System and method for determining volume of fluid in a tank
First Claim
1. A system for determining volume of fluid in at least one tank, the system comprising:
- at least one tank mounted on a vehicle, the at least one tank being capable of storing a volume of fluid;
at least one sensor positioned within the at least one tank, and submersed in fluid when fluid is in the at least one tank, the at least one sensor being configured for measuring pressure of fluid proximate to the bottom of the at least one tank;
at least one vent line operably connected to the at least one sensor, the at least one vent line having a single end through which air may flow and atmospheric pressure may be communicated to the at least one sensor, the at least one sensor being further configured for adjusting a fluid pressure reading by the communicated atmospheric pressure;
a first at least one processor positioned within the at least one sensor, and a first at least one memory coupled to the first at least one processor, the first at least one memory including computer program code executable by the first at least one processor for generating pressure signals indicative of fluid pressure adjusted by atmospheric pressure; and
means for determining the volume of fluid from the pressure signals.
1 Assignment
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Accused Products
Abstract
Volume of a fluid in a tank is determined by measuring the pressure of fluid proximate to the bottom of the tank. The depth of the fluid is then determined from the pressure and density of the fluid. Fluid volume is then determined mathematically or from charts given the depth as well as the size and shape of a tank. Multiple pressure readings may be taken along the bottom of a tank, and an average pressure determined that may be used to calculate volume. Pressure readings may be taken at different heights to determine fluid density used to calculate volume. Pressure readings may be adjusted for atmospheric pressure. Volume increases or decreases exceeding a respective predetermined threshold may be flagged and alerts generated. Volume calculations may be recorded for comparing against a volume of fluid recorded as being purchased.
55 Citations
30 Claims
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1. A system for determining volume of fluid in at least one tank, the system comprising:
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at least one tank mounted on a vehicle, the at least one tank being capable of storing a volume of fluid; at least one sensor positioned within the at least one tank, and submersed in fluid when fluid is in the at least one tank, the at least one sensor being configured for measuring pressure of fluid proximate to the bottom of the at least one tank; at least one vent line operably connected to the at least one sensor, the at least one vent line having a single end through which air may flow and atmospheric pressure may be communicated to the at least one sensor, the at least one sensor being further configured for adjusting a fluid pressure reading by the communicated atmospheric pressure; a first at least one processor positioned within the at least one sensor, and a first at least one memory coupled to the first at least one processor, the first at least one memory including computer program code executable by the first at least one processor for generating pressure signals indicative of fluid pressure adjusted by atmospheric pressure; and means for determining the volume of fluid from the pressure signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for determining volume of fluid in at least one tank, the system comprising:
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at least one tank capable of storing a volume of fluid; at least one sensor positioned within the at least one tank, and submersed in fluid when fluid is in the at least one tank, the at least one sensor being configured for measuring pressure of fluid proximate to the bottom of the at least one tank and for adjusting a measurement of fluid pressure by atmospheric pressure; a first at least one processor positioned within the at least one sensor, and a first at least one memory coupled to the first at least one processor, the first at least one memory including computer program code executable by the first at least one processor for generating pressure signals indicative of fluid pressure adjusted by atmospheric pressure; and means for determining the volume of fluid from the pressure signals. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A system for determining volume of fluid in at least one tank, the system comprising:
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at least one tank mounted on a vehicle, the at least one tank being capable of storing a volume of fluid; at least one sensor positioned within the at least one tank, and submersed in fluid when fluid is in the at least one tank, the at least one sensor being configured for measuring pressure of fluid proximate to the bottom of the at least one tank; at least one vent line operably connected to the at least one sensor, the at least one vent line having a single end through which air may flow and atmospheric pressure may be communicated to the at least one sensor, the at least one sensor being further configured for adjusting a fluid pressure reading by the communicated atmospheric pressure; a dry box attached the at least one vent line to aid in absorbing moisture and keeping air in the at least one vent line dry; a first processor positioned within and coupled to the at least one sensor; and a first memory positioned within the at least one sensor and coupled to the first processor, the first memory including computer program code executable by the first processor for determining volume of fluid with reference to the pressure of fluid as adjusted by atmospheric pressure, the density of the fluid, and the size and shape of the at least one tank. - View Dependent Claims (26, 27, 28, 29, 30)
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Specification