EP1493063B1 - Electric motor-operated drive device comprising an initial fault safety system - Google Patents

Electric motor-operated drive device comprising an initial fault safety system Download PDF

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Publication number
EP1493063B1
EP1493063B1 EP03745770A EP03745770A EP1493063B1 EP 1493063 B1 EP1493063 B1 EP 1493063B1 EP 03745770 A EP03745770 A EP 03745770A EP 03745770 A EP03745770 A EP 03745770A EP 1493063 B1 EP1493063 B1 EP 1493063B1
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EP
European Patent Office
Prior art keywords
drive device
electric motor
operated drive
motor
switch elements
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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 - Fee Related
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EP03745770A
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German (de)
French (fr)
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EP1493063A1 (en
Inventor
Ralf Bokämper
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.)
Dewert Antriebs und Systemtechnik GmbH and Co KG
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Dewert Antriebs und Systemtechnik GmbH and Co KG
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C20/00—Head -, foot -, or like rests for beds, sofas or the like
    • A47C20/04—Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination
    • A47C20/041—Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination by electric motors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G2203/00—General characteristics of devices
    • A61G2203/10—General characteristics of devices characterised by specific control means, e.g. for adjustment or steering
    • A61G2203/12—Remote controls
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/002—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
    • A61G7/018—Control or drive mechanisms

Definitions

  • the invention relates to an electromotive drive arrangement with first fault safety system for furniture according to the preamble of claim 1.
  • Such drive arrangements are known, for example from the DE 19647836 , which describes redundant key contacts of the operating units and two power actuators connected in series.
  • the shows DE 19715642 a manual operation with different sensors that react to the characteristics of the operator and only allow functions of the drive to be performed when the operator uses the manual control.
  • EP-A-0 787 475 discloses a control system for electromotive actuators on hospital beds or similar furniture, with a power supply, a hand control, and a controller that verifies the existence of a correct function.
  • the object of the invention is to provide a drive arrangement with a first fault safety system which offers a high degree of safety in accordance with the applicable standards through redundancy and additional measures, while at the same time having further advantages and incorporating new empirical values.
  • monitoring block controls a switching device for disconnecting the entire drive assembly of a power grid when a first error occurs.
  • the electromotive drive assembly according to the invention with first fault safety system has a control with a monitoring block which is arranged between an input / output block and a control of the switching elements of the drive motors, All safety-relevant parameters, in particular those resulting from empirical values obtained are monitored by suitable sensors and Although advantageously throughout the system and not just one or a few system components. These parameters are temperature, humidity, current, voltage drop, etc.
  • the sensors pass their signals via an input / output block to the monitoring block.
  • the controls are also equipped with sensors and connected to the input / output block. Additional safety switches, such as Emergency stop switching elements are also provided.
  • the monitoring block not only affects the switching on and off of the drive motors but also, for example, the switching off of the entire power supply via a controllable power switch, in a further embodiment, the activation of a non-reversible fuse element is possible, so that the drive completely shut down becomes.
  • the monitoring block signals fault states or operational readiness via the input / output block.
  • Particularly advantageous embodiment is automatically triggered by special errors that mean major security hazards, a higher-level alarm and fire fighting, for example. This is possible, for example, if additional environmental sensors for smoke, fire, etc. are integrated into the first fault safety system.
  • Particularly advantageous is the ability to monitor and evaluate the first fault safety system according to the invention of higher-level security, or make remote maintenance. This is made possible by advantageous connections via the input / output block to local, regional and supraregional networks.
  • test button is located either in the manual control and / or control box or connected separately.
  • Optical displays of operating and fault conditions as well as acoustic signal means are provided and controlled via the input / output block.
  • a history of error rates may be stored and retrieved in an ad, and / or provided at a port for, for example, a parent security or maintenance computer.
  • the switching elements of the drive motors are formed by manual operation and control box.
  • the motor currents are switched directly in the manual control and control box, a control of the switching elements of the motors by the controller is eliminated. It is also possible to switch an emergency stop switching element directly into the power supply line of the motors.
  • Manual control and control box consist in this case of first fail-safe components, such as adapted to the motor currents positively driven switching elements. In the event of a fault, the monitoring block shuts off the entire power supply or triggers suitable fuse elements.
  • an electromotive drive arrangement with first fault safety system is advantageously made adaptable to the environment and the boundary conditions, including integration into existing higher-level safety systems.
  • FIG. 3 illustrates a block diagram of a possible exemplary embodiment of an electromotive furniture drive according to the invention with two motors 19, 20.
  • the left half of the drawing shows a so-called power circuit starting with a mains connection 38 and protective conductor terminal 39.
  • a power supply 10 for example a transformer with rectification and screening, is provided via a switching device 9, eg a power switch, which can also be designed remotely controlled in a particularly advantageous manner , connected to the electrical mains.
  • the power supply 10 provides via a fuse element 12 and a power switching unit 17 the two motors 19, 20 of the drive 18 electrical energy high power.
  • An additional auxiliary supply 11 for example an accumulator, is likewise connected to the power switching unit 17 via a fuse element 13 for supplying the motors 19, 20, for example in the event of a power failure.
  • the power switching unit 17 consists of one or more known switching elements 14, as well as known motor switching elements 15, 16, two of which are each associated with a motor 19, 20.
  • the switching elements 14 and the motor switching elements 15, 16 are, for example, relays and / or semiconductor switches, which are switched on and off by a control block 3 of a control unit 1 via control lines 40, 41, and / or controlled.
  • the switching elements 14 and the motor switching elements 15, 16 may also be designed as positively driven safety relays.
  • the motor supply lines each have a fuse element 21, 22 for protecting the motors 19, 20 and the lines.
  • the control unit 1 consists of a monitoring block 2, the control block 3 and an input / output block 4, the bidirectionally exchange data with each other, which is represented by two arrows.
  • a manual control 5 and a control box 6 are connected, via which the motors 19, 20 of the drive 18 can be adjusted by, for example, by pressing a button on the handset 5 or the control box 6, a signal via the monitoring block 2 to the Control block 3 and then to the power switching unit 17 is passed.
  • Manual control 5 and control box 6 are first fail-safe units.
  • a LAN connection 34 sends a message over an existing network to a higher-level monitoring station. This can likewise take place via a further connection 35, for example via the Internet and / or, for example, via a Powerline (PLC) connection.
  • PLC Powerline
  • connection 36 are connected to an emergency call and port 37 with a fire alarm / combat system, which also a wireless call / message system can be used for this purpose, for example, an integrated radio transmitter.
  • a fire alarm / combat system which also a wireless call / message system can be used for this purpose, for example, an integrated radio transmitter.
  • the monitoring sensors are placed at the points which, according to empirical values, can form potential danger spots. You monitor the following parameters: Temperature: Connection 23-27, 29, 30 humidity: Connection 28-30, 46 Current: Connection 25 Other monitoring sensors, for example for the environment of the drive are also conceivable.
  • the monitoring of the power switching unit is also carried out by known methods that determine whether the relay used is a contact bonding.
  • Another security provides the switching device 9, with the whole device can be separated from the mains bipolar. Also, such a switching device for the auxiliary supply 11 is conceivable, but not shown.
  • the power supply of the control unit is advantageously carried out separately, but may also be connected to the power supply 10.
  • control devices such as handset 5 and control box 6 can already be equipped with sensors on the production side, which by suitable means z. B. via the respective connection cable 42, 43 are connected to the input / output block 8.
  • At least one emergency stop button 7 is connected to the input / output block 4, which can be operated immediately in case of danger by the operator or the supervisor.
  • At least one actuating element 8, 8 ' is provided which is arranged either in the manual control 5, in the control box 6 or separately.
  • the monitoring block 2 is checked by activating a tester 47 regularly according to the manual function, a message is successful test via an optical test indicator 33, such as a signal light and / or the acoustic detector 31. If an error is found during the review, it will this is indicated by the optical error indicator 32 and / or the acoustic alarm 31.
  • the performance of the periodic check is passed via the terminals 34, 35 to higher-level monitoring units for recording, a retransmission in the form of an alarm signal via the terminals 36, 37 is carried out only in a limited manner by the signal line is checked.
  • the monitoring of the monitoring block 2 can also be done automatically, if, for example, this is stored in the program of a microprocessor control. A higher-level check via the connections 34, 35 is also conceivable.
  • Fig. 2 a minimal configuration of the furniture drive according to the invention is shown as a block diagram.
  • the control of the power switching unit 17 of the motors is eliminated, the switching element 14 is formed by the control box 6, which has electromechanical switching elements 48, for example in the form of rotary and / or toggle switches.
  • the motor switching elements 15, 16 are formed by the manual control 5, which also having electromechanical switching elements 49, for example in the form of rotary and / or tilt buttons.
  • the electromechanical switching elements 48, 49 are first-fail-safe, for example positively driven switching elements, suitable for switching high motor currents, which are conducted in this case directly by manual control 5 and control box 6.
  • the monitoring unit 2 switches off the power supply directly, for example via the switching device 9 and / or by destruction / disconnection of the fuses 12, 13 (not shown).
  • the invention is not limited to the illustrated example, drive configurations with only one or even more than 2 drives are of course conceivable. Also, depending on the overall concept of the furniture and its environment, a restriction or extension of the components is possible.
  • an electromotive drive assembly is realized with a first fault safety system, which not only allows intervention in the control, but allows a comprehensive advantageous protection with integration into higher-level local and regional security and alarm systems.

