The newly launched Si Heat-Flux Sensor (Si-HFS) project aims to realize the smallest possible, low-cost sensor elements that are capable of detecting the physical quantity temperature not only as a precise absolute value, but also highly dynamically as a vector quantity. The integration of innovative high-resolution temperature sensors with a multi-dimensional characteristic field enables comprehensive functions for self-diagnosis, which is becoming increasingly important, especially in industrial applications.
Most of the heat flow sensors available on the market operate according to the Seebeck effect. The sensor to be developed in the project will have temperature diodes connected in series as a functional unit. This technology will have a larger signal swing, be considerably less expensive and also be able to measure absolute temperature. Common heat flow sensors are used, for example, in conventional heat cost allocators. The novel heat flow sensors can not only supplement or replace conventional primary transducers for determining heat energy quantities. They also find a new application for the precise measurement of surface temperatures.
The research and development work described is funded by the German Federal Ministry of Economic Affairs and Climate Action (BMWK) in the research project “Si Heat-Flux Sensor” (Si-HFS).
Funding code: 49MF220105