EP1094443B1 - Control method for the ringing angle of a church bell - Google Patents

Control method for the ringing angle of a church bell Download PDF

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Publication number
EP1094443B1
EP1094443B1 EP99810955A EP99810955A EP1094443B1 EP 1094443 B1 EP1094443 B1 EP 1094443B1 EP 99810955 A EP99810955 A EP 99810955A EP 99810955 A EP99810955 A EP 99810955A EP 1094443 B1 EP1094443 B1 EP 1094443B1
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EP
European Patent Office
Prior art keywords
drive motor
motor
pulse
bell
measuring
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EP99810955A
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German (de)
French (fr)
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EP1094443A1 (en
Inventor
Markus Dorrer
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Joh Muff AG
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Joh Muff AG
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Priority to EP99810955A priority Critical patent/EP1094443B1/en
Priority to DE59913019T priority patent/DE59913019D1/en
Priority to AT99810955T priority patent/ATE315268T1/en
Publication of EP1094443A1 publication Critical patent/EP1094443A1/en
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Publication of EP1094443B1 publication Critical patent/EP1094443B1/en
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    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K1/00—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs
    • G10K1/28—Bells for towers or the like
    • G10K1/30—Details or accessories
    • G10K1/34—Operating mechanisms
    • G10K1/347—Operating mechanisms for an oscillating bell which is driven twice per cycle

Definitions

  • the present invention relates to a method for controlling the swing angle of a vibrating church bell driven in pulses by means of a polyphase motor, preferably an asynchronous motor.
  • an additional auxiliary device is used, which measures the size of the swing angle permanently.
  • Various methods are used to measure the current actual swing angle.
  • the controller thus continuously calculates the required duty cycle of the bell drive motor to maintain the desired flywheel angle. All these known methods have in common that in addition to the drive motor additional scanning devices must be present or mounted.
  • the object of the present invention is to provide a method which does not have the above-mentioned disadvantage of the previously known methods, i. in which no additional flywheel scanning devices need to be mounted in addition to the drive motor. This object is achieved by means of a method according to claim 1 according to the invention.
  • a 3-phase asynchronous drive motor 1 for the oscillating drive of a church bell 2 is connected via a motor isolator 3 to a 3 ⁇ 400V power controller 4.
  • the latter is used for pulse-shaped control of the drive motor 1 for Achieving a swinging deflection of the attached to a bell yoke 5 church bell. 2
  • the motor separation stage 3 is used to protect the drive motor 1, in which after a certain number of failed attempts in which the desired or required swing angle ⁇ was not reached, the drive motor 1 is decoupled from the power controller 4.
  • pulse-shaped operating times of the drive motor 1 is now new according to the present invention during the unpowered time phases of the drive motor 1, during which the latter is decoupled from the grid, this used as a generator, with the help of the measurement voltage generated in each case between two successive calculated actual time required following reversal points of the swing direction, compared with the target time, and if necessary, the respective short-time on time of the drive motor in the power control 4 is corrected accordingly.
  • a differential amplifier 11 is supplied.
  • the phase position of the two measuring voltages is evaluated to each other, and rectified sinusoidal voltage pulses (see Figure 4) delivered.
  • This pulse sequence (see FIG. 4) is then supplied (still with drive motor 1 disconnected from the network) to a comparator 12, which consists, for example, of a standard comparator in which, on the one hand, the maximum voltage of the pulses is standardized on the basis of an upper and a lower threshold value, and, on the other hand in order to obtain clearly defined pulse gaps m at the point of reversal of the uncoupled from the network, co-rotating drive motor 1, below a lower threshold pulses are eliminated, so that at the output of Comparator 12 a rectangular pulse train according to Figure 5 is formed.
  • a comparator 12 which consists, for example, of a standard comparator in which, on the one hand, the maximum voltage of the pulses is standardized on the basis of an upper and a lower threshold value, and, on the other hand in order to obtain clearly defined pulse gaps m at the point of reversal of the uncoupled from the network, co-rotating drive motor 1, below a lower threshold pulses are eliminated, so that at the output of Comparator 12
  • the threshold value of the comparator 12 may be over a e.g. From a trimmer existing drive motor balance 13 to the respectively used or existing drive motor 1 can be adjusted.
  • the rectangular pulse train (FIG. 5) thus obtained is then supplied to an optocoupler 14 for potential separation and display of the motor measurement pulses, and then to an evaluation circuit 15 provided with a RISC processor.
  • the reversal point t o is determined in the centers of the pulse gaps m, in which the drive motor 1 is briefly stopped, between two successive reversal points determines the actual momentum, compared this with the target momentum, and at overshoot or undershoot a certain threshold value, the drive pulse duration of the drive motor 1 via the controller 16 of the power stage 4 and the separation stage 8, corrected in a corresponding sense.
  • the separation stage 8 is activated in the separating sense.
  • the display unit 17 serves to visually represent the measured pulse gap durations m in order to be able to optimally balance different motors despite the same evaluation electronics during initial startup of the system.

