DE741288C - Quotient measuring mechanism operated by direct current - Google Patents
Quotient measuring mechanism operated by direct currentInfo
- Publication number
- DE741288C DE741288C DEF86176D DEF0086176D DE741288C DE 741288 C DE741288 C DE 741288C DE F86176 D DEF86176 D DE F86176D DE F0086176 D DEF0086176 D DE F0086176D DE 741288 C DE741288 C DE 741288C
- Authority
- DE
- Germany
- Prior art keywords
- direct current
- measuring mechanism
- mechanism operated
- coils
- quotient measuring
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/08—Measuring resistance by measuring both voltage and current
- G01R27/10—Measuring resistance by measuring both voltage and current using two-coil or crossed-coil instruments forming quotient
- G01R27/12—Measuring resistance by measuring both voltage and current using two-coil or crossed-coil instruments forming quotient using hand generators, e.g. meggers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Linear Motors (AREA)
Description
Durch Gleichstrom betriebenes Quotientenmeßwerk Die Erfindung bezieht sich auf durch Gleich-Strom betriebene Quotientenmeßwerke, bei denen zwei im Winkel zueinander angeordnete Spulen vorgesehen sind.Quotient measuring mechanism operated by direct current The invention relates to on quotient measuring works operated by direct current, in which two at an angle mutually arranged coils are provided.
Strommesser, welche mit Dauermagneten arbeiten. die drehbar in dem Feld einer feststehenden Spule angeordnet sind, sind seit langem bekannt. Andererseits sind Drehfeldempfänger für Gleich- oder Wechselstrom bekannt, bei denen ein Dauermagnet sich in einem geschlossenen Eisenständer dreht, der Nuten besitzt, in welche die Drehfeldwicklungen nach Art der Phasenwicklung eines Wechselstromsynchronmotors gelegt sind. Bei Gleichstrommeßgeräten dieser Art werden die Wicklungen teilweise auf einen geschlossenen Eisenring aufgebracht. Demgegenüber besteht die Erfindung darin, daß bei durch Gleichstrom betriebenen Ouotientenmeßwerken der oben genannten Art die auf einen drehbaren Dauermagneten einwirkenden Spulen in der bei Drehfeldwicklungen bekannten Weise in Nuten eines ringförmigen Weicheisenständers liegen. Ammeters that work with permanent magnets. which rotates in the Field of a fixed coil are arranged, have long been known. on the other hand rotating field receivers for direct or alternating current are known, in which a permanent magnet rotates in a closed iron stand that has grooves into which the Rotating field windings like the phase winding of an AC synchronous motor are laid. In direct current meters of this type, the windings are partially applied to a closed iron ring. In contrast, there is the invention that in the case of direct current operated Ouotientenmeßwerke of the above Type of coils acting on a rotating permanent magnet in the case of rotating field windings known way lie in grooves of an annular soft iron stand.
Im Laufe der Entwicklung sind die mit Dauermagnet arbeitenden Strommesser immer mehr durch Drehspulgeräte verdrängt worden, hauptsächlich wegen der Empfindlichkeit gegen Fremdfeldeinflüsse. Mit Rücksicht hierauf haben sich insbesondere Geräte zur Messung von Stromverhältni ssen praktisch nur als Drehspulgeräte, hauptsächlich in der Gestalt des Kreuzspulgerätes, einzubürgern vermocht. In the course of development are the ammeters that work with permanent magnets has been increasingly displaced by moving coil devices, mainly because of its sensitivity against external field influences. With this in mind, devices for Measurement of current ratios practically only as moving coil devices, mainly in the form of the package winder, able to be naturalized.
