EP2539912B1 - Configuration de circuit pour faire fonctionner un appareil électroménager, et procédé correspondant - Google Patents
Configuration de circuit pour faire fonctionner un appareil électroménager, et procédé correspondant Download PDFInfo
- Publication number
- EP2539912B1 EP2539912B1 EP11703180.7A EP11703180A EP2539912B1 EP 2539912 B1 EP2539912 B1 EP 2539912B1 EP 11703180 A EP11703180 A EP 11703180A EP 2539912 B1 EP2539912 B1 EP 2539912B1
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- control device
- button
- circuit arrangement
- switch
- voltage
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- 238000000034 method Methods 0.000 title claims description 27
- 238000001514 detection method Methods 0.000 claims description 57
- 230000008569 process Effects 0.000 claims description 19
- 230000000903 blocking effect Effects 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 claims 1
- 238000004146 energy storage Methods 0.000 description 10
- 239000003990 capacitor Substances 0.000 description 9
- 239000000523 sample Substances 0.000 description 8
- 239000004020 conductor Substances 0.000 description 7
- 239000004065 semiconductor Substances 0.000 description 6
- 230000007935 neutral effect Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/002—Monitoring or fail-safe circuits
Definitions
- the invention relates to a circuit arrangement for operating a household appliance. It comprises a circuit input for applying an alternating supply voltage, a control device for controlling operating processes of the domestic appliance, as well as a voltage supply unit coupled to the control device - for example a power supply - for providing a DC operating voltage for the control device, namely from the AC supply voltage.
- the circuit arrangement also comprises an operator-actuatable push-button, via which the power supply unit can be coupled to the circuit input.
- the circuit arrangement also includes an electrical switch connected in parallel with the pushbutton. This can be switched by the control device between an electrically conductive switching state in which the voltage supply unit is coupled via this switch to the circuit input, and an electrically blocking switching state.
- the invention also relates to a corresponding method for operating a domestic appliance.
- the first document describes an electronic circuit with a button, with the help of an operator can turn on the household appliance.
- a coil of an impulse relay is energized via the pushbutton, so that a power supply unit via the same relay is coupled after actuation of the pushbutton with a circuit input and thus with an electrical supply network.
- the relay can be opened by a control device again, by controlling a triac connected in parallel with the pushbutton.
- a circuit arrangement for operating a domestic appliance comprises a circuit input for applying a supply alternating voltage, a control device for controlling operating processes of the domestic appliance, a voltage supply unit coupled to the control device for providing a DC operating voltage for the control device from the AC supply voltage, a pushbutton actuatable by an operator via which the voltage supply unit can be coupled to the circuit input, and an electrical switch connected in parallel with the switch, which can be switched by the control device between an electrically conductive switching state in which the voltage supply unit is coupled to the circuit input and an electrically blocking switching state.
- the circuit arrangement comprises a state detection device coupled to the pushbutton and the control device, which detects a switching state of the button and outputs a switching state reproducing this state signal to the control device. The control device can switch the electrical switch depending on the status signal.
- a decoupling device is connected between the electrical switch and the state detecting device.
- a decoupling device can serve to at least partially decouple the state detection device electrically from the electrical switch.
- the decoupling device may preferably have a diode whose cathode is coupled to the electrical switch and whose anode is connected to the state detection device. Additionally or alternatively, the decoupling device may have an ohmic resistance.
- the functionality of the circuit arrangement in comparison with the prior art is thus improved by a separate from the power supply unit state detection device which detects the respective instantaneous switching state of the probe and outputs a status signal to the control device.
- This status signal characterizes the switching state of the button. It is further ensured by the decoupling device that - when the electrical switch is closed - the state detection device of the electrical supply network is at least partially electrically decoupled and the state signal is thus not corrupted. There are thus a clear detection of the instantaneous switching state of the button and a clear detection of an actuation of the button possible.
- the control device then receives quasi a switch-off and can bring the electrical load, as well as other components of the household appliance in a safe state and then open the electrical switch to disconnect the domestic appliance from the electrical supply network. Switching off the household appliance is thus - unlike the subject matter in the publication WO 2009/071412 A1 via the control device; the electrical switch can not be independent of the Control device to be opened. This increases the reliability of the household appliance. Namely, the control device can bring the components of the domestic appliance to a safe state or switch them off properly before it disconnects itself and the entire household appliance from the supply network.
- the state detection device can provide an electrical voltage and output to the control device.
- the electrical voltage may have at least a first property in an open switching state of the probe and at least one second property in a closed, ie actuated switching state of the probe.
- a property may be, for example, an amplitude value or a frequency value here.
- the state detection device may be coupled to an electrical contact element of the probe; then the state detection device is coupled in the closed switching state of the button to the electrical supply network, namely via the button.
- the state detection device can also be coupled to a DC voltage source, in particular to a DC voltage provided by the voltage supply unit, that is to say, for example, the DC operating voltage.
- the state detection device may include passive and / or active electronic components.
- the state detection device may comprise, for example, an ohmic resistor or a series of resistors which are connected on the one hand to an electrical contact element of the probe and on the other hand to a detection input of the control device.
- the detection input may also be coupled via a parallel connection of an ohmic resistor and a first diode to a DC voltage source.
