Unformatted text preview: ﬂoat and anything else inside the tank have negligible volume and mass. Design a system to convert the mass of the water in the tank, x , to a ﬂoating point number H ( x ) = x/ kg, with an accuracy of at least 500 grams. Be sure to include the following in your solution: • A diagram showing the ﬂoat and its range of motion. • A mapping between water level and mass. • The choice of ADC. • A justiﬁcation for the ADC precision. (Be sure to give this a little thought). • A schematic diagram of the conditioning circuit, simple though it can be. • The interface routine, showing how the value read from the ADC is converted into kilograms. Hint: Do not attempt to work with a mapping from water mass to ﬂoat position. Instead, determine the water level in the interface routine, then convert to mass....
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 Fall '99
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 Volt, Kilogram, Tank, water level, simple linear model

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