIG. In order to be installed on the shaft of the vehicle to be installed in the production process of the vehicle, in addition to the existing vehicle, the inconvenience of having to go to the vehicle repair shop to request the installation and paying a problem is difficult to actually commercialize.

In particular, depending on the vehicle, the installation of the sensor may not be possible at all, and there may be a problem in that a malfunction occurs due to the incorrect installation of the sensor according to the ability of the person installing the sensor in the vehicle repair shop.

The problem to be solved by the present invention is a parking guidance system that the user can easily install the sensor, and can display a parking guidance line indicating the path that the vehicle actually moves in accordance with the rotation of the handle detected by the sensor on the display installed in the vehicle And a method.

Parking guidance system according to a preferred embodiment of the present invention for solving the above problems is installed in the handle of the vehicle sensor module for generating and transmitting the rotation angle information of the handle; And a parking guidance module receiving the rotation angle information and displaying a parking guidance line indicating an expected movement path of the vehicle corresponding to the rotation angle information so as to overlap the rear image input from the rear camera.

In addition, the sensor module, the first power supply for supplying power to the sensor module; A sensor unit configured to output coordinate values of the sensor module moving as the handle rotates; A rotation angle information generator configured to calculate a rotation angle of the handle using the coordinate value and output the rotation angle information; And a first communication unit configured to wirelessly transmit the rotation angle information.

The rotation angle information generator may generate rotation angle information in units of preset angles.

The sensor module may further include a sensor DB which stores in advance a rotation angle corresponding to the coordinate value output from the sensor unit and sequentially stores rotation angle information generated by the rotation angle information generator. Featuring a parking guidance system.

In addition, the rotation angle information generation unit, the rotation angle conversion unit for outputting the rotation angle data by converting the coordinate value output from the sensor unit to the sensor DB to the rotation angle; And determining the rotation angle data by a preset number unit, and determining whether to generate the rotation angle according to a ratio included in the preset rotation angle range of the rotation angle data, and setting the rotation angle by a preset rotation angle unit. It may further include a rotation angle generating unit for outputting.

The rotation angle information generation unit may further include a rotation angle coding unit configured to convert the rotation angle input from the rotation angle generation unit into a previously allocated code and output the rotation angle information to the sensor DB and the first communication unit as the rotation angle information. can do.

In addition, the rotation angle coding unit reads the rotation angle information stored in the sensor DB, and compares the rotation angle to be currently coded with the rotation angle information sequentially stored in the sensor DB to rotate the rotation angle only when a preset continuity is maintained. The rotation angle information can be generated by coding.

In addition, the rotation angle coding unit reads the rotation angle information stored in the sensor DB, the rotation angle to be currently encoded is compared with the rotation angle information sequentially stored in the sensor DB, but the preset continuity is maintained, one unit If the rotation angle information is missing, the missing unit rotation angle may be coded and output to the sensor DB and the first wireless communication unit, and the current rotation angle to be coded may be coded and output to the sensor DB and the first wireless communication unit. have.

In addition, the first power supply unit is implemented as a rechargeable secondary battery, the sensor module further comprises a wireless charging unit for supplying a charging current to the first power supply unit, the wireless charging unit is fixed to the vehicle cigarette jack of the vehicle An electromagnetic field generator for receiving power from and generating an electromagnetic field; And a charging current generating unit installed below the electromagnetic field generating unit to generate a charging current using the induced electromotive force generated by the electromagnetic field and output the charging current to the first power supply unit to charge the first power supply unit.

The parking guidance module may include: a vehicle DB configured to store parking guidance line information indicating an expected movement route of the vehicle corresponding to the rotation angle information according to the type of vehicle; A second communication unit for transmitting a rotation angle information request signal to the sensor module and receiving rotation angle information wirelessly from the sensor module; A control unit for outputting the rotation angle information request signal to the second communication unit when a reverse gear is input, and reading and outputting parking guidance line information corresponding to the rotation angle information input from the second communication unit from the vehicle DB; And a display unit configured to display a rear image input from the rear camera when the reverse gear is input, and to display parking guidance line information input from the controller to overlap the rear image.

On the other hand, the parking guidance method according to a preferred embodiment of the present invention for solving the above problems, (a) to install the sensor module in the center of the handle, the handle is centered and initialized to input the reference coordinate value of the handle step; (b) generating, by the sensor module, coordinate values of the sensor module that change as the handle moves, generating and storing rotation angle information of the steering wheel using the coordinate values, and transmitting them to the parking guidance module installed in the vehicle ; And (c) the parking guidance module outputting a parking guidance line indicating an expected movement path of the vehicle corresponding to the rotation angle information together with the rear image input from the rear camera.

