Background analysis:

It is reported that the higher the frequency of electromagnetic radiation, the easier it is to produce electromagnetic radiation. Long-term and excessive electromagnetic radiation can cause damage to the human reproductive, nervous and immune systems which become the main cause of skin diseases, cardiovascular diseases, diabetes, and cancer mutations. On January 30, 2018, the first online monitoring system of substation electromagnetic environment in Guangxi was officially accepted and put into operation at the 110kV Sanlidian Substation of Guangxi Guilin Power Supply Bureau of China Southern Power Grid. In recent years, people have been paying more and more attention to the safety of environmental magnetic fields such as the electromagnetic environment, and environmental magnetic field monitoring has become an emerging topic in the field of environmental monitoring. Modern environmental magnetic field monitoring devices include drones, airborne electromagnetic radiation monitors, airborne data collectors, ground data terminals, etc. which can perform environmental magnetic field monitoring well. In order to grasp the strength of the magnetic field and the impact on the surrounding environment, there are also a wide range of instruments and equipment used to monitor the signal strength of the magnetic field. However, some high-precision scientific research equipment and instruments can only work in a relatively clean environmental magnetic field. The measurement of magnetic field belongs to the field of weak magnetic field, and the requirements for the resolution and sensitivity of the monitoring equipment are quite high. The use of high-resolution Guochuang Micro-magnetic Basic Sensors can meet the strict requirements.

 Principle:

Magnetic anomaly targets contain ferromagnetic features (such as iron, cobalt, nickel, etc.) materials or currents. The intensity of the magnetic field is inversely proportional to the cubic target distance, H∝M/R³. The environmental magnetic field monitor composed of Guochuang Micro-magnetic Basic Sensors can be installed or carried to quickly detect the value and direction of the geomagnetic environmental field, and the noise level can reach 20pT.

 Technical solution:

The environmental magnetic field monitoring system is mainly composed of a high-sensitivity and high-resolution Guochuang Micro-magnetic Basic Sensor Array, which monitors weak magnetic field information and provides an important guarantee for scientific research or important magnetic applications.

 The main components of the system:

1. The environmental magnetic field monitoring system is composed of micro-magnetic basic sensor array, communication module, digital signal unit, etc.;

2. The micro-magnetic basic sensor array is installed on the environmental magnetic field monitoring system where electromagnetic interference is moderate;

3. Related algorithms include: micro-magnetic basic sensor array calibration, environmental noise suppression, processing of magnetic anomaly targets small signal, etc.;

4. Network data center: collection of data and information such as micro-magnetic basic sensor array data and magnetic anomaly signals;

5. Terminal console: display the working status and parameter information of the environmental magnetic field monitoring system.