Abstract

The method involves applying a direct voltage to at least one motor winding during a pulse pause and sensing a measurement voltage on at least one other winding as the motor turns under the inertia of the bell. The actual time between successive reversals of direction of motion is determined and compared with a desired value to enable correction of the pulse drive duration. The applied direct current is between 1 and 50 mA.

Description

Die vorliegende Erfindung betrifft ein Verfahren zur Steuerung des Schwungwinkels einer mittels eines Mehrphasen-Motors, vorzugsweise Asynchronmotors, impulsförmig angetriebenen schwingenden Kirchenglocke.The present invention relates to a method for controlling the swing angle of a vibrating church bell driven in pulses by means of a polyphase motor, preferably an asynchronous motor.

Zur Steuerung des Schwungwinkels von Kirchenglocken wird bei herkömmlichen Kirchenglockensteuerungen wie sie zum Beispiel aus den veröffentlichungen EP 0 486 453 und EP 0 120 436 bekannt sind, eine zusätzliche Hilfseinrichtung verwendet, die dauernd die Grösse des Schwungwinkels misst. Dabei werden verschiedene Verfahren zur Messung des aktuellen Ist-Schwungwinkels angewendet. Die Steuerung berechnet damit fortlaufend die erforderliche Einschaltdauer des Glockenantriebsmotors um den Soll-Schwungwinkel einzuhalten. Allen diesen bekannten Verfahren gemeinsam ist, dass neben dem Antriebsmotor zusätzliche Abtastvorrichtungen vorhanden bzw. montiert sein müssen.To control the swing angle of church bells in conventional church bell controls as they are known for example from the publications EP 0486453 and EP 0 120 436, an additional auxiliary device is used, which measures the size of the swing angle permanently. Various methods are used to measure the current actual swing angle. The controller thus continuously calculates the required duty cycle of the bell drive motor to maintain the desired flywheel angle. All these known methods have in common that in addition to the drive motor additional scanning devices must be present or mounted.

Aufgabe der vorliegenden Erfindung ist die Schaffung eines Verfahrens welches diesen vorangehend angeführten Nachteil der bisher bekannten Verfahren nicht aufweist, d.h. bei welchem neben dem Antriebsmotor keine zusätzlichen Schwungwinkelabtastvorrichtungen montiert werden müssen. Diese Aufgabe wird mittels eines Verfahrens gemäss Anspruch 1 erfindungsgemäss gelöst.The object of the present invention is to provide a method which does not have the above-mentioned disadvantage of the previously known methods, i. in which no additional flywheel scanning devices need to be mounted in addition to the drive motor. This object is achieved by means of a method according to claim 1 according to the invention.

Zweckmässige Weiterausgestaltungen der Erfindung sind Gegenstand der abhängigen Ansprüche 2 bis 7.Advantageous further developments of the invention are the subject of the dependent claims 2 to 7.