In addition, in step (b), the rotation angle information may be generated in a predetermined angle unit.

In addition, the step (b), (b1) converting the coordinate value of the sensor module to the rotation angle of the handle corresponding to the coordinate value; (b2) outputting a rotation angle by determining whether the rotation angle is included in a range of unit rotation angles output as rotation angle information according to the preset angle unit; And (b3) when the rotation angle is within a range of a unit rotation angle, storing the unit rotation angle including the rotation angle as rotation angle information and transmitting the rotation angle information to the parking guidance module.

In addition, the step (b3) reads the previously stored rotation angle information from the sensor DB that sequentially stores the rotation angle information, and compared with the rotation angle information to be stored currently, the rotation angle when the continuity of rotation is maintained Information may be stored in the sensor DB and transmitted to the parking guidance module.

Also, in the step (b3), if the rotation angle to be stored is maintained in the continuity of rotation but one unit rotation angle information is missing, the missing unit rotation angle is first stored in the sensor DB as the rotation angle information. The rotation angle to be stored may be stored in the sensor DB as rotation angle information.

In addition, in step (b3), the rotation angle information may be transmitted to the parking guidance module only when the rotation angle information request signal is received from the parking guidance module.

In addition, in step (b3), the rotation angle information may be coded and stored and transmitted to the parking guidance module.

Also, in the step (b2), the rotation angle data converted from the coordinate value may be determined in a preset number unit, and the rotation angle data may be determined according to a ratio of the rotation angle data included in the unit rotation angle range. To output the rotation angle.

Further, in the step (b), the parking induction module transmits a rotation angle information request signal to the sensor module when the reverse gear is set, and the sensor module sends the rotation angle information when the rotation angle information request signal is received. And transmitting to the parking guidance module, wherein the step (c) reads the parking guidance line information corresponding to the rotation angle information from the vehicle DB storing the parking guidance line information corresponding to the rotation angle information according to the type of vehicle. When the vehicle is turned off or the reverse gear is released, a sleep mode signal for requesting transmission of rotation angle information may be transmitted to the sensor module.

The present invention can be installed by simply attaching the sensor module for detecting the rotation of the handle to the handle.

In addition, the sensor module installed on the steering wheel always detects the rotation of the steering wheel regardless of whether the vehicle is driven or not, and transmits the rotation angle information of the steering wheel to the parking induction module installed in the vehicle during the backward parking of the vehicle. By reading the parking guidance line information stored in advance so as to indicate the expected moving path of the vehicle corresponding to the rotation angle information of the steering wheel and displaying it together with the rear image, the driver can rearward the path in which the car actually moves according to the current steering wheel position. It can be parked easily because you can see while watching the video.

In addition, the sensor module generates the rotation angle information in real time and transmits it to the parking guidance module, and the parking guidance module displays the parking guidance line corresponding to the rotation angle information in real time, so that the user moves in real time according to the rotation of the steering wheel. Parking can be easily performed while looking at the parking line.

1 is a diagram illustrating an example in which a parking guidance line is displayed on a rear camera image according to the related art.
2 is a diagram illustrating an example of a method of installing a sensor for detecting a rotation of a steering wheel on a steering shaft of a vehicle.
3 is a block diagram showing the overall configuration of a parking guidance system according to a preferred embodiment of the present invention.
4A to 4D are diagrams showing an installation example of a sensor module according to a preferred embodiment of the present invention.
5 is a diagram illustrating an example of generating a unit rotation angle when the user rotates the handle to the right in the preferred embodiment of the present invention.
6A and 6B illustrate an example in which a rear image and a parking guidance line are displayed on a display unit.
7 and 8 are flowcharts illustrating a parking guidance method according to a preferred embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

3 is a block diagram showing the overall configuration of a parking guidance system according to a preferred embodiment of the present invention. Referring to FIG. 3, the parking guidance system according to the preferred embodiment of the present invention includes a sensor module 300 and a parking guidance module 400.

The sensor module 300 is installed on the steering wheel of the vehicle to detect the rotation angle of the steering wheel, and transmits information (rotation angle information) about the rotation angle of the steering wheel wirelessly to the parking guidance module 400, the parking guidance module 400 ) Displays the parking guidance line representing the moving path of the vehicle, which corresponds to the rotation angle information, with the rear image input from the rear camera by using the rotation angle information of the steering wheel received from the sensor module 300.

