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The current paper represents a portable battery powered system which is capable to measure and analyze the data from different type of sensor data like humidity, air pollution gases, dust, smoke, etc. and send it via Bluetooth or GSM/GPRS connection to the remote devices. It contains GPRS modem with integrated Bluetooth module, integrated chip antenna, power management module, rechargeable Li-Ion...
The current paper describes an innovative navigation system based on GPS receiver and high speed 9 DoF IMU based on MEMS inertial sensors (3D linear accelerometer and 3D magnetometer and 3D gyroscope) which accomplishes the real-time read of the navigation and inertial data and write to FLASH memory. Also the system may transmit the data by Bluetooth or GPRS modem connected externally to the remote...
The paper represents an innovative miniature 9DoF IMU system based on MEMS digital output inertial sensors which may read the linear and angular rate accelerations and the magnetic field at all three axes, the temperature up and down of the board by integrated analog and digital sensors and transmits the measured data by Bluetooth or GPRS link to the remote servers or devices. The integrated Bluetooth...
A system was developed in order to teach the basics of CMOS gate array design to bachelor degree students in electronics engineering at the Faculty of Electronics Engineering and Technology at the Technical University of Sofia. It was based upon the adaptation of a simple accessible CAD product with the goal to emulate the final stages of semi-custom integrated circuit design.
The aim of this work is therefore to analyze the thermal stability by lifetime accelerated tests for three different constructions of LED lighting fixtures. In result of studied we believe to provide information on the role of temperature in determining devices degradation, since in most of the cases high current and high temperatures acted as degradation driving forces. In order to high light the...
The following paper aims to present work done towards provoking and organizing discussion and gathering information and feedback on message boards regarding MCM design and use. In order to accomplish that, information was presented on the Internet allowing the creation of a virtual community, dedicated to discussing specific topics on MCM design and use. Through discussion it was possible to obtain...
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