JP2009281989A - Mobile object information display device, mobile object information display method, and the like - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile object information display device, mobile object information display method, and the like for accurately displaying the azimuth of a vehicle. <P>SOLUTION: This mobile object information display device acquires current position information showing the current position of a mobile object and current azimuth information showing the current azimuth of the mobile object, acquires display position and display azimuth on a screen to display mobile object information based on the current position information and current azimuth information, and determines whether to correct the display azimuth. When the display azimuth is corrected, the mobile object information display device acquires a corrected azimuth at the display position, and displays the mobile object information on a screen based on the display position and the corrected azimuth. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a technical field such as a moving body information display device that displays information indicating a moving body such as a vehicle on a screen.

  Conventionally, a navigation device that displays vehicle information indicating a vehicle on a display screen, searches for a route from the departure point of the vehicle to a destination, and performs route guidance for a driver along the route is known. ing.

In such a navigation device, there is a method using GPS (Global Positioning System) as a method for detecting the vehicle position. In such a GPS method, the vehicle position is detected by the GPS and displayed on the display unit. Since the display control processing takes time to do so, it has been a problem to accurately detect and display the position of the vehicle that moves every moment in consideration of the processing time. In order to solve such problems, there has been proposed a navigation device that displays accurate position information based on the speed and traveling direction of a vehicle (for example, Patent Document 1).
JP-A-6-66575

  In such a navigation device, when the vehicle is displayed, the position may be displayed using a mark or the like that clearly indicates the direction (azimuth) the vehicle is facing. However, in the navigation device disclosed in Patent Document 1, no consideration is given to the direction of the vehicle. Therefore, when the vehicle is traveling while changing its direction, such as when the vehicle is traveling on a curved road (for example, a mountain road or a highway junction), the direction in which the vehicle is facing can be displayed correctly. There is a problem that you can not.

  Then, this application makes it a subject to eliminate such a problem, and it aims at providing the mobile body information display apparatus, the mobile body information display method, etc. which can display the azimuth | direction of a vehicle correctly.

  In order to solve the above-mentioned problem, the invention described in claim 1 is a moving body information display device that displays moving body information indicating a moving body on a screen, and includes current position information indicating a current position of the moving body; Current position and direction acquisition means for acquiring current direction information indicating the current direction of the mobile object, and display position and display on the screen on which the mobile object information is to be displayed based on the current position information and the current direction information Display position and orientation acquisition means for acquiring an orientation, orientation correction determination means for determining whether or not the display orientation should be corrected, and a correction orientation for acquiring a correction orientation at the display position when the display orientation is corrected An acquisition means; and display control means for displaying the moving body information on the screen based on the display position and the correction direction.

  The invention according to claim 9 is a moving body information display method for displaying moving body information indicating a moving body on a screen, wherein current position information indicating a current position of the moving body, and Obtaining a current orientation information indicating a current orientation, obtaining a display position and a display orientation on a screen on which the mobile object information is to be displayed based on the current position information and the current orientation information, and the display Determining whether or not to correct the orientation, and correcting the display orientation, obtaining the corrected orientation at the display position, and the mobile body information based on the display position and the correction orientation. And a step of displaying on the screen.

  According to a tenth aspect of the present invention, there is provided a computer for displaying moving body information indicating a moving body on a screen, current position information indicating a current position of the moving body, and current direction indicating a current direction of the moving body. Current position and direction acquisition means for acquiring information, display position and direction acquisition means for acquiring a display position and a display direction on the screen on which the mobile object information is to be displayed based on the current position information and the current direction information, and the display Based on the azimuth correction determination means for determining whether or not to correct the azimuth, the correction azimuth acquisition means for acquiring the correction azimuth at the display position when correcting the display azimuth, and the display position and the correction azimuth. It is made to function as a display control means to display the said mobile body information on the said screen.

  Hereinafter, the best embodiment of the present application will be described with reference to the accompanying drawings. In addition, embodiment described below is embodiment when this application is applied with respect to the vehicle-mounted navigation apparatus mounted in the vehicle as an example of a mobile body.

  First, with reference to FIG. 1 etc., the structure and function of the vehicle-mounted navigation apparatus in this embodiment are demonstrated.

  FIG. 1 is a diagram illustrating a schematic configuration example of an in-vehicle navigation device according to the present embodiment.

