DE102018108009A1 - Electronic input / output device for signal, data and / or energy transmission with galvanic isolation - Google Patents

Abstract

The invention relates to an electronic input / output device for signal, data and / or energy transmission with electrical isolation (115, 115 ', 115 "). The device has at least a first functional unit (117) and a second functional unit (118) wherein the first functional unit (117) is installed in a first sub-housing (104) and the second functional unit (118) is installed in a second sub-housing (105), wherein the two sub-housings (104), (105) are mechanically interconnectable and form an electromagnetic field coupling region (123) at a common interface (122).

Description

The invention relates to an electronic input / output device of the signal, data and / or energy transmission with galvanic isolation.

As examples of such generic input / output devices isolation amplifiers can be used, which are known to provide a galvanic isolation of multiple circuits and / or can connect different AC voltage levels, with planar transformers are often used in a particular form for energy transmission.

Planar transformers, for example, also called planar transformers, are used, inter alia, for the galvanic isolation of circuits, wherein a planar transformer is a special feature of a transformer, which is characterized by its particularly flat design.

Planar transformers can have a height in the millimeter range and are preferably used in electrical modules or electrical appliances that are designed to be particularly compact in terms of their geometric dimensions. In this context, planar transformers can transmit energy, signals and / or data as part of an input / output device designed as an isolating amplifier. Due to the transformer characteristic also circuits with different AC voltage levels can be interconnected.

An isolating amplifier for transmitting energy in one embodiment of a planar transformer is described, for example, in US Pat DE 10 2015 108 911 A1 described in more detail.

In conventional isolation amplifiers, typically two or three galvanically isolated potential groups are housed within a housing and internally, i. in the interior of the housing by means of galvanically separating coupling elements, such as transformers or transformers, optocouplers, etc. interconnected. Here, the structure of the isolation amplifier is very rigid and hardly changeable.

It is an object of the present invention to increase the versatility, in particular the modularity of such generic input / output devices.

This object is achieved with an electronic input / output device with electrical isolation according to the features of claim 1 and with a functional unit according to the features of claim 10. Preferred or expedient embodiments and developments are subject of the dependent claims.

The invention accordingly proposes an electronic input / output device with galvanic isolation. The input / output device has at least a first functional unit and a second functional unit, wherein the first functional unit is installed in a first partial housing and the second functional unit is installed in a second partial housing, wherein the two partial housing expediently form housing modules which are mechanically connected to one another and in the mechanically interconnected state form a coupling region for electromagnetic fields at a common interface.

The use of sub-housings makes a modularity of the electronic input / output device with galvanic isolation possible. This can therefore be built up flexibly and, as a result, can also be used and adapted to given operating conditions and requirements.

Under modularity, also called modular principle, the division of a whole into parts, which are referred to as modules, defined in the context of the invention. In the case of a modularized or modular construction of a whole, this whole can consequently be composed of modules and thus of standardized parts, the modules interacting with one another via corresponding interfaces and / or being assembled along defined locations.

A functional unit is understood in this context to mean a unit which operates at a predetermined electrical potential. For example, a functional unit has a single potential group or even a single circuit of the input / output device, in particular an isolation amplifier.

The functional units are therefore arranged galvanically separated from each other. The sub-housings can be mechanically connected to form an overall housing. It is also possible that the sub-housings are enclosed by a common additional housing.

Accordingly, an electronic input / output device, in particular for providing an isolating amplifier, is provided, which ensures electrical isolation by using at least two sub-housings, each with at least one functional unit installed therein. Advantages due to the galvanic separation of the functional units installed in separate sub-housings are, for example, safety aspects in the operation of the electronic input / output unit. Output device, eg an isolation amplifier. Furthermore, ground loops can be avoided by galvanic isolation.

Electronic input / output devices designed eg as isolating amplifiers are often dimensioned for industrial applications. In this case, for example, sensors connected to the isolating amplifiers can also be used in potentially explosive areas. Therefore, the isolating amplifiers used for this purpose according to relevant standards, eg according to Standard DIN EN 60079-11 , executed and dimensioned. When dimensioning, apart from various safety aspects, special requirements for the insulation properties can be relevant, which can be broken down into clearances and creepage distances as well as solid insulation. This is in the context of the invention for the dimensioning and geometric design of planar transformers and isolation amplifiers the Standard DIN EN 60079-11 , in particular in the version valid at the filing date.

In an advantageous embodiment of the inventive electronic input / output device electrical energy between the functional units with an inductive coupling device is transferable.

An inductive coupling unit can connect the two functional units in an electrical and / or magnetic manner. In this case, for example, electrical energy can be transmitted between the functional units via plates and / or coils as inductive coupling elements.

Furthermore, it can be provided in one exemplary embodiment that data and / or signals can also be transmitted via the radio link between the two sub-housings.

A radio link may be provided by a transmitter and a receiver. Depending on the data or signal flow direction, the sub-housings are equipped with a transmitter and / or a receiver. Thus, both sub-housings can each have a transmitter and a receiver for bidirectional data and / or signal transmission. For a unidirectional data and / or signal transmission suffice a transmitter and a receiver whose installation site determine the direction of the radio link. For data and / or signal transmission between the sub-housings antennas, coils and / or capacitors can be provided. A radio link has the advantage that a galvanic separation of the two sub-housing is possible in a simple manner.

In a further embodiment of the electronic input / output device according to the invention can be provided that the two sub-housings have a common contact geometry.

A common contact geometry is to be understood as an area in which the first sub-housing comes into mechanical contact with the second sub-housing. The contact geometry is advantageously designed so that the two sub-housings are mechanically connected to each other and advantageously also again easily separable without the contact geometry is mechanically destroyed. For example, as a contact geometry, a latching connection can be used which is easily connectable and then also detachable again. Thus, it is possible to use the sub-housing for different configurations of the electronic input / output device according to the invention or to reuse it for other configurations. A modular design of the electronic input / output device according to the invention is thus possible.

In a preferred embodiment it can be provided that the common contact geometry comprises magnetically conductive material for controlling an electro-magnetic field.

By magnetically conductive material, such as ferrites, the magnetic field can be influenced or guided at the contact geometry. In this way, the magnetic field can be passed from a part of the housing to an adjacent housing part largely without stray field. Ferrites can be provided, for example, as a ferrite foil or as a ferrite plate.

Furthermore, it can advantageously be provided that the common contact geometry is step-shaped.

A step-shaped contact geometry or at least a partially stepped contact geometry can, on the one hand, establish a secure mechanical contact, since, for example, the contact surface is enlarged by the shaping of the step. Further, a step is a means to fix elements, for example, parts of a potential group.

