EP0183735A1 - Boussole electronique - Google Patents

Boussole electronique

Info

Publication number
EP0183735A1
EP0183735A1 EP85902429A EP85902429A EP0183735A1 EP 0183735 A1 EP0183735 A1 EP 0183735A1 EP 85902429 A EP85902429 A EP 85902429A EP 85902429 A EP85902429 A EP 85902429A EP 0183735 A1 EP0183735 A1 EP 0183735A1
Authority
EP
European Patent Office
Prior art keywords
digital
electronic compass
fully electronic
analog
magnetic field
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.)
Ceased
Application number
EP85902429A
Other languages
German (de)
English (en)
Inventor
Kurt Tschannen
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0183735A1 publication Critical patent/EP0183735A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
    • G01C17/02—Magnetic compasses
    • G01C17/28—Electromagnetic compasses
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2805—Parameters or conditions being sensed
    • A47L9/281—Parameters or conditions being sensed the amount or condition of incoming dirt or dust
    • A47L9/2815—Parameters or conditions being sensed the amount or condition of incoming dirt or dust using optical detectors

Definitions

  • the present invention relates to an electronic compass with a digital and / or analog display.
  • the compass is an instrument for determining the direction of the sky. Depending on its type of use, it serves as a steering or bearing compass.
  • a compass consists of a housing, in the center of which the so-called “tiller” is attached. This is a vertical metal pin with a hard metal tip on which the compass rose or the magnetic needle is placed.
  • the compass rose usually has a double division on its edge, namely an inner one in lines, the wind rose and an outer one in degrees. This counts from north to east from 0 ° to 36 ⁇ ° 0
  • a compass is also known which has an annular scale which rotates simultaneously with the compass needle. The degrees are read using a built-in prism, the compass not being read _ 9
  • a correction by adding or subtracting the variation is required for the location.
  • a watch which has a display for hours and a device for determining the direction in the magnetic earth field.
  • European publication No. 0 091 000 describes a device for measuring the earth's magnetic field as a navigation aid for the driver of a motor vehicle, in particular for orientation in a city. As it was drawn and described, it turned out that it is a different sensor principle without a bridge circuit, which falsifies the result when the vehicle is tilted because the three sensors are not a measure of the horizontal plane which is necessary for a course determination. The electronic and mechanical circuit solution is not described at all. This system does not work in a vehicle, since obviously neither a deviation measurement nor its correction is carried out. The likewise necessary correction of the location deviation is neither mentioned nor described.
  • the purpose of the present invention is a digital and / or analog indicating, fully electronic compass which eliminates the disadvantages of a needle or gyro compass. - -
  • the invention relates to a digital and / or analog indicating, fully electronic compass with at least one magnetic field sensor which is connected to a following electronic circuit, the magnet sensor on the principle of the Hall effect, the field plate, the detuning of a Wheatstone bridge, or the change in resistance, while the subsequent electronic circuit consists of at least one operational amplifier, voltage stabilization, temperature compensation and an analog / digital converter, which amplifies the change in value of the magnetic field sensor and determines this in digital and / or analog signals Converts large ones and in turn displays them digitally and / or optically and / or acoustically.
  • FIG. 1 shows a schematic top view of an electronic compass
  • 2 shows a cross section along the line A - A in FIG. 1 drawn on a greatly enlarged scale
  • 3 is a block diagram of an electronic compass
  • K is a block diagram for a compass with electromotive tracking and digital display
  • FIG. 5 shows a block diagram of a fully electronic, tilt-independent compass
  • FIG. 6 shows a schematic plan view of a display sheet of a watch with a built-in, invisible compass
  • the compass consists of an inner 2 and an outer housing 1. - b -
  • housing 2 carries the cardanic bearing 3, to which at least one magnetic field sensor 4 is attached.
  • the inner housing 2 is filled with a damping liquid 5 and is rotatably mounted in its horizontal plane by 190 ° clockwise and by 190 ° counterclockwise, in such a way that the magnetic field sensor 4 is mounted in the outer housing 1, rotatable and graded Schei ⁇ be 6, which is connected via a coupling device 7 to the inner housing 2 and can be set to any number of degrees from 1 to 360 °.
  • FIG. 3 shows the operational amplifier according to FIG. 3, which consists of an integrated circuit which amplifies the signals emitted by the magnetic field sensor 4 and converts them into voltage values of at least 0 to 360 mV.
