EP0316493A1 - Vorrichtung zur Überwachung der guten elektrischen und/oder mechanischen Funktionierung von Anzeiger-Elementen des elektro-magnetischen Typs - Google Patents

Vorrichtung zur Überwachung der guten elektrischen und/oder mechanischen Funktionierung von Anzeiger-Elementen des elektro-magnetischen Typs Download PDF

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Publication number
EP0316493A1
EP0316493A1 EP87402599A EP87402599A EP0316493A1 EP 0316493 A1 EP0316493 A1 EP 0316493A1 EP 87402599 A EP87402599 A EP 87402599A EP 87402599 A EP87402599 A EP 87402599A EP 0316493 A1 EP0316493 A1 EP 0316493A1
Authority
EP
European Patent Office
Prior art keywords
permanent magnet
electromagnet
indicator element
electrical
circuit
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.)
Granted
Application number
EP87402599A
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English (en)
French (fr)
Other versions
EP0316493B1 (de
Inventor
Johan Van De Kamer
Claude Guittard
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.)
Equipement Industriel Normand
Original Assignee
Equipement Industriel Normand
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 Equipement Industriel Normand filed Critical Equipement Industriel Normand
Priority to ES87402599T priority Critical patent/ES2016378B3/es
Priority to AT87402599T priority patent/ATE54031T1/de
Priority to DE8787402599T priority patent/DE3763346D1/de
Priority to EP87402599A priority patent/EP0316493B1/de
Publication of EP0316493A1 publication Critical patent/EP0316493A1/de
Application granted granted Critical
Publication of EP0316493B1 publication Critical patent/EP0316493B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/02—Monitoring continuously signalling or alarm systems
    • G08B29/10—Monitoring of the annunciator circuits
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B5/00—Visible signalling systems, e.g. visible personal calling systems or remote indication of seats occupied
    • G08B5/22—Visible signalling systems, e.g. visible personal calling systems or remote indication of seats occupied using electric transmission; using electromagnetic transmission
    • G08B5/24—Visible signalling systems, e.g. visible personal calling systems or remote indication of seats occupied using electric transmission; using electromagnetic transmission with indicator element moving about a pivot, e.g. hinged flap or rotating vane
    • G08B5/30—Visible signalling systems, e.g. visible personal calling systems or remote indication of seats occupied using electric transmission; using electromagnetic transmission with indicator element moving about a pivot, e.g. hinged flap or rotating vane with rotating or oscillating members, e.g. vanes