In a further embodiment it can be provided that one of the sub-housings houses an input module, an output module and / or a supply module of the electronic input / output device.

Thus, an electronic input / output device according to the invention is used, for example, as a buffer amplifier to galvanically sensor signals prepare and transfer separately. In particular, an inventive electronic input / output device used as a buffer amplifier consequently transmits energy, signals and / or data in practical implementation.

An electronic input / output device provides a galvanic isolation between different areas or functional units, for example between the three areas input module / output module / supply module or IN / OUT / POWER, wherein the three areas can also be understood as potential groups.

Accordingly, a sub-housing for different functions can be configured. Multiple sub-enclosures having at least one functional unit installed therein may collectively provide an overall function of the electronic input / output device.

Furthermore, it can preferably be provided that each sub-housing is made of an electrically non-conductive material.

An electrically non-conductive material may be an insulating material. Accordingly, the sub-housing may be made of an electrically insulating material, for example of a plastic material, which ensures a galvanic separation between the functional units.

In a further embodiment it can be provided that a plurality of input modules is connected to one of the sub-housings.

Additionally or alternatively, it may be provided in one embodiment that a plurality of output modules is connected to one of the sub-housings.

Such a sub-housing in such a case, suitably represents a central base housing having a plurality of connection possibilities for input modules and / or for output modules, i. for connecting at least two further input modules as input module and / or at least two further functional modules designed as output module. This increases the connection options and the modularity of the electronic input / output device.

It is therefore proposed to integrate the individual galvanically separated areas of electronic input / output devices, in particular of isolation amplifiers, into individual housing parts or sub-housings and to combine these in a flexible manner. Thus, an electronic input / output device according to the invention, e.g. a buffer amplifier, expedient for each relevant potential group own housing or is composed at least of two different sub-housings.

In a further preferred embodiment of the invention, the electronic input / output device has an error message contact for monitoring a mechanical contact between the sub-housings.

An error reporting contact may be electronically configured to monitor a contact force between the two mated sub-housings. If the contact force is low or missing, this is a signal that the electronic input / output device is not yet ready for operation.

• 1 ein erstes Ausführungsbeispiel eines als modularer Trennverstärker einsetzbaren elektronisches Ein-/Ausgangsgeräts nach der Erfindung in Prinzipskizze mit drei Koppelbereichen gemäß der Erfindung;
• 2 ein zweites Ausführungsbeispiel eines als Trennverstärker einsetzbaren elektronisches Ein-/Ausgangsgeräts nach der Erfindung in Prinzipskizze mit zwei Koppelbereichen gemäß der Erfindung;
• 3 ein Ausführungsbeispiel eines Trennverstärkers gemäß Stand der Technik, mit Bauteilen in der Draufsicht;
• 4 ein Ausführungsbeispiel des Trennverstärkers der 3 mit dargestellten Leiterbahnen;
• 5 ein Ausführungsbeispiel einer Kontaktgeometrie eines z.B. als Trennverstärker einsetzbaren elektronisches Ein-/Ausgangsgeräts nach der Erfindung in Prinzipskizze;
• 6 ein Ausführungsbeispiel einer als I/O-Modul (Ein-/Ausgabe-Modul) innerhalb eines elektronisches Ein-/Ausgangsgeräts einsetzbaren Funktionseinheit nach der Erfindung in Prinzipskizze;
• 7 ein detailliertere Ansicht eines Teils des Inneren der Funktionseinheit gemäß 6 in Prinzipskizze;
• 8 eine detailliertere Ansicht des Teils der Funktionseinheit gemäß 7 von der Rückseite in;
• 9 ein weiteres Ausführungsbeispiel eines Teilgehäuses mit Funktionseinheit in Prinzipskizze;
• 10 eine weitere beispielhafte Ausführung elektronisches Ein-/Ausgangsgeräts nach der Erfindung in Prinzip skizze;
• 11 im Querschnitt ein weiteres Ausführungsbeispiel einer Kontaktgeometrie;
• 12 ein weiteres Ausführungsbeispiel eines elektronisches Ein-/Ausgangsgeräts nach der Erfindung in Prinzipskizze;
• 13 ein weiteres Ausführungsbeispiel eines elektronisches Ein-/Ausgangsgeräts nach der Erfindung in Prinzip skizze; und
• 14 im Querschnitt ein weiteres Ausführungsbeispiel einer Kontaktgeometrie.

Some embodiments of the invention are shown purely schematically in the drawings and will be described in more detail below. Hereby show:

• 1 a first embodiment of a usable as a modular isolating amplifier electronic input / output device according to the invention in a schematic diagram with three coupling regions according to the invention;
• 2 a second embodiment of an insertable as a buffer amplifier electronic input / output device according to the invention in a schematic diagram with two coupling regions according to the invention;
• 3 an embodiment of a buffer amplifier according to the prior art, with components in plan view;
• 4 an embodiment of the isolation amplifier of 3 with illustrated tracks;
• 5 an embodiment of a contact geometry of an example used as a buffer amplifier electronic input / output device according to the invention in a schematic diagram;
• 6 an embodiment of an insertable as an I / O module (input / output module) within an electronic input / output device functional unit according to the invention in a schematic diagram;
• 7 a more detailed view of a portion of the interior of the functional unit according to 6 in outline sketch;
• 8th a more detailed view of the part of the functional unit according to 7 from the back in;
• 9 a further embodiment of a part housing with functional unit in a schematic diagram;
• 10 another exemplary embodiment electronic input / output device according to the invention in principle sketch;
• 11 in cross-section, another embodiment of a contact geometry;
• 12 a further embodiment of an electronic input / output device according to the invention in a schematic diagram;
• 13 a further embodiment of an electronic input / output device according to the invention in principle sketch; and
• 14 in cross-section, another embodiment of a contact geometry.

The 3 and 4 show an embodiment of an isolation amplifier 100 with a 3-way separation according to the prior art. In a so-called 3-way separation, three galvanically separated areas are connected to each other, for example with two transformers, for example, an energy transformer or transformer and a signal transformer.

3 and 4 each show in a plan view of details of the isolation amplifier 100 , where different levels of the isolation amplifier 100 are shown. 3 shows components of the isolation amplifier 100 , in particular a single circuit board 110 of the isolation amplifier 100 with components arranged thereon, and 4 shows traces of the isolation amplifier 100 , in particular conductor tracks of an outer layer on this printed circuit board.

