DE2523857A1 - Electronic meter measuring accelerations and decelerations - has ammeter indicating discharge of capacitor in RC circuit fed by DC signal proportional to speed changes - Google Patents

Electronic meter measuring accelerations and decelerations - has ammeter indicating discharge of capacitor in RC circuit fed by DC signal proportional to speed changes

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Publication number
DE2523857A1
DE2523857A1 DE19752523857 DE2523857A DE2523857A1 DE 2523857 A1 DE2523857 A1 DE 2523857A1 DE 19752523857 DE19752523857 DE 19752523857 DE 2523857 A DE2523857 A DE 2523857A DE 2523857 A1 DE2523857 A1 DE 2523857A1
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DE
Germany
Prior art keywords
capacitor
ammeter
decelerations
signal proportional
accelerometer
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.)
Pending
Application number
DE19752523857
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German (de)
Inventor
Henning Ing Grad Kruithoff
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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
Priority to DE19752523857 priority Critical patent/DE2523857A1/en
Publication of DE2523857A1 publication Critical patent/DE2523857A1/en
Pending legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P1/00—Details of instruments
    • G01P1/07—Indicating devices, e.g. for remote indication
    • G01P1/08—Arrangements of scales, pointers, lamps or acoustic indicators, e.g. in automobile speedometers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/16—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by evaluating the time-derivative of a measured speed signal

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

Change of a d.c. signal proportional to the motor speed changes, in a finite time, the charge of a capacitor in an RC circuit. Time integral of the resulting charge of discharge current is displayed by an ammeter. Its reading is a measure for the instantaneous acceleration. This arrangement for measuring both accelerations and decelerations offers an inexpensible solution in itself but is even cheaper if a voltage generating installation is already available for a speedometer.

Description

Titel: Elektronischer Beschleunigungsmesser für positive sowie negative Beschleunigungen.Title: Electronic accelerometer for positive as well as negative Accelerations.

Anwendungsgebiet: Die Erfindung betrifft einen elektronischen Beschleunigungsmesser zur Messung positiver sowie negativer Beschleunigungen - insbesondere bei Kraftfahrzeugen aller Art.Field of application: The invention relates to an electronic accelerometer for measuring positive and negative accelerations - especially in motor vehicles all kinds.

Zweck: Beschleunigungsmesser gestatten in der Beschleunigungsphase eine objektive Beurteilung der Leistungsreserve bei Kraftfahrzeugen, die speziell für die Wahl der optimalen Übersetzung ( Gang ) von besonderer Bedeutung ist. Darüber hinaus ermöglichen sie eine Kontrolle für wirtschaftliche Fahrweise.Purpose: Accelerometers allow in the acceleration phase an objective assessment of the power reserve in motor vehicles that specifically is of particular importance for the choice of the optimal gear ratio. About that In addition, they enable a control for economical driving style.

Stand der Technik: E 5 ist bekannt, daß es Beschleunigungsmesser gibt, die sowohl auf der Basis mechanischer wie auch elektronischer Effekte aufgebaut sind.State of the art: E 5 is known to have accelerometers which are built on the basis of both mechanical and electronic effects are.

Kritik des Standes der Technik: Einfache mechanische Beschleunigungsmesser sind zwar relativ preiswert, funktionieren aber nur befriedigend unter idealen Bedingungen, wie z.B.Criticism of the Prior Art: Simple Mechanical Accelerometers are relatively inexpensive, but only work satisfactorily under ideal conditions, such as.

ruck- und stoßfreie Linearbewegungen, die bei Kraftfahrzeugen praktisch nie gegeben sind. Jerk-free and shock-free linear movements, which are practical in motor vehicles are never given.

Auf dem Markt erhältliche elektronische Beschleunigungsmesser sind aufgrund ihrer Entwicklung für Spezialzwecke zwar sehr genau, haben aber dafür den Nachteil, auch sehr teuer zu sein. Electronic accelerometers available in the market are due to their development for special purposes, they are very precise, but have the Disadvantage of being very expensive too.

Aufgabe: Der Erfindung liegt die Aufgabe zugrunde, einen elektronischen Beschleunigungsmesser für Kraftfahrzeuge zu entwickeln, der bei ausreichend guter Genauigkeit zudem auch preiswert gefertigt werden kann.Task: The invention is based on the task of providing an electronic To develop accelerometers for motor vehicles that are sufficiently good Accuracy can also be manufactured inexpensively.

Lösung: Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß die änderung eines, der Drehzahl des Motors gleichspannungsproportionalen Signals an einer Kondensator-Widerstand-Kombination den Ladezustand des Kondensators in einer endlichen Zeit verändert. Das Zeitintegral des entstehenden Lade- bzw. Entladestromes wird von einem Amperemeter zur Anzeige gebracht und ist somit ein Maß für die momentane Beschleunigung.Solution: The object is achieved according to the invention in that the change a signal proportional to the speed of the motor at a capacitor-resistor combination changes the state of charge of the capacitor in a finite time. The time integral the resulting charge or discharge current is displayed by an ammeter brought and is therefore a measure of the current acceleration.

Weitere Ausgestaltung der Erfindung: Ein der Drehzahl des Motors anfallendes stromproportionales Signal wird erst in ein gleichspannungsproportionales Signal umgewandelt.A further embodiment of the invention: one resulting from the speed of the motor A signal proportional to the current is only converted into a signal proportional to the DC voltage converted.

Ein vom Drehzahlmesser her schon vorhandenes spannungsproportionales Signal kann bei einer Drehzahl-Beschleunigungsmesser-Kombination gleichzeitig für den Beschleunigungsmesser mitverwendet werden. Das Amperemeter zur Anzeige der Beschleunigung besitzt den elektrischen Nullpunkt in der Skalenmitte. An already existing voltage proportional from the tachometer Signal can be used simultaneously for a speed-accelerometer combination the accelerometer can also be used. The ammeter for displaying the acceleration has the electrical zero point in the middle of the scale.

