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DE3232272A1 - Barometric altimeter for use in vehicles - Google Patents

Barometric altimeter for use in vehicles

Info

Publication number
DE3232272A1
DE3232272A1 DE19823232272 DE3232272A DE3232272A1 DE 3232272 A1 DE3232272 A1 DE 3232272A1 DE 19823232272 DE19823232272 DE 19823232272 DE 3232272 A DE3232272 A DE 3232272A DE 3232272 A1 DE3232272 A1 DE 3232272A1
Authority
DE
Germany
Prior art keywords
lock
vehicle
altimeter
vehicles
coupled
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.)
Withdrawn
Application number
DE19823232272
Other languages
German (de)
Inventor
Paul Dr.rer.nat. 6900 Heidelberg Müller
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.)
Rockwell Collins Deutschland GmbH
Original Assignee
Teldix GmbH
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 Teldix GmbH filed Critical Teldix GmbH
Priority to DE19823232272 priority Critical patent/DE3232272A1/en
Publication of DE3232272A1 publication Critical patent/DE3232272A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
    • G01C5/06—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels by using barometric means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
    • G01D3/02—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for altering or correcting the law of variation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/08—Means for indicating or recording, e.g. for remote indication

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Technology Law (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

The subject-matter of the application is a barometric altimeter which is carried in vehicles. According to the invention, it contains a locking element with which pressure changes can be excluded from its display. This locking element is coupled to the vehicle in such a way that it is actuated when the vehicle stops and then does not permit pressure changes which occur to be displayed.

Description

Barometrischer Höhenmesser zum Mitrthren Barometric altimeter for listening

in Fahrzeugen Die Erfindung betrifft einen barometrischen Höhenmesser zum Mitführen in Fahrzeugen. in vehicles The invention relates to a barometric altimeter to be carried in vehicles.

Es sind barometrische Höhenmesser zum Einbau in Kraftfahrzeuge auf dem Markt, um dem Fahrer die augenblickliche ribhe seines Standorts (bzw. Fahrorts), insbesondere bei Fahrten im Gebirge, anzuzeigen. Da diese Höhenmesser auch auf wetterbedingte Druckschwankungen reagieren, kann die jeweils angezeigte Höhe auch bei richtiger Einstellung des Höhenmessers bei Fahrtbeginn verfälscht sein.There are barometric altimeters for installation in motor vehicles the market, in order to give the driver the current ribhe of his location (or driving location), especially when driving in the mountains. As this altimeter is also based on weather conditions React to pressure fluctuations, the respectively displayed height can also be correct The setting of the altimeter at the start of the journey may be incorrect.

Der Erfindung liegt die Aufgabe zugrunde, die Anzeigegenauigkeit solcher im Fahrzeug mitgeführter Uöhenmesser zu verbessern.The invention is based on the object of improving the display accuracy of such to improve height gauges carried in the vehicle.

Zur Lösung dieser Aufgabe wird ein barometrischer Höhenmesser vorgeschlagen, der dadurch gekennzeichnet ist, daß er eine Sperre enthält, um Druckänderungen von seiner Anzeige während der 3etätigung der Sperre auszuschließen und daß diese Sperre mit dem Fahrzeug gekoppelt ist derart, daß diese durch ein bei Fahrzeughalt wirksames Kriterium betätigt IST.To solve this problem, a barometric altimeter is proposed, which is characterized in that it contains a lock to prevent pressure changes from exclude his display during the 3activation of the lock and that this lock is coupled to the vehicle in such a way that it is effective when the vehicle is stopped Actual criterion is activated.

Durch die Erfindung wird erreicht, daß wetterbedingte Druckänderungen während der Standzeit des Fahrzeugs von der Anzeige des Höhenmessers ausgeschaltet werden. Diese Standzeiten und damit die wetterbedingten Einflüsse in diesen Zeiten können im Vergleich zu der Fahrzeit durchaus erheblich sein.The invention achieves that weather-related pressure changes switched off from the display of the altimeter while the vehicle is stationary will. These downtimes and thus the weather-related influences in these times can be quite significant compared to the travel time.