Abstract

The invention relates to an electric motor-operated drive device comprising an initial fault safety system for furniture, particularly for hospital and nursing beds, consisting of a power supply (10, 11), at least one motor (19, 20), a power-switching unit (17), at least one manual control (5), a control box (6) and of a controller (1) provided with a monitoring block (2). In the event of an initial fault, said monitoring block (2) carries out appropriate measures for preventing the drive device from moving on its own, composes corresponding fault messages and sends signals to higher-level monitoring devices, optionally initiates emergency calls and comprises a testing device (47) for testing the fault notification and recognition system.

Description

Die Erfindung betrifft eine elektromotorische Antriebsanordnung mit Erstfehlersicherheitssystem für Möbel nach dem Oberbegriff des Anspruchs 1.The invention relates to an electromotive drive arrangement with first fault safety system for furniture according to the preamble of claim 1.

Derartige Antriebsanordnungen sind bekannt, zum Beispiel aus der DE 19647836 , die redundante Tastenkontakte der Bedienungseinheiten und zwei in Reihe geschaltete Leistungsstellglieder beschreibt.Such drive arrangements are known, for example from the DE 19647836 , which describes redundant key contacts of the operating units and two power actuators connected in series.

Weiterhin zeigt die DE 19715642 eine Handbedienung mit unterschiedlichen Sensoren, die auf Eigenschaften des Bedieners reagieren und nur dann Funktionen des Antriebs ausführen lassen, wenn der Bediener die Handbedienung benutzt.Furthermore, the shows DE 19715642 a manual operation with different sensors that react to the characteristics of the operator and only allow functions of the drive to be performed when the operator uses the manual control.

EP-A-0 787 475 offenbart ein Steuerungssystem für elektromotorisch betätigbare Verstelleinrichtungen an Krankenhausbetten oder ähnlichen Möbeln, mit einer Stromversorgung, einer Handbedienung und einer Steuerung, die das Vorliegen einer korrekten Funktion überprüft. EP-A-0 787 475 discloses a control system for electromotive actuators on hospital beds or similar furniture, with a power supply, a hand control, and a controller that verifies the existence of a correct function.

