DE2406194A1 - Wheatstone bridge sensitivity improvement cct. - bridge outputs are connected to electronic adder - Google Patents

Wheatstone bridge sensitivity improvement cct. - bridge outputs are connected to electronic adder

Info

Publication number
DE2406194A1
DE2406194A1 DE19742406194 DE2406194A DE2406194A1 DE 2406194 A1 DE2406194 A1 DE 2406194A1 DE 19742406194 DE19742406194 DE 19742406194 DE 2406194 A DE2406194 A DE 2406194A DE 2406194 A1 DE2406194 A1 DE 2406194A1
Authority
DE
Germany
Prior art keywords
bridge
outputs
sensitivity
cct
bridges
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
DE19742406194
Other languages
German (de)
Inventor
Albert Dipl Phys Therstappen
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
Priority to DE19742406194 priority Critical patent/DE2406194A1/en
Publication of DE2406194A1 publication Critical patent/DE2406194A1/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R17/00Measuring arrangements involving comparison with a reference value, e.g. bridge
    • G01R17/10AC or DC measuring bridges

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Abstract

The circuit increases the sensitivity of bridge networks, especially Wheatstone bridges, which are of special importance in measuring of coefficients of elasticity. In order to achieve a sufficient sensitivity it is often necessary to weaken a test piece so much tht it reaches the breaking limit. The present invention avoids this. The adder output signal is used for indication, control and other similar ends. More than two bridge outputs are applied to the adder. The bridge is provided at the points of support of a plate serving as a balance. Thompson, Wien and other bridges can be similarly used.

Description

Schaltung zur Verbesserung der Empfindlichkeit von Brückenschaltungen Die Erfindung betrifft eine Schaltung zur # Verbesserung der Empfindlichkeit von Brückenschaltungen,insbesondere von Weatstoneschen Brukken.Derartige Brücken haben eine große Bedeutung in der Dehnmeßstreifentecknik. Um dort ausreichende Empfindlichkeit zu erhalten, ist es oft nötig, das Werkstück so zu schwachen,daß es in einem Versuch oft bis an die Grenze der Bruchfestigkeit belastet wirdOEs ist wohl die Empfindlichkeit der Dehnmeßstreifen im Laufe der Zeit stark gesteigert worden , aber es reicht selten zur Eichgenauigkeit. Circuit to improve the sensitivity of bridge circuits The invention relates to a circuit for # improving the sensitivity of Bridge circuits, especially from Weatstone bridges. Such bridges have of great importance in strain gauge technology. To get there sufficient sensitivity To obtain, it is often necessary to weaken the workpiece so that it can be tested in one attempt is often stressed to the limit of the breaking strengthO It is probably the sensitivity the strain gauge has been greatly increased over time, but it is seldom enough for calibration accuracy.

Die vorliegende Erfindung iese Nachteile,indem die Ausgange derartiger Brucken auf eine Additionsschaltung gegeben werden.The present invention These disadvantages, in that the outputs of such bridges are given to an addition circuit.

Dadurch wird die Empfindlichkeit je nach Anzahl der Brücken , die auch mehr als zwei sein kann, gesteigert. # In der Anwendung kann eine Platte auf vier Bruckmeßdosen abgestützt sein und als Waage dienen.iamit dürfte der gesamte Schwerwaagenbau auf Dehneßstreifentechnik umgestellt werden, weil sich eine derartige Anordnung mit additionsschaltung wesentlich billiger herstellen läßt.An Stelle von Wheatstoneschen Brücken können auch andere brücken wie die nach Thompson oder nach Wien genommen werden.This will increase the sensitivity depending on the number of bridges that can also be more than two, increased. # In the application, a disk can be on four bridge load cells should be supported and serve as a scale. With that, the entire Heavy scales to be converted to expansion strip technology because there is such a Arrangement with addition circuit can be produced much cheaper. Instead of Wheatstone bridges can also bridge others such as those according to Thompson or after Vienna to be taken.