Referring to the sensor module 300, the sensor module 300 includes a first power supply unit 310, a sensor unit 320, a rotation angle information generator 330, a sensor DB 340, and a first communication unit 350. ), And the rotation angle information generator 330 includes a rotation angle converter 332, a rotation angle generator 334, and a rotation angle coding unit 336.

The sensor module 300 is attached to the handle of the vehicle, as shown in FIG. 4A. Although the method of installing the sensor module 300 in a vehicle can be variously applied, a preferred embodiment of the present invention is a method or a screw for attaching the sensor module holder 500 to the upper part of the vehicle handle using an adhesive 600. 700 is installed by screwing, and the sensor module 300 is installed by inserting the sensor module 300 into the sensor module holder 500 where the installation is completed.

Referring to the functions of the components of the sensor module 300, first, the first power supply unit 310 is implemented as a primary battery or a rechargeable secondary battery to supply power to the components inside the sensor module 300. . In a preferred embodiment of the present invention, the first power supply unit 310 is implemented as a secondary battery, and the charging method may be charged using a cigarette jack in a vehicle, or may be charged using a wireless charging method as described below. The wireless charging method will be described later.

The sensor unit 320 generates and outputs a coordinate value in which the sensor module 300 installed in the handle moves as the handle rotates. The sensor unit 320 is implemented by combining a single sensor or a plurality of sensors currently commercialized such as a gyro sensor, an acceleration sensor, and a gravity sensor. In particular, the sensor unit 320 generates coordinate values of the sensor module 300 installed in the handle at regular time intervals. To this end, in the preferred embodiment of the present invention, the sensor unit 320 is implemented using two biaxial gyro sensors to generate three-dimensional coordinate values by using one axis in common, but it is also possible to use a three-axis gyro sensor. Of course.

The coordinate value output from the sensor unit 320 is a coordinate value of the sensor module 300 in a strict sense, but since the sensor module 300 is fixedly installed on the handle of the vehicle, the coordinate value of the sensor module 300 is the handle reference point. Represents the coordinate value of. Therefore, hereinafter, the coordinate value is used as the same meaning as the coordinate value of the sensor module 300 and the coordinate value (coordinate value of the handle) of the reference point of the handle.

The rotation angle information generator 330 receives coordinate values of the sensor module 300 input from the sensor unit 320, generates rotation angle information of a corresponding handle, and continuously stores the information in the sensor DB 340. When the rotation angle information request signal is received from the parking induction module 400, the rotation angle information of the steering wheel is output to the sensor DB 340 and simultaneously to the first communication unit 350, and the first communication unit 350 is Bluetooth or The rotation angle information is transmitted to the parking guidance module 400 by a short range wireless communication method such as Zigbee.

The sensor DB 340 stores the rotation angle corresponding to the coordinate value output from the sensor unit 320 in advance, stores a code corresponding to the rotation angle used in the rotation angle coding unit 336, and rotates the rotation angle coding. The rotation angle information expressed by the code output from the unit 336 is sequentially stored.

Looking at the function of the rotation angle information generation unit 330 in detail, the rotation angle conversion unit 332 inquires the coordinate value input from the sensor unit 320 to the sensor DB 340 to convert the rotation angle of the handle to output do.

The rotation angle generator 334 determines the rotation angle data input from the rotation angle converter 332 in a preset number unit, and in advance according to a ratio in which the rotation angle data is included in a preset unit rotation angle range. It is determined whether to generate the rotation angle in the unit of the set angle, and generates the rotation angle in a predetermined angle unit (for example, 10 degree unit, 30 degree unit, 45 degree unit, etc.).

The user moves the steering wheel several times from side to side during the parking process. At this time, there is a handle movement in a large direction, but also occurs with a fine movement of the handle. In addition, external environmental noise signals generated during the measurement process may slightly change the measurement result.

Generating parking guidance lines by calculating these fine handle movements in real time results in computational load. In addition, since the rotation angle of the wheels is considerably smaller than the actual rotation angle of the steering wheel, generating the parking guidance line corresponding to the fine movement of the steering wheel may cause the parking guidance line to move very quickly and finely and confuse the user.