An isolation amplifier with a 3-way isolation, such as the isolation amplifier 100 , Usually has three galvanically separated areas as functional units, each functional unit forms its own potential group. Examples of such functional units and thus the respective potential groups in three galvanically separated areas in 3 and in 4 shown. The 3 and 4 show a first functional unit 101 , a second functional unit 102 and a third functional unit 103 on. Here is the first functional unit 101 eg an input unit 107 , the second functional unit 102 eg an output unit 108 and the third functional unit 103 eg a supply unit 109 to the electrical power supply of the isolation amplifier 100 ,

In the plan view of 3 are electronic components on the circuit board 110 shown. Between the respective potential groups of the functional units 101 . 102 . 103 can transmit energy and signals via coupling elements 111 and 112 be transmitted. In the example after the 3 and 4 transmits the isolation amplifier 100 Energy from the supply side (see 103, 3 ; 109 . 4 ) to the entry side (see 101, 3 ; 107 . 4 ) and to the exit side (see 101, 3 ; 108 . 4 ). For this purpose, the isolation amplifier 100 eg a coupling element 112 ( 3 ) for transmitting electrical energy. The coupling element 112 is designed in this embodiment as an inductive coupling element. A capacitive or inductive component as a coupling element 111 , which is implemented as an integrated circuit, further transmits signals from the input unit 107 to the output unit 108 and, if desired, vice versa. In conventional isolation amplifiers, such as the isolation amplifier 100 according to 3 and 4 However, a user must therefore rely on the fact that within the device, the galvanic isolation, in particular safe electrical isolation, the respective circuits or potential groups is given and required isolation distances, eg. As creepage distances or solid insulation, be complied with, since he usually can not see the inside.

Starting from the isolation amplifier 100 of the 3 and 4 demonstrate 1 and 2 schematically possible embodiments of an example, used as a buffer amplifier, electronic input / output device 115 respectively. 115 ' according to the invention.

So are according to 1 individual functional units arranged in several, at least two sub-housings, eg according to 1 in three separate sub-housings 104 . 105 . 106 arranged closer in 1 are shown. By definition, within the scope of the invention, a sub-housing with a harbored functional unit or even a plurality of functional units housed forms a functional module. Consequently, according to 1 individual functional units, eg a first, in the context of the invention, for example, as an input module formed functional unit 117 , a second, for example in the context of the invention designed as an output module functional unit 118 and a third, in the context of the invention, for example, as a utility module trained functional unit 119 in departure of the at 3 and 4 shown functional units 101 . 102 and 103 now arranged according to the invention for galvanic separation from each other in a plurality, at least two sub-housings, for example according to 1 in three separate sub-housings 104 . 105 . 106 arranged closer in 1 are shown.

The three according to 1 thus functional units designed as functional modules 117 . 118 . 119 define galvanically isolated circuits or potential groups between those isolation distances, eg. As creepage distances or creepage distances or solid insulation, be complied with by additional walls of sub-housings 104 . 105 . 106 available. In this way, for example, as a buffer amplifier within the scope of the invention, in particular modularly composed electronic input / output device in a simpler manner intrinsically safe, in particular in the sense of the standard DIN EN 60079-11 , in particular in the version valid at the filing date.

Consequently, then as in the 3 and 4 shown single circuit board 110 in the context of the invention and consequently also in the present embodiment of the invention 1 no longer given, but divided into several parts and thus has, for example, three individual, for reasons of clarity not shown on printed circuit boards. Each of the (not shown) printed circuit boards is present in a separate sub-housing 104 . 105 . 106 arranged as in 1 is shown in more detail.

1 shows a first embodiment of, for example, an isolating amplifier providing electronic input / output device 115 according to the invention, with three sub-housings 104 . 105 . 106 , As already mentioned, the individual, eg three sub-housings form galvanically separated regions, eg a supply module 119 , an input module 117 and an output module 118 , which come in three different housings as a sub-housing 104 . 105 . 106 are housed. at 1 includes each part housing 104 . 105 . 106 an electronics (not shown) with a potential group. The three sub-housings 104 . 105 . 106 are mechanically interconnected by mechanical fasteners. at 1 for example, those through the outside of the sub-housings 104 . 105 . 106 arranged and these interconnecting fasteners 121 indicated. A mechanical connection can z. B. by grid connections. These connections are purely mechanical, but not electrical or galvanic. Since such mechanical connections are well known to the person skilled in the art in a variety of ways, compounds which can be used within the scope of the invention are not shown and described in further detail. So between the individual sub-housings 104 . 105 . 106 Nevertheless, energy, signals and / or data can be exchanged are coupling areas 123 at each common interfaces 120 between the individual sub-housings 104 and 105 . 105 and 106 and 104 and 106 intended.

The coupling areas 123 are structurally and electrically configured such that by means of electromagnetic fields energy, signals and / or data between the individual sub-housings 104 . 105 . 106 and in consequence can also be exchanged between the individual function modules defined by the sub-housings. Insulation requirements between the individual potential groups within different sub-housings 104 . 105 . 106 are inherently fulfilled by these measures and are therefore directly visible to the user.

In the present embodiment in 1 the galvanic isolation is now directly visible. By having multiple sub-housings 104 . 105 . 106 are mechanically interconnected, but have no electrical contacts, it is easy for the user to recognize that a galvanic isolation is present. As a result of the flexibility and, in particular, modularity of the electronic input / output device according to the invention as a result, the respective specific function, eg that of an isolating amplifier, is only with the assembly of several sub-housings 104 . 105 . 106 vervollständig.

The design and development of functional units provided with individual sub-housings 117 . 118 . 119 Accordingly, the function modules can be carried out in such a way that no malfunctions can arise if the function modules 117 . 118 . 119 not or only insufficiently mechanically connected to each other. The functionality of the modular, eg as isolating amplifier, assembled electronic input / output device 115 According to the invention will advantageously be unlocked only when the housing parts and thus the individual function modules are correctly connected. Expediently, the respective boundary surfaces with the coupling regions provided there are then aligned exactly in a predetermined manner relative to one another. This can be ensured by suitable measures, such as, for example, by latching connections whose engagement is expediently visible or audible. Furthermore, mechanisms for continuous contact monitoring can be provided, so that even in industrial installation environment with, for example, vibrating parts at any time a secure contact between the sub-housings can be monitored.

It results from the use of sub-housings 104 . 105 . 106 numerous advantages. In addition to the described "visibility" of the galvanic separation offers by the separation of the housing parts an advantageous "modularity". So z. B. different industrial standard signals, such as 0-10 V, 4-20 mA, in a simple manner by different input modules and / or output modules can be realized, so for example in a further modification 1 also the same input module with one output module for an output current of 4-20 mA to be supplied or another output module with voltage range of 0-10 V. During installation, the desired functionality can then be assembled on site as desired. It may be useful to use the same output modules, for example, with a digital output signal, and thereon different input modules for different sensors be connected. Another form of modularity is z. B. different supply modules 119 comprehensive sub-housing 106 for different input voltages, eg. B. 12 V DC, 24 V DC, 230 V AC, to connect to the same input and output modules. In the supply modules 119 are then depending on the variant different power supplies.

