A seat for a passenger compartment, for example a vehicle passenger compartment. The seat has a backrest that includes a heating device for heating the space behind the backrest. The heating device includes, from front to back of the backrest, an insulating layer which is a foam, a heating layer, and an outer layer which forms the back of the backrest. The assembly of the insulating layer and the heating layer is achieved by compression on at least their peripheries.

A method for controlling the air-conditioning function of a transportation vehicle seat wherein a value of an air-conditioning parameter is set by an operating element which is moved from a null position in two opposite directions. The air-conditioning parameter controls the distribution of an air-conditioning function in different regions along a first direction indicated by the geometry of the transportation vehicle seat. The separate regions include at least one first and second region. A uniform distribution of the air-conditioning function is produced in the regions in the null position of the operating element. When the operating element is moved in one direction of the two opposite directions, the value of the air-conditioning parameter for at least one of the first and second regions remains constant and is changed for at least the other of the first and second regions. Also disclosed is a device for carrying out the method.

A system for capacitive object detection. In order to provide means for efficiently using the circuitry of an electrical heating device for capacitive object detection, the system includes: an elongate conductive element extending between a first terminal and a second terminal, wherein the first terminal is coupled to ground via a capacitive element and is connectable to an electrical power source, and the second terminal is connected to ground; and a detection circuit connected to at least one detection node disposed on the conductive element between the first and second terminal. The detection circuit is adapted to capacitively detect the presence of an object in the proximity of the conductive element based on an impedance associated with the object.

The invention relates to a circuit unit for controlling load currents of an electrical load, comprising a circuit logic, at least n switch elements with n≥2, resistance elements with m≥1, wherein the resistance elements can be bridged by means of the switch elements, wherein the circuit logic is designed such that it increases the load current in steps to a final value by means of an activation sequence of the switch elements, and a method for controlling load currents of an electrical load.

A vehicle seat may include a seat body having a seat base and a backrest arranged to extend upward from the base. The seat body may include an exterior covering. The vehicle seat may further include a comfort system disposed within the seat body and including a heating track configured to emit heat.

A back panel of a motor vehicle seat element successively includes a layer of paint, a layer of non-expanded foam, at least one thermal device, and a layer of expanded foam.

An insert comprising: (a) a cover layer; (b) a spacer layer located below the cover layer; (c) a connection material that is adapted to extend between and connect the cover layer to a trim layer so that the insert is fixed to the trim layer.

A passenger seat for commercial vehicles and rail systems, having at least: a massage pad for increasing the ergonomics in the waist section of the passenger and applying massage; a compressor for inflating the massage pad; cooling pads for cooling the passenger; a heating pad for heating the upper portion of the seat and the backrest contacting the passenger; a presence sensor for determining whether there is a passenger on the passenger seat; a belt sensor for determining whether the passenger fastens the safety belt; a wireless charging unit for the passenger to charge a mobile device without using a connection cable; a manual control panel for the heating pad, cooling pad and the massage pad; a wireless connection module for the heating pad, cooling pad and the massage pad; and a control unit where the data collected from the presence sensor and belt sensor are transmitted.

A vehicle seat includes a first heater which heats a first region, a second heater which heats a second region different from the first region, and a controller connected to the first heater and the second heater. The controller is capable of executing PWM control under which current applied to the first heater and the second heater is regulated by setting current-application timeframes within a unit time period, wherein a first current-application timeframe that is a period within the unit time period in which current is applied to the first heater and a second current-application timeframe that is a period within the unit time period in which current is applied to the second heater, as set under the PWM control, are shifted relative to each other when current is applied to the first heater and the second heater.

A capacitive detection device includes a capacitive sensor having a sense electrode and an auxiliary electrode that are arrangeable in the vicinity of an electric heater member for mutual capacitive coupling. The capacitive detection device has a signal voltage source providing an alternating measurement voltage, a complex impedance measurement circuit for measuring complex sense currents and for determining a complex impedance based on the measured complex sense current, and for electrically connecting the auxiliary electrode either with the reference voltage or with the guard signal. The method includes providing the measurement signal to the sense electrode and electrically connect the auxiliary electrode selectively either to the reference voltage or to the guard voltage; determining capacitance values in the two different connection states of the auxiliary electrode; and calculating a compensated capacitance value as a weighted sum of the two determined capacitance values, wherein the weighting factors are predefined constant values.