In der Zeichnung sind zwei Ausiuhrungsbeispiele der Erfindung dargestellte In Figur 1 sind von einer Stromqwelle gleichgültig ob für Gleich-oder Wechselstr tstonesche Blicken angeschlossen0ie Ausgänge liegen an einer Additionsschaltung,vonaer aus die nicht dargestellte Anzeige erfolgen kann. In Figur zwei wird eine Anordnung gezeigt ,bei der von einer Mittel abzweigung als Erde zur Additionsschaltung gegeben wird einen Ausgänge der Schaltung gehen direkt zur Additionsschaltung, die anderen mit umgekehrter Spannungsrichtung nach Umkehr in entsprechenden Spannungsuinkehrern,wie sie in entsprechenden Röhren-oder Transistorschaltungen in bekannter Weise zu verwirklichen sind, auf die Additionsschaltung. Eine Waagenplatte kann auch an drei Stellen oder sechs abgestützt sein 0Auch ist es möglich tan jeder Stützstelle zwei oder mehr Brückenschaltungen vorzusehen.In the drawing, two exemplary embodiments of the invention are shown. In FIG tstone looks connected0ie outputs are connected to an addition circuit from which the display, not shown, can take place. In Figure two an arrangement is shown in which from a central branch as earth is given to the addition circuit, one outputs of the circuit go directly to the addition circuit, the others with reverse voltage direction after reversal in corresponding voltage inverters, as they are known in corresponding tube or transistor circuits Way to be realized are on the addition circuit. A scale plate can also be supported at three or six points. It is also possible to provide two or more bridge circuits at each support point.

Claims (4)

a t e n t a n s p r ü c h ea t e n t a n s p r ü c h e lo) Schaltung zur Verbesserung der Empfindlichkeit von Brückent insbesondere von Wheatstoneschen, dadu eichnet, daß die Ausgänge derartiger Brücken auf eine Additionsschaltung und von dort zur Anzeige,Steuerung oder dergleichen geleitet werden.lo) Circuit to improve the sensitivity of Brückent in particular of Wheatstone, dadu eichnet that the outputs of such bridges are passed to an addition circuit and from there to display, control or the like. 2. Schaltung nach Anspruch 1 ennzeichnet, daß mehr als zwei Brückenausgänge auf die Additionsschaltung gegeben werden, 2. Circuit according to claim 1 indicates that more than two bridge outputs are given to the addition circuit, 3. Schaltung nach Anspruch 1, dadurch gekennzeichnet, daß die Brückenschaltungen an den Stützstellen einer als Waage dienenden Platte angebracht sind0 3. A circuit according to claim 1, characterized in that the bridge circuits are attached to the support points of a plate serving as a scale0 4. Schaltung nach Anspruch 1, dadurch gekennzeichnet, daß di einer Thompson, Wien'schen oder dergleichen Brücke auf eine Additionsschaltung gegebeh werden.4. A circuit according to claim 1, characterized in that di a Thompson, Wien or the like bridge to an addition circuit.
DE19742406194 1974-02-09 1974-02-09 Wheatstone bridge sensitivity improvement cct. - bridge outputs are connected to electronic adder Pending DE2406194A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19742406194 DE2406194A1 (en) 1974-02-09 1974-02-09 Wheatstone bridge sensitivity improvement cct. - bridge outputs are connected to electronic adder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742406194 DE2406194A1 (en) 1974-02-09 1974-02-09 Wheatstone bridge sensitivity improvement cct. - bridge outputs are connected to electronic adder

Publications (1)

Publication Number Publication Date
DE2406194A1 true DE2406194A1 (en) 1975-08-21

Family

ID=5906981

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19742406194 Pending DE2406194A1 (en) 1974-02-09 1974-02-09 Wheatstone bridge sensitivity improvement cct. - bridge outputs are connected to electronic adder

Country Status (1)

Country Link
DE (1) DE2406194A1 (en)

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