JPS61194600A - Vehicel guidance unit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a vehicle guidance system that displays a map to a destination on a display device to reliably and easily guide the vehicle to the destination.

[Technical Background of the Invention and Problems Therewith] For example, in order to guide a delivery vehicle to a desired destination in order to deliver packages to each home, the entire area is usually used as map information to reach the destination. Information regarding a wide-area map representing the destination and an enlarged destination-surrounding map around the destination is stored in a storage device, and when necessary, wide-area map information or destination-surrounding map information is read out from the storage device and displayed on the display device. The vehicle can be guided to the destination by driving the vehicle while observing this display.

By the way, when displaying such a wide-area map or a map around the destination on a display device, the wide-area map is initially displayed when the vehicle is at a considerable distance from the destination, and while looking at this wide-area map, it is necessary to The position detection device installed in the vehicle determines that the vehicle has entered the area indicated on the destination surrounding map, and the map display on the display device is thereby switched from a wide-area map to a destination surrounding map. I have to. However, if the above-mentioned position detection device uses geomagnetism, gyro, Loran C, etc., there are relatively many errors, and there is an error in the position to switch to the destination surrounding map, so the target delivery destination is not displayed properly. It may not be possible.

"Object of the Invention" This invention has been made in view of the above, and its purpose is to provide a vehicle guidance device that clearly displays a map of the surrounding area of the destination and reliably guides the vehicle to the destination. It's about doing.

[Summary of the Invention] In order to achieve the above object, the present invention provides an apparatus having a display device and guiding to a preset destination using a map displayed on the display device, as shown in FIG. , destination surrounding map storage means 1 for storing map information of the surrounding area for each of the destinations, position detection means 3 for detecting the position of the own vehicle, and information on the order of guidance to each of the destinations and the detected The present invention further comprises a display control means 7 which causes the display device 5 to display a surrounding map of the destination to which the vehicle is being guided based on the position of the vehicle, using map information from the destination surrounding map storage means 1. .

[Embodiments of the invention] Hereinafter, the present invention will be explained in detail using the drawings.

FIG. 2 is a block diagram showing one embodiment of the vehicle guidance device of the present invention, and this vehicle guidance device guides a delivery vehicle that delivers packages to each home, for example, to a destination, that is, a target house. It is applied for.

In the figure, a combination coater 21 is composed of, for example, a microcomputer, and a central processing unit (hereinafter abbreviated as C1] U) 2 composed of a microprocessor or the like.
It has 3. This CPU 23 is connected to an RO which stores processing programs, fixed data, etc. via a data bus 25.
M27, RAM 29 for temporarily storing calculation results, etc., display control device 311, image memory 33, and interface circuit for connecting to external peripheral devices 37.45°51
is connected.

The display control device 31 is a device for storing the image signal supplied from the CPtJ 23 in the image memory 33 and performing a control operation for displaying the image signal stored in the image memory 33 on a display device 35 made of a CRT. be. The display device 35 controlled by the display control device 31 displays a wide-area map including the delivery area, a simple route map that is an enlarged map of the vicinity of the house to which the delivery is to be made, a list of delivery destinations, etc. Ru. The image memory 33 consists of memory units 33a, 33b, and 330 that respectively store the three primary colors of each image signal in order to perform color display on the display device 35.
It is composed of 640 x 400 dots corresponding to the resolution of .

A light pen 39° operation switch 41 and a speaker 43 are connected to the interface circuit 37. The light pen 39 is used to input information, etc. by touching and operating the display screen of the display device 35 with the tip of the light pen 39. The operation switch 41 is made up of a plurality of switches as will be described later with reference to FIG. 3, and is used for switching display screens, inputting information, etc. The speaker 43 is for generating an alarm sound.

A floppy disk drive device 47 is connected to the interface circuit 45, and the floppy disk drive device 47 stores a floppy disk that stores the wide-area map, a simplified route map showing the vicinity of the house to which the delivery is to be made, a list of delivery destinations, etc. 49 is installed. The information stored on the floppy disk 49 is read out by the floppy disk drive device 47 under the control of the CPU 23 and temporarily stored in the RAM 29.
Under the control of the display control device 31, only desired information is stored in the image memory 33 via the display control device 31, and is displayed from the image memory 33 on the display device 35 under the control of the display control device 31.

A receiver 53 is connected to the interface circuit 51,
An antenna 55 is connected to this receiver 53. The antenna 55 receives radio waves from Loran C and supplies them to the receiver 53, and the receiver 53 supplies latitude and latitude information to the CPU 23 via the ink-face circuit 51. Ill. CPU23
identifies the vehicle's location from this information. As a result, C.P.
Based on this information, U23 displays the display device 3 as described later.
The position of the own vehicle can be displayed on the map displayed in 5, and the relationship with the destination can thereby be known.

