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When rescue robots navigate in a rough terrain, significant vibration of the video occurs unavoidably and a video stabilization system is proposed in this paper to reduce the disturbance on the visual system of the present rescue robots. The Kalman filter is applied to estimate the motion vector of the robot and the false estimation occurrence can be thus greatly reduced by applying analysis of correlation...
Applications of wireless sensor network (WSN) have been widely developed recently. This paper represents distributed rescue robots applying the techniques of WSN to achieve remote control and monitoring through different sensing devices by integrating the ZigBee and 802.11 g. The communication channel between the rescued target and the remote host for transmitting video and voice signals through the...
In this paper, an enhanced ant colony optimization algorithm (EACOA) is proposed for the multi-objective maintenance scheduling of oil tanks. In the algorithm, tabu search is incorporated into ant colony optimization. Through a decreasing probability function, the proposed algorithm improves ant colony optimization is easy to trap in local optimum and hence the optimal solution to the scheduling problem...
A 10b 200MS/s folding ADC is implemented with a cascaded folding factor of 4x5 to reduce the number of comparators. A simple offset calibration is developed to avoid the complex calibration loops, improving the settling behavior of the ADC. After calibration, the measured ENL is enhanced from +8M.5LSB to +1.4/-1.5LSB while the SNDR performance is improved from 43.9dB to 54.1dB at input frequency of...
A series of acyclic enediynes showing significant inhibition on the growth of tumor cancer is disclosed. To investigate the structure–activity relationship, compounds 12–33 were synthesized. Among them, compound 17 showed most potent growth inhibition activity against all tumor cell lines at low concentration, such as SR (0.4μM) and MDA-MB-435 (0.8μM), and almost completely blocked cell cycle in G2/M...
A time-interleaved pipeline ADC is designed with the reconfigurable resolution and sampling rate, Fs, to accommodate different operation scenarios. The main offset and gain mismatches between four sub-ADCs are modulated to the frequency of F/2 by the reference-and opamp-sharing techniques. Fabricated in 90 nm CMOS, the 7 bit ADC has an ENOB of 6.5 at 1.1 GHz sampling rate. The I/Q ADCs totally consume...
An 11 b 800MS/S time-interleaved ADC is implemented in a 90nm CMOS process for a 10GBase-T application. A single open-loop T/H circuit using a cascode source follower achieves high resolution and conversion rate. The offset and gain mismatches are corrected by the digital background calibration. The measured DNL and INL are <0.5LSB and <1.6LSB, respectively. The measured SNDRs are 58 and 54dB...
A direct-conversion RF transceiver and digital PHY are integrated in a single 0.13mum digital CMOS chip. Designed for UWB OFDM operation as proposed by the WiMedia Alliance, the device supports both fixed and frequency-hopped modes in the band of 3.1 to 4.8GHz. The RF transceiver draws 100mA in receive mode and 70mA in transmit mode, and the complete chip occupies 17mm2
A direct-conversion UWB transceiver for mode 1 OFDM applications employs three resonant networks and three PLLs. Designed in a 0.13 /spl mu/m CMOS technology, the transceiver provides a total gain in the range of 69 to 73 dB, an NF in the range of 5.5 to 8.4 dB across three bands, and a TX P/sub 1dB/ of -10 dBm. The circuit consumes 105 mW from a 1.5 V supply.
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