Als Kriterium für Fahrzeughalt kann z.B. das Ausbleiben von Impulsen eines einem Fahrzeugrad zugeordneten Sensors sein, der eine Impulsfolge entsprechend der Radgeschwindigkeit abgibt. Bei Verwendung eines Antiblockierreglers werden solche Geschwindigkeitssensoren vorgesehen. Da jedoch heute der Motor eines Autos selten lange bei Halt läuft, kann man den Fahrzeughalt auch vom Tachometer bzw.The lack of impulses, for example, can be used as a criterion for stopping the vehicle a sensor assigned to a vehicle wheel, which corresponds to a pulse train the wheel speed emits. When using an anti-lock regulator, such Speed sensors provided. However, since today the engine of a car is rare if the vehicle is stopped for a long time, the vehicle can also be stopped from the speedometer or

seinem Antrieb ableiten. Schließlich kann man auch die Ausschaltung der Zündung als Haltkriterium werten.derive his drive. Finally, you can also turn it off the ignition as a stopping criterion.

Am einfachsten ist die Erfindung bei barometrischen Höhenmessern anwendbar, bei denen Druckänderungen Impulse (Inkremente) mit in Abhängigkeit von der Änderungsrichtung unterschiedlicher Polarität auslösen, die zur Verstellung der Anzeige dienen. Hier ist die Sperre ein Tor, das bei Fahrzeughalt geschlossen wird und damit Druckänderungen während des Fahrzeughalts von der Anzeige ausschließt. Bei einer analogen Druckanzeige kann der Antrieb für das Anzeigeelement eine Kupplung enthalten, die bei Fahrzeughalt geöffnet wird. Bei digitaler Anzeige der Höhe kann man auch einen Minicomputer verwenden, der bei Fahrzeughalt die dann vorhandene Anzeige und den zugehörigen Meßwert festhält und bei erneutem Fahrtbeginn die Meßwerte bei beginn des Altes und Wiederbeginn der Fahrt vergleicht, die Differenz ermittelt und diese Differenz bei den nun angezeigten Werten berücksichtigt.The invention is most easily applicable to barometric altimeters, where pressure changes impulses (increments) depending on the direction of change trigger different polarity, which are used to adjust the display. here the lock is a gate that is closed when the vehicle is stopped and thus pressure changes excludes from the display while the vehicle is stopped. With an analog pressure display the drive for the display element can contain a clutch that stops when the vehicle is stopped is opened. If the altitude is displayed digitally, a minicomputer can also be used, which, when the vehicle is stopped, records the display and the associated measured value and when the journey starts again, the measured values at the beginning of the old and the beginning again the journey compares, the difference is determined and this difference in the now displayed Values taken into account.

Die Zeichnung zeigt ein mögliches Ausfiihrungsbeispiel der Erfindung. Mit 1 ist dort ein Höhenmesser bezeichnet, der bei jeder Druckänderung bestimmter Größe einen Impuls abgibt, dessen Polarität von der Änderungsrichtung abhängt. Diese Impulse gelangen über ein Tor 2 zu einem Anzeigeelement 3, das die ankommenden Impulse ausgehend von einem eingegebenen Antangswert in eine Anzeige umsetzt. Bei entsprechender Eichung (Anfangswert) und bei konstanten Wetterverhältnissen zeigt das Anzeigeelement die Höhe des Standorts an. Um wetterbedingte Einflsse zu reduzieren ist das Tor 2 vorgesehen, das hier über einen mit dem Zündschlüssel betätigbaren Schalter 4 betätigt werden kann. Bei Fahrzeughalt ist der Schalter 4 geöffnet und damit Tor 2 geschlossen, so daß Druckknderungen bei Fahrzeughalt unberücksichtigt bleiben.The drawing shows a possible embodiment of the invention. 1 with an altimeter is referred to there, which is certain with every change in pressure Size emits a pulse, the polarity of which depends on the direction of change. These Pulses pass through a gate 2 to a display element 3, which shows the incoming pulses based on an entered initial value into a display. With the appropriate The display element shows calibration (initial value) and under constant weather conditions the height of the location. The goal is to reduce weather-related influences 2 is provided, which is operated here via a switch 4 can be operated. When the vehicle is stopped, switch 4 is open and thus the gate 2 closed, so that changes in pressure when the vehicle is stopped are not taken into account.