Therefore, the present invention generates the rotation angle information only in a predefined rotation angle unit that is meaningful to the generation of the parking line and transmits to the parking guidance module 400. To this end, the rotation angle generation unit 334 breaks the rotation angle data input from the rotation angle conversion unit 332 into a predetermined number unit (10 units in the preferred embodiment of the present invention), thereby defining unit rotation angles previously defined. Of which unit rotation angle range is distributed, and when rotation angle data of a predetermined ratio (60% in a preferred embodiment of the present invention) is in the unit rotation angle range, the corresponding rotation angle data is included in the unit rotation angle range. Is considered to belong to

In the preferred embodiment of the present invention, 45 degrees are set in units of rotation angle based on 0 degrees, and the rotation angle range is set at 5 degrees of unit rotation angle. That is, when the rotation angle unit is 45 degrees, the rotation angles generated are 0 degrees, 45 degrees, 90 degrees, 135 degrees, 180 degrees, 225 degrees, 270 degrees, 315 degrees, 360 degrees, 405 degrees, 450 degrees, 495 Degrees and 540 degrees (these rotation angles are referred to as unit rotation angles), and the rotation angle included in the range of 5 degrees with respect to the output unit rotation angle is regarded as being moved by the unit rotation angle. However, the unit rotation angle can be set in various angle units (10 degrees, 30 degrees, etc.) other than this, and the present invention distinguishes the left and right directions.

5 is a diagram illustrating an example of generating a unit rotation angle when the user rotates the handle to the right in the preferred embodiment of the present invention. Referring to FIG. 5, six rotation angles input from the rotation angle conversion unit 332 are located within a rotation angle range of 45 degrees, which is a unit rotation angle, and four rotation angles are positioned outside the rotation angle range. Recognized as suitable data to be represented, the rotation angle generation unit 334 outputs the data to code 45 degrees to the rotation angle coding unit 336.

Since only four data are located within the range of 90 degrees of the unit rotation angle and six data are located outside the range of the unit rotation angle, the corresponding 10 rotation angle data are discarded.

On the other hand, the rotation angle generation unit 334 receives the next 10 rotation angle data to investigate the rotation angle, as shown in Figure 5, four data are located outside the unit rotation angle range of 135 degrees, but the unit rotation angle range Since 6 are located within the handle, the handle is recognized to be rotated by 135 degrees, and outputted so as to code 135 degrees to the rotation angle coding unit 336.

The rotation angle coding unit 336 converts the rotation angle input from the rotation angle generation unit 334 into a predetermined code, and outputs and stores the rotation angle information to the sensor DB 340. In addition, when the rotation angle information request signal is received from the parking induction module 400, the rotation angle information is output to the sensor DB 340 and to the first communication unit 350. At this time, the rotation angle information to be coded is shown in Table 1 below.

Figure 112010013282630-pat00001

Meanwhile, the rotation angle coding unit 336 reads previously coded rotation angles stored in the sensor DB 340 before coding and outputting the rotation angle to the first communication unit 350 so that the rotation angles are in a continuous order. The rotation angle information coded to the first communication unit 350 is output only when the continuity is maintained.

For example, immediately after the rotation angle coding unit 336 codes the 0 degree and the left 45 degree rotation angles, when the right 135 degrees should be coded as the rotation angle information and outputted, three unit rotation angles may be used while the rotation direction is reversed. (0 degrees, 45 degrees, 90 degrees) is skipped, so the rotation angle is not continuous. That is, it is physically impossible for the user to rotate the handle 45 degrees from 0 degrees to the left 45 degrees and to rotate the 135 degrees to the right in a short time when the sensor unit 320 outputs 10 or 20 sensor values. Dispose of as data due to errors. Whether the rotation angle is maintained in continuity may vary depending on the conditions set in advance. For example, when the directions of rotation are the same and only one unit rotation angle is missing in the middle (the rotation of 0 degrees and 45 degrees to the right) After each information is generated, only 90 degrees are missing, and when the rotation angle information of 135 degrees is generated to the right), the continuity can be set, and the rotation direction is reversed or two or more unit rotation angles are missing. In this case, it can be set that continuity is not maintained.

On the other hand, when the continuity of the rotation angle data to be coded is maintained but a part is disconnected, the rotation angle coding unit 336 compensates the rotation angle in the middle to perform coding. For example, in the example shown in FIG. 5, if 0 degrees and 45 degrees are coded as the rotation angle information, then 90 degrees are not coded and 135 degrees should be coded, this is because 90 degrees due to a data error or in the corresponding section. Determines that a malfunction occurs by rotating the handle too quickly, and the rotation angle coding unit 336 codes 90 degrees before coding 135 degrees, and then codes 135 degrees to correct the continuity of the handle rotation angle. .

