9762 papers found
The most common neural network type is a multilayer perceptron (MLP) network. Even a relatively simple MLP-network requires usually high computational accuracy and efficiency. The usual types of activation functions are not necessarily applicable for a neural network algorithm used in microcontrollers. For this purpose a new type of activation function is introduced.
The paper presents a theoretical and practical study related with the implementation of artificial intelligence for the enhancement of water quality measurement systems accuracy. The measurement parameters related to water quality (WQ), considered in the present work, are essentially the pH and the conductivity (C). The fusion of sensor information is performed using two different architectures of the Artificial Neural Networks. Those architectures are compared in terms of the implementation, complexity of associated digital signal processing and accuracy enhancement. An additional measure...
It is important to detect the leakage of the gas to be flammable or poisonous from the cracks in pipes of petroleum refining plants or chemical plants. We examined the application of modular neural networks to the acoustic diagnosis technique for the leakage sound. The modular neural network has the ability to adapt its structure according to the environment. Experiments were performed for an artificial gas leakage device with various experimental conditions to imitate the change of environment for a long term. The discrimination accuracy with the proposed network was observed to be about...
The semantic redundancy decreasing sources totality self-programmable system is analyzed. The source flexible sampling program changing threshold value and the channel capacity demand equations founded. The software packet system realization was prepared, the operating simulation was made.
This paper presents a new modelisation of smart sensors based on a representation of the sensor by it‘s INternal Operating Modes (INOMs) and by services uses or it proposes. Sensor INOM relies on internal states of the sensor and is characterized by the set of sensor services that can be activated when the mode is active. The software of the sensor is automatically derived from the modelisation. This approach permits sensor designer to use their skill on the transducer and on the sensor service definition instead of losing time on the writing of the sensor software.
A new extremity TLD system has been developed and tested that provides for user convenience and automated processing while meeting various accreditation requirements. The design is a result of successful collaboration among organisational entities in different countries and included research centres, users, and the manufacturer. The primary consideration was to meet the needs of the medical market, without losing sight of the needs of research laboratories and power plants. This dosimetry system design provides various detector designs based on the need to measure photons or betas. Beyond...
In this paper a short introduction to the radio coverage system for railway tunnels realised on the line Prato–Bologna, is presented. GSM coverage measurements have been conducted on three different installations. For a better results interpretation the employed measurement system has been described. Moreover measurement execution and physic characteristics of the analysed tunnels are shown. Finally results are discussed and some conclusions are drawn.
In the supervision of buildings and structures, to guarantee the support strength and to detect structural damage due to ageing and varied utilisation at an early stage and at low cost, special measuring instruments are increasingly being developed. An important tool in the measuring techniques applied to determine loads and detect damage are strain gauge-based microsensors. These can protect the integrated precision resistance foils from the adverse ambient conditions prevailing in the vicinity of the structure and can easily be attached to the structure subject to supervision....
Digital Shearography, a laser interferometric technique in conjunction with the digital image processing, has the potential for vibration analysis due to its simple optical system and insensitivy against small rigid body motions. This paper will focus on its recent developments for vibration analysis and for nondestructive testing (NDT) by dynamic (harmonic) excitation. With the introduction of real time observation using automatically refreshing reference frame, both small and large rigid body motions are greatly suppressed. The development of a smaller and more mobile measuring device in...
The influence of Tuned Liquid Column Dampers (TLCDs) on the dynamic response of structures is investigated experimentally. The experimental models consist of a small-scale plane one-storey shear frame, made of aluminum, with a TLCD attached to its rigid beam. TLCDs are rigidly constructed of plastic tubes and filled with liquid (water). Performing free vibration experiments the geometry of the TLCD container and length of the liquid in the TLCD are varied. In the second series of experiments investigations with time-harmonic loading (frequency sweeps) are performed, where an electromagnetic...