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pro vyhledávání: '"Ju, Xiaotao"'
Energy-efficient routing sensing technology of wireless sensor networks based on Internet of Things.
Publikováno v:
Journal of High Speed Networks. 2021, Vol. 27 Issue 3, p225-235. 11p.
Publikováno v:
Sensors & Transducers, Vol 170, Iss 5, Pp 60-66 (2014)
Aiming at the problem that echo signal is hard to recognize caused by ultrasonic energy’s overquick dispersion and attenuation, a kind of ultrasonic horn is designed. According to the acoustic theory analysis, the ultrasonic horn can increase its r