  As shown in FIG. 1, the in-vehicle navigation device S includes a GPS (Global Positioning System) receiving unit 1, a sensor unit 2, a traffic information receiving unit 3, an information storage unit 4, a display unit 5, an audio output unit 6, and an operation unit. 7, a system control unit 8, and the like, which are connected via a bus 9.

  The GPS receiving unit 1 receives navigation radio waves output from GPS satellites arranged in the satellite orbit and orbiting the earth via an antenna (not shown), and detects position information (longitude and latitude) based on the received signals. The GPS data is output to the system control unit 8.

  The sensor unit 2 includes, for example, a speed sensor that detects the speed of the vehicle based on a vehicle speed pulse, a direction sensor (gyro sensor) that detects the traveling direction of the vehicle using geomagnetism, an acceleration sensor that detects the acceleration of the vehicle, A distance sensor or the like for detecting the travel distance is provided, and each data (angular velocity data, velocity data, bearing data, acceleration data, etc.) detected by these sensors is output to the system control unit 8. .

  The traffic information receiving unit 3 has, for example, a VICS (Vehicle Information and Communication System) receiver, FM multiplex broadcasting, optical (infrared) beacons, radio waves (on the roads (main highways and highways)) Receives road traffic information (e.g., information indicating a traffic jam section and average vehicle speed (for example, 20 km / h to 30 km / h), etc.) transmitted from a beacon, etc., and outputs it to the system control unit 8 It is supposed to be.

  The information storage unit 4 includes, for example, a CD (Compact Disc) drive, a DVD (Digital Versatile Disc) drive, an HD (Hard Disk) drive, and the like. -Reads data and programs (including the mobile information display processing program and navigation processing program of the present application) from a recording medium such as ROM, DVD-ROM, or HD, and outputs them to the system control unit 8 . In addition, under the control of the system control unit 8, the HD drive stores (records) various data in the HD. The data and the program are stored and stored in a predetermined server connected to a communication network including the Internet and a mobile communication network (including a wireless base station), and transmitted from the server as appropriate. You may comprise so that it may output to the system control part 8 via the antenna and communication part which are not shown in figure.

  Here, the data stored in the HD or the like includes, for example, map data and menu data for prompting the user to input or select.

  The map data includes map image data for displaying a map on the screen in the display unit 5, for example, coordinates of each point on the map (coordinates (X, Y)), road information indicating each road name, each intersection name, and each junction (junction) name, etc., as well as multiple administrative boundary data indicating the boundaries of multiple administrative divisions on the map (each administrative (Including the address corresponding to the section), a plurality of house shape data indicating a plurality of plane sections on the map (for example, a section where facilities or buildings are installed), and a shape indicating the shape of a plan view of a river or a mountain Data (including names of rivers and mountains, etc.) are included.

  The display unit 5 includes, for example, a drawing processing unit, a buffer memory, and a display (for example, a liquid crystal display or an organic EL display). The drawing processing unit controls the map data under the control of the system control unit 8. Are expanded and drawn in the buffer memory and then displayed on the screen of the display. In addition, for example, a menu for prompting the user to give various instructions under the control of the system control unit 8 is also displayed on the screen. The display is composed of, for example, a touch panel type liquid crystal display or the like, detects a press by the user, and outputs an instruction signal corresponding to an instruction button for performing various instructions at the pressed position to the system control unit 8. It may be a thing.

  The audio output unit 6 includes, for example, a DAC (digital / analog signal converter), an amplifier, a speaker, and the like. After A conversion, the signal is amplified by an amplifier and output as a sound wave from a speaker.

  The operation unit 7 has a plurality of operation buttons for receiving various instructions from the user, and outputs an instruction signal corresponding to the operation button pressed by the user to the system control unit 8. ing. The operation unit 7 performs infrared communication with a remote control (not shown) provided with various operation buttons, receives an instruction signal from the remote control, and outputs it to the system control unit 8. Also good.

  The system control unit 8 includes a CPU having an arithmetic function, a working RAM, a ROM that stores various data and programs, and the like, and performs overall control of all the components in the navigation device S. Then, the CPU of the system control unit 8 reads out and executes a program (including the mobile object information display processing program of the present application) stored in the information storage unit 4, for example, so that the current position / azimuth acquisition means of the present application, the display position / azimuth It functions as an acquisition means, an azimuth correction determination means, a corrected azimuth acquisition means, and a display control means, and executes vehicle information display processing (including azimuth correction processing) to be described later.