- the cathode of the first diode may be coupled to the DC voltage source and its anode coupled to the detection input.
- the detection input may also be coupled via a parallel circuit to an ohmic resistance and a second diode to a reference potential, wherein preferably the cathode of the second diode are coupled to the detection input and its anode to the reference potential.
- a fraction of the DC voltage provided by the DC voltage source is present at the detection input of the control device in the open switching state of the button, namely, for example, two volts, three volts, four volts or five volts.
- the DC voltage of the DC voltage cases overlaps with a fraction of the AC supply voltage (mains voltage) and there is a pulsating electrical voltage at the detection input of the control device. This changes between two amplitude values, namely with the frequency of the alternating supply voltage. For example, this voltage may alternate between a first amplitude value of 2 volts and a second amplitude value of 5 volts.
- the control device can clearly and without much computational effort recognize in which switching state the button is currently located. If the property of the electrical voltage changes, this can be detected directly at the detection input of the control device and the control device can close or open the electrical switch.
- the control device After detecting an actuation of the button on the basis of the state signal, the control device can change the switching state of the electrical switch. In particular, after detecting an actuation of the button in the conductive switching state of the electrical switch, the control device can switch the same switch into the electrically blocking switching state. This makes it possible to switch off the household appliance with the aid of the button. Before the control device opens the electrical switch, it can switch off at least one electrical consumer of the household appliance properly and thus bring it into a safe state. As already stated, faulty states of components of the domestic appliance are thus avoided.
- control device opens the electrical switch after completing an operating process of the domestic appliance. It is thus possible to reduce the energy consumption of the household appliance as a whole to a minimum. The household appliance does not absorb any electrical energy after completing an operating process.
- the electrical switch is preferably a bistable relay, that is to say, for example, an impulse relay, an adhesive relay or a similar relay. So the electrical switch is preferably one Switch, which has two mechanically stable switching states. He can thus maintain the conductive or blocking switching state, namely without a continuous control by the control device.
- the electrical switch is preferably switchable by applying a pulse of current between the conductive and the blocking switching state.
- the electrical switch is a monostable relay or a semiconductor switch. In this embodiment, the electrical switch remains in its electrically conductive switching state only during the control or the energy supply from the side of the control device.
- the circuit arrangement can have an electrical energy store coupled to the electrical switch. Then, the electrical switch to maintain the conductive switching state can be supplied with electrical energy from the energy storage, namely in particular when the AC supply voltage (mains voltage) fails for a relatively short period of time.
- the electrical switch is a simple, ie monostable relay or a semiconductor switch. If the AC supply voltage and thus also the DC operating voltage for the control device fails for a relatively short period of time, the electrical switch takes up the energy stored in the energy store in order to maintain its conductive switching state.
- an energy storage also allows - especially in a monostable relay or a semiconductor switch - a safe shutdown of the household appliance in the event of a prolonged power failure and although the controller can turn off the component of the domestic appliance properly after detecting the failure of the AC supply voltage.
- the electric switch can also open, namely in particular by discharging the energy store. This can be achieved, for example, by short-circuiting the energy store to a reference potential.
- the control device can namely with electrical energy from the energy storage and / or energy from another energy storage, for example a DC link capacitor to be supplied after failure of the AC supply voltage.
- the electrical switch namely its control input - can be coupled to the power supply unit and / or with the button. Then, when the button is pressed by an operator, the electrical switch is almost automatically closed. Thus, the closing of the electrical switch is independent of the control device, the control device does not have to be "started up” so that the electrical switch is closed. The electrical switch is thus switched much faster than by means of the control device in its electrically conductive switching state.
- the control input of the electrical switch can, for example, be coupled to that output of the voltage supply unit to which the operating DC voltage for the control device or a further DC voltage is provided. Additionally or alternatively, the control input of the switch can be coupled to the button, namely in particular via a power supply.
- a power supply can have, for example, a rectifier-in particular a rectification diode-and / or at least one ohmic resistor and / or at least one capacitor.
- An inventive household appliance comprises a circuit arrangement according to the invention or a preferred embodiment of this circuit arrangement.
- a household appliance is understood to mean a device that is used for household management. This may be a large household appliance, such as a washing machine, a tumble dryer, a dishwasher, a cooking appliance, a cooker hood, a refrigerator, achengefrier combination or an air conditioner. But this can also be a small household appliance, such as a coffee machine or a food processor.
- a control device In a method according to the invention for operating a domestic appliance with a circuit arrangement, operating processes of the domestic appliance are controlled by a control device.
- An AC supply voltage is applied to a circuit input of the circuit arrangement.
- a voltage supply unit coupled to the control device is connected to the circuit input via a Button coupled.
- the voltage supply unit provides a DC operating voltage for the control device from the AC supply voltage. It is connected in parallel to the switch electrical switch between an electrically conductive switching state, in which the power supply unit is coupled to the circuit input, and an electrically blocking switching state by the control device.
- a switching state of the button is detected by means of a coupled to the button and the control device state detection device, and the switching state of the button reproducing state signal is output by the state detection device to the control device.
- the control device switches the electrical switch depending on the status signal.
- the state detection device is at least partially electrically decoupled from the electrical switch by means of a decoupling device connected between the electrical switch and the state detection device.
