Inductive sensor assembly for fluid measurements

An oil pan assembly comprising:

• a container configured to contain oil;
• a sensor assembly mounted within the container, the sensor assembly comprising:
• a sealed housing;
• a substrate including a first section that includes processing circuitry disposed within the sealed housing and a second section that includes detection circuitry extending from the sealed housing into the container, the second section of the substrate includes a first side and a second side, the detection circuitry includes a first detection circuitry disposed on the first side of the substrate and a second detection circuitry identical to the first detection circuitry and disposed on the second side of the substrate;
• and
• a float having a conductive target coupled to the second section of the substrate within the container to move along the second section as an oil level of the oil within the container varies.

A sensor assembly comprising:

• a sealed housing;
• a printed circuit board assembly including a first section that includes processing circuitry disposed within the sealed housing and a second section extending from the sealed housing, the second section includes a first side that includes first detection circuitry and a second side that includes second detection circuitry identical to the first detection circuitry;
• a conductive target movably surrounding the second section of the printed circuit board to vary net voltage of the first detection circuitry and second detection circuitry as the conductive target moves along the second section to provide an output signal;
• wherein the processing circuitry determines the output signal and converts the output signal into a linear representation of position of the conductive target in relation to the second section;
• and
• wherein the conductive target is configured to move along an axis between a first target position and a second target position, wherein a dimension of the conductive target measured along the axis is between 15% and 30% of a distance between the first and second target positions.

A sensor assembly comprising:

• a sealed housing;
• processing circuitry disposed within the sealed housing;
• detection circuitry extending from the sealed housing, the detection circuitry being secured to and extending along a substrate;
• and
• a conductive target movably coupled to the substrate to vary net voltage of the detection circuitry as the conductive target moves along the substrate to provide an output signal;
• and
• wherein the processing circuitry determines the output signal and converts the output signal into a linear representation of position of the conductive target in relation to the substrate, the sealed housing is configured to couple to an opening of a fluid container assembly and the substrate and the conductive target are configured to be disposed within a volume of the fluid container assembly, the fluid container assembly is an oil pan and the substrate and the conductive target are configured to be disposed within a dip-stick channel of the oil pan.