US 12,222,392 B2
Motor malfunction monitoring device, drive motor system and motor malfunction
Kaishen Liu, Yantai (CN); Shouzhe Li, Yantai (CN); Haiping Xing, Yantai (CN); Zhuqing Mao, Yantai (CN); Weiwei Liu, Yantai (CN); Liang Li, Yantai (CN); Dawei Zhao, Yantai (CN); and Jun Zhang, Yantai (CN)
Assigned to YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO., LTD., Yantai (CN)
Filed by YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO., LTD., Shandong (CN)
Filed on Apr. 19, 2023, as Appl. No. 18/303,181.
Application 18/303,181 is a continuation of application No. 17/155,966, filed on Jan. 22, 2021, granted, now 11,662,384.
Claims priority of application No. 202011273318.9 (CN), filed on Nov. 13, 2020; and application No. 202022639085.1 (CN), filed on Nov. 13, 2020.
Prior Publication US 2023/0251314 A1, Aug. 10, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G01R 31/34 (2020.01); E21B 41/00 (2006.01); G08B 21/18 (2006.01); H02P 29/024 (2016.01)
CPC G01R 31/343 (2013.01) [E21B 41/00 (2013.01); G08B 21/185 (2013.01); H02P 29/024 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A motor malfunction monitoring device for monitoring a malfunction of a drive motor, comprising:
vibration sensors for detecting in one or more components of the drive motor transverse vibration in a direction parallel to a mounting plane of the drive motor and perpendicular to a longitudinal direction of the drive motor and longitudinal vibration in a direction perpendicular to both the mounting plane and the longitudinal direction of the drive motor;
a voltage sensor for detecting a voltage of the drive motor or a current sensor for detecting a current of the drive motor; and
a data storage storing a database of normal operation spectrums of one of the transverse vibration or the longitudinal vibration during a normal operation of the drive motor, and of one of the voltage or the current during a normal operation of the drive motor;
wherein the motor malfunction monitoring device is configured to acquire operation data of the drive motor, extract acquired operation data spectrums of the acquired operation data, compare the acquired operation data spectrums with corresponding normal operation spectrums to obtain a similarity, and when the similarity is lower than a predetermined threshold, determine that the drive motor fails; and
wherein the data storage stores a database of known malfunction spectrums of different types of malfunctions of the drive motor, and the motor malfunction monitoring device is further configured to, when determining that the drive motor fails, compare the acquired operation data spectrums with the known malfunction spectrums and determine a malfunction type of the drive motor.