FIG. 3 shows an example of the operation display panel of the vehicle guidance system. This operation display panel has a display device 35 in the center, a plurality of operation switches 418 to 41h are arranged on both sides of the display device 35, and a disk drive device 47 and a light pen 39 are arranged at the bottom. It is set up.

The operation switch 41a is a switch for displaying the delivery destination list on the display device 35, the operation switch 41h is a switch for displaying a wide area map, the operation switch 410 is a switch for displaying a simple route map, and the operation switch 41d is a light switch. The switch used in combination with the pen 39 is used to change the delivery order on the wide-area map displayed on the display device 35, the operation switch 41e is a switch for recording that the delivery has been completed, and the operation switch iir is used to record when the delivery destination is not home. A switch for recording what happened, operation switch 41 (],
Reference numeral 41h is a switch for moving the display page of the delivery destination list and easy route map forward and backward, respectively.

As mentioned above, the floppy disk 49 stores a wide-area map including the delivery area, a simplified map that is an enlarged map of the vicinity of the house to which the delivery is to be made, a list of delivery destinations, etc. , FIG. 4 shows an example of this memory configuration. This memory configuration includes a delivery destination data file area 61 that stores data for each delivery destination, a delivery order storage area 63 that stores the delivery order of the delivery destinations. A tube route map storage area 65 that stores simple route map information for each delivery destination, centering on each delivery destination and its vicinity;
It is divided into a wide area map storage area 67 that stores wide area maps.

The delivery destination data file area 61 stores delivery destination data consisting of the address, name, telephone number, member number, package code, etc. of each delivery destination in ascending order of membership number. The delivery order storage area 63 stores member numbers arranged in the delivery order of packages. The route map storage area 65 stores route map information for each delivery destination in descending order of member number. Wide area map storage area 67
stores wide area map information including all delivery destinations.

Next, the operation will be explained using the flowcharts of FIGS. 5 and 6.

FIG. 5 shows the operation when the power is turned on to the vehicle guidance system of this embodiment, and FIG. 6 shows the operation switches 41a to 4.
This shows the operation of the interrupt processing routine activated by the interrupt operation when 1h is operated.

First, in Figure 5, when the power is turned on, the ROM27
The navigator program stored in the floppy disk 49 is started, and the delivery order data stored in the delivery order storage area 63 of the floppy disk 49 is read and stored in the RAM 29 (steps 8-110). Next, detailed delivery destination data for each delivery destination according to this delivery order data is stored in the delivery destination data file area 61.
The delivery destination data corresponding to one screen of the display device 35 is read out sequentially and stored in the RAM 29.
23 and the display control device 31, the delivery destination data corresponding to one screen, that is, one page, is displayed as a delivery destination list on the display device 35 in the order of the delivery destinations. (step 120).

FIG. 7 shows an example of this delivery destination list.

Next, the receiver 53 receives the signal from the antenna 55.
The CPLJ 23 calculates the position of the own vehicle based on the latitude and longitude information supplied from CPLJ 3 to the CPU 23 via the interface circuit 51 (step 130). Thereafter, the position of the own vehicle is constantly calculated based on the latitude and longitude information that is sequentially supplied as the own vehicle moves.

While this operation continues, the operation switch 418
When any one of the switches 41h to 41h is operated, the interrupt process shown in FIG. 6 is activated, and first, it is checked which operation switch 41 has been operated. That is, it is checked whether the operation switch 41a for displaying the delivery destination list has been operated (step 210), and if the switch 41a has been operated, the same steps as steps 110 and 120 in FIG. 5 are performed. The delivery order data stored in the delivery order storage area 63 is read, and detailed delivery destination data for each delivery destination according to this delivery order data is stored in the delivery destination data file area 61.
Further, delivery destination data equivalent to one screen of the display device 35 is stored in the image memory 33, and one page of delivery destination data is displayed as a delivery destination list on the display device 35 in the order of delivery destinations. It will be displayed as shown in the figure (Step 2
20.230). If it is not the operation switch 41a for displaying the delivery destination list, the process proceeds from step 210 to step 240, where it is checked whether or not the operation switch 41b for displaying the wide area map has been operated, and it is checked whether or not the operation switch 41b for displaying the wide area map has been operated. In this case, floppy disk 49
The wide area map data is read from the wide area map storage area 67 (step 250), stored in the image memory 33, and displayed on the display device 35 under the control of the display control device 31. The position of the host vehicle divided in step 130 is simultaneously displayed on the wide area map displayed on the display device 35 (step 260). Furthermore, the location of the delivery destination, delivery order, etc. are superimposed on the displayed wide area map (step 270). FIG. 8 shows a display example in this case. In this figure, the "+" symbol indicates the location of the delivery destination, and the number next to it indicates the delivery order. The diagonally shaded "+1" symbol indicates the location of the delivery destination to which the delivery is currently being made.

