DE102006011654A1 - Seating arrangement for motor vehicle, has detection sections provided in respective regions of respective horizontal cushions for detecting measuring signal indicating deformation degree of vertical cushions - Google Patents

Abstract

The arrangement has a seat core structure whose configuration is adjustable. Horizontal cushions (1a, 2a) support a seating area of a user, and vertical cushions (1b, 2b) support a back section of the user. Detection sections (11, 12, 13, 21, 22, 23) are provided in respective regions of the respective horizontal cushions for detecting a measuring signal that indicates the deformation degree of the vertical cushions.

Description

The Invention is directed to a seat assembly, as well as hereby equipped motor vehicle. In particular, the invention is directed on a seat assembly as such is able to provide signals the information about give the occupancy of a vehicle seat.

Of the Occupancy state of a vehicle seat can be known per se Way can be determined by switches, for example, the closed state a buckle, or exceeding a Grasp weight on the seat.

Of the Invention is based on the object, a cost feasible Circuit technology to create the allows in the field of seating arrangements and in the context of the use of seating arrangements against the previous concepts improvements in comfort and safety for the respective To reach seat occupants.

These The object is achieved by a seat assembly with a variable with respect to their configuration adjustable seat core structure, and an elastically deformable Seat cushion means for providing a buttocks area a seat user supporting Horizontal cushion section and one of the back area of the seat occupant supporting Vertical cushioning portion, wherein at least in the region of the horizontal cushion portion a detection structure is provided for detecting a regarding the degree of deformation of the vertical cushion section indicative Measuring signal.

Thereby is it possible in an advantageous manner in-depth information regarding the type of seat use and based on this an improved setting of the Seat and possibly configuration of the environment to bring about. It is possible, the seat according to the invention such that the weight of the user in a relative narrow band range can be detected. Furthermore, it is possible by the inventive concept to determine if the seat of a special use, for example, under Use of a child seat or goods transport is subject. In the latter case, for example, a seat associated with the Airbag and Gurtstraffersystem disabled and, for example, the ventilation of the footwell throttled in front of this seat and turned off the heating of the seat become.

The Detection structure is preferably designed as an electrode system For example, as such a capacitor device forms their capacity in dependence changes from the cushion deformation.

alternative For this purpose, or in combination with this measure, the detection structure Also be designed as a potentiometer system whose resistance in dependence changes from the cushion deformation. The potentiometer system can be made by an electrically conductive foam material be formed, whose resistance is due to the compression of the Foam material changed, especially increased.

Especially in the realization of the detection structure based on a Capacitor principle here is a surface electrode provided, the in the vicinity of a through the corresponding pad section defined contact surface extends. This surface electrode can be outwardly entire area be formed isolated. By the voltage applied to this surface electrode a field is generated that surrounds the area electrode interspersed and in dielectric systems, such as a Seating users Load shifts causes the fields in turn which surround the seat user. These fields can be in dependence from the attitude of the seat user, as well as pointing gestures be transported to certain areas and this desired switching functions trigger or cause configuration reconciliations.

The Electrode device can be made of an electrically conductive plastic material, e.g. one with conductive Particles (e.g., carbon, metal) are loaded with elastomeric material be made. The electrode device can in particular also Part of a seat heating form or be realized by this.

The Electrode device is preferably integrated in an LC network in such a way that the electrode device that in the frame a deformation of the cushion portion a capacity change of a capacitor system formed including the electrode means.

The electrode system can be subdivided into a plurality of sections so that the deformation state of the cushion zones assigned to the respective sections can be detected in each case. It is possible to classify the load condition of the seat per se on the basis of the deformation states of the individual cushion zones. Based on this classification, as already stated, the seat device can be configured per se and / or the surroundings of the seat user can be coordinated (activation / deactivation airbag, belt tensioner, heating, audio system). It is possible to configure the circuit incorporated in the seat in such a way by the seat user effected field electric coupling effect between the electrodes of the Upholstered zones is detected. In particular, it is possible to detect the field-electric coupling effect caused by the seat user between an electrode device associated with the horizontal cushion section and an electrode device associated with the vertical cushion section and to consider this as a particularly relevant detection feature.

It is possible, at least one of the electrode means by an electric conductive Tissue or (preferably perforated) to realize film layer the on a cushioning effect with inducing foam material applied, or embedded in this.