Definitions

  • the present invention relates to a device for controlling the correct electrical and / or mechanical operation of electromagnetic type indicator elements.
  • Such an electromagnetic indicator element is mounted on a frame or mask and consists, on the one hand, of a movable part having a flap connected to a permanent magnet and pivotally mounted and, on the other hand, of an electromagnet fixed to this frame and intended to act on the permanent magnet of the movable part.
  • the permanent magnet secured to the movable flap is then positioned according to the magnetic polarity of the central core of the electromagnet and causes a rotation of the movable part of the flap in accordance with a polarity.
  • the latter In order to materialize the visual effect of such a change in position of the movable flap, the latter has a different contrast from the fixed frame or mask on which it is mounted.
  • the movable part can, for example, be immobilized by a foreign body or be broken or still no longer exist, or even be removed from its support.
  • the electromagnet may not be energized. in all cases, this has the effect of an error on the reading of the device equipped with the indicator element, and this device must indicate or detect the fault and automatically stop the service for which the measuring instrument comprising the indicator element was designed.
  • the control device aims to solve the above problem and can also be used as a memory element making it possible to know at any time the position in which the indicator element is located.
  • the control device comprises a circuit sensitive to the magnetic field of the permanent magnet of an electromagnetic indicator element controlled by an electromagnet, this circuit comprising a magneto-resistance near the permanent magnet and being connected to an input of a comparator, another input of which is connected to the supply circuit of the electromagnet and receives information concerning the electrical polarity of the control voltage applied to the electromagnet, so that a comparator output has a first value when the permanent magnet takes a position which corresponds to that of the polarity of the control voltage and a second value when the permanent magnet is not present or does not take said position indicating thus a mechanical and / or electrical failure of the indicator element, said comparator output being connected to an electronic device for processing these values allowing, for example e, to stop a counting device connected to the indicating element in the event of both mechanical and electrical failure of the latter.
  • the supply circuit of the electromagnet is connected to the terminals of a device for controlling the electrical operation of the supply circuit itself connected to the electronic processing device, so that a fault in the electrical supply of the electromagnet creates a signal of electrical failure of the indicator element acting on said processing device.
  • control device can be used as a memory element and is, in particular, applicable for detecting the position in which the indicator element is located after a lack of electrical supply to this last, the electromagnet retaining a remanent magnetization acting on the permanent magnet for controlling the shutter, the position of which is thus known before the momentary stopping of the supply.
  • the control device of the invention is also applicable for restarting a stopped computer system, after resetting the position information of the indicating element.
  • an electromagnetic indicator element 1 mounted in the frame 2 of a display.
  • the electromagnetic indicator 1 comprises a movable part 3 pivoting about an axis 4 and having a flap 5 provided with a digital indication of a type suitable for the display and is in the display position in FIG. 1 a and in the erasing position in FIG. 1 b .
  • the movable part 3 also includes a small permanent magnet 6 mounted in such a way that one of its poles, for example the north pole, is arranged opposite the flap relative to the pivot axis 4.
  • the movable part 3 Opposite the movable part 3 is mounted an electromagnet 7, the central magnetic core 8 of which is coaxial with an axis passing through the pivot 4 and the north pole of the permanent magnet 6 in the display position of FIG. 1 a .
  • the electromagnet 7 is mounted on a plate 9 secured to the frame 2 of the display and has two connection pads 10 connected to a control amplifier 11 (fig. 2).
  • the mobile part 3 will pivot to bring its south pole S in front of the north pole of the central core 8 of the electromagnet 7 (fig. 1 b ).
  • the flap 5 of the movable part 3 is then in the erasing position relative to the fixed frame or mask 2 of the display.
  • the movable flap In order to concretize the visual effect of the change of position of the movable flap relative to the fixed frame, the movable flap is of a different color from the frame or has a certain contrast with respect to the latter.
  • the present invention relates more particularly to the verification of the proper mechanical and electrical operation of a display constituted by electromagnetic indicator elements of the above type so as to verify whether the shutter is in the correct position when applied to electro - magnetizing a current pulse of given polarity.
  • FIG. 2 which shows a block diagram of the control device according to the invention for the correct electrical and mechanical operation of indicator elements of the type shown in FIGS. 1 a and 1 b , the entire element is represented diagrammatically indicator with the same references as in fig. 1a and 1b.
