• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a vehicle navigation apparatus, comprising: an acceleration sensor (10 ') for generating an analog signal corresponding to the acceleration of a host vehicle; Direction and speed calculating section for integrating the analog signal applied from the acceleration sensor 10 'to calculate the speed of the host vehicle and correcting the calculated vehicle speed and the traveling direction of the host vehicle detected by the geomagnetic sensor 9'. 11); The data on the longitude and latitude applied from the GPS receiver 3 is matched on the map data read from the map data storage section 5, and the position of the matched vehicle is applied from the direction and speed calculator 11. And a controller 4 'for correcting according to the speed and traveling direction data of the host vehicle and displaying the corrected position data to the direction and speed calculator 11. The present invention detects the speed of the vehicle by integrating the analog acceleration signal supplied from the acceleration sensor 10 'by the direction and speed calculator 11, and measures the position data of the vehicle currently displayed on the indicator 8 in the direction and Supply to the speed calculating section 11 to correct the speed and the driving direction of the vehicle.
    公开号:KR19990034824A
    申请号:KR1019970056521
    申请日:1997-10-30
    公开日:1999-05-15
    发明作者:고태윤
    申请人:오상수；만도기계 주식회사；
    IPC主号:
    专利说明:

    Vehicle Navigation System
    The present invention relates to a navigation device for a vehicle. In particular, the speed of the vehicle is detected by integrating an analog acceleration signal supplied from an acceleration sensor, and the speed of the vehicle and the driving of the vehicle using the position information of the vehicle currently displayed on the indicator. By allowing the direction to be corrected, the present invention relates to a vehicle navigation apparatus that can accurately display the position of the host vehicle.
    As shown in FIG. 1, a conventional vehicle navigation apparatus is installed at a main point of a road, receives a radio wave transmitted from a GPS (Global Positioning System) satellite 1 through an antenna 2, The GPS receiver 3 for calculating the latitude, the map data storage unit 5 for storing map data about the road, and the data for the longitude and latitude applied from the GPS receiver 3 are stored in the map data storage unit ( A controller 4 for matching on the map data read from 5) and an indicator 8 for visually displaying on the road map the optimum route to the current position and destination of the vehicle under the control of the controller 4; And a display driving unit 7 for driving.
    In addition, the conventional vehicle navigation apparatus includes a key input unit 6 having a plurality of keys for inputting a command for driving the indicator 8, and an indicator 8 by means of data supplied from the GPS receiver 3; In order to correct the display error with respect to the current position displayed in the) includes a geomagnetic sensor 9 and the vehicle speed sensor 10 for detecting the moving direction and moving speed of the host vehicle.
    In the conventional vehicular navigation apparatus configured as described above, the GPS receiver 3 receives radio waves from three different GPS satellites 1, that is, GPS data, and calculates the longitude and latitude of the received point.
    The controller 4 receives the data on the longitude and latitude calculated by the GPS receiver 3, matches the roads on the map data read from the map data storage unit 5, and displays them on the display 8. .
    In addition, the controller 4 corrects an error with respect to the current position of the host vehicle displayed by the GPS data, using data on the speed and driving direction of the host vehicle input from the geomagnetic sensor 9 and the vehicle speed sensor 10. The display is then displayed on the indicator 8.
    As described above, the vehicle speed sensor 10 provided in the conventional vehicle navigation apparatus generates a pulse signal corresponding to the rotational speed of the vehicle wheel and applies it to the controller 4, and the controller 4 counts the applied pulse signal. The speed of the vehicle is detected. However, since the rotation speed of the vehicle wheel may vary according to the type of the vehicle and the tire, the vehicle speed data for the host vehicle applied to the controller 10 may be incorrect. Accordingly, there is a problem that an error occurs between the position of the host vehicle displayed on the indicator 8 and the actual position.
    In order to solve the conventional problems as described above, the present invention integrates the analog acceleration signal supplied from the acceleration sensor to detect the speed of the vehicle, using the position information of the vehicle currently displayed on the display and the speed of the vehicle It is an object of the present invention to provide a vehicle navigation apparatus that can accurately display the position of a host vehicle by allowing the vehicle driving direction to be corrected.
    The present invention for achieving the above object is an acceleration sensor for generating an analog signal corresponding to the acceleration of the host vehicle; A direction and speed calculating unit for calculating the speed of the host vehicle by integrating the analog signal applied from the acceleration sensor, and correcting the calculated vehicle speed and the traveling direction of the host vehicle detected by the geomagnetic sensor; The data about the longitude and latitude applied from the GPS receiver are matched on the map data read from the map data storage unit, and the position of the matched host vehicle is applied to the velocity and progress direction data of the host vehicle applied from the direction and speed calculator. And a control unit for correcting according to the display and outputting the corrected position data to the direction and speed calculator.
    1 is a block diagram showing the configuration of a conventional vehicle navigation apparatus.
    Figure 2 is a block diagram showing the configuration of a vehicle navigation apparatus according to the present invention.
