Company Filing History:
1 out of 38 
1 out of 1 Years Active: 2001-2002
Title: The Innovations of Stefan Hegnauer
Introduction
Stefan Hegnauer is a notable inventor based in Dübendorf, Switzerland. He has made significant contributions to the field of motion detection and infrared technology. With a total of 2 patents, his work showcases innovative solutions that enhance security and detection systems.
Latest Patents
One of Hegnauer's latest patents is a motion detector based on the Doppler principle. This device utilizes a microwave module to emit a microwave signal containing at least two frequencies into a monitored area. It receives the reflected radiation and generates first and second Doppler signals, which have a phase difference proportional to the distance of an object. This technology allows for the determination of the relative size and direction of travel of objects reflecting the microwave signal.
Another significant patent is the passive infrared detector. This device features an entrance window for infrared radiation and an infrared sensor with an evaluation circuit. It includes an anti-masking device that detects optical changes in front of the detector. The signals from this device are evaluated in two channels, enhancing the detector's immunity to false alarms and increasing its sensitivity.
Career Highlights
Stefan Hegnauer has worked with prominent companies such as Siemens Building Technologies AG and Siemens Building Technologies, AG Cerberus Division. His experience in these organizations has contributed to his expertise in developing advanced detection technologies.
Collaborations
Hegnauer has collaborated with notable individuals in his field, including Hansjürg Mahler and Roland Küng. These partnerships have likely fostered innovation and the exchange of ideas in the realm of technology.
Conclusion
Stefan Hegnauer's contributions to motion detection and infrared technology demonstrate his commitment to innovation. His patents reflect a deep understanding of the principles of detection and security, making him a valuable figure in the field.