Diese Stromverhältnismesser besitzen jedoch erhebliche Nachteile, die hauptsächlich durch die Notwendigkeit, bewegliche Stromzuführungen anzubringen, bedingt sind. Die Ausführung dieser Stromzuführungen als Schleifkontakte würde zur Reibungsbehinderung des Ä!Ießwerks, außerdem zur Störung der Anzeige durch den Übergangswiderstand der Kontakte führen. Daher werden im allgemeinen schwache elastische Bänder zur Stromzuführung benutzt, deren geringe Richtkraft gleichwohl die den Hauptvorteil eines Stromverhältnismessers bildende Spannungsunabhängigkeit stark einschränkt. Es sind zwar Stromverhältnismesser bekanntgeworden, welche mit einem drehbaren Dauermagneten und festen Spulen arbeiten, die aber nicht nach der vorliegenden Erfindung in Nuten eines ringförmigen Weicheisenständers liegen.However, these current ratios have significant disadvantages, mainly due to the need to attach movable power supply lines, are conditional. The execution of these power supply lines as sliding contacts would lead to Friction hindrance of the Ä! Iesswerk, also to the disturbance of the display by lead the transition resistance of the contacts. Hence, they will generally be weak elastic bands used for power supply, but their low leveling force the voltage independence which is the main advantage of an ammeter severely restricts. There are current ratios become known, which with a rotating permanent magnet and fixed coils work, but not according to the present invention lie in grooves of an annular soft iron stand.
Solche Geräte besitzen den Nachteil verhältnismäßig geringer Richtkraft bei schwachen Strömen.Such devices have the disadvantage of a relatively low leveling force with weak currents.
Dagegen liefern die gemäß der Erfindung ausgebildeten Stromverhältnismesser nicht nur größere Richtkräfte als die bekannten Geräte, sondern besitzen auch eine so gute Definition der Lage der Spulenfelder, daß es möglich ist, bei der Serienherstellung ohne Schwierigkeiten genau übereinstimmende, z. B. vorgedruckte Skalen zu verwenden. Dies wird erfindungsgemäß dadurch erreicht, daß die zwei feststehenden Spulen in der bisher nur bei Drehfeldempfängern bekannten Art in die Nuten eines ringförmigen, den Magneten umschließenden Ständers eingebettet liegen. Hierdurch wird gleichzeitig eine praktisch vollständige Unabhängigkeit von äußeren Störfeldern erreicht. In contrast, the current ratio meters designed according to the invention provide not only larger directional forces than the known devices, but also have one so good definition of the position of the coil fields that it is possible in series production without difficulty exactly matching, e.g. B. to use preprinted scales. This is achieved according to the invention in that the two stationary coils in of the type previously only known from rotary field receivers into the grooves of an annular, the magnet enclosing stand are embedded. This is at the same time a practically complete independence from external interference fields is achieved.
Gegenüber den bekannten Quotientenmeßwerken mit drehbaren Spulen besitzen die neuen Geräte den Vorteil, daß sie leicht mit größerer Widerstandsfähigkeit gegen mechanische Beanspruchungen und mit größerer Verstellkraft ausgeführt werden können. Compared to the known quotient measuring units with rotatable coils The new devices have the advantage that they are lightweight with greater resilience against mechanical loads and with greater adjusting force can.
Ein Ausführungsbeispiel der Erfindung ist in Fig. 1 dargestellt. Hier sind auf einem ringförmigen Weicheisenkörper, der zur besseren Übersichtlichkeit in der Zeichnung weggelassen ist, zwei Feldwicklungen nach Art der Phasenwicklungen eines Drehstrommotors unter einem gewissen. grundsätzlich beliebigen Winkel gegeneinander aufgebracht, In Fig. 1 beträgt der Winkel 90°. Jede der Wicklungen W1 und W2 besteht aus zwei Halbwicklungen, die in der von Drehstrommotoren her bekannten Art in eine größere Anzahl von Einzelzweigen aufgestellt sind, die durch die Nuten des Ständers laufen. Fließen durch beide Wicklungen gleich starke Ströme, so ergibt sich ein Magnetfeld, dessen Richtung in die Winkelhalbierende der beiden Spulenachsen fällt. Allgemein hängt die Richtung des Magnetfeldes nur vom Verhältnis der Stromstärken in den Spulen ab. Es ist nun ein drehbarer Dauermagnet 31 inmitten des Weicheisenkörpers vorgesehen, auf den keine Richtkraft wirkt und der sich infolgedessen in die Richtung des resultierenden Magnetfeldes einstellt. Das Gerät stellt also einen Stromverhältnismesser dar, der von der absoluten Größe der Stromstärken unabhängig arbeitet. An embodiment of the invention is shown in FIG. Here are on a ring-shaped soft iron body for clarity is omitted in the drawing, two field windings in the manner of phase windings a three-phase motor under a certain degree. basically any angle to each other applied, In Fig. 1 the angle is 90 °. Each of the windings W1 and W2 consists from two half-windings, which are in the type known from three-phase motors larger number of individual branches are set up through the grooves of the stand to run. If currents of equal strength flow through both windings, this results in a Magnetic field, the direction of which falls in the bisector of the two coil axes. In general, the direction of the magnetic field depends only on the ratio of the currents in the coils. It is now a rotatable permanent magnet 31 in the middle of the soft iron body provided, on which no directional force acts and which consequently moves in the direction of the resulting magnetic field. So the device provides a current ratio meter which works independently of the absolute magnitude of the currents.
