Importance of GNSS Positioning in Mines

These accidents once again remind us of the high risk of mining work. How to improve mine safety and reduce accidents is an urgent problem to be solved. As an advanced technical means, the Global Navigation Satellite System (GNSS) is gradually being applied to mines to improve safety and production efficiency.

1.What is GNSS and how does it work?

The Global Navigation Satellite System (GNSS) is a system that uses satellite signals for global positioning. It consists of multiple satellite constellations. Through the signals transmitted by these satellites, ground receiving equipment can calculate its accurate position, speed and time information. At present, the GNSS systems widely used in the world include the United States' GPS, Russia's GLONASS, the European Union's Galileo and China's BeiDou.

Working principle of GNSS:

Satellite signal transmission: GNSS satellites orbit the earth according to a predetermined orbit and continuously send signals to the ground. These signals include the satellite's position, time and other necessary data information.

Signal reception and calculation: The ground GNSS receiving device receives signals from at least four satellites, and calculates the position of the receiving device by comparing the difference in signal arrival time using triangulation.

Data correction: Due to the interference of factors such as the atmosphere and ionosphere on the signal, the GNSS system also needs to perform error correction, usually with the assistance of ground stations to improve positioning accuracy.

Through this series of processes, the GNSS system can provide users with high-precision positioning, navigation and timing services.

2. Why is GNSS important in mines?

The mining environment is complex and often accompanied by high-risk and high-risk operations. Ensuring the safety of workers and improving work efficiency are the top priorities. As a precise and real-time positioning technology, GNSS has the following important significance:

• Safety monitoring: Through GNSS technology, all mobile devices and personnel in the mining operation area can be monitored in real time. Once an abnormal situation is found, it can be quickly located and emergency measures can be taken, thereby effectively reducing the risk of accidents.

• Precision mining: Mining excavation requires high-precision positioning and navigation. GNSS can provide centimeter-level or even higher precision location data to ensure the accuracy of mining operations, reduce resource waste, and improve work efficiency.

• Equipment management: There are many types of equipment in large-scale mines. GNSS can be used to manage equipment in a unified manner, track equipment location and status in real time, optimize equipment scheduling, and avoid equipment idleness and conflicts.

• Environmental monitoring: Mining has a great impact on the surrounding environment. Through GNSS technology, geological changes in mining areas can be monitored, geological disasters can be prevented, and the environment can be protected.

3. Congping Technology uses GNSS to improve the accuracy and efficiency of mining applications

Congping Technology is committed to providing high-performance vehicle-mounted tablets. These devices are not only rugged and durable, but also integrate global navigation satellite system (GNSS) functions, which can achieve centimeter-level high-precision positioning. Below, we will introduce in detail how Congping's vehicle-mounted tablet uses ground-based augmentation networks and digital radio stations to achieve GNSS high-precision positioning.

High-precision positioning principle based on ground-based augmentation networks

Ground-based augmentation networks (RTK, Real-Time Kinematic) are a technology that improves GNSS positioning accuracy by setting up ground base stations. It provides high-precision positioning by processing signals from multiple GNSS satellites in real time and using known position data obtained by base stations for differential correction.

Working principle:

• Base station setting: The base stations of the ground-based augmentation network are set up in or near the mining area. The exact locations of these base stations are known and they continuously receive GNSS signals.

• Differential correction: The base station compares the received GNSS signal with its known location, calculates the positioning error, and sends these correction information to nearby mobile devices (such as the vehicle-mounted tablet of Congping Technology) in real time.

• Real-time data transmission: After receiving the correction information from Congping's vehicle-mounted tablet, it combines the satellite signals it receives to adjust and optimize the positioning results in real time to achieve high-precision positioning.

High-precision positioning principle based on digital radio

Digital radio is another technology used to improve GNSS positioning accuracy. It transmits positioning correction information by establishing a dedicated data transmission channel. This technology is usually used in conjunction with the ground-based augmentation network to further improve positioning accuracy and reliability.

Working principle:

• Data transmission: The digital radio is set up in the mining area and transmits the correction data generated by the base station to Congping's vehicle-mounted tablet via radio signals. This transmission method can cover a large area, ensuring that equipment and personnel in every corner of the mine can receive correction data.

• Correction application: After receiving the correction information sent by the digital radio, Congping's vehicle-mounted tablet will correct the received GNSS signal and calculate more accurate location data. The digital radio ensures the real-time and accuracy of the correction data wirelessly, and can work stably even in a complex signal environment.

Conclusion

The three-proof tablet computer of Congping Technology provides personnel and equipment in the mine with a positioning accuracy of up to centimeters by adopting the high-precision positioning principle of the ground-based augmentation network and the digital radio. The application of this technology has significantly improved the safety management level and production efficiency of the mine, and injected strong technical support for the intelligent and modern development of the mining industry. With the continuous advancement of GNSS technology, Congping Technology will continue to play an important role in the safety and efficient production of the mining industry!