Abstract: This disclosure provides an energy storage apparatus, an energy storage apparatus control method, and a photovoltaic system. The energy storage apparatus includes: a plurality of battery clusters, a plurality of conversion units, a start unit, and a controller. The controller includes a plurality of control units. The start unit is configured to: after receiving a start signal, control a control switch in at least one battery cluster to close, to start a control unit corresponding to the battery cluster. The control unit is configured to: determine, based on a state of the control switch in the battery cluster, whether a black start mode is on; and when determining that the black start mode is on, control a DC-DC converter in the corresponding conversion unit to release electric energy stored in a battery pack in the corresponding battery cluster, to energize a direct current bus.

Abstract: A battery system comprises a first busbar, at least one battery rack, and a control circuit are included. The battery rack includes a plurality of battery units. Each battery unit includes a battery module, a connection switch K1, and an isolation switch K2. The connection switch K1 is connected in series to the battery module to form a first branch, and the isolation switch K2 is connected in parallel to the first branch. The control circuit is connected to control ends of the connection switch K1 and the isolation switch K2, and is configured to: control, based on a first voltage required by the load, connection switches K1 and isolation switches K2 of N battery units in the battery rack, to make an output voltage of the first busbar meet the first voltage required by the load.

Abstract: A wafer transfer device, a wafer transfer method and a cleaning module of a chemical mechanical planarization machine are provided. The wafer transfer device comprises: at least one claw clamping arm module for picking up and placing a wafer; at least one Z-axis moving module, connected to the claw clamping arm module, for performing a movement of the claw clamping arm module in a Z-axis direction; and at least one X-axis moving module, connected to a lower end of the Z-axis moving module, for performing a movement of the claw clamping arm module in a X-axis direction.

Abstract: A wafer conveying device, a chemical-mechanical planarization device and a wafer conveying method; the wafer conveying device comprises a manipulator used to clamp and transport wafers, as well as a transfer platform used to place the wafers; the manipulator consists of a 1st claw, a 2nd claw, a lifting platform, a movement mechanism, a rotation mechanism and a control mechanism; the transfer platform consists of a 1st transfer platform, a 2nd transfer platform and an installation rack. During wafer transmission, dry-wet wafers separation can be realized to avoid contamination to the clean wafers caused by liquids such as polishing liquid carried by the polished wafers, and to improve yield rate of the wafers.

Abstract: The present disclosure provides a method and an apparatus for updating road network data. The method for updating the road network data is specifically implemented as follows: acquiring trajectory data reported by a terminal; determining a plurality of out-of-road trajectories within a preset area coverage according to the trajectory data; determining a fitting trajectory according to the plurality of out-of-road trajectories; and updating existing first road network data according to the fitting trajectory to acquire second road network data.

Abstract: A method, an apparatus, an electronic device and a storage medium for displaying an AR navigation are provided. The method may include: recognizing a navigation scene at a current moment during an AR navigation; determining, according to a preset mapping relationship between a navigation scene and a service function, a current service function corresponding to the navigation scene at the current moment; and displaying the current service function corresponding to the navigation scene at the current moment in the navigation scene at the current moment. According to embodiments of the present disclosure, different service functions may be flexibly displayed for different navigation scenes. Therefore, a multi-channel output in the different navigation scenes may be realized, thus saving maintenance time and a maintenance cost.

Abstract: Embodiments of the present disclosure provide a method and an apparatus for adjusting on-vehicle projection, a device, and a storage medium. The method includes the following features. A face image of the driver captured by the on-vehicle imager is obtained. A projection position of an on-vehicle projection device is determined based on the face image of the driver, a parameter of the on-vehicle imager and an installation position of the on-vehicle projection device.

Abstract: A method, an apparatus, an electronic device and a storage medium for displaying an AR navigation are provided. The method may include: recognizing a navigation scene at a current moment during an AR navigation; determining, according to a preset mapping relationship between a navigation scene and a service function, a current service function corresponding to the navigation scene at the current moment; and displaying the current service function corresponding to the navigation scene at the current moment in the navigation scene at the current moment. According to embodiments of the present disclosure, different service functions may be flexibly displayed for different navigation scenes. Therefore, a multi-channel output in the different navigation scenes may be realized, thus saving maintenance time and a maintenance cost.

Abstract: A method, an apparatus, a device, and a medium for calibrating a temperature drift are provided. The method includes: acquiring a first measurement value and a second measurement value, the first measurement value being a measurement value of a to-be-measured quantity at a current moment determined based on an inertial measurement unit, and the second measurement value being a measurement value of the to-be-measured quantity at the current moment determined based on a global positioning system; and determining a temperature drift calibration value of the inertial measurement unit at the current moment based on the first measurement value and the second measurement value.