Nachstehend wird die Erfindung anhand der Zeichnung beispielsweise beschrieben. Es zeigt:

  • Fig. 1 ein Blockschema einer beispielsweisen Ausführungsform einer Schaltung zur Durchführung des erfindungsgemässen Verfahrens;
  • Fig. 2 den Spannungsverlauf an der Stelle A in Figur 1;
  • Fig. 3 den Spannungsverlauf an der Stelle B in Figur 1;
  • Fig. 4 den Spannungsverlauf an der Stelle C in Figur 1 in Impulsform;
  • Fig. 5 den Spannungsverlauf an der Stelle D in Figur 1.
The invention will be described by way of example with reference to the drawing. It shows:
  • 1 shows a block diagram of an exemplary embodiment of a circuit for carrying out the method according to the invention;
  • FIG. 2 shows the voltage curve at the point A in FIG. 1; FIG.
  • 3 shows the voltage curve at the point B in FIG. 1;
  • 4 shows the voltage curve at point C in FIG. 1 in pulse form;
  • 5 shows the voltage curve at the point D in FIG. 1.

Wie aus Figur 1 ersichtlich, ist ein 3-Phasen-Asynchronantriebsmotor 1 zum schwingenden Antrieb einer Kirchenglocke 2 über eine Motor-Trennstufe 3 mit einer 3x 400V Leistungssteuerung 4 verbunden. Die Letztere dient zur impulsförmigen Ansteuerung des Antriebsmotors 1 zur Erzielung einer schwingenden Auslenkung der an einem Glockenjoch 5 befestigten Kirchenglocke 2.As can be seen from FIG. 1, a 3-phase asynchronous drive motor 1 for the oscillating drive of a church bell 2 is connected via a motor isolator 3 to a 3 × 400V power controller 4. The latter is used for pulse-shaped control of the drive motor 1 for Achieving a swinging deflection of the attached to a bell yoke 5 church bell. 2

Die Motor Trennstufe 3 dient zum Schutz des Antriebsmotors 1, in dem nach einer bestimmten Anzahl von Fehlversuchen, bei denen der gewünschte bzw. erforderliche Schwungwinkel α nicht erreicht wurde, der Antriebsmotor 1 von der Leistungssteuerung 4 abgekoppelt wird.The motor separation stage 3 is used to protect the drive motor 1, in which after a certain number of failed attempts in which the desired or required swing angle α was not reached, the drive motor 1 is decoupled from the power controller 4.

Bei Inbetriebsetzung des Glockengeläuts wird die Kirchenglocke 2 auf bekannte Weise durch jeweils kurzeitiges impulsförmiges Einschalten des Antriebsmotors 1 in der entsprechenden Drehrichtung bis auf den zu einem Anschlag des Klöppels 6 an der Glocke 2 erforderlichen Anschlag-Schwungwinkel α hochgeschaukelt, und zum weiteren Läuten der Glocke 2 über diesen Schwungwinkel α schwingend gehalten. Die bei einem korrekten Läutevorgang benötigte Sollzeit zwischen den beiden Umkehrpunkten der Schwungrichtung der Glocke ist physikalisch bedingt und daher für jede Glockengeläutauslegung vorbekannt.When starting the bell ringing the church bell 2 is rocked in a known manner by each kurzeitiges pulse-shaped switching of the drive motor 1 in the corresponding direction of rotation to the required stop of the bobbin 6 on the bell 2 stop swing angle α, and to further ring the bell. 2 held swinging over this swing angle α. The required during a proper ringing time between the two reversal points of the direction of the bell is physically conditioned and therefore previously known for each bell ringing design.