However, the condition in which the continuity is compensated for must be precisely set in advance, and according to a preferred embodiment of the present invention, the previous two rotation angles and one rotation angle after the reference rotation angle are the same rotation based on the missing unit rotation angle. Perform rotation angle correction when indicating direction.

Meanwhile, the rotation angle information output from the rotation angle coding unit 336 is sequentially stored in the sensor DB 340, and is wirelessly transmitted to the parking induction module 400 through the first communication unit 350.

Meanwhile, in the above-described embodiment of the present invention, the first power unit 310 has been described as being charged through the cigar jack installed in the vehicle. In this case, the user inserts the cigar jack into the first power unit 310 and removes it. Inconvenience to be plugged back into the second power supply unit 410 exists, and there is inconvenience in that the handle cannot move because the wire is twisted during charging by wire. In order to eliminate this inconvenience, as shown in FIG. 4B, a wireless charging unit 360 may be further installed.

The wireless charging unit 360 is fixedly installed in the vehicle and installed under the electromagnetic field generating unit 364 and the sensor module 300 to generate the electromagnetic field, and uses the induced electromotive force generated by the electromagnetic field generated by the electromagnetic field generating unit 364. To generate a charging current and output the charging current to the first power supply unit 310.

The electromagnetic field generating unit 364 and the charging current generating unit 362 may generate a charging current by coinciding with each other when the handle is 0 degrees or 360 degrees. In general, charging is performed while driving on a road in a straight line.

The configuration and function of the sensor module 300 have been described so far. It should be noted that, as described above, since the sensor module 300 is continuously charged wirelessly or through the cigar jack while driving, the rotation angle information of the steering wheel should always be stored regardless of whether the vehicle power is applied. That is, while the vehicle operates as a secondary battery even after the ignition is turned off, the rotation angle of the steering wheel rotated by the user moving the steering wheel after the ignition is turned off must be stored. Otherwise, if the user rotates the handle after the start is turned off and the start is turned on again, an error occurs because the steering angle of the handle is calculated based on the position of the handle immediately before the start is turned off.

Hereinafter, the configuration and configuration of the parking guidance module 400 will be described.

The parking guidance module 400 includes a display unit 420, a control unit 430, a second communication unit 450, a vehicle DB 440, and a second power supply unit 410.

The display unit 420 receives the rear image from the rear camera and displays the rear image to the user when the user puts the reverse gear into the vehicle for parking. In addition, the parking guidance line input from the controller 430 overlaps the rear camera image and outputs the same.

The second power supply unit 410 is implemented as a primary battery or a rechargeable secondary battery to supply power to the components of the parking induction module 400. In a preferred embodiment of the present invention, the second power supply unit 410 is composed of a secondary battery which is connected to the cigar jack and charged.

The second communication unit 450 receives the rotation angle information request signal from the control unit 430, transmits the rotation angle information request signal to the sensor module 300, receives the rotation angle information wirelessly from the first communication unit 350, and outputs the rotation angle information to the control unit 430. do. In addition, when the start of the vehicle is turned off or the reverse gear is released, the second communication unit 450 receives the sleep mode signal from the controller 430 and transmits it to the sensor module 300.

The vehicle DB 440 stores information of the vehicle. The vehicle information stored in the vehicle DB 440 basically stores information about the size of the vehicle, such as the vehicle width, the distance between the axles, the length of the vehicle, and the like, and the parking guidance line information corresponding to the rotation angle information according to the vehicle type. Save it. In this case, the parking guidance line information may be stored as an image, may be coordinate information of the points constituting the parking guidance line displayed on the display, or may be vector information for displaying the parking guidance line.

Depending on the type of vehicle, even if the handle is rotated by the same rotation angle, the movement path of the vehicle is different. This is because the size of the vehicle (that is, the distance between the width of the vehicle and the axle) is different. In addition, since the positions at which the rear cameras are installed are different from each other according to the type of vehicle, when the rear image is displayed on the display unit 420, the perspective of the displayed image is also changed. Therefore, the vehicle DB 440 must store the parking guidance line information generated to correspond to the rear image and the perspective according to the type of vehicle. The parking guidance line information may be generated by the manufacturer of the vehicle or the manufacturer manufacturing the parking guidance system of the present invention and stored in the vehicle DB 440.