Abstract: The present disclosure provides a method and an apparatus for updating road network data. The method for updating the road network data is specifically implemented as follows: acquiring trajectory data reported by a terminal; determining a plurality of out-of-road trajectories within a preset area coverage according to the trajectory data; determining a fitting trajectory according to the plurality of out-of-road trajectories; and updating existing first road network data according to the fitting trajectory to acquire second road network data.

Abstract: A method, an apparatus, an electronic device and a storage medium for displaying an AR navigation are provided. The method may include: recognizing a navigation scene at a current moment during an AR navigation; determining, according to a preset mapping relationship between a navigation scene and a service function, a current service function corresponding to the navigation scene at the current moment; and displaying the current service function corresponding to the navigation scene at the current moment in the navigation scene at the current moment. According to embodiments of the present disclosure, different service functions may be flexibly displayed for different navigation scenes. Therefore, a multi-channel output in the different navigation scenes may be realized, thus saving maintenance time and a maintenance cost.

Abstract: The present disclosure provides a real scenario navigation method and apparatus, a device and a computer readable storage medium. In the embodiments of the present disclosure, it is feasible to obtain the travel manner, the query starting point, the query finishing point and the destination provided by the user, and then perform navigation map-based first travel manner path planning, according to the travel manner, the query starting point and the query finishing point so that it is feasible to perform real-scenario image-based second travel manner path planning, according to the query finishing point and the destination, if the user reaches the query finishing point and a distance between the query finishing point and the destination is smaller than or equal to a preset distance threshold.

Abstract: Embodiments of the present disclosure provide a method and an apparatus for adjusting on-vehicle projection, a device, and a storage medium. The method includes the following features. A face image of the driver captured by the on-vehicle imager is obtained. A projection position of an on-vehicle projection device is determined based on the face image of the driver, a parameter of the on-vehicle imager and an installation position of the on-vehicle projection device.

Abstract: An automatic calibration method for an onboard camera is provided, the automatic calibration method includes: receiving a calibration start command, by a vehicle equipped with the onboard camera at a predetermined position; capturing an image of a target with the onboard camera, and calibrating a parameter of the onboard camera according to the captured image; and in a case that the onboard camera is calibrated, automatically writing the calibrated parameter of the onboard camera into a configuration file.

Abstract: The present disclosure provides a real scenario navigation method and apparatus, a device and a computer readable storage medium. In the embodiments of the present disclosure, it is feasible to obtain the travel manner, the query starting point, the query finishing point and the destination provided by the user, and then perform navigation map-based first travel manner path planning, according to the travel manner, the query starting point and the query finishing point so that it is feasible to perform real-scenario image-based second travel manner path planning, according to the query finishing point and the destination, if the user reaches the query finishing point and a distance between the query finishing point and the destination is smaller than or equal to a preset distance threshold.

Abstract: Disclosed are a security verification method, apparatus, and terminal. The method includes: acquiring a first verification code and prompting the first verification code, the content of the first verification code describing scenario information that is simple for a user to understand, and triggering the user to send a second verification code over a user terminal; receiving the second verification code, and acquiring an ID of the user terminal sending the second verification code; and obtaining a security verification result according to two verification results of the second verification code and the corresponding ID. A first verification code describing scenario information that is simple for a user to understand is displayed such that the user understands the scenario information corresponding to the first verification code and unauthorized users are prevented from stealing the verification codes using similar websites.

Abstract: A synthesis method for degradable material(s) (DM) which can be used in oil and gas field operations. The method involves using two, three, four or five polymer and chain extenders, including poly glycolic acid (PGA), polycaprolactone (PCL), polylactic acid (PLA), poly (butylene succinate) (PBS) and poly(3-hydroxybutyrate) (PHA), to synthesize a “resin alloy” through the melt mixing reaction method, which can be used in oil and gas field operations. The proposed DM can be prepared into flake, powder, granules, and ball shapes, or by one of the pure PGA, PCL, PLA, PBS and PHA, into flake, powder, granule and ball shapes, which can be further used in all kinds of operations (drilling, well completion, workover and acidizing fracturing) in oil and gas fields, such as temporary plugging to protect a reservoir, temporary plugging of perforation holes, construction intervals, etc. The DMs are fully degradable and cause almost no damage to formations.

Abstract: A method and apparatus for obtaining multimedia point of interest includes: obtaining a redirection request for multimedia, and collecting redirection time that is included in the redirection request; segmenting a time period of the multimedia with a predetermined interval, to be multiple time sections; obtaining a number of time sections that have most recorded redirection time; and recording time points that are corresponding to locations of recorded redirection times of the obtained number of time sections, thereby effectively reducing workload and improve efficiency for obtaining multimedia point of interest