EP1911010A1 - Verfahren und schaltungsanordnung zur gesicherten ansteuerung von aktoren, sensoren bzw. verbrauchern in einem diese enthaltenden elektrischen gerät, insbesondere elektrischen hausgerät - Google Patents
Verfahren und schaltungsanordnung zur gesicherten ansteuerung von aktoren, sensoren bzw. verbrauchern in einem diese enthaltenden elektrischen gerät, insbesondere elektrischen hausgerätInfo
- Publication number
- EP1911010A1 EP1911010A1 EP06763905A EP06763905A EP1911010A1 EP 1911010 A1 EP1911010 A1 EP 1911010A1 EP 06763905 A EP06763905 A EP 06763905A EP 06763905 A EP06763905 A EP 06763905A EP 1911010 A1 EP1911010 A1 EP 1911010A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- control device
- signal
- sensors
- consumers
- electrical
- 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
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/42—Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C25/00—Arrangements for preventing or correcting errors; Monitoring arrangements
Definitions
- Actuators sensors or consumers in an electrical device containing them, in particular electrical domestic appliance
- the invention relates to a method and a circuit arrangement for the secure control of actuators and / or sensors and / or consumers in an electric device containing them, in particular electrical domestic appliance whose actuators, sensors or consumers for their effective circuit supplied by an associated control device control signals receive.
- the known safety measure considered above can be regarded as a passive safety measure, which is implemented in the respective device, in this case in electrical washing machines by installing a corresponding safety device. Apart from the safety device concerned, no further action has been taken to ensure the required safety.
- safety circuits are also known in other contexts. Thus, it is generally known for monitoring the proper operation of electrical devices and devices (DE 40 23 700 A1, DE 197 03 890 C1, DE 197 12 375 A1, DE 199 02 031 A1) to use monitoring devices which are also used as watchdogs. Facilities or circuits are called.
- the relevant known watchdog circuits are in proper working of the circuits or Devices to which they are assigned, pulse trains supplied with certain pulse patterns. If these pulse patterns are changed due to a fault in the circuit or device with which the respective watchdog circuit is connected, the respective watchdog circuit outputs a specific output signal indicating this faulty operation.
- nothing is known about the active utilization of signals emitted by the respective watchdog circuits during the proper operation of the circuits to which they belong.
- the invention is therefore based on the object in the control of actuators and / or sensors and / or consumers at least one electrical device, in particular an electrical domestic appliance in each case to take an active safety measure to ensure a tightened functional safety of the relevant electrical appliance or household appliance.
- control device only with proper operation of the relevant electrical device additionally at least one particular characteristic having separate signal or pulse train is delivered, whose occurrence is monitored, and in that the determination of only such a separate signal or pulse sequence having the specific characteristic on the output side of the relevant control device releases the relevant actuators and / or sensors and / or consumers for recording or executing the control signals supplied to them by the control device ,
- the invention entails the advantage that the separate signal or pulse sequence having at least one specific characteristic output by the control device during proper operation of the electrical device or domestic appliance is actively evaluated and released to release the mentioned actuators and / or sensors /or Consumer of the relevant electrical device for recording or execution of these supplied by said control device control signals is used. In this way, it is possible to meet the aforementioned stricter demands on the functional safety of electrical appliances and, in particular, of domestic electrical appliances.
- the proper occurrence of the separate signal or pulse sequence having at least one specific characteristic is determined by means of a monitoring device.
- a watchdog circuit fulfilling monitoring device is used here in contrast to the initially considered known watchdog circuits active for the release of actuators, sensors or consumers of the electrical device or domestic appliance for recording or execution of these from the mentioned control device supplied control signals.
- the signal indicating this determination is fed back to the control device for evaluation.
- the functional safety of the thus operated electrical appliance or domestic appliance can be increased even more.
- it is known in communication systems see, for example, DE 198 04 307 A1, DE 198 60 756 C2, DE 102 18 668 C1
- return channel connections for the transmission of a wide variety of signals, namely for the transmission of external Measuring or counter signals or for the transmission of data signals or for the transmission of RF signals for the analysis of interfering signals in a return channel.
- this return channel connections are used in a different way than in the present invention.