    Explanation of symbols on the main parts of the drawings
    1: GPS satellite 2: antenna
    3: GPS receiver 4 ': control unit
    5: Map data storage unit 6: Key input unit
    8: indicator 9 ': ground sensor
    10 ': acceleration sensor 11: speed and direction calculator
    Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
    As shown in FIG. 2, the vehicle navigation apparatus according to the present invention is installed at a main point of a road, and receives the radio wave transmitted from the GPS satellite 1 through the antenna 2 to calculate the longitude and latitude of the point. GPS receiver (3), a map data storage unit (5) for storing map data about roads, and data on the longitude and latitude applied from the GPS receiver (3) from the map data storage unit (5). By the controller 4 'and the controller 4' for matching the read-out map data, correcting the position of the matched vehicle according to the speed and direction of the vehicle, and outputting the corrected position data. A display driving unit 7 for driving an indicator 8 for visually displaying on the road map an optimal path to the current position and destination of the corrected own vehicle; To enter commands Includes an input unit (6).
    In addition, the navigation device for a vehicle according to the present invention includes a geomagnetic sensor 9 'for detecting a traveling direction of the host vehicle, an acceleration sensor 10' for generating an analog signal corresponding to the acceleration of the host vehicle, and the acceleration sensor 10 '. The speed of the host vehicle is calculated by integrating the applied analog signal from the controller, and the corrected vehicle speed and the traveling direction of the host vehicle detected by the geomagnetic sensor 9 'are output from the controller 4'. And a direction and speed calculator 11 for correcting the position data and applying the same to the controller 4 '.
    In Fig. 2, the same parts as in the conventional vehicular navigation apparatus are given the same reference numerals as in the prior art.
    In the vehicle navigation apparatus according to the present invention configured as described above, the geomagnetic sensor 9 'detects the direction of the host vehicle and applies it to the direction and speed calculator 11. In addition, the acceleration sensor 10 'applies an analog signal corresponding to the acceleration of the host vehicle to the direction and speed calculator 11.
    The direction and speed calculator 11 controls the speed of the vehicle calculated by the integrating process when the corrected position data is not supplied from the controller 4 ', that is, when the driving of the vehicle navigation device is started. In addition, the traveling direction of the vehicle is calculated and applied to the control unit 4 '.
    The controller 4 'matches the longitude and latitude data applied from the GPS receiver 3 onto the map data read from the map data storage unit 5, and adjusts the position of the matched vehicle in the direction and speed calculator. (11) is corrected according to the speed and traveling direction data of the host vehicle applied from (11) and displayed on the display (8).
    The controller 4 'outputs the position data of the host vehicle displayed on the indicator 8 to the direction and speed calculator 11, and the direction and speed calculator 11 outputs the position data applied from the controller 4'. To correct the speed and direction of travel.
    That is, the direction and speed calculation unit 11 calculates the speed of the host vehicle by integrating the analog signal applied from the acceleration sensor 10 ', wherein the reference value of the integration is varied so that the speed of the vehicle may be incorrectly calculated. In particular, when the vehicle rotates in the left / right direction, an incorrect speed data may be generated due to a change in the reference value of the integration process, and the traveling direction of the vehicle may also be detected differently from the actual state. In view of this point, in the present invention, the position data for the host vehicle currently displayed on the indicator 8 is fed back to the direction and the speed calculator 11 so that the speed and the moving direction of the host vehicle can be corrected.
    The speed and traveling direction of the own vehicle corrected as described above are applied to the controller 4 ', and the controller 4' corrects the GPS data by using the corrected speed and traveling direction of the own vehicle and then displays the host vehicle on the display 8. Will display the position of.
    As described above, the present invention integrates the analog acceleration signal supplied from the acceleration sensor 10 'by the direction and speed calculation unit 11 to detect the speed of the vehicle, and the position data of the vehicle currently displayed on the display 8. Is supplied to the direction and speed calculator 11 to correct the speed and the driving direction of the vehicle. By correcting the speed and driving direction of the host vehicle as described above, the present invention can display the position of the host vehicle more precisely, and can also display the current position of the host vehicle even where GPS data is not received from the GPS satellite 1. have.
    权利要求:
    Claims (2)
    [1" claim-type="Currently amended] GPS receiver for calculating the longitude and latitude of the receiving point, a map data storage unit for storing map data, an indicator for displaying the optimal route to the current current location and destination of the vehicle, and a direction for detecting the vehicle direction. In a vehicle navigation system comprising a geomagnetic sensor,
    An acceleration sensor for generating an analog signal corresponding to the acceleration of the host vehicle;
    A direction and speed calculating unit for calculating the speed of the host vehicle by integrating the analog signal applied from the acceleration sensor, and correcting the calculated vehicle speed and the traveling direction of the host vehicle detected by the geomagnetic sensor;
    The data about the longitude and latitude applied from the GPS receiver are matched on the map data read from the map data storage unit, and the position of the matched host vehicle is applied to the velocity and progress direction data of the host vehicle applied from the direction and speed calculator. And a control unit for correcting according to the display and outputting the corrected position data to the direction and speed calculator.
    [2" claim-type="Currently amended] The method of claim 1, wherein the direction and speed calculation unit
    Vehicle navigation apparatus, characterized in that for correcting the traveling direction and speed of the host vehicle using the position data of the host vehicle output from the controller.
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    同族专利:
    公开号 | 公开日
    KR100255172B1|2000-05-01|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    1997-10-30|Application filed by 오상수, 만도기계 주식회사
    1997-10-30|Priority to KR1019970056521A
    1999-05-15|Publication of KR19990034824A
    2000-05-01|Application granted
    2000-05-01|Publication of KR100255172B1
    优先权:
    申请号 | 申请日 | 专利标题
    KR1019970056521A|KR100255172B1|1997-10-30|1997-10-30|Car navigation system|
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