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This paper presents a versatile implementation of a reconfigurable module for acquisition and synthesis of modulated signals that are specific to the modern communication equipments. The hardware structure of the system is elaborated mainly around the TDA 8702 high speed video digital-to-analog converter and ADC 0820 analog-to-digital converter, both connected in a configuration that is controlled...
This paper presents an enhanced conditioning and transmission unit aimed for interfacing resistive bridge sensors with remote data acquisition and control systems. The proposed module uses a simple but reliable communication technique based on a combination between frequency and pulse width modulations. This design, based on two transmission methods, ensures the multiplexing on a single carrier of...
In this paper is presented a new approach for implementing a versatile temperature control and monitoring system for thermal enclosures based on Peltier thermoelectric elements. The system is intended to be used for temperature testing of equipped or unequipped electronic printed circuit boards (PCB). These types of tests regarding thermal aging and endurance are very important for verifying the long...
This paper presents an acquisition system for sound recording, typical spectral component identification and extraction of particular instruments from a soundtrack, based on each instrument's spectral components. This system is also capable of sound reproduction (playback) and its main feature consists of minimizing the delay between the recorded sound and the playback sound below 100ms. To achieve...
In this paper are presented the results regarding the implementation of a communication interface dedicated for conditioning and remote transmission of measurement signals acquired from sound and vibration sensors. The interface contains two parts, an analog section, responsible with long distance signal transmission and a digital section that realize demodulation and analog-to-digital conversion...
This paper presents an application for remote control of a mobile robot with XBEE wireless communication. The control of the mobile robot is realized by a PC within a software interface or by using a user mobile remote control. The application is implemented in LabVIEW and can be used for robot control and robot movement tracking.
In this paper are presented the results regarding the design and the implementation of a efficient delta encoder that is intended to be used for conditioning of signals from analogue sensors. In addition is proposed a dedicate circuit architecture for transmission of digitally encoded signals from sensors to remote measurement systems using a very reliable communication media that is represented by...
In this paper are presented the results regarding the implementation and testing of a novel type of remote control based on the data transmission facilities offered by the GSM network infrastructure and the processing power achieved by new generation of microcontrollers. The system is intended to be used in the development of complex distributed control applications that are specific to various automated...
This article presents a “smart sound sensor” solution. More specifically it is a system on a chip capable of extracting sound patterns from an input signal captured by a microphone, patterns that correspond to certain musical instruments. The aim is to identify sounds like: voices, ambient sounds or musical sounds. Such applications generally involve the presence of a computer that analyzes offline...
In this article is presented the implementation of a new type of reconfigurable signal generator and simulator used for testing digital transmission circuits that requires complex modulated waveforms. In our experiments we choose as an example the quadrature amplitude modulation or quadrature phase shift keying (QAM/QPSK) signals. The proposed solution is based on a high-speed NI-USB-6251Mdata acquisition...
This paper presents an application used in educational laboratory for multiple waveform measurement and display, for analysing of the operation of electronically circuits. It was implemented as virtual instrument in LabVIEW and uses a data acquisition card for electrical signals acquisition. The application can be used in educational laboratory for multiple signals measurement, record and time correlated...
This paper presents an application for generating of all the signals in case of digital televisions corresponding to standard colour bar patterns, from primary RGB signals to YCbCr colour space digital signals. It was implemented in LabVIEW and can represents D1 and D2 format for DTV signals on 8 and 10 bits resolution. The application can be used for DTV signals teaching and analysing in case of...
The Internet of Things era is making hardware projects more accessible than ever to hobby and beginner users. As many of them work on their projects from home, there is a growing need for accessible tools, or even tools that they can build themselves for later user in other hardware projects. The main purpose of this paper is to present an open source solution for a portable oscilloscope, customized...
This article presents a solution for tracking a mobile system using an artificial neural network. The mobile system collects data from the environment using an ultrasonic transmitter and receiver then data is processing using a binary artificial neural network. Some templates have been pre-loaded into the system to avoid blockages or additional routes. The solution is implemented on a SOC manufactured...
In this paper the authors propose a solution in which an intelligent algorithm - genetic algorithm in our case - is used to generate commands for a robot in real time, so that the robot can determine the optimal moves considering several aspects: route tracking and low power consumption. Genetic algorithms are intelligent solutions for multi-criteria optimization and using them to find solutions to...
The system presented in this paper consists of an image acquisition module from a video camera, an image processing module, which performs conversion to monochrome format, and a neural network that takes the acquired images and performs the extraction of patterns from them. The system proposed by the authors is used for recognizing the orientation of objects in real time by analyzing images from a...
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