The controller 430 outputs a rotation angle information request signal to the second communication unit 450 when the reverse gear is input, requests the rotation angle information to the sensor module 300, and when the rotation angle information is received, the second communication unit 450. Inquiring the rotation angle information of the steering wheel input from the vehicle to the vehicle DB 440, the parking guidance line information corresponding to the rotation angle is read and output to the display unit 420 to display. In this case, when the parking guidance line information is an image, the read image may be output to the display unit 420 as it is, and in the case of coordinate values or vector information, image processing may be performed and output to the display unit 420.

6A and 6B illustrate an example in which a rear image and a parking guidance line (indicated by a dotted line) are displayed on the display unit 420. Referring to Figure 6, unlike the prior art, the parking line is displayed as a curve to correspond to the rotation angle of the handle, it can be seen that the distance between the parking induction line is narrowed toward the top from the bottom of the screen to the perspective.

In addition, as shown in Figure 6a, when the handle is rotated to the left, when the handle is rotated to the right, the sensor module 300 generates the rotation angle information in real time to transmit to the parking guidance module 400, The parking guidance module 400 generates a parking guidance line corresponding to the rotation angle information received in real time and displays a parking guidance line indicating an expected movement path of a vehicle closer to a straight line than that of FIG. 6A, as shown in FIG. 6B. .

So far, a parking guidance system according to a preferred embodiment of the present invention has been described.

Hereinafter, a parking induction method performed in a parking guidance system according to a preferred embodiment of the present invention will be described with reference to FIGS. 7 and 8 illustrating a flowchart illustrating a parking guidance method according to a preferred embodiment of the present invention.

When the user purchases the parking guidance system according to the present invention, the user installs the sensor module 300 to the handle and connects the cigar jack to perform charging (S700), the parking guidance module 400 is installed in the vehicle and the rear camera Is connected to the display unit 420, and after the charging of the sensor module 300 is completed, the cigarette is connected to the parking induction module 400 to charge the parking induction module 400 (S800).

Thereafter, the user performs the reset by pressing the reset button installed in the sensor module 300 with the handle in the center for initializing the sensor module 300 (S710). When the reset is performed, the sensor unit 320 displays the current coordinates. Outputs a value, and the rotation angle information generator 330 inputs the coordinate value first input at the time of reset as a reference coordinate value (reference coordinate value of the sensor module) of the handle and is stored in the sensor DB 340.

After the reference coordinate value is input, each time the handle moves, the sensor unit 320 outputs the coordinate value, and as described above with reference to FIG. 5, the rotation angle information generation unit 330 is the sensor unit 320. The coordinate value inputted from the apparatus is converted into a corresponding rotation angle (S720), and the rotation angle is examined to be included in the unit rotation angle range (S730), and if it is not included in the unit rotation angle range, the data is discarded (S750).

When the rotation angle is included in the unit rotation angle range, the rotation angle information generator 330 reads previous rotation angle information stored in the sensor DB 340 to compare the currently generated rotation angle with the previous rotation angles and maintain continuity. In operation S740, if the continuity is not maintained, the rotation angle information data is discarded (S750). The method of determining whether to maintain continuity is as described above.

If the continuity of the rotation angle information is maintained, it is checked whether or not correction of the rotation angle information is necessary (S760). If correction is necessary, the unit rotation angle information is corrected and coded (S762). In this case, the correction of the rotation angle information is a case where the continuity of the rotation angle information is maintained as described above, but the unit rotation angle is missing in the middle.

Thereafter, the current unit rotation angle is encoded as the rotation angle information and stored in the sensor DB 340 (S770).

After the rotation angle information is stored, the sensor module 300 checks whether the parking guidance module 400 requests the rotation angle information (S780), and when the sensor module 300 requests the rotation angle information, that is, the vehicle If the reverse gear is set in the rotation angle information is transmitted to the parking induction module 400 wirelessly (S790).

On the other hand, the parking guidance module 400 is activated in the state that the start-up, and checks whether the reverse gear is set (S810). Whether or not the reverse gear is set can be easily determined from whether an image signal is input from the rear camera.

When the reverse gear is set, the rear image input from the rear camera is displayed on the display unit 420 (S820), and the rotation angle information request signal is wirelessly transmitted to the sensor module 300 (S830).

When receiving the rotation angle information from the sensor module 300, the parking guidance module 400 reads the parking guidance line information corresponding to the rotation angle information from the vehicle DB (S840), the image processing the parking guidance line information to guide the parking The line is displayed together with the rear camera image (S845).

