DE102018108973B4 - Device for operation in home automation set up for switching a switching line - Google Patents

Abstract

Device (2) for operation in a home automation system (1) set up for switching a switching line (5) and for communicating with a control center (3) by means of a wireless coupling (4), the device (2) having a first connection (51) and a second Connection (52) for switching, ie for interrupting or connecting the switching line (5) between the two connections (51, 52), the device (2) also has a resistance element (6), set up to generate a voltage difference (7) across the Resistance element (6), the device (2) having a switching element (8) with two control contacts (81, 82) and with at least two working contacts (83, 84, 85), a first working contact (83) - the at least two working contacts - is coupled to the first connection (51), wherein a second working contact (84) -the at least two working contacts- with the resistance element (6) on the one hand and the resistance element (6) on the other hand with the second connection ss (52) is coupled, the device (2) further comprising a storage element (12) which is set up to obtain an energy supply (13,14) from the voltage difference (7), ie the voltage difference (7) when a current flows through the switching line (5) between the first and second connection (51,52) via the resistance element (6), the device (2) further comprising a control element (9) which is set up to connect the control contacts (81,82) of the switching element ( 8) to provide a control voltage, the storage element (12) being set up to provide an operating voltage (10) to the control element (9) by means of the energy supply (13), the control element (9) being set up to establish the wireless coupling (4), and is further set up to receive (42) and / or send (41) transport data in accordance with a transport protocol by means of the wireless coupling, the transport data being set up to include at least one instruction and / or at least one Inf ormation, wherein an instruction is predefined and information is indefinite, the control element (9) also being set up to provide a different control voltage to the switching element (8) at the control contacts (81, 82) as a result of a received instruction.

Description

The invention relates to a device for operation in home automation, the device being set up to switch a switching line, to acquire measurement data and to communicate with a control center by means of a wireless coupling. The invention also relates to a method for operating the device. The device is intended for operation in home automation. Such home automation is initially operated with sensors that can record a wide variety of environmental parameters such as movement, wind speed / direction, temperature and much more. Furthermore, a variety of actuators can be used, for example, to open and close shutters on windows and thermostatic valves on radiators. The logic required for this is usually provided by a control center. The device shown below is primarily an actuator and optionally a sensor, according to the components of home automation mentioned.

Home automation is also known as home control ("SmartHome"). A home automation system usually has a first central unit, which is referred to here as the control center. Central units can also be provided which are hierarchically coupled to one another. Furthermore, components can be coupled to a central unit; like sensors and actuators. Such couplings can be wired, but are now usually implemented as wireless connections. The components can be set up for autonomous operation and have both the means for wireless communication and an autonomous energy supply (e.g. battery or the like). Furthermore, such components have minimal control elements; such as just a button.

The data that the sensors provide to the control center by means of wireless communication are initially referred to here as measurement data. Basically, the components communicate using so-called transport data in accordance with a transport protocol. The measurement data are therefore contained in the transport data. Furthermore, so-called instructions are contained in the transport data. It is provided that the instructions according to the transport protocol (specification) are known to the components to the extent that such instructions can cause a technical reaction on the other side. In other words, the transport protocol is a data technology interface that includes predefined instructions and can contain indefinite information. This indeterminate information includes, among other things, the measurement data, because any data can be contained in the measurement data, in terms of size and scope.

Said components can be designed to save space. From WO 2015/040 144 A1, for example, a detector is known that signals whether a window is open or closed. The detector is designed so flat that it can be arranged between the window and its frame.

Various components are known which have different functions of detectors and / or sensors. These functions can be used to detect conditions such as twilight / light, temperature, wind (strength / direction), movement, etc. Furthermore, a component can act as an actuator and, for example, operate a switch in a socket. An actuator can also be a light source that is set so that it lights up in a set color, brightness and / or with a color temperature.