Furthermore, different types of configuration, e.g. Parameterization by means of DIP (dual in-line package) switches or by near field communication (NFC) simply by different sub-modules and thus with different sub-housings and housed therein functional units can be realized. Also, it is thus e.g. Possible to add fault signaling contacts optionally for the individual housing parts.

In various embodiments, the sub-modules can also be pre-assembled before use and before delivery. Alternatively, the sub-housing are joined together at the installation site, in particular put together.

Between individual potential groups and thus also between individual sub-housings energy and / or signals and / or data are exchanged. One possibility of such exchange across individual sub-housings is to use electromagnetic fields that can be used between the insulating walls of the individual housings in a coupling region for the transmission of energy and signals. However, it is helpful to make the housing parts made of electrically non-conductive material, otherwise there could be an unwanted shielding of fields. In other words, metal housing for the inventive housing of functional units are not recommended, but rather plastic housing.

For the signal transmission between sub-housings, there are numerous possibilities of coupling elements, such. As the use of antennas, coils, capacitors or the like. The ranges are usually not critical. Because often you have in data transmission in such systems small distances and therefore sufficient or even more range than necessary, especially if antennas are used.

For the energy transfer is advantageous to use inductive coupling elements, since high efficiencies can be achieved here at low geometric distances. Furthermore, the required magnetic fields between the sub-housings of external influences remain unaffected, such as plastics, dirt, dust, liquids. This is particularly advantageous for industrial applications. Thus, preferably, the energy transfer between the individual housing parts is particularly suitably based on inductive energy transfer.

The embodiment of 1 has three functional units with a total of three sub-housings 104 . 104 . 105 on. It is also possible to implement an input / output device according to the invention with only two functional modules. In such a case, the modular isolating amplifier has two instead of three housing parts as a partial housing.

Other embodiments within the scope of the invention with more than three functional units or potential groups are possible. This is the case, for example, with a buffer amplifier as a signal doubler. Here, the signal doubler from an input signal can produce two identical or similar output signals at two outputs, with the modules supply / input / output 1 / Exit 2 ,

Furthermore, there are applications for an electronic input / output device according to the invention, in which the evaluation of a plurality of sensor signals is to be summarized. Here, for example, so-called system cabling or gateways are available, an example being the so-called Termination Carrier.

It is also also possible to form a plurality of functional units as a module with a common sub-housing.

This shows 2 a further embodiment of a modular composite electronic input / output device 115 ' according to the invention. This can also be used eg for system cabling or as a gateway.

Here, e.g. aspired to bundle and collect multiple signals. In the previously known embodiments, for example, the system cabling is effected by galvanic contacts. Many subcomponents have a redundant structure in this design. This redundancy concerns, for example, power supplies that have a DC / DC converter in each functional unit. The solution now proposed suggests, e.g. for gateways and system cabling to combine the same circuit parts and build only one or a few times.

This shows 2 an example of a system cabling in which one or more functional units designed as input module (s) 117 to a designed as a central base housing part housing 130 can be plugged. As a basic housing, a part housing is defined in the context of the invention, which has a plurality of Connection options for input modules and / or output modules.

For this purpose, the input and / or output modules or their sub-housing expedient each in the manner of a function card 131 , ie be formed like a card to flat next to each other or even behind each other with respective sub-housings as narrow functional modules, ie, for example, with respective sub-housings 132 as narrow input modules to a wider base housing 130 to be connected.

In the embodiment according to 2 has the base housing 130 Furthermore, a further special embodiment of a sub-housing therein, as in this already several different functional units, eg in the manner of an output unit 118 and a supply unit 119 are pre-installed. Thus, the base housing takes 130 additionally two different functional units in a common housing.

The base housing 130 according to 2 now has a variety of connection options for input modules, for reasons of clarity, only such an input module with one with a sub-housing 132 housed input unit 117 is shown. Depending on the design, such a sub-housing 132 but also several combined into a module input units 117 include. Furthermore, coupling areas 123 , for coupling magnetic fields between the base housing 130 and a respective sub-housing 132 provided, in particular data and / or signals but expediently energy between the housings 130 . 132 and thus according to 3 in particular between the respective functional units 117 and 118 such as 117 and 119 exchange. Energy becomes expedient in particular between the respective functional units 119 and 117 such as 119 and 118 transfer. Between the functional units 118 and 119 that work together in the base housing 130 can be accommodated, also coupling elements, similar to the coupling element 111 or 112 according to 3 , be provided for the transmission of signals, in particular, when the functional units 118 and 119 are arranged on a common circuit board.

The base housing 130 has a power supply, for example 24 V, and one or more outputs at the output unit 118 on. A respective sub-housing 132 for one or more input units 117 is mechanically attached to the base housing and fixed (not shown for reasons of clarity), in which case no electrical or galvanic contact is formed.

In the embodiment of the 2 Consequently, several modules, in particular each card-like or as function cards 131 , according to 2 as input cards, are formed to the base module 130 be connected. The input modules can thus, for example, flat next to each other with respective sub-housings 132 as narrow input modules to a wider base housing 130 be connected. Furthermore, such a formation of function cards can be provided not only in the case of input cards but also analog for output modules. In such a case, in contrast to 2 Consequently, several, in particular each card-like, combined to output modules output units can be connected to a common base housing.

With the provision of multiple connections for modules can be from an electronic input / output device to the base housing 130 according to 2 For example, the function of a termination carrier or gateway can be adopted. For example, sensor signals of all input cards 131 in the base housing 130 be collected as a central unit and be forwarded from there via another digital interface to a higher-level control system. This forwarding can be wired or as a radio connection.

A similar, somewhat modified embodiment is exemplary in FIG 12 shown. There integrated with a 130 'designated base housing a supply unit and has for this purpose supply terminals for a power supply, for example, 24V. In addition, the base housing integrated in the illustrated example, at least one output unit and has for this an outwardly guided, as a wired or wireless connection running interface, in particular a digital interface, in particular as an Ethernet interface, for example in the form of an RJ45 socket and / or a WLAN terminal will.

Further, according to the embodiment of 12 for example, six functional units designed as respective input modules 117 ' with respective separate sub-housings to the base module 130 ' connected. Each sub-housing of each input module 117 ' in the illustrated example further includes an input interface, eg a digital input interface " DI "For digital input signals.

