INCREASING THE HAND RADAR EF-FICIENCY IN LOW COST CONDITIONS

Mobile radars, known as hand radars become standard road patrol and are an effective way to control the vehicles speed by traffic safety point of view. Price reduced in comparison with radars mounted on the patrol cars or fixed detection systems, make these more accessible. We developed a complete detection and speed registration system starting from basic hand radar, finding at the same time a main low cost solution. Our solution combines the radar system with a video camera, both linked with a portable PC, for capture the picture of the detected vehicles. For make the connection between both devices, we developed a soft for record traffic values (speed and vehicle flow together with the image capture of the target vehicle). We proposed an upgrade of vehicles detection which assure plus information recorded: vehicles flow and time delay between two vehicles which run on the same direction. Supplementary a data base is automatic created and it contains vehicle capture image in sated speed detection limit conditions. We test the developed system in laboratory conditions (testing center) and in real conditions (national road). The results showed the viability of the proposed upgrade developed for the hand radar equipment, based on the video and statistic information acquired as a low cost solution

An Efficient Method for Testing the Quality of Drinking-Water Filters Used for Home Necessities

This paper presents research conducted in the direction of analyzing the efficiency of filters used for drinking water intended for domestic consumption, with effects on the water quality gained from the public distribution network. A basic method that uses accessible techniques, such as optical microscopy and tests that involve the use of existing products on the consumer market, was developed regarding the filtration capacities of the main filters existing on the market—a method that has advantages, such as speed and ease of application, a unitary character in obtaining samples, low costs, and high efficiency. The technique approached is that of microscopy, and the samples used were taken from the laboratory tests made on the mentioned filters, using a specific experimental stand designed to support laboratory tests by using chosen filter cartridges. The research results obtained were analyzed to make a classification from the perspective of filtration efficiency, in terms of using statistical analysis tools (mathematical models and methods processed in MATLAB software). Moreover, by using a certain type of application based on specific mathematical algorithms, which takes into account some influential factors with a decisive role on household consumers, it was aimed to identify the optimal filter element for acquisition and use in its own regime. The aim of the study was to identify the optimal filter cartridge from the perspective of quality–price ratio