US Patent Issued to National Institute of Metrology, China on Nov. 11 for "On-site reciprocity calibration method for piezoelectric accelerometer" (Chinese Inventors)

ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,467,942, issued on Nov. 11, was assigned to National Institute of Metrology, China (Beijing).

"On-site reciprocity calibration method for piezoelectric accelerometer" was invented by Chenguang Cai (Beijing), Ping Yang (Beijing) and Zhihua Liu (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "An on-site reciprocity calibration method for a piezoelectric accelerometer, including a vibration test and a reciprocity test. In the vibration test, a sine excitation with a corresponding frequency and amplitude is provided by a vibration exciting device to the piezoelectric accelerometer fixed on a motion plane, and output signals of a drive port and a sign...