If the operation switch 711b for displaying the wide-area map has not been operated, the process advances from step 240 to step 280, and a simple route map is displayed that enlarges the destination and its surroundings and displays them along with the main objects. It is checked whether or not the operation switch 41c for
The delivery destination data to be delivered next is read from the delivery destination data file area 61 of No. 9 and displayed on the upper part of the display device 35 (steps 290 and 300). Next, this loaded simple route map of the delivery destination is read from the corresponding storage location in the tube route map storage area 65 and stored in the image memory 33, and then from the center of the display device 35 under the control of the display control device 31. It is displayed at the bottom, superimposed on the delivery destination data (step 3).
1'0.320).

FIG. 9 is an example of this display. As shown in this display example,
The simple route map shows major roads and landmarks around them, such as post offices,
Bus stops, police stations, fire stations, corner stores, etc., as well as major landmarks such as rivers, etc., are displayed.
This is a simplified map that does not show the immortal. Therefore, since only the necessary information and no unnecessary information is included, searching for the desired delivery destination is easy and does not require much effort, does not interfere with the safe operation of the vehicle, and is safe and secure. Moreover, it is possible to easily go to the desired delivery destination. In addition, since it is a simple route map, the storage capacity for storing the route map is small, and the storage capacity can be saved. There is no need to store this simple route map in the form of a map; for example, it can be stored in a format that only stores the coordinates of the starting point and ending point of a certain line segment, and when read out, each point is set as a line by a program. You can also connect and play the map in minutes.

In the check at step 280, if the operation switch 41c for displaying the simple route map has not been operated, the process proceeds to step 330, where processing for the case where the other operation switches 416 to 41h have been operated is performed.

First, when the operation switch 41 (+ or 41h is operated, steps 110, 120 or 220,
The one-page delivery destination list displayed on the display device 35 at 230, or the display device 3 at steps 310 and 320.
Page forwarding (operation switch 41g) or page backward operation switch 41h) of the simple route map of the delivery destination displayed at 5 is performed.

When the operation switch 41e or 41f is operated, information indicating the end of delivery (operation switch 41e) or the absence of the delivery destination (operation switch 41f) is sent to the CPU 23,
Perform list modification processing such as marking the delivery destination list as delivered or absent (=j and arranging it after @ in the delivery list to advance the order of undelivered destinations one by one), and The data in the delivery order storage area 63 of the disk 49 is also changed in accordance with this change.The operation switch 41d is also used in combination with the lights 1 to 39 to display the 8th item on the wide area map.
Used to change the delivery order displayed as shown.

Note that the effects shown in the flowchart shown in FIG. 6 are the effects when operating the operation switches 41a to 41h.
Next, when the vehicle approaches the destination, the display device 35 (
Referring to the flowcharts in FIGS. 10(a) and 10(b), we will explain the effect when the map display is automatically switched from a wide-area map to a simple route map that is a map around the destination without operating the operation switch 41. explain.

First, in order to identify how far the own vehicle is from the intended delivery destination, the floppy disk 4
The next delivery destination is read out from the delivery order data stored in advance in the RAM 29 from the delivery order storage area 63 of 9, and the position information (Xl, Yl) of this delivery destination is stored in the delivery destination data file area of the floppy disk 49. 61 (step 410). Next, the current position (Xp, Yp) of the host vehicle is calculated based on latitude and longitude information received from the antenna 55 by the receiver 1153 and supplied from the receiver 153 to the CPU 23 via the interface circuit 51.

(Step 420). Location information of the next delivery destination (Xl, Y
l) and the current position of the own vehicle (Xp).

YFI) to the distance between both positions 1! Calculate the ID (step 430).

After calculating the distance-ID in this way, it is checked whether the map currently displayed on the display device 35 is a wide area map or a simple route map (step 440). In the case of a mode in which a wide area map is displayed, the distance calculated by λ1 is the first predetermined distance DI.

For example, compared to 300 m (step 450), if the distance is within this predetermined distance D1, a simple route map for the next delivery destination is read from the pipe route map storage area 65, and this simple route map is displayed on the display device 35 (step 460.470>.

Since the simple route map for the next delivery destination is selected in this way, the simple route map data is displayed accurately even if there is some error in the position information.

