Planar electrode system

1. A planar electrode system, comprising:

at least two foil-type, planar electrodes ( 101 , 111 ) each having electrically conductive areas arranged sequentially and formed onto a substrate ( 105 ),

a first connection ( 103 ) for connecting one of the at least two planar electrodes ( 101 ) to an external sensor control apparatus (SC 101 ),

a second connection ( 113 ) for connecting another one of the at least two planar electrodes ( 111 ) to an external electric heating control apparatus (HC 111 ),

wherein the foil-type, planar electrodes ( 101 , 111 ) have a same foil construction,

the foil-type planar electrode construction is adapted to operate both as a planar sensor, in which case the foil-type, electrically conductive, planar electrode ( 101 ) is connected via a connection ( 103 ) for a sensor to the external sensor control apparatus (SC 101 ), and as an electrical floor heating element, in which case the foil-type, electrically conductive, planar electrode ( 111 ) is connected via a connection ( 113 ) for electrical heating to the external electrical heating control apparatus (HC 111 ), and

wherein the foil-type, planar electrode construction comprises the at least two foil-type, planar electrodes ( 101 , 111 ) being superimposed on each other, an insulating protective layer ( 104 ) above the upper foil-type planar electrode, and another insulating protective layer ( 104 ) between the superimposed foil-type, planar electrodes, and

the construction is adapted to operate such that one of at least two foil-type, planar electrodes is adapted to operate as the planar sensor, and the another one of the at least two foil-type, planar electrodes is adapted to operate as the electrical floor heating element.

2. A method for manufacturing a foil-type, planar electrode construction for floor heating having at least two foil-type, electrically conductive, planar electrodes ( 101 , 111 ), with electrically conductive areas arranged sequentially and formed onto a substrate ( 105 ), the method comprising:

connecting one of the at least two planar electrodes ( 101 ) to an external sensor control apparatus (SC 101 ) using a first connection ( 103 ),

connecting another one of the at least two planar electrodes ( 111 ) to an external electric heating control apparatus (HC 111 ) using a second connection ( 113 ),

arranging the two foil-type, planar electrodes ( 101 , 111 ) so as to have a same foil construction,

enabling the foil-type, planar electrode construction to operate both as a planar sensor, by connecting the foil-type, electrically conductive, planar electrodes ( 101 ) via the connection ( 103 ) to the sensor control apparatus (SC 101 ), and as an electrical floor heating element, by connecting the foil-type, electrically conductive, planar electrodes ( 111 ) via the connection ( 113 ) for electrical heating to the electrical heating control apparatus (HC 111 ), and

superimposing the at least two foil-type, planar electrodes ( 101 , 111 ), and an insulating protective layer ( 104 ) above the upper foil-type planar electrode, and placing another insulating protective layer ( 104 ) between the at least two superimposed foil-type, planar electrodes ( 101 , 111 ),

thereby enabling the construction to operate such that one of the foil-type, planar electrodes ( 101 ) is adapted to operate as a planar sensor, and enabling the another one of the foil-type, planar electrodes ( 111 ) to operate as the electrical floor heating element.

3. The system according to claim 1 , wherein each of the foil-type, electrically conductive, planar electrodes ( 101 , 111 ) comprises a number of the electrically conductive areas that are juxtaposed, and which are connected with connection leads to the corresponding external control apparatus (SC 101 , HC 111 ).

4. The system according to claim 1 , wherein each of the foil-type, electrically conductive, planar electrodes ( 101 , 111 ) comprises at least two electrically conductive, electrode areas that are superimposed, and which are connected with connection leads to the corresponding external control apparatus (SC 101 , HC 111 ).

5. The system according to claim 1 , wherein electrically conductive electrode areas of each of the planar electrodes ( 101 , 111 ) are connected with connection leads, of which at least a part are formed in the construction and which are connected with the corresponding connectors ( 103 , 113 ) to other connection leads on an edge of the construction.

6. The system according to claim 1 , wherein the planar sensor and the electric floor heating element are adapted to operate simultaneously.

7. The system according to claim 6 , further comprising:

a filter (F 101 ), with which interfering signals are filtered, is connected to the external sensor control apparatus (SC 101 ) of the planar sensor.

8. The system according to claim 1 , wherein control by the sensor control apparatus (SC 101 ) and the electrical heating control apparatus (HC 101 ) occurs alternately at set intervals by alternately controlling by means of a switch to alternate the sensor control apparatus (SC 101 ) and the electrical heating control apparatus (HC 101 ) intermittently so that they connect in turn to a same one of the two planar electrodes at set intervals.

9. The system according to claim 8 , wherein the electrical floor heating element and the planar sensor are in a same foil/pattern, and

the planar sensor is adapted to operate sequentially from one foil web to a next foil web, in which case the electrical floor heating element is switched off from the one foil web at a time for 0.1-1 sec when measuring with the planar sensor for detection.

10. The system according to claim 1 , wherein a shape of electrically conductive electrode areas is arranged to be of different shapes in different layers of the system.

11. The system according to claim 1 , wherein the electrical floor heating element is adapted to start when a floor is stepped on.

12. The system according to claim 1 , wherein the foil-type, planar electrodes are arranged crosswise with respect to each other, and include

first parallel webs ( 201 ), which are connected via first web connection leads ( 211 ) and a sensor connection to the external sensor control apparatus (SC 101 ), and

second parallel webs ( 202 ) extending perpendicular to the first parallel webs ( 201 ),

wherein the second parallel webs ( 202 ), which are insulated from the first parallel webs ( 201 ), are connected via second web connection leads ( 212 ) and the connection ( 113 ) to an electrical heating control apparatus (HC 111 ).

13. The system according to claim 1 , wherein the electrical floor heating element is arranged as part of a floor, and the electrical floor heating element comprises crosswise heating foils, which are used for both heating and detecting.

14. The method according to claim 2 , wherein the electrical floor heating element and the planar sensor are arranged on a same one of the protective layers.

15. The method according to claim 2 , further comprising:

manufacturing a foil of the at least two foil-type, electrically conductive, planar electrode ( 101 , 111 ) as a web by laminating a metal foil to a release web,

stamping out electrically conductive electrode areas and foil-type connection leads from the metal foil,

laminating a protective film onto electrically conductive electrode areas and the foil-type connection leads,

removing the release web, and

laminating a backing film to replace a release film.

16. The method according to claim 15 , wherein the web is a sensor web comprising two or more superimposed layers.

17. The method according to claim 2 , further comprising:

forming electrically conductive electrode areas on the substrate as printed layers, laminated layers, etched layers, or as films.