The wireless communication offers the possibility of flexible choice of location when installing the components. The wireless communication can be designed for short distances (up to approx. 30 m indoors). Solutions are known which communicate by means of WLAN (IEEE 802.11). Others use DECT or ITU-T G.9959. A component can be coupled to a control center by means of communication. In other words, a network is formed in home automation.

The information and / or data provided by the components flow together in the control center. In the same, various evaluations can be carried out and scenarios can be created by means of which actuators can be operated, e.g. for operating shutters, shading, sprinkling, lighting, heating, etc. In other words, the control center provides a major part of the logic that is required for home automation will. The sensors provide input values and the actuators respond to commands.

With regard to communication, the delivery of input values and the issuing of commands, technical solutions have already been established, which are summarized here under the term of the protocol or the transmission protocol. Such protocols are called e.g. "REST-API", "ZigBee" and "Z-Wave ®". These terms are familiar to the home automation specialist. For the user of home automation, it is only noteworthy that - according to the protocol - he uses components that match his control center. The advantage of the mentioned protocols is that they specify a kind of norm or standard, so that it is only decisive for the control center that a component supports the standard or not. Central units are known which can support several standards.

On the control center side, the protocol provides an interface (API = "application interface") for adjacent software. This interface and programming tools can be used to create functions that give the control center a logical behavior. This logical behavior is usually designed in such a way that an operator is accommodated as much as possible, but he can still make or change the decisive settings himself. For this purpose, the operator is usually provided with a user interface.

With regard to the decisive settings, examples now follow. In the first case, a response to twilight should be made using a twilight sensor (sensor) and at least one roller shutter (actuator). The components are part of home automation and can be linked using the user interface. However, the question is in which twilight state (brightness) the roller shutters should close or open. Maybe it should be different in the evening and in the morning. This means that the operator is ultimately able or should be able to fine-tune here, which is important so that his needs are met. Another case involves an electrical heater that is to be controlled by means of a temperature sensor. A switchable socket could be used here. In addition to setting the switching temperatures (e.g. two due to the preferred switching hysteresis), the operator can possibly select the switching behavior, if necessary from predetermined ones. In a last case, the underground position and angle of inclination of the sun should flow into a control, which can be determined by adding the date, time and, if necessary, the location. From the examples it can be seen that threshold values play a role, but also functions that provide logic (e.g. switching hysteresis, calendar) and that can possibly access databases or interfaces on the Internet.

From the pamphlet DE 20 2007 012 141 U1 a retrofittable switching module is known that can be used for preventive burglary protection by simulating presence by switching lights on and off when no one is present. It comprises a unit for recording and storing the switching times of electrical devices and a control unit for repeating the stored data. The switching module is characterized in that all functions for recording and storing the switch-on and switch-off times of electrically operated devices with the help of a timer according to the time, day of the week and calendar week for the simulation operation from normal operation and the control unit - which in absence according to the habits of the residents The switch-on time of the devices is repeated according to the stored data according to the time and day of the week - for controlling the simulation mode in the self-sufficient switching module.

Furthermore, WO 2011/085 840 A1 discloses a remotely controllable switch with a first connection group and a second connection group, a remotely controllable control unit for generating a switching signal and a switching arrangement which can be switched between a first switching state and a second switching state by means of the switching signal. The first connection group comprises at least one connection. The second connection group comprises a first connection which, in the first switching state of the switching arrangement, is electrically connected to the connection of the first connection group. Furthermore, the second connection group comprises a second connection which, in the second switching state of the switching arrangement, is electrically connected to the connection of the first connection group. Current measuring means for generating an output signal representing the measured current are arranged in the current path of the connection of the first connection group, the switching arrangement and the second connection group. The remotely controllable control unit is set up to generate the switching signal based on the output signal of the current measuring means and a remote control signal.

The following product description / company publication is also known: Eltako GmbH: Wireless actuator universal dimmer switch FUD61 NPN-230V (Fellbach, 2016). The dimmer switch works electronically by means of a power MOSFET (300W). It seems essential that the set brightness level remains saved when the device is switched off. In the event of a power failure, the switch position and the brightness level are saved and, if necessary, it is switched on when the supply voltage is restored.

