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Case study: Installation of automated fuel management system

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article image Moxa decided to use the AWK-4121 wireless access point designed for outdoor applications to set up a wireless LAN
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Moxa Inc. provided a complete solution for one of its clients to help them monitor fuel and vehicle data being collected at fuel control terminals, on board the vehicles, and tank monitoring systems.

Transportation and construction fleets need to accurately record and report fuel usage to other enterprise systems and the fleet maintenance system to minimise fuel consumption costs. 

The Moxa customer is a leading provider of automated fuel management systems, often used on tank trucks that transport gasoline to gas stations across the state of Texas. Their automated fuel management system, or AFMS features fuel control terminals that track how much fuel is pumped into the trucks, as well as CAN-bus vehicle data and fuel tank monitoring systems installed on each truck in the fleet. 

The client sought a solution to monitor fuel and vehicle data collected at various points. The devices needed to be UL C1D2-compliant for hazardous applications; CAN-bus wireless clients on the tank trucks needed to be integrated into the AFMS; and a highly-secure network was needed for AFMS transmissions.

Moxa solution

The tank monitoring system consists of a probe inside the bulk fuel tank that constantly measures the amount of gasoline being transported by the truck, preventing theft and maintaining effective inventory control. Since each truck also needs a separate fuel tank to supply gasoline, the customer’s AFMS includes a CAN-bus vehicle monitoring system to track vital vehicle parameters, fuel consumption, and tyre pressure on a single device. 

By installing an AWK-3121 access point atop the kiosk, information from the bulk tank, and fuel truck (via CAN-bus), can be gathered and sent to an adjacent AWK-3121 client, which will then transmit the data to an AWK-4121 IP68 wireless access point located at the gas station control room.

The WLAN provided a secure AFMS for the company and its fleet of fuel trucks. The next step was to outfit the fuel control terminals with a wireless networking device to collect data from the trucks and transmit that data to a wireless LAN for remote monitoring. Since the fuel control terminals were connected to gas pumps at gas stations served by the fleet, Moxa decided to use the AWK-4121 wireless access point designed for outdoor applications to set up a wireless LAN. 

When a truck pulls up to a gas pump, data from the tank monitoring system and the vehicle monitoring system will automatically be accessible by the supervisory system over the fleet’s WLAN.

The Moxa solution complied with strict UL C1D2 standards for hazardous locations ensuring that the wireless connections can run safely in highly volatile gas station environments. Automatic data collection without manual operation, as enabled by Moxa’s solution enhances efficiency, reduces human error, and guards against unwanted modifications and unauthorised access. Network segmentation has been effectively and conveniently achieved by establishing a VLAN that accommodates the individual needs of the many companies and gas stations served by the fleet of tank trucks.

Moxa’s comprehensive line of WLAN and cellular solutions has been successfully implemented in various mission-critical industrial applications, including transportation, factory automation, smart grid, and heavy industry. 

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