Claims (4)

Patentansprüche fS ( Barometrischer Höhenmesser zum D(iitfuhren in Fahrzeugen, dadurch gekennzeichnet, daß er eine Sperre enthält, um Druckänderungen von seiner Anzeige während der Betätigung der Sperre auszuschließen und daß diese Sperre mit dem Fahrzeug gekoppelt ist derart, daß diese durch ein bei Fahrzeughalt wirksames Kriterium betätigt ist.Patent claims fS (barometric altimeter to the D (iitfuhren in Vehicles, characterized in that it contains a lock to pressure changes to exclude from his display during the actuation of the lock and that this The lock is coupled to the vehicle in such a way that it is activated by a vehicle stop effective criterion is activated. 2. Höhenmesser nach Anspruch 1, dadurch gekennzeichnet, daß die Sperre mit dem Tachometer gekuppelt ist derart, daß bei stehendem Motor die Sperre betätigt ist.2. Altimeter according to claim 1, characterized in that the lock is coupled to the speedometer in such a way that the lock is actuated when the engine is not running is. 3. Höhenmesser nach Anspruch 1, dadurch gekennzeichnet, daß die Sperre mit der Zündung gekuppelt ist, derart, daß bei abgeschalteter Zündung die Sperre betätigt ist.3. Altimeter according to claim 1, characterized in that the lock is coupled to the ignition in such a way that when the ignition is switched off, the lock is actuated. 4. Höhenmesser nach Anspruch 1, dadurch gekennzeichnet, daß die Sperre mit einem einem Fahrzeugrad zugeordneten Geschwindigkeitsgeber gekoppelt ist derart, daß bei Ausbleiben eines Geschwindigkeitssignals die Sperre betätigt wird.4. Altimeter according to claim 1, characterized in that the lock is coupled to a speed sensor assigned to a vehicle wheel in such a way that that in the absence of a speed signal, the lock is actuated.
DE19823232272 1982-08-31 1982-08-31 Barometric altimeter for use in vehicles Withdrawn DE3232272A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19823232272 DE3232272A1 (en) 1982-08-31 1982-08-31 Barometric altimeter for use in vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19823232272 DE3232272A1 (en) 1982-08-31 1982-08-31 Barometric altimeter for use in vehicles

Publications (1)

Publication Number Publication Date
DE3232272A1 true DE3232272A1 (en) 1984-03-01

Family

ID=6172089

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19823232272 Withdrawn DE3232272A1 (en) 1982-08-31 1982-08-31 Barometric altimeter for use in vehicles

Country Status (1)

Country Link
DE (1) DE3232272A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0733879A1 (en) * 1995-03-20 1996-09-25 CATEYE Co., Ltd. Altitude measuring device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3715926A (en) * 1971-06-28 1973-02-13 Lear Siegler Inc Dual mode altimeter
DE2605381A1 (en) * 1976-01-16 1977-07-21 Revue Thommen Ag Pocket altimeter with meter transmitter and indicator - comprises graduated dial, pointer and pointer revolution indicator visible through transparent cover glass
DE2738548A1 (en) * 1976-09-03 1978-03-23 Smiths Industries Ltd DISPLAY TOOL

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3715926A (en) * 1971-06-28 1973-02-13 Lear Siegler Inc Dual mode altimeter
DE2605381A1 (en) * 1976-01-16 1977-07-21 Revue Thommen Ag Pocket altimeter with meter transmitter and indicator - comprises graduated dial, pointer and pointer revolution indicator visible through transparent cover glass
DE2738548A1 (en) * 1976-09-03 1978-03-23 Smiths Industries Ltd DISPLAY TOOL

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0733879A1 (en) * 1995-03-20 1996-09-25 CATEYE Co., Ltd. Altitude measuring device

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8141 Disposal/no request for examination