With regard to the category of actuators (e.g. switchable sockets), a wide range is already known. In the case of actuators, an established energy supply (e.g. power supply unit) can be assumed, because an actuator normally provides a service (of various types). In the case of a roller shutter, for example, an electric motor can be provided. Components that can be accommodated in conventional (surface-mounted / flush-mounted) switch boxes (diameter: 60 mm; height: 42 mm or 63 mm) are known for home automation. With such components it may be possible, for example, to switch the light in a room on or off with the help of an instruction that the control center sends to the component. The technical problem can arise that in a switch box (e.g. intended for 220 V house installation) there is only one switching line.

This means that the switch box does not have the neutral conductor and phase conductor (possibly protective conductor) at the same time, but only one of the first two. This lacks a simple prerequisite for providing a power supply that is fed by the neutral conductor and phase conductor. The fact that only a phase conductor (alternatively a neutral conductor) can be present has its cause in a simplified form of the house installation, which was very common with light switches and is still to be found today. This simplified form consists of a two-wire line that is led from the distribution box (fuse box) just below the ceiling to the room lamp. Where a switch was to be provided, a box was positioned below the ceiling, and one of the two conductors was interrupted in the box, this interruption being extended by means of the switching line to the switch in the figurative sense. As a result, current only flows through the switch if the switch is closed and a consumer is connected. The reason to interrupt the phase conductor and not the neutral conductor is that the phase should not be permanently applied to the lamp, for example.

In the situation described, in which in particular no conventional power supply unit can be operated in a switch box, it is difficult (apart from battery operation) to operate a component for home automation because such a component has, albeit low, energy requirements.

It can be seen as an object of the invention to close the gap identified in the prior art or to overcome the disadvantages of the prior art.

A device according to claim 1 and a method according to claim 14 are proposed. Embodiments of the configurations shown are presented in the dependent claims.

According to a first embodiment, a device is proposed for operation in home automation, set up for switching a switching line, for acquiring measurement data and for communicating with a control center by means of a wireless coupling. The device has a first connection and a second connection for switching, i.e. for interrupting or connecting the switching line between the two connections. Furthermore, the device has a resistance element, set up to generate a voltage difference across the resistance element. In addition, the device has a switching element with two control contacts and with at least two working contacts, wherein a first working contact - the two working contacts - is coupled to the first connection, a second working contact - the two working contacts - with the resistance element on the one hand and the resistance element on the other second port is coupled. The device also has a storage element which is set up to obtain an energy reserve from the voltage difference, i.e. the voltage difference when a current flows through the switching line between the first and second connection and in particular the voltage difference across the resistance element. In addition, the device has a control element which is set up to provide a control voltage to the control contacts of the switching element. The storage element is set up to provide an operating voltage, in particular to the control element, by means of the energy reserve. The control element is set up to establish the wireless link and furthermore set up to receive and / or send transport data in accordance with a transport protocol by means of the wireless link. The transport data are set up to transmit at least one instruction and / or at least one item of information, one instruction being predefined and one item of information being indefinite. The control element is also set up to provide the switching element at the control contacts with a different control voltage as a result of a received instruction.

In other words, the idea makes use of a voltage difference in the flow of electricity, i.e. only when the consumer is switched on, in order to be able to function as a participant ("client", sensor / actuator) in a home automation system. In the first embodiment shown, at least one switching off of the consumer succeeds. Switching on is also possible with an applied energy supply.

According to one embodiment of the device, the switching element - according to the functioning of a relay - is designed such that a connection is established or disconnected at least between the first working contact and the second working contact by means of the control voltage applied to the two control contacts.