Based on an embodiment according to 12 Thus, an electronic input / output device according to the invention can be designed as a collection unit and several, eg six digital input signals by means of the input modules 117 ' "Collect" and forward eg via an Ethernet interface. Expediently, a mechanical fastening device (not shown in detail) is additionally formed on the base housing, for example for attachment to a mounting rail 200 , Such an input / output device constructed as a collection unit according to the invention can, in turn, be used in its entirety as a "collection module" for further application.

13 1 shows an inventive embodiment of an electronic input / output device according to the invention, in which a base housing labeled with 130 "integrates a supply unit and, in turn, has supply terminals for a power supply, for example 24 V. In an expedient manner, at least one not further shown in the base housing Logic and / or control unit integrated, so with the in 13 illustrated embodiment, for example, a small control is feasible. The integrated in the base housing functional units thus act together as the base module. Also, on the base housing 130 ' in turn, a mechanical fastening device not shown, for example, for attachment to a mounting rail 200 ,

Furthermore, by definition, on the base housing 130 ' a plurality of input modules and a plurality of output modules to be connected. For the sake of clarity is included 13 however, only one functional unit designed as an input module 117 ' and a functional unit formed as an output module 118 ' shown. Depending on the design, in this case also the input modules can be identical in each case and / or the output modules can be constructed identically. In the example shown, such an input module has, for example, an analog input interface "AI" for analog input signals, and such an output module has, for example, a digital output interface "DO" for digital output signals. For example, a sensor, for example a brightness sensor, can be connected to such an analog input interface "AI" and / or voltage signals from 0 to 10V can be detected via the input interface "AI", for example. The in the base housing 130 ' according to 13 integrated logic and / or control unit linked depending on the application any input modules 117 ' or their inputs with output modules 118 ' or their outputs. For example, an output over the outlined output interface "DO", if an input, eg via the outlined input interface "AI", exceeds a set signal threshold (eg 6.5V).

As in the embodiments according to 12 and 13 Furthermore, it can be seen that the input modules and / or output modules are expediently designed in card-like fashion, so that they are connected in a simple manner, side by side or one behind the other, as narrower functional modules relative to the base housing to the base housing which is wider in relation to the input modules and / or output modules to be able to. The connection possibilities on the base housing for the multiplicity of input modules and / or output modules can in this case expediently be formed slit-like in each case toward the outside.

In summary and based on previously described embodiments, input modules and / or output modules can thus be equipped with interfaces for analogue and / or digital signal / data forwarding, depending on the design. Furthermore, an electronic input / output device according to the invention further comprises at least one functional module, ie one or more together in a separate sub-housing functional unit (s), ie in particular input and / or output units, which its electrical supply voltage via a coupling region (see. especially 1 and 2 , Reference number 123 ) receives electromagnetic fields at a common interface between its own sub-housing and another functional module or its sub-housing.

In the following, in particular, these coupling regions and, for this purpose, particularly expedient contact geometries will be dealt with in each case as part housings which can be mechanically interconnected.

5 shows an embodiment of a comparison with the embodiments of the 1 and 2 modified, even more useful contact geometry 140 to form a coupling region using the example of another, for example, modular as a buffer amplifier assembled, electronic input / output device 115 ' according to the invention, wherein the coupling region at a common interface of two sub-housings 141 . 142 is formed in sectional view. This becomes an interface 120 with a coupling region between the two sub-housings 141 . 142 provided. Like the 1 and 2 Here are the two sub-housing 141 . 142 expedient again made of plastic and mechanically connected or fixed. The sub-housings 141 and 142 overlap, however, in an overlap area. In the overlapping region, which, as shown, may be expediently stepped, the individual partial housings have 141 . 142 for example, only about half of their original height, so that a step surface is formed on eg half of the original height, which is bounded by preferably perpendicular thereto guided side walls of the sub-housing. Here, the step surface is expedient parallel to the outside of the contact geometry 140 formed coupling region extending part housings 141 . 142 , In the 5 exemplary dimensions are given in millimeters, which form the step geometry. Furthermore, as outlined, it can be provided that in each case at least one sub-housing 141 and or 142 in two parts, for example, with a first part as a lid and a second part as a bottom, is executed, with the lid and bottom preferably on the contact geometry 140 connected to each other and / or the contact geometry 140 by a part of the first and / or second part of one or both partial housings 141 . 142 is predetermined. Each of the two sub-housings 141 and 142 encloses, as in the embodiments according to 1 and 2 , Further, at least one printed circuit board 143 respectively. 144 , on each of which various electronic components are arranged to form a functional unit.

In the embodiment of 5 Now there is an inductive coupling in the predetermined by the overlap region coupling region. This is for example with the circuit board 143 and 144 , on each of which the electronic components are arranged to form a functional unit, in each case a further printed circuit board 145 respectively. 146 electrically and mechanically connected, which, for example, each via the formation of a contact point 149 for the common electrical and mechanical connection, as is known to those skilled in the art, can take place. These other circuit boards 145 and 146 are in particular according to the contact geometry 140 on the circuit boards 143 and, 144 are arranged and each extend into the overlapping area. There are the circuit boards 145 and 146 each equipped with coupling elements, in the present example for inductive coupling, for example with at least one coil, which are not shown for reasons of clarity, however. The on or in the circuit boards 145 and 146 located coupling elements are arranged such that one or more on or in the circuit board 145 located (s) coupling element (s) with one or more coupling element (s) of the circuit board 146 magnetically with each other via an electromagnetic field 147 or magnetic field is coupled or are, as by the of the circuit board 146 to the circuit board 145 extending three arrows indicated. By using different circuit boards to form a functional unit and to carry coupling elements they can also be designed differently depending on the requirements. The circuit boards 143 . 144 to which the circuit boards 145 . 146 can be electrically and mechanically connected to the coupling elements, for example, multi-layered, z. B. be of the type of 8-layer PCB (printed circuit board PCB). The electrically and mechanically connected to this and extending into the overlap area printed circuit boards 145 and 146 with the coupling elements may have a different structure and expediently have a lot of copper and / or many conductor windings for a high conductivity. The on or in the circuit boards 145 and 146 located coupling elements are formed in the case of coils, for example, as planar coils, for example as planar coils of a planar transformer.

