ApplicationNo. 06/697000 filed on 01/31/1985
US Classes:340/870.31, Inductive transmitter324/207.2, Hall effect340/870.02With meter reading
ExaminersPrimary: Caldwell, Sr., John W.
Assistant: Queen, Tyrone
Attorney, Agent or Firm
International ClassesG01D 4/00 (20060101)
G01D 5/14 (20060101)
G01D 5/12 (20060101)
AbstractThe present invention relates to a magnetic sensor apparatus (21) for use in a remote meter monitoring system (20) for remotely monitoring the dials (54a-e) of a utility meter (56) by use of Hall Effect devices (40-49). The Hall Effect devices (40-49) are concentrically positioned about the axis of rotation of a pointer member (64) having a permanent magnetic member (66) attached to a free end thereof. The Hall Effect devices (40-49) are axially displaced from the permanent magnetic member (66) and are in alignment with the circumferential path of travel of the permanent magnetic member (66). A microprocessor (68) electrically interconnected to the Hall Effect devices (40-49) selectively drives each of the Hall Effect devices (40-49). The microprocessor (68) further monitors the Hall Effect devices (40-49) and obtains output signals therefrom representative of the angular position of the pointer member (64).
Field of SearchInductive transmitter