- An in Fig. 1 Household appliance 1 shown comprises a circuit arrangement 2.
- the circuit arrangement 2 serves to operate a household appliance 1. It comprises a control device 3, which serves to control operating processes of the domestic appliance 1.
- the controller may control the operating processes in accordance with stored operating programs.
- the control device 3 controls at least one electrical load of the domestic appliance 1.
- the control device 3 may include a microcontroller and / or a digital signal processor and / or a memory.
- the circuit arrangement 2 comprises a circuit input 4 with a first input connection 5 and a second input connection 6. Between the input connections 5, 6 an alternating supply voltage U V can be applied.
- the AC supply voltage U V is the mains voltage of an external electrical supply network.
- the circuit input 4 can be coupled to the electrical supply network, namely via a mains filter and a cable. Of the first input terminal 5 is connected to a phase conductor 7, and the second input terminal 6 is connected to a neutral conductor 8 (zero conductor).
- the circuit arrangement 2 comprises a voltage supply unit 10, which may comprise a power supply unit. It may, for example, have a switched-mode power supply and / or a capacitor power supply.
- the voltage supply unit 10 is used to provide from the AC supply voltage U V a DC operating voltage U B , namely with respect to the reference potential 9.
- the amplitude of the DC operating voltage U B may, for example, in a range from 2 volts to 9 volts. It can be for example 5 volts.
- the power supply unit 10 is connected to the neutral conductor 8.
- the voltage supply unit 10 can be coupled to the first input terminal 5, namely via an electrical switch 11.
- a decoupling device 12 is integrated in the phase conductor 7 between the electrical switch 11 and the voltage supply unit 10.
- the electrical switch 11 may be a semiconductor switch.
- the switch 11 is a relay, so for example a bistable relay or a simple monostable relay.
- the switch 11 comprises two contact elements, namely a movable contact element 13, as well as a stationary contact element 14. If the movable contact element 13 is brought into contact with the stationary contact element 14, an electrical connection between the first input connection 5 and the voltage supply unit 10 is established.
- the electrical switch 11 also includes a control part 15, which is coupled in the embodiment via a first control line 16 and a second control line 17 each having a control output of the control device 3.
- the control device 3 can control the electrical switch 11 via the control lines 16, 17.
- the circuit arrangement 2 also has a button 18, which can be actuated by an operator of the domestic appliance 1.
- the button 18 includes an operating element 19, as in the embodiment according to Fig. 1 two electrical switches 20, 21. If the operating element 19 is actuated by an operator, the switches 20, 21 are closed for the duration of the actuation. The switches 20, 21 thus remain in the closed switching state during the actuation of the operating element 19.
- the voltage supply unit 10 can be coupled to the first input terminal 5, namely via the decoupling device 12. Namely, the switch 21 is connected firstly to the first input terminal 5 and on the other hand connected via the decoupling device 12 to the power supply unit 10.
- the first input terminal 12 can be coupled to an input 22 of a state detection device 23.
- An output 24 of the state detection device 23 is connected to a detection input 25 of the control device 3.
- the state detection device 23 has the functions of detecting a switching state of the button 18. Namely, the input 22 via the switch 20 of the button 18 to the circuit input 4 can be coupled. Thus, if the button 18 is actuated, the supply AC voltage U V is applied to the input 22. The state detection device 23 converts this alternating supply voltage U V into a state signal 26 and outputs the state signal 26 to the control device 3, namely at its detection input 25.
- the state signal 26 can have different properties, for example, depending on whether the button 18 is currently actuated or not.
- the status signal 26 may have a first property, such as a first amplitude value and / or a first frequency value.
- the status signal 26 may have at least one second property, such as a second amplitude value and / or a second frequency value.
- the control device 3 can detect whether an actuation of the button 18 is present or not. If the button 18 is turned off State of the domestic appliance 1 - so when the electric switch 11 is open - operated, the control device 3 closes the electrical switch 11. This bypasses the button 18, which can be released by the operator.
- the power supply unit 10 generates the DC operating voltage U B and the domestic appliance 1 is turned on.
- the control device 3 can control the operating processes of the domestic appliance 1. After completion of an operating process, the control device 3 finds the switch 11 so that the voltage supply unit 10 is decoupled from the circuit input 4. The household appliance 1 is switched off.
- the control device 3 If the button 18 in the on state of the domestic appliance 1 - that is, when the switch 11 is closed - actuated, the control device 3 detects selbige actuation. After detecting the operation, the control device 3 brings all electrical consumers of the domestic appliance 1 in a safe state; namely the electrical consumers are switched off properly. The controller 3 then opens the electric switch 11, and the domestic appliance 1 is turned off.
- Fig. 13 an example of the state detection device 23 is shown.
- a series of resistors 27 is connected, namely, for example, a series of three ohmic resistors 27.
- the output 24 is also coupled via a parallel circuit of an ohmic resistor 28 and a diode 29 to a DC voltage source. In the example, this is the voltage supply unit 10, so that the output 24 is coupled via the said parallel circuit with the operating DC voltage U B.
- the output 24 is coupled via a parallel connection of a second diode 30 and a further ohmic resistor 31 to the reference potential 9.
