Accurate Fixed Point Of Cable Fault Detection Based On Acoustic And Magnetic Synchronization

Along with the continuous development of metropolitan area network reforming constantly,power cable has been widely used in this process.Although compared with overhead line cable power supply advantages are more obvious,however the cable fault location difficulty bigger,which means should be looking for cable fault location method is very important,its facilitate timely troubleshooting,normal power supply.In this paper,we find a lot of data,according to the grasp of the current cable fault location method,think sound magnetic synchronous method belongs to a kind of rule out the feasible methods of cable fault,so this paper USES this method to precisely locate the cable fault point location.To the detecting process is in reality to the nature of the fault location,through acoustic wave and electromagnetic detecting synchronous \ "2 in 1\" type multifunctional accurate positioning system design belongs to the effect is the best solution.This system to be able to open circuit,short circuit,high resistance and grounding fault detection,solves the real test of environmental adverse conditions such as noise.This system is to STC12C5410 AD series single-chip microcomputer as the control core of precise positioning system,inductance coil and pickup by acquiring electromagnetic wave and sound signal,at the same time using preamplifier,filter shaping and audio power amplifier check number processing is completed by three modules.Through sound and electromagnetic sensors make it possible for stung positioning;To explore the principle and process of high voltage pulse generator of all;For magnetic synchronous and each part elaborates the design principle of hardware circuit module;Finished all the writing of the software flow chart and program.Using relevant experiment confirm the feasibility of this method.