DE 201 05 656 U1 beschreibt eine Sicherheitsvorrichtung für elektrisch angetriebene Pflege- und Krankenbetten. DE 201 05 656 U1 describes a safety device for electrically driven care and hospital beds.

US 5,771,511 beschreibt ein Kommunikationsnetzwerk für ein Krankenhausbett. US 5,771,511 describes a communication network for a hospital bed.

US 5,195,198 beschreibt ein Krankenhausbett mit elektromotorischem Antrieb, bei dem bestimmte Schaltungsbereiche von einer Gleichspannungsversorgung trennbar sind. US 5,195,198 describes a hospital bed with electromotive drive, in which certain circuit areas are separable from a DC power supply.

Als nachteilig zeigt sich bei den bekannten Anordnungen, dass zum Teil nur einzelne Komponenten erstfehlersicher ausgelegt sind, jedoch nicht das Gesamtsystem.A disadvantage is shown in the known arrangements that sometimes only individual components are designed first fail-safe, but not the overall system.

Die Aufgabe der Erfindung besteht darin, eine Antriebsanordnung mit einem Erstfehlersicherheitssystem zu schaffen, welches ein hohes Maß an Sicherheit gemäß der geltenden Normen durch Redundanz und zusätzliche Maßnahmen bietet, und gleichzeitig weitere Vorteile aufweist und neue Erfahrungswerte mit einbezieht.The object of the invention is to provide a drive arrangement with a first fault safety system which offers a high degree of safety in accordance with the applicable standards through redundancy and additional measures, while at the same time having further advantages and incorporating new empirical values.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass der Überwachungsblock bei Auftreten eines ersten Fehlers eine Schaltvorrichtung zum Trennen der gesamten Antriebsanordnung von einem Stromnetz ansteuert.This object is achieved in that the monitoring block controls a switching device for disconnecting the entire drive assembly of a power grid when a first error occurs.

Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen enthalten.Advantageous developments of the invention are contained in the subclaims.

Die erfindungsgemäße elektromotorische Antriebsanordnung mit Erstfehlersicherheitssystem besitzt eine Steuerung mit einem Überwachungsblock, der zwischen einem Ein-/Ausgabeblock und einer Ansteuerung der Schaltelemente der Antriebsmotoren angeordnet ist, Alle sicherheitsrelevanten Parameter, insbesondere die, die sich aus gewonnenen Erfahrungswerten ergeben, werden mittels geeigneter Sensoren überwacht und zwar vorteilhafterweise im gesamten System und nicht nur an einer oder wenigen Systemkomponenten. Diese Parameter sind Temperatur, Feuchte, Stromstärke, Spannungsabfall usw.The electromotive drive assembly according to the invention with first fault safety system has a control with a monitoring block which is arranged between an input / output block and a control of the switching elements of the drive motors, All safety-relevant parameters, in particular those resulting from empirical values obtained are monitored by suitable sensors and Although advantageously throughout the system and not just one or a few system components. These parameters are temperature, humidity, current, voltage drop, etc.

Die Sensoren geben ihre Signale über einen Ein-/Ausgabeblock an den Überwachungsblock weiter.The sensors pass their signals via an input / output block to the monitoring block.

Auch die Bedienungselemente sind mit Sensoren ausgerüstet und an den Ein-/Ausgabeblock angeschlossen. Zusätzliche Sicherheitsschalter wie z.B. Not-Aus-Schaltelemente sind ebenfalls vorgesehen.The controls are also equipped with sensors and connected to the input / output block. Additional safety switches, such as Emergency stop switching elements are also provided.

In Abhängigkeit der Sensorsignale beeinflußt der Überwachungsblock nicht nur das Ein- und Ausschalten der Antriebsmotoren sondern auch zum Beispiel das Ausschalten der gesamten Stromversorgung über einen steuerbaren Netzschalter, in weiterer Ausgestaltung ist auch die Aktivierung eines nicht reversiblen Sicherungselementes möglich, so dass der Antrieb vollständig still gelegt wird.Depending on the sensor signals, the monitoring block not only affects the switching on and off of the drive motors but also, for example, the switching off of the entire power supply via a controllable power switch, in a further embodiment, the activation of a non-reversible fuse element is possible, so that the drive completely shut down becomes.

Gleichzeitig signalisiert der Überwachungsblock über den Ein-/Ausgabeblock Fehlerzustände oder Betriebsbereitschaft. In besonders vorteilhafter Ausgestaltung wird bei besonderen Fehlern, die große Sicherheitsgefahren bedeuten, ein übergeordneter Alarm und beispielsweise Brandbekämpfung automatisch ausgelöst. Das ist zum Beispiel möglich, wenn zusätzliche Umgebungssensoren für Rauch, Feuer, etc. in das Erstfehlersicherheitssystem integriert sind.At the same time, the monitoring block signals fault states or operational readiness via the input / output block. In Particularly advantageous embodiment is automatically triggered by special errors that mean major security hazards, a higher-level alarm and fire fighting, for example. This is possible, for example, if additional environmental sensors for smoke, fire, etc. are integrated into the first fault safety system.

Besonders vorteilhaft ist die Möglichkeit, das erfindungsgemäße Erstfehlersicherheitssystem von übergeordneten Sicherheitswarten zu überwachen und auszuwerten, bzw. Fernwartungen vorzunehmen. Dieses wird durch vorteilhafte Anschlüsse über den Ein-/Ausgabeblock an lokale, regionale und überregionale Netzwerke einfachst ermöglicht.Particularly advantageous is the ability to monitor and evaluate the first fault safety system according to the invention of higher-level security, or make remote maintenance. This is made possible by advantageous connections via the input / output block to local, regional and supraregional networks.

