Korenix JetNet series managed switches have been installed in a coal mine automation project in China for providing safe, reliable operation and productive environment underground mines. The JetNet 4508f-m V2 managed Din Rail switches with the dual multi-mode fiber ports and MSR connectivity provided real-time and extended data transfer underground mines, while the JetNet 5628G Rackmount managed switches with gigabit combo interfaces reliably backboned the high-speed data to the control center. With their highly robust design, -40 up to 85oC operating temperature and High Level EMC conformance the switches enabled a highly stable data transfer resisting the heavy industry-specific conditions underground mines.
Over the past several years, mine safety has become a serious issue in China due to the number of mining accidents and explosions that take place on regular bases. To reduce mine disasters, improve mine safety and promote stable coal, gold, platinum or other valuable mineral production, mine distributing companies are introducing advanced monitoring and communications systems for enhancing safe operation underground mines.
The system stability and over the clock operation is a major task to conquer when installing devices underground. Therefore, the solutions should be designed to be able to face the harshest conditions while transferring data without losses.
To provide highly reliable data communication for its mines, a Chinese Mining Company has come up with the decision to use Korenix JetNet series managed switches in its project. The 4508f-m V2 switches with multi-mode fiber ports have been installed in the underground areas of the open pit mine, where they provided connectivity to the humidity sensors, temperature measuring devices and other equipment using 6 10/100TX copper ports, and connected the switches together via the 2 100Mbps fiber ports. The switches have been chosen with multi-mode fiber ports to allow extending data up to 2KM: hence, coal miners could easily connect the devices installed far from each other, as well as ensure the extended uplink connection from the underground to the control center.
The reliability of the data underground has been achieved using the MSR ring redundancy technology of the switches – the JetNet 4508f-m V2 series with the support of MSR were capable of forming rings together. If any link failed, the network could be recovered instantly, within 5ms, without causing any data loss.
Another important factor for the Coal Mining Company to choose JetNet 4508f-m V2 for the underground installation, has been its robust design: the switches with Level 3 EMC conformance for heavy industry deployments as well as the EN 50121-4 Railway EMC, IEC 61373 vibration/shock approvals are constructed in rugged IP31 enclosures, and have a wide operating temperature range -40~75°C (JetNet 4508-w/4508f-w V2). This means that they could reliably be used under tough conditions without any instability.
The JetNet 5628G series fanless rackmount switches were further used in the control room on the ground to ensure reliable backbone connection with the JetNet 4508f-m V2 switches for collecting the data from underground area. By using the modular design, users could benefit from various copper or fiber connections and get data from a great number of devices installed in a control room. Using SFP combo ports for 100Mbps fiber connection, they collected all the real-time data to send it to the PC through high-speed gigabit combo ports for analyzing the situation under mines.
Besides, as it supports LLDP and JetView Pro, users could directly get the topology of the network and monitor the devices, change the IPs etc, the group management etc from the control room.
Using Korenix switches the company allowed system integrators to prepare highly reliable data transmission from the underground mine to the control center without any data loss and collision and thus providing safe mine operation.
Korenix Technology (korenix.com / korenixsurveillance.com), a Beijer Electronics Group Company, is devoted to designing and manufacturing high quality Industrial Networking & Computing Products to ensure high quality and reliability of industrial networks. Korenix solutions encompass the Industrial IEEE 802.3af PoE and IEEE 802.3at High power PoE Switches, Industrial L2 / L3 Rackmount / Rail Ethernet Switches and IP67/ 68 Waterproof Ethernet Switches, Long Distance Wireless Outdoor APs and Embedded Networking Routing Platforms, etc.