According to one embodiment of the device, the switching element is either bistable or monostable, the bistable switching element being provided to replace a conventional switch, switch button or changeover switch between the first and second connection, the switching element correspondingly having a third working contact for replacing the changeover switch , wherein a monostable switching element is provided to replace a conventional button between the first and second connection.

According to one embodiment of the device, the same is set up for use in an electrical house installation in such a way that the first and the second connection for switching a so-called phase conductor in a 220 V AC network are set up to replace a conventional switch, switch button or changeover switch, or in such a way that the first and the second connection are used to switch a switching line for the Operating a switching relay are set up by means of low voltage, wherein the switching relay is set up to switch a circuit of the 220 V AC network.

According to one embodiment of the device, the same is set up for installation in conventional switch boxes, and in particular in those switch boxes in which there is no neutral conductor, but only the phase conductor - set up to function as a switching conductor - such switch boxes being provided for light switches / buttons .

According to one embodiment of the device, the same has an operating element on a first button, wherein the first button is electrically coupled to the control element and wherein the control element is further configured to provide the switching element with a different control voltage based on an operating action on the operating element, the operating element with a second button is mechanically coupled and the closing of the second button is provided, a voltage difference is to be formed.

According to one embodiment of the device, the different control voltage is designed in such a way that the switching element changes the connection between the two or three normally open contacts-i.e. switches-.

According to one embodiment of the device, the storage element is set up to use a physical energy store -Ultra- / Supercapacitor- to gain a first energy reserve in a first charging time, the first charging time being less than or equal to the charging time of the physical energy store.

According to one embodiment of the device, the storage element is set up to use an additional energy store to obtain a second energy reserve in a second charging time following the first charging time.

According to one embodiment of the device, the control element is set up to detect at least the first energy supply of the storage element and, if the value falls below a threshold value, to provide the switching element with the different control voltage essentially in the duration of the first charging time, so that the first energy supply can be obtained by means of the voltage difference.

According to one embodiment of the device, the same is set up to detect an event on the basis of the device going over to gain the first of the first energy supply by providing that the first charging time begins, the event being a sudden increase in the voltage difference - voltage jump -.

According to one embodiment of the device, the switching element is a relay and the relay, with regard to the wiring of the working contacts, is designed like such a conventional switch, which is provided for replacement.

According to one embodiment of the device, the switching element is implemented by means of at least one semiconductor component - field effect transistor, thyristor - and designed in such a way that it is similar or the same as that of the relay in terms of its mode of operation.

According to one embodiment of the device, the same has a fuse element which is set up to detect a critically high current flow between the first and the second connection and to interrupt the same autonomously.

According to one embodiment of the device, the device has a dimming element which is set up to set an electrical power transmitted via the switching line in multiple stages and / or continuously between a minimum power and a maximum power, the dimming element either by means of the control element and the switching element or the Control element and an additional switching element is formed, wherein the additional switching element is connected in series with the switching element.

• einen stromlosen Betrieb der Schaltleitung, dem folgend
• ein Schalten des zweiten Tasters oder des Schaltelementes in einen stromführenden Betreib der Schaltleitung
• und danach gewinnen eines Energievorrates mittels einer Spannungsdifferenz,
• wobei der Energievorrat angelegt wird, zum Betreiben eines Steuerelementes,
• wobei das Steuerelement betrieben wird
• zum Empfangen einer Anweisung sowie zum Schalten des Schaltelementes,
• wodurch das Schalten des Schaltelementes von dem stromführenden in den stromlosen Betrieb und umgekehrt aufgrund der Anweisung erfolgt.

According to a further embodiment, a method is proposed for operating or operated by means of a previously indicated device, comprising the steps:

• a currentless operation of the switching line, which follows
• switching the second pushbutton or the switching element to a current-carrying operation of the switching line
• and then gain an energy reserve by means of a voltage difference,
• where the energy supply is applied to operate a control element,
• wherein the control is operated
• to receive an instruction and to switch the switching element,
• whereby the switching of the switching element from current-carrying to currentless operation and vice versa takes place on the basis of the instruction.