- the determination of the relevant signal or pulse train by the monitoring device indicating signal in the control device is used to monitor the proper operation of the monitoring device.
- This has the advantage that it can be ascertained in a particularly simple manner whether the separate signal or pulse train having at least one specific characteristic output by the control device to the named monitoring device has actually been correctly generated and / or processed in this monitoring device is.
- a circuit arrangement is provided with a control device for the delivery of drive signals to actuators and / or sensors and / or consumers in an electrical device containing them, in particular electrical domestic appliance.
- this circuit arrangement is characterized in that at an output of the control device, at which the latter additionally emits a separate signal or pulse train having at least one specific characteristic only during proper operation of the relevant electrical device, a monitoring device is connected which only upon detection of such, the particular characteristic having separate signal or pulse sequence releases the relevant actuators, sensors or consumers for recording or execution of the control signals supplied to them by the control device.
- the monitoring device preferably contains a filter arrangement which transmits said signal or pulse sequence.
- a filter arrangement which transmits said signal or pulse sequence. This results in the advantage of a particularly simple possibility of determining the signal or pulse sequence emitted by the control device only when the electrical device or domestic appliance, to which the circuit arrangement according to the invention belongs, belongs to the control device.
- the filter arrangement in question is tuned to the particular characteristics of this signal or pulse sequence. It can preferably be formed by a high-pass or band-pass filter, which transmits only the relevant signal or pulse train.
- said filter arrangement in the monitoring device is followed by an evaluation stage.
- a continuous signal which can be drawn in for additional control purposes can be obtained when determining the separate signal or pulse train which is output by the said control device only when the said electrical device or domestic appliance is operating properly.
- the said evaluation stage is followed by a signal or pulse amplifier stage.
- a signal or pulse amplifier stage it is ensured with relatively little circuit complexity that the output signal output by said evaluation stage can be provided with a signal strength that ensures safe activation of the actuators and / or sensors or consumers.
- said evaluation stage and / or the signal or pulse amplifier stage is connected on the output side via a return channel connection to the input side of the control device.
- Fig. 1 shows schematically in a circuit diagram a fundamental
- FIG. 2 illustrates in a pulse diagram signal or pulse trains which, in the case of proper operation or disturbed operation of an electrical device connected to the circuit arrangement according to FIG.
- Household appliance are issued by a control device.
- the circuit arrangement shown in FIG. 1 contains a control device ST, which may be, for example, a microcontroller with associated software.
- This control device ST has a plurality of input-output terminals EA1, EA2, EA3, EA4. Via the input-output connections EA1 and EA2, the control device ST outputs control signals for the actuation of actuators A or consumers V;
- These actuators A and these consumers V like the control device ST, belong to an electrical device, not shown here, which may be formed in particular by an electrical domestic appliance.
- Under an electrical domestic appliance is here, for example, an electric washing machine, an electric clothes dryer, an electric dishwasher, etc. understood, ie an electrical domestic appliance, in which a secure control of this associated actuators and / or consumers is to make.
- the above-mentioned actuators A may be, for example, electrical door actuators, switching relays for electrical heating resistors, reversing relays for reversing the direction of rotation of electric motors, etc.
- the consumers V mentioned can be, for example, electrical heating resistors, electric motors, pump motors, solenoid valves, etc.
- a monitoring device is connected to the input-output connection EA3 of the control device ST shown in FIG. 1, to which a filter arrangement or a filter F belongs, which is connected on the input side to the input-output connection EA3.
- this filter arrangement F is a high-pass or bandpass filter arrangement which is only capable of transmitting a separate signal or pulse sequence having a specific characteristic.
- This separate signal or pulse sequence is the control device ST from its input-output port EA3 as a rectangular pulse train only with proper operation of the electrical appliance or domestic appliance, to which belongs the circuit arrangement shown in Fig. 1.
- the signal or pulse sequence in question is shown in the pulse diagram shown in FIG.
- N normal
- the relevant pulse sequence occurs here as a rectangular pulse sequence N only during proper operation of the electrical apparatus or domestic appliance containing the circuit arrangement shown in FIG. If, however, this operation does not proceed properly, ie if it is disturbed, the control device ST emits an undefined signal or pulse sequence or voltage from its input-output connection EA3, as shown in FIG. Fault) indicated line is indicated.