  • the movable part 3 which carries the permanent magnet 6 and the flap 5 normally takes the position in solid line (display position) or the position in dashed lines (erasing position) relative to the frame or mask 2.
  • a magneto-resistance 12 is placed in front of the permanent magnet 6 for example in the display position of FIG. 1 a , and this magneto-resistance is connected, by a shaping amplifier 13, to the first input 14 a of a gate AND of a comparator 15.
  • the AND gate 14 receives on its second input 14 b , by via a circuit 16, information relating to the polarity of the control pulse of the electromagnet, polarity which is also applied to the control amplifier 11 of the electromagnet 7.
  • the input 14a of the AND gate 14 which is connected to the shaping amplifier 13 is also connected to an electronic device 17 for processing the application which also receives the output of the AND gate on another input.
  • the electronic processing device 17 is provided for controlling the service of the measuring instrument comprising the indicator element of FIGS. 1 a and 1 b and stop it if the latter fails.
  • the output of the electronic processing device 17 is connected at 15 c to the comparator 15 and via the circuit 16 to the control amplifier 11; it allows, as seen above, to apply a pulse of polarity given to the electromagnet 7.
  • the permanent magnet 6 of the movable flap takes one of the positions shown in the drawing, and this position is detected by the circuit of the magneto-resistance 12 which, by Hall effect , thus allows the position of the mobile part 3 to be known by measuring the polarity of the permanent magnet 6.
  • the first input 14 a of the AND gate 14 of the comparator 15 receives information different from that applied by circuit 16 to its second input 14 b . Fault information then appears at the output of the AND gate 14 on the electronic device 17 for processing the application, which then generates a corresponding signal making it possible to stop by the system using the indicator element whose failure has been detected.
  • the comparator 15 gives, first of all, information on the position of the permanent magnet on its output 15 a connected to the shaping amplifier 13.
  • the comparator 15 gives, on the other hand, the output 15 b of the gate AND 14 a first value when the permanent magnet takes a position which corresponds to that of the polarity of the control voltage and a second value when the permanent magnet is not present or does not take said position thus indicating a mechanical failure of the corresponding indicator element.
  • the device of the invention is thus more particularly designed to detect a mechanical failure of the indicator element.
  • control device relates to the possibility of being able to know at any time the position in which the flap 5 of the indicator element is located, which is advantageous for example after a momentary absence of supply. electromagnet 7.
  • the mobile part 3 retains its position and the control device according to the invention makes it possible to know this position by the information leaving at 15a from the comparator 15.
  • the indicator element 1 then plays the role of a readable memory.
  • the indicator element thus controlled by the control device is associated with a microcomputer or computer system which would, for whatever reason, be stopped.
  • the system can then resume after a reset of the positioning information of the indicating element in order to be able to leave with the indications present before the event which produced the system shutdown.
  • control device can be used not only as a fault detector but also as a memory element.
  • Fig. 2 also represents a device 18 which is placed at the terminals of the control amplifier 11 and makes it possible to detect the correct electrical operation of this amplifier as well as in general of the entire electrical circuit of the indicating element.
  • the electrical operation control device 18 is connected to the electronic application processing device 17 which by line 19 makes it possible to send an electrical test command signal and by line 20 makes it possible to receive the result of the test and thus detect a break in the electrical circuit of the detector.
  • the electronic device 17 automatically stops the service for which the measuring instrument comprising the indicating element was designed, in the same way as previously in the case of a mechanical failure of the element indicator.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Push-Button Switches (AREA)
EP87402599A 1987-11-18 1987-11-18 Vorrichtung zur Überwachung der guten elektrischen und/oder mechanischen Funktionierung von Anzeiger-Elementen des elektro-magnetischen Typs Expired - Lifetime EP0316493B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ES87402599T ES2016378B3 (es) 1987-11-18 1987-11-18 Dispositivo de control del buen funcionamiento electrico y/o mecanico de elementos indicadores tipo electromagnetico.
AT87402599T ATE54031T1 (de) 1987-11-18 1987-11-18 Vorrichtung zur ueberwachung der guten elektrischen und/oder mechanischen funktionierung von anzeiger-elementen des elektro-magnetischen typs.
DE8787402599T DE3763346D1 (de) 1987-11-18 1987-11-18 Vorrichtung zur ueberwachung der guten elektrischen und/oder mechanischen funktionierung von anzeiger-elementen des elektro-magnetischen typs.
EP87402599A EP0316493B1 (de) 1987-11-18 1987-11-18 Vorrichtung zur Überwachung der guten elektrischen und/oder mechanischen Funktionierung von Anzeiger-Elementen des elektro-magnetischen Typs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP87402599A EP0316493B1 (de) 1987-11-18 1987-11-18 Vorrichtung zur Überwachung der guten elektrischen und/oder mechanischen Funktionierung von Anzeiger-Elementen des elektro-magnetischen Typs

