The floor panel system comprises a floor panel element, a temperature sensor device, and a connector device. The floor panel element includes a panel structure for transmitting forces applied to the floor panel, e.g. by passengers, and a panel heater device for heating the floor panel element. The panel heater device may be formed, e.g., as a heater layer, and may preferably be integrated into the panel structure. The temperature sensor device is configured for detecting the temperature at the floor panel element, in particular at one or more specific locations of the panel heater device and/or of the panel structure. The connector device is connected to the floor panel element, preferably from the outset of the floor panel element. The connector device comprises a power link for providing or supporting an electric power connection between the panel heater device and an electric power supply. Further, the connector device comprises a data link for providing or supporting a data connection between the temperature sensor device and a control unit, wherein data may be transferred analog or digitally. Preferably, the control unit relates to the Ice Protection Control Unit (IPCU).