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The vehicle monitoring systems are consisted with more than one server. This involves problem of the information sharing and message transmission among the servers. Communication service system is mainly responsible for the problem of how to transfer and analysis of information. This paper puts forward a kind of optimization design method of communication service system for vehicle remote monitoring...
This study proposes the method which is used for roller bearing feature extraction of local mean decomposition (LMD) and multi-scale entropy (MSE). LMD is firstly applied to decompose the measured vibration signal into a series of product functions (PFs), and then MSE is used to extract the feature vectors from the selected PF component. Lastly, the obtained feature vectors of roller bearing with...
The voltage coefficient of low voltage capacitor is the most important fact that affects the accuracy degree of capacitance value of capacitor. Its value and feature must be measured out when it used in the high accuracy situation. This paper presents an absolute double voltage measure method that gets the absolute voltage coefficient curve from 0 V to 1000 V needs only 5-step measurement. And proposed...
An improved method of measuring high-value capacitors based on sampling technology is presented in this letter. A standard resistor is used as reference at its resistance and time constant. An inductive shunt is used to produce two precisely equal currents in parallel so that the capacitor and the resistor can be measured at ground potential. The calibration procedure for the inductive shunt, the...
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