A high-temperature stable SAW identification tag for a pressure sensor and a low-cost interrogation unit

摘要

Driven by the need for identifying an AVL pressure sensor inside of a combustion engine, various methods for this purpose have been examined. The solution found has to be compatible with the constraints placed by both the harsh environmental conditions acting on a sensor mounted close to the combustion chamber and the reading technique employed to monitor the data. Thus the final solution, preferably mounted inside of the pressure sensor, has to withstand shock, vibrations, high temperatures and temperature gradients, to provide a high isolation resistance and to fit into a small size bore. Furthermore, the solution has to cope with additional demands such as low-costs or minor modifications of the sensor only.