According to one embodiment of the method, the energy supply is applied briefly in a first charging time and used up for several weeks to operate the control element.

According to one embodiment of the method, the energy supply is continuously checked and if the value falls below a threshold value, the switching element changes over to the current-carrying operation of the switching line for the duration of the first charging time, based on the currentless operation of the switching line.

According to one embodiment of the method, the control element transmits at least one item of information about the state of the device in the transport data either on instruction or autonomously by means of the wireless coupling.

According to one embodiment of the method, checks are carried out continuously and if the value falls below a threshold value, the control element uses the wireless coupling to transmit at least one piece of information about the state of the device in the transport data, whereupon the operator is informed that the control element must be operated.

According to one embodiment of the method, the indication includes a query as to whether an actuation should be initiated by means of the device, whereupon the control voltage is changed for a short time interval if so.

• 1 Heimautomation inkl. Vorrichtung und Zentrale
• 2 Schaltbild der Vorrichtung

The invention is explained below on the basis of exemplary embodiments and associated drawings. To do this, show:

• 1 Home automation including device and control center
• 2 Circuit diagram of the device

In the 1 is an example of home automation 1 shown with a central 3 and with a device 2 . Between the headquarters 3 and the device 2 is a wireless coupling 4th trained to send 41 and to receive 42 of transport data. The device 2 assigns a control 9 as well as a memory element 12th on. The control 9 takes over the task, initially with the headquarters 3 by means of wireless coupling 4th to communicate (sending 41 , Receive 42 ) and also the storage element 12th for energy supply 10 to use.

For this purpose, the storage element 12th a first supply of energy 13th on and possibly a second energy supply 14th . The storage element 12th is set up, at least the first energy supply 13th to put on. It can be provided that the memory element 12th by means of a data line 11 the control 9 Measurement data 11 provides. With the measurement data 11 it can be at least one state of an energy supply (13,14). Furthermore, essential information relating to the device 2 be provided (e.g. current flow). The data line 11 between the control 9 and storage element 12th is indicated as bidirectional, since data is exchanged here or the memory element is controlled 12th through the control 9 can take place. It is conceivable that the loading behavior of the storage element 12th to adjust.

Based on 2 is supposed to be the structure of the device 2 illustrated with a circuit diagram. It can be from the neutral conductor N and the phase conductor P. can be assumed. On the neutral conductor N a consumer 21 (eg lamp is connected. It is the first connection 51 and the second port 52 intended. In an initial situation, a switch would be provided between these two connections (possibly a pushbutton) for switching the consumer on or off. The device 2 is designed such a switch in a switching line 5 to replace between the first connection 51 and the second port 52 .

The function of the switch is now through the switching element 8th provided. So the switching element comes into consideration 8th If necessary, it can also be "operated remotely", which is an initial plus of the device 2 for use in home automation. For operating the switching element 8th however, an electrical source is required. Such a battery could be provided, which is not particularly convenient, for example because of the need to replace it. The storage element is the electrical source here 12th provided and in particular the first energy supply 13th .

It depends on the first supply of energy 13th to apply, including a resistance element 6th is set up above which (in the live case) a voltage difference 7th is present. It is conceivable to use a voltage difference from approx. 100 mV. By means of known, highly efficient charging circuits (so-called "energy harvesting circuits"), a voltage can be obtained that is suitable, for example a physical energy store 13th (so-called “super cap (acity)”). A few seconds (approx. 5 seconds) are sufficient for this, and times in the millisecond range are also mentioned. The physical energy storage 13th is suitable for a first supply of energy 13th to be created for a company of proposed circuit (device 2 ; esp. switching element 8th , Control 9 ) over several weeks. What is meant is the first loading time. In other words, such a physical energy store is characterized 13th (Ultracap, Supercap) with a significantly higher power density than that of a battery (around 10,000 W / kg).

