EP0879472B1 - Positionsbestimmungsvorrichtung für den anker eines schützes - Google Patents
Positionsbestimmungsvorrichtung für den anker eines schützes Download PDFInfo
- Publication number
- EP0879472B1 EP0879472B1 EP97900576A EP97900576A EP0879472B1 EP 0879472 B1 EP0879472 B1 EP 0879472B1 EP 97900576 A EP97900576 A EP 97900576A EP 97900576 A EP97900576 A EP 97900576A EP 0879472 B1 EP0879472 B1 EP 0879472B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sensors
- armature
- marking
- determination apparatus
- position determination
- 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 - Lifetime
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Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/16—Indicators for switching condition, e.g. "on" or "off"
- H01H9/168—Indicators for switching condition, e.g. "on" or "off" making use of an electromagnetic wave communication
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/04—Means for indicating condition of the switching device
- H01H2071/048—Means for indicating condition of the switching device containing non-mechanical switch position sensor, e.g. HALL sensor
Definitions
- the invention relates to a position determining device for the armature of a contactor, the armature being a mark and can be moved between an ON and an OFF position and the position determining device has a plurality of sensors has, by means of which the marking of the anchor is detectable and the position of the anchor can be determined.
- DE 44 09 010 A1 describes a switching device in which the position of the movable organ by means of a sensor, especially the armature of a contactor during the switching process is determinable.
- the sensor is a potentiometer consisting of an elongated sensor element and a movable rotor attached to the anchor, which is on the Sensor element supported.
- the coil current is dependent on the difference between target coil current and measured actual coil current controlled by a pulse modulation circuit, the Coil current depends on the level of pulse size modulation.
- a potentiometer as a position sensor several disadvantages. So for one is the resistance of the Potentiometers are temperature dependent, making the actual Position of the armature in the event of temperature fluctuations from the switching device not without additional circuitry Effort can be determined. On the other hand, that of the The armature moves through the required pressure force of the coil Sliding contacts of the potentiometer braked. Through the relative fast movement of the anchor will also add the resistance area of the potentiometer is stressed, causing it to Changes in resistance due to detachment or abrasion of the resistance material comes. A control of the contactor is no longer possible in this case.
- DE 38 22 342 C2 is a solenoid control known, the shift solenoid control a number of in Has direction of movement of the armature arranged light barriers.
- the light barriers consist of photodiodes and one Row of light emitting diodes, which on both sides of the anchor are arranged.
- the anchor has a hole that the light path of only one light barrier when moving of the anchor opens individually or one after the other.
- the light barrier signals can be evaluated by means of evaluation electronics the position of the anchor can be determined.
- the speed of the anchor can also be determined if the Time is measured that the marking needs to be next to each other by two to drive through lying light barriers.
- EP 152 067 A2 describes a generic position determination device known to have a magnetic Sensor consisting of four transmitters, each with one Primary and a secondary winding, and a rod that is periodically occupied with magnetic markings on which the sensor is guided along.
- the sensor is longitudinally extended by a quarter of a period larger than the periodic spacing of the markings.
- the four Transformers are primarily phase-shifted excited.
- the four that can be tapped at the secondary windings Secondary signals are sent to the sensor when the sensor moves along Markings according to the periodically changing Reluctances more or less weakened.
- the four Secondary signals are superimposed positively or negatively and a phase difference evaluation circuit supplied as Result the linear position of the sensor between two Outputs markings with fairly accuracy.
- This position determination device has a phase difference evaluation circuit the crucial disadvantage, only within one, by the periodic distance between two Markings of defined area the position of the sensor to be able to grasp absolutely with regard to the staff, against which after exceeding this range, the measurement signal repeated periodically accordingly.
- the invention is therefore based on the task of a simple one Provide position determining device that allows the movement sequence of the anchor when entering or Turn off a contactor to monitor, at the same time the position of the anchor with the same number of used Position sensors can be determined more precisely than at the state of the Technology.
- This object is achieved in that the Marking of at least two sensors can be detected simultaneously is.
- the sensors encode the position of the armature is noticeable.
- the dimensions of the marking are in Select the relationship to the sensor positions so that e.g. just no sensor detects the marking in the OFF position. If the armature is moved in the direction of the ON position, so a first sensor detects the marking after one certain stroke distance. The armature continues to the ON position moved, detects in addition to the first sensor a second sensor detects the mark.
