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Poprawne ukształtowanie założonego rozkładu temperatury w mikroukładzie hybrydowym jest uwarunkowane bardzo wieloma czynnikami, związanymi zarówno z procesami wymiany ciepła jak i zmiennością parametrów zastosowanych materiałów oraz przyjętą, strukturą geometryczną. Uzyskanie pola temperatury o zróżnicowanych poziomach oraz zapewnienie jego niezmienności w rożnych warunkach pracy, jest możliwe jedynie...
In paper problem of strength (reliability) determining of electronic elements and circuit on normalised disturbing signal has been formulated in theoretical and practical aspects. Ths method of strength (reliability) coefficient estimation for chosen system and its components has been proposed. The theoretical considerations were experimentally verified by analysis of the test system (dimmer of halogen...
As part of the DARPA sponsored high productivity computing systems (HPCS) program, IBM is building petaflop supercomputers that will be fast, power-efficient, and easy to program. In addition to high performance, high productivity to the end user is another prominent goal. The challenge is to develop technologies that bridge the productivity gap - the gap between the hardware complexity and the software...
The application of operational method for analysis of disturbances propagation process in frequency domain in mutual coupled path systems of planar structures has been presented in this paper. The suitable algorithms and their practical realizations in Mathcad program have been elaborated based on literature information. For verification of procedures the test circuits of conductive paths on ceramic...
The problems connected with electromagnetic couplings between mutual parallel paths in planar structures made in thick-film technology have been presented in the paper. The influence of geometrical configuration of thick-film path systems on shape of transfer function between them has been analyzed. The modification of transfer function under changes of the particular geometrical factors has been...
In this paper, we present the architecture design and implementation of a framework for automated performance bottleneck detection. The framework analyzes the time-spent distribution in the application and discovers the performance bottlenecks by using given bottleneck definitions. The user can query the application execution performance to identify performance problems. The design of the framework...
Our productivity centered performance tuning framework for HPC applications comprises of three main components: (1) a versatile source code, performance metrics, and performance data visualization and analysis graphical user interface, (2) a unique source code and binary instrumentation engine, and (3) an array of data collection facilities to gather performance data across various dimensions including...
In modern electronic microcircuits the intended and unintentional dynamic changes of the temperature (for example caused be electrical signals) are very often observed. The good knowledge about these phenomena is the basis of lifetime and reliability determination in the real-world operating conditions. The presented pulse generator is very useful in researches connected with such problems especially...
The temperature influence (especially their irregular distribution in the digital chip structure) on proper operation of the microprocessor system has been presented in the paper. As the results of non-uniform heating of silicon structure the incorrect operation of selected functional blocks of single chip microprocessor can be observed. Especially, the circuits which operation is independent on global...
Przedstawiono koncepcję budowy mikroprocesorowego detektora tlenku węgla i metanu przy wykorzystaniu komercyjnych czujników firmy Figaro (TGS2611 i TGS2442) oraz mikroprocesora AT89C2051 firmy ATMEL. Charakterystyczną cechą urządzenia jest zdolność do identyfikacji wykrytego gazu, tzn. ustalenia, czy zostało przekroczone dopuszczalne stężenie odpowiedniego gazu. Obecność gazu jest sygnalizowana światłem...
The paper presents some aspects of describing of thermal model of the thick-film microcircuits with equivalent model (based on RC elements) which is used in temperature field simulation using PSPICE program. The proposed method of temperature simulation using equivalent RC models is based on well-known Beuken theory and is much more easier and "intuitive" for designers of the electronic...
The theoretical analysis (compared with experimental investigations) of dynamic temperature states in layer microcircuits (made in LTCC or HTCC technology) has been described in the paper. Two basic models and solution procedures of analytical equations system have been presented. Furthermore their basic advantages and disadvantages have been compared together with accuracy discussion. The solution...
The complexity of heat exchange mechanisms in electronic circuits make the thermal analysis a complicated problem. In reality, only numerical calculations and specialized simulation programs can solve the systems of differential equations with very complicated boundary and initial conditions. The paper presents some aspects of describing of 3D thermal model of the thick-film multilayer structure with...
The paper presents some aspects of describing of thermal model of the thick-film microcircuits with equivalent models (based on RC elements) as well as example of the complex analysis of hybrid power controller of household equipment in PSPICE program.
The complexity of heat exchange mechanisms and difficulties in accurate determination of their coefficients make the thermal analysis a complicated problem at the beginning of the design process. In reality, only numerical calculations and specialized simulation programs can solve the systems of differential equations with very complicated boundary and initial conditions. The paper presents some aspects...
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