A second supply of energy 14th can be designed as a conventional battery that is charged, provided that the first energy supply 13th is created. It can be provided that the memory element 12th for energy supply 10 of a control element 9 the first energy supply 13th and / or the second energy supply 14th uses. In the example, by means of the data line 11 the storage element 12th the control 9 Can provide measurement data on how high the energy supply is and, if necessary, what voltage difference 7th is applied or what current (consequently) through the resistance element 6th flows. The power consumed by the consumer 21 can thus also be recorded, which in turn enables the consumption of the consumer 21 to be recorded. The control 9 would thus be equipped with the measurement data 11 not only to use for internal purposes (control / regulation), but this measurement data 11 also to the head office 3 to ship 41. The control 9 is for this with a communication element 91 executed. The latter is set up to establish the wireless coupling, etc. In a specific embodiment, the communication element 91 a so-called "Z-Wave module". The same could alternatively be the control element 9 provide.

Regarding the operation of the device 2 first consider the situation in which the energy storage 12th , is charged in such a way that the control 9 can be operated. The control element 9 receive an instruction from the control center or react to an operator action directly on the device 2 is carried out on the control element 20 (button). In other words, as a result of the instruction and / or the operating action, the control voltage of the switching element is set 8th (in the broadest sense) changed. This is what is meant between the first control contact 81 and the second control contact 82 a voltage is applied for a short time.

This briefly affects the switching element 8th regarding the specific design. If it is a question of replacing a conventional switch in the switching line, the switching state of which is therefore stable, a bistable switching element is the ideal solution 8th (e.g. bistable relay) to be used. Changeover and changeover switches can also be replaced if, for example, a cross and / or changeover circuit is present. The bistable switching element 9 a switching voltage is thus provided for a short time, which is necessary for a change in state of the bistable switching element 9 is sufficient.

In the example three working contacts (83,84,85) are provided. To this extent, a switch and a changeover switch are shown. In the case of a cross switch, a fourth (not shown) normally open contact would be set up and relays designed accordingly.

A slightly different application is that in which so-called changeover relays are set up in the distribution box, which switch the switching line. In the actual switch box there is only a button (similar to a timer in a stairwell), which is usually operated with a low voltage ( 12th V, 24 V). Pressing the button causes the changeover relay (bistable) to change state. By means of what has been described, cross / changeover connections can be dispensed with. What matters is that in the switch box, not a switch, but a button has to be replaced. The preferred switching element to be used 8th In this way, a switching voltage is briefly made available that is sufficient for a change of state of the changeover relay.

For safety reasons, in the switching line 5 a backup 19th and / or a damping element 18th are provided. The latter is provided to compensate for current peaks.

A second button 16 can for example be set up to charge the storage element 12th to enable when fully discharged. In the said state, any electronics are ineffective. No separate control element for the second button 16 can provide a mechanical coupling 17th be set up. This mechanical coupling 17th can be of different shapes. A first possibility is a direct connection. A second possibility can be done in various stepped switching sequences (first 15 closes then 16; or first closes 16, then opens 16 and 15 closes).

The complete discharge of the storage element 12th (especially first energy supply 13th ) is a condition to be considered. Technically, the control would be 9 basically capable of activating the switching element upon detection of this state (apart from the initial start-up) 8th turn on so that the switching line 5 Current leads, etc. For safety reasons, however, it is questionable that uncontrolled current / voltage is applied to consumer 21. In this respect, it can be important that an operator at least actively participates in switching on.

It can be provided that the operator is informed that the state of the memory element 12th (especially first energy supply 13th ) is critical. This means that the state of charge (eg voltage) can be checked against a threshold value and, if necessary, the operator can receive the message that the light switch in a room must be operated. It is conceivable that the operator can use the message to activate the light switch by means of the control center 3 to effect simultaneously. As a result, the control would 9 cause the control voltage of the switching element to change in such a way that a current flows through the switching line for approx. 5 seconds. Furthermore, it is conceivable that a setting made by the operator has the consequence that the light switch is always to be actuated simultaneously.