Erzielbare Vorteile: Die mit der Erfliidung erzielten Vorteile liegen insbesondere darin, daß mit dieser sehr preiswerten Lösung der Beschleunigungsmessung vergleichsweise teuerere Problemlösungen vermieden werden. Bei der Verwendung einer Drehzahl-Beschleunigungsmesser-Kombination würden die Kosten für den Beschleunigungsmesser noch wesentlich geringer sein, da hier ein nutzbares Signal bereits vorliegt/ bzw. mit geringstem Aufwand -bei stromproportionaler Drehzahlmessung - her zu stellen wäre.Achievable advantages: The advantages achieved with the fulfillment are especially that with this very inexpensive solution of the acceleration measurement comparatively more expensive problem solutions can be avoided. When using a The speed-accelerometer combination would reduce the cost of the accelerometer still be significantly lower, since a usable signal is already available here / or with very little effort - with current-proportional speed measurement - to produce were.

Beschreibung eirles Ausführungsbeispieles: Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben. Es zeigt: Fig. 1 Meßanordnung einer Drehzahl -Bes chleunigungsmesser -Kombination, wobei C und R die Kondensator -Widerstand-Anordnung des Beschleunigungsmessers darstellt.Description of an exemplary embodiment: An exemplary embodiment the invention is illustrated in the drawing and will be described in more detail below. It shows: Fig. 1 measuring arrangement of a speed -es accelerometer combination, where C and R represent the capacitor-resistor arrangement of the accelerometer.

Claims (1)

PATEN TA NSP R Uc HE PATEN TA NSP R Uc HE ================================ Oberbegriff: 1. Elektronischer Beschleunigungsmesserfür positive sowie negative Beschleunigungen. ================================= Generic term: 1. Electronic accelerometer for positive as well as negative accelerations. Kennzeichnender Teil: dadurch gekennzeichnet, daß die änderung eines, der Drehzahl des Motors gleichspanungsproportionalen Signalsan einer Kondensator-Widerstand-Kombination den Ladezustand des Kondensators in einer endlichen Zeit verändert.Characteristic part: characterized in that the change in one, the speed of the motor DC-proportional signal on a capacitor-resistor combination changes the state of charge of the capacitor in a finite time. Das Zeitintegral des entstehenden lade- bzw. The time integral of the resulting charging or Entladestromes wird von einem Amperemeter zur Anzeige gebracht und ist somit ein Maß für die momentane Beschleunigung. The discharge current is displayed by an ammeter and is therefore a measure of the current acceleration. Oberbegriff des 1. Unteranspruches: 2. Elektronischer Beschleunigungsmesser nach Anspruch 1.Preamble of the 1st subclaim: 2. Electronic accelerometer according to claim 1. Kennzeichnender Teil: dadurch gekennzeichnet, daß ein anfallendes stromproportionales Signal zuerst in ein gleichspannungsproportionales Signal umgewandelt wird.Characteristic part: characterized in that an accruing The current proportional signal is first converted into a DC voltage proportional signal will. Oberbegriff des 2. Unteranspruches: 5. Elektronischer Beschleunigungsmesser nach Anspruch 1 und 2.Preamble of the 2nd subclaim: 5. Electronic accelerometer according to claims 1 and 2. Kennzeichnender Teil: dadurch gekennzeichnet, daß ein vom Drehzahlmesser her schon spannungsproportionales Signal bei einer Drehzahl-Beschleunigungsmesser-Kombination gleichzeitig für den Beschleunigungsmesser mitverwendet werden kannw Oberbegriff des 3. Unteranspruches: 4. Elektronischer Beschleunigungsmesser nach Anspruch 1,2 und 5.Characteristic part: characterized in that one of the tachometer already voltage-proportional signal for a speed-accelerometer combination can also be used for the accelerometer w generic term of the 3rd dependent claim: 4. Electronic accelerometer according to claim 1, 2 and 5. Kennzeichnender Teil: dadurch gekennzeichnet, daß das Amperemeter zur Anzeige der Beschleunigung den elektrischen Nullpunkt in der Skalenmitte besitzt.Characteristic part: characterized in that the ammeter to display the acceleration has the electrical zero point in the middle of the scale.
DE19752523857 1975-05-30 1975-05-30 Electronic meter measuring accelerations and decelerations - has ammeter indicating discharge of capacitor in RC circuit fed by DC signal proportional to speed changes Pending DE2523857A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19752523857 DE2523857A1 (en) 1975-05-30 1975-05-30 Electronic meter measuring accelerations and decelerations - has ammeter indicating discharge of capacitor in RC circuit fed by DC signal proportional to speed changes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752523857 DE2523857A1 (en) 1975-05-30 1975-05-30 Electronic meter measuring accelerations and decelerations - has ammeter indicating discharge of capacitor in RC circuit fed by DC signal proportional to speed changes

Publications (1)

Publication Number Publication Date
DE2523857A1 true DE2523857A1 (en) 1976-12-16

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DE19752523857 Pending DE2523857A1 (en) 1975-05-30 1975-05-30 Electronic meter measuring accelerations and decelerations - has ammeter indicating discharge of capacitor in RC circuit fed by DC signal proportional to speed changes

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2433214A1 (en) * 1978-08-10 1980-03-07 Vdo Schindling DEVICE FOR DISPLAYING THE MOVEMENT SPEED OF A VEHICLE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2433214A1 (en) * 1978-08-10 1980-03-07 Vdo Schindling DEVICE FOR DISPLAYING THE MOVEMENT SPEED OF A VEHICLE

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