It is possible, form the detection area so that the foam material is received between two electrode layers.

It but it is also possible to provide a counter electrode system directly through the seat structure. Thus, the seat may have a seat core structure which at least in sections from an electrically conductive Material is made, one by a deformation of the upholstery brought about rapprochement the electrode device to the seat core structure based on the change the capacity one including the electrode means and the seat core structure formed capacitor system is detected.

The inventive seat concept is suitable in addition to recording the seat load also to fields, or signals in certain areas surrounding the seat to transfer the user. About the in the respective seat, integrated electrode device can one over the seat user to at least one indication area leading signal transmission path be formed. about the seat user can do that over the electrode device is coupled into the respective seat user, preferably modulated with respect to a particular signal pattern or information content quasi-static alternating voltage event in one in the indication area lying interface device coupled, and / or also (inverted Signal transport direction) are decoupled.

The System can be tuned so that the extension of the signal transmission path in the indication area only by gestures or attitudes of the seat user he follows. In addition to the pure existence of the signal transmission path can also temporal characteristics in the construction of the same (temporal gesture pattern) evaluated and for the generation of switching signals are used. As part of the extent of the signal transmission path in the indication area can Functions in the indication area are triggered. To these functions belong For example, the flashing of buttons that will become active Comfort drives, the automatic accommodation of functional components such as ashtrays, cup holders, display elements, and cell phones Etc.

It is possible when using several inventive seats in a motor vehicle to make a driver / passenger distinction by becomes, to which electrode device the signal transmission path ver runs, or, from which this begins. About the respective seat For this purpose, a seat-specific signal sequence can be coupled into the seat user become.

It is possible, to train the seat in such a way that over the respective seat device, a signal is detected by a seated user-side mobile Indicator circuit is provided. About this identification circuit a signal can be provided which enables an authorization proof or for example, also with regard to a preferred seating and Environment configuration carries indicative data. This data can be through Modulation of a quasi-static alternating field, e.g. ASK, FSK (Q-) PSK to be provided.

About the each seating device may provide a signal for a hands-free system, and / or for others Audio or visual purposes.

According to one particularly preferred embodiment The invention makes it possible to use the seat device in the respective seat occupant a modulated quasi-static alternating field coupled, where in the range of clamping or injury relevant Zones provided in the surrounding area of the seat detection means are that are designed so that this in the seat user detect the coupled alternating field as soon as a detection relevant Intervention in the respective detection means associated detection area he follows. This will make it possible a pinching in Bewegungsspaltbereichen as they are in the surrounding area seat (e.g., window, sunroof, seat sliding track) are to be prevented.

It is possible, the signals injected by the seat device, or detected Seat information in combination with other detection signals evaluate. Furthermore, it is possible over the incorporated into the seat and the degree of deformation of the cushioning device recording means to control a Sitzstelleinrichtung.

Preferably, it is directly in the seats Direction incorporated a circuit which generates as such measurement signals which are within a normalized level range, move, or are readable as digital data. In the realization of the erfindungsge MAESSEN circuit via a seat heater, it is possible to tap the supply voltage of the measuring system from the seat heating system. The tap can be carried out in particular by an electrical connection of the measuring circuit to areas of a resistance heating element (in particular conductive foil) which have different voltage potentials.

It is possible, in the seating device Stelltriebe involve, including the invention raised, deformationsindikatven measurement signals are controlled. It is special possible, in the seat device to incorporate pocket elements which defines with a gas, or preferably a gel viscous medium be filled can and can inflate accordingly filling with a fluid, especially gel, can be pumped by hydrostatic pumps, especially gear pumps. This makes it possible to customize Seat cushion configurations bring about a high degree of ergonomics distinguished. The seat configuration can be gradually changed during seat use, around during longer Seat uses the support effect to vary the seat cushion.

It is possible, the inventive device for detecting the cushion deformation for at least a large extent to use automated seat adjustment. That's the way it is a driver's seat possible, to bring about an advantageous seat adjustment by the steering wheel with arms stretched out and the seat moved in this way is until in the backrest a certain degree of deformation of the Padding or contact pressure results.

It is possible, too, to detect the degree of deformation in certain seating zones and on Based on this information to reconcile the seating configuration in particular, it is possible the pressure of the thighs of the seat occupant, or the seat deformation in the leading edge area of the seat to capture and by this detected states the Sitting position, or to adjust seating orientation.