Eine der zuständigen geltenden Norm entsprechende Prüfeinrichtung des Fehlermeldesystems des Erstfehlersicher-heitssystems ist integriert und kann entweder automatisch intern oder beispielsweise von einer Sicherheitswarte von außen, sowie auch durch regelmäßiges Auslösen eines Betätigungselementes, zum Beispiel eines Prüftasters, aktiviert werden. Dieser Prüftaster ist entweder in der Handbedienung und/oder Kontrollbox angeordnet oder separat angeschlossen.One of the relevant applicable standard corresponding test device of the error message system of Erstfehlersicher- safety system is integrated and can either automatically internally or for example by a security control from the outside, as well as by regular triggering of an actuator, such as a test button, activated. This test button is located either in the manual control and / or control box or connected separately.

Optische Anzeigen der Betriebs- und Fehlerzustände sowie akustische Signalmittel sind vorgesehen und über den Ein-/Ausgabeblock angesteuert.Optical displays of operating and fault conditions as well as acoustic signal means are provided and controlled via the input / output block.

Eine Selbstdiagnose bei Fehlerzuständen ist möglich. Beispielsweise kann eine Historie von Fehlerhäufigkeiten gespeichert und in einer Anzeige aufgerufen werden, und/oder an einem Anschluss für beispielsweise eine übergeordnete Sicherheitswarte oder einen Wartungscomputer bereit gestellt werden.Self-diagnosis in case of error conditions is possible. For example, a history of error rates may be stored and retrieved in an ad, and / or provided at a port for, for example, a parent security or maintenance computer.

Ein Anschluss von schon erstfehlersicheren Bedienungsteilen, wie zum Beispiel Handbedienung mit Doppelkontakten, Kontrollbox mit erstfehlersicheren Schaltelementen, ist im weiten Bereich möglich.A connection of already fail-safe operating parts, such as manual operation with double contacts, control box with fail-safe switching elements, is possible in a wide range.

Es wird weiterhin eine Minimalkonfiguration der elektromotorischen Antriebsanordnung mit Erstfehlersicherheitssystem vargeschlagen, bei der die Schaltelemente der Antriebsmotoren durch Handbedienung und Kontrollbox gebildet werden. Hierbei werden die Motorströme direkt in der Handbedienung und Kontrollbox geschaltet, eine Ansteuerung der Schaltelemente der Motoren durch die Steuerung entfällt.
Es ist auch möglich, ein Not-Aus-Schaltelement direkt in die Stromversorgungsleitung der Motoren zu schalten.
Handbedienung und Kontrollbox bestehen in diesem Fall aus erstfehlersicheren Komponenten, wie beispielsweise an die Motorströme angepasste zwangsgeführte Schaltelemente. Im Fehlerfall schaltet der Überwachungsblock die gesamte Stromversorgung ab, bzw. löst geeignete Sicherungselemente aus.Furthermore, a minimal configuration of the electromotive drive arrangement with first fault safety system is proposed, in which the switching elements of the drive motors are formed by manual operation and control box. Here, the motor currents are switched directly in the manual control and control box, a control of the switching elements of the motors by the controller is eliminated.
It is also possible to switch an emergency stop switching element directly into the power supply line of the motors.
Manual control and control box consist in this case of first fail-safe components, such as adapted to the motor currents positively driven switching elements. In the event of a fault, the monitoring block shuts off the entire power supply or triggers suitable fuse elements.

Somit wird eine elektromotorische Antriebsanordnung mit Erstfehlersicherheitssystem in vorteilhafter Weise anpassungsfähig an die Umgebung und die Randbedingungen inklusive einer Integration in bestehende übergeordnete Sicherheitssysteme geschaffen.Thus, an electromotive drive arrangement with first fault safety system is advantageously made adaptable to the environment and the boundary conditions, including integration into existing higher-level safety systems.

Die Erfindung wird in der nachfolgenden Beschreibung anhand der Zeichnungen noch näher erläutert. Hierbei zeigt

Fig. 1
ein Blockschaltbild des erfindungsgemäßen Möbelantriebs und
Fig. 2
ein weiteres Blockschaltbild des erfindungsgemäßen Möbelantriebs.
The invention will be explained in more detail in the following description with reference to the drawings. This shows
Fig. 1
a block diagram of the furniture drive according to the invention and
Fig. 2
another block diagram of the furniture drive according to the invention.

Fig. 1 stellt ein Blockschaltbild einer möglichen beispielhaften Ausführung eines erfindungsgemäßen elektromotorischen Möbelantriebs mit zwei Motoren 19, 20 dar.
Die linke Hälfte der Zeichnung zeigt einen sogenannten Leistungskreis beginnend mit einem Netzanschluss 38 und Schutzleiteranschluss 39. Eine Stromversorgung 10, beispielsweise ein Transformator mit Gleichrichtung und Siebung, wird über eine Schaltvorrichtung 9, z.B. einen Netzschalter, der auch in besonders vorteilhafter Weise fernsteuerbar ausgebildet sein kann, an das elektrische Stromnetz angeschlossen. Fig. 1 FIG. 3 illustrates a block diagram of a possible exemplary embodiment of an electromotive furniture drive according to the invention with two motors 19, 20.
The left half of the drawing shows a so-called power circuit starting with a mains connection 38 and protective conductor terminal 39. A power supply 10, for example a transformer with rectification and screening, is provided via a switching device 9, eg a power switch, which can also be designed remotely controlled in a particularly advantageous manner , connected to the electrical mains.