  Here, the vehicle information display process will be described.

  In the vehicle information display process, the system control unit 8 determines the vehicle information based on each data (angular velocity data, velocity data, azimuth data, acceleration data, etc.) from the sensor unit 2 and GPS data from the GPS receiving unit 1. The current position (for example, latitude and longitude) and the current direction are calculated and acquired.

  Furthermore, the system control unit 8 calculates the display processing time based on the time required for D / A conversion, the time required to acquire the current position and the current orientation, the time required for the drawing processing unit to draw on the screen, and the like. And get. Specifically, the time when D / A conversion is completed is temporarily recorded in the work area and displayed by adding the time required for the D / A conversion to the difference from the timing displayed on the display unit 5. Processing time can be determined. Then, the system control unit 8 considers the display processing time, and displays a mark indicating the vehicle at the display position (coordinate (X, Y) position on the corresponding map) predicted from the acquired current position. (An example of mobile object information) is displayed.

  FIG. 2 is a diagram showing an example of the current position and current direction acquired by the system control unit 8 and the display position and display direction displayed on the screen of the display. The road on which the vehicle is curved (for example, a mountain road or It is a figure which shows an example in case direction correction is performed by driving | running | working the junction (junction) of an expressway.

  In the figure, marks indicating vehicles are indicated by isosceles triangles, and the apex angle of the isosceles triangle corresponds to the front of the vehicle, and the base angle of the isosceles triangle corresponds to the rear of the vehicle.

  The system control unit 8 first acquires the current position and the current direction. The position on the road at this time is represented by an R mark. Thereafter, the display position on the map is acquired based on the current position and the display processing time. The position on the map at this time is represented by a P ′ mark. At this stage, since the display azimuth is not yet corrected, the azimuth of the P ′ mark is shown in the same azimuth as the current azimuth indicated by the R mark.

  Thereafter, the system control unit 8 acquires the road information related to the display position indicated by the P ′ mark from the information storage unit 4 and detects the road type at the display position indicated by the P ′ mark. If the detected road type is a curved road such as a mountain road, the direction of the vehicle may change, so execution of the direction correction process is started. Note that this azimuth correction processing is started based on the road type as described above, and when the vehicle rotation is detected, the direction correction processing is performed in the vehicle traveling direction based on the road information acquired from the information storage unit 4. It is configured to recognize the curve shape of an existing road and to start the process when the direction of the vehicle is likely to change, such as when the radius of the curve shape is greater than or equal to a predetermined radius.

  Thereafter, when the execution of the azimuth correction process is started, the system control unit 8 reads the road information on the map related to the current position indicated by the R mark from the information storage unit 4 and the map related to the display position indicated by the P ′ mark. Road information is acquired, and the road distance X from the current position indicated by the R mark to the display position indicated by the P ′ mark and the turning radius r of the road are obtained from the road information. According to the example shown in the figure, the road distance X is acquired as a + b.

  Then, the system control unit 8 calculates and acquires the correction direction θ (the angle indicated by the alternate long and short dash line in the figure) using the following formula 1.

  Then, the system control unit 8 corrects the direction of the P ′ mark by the acquired correction direction θ. According to the example shown in FIG. 2, the azimuth of the P ′ mark is corrected by rotating the correction azimuth θ (the angle indicated by the dotted line), and the P mark as a mark indicating the corrected vehicle is displayed on the display unit 5. It becomes.

  In this way, even if the vehicle is turning while turning, such as when the vehicle turns right or left, or when the vehicle is traveling on a curved road such as a mountain road, the actual vehicle orientation Since the vehicle information can be displayed accurately, the vehicle information can be displayed in a state that is easier for the user to see.

  Next, with reference to FIG. 3, operation | movement of the vehicle-mounted navigation apparatus S in this embodiment is demonstrated.

  FIG. 3 is a flowchart showing an example of the vehicle information display process including the azimuth correction process in the system control unit 8. This vehicle information display process is always executed while the vehicle is running, for example, when a map around the current position is displayed on the screen of the display and the navigation operation is being performed.

