JP2000205874A - Car position display system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform correction to a point which a user is interested, especially related to such important border as highway and river, etc. SOLUTION: A car position is specified from a position information acquired from a GPS(global positioning system) satellite 1 using a GPS receiver 2 mounted on a car, which is displayed on an electronic map of a display part 4. Using a procedure of a district division process part 7a of a car position display system, a table wherein the region a car is traveling is divided into a plurality of districts is prepared with an MPU 3 in advance. A user inputs such dynamic information as in which districts the car is traveling from an input part 6 of an automatic vehicle monitor(AVM) device 5. The inputted dynamic information is acquired with the MPU 3 in the procedure of a dynamic information acquiring process part 7b, the dynamic information acquired in the procedure of car position correcting process part 7c is compared with a car position acquired from the GPS receiver 2, and if there is an error, the car position is corrected on the road in the district inputted from the AVM device 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle position display system which prevents an error when displaying vehicle position information obtained from a GPS on an electronic map from being over an important boundary.

[0002]

2. Description of the Related Art GPS (Global Positioning System)
In a vehicle display system that displays the vehicle position on an electronic map for car navigation from the vehicle position information obtained from the vehicle, the display position of the vehicle is determined by a matching method based on the vehicle position of GPS and road data on the map. Correct on the appropriate road. However, according to this method, when there is an important boundary such as a highway or a river in the correction range, there is a problem that the correction may be made beyond this.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and has been made in consideration of the following circumstances.
Particularly, it is an object of the present invention to correctly correct an important boundary such as a highway or a river.

[0004]

[Means for Solving the Problems] GPS (Global Positio
G that obtains location information from satellites for ning System)
A vehicle position display device comprising a PS receiver and a display device for displaying a vehicle position on an electronic map, and displaying a vehicle position obtained from vehicle position information obtained from a GPS on an electronic map, wherein the AVM mounted on the vehicle is provided. (Automatic Vehicl
e Monitoring) dynamic information acquisition means for acquiring the dynamic information of the vehicle from the device, district dividing means for dividing the corresponding area on the electronic map into a plurality of districts, and dynamic information of the vehicle from the AVM device. A vehicle position correcting means for correcting the vehicle position is provided in the area where the vehicle is located, and the vehicle position obtained from the GPS is corrected in the corresponding area.

[0005] The corresponding area is defined as an expressway, and the area is divided into districts by line segments for each upper and lower lane of the expressway on the electronic map.

[0006] The vehicle position correcting means includes a predetermined GPS.
Is set, and when the correction amount of the vehicle position obtained from the GPS exceeds the error range, the correction is not performed.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic block diagram of a main part of an embodiment of a vehicle position display system according to the present invention. FIG. 2 is a conceptual diagram of division of a corresponding area for explaining one embodiment of a vehicle position display system according to the present invention. The position of the vehicle is specified by the GPS receiver 2 mounted on the vehicle from the position information acquired from the artificial satellite 1 for GPS. The vehicle position is displayed on the electronic map of the display unit 4 composed of an LCD or the like. The vehicle position display system is provided with a district division processing unit 7a, and the MPU is preliminarily determined according to the procedure.
According to 3, a table is created in which the relevant area 20 in which the vehicle travels is divided into a plurality of districts 21 and 22 serving as correction areas. The districts 21 and 22 to be divided are set by excluding an important part such as the river 23 as a boundary. The user (the driver of the vehicle or the like) inputs dynamic information such as the area in which the vehicle is traveling, for example, the area 21 from the input unit 6 of the AVM device 5 mounted on the vehicle. The input dynamic information is acquired by the MPU 3 by the procedure of the dynamic information acquisition processing unit 7b. The MPU 3 compares the dynamic information acquired by the procedure of the vehicle position correction processing unit 7c with the vehicle position obtained from the GPS receiver 2, for example, the point 22a of the district 22, and if there is an error, the vehicle position is converted from the AVM. District 21 entered
Is corrected to the nearest road 21a from the point 22a.
Note that a GPS error range is set in advance in the vehicle position correction processing unit 7c, and when the correction amount of the vehicle position obtained from the GPS exceeds the error range, the dynamic information input from the AVM device 5 is used. Is corrected, and the correction is not performed.