On the other hand, during the process of displaying the parking guidance line, the parking guidance module 400 continuously monitors whether the start is turned off or the reverse gear is released (S850), when the start is turned off or the reverse gear is released, The sleep mode signal for requesting transmission of the rotation angle information is transmitted to the sensor module 300 (S860).

The sensor module 300 receiving the sleep mode signal stores the generated rotation angle information only in the sensor DB 340 until the rotation angle request signal is received.

So far, a parking guidance system and method according to a preferred embodiment of the present invention have been described. Various modifications may be derived to the above-described embodiment within the scope of the technical idea of the present invention.

Representatively, in the above-described embodiment, the rotation angle information is encoded and stored in the sensor DB and transmitted to the parking guidance module, but the rotation angle may be transmitted as it is. In this case, the rotation angle coding unit 336 performs a function other than encoding the rotation angle.

The present invention can also be embodied as computer-readable codes on a computer-readable recording medium. The computer-readable recording medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like, which are also implemented in the form of a carrier wave (for example, transmission over the Internet). It also includes. The computer readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion.

So far I looked at the center of the preferred embodiment for the present invention. Those skilled in the art will appreciate that the present invention can be implemented in a modified form without departing from the essential features of the present invention. Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

300 sensor module 310 first power supply
320 Sensor unit 330 Rotation angle information generator
332 Rotation Angle Converter 334 Rotation Angle Generator
336 Rotation Angle Coding Unit 340 Sensor DB
350 First Communication Unit 360 Wireless Charging Unit
400 Parking guidance module 410 Second power supply
420 Display 430 Control
440 vehicle DB 450 second communication unit

Claims (19)

