초록 ▼

A sensing method continuously scans an array of sensing elements and determines positions by converting array peak amplitude information to a time based function. An array of magneto resistive elements responds to a relatively moving magnetic field. The process of scanning the magneto resistive elem

A sensing method continuously scans an array of sensing elements and determines positions by converting array peak amplitude information to a time based function. An array of magneto resistive elements responds to a relatively moving magnetic field. The process of scanning the magneto resistive elements is independent of the relatively moving magnetic field. Instead of using only one voltage source to power both the driving logic circuitry and the sensing element array, a separate voltage source for powering the sensing element array is used in conjunction with the solid switch array, thus excluding unwanted noise that originates in the driving logic circuitry.

대표청구항 ▼

[ We claim:] [1.] A sensing method of detecting a relative position, including positioning a fixed giant magneto resistive (GMR) sensing element array adjacent a moving magnetic element activation source, comprising:using a first voltage source to provide power to a shift register coupled to the GMR

[ We claim:] [1.] A sensing method of detecting a relative position, including positioning a fixed giant magneto resistive (GMR) sensing element array adjacent a moving magnetic element activation source, comprising:using a first voltage source to provide power to a shift register coupled to the GMR sensing array and a second voltage source to provide Power for the GMR sensing element array;using a solid switch array to connect the GMR sensing element array to a load resistor;using a logic arrangement that scans GMR sensing element array output;using an analog signal processor to prepare scan generated information; andusing a signal logic decoding system to convert the output of the analog signal processor to indicate a relative position between the activation source and the GMR sensing element array.