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One kind of acid rain measuring method for large ancient sites in the field based on internet of things technology is researched and realized. The working principle of pH value detection is analyzed [1] and pH-value sensor conditioning circuits are constructed. Automatic temperature compensation of pH-value sensor and conditioning circuit are conducted using AVR control panel carrying a temperature...
In this paper, a method is developed to optimize the geometry and to improve the sensitivity of four-terminal planar Hall devices under the voltage biasing. Using the conformal mapping, we can construct geometrically different Hall devices with the same sensitivity. The Hall voltage sensitivities thus obtained are close to the theoretical limit. Our analysis is verified by a recent experiment on graphene...
Most previous studies of electromyography (EMG) pattern recognition control of multifunctional myoelectric prostheses adopted a conventional sampling rate that is commonly used in EMG research fields. However, it is unknown whether using a lower sampling rate in EMG acquisition still preserves sufficient neural control information for accurate classification of user movement intents. This study investigated...
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