A sensor module installed at a steering wheel of the vehicle to generate and transmit rotation angle information of the steering wheel; And
And a parking guidance module configured to receive the rotation angle information and display a parking guidance line indicating an expected movement path of the vehicle corresponding to the rotation angle information so as to overlap the rear image input from the rear camera. system. The method of claim 1, wherein the sensor module
A first power supply unit supplying power to the sensor module;
A sensor unit configured to output coordinate values of the sensor module moving as the handle rotates;
A rotation angle information generator configured to calculate a rotation angle of the handle using the coordinate value and output the rotation angle information; And
And a first communication unit for wirelessly transmitting the rotation angle information. The method of claim 2,
And the rotation angle information generator generates rotation angle information in preset angle units. The method of claim 2, wherein the sensor module
And a sensor DB for storing the rotation angle corresponding to the coordinate value output from the sensor in advance and sequentially storing the rotation angle information generated by the rotation angle information generator. The method of claim 4, wherein the rotation angle information generating unit
A rotation angle conversion unit which outputs rotation angle data by converting the coordinate value output from the sensor unit into the sensor DB to convert the rotation angle; And
The rotation angle data is determined in units of a preset number, and whether to generate the rotation angle is determined according to a ratio of the rotation angle data included in a preset unit rotation angle range, and the rotation angle is set in a preset rotation angle unit. Parking guidance system comprising a rotation angle generating unit for outputting. The method of claim 5, wherein the rotation angle information generating unit
And a rotation angle coding unit converting the rotation angle inputted from the rotation angle generation unit into a code allocated in advance and outputting the rotation angle information to the sensor DB and the first communication unit as the rotation angle information. The method of claim 6, wherein the rotation angle coding unit
Reads the rotation angle information stored in the sensor DB, and compares the rotation angle to be currently coded with the rotation angle information sequentially stored in the sensor DB to generate the rotation angle information by encoding the rotation angle only when a preset continuity is maintained Parking guidance system, characterized in that. The method of claim 6, wherein the rotation angle coding unit
If the rotation angle information stored in the sensor DB is read and the rotation angle to be currently encoded is compared with the rotation angle information sequentially stored in the sensor DB, the preset continuity is maintained, but if one unit rotation angle information is missing, The parking guidance system, characterized in that for encoding the missing unit rotation angle to the sensor DB and the first wireless communication unit, and to code the current rotation angle to be coded and output to the sensor DB and the first wireless communication unit. The method of claim 1,
The first power supply unit is implemented as a rechargeable secondary battery,
The sensor module further includes a wireless charging unit for supplying a charging current to the first power supply unit,
The wireless charging unit
An electromagnetic field generating unit fixed to the vehicle to receive power from a cigar jack of the vehicle and to generate an electromagnetic field; And
And a charging current generating unit installed below the electromagnetic field generating unit to generate a charging current using the induced electromotive force generated by the electromagnetic field and output the charging current to the first power supply unit to charge the first power supply unit. Induction system. The method of claim 1, wherein the parking guidance module
A vehicle DB for storing parking guidance line information indicating an expected movement route of the vehicle corresponding to the rotation angle information according to the type of vehicle;
A second communication unit for transmitting a rotation angle information request signal to the sensor module and receiving rotation angle information wirelessly from the sensor module;
A control unit for outputting the rotation angle information request signal to the second communication unit when a reverse gear is input, and reading and outputting parking guidance line information corresponding to the rotation angle information input from the second communication unit from the vehicle DB; And
And a display unit configured to display a rear image input from the rear camera when the reverse gear is input and to display the parking guidance line information input from the control unit so as to overlap the rear image. (a) installing the sensor module at the center of the handle, initializing the handle with the center, and inputting a reference coordinate value of the handle;
(b) generating, by the sensor module, coordinate values of the sensor module that change as the handle moves, generating and storing rotation angle information of the steering wheel using the coordinate values, and transmitting them to the parking guidance module installed in the vehicle ; And
(c) the parking guidance module outputting a parking guidance line indicating an expected movement path of the vehicle corresponding to the rotation angle information together with the rear image input from the rear camera. The method of claim 11, wherein step (b)
The parking guidance method, characterized in that for generating rotation angle information in a predetermined angle unit. The method of claim 12, wherein step (b)
(b1) converting a coordinate value of the sensor module to a rotation angle of a handle corresponding to the coordinate value;
(b2) outputting a rotation angle by determining whether the rotation angle is included in a range of unit rotation angles output as rotation angle information according to the preset angle unit; And
(b3) when the rotation angle is within the range of the unit rotation angle, storing the unit rotation angle including the rotation angle as rotation angle information and transmitting the information to the parking guidance module. Parking guidance method. The method of claim 12, wherein step (b3)
Read previously stored rotation angle information from the sensor DB, which sequentially stores the rotation angle information, and compare the rotation angle information with the current rotation angle information, and store the rotation angle information in the sensor DB when the continuity of rotation is maintained. Parking guidance method characterized in that the transmission to the parking guidance module. The method of claim 14, wherein step (b3)
If the rotation angle to be stored currently maintains continuity of rotation but one unit rotation angle information is missing, the missing unit rotation angle is first stored in the sensor DB as the rotation angle information, and then the rotation angle to be stored is rotated. Parking guidance method characterized in that stored in the sensor DB as information. The method of claim 12, wherein step (b3)
And when the rotation angle information request signal is received from the parking guidance module, transmitting the rotation angle information to the parking guidance module. The method according to any one of claims 13 to 16, wherein step (b3)
And encoding and storing the rotation angle information, and transmitting the information to the parking induction module. The method of claim 13, wherein step (b2)
The rotation angle data converted from the coordinate value is determined in units of a predetermined number, and the rotation angle is output by determining whether to generate the rotation angle according to a ratio of the rotation angle data included in the unit rotation angle range. Parking induction way. The method of claim 11,
In step (b),
The parking guidance module transmits the rotation angle information request signal to the sensor module when the reverse gear is set, and the sensor module transmits the rotation angle information to the parking guidance module when the rotation angle information request signal is received.
Step (c) is
The parking guidance line information corresponding to the rotation angle information is read from the vehicle DB storing the parking guidance line information corresponding to the rotation angle information according to the type of vehicle and output along with the rear camera image, and the starting of the vehicle is turned off or the reverse gear When is released, the parking guidance method, characterized in that for transmitting the sleep mode signal requesting to stop the rotation angle information transmission to the sensor module.
KR1020100018537A 2010-03-02 2010-03-02 System and method for guiding parking of vehicle KR101071666B1 (en)

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PCT/KR2011/000760 WO2011108811A2 (en) 2010-03-02 2011-02-07 Parking guidance system and method using a rotational-angle sensor

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KR101349408B1 (en) * 2011-11-18 2014-01-15 엘지이노텍 주식회사 A parking assisting system
KR101511992B1 (en) * 2013-09-06 2015-04-14 현대모비스(주) Method for controlling steering wheel and System therefor
KR101611194B1 (en) * 2014-04-04 2016-04-11 주식회사 와이즈오토모티브 Apparatus and method for peripheral image generation of vehicle
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