Jakovenko J. – TechConnect Briefs

3D Electrostatic Energy Harvester

Janicek V., Husak M., Formanek J., Jakovenko J., FEE CTU in Prague, CZ

This paper discusses the design, optimization, simulation and fabrication of 3D electrostatic MEMS energy harvester. It is one part of self-powered microsystem. It is able to work in all 3 axis which increases the efficiency. [...]

Simple vertical velocity measurement system for different use

Husak M., Jakovenko J., Czech Technical University in Prague, Faculty of Electrical Engineering, CZ

The measurement of vertical velocity is necessary for different use. The solutions are based on principle of evaluating the change of an atmospheric pressure. The dependence which evaluates the vertical velocity is derived from the [...]

Wireless SensorSystem with Bidirectional Communications

Husak M., Boura A., Jakovenko J., Czech Technical University in Prague, CZ

The system contains units: wireless, control, actuator, software equipment. RF wireless unit ensures wireless communication between control unit and sensors as well as wireless switch unit. The control unit controls system operation, i.e. communication transfer, [...]

One-chip MOS Structure for Temperature Flow Sensor

Husak M., Boura A., Jakovenko J., Czech Technical University in Prague, CZ

There is presented a one-chip MOS structure of anemometric sensor system in the paper. The geometric arrangement of temperature sensors allows measurement of temperature gradient. Temperature gradient allows computation of direction of air flow over [...]

Pressure sensor data processing for vertical velocity measurement

Husak M., Jakovenko J., Stanislav L., Czech Technical University in Prague, CZ

There are design and realization of a sensor system for vertical velocity measurement using pressure sensor in the paper. Problem of nonlinearity due to the exponential function of air pressure versus altitude is discussed in [...]

MEMS and NEMS research for education

Husak M., Jakovenko J., Czech Technical University in Prague, CZ

The paper describes methods of active involvement of students in research work and application of research work results in educational process. Individual tasks are parts of solutions of large research projects. Individual work contributes to [...]

Multisensor Network for Distance Data Pick-up

Husak M., Jakovenko J., Vitek T., Czech Technical University in Prague, CZ

The core of the paper describes a multisensor system for measurement and distance data transfer. The realized system for measurement of air temperature, pressure and humidity is described as a example. Eight physical quantities can [...]

Micromechanical GaAs Thermal Convertor for Gas Sensors

Jakovenko J., Lalinsky T., Drzík M., Vanko G., Czech Technical University in Prague, Faculty of Electrical Engineering, CZ

This paper discusses design, simulation and fabrication of new Micromechanical Thermal Converters (MTCs) based on GaAs developed for Gas sensors. GaAs MTCs seem to be very attractive for design of thermally based MEMS sensor devices. [...]

Design and Characterization of new GaAs Micromechanical Thermal Converter developed for Microwave Power Sensor

Jakovenko J., Husak M., Lalinsky T., Czech Technical University in Prague, Faculty of Electrical Engineering, CZ

In this report we demonstrate the design of new GaAs based Micromechanical thermal converter (MTC) that creates heart of the RF power sensor microsystem. Transmitted power is the main quantity measured in RF systems. The [...]

Strong and Weak Inversion Mode of MOS in the Design of Direction Sensitivity Matrix

Husak M., Boura A., Jakovenko J., Czech Technical University in Prague, CZ

In the article there is presented a new arrangement of a temperature sensor system for air velocity and direction measurement. The system utilizes temperature dependence of the current through the channel of MOS structure. The [...]