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Industrial Internet of Things (loT) brings more innovation space to the construction machinery industry. However, currently the application of IoT in vibratory roller is mainly reflected on the remote control of asset security and the basic data monitoring of equipment operation. In order to improve the intelligent level of vibratory roller and promote intelligent compaction on road construction,...
Wireless Video Sensor Networks (WVSNs) have been widely proposed for monitoring spatial environments. Dissimilar from traditional Wireless Sensor Networks (WSNs) where nodes such as thermal and light sensors are o.en considered in 2D and with omnidirectional sensing ranges, the sensing range of a video sensor in WVSNs is deemed as directional and usually cognized as a rectangular pyramid shape in...
A passive (power-less), bending type MEMS DC current sensor to satisfy the increasing needs of DC power supply for monitoring the electricity consumption by either one-wire or two-wire appliance cord was proposed in our past work (DTIP 2011). A MEMS-scale prototype DC sensor, comprised of 5 parallel PZT plates, was then micro-fabricated for preliminarily examination (DTIP 2012). A novel oscillating...
In this paper, an offline perching location selection (from roof-tops) algorithm is developed for quadrotor UAVs to monitor a target, being either a point of interest (POI) or a face of interest (FOI). The selection algorithm is carried out in two steps, preliminary selection and precise selection. In the preliminary selection stage, geometric constraints, including UAV dimension, camera range, roof...
A bending type MEMS DC current sensor to satisfy the increasing needs of DC power supply for monitoring the electricity consumption by either one-wire or two-wire appliance cord was proposed in DTIP 2011. A linear relationship between the peak value of the impulsive output voltage and the DC current was obtained based on a macro-scale prototype device. In DTIP 2013, an oscillating type MEMS DC current...
A passive (power-less), bending type MEMS DC current sensor to satisfy the increasing needs of DC power supply for monitoring the electricity consumption by either one-wire or two-wire appliance cord was proposed in our past work (DTIP 2011). Recently, a MEMS-scale prototype DC sensor, comprised of 5 parallel PZT plates, was micro-fabricated for preliminarily examination (DTIP 2012). Different from...
A ring-shaped piezoelectric resonator was proposed for health monitoring. The proposed resonator is believed to be experienced several energy loss mechanisms, when used in air or liquid circumstance. Actually, the quality factor of film bulk acoustic resonator in liquid might be decreased to 5% of that in air. So, it is necessary to accomplish suitable structural design and select proper vibration...
A passive (power-less), non-contact MEMS DC electric current sensor to satisfy the increasing needs of DC power supply for monitoring the electricity consumption by either one-wire or two-wire appliance cord was proposed in our past work (DTIP 2011). In present study however, a MEMS-scale prototype DC sensor, comprised of 5 parallel PZT plates, was micro-fabricated for preliminarily examination. A...
Using the double-power law for concrete creep, the strain of septi-slab is calculated. Experiment data measured by fiber Bragg grating sensors agree well with the calculated results, and the calculated results taking into account the earlyage creep are better in agreement with the measured data. Creep has very important effects on earlyage concrete, and the creep of earlyage concrete should be considered...
Dynamic voltage and frequency scaling (DVFS) is an effective method for controlling energy dissipation of embedded systems. However, recent researches have illustrated that DVFS techniques have compromising effects on the system reliability. Our analysis results show that, ignoring the effects of voltage scaling on fault rate could considerably decrease the system reliability. Therefore, we use the...
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