Patent ID: 11946776
Assignee: 7-ELEVEN, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 15:
16. The circuit board of claim 14, wherein the processor is further configured to determine the position of the magnet along the length of the rack by:
detecting that the first sensor and the second sensor are positioned consecutive to each other on the longitudinal circuit board, which indicates that the magnet is positioned between the first sensor and the second sensor;
obtaining a first slope relating to a first signal response of the first sensor in relation to positions of the magnet between the first sensor and the second sensor;
calculating a third distance of the magnet from the first sensor by multiplying an inverse of the first slope to a first actual value corresponding to the first highest absolute value;
obtaining a second slope relating to a second signal response of the second sensor in relation to positions of the magnet between the second sensor and the first sensor;
calculating a fourth distance of the magnet from the second sensor by multiplying an inverse of the second slope to a second actual value corresponding to the second highest absolute value;
calculating a first intermediate value by adding the third distance to the first distance of the first sensor from the front end of the rack;
calculating a second intermediate value by subtracting the fourth distance from the second distance of the second sensor from the front end of the rack;
calculating a third intermediate value by adding the first intermediate value and the second intermediate value;
determining a fifth distance of the magnet from the front end of the rack by dividing the third intermediate value by two; and
determining the position of the magnet along the length of the rack based at least in part upon the fifth distance of the magnet from the front end of the rack.