It can be provided that predominantly semiconductor components are used. With these, for example, the switching element 8th as well as the resistance element 6th form. Switching comparatively high powers is possible with field effect transistors (FET) or thyristors. With the switching element 8th A relay can be used, and so-called semiconductor relays are also known.

Unless this already results from the context, the device is 2 intended for installation in a conventional (surface-mounted / flush-mounted) switch box. In other words, in a specific configuration, there are external terminals for the first connection ( 51 ) and for the second connection ( 52 ) are provided as well as an operating element (20). Furthermore, the object will have means for fastening (in the box) and the necessary components in a housing.

List of reference symbols

1

Home automation

2

Device (sensor / actuator)

3

Headquarters

4th

wireless pairing

41

Send transport data

42

Receive transport data

5

Switching line

51

first connection

52

second connection

P.

Phase conductor

N

Neutral conductor

6th

Resistance element

7th

Voltage difference

8th

Switching element

81

first control contact

82

second control contact

83

first working contact

84

second working contact

85

third working contact

9

Control

91

Communication element

10

Operating voltage / energy supply

11

Data line / measurement data

12th

Storage element

13th

first energy supply

14th

second energy supply

15th

first button

16

second button

17th

coupling

18th

Damping element

19th

Fuse element

Claims (19)

Device (2) for operation in home automation (1) set up for switching a switching line (5) and for communicating with a control center (3) by means of a wireless coupling (4), the device (2) having a first connection (51) and a second connection (52) for switching, ie for interrupting or connecting the switching line (5) between the two connections (51, 52), the device (2) furthermore has a resistance element (6), set up to generate a voltage difference (7) Above the resistance element (6), the device (2) having a switching element (8) with two control contacts (81, 82) and with at least two working contacts (83, 84, 85), with a first working contact (83) - the at least two Working contacts- is coupled to the first connection (51), wherein a second working contact (84) -the at least two working contacts- with the resistance element (6) on the one hand and the resistance element (6) on the other hand with the second connection connector (52) is coupled, the device (2) further comprising a storage element (12) which is set up to obtain an energy supply (13,14) from the voltage difference (7), ie the voltage difference (7) when a current flows through the switching line (5) between the first and second connection (51,52) over the resistance element (6), the device (2) further comprising a control element (9) which is set up to provide a control voltage to the control contacts (81,82) of the switching element (8), wherein the storage element (12) is set up to provide an operating voltage (10) to the control element (9) by means of the energy supply (13), the control element (9) being set up to establish the wireless coupling (4) and furthermore being set up by means of the wireless coupling to receive (42) and / or send (41) transport data in accordance with a transport protocol, the transport data being set up to transmit at least one instruction and / or at least one piece of information en, wherein an instruction is predefined and information is indefinite, wherein the control element (9) is further set up to provide a different control voltage to the switching element (8) at the control contacts (81, 82) as a result of a received instruction. Device according to Claim 1 , wherein the switching element (8) - according to the functionality of a relay - is designed in such a way that by means of the control voltage applied to the two control contacts (81, 82), a connection at least between the first working contact (83) and the second working contact (84 ) is produced or separated. Device according to Claim 1 or 2 , wherein the switching element (8) is either bistable or monostable, wherein the bistable switching element (8) is provided to replace a conventional switch, switch button or changeover switch between the first connection (51) and the second connection (52), wherein for the replacement of the changeover switch, the switching element (8) accordingly has a third working contact (85), a monostable switching element (8) being provided to replace a conventional button between the first (51) and second (52) connection. Device according to one of the Claims 1 until 3 , wherein the device (2) is set up for use in an electrical house installation such that the first (51) and the second (52) connection for switching a so-called phase conductor (P) in a 220 V AC network are set up to replace a conventional one Switch, switch button or changeover switch, or in such a way that the first (51) and second (52) connection for touching a switching line (5) are set up for actuating a switching relay by means of low voltage, the switching relay being set up a circuit of 220 V. To