JPH0721417B2 - Navigation aid system - Google Patents

Description

[Technical field to which the invention pertains] The present invention is based on the knowledge of the position of a moving body and the operation route.
The present invention relates to a navigation aid system (mobile body operation support method) that can reduce driving load.

[Prior art]

As a conventional navigation aid system, for example, "Research and development of automobile comprehensive control technology, which was carried out as a large project of the Ministry of International Trade and Industry in 1973-52 (reference: published by Japan Industrial Technology Promotion Association, large project" automobile comprehensive control technology "Research and development", August 1977). In the vehicle-to-ground millimeter-wave communication system (hereinafter referred to as the "large pro-millimeter wave system") that was conducted as part of that research, the map to the vehicle was used. However, in this method, it is necessary to install ground equipment at each intersection and millimeter waves (60 GHz).
Since it uses, there was a defect that the cost was very high.

In other conventional navigation aid systems, for example, a gas rate gyro sensor mounted on an automobile is used as a direction sensor and combined with a distance sensor such as a tachometer to display the position of the vehicle on a console display. There is a method to do. However, in this method, it is necessary to manually replace the map sheet on the display, and since it is not online with ground equipment (eg, traffic information sensor), real-time traffic information cannot be handled and route guidance is not possible. There was a flaw.

[Object of the Invention]

An object of the present invention is to display the route guidance in real time on an image display device by receiving the latest data from a traffic information service sensor wirelessly, and to always display the position of a moving body on a map on the display device. It is to provide a navigation aid system that can do it.

[Structure of Invention]

As shown in FIG. 1, a navigation aid system according to the present invention includes a package media type electronic information storage means for storing position path information of a region where a moving body exists,
Position sensor means for detecting and outputting the position of the moving body,
Image display means for displaying a guide map of the travel route of the moving body, means for inputting departure point information and destination point information of the moving body, and processor means for controlling transfer of information between these means and calculation processing. , A mobile system including means for temporarily storing guide information and signal transmitting / receiving means for exchanging signals with a fixed station via a wireless line, and electronic information storage for storing position path information of a service area Means, electronic storage means for inputting / outputting route guidance information about the service area, processor means for controlling information exchange between these means and calculation processing, and a signal of a signal via a wireless line between the mobile body and the mobile body. A fixed station system including a signal transmitting / receiving means for transmitting and receiving, and the starting point information from the moving body or the position information detected by the position sensor means and the position information. In the fixed station system which has transmitted the target point information and the fixed station information to the fixed station and the fixed station processor means receives from the electronic information storage means position path information corresponding to the information from the mobile body. reading,
The route guidance information corresponding to the position route information is read out from the electronic storage means, and the departure point information from the moving body,
Alternatively, based on the position information and the destination information, an optimum route guidance plan from the position route information and the route guidance information to the destination is created, and the wireless line is routed as a series of guidance information signals. In the mobile body system which has received the guide information from the package media type electronic information storage means and the received guide information, the processor means of the mobile station transfers the position path information and the received guide information to the mobile body. After temporarily storing, a route guide map is created from the read guide information and the position information from the position sensor means,
The image is displayed on the image display means.

Example of Invention

Next, the navigation aid system of the present invention will be described with reference to the accompanying drawings showing embodiments.

FIG. 2 is a system diagram of an embodiment according to the present invention. In this figure, the user of this system who is in a car (CAR) 20 first turns on the power. Thereby, for example, a pop-up menu is displayed on the in-vehicle image display device (MDISP) 1 such as CRT DISPLAY, and the menu is selected by the in-vehicle keyboard (MKYB) 2.
Alternatively, write in the displayed instruction items with MKYB2 or select with the mouse (MOUSE) 4. This series of procedures is stored in the program ROM (MROM) 8 and controlled by the vehicle-mounted central processor unit (MCPU) 3. When the route guidance service menu is selected, the departure point and destination point are specified as MKYB2 or MOUSE4.
Is input. Instead of these keyboard and mouse, M
You may input with the touch sensor provided in the surface of DISP1. The point information (information on the starting point and the destination point) is transmitted by the MCPU3 to the in-vehicle wireless transceiver (MTR) 6 via the interface (MINT) 5 and is modulated here, and then the radio frequency, for example, 800 MHz band. Is transmitted as a carrier wave to the fixed station (FS) 40 via the on-vehicle antenna (MANT) 7.

The in-vehicle antenna (MANT) 7 and the fixed antenna (FANT) 31 are connected by the 800 MHz band radio as described above. FA
Received waves received by NT31 are fixed station transceiver (FTR) 3
The point information from the vehicle demodulated in 2 and transmitted reaches the fixed station central processor (FCUP) 34 via the interface (FINT) 33. The FCPU 34 stores various information for route guidance information, such as position route information, in an electronic information storage device (FMEM
I) Read from 36. The position and path information of FMEMI36 includes relatively constant information such as all map information of the service area and all road information. Furthermore, the FCPU34 is an electronic storage device (FMEM
II) Read the route guidance information from 37. The route guidance information of FMEM II37 contains relatively changing information such as various regulatory information and various temporary regulatory information due to road construction and accidents. Next, the FCPU 34 calculates from this information based on the point information received from the CAR 20 for the optimum route extraction, and adds the route guidance signal, arrow, and recommended route to the route map of the corresponding area. Create an optimal route guidance plan. Further, FPCU34 reassembles into a series of guide information signals for transmitting the route guide plan, and FINT33, FTR32, FANT31, MANT7, M
Sends to MCPU3 via TR6 and MINT5. The MCPU 3 stores the guide information signal in the in-vehicle storage device (MMEM) 9, and further, it is sent from the package type electronic information storage device (MFDD) 10, for example, the position path information stored separately in the floppy disk device in advance and the FS 40. A route guide map is created from the guide information and displayed on MDISP1. The position route information in the MFDD10 can be obtained, for example, from the fixed station FS40 before departure by car.
It is obtained by inserting the floppy disk copied from FMEM I36.