- the proper or improper operation of the electrical appliance or domestic appliance concerns here at least essential parts of the device or household appliance concerned including the control device ST or only this control device alone.
- the operation of the mentioned at least essential parts of the device is monitored by means of monitoring devices, which upon detection of an improper Operation of the relevant device parts issue an error message to the controller ST.
- This control device ST then no longer outputs the rectangular pulse sequence N shown in FIG. 2 from its input-output connection EA3, but rather the rectangular pulse sequence S.
- the control device ST emits the rectangular pulse sequence S as a result of its improper operation from its input-output connection EA3.
- its functional safety is thus taken into account in the effective activation of the actuators and / or sensors and / or bunkers of the relevant appliance or household appliance.
- the filter arrangement shown in FIG. 1 or the filter F shown there is connected on the output side to an evaluation stage AS, which merely depends on the occurrence of the pulse sequence (N in FIG. 2) corresponding to the proper operation of the electrical appliance to which the relevant circuit arrangement belongs. 2) outputs a specific output signal, in the present case an output DC voltage signal of certain height.
- Said evaluation stage AS can be realized in different ways, for example as a sample and hold circuit or as a re-triggerable monostable flip-flop or as a frequency-voltage converter. In any case, the relevant evaluation stage AS outputs the named DC output voltage signal to a pulse sequence supplied to it on the input side with a specific frequency and amplitude.
- the combination of said control signals with said output DC voltage signal corresponds in each case to an AND connection, which can be realized, for example, with a simple AND gate.
- the aforementioned filter arrangement or the filter F, the evaluation stage AS and, if appropriate, the circuit part comprising the signal and pulse amplifier ES constitute the above-mentioned monitoring device, which only determines the separate signal or pulse sequence having the abovementioned specific characteristic actuators A and consumer V and optionally provided sensors releases or unlocks. If the particular characteristic having separate signal or pulse sequence (N of FIG. 2) does not occur, but instead any other undefined signal or pulse sequence or voltage, as indicated by S in Fig. 2, then remain the relevant actuators A and consumers V shown in FIG. 1 and the optionally provided sensors for the recording or execution of the control signal supplied to them by the control device ST locked. As a result, the required secure control of the respective actuators A, consumer V or sensors is ensured.
- Output signal of the evaluation stage AS either directly or - as shown in Fig. 1 - including the signal or pulse amplifier stage ES via a return channel connection or return channel connection line RK to the input-output terminal EA4 of the control device ST is connected.
- the actuators A and the consumer V and optionally provided sensors releasing or unlocking DC output voltage of the evaluation AS and the signal or pulse amplifier stage ES is fed to the input as a read-out input terminal EA4 of the control device ST.
- the controller ST recognizes that it itself and the mentioned monitoring device works without errors in this case.
- a signal or pulse train in the form of a Facultyeckimpulsfol- ge has been delivered with a certain pulse repetition frequency and optionally with a certain amplitude.
- this pulse repetition frequency if appropriate with the specific amplitude, represents the at least one specific characteristic which the respective signal or pulse sequence has. It is of course possible to use other characteristics of a pulse train according to the invention, such as the amplitude of pulses, the mutual phase of pulses or the width of pulses, either individually or in combination with each other and / or in conjunction with the mentioned pulse repetition frequency.
