Design And Research Of Dredger Battery-powered Electromagnetic Flowmeter System

With the rapid development of industrial technology and electronics, the demand forlow-power design of instrument becomes more and more highly. In recent years, manydomestic and foreign companies successfully developed battery-powered electromagneticflowmeter. Without exception, the excitation method uses rectangular wave excitation,and the use of sampling interval velocity lower power consumption. For the dredgerelectromagnetic flowmeter of AC excitation mode, almost no products in this area. Thereason is that the AC excitation power consumption is too large, a small current excitationtechnology is hard to break, and generally can’t be achieved continuous detection.On this point, this paper introduces the design of a wireless remote transmissionfunction of the battery-powered dredger electromagnetic flowmeter. This paper improvesthe excitation circuit based on impedance matching technology. The apparent power isreduced from500VA to13VA, the use of power is greatly reduced; Using DC/DC voltageconversion technology, battery energy is assigned as the power required by the variousmodules; The use of multi-level power management and battery power managementcircuit achieves the breakthrough in key technologies of the battery-poweredelectromagnetic flowmeter. As well as, the product can detect the pipeline pressure andmeasure the fluid density.In this paper, the design of battery-powered system meet the needs of dredgerelectromagnetic flowmeter in no AC power occasion. The product can be used morewidely, more suitable for complex industrial applications and construction environment.