JPS63100321A - On-vehicle course guidance system - Google Patents

Abstract

PURPOSE:To facilitate and secure initial setting and to make a check on a traveling track in traveling by providing a switch and switching a traveling mode and a map mode. CONSTITUTION:When the map mode is set with the mode switch 17, a CPU 15 controls a map projection device 18 and a desired map is displayed on a display device 19; when the brightness of a starting point and a destination point on the map is indicated with an XYtheta switch, the corresponding coordinates are detected by a coordinate detector 12 to perform the initial setting easily, securely, and accurately. Then when the traveling mode is set, the CPU 15 calculates the current position of a vehicle according to the outputs of a vehicle speed sensor 13 and a direction sensor 14 and stores it in a traveling information memory 16 successively and the absolute azimuth, destination, and extent of arrival at the destination are displayed on the device 19. When the map mode is entered by the switch 17 when necessary, the map and traveling track are displayed on the device and the traveling track can be checked.

Description

[Detailed Description of the Invention] The present invention relates to an on-vehicle course guidance system, and its purpose is to display a driving mode, a map, and a driving trajectory on a display device as necessary to display absolute direction, destination position, etc. To provide an on-vehicle course guidance system equipped with a mode changer equipped with a switch capable of changing to map mode.

Figure 1 shows a conventional in-vehicle course guidance system;
The figure is an explanatory diagram illustrating a method of inputting initial values (starting point, relay point, destination) in a conventional vehicle-mounted course guidance system.

After setting the departure point 9 using the initial value select switch 1 before driving, refer to the dedicated map 8 divided at regular intervals,
The relay point 10 determined to minimize the error between the actual travel route and the system is set with the initial value select switch 1, and the direction from the departure point 9 to the relay point 10 is set with the direction setting switch 2 and distance setting switch 3. The distance in the north-south, east-west direction is read from the dedicated map 8, and inputted as, for example, Xh1 to the east and Ykm to the north. Destination 11
Similarly, for the set of , the direction from the relay point 10 to the destination 11 and the distance in the north, south, east, and west directions are input.

While the vehicle is running, the speed of the vehicle is displayed on the speed display 4 based on the output of the vehicle speed sensor, and the absolute direction is displayed on the absolute direction display 5, so that it is possible to confirm which direction the vehicle is currently traveling. In addition, the direction from the current position to the destination 11 is calculated by calculating the output of the vehicle speed sensor and the direction sensor (from this, it is displayed on the destination position display 6, and the degree of arrival to the destination 11 is calculated between the initial value and the current position. The destination attainment level is displayed on the bar display 7 through arithmetic processing with the travel progress.

In the conventional in-vehicle course guidance system as described above, it is impossible to know the current position on the map because only information on the absolute direction at the current position and the destination position φ and the degree of arrival to the destination can be obtained. Instead, the initial values were entered by referring to a dedicated map and reading the approximate direction and distance to the destination, which resulted in poor accuracy and inconvenience in operation.

In addition, an in-vehicle course guidance system was devised that could display the route along with the map, but since it was dangerous for the driver to check the route while driving, the display was turned off while driving. Therefore, there were drawbacks such as the inability to obtain driving information while driving.

The present invention eliminates the drawbacks of the conventional system, and FIG. 3 shows a block diagram of the on-vehicle course guidance system according to the present invention, and FIG. 4 is a perspective view of the on-vehicle course guidance system according to the present invention. It shows. FIG. 5 also shows a screen 20 consisting of an LCD display device with an absolute orientation
5. A driving mode is shown in which the destination location 26 and the degree of arrival n from the current position to the destination are displayed. FIG. 6 also shows a map mode in which the driving trajectory and a map are displayed on the screen 20. Note that the map is projected and displayed from the back of the screen 20 only in the map mode (not shown), and other displays are controlled by a signal from the CPU 15, which is a control device.
The CD is driven and displayed on the screen 20, and each displayed content can be recognized on the screen 20.