Publications (2)

Publication Number Publication Date
EP0316493A1 true EP0316493A1 (de) 1989-05-24
EP0316493B1 EP0316493B1 (de) 1990-06-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP87402599A Expired - Lifetime EP0316493B1 (de) 1987-11-18 1987-11-18 Vorrichtung zur Überwachung der guten elektrischen und/oder mechanischen Funktionierung von Anzeiger-Elementen des elektro-magnetischen Typs

Country Status (4)

Country Link
EP (1) EP0316493B1 (de)
AT (1) ATE54031T1 (de)
DE (1) DE3763346D1 (de)
ES (1) ES2016378B3 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993007505A1 (de) * 1991-10-04 1993-04-15 Doduco Gmbh + Co. Dr. Eugen Dürrwächter Vorrichtung zum bestimmen der stärke eines magnetfeldes
DE9411459U1 (de) * 1994-07-15 1994-09-22 Veba Kraftwerke Ruhr Ag, 45896 Gelsenkirchen Vorrichtung zur optischen Anzeige und Speicherung von Fehlermeldungen
FR2729493A1 (fr) * 1995-01-17 1996-07-19 Mark Iv Ind Ltd Dispositif d'affichage electromagnetique et circuits pour sa commande
FR2825156A1 (fr) * 2001-05-28 2002-11-29 Valeo Vision Dispositif de detection de l'etat d'un electro-aimant
CN109708568A (zh) * 2018-12-04 2019-05-03 天津津航技术物理研究所 一种用于霍尔器件角度检测系统的信号处理装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3025512A (en) * 1959-07-01 1962-03-13 Gen Railway Signal Co Changeable indicators for display devices
GB2135799A (en) * 1983-02-15 1984-09-05 Gd Spa A system for monitoring the operation of output transducers of a central control and monitoring unit for machines and/or devices usable in production and/or product packaging lines

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3025512A (en) * 1959-07-01 1962-03-13 Gen Railway Signal Co Changeable indicators for display devices
GB2135799A (en) * 1983-02-15 1984-09-05 Gd Spa A system for monitoring the operation of output transducers of a central control and monitoring unit for machines and/or devices usable in production and/or product packaging lines

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993007505A1 (de) * 1991-10-04 1993-04-15 Doduco Gmbh + Co. Dr. Eugen Dürrwächter Vorrichtung zum bestimmen der stärke eines magnetfeldes
DE9411459U1 (de) * 1994-07-15 1994-09-22 Veba Kraftwerke Ruhr Ag, 45896 Gelsenkirchen Vorrichtung zur optischen Anzeige und Speicherung von Fehlermeldungen
FR2729493A1 (fr) * 1995-01-17 1996-07-19 Mark Iv Ind Ltd Dispositif d'affichage electromagnetique et circuits pour sa commande
GB2297185A (en) * 1995-01-17 1996-07-24 Mark Iv Ind Ltd Display device with electromagnetically operated movable element and hall effect device operated light switching
US5642130A (en) * 1995-01-17 1997-06-24 Mark Iv Industries Limited Display array and power control circuit
GB2297185B (en) * 1995-01-17 1998-10-28 Mark Iv Ind Ltd Display array and power control circuit
FR2825156A1 (fr) * 2001-05-28 2002-11-29 Valeo Vision Dispositif de detection de l'etat d'un electro-aimant
EP1262785A1 (de) * 2001-05-28 2002-12-04 Valeo Vision Gerät zur Feststellung des Zustandes eines Elektromagneten
CN109708568A (zh) * 2018-12-04 2019-05-03 天津津航技术物理研究所 一种用于霍尔器件角度检测系统的信号处理装置

Also Published As

Publication number Publication date
EP0316493B1 (de) 1990-06-20
ES2016378B3 (es) 1990-11-01
DE3763346D1 (de) 1990-07-26
ATE54031T1 (de) 1990-07-15

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