The Integration of the seat device according to the invention in the electrical system of a motor vehicle, train, aircraft or other means of transport may be based on conventional Wiring concepts take place. It is also possible this integration to realize sections of contactless acting transmission systems. In particular, it is possible the signal transmission radio-based, visually, between the respective seat and the electrical system or especially about make capacitive coupling devices.

Further Details and features of the invention will become apparent from the following Description in connection with the drawing. It shows:

1 a schematic representation of a seat according to the invention with a device for detecting the deformation of the seat cushion indicative signals, as well as for coupling / uncoupling a quasi-static modulated field in the seat user;

2 a perspective sketch for illustrating the use of a inventively designed seat assembly in a motor vehicle;

3 a schematic diagram illustrating the signal flow from the horizontal padding to the vertical padding, and a separate from the seat detection system;

4 a schematic diagram illustrating a signal flow to the horizontal padding;

5 a schematic diagram illustrating various signal flow paths involving the seat occupant and his posture and gestures;

6 a simplified representation of a correspondingly a seat load deformable foam cushion element which is provided on both sides with surface electrodes, these two surface electrodes are driven via a designed as ASIC local circuit, this local circuit is designed such that it can be controlled addressable and the locally generated measurements read out as digital numerical values are.

7 a sectional view for further illustrating the foam cushion element according to 6 ,

On Basis of the solution concept according to the invention it becomes possible a e.g. Seat occupancy recognition classified with regard to seat load perform, which is due to the system according to the invention in addition to the seat occupancy recognition can realize additional advantageous additional functions.

The technique of the invention makes it possible to distinguish whether there are objects on the seat or children or a woman or a man. The inventive technique he allows such a classification in circuitry advantageous manner feasible.

Car seats are often electrically adjustable. As they walk open on rails (to be moved) it is possible that vehicle occupants can injure themselves when they put their hands in the car keep moving parts. By the inventive concept, a non-contact acting clamp protection for the respective seat be realized. Furthermore, it will be possible the Sitting position, the adjustment of the backrest and other seating elements to determine and e.g. with a memory function a seat again and again in the for to bring the respective seat occupant optimal attitude. Further it is through the inventive concept possible determine from which seat controls are operated, e.g. Buttons on the dashboard, accessible to the driver and front passenger. Also includes in particular, the steering wheel, wherein by the inventive concept It can be determined if and how it is touched by the driver and actuated becomes.

in the and electrodes are preferably located on the vehicle seat a resistive material. By imprinting frequencies and by capacitive Alternating field effects it is possible on reliable Assign the required functions of a seat occupancy with person monitoring (for safety reasons), Person classification (child, woman, man) and stowed on the seat objects (e.g., beer crate) and measure. It generates the invention signals which digitally processes at its output can be or be processed by simple microcontroller. Latter can Take over the control of the seat in terms of its adjustment.

1 shows the structure of the Osz.Sens sensor oscillator and the reference oscillator Osz.Ref, whose two outputs are connected to the input of a first mixer (eg XOR). A downstream low pass now passes the amount of the resulting mixing frequency. A microcontroller can evaluate this signal in terms of frequency, for example via a comparator. It is also possible to replicate the reference oscillator in the microcontroller in order to save components (PWM). Instead of a changeover switch WS, the microcontroller can switch the capacitors C1, CG and CS alternately via its ports to ground. The circuit also shows the level receiving means housed in the backrest of the seat in question. This allows it, controlled by a mixer, also a reference frequency (eg Osz.Ref) supply to be similar to a radio only to a certain frequency adjustable and there to measure the level. This frequency is identical to the mixing frequency generated by the seat occupancy. The collected signal level is rectified and can be supplied to an ADC, which may also be located in the microcontroller concerned. By switching several input points can be formed for the level, which are positioned according to the invention in the backrest and / or the headrest.

