An acousto-magnetic synchronizing point instrument with automatic sound closing and intelligent background noise reduction reset

Abstract

The invention discloses an acousto-magnetic synchronous fixed-point instrument with automatic sound-off and intelligent background noise reduction and reset, which is mainly composed of an acousto-magnetic synchronous fixed-point module composed of a high-performance Blackfin DSP processor and its peripheral circuits, and a capacitive touch switch. It consists of an intelligent background noise reduction reset module composed of an automatic sound-blocking module and an acceleration sensor. The DSP processor and its peripheral circuits are used to detect the sound and magnetic field signals of cable fault point discharge. EMD filter technology is used to analyze the time difference of acousto-magnetic synchronous transmission, and the sound signal is output after intelligent background noise reduction; the capacitive touch switch is used to realize audio The automatic sound-closing function of the signal output prevents the ear of the inspector from being damaged by the excessive decibel volume during the movement of the instrument; the acceleration sensor is used to detect the movement of the instrument to realize background noise reduction and reset. The invention has extremely high calculation accuracy and fast calculation speed, super strong anti-strong electromagnetic interference ability, multi-functional synthesis and high integration degree; and it is easy to carry, more intelligent and more humane.

Description

technical field [0001] The invention relates to a fixed-point detection device for cable faults in electric power systems and electronic technologies, in particular to an acousto-magnetic synchronous fixed-point device with high precision, easy to carry, intelligent and humanized automatic sound blocking and intelligent background noise reduction and reset. Background technique [0002] With the development of social economy and the acceleration of modernization construction, the electricity consumption of industrial and agricultural production and people's life is increasing day by day, the demand for electricity is increasing, and the safe operation of power grid is required to be higher and higher. As a buried power cable that connects various electrical equipment, transmits and distributes electric energy, it has gradually replaced the overhead line. The transmission performance of buried cable power supply is more stable and reliable than overhead lines in urban and rur...

AI Technical Summary

Problems solved by technology

[0005] At present, although there are many kinds of fixed-point instruments used for power cable fault detection, they all have certain shortcomings: insufficient humanized design, single function, not intelligent enough, etc.

For example, during the movement of the ground penetrating probe, the external noise will irritate and hurt the operator's ears, and the prior art detection device cannot effectively protect the operator.

Moreover, many detection devices are complicated to use, and some functions need to be manually set by the operator during use, and the operator's action signal cannot be automatically recognized. Because it is not smart enough, it brings a lot of trouble to the operator.

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