Application Cases

Magnetic communication technology provides a novel approach to addressing underground emergency communication challenges. By utilizing induced magnetic fields as channels for information transmission, this method exhibits strong penetration capabilities through obstacles and minimal susceptibility to environmental medium interference. Currently, magnetic communication has been implemented across various domains where electromagnetic waves propagate poorly, including underground and underwater environments. Compared to traditional wired underground communication solutions, wireless underground communication systems employ a cable-free transmission mechanism, wherein transmitting and receiving devices exchange information through electromagnetic fields or quasi-static magnetic fields. This approach not only significantly reduces the economic costs associated with deploying and maintaining physical cables but also mitigates the risk of communication disruptions caused by cable failures, thereby enhancing communication continuity and reliability in subterranean environments.

Aigtek's ATA-2000 series high-voltage amplifier can drive coils to generate excitation magnetic fields and construct test platforms. Capable of outputting stable arbitrary waveforms, it is suitable for coil driving applications across diverse experimental scenarios.

Experiment Name: Air-Media Magnetic Communication Experiment

Experimental Principle:
Magnetic communication, as a communication technology based on electromagnetic induction phenomena, is fundamentally rooted in Faraday's law of electromagnetic induction. When the current within a closed circuit fluctuates over time, it induces corresponding variations in the magnetic field intensity in the surrounding space. Simultaneously, any change in magnetic flux within a closed conductor structure will induce an electric current. In essence, periodically varying electric fields can drive oscillations in magnetic field intensity, while periodic changes in magnetic field intensity can similarly generate new electric fields. These two phenomena constitute the core principles of electromagnetic interaction. This mutual conversion relationship provides the theoretical foundation for magnetic communication, enabling information transmission through the modulation of current or magnetic field variations.

Experimental Block Diagram:

Experimental Setup Image:

Experimental Procedure:
First, a function generator is used to generate a square wave at a frequency of 50 kHz. The signal is then amplified by the ATA-2021B high-voltage amplifier and connected to two excitation coils. Simultaneously, an oscilloscope monitors the signal received by the receiving coil. By moving the receiving coil along a straight line to vary the distance between the transmitting and receiving coils, the experiment investigates the variation pattern of received power at different transmission-reception distances in an air-media dual-transmitter single-receiver magnetic communication system.

Application Areas: Geological engineering, military applications, emergency rescue

Application Scenarios: Underground emergency communication, through-ground communication, deep-sea communication

Product Recommendation: ATA-2000 Series High-Voltage Amplifier

Figure: ATA-2000 Series High-Voltage Amplifier Specifications