Favorable additional benefits

In the environment of the seat, e.g. on the steering wheel, in the vicinity or on the dashboard or in certain areas at counters, Touchscreens, levers, etc., can also the level meter according to the invention be accommodated when approaching human limbs the level of an over the skin of the person imprinted Determine the frequency in amplitude and to an evaluation unit to lead can (e.g., via S2). The imprint happens automatically when a person on the seat place takes, since the capacitive alternating field yes through the resistive sensor element imprinted on the skin becomes. The imprint is weak and medically harmless, so that man himself not in danger of getting electrocuted. However this has many advantages. For example, if a level detector is on one electrically operated Sunroof attached, so it is now possible to determine whether a vehicle occupant with his limbs approaches this roof. This could be under circumstances (e.g., when closing) dangerous be, as there are closing columns form, the engine forces sufficient to cause serious injury to a person's limbs. Of the Detecting a signal level at the location means that it is from one sitting on the acted upon with the invention sitting with his limbs there was brought. The dynamics of the level rise is also a Indication of an approximate speed and / or whether the limbs are approaching or remove. If an even more precise distinction is desired, then Is it possible, the frequency generated by the sensor and / or reference oscillator to modulate with the help of demodulators the source safely to be able to determine. The modulation can be from an admission with data and / or determinable frequencies or frequency range.

An Oscillator Osz.Ref switched first Schmitt trigger uses a resistive material, which is connected to its input and output. In addition, it is possible to select different capacitive elements at its input via a selector switch WS. A first element is a fixed capacitor. Along with this, according to the formula 1 / (hysteresis factor × R × C), a frequency is generated whose height, in addition to the fixed capacitor, depends on the resistive material. Additionally introduced capacities, eg by human limbs, cause a frequency detuning and / or a change in the duty cycle of the RC oscillator Osz.Sens. If the resistive element is pronounced as a film in the seat, for example, a person sitting on it can be detected as an additional capacity. Since the effects of the additionally introduced capacity are quite minimal (few picofarads), it is helpful to significantly increase the detection sensitivity with the aid of a reference oscillator Osz.Ref and a mixer with a downstream low-pass filter. This is done by first tuning both oscillators by readjusting the reference oscillator in such a way that their frequency is the same. Thus, no mixing frequency (zero balance) appears behind the mixer and the low pass. This zero adjustment can happen, for example, when the system is activated, eg switching on the ignition, opening the vehicle door to board, etc. A change in seating capacity can now result in a mixing frequency at the low-pass output, which depends on which surface a person or an object on the other hand, the ground capacity of the person or the object against the vehicle mass is strong, since all the capacitances of the sensor operating as a first RC oscillator Osz.Sens are connected to a pole to ground. The initially mentioned selector switch WS can now be moved further by one point in order to guide the resistive capacitive recording material, for example, against a ground electrode which is separated from the former by an elastic dielectric (eg foam). Due to the weight of the person lying on the coupling film and thus on the seat of the foam is compressed and indeed the higher the weight - the closer the two Kondensatortlächen, which corresponds to an increase in capacity. Since this results in a lower frequency of the first RC oscillator Osz.Sens, (at a constant reference oscillator frequency) at the output of the low pass connected downstream of the mixer will appear a mixing frequency whose magnitude corresponds to the weight of the person or object on the seat , By alternately turning on (toggling) the selector switch, it is now possible to determine whether a conductive mass-to-ground person or a non-conductive or non-grounded object (eg, a heavy transport box) is on that seat because of weight and capacitive proximity to each other Relationship and can be compared by an evaluation unit. In a third switch position of the selector switch WS, it is possible to accommodate a capacitive / resistive receiving element in the vicinity of the booster rails to determine whether there human limbs are guided during an adjustment process, which should lead to a shutdown of the servomotor and / or to a warning , Since the resistive material of the film is indeed always subjected to a frequency, it is possible to prove this elsewhere, for example in the back of the seat, by a level meter, the level is higher the closer a person is to this. If several supply points for the level meter are distributed in the seat, it is possible to deduce the size and / or shoulder width of a person. It is also possible to incorporate into the back part of the seat a resistive material, eg in the form of a strip or a grid, which detects the level input by persons or objects and acts somewhat like an electronic calliper. The same arrangement also allows the determination of the movement of a person on their seat (body data). Since resistive film materials are often already present in vehicle seats (eg for seat heating), these can be used according to the invention advantageously for seat occupancy detection, which should lead to the saving of costs.

