A sensor system has at least one first sensor element for measuring a first physical variable and a second sensor element for measuring a second physical variable. The first sensor element is part of an application-specific integrated circuit which, in addition to the first sensor element, has further electronic circuits. The second sensor element is arranged separately and outside the application-specific integrated circuit. The second sensor element is electrically connected to the application-specific integrated circuit via a first connection point. The application-specific integrated circuit is configurable via the first connection point and the measurement signal from the second sensor element can be read out via the first connection point.
1. A sensor system ( 1 ) comprising:
an application-specific integrated circuit ( 4 ) having:
(a) at least one air mass flow sensor element ( 2 ) configured to measure an air mass flow, and
(b) further electronic circuits ( 5 ), including electronic memory elements ( 16 ); and
a temperature sensor element ( 3 ) configured to measure a temperature of the air mass flow, the temperature sensor element ( 3 ) being arranged separately and outside the application-specific integrated circuit ( 4 ), the temperature sensor element ( 3 ) being electrically connected to the application-specific integrated circuit ( 4 ) via a first connection point ( 6 ),
wherein the application-specific integrated circuit ( 4 ) is configured such that:
during a configuration of the application-specific integrated circuit ( 4 ), a configuration signal ( 8 ) is transmitted to the application-specific integrated circuit ( 4 ) via the first connection point ( 6 ) to write data relating to a specific application to effect programming of the electronic memory elements ( 16 ); and
upon conclusion of the programming of the application-specific integrated circuit ( 4 ) via the first connection point ( 6 ), the application-specific integrated circuit ( 4 ) is configured to read a measurement signal ( 10 ) from the temperature sensor element ( 3 ) via the first connection point ( 6 ).
2. The sensor system ( 1 ) as claimed in claim 1 , wherein the application-specific integrated circuit ( 4 ) with the air mass flow sensor element ( 2 ) and the further electronic circuits ( 5 ) is a microelectromechanical system.
3. The sensor system ( 1 ) as claimed in claim 1 , further comprising at least one analog-to-digital converter ( 11 ) arranged on the application-specific integrated circuit ( 4 ).
4. The sensor system ( 1 ) as claimed in claim 1 , further comprising a moisture sensor element ( 14 ) configured to sense moisture.
5. The sensor system ( 1 ) as claimed in claim 1 , further comprising an integrated pressure sensor element ( 17 ).