EP1493063A1 - Elektromotorische antriebsanordnung mit erstfehlersicherheitssystem - Google Patents
Elektromotorische antriebsanordnung mit erstfehlersicherheitssystemInfo
- Publication number
- EP1493063A1 EP1493063A1 EP03745770A EP03745770A EP1493063A1 EP 1493063 A1 EP1493063 A1 EP 1493063A1 EP 03745770 A EP03745770 A EP 03745770A EP 03745770 A EP03745770 A EP 03745770A EP 1493063 A1 EP1493063 A1 EP 1493063A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drive arrangement
- arrangement according
- electromotive drive
- switching elements
- control
- 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
Links
- 238000012544 monitoring process Methods 0.000 claims abstract description 28
- 238000012360 testing method Methods 0.000 claims abstract description 17
- 238000012806 monitoring device Methods 0.000 claims abstract description 3
- 230000004913 activation Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 230000000474 nursing effect Effects 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011022 operating instruction Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000004092 self-diagnosis Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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 electric motor drive arrangement with a first-fault safety system for furniture, in particular for hospital and care beds, consisting of a power supply, at least one motor, a power switching unit, at least one manual control, a control box and a control with a monitoring block.
- DE 19715642 shows a manual control with different sensors that react to properties of the operator and can only execute functions of the drive when the operator is using the manual control.
- a disadvantage of the known arrangements is that sometimes only individual components are designed to be fail-safe, but not the overall system.
- 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, and at the same time has further advantages and incorporates new empirical values.
- This object is achieved according to the invention in that when a first error occurs, the monitoring block takes suitable measures to prevent the drive arrangement from moving on its own, executes corresponding error messages and transmits signals to higher-level monitoring devices, triggers emergency calls, if necessary, and has a test device for the error reporting and error detection system.
- the electromotive drive arrangement according to the invention with a 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 are monitored by means of suitable sensors, advantageously in the entire system and not only on one or a few system components. These parameters are temperature, humidity, current, voltage drop, etc.
- the sensors pass on their signals to the monitoring block via an input / output block.
- the controls are also equipped with sensors and connected to the input / output block.
- Safety switches such as Emergency stop switching elements are also provided.
- the monitoring block influences not only the switching on and off of the drive motors but also, for example, the switching off of the entire power supply via a controllable mains switch; in a further embodiment, the activation of a non-reversible safety element is also possible, so that the drive is completely shut down becomes.
- the monitoring block signals error states or readiness for operation via the input / output block.
- a particularly advantageous embodiment automatically triggers a higher-level alarm and, for example, fire fighting in the event of special errors which pose great security risks. This is possible, for example, if additional environmental sensors for smoke, fire, etc. are integrated in the first-fault safety system.
- the possibility of monitoring and evaluating the first-fault safety system according to the invention by higher-level safety control personnel or performing remote maintenance is particularly advantageous. This is made possible simply by means of advantageous connections via the input / output block to local, regional and national networks.
- test facility of the fault reporting system of the first-fault safety system corresponding to the relevant applicable standard is integrated and can be activated either automatically internally or, for example, from a safety control room from the outside, as well as by regularly triggering an actuating element, for example a test button.
- This test button is either arranged in the manual control and / or control box or connected separately.
- Optical displays of the operating and error states as well as acoustic signaling means are provided and controlled via the input / output block.
- a history of error frequencies can be stored and called up in a display and / or made available at a connection for, for example, a higher-level security guard or a maintenance computer.
- a minimal configuration of the electromotive drive arrangement with a first-fault safety system is also proposed, in which the switching elements of the drive motors are formed by manual operation and a control box.
- the motor currents are switched directly in the manual control and control box, there is no need to control the switching elements of the motors by the control.
- the hand control and control box consist of first fail-safe components, such as positively driven switching elements adapted to the motor currents.
- the monitoring block switches off the entire power supply or triggers suitable fuse elements.
- An electromotive drive arrangement with a first-fault safety system is thus advantageously adapted to the environment and the boundary conditions, including integration into existing higher-level safety systems.
- Fig. 1 is a block diagram of the furniture drive according to the invention.
- Fig. 2 shows a further block diagram of the furniture drive according to the invention.
- FIG. 1 shows 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 connection 39.
- a power supply 10, for example a transformer with rectification and Sieving, is via a switching device 9, for example a power switch, which can also be configured in a particularly advantageous manner to be remotely controllable, connected to the electrical power network.
- the power supply 10 provides a fuse element 12 and a power switching unit 17 to the two motors 19, 20 of the drive 18 for high-power electrical energy.
