How to Design an Automatic Fuel Level Monitoring-Circuit System in Gas Station Tank

Here we find an article that explains you about how to design a system that will measure the level of fuel in the tank (maybe gas station) and send it automatically to computer-monitoring system. Below is the circuit diagram of the monitoring device.

The circuit will need a 240v supply which will step-down to 24V by a transformer and further be rectified using diodes (IN4007) to DC voltage. According to the article, you will need such 470µF 50V electrolytic capacitors since they are used to initiate rectifying the 24V or removing any unrectified AC. But the expected Vcc to be used is 12V, then you will need 7812 IC to be connected to the capacitor in order to reduce the 24V to 12V. This voltage (12V) is the Vcc to the transistors(C1815).

These 12V DC is further rectified by using another electrolytic capacitor (470µF 50V) to remove any AC that might have escaped earlier rectification and then reduced to 5 V using another voltage regulator 7805 IC. This further reduction became necessary because the 4066 IC used can only take and the computer system can also take 5V as input voltage.

This article that was issued by Medwell Journal of Engineering and Applied Science aimed to achieve an automatic fuel level computer-monitoring system that will measure the quantity of fuel inside a tank at four different levels representing 4 sensors. It will trigger an alarm if the fuel goes below minimum level in addition of sensing the level fuel inside in liters as shown on the computer interface. Have this how to article here