Baidu Online Network Technology (beijing) Co., Ltd.

Beijing Jingdong Shangke Information Technology Co., Ltd.

Beijing Jingdong Century Trading Co., Ltd.

Air-sys Refrigeration Engineering Technology (beijing) Co., Ltd

Apollo Intelligent Driving Technology (beijing) Co., Ltd.

Baidu Online Network Technology Co., Ltd.

Xiaolong Yang

Shiyu Song

Fangfang Dong

Renlan Cai

Bo Zhang

Bo Wu

Guowei Wan

Weixin Lu

Baoqiang Xu

Shichun Yi

Yunshui Chen

Jingsen Zheng

Wenbin Luo

Wanyuan Yang

The present disclosure provides an integrated positioning method and system. The method comprises: receiving IMU data, and solving for the IMU data in a first Kalman filter to obtain a system state variable of an autonomous vehicle; receiving and buffering measurement data, and regarding the measurement data as current measurement data; performing measurement updating: obtaining the system state variable at a measurement time of current measurement data, and solving in the second Kalman filter to obtain an updated system state variable; if measurement data after the measurement time of the measurement data is already buffered, regarding the already-buffered measurement data after the measurement time as current measurement data, and performing the measurement update. The present disclosure can solve the problem about measurement information disorder caused by inconsistency of time delay in solving between different sensors, and improve real time and accuracy of the positioning.

Integrated positioning method and system

The present disclosure discloses a method and apparatus for positioning a vehicle. In some embodiments, the method comprises: acquiring an a priori position of a to-be-positioned vehicle at a current positioning moment determined by performing a strapdown calculation between a previous positioning moment and the current positioning moment; determining a map area for searching in a laser point cloud reflected value map; matching a reflected value characteristic of a projection area generated by projecting a real-time laser point cloud, to obtain a map matching position according to a matching result; positioning, using the a priori position in combination with observation data of a vehicle-mounted global navigation satellite system (GNSS) receiver of the vehicle, to obtain a satellite positioning position; and fusing the a priori position, the map matching position and the satellite positioning position to generate a positioning result of positioning the vehicle at the current moment.

Method and apparatus for positioning vehicle

The present disclosure provides a method and a device for positioning, an apparatus and a computer readable storage medium. The method includes acquiring a visual feature map of a geographic area located by a movable object. The visual feature map includes a first set of visual features. The method further includes acquiring at least one image captured by a camera coupled to the movable object during a motion of the movable object within the geographic area. The method further includes extracting a second set of visual features corresponding to the first set of visual features from the at least one image. In addition, the method further includes determining at least one pose of the movable object during the motion at least based on the visual feature map and the second set of visual features.

Method and device for positioning

Provided are a data replica storage method, a terminal apparatus, and a server apparatus, which help to improve the reliability of a distributed data storage system without a central node and reduce an amount of migrated data when the number of nodes of the system changes. The method comprises: for each data replica to be stored, selecting child nodes level by level from a pre-selected intermediate node until a leaf node according to a tree-structured a distributed data storage system without a central node, and determining the leaf node as a target storage position of the data replica, selection of a child node comprising: combining an identification of data to be stored and an identification of a child node into a host image, obtaining a mapping value related to the child node using a preset mapping mode, selecting a sub-node of a central node according to the mapping value, and resetting a mapping relationship before each time when the child node is selected; and storing all data replicas to be stored at the target storage positions of the data replicas.

Data copy storage method, terminal apparatus, and server apparatus

The present invention provides a protection device for air filter, which includes a dust sensor and an air filter protector, wherein, the air filter protector includes: a dust concentration comparator adapted for comparing a level signal transmitted by the dust sensor to represent a particle concentration of dust or smoke with a reference level, so as to output a positive or negative pulse signal according to a result of the comparison; a first inverter; a pulse generator and adapted for inverting a pulse signal outputted by the first inverter; a filtering comparator adapted for converting an output of the pulse generator into a high or low level signal; a relay switch adapted for performing on or off action according to the output of the filtering comparator, so as to control opening and closing of an air valve of the air filter.

Protection device for air filter

Growing community of inventors

Beijing, China

Xiaolong Yang