JPS6446612A - On-vehicle goniometer - Google Patents
On-vehicle goniometerInfo
- Publication number
- JPS6446612A JPS6446612A JP20316787A JP20316787A JPS6446612A JP S6446612 A JPS6446612 A JP S6446612A JP 20316787 A JP20316787 A JP 20316787A JP 20316787 A JP20316787 A JP 20316787A JP S6446612 A JPS6446612 A JP S6446612A
- Authority
- JP
- Japan
- Prior art keywords
- distance
- difference
- equation
- vehicle
- mean value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE:To preclude misdetection and to secure the magnetism detection of a vehicle body by detecting an abnormal output of an earth magnetism sensor and deciding the intensity of an intense magnetic field where a vehicle passes from the rising point of the current peak and the output value of the peak point. CONSTITUTION:When the counted values of detected azimuth signals X and Y reach 20, a reference value arithmetic means 101 calculates the reference points of the mean value of outputs X and Y from an equation I and a difference arithmetic means 102 finds the difference R between reinputted azimuth signals X and Y and the mean value of sensor outputs from an equation II. Consequently, it is judged that a peak output is generated, azimuth signals Xn and Yn are inputted newly to find the difference Rt from the mean value of sensor outputs from an equation III, and a magnetism decision means 103 compares the distance Rt with last distance Rt and decides the distance R when the distance Rt is smaller than the distance R to decide that the vehicle is magnetized when the distance is >=450mG, thereby generating a warning.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62203167A JPH0833299B2 (en) | 1987-08-17 | 1987-08-17 | Vehicle compass |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62203167A JPH0833299B2 (en) | 1987-08-17 | 1987-08-17 | Vehicle compass |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6446612A true JPS6446612A (en) | 1989-02-21 |
JPH0833299B2 JPH0833299B2 (en) | 1996-03-29 |
Family
ID=16469558
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62203167A Expired - Lifetime JPH0833299B2 (en) | 1987-08-17 | 1987-08-17 | Vehicle compass |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0833299B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5023799A (en) * | 1989-02-06 | 1991-06-11 | Nissan Motor Company, Limited | Vehicular traveling direction measuring system |
US5131155A (en) * | 1989-01-06 | 1992-07-21 | Nissan Motor Company, Limited | Apparatus and method for measuring forward direction of vehicle |
US6952449B2 (en) | 2000-06-14 | 2005-10-04 | Kddi Corporation | Detection apparatus for road obstructions |
CN102510994A (en) * | 2009-09-26 | 2012-06-20 | 阿尔卑斯电气株式会社 | Geomagnetism detection device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6089300A (en) * | 1983-10-21 | 1985-05-20 | 三菱電機株式会社 | Running information display |
JPS61215915A (en) * | 1985-03-22 | 1986-09-25 | Hitachi Ltd | Azimuth detecting device |
-
1987
- 1987-08-17 JP JP62203167A patent/JPH0833299B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6089300A (en) * | 1983-10-21 | 1985-05-20 | 三菱電機株式会社 | Running information display |
JPS61215915A (en) * | 1985-03-22 | 1986-09-25 | Hitachi Ltd | Azimuth detecting device |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5131155A (en) * | 1989-01-06 | 1992-07-21 | Nissan Motor Company, Limited | Apparatus and method for measuring forward direction of vehicle |
US5023799A (en) * | 1989-02-06 | 1991-06-11 | Nissan Motor Company, Limited | Vehicular traveling direction measuring system |
US6952449B2 (en) | 2000-06-14 | 2005-10-04 | Kddi Corporation | Detection apparatus for road obstructions |
CN102510994A (en) * | 2009-09-26 | 2012-06-20 | 阿尔卑斯电气株式会社 | Geomagnetism detection device |
Also Published As
Publication number | Publication date |
---|---|
JPH0833299B2 (en) | 1996-03-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term | ||
FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 12 Free format text: PAYMENT UNTIL: 20080329 |