If it is found that the distance is not within the predetermined distance D1 by the comparison of the web 450, the process returns to the previous step without executing the following process (2) and continues displaying the wide area map. Further, if it is checked in step 440 that the simple route map is displayed and the mode is set, the process proceeds to step 480, and it is checked whether the operation switch 41e for delivery has been operated. This operation switch 41e
If not operated, it is checked in step 500 whether the absentee operation switch 41f is operated. If the delivered operation switch 41e or the absentee operation switch 41f is operated, in step 490 or 510, respectively, the data of delivered or absent is recorded at the corresponding delivery destination in the delivery destination list, and The delivery destinations for which this data has been recorded are arranged at the end of the delivery list, and list change processing is performed by moving up the order of undelivered destinations one by one (step 520). Since the delivery order is corrected in this way, when the easy route map for the next delivery destination is displayed, the "easy route map data for the next delivery destination" is selected in steps 460 and 470. Even if there are some errors in the location information, the simple route map data is displayed accurately.

In addition, if the device for detecting the position of the own vehicle is dead reckoning navigation using a gyro, geomagnetic sensor, etc., it is synchronized with the operation of the operation switch 41e or 41f, and the current position data (Xp, YFI) of the own vehicle is detected. The position (Xl, Y2> of the delivery destination just processed may be set and reset, thereby correcting the positional relationship with respect to the next delivery destination.

Further, if it is checked in step 480.500 that the operation switches 41e and 41f are not operated, the process proceeds to step 530, and the distance ll1lD between them is determined by the second predetermined portion 1111D2, for example, 5
It is checked whether it is greater than 00m. This second predetermined portion MD2 is larger than the first predetermined portion 111fD1, and this is used to check whether or not the own vehicle has moved away from the delivery destination.

By checking the vehicle's position in this way, it is intended to absorb variations in the current position detected by the position detection device. If the distance 11D is greater than the second predetermined portion-ID2, step 540.55
0, the wide area map data is read from the wide area map storage area 67 of the floppy disk 49, and the wide area map is displayed on the display device 35. However, if the distance 1111D is less than or equal to the second predetermined distance D2, the display on the display device 35 remains as it is, that is, the simple road map of the delivery destination remains displayed and returns to the original state.

Furthermore, when switching the display from the wide area map to the simple route map in steps 450 to 470, the speaker 4
3, for example, generates a warning sound such as "Bing Pong", and at the time of this switching, the display of the corresponding delivery destination on the wide area map is displayed blinking, so that you can clearly see the delivery destination for the simple route map that will be displayed from now on.J: It can also be displayed as Figure 11 shows this processing flow,
In step 560, an alarm sound is generated from the speaker 43, and in the next step 570, the delivery destination corresponding to the corresponding area, that is, the simple route map that will be displayed from now on, is clearly indicated by flashing. Note that this blinking display may be performed for a certain period of time, that is, about 2.-3 seconds.

[Effects of the Invention] As explained above, according to the present invention, a map of the surrounding area of the destination is displayed according to the position of the own vehicle detected by the position detection means and the order of guidance to the destination. It is possible to accurately display a surrounding map of a location without errors, and to reliably guide the user to a destination, and it is also possible to use relatively low-precision and low-cost position detection means.

[Brief explanation of drawings]

Fig. 1 is a diagram corresponding to the claims of the present invention, Fig. 2 is a block diagram of a vehicle guidance system according to an embodiment of the invention, and Fig. 3 is a front view of an operation display panel used in the vehicle guidance system of Fig. 2. Figure 4 is a memory configuration diagram of delivery destination data and map information stored in a floppy disk used in the vehicle guidance system shown in Figure 2, and Figures 5 and 6 are respectively shown in the vehicle guidance system shown in Figure 2. FIGS. 7 to 9 are flowcharts showing the operation of FIGS. 7 to 9, respectively. FIGS.
1 is a flowchart 1 showing the operation of the vehicle guidance system shown in FIG. 2, respectively. 21..." computer, 23... CPU1
27...ROM, 2.9...RA
M. 31... Display control device, 33... Image memory, 39... Light pen, 41... Operation switch, 47... Floppy disk drive device, 4
9...Floppy disk code open show G1-194GOO (9) 10th cause (a) TART Nizuρ send 141゜translation wave' (Z, VP 'rib 4''i shame 2゜CZp, VP) Distance calculation o =FT vote 7 °0 (-)'l”ly'+1 (simple g-) (A relative) 5O No ≦D1? es

Claims (1)

[Claims] In a device having a display device and guiding to at least one preset destination using a map displayed on the display device, a device surrounding the destination that stores map information of a surrounding area for each of the destinations. Based on the map storage means, the position detection means for detecting the position of the own vehicle, the order of guidance to each of the destinations and the detected position of the own vehicle,
A vehicle guidance device comprising display control means for displaying a surrounding map of a destination to be guided on the display device using map information from a destination surrounding map storage means.