- the cathode of the first diode 29 is connected to the DC voltage source and the anode of the first diode 29 to the output 24; the cathode of the second diodes 30 is connected to the output 24 and its anode to the reference potential 9.
- the state signal 26 is an electrical voltage U Z in the example.
- the voltage U Z may have the following properties: If the button 18 is not actuated, the input 22 is free of the alternating supply voltage U V. At the output 24 is a fraction of the DC operating voltage U B at. In the non-actuated state of the probe 18, the amplitude of the voltage U Z is equal to a fraction of the amplitude of the DC operating voltage U B and may for example be two volts or three volts.
- the voltage U Z is a DC voltage. in the actuated state of the probe 18, however, is applied to the input 22, the AC supply voltage U V , and a fraction of which is superimposed with the DC operating voltage U B.
- the voltage U Z thus alternates between a first and a second amplitude value, namely for example between two volts and five volts.
- the voltage U Z changes with the frequency of the supply AC voltage U V.
- the detection can be in both an open as well as closed switch 11, as at the input 22 only when the button 18 via the then closed contact element 20, a signal is applied, ie there is no repercussions on this signal when the contact element 13 is closed.
- the circuit arrangement 2 comprises an electrical energy store 32, which can be used functionally.
- the energy store 32 may comprise, for example, a capacitor which is connected between the control line 16 and the reference potential 9. So the energy storage 32 is coupled to the switch 11.
- the circuit arrangement 2 according to Fig. 2 a branching unit 33, which is connected between the energy storage 32 and the control device 3 and is additionally coupled to the voltage supply unit 10.
- the branching unit 33 can, for example, include a circuit node which connects the control device 3, the energy store 32 and the voltage supply unit 10 to one another. The branching unit 33 thus picks up the DC operating voltage U B.
- buttons 18 comprises a single switch 20, via which both the state recognition device 23 and the decoupling device 12 are coupled to the first input terminal 5 can.
- the decoupling device 12 is connected directly to the input 22 of the state recognition device 23.
- the switch 11 can be kept in the closed switching state even if the AC supply voltage U V fails. With electrical energy from the energy storage 32, the closed state of the switch 11 can be maintained for a certain period of time. This proves to be particularly helpful in a monostable relay as well as a semiconductor switch. If necessary, the control device 3 can also be supplied with electrical energy from the energy store 32, namely after a failure of the alternating supply voltage U V. But for this purpose, but also a memory can be used.
- the electrical switch 11 By tapping the operating DC voltage U B or another DC voltage through the branching unit 33, the electrical switch 11 can be moved immediately after pressing the button 18 in its electrically conductive switching state. This is then done independently of the control device 3. After pressing the button 18, the branching unit 33 accesses namely the DC operating voltage U B or the other DC voltage to the power supply unit 10 and the control part 15 of the switch 11 is energized without the need for control by the control device 3 , Thus, the switch 11 is closed much faster than without the connection to the power supply unit 10th
- the circuit arrangement 2 according to the in Fig. 2 embodiment shown can also be performed without energy storage 32 and the branching device 33.
- the control part 15 of the switch 11 is driven by the control device 3.
- the decoupling device 12 comprises a first connection 12a, which is connected to the pushbutton 18, one second terminal 12 b, which is connected to the switch 11, and a third terminal 12 c, which is connected to the power supply unit 10.
- the decoupling device 12 may comprise a diode 34 whose anode is connected to the first terminal 12a and whose cathode is connected to the terminals 12b, 12c.
- the decoupling device 12 additionally comprises a further diode 35 whose anode is connected to the second terminal 12b and whose cathode is connected to the cathode of the diode 34 and the third terminal 12c.
- the diode 34 is replaced by an ohmic resistor and / or a negative temperature coefficient (NTC) and / or a positive temperature coefficient (PTC) 36.
- NTC negative temperature coefficient
- PTC positive temperature coefficient
- the switch 11 may be a bistable relay, a simple monostable relay or a semiconductor switch.
- Fig. 3 shows a control part 15, as in the circuit 2 according to Fig. 1 can be used.
- the switch 11 is a bistable relay, ie it has two mechanically stable switching states.
- the control part 15 comprises a first coil 37 and a second coil 38.
- the first coil 37 is connected via the control line 16 to the control device 3; On the other hand, the first coil 37 is connected to the reference potential 9.
- the second coil 38 is on the one hand connected to the control device 3, namely via the second control line 17; On the other hand, it is connected to the reference potential 9.
- the switch 11 By energizing the first coil 37 with a current pulse, the switch 11 can be closed, and the movable contact element 13 comes into contact with the fixed contact element 14.
- By applying the second coil 38 with a current pulse of the switch 11 is opened.
- the electrical switch 11 is a bistable latching relay.
- the control part 15 includes a single coil 39, which is coupled on the one hand via the control line 16 to the control device 3 and on the other hand to the reference potential 9. By energizing the coil 39 with a current pulse, the switch 11 can be switched between the closed and the open switching state.
- the control part 15 includes a single coil 40.
- the switch 11 is a simple monostable relay.
- the movable contact element 13 is thus only in contact with the stationary contact element 14 when electrical current flows through the coil 40.
- the coil 40 is thus energized continuously by means of the control device 3 for maintaining the closed switching state of the switch 11.
