公开(公告)号：US20240369666A1

公开(公告)日：2024-11-07

申请号：US18640788

申请日：2024-04-19

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： Zhi LIU ,  Wu CHEN ,  Ting SONG ,  Liansheng HAN ,  Jinxi GU ,  Jun SUN

IPC: G01R35/00 ,  G01R15/18 ,  G01R15/20 ,  G01R19/25

Abstract: A self-calibrating current measuring apparatus comprising a low-range current sensor configured to generate first voltage signals, a high-range current sensor configured to generate second voltage signals, and a self-calibration current measuring circuit configured to: receive the first voltage signals and the second voltage signals, convert the first voltage signals and the second voltage signals into respective first digital signals and second digital signals, compare the first digital signals with the second digital signals, determine a difference between the first digital signals and the second digital signals exceed a recalibration threshold based on the comparison, generate calibration data based on the determination, and generate a digital output signal representative of a current reading based on an application of the calibration data to the second digital signals.