The magnetic field 147 can also be made by magnetically conductive materials 148 , such as ferrites, are so influenced or guided that the coupling between on or in the circuit boards 145 and 146 located coupling elements improved and electromagnetic fields are better shielded in the outer space. For example, such magnetically conductive, but in particular electrically poor or non-conductive materials 148 , For example, ferrites, especially in the form of films at each of the interface 120 remote outer sides of the circuit boards 145 and 146 be attached or a local outer layer of the circuit board 145 respectively. 146 form. By means of the magnetic field 147 can thus not only signals and / or data via inductive coupling but it can in particular also energy or power from one to the other housing part through the sub-housing 141 . 142 be transmitted through. The sub-housings 141 . 142 are preferably plastic housing for improved transmission of the magnetic field. Depending on the design, it is possible to achieve efficiencies for the transmission of more than 80% and, depending on the power and dimensioning, even efficiencies of over 90%. In addition to the transmission of energy, ie in addition or as an alternative, data and / or signals can also be transmitted by means of magnetic fields, as stated above.

In the 5 illustrated contact geometry 140 with a coupling region is just one example of a variety of possible contact geometries. Other geometries are also possible in a simple manner, for example, which do not have a stepped shape and / or have, for example as a mechanical connecting element, a latching device for fastening the two partial housings 141 . 142 together. Furthermore, it is possible that in the contact geometry 140 a monitoring is integrated to check whether the sub-housings are properly connected. However, such monitoring is not shown for reasons of clarity.

Further, for example, rod ferrites with wound coils and / or shell cores can also be used for the inductive coupling. Furthermore, ultimately any geometric shape can be used that allows a good mechanical connection between the housing parts and also provides a good magnetic connection or coupling. In this case, it is desirable to dimension the coupled coupling elements, ie in particular coils or planar coils and magnetic materials, in such a way that the best possible transformer with an air gap can be formed whose losses are minimal and the coupling becomes maximum.

6 shows in a sketch-like representation of another illustrative example of a trained in particular as an input module functional unit 117 '' , From the outside on the relevant sub-housing, so that the components, in particular the electronic components including. With these electrically connected coupling elements for the formation of electromagnetic fields inside the housing are not visible.

However, one can see in particular a partial housing of the housed functional unit 117 '' protruding housing part 133 , By means of such or similar designed housing part 133 can therefore together with a to the housing part 133 complementarily formed partial housing one with the housed functional unit 117 '' A contact geometry with overlapping area to be mechanically connected to each other, to be connected, similar to the description above. For mechanical connection, for example, on the lateral sides of the housing part 133 fasteners 121 be arranged, for example, groove-like depressions in which complementary nose-like elevations can intervene. In the interior of the housing part 133 Thus, a coupling element or more coupling elements expedient, in turn, a printed circuit board with a coupling element or more coupling elements according to the above description, arranged to work together with a arranged inside a complementarily shaped housing part coupling element or even a plurality of coupling elements, appropriately again similar to the above description on or in a printed circuit board arranged to form an electromagnetic coupling region at the joint surface resulting from mechanical connection.

As described above, the design and / or arrangement of coupling elements for the transmission of energy, data and / or signals by means of electro-magnetic fields can be provided differently depending on the specific embodiment. at 6 It is indicated in this regard that in this illustrative example, for example, a design and arrangement of coupling elements may be contained in the housing interior, with which a bidirectional transmission of data and a unidirectional transmission of energy to power the housed functional unit 117 '' can be enabled.

Furthermore, as with 6 indicated, externally accessible terminals 150 at the housed functional unit 117 '" be provided, which are so electrically connected to the housing components arranged inside the electronic components, for example, that on this example, a sensor, in particular for detecting temperature, speed or pressure, can be connected. Also, on the housing surface with the electronics arranged inside the housing according to a respective specific embodiment electrically connected visualization means 160 , such as LEDs, to be provided for displaying certain events.

7 shows equally in sketchy representation of a partial view in a housing interior of a like 6 Illustrated illustrative example of a housed functional unit 117 '" in at least partially "glasses" sketched sub-housing. 8th shows in comparison to 7 a corresponding view from the back of the housed functional unit 117 '' ,

In particular, a printed circuit board which is arranged inside the housing and is labeled with 143 ', on which, depending on the design, corresponding electronic components (not shown for reasons of clarity) are arranged to form a respective functional unit, can be seen in particular. Furthermore, one is inside the protruding housing part 133 arranged circuit board 145 ' for coupling elements and two on the Leiterplatter 145 ' arranged coupling elements 151 and 152 ( 7 ), which are designed in an expedient embodiment as coils to see. The electromagnetic coupling surface provided here in or for the coupling region thus comprises two, in accordance with FIG 7 juxtaposed coupling elements. It should be noted at this point, however, that depending on the design, only one coupling element for forming an electromagnetic coupling surface can be provided. Alternatively or additionally, however, can also be a coupling element or can also have a plurality of coupling elements in the interior of the circuit board 145 ' be arranged. The coupling element 151 according to 7 For example, it is designed, arranged and electrically connected to the further electronic components, to enable the transmission of data, in particular bidirectionally, and the coupling element 152 , the transmission of energy, in particular for the power supply of the housed functional unit 117 ''' to allow, if with mechanical connection of the housed functional unit 117 ''' With your further housed functional unit, as described above, an electromagnetic coupling region is formed at the joint interface formed during mechanical connection. At this interface, the coupling surfaces to be coupled together or the coupling elements are thus expediently toward each other directed. In embodiments with a housing part projecting in this case, in which interior the coupling surfaces are formed, as in the case described above 5 . 6 . 7 and 8th Thus, an overlap area is thus additionally formed, similar to the example above also with respect to FIG 5 highlighted.

The circuit board 145 ' is therefore also in particular corresponding to a respective contact geometry on the circuit board 143 ' arranged and electrically connected to this 149 ' ( 8th ), for example, as already related to 5 executed. However, it should again be noted that in a modification to this, a common circuit board for coupling elements and electronic components can be provided.

Also, on the back of the case 7 sketched circuit board 145 ' in turn, suitably a magnetically conductive, but in particular also electrically poor or non-conductive, material layer or foil be arranged for field shielding, as in 8th sketched by way of example and with reference numerals 148 ' Mistake.

The 9 shows an exemplary embodiment of a housing part 133 with provided therein coupling elements according to 6 to 8th complementarily formed functional module part housing 132 ' , To a like 9 sketched part housing 132 ' However, in the example shown, two, with housing parts 133 provided functional modules are connected. In order to complete a respective contact geometry with overlap region, according to the exemplary embodiment 9 , one to a projecting housing part 133 complementary indentation or recess 134 in the sub-housing 132 ' intended. For mechanical connection, for example, on the lateral inner sides of the indentations or recesses 134 fasteners 121 be arranged, for example, nose-like elevations, which in complementary groove-like depressions on housing parts 133 can intervene.