Favorable Additional benefit in seat adjustment

There the seat runs along rails Is it possible, there also the signals generated by the oscillators, e.g. capacitive to impart to a resistive material along the rails is carried. At the ends of this material arise voltages U1 and U2, the Information about give the sitting position. So levels have no effect divided the voltages and evaluated the quotient. Similar to With a servomotor, it is now possible, a seating position recurring to approach. As always the absolute position is known, too Limit switches and other distance measuring devices (eg rotary encoders) can be omitted. additionally but applies as in the aforementioned inventive seat occupancy, that introducing additional capacities to a frequency change leads. This always happens when e.g. a human hand itself approaching this rail. The electronics should then stop an electrically moving seat, to prevent injuries of the fingers.

The solution according to the invention allows in one cycle the determination of a seat occupancy by persons or objects their physical dimensions and the determination of the seating position and determining whether persons with their limbs are different Want to reach places in the vehicle. For this purpose, only a few logic gates used, which facilitates digital processing.

In terms of EMC safety, it is possible to turn on a frequency lock, such as a choke, between the oscillator and the resistive material. For this purpose, it is further necessary, the frequency-determining capacitor to the other point of the outer end of the resistive Ma accommodate terials. Outside penetrating frequencies are now blocked by this capacitor to ground. If the frequencies are higher than the measuring frequency of the oscillator, the throttle acts. In an advanced embodiment, it is possible to operate the oscillator so that its level is increased at its output by a series resonant circuit LC. Again, the Kondenstor is again attached to the outer end of the resistive material. This time, however, it is larger, which corresponds to lower resistance at higher frequencies. In addition, the interference frequencies must now be higher than the frequency level generated by the oscillator (sawtooth caused by hysteresis). This can be adjusted via the quality and the inductance of the inductor L.

2 shows very simplified a vehicle interior with several seats 1 . 2 . 3 . 4 , The front seats 1 . 2 are in the range of horizontal cushions 1a . 2a with several detection sections 11 . 12 . 13 such as 21 . 22 . 23 Mistake. Also in the field of vertical upholstery 1b . 2 B (Backrests) detection sections not shown here are formed. The detection sections 11 . 12 . 13 such as 21 . 22 . 23 are designed so that the load or deformation of the horizontal upholstery can be detected sectionally by this. So can about the zones 11 . 21 the forces exerted mainly by the buttocks on the horizontal upholstery forces are detected. Through the zones 11 . 13 such as 22 . 23 For example, the forces exerted by the thighs on the leading edge zone or cushioning deformations caused thereby can be detected.

The seats 1 and 2 comprise a seat core structure variably adjustable in configuration, and an elastically deformable seat cushion means for providing a horizontal cushion portion supporting the seat area of a seat occupant 1a and a vertical pad portion supporting the back area of the seat occupant 1b , wherein at least in the region of the horizontal cushion portion 1a a detection structure is provided for detecting the degree of deformation of the vertical cushion portion indicative measuring signal.

The Detection structure is designed as an electrode system that As such, a capacitor device forms its capacity in Dependence on the cushion deformation changes.

The Electrode devices of the electrode system are made of an electric conductive Made of plastic material. The electrode devices are each into an LC network integrated and the electrode means are arranged and formed, that in the context of a deformation of the padding section capacity changes a capacitor system formed with the inclusion of the electrode device result.

The Electrode system is divided into several sections, over which the state of deformation of the padding zones associated with the respective sections is detected. The load condition of the seat is determined by the load conditions the upholstered zones classified.

The seats and the evaluation circuits associated therewith are designed in such a way that furthermore a field-electric coupling effect effected by the seat user is detected between the electrodes of the upholstered zones. Especially in the front seats 1 and 2 a field-electric coupling effect caused by the respective seat user is detected between an electrode device associated with the horizontal cushion section and an electrode device associated with the vertical cushion section.

In the exemplary embodiment shown, a signal transmission path leading via the seat user to at least one indication region F1, F2, F3, F4 can be formed via the respective seat, in particular at least one electrode device integrated in the seat. About the electrode devices 11 . 21 can be coupled into the respective seat occupant a quasi-static AC voltage event. The corresponding coupled into the seat user field can be coupled in accordance with the attitude or gestures of the respective seat user in the indication area F1, F2, F3, F4.

in the Seating users caused extension of the signal transmission path in the indication area can Functions in the indication area are triggered. Fall under this especially the illumination of buttons, the activation of comfort drives, the demise of functional components such as ashtray, cup holder, Display, mobile phone.

