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GPS positioning technology and GSM wireless communication technology have been widely used in the military field and urban transportation and other civilian areas. Aiming at the singularity of handheld positioner function on the market, this paper designs a combination device of handheld positioner and tracker. By extracting GPS navigation information frame parameters and GSM wireless data transmission...
The Chopper Circuits are widely used in practical applications, but the voltage output of open-loop Buck Chopper could not meet application requirements on stability, accuracy and rapidity. Aiming at these existing problems, this paper presents a closed-loop design, which constitutes the negative feedback by adopting incremental PI regulation and PWM control, to obtain stable and accurate output....
In the process of research on the design of multifunctional electronic scale based on MCU, SCM is seen as the research core. With measuring the weight and temperature of multifunctional electronic scale and designing other circuit, material and structure of the electronic scale, the anti-jamming performance and the measurement accuracy will be improved effectively.
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