Background analysis:

Security is ubiquitous in social life, and daily monitoring and protection is required in national key cultural relics, resource environmental protection, border ports, forest farms, fishing grounds and other related areas. Common monitoring methods include video, infrared and other methods. But in adverse weather conditions, such as rain and snow, these commonly used monitoring methods will be greatly disturbed. If the magnetic anomaly detection zone of the micro-magnetic basic sensor is arranged at a certain interval around the area that needs to be protected or the magnetic buoy is arranged in the sea protection area, the micro-magnetic basic sensor detection zone can be detected when other people trespass on the protected area with equipment . The magnetic anomaly signal of illegal intrusion, combined with related algorithms, can accurately determine whether there is a magnetic anomaly target illegally entering the protected area, and send the information to the control terminal to issue an early warning signal.

 Principle:

The magnetic anomaly target contains materials or currents with ferromagnetic characteristics (such as iron, cobalt, nickel, etc.), and the magnetic field strength is inversely proportional to the target distance cube, H∝M/R³. We use Guochuang Micro-magnetic Basic Sensor Array to detect the magnetic anomaly information caused by the ferromagnetic target, and determine the feature information of the ferromagnetic target according to the corresponding model algorithm. According to the characteristic that the ferromagnetic targets with different types, shapes and sizes will cause different magnetic field variation, we can establish the mathematical models and algorithms of the corresponding ferromagnetic targets, use the embedded software to deduce the magnetic field change corresponding to the shape, size, position, and speed information of a specific ferromagnetic target, and display it in real time.

 Technical solution:

The schematic diagram of the security defense magnetic anomaly detection system is as follows. The magnetic detection defense belt is composed of Guochuang Micro-magnetic Basic Sensor Array. Once the ferromagnetic object enters the defense area, an early warning signal will be sent.

 The main components of the system:

1. The safety defense magnetic anomaly detection system is composed of micro-magnetic basic sensor array, communication module, digital signal unit, etc.;

2. The micro-magnetic basic sensor array is fixedly installed near the area to be protected;

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 early warning positioning signals;

5. Terminal console: display the working status and early warning information of the safety defense magnetic anomaly detection system.