- a second sensor detects the mark.
- the evaluation electronics of the position determining device can advantageously work digitally, as a result of which the signals can be evaluated with a microprocessor. If you code the digital signals of the n sensors, there are a maximum of 2 n possible combinations. If the shape of the marking is selected accordingly, the lifting distance of the armature can be divided into a maximum of 2 n determinable positions by means of the n sensors. For this purpose, the marking must be dimensioned such that the marking can be detected by all sensors simultaneously in one position of the armature. In order to enable all 2 n combinations, the marking must be divided into at least two markings, for example to enable coding "1011" with 4 sensors.
- the sensors are not as close together as desired can be arranged.
- the accuracy of the positioning device can therefore only by a larger Number of sensors arranged side by side can be increased.
- the number of sensors is determined by the total stroke of the Ankers limited himself. This problem is eliminated if the Sensors transverse to the direction of movement of the armature or the Marking are arranged in a row.
- the several slightly offset markings existing marking in this case extends across the width of the Direction of movement of the armature arranged sensors and is designed such that e.g. in the exhibition of the anchor no sensor detects the mark and in all other positions at least one sensor each the marking detected.
- the cross to the direction of movement arranged sensors in the direction of movement of the armature to each other are slightly offset.
- extending transversely to the direction of movement Marking does not have a special shape, so the position of the anchor can be determined very precisely. That can be advantageous by a width of the mark that the Width of the sensor line formed by the individual sensors corresponds.
- the marking consists of several Markings exist and each marking has at least the state of a sensor when moving the anchor between the OFF and ON position changed, especially when the Markings offset from each other in the direction of movement of the armature are arranged.
- the outer, transverse to the direction of movement The edges of the marking of the anchor are at this Embodiment in particular stair-shaped, whereby the Moving the anchor activated the sensors one after the other become.
- the Sensors arranged in a grid or in rows and columns, whereby the spatial dimensions of the positioning device can be advantageously reduced because of the packing density of the sensors is larger than if the sensors were merely are arranged in a row.
- the individual lie Columns parallel to the direction of movement of the anchor. At This embodiment has the anchor for each of them If there are multiple sensors, at least one column separate marking.
- the sensors can be mechanical in all embodiments Switches, induction, capacitance, light, magnetic or Hall sensors.
- the marking advantageously consists of a ferromagnetic material.
- the marking if light sensors or Light barriers used, the marking consists of a or more passages, bores or light reflecting surfaces.
- the marking is a permanent magnet or consists of several individual at different locations on the anchor attached smaller permanent magnets.
- the Sensors in the direction of movement of the armature make the markings or the individual markings for different lengths Detect distances.
- Optimal use of the Possible combinations arise when the location of the Sensors the distances over which the individual sensors cover the Detect mark, and number, size and relative Position of the marking or the individual markings are determined to each other in such a way that in the process of Anchor between the OFF and ON position all possible Combinations of states of the sensors occur.
- Fig. 1 shows a position determining device 1 with four arranged parallel to each other in the direction of movement 7 of the armature 2 Sensors 5.
- the sensors 5 are photodetectors that form 6 light barriers together with the illuminants.
- the Illuminants 6 are in particular photodiodes.
- the sensors 5 and illuminant 6 are arranged on a base plate 4.
- the base plate 4 can be a circuit board that the evaluation electronics, not shown, for processing the carries signals generated by the sensors 5.
- the anchor 2 has a mark 3 through a recess in the armature 2 is formed. If the anchor 2 by means of a not shown If the coil moves, then the marking 3 passes through the detection area Move 8 of sensors 5.
- the sensor 5 then sends the signal "1" to the Evaluation electronics.
- the marking 3 has a spatial extent in the direction of movement 7 of the armature 2, so that the Mark 3 of at least two sensors 5 simultaneously is detectable. In Fig. 2 the length of the marking 3 is so dimensioned that all sensors 5 (see position E) is detectable.
- the four sensors 5 one can such a simple design of the marker 3 eight positions the anchor 3 can be determined very precisely.
- the accuracy of the Position determining device 1 depends among other things from the distance between the individual detection areas 8 Sensors 5 from.