FIG. 3 is a flow chart showing the operation procedure of the MCPU 3 executed based on the program written in the MROM 8 in the embodiment of FIG. The basic operation procedure of this system will be described below with reference to this flowchart. When the program starts, it is first displayed on the selection menu or MDISP1. If you select the route guidance menu with MKYB2 or MOUSE4 (step), you will be prompted to enter the departure point and destination (point information), so enter it on MKYB2. The MCPU3 reads this point information data (step), compares the position route information (map information, road information) stored in the MFDD10 with the point information (step), and the map where the point is stored. If it is within the range handled by the information or road information, proceed to the step. If it is out of the range, "alarm display outside service area" is displayed on MDISP1, for example (step). In the next step, the location information is MTR6, MAN
Radio frequency from T7, for example 800MHz, FANT31 from FS
Transmit to 40. In FS40, according to the flow chart (step ~) of FCPU34 shown in FIG.
MANT7, MTR from FANT31 to CAR20 as a series of guidance information signals
6 Return to MCPU3 (step). The MCPU3 receives the guide information signal, the position information from the position sensor (SENSOR) 11 originating from the connection interface device (SINT) 12, and the MFDD.
A route guide map is created from the map information and route information stored in 10 (step), and the in-vehicle storage device (MMEM)
Store in 9. Next, this route guide map is read out at a fixed cycle and displayed on MDISP1 (step). Position sensor 1
The output of ₁ is read every predetermined time Δt ₁ (step),
It is transferred to MCPU3 (step) and the route guide map is recreated. This refreshes the route guide map stored in the MMEM 9 (step).

〔The invention's effect〕

As is clear from the above description, according to the present invention, the position information (eg, FMEM I of the fixed station in the fixed station) in the traveling area is stored in the package media type information storage device such as a floppy disk before the user of the moving body departs. By copying a part of the position path information) and using it while traveling, the transmission capacity of the wireless transmission path between the fixed station and the mobile station is much smaller than that of the millimeter wave system. Even in the wireless system, a practical route guidance map can be displayed on the display device. The transmission capacity of the wireless transmission path is, for example, 10 Mbps in the millimeter wave system, but may be 2400 bps in the system of the present invention, and the ratio is about 1/4000. In other words, the position path information and map information, which require a large amount of information, are used in package media, and only the information signals based on various types of temporary regulation information due to accidents that require real-time property among the guide information signals are transmitted over the wireless line. By doing so, the effect is great in that an economical and practical system can be obtained.

[Brief description of drawings]

1 is a block diagram showing a configuration according to the present invention, FIG. 2 is a block diagram showing a system configuration of an embodiment according to the present invention,
FIG. 3 is a flowchart showing the operating procedure of the mobile system in FIG. 2, and FIG. 4 is a flowchart showing the operating procedure of the fixed station in FIG. In the figure, 1 is an in-vehicle image display device (MDISP), 2 is an in-vehicle keyboard (MKYB), 3 is an in-vehicle central processor unit (MCPU), 4 is a mouse (MOUSE), 5 is a connection interface device (MINT), and 6 is in-vehicle. Wireless transceiver (MTR), 7 is on-board antenna (MANT), 8 is program ROM (MROM), 9 is on-board storage (MMEM), 10 is packaged electronic information storage (MFDD), 11 is position sensor , 12 is a connection interface device (SENSOR), 20 is a car (CAR), 31 is a fixed station antenna (FANT), 32 is a fixed station radio transceiver (FTR), 33 is a fixed station connection interface device (FINT), 34 Is a fixed station central processor unit (FCPU), 35 is a fixed station program ROM
(FROM), 36 is a fixed station electronic information storage device (FMEM I), 37
Is a fixed station electronic storage device (FMEM II), and 38 is a fixed station keyboard (FKYB).

Claims (1)

[Claims] 1. A package media type electronic information storage means for storing position path information of an area where a moving body exists, a position sensor means for detecting and outputting the position of the moving body, and an operation path of the moving body. Image display means for displaying the guide map, the means for inputting the departure point information and the destination point information of the moving body, the processor means for controlling the transfer of information between these means and the calculation processing, and the temporary storage of the guide information. And a fixed station, a mobile system including a signal transmitting / receiving means for transmitting / receiving a signal to / from a fixed station, an electronic information storage means for storing position path information of a service area, and the service area. The electronic storage means for inputting / outputting the route guidance information regarding the route information, the processor means for controlling the information exchange between these means and the calculation processing, and the mobile body are communicated via a wireless line. And a fixed station system including a signal transmitting / receiving means for transmitting and receiving the information, and transmitting the departure point information from the moving body or the position information detected by the position sensor means and the destination point information to the fixed station. In the fixed station system which receives these information, the fixed station processor means reads the position path information corresponding to the information from the mobile unit from the electronic information storage means,
The route guidance information corresponding to the position route information is read out from the electronic storage means, and the departure point information from the moving body,
Alternatively, based on the position information and the destination information, an optimum route guidance plan from the position route information and the route guidance information to the destination is created, and the wireless line is routed as a series of guidance information signals. In the mobile body system which has received the guide information from the package media type electronic information storage means and the received guide information, the processor means of the mobile station transfers the position path information and the received guide information to the mobile body. After temporarily storing, a route guide map is created from the read guide information and the position information from the position sensor means,
A navigation aid system for displaying on the image display means.