JPS63148824U

JPS63148824U -

Info

Publication number: JPS63148824U
Application number: JP4098187U
Authority: JP
Priority date: 1987-03-20
Filing date: 1987-03-20
Publication date: 1988-09-30

Description

[Brief explanation of drawings]

第１図は本考案が適用される車両用地図ガイド
システムを示すブロツク図、第２図は本考案の一
実施例を示す図、第３図はこの実施例における方
向センサの出力波形図、第４図はＡ―Ｄ変換器及
び位置計算用ＣＰＵの信号波形図、第５図は上記
位置計算用ＣＰＵにおける方位角の演算過程を示
す図、第６図ａ，ｂは夫々第１、第２の方向セン
サ５ａ，５ａ′からの着磁前と着磁後の方位信号
を示す図、第７図及び第８図はそれぞれ方向セン
サに対する着磁の影響度を示すデータの特性図、
第９図及び第１０図は位置計算用ＣＰＵの動作を
示すフローチヤートである。４ａ……位置計算用ＣＰＵ、５ａ，５ａ′……
第１、第２の方向センサ、５ｂ……移動量センサ
。 FIG. 1 is a block diagram showing a vehicle map guide system to which the present invention is applied, FIG. 2 is a diagram showing an embodiment of the present invention, and FIG. 3 is an output waveform diagram of the direction sensor in this embodiment. Figure 4 is a signal waveform diagram of the A-D converter and the position calculation CPU, Figure 5 is a diagram showing the azimuth calculation process in the position calculation CPU, and Figures 6a and b are the first and second signals, respectively. 7 and 8 are characteristic diagrams of data showing the degree of influence of magnetization on the direction sensors, respectively,
9 and 10 are flowcharts showing the operation of the position calculation CPU. 4a... CPU for position calculation, 5a, 5a'...
First and second direction sensors, 5b...Movement amount sensor.

Claims

[Scope of Claim for Utility Model Registration] (1) Display means for displaying the current position or direction of movement of the vehicle, etc., map calculation means for inputting a road map or a signal indicating the current position of the vehicle to the display means, and the map In a map guide system comprising a position calculation means for inputting current position data of a vehicle into the calculation means, and a position detection means for inputting a signal indicating the direction or movement amount of the vehicle to the position calculation means, the position calculation means is The position detecting means includes a CPU for position calculation, and the position detecting means includes at least first and second direction sensors and a movement amount sensor, and the first and second direction sensors are arranged at different positions affected by magnetization of the vehicle body. The vehicle is attached to the vehicle, and is configured to provide each of the position calculation CPUs with an azimuth signal corresponding to the azimuth of the vehicle, and the position calculation CPUs calculate a corrected azimuth from the azimuth signal. Automatic magnetization correction device for compass. (2) A compass according to claim 1 of the utility model registration claim, characterized in that the second direction sensor is attached to the sunroof of the vehicle body, and the first direction sensor is attached to another part of the roof. automatic magnetization correction device.