EP1493063B1 - Systeme d'entrainement a commande par moteur electrique, muni d'un systeme de securite fonctionnant des l'apparition de la premiere erreur - Google Patents
Systeme d'entrainement a commande par moteur electrique, muni d'un systeme de securite fonctionnant des l'apparition de la premiere erreur Download PDFInfo
- 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
- Authority
- EP
- European Patent Office
- Prior art keywords
- drive device
- electric motor
- operated drive
- motor
- switch elements
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- 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.
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Nursing (AREA)
- Invalid Beds And Related Equipment (AREA)
- Control Of Multiple Motors (AREA)
Abstract
Claims (17)
- Système d'entraînement à commande par moteur électrique, comprenant un système de sécurité fonctionnant dès l'apparition de la première erreur, pour des meubles, des lits d'hôpital et de soins, composé d'une alimentation en courant électrique (10, 11), d'au moins un moteur d'entraînement (19, 20), d'une unité de commutation de puissance (17) associée au moteur d'entraînement (19, 20), d'au moins une commande manuelle (5) et d'un boîtier de commande (6), pour commander le moteur d'entraînement (19, 20), et d'une commande (1) avec un bloc de surveillance (2), le bloc de surveillance (2) appliquant des dispositions appropriées, lors de la survenance d'un premier défaut ou erreur, de manière à empêcher un mouvement propre du système d'entraînement, accomplissant des signalisations de défauts correspondantes et transmettant des signaux à des dispositifs de surveillance hiérarchiquement supérieurs, le cas échéant déclenchant des appels de secours et présentant un dispositif de contrôle (47) pour contrôler le bloc de surveillance (2), caractérisé en ce que le bloc de surveillance (2) commande un dispositif de commutation (9) pour isoler l'ensemble du système d'entraînement vis-à-vis d'un réseau électrique (38), lors de la survenance d'un premier défaut.
- Système d'entraînement à commande par moteur électrique selon la revendication 1, caractérisé en ce que des capteurs (23 à 30, 46), pour la détection de défauts, la commande manuelle (5) et le boîtier de commande (6), sont reliés au bloc de surveillance (2) par l'intermédiaire d'un bloc d'entrée/sortie (4).
- Système d'entraînement à commande par moteur électrique selon la revendication 1 ou 2, caractérisé en ce qu'une activation du dispositif de contrôle (47) s'effectue par l'intermédiaire d'un élément d'actionnement (8, 8').
- Système d'entraînement à commande par moteur électrique selon la revendication 3, caractérisé en ce que l'élément d'actionnement (8) fait partie d'une pièce de commande et/ou est réalisé sous forme d'un élément d'actionnement (8') séparé.
- Système d'entraînement à commande par moteur électrique selon la revendication 3 ou 4, caractérisé en ce que l'élément d'actionnement (8, 8') est une touche d'essai.
- Système d'entraînement à commande par moteur électrique selon la revendication 1 ou 2, caractérisé en ce que le dispositif de contrôle (47) est activé automatiquement.
- Système d'entraînement à commande par moteur électrique selon la revendication 6, caractérisé en ce que l'activation automatique du dispositif de contrôle (47) s'effectue de façon périodique.
- Système d'entraînement à commande par moteur électrique selon l'une ou plusieurs des revendications 1 à 7, caractérisé en ce que le bloc d'entrée/sortie (4) présente des interfaces vis-à-vis de réseaux, d'appels de secours et de centrales d'alarme.
- Système d'entraînement à commande par moteur électrique selon la revendication 8, caractérisé en ce que l'interface vis-à-vis d'appels de secours et de centrales d'alarme s'effectue sans fil.
- Système d'entraînement à commande par moteur électrique selon l'une ou plusieurs des revendications 1 à 9, caractérisé en ce que des états de défaut et leurs fréquences sont mémorisés sous une forme appropriée, affichés au moyen d'un visuel d'affichage et mis à disposition sous une forme appropriée, à des fins de contrôle/entretien et/ou surveillance.
- Système d'entraînement à commande par moteur électrique selon l'une ou plusieurs des revendications 1 à 10, caractérisé en ce que l'unité de commutation de puissance (17) est composé d'au moins un élément de commutation (14) électromécanique et/ou électronique.
- Système d'entraînement à commande par moteur électrique selon la revendication 11, caractérisé en ce que l'élément de commutation (14) est composé d'éléments de commutation (48) appropriés, passant en sécurité dès l'apparition de la première erreur, dans le boîtier de commande (6).
- Système d'entraînement à commande par moteur électrique selon la revendication 12, caractérisé en ce que les éléments de commutation (48) sont réalisés sous forme d'interrupteurs rotatifs à guidage forcé, passant en sécurité dès l'apparition de la première erreur.
- Système d'entraînement à commande par moteur électrique selon l'une ou plusieurs des revendications 1 à 13, caractérisé en ce que des éléments de commutation moteur (15, 16) de l'unité de commutation de puissance (17) sont composés d'éléments de commutation électromécaniques et/ou d'éléments de commutation électroniques.
- Système d'entraînement à commande par moteur électrique selon la revendication 14, caractérisé en ce que les éléments de commutation moteur (15, 16) sont composés d'éléments de commutation (49) appropriés, passant en sécurité dès l'apparition de la première erreur, dans la commande manuelle.