Die Stromversorgung 10 stellt über ein Sicherungselement 12 und eine Leistungsschalteinheit 17 den zwei Motoren 19, 20 des Antriebs 18 elektrische Energie hoher Leistung bereit.The power supply 10 provides via a fuse element 12 and a power switching unit 17 the two motors 19, 20 of the drive 18 electrical energy high power.

Eine zusätzliche Hilfsversorgung 11, zum Beispiel ein Akkumulator, ist ebenfalls über ein Sicherungselement 13 zur Versorgung der Motoren 19, 20 zum Beispiel bei Netzausfall, an die Leistungsschalteinheit 17 angeschlossen.An additional auxiliary supply 11, for example an accumulator, is likewise connected to the power switching unit 17 via a fuse element 13 for supplying the motors 19, 20, for example in the event of a power failure.

Die Leistungsschalteinheit 17 besteht aus einem oder mehreren bekannten Schaltelementen 14, sowie bekannten Motorschaltelementen 15, 16, von denen jeweils zwei einem Motor 19, 20 zugeordnet sind. Die Schaltelemente 14 und die Motorschaltelemente 15, 16 sind beispielsweise Relais und/oder Halbleiterschalter, die von einem Ansteuerungsblock 3 einer Steuereinheit 1 über Steuerleitungen 40, 41 ein- und ausgeschaltet, bzw. auf- und zugesteuert werden.The power switching unit 17 consists of one or more known switching elements 14, as well as known motor switching elements 15, 16, two of which are each associated with a motor 19, 20. The switching elements 14 and the motor switching elements 15, 16 are, for example, relays and / or semiconductor switches, which are switched on and off by a control block 3 of a control unit 1 via control lines 40, 41, and / or controlled.

Die Schaltelemente 14 und die Motorschaltelemente 15, 16 können auch als zwangsgeführte Sicherheitsrelais ausgebildet sein.
Die Motorzuleitungen weisen jeweils ein Sicherungselement 21, 22 zum Schutz der Motoren 19, 20 und der Leitungen auf.The switching elements 14 and the motor switching elements 15, 16 may also be designed as positively driven safety relays.
The motor supply lines each have a fuse element 21, 22 for protecting the motors 19, 20 and the lines.

Die Steuereinheit 1 besteht aus einem Überwachungsblock 2, dem Ansteuerungsblock 3 und einem Ein-/Ausgabeblock 4, die untereinander bidirektional Daten austauschen, welches durch zwei Pfeile dargestellt ist.The control unit 1 consists of a monitoring block 2, the control block 3 and an input / output block 4, the bidirectionally exchange data with each other, which is represented by two arrows.

Am Ein-/Ausgabeblock 4 sind eine Handbedienung 5 und eine Kontrollbox 6 angeschlossen, über die die Motoren 19, 20 des Antriebs 18 verstellt werden Können, indem beispielsweise durch Knopfdruck an der Handbedienung 5 oder der Kontrollbox 6 ein Signal über den Überwachungsblock 2 an den Ansteuerungsblock 3 und dann an die Leistungsschalteinheit 17 geleitet wird. Handbedienung 5 und Kontrollbox 6 sind erstfehlersichere Baueinheiten.At the input / output block 4, a manual control 5 and a control box 6 are connected, via which the motors 19, 20 of the drive 18 can be adjusted by, for example, by pressing a button on the handset 5 or the control box 6, a signal via the monitoring block 2 to the Control block 3 and then to the power switching unit 17 is passed. Manual control 5 and control box 6 are first fail-safe units.

Bei Vorliegen eines ersten Fehlers, der durch Sensoren über Sensoranschlüsse 23 - 30, 46 über den Ein-/Ausgabeblock 4 an den Überwachungsblock 2 weitergeleitet wird, leitet dieser ein Aktivierungssignal aus den Bedieneinheiten 5, 6 nicht mehr an den Ansteuerungsblock 3 weiter, bzw. unterbricht eine laufende Bewegung durch Abschalten der Leistungsschalteinheit 17 und gibt je nach Fehlerart eine entsprechende Fehlermeldung an den Ein-/Ausgabeblock 4.In the presence of a first error, which is forwarded by sensors via sensor connections 23 - 30, 46 via the input / output block 4 to the monitoring block 2, this no longer forwards an activation signal from the operating units 5, 6 to the control block 3, or interrupts a current movement by switching off the power switching unit 17 and gives depending on the type of error a corresponding error message to the input / output block. 4

Es erfolgt eine optische Anzeige über einen Fehlermelder 32 und/oder über einen Akustikmelder 31. Weiterhin ist es denkbar, dass die Schaltvorrichtung 9 ausgelöst wird, so dass eine komplette Strom- versorgungsabschaltung erfolgt. Ebenfalls kann bei bestimmten Fehlern die Zerstörung eines bestimmten Bauteils z.B. der Sicherungen 12, 13 durch den Überwachungsblock 2 eingeleitet werden, was eine beabsichtigte Unbrauchbarkeit des Antriebssystems zur Folge hat.There is an optical display via an error indicator 32 and / or an acoustic alarm 31. Furthermore, it is conceivable that the switching device 9 is triggered, so that a complete power supply shutdown takes place. Also, in certain errors, the destruction of a particular component such as the fuses 12, 13 are initiated by the monitoring block 2, which has an intentional uselessness of the drive system result.

Über einen LAN-Anschluss 34 wird eine Meldung über ein bestehendes Netzwerk an eine übergeordnete Überwachungsstelle geleitet. Dies kann ebenfalls über einen weiteren Anschluss 35 erfolgen, beispielsweise über das Internet und/oder zum Beispiel über eine Powerline (PLC)-Verbindung.A LAN connection 34 sends a message over an existing network to a higher-level monitoring station. This can likewise take place via a further connection 35, for example via the Internet and / or, for example, via a Powerline (PLC) connection.

