Adaptive control electromagnetic induction energy harvesting method and system for a power transmission line

An adaptive control electromagnetic induction energy harvesting system for a power transmission line, comprising an electromagnetic induction energy harvesting device and an analysis and control unit, wherein

• the electromagnetic induction energy harvesting device comprises a magnetic core unit, a processor unit, a voltage protection unit, a filtering and rectification unit, a voltage conversion unit, an extension and retraction unit, and a coil unit, wherein the processor unit is connected to the extension and retraction unit, the filtering and rectification unit is connected to the voltage protection unit and the voltage conversion unit, the voltage protection unit is connected to the coil unit, the extension and retraction unit is secured to the magnetic core unit, the magnetic core unit is disposed in the coil unit, the processor unit is configured to transmit an extension and retraction control signal to the extension and retraction unit, and the extension and retraction unit is configured to control the magnetic core unit to perform extension or retraction in the coil unit based on the extension and retraction control signal to acquire an electromagnetic induction electromotive force;
• and
• the analysis and control unit is configured to:
• acquire a first electromagnetic induction electromotive force based on the electromagnetic induction energy harvesting device secured to the power transmission line, in response to the first electromagnetic induction electromotive force being less than an operating electromagnetic induction electromotive force, control the electromagnetic induction energy harvesting device to adaptively control the magnetic core unit to perform extension or retraction in the coil unit based on the first electromagnetic induction electromotive force to obtain a second electromagnetic induction electromotive force, perform filtering and rectification processing and voltage conversion processing on at least one of the first electromagnetic induction electromotive force or the second electromagnetic induction electromotive force to obtain an electromagnetic induction output voltage, and perform powering processing or charging processing on an electrical device based on the electromagnetic induction output voltage.