JPS5884518U

JPS5884518U - In-vehicle current position display device

Info

Publication number: JPS5884518U
Application number: JP18017281U
Authority: JP
Inventors: 岡崎　俊一
Original assignee: 三菱電機株式会社
Priority date: 1981-12-01
Filing date: 1981-12-01
Publication date: 1983-06-08

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来の車載用現在位置表示装置を示すブロック
図、第２図は地磁気センサの動作原理の説明図、第３図
は第１図の装置における動行を説明するための車速及び
地磁気信号の波形図、第４゛図は本考案に係る車載用現
在位置表示装置を示すブロック、図、第５図は第４図の
装置における動作を説明するための車速、地磁気及び傾
斜角度を示す各信号の波形図である。１・・・・・・地磁気センサ、１ａ・・・・・・Ｘ方向
成分信号、−１ｂ・・・・・・Ｙ方向成分信号、２・・
・・・・車速センサ、３・・・・・・演算回路、４・・
・・・・表示器、５・・・・・・情報入力部、８・・・
・・・波形整形回路、１０．１２・・・・・・増幅器、
１１・・・・・・傾斜角センサ、１３・・・・・・入力
信号切換回路、１４・・・・・・Ａ／Ｄコンバータ、１
５・・・・・・マイクロコンピュータ、１６．１８・・
・・・・インタフェイス回路。尚、図中、同一符号は同
−又は相当部分を示す。Fig. 1 is a block diagram showing a conventional in-vehicle current position display device, Fig. 2 is an explanatory diagram of the operating principle of a geomagnetic sensor, and Fig. 3 is a diagram showing vehicle speed and geomagnetism to explain the operation of the device in Fig. 1. A signal waveform diagram, Fig. 4 is a block diagram showing the vehicle-mounted current position display device according to the present invention, and Fig. 5 shows vehicle speed, geomagnetism, and inclination angle to explain the operation of the device in Fig. 4. FIG. 3 is a waveform diagram of each signal. 1...Geomagnetic sensor, 1a...X direction component signal, -1b...Y direction component signal, 2...
...Vehicle speed sensor, 3...Arithmetic circuit, 4...
... Display unit, 5 ... Information input section, 8 ...
...Waveform shaping circuit, 10.12...Amplifier,
11... Tilt angle sensor, 13... Input signal switching circuit, 14... A/D converter, 1
5...Microcomputer, 16.18...
...Interface circuit. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

(1) A geomagnetic sensor for detecting the direction of travel of the vehicle, a vehicle speed sensor for detecting the vehicle speed by generating pulses with a frequency proportional to the vehicle speed, and an arithmetic circuit that calculates the current position based on the detection signals from these sensors. An in-vehicle current position display device having a display device that displays the current position based on the calculation result of the calculation circuit includes a tilt angle sensor that detects the tilt angle of the vehicle body in the longitudinal direction when climbing up and exiting the vehicle; Based on the output signal from the inclination angle sensor, the travel distance input based on the geomagnetic signal error from the geomagnetic sensor and the map, which is caused by the tilt of the vehicle body in the longitudinal direction when the vehicle is climbing up and down, and the actual traveling distance. An in-vehicle current position display device comprising: error correction means for correcting an error in distance.

(2) The vehicle-mounted current position display device according to claim 1, wherein the error correction means is a microcomputer including the arithmetic circuit.