In the indication areas F1..F4 detection devices are provided, which allow as such a detection of the spatial movement of the hands of the respective seat user. By way of example, these detection devices can have a plurality of electrodes spaced apart from one another, with detection of the current position of the hands of the seat user taking place by evaluation of the level applied to the respective electrodes. On the basis of the course of the signal transmission path over the respective seat, a seat user recognition and corresponding menu provision and authorization can take place. For seat occupancy recognition, a seating position specific can be entered in the seat occupant via the respective seat sche signal sequence can be coupled.

About the Seat device may be a modulated in the respective seat occupant Quasistatic alternating field are coupled in the range of Clamp or injury zones in the surrounding area of the Seat detected by detection means and for switching off hazardous operations can be used.

The rear seats 3 and 4 are also with detection devices 31 . 41 fitted. About this, the seat occupancy can be determined. If occupancy of the seats is recognized, the setting range of the front seats can be restricted. It is possible that in the backrest of the respective front seat 1 . 2 Integrated electrode device for detecting any, through the knee area of the respective user of the rear seats in the back of the backrests 1b . 2 B to use coupled signals. This makes it possible a disadvantageously strong constriction of the footwell of the rear seats 3 . 4 submissions.

The in the respective seat user arranged electrode means can for the coupling or decoupling of signals in or from the respective Seating users are used to signal the presence of these signals limbs in hazardous areas capture. This allows in particular clamping situations in window, sunroof, door, and Top closing gaps be avoided.

In 3 is sketched a vehicle seat. This includes a horizontal plunger 1a associated electrode E1 and a vertical pad 1b assigned electrode E2. It is possible to incorporate these electrodes E1, E2 in terms of circuit technology in an evaluation system such that a signal transmission S1 between the electrodes E1, E2 and a signal transmission S2 to a seat-separated interface system is made possible.

In 4 illustrates a concept according to which can be coupled via the electrode E1 signals S2 'in the form of data telegrams in the electrode E1. These signals S2 'may be provided by peripheral interface systems. It is possible to couple the signals S2 'in the indication areas F1... F4 into the seat user by means of local electrodes provided there with local-electrode-specific data identification. Based on the level of signals picked up at the electrode device E1 with local-electrode-specific identifier, gesture and pointing motion detection can be performed.

In 5 It is shown how the signals provided by the seat electrode E1 in the form of a modulated charge aura of the seat occupant can be guided in different areas of the seating environment.

The signal S1 can be used for seat occupancy detection. The signal S2 can be coupled into an electrode device provided in the vehicle steering wheel. The signals S21, S22 can be moved by gripping and pointing movements of the seat occupant into selected identification areas F1, F2, F3 (see FIG 1 ) and trigger switching operations there, such as in the area F3 Türverriegelungs- Seitenspiegel-, as well as window lifting operations.

in the Indication range F1 can be comfort electronics (climate, audio, ...) be controlled. In the area F2, driving-related can be transmitted via the signal path S22 operations (Gear ratio selection, Handbrake ...) are caused.

In the 6 and 7 is a foam cushioning element 50 represented, which can be integrated as such in a seat upholstery. The foam cushion element is provided on both sides with an electrically conductive electrode layer E1, E1 '. The foam cushion element itself is made of a non-conductive plastic foam which extends between the electrode layers E1, E1 '. The two electrode layers E1, E1 'and the intermediate foam material section form a capacitor. The capacity of the same is changed by crushing the Schaummaterialabschnittes. The change in capacitance can be detected in conjunction with an LC network formed with the inclusion of that capacitor and output as a measured value.

at the embodiment shown here is on the electrode layer E1 'a executed as an ASIC Circuit ASC set up. This circuit ASC includes a high voltage output the over a flexible line L1 is connected to the electrode E1.

The Circuit ASC is designed such that this applies an alternating voltage to the two electrode layers E1, E1 'via which a reliable one correlated with a pinch of the foam cushion element capacity change can be detected. The circuit ASC can be designed in such a way that this addressable is controllable and a digital signal provides. The digital signal can be generated in such a way that this the pinch degree of the foam cushion element in example Indicates 12 levels.

