Diesel Oil System (KUTINFO)

Description of the task

The railway company announced a tender for diesel engines fuel filling system modernization. The aim of the system is to keep the fuel delivery under control, and to prevent fuel appropriation. Furthermore the company can trace the fuel data in the centre.

The customer reconstructed its diesel stations. The containers were renewed, and the engineering elements were equipped with adequate apparatus. The data of 46 petrol stations in a countrywide network are collected to the central server. This server provides 8 main regions data survey.

According to the tender the following 3 main exercises must be realized:

• Providing filling transactions together with expected identifying processes. Based on the refuelling data query generations. (Accounting system)
• To visualize the engineering using data flow sheets tracing the status change. To visualize the status of the taps and valves. (Displaying system)
• To guarantee the safeguarding

The Synergon Information Systems Plc. realizes these tasks in the following way:

The operations of the implemented system

Refuelling and accounting system

In the oil station the transaction can be provided if all the three identifiers are known. It is necessary to identifying the vehicle in which the fill in has done, the vehicle driver, and operator of the oil station (stock keeper). Moreover it must be controlled that the standpipe is connected to the vehicle. If all conditions recognized as done the refuelling can be performed. 

An industrial computer called a filling up automat does the above-mentioned identifying tasks. The filling up automat is a Hectronic product, which is placed near the pump. The following significant parts are forming this device: LCD Display, vandal proof metal keyboard, thermal receipt printer and a radio receiver. The identification is performed by a radio receiver, which is assembled on the engine. The radio transmitter of the engine links to the reel, which verify the connection of the standpipe and card reader for the diver. The transmitter recognizes the vehicle, the driver and the connection of the standpipe. The station operator is identified with his own chip card on the card reader of the filling up automat. The identifier of driver is a similar chip card as the petrol station attendant has. Reading occurs in the vehicle’s card reader. 

The data is loaded to a PC, where, the transactions can be retrieved using the accounting program for the oil station. The name of the accounting program is Tm Office. The PC submits the data to the central server through the WAN network. The accounting program on the server is called AKHOffice. All stations refuelling data can be retrieved through the main server and the attached dispatcher stations. Lists can be retrieved about vehicles, drivers, and the operators by the identifiers. By queries we can choose that which data do we need and in which time interval.

Region centrals can query only by their own region data. They use the WAN network too for this function. An Internet browser from the AKH server performs the query. There is no database in the region centrals. 

Displaying system

To display the engineering flowcharts are completed using a special application. This program is called BuilDog. The status of the engineering elements, pumps, receive /sender valves, connected arms get to PC thought the PLC apparatus. Based on the received signs the status of the several equipments can be followed on the station’s sketch diagram on the PC display. These statuses through WAN network queries are appearing in a settled time in the central server and region centrals.

The tank oil-gauge data collected to the central server too. This display system is checked by logical operations, if the statuses make the refuelling possible. For example: are there any valves which can make failure in case on refuelling, if there is no high water level in tanks, if there is no minimum level in tanks, etc. If any of the above-mentioned situations occuring, the BuilDog application disables the refuelling.

 Safeguarding

The safeguarding system consists of eight-zone alarmcenter and a sensor, which also connects to the station’s PC. The alarmcentre protects the tank’s shaft lids, the fence of the tank park, the barrel1ed tank’s door, and the door of the premises where the PC is located. In case of alarm out of the building a siren signals the incursion.

The BuilDog program manages the alarm on the PC. The stations indicate the place of the alarm on a digital map and send the event to the server and the region central.

Data flow between the oil stations objects

There is a big distance on the stations between the tank park, the petrol station and the warehouse (where the PC can be found). In some places it can be more hundreds metres. The communication between the PC and the other equipments e.g.: PLC, refuelling automat, oil-gauge, are performed through RS232 communication, which cannot be realized in such a distance. To be able to ensure an undisturbed way of working we changed the RS232 signals and send them through an optical cable to the PC room. This solution protects the system from high voltage and from lightning problems. 

Data flow through the petrol station, the server and the region centrals

To develop the country-network we use the customer existing network with the adequate enlarging. To make the WAN connection safer, a back up way was developed by use an ISDN and an analogue phone network. 

Others

Programs are run on WIN 2000 operation system. The operation system of the server is Win 2000 server.

We guarantee the computers virus protection with a Symantec antiviral application. The virus database is stored and refreshed on the server, and the stations download it from this location.