switch AC mains. Device according to one of the Claims 1 until 4th , wherein the device (2) is set up for installation in conventional switch boxes, and in those switch boxes in which there is no neutral conductor (N), but only the phase conductor (P) - set up to function as a switching conductor (5) - is present, with such switch boxes for light switches / buttons are provided. Device according to one of the Claims 1 until 5 , wherein the device (2) has an operating element (20) on a first button (16), wherein the first button (16) is electrically coupled to the control element (9) and wherein the control element (9) is further set up on the basis of a Operating action on the operating element (20) to provide the switching element (8) with a different control voltage, the operating element (20) being mechanically coupled to a second button (16) and the closing of the second button (16) provided, a voltage difference (7) to train. Device according to one of the Claims 1 until 6th , wherein the different control voltage is designed in such a way that the switching element (8) changes the connection between the two or three normally open contacts (83, 84, 85) -that is, switches-. Device according to one of the Claims 1 until 7th , wherein the storage element (12) is set up to gain a first energy reserve (13) in a first charging time by means of a physical energy storage device -Ultra- / Supercapacitor-, the first charging time being less than or equal to the charging time of the physical energy storage device (13). Device according to one of the Claims 1 until 8th , wherein the storage element (12) is set up to obtain a second energy supply (14) in a second charging time subsequent to the first charging time by means of an additional energy store. Device according to one of the Claims 1 until 9 , wherein the control element (9) is set up to detect at least the first energy supply (13) of the storage element (12) and, if the value falls below a threshold value, to provide the switching element (8) with the different control voltage essentially in the duration of the first charging time, so that by means of the Voltage difference (7) the first energy supply (13) can be obtained. Device according to one of the Claims 1 until 10 , wherein the switching element (8) is a relay and the relay with regard to the wiring of the working contacts is designed like such a conventional switch, which is provided for replacement. Device according to one of the Claims 1 until 11 , wherein the switching element (8) is implemented by means of at least one semiconductor component - field effect transistor, thyristor - and is designed in such a way that it resembles or resembles that of the relay in terms of its mode of operation. Device according to one of the Claims 1 until 3 , wherein the device has a fuse element (19) which is set up to detect a critically high current flow between the first (51) and the second (52) connection and to interrupt the same autonomously. Method operated by means of a device (2) according to one of the preceding claims, comprising the steps: a currentless operation of the switching line (5), which follows switching the second button (16) or the switching element (8) to a current-carrying operation of the switching line (5) and then gain an energy supply (13) by means of a voltage difference (7), wherein the energy supply (13) is applied to operate a control element (9), wherein the control element (9) is operated to receive an instruction and to switch the switching element (8), whereby the switching of the switching element (8) from the current-carrying to the currentless operation and vice versa takes place on the basis of the instruction. Procedure according to Claim 14 , the energy supply (13) being applied briefly in a first charging time and being used up over several weeks to operate the control element (9). Procedure according to Claim 14 or 15th , the energy supply (13) being continuously checked and, if the value falls below a threshold value, the switching element (8) changes over to the current-carrying operation of the switching line (5) for the duration of the first charging time, based on the currentless operation of the switching line (5). Method according to one of the Claims 14 until 16 wherein the control element (9) transmits at least one piece of information about the state of the device (2) in the transport data either on instruction or autonomously by means of the wireless coupling (4). Method according to one of the Claims 14 until 17th , the energy supply (13) being continuously checked and, if the value falls below a threshold value, the control element (9) transmits at least one piece of information about the state of the device (2) in the transport data (41, 42) by means of the wireless coupling (4), whereupon to the operator receives a message stating that the control element (20) is to be operated. Method according to one of the Claims 14 until 18th , the indication having a query as to whether actuation should be initiated by means of the device (2), whereupon, if so, the control voltage is changed for a short time interval, preferably for the first charging time.

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