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This paper presents a solution to diagnosis printed circuit boards in terms of wiring crossing, based on real-time image analysis. The image is captured using an ordinary video camera (web cam) that is placed above the board while a light source is placed under. The image is processed locally in the FPGA, and bright spots which indicate board cross are isolated. Through an Ethernet interface, the...
This paper presents a system of “image sensor” for recognition and counting of shapes present in an image. Result information is provided as identified object, position relative to the lower left corner of the image and the number of objects detected in a certain type of image. In other words, the system functions as a sensor, the image is the entry and the items extracted from it represent the output...
This paper presents a method used for increasing the security of sending text messages using public text communication services like email and SMS. It uses text encryption before sending the message through email or mobile phone (SMS), so, even the message is received and viewed by another unauthorized person, it cannot be understood. The application was implemented in LabVIEW and can be used for...
This paper presents a software application for studying of the most used methods for text encryption/decryption, with utilization in teaching activities and didactical laboratories. The applications is realized using virtual instrumentation software and was designed as a didactical software platform for studying and analyze the two of the most used encryption techniques, the symmetrical and asymmetrical...
In this paper we present a system that we made for acquisition and processing of data on multiple channels (8 in total) and transmitting the remote results through the Ethernet interface. The solution chosen by us involves the system implementing in FPGA where any processes running in parallel can be described — the acquisition processes from the AD sensors and possibly data processing processes....
Cyclic distillation can bring new life in old distillation columns, by using a cyclic operation mode that leads to key benefits, such as: increased column throughput, lower energy requirements and higher separation performance. The literature reveals experimental and theoretical studies carried out so far, including several models for simulating cyclic distillation. However, the accuracy of these...
This paper presents a LabVIEW application and a hardware module used for movement detection of objects in a surveillance area (nuclear plant perimeters, frontiers, etc.) The system use as sensor a single video camera connected to the PC on the USB interface. An external module connected to the parallel interface of PC is used to drive a stepper motor that provides the proper orientation of the video...
This paper presents the results obtained in the simulation and implementation of adaptive and matched filters using the new technology of FPAA (Field Programmable Analog Arrays). The proposed filter structures are intended to be used in conditioning of signals from radiation sensors but can be also used in any application that necessitates signal extraction from noise. For the implementation of the...
This paper presents an integrated platform for studying the digital transmission method named pulse code modulation. The platform consists in an experimental board and a software model that allows the measurements of significant parameters of a codec based on this communication method together with the animated visualization of the circuits operation and typical waveforms. The modeling and simulations...
In this paper we present the research results obtained in the implementation of a radiations monitoring system based on miniature radiometers with semiconductor detectors. The domain of applications for the presented system is wide, from nuclear safety to active personal dosimetry. The basic structure of this radiation monitoring system comprises many portable dosimeter stations and a mobile dosimetry...
The correct selection of the proper transmission method that is most convenient for a particular data acquisition and measurement system represents an important issue for any application. In this paper is presented a novel implementation approach that relies on the use of optical fiber connection for data transmission between a remote data acquisition board and the PC. The improved data acquisition...
This paper presents an application for studying of analog-to-digital conversion using successive approximations principle. The application models and measures the significant parameters of SAR ADCs, together with animation of the converter operation, and draw typical waveform. These facilities make the application very useful for teaching and training students in data conversion domain. The application...
This paper presents a new approach for implementation of PID (Proportional-Integral-Derivative) controller using reconfigurable analogical circuits (FPAA-Field Programmable Analog Array) with application in temperature control in nuclear domain. Using the dynamically reconfigurable FPAA circuits, implementation of the PID controller became more easily than classical analogical design, with the possibility...
Wireless technologies represent reliable and efficient solutions for remote data acquisition, supervisory and control systems. The correct selection of the proper transmission method from the wide variety of wireless radio transmission methods and standards represents an important issue. For this reason in the firs part of this paper are presented briefly, the newest and most efficient wireless technologies...
Automatic modulation type identification is needed in many applications. The recognition of the communication system for example is done by inspecting the received signal properties like modulation type, carrier frequency, baud rate and so on. In this paper we introduce a new AMR (automatic modulation recognition) method based on time and spectral domain features of the received signal. A broad class...
In this paper we present new application of FPAA (Field Programmable Analog Array) circuits for analog signal processing from radiation sensors. We used the dynamically reconfigurable FPAA AN221E04 from Anadigm for implementation of analog circuits like programmable filters and amplifiers suitable for interfacing with radiation sensors. The introductory part of the paper contains aspects regarding...
Field programmable analogue array (FPAA) technologies can offer an analogue platform for a vast number of applications, including communication circuits requiring adaptive processing. The subject of this paper deals with the problem of generating and processing of base-band communication signals using a reconfigurable platform based on FPAA technology. In the experiments it was used AN221E04 circuit...
The works show a general processing diagram for a complex, ldquoConjunctural adaptiverdquo system and a reliability and safety estimation for a concrete nuclear dosimetric network used in Pitesti Triga research reactor.
Classification of dental caries is important for the diagnosis and treatment planning of the dental disease, which has been affecting a very large population throughout the globe. It is also helpful for conducting detailed study and investigations about the nature of the dental disease. Classification of dental diseases is decided on the basis of certain criteria, such as based on whether the lesion...
Automatic modulation recognition systems represent an interesting issue for both civilian and military applications. In this paper it is presented an original technique for automatic recognition of analog modulated signals. The technique is intend for real-time systems using general-purpose processors and is based on a modified decision-theoretic approach. It is robust and efficient with a processing...
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