Background introduction:

The safety production of coal mining works is a comprehensive and systematic project. A slight negligence may cause a major accident and endanger the safety of production. Therefore, coal mining safety monitoring is very important, especially the monitoring of the transportation process of coal mining. During coal mining, the coal needs to be transported through the conveyor belt. However, if ferromagnetic tools such as coal shovel and shovel are transported along with the coal together with the conveyor belt, the shovel may rip or scratch the conveyor belt and cause the conveyor to stop in severe cases, causing heavy losses to coal production. Therefore, a highly-reliable monitoring device that is dust-proof and resistant to harsh working environments is in urgent need. Once the coal shovel enters the conveyor belt, sound and light alarm will be sent in time to remind the staff to clear hidden safety hazards in time to ensure uninterrupted transportation. Guochuang Micro-magnetic Basic Sensor Detection Array is installed at the entrance of the coal conveyor belt, which can monitor whether there are metal ferromagnetic signals on the conveyor belt in real time. Once a coal shovel is mistakenly transmitted to the conveyor belt, an audible and visual alarm will be sent immediately and a special notification will be sent to relevant specialist to deal with it immediately so as to avoid production accidents and ensure normal production.

 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.

 

 Technical solution:

The safety monitoring system of coal mining transportation is mainly composed of Guochuang Micro-magnetic Basic Sensor Array as the core equipment. It can monitor whether there are ferromagnetic foreign objects in the coal in real-time and send sound and light alarms in time to guarantee the safety of coal transportation.

  

 The main components of the system:

1. The safety monitoring system of coal mining transportation is composed of the micro-magnetic basic sensor array, communication module, digital signal unit, etc.;

2. The micro-magnetic basic sensor array is installed at the entrance of the coal block and the junction of the conveyor belt for double monitoring;

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 monitoring system of coal mining transportation.