Die Zeichnung stellt diejenige Stellung des Magneten dar, die sich ergibt, wenn der Strom in den Wicklungen W1 Null wird, Bei Umkehr der Stromrichtung dreht sich offensichtlich der Dauermagnet um 180°. Statt der gezeichneten Form kann der Dauermagnet auch zweckmäßig Kreiszylinderform mit quer zur Achse verlaufender Magnetisierungsrichtung erhalten.The drawing shows the position of the magnet that is results when the current in the windings W1 becomes zero, when the direction of the current is reversed the permanent magnet obviously rotates 180 °. Instead of the drawn shape, you can use the permanent magnet also expediently circular cylinder shape with transverse to the axis Get direction of magnetization.
Die Anwendung eines derartigen Geräts sind vielfältige. Es läßt sich sowohl zur Fernübertragung von Meßwerten vermittels Widerstandsfernsenders wie auch z. B. zur Temperaturmessung in der Schaltung verwenden, wie in Fig. 1 a dargestellt. Hier bedeuten V den Stromverhältnismesser, R' einen variablen Widerstand, z. B. ein Widerstandsthermometer, R einen festen oder ebenfalls variablen Widerstand, Sp die Spannungsquelle. The applications of such a device are diverse. It can be both for remote transmission of measured values by means of remote resistance transmitters as well as z. B. use for temperature measurement in the circuit, as shown in Fig. 1 a. Here V denotes the current ratio meter, R 'a variable resistor, e.g. B. a resistance thermometer, R a fixed or variable resistance, Sp the voltage source.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF86176D DE741288C (en) | 1939-01-08 | 1939-01-08 | Quotient measuring mechanism operated by direct current |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF86176D DE741288C (en) | 1939-01-08 | 1939-01-08 | Quotient measuring mechanism operated by direct current |
Publications (1)
Publication Number | Publication Date |
---|---|
DE741288C true DE741288C (en) | 1943-11-16 |
Family
ID=7114640
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEF86176D Expired DE741288C (en) | 1939-01-08 | 1939-01-08 | Quotient measuring mechanism operated by direct current |
Country Status (1)
Country | Link |
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DE (1) | DE741288C (en) |
Citations (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE223104C (en) * | ||||
DE146897C (en) * | ||||
DE167511C (en) * | ||||
DE111351C (en) * | ||||
DE300197C (en) * | ||||
DE71423C (en) * | L. WEBER, Professor an der Universität in Kiel, Holtenauerstrafse 101 | Device for the electrical remote transmission of pointer positions | ||
DE312359C (en) * | ||||
DE298044C (en) * | ||||
NL43832C (en) * | 1900-01-01 | |||
US1261870A (en) * | 1916-12-29 | 1918-04-09 | Olof Arvid Axelsson Tenow | Electric transmitting system. |
FR499629A (en) * | 1920-02-17 | |||
DE361515C (en) * | 1922-10-16 | Riccardo Girardelli | Device intended for the electrical remote transmission of rotary movements | |
DE369610C (en) * | 1922-01-19 | 1923-03-24 | Neufeldt & Kuhnke | Device for remote display of the relative distance between two moving bodies |
DE433938C (en) * | 1925-01-01 | 1926-09-11 | Siemens & Halske Akt Ges | Circuit arrangement for the transmission of continuous signals from a transmitter station to a remote receiver station, on which a display instrument with a three-step or six-coil system is arranged, in particular for liquid level telecommunication systems |
DE462832C (en) * | 1925-07-26 | 1928-07-17 | Siemens & Halske Akt Ges | Arrangement for remote transmission of the position of the pointer of a transmitter device to a receiving device, the pointer periodically closing and opening a circuit for remote transmission at the point of a resistor corresponding to the respective pointer deflection |
