Eduard Franti

Simulation, design and microfabrication of multichannel microprobe for bioelectrical signals recording

The extracellular potential simultaneous recording permits the investigation of the central nervous activity. The paper presents the design and manufacturing steps of a five electrodes microprobe for recording the electrical activity of neural cells and tissues integrated on the same chip with the electronics. The specific fabrication processes of the integrated microprobe are presented. An implantable neural microprobe is going to be developed to enable the correlation between electrical activity in the human nervous system and externally psychoelectrical stimuli. The electronics accomplish the separation and reduction of the biological noise recording.

Solar Panel Energetic Efficiency Optimization Method, based on an Specific Detector and Orientation Microsystem

The increase of the solar cells efficiency implies high technological and scientific efforts. A significant efficiency increase of the photovoltaic panels can be also obtained by optimal exposure of the panels to the sunlight, using automatic solar trackers. For wide scale use of these control systems, it is very important to find low cost and reliable solutions. In the current paper we propose a low cost tracking procedure, based on differential method and special microdetector. This solution permits a simple solar panels return from west to the east, within the angle regulation range of 0-180deg.

Virtual environment for robots interfaces design and testing

This paper refers to the implementation of a virtual environment for the robot interfaces testing. This software environment is very useful because, comparing to the experiments with real robots, it allow the testing and evaluation of different types of interfaces and different working environments with diverse configurations. A very important facility of this interactive software environment is the fact that the designers of the robots sensors and interfaces are able to work in parallel to design test, optimize and realize different control devices for the robot

Design of cellular automata hardware for cryptographic applications

This work presents the hardware architecture of a cryptosystem based on cellular automata model (CA). Main cryptographic schemes with CA are briefly introduced. The hardware version refers to linear class 3 CA. The project for the cellular automata, main block of the encryption and decryption schemes, is presented. The scheme may be used for robust, low-cost and efficient cryptosystems for specific applications.

Implementation of totalistic cellular automata

In this paper we present a low complexity cellular automata that can be easily realised in hardware version. This version of cellular automata implements the subset of totalistic local rules. The paper describes the structure of a typical cell running totalistic functions and its behaviour, and also the design of the global cellular automata.

A VLSI implementation of cellular automata randomizers

The paper presents the general design of integrated cellular automata randomizers. An important aim of the paper is to highlight the specificity of pseudo-random sequence generation between other cellular automata applications and to present the structures and types of output of cellular automata-based pseudo-random sequence generator. The paper also presents a new model of generalized cellular automata, that includes a supplementary memory layer for improving the statistical properties of the random signal and sequence generator. One important aspect of the dynamics of cellular automata is that in many cases there are no means to predict the behavior of the system (excepting, of course, to run the system itself). Therefore, in these cases-which are also the cases most appropriate for our application-the experiment is the only solution to guarantee the quality of the generator. The VLSI implementation of cellular automata randomizers is dedicated first of all for testing the properties of these randomizers.

Hardware version for two-dimensional cellular automata

In this paper we propose a hardware version for two-dimensional cellular automata. Since cellular automata are parallel systems containing a large number of simple processing elements, their hardware version is necessary for their real-time study and applications. A cellular automata chip is described both at the architectural and cell level. The paper outlines the main functions of the cellular automata chip and describes how they operate. We also present some quantitative aspects that determine the chip dimension. The chip can be succesfully used for experiments with large CA implying long-time evolution.

CRIPTOCEL: design of cellular automata based cipher schemes

The paper presents CRIPTOCEL, a complex project that is aimed at the development and design of cellular-automata based cryptographic systems. Cryptography is a field of major scientific and technical interest nowadays, mainly because of the increased security demands of different communication systems. The novelty and the main interest in the CRIPTOCEL project is the orientation towards a hardware implementation. A special software has been developed for the analysis of different encryption/decryption strategies with cellular automata. Among the various strategies and algorithms studied, the best were selected for hardware implementation. The main issues of cellular automata hardware design are also discussed for the selected cryptosystems. The result is a VLSI project for a fast, cheap, efficient and versatile cryptographic chip.

Artificial muscle for locomotory prosthesis

One of the hopes, of the scientific frontier domains tangent with the artificial intelligence is and will probably remain for a long time, the realization of the artificial prosthesis and organs which could compensate for the people the incurable consequences of some accidents or severe diseases. From all the types of prosthesis existent on the market in the present, only 1% have implemented electronic devices for the controlling and command of the movements and these only for the big dimensions segments (elements of the elbow articulation, knee etc). The system which is presented in this paper allow a personalized design of the prothesis according to the characteristics and the specific needs of the patient. This system allowed the authors to design, test and implement two intelligent prothesis for legs which are also presented in this paper. The intelligent structure of these prothesis include pressure sensors, position sensors and microcontrollers. The mechanical structure of these prothesis was realized from articulated segments of composite and metallic materials and for the artificial muscular system was used pneumatic muscles.

Computing system processing of GPR sounding profiles

The paper discuss the possible applications of computing systems in processing of GPR sounding profiles, viewed as signal and/or image processing. GPR (ground penetrating radar) is a non-invasive and non-destructive technique of subsurface investigation, similar to other radar-type detection methods. The sounding profile as a result of GPR data acquisition, is a bidimensional image, most usual in gray scale, that often requires preliminary processing in order to reveal significant information. Different types of processing like background removal and various filtering are discussed, and the possibility of neural processing is analyzed for different situations.