公开(公告)号：US20220011356A1

公开(公告)日：2022-01-13

申请号：US17486506

申请日：2021-09-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Chen WANG ,  Xiaowei XIE ,  Yang HU

IPC: G01R27/02 ,  G01R27/08 ,  G01R27/18 ,  G01R31/42 ,  G01R31/52 ,  H02S40/32 ,  H02M7/44 ,  H02J3/38

Abstract: An insulation resistance detection circuit and method are disclosed. The circuit includes a controller configured to: open a first relay, and close second relays, or switch an on/off status of at least one of the second relays; determine, based on a first measurement value between a positive input terminal of an inverter circuit and an earthing point, whether the positive input terminal of the inverter circuit is short-circuited or has low resistance to protective earthing; and determine, based on a second measurement value between a negative input terminal of the inverter circuit and the earthing point, whether the negative input terminal of the inverter circuit is short-circuited or has low resistance to protective earthing, where the first relay is one of in M relays and is connected to at least one impedor in parallel, and the second relays are relays other than the first relay in the M relays.

公开(公告)号：US20200372039A1

公开(公告)日：2020-11-26

申请号：US16990640

申请日：2020-08-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yang HU ,  Zan ZHANG ,  Zemin LI

IPC: G06F16/25 ,  G06F16/2458 ,  G06F16/22 ,  H04L29/08

Abstract: Embodiments of the present invention disclose a data processing method including: obtaining, by a distribution server, original data, determining a target type of the original data, determining, based on the target type, a target computing server to which the original data belongs, and sending the original data of the target type by sending a data storage request to the target computing server; and receiving, by the target computing server, the data storage request sent by the distribution server, storing the original data of the target type, and each time a preset aggregation period is reached, determining aggregated data of the target type in a current aggregation period based on original data of the target type that is received in the current aggregation period. By using the present method, efficiency of data statistics processing can be improved.