A functional module according to 9 sketched functional module part housing 132 ' Therefore, suitably has at least one supply unit, with which on the on a circuit board 146 ' In the region of the recess arranged energy coupling elements two other connected function modules can be supplied with energy, ie in particular, for example, an input module and an output module. In each case at least one further signal and / or data coupling element arranged in the region of the recess can then be used to transpose signals and / or data by means of electromagnetic fields, bridging these and the respective sub-housings. The coupling elements are in the sketched embodiment on or in a circuit board 146 ' arranged, which in addition the electronic components to form the functional module with the sub-housing 132 ' wearing. The circuit board 146 ' In this example, therefore, a common circuit board for both these electronic components and for the coupling elements. As you can see further, it is optional on the back of the circuit board 146 ' , ie, on a side facing away from the mechanical interface with one or two further sub-housings and forming a coupling region side of the printed circuit board 146 ' , expedient again a Schirmungsschicht or plate 148 ' provided of magnetically conductive material.

10 shows a sketch of another exemplary embodiment of an electronic input / output device according to the invention comprising a functional module with sub-housing 132 ' assembled and mechanically connected to a trained as an input module, housed functional unit 117 '' and a trained as output module, housed functional unit 118 '' , As indicated, between the functional modules these mechanically interconnecting fasteners 121 be arranged. The functional module with partial housing 132 ' can, for example, the, according to 9 correspond and trained as an input module, encased functional unit 117 ''' one according to in relation to the 6 to 8th described. At the functional unit 117 '' Consequently, on the input side, ie on the feeding side, a current input can be connected to a sensor which, in particular, can also be located in an Ex zone (potentially explosive zone) due to the galvanic separation according to the invention. The functional unit 117 ''' forms in such a case thus the "ex-side" of a trained as an isolating amplifier input / output device. The trained as output module, encased functional unit 118 '' Then, for example, depending on the respectively applied via the sensor at the power input feeding signal, an output signal, for example, an output current, for example, between 4 and 20mA, which, for example, is forwarded to a connected to this control. The functional module with partial housing 132 ' Thus, it is also expedient to have at least one supply unit and is connected via terminals to a power supply.

In a modification, however, a trained as output module, encased functional unit could also be used to forward an output signal, analog or digital, eg for switching an actuator, for example, a resident within an Ex zone actuator. Additionally or alternatively, a trained as input module, encased functional unit an input side received signal instead of a sensor from another component, such as a logic and / or control component to receive.

Based on the comments on the figures described above with respect to the coupling regions formed at common interfaces, the functional module can have partial housings 132 ' thus preferred, eg as in 10 displayed, the functional unit 117 '' and the functional unit 118 '' provide energy via respective coupling elements. A signal and / or data transmission can also be electrically isolated between functional module with partial housing via respective coupling elements arranged correspondingly at coupling regions, in particular also bidirectionally 132 ' and functional unit 117 ''' as well as between functional module with partial housing 132 ' and functional unit 118 ''' respectively. The functional module with partial housing 132 ' thus has expediently further at least logic unit. In addition or as an alternative to always using the functional module with partial housing 132 ' running signal / data flow between functional unit 117 ''' and functional unit 118 ''' can, however, as well as at 10 indicated, a coupling region with corresponding coupling elements directly to a common interface between the functional unit 117 '' and the functional unit 118 ''' be formed to a signal and / or data transmission directly, ie without the interposition of the functional module with sub-housing 132 ' to enable. Such a coupling region can also be designed for unidirectional, but in particular also for bidirectional transmission. As can further be seen, this may also be a coupling region between the functional unit 117 ''' and the functional unit 118 ''' without forming a prescribed overlap area. Thus, the respective circuit boards with the coupling elements, for example, without forming an offset, in particular with a respective lateral side, be aligned with each other. The coupling elements are then arranged, for example, on the respective same surfaces of the printed circuit boards and aligned with each other such that a magnetic field can form between these coupling elements

Also in the embodiment according to 10 Thus, preferably at least one functional module, ie one or more functional unit (s) housed together in a separate sub-housing, ie in particular input and / or output units, does not receive its electrical supply voltage externally via a supply connection arranged thereon but via a coupling region for electromagnetic fields at a common interface between its own sub-housing and another functional module or its sub-housing, ie from this other functional module, which thus expediently has at least one supply unit. Particularly preferably, by means of such a functional module having a supply unit, in the case of a plurality of further functional modules connected thereto via corresponding coupling regions, ie in particular input and / or output modules, several or all further functional modules then receive their supply energy via respective coupling elements respectively provided for energy transmission. Such a functional module which provides the power supply for further functional modules can thus in turn preferably be a base module, in particular corresponding to the explanations above.

In particular, input and output modules according to previous embodiments can thus be used in automation applications in appropriate training as "I / O modules" (input / output modules) by the professionals of automation technology based on the English jargon usually as " I / O module "refers to which, in the context of an electronic input / output device used in automation technology, enable an interface or several interfaces to the outside world, in particular to the field level, to a higher-level automation system. The at 10 sketched execution can therefore also be used to implement eg an isolation amplifier with two I / O modules and a supply module.

11 shows in cross section a further embodiment of a contact geometry for forming a coupling region, in the illustrated example of a coupling region with at least for the transmission of energy arranged coupling elements.

For clarity, are at 11 the embodiment according to 5 corresponding or correspondingly acting components occupied by identical reference numerals. The functional unit included as a functional module 118 ' can thus be designed, for example, as an output module or in the case of an I / O module as an output module and carries on and / or in a first printed circuit board 143 For this required electronic components. On or in a second, by means of a contact point 149 at least electrically with the circuit board 143 connected circuit board 148 is at least one intended for energy supply coupling element 152 ' functionally arranged and electrically connected. The encapsulated functional unit 119 ' is therefore expediently designed as a supply module and likewise has a printed circuit board 146 ' For this required electronic components. In the illustrated embodiment, the circuit board is used 146 ' Furthermore, as a common circuit board and consequently also carries at least one provided for power supply coupling element 152 ' , One between the Coupling elements at the common interface 120 the composite functional modules adjusting magnetic field is denoted by the reference numerals 147 busy. On the side facing away from the interface in the coupling region sides of the coupling elements supporting printed circuit boards can in appropriate training again the magnetic field 147 to a back shielding material layers and / or foils 148 be arranged. The walls of the sub-housings of the housed functional units 118 ' and 119 ' evidently form additional isolation distances, at 11 with "first insulation distance" and "second insulation distance" referred to in order to achieve the galvanic separation, in particular required intrinsic safety, required or prescribed isolation distances.

at 14 is a section of one compared to 11 a slightly modified, another embodiment with contact geometries to form a plurality of coupling regions outlined in cross section. In the following, only the modifications will be discussed, and otherwise the same reference numerals as in 11 used for the same or equivalent components. The exemplary embodiment here shows a section of a housing designed as a base housing 130 "' , in which a plurality of each housed as input module or output module functional units, eg already in connection with 13 described functional units 117 ' . 118 ' can be used. The trained as a base housing housing 130 ''' houses for this purpose a plurality of, in particular one behind the other and spaced apart circuit boards 146 each arranged thereon, suitably aligned to the respective same direction towards coupling elements. In designed as a base housing part housing 130 ''' Furthermore, each slot-like connection options for the plurality of housed functional units 117 ' ' 118 ' intended. The slots are in this case by appropriate shaping of the housing part 130 ''' between the individual, spaced apart printed circuit boards 146 educated. In such a slot, therefore, a respective functional unit 117 ' . 118 ' by simply inserting or inserting the part housing 130 ''' be recorded and connected to this. Each recorded functional unit 117 ' . 118 ' can then with the sub-housing 130 ''' a separate coupling region for electromagnetic fields at a respective common interface 120 form.

