Design of wireless monitoring system for urban water supply based on embedded technology

In this paper, in order to manage and use the city´s water resource reasonably, a wireless monitoring system for urban water supply based on ARM7 microprocessor is designed. This system uses ARM7 microprocessor of low power and high-performance as the main chip, and designs software with µC/OS-II real-time operating system based on the data radio and the graphical interface, to achieve remote real-time monitoring for water consumption of enterprises. In addition, during the debugging process, the electromagnetic flow meter has non-linear output because of interference by a strong current, so this system uses the first order Taylor expansion for the working point in order to linearization. In a word, this system avoids the work method of the traditional meter-reading and reduces water waste to a certain extent.