- the detection area 8, 10 of each sensor 5 can, as shown in FIG. 3, have different dimensions in the direction of movement 7 of the armature 2. This determines the distance for which the respective sensor 5 detects the marking 3 when the armature 2 is moved.
- the marking 3 is also divided into two by the intermediate area 9.
- the intermediate area 9 is not detected by the sensors 5, ie the sensors 5 are deactivated or send the signal “0” when the intermediate area is in the detection area 8, 10 of the respective sensor 5.
- the four sensors 5 can be used to achieve a resolution (positions A to M) of the stroke distance of thirteen positions covered by the armature 2 between the OFF position (position A) and the ON position (position M).
- a resolution of a maximum of 2 n positions can be achieved with n sensors 5 used.
- the sensors are 5 Hall detectors.
- the mark In this case, 3 is in particular a permanent magnet.
- the magnet 3 is in the detection area 8 of a sensor 5 is located by the magnetic field of the permanent magnet 3 Hall voltage generated in the Hall detector.
- There is a Hall voltage to the output terminals of the Hall detector this is evaluated as signal "1”. If there is a Hall voltage, then so the output signal is "0".
- the signals can also be defined the other way around.
- Figures 6 and 7 show a position determining device 1 arranged transversely to the direction of movement 7 of the armature 2 Hall detectors 5.
- the marks 3 are Permanent magnets facing each other in the direction of movement 7 of the armature 2 are slightly offset so that they are in the process of the armature 2 in the direction of movement 7 one after the other in the Detection areas 8 of the sensors 5 occur and these activate.
- the number of magnets used 3 and the size the displacements of the individual magnets 3 to each other can be chosen arbitrarily fine so that the stroke of the armature 2 can be subdivided as desired.
- the number of used Magnet 3 depends only on the width of the armature 2 and not the one limited by the stroke length of the armature 2 Length of anchor 2 from.
- the step-by-step transfers can thereby using an etching process or a laser other suitable process.
- FIG. 7 Such an embodiment is shown in FIG. 7 shown.
- the armature 2 has two marking carriers 14, 15, on each of which an elongated marking 16, 17 is arranged.
- the marker carriers 14, 15 are mechanically connected to one another by a connecting web 13.
- the markings 16, 17 are cutouts due to the fork light barriers used, which release the light beam from the light-emitting diodes 18 towards the photodetectors 11, whereby the respective photodetector 11 of the fork light barriers 12 is activated.
- the fork light barriers 12 are arranged on a base plate 4 for easy installation and simple installation in the contactor. Due to the arrangement with respect to one another and the number of markings 16, 17 used on the marking carriers 14, 15, a resolution of the position determining device 1 of up to a maximum resolution of 2 n positions of the armature 2 can be achieved with n sensors 12 used.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Braking Arrangements (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Laser Beam Processing (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Description
- Figur 1:
- Eine Positionsbestimmungsvorrichtung mit vier in Bewegungsrichtung des Ankers parallel zueinander angeordneten Sensoren, wobei die Sensoren Lichtschranken sind;
- Figur 2:
- eine schematische Darstellung einer Positionsbestimmungsvorrichtung, wobei alle möglichen mittels der Sensoren bestimmbaren Positionen der Markierung dargestellt sind;
- Figur 3:
- eine schematische Darstellung gemäß Fig. 2, wobei die Markierung zweigeteilt ist;
- Figur 4:
- eine Positionsbestimmungsvorrichtung mit induktiven Sensoren;
- Figur 5:
- eine Positionsbestimmungsvorrichtung mit Hall-Detektoren als Sensoren und einem Magneten als Markierung;
- Figur 6:
- eine Positionsbestimmungsvorrichtung mit quer zur Bewegungsrichtung des Ankers angeordneten Hall-Detektoren, wobei die Magnete als Markierungen in Bewegungsrichtung des Ankers zueinander leicht versetzt angeordnet sind;
- Figur 7:
- eine Positionsbestimmungsvorrichtung mit quer zur Bewegungsrichtung des Ankers angeordneten Hall-Detektoren, wobei die Hall-Detektoren in Bewegungsrichtung des Ankers zueinander leicht versetzt angeordnet sind;
- Figur 8:
- eine Positionsbestimmungsvorrichtung mit in zwei Spalten und zwei Reihen angeordneten Sensoren.