  First, the system control unit 8 calculates and acquires the current position and current direction of the vehicle based on speed data, direction data, acceleration data, and the like from the sensor unit 2 and GPS data from the GPS reception unit 1. (Step S1).

  Next, the system control unit 8 acquires the display processing time required to acquire and display the current position and current direction (step S2), and the screen predicted from the acquired current position in consideration of the display processing time The display position on the top is acquired (step S3).

  Then, the system control unit 8 determines whether or not to start the azimuth correction process based on the road type, vehicle rotation, curve shape, and the like (step S4), and displays the display as when the vehicle is stopped. When the execution of the azimuth correction process is not started, such as when the display position correction considering the processing time is not executed (step S4: No), the current azimuth acquired in step S1 is set as the display azimuth (step S5). A mark indicating the vehicle is displayed on the display unit 5 based on the display orientation and the display position acquired in step S3 (step S6).

  On the other hand, when the execution of the azimuth correction process is started (step S4: Yes), the system control unit 8 acquires road information of the current position and the display position from the information storage unit 4 (step S7), and the current information is obtained from these road information. The road distance X between the position and the display position and the turning radius r of the road are acquired (step S8).

  Then, based on the road distance X and the turning radius r of the road, the correction azimuth θ is calculated and acquired by the above formula 1 (step S9), and the display azimuth is acquired based on the acquired correction azimuth (step S10). Based on this display orientation and the display position acquired in step S3, a mark indicating the vehicle is displayed on the display unit 5 (step S6).

  Such vehicle information display processing detects and determines the end of the process, for example, when the power of the in-vehicle navigation device S is turned off or when there is an instruction to end navigation from the user (step) S11) Until the end of the process is detected (step S11: No), the above-described processes of step S1 to step S11 are repeatedly executed. When the end of the process is detected (step S11: Yes), the vehicle information display process is ended.

  As described above, according to the above-described embodiment, the vehicle travels while changing its direction, for example, while traveling on a road where the vehicle is curved (for example, a junction of a mountain road or a highway). Even when the vehicle is present, the actual vehicle direction can be accurately displayed, so that the vehicle information can be displayed in a state that is easier for the user to see.

  In the above embodiment, the system control unit 8 determines whether or not to correct the azimuth, and the azimuth correction process is started only when the azimuth of the vehicle may change. When the vehicle direction does not change, such as when the vehicle is traveling straight, the system control unit 8 can use the acquired current vehicle direction as the display direction as it is, so that accurate vehicle information can be obtained without extra processing. Can be displayed.

  In the above-described embodiment, the road distance X between the current position and the display position and the turning radius r of the road are obtained from the road information related to the current position and the display position, and the correction direction θ is calculated (acquired) based on these. However, it can be configured to obtain the corrected orientation θ using the angular velocity data. Specifically, in the process of step S9 described above, the system control unit 8 determines that the acceleration data g (deg / sec) acquired from the sensor unit 2 in step S1 and the display processing time (sec.) Acquired in step S2. ), And a value obtained by multiplying by a correction direction θ (deg). Then, as in the above-described embodiment, the corrected orientation θ (deg) acquired in the current orientation is added to obtain the corrected display orientation.

  Further, a correction direction may be acquired from the road information regarding the display position acquired in step S3 based on the road direction existing at the display position, and the corrected display direction may be set.

  Moreover, in the said embodiment, although the example at the time of applying the mobile body information display apparatus of this application, the mobile body information display method, etc. with respect to the vehicle navigation apparatus S mounted in the vehicle was shown, it is limited to this. For example, a communication navigation system including a communication navigation terminal and a communication center apparatus to which the communication navigation terminal is connected via an antenna and a mobile communication network (including a radio base station). Is applicable. The present application is also applicable to other electronic devices that are mounted on vehicles and that can acquire information indicating the current position and display it on the screen.

  Further, in the above embodiment, the case where a vehicle is used as an example of a moving body has been described. However, the present invention is not limited to this. For example, a pedestrian or a bicycle is used as an example of a moving body. The present application is applied to a mobile terminal (for example, a mobile phone, a PDA (Personal Digital Assistant), a PHS (Personal Handyphone System), or a notebook PC (Personal Computer)) possessed by a driver (or installed on a bicycle). It may be applied. Further, the present application may be applied to a navigation device mounted on an aircraft, a ship, or the like as an example of a moving body.

