05-10-2016, 03:16 PM
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Abstract-An effective driver information system for new generation automobiles is proposed which uses fuel float meter (or gas gauge) is an instrument used to indicate the level of fuel contained in a tank, in our proposed smart driver fuel information system it has been proposed using analog and bar representation for the purpose of fuel level indication. These may also be used for any tank including underground storage tanks. The systems consist of two important circuitry that is for sensing and indication of fuel level. The sensing unit induces simple mechanism of variable resistance for the indication of fuel level decrement in the fuel tank. The sensing unit usually uses a float type sensor to measure fuel level while the indicator system measures the amount of electric current flowing through the sensing unit and indicates fuel level. There are various techniques to implement sensing and indicating systems. The major indication advancements implemented in the proposed system are No of liters in digital, Past one litre millage , Current trip millage, Buzzer indication for low fuel warning, Continuous buzzer indication fuel level below 3litres, kilometre per litre level indication, distance travelled indication, instant fuel consumption indication and low fuel level indication for the smart functioning of car without fuel burden.
I INTRODUCTION
One of the challenging application domains of dependable real-time computer technology is the field of automotive electronics. With the advancement of technology, role of electronics in automobiles is on the rise. Electronic modules are used today to perform most of the control functions in the typical automobile that 25 years ago were performed by mechanical mechanisms. Considering growing importance of electronics in automobiles, Electronic Control Unit(ECU) was developed.
The development of an ECU involves both hardware and software required to perform the functions expected from that particular module. Automotive ECU's are being developed following the V-model. Recently the trend is to dedicate a significant amount of time and effort to develop safe modules by following standards like ISO 26262. It is rare that a module is developed fully from scratch. The design is generally iterative and improvements are made to both the hardware and software. The development of most ECU's are carried out by Tier 1 suppliers based on specifications provided by the OEM.
BASIC STRUCTURE OF SYSTEM
The sending unit is located in the fuel tank of the car and it consists of afloat, usually made of foam, connected to a thin, metal rod. The end of the metal rod is mounted on a variable resister or potentiometer. The variable resistor consists of a strip of resistive material over it which moves across the variable resistor changing the resistance and flow of current depending on the movement of the float with respect to the level of fuel present in the fuel tank.
III FUEL GAUGE
A fuel gauge is a measuring instrument that determines and reports the amount of fuel that is left in a vehicle’s tank or tanks. Each gauge consists of two separate components: an indicator and a sensing or sending unit. The indicator is the part of the gauge that is located on the dash, typically in the instrument cluster, while the sensing unit is located in the fuel tank. There are a few different types of gas gauges, each of which works a little differently, but in general terms the sensing unit measures the fuel level, and the indicator reports that level.
FLOAT SENSOR
The Float sensor is located in the fuel tank of the car. It consists of a float, usually made of foam, connected to a thin, metal rod. The end of the rod is mounted to a variable resistor. A resistor is an electrical device that resists the flow of electricity.
The more resistance there is, the less current will flow. In a fuel tank, the variable resistor consists of a strip of resistive material connected on one side to the ground.