JPS6068415U - Latitude and longitude detection device for vehicles - Google Patents

Abstract

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

Description

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the circuit configuration of the vehicle latitude and longitude detection device of this invention, Fig. 2 is a three-dimensional diagram showing the vehicle running state in three dimensions, and Fig. 3 is an explanatory diagram of the direction detection section. be. 1...Setting device, 2...Direction detection unit, 3
... Distance detection section, 4 ... Tilt sensor,
5... Arithmetic unit, 6... Declination data storage circuit, 7... Display unit.

Claims (1)

[Claims for Utility Model Registration] Latitude and longitude data φNS, φ of the starting point in a secondary coordinate system whose coordinate axis is the azimuth on the horizon. Setting device 1 to set 8
a direction detection unit 2 that detects the horizontal component of the earth's magnetism and outputs direction data θA indicating the direction of travel of the vehicle with respect to the horizontal component direction of the earth's magnetism; Declination angle data θ at . an adder 501 that adds up and outputs direction data θ indicating the traveling direction of the vehicle with respect to the reference direction in the secondary coordinate system; and a distance that detects the traveling distance of the vehicle every unit time and indicates the traveling distance of the unit. A distance detection unit 3 that outputs data Δl, and a first unit that calculates the coordinate component INt1w of the current point as seen from the starting point based on the direction data θ from the adder 501 and the distance data Δl from the distance detection unit 3. Arithmetic units 502, 50
5 to 508, and the first calculation unit 502, 505 to 508
Coordinate component data of the current point viewed from the starting point lH*l
The latitude, longitude φN, φ at the current point based on the latitude and longitude data φN S tφES of the starting point set in the setting device 1. A second calculation unit 509,5 that calculates
10, and stores declination data corresponding to the address using latitude and longitude as an address, and the second calculation unit 5
Latitude and longitude data φ at the current location from 09,510. φ. and the corresponding declination data θ. and a declination data storage circuit 6 which outputs the declination angle data to the adder 501, and outputs the calculation results of the second calculation sections 509 and 510 as detection data. Latitude and longitude detection device for vehicles.