β Scribed by Berthold Bitzer; Uwe Lamotte
No coin nor oath required. For personal study only.
A new ultrasonic sensor system in fluid-filled tubes is reported. The system is a solution for transmitting information without the installation of cables, which in some cases will be very difficult and expensive. The described ultrasonic sensor system for energy saving has been developed and demonstrated by an EC project in cooperation with industry and the University of Paderbom. The paper particularly discusses those parts undertaken by the latter. The university analysed existing single-room controlled heating systems and selected suitable buildings for the new ultrasonic system. In addition, computer programs for calculation of energy saving and for ultrasonic transmission in fluid-filled tubes will be realized. An expert system is used for the simulation program of the ultrasonic transmission.
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have a component perpendicular to the surface. According to the laws of friction, this would allow a frictional force parallel to the surface which would increase the reaction further. For a sufficiently large angle between AC and the surface, and sufficiently large coefficient of friction, the bull
## Abstract In this paper, the βlocalized and loadβbalanced clustering (LLBC)β protocol is proposed for the energy savings and lifetime increases of wireless sensor networks. LLBC contains two approaches. One is improved cluster head rotation (ICHR) and the other is modified static clustering (MSC)