- the control part 15 according to Fig. 6 essentially corresponds to the according Fig. 3 ,
- the switch 11 is a bistable relay with two coils 37, 38.
- the coils 37, 38 are here coupled on the one hand to the DC operating voltage U B and on the other hand in each case to the collector of an NPN bipolar transistor 41, 42.
- the respective emitters of the bipolar transistors 41, 42 are connected to the reference potentials 9.
- the base of the bipolar transistor 41 is coupled to the control device 3 via the control line 16, and the base of the bipolar transistor 42 is connected to the control device 3 via the control line 17.
- the control of the switch 11 by means of the bipolar transistors 41, 42 takes place.
- the electric switch 11 is also a bistable relay. It comprises a coil 43 which - depending on the current direction of a current pulse - attracts or pushes away the movable contact element 13.
- the coil 43 on the one hand with a Switch 44 and on the other hand connected to a switch 45.
- the switches 44, 45 can be realized as transistors.
- the coil 43 via the respective switch 44, 45 either with the reference potential 9 or with a DC voltage - for example, the DC operating voltage U B - are connected.
- the current direction can be controlled by the coil 43: If the coil 43 is coupled via the switch 45 with the DC operating voltage U B and the switch 45 to the reference potential 9, the current flows in a first direction; however, if the coil 43 is coupled via the switch 44 to the reference potential 9 and via the switch 45 to the DC operating voltage U B , then the current flows in the second direction. If the coil 43 is coupled to the reference potential 9 on both sides, then no current flows.
- the switch 11 according to Fig. 8 essentially corresponds to the according Fig. 6 in which the base of the bipolar transistor 41 responsible for closing the movable contour element 13 is coupled via an ohmic resistor 46 to a DC voltage source which supplies a DC voltage V.
- the DC voltage V can also be the DC operating voltage U B or a separate DC voltage.
- the DC voltage V is supplied by the voltage supply unit 10 (FIG. Fig. 1 and 2 ) provided. Such a design ensures that the switch 11 is automatically closed immediately after pressing the button 18, namely independently of the control device. 3
- Fig. 14 is a variation of the in Fig. 2 shown circuit arrangement 2 with a further state detection device 23 and with in Fig. 10 shown decoupling device 12 shown.
- an ohmic resistor 27 and a diode 52 are connected in series between the input 22 and the output 24. Furthermore, the output 24 is coupled via a parallel connection of a further ohmic resistor 31 to the reference potential 9.
- the cathode of the diode 52 is connected to the ohmic resistor 27 and the anode of the diode 52 to the input 22.
- the ohmic resistors 27 and 31 represent a voltage divider and are designed such that at the output 24, the state signal 26 can not exceed a permissible for the input 25 of the control unit 3 maximum voltage.
- the diode 52 serves as a "one-way" rectifier circuit, ie that the negative Half-waves of the voltage applied to the inputs 5 and 6 AC voltage U V are cut off.
- the status signal 26 is therefore always a positive electrical voltage U Z , which can be easily evaluated by the control unit 3, in particular by a microcontroller.
- this circuit arrangement has the in Fig. 10 shown decoupling device 12.
- the diode 34 of the decoupling device 12 again causes no reaction to the status signal 26 in the case of a closed contact element 13 is possible.
- the position of the switch 20 of the button 18 can be detected by the control device 3 in the case of an open and closed contact element 13.
- the voltage U Z may have the following properties: If the button 18 is not actuated, the input 22 is free of the alternating supply voltage U V. At the output 24 is no voltage. In the non-actuated state of the button 18, the voltage U Z is equal to zero. In the actuated state of the button 18, however, is applied to the input 22, the AC supply voltage U V and is rectified by the diode 52. The voltage U Z thus alternates between zero and an amplitude value, which results from the selection of the resistors 27 and 31, namely for example between zero volts and five volts. The voltage U Z changes with the frequency of the supply AC voltage U V. In such a manner, the controller 3 can reliably, unambiguously and quickly recognize whether the button 18 has been operated or not.
- the contact element 13 may, as in the preceding examples via a in the Fig. 14 not shown control part 15 are actuated, which is connected for driving the control part 15 with the control device 3 via control lines 16 and / or 17, not shown, with the control device 3.
- the power supply unit 10 is designed as a switching power supply. Therefore, a rectifier circuit 53 is provided between the contact 14 and the contact 12b. For the in Fig. 14 Other embodiments of the power supply unit 10 may be provided, then the rectifier circuit 53 may be omitted depending on the design.
- circuit arrangement 2 according to this modification can also be combined with all the control parts 15 described above.
- Fig. 9 shows an alternative embodiment of the switch 11 and a circuit for driving it.
- the switch 11 is also a bistable relay, such as a surge relay.
- the control part 15 includes a coil 47; by energizing the coil 47 with a current pulse, the switching state of the movable contact element 13 changes.
- the coil 47 is coupled on the one hand with the DC operating voltage U B or another DC voltage; on the other hand, it is connected to the collector of an NPN bipolar transistor 48.
- the emitter of the bipolar transistor 48 is connected to the reference potential 9. Its base is connected to the control input 11a of the control part 15.