Zur Steuerung der kurzzeitigen, impulsförmigen Einsatzzeiten des Antriebsmotors 1 wird nun neu gemäss der vorliegenden Erfindung während den antriebslosen Zeitphasen des Antriebsmotors 1, während denen der Letztere vom Netz abgekoppelt ist, dieser als Generator benutzt, mit Hilfe der dabei erzeugten Messspannung jeweils die zwischen zwei aufeinander folgenden Umkehrpunkten der Schwungrichtung benötigte Ist-Zeit berechnet, mit der Soll-Zeit verglichen, und erforderlichenfalls die jeweils kurzzeitige Einschaltzeit des Antriebsmotors in der Leistungssteuerung 4 entsprechend korrigiert.To control the short-term, pulse-shaped operating times of the drive motor 1 is now new according to the present invention during the unpowered time phases of the drive motor 1, during which the latter is decoupled from the grid, this used as a generator, with the help of the measurement voltage generated in each case between two successive calculated actual time required following reversal points of the swing direction, compared with the target time, and if necessary, the respective short-time on time of the drive motor in the power control 4 is corrected accordingly.

Dazu wird während den antriebslosen Phasen des Antriebsmotors 1, während denen dieser über die Leistungssteuerung 4 vom Netz abgekoppelt ist, über ein DC-DC-Wandler 7 zur Erzielung einer 3000V-Potentialtrennung aus einer 24V-Versorgung ein auf ca. 10mA begrenzter 12V-Gleichstrom über die Trennstufe 8 der einen Wicklung des 3-Phasen-Asynchronmotors 1 zugeführt, wodurch bei sich mitdrehendem, in antriebslosem Zustand sich befindendem Antriebsmotor 1 über die beiden anderen Motorwicklungen zwei gegenüber Masse phasenverschobene Wechselmessspannungen erzeugt werden (siehe Figur 2). Diese beiden letzteren werden (immer noch bei vom Netz abgekoppeltem Betriebszustand des Antriebsmotors 1) zur Grobunterdrückung von Störungen über ein z.B. aus Drosselspulen bestehendes Filter 9 und die Trennstufe 8 zur Vermeidung von für die nachfolgende Elektronik schädlichen HF-und überspannungsstörspitzen einem weiteren, z.B. aus RC-Gliedern bestehenden zweiten Filter 10 und danach zur Differenzbildung und Verstärkung der beiden Messspannungen (siehe Figur 3) einem Differenzverstärker 11 zugeführt. In diesem Differenzverstärker wird die Phasenlage der beiden Messspannungen zueinander ausgewertet, und gleichgerichtete Sinusspannungsimpulse (siehe Figur 4) abgegeben.For this purpose, during the unpowered phases of the drive motor 1, during which it is decoupled from the power supply via the power controller 4, via a DC-DC converter 7 to achieve a 3000V potential separation from a 24V supply to a limited to 10mA 12V direct current via the separation stage 8 of the one winding of the 3-phase asynchronous motor 1 is supplied, whereby at co-rotating, in an inoperative state befindendem drive motor 1 via the two other motor windings two phase-shifted to ground alternating voltages are generated (see Figure 2). These two latter are (still with the operating mode of the drive motor 1 decoupled from the network) for the coarse suppression of disturbances over a e.g. choke coil filter 9 and separator 8 to avoid harmful HF and overvoltage noise spikes for subsequent electronics to another, e.g. from RC elements existing second filter 10 and then to the difference formation and amplification of the two measuring voltages (see Figure 3) a differential amplifier 11 is supplied. In this differential amplifier, the phase position of the two measuring voltages is evaluated to each other, and rectified sinusoidal voltage pulses (see Figure 4) delivered.

