Blog topic
Sensors that power themselves, report without radio and work on freight wagons.
4 articles
The VCD4.3 grades wheel flats and bearing faults on a freight wagon with no battery and no radio. The design decisions behind it, from the classifier to the capacitor bank, and what is still open.
Clemens SaurA sensor that writes its result into a passive RFID tag can be read without spending its own energy on a radio. How dual-interface tags work, UHF versus NFC, and what to watch in a design.
Clemens SaurWayside load detectors, microphones, cameras and on-board axle box sensors all find wheel flats. They differ in coverage, timing and how well they grade severity. A comparison for rail engineers.
Clemens SaurA practical engineering guide to vibration energy harvesting for condition monitoring sensors: what the physics allows, how to condition the power and how to design an energy budget that closes.
Clemens SaurNext step
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