FIG. 3 is a conceptual diagram of division of a corresponding area for explaining another embodiment of the vehicle position display system according to the present invention. As another embodiment of the vehicle position display system, a corresponding area where the vehicle travels is defined as an expressway 30, and the division of the area into a correction area is performed by using an upline of the expressway 30 on an electronic map. Minutes 31a, 31b, 31
c,..., down line segments 32a, 32b, 32c,.
And Then, in the same manner as described above, the dynamic information of the vehicle such as the upper and lower routes, for example, line segment 3 from the AVM device 5 for each expressway.
Enter 2b. The input dynamic information is acquired by the dynamic information acquisition processing unit 7b of the vehicle position display system. MP
In U3, the obtained dynamic information is compared with the vehicle position obtained from the GPS receiver 2, for example, the point 33a off the highway, by the procedure of the vehicle position correction processing unit 7c. If there is an error, the vehicle position is determined. The point 33 closest to the point 33a of the designated line segment 32b of the expressway input from the AVM
Correct to ba. This makes it possible to avoid erroneous correction to other general roads and points while traveling on the expressway, and to correct the vehicle position on the correct highway to the correct route.

[0009]

As described above, a GPS receiver for acquiring position information from a GPS artificial satellite and a display device for displaying a vehicle position on an electronic map are provided. In a vehicle position display device for displaying the obtained vehicle position on an electronic map, a dynamic information obtaining means for obtaining dynamic information of the vehicle from an AVM device mounted on the vehicle, and a corresponding area on the electronic map being divided into a plurality of areas. And a vehicle position correcting means for correcting the vehicle position in the area where the vehicle is located based on the dynamic information of the vehicle from the AVM device, and converting the vehicle position obtained from the GPS to the corresponding area. Correct within. As a result, it is possible to prevent the correction to be made to the district unintended by the user, and to perform the correction to the correct district intended by the user without making the correction that jumps over an important boundary such as a highway or a river. Becomes

[Brief description of the drawings]

FIG. 1 is a schematic block diagram of a main part of an embodiment of a vehicle position display system according to the present invention.

FIG. 2 is a conceptual diagram of division of a corresponding area for explaining one embodiment of a vehicle position display system according to the present invention.

FIG. 3 is a conceptual diagram of division of a corresponding area for explaining another embodiment of the vehicle position display system according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Artificial satellite 2 GPS receiver 3 MPU 4 Display part 5 AVM device 6 Input part 7a District division processing part 7b Dynamic information acquisition processing part 7c Vehicle position correction processing part 20 Corresponding area 21, 22 District 23 River 30 Expressway 31a, 31b , 31c line segment 32a, 32b, 32c line segment 33a

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Hirotaka Ariga 1116 Suenaga, Takatsu-ku, Kawasaki City Inside Fujitsu General Co., Ltd. (Reference) 2F029 AA02 AB07 AC02 AC14 AD02 5H180 AA01 FF05 FF22 FF27 FF33 FF37 5J062 AA05 BB01 CC07 HH05 9A001 JJ11 JJ77 JJ78 LL02

Claims (3)

[Claims] 1. A vehicle comprising: a GPS receiver for acquiring position information from a GPS artificial satellite; and a display device for displaying a vehicle position on an electronic map, wherein the vehicle position acquired from the vehicle position information obtained from the GPS is displayed on an electronic map. In the vehicle position display device displayed above, dynamic information acquiring means for acquiring dynamic information of the vehicle from an AVM device mounted on the vehicle, and district dividing means for dividing a corresponding area on the electronic map into a plurality of districts; A vehicle position correcting means for correcting a vehicle position in a region where the vehicle is located based on dynamic information of the vehicle from the AVM device, and correcting the vehicle position obtained from GPS to the corresponding region. Vehicle position display system. 2. The vehicle position display system according to claim 1, wherein the corresponding area is an expressway, and the area is divided into districts on the electronic map for each of upper and lower lanes of the expressway. The vehicle position correcting means includes a predetermined GP.
2. The vehicle position display system according to claim 1, wherein an error range of S is set, and when the correction amount of the vehicle position obtained from the GPS exceeds the error range, the correction is not performed. .