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公开(公告)号：US10261724B2
公开(公告)日：2019-04-16
申请号：US15411604
申请日：2017-01-20
Inventor： Yibing Liang , Kaiwen Feng , Bocong Liu , Zhuo Chen , Yu Ma , Wei He
Abstract: This disclosures discloses a method and apparatus for acquiring data in a robot operating system. A specific implementation of the method includes: monitoring in real time a data storage area of an information acquirer, the information acquirer configured to acquire location state data of a driverless vehicle; obtaining updated data if the updated data are present in the data storage area; and storing the updated data into a data buffer corresponding to the information acquirer. The implementation improves the robustness of the data.
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公开(公告)号：US20180077230A1
公开(公告)日：2018-03-15
申请号：US15409753
申请日：2017-01-19
Inventor： Haifeng Wang , Wei He , Yu Ma , Weide Zhang , Zhuo Chen , Jingchao Feng
CPC classification number: H04L67/1029 , H04L41/0668 , H04L43/0817 , H04L43/10 , H04L67/1023 , H04L67/1034 , H04L67/1095
Abstract: The present application discloses a method and apparatus for switching between servers in a server cluster. The server cluster includes at least one server for implementing a given service. A specific implementation of the method includes: detecting a number of servers in a standby state in the server cluster; starting at least one server in the server cluster so that the number of servers in the standby state reaches a predetermined number, in response to detecting the number of servers in the standby state being less than the predetermined number; monitoring a master server for providing a service in the server cluster; and selecting a server from the servers in the standby state as a master server to continue to provide the service, in response to detecting the master server being abnormal. This implementation solves the data loss problem caused by an abnormal termination or restart of the master server.
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公开(公告)号：US20180074176A1
公开(公告)日：2018-03-15
申请号：US15411927
申请日：2017-01-20
Inventor： Kaiwen Feng , Zhuo Chen , Bocong Liu , Chengliang Deng , Yibing Liang , Haifeng Wang
IPC: G01S7/497
CPC classification number: G01S7/497 , G01S7/4808 , G01S17/42 , G01S17/89 , G01S17/936
Abstract: A motion compensation method and apparatus applicable to laser point cloud data includes acquiring laser point cloud data of a frame; using an acquisition time of a start point as a target time; interpolating coordinate transformation relations and an end laser point, to obtain coordinate transformation relations of other laser points, and transforming coordinates of the other laser points to the coordinates at the target time. During motion compensation on each frame of laser point cloud data, the coordinate transformation relations corresponding to only the start and end laser points are obtained, and the coordinate transformation relations corresponding to the two points are interpolated to obtain transformation relations corresponding to other laser points, thus performing motion compensation. Therefore, the processing speed is improved and meets high real-time requirements on systems such as autopilot control systems.
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公开(公告)号：US20180073858A1
公开(公告)日：2018-03-15
申请号：US15411911
申请日：2017-01-20
Inventor： Chengliang Deng , Yu Ma , Kaiwen Feng , Yibing Liang , Bocong Liu , Zhuo Chen
IPC: G01B11/00
CPC classification number: G01B11/002 , G01B11/24 , G01S1/00 , G01S7/486 , G01S7/4912 , G01S17/42 , G01S17/89 , G01S17/93
Abstract: A method and an apparatus for processing laser point cloud data includes obtaining laser point data to be used by a data receiver comprising an acquisition time; determining a timestamp for representing the acquisition time, and splitting the timestamp into a base timestamp and an offset timestamp; and storing the base timestamp and compressed laser point cloud data. Laser point cloud data output by a laser radar is compressed and comprises only offset timestamps corresponding to respective laser points. The base timestamp and the offset timestamp may be added to obtain the required synchronization precision timestamp, and the data is synchronized. The processing speed of a CPU or GPU for the laser point cloud data is improved while the timestamp precision reaches the precision required by synchronization of the laser point cloud data, and storage space is saved.
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公开(公告)号：US20180065575A1
公开(公告)日：2018-03-08
申请号：US15410451
申请日：2017-01-19
Inventor： Wei He , Haifeng Wang , Yu Ma , Chengliang Deng , Weide Zhang , Zhuo Chen
IPC: B60R16/023 , G08B29/12 , G05D1/00 , G07C5/08 , G07C5/00
CPC classification number: B60R16/0232 , G05D1/0088 , G07C5/008 , G07C5/0841 , G08B29/12
Abstract: The present application discloses a monitoring method and apparatus. A specific implementation of the method comprises: reading information about monitoring data acquisition methods of monitored objects, the monitoring data acquisition method comprising an active acquisition method and a passive acquisition method; executing following steps for each of the monitored objects having the active acquisition method as the monitoring data acquisition method: generating a monitoring data acquisition task of the monitored object; determining a monitoring data acquisition frequency of the monitored object; and adding the monitoring data acquisition task to to-be-executed monitoring data acquisition task sets in a defined period corresponding to the monitoring data acquisition frequency; executing, in successive defined periods, monitoring data acquisition tasks in the corresponding to-be-executed monitoring data acquisition task sets; and parsing acquired monitoring data of the monitored objects to generate a monitoring result. The implementation solves the problem of high system resource occupation and waste of system resources during the monitoring process.
