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Indoor air pollution monitoring is an important activity toward a more clean air for indoor environments as most of people spend a lot more time in such environments (as e.g. at home, at their workplace or at kindergarten/school/university). The quality of indoor air can have a strong impact on human health, due to longer exposure, especially when ventilation is poor. So far, some solutions were proposed for solving this problem, starting from simple stationary sensors, to more complicated mobile sensing networks ...

The authors of this paper developed a concept that can be used for automatically car parking; the concept is based on finding the obstacle free spaces around the vehicle and it uses methods to guiding the car in an available found parking place. The car sensing system includes ultrasonic sensors to measure distances, proximity sensors to detect obstacles and a rotative position sensor to measure the vehicle displacements. A microcontroller based central processing unit (CPU) was used to process sensorsпїЅ informat...