CONTACTLESS MAGNETIC SENSOR FOR DETERMINATION OF THE LINEAR POSITION OF A MOVING BODY
The invention relates to a magnetic sensor for determination of the linear position of a moving body (2), moving in a linear fashion along a translation axis. The sensor comprises a measuring cell, arranged in a magnetic circuit, for measuring the variations in the value of the magnetic induction flux as a result of variations in the reluctance of the magnetic circuit. According to the invention, the sensor comprises a single fixed magnetic circuit between two fixed poles, defining a variation gap (4), in which at least one magnetic induction extends along a length parallel to the translation axis and at least equal to the track of the moving body for measurement is generated, said variation gap (4) being embodied to permits the linear movement of the moving body (2) which is provided with means for altering the reluctance of said variation gap, mechanically independent of said sensor and a measuring gap (7) in which the measuring cell is arranged.