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Patent Agency Ranking
公开(公告)号：US20180052783A1
公开(公告)日：2018-02-22
申请号：US15410680
申请日：2017-01-19
Inventor： Liming Xia , Jingchao Feng , Quan Wang , Ning Qu , Wei He , Chengliang Deng , Kaiwen Feng , Zhuo Chen
IPC: G06F13/16 , G06F12/1072 , G06F12/02
Abstract: The present application discloses a method and an apparatus for transmitting a message. The method of an embodiment comprises: dividing a shared memory area allocated by an operating system into a plurality of memory blocks for storing messages having different priorities; dividing each memory block in the plurality of memory blocks into at least one memory unit having a successive serial number; determining, from the plurality of memory blocks according to a priority of a to-be-transmitted message, a target memory block for storing the to-be-transmitted message; and writing the to-be-transmitted message into a memory unit of the target memory block. This embodiment implements message transmission based on priorities of the messages, and improves the control security of an intelligent control system.
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公开(公告)号：US11126639B2
公开(公告)日：2021-09-21
申请号：US15409967
申请日：2017-01-19
Inventor： Haifeng Wang , Wei He , Yu Ma , Weide Zhang , Liming Xia , Zhuo Chen
IPC: G06F17/00 , G06F7/00 , G06F16/27 , B60R16/023
Abstract: This present application discloses a method and apparatus for synchronizing data in a robot operating system. A specific implementation of the method includes: detecting an operation on data being transmitted between communication processes, wherein the operation includes at least one of updating the data, deleting the data, and storing the data; determining whether the data are persistent data, in response to positively detecting an operation on the data being transmitted between the communication processes; and transmitting a change message of the data to communication processes other than the communication processes in response to positively determining that the data are persistent data. In the embodiment, the persistent data may always remain consistent across the communication processes.
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公开(公告)号：US10069696B2
公开(公告)日：2018-09-04
申请号：US15410614
申请日：2017-01-19
Inventor： Yibing Liang , Bocong Liu , Zhuo Chen , Wei He , Chengliang Deng , Kaiwen Feng
Abstract: The present application discloses a data acquisition method and apparatus for a driverless vehicle. A specific implementation of the method comprises: selecting a sensor having the highest importance level among at least one sensor of the driverless vehicle as a first sensor and at least one sensor other than the first sensor to forma second sensor set; acquiring a start time of a current time window, and executing the following data processing steps: executing real-time acquiring and storing operations on data packets collected by each sensor among the at least one sensor after the start time of the current time window; determining whether any condition in the following condition group is met; and in response to determining that any condition in the condition group is met, setting the start time of the current time window to the current time, and continuing executing the data processing steps. This implementation realizes synchronized storage of the data packets collected by the at least one sensor of the driverless vehicle.
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公开(公告)号：US09935651B1
公开(公告)日：2018-04-03
申请号：US15410642
申请日：2017-01-19
Inventor： Wei He , Liming Xia , Yu Ma , Kaiwen Feng , Yibing Liang , Zhuo Chen
Abstract: The present application discloses a data transmission method and apparatus. A specific implementation of the method includes: receiving to-be-transmitted data sent from an information sending end, and determining a sending coding type of the to-be-transmitted data; determining a receiving coding type of an information receiving end receiving the to-be-transmitted data; converting the to-be-transmitted data from the sending coding type to the receiving coding type using a preset transcoding model, to obtain transcoded transmission data, the transcoding model representing a corresponding relationship between the sending coding type and the receiving coding type; and sending the transcoded transmission data to the information receiving end. This implementation improves the data transmission efficiency.
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公开(公告)号：US20180067878A1
公开(公告)日：2018-03-08
申请号：US15409930
申请日：2017-01-19
Inventor： Jingchao Feng , Liming Xia , Quan Wang , Ning Qu , Zhuo Chen , Yu Ma , Haifeng Wang , Yibing Liang
IPC: G06F13/16 , G06F12/1072 , G06F12/02
CPC classification number: G06F13/1663 , G06F12/023 , G06F12/084 , G06F12/0842 , G06F12/1072 , G06F2212/1044
Abstract: The present application discloses a method and an apparatus for transmitting information. A specific implementation of the method includes: sending first information to be transmitted to a shared memory; traversing memory groups in the shared memory, and acquiring a first memory unit suitable for the amount of the first information, each of the memory groups including at least one memory unit, each of memory units in the memory group having an identical size, and the memory units in different memory groups having different sizes; and storing the first information into the acquired first memory unit, so that the first information is read from the first memory unit by a receiving node. Through this implementation, the first information that needs to be transmitted is stored into the memory unit suitable for the amount of the first information, thereby saving memory resources.
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