- control input 11a of the switch 11 is coupled via an ohmic resistor 49 and a diode 50 to the button 18, namely, for example, with that contact element of the button 18, which is also connected to the state detection device 23.
- the anode of the diode 15 is coupled to the push button 18 and its cathode to the control input 11 a.
- the control input 11a is also coupled via a capacitor 51 to the reference potential 9.
- the diode 50, the resistor 49 and the capacitor 51 represent a total of a small capacitor power supply.
- the detection of the actuation of the button 18 with a closed contact element 13 can be done with the state detection devices 23 shown in FIG. 23 or 24.
- additional, designed for high-power operation relay can be used and although parallel to the switch 11, an additional switch - for example, a relay - are used, via which at least one electrical load the household appliance 1 is supplied with electrical energy.
- the control of the additional switch can be done in an analogous manner, as the control of the switch 11.
- Such an additional switch is then preferably designed for operation with currents up to 16 amps.
- the control device 3 may also be a plurality of microcontrollers which communicate with each other via an internal communication bus.
- a first microcontroller may be connected to the state detection device 23 - it can then recognize the instantaneous switching state of the button 18.
- a second microcontroller can be used to control the switch 11. The first and the second microcontroller can exchange data with each other via the communication bus. Both microcontrollers may be coupled to the power supply unit 10.
- a circuit arrangement 2 is provided with which a clear recognition of the actuation of the button 18 is made possible.
- the control device 3 can automatically detect whether the button 18 has been actuated by an operator in the switched-on state of the domestic appliance 1 and thus the domestic appliance 1 should be switched off safely.
- the control device 3 can also switch off the household appliance 1 automatically after completion of an operating process.
- Such an automatic switch-off is also possible after failure of the supply AC voltage U V.
- This can detect the control device 3, for example, based on a reduced amplitude of the DC operating voltage U B , when selbige voltage is provided to a capacitor of the power supply unit 10. So a safe switching off the household appliance is also possible in the case of failure of the AC supply voltage U V.
- a bistable switch 11 an already started operating process can be properly completed even after a prolonged failure of the supply AC voltage U V persists.
- the circuit arrangements described above 2 branch points.
- the AC supply voltage U V between the reference potential 9 and the contact element 14 can be tapped.
- the DC operating voltage UB can also serve to supply the consumers or the sensors of the domestic appliance 1.
- the branching points for the consumers or sensors are preferably incorporated in the circuit arrangement 2 in such a way that opening of the contact element 13 also interrupts the electrical supply of the consumers or sensors.
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- Keying Circuit Devices (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Push-Button Switches (AREA)
Claims (16)
- Agencement des circuits (2) pour faire fonctionner un appareil électroménager (1), comprenant :- une entrée de circuit (4) servant à appliquer une tension alternative d'alimentation (UV),- un dispositif de commande (3) servant à commander des processus de fonctionnement de l'appareil électroménager (1),- une unité d'alimentation en tension (10) couplée au dispositif de commande (3) et servant à fournir, à partir de la tension alternative d'alimentation (UV), une tension continue de fonctionnement (UB) pour le dispositif de commande (3),- un bouton-poussoir (18) pouvant être actionné par un utilisateur, bouton-poussoir par lequel l'unité d'alimentation en tension (10) peut être couplée à l'entrée de circuit (4), et- un interrupteur électrique (11) monté en parallèle par rapport au bouton-poussoir (18), interrupteur qui est commutable grâce au dispositif de commande (3), entre un état de commutation électroconducteur dans lequel l'unité d'alimentation en tension (10) est couplée à l'entrée de circuit (4), et un état de commutation rendant électriquement inopérant,caractérisé en ce que
l'agencement des circuits (2) comprend un dispositif de détection d'état (23) couplé au bouton-poussoir (18) et au dispositif de commande (3), dispositif de détection d'état qui est conçu dans le but de détecter un état de commutation du bouton-poussoir (18) et de fournir au dispositif de commande (3) un signal d'état (26) reproduisant l'état de commutation du bouton-poussoir (18), où le dispositif de commande (3) est conçu dans le but de commuter l'interrupteur électrique (11) en fonction du signal d'état (26), et en ce que l'agencement des circuits (2) comprend un dispositif de découplage (12) monté entre l'interrupteur électrique (11) et le dispositif de détection d'état (23), dispositif de découplage qui est conçu dans le but de découpler électriquement le dispositif de détection d'état (23), au moins partiellement de l'interrupteur électrique (11). - Agencement des circuits (2) selon la revendication 1, caractérisé en ce que le dispositif de détection d'état (23) présente un redresseur, en particulier une diode (52), redresseur qui est connecté au bouton-poussoir (18) et à un diviseur de tension, et en ce que le signal d'état (26) peut être capté au niveau du diviseur de tension.
- Agencement des circuits (2) selon la revendication 1, caractérisé en ce que le dispositif de détection d'état (23) présente un agencement des circuits dans lequel au moins une résistance (27) est placée entre une entrée (22) et une sortie (24) du dispositif de détection d'état (23) dans lequel la sortie (24) est couplée à une source de tension continue, par un circuit monté en parallèle se composant d'une autre résistance (28) et d'une diode (29), et dans lequel la sortie (24) est couplée au potentiel de référence (9) de l'agencement des circuits (2), par un circuit monté en parallèle se composant d'une deuxième diode (30) et d'une autre résistance (31).
