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In order to solve the problems of limited energy and noisy channel in Wireless visual sensor networks, a image coding algorithm of separated sub-tree based on no list set partitioning in hierarchical trees and a segment transmission scheme are proposed in this paper. Each sub-tree is coded independently to control error propagation, and compressed bit(More)
Adaptive electrical capacitance tomography can improve the image resolution with more flexible control in sensitivity map which become a new research direction for three dimensional capacitance imaging. However, the conventional computation of sensitivity map is time-consuming, a fast approach based on voltage distribution was proposed to solve this(More)
In order to overcome the disadvantages of poor portability and insufficient multifunctionality in traditional human health parameter measurement, a portable multi-parameter embedded Electroencephalogram (EEG), Electrocardiogram (ECG) and bioelectrical impedance (BEI) measuring system based on BMD101, TGAM module, AD5933, STM32 and wireless Bluetooth(More)
In order to overcome the disadvantages of poor portability and insufficient multifunctionality in traditional human health parameter measurement, a portable multi-parameter embedded electroencephalogram (EEG), electrocardiogram (ECG), and bioelectrical impedance (BEI) measuring system based on chip BMD101, the TGAM module, chip AD5933, STM32, and wireless(More)
A method of image reconstruction of electrical capacitance tomography applying to unknown permittivity object in two-phase flows is studied in the paper. An one-simulation-calibration method is provided, which implements simulation calibration when the pipe fills with high and low permittivity medium respectively, and combines with iterative algorithm to(More)
An Electrical capacitance tomography (ECT) system include its sensor, measuring circuit and image reconstruction algorithm is described in this paper. An AC-based capacitance circuit is introduced because it is stray-immune and small capacitance can be measured. The 3-D image is reconstructed from a set of 2-D images which are reconstructed from an(More)
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