Diese Impulsfolge (siehe Figur 4) wird danach (immer noch bei vom Netz abgekoppeltem Antriebsmotor 1) einem z.B. aus einem Standard-Komperator bestehenden Vergleicher 12 zugeführt, in welchem auf Grund eines oberen sowie eines unteren Schwellenwertes einerseits die Maximalspannung der Impulse vereinheitlicht, und andererseits zum Erhalt klar ausgeprägter Impulslücken m im Umkehrpunkt des vom Netz abgekoppelten, mitdrehenden Antriebsmotors 1, unterhalb einem unteren Schwellenwert sich befindende Impulse eliminiert werden, so dass am Ausgang des Vergleichers 12 eine Rechteckimpulsfolge gemäss Figur 5 entsteht.This pulse sequence (see FIG. 4) is then supplied (still with drive motor 1 disconnected from the network) to a comparator 12, which consists, for example, of a standard comparator in which, on the one hand, the maximum voltage of the pulses is standardized on the basis of an upper and a lower threshold value, and, on the other hand in order to obtain clearly defined pulse gaps m at the point of reversal of the uncoupled from the network, co-rotating drive motor 1, below a lower threshold pulses are eliminated, so that at the output of Comparator 12 a rectangular pulse train according to Figure 5 is formed.

Der Schwellenwert des Vergleichers 12 kann über einen z.B. aus einem Trimmer bestehenden Antriebsmotorabgleich 13 an den jeweils verwendeten bzw. vorhandenen Antriebsmotor 1 angepasst werden.The threshold value of the comparator 12 may be over a e.g. From a trimmer existing drive motor balance 13 to the respectively used or existing drive motor 1 can be adjusted.

Die derart erhaltene Rechteckimpulsfolge (Fig. 5) wird danach zur Potentialtrennung und Anzeige der Motormessimpulse einem Optokoppler 14, und darauf einer mit einem RISC-Prozessor versehenen Auswertschaltung 15 zugeführt. In der Letzteren wird in den Mitten der Impulslücken m der Umkehrpunkt to bestimmt, in welchem der Antriebsmotor 1 kurz stillsteht, zwischen zwei aufeinanderfolgenden Umkehrpunkten die Ist-Schwungzeit bestimmt, diese mit der Soll-Schwungzeit verglichen, und bei Über- bzw. Unterschreitung eines bestimmten Schwellwertes die Antriebsimpulsdauer des Antriebsmotors 1 über die Steuerung 16 der Leistungsstufe 4 und der Trennstufe 8, in entsprechendem Sinn korrigiert.The rectangular pulse train (FIG. 5) thus obtained is then supplied to an optocoupler 14 for potential separation and display of the motor measurement pulses, and then to an evaluation circuit 15 provided with a RISC processor. In the latter, the reversal point t o is determined in the centers of the pulse gaps m, in which the drive motor 1 is briefly stopped, between two successive reversal points determines the actual momentum, compared this with the target momentum, and at overshoot or undershoot a certain threshold value, the drive pulse duration of the drive motor 1 via the controller 16 of the power stage 4 and the separation stage 8, corrected in a corresponding sense.

Wird der Antriebsmotor 1 wieder mit dem Netz verbunden, dann wird vorgängig die Trennstufe 8 im trennenden Sinn aktiviert.If the drive motor 1 is connected to the grid again, then the separation stage 8 is activated in the separating sense.

Die Anzeigeeinheit 17 dient dazu, die gemessenen Impulslückendauern m optisch darzustellen, um damit verschiedene Motoren trotz gleicher Auswertelektronik bei der Erstinbetriebnahme der Anlage optimal abgleichen zu können.The display unit 17 serves to visually represent the measured pulse gap durations m in order to be able to optimally balance different motors despite the same evaluation electronics during initial startup of the system.

Claims (7)