- Agencement des circuits (2) selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le dispositif de découplage (12) présente une résistance ohmique (36) et/ou une première diode (34) dont la cathode est couplée à l'interrupteur électrique (11) et dont l'anode est couplée au dispositif de détection d'état (23).
- Agencement des circuits (2) selon la revendication 4, caractérisé en ce que le dispositif de découplage (12) présente une deuxième diode (35) dont l'anode est connectée à l'interrupteur (11) et dont la cathode est connectée à la cathode de la première diode (34) et à l'unité d'alimentation en tension (10).
- Agencement des circuits (2) selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de détection d'état (23) est conçu dans le but de fournir au dispositif de commande (3) une tension électrique (UZ) servant de signal d'état (26), tension électrique qui, dans un état de commutation ouvert du bouton-poussoir (18), présente au moins une première propriété et, dans un état de commutation fermé du bouton-poussoir (18), présente au moins une deuxième propriété.
- Agencement des circuits (2) selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de commande (3) est conçu dans le but de changer l'état de commutation de l'interrupteur électrique (11) après identification d'un actionnement du bouton-poussoir (18) à l'aide du signal d'état (26), en particulier après identification d'un actionnement du bouton-poussoir (18) dans l'état de commutation conducteur de l'interrupteur électrique (11), de commuter ce même interrupteur (11) dans l'état de commutation rendant électriquement inopérant.
- Agencement des circuits (2) selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de commande (3) est conçu dans le but de commuter l'interrupteur électrique (11) dans l'état de commutation rendant électriquement inopérant, après achèvement d'un processus de fonctionnement de l'appareil électroménager (1).
- Agencement des circuits (2) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'interrupteur électrique (11) est un relais bistable.
- Agencement des circuits (2) selon la revendication 9, caractérisé en ce que le relais bistable présente deux bobines (37, 38), où les bobines (37, 38) sont couplées d'une part à une tension continue de fonctionnement (UB) de l'unité d'alimentation en tension (10) et, d'autre part, respectivement couplées au collecteur d'un transistor bipolaire NPN (41, 42) dont les émetteurs respectifs sont connectés au potentiel de référence (9) de l'agencement des circuits (2), et en ce que la base respective des transistors bipolaires NPN (41) est couplée au dispositif de commande (3), par des conduites de commande (16).
- Agencement des circuits (2) selon la revendication 10, caractérisé en ce que la base du transistor bipolaire (41) assurant la fermeture de l'interrupteur (11) est couplée, par une résistance ohmique (46), à une source de tension continue qui fournit une tension continue V quand le bouton-poussoir (18) est actionné.
- Agencement des circuits (2) selon la revendication 11, caractérisé en ce que le relais bistable comprend une bobine (43) qui, en fonction du sens du courant d'une impulsion de courant, ouvre ou ferme l'interrupteur (11), et qui est connectée à un premier interrupteur (44) et à un deuxième interrupteur (45), où un côté de la bobine (43) et l'autre côté de la bobine (43) sont connectés, respectivement par le premier interrupteur (44) et par le deuxième interrupteur (45), à une tension continue (V) ou à un potentiel de référence (9), et en ce que le premier et le second interrupteurs (44, 45) peuvent être sélectionnés par des conduites de signaux (16, 17) qui sont raccordées au dispositif de commande (3).
- Agencement des circuits (2) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'agencement des circuits (2) présente un accumulateur d'énergie électrique (32) couplé à une entrée de commande (11 a, 11 b) de l'interrupteur électrique (11), et l'interrupteur électrique (11) peut être alimenté en énergie électrique provenant de l'accumulateur d'énergie (32), pour le maintien de l'état de commutation conducteur.
- Agencement des circuits (2) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une entrée de commande (11 a, 11 b) de l'interrupteur électrique (11) est couplée à l'unité d'alimentation en tension (10) et/ou au bouton-poussoir (18), de sorte que lors de l'actionnement du bouton-poussoir (18) par l'utilisateur, l'interrupteur électrique (11) est commutable, passant de l'état de commutation rendant électriquement inopérant, à l'état de commutation électroconducteur.
- Appareil électroménager (1) ayant un agencement des circuits (2) selon l'une quelconque des revendications précédentes.
- Procédé pour faire fonctionner un appareil électroménager (1) ayant un agencement des circuits (2), où des processus de fonctionnement de l'appareil électroménager (1) sont commandés par un dispositif de commande (3), ledit procédé comprenant les étapes consistant à :- appliquer une tension alternative d'alimentation (UV) à une entrée de circuit (4) de l'agencement des circuits (2),- coupler à l'entrée de circuit (4), par un bouton-poussoir (18), une unité d'alimentation en tension (10) couplée au dispositif de commande (3),- fournir une tension continue de fonctionnement (UB) pour le dispositif de commande (3), à partir de la tension alternative d'alimentation (UV) fournie par l'unité d'alimentation en tension (10), et- commuter, grâce au dispositif de commande (3), un interrupteur électrique (11) monté en parallèle par rapport au bouton-poussoir (18), entre un état de commutation électroconducteur dans lequel l'unité d'alimentation en tension (10) est couplée à l'entrée de circuit (4), et un état de commutation rendant électriquement inopérant,caractérisé
en ce qu'un état de commutation du bouton-poussoir (18) est détecté au moyen d'un dispositif de détection d'état (23) couplé au bouton-poussoir (18) et au dispositif de commande (3), en ce qu'un signal d'état (26) reproduisant l'état de commutation du bouton-poussoir (18) est fourni au dispositif de commande (3), où le dispositif de commande (3) commute l'interrupteur électrique (11) en fonction du signal d'état (26), et en ce que le dispositif de détection d'état (23) est découplé électriquement au moins partiellement de l'interrupteur électrique (11), au moyen d'un dispositif de découplage (12) monté entre l'interrupteur électrique (11) et le dispositif de détection d'état (23).
