JPS6446612A - On-vehicle goniometer - Google Patents

On-vehicle goniometer

Info

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
Application number
JP20316787A
Other languages
Japanese (ja)
Other versions
JPH0833299B2 (en
Inventor
Yasushi Ueno
Kenji Takano
Kazuhiko Yoshida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP62203167A priority Critical patent/JPH0833299B2/en
Publication of JPS6446612A publication Critical patent/JPS6446612A/en
Publication of JPH0833299B2 publication Critical patent/JPH0833299B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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.
JP62203167A 1987-08-17 1987-08-17 Vehicle compass Expired - Lifetime JPH0833299B2 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
US5414411A (en) Pulse induction metal detector
CA2179993A1 (en) Metal detection system
US4130792A (en) Metal detector with feedback tuning
US5001777A (en) Police radar detector
JPS6446612A (en) On-vehicle goniometer
US5892226A (en) Traffic control systems
US4016486A (en) Land mine detector with pulse slope, width and amplitude determination channels
US5107250A (en) Detection of moving objects
ES2177469A1 (en) Device for detecting the presence of objects in a blind angle of a motor vehicle
US4337528A (en) Moving vehicle seismic target detector
US4673913A (en) Zigzag running warning system for automotive vehicles
JPS6446611A (en) On-vehicle goniometer
JPS6446610A (en) Azimuth meter for vehicle
ATE211845T1 (en) METHOD FOR AVOIDING FALSE ALARMS IN A FIRE ALARM SYSTEM, AND FIRE ALARM SYSTEM FOR IMPLEMENTING THE METHOD
JPS57122310A (en) Magnetic bearing meter
JPS6425026A (en) Detecting apparatus of leakage of water
JPH0298668A (en) Detection for rotary body
GB1270821A (en) Ferromagnetic metal detector
JPS57108708A (en) Azimuth detector
JPS6251779B2 (en)
JPS56126787A (en) Measurement of depth of underground body
SU1270116A1 (en) Method of eddy current check
JPS6423112A (en) Current vehicle position detection system
TW340908B (en) The non-obtrusive weapon detection system
GB1390606A (en) Vehilce detector systems

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