  1. A method for controlling the ringing angle of a swinging church bell driven in pulse mode by means of a multi-phase motor, preferably an asynchronous motor, characterised in that during the pulse interval of the drive motor (1) a dc supply voltage is applied to at least one of the motor windings and when the drive motor (1) is co-rotating as a result of the swinging mass of the church bell (2), a measuring voltage is scanned at at least one further motor winding wherein the latter is zero at the inversion point of the direction of rotation of the drive motor (1), i.e., at the inversion point of the direction of swing of the church bell (2), the actual time between two successive inversion points, i.e. between two successive zero points (t0) of the measuring voltage is determined and compared with a desired time and if a certain threshold value is exceeded or fallen below, the pulse drive time of the drive motor (1) is correspondingly corrected.
  2. The method according to claim 1, characterised in that in the case of a three-phase asynchronous drive motor (1) respectively one phase-shifted measuring voltage with respect to earth is scanned at two windings during the pulse interval of the drive motor (1), said two measuring voltages are supplied to a difference amplifier (11), and these two measuring voltages are evaluated with respect to one another, the rectangular output signal pulse sequence of the difference amplifier (11) is fed to a comparator (12) and is there compared with a threshold value such that signal pulses below a certain threshold value produce no output signal and the other signal pulses produce rectangular output signal pulses of the same amplitude and these output signals of the comparator (12) are then examined for pulse gaps (m) at the centre of which the inversion point (to) is located to determine the inversion point of the direction of swing of the church bell (2).
  3. The method according to claim 1 or claim 2, characterised in that a dc current limited to 1 to 50 mA, preferably at least approximately 10 mA, is supplied to one winding of the drive motor (1).
  4. The method according to claim 3, characterised in that a 12 V dc current produced from a 24 V supply by means of a DC/DC converter is used.
  5. The method according to claim 2, characterised in that the measuring voltage is passed via a filter (10) to filter out HF and overvoltage peaks before the difference amplifier (11).
  6. The method according to claim 2, characterised in that a digital signal processor is used as the comparator (12) .
  7. The method according to any one of claims 1 to 6, characterised in that photo-MOS relays or other types of semiconductor relays are used to isolate the measuring and evaluation and control electronics (10-16) from the mains as an isolating stage (8).
EP99810955A 1999-10-20 1999-10-20 Control method for the ringing angle of a church bell Expired - Lifetime EP1094443B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP99810955A EP1094443B1 (en) 1999-10-20 1999-10-20 Control method for the ringing angle of a church bell
DE59913019T DE59913019D1 (en) 1999-10-20 1999-10-20 Method for controlling the swing angle of a church bell
AT99810955T ATE315268T1 (en) 1999-10-20 1999-10-20 METHOD FOR CONTROLLING THE SWING ANGLE OF A CHURCH BELL

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99810955A EP1094443B1 (en) 1999-10-20 1999-10-20 Control method for the ringing angle of a church bell

Publications (2)

Publication Number Publication Date
EP1094443A1 EP1094443A1 (en) 2001-04-25
EP1094443B1 true EP1094443B1 (en) 2006-01-04

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EP99810955A Expired - Lifetime EP1094443B1 (en) 1999-10-20 1999-10-20 Control method for the ringing angle of a church bell

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EP (1) EP1094443B1 (en)
AT (1) ATE315268T1 (en)
DE (1) DE59913019D1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1310941B1 (en) * 2001-11-09 2010-06-02 Clock-O-Matic N.V. A method and a device for controlling a pendulum angle of a bell
EP2551844B1 (en) * 2011-07-28 2014-05-07 Muff Kirchturmtechnik AG Method for regulating the deflection angle of a bell and drive device for regulated operation of a bell coupled to the drive device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3310567C2 (en) * 1983-03-23 1985-12-12 Paul 8263 Burghausen Salomon Method for controlling the drive motor of a bell ringer and device for carrying out the method
DE3505062A1 (en) * 1985-02-14 1986-08-14 Herforder Elektricitäts-Werke Bokelmann & Kuhlo GmbH & Co., 4900 Herford BELL BELLING MACHINE
DE3701828A1 (en) * 1987-01-23 1988-08-04 Stuehrenberg Rolf Control device for bell-ringing machines (chime machines)
BE1004028A7 (en) * 1990-11-12 1992-09-08 Clock O Matic Nv Method and device for letting of worded by a powered clock.

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ATE315268T1 (en) 2006-02-15
DE59913019D1 (en) 2006-03-30
EP1094443A1 (en) 2001-04-25

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