Claims (13)
- Positionsbestimmungsvorrichtung für den Anker eines Schützes, wobei der Anker (2) eine Markierung (3) hat und zwischen einer AUS- und einer EIN-Stellung verfahrbar ist, und die Positionsbestimmungsvorrichtung (1) mehrere Sensoren (5) hat, mittels derer die Markierung (3) des Ankers (2) detektierbar und die Position des Ankers (2) bestimmbar ist, dadurch gekennzeichnet, daß die Markierung (3) derart gestaltet und angeordnet ist, daß sie zeitweise von mindestens zwei Sensoren (5) gleichzeitig detektierbar ist und daß die Sensoren (5) von der Markierung (3) je nach Position des Ankers (2) bzw. der Markierung (3) aktiviert oder deaktiviert sind und je nach Zustand ein entsprechendes digitales Signal an eine Auswertelektronik übermitteln.
- Positionsbestimmungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Positionsbestimmungsvorrichtung (1) n Sensoren (5) hat und die Markierung (3) zeitweise von allen n Sensoren (5) gleichzeitig detektierbar ist.
- Positionsbestimmungsvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Sensoren (5) in Bewegungsrichtung (7) des Ankers (2) nebeneinander angeordnet sind.
- Positionsbestimmungsvorrichtung nach einem der Ansprüche 1 bis 2, dadurch gekennzeichnet, daß die Sensoren (5) quer zur Bewegungsrichtung (7) des Ankers (2) nebeneinander angeordnet sind und daß die Markierung (3) aus mehreren in Bewegungsrichtung (7) des Ankers (2) zueinander versetzt angeordneten Markierungen (3) besteht.
- Positionsbestimmungsvorrichtung nach einem der Ansprüche 1 bis 2, dadurch gekennzeichnet, daß die Sensoren (5) in Bewegungsrichtung (7) des Ankers (2) zueinander versetzt angeordnet sind.
- Positionsbestimmungsvorrichtung nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß die Breite der Markierung (3) der Breite der durch die einzelnen Sensoren (5) gebildeten Sensorzeile entspricht.
- Positionsbestimmungsvorrichtung nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß mindestens zwei Markierungen (3) zeitweise von mindestens zwei Sensoren (5) gleichzeitig detektierbar sind.
- Positionsbestimmungsvorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß die Sensoren (5) rasterförmig bzw. in Spalten und Reihen angeordnet sind.
- Positionsbestimmungsvorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Sensoren (5) mechanische Schalter, Induktions- , Kapazitäts- oder Magnetsensoren sind.
- Positionsbestimmungsvorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Sensoren (5) Lichtschranken sind und die Markierung (3) ein Durchlaß, eine Bohrung oder eine lichtreflektierende Fläche ist derart, daß die Markierung (3) die Lichtschranke entweder unterbricht oder öffnet.
- Positionsbestimmungsvorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Sensoren (5) Hall-Detektoren sind und die Markierung (3) ein Magnet ist derart, daß der Magnet eine Hall-Spannung in den Sensoren (5) erzeugt, sobald er in der unmittelbaren Nähe eines Sensor (5) ist.
- Positionsbestimmungsvorrichtung nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß die Sensoren (5) in Bewegungsrichtung (7) des Ankers (2) die Markierungen (3) bzw. die einzelnen Markierungen (3) für unterschiedlich lange Wegstrecken detektieren.
