Patent ID: 6597168
Filing Date: 2003-07-22
Classification: G01D

Abstract:
A less current consuming non-contact type 2-channel rotary positioning sensor, comprising:a housing with a base that has a receipt seat formed on the base; a cover with sensor mounting holes and a through hole for covering the housing; a rotating body having a base, an end that sits on the receipt seat of the housing, a middle flange joined to a circumference of the through hole of the cover to be supported in a rotatable manner within the housing, and a top end formed with a coupling slot; a rotary shaft having one end coupled with the rotating body by a coupling protuberance inserted into the coupling slot and another end coupled with a rotary object to be measured; a permanent magnet inserted into the base of the rotating body, sensing bars with interposed hall elements, placed in parallel around the base of the rotating body to detect the permanent magnet in the base of the rotating body; and a PCB accommodating comparators, a microprocessor, and photocouplers placed in the housing for accepting a signal from hall elements that are interposed with the sensing bars.