Actually, quasidigital sensors are become very important in noisy environments. In order to learn how quasidigital sensor works, the target of this paper is to design a data acquisition system based on a computer and a PCI (NI Pci-6221) data acquisition board to acquire data from SMT160 quasidigital temperature sensor using the ELVIS platform and Labview as a language programming software. In addition the Universal Transducer Interface from Smartec will be evaluated as an analog to frequency converter for resistive and capacitive sensors. The objective of this present paper is to study and to realize a practical application that can be called a revolution in the sensor application because it doesn’t need any additional elements or any signal acquisition: UTI (Universal Transducer Interface).

This paper is focused on how to implement a nonlinear voltage divider used in the electrical power network disturbances measurement system preconditioning circuit. The voltages acquired from the electrical power network have amplitudes between 0.2 kV and 10 kV, values which are very high for an acquisition board. These amplitudes must be reduced to the values accepted by the acquisition boards: ±10V. If the signal from the electrical power network is divided with a linear voltage divider, the smaller variations around the nominal values of the voltage on the electrical power network can not be detected. This is the reason to prefer the use of a nonlinear voltage divider.

Sugestive for this paper is the students’ expression that says „the first 6 years are difficult until you reach the third school year”. And the rhymes are not very far from the truth. In this moment the curriculum sets for the first two years only fundamental courses as: math, physics, mechanics, electronics, computer programming. In the last two or three years there are special courses, that are meant to transform the good theoretical base student into an inventive and skilful engineer. The partition of the education process in two separate successive stages: base preparation and technical education seams fair, theoretically speaking. Unfortunately our experience has shown that things aren’t going the right way because the lack of a professional horizon. Theoretical base preparation, time and energy consumer, barely allows the student to dream of technical accomplishments and to fulfill their hopes. Students carry on the first stage of preparation without foreseeing the MP3 encoder in the study of Fast Fourier Transform, a dancing robot control in the study of differential equations or an environment parameters monitoring system in thermodynamics. More than that, an important percent of the students is losing the enthusiasm and sometimes the belief that they will achieve what they have hoped.

The way of measurement of low frequency electromagnetic field intensity is presented. Computer measurement system is described, which can be used for RMS value isotropic measurement and recording of electric and magnetic components of electromagnetic field time waveforms. Later the off-line time-frequency analysis of the recorded signals can be done. Selected results of measurements made onboard Gdynia Maritime University research-training vessel are performed.

In this article we describe the remote driving, via Internet, of the ultrasound sensor that can work in two different ways, for locating and sizing isolated scatterers and for ultrasonic ranging by real-time digital phase measurements. The sensor is located in the laboratory of Electrical Measurements of the Technical University of Iasi, Romania, while the remote control is located in the BioMechatronics Laboratory of the University of Magna Græcia at Catanzaro, Italy.