Introduction
Although airfreight is the most efficient mode of transportation available to transport many types of goods, ocean shipping still plays an essential role in global commerce. One of the reasons for this is that cargo ships are the only feasible option for transporting large quantities of some items, such as oil, wood, minerals, and other raw materials.
Oil tankers, for example, are used to transport crude oil from the Middle East to other countries around the world. All oil tanker owners strive to build efficient fleets so that they can better manage their ships and maximize the company's profit. But how can we make the operation of oil tankers more efficient? For oil tankers, the key to efficiency is fuel monitoring and control.
New oil tankers come with newly-designed engines that save on fuel. However, a critical point to ensure safe and efficient operation is to balance the remaining fuel on the ship. Tankers have several fuel tanks located in different places on the tanker. If the remaining fuel swings, pitches, or rolls, the ship could move at a slant, resulting in a lot of fuel being wasted. To get around this problem, a system that manages and controls the 3D balancing of fuel tanks is required. Several kinds of valves and controllers control the interlinked fuel tanks. Once a sensor detects that the fuel is not balanced, the appropriate valves will be opened, and oil will be pumped from one tank to another. Since the fuel tanks are distributed around the ship and all the monitoring information must be transmitted to the control center, a redundant ring is the best solution to connect the entire system and transmit data to the control center.
 
Recommended Solution
Several sensors and meters are connected to the controller. A workstation in the control center takes care of gathering information of how much fuel remains, and keeps track of which fuel tanks should have fuel removed. An Ethernet network with a redundant ring collects and exchanges messages between controllers and the control center. Some controllers come with a built-in Ethernet interface, whereas others support an RS-232/485 interface. The entire system is integrated into a single communication network with industrial serial to Ethernet device servers and Ethernet switches. This type of configuration not only makes the system easier to maintain, but also makes the monitoring and control of the fuel tanks less complex.
 
 
  Why Moxa?
 
  Moxa's EDS industrial Ethernet switch family is certified by marine approvals and prime industry standards to ensure reliable operation in rugged ship environments.
     
  The EDS-608 and EDS-728 series switches are rated to operate at temperatures from 0 to 60° C, which is reliable enough for the equipment to survive in a demanding ship environment (T models of the EDS-608 series have an operating range of -40 to 75ºC).
 
  The EDS-608 and EDS-728 series support fiber optic ports to handle long distance transmission from different decks to the ship's central control room.
     
  Moxa's Turbo Ring supports fast media redundancy, with a recovery time of less than 20 ms, providing customers with a reliable and stable network.
 
 
Key Products
 
 
NPort 5610/5630 Series Device Server
  Server LED display panel for TxS/RxD status monitoring
  Up to 16 RS-232/422/485 serial ports, 50 bps to 230.4 Kbps baud rate
  Built-in 15 KV ESD protection for all serial signals
  Supports ICMP, IP, TCP, UDP, DHCP, BootP, Telnet, DNS, SNMP, HTTP, SMTP, SNTP
  10/100 Mbps Ethernet (auto-detection)
  Each port can be independently configured to a different socket mode
 
 
 
EDS-608 8-port Compact Modular Managed Ethernet Switch
  Compact and space-efficient design
  Up to 8 optical fiber connections in a small size
  Turbo Ring and Turbo Chain (recovery time < 20 ms), and RSTP/STP for Ethernet redundancy
  Hot-swap media modules for continuous operation
  Complete management and security features
  -40 to 75ºC operating temperature range (T models)
 
 
 
EDS-728 24+4-G-port Modular Managed Ethernet Switch
  Modular design with 4 Gigabit plus 24 fast Ethernet ports for copper and fiber
  Up to 4 Gigabit port for Gigabit backbone and uplinks
  Gigabit Turbo Ring, Turbo Chain, and RSTP/STP for Ethernet redundancy
  Modbus/TCP, LLDP, IGMP, QoS, VLAN, LACP, IEEE 802.1X, SSH, and more
 
 
 
 
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