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Aiming at the common problems of weak controllability of damping temperature range and poor mechanical properties in damping elastomer materials. Herein, we design a polyurethane‐containing dynamic disulfide bonds and dangling chains to address this dilemma. The as‐prepared polyurethane exhibits an unprecedented damping range of 182°C (−62 to 120°C), and the tensile strength reaches 6.8 MPa, which...
In order to further improve the spectrum resource detection probability and increase the spectrum utilization rate in underwater wireless communication systems, this paper designs a novel multi-layer cooperative spectrum sensing algorithm based on compressed sensing, which uses compressed sensing technology to estimate the spectrum to reduce the sampling rate and the overhead of sonar signals. This...
ZigBee technology is considered as one of the most promising technologies in the field of alternative wired monitor and control network. The hardware platform applies the CC2430 chip which supports IEEE 802.15.4 protocol as RF transceiver controlling chip. The system works in the Universal 2.4 GHz band. The high-performance ARM9 processor S3C2410a is used as both protocol controller and data acquisition...
In the framework of the hardware platform, CC2420 chip which supports IEEE 802.15.4 protocol is used as RF transceiver controlling chip. 32-bit high-performance ARM processor LPC2138 is used as both protocol controller and data acquisition. Through the OP to improve the transmitting power and receiving sensitivity. The system adapts to the Universal 2.4 GHz band and it has a high transfer rate and...
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