DE485174C (en) * | 1927-08-27 | 1929-10-28 | Hartmann & Braun Akt Ges | Transferring the position of a pointer in paragraphs |
DE492302C (en) * | 1926-06-04 | 1930-02-20 | Siemens & Halske Akt Ges | Arrangement for the transmission of the position of a pointer which effects the setting of an electrical receiver by temporarily making contact with a resistor |
DE596564C (en) * | 1932-10-20 | 1934-05-07 | Neufeldt & Kuhnke G M B H | Armature for remote indicator systems with a four-phase winding |
DE614920C (en) * | 1931-01-15 | 1935-06-03 | Kreiselgeraete G M B H Vormals | Device for synchronous transmission of a rotary movement from an encoder station to a receiver station |
DE642178C (en) * | 1935-03-05 | 1937-02-27 | Appbau Ges Neumann & Borm | Electromagnetic remote indicator |
US2102409A (en) * | 1937-12-14 | Electrical-measuring instrument | ||
DE690284C (en) * | 1935-11-06 | 1940-04-20 | Siemens App | Rotary field receiver for command and other transmission systems |
-
1939
- 1939-01-08 DE DEF86176D patent/DE741288C/en not_active Expired
Patent Citations (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR499629A (en) * | 1920-02-17 | |||
DE167511C (en) * | ||||
DE361515C (en) * | 1922-10-16 | Riccardo Girardelli | Device intended for the electrical remote transmission of rotary movements | |
DE111351C (en) * | ||||
DE300197C (en) * | ||||
DE71423C (en) * | L. WEBER, Professor an der Universität in Kiel, Holtenauerstrafse 101 | Device for the electrical remote transmission of pointer positions | ||
DE312359C (en) * | ||||
DE298044C (en) * | ||||
DE223104C (en) * | ||||
US2102409A (en) * | 1937-12-14 | Electrical-measuring instrument | ||
NL43832C (en) * | 1900-01-01 | |||
DE146897C (en) * | ||||
US1261870A (en) * | 1916-12-29 | 1918-04-09 | Olof Arvid Axelsson Tenow | Electric transmitting system. |
DE369610C (en) * | 1922-01-19 | 1923-03-24 | Neufeldt & Kuhnke | Device for remote display of the relative distance between two moving bodies |
DE433938C (en) * | 1925-01-01 | 1926-09-11 | Siemens & Halske Akt Ges | Circuit arrangement for the transmission of continuous signals from a transmitter station to a remote receiver station, on which a display instrument with a three-step or six-coil system is arranged, in particular for liquid level telecommunication systems |
DE462832C (en) * | 1925-07-26 | 1928-07-17 | Siemens & Halske Akt Ges | Arrangement for remote transmission of the position of the pointer of a transmitter device to a receiving device, the pointer periodically closing and opening a circuit for remote transmission at the point of a resistor corresponding to the respective pointer deflection |
DE492302C (en) * | 1926-06-04 | 1930-02-20 | Siemens & Halske Akt Ges | Arrangement for the transmission of the position of a pointer which effects the setting of an electrical receiver by temporarily making contact with a resistor |
DE485174C (en) * | 1927-08-27 | 1929-10-28 | Hartmann & Braun Akt Ges | Transferring the position of a pointer in paragraphs |
DE614920C (en) * | 1931-01-15 | 1935-06-03 | Kreiselgeraete G M B H Vormals | Device for synchronous transmission of a rotary movement from an encoder station to a receiver station |
DE596564C (en) * | 1932-10-20 | 1934-05-07 | Neufeldt & Kuhnke G M B H | Armature for remote indicator systems with a four-phase winding |
DE642178C (en) * | 1935-03-05 | 1937-02-27 | Appbau Ges Neumann & Borm | Electromagnetic remote indicator |
DE690284C (en) * | 1935-11-06 | 1940-04-20 | Siemens App | Rotary field receiver for command and other transmission systems |
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