LIQUID LEVEL SENSOR SYSTEM

摘要

A liquid level sensor system for use in a fuel tank, includes an arm that is movable, and constructed to be sufficiently buoyant so that the arm will provide an upward force as the fuel tank is filled with fuel. A sensing subsystem is coupled to the arm and is operable to indicate continuously the amount of fuel in the fuel tank. The sensing subsystem may include a Wheatstone strain gauge, and the system may further include a microprocessor that coupled to the strain gauge to receive electrical signals corresponding to the upward force generated by the arm. A computer program provides instructions to the microprocessor to calibrate the arm according to preselected fuel-level conditions. The sensing subsystem may be located external to the fuel tank to limit the possibility of undesired igniting of the fuel.

主权项

1. A liquid level sensor system for use in a fuel tank, comprising:
an arm that is movable, and constructed to be sufficiently buoyant so that the arm will provide an upward force as the fuel tank is filled with fuel; a sensing subsystem coupled to the arm that is operable to indicate continuously the amount of fuel in the fuel tank.