Dusan Markovic

TEDS specification for IEEE 1451.0 smart Transducer

IEEE 1451.0 standard enables independence of transducer to some degree in their functionality. TEDS represents electronic form of documents for storing all necessary data on smart transducers needed for independently executing action on the transducer. In this paper, realization of TEDS was presented on the mbed platform which was based on 32-bit ARM Cortex M3microcontroller. In paper, elements used for making TEDS structure and methods for read data from stored TEDS were described.

Concept of read data method according to IEEE 1451.0 standard using CC430F5137 microcontroller

Sensor devices are characterized by many constraints due to the nature of their use in many different environments. One of the main challenges in the development of autonomous sensing devices is the optimization of energy consumption. Therefore it is desirable to use low power microcontrollers for developing devices if it is possible also to satisfy other requirements. In addition, new trends in today technology require some intelligence of measuring devices in order to make the transducer more independent from human factors and to establish access to devices and their communication in much easier way. For this purpose standard IEEE 1451.0 was introduced, that defines common rules for smart transducers, regardless of the used equipment. This paper presents an example of data transmission in case of system based on low-power microcontroller CC430F5137 according to the smart transducer concept.

The influence of the transmission path model on reception of digital TV signals in conditions of mobile reception

Until the end of 2011. year, in Serbia will begin experimental broadcasting of digital signal second generation standard (DVB-T2) at thirteen transmitting and two repeating (gap-filler) locations. The terrestrial digital television in addition to stationary reception, is planned for mobile and portable reception. At a reception quality of signal the basic effect has model of the transmission path. This paper will be elaborated the influence of the transmission path model, which has a direct influence on the quality of mobile reception.

Test-Driven Development (TDD) in development of measure application and transducers services

Transducer services API provides the interface between the measure application and function defined by standrad IEEE 1451.0. This paper presents use Test-Driven Development (TDD) in implementation of methods of transducer services and Web application that access this services over the network. Characteristics of TDD and its benefits were presented and way of realization for one method was shown using Java and JUnit framework for run tests.

SunSpot in sevice-oriented applications

SunSpots — Java programmable devices with several built-in sensors allow the measurement and transmission of measured values between the Spots as the nodes in the network. In NetBeans development environment support to Sunspot desktop projects was developed. The theme of this paper is to expand the functionality of Sunspot desktop projects to support working with Web Services, which is not currently provided through NetBeans development environment and demonstration of SunSpots service-oriented inteoperability with Web Services.

Analysis of the prediction of the DVB-T2 pilot network signal field level in the city of Nis

This paper will analyze the coverage city of Nis with DVB-T2 signal from locations Gorica (Apelovac) and selection of protective intervals in the SFN network.

The possibility of operating analog repeaters in DVB T/T2 mode

The possibility of re-broadcasting a digital signal using existing analog repeaters? What features are most influenced by the degradation of the digital signal by existing analog repeater? Whether modification of existing analog repeaters can achieve satisfactory results in the retransmission of digital signals?