- EA1 EA2, EA3, E ⁇ A4 input-output connectors
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Selective Calling Equipment (AREA)
- Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
- Control Of Electric Motors In General (AREA)
- Measuring Volume Flow (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005034911A DE102005034911A1 (de) | 2005-07-26 | 2005-07-26 | Verfahren und Schaltungsanordnung zur gesicherten Ansteuerung von Aktoren, Sensoren bzw. Verbrauchern in einem diese enthaltenden elektrischen Gerät, insbesondere elektrischen Hausgerät |
| PCT/EP2006/063605 WO2007012534A1 (de) | 2005-07-26 | 2006-06-27 | Verfahren und schaltungsanordnung zur gesicherten ansteuerung von aktoren, sensoren bzw. verbrauchern in einem diese enthaltenden elektrischen gerät, insbesondere elektrischen hausgerät |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1911010A1 true EP1911010A1 (de) | 2008-04-16 |
| EP1911010B1 EP1911010B1 (de) | 2010-12-08 |
Family
ID=37495893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06763905A Active EP1911010B1 (de) | 2005-07-26 | 2006-06-27 | Verfahren und schaltungsanordnung zur gesicherten ansteuerung von aktoren, sensoren bzw. verbrauchern in einem diese enthaltenden elektrischen gerät, insbesondere elektrischen hausgerät |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1911010B1 (de) |
| AT (1) | ATE491196T1 (de) |
| DE (2) | DE102005034911A1 (de) |
| ES (1) | ES2355422T3 (de) |
| WO (1) | WO2007012534A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006052739A1 (de) * | 2006-11-08 | 2008-05-15 | BSH Bosch und Siemens Hausgeräte GmbH | Verfahren und Schaltungsanordnung zur sicheren Ansteuerung von Aktoren, Sensoren und/oder Verbrauchern in einem diese enthaltenden elektrischen Gerät, insbesondere in einem elektrischen Hausgerät |
| DE102011078916A1 (de) * | 2011-07-11 | 2013-01-17 | Bosch-Siemens Hausgeräte Gmbh | Wäschetrockner mit einer Brandschutzvorrichtung und Verfahren zu seinem Betrieb |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4916698A (en) * | 1988-09-29 | 1990-04-10 | Allied-Signal Inc. | Failure detection mechanism for microcontroller based control system |
| US5054023A (en) * | 1989-05-12 | 1991-10-01 | Kronberg James W | "Smart" watchdog safety switch |
| US5440725A (en) * | 1989-06-24 | 1995-08-08 | Robert Bosch Gmbh | Microprocessor circuit arrangement with watchdog circuit |
| JP3633092B2 (ja) | 1996-03-18 | 2005-03-30 | 日産自動車株式会社 | マイコン故障監視装置 |
| DE19804307A1 (de) | 1998-02-04 | 1999-08-12 | Enermet Gmbh | Rundsteuerempfänger mit Rückkanal |
| DE19860756C5 (de) | 1998-10-15 | 2006-03-09 | Teles Ag Informationstechnologien | Verfahren zur Übertragung von Rückkanal-Daten in einer Verbindung zwischen einem Endgerät und einem Server eines Paketvermittlungsnetzes |
| NL1010601C2 (nl) * | 1998-11-19 | 2000-05-22 | Holec Holland Nv | Redundante veiligheidsschakelinginrichting voor het schakelen van een belasting. |
| DE10011410A1 (de) * | 2000-03-09 | 2001-09-20 | Bosch Gmbh Robert | Vorrichtung zur sicheren Signalerzeugung |
| DE10062548A1 (de) * | 2000-12-15 | 2002-06-20 | Daimler Chrysler Ag | Eletromotorischer Stellantrieb |
| DE10218668C1 (de) | 2002-04-19 | 2003-10-09 | Satelliten Und Kabelfernsehanl | Rückkanal-Analysesystem zur Analyse von Störsignalen im Rückkanal und zur Rückkanaleinstellung in CATV-Anlagen und dessen Verwendung |
| DE10259738A1 (de) * | 2002-12-19 | 2004-07-15 | BSH Bosch und Siemens Hausgeräte GmbH | Elektronisches Bauteilsystem zur Regelung eines Haushaltgeräts sowie Haushaltgerät |
-
2005
- 2005-07-26 DE DE102005034911A patent/DE102005034911A1/de not_active Withdrawn
-
2006
- 2006-06-27 EP EP06763905A patent/EP1911010B1/de active Active
- 2006-06-27 ES ES06763905T patent/ES2355422T3/es active Active
- 2006-06-27 AT AT06763905T patent/ATE491196T1/de active
- 2006-06-27 WO PCT/EP2006/063605 patent/WO2007012534A1/de not_active Ceased
- 2006-06-27 DE DE502006008476T patent/DE502006008476D1/de active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2007012534A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102005034911A1 (de) | 2007-02-01 |
| ATE491196T1 (de) | 2010-12-15 |
| EP1911010B1 (de) | 2010-12-08 |
| WO2007012534A1 (de) | 2007-02-01 |
| ES2355422T3 (es) | 2011-03-25 |
| DE502006008476D1 (de) | 2011-01-20 |
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