Priority Applications (1)
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PL11703180T PL2539912T3 (pl) | 2010-02-24 | 2011-02-02 | Układ połączeń do obsługi sprzętu domowego i odpowiedni sposób do tego |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102010002277A DE102010002277A1 (de) | 2010-02-24 | 2010-02-24 | Schaltungsanordnung zum Betreiben eines Hausgerätes und entsprechendes Verfahren |
PCT/EP2011/051433 WO2011104073A1 (fr) | 2010-02-24 | 2011-02-02 | Configuration de circuit pour faire fonctionner un appareil électroménager, et procédé correspondant |
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EP2539912A1 EP2539912A1 (fr) | 2013-01-02 |
EP2539912B1 true EP2539912B1 (fr) | 2014-12-31 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP11703180.7A Active EP2539912B1 (fr) | 2010-02-24 | 2011-02-02 | Configuration de circuit pour faire fonctionner un appareil électroménager, et procédé correspondant |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP2539912B1 (fr) |
CN (1) | CN102770934B (fr) |
DE (1) | DE102010002277A1 (fr) |
EA (1) | EA022259B1 (fr) |
PL (1) | PL2539912T3 (fr) |
WO (1) | WO2011104073A1 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102709116B (zh) * | 2012-06-28 | 2014-10-29 | 西安润辉科技发展有限公司 | 低压交流控制回路中交流接触器及控制方法 |
CN103280380B (zh) * | 2013-06-18 | 2015-06-17 | 西安润辉科技发展有限公司 | 交流接触器智能电源控制系统 |
DE102015219490A1 (de) * | 2015-10-08 | 2017-04-13 | BSH Hausgeräte GmbH | Matrixschaltung für eine Anzeigevorrichtung eines Haushaltsgerätes, Anzeigevorrichtung sowie Haushaltsgerät |
CN111380156B (zh) * | 2020-03-19 | 2021-11-23 | 海信(山东)空调有限公司 | 控制电路、控制芯片和空气调节系统 |
CN113534696A (zh) * | 2021-06-16 | 2021-10-22 | 广东盈科电子有限公司 | 用于电器的倾倒检测装置及控制方法 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
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CN87208790U (zh) * | 1987-06-07 | 1988-09-21 | 国营万众机器厂 | 一种全自动洗衣机电脑控制器 |
US4866955A (en) * | 1988-07-21 | 1989-09-19 | Maytag Corporation | Appliance control circuit |
DE19517861C1 (de) * | 1995-05-16 | 1996-05-23 | Miele & Cie | Netzbetriebenes Elektrogerät |
US6551414B2 (en) * | 2001-01-19 | 2003-04-22 | U.S. Chemical Corporation | Automatic system and method for removing mineral deposits from a dishwasher |
DE102007058379A1 (de) | 2007-12-05 | 2009-06-10 | BSH Bosch und Siemens Hausgeräte GmbH | Schaltungsanordnung zum Betreiben eines Hausgeräts |
DE102007058380A1 (de) | 2007-12-05 | 2009-06-10 | BSH Bosch und Siemens Hausgeräte GmbH | Schaltungsanordnung zum Betreiben eines Hausgeräts |
WO2010076233A1 (fr) * | 2008-12-30 | 2010-07-08 | Arcelik Anonim Sirketi | Appareil électroménager à gestion de sécurité renforcée |
-
2010
- 2010-02-24 DE DE102010002277A patent/DE102010002277A1/de not_active Withdrawn
-
2011
- 2011-02-02 EP EP11703180.7A patent/EP2539912B1/fr active Active
- 2011-02-02 EA EA201290762A patent/EA022259B1/ru not_active IP Right Cessation
- 2011-02-02 CN CN201180010787.4A patent/CN102770934B/zh active Active
- 2011-02-02 PL PL11703180T patent/PL2539912T3/pl unknown
- 2011-02-02 WO PCT/EP2011/051433 patent/WO2011104073A1/fr active Application Filing
Also Published As
Publication number | Publication date |
---|---|
DE102010002277A1 (de) | 2011-08-25 |
EA201290762A1 (ru) | 2013-04-30 |
CN102770934A (zh) | 2012-11-07 |
CN102770934B (zh) | 2016-03-30 |
PL2539912T3 (pl) | 2015-07-31 |
EP2539912A1 (fr) | 2013-01-02 |
EA022259B1 (ru) | 2015-11-30 |
WO2011104073A1 (fr) | 2011-09-01 |
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