System and method for determining a gas concentration using a sensor device

Abstract

A sensor device for measuring a gas concentration includes a sensor element including a cavity having an opening for receiving a gas, a first measuring component and a first heating component arranged in the cavity in each case. The sensor element further includes a control circuit arrangement which is electrically coupled with the sensor element and set up to control operation of the sensor element, wherein the control circuit arrangement is set up to heat the first heating component by applying an electric heating voltage during a heating phase, to measure temperature changes at the first measuring component as a function of the heating during the heating phase, to ascertain a heat characteristic of the gas from the temperature changes, and to determine a concentration of a component of the gas from the heat characteristic that is ascertained.

Dependencies are inferred from the claim text.