Bei besonderen auftretenden Fehlern sind Anschluss 36 mit einem Notruf und Anschluss 37 mit einer Brandmelde-/bekämpfungsanlage verbunden, wobei auch hierfür ein drahtloses Ruf-/Meldesystem zum Einsatz kommen kann, beispielsweise ein integrierter Funksender. Somit ist eine vorteilhaft ständige Überwachung von außen einschließlich einer direkten Alarmauslösung ermöglicht.In case of particular errors occurring connection 36 are connected to an emergency call and port 37 with a fire alarm / combat system, which also a wireless call / message system can be used for this purpose, for example, an integrated radio transmitter. Thus, an advantageous permanent external monitoring including a direct alarm triggering is possible.

Die Überwachungssensoren sind an den Stellen plaziert, die gemäß den Erfahrungswerten potentielle Gefahrenstellen bilden können. Sie überwachen die folgenden Parameter: Temperatur: Anschluss 23-27, 29, 30 Feuchte: Anschluss 28-30, 46 Stromstärke: Anschluss 25 Weitere Überwachungssensoren zum Beispiel für die Umgebung des Antriebs sind ebenfalls denkbar.The monitoring sensors are placed at the points which, according to empirical values, can form potential danger spots. You monitor the following parameters: Temperature: Connection 23-27, 29, 30 humidity: Connection 28-30, 46 Current: Connection 25 Other monitoring sensors, for example for the environment of the drive are also conceivable.

Die Überwachung der Leistungsschalteinheit erfolgt außerdem mit bekannten Verfahren, die feststellen, ob bei verwendeten Relais ein Kontaktkleben vorliegt.The monitoring of the power switching unit is also carried out by known methods that determine whether the relay used is a contact bonding.

Eine weitere Sicherheit bietet die Schaltvorrichtung 9, mit der das ganze Gerät zweipolig vom Netz getrennt werden kann. Ebenfalls ist eine solche Schaltvorrichtung für die Hilfsversorgung 11 denkbar, jedoch nicht dargestellt.Another security provides the switching device 9, with the whole device can be separated from the mains bipolar. Also, such a switching device for the auxiliary supply 11 is conceivable, but not shown.

Die Stromversorgung der Steuereinheit wird vorteilhafterweise separat vorgenommen, kann aber auch an der Stromversorgung 10 angeschlossen sein.The power supply of the control unit is advantageously carried out separately, but may also be connected to the power supply 10.

Zum Teil können die Bedienungsgeräte wie Handbedienung 5 und Kontrollbox 6 schon herstellungsseitig mit Sensoren bestückt sein, die mit geeigneten Mitteln z. B. über die jeweiligen Anschlusskabel 42, 43 mit dem Ein-/Ausgabeblock 8 verbunden sind.In some cases, the control devices such as handset 5 and control box 6 can already be equipped with sensors on the production side, which by suitable means z. B. via the respective connection cable 42, 43 are connected to the input / output block 8.

Weiterhin ist mindestens ein Not-Aus-Taster 7 an den Ein-/Ausgabeblock 4 angeschlossen, der bei einer Gefahr sofort vom Bediener oder vom Aufsichtspersonal betätigt werden kann.Furthermore, at least one emergency stop button 7 is connected to the input / output block 4, which can be operated immediately in case of danger by the operator or the supervisor.

Zur Überprüfung des Überwachungsblocks 2 ist mindestens ein Betätigungselement 8, 8' vorgesehen, das entweder in der Handbedienung 5, in der Kontrollbox 6 oder separat angeordnet ist. Hiermit wird der Überwachungsblock 2 durch Aktivierung einer Prüfeinrichtung 47 regelmäßig gemäß Bedienungsanleitung auf Funktion überprüft, eine Meldung erfolgt bei erfolgreicher Prüfung über einen optischen Prüfmelder 33, beispielsweise eine Meldeleuchte und/oder über den Akustikmelder 31. Wird bei der Überprüfung ein Fehler festgestellt, so wird dieser durch den optischen Fehlermelder 32 und/oder den Akustikmelder 31 angezeigt. Die Durchführung der regelmäßigen Prüfung wird über die Anschlüsse 34, 35 an übergeordnete Überwachungseinheiten zur Aufzeichnung weitergegeben, eine Weitermeldung in Form eines Alarmsignals über die Anschlüsse 36, 37 wird nur in eingeschränkter Weise durchgeführt, indem die Signalleitung geprüft wird.For checking the monitoring block 2, at least one actuating element 8, 8 'is provided which is arranged either in the manual control 5, in the control box 6 or separately. Hereby, the monitoring block 2 is checked by activating a tester 47 regularly according to the manual function, a message is successful test via an optical test indicator 33, such as a signal light and / or the acoustic detector 31. If an error is found during the review, it will this is indicated by the optical error indicator 32 and / or the acoustic alarm 31. The performance of the periodic check is passed via the terminals 34, 35 to higher-level monitoring units for recording, a retransmission in the form of an alarm signal via the terminals 36, 37 is carried out only in a limited manner by the signal line is checked.

Die Überprüfung des Überwachungsblocks 2 kann auch automatisch erfolgen, wenn beispielsweise im Programm einer Mikroprozessorsteuerung dieses abgelegt ist. Auch eine übergeordnete Überprüfung über die Anschlüsse 34, 35 ist ebenfalls denkbar.The monitoring of the monitoring block 2 can also be done automatically, if, for example, this is stored in the program of a microprocessor control. A higher-level check via the connections 34, 35 is also conceivable.

