Hall encoder-based travel sensor and travel measurement method thereof
A stroke sensor and circuit technology, which is applied in the field of stroke sensors, can solve the problems of low precision and short service life of stroke sensors, and achieve the effects of improved resolution, no mechanical wear, and high resolution
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[0036] The present invention will be further described below in conjunction with the accompanying drawings.
[0037] Such as figure 1 As shown, the present invention includes a non-magnetic metal material, such as a metal pipe 1 made of stainless steel, and a magnetic ring 2 matching the outer diameter of the metal pipe is sleeved on the metal pipe 1, and the magnetic ring 2 is magnetized by the axial direction. Made of ferrite, the magnetic ring 2 is installed on a moving part that can move with the stroke. When the stroke changes, the moving part drives the magnetic ring 2 to slide along the outer wall of the metal pipe. The magnetic induction of the magnetic ring 2 can trigger nearby n consecutive Hall circuits to be in the on state, while other Hall circuits are in the off state; wherein, n≥3. According to actual needs, the number of Hall circuits that can be triggered simultaneously can be adjusted by adjusting the size of the magnetic ring 2 . A double-sided printed bo...
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