First, when inputting the departure point and destination before driving, a map is projected onto the screen 20 from the back using a microfilm and a projector, and the map is searched while directly viewing the map projected on the screen 20. Operate the switch 21 to select the map showing the departure point and destination, use the XYθ switch 22 to align the bright spot displayed on the screen 20 with the destination on the map, and press the memory key 23.
By setting the destination, the destination is input to the coordinate detector 12 and recorded in the travel information memory 16. Further, the starting point can be determined by aligning the bright spot on the screen 20 with the starting point on the map, and the initial setting is completed.

While the vehicle is running, the outputs from the vehicle speed sensor 13 and direction sensor 14 are processed by the CPU 15 to obtain a signal indicating the current position, and this signal is recorded in the running information memory 16. The signals once recorded in this way are stored in the driving information memory 16.
The fifth
A driving mode that displays the absolute direction, destination position, and degree of arrival to the destination as shown in the figure is displayed on the display device 19,
A signal is output to the map projection device 15 to update the map as necessary even during the driving mode.

In addition, as shown in FIG. 6, when displaying a map and a travel trajectory, the outputs of the vehicle speed sensor 13 and direction sensor
The PU 15 calculates and obtains a signal indicating the current position.

This signal indicating the current position is recorded in the travel information memory 16 and input to the display device 19 to display the current position, and the CPU 15 also records all the signals from the travel information memory 16 to show the travel trajectory. Data before the current time is read out and input to the display device 19 to display the travel trajectory.

Further, a signal indicating the current position is input from the CPU 15 to the map projection device 18. When the current position reaches the edge of the map projected on the screen 20ζ, the map can be automatically updated.

In addition, when displaying the driving mode, the absolute direction can be displayed as a signal that has been processed by the output CPU 12 of the direction sensor 11, and there is no need to read the data from the driving information memory 16 and perform further calculation processing. The degree of arrival is calculated by using the destination data recorded in the travel information memory 16 and the data indicating the current position recorded during travel.
It can be displayed as a signal obtained by calculation from 151.

Mode switch 1 is used to switch between driving mode and map mode.
A switch provided at 7 allows the user to freely switch between driving mode and map mode as required, and the output of the mode switch 17 is input to the CPU 15.
The map projection device 18 is controlled by signals from the CPU 15, and display signals are inputted from the CPU 15 to the display device to perform desired display.

As described above, the present invention is configured so that two modes can be displayed on the in-vehicle course guidance system, so if an assistant is on board, the driving mode can be switched from the map mode to the map mode as desired even while driving. In addition, the initial values can be input while looking directly at the screen on the projected map, making operation extremely easy and making it possible to increase the patrol accuracy. It has a great effect.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional in-vehicle course guidance system, Fig. 2 is an explanatory diagram illustrating the conventional method of inputting initial values (starting point, relay point, destination), and Fig. 3 is an illustration of the present invention. Block diagram for explaining the in-vehicle course guidance system of
FIG. 5 is a perspective view showing the driving mode according to the present invention, FIG. 5 is a perspective view of the screen showing the display state of the driving mode in the example of FIG. 4, and FIG. 6 is the display of the map mode on the same screen. It is a perspective view of a screen showing a state. 1...Initial value selection switch 2...Azimuth setting switch 3...Distance setting switch 4...Speed indicator 5.25...Absolute direction indicator 6.26...Destination position indicator 7.27 Destination attainment bar display 8 Dedicated map 9 Departure point 12 Coordinate detector 11 Destination 13 Vehicle speed sensor 14 Direction Sensor 15...CPU (Central Processing Unit) 16...Driving information memory 17...Mode switch 18...Map projection device 19...Display device 20...Screen 21...Map search switch 22...XYθ switch 23...Memory key U...Mode select switch 10...Relay point Patent applicant Alps Electric Co., Ltd. 3rd item 5th @

Claims (1)

[Claims] It includes a coordinate detector, a vehicle speed sensor, a direction sensor, and a control device that calculates and processes the output signals of the coordinate detector, vehicle speed sensor, and direction sensor, and determines the absolute direction, destination position, etc. based on the output signal of the control device. An in-vehicle course guidance system having a display device that displays a driving mode that displays a map and a map mode that displays a map/travel trajectory based on an output signal of the control device, comprising a switch that switches between the driving mode and the map mode. An in-vehicle course guidance system characterized by being equipped with a mode switch.