Claims (24)

Seat arrangement with a respect to their Kon figuration changeable adjustable seat core structure, and an elastically deformable seat cushion means for providing a buttock area of a seat user supporting horizontal cushion portion and a back portion of the seat user supporting vertical cushion portion, wherein at least in the region of the horizontal cushion portion, a detection structure is provided for detecting an indicative of the degree of deformation of the vertical cushion portion measurement signal. Seat arrangement according to claim 1, characterized in that that the detection structure is designed as an electrode system as such a capacitor device forms their capacity in dependence changes from the cushion deformation. Seat arrangement according to claim 1, characterized in that that the detection structure is designed as a potentiometer system, its resistance is dependent changes from the cushion deformation. Seat arrangement according to at least one of claims 1 to 3, characterized in that the detection structure comprises an electrode device includes, in the neighborhood of one through the corresponding one Padded portion defined support surface extends. Seat arrangement according to at least one of claims 1 to 4, characterized in that the electrode device consists of a electrically conductive Plastic material is made. Seat arrangement according to at least one of claims 1 to 5, characterized in that the electrode device is part of a Seat surface heating forms. Seat arrangement according to at least one of claims 1 to 6, characterized in that the electrode device in a LC network is integrated and the electrode device is arranged and is formed that in the context of a deformation of the cushion portion a capacity change a capacitor system formed with the inclusion of the electrode device result. Seat arrangement according to at least one of claims 1 to 7, characterized in that the electrode system in several Sections is divided, and that the deformation state of the the respective sections associated cushion zones detected becomes. Seat arrangement according to at least one of claims 1 to 8, characterized in that the load condition of the seat based on the load conditions the upholstered zones is classified. Seat arrangement according to at least one of claims 1 to 9, characterized in that a bewirkter by the seat user field-electric coupling effect between the electrodes of the padding zones is detected. Seat arrangement according to at least one of claims 1 to 10, characterized in that caused by the seat user field electrical coupling effect between a horizontal cushion portion associated electrode means and a vertical pad portion associated electrode device is detected. Seat arrangement according to at least one of claims 1 to 11, characterized in that at least one of the electrode means through an electrically conductive Foil layer is formed which is applied to a foam material is. Seat arrangement according to at least one of claims 1 to 12, characterized in that the foam material between two electrode layers is recorded. Seat arrangement according to at least one of claims 1 to 13, characterized in that the seat core structure at least is made in sections of an electrically conductive material, and that caused by a deformation of the padding approximation of Electrode device to the seat core structure based on the change the capacity of one including the electrode system formed capacitor system is detected. Seat arrangement according to at least one of claims 1 to 14, characterized in that over the respective seat, in particular at least one electrode device integrated into the seat, one via the Seating users to at least one indication area leading signal transmission path is formed, and that over the electrode device in the respective seat occupant quasi-static alternating voltage event coupled, and / or is decoupled. Seat arrangement according to at least one of claims 1 to 15, characterized in that the extension of the signal transmission path in the indication area by gestures or attitudes of the seat user is determined. Seat arrangement according to at least one of claims 1 to 16, characterized in that in the context of the extension of the signal transmission path Functions in the indication area are triggered in the indication area. Seat arrangement according to at least one of claims 1 to 17, characterized in that based on the course of the signal transmission path over the a seat user identification takes place. Seat arrangement according to at least one of claims 1 to 18, characterized in that over the respective seat in the seat user coupled a seat-specific signal sequence becomes. Seat arrangement according to at least one of claims 1 to 19, characterized in that on the respective seat device a signal is detectable by a seat user guided mobile Indicator circuit is provided. Seat arrangement according to at least one of claims 1 to 20, characterized in that on the respective seat device a signal transfer for an audio or Visual replay is handled. Seat arrangement according to at least one of claims 1 to 21, characterized in that on the seat device in the respective seat occupant a modulated quasi-static alternating field coupled, and that in the area of clamping or injury zones in the Surrounding area of the seat detection means are provided, the are formed such that this coupled into the seat user Detect alternating field as soon as a detection-relevant intervention in the detection area associated with the respective detection means he follows. Seat arrangement according to at least one of claims 1 to 22, characterized in that generated by the seat device Detection signal in combination with other detection signals be evaluated. Seat arrangement according to at least one of claims 1 to 23, characterized in that over the incorporated in the seat and the deformation degree of the cushioning means detecting means Seating device is controlled.