- Système d'entraînement à commande par moteur électrique selon la revendication 15, caractérisé en ce que les éléments de commutation (49) sont réalisés sous forme d'interrupteurs à touches et/ou d'interrupteurs à bascule à guidage forcé, passant en sécurité dès l'apparition de la première erreur.
- Système d'entraînement à commande par moteur électrique selon l'une des revendications précédentes, caractérisé en ce que le dispositif de commutation (9) est réalisé sous forme d'interrupteur de secteur pouvant être commandé, ou d'élément de sécurité (12, 13) non réversible.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20205249U DE20205249U1 (de) | 2002-04-05 | 2002-04-05 | Elektromotorische Antriebsanordnung mit Erstfehlersicherheitssystem |
DE20205249U | 2002-04-05 | ||
PCT/EP2003/003222 WO2003085463A1 (fr) | 2002-04-05 | 2003-03-28 | Systeme d'entrainement a commande par moteur electrique, muni d'un systeme de securite fonctionnant des l'apparition de la premiere erreur |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1493063A1 EP1493063A1 (fr) | 2005-01-05 |
EP1493063B1 true EP1493063B1 (fr) | 2009-12-09 |
Family
ID=7969678
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03745770A Expired - Fee Related EP1493063B1 (fr) | 2002-04-05 | 2003-03-28 | Systeme d'entrainement a commande par moteur electrique, muni d'un systeme de securite fonctionnant des l'apparition de la premiere erreur |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1493063B1 (fr) |
AU (1) | AU2003226733A1 (fr) |
DE (2) | DE20205249U1 (fr) |
NO (1) | NO20035384D0 (fr) |
WO (1) | WO2003085463A1 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006055205B4 (de) * | 2006-11-21 | 2011-04-28 | Barthelt, Hans-Peter, Dipl.-Ing. | Fehlersichere Steuerung für Pflegebetten |
DE102007054422A1 (de) * | 2007-11-13 | 2009-05-14 | Dewert Antriebs- Und Systemtechnik Gmbh | Verfahren zum Erzeugen von erstfehlersicheren und fehlerfesten Steuersignalen einer Bedienungseinheit und eine entsprechende Sicherheitsvorrichtung eines elektromotorischen Möbelantriebs |
DE202009005020U1 (de) * | 2009-07-14 | 2010-12-16 | Dewert Antriebs- Und Systemtechnik Gmbh | Erstfehlersicherer elektromotorischer Möbelantrieb |
US8621686B2 (en) * | 2010-07-09 | 2014-01-07 | Invacare Corporation | Power and control system for bed |
DE102012217067A1 (de) * | 2012-09-21 | 2014-03-27 | Rössle & Wanner GmbH | Verstellbare Unterfederung für ein Bett |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3135888A1 (de) * | 1981-09-10 | 1983-03-24 | Robert Bosch Gmbh, 7000 Stuttgart | Sicherheitseinrichtung fuer eine elektrische stellvorrichtung |
US5195198A (en) * | 1992-01-15 | 1993-03-23 | Stryker Corporation | Fail-safe bed motion control circuit having a microprocessor |
DE9414086U1 (de) * | 1994-08-31 | 1994-11-17 | Dewert Antriebs- und Systemtechnik GmbH & Co KG, 32278 Kirchlengern | Elektromotorischer Möbelantrieb |
US5771511A (en) * | 1995-08-04 | 1998-06-30 | Hill-Rom, Inc. | Communication network for a hospital bed |
DE19603318A1 (de) * | 1996-01-31 | 1997-08-14 | Dewert Antriebs Systemtech | Steuerungssystem für elektromotorisch betätigbare Verstelleinrichtungen für Krankenhausbetten |
DE19647836A1 (de) * | 1996-11-19 | 1998-05-20 | Roemheld A Gmbh & Co Kg | Ansteuerungssystem für elektromechanische Lineareinheiten zur Fehlersicherheit |
DE20105656U1 (de) * | 2001-03-30 | 2001-08-16 | Medical Gmbh Medizintechnik | Sicherheitsvorrichtung für elektrisch angetriebene Pflege- und Krankenbetten |
-
2002
- 2002-04-05 DE DE20205249U patent/DE20205249U1/de not_active Expired - Lifetime
-
2003
- 2003-03-28 DE DE50312202T patent/DE50312202D1/de not_active Expired - Lifetime
- 2003-03-28 WO PCT/EP2003/003222 patent/WO2003085463A1/fr not_active Application Discontinuation
- 2003-03-28 AU AU2003226733A patent/AU2003226733A1/en not_active Abandoned
- 2003-03-28 EP EP03745770A patent/EP1493063B1/fr not_active Expired - Fee Related
- 2003-12-03 NO NO20035384A patent/NO20035384D0/no not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
EP1493063A1 (fr) | 2005-01-05 |
DE20205249U1 (de) | 2002-08-01 |
NO20035384D0 (no) | 2003-12-03 |
DE50312202D1 (de) | 2010-01-21 |
AU2003226733A1 (en) | 2003-10-20 |
WO2003085463A1 (fr) | 2003-10-16 |
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