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A wireless sensing network Bluetooth enabled was designed and implemented for continuous monitoring of indoor humidity and temperature conditions as well as to detect pollutant gases and vapors. The novelty of the work is related to the development of an embedded software using Java2ME technology for a smart phone that materializes a user friendly HMI. Two mobile software modules assure sensor nodes...
In order to correct non-linearities due to high power amplifiers (HPA) operating near saturation in telecommunication transceivers, a new adaptative predistortion system based on neural networks (NNs) was developed. For size, consumption and bandwidth purposes, the multi-layer perceptron (MLP) type NNs were implemented in a 0.6mum CMOS ASIC. The NNs parameters are updated with a computer as a function...
Multi-dimensional packet classification is often the performance bottleneck for network devices. For low-cost high performance embedded networking applications, the best solution could be doing packet classification by specially designed hardware which can effectively release the burden of system CPU. We have realized a compact FPGA-based packet classification coprocessor in an embedded system using...
Modern development of software has allowed us to solve complex and non-linear control systems. Software such as MATLAB, MAPLE, etc allows control engineers to design their systems easily through graphical programming. However, implementation of a software-based control design on hardware such as FPGA or DSP are met with a difficult challenge as hardware constraints tend to limit the performance or...
Some further studies on a hybrid test vector compression technique for VLSI circuits are presented in this paper. In the method proposed herein, the test vectors are first compacted in a hybrid fashion; next, these compressed test vectors are downloaded in the on-chip memory. The decompression software is also loaded in the memory along with test data. The decompression software then decodes the compressed...
In this paper we design and implement a surveillance system based on an embedded system with multiple Pyroelectric Infrared sensors (PIR) to enhance the reliability. The sensing reliability of a PIR sensor decreases when the distance from the object has increased or the ambient temperature has risen. Our design integrates multiple sensors to construct a sensor group and count their states by using...
An Electromagnetic Tomography (EMT) prototype system based on integrated impedance analyzer is proposed and developed in this paper. In the prototype system the excitation signal generation and measurement signal demodulation are both realized by using an integrated impedance analyzer IC controlled by an embedded microcontroller. The sensor is constructed with a parallel excitation layer, which is...
Epilepsy is a neurological disorder, which sometimes cannot be successfully treated. We propose a real-time closed-loop monitoring and controlling device for epileptic seizure detection and suppression. This wireless-networked embedded device includes signal conditioning circuitry, a stimulator, and a microcontroller with a wireless transceiver. A TI CC2430 receives the conditioned EEG signals and...
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