It is a figure showing an example of outline composition of an in-vehicle navigation device concerning this embodiment. It is a figure which shows an example of the present position and present direction which the system control part 8 acquired, and the display position and display direction displayed on the screen in a display. 5 is a flowchart illustrating an example of vehicle information display processing in a system control unit 8.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 GPS receiving part 2 Sensor part 3 Traffic information receiving part 4 Information storage part 5 Display part 6 Audio | voice output part 7 Operation part 8 System control part 9 Bus S Car-mounted navigation apparatus

Claims (11)

A mobile body information display device for displaying mobile body information indicating a mobile body on a screen,
Current position and direction acquisition means for acquiring current position information indicating the current position of the moving body and current direction information indicating the current direction of the moving body;
Display position and orientation acquisition means for acquiring a display position and a display orientation on a screen on which the mobile object information is to be displayed based on the current position information and the current orientation information;
Azimuth correction determination means for determining whether or not to correct the display azimuth;
When correcting the display azimuth, correction azimuth acquisition means for acquiring the correction azimuth at the display position;
Display control means for displaying the moving body information on the screen based on the display position and the correction direction;
A moving body information display device comprising: In the moving body information display device according to claim 1,
The mobile body information is displayed on a map displayed on the screen,
The correction azimuth acquisition means detects road information relating to the current position and road information relating to the display position, and obtains the correction azimuth based on the road shape indicated by the road information and the current azimuth information. A moving body information display device characterized by: In the moving body information display device according to claim 1,
The mobile body information is displayed on a map displayed on the screen,
Angular velocity acquisition means for acquiring information indicating the angular velocity of the moving body;
Processing time acquisition means for indicating display processing time by the display control means;
The mobile body information display device, wherein the correction direction acquisition means acquires the correction direction based on the angular velocity, the display processing time, and the current direction information. In the moving body information display device according to claim 1,
The moving body information is displayed on a road on a map displayed on the screen,
The mobile body information display device, wherein the correction direction acquisition means detects road information related to the display position and acquires the correction direction based on a road direction indicated by the road information. In the mobile body information display device according to any one of claims 1 to 4,
The mobile body information is displayed on a map displayed on the screen,
The azimuth correction determination unit detects a road type at the display position, and determines whether or not the display direction should be corrected based on the road type. In the mobile body information display device according to any one of claims 1 to 4,
The azimuth correction determining means recognizes whether or not the moving body is rotating, and determines that the display azimuth should be corrected when the moving body rotates. In the mobile body information display device according to any one of claims 1 to 4,
The mobile body information is displayed on a map displayed on the screen,
The azimuth correction determining means recognizes a curve shape of a road existing in the traveling direction of the moving body, and determines that the display azimuth should be corrected when the radius of the curve shape is equal to or larger than a predetermined radius. A moving body information display device. In the mobile body information display device according to any one of claims 1 to 7,
When the display orientation is not corrected, the display control means displays the mobile body information on the screen based on the display position and the display orientation. A moving body information display method for displaying moving body information indicating a moving body on a screen,
Obtaining current position information indicating a current position of the mobile body and current direction information indicating a current direction of the mobile body;
Obtaining a display position and a display orientation on a screen on which the mobile object information is to be displayed based on the current position information and the current orientation information;
Determining whether to correct the display orientation;
When correcting the display orientation, obtaining a correction orientation at the display position;
Displaying the mobile object information on the screen based on the display position and the correction orientation;
A moving body information display method comprising: A computer that displays moving body information indicating a moving body on the screen,
Current position and direction acquisition means for acquiring current position information indicating the current position of the mobile body and current direction information indicating the current direction of the mobile body;
Display position and orientation acquisition means for acquiring a display position and a display orientation on a screen on which the mobile object information is to be displayed based on the current position information and the current orientation information;
Orientation correction determination means for determining whether or not to correct the display orientation;
When correcting the display azimuth, correction azimuth acquisition means for acquiring the correction azimuth at the display position, and display control means for displaying the moving body information on the screen based on the display position and the correction azimuth. A moving body information display processing program characterized by causing it to function.   11. A recording medium in which the moving body information display processing program according to claim 10 is recorded so as to be readable by a computer.

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