In Fig. 2 ist eine Minimalkonfiguration des erfindungsgemäßen Möbelantriebs als Blockschaltbild dargestellt. Die Ansteuerung der Leistungsschalteinheit 17 der Motoren entfällt, das Schaltelement 14 wird durch die Kontrollbox 6 gebildet, welche elektromechanische Schaltelemente 48 beispielsweise in Form von Dreh- und/oder Kippschaltern aufweist. Die Motorschaltelemente 15, 16 werden durch die Handbedienung 5 gebildet, welche ebenfalls elektromechanische Schaltelemente 49 beispielsweise in Form von Dreh- und/oder Kipptastern aufweist.
Die elektromechanischen Schaltelemente 48, 49 sind erstfehlersichere zum Beispiel zwangsgeführte Schaltelemente, geeignet zum Schalten von hohen Motorströmen, die in diesem Fall direkt durch Handbedienung 5 und Kontrollbox 6 geleitet werden. Im Fehlerfall schaltet die Überwachungseinheit 2 die Strom-versorgung direkt aus, beispielsweise über die Schaltvorrichtung 9 und/oder durch Zerstörung/Ausschaltung der Sicherungen 12, 13 (nicht dargestellt).In Fig. 2 a minimal configuration of the furniture drive according to the invention is shown as a block diagram. The control of the power switching unit 17 of the motors is eliminated, the switching element 14 is formed by the control box 6, which has electromechanical switching elements 48, for example in the form of rotary and / or toggle switches. The motor switching elements 15, 16 are formed by the manual control 5, which also having electromechanical switching elements 49, for example in the form of rotary and / or tilt buttons.
The electromechanical switching elements 48, 49 are first-fail-safe, for example positively driven switching elements, suitable for switching high motor currents, which are conducted in this case directly by manual control 5 and control box 6. In the event of a fault, the monitoring unit 2 switches off the power supply directly, for example via the switching device 9 and / or by destruction / disconnection of the fuses 12, 13 (not shown).

Die Erfindung ist nicht auf das dargestellte Beispiel beschränkt, Antriebskonfigurationen mit nur einem oder auch mehr als 2 Antrieben sind selbstverständlich denkbar.
Ebenfalls ist abhängig vom Gesamtkonzept des Möbels und seiner Umgebung eine Einschränkung oder Erweiterung der Komponenten möglich.The invention is not limited to the illustrated example, drive configurations with only one or even more than 2 drives are of course conceivable.
Also, depending on the overall concept of the furniture and its environment, a restriction or extension of the components is possible.

Somit wird eine elektromotorische Antriebsanordnung mit einem Erstfehlersicherheitssystem realisiert, welches nicht nur Eingriffe in die Steuerung ermöglicht, sondern einen umfassenden vorteilhaften Schutz mit Integration in übergeordnete lokale und regionale Sicherheits- und Alarmsysteme ermöglicht.Thus, an electromotive drive assembly is realized with a first fault safety system, which not only allows intervention in the control, but allows a comprehensive advantageous protection with integration into higher-level local and regional security and alarm systems.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Steuereinheitcontrol unit
22
Überwachungsblockmonitoring block
33
Ansteuerungsblockcontrol block
44
Ein-/AusgabeblockInput / output block
55
Handbedienungmanual operation
66
KontrollboxControl box
77
Not-Aus-SchaltelementEmergency stop switching element
8, 8'8, 8 '
Betätigungselementactuator
99
Schaltvorrichtungswitching device
1010
Stromversorgungpower supply
1111
Hilfsversorgungauxiliary supply
1212
Sicherungfuse
1313
Sicherungfuse
1414
Schaltelementswitching element
1515
MotorschaltelementMotor switching element
1616
MotorschaltelementMotor switching element
1717
LeistungsschalteinheitPower switching unit
1818
Antriebdrive
1919
Motorengine
2020
Motorengine
2121
Sicherungselementfuse element
2222
Sicherungselementfuse element
2323
Sensoranschlusssensor connection
2424
Sensoranschlusssensor connection
2525
Sensoranschlusssensor connection
2626
Sensoranschlusssensor connection
2727
Sensoranschlusssensor connection
2828
Sensoranschlusssensor connection
2929
Sensoranschlusssensor connection
3030
Sensoranschlusssensor connection
3131
Akustikmeldersounder
3232
Fehlermelder, optischError message, optical
3333
Prüfmeldertest detector
3434
LAN-AnschlussLAN port
3535
Zentrale/AnschlussCentral / Connection
3636
Notrufemergency call
3737
BrandmeldeanschlussFire alarm connection
3838
Netzanschlussmains connection
3939
SchutzleiteranschlussProtective conductor connection
4040
Steuerleitungcontrol line
4141
Steuerleitungcontrol line
4242
Anschluss HandbedienungConnection manual operation
4343
Anschluss KontrollboxConnection control box
4444
Anschluss BetätigungselementConnection actuator
4545
Anschluss Not-AusConnection emergency stop
4646
Sensoranschlusssensor connection
4747
Prüfeinrichtungtest equipment
4848
Schaltelementswitching element
4949
Schaltelementswitching element

Claims (17)