For improved mechanical connection, in particular also exact alignment and fixation, can eg on housing surfaces, which have a respective common interface 120 form, each complementary connecting elements 121 be provided. These fasteners 121 For example, can be designed to be complementary so that they lock each other when assembling the individual housing parts. For a like 14 sketched arrangement of successively or successively in the connection slots of the base housing 130 "' accommodated function modules, for example, there are each a groove-like recess and a nose-like increase at two opposite, provided for the formation of interfaces surfaces of a housing part. A respective nose-like elevation of a respective housing part can consequently engage in a respective groove-like indentation of an adjacent housing part in the formation of a respective common interface.

Overall, the present invention and its embodiments thus relates to an electronic input / output device 115 . 115 ' . 115 ' , in which according to the invention galvanically isolated circuits or potential groups of respective or selected functional units are integrated into individual housing parts or partial housings in order to be able to combine these in a flexible manner. An electronic input / output device according to the invention with galvanic isolation accordingly has a separate housing for each relevant functional unit or group of potential groups or is at least composed of two different partial housings. The assembled housing parts are mechanically, but not electrically connected. Between the potential groups, energy, data and / or signals can be transmitted inductively and / or capacitively via coupling elements utilizing electromagnetic fields.

Modularity of electronic input / output devices with galvanic isolation is increased by the present invention. Furthermore, it is possible, e.g. To provide isolation amplifiers with system cabling.

Due to the galvanic isolation by means of the housing walls very high insulation requirements can be met. For example, it is also possible to supply energy to sensors and / or actuators located in potentially explosive areas and to evaluate their data. In particular, the requirements of the standard DIN EN 60079-11 , in particular in the version valid at the filing date.

LIST OF REFERENCE NUMBERS

100

Isolation amplifier according to the prior art

101

first functional unit

102

second functional unit

103

third functional unit

104

first part housing

105

second sub-housing

106

third part housing

107

input unit

108

output unit

109

supply unit

110

circuit board

111

coupling element

112

coupling element

115, 115 ', 115 "

electronic input / output device with galvanic isolation

117, 117 ', 117 ", 117' ''

Functional unit, e.g. input module

118, 118 ', 118 ", 118"'

Functional unit, e.g. output module

119, 119 '

Functional unit, e.g. supply module

120

interface

121

connecting element

123

coupling region

140

contact geometry

130, 130 ', 130 ", 130' ''

Part housing as a base housing

131

feature card

132, 132 '

Enclosures

133

Housing part for forming a contact geometry

141

Enclosures

142

Enclosures

143, 144, 143 '

circuit board

145, 146, 145 '

Printed circuit board with coupling element, e.g. with coil

147

magnetic field

148, 148 ', 148 "

magnetically conductive material

149, 149 '

Contact point for the electrical and mechanical connection

150

terminals

151, 152, 152 '

coupling element

160

visualization means

200

rail

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102015108911 A1 [0005]

Cited non-patent literature

• Standard DIN EN 60079-11 [0015]
• DIN EN 60079-11 [0045, 0104]

Claims (11)

Electronic input / output device of the signal, data and / or energy transmission with electrical isolation (115, 115 ', 115 ") comprising at least a first functional unit (117) and a second functional unit (118, 119), wherein the first functional unit ( 117) is installed in a first sub-housing (104, 132) and the second functional unit (118, 119) is installed in a second sub-housing (105, 106, 130), wherein the two sub-housings (104, 105, 130, 132) are mechanical connectable to each other and form a coupling region (123) for electromagnetic fields at a common interface (120). Electronic input / output device after Claim 1 , wherein electrical energy, signals and / or data between the functional units (117, 118) with an inductive coupling device is transferable and / or wherein each sub-housing (104, 105) is made of an electrically non-conductive material. Electronic input / output device after Claim 1 or Claim 2 , wherein between the two sub-housings (104, 105) data and / or signals can be transmitted via a radio link. Electronic input / output device according to one of Claims 1 to 3 , wherein the two sub-housings (104, 105) have a contact geometry (140). Electronic input / output device after Claim 4 wherein the common contact geometry (140) comprises magnetically conductive material for controlling an electro-magnetic field and / or is step-shaped. Electronic input / output device one of Claims 1 to 5 wherein one of the sub-housings (104, 105) accommodates as an operating unit an input module (117), an output module (118) and / or a supply module (119) of the input / output device (1115, 115 ', 115 "). Electronic input / output device according to one of Claims 1 to 6 , wherein a plurality of first partial housings, in particular with functional units (131) accommodated as input modules and / or with functional units accommodated as output modules, are connected to the second partial housing (130). Electronic input / output device according to one of Claims 1 to 7 in which the energy supply of the first functional unit accommodated in the first partial housing (104, 105, 130) takes place via the coupling area for electromagnetic fields at the common interface formed with the second partial housing. Electronic input / output device according to one of Claims 1 to 8th wherein the input / output device comprises an error notification contact for monitoring a mechanical contact between the sub-housings (104, 105, 106, 130, 132). Functional unit which is installed in a sub-housing and either as the first, installed in the first sub-housing or as a second, installed in the second sub-housing functional unit in an electronic input / output device according to one of Claims 1 to 9 can be used, wherein the sub-housing - if this is the first sub-housing is formed, for mechanical connection to a sub-housing, which can be used as a second sub-housing in the electronic input / output device, or - if this is the second sub-housing is formed, for mechanical connection to a sub-housing, which can be used as the first sub-housing in the electronic input / output device; in each case with formation of a coupling region for electromagnetic fields at a common interface. Function unit after Claim 10 and further configured to effect energization of the first functional unit housed in the first sub-housing via the electromagnetic-field coupling region at the common interface formed with the second sub-housing.

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