  • an analog-digital - Transducer 9 which makes these voltage values visible on a LCD or LED display 10 on the face side of the outer casing 1 of the compass as a three-digit degree display.
  • the signals to and from the sensor can also be pulsed.
  • the outer housing 1 has the switch 12 for switching from failing to righting.
  • the alphanumeric display M 13 or T 14 then appears in addition to the three-digit degree 11, according to FIG. 1, M being used for declining and T for legal.
  • the adjustment 15 for adjusting the variation is attached to the outer housing 1, the reading thereof being read on the disc while the button 16 'is pressed. play 10 can be read.
  • the procedure is such that the compass is only held in the direction of the point to be sighted, with the number of degrees, i.e. the azimuth appears, which can only be read off.
  • the disk 6 is rotated until its graduation with the desired number of degrees is above the marking line 17.
  • the compass user then rotates with the compass until the light emitting diode 18 lights up.
  • the pre-selected course has been reached.
  • the device can also be designed in such a way that a lighting up of the diode 18 means that the preselected course has been deviated from.
  • the operational amplifier 8 is additionally followed by a comparator 19, consisting of an integrated circuit, which, when reached, e.g. With a certain voltage value of 0 mV, the light-emitting diode 18 lights up and thus announces that the preselected course has been reached.
  • a comparator 19 consisting of an integrated circuit, which, when reached, e.g. With a certain voltage value of 0 mV, the light-emitting diode 18 lights up and thus announces that the preselected course has been reached.
  • the entire electronics are supplied via at least one voltage stabilizer 20 by means of an accumulator 21 and / or by means of solar cells or else by means of a battery.
  • the 4 consists of at least one magnetic field sensor 4, the signal of which is fed to an operational amplifier 8. This is followed by a minimum-maximum detector 22, the maximum or minimum value of which is sent to a differential amplifier 23.
  • the signal of the differential amplifier 23 controls an electromotive drive 24, on the axis 25 of which a code disk 26 and the compass rosette 27 are attached.
  • the sensor 4 is connected to the axis 25 in such a way that it also rotates.
  • the scanning unit 28 supplies the coded signals to the electronics unit 29, which carries out the necessary conversion and numerically displays the azimuth on the display IQ.
  • the compass electronics are integrated in the watch electronics and arranged in such a way that the maximum sensor output signal corresponds to the north direction 35 indicated on the watch. If the clock is turned in the north direction, the bars 35 attached to the liquid crystal display or the dichroic display 34 become arrow-shaped, or else circular radial in accordance with the Strength of the sensor signal controlled and made visible accordingly. If the number of driven bars 35 no longer increases during the turning process, north direction 33 is reached. All directions can then be read off immediately on the collar 36. This procedure also allows the watch to be held at an angle during the direction finding process. The compass can be switched on and off with the button 37.
  • the adjusting ring 56 with the graduation can be rotatably mounted and connected to the compass sensor in such a way that when the adjusting ring 36 is rotated, the sensor also rotates by the same angle. As a result, any course can be selected.
  • the adjusting ring 36 is to be turned until the desired course is above the course mark 38.
  • the course preselected in this way is reached when the number of visible bars 35 no longer increases during the bearing process. 0
  • a numerical display of the respective azimuth can take place.
  • the magnetic pulses of the clock can be blanked out in such a way that they can no longer disrupt the correct compass display.
  • the dynamic signal can be routed through coils or can be fed directly to the sensor as a variation of the voltage.
  • azimuth measurement is independent of position as well as inclination.
  • the processing and calculation of the signals takes place in a microprocessor.
  • the advantages of the compass according to the invention can be seen in the fact that, in contrast to the known gyro-compass systems, it does not have an increasing error and does not have to be reset after a conventional magnetic compass either before or during the trip .
  • the compasses when rotating the compasses there is no leading or trailing of the display. Declination and deviation errors can be automatically corrected. For the first time, a legal course display is also possible.
  • the area of use extends to ground, water, air and space vehicles, as well as pocket or watch compasses.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Measuring Magnetic Variables (AREA)
  • Electric Clocks (AREA)