  1. Electric motor-operated drive device comprising a first failure safety system for furniture, hospital and nursing beds, consisting of a power supply (10, 11), at least one drive motor (19, 20), a power-switching unit (17) assigned to the drive motor (19, 20), at least one manual control (5) and a control box (6) to control the drive motor (19, 20) and a controller (1) with a monitoring block (2), wherein the monitoring block (2), in the event of a first failure, carries out appropriate measures to prevent the drive device from moving on its own, produces corresponding error messages and sends signals to higher-level monitoring devices, if necessary initiates emergency calls and has a testing device (47) for testing the monitoring block (2), characterised in that in the event of a first failure, the monitoring block (2) triggers a switching device (9) to disconnect the entire drive device from a mains supply (38).
  2. Electric motor-operated drive device according to claim 1, characterised in that fault-detection sensors (23-30, 46), the manual control (5) and the control box (6) are connected to the monitoring block (2) by means of an input/output block (4).
  3. Electric motor-operated drive device according to claim 1 or 2, characterised in that the testing device (47) is activated by means of an actuation element (8, 8').
  4. Electric motor-operated drive device according to claim 3, characterised in that the actuation element (8) is designed as an integral part of an operating element and/or as a separate actuation element (8').
  5. Electric motor-operated drive device according to claim 3 or 4, characterised in that the actuation element (8, 8') is a test probe.
  6. Electric motor-operated drive device according to claim 1 or 2, characterised in that the testing device (47) is activated automatically.
  7. Electric motor-operated drive device according to claim 6, characterised in that the testing device (47) is automatically activated at regular intervals.
  8. Electric motor-operated drive device according to one or more of claims 1 to 7, characterised in that the input/output block (4) has interfaces to networks, emergency services and alarm operations centres.
  9. Electric motor-operated drive device according to claim 8, characterised in that the interface to emergency services and alarm operations centres is produced wirelessly.
  10. Electric motor-operated drive device according to one or more of claims 1 to 9, characterised in that faults and their rates of occurrence are stored in appropriate form, are displayed by means of a display unit and are made available for control/service and/or monitoring purposes in appropriate form.
  11. Electric motor-operated drive device according to one or more of claims 1 to 10, characterised in that the power switching unit (17) consists of at least one electromechanical switch element and/or electronic switch element (14).
  12. Electric motor-operated drive device according to claim 11, characterised in that the switch element (14) consists of appropriate first-failure safe switch elements (48) in the control box (6).
  13. Electric motor-operated drive device according to claim 12, characterised in that the switch elements (48) are designed as first failure safe positively-driven rotary switches.
  14. Electric motor-operated drive device according to one or more of claims 1 to 13, characterised in that the motor switch elements (15, 16) of the power switching unit (17) consist of electromechanical switch elements and/or electronic switch elements.
  15. Electric motor-operated drive device according to claim 14, characterised in that the motor switch elements (15, 16) consist of appropriate first-failure safe switch elements (49) in the manual control (5).
  16. Electric motor-operated drive device according to claim 15, characterised in that the switch elements (49) are designed as first-failure safe positively-driven touch and/or toggle switches.
  17. Electric motor-operated drive device according to one of the preceding claims characterised in that the switching device (9) is designed as a controllable mains switch or non-reversible security element (12, 13).
EP03745770A 2002-04-05 2003-03-28 Electric motor-operated drive device comprising an initial fault safety system Expired - Fee Related EP1493063B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20205249U DE20205249U1 (en) 2002-04-05 2002-04-05 Electromotive drive arrangement with first fault safety system
DE20205249U 2002-04-05
PCT/EP2003/003222 WO2003085463A1 (en) 2002-04-05 2003-03-28 Electric motor-operated drive device comprising an initial fault safety system

Publications (2)

Publication Number Publication Date
EP1493063A1 EP1493063A1 (en) 2005-01-05
EP1493063B1 true EP1493063B1 (en) 2009-12-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP03745770A Expired - Fee Related EP1493063B1 (en) 2002-04-05 2003-03-28 Electric motor-operated drive device comprising an initial fault safety system

Country Status (5)

Country Link
EP (1) EP1493063B1 (en)
AU (1) AU2003226733A1 (en)
DE (2) DE20205249U1 (en)
NO (1) NO20035384D0 (en)
WO (1) WO2003085463A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006055205B4 (en) * 2006-11-21 2011-04-28 Barthelt, Hans-Peter, Dipl.-Ing. Fail-safe control for nursing beds
DE102007054422A1 (en) * 2007-11-13 2009-05-14 Dewert Antriebs- Und Systemtechnik Gmbh Method for generating first-fail-safe and fault-proof control signals of an operating unit and a corresponding safety device of an electromotive furniture drive
DE202009005020U1 (en) * 2009-07-14 2010-12-16 Dewert Antriebs- Und Systemtechnik Gmbh First-fail-safe electromotive furniture drive
US8621686B2 (en) * 2010-07-09 2014-01-07 Invacare Corporation Power and control system for bed
DE102012217067A1 (en) * 2012-09-21 2014-03-27 Rössle & Wanner GmbH Adjustable spring base for a bed

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3135888A1 (en) * 1981-09-10 1983-03-24 Robert Bosch Gmbh, 7000 Stuttgart SAFETY DEVICE FOR AN ELECTRICAL ACTUATOR
US5195198A (en) * 1992-01-15 1993-03-23 Stryker Corporation Fail-safe bed motion control circuit having a microprocessor
DE9414086U1 (en) * 1994-08-31 1994-11-17 Dewert Antriebs Systemtech Electromotive furniture drive
US5771511A (en) * 1995-08-04 1998-06-30 Hill-Rom, Inc. Communication network for a hospital bed
DE19603318A1 (en) * 1996-01-31 1997-08-14 Dewert Antriebs Systemtech Control system for electric motor-operated adjustment devices for hospital beds
DE19647836A1 (en) * 1996-11-19 1998-05-20 Roemheld A Gmbh & Co Kg Fail-safe control system for electromechanical linear drive units e.g. for hospital bed
DE20105656U1 (en) * 2001-03-30 2001-08-16 Medical Gmbh Medizintechnik Safety device for electrically powered nursing and hospital beds

Also Published As

Publication number Publication date
EP1493063A1 (en) 2005-01-05
AU2003226733A1 (en) 2003-10-20
WO2003085463A1 (en) 2003-10-16
DE20205249U1 (en) 2002-08-01
NO20035384D0 (en) 2003-12-03
DE50312202D1 (en) 2010-01-21

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