Peter Sevcík

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This paper discusses supercapacitor based power unit for event-driven wireless sensor network node. In such nodes, most of the energy is consumed when transmitting or receiving data. Sleep-wake scheduling mechanism is an effective way how to prolong node's lifetime. However, this mechanism can result in delays because a transmitting node has to wait until(More)
This paper presents implementation of one pulse coupled neural network (PCNN) neuron into Virtex 4 FPGA device on ML 403 development board. The implementation consists of three main units: Computing unit (CU), convolution computing unit (CCU) and MicroBlaze soft microprocessor. Neuron works with fixed point arithmetic, and is designed with the accent to(More)
Indoor environment is from the point of the wireless communication an extremely hostile environment. Despite this fact, wireless sensor network applications in the indoor environment are very common. Having signal propagation in a real environment, without considering interferences from other sources, we meet (not only indoors) four basic phenomenons -(More)
Global warming is big issue of this time. It is caused by producing emissions, mainly carbon dioxide. Many organizations tries to establish restrictions to limit CO<sub>2</sub> emissions. Our aim is to monitor underground parking lots and detect level of carbon dioxide using wireless sensor network. Gained results are drawn in the map of pollution of(More)
Global warming is big issue of this time. It is caused by producing emissions, mainly carbon dioxide. Many organizations tries to establish restrictions to limit CO2 emissions. Our aim is to monitor underground parking lots and detect level of carbon dioxide using wireless sensor network. Gained results are drawn in the map of pollution of monitored area.