Abstract

La boussole électronique possède au moins un détecteur de champ magnétique (4) connecté à sa suite à un circuit électronique. Le circuit électronique qui suit le détecteur est constitué par au moins un amplificateur opérationnel (8), un stabilisateur de tension (20), un moyen de compensation de température et un convertisseur analogique-digital (9). Les changements de valeur du détecteur de champ magnétique (4) seront ainsi amplifiés et transformés en signaux digitaux et/ou analogiques d'une certaine amplitude. Les signaux sont exploités sous forme digitale et/ou optique et/ou acoustique. On peut aussi utiliser un microprocesseur.
EP85902429A 1984-05-22 1985-05-22 Boussole electronique Ceased EP0183735A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2504/84 1984-05-22
CH250484 1984-05-22

Publications (1)

Publication Number Publication Date
EP0183735A1 true EP0183735A1 (fr) 1986-06-11

Family

ID=4235286

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85902429A Ceased EP0183735A1 (fr) 1984-05-22 1985-05-22 Boussole electronique

Country Status (7)

Country Link
EP (1) EP0183735A1 (fr)
JP (1) JPS61502211A (fr)
AU (2) AU4353085A (fr)
DK (1) DK29986A (fr)
FI (1) FI88205B (fr)
NO (1) NO860212L (fr)
WO (1) WO1985005444A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3082530A (en) * 1960-04-28 1963-03-26 Hopf Paul Drilling and like tools
CH672195A5 (fr) * 1986-09-18 1989-10-31 Wild Heerbrugg Ag
GB8704560D0 (en) * 1987-02-26 1987-04-01 Nautech Ltd Hand bearing compass
JP2935047B2 (ja) * 1990-03-13 1999-08-16 カシオ計算機株式会社 電子コンパス
US5269065A (en) * 1990-03-20 1993-12-14 Casio Computer Co., Ltd. Compass including means for displaying constellation data
US5216816A (en) * 1990-03-20 1993-06-08 Casio Computer Co., Ltd. Compass
CH682109A5 (fr) * 1990-07-13 1993-07-15 Recta Sa
EP0503214A1 (fr) * 1991-03-11 1992-09-16 CONTRAVES ITALIANA S.p.A. Dispositif d'orientation
US5191792A (en) * 1991-07-01 1993-03-09 Recta Ag Instrument for indicating altitude or direction

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1065454A (fr) * 1976-06-01 1979-10-30 Lorne A. Kuehn Dispositif d'orientation
IT1073691B (it) * 1976-08-26 1985-04-17 Importazioni Esportazioni Rapp Perfezionamento nelle bussole statiche
JPS5599016A (en) * 1979-01-24 1980-07-28 Nippon Telegr & Teleph Corp <Ntt> Measuring apparatus for position coordinates
JPS55101010A (en) * 1979-01-26 1980-08-01 Nippon Telegr & Teleph Corp <Ntt> Photoelectric type position detecting system
CA1127304A (fr) * 1979-01-24 1982-07-06 Sachinobu Shimizu Appareil pour determiner les coordonnees de position en utilisant le magnetisme terrestre comme reference directionnelle
US4255866A (en) * 1979-10-30 1981-03-17 The United States Of America As Represented By The Secretary Of The Navy Nonmagnetic compass
JPS5824810A (ja) * 1981-08-05 1983-02-14 Nippon Soken Inc 方位検出装置
FR2515838A1 (fr) * 1981-10-30 1983-05-06 Omega Brandt & Freres Sa Louis Piece d'horlogerie comportant un dispositif d'orientation
JPS58135412A (ja) * 1982-02-04 1983-08-12 Nippon Denso Co Ltd 方位演算装置
US4546551A (en) * 1983-03-24 1985-10-15 Prince Corporation Electrical control system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8505444A1 *

Also Published As

Publication number Publication date
WO1985005444A1 (fr) 1985-12-05
FI860317A (fi) 1986-01-22
AU4353085A (en) 1985-12-13
JPS61502211A (ja) 1986-10-02
DK29986D0 (da) 1986-01-21
FI860317A0 (fi) 1986-01-22
AU6924491A (en) 1991-03-21
DK29986A (da) 1986-01-21
FI88205B (fi) 1992-12-31
NO860212L (no) 1986-01-22

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