- Positionsbestimmungsvorrichtung nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß die Lage der Sensoren (5), die Wegstrecken, über die die einzelnen Sensoren (5) die Markierung (3) detektieren, und die Anzahl, Größe und relative Lage der Markierung (3) bzw. der einzelnen Markierungen (3) zueinander derart bestimmt sind, daß beim Verfahren des Ankers (2) zwischen der AUS- und EIN-Stellung alle möglichen Zustandskombinationen der Sensoren (5) auftreten.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29602868U DE29602868U1 (de) | 1996-02-06 | 1996-02-06 | Positionsbestimmungsvorrichtung für den Anker eines Schützes |
DE29602868U | 1996-02-06 | ||
PCT/EP1997/000051 WO1997029498A1 (de) | 1996-02-06 | 1997-01-09 | Positionsbestimmungsvorrichtung für den anker eines schützes |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0879472A1 EP0879472A1 (de) | 1998-11-25 |
EP0879472B1 true EP0879472B1 (de) | 2000-10-18 |
Family
ID=8019679
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97900576A Expired - Lifetime EP0879472B1 (de) | 1996-02-06 | 1997-01-09 | Positionsbestimmungsvorrichtung für den anker eines schützes |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0879472B1 (de) |
AT (1) | ATE197102T1 (de) |
DE (2) | DE29602868U1 (de) |
WO (1) | WO1997029498A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10130799C1 (de) * | 2001-06-22 | 2003-01-30 | Siemens Ag | Einrichtung zur Lagekennzeichnug einer Weichenzunge |
DE102011107896A1 (de) * | 2011-07-18 | 2013-01-24 | Abb Technology Ag | Anordnung zur Überwachung eines Antriebs für einen Leistungsschalter |
US9418808B2 (en) * | 2014-12-29 | 2016-08-16 | Eaton Corporation | RFID tag based state monitoring of contactors |
EP3086346B1 (de) * | 2015-04-22 | 2018-06-13 | General Electric Technology GmbH | Nachweisvorrichtung zur bestimmung, ob ein bewegliches element eine erste oder zweite lage relativ zu einem feststehenden teil einnimmt |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2306207A1 (de) * | 1973-02-08 | 1974-08-15 | Bbc Brown Boveri & Cie | Signalgeber-einrichtung fuer schuetze oder schalter |
US4717874A (en) * | 1984-02-10 | 1988-01-05 | Kabushiki Kaisha Sg | Reluctance type linear position detection device |
EP0203897A1 (de) * | 1985-04-26 | 1986-12-03 | SiTek Lab AB | Vorrichtung zur Lagebestimmung |
DE3822342A1 (de) * | 1987-07-09 | 1989-01-19 | Mitsubishi Electric Corp | Strompfadunterbrecher |
DE3731661A1 (de) * | 1987-09-20 | 1989-03-30 | Sempell Rhein Armaturen | Einrichtung zur beeinflussung des rueckschaltwertes eines ventiles oder eines druckschalters |
DE3910873A1 (de) * | 1989-04-04 | 1990-10-18 | Stahl R Foerdertech Gmbh | Positionsmessvorrichtung fuer kran- und elektrohaengebahnen |
DE3910810A1 (de) * | 1989-04-04 | 1990-10-11 | Luetze Gmbh Co F | Schaltungsanordnung fuer ein elektromagnetisches ventil |
DE4031427A1 (de) * | 1990-10-04 | 1992-04-09 | Luetze Gmbh Co F | Verfahren und vorrichtung zum energiereduzierten betrieb eines elektromagnetischen stellgliedes |
FR2674027A1 (fr) * | 1991-03-13 | 1992-09-18 | Alsthom Gec | Dispositif de mesure incrementale du deplacement d'une piece mobile en translation en particulier d'une bielle de commande de disjoncteur. |
FR2702880B1 (fr) * | 1993-03-17 | 1995-04-28 | Telemecanique | Appareil interrupteur électromagnétique. |
US5469054A (en) * | 1993-04-22 | 1995-11-21 | Honeywell Inc. | Position sensor with two magnetically sensitive devices and two target tracks which are sensed in combination with each other to provide a synthesized signal |
US5483214A (en) * | 1994-04-26 | 1996-01-09 | Kilovac Corporation | Armature position sensor for a relay |
-
1996
- 1996-02-06 DE DE29602868U patent/DE29602868U1/de not_active Expired - Lifetime
-
1997
- 1997-01-09 DE DE59702497T patent/DE59702497D1/de not_active Expired - Fee Related
- 1997-01-09 EP EP97900576A patent/EP0879472B1/de not_active Expired - Lifetime
- 1997-01-09 AT AT97900576T patent/ATE197102T1/de not_active IP Right Cessation
- 1997-01-09 WO PCT/EP1997/000051 patent/WO1997029498A1/de active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
WO1997029498A1 (de) | 1997-08-14 |
DE29602868U1 (de) | 1996-05-30 |
DE59702497D1 (de) | 2000-11-23 |
ATE197102T1 (de) | 2000-11-15 |
EP0879472A1 (de) | 1998-11-25 |
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