- An additional auxiliary supply 11, for example an accumulator, is also 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 assigned to 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 or opened and closed by a control block 3 of a control unit 1 via control lines 40, 41.
- the switching elements 14 and the motor switching elements 15, 16 can also be designed as positively driven safety relays.
- the motor supply lines each have a securing 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, which exchange data with one another bidirectionally, which is represented by two arrows.
- a hand control 5 and a control box 6 are connected to the input / output block 4, via which the motors 19, 20 of the drive 18 can be adjusted, for example by pressing a button on the hand control 5 or the control box 6 via the monitoring block 2 to the Control block 3 and then passed to the power switching unit 17.
- Manual control 5 and control box 6 are fail-safe units.
- connection 36 is connected to an emergency call and connection 37 to a fire alarm / fighting system, a wireless call / alarm system, for example an integrated radio transmitter, also being able to be used for this.
- a wireless call / alarm system for example an integrated radio transmitter, also being able to be used for this.
- the monitoring sensors are placed at locations that can form potential danger spots based on experience.
- the power switching unit is also monitored using known methods, which determine whether there is contact sticking in the relays used.
- the switching device 9 with which the entire device can be disconnected from the mains with two poles, offers a further security.
- Such a switching device for the auxiliary supply 11 is also conceivable, but not shown.
- the power supply to the control unit is advantageously carried out separately, but can also be connected to the power supply 10.
- control devices such as manual control 5 and control box 6 can already be equipped with sensors on the manufacturing side, which with suitable means z. B. are connected to the input / output block 8 via the respective connecting cables 42, 43.
- At least one emergency stop button 7 is connected to the input / output block 4, which can be actuated immediately by the operator or the supervisory staff in the event of a danger.
- At least one actuating element 8, 8 1 is provided, which is arranged either in the manual control 5, in the control box 6 or separately.
- the monitoring block 2 is hereby regularly checked for function by activating a test device 47 in accordance with the operating instructions; a message is issued when the test is successful via an optical test detector 33, for example a signal lamp and / or via the acoustic detector 31 this is indicated by the optical error detector 32 and / or the acoustic detector 31.
- the execution of the regular test is forwarded to higher-level monitoring units for recording via the connections 34, 35; a further report in the form of an alarm signal via the connections 36, 37 is carried out only to a limited extent by checking the signal line.
- the monitoring block 2 can also be checked automatically if, for example, it is stored in the program of a microprocessor control. A higher-level check via the connections 34, 35 is also conceivable.
- 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 has electromechanical switching elements 49, for example in the form of rotary and / or toggle switches.
- the electromechanical switching elements 48, 49 are fail-safe, for example positively driven switching elements, suitable for switching high motor currents, which in this case are passed directly through the manual control 5 and control box 6.
- the monitoring unit 2 switches the power supply off directly, for example via the switching device 9 and / or by destroying / switching off the fuses 12, 13 (not shown).
- the environment can restrict or expand the components.
- an electric motor drive arrangement with a first-fault safety system is realized, which not only enables interventions in the control system, but also enables comprehensive, advantageous protection with integration into higher-level local and regional safety 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
Description
Claims
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 (de) | 2002-04-05 | 2003-03-28 | Elektromotorische antriebsanordnung mit erstfehlersicherheitssystem |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1493063A1 true EP1493063A1 (de) | 2005-01-05 |
| EP1493063B1 EP1493063B1 (de) | 2009-12-09 |
Family
ID=7969678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03745770A Expired - Lifetime EP1493063B1 (de) | 2002-04-05 | 2003-03-28 | Elektromotorische antriebsanordnung mit erstfehlersicherheitssystem |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1493063B1 (de) |
| AU (1) | AU2003226733A1 (de) |
| DE (2) | DE20205249U1 (de) |
| NO (1) | NO20035384D0 (de) |
| WO (1) | WO2003085463A1 (de) |
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, 32278 Kirchlengern | 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/de not_active Ceased
- 2003-03-28 EP EP03745770A patent/EP1493063B1/de not_active Expired - Lifetime
- 2003-03-28 AU AU2003226733A patent/AU2003226733A1/en not_active Abandoned
- 2003-12-03 NO NO20035384A patent/NO20035384D0/no not_active Application Discontinuation
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03085463A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| NO20035384D0 (no) | 2003-12-03 |
| DE20205249U1 (de) | 2002-08-01 |
| EP1493063B1 (de) | 2009-12-09 |
| WO2003085463A1 (de) | 2003-10-16 |
| DE50312202D1 (de) | 2010-01-21 |
| AU2003226733A1 (en) | 2003-10-20 |
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