Wireless Transmission of Friedlander‐Type Signals for the Dynamic Measurement of Blast Pressure

During explosive detonation or air blast experiments, long cables are commonly used for transmitting signals delivered by pressure sensors to the safe place of the acquisition unit. While constant efforts are undertaken for enlarging the bandwidth of sensors in order to improve the measurement preci...

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Bibliographic Details
Published in:Propellants, explosives, pyrotechnics explosives, pyrotechnics, 2021-04, Vol.46 (4), p.563-571
Main Authors: Chalnot, Mathieu, Coustou, Anthony, Aubert, Hervé, Pons, Patrick, Lavayssière, Maylis, Lefrançois, Alexandre, Luc, Jérôme
Format: Article
Language:English
Subjects:
Aerial explosions
Air blast
Bandwidths
Blasting (explosive)
Cables
Detonation
Dynamic pressure measurement
Electromagnetism
Engineering Sciences
Explosive
Fireballs
Micro and nanotechnologies
Microelectronics
Peak pressure
Pressure sensors
Radiofrequency
Sensors
Ultrawideband
Wireless transmission
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Summary:During explosive detonation or air blast experiments, long cables are commonly used for transmitting signals delivered by pressure sensors to the safe place of the acquisition unit. While constant efforts are undertaken for enlarging the bandwidth of sensors in order to improve the measurement precision of the peak pressure, the limitations of the wired transmission of blast pressure signals delivered by these sensors are not addressed. We discuss here such limitations and propose a wireless new solution for the dynamic measurement of Friedlander‐type signals delivered by ultra‐wideband sensors (>10MHz ). Contrary to the wired solution, the distance between the sensor and the acquisition unit does not limit the measurement bandwidth of the wireless setup. Experimental results are reported for validation purposes and pave the way of the dynamic measurement of blast pressure variations occurring at the heart of the fireball generated during explosions.
ISSN:0721-3115
1521-4087
DOI:10.1002/prep.202000163