22results about How to "Solve the delay problem" patented technology

The pull-type transient electromagnetic detection system comprises a detection module, a detection assembly comprises a transmitting coil, a receiving coil and a host, the transmitting coil and the receiving coil are arranged in parallel, the height between the transmitting coil and the receiving coil is adjustable, one end of the host is connected with the transmitting coil, and the other end of the host is connected with the receiving coil. The horizontal relative position of the receiving coil and the transmitting coil can also be adjusted, the position of the receiving coil is determined when the mutual inductance of the transmitting coil and the receiving coil is zero, the signal processing module comprises an amplifier and a noise processing module, and the receiving coil, the amplifier, the noise processing module and the host are sequentially connected. Signal processing is carried out through the following steps: 1, coil laying; 2, setting an amplifier circuit; 3, electromagnetic noise suppression; according to the invention, in the electromagnetic signal acquisition process and the electromagnetic signal processing process, the quality of the electromagnetic signal is improved, so that the electromagnetic signal with higher quality can be comprehensively obtained.

The invention discloses a data synchronization method, device and equipment and a medium, the method is applied to any target service node in a service cluster, and the method comprises the following steps: when the target service node is used as a candidate node, sending a main node election request to each survival service node in the service cluster, when election success responses fed back by all the survival service nodes are received, the candidate node is converted into the main node; when the target service node is used as a main node, sending a data acquisition request to each survival service node in the service cluster to acquire a consensus information version number fed back by each survival service node; and determining a first service node to which the latest consensus information belongs according to each consensus information version number, acquiring snapshot data of the latest consensus information from the first service node, and synchronizing the snapshot data to all survival service nodes in the service cluster. According to the scheme, the consistency of the consensus information in the service cluster can be accurately ensured on the premise of effectively ensuring the time delay performance of the system.

The invention discloses a phosphate-based low-dielectric LTCC (Low Temperature Co-Fired Ceramic) material and a preparation method thereof, the chemical expression of the phosphate-based low-dielectric LTCC material is Na2O-AO-MgO-xP2O5, A = Sr, Ca or Sr1-yCay, x is more than or equal to 1.0 and less than or equal to 1.2, and y is more than 0 and less than or equal to 0.2. The preparation process sequentially comprises the following steps: synthesizing LTCC ceramic powder, ball-milling, pressing and forming, and sintering to obtain the ceramic. The main crystal phase of the phosphate-based low dielectric LTCC material is Na2MMg (PO4) 2 (A = Sr, Ca or Sr1-yCay), and the phosphate-based low dielectric LTCC material has the advantages of low raw material cost, low sintering temperature (750-900 DEG C), low dielectric constant (8.2-9.3), high Qf value (41800-80310 GHz), simple preparation process, good reproducibility and the like, can solve the time delay problem of microwave signals in high-frequency communication, improves the stability of microwave signal transmission, and has good application prospects. The material is very suitable for being used as an LTCC microwave substrate, a dielectric antenna and other systems.

Embodiments of the present invention relate to the field of network technology, and specifically provide a control method, device, equipment and computer program product for message forwarding. The control method is applied to a data gateway, and the method includes: obtaining a data queue in the data gateway, the data queue includes messages to be forwarded, and the data queue corresponds to an area to be allocated for caching the messages to be forwarded; determining the load state of a processor, the processor is used to process the messages to be forwarded and dynamically allocate the area to be allocated; and controlling the allocation speed of the area to be allocated based on the load state. This embodiment effectively realizes that the allocation speed of the area to be allocated can be regulated based on different load states to alleviate the load level of the link, which can not only solve the problem of packet loss and long-tail delay caused by the blockage of the data queue, but also effectively improve the quality and efficiency of data forwarding processing, which is conducive to ensuring the online stability of network services.

The invention relates to the technical field of substations, and discloses an intelligent substation flexible configuration visual modeling analysis system which comprises a control center, a visual modeling module, a network topology modeling module, a flow model parameter setting module, a link flow management module, a flow visualization module, a link network time delay analysis module and an inspection module. The control center is respectively connected with the visual modeling module, the network topology modeling module, the flow model parameter setting module, the link flow management module and the link network delay analysis module, the link flow management module is also connected with the flow visualization module, and the control center is connected with the inspection module through the server. According to the method, visual modeling analysis is provided for intelligent substation equipment configuration modeling, flow model parameter setting, network topology modeling and link flow simulation monitoring, the problem of network delay is solved, the substation network structure is optimized, the stable operation level of substation equipment is improved, and technical support is provided for substation fault analysis.

The embodiment of the invention provides a container bottom lock detection method, device and system, and the method comprises the steps: responding to a quay crane, loading a container onto a container truck, and obtaining first detection information of carrying out the installation state detection of a bottom lock of the container through a first detection device; when it is determined that the installation state of the bottom lock is that the bottom lock exists according to the first detection information, second detection information obtained when a second detection device conducts position state detection on the bottom lock is obtained; when it is determined that the position state of the bottom lock accords with a preset position state according to the second detection information, a first indication message is sent to a container truck for transporting the container, and the first indication message is used for indicating the container truck to travel to the intelligent lock station from the quay crane position so as to pick up the bottom lock; and in response to completion of bottom lock picking by the intelligent lock station, a second indication message is sent to the container truck, and the second indication message is used for indicating the container truck to travel from the intelligent lock station to the transportation destination. Through the method, the transportation efficiency of the container can be improved.

A traffic control method and network system for service data backhaul, applied to a network system comprising N terminals and a gateway, wherein at least two terminals use different communication modes to perform service data backhaul operation with a server through the gateway, characterized in that the method obtains decision information of each time slot in a future preset period by time slot by time slot, and controls the data transmission operation of the terminal and the gateway based on the decision information, so that the weighted sum of the average transmission delay in the service data transmission process of each terminal and the average transmission delay in the service data forwarding process of the gateway is minimized in the entire preset period, effectively controlling the data queuing delay on the terminal side and the gateway side, and realizing efficient backhaul of data.

The invention provides a video coding method and device and electronic equipment, and relates to the technical field of video coding. The method comprises the following steps: in the process of carrying out partition coding on a target video sequence, if a motion region of the target video sequence is judged to change, switching a coding mode from a partition coding mode to a global coding mode; after the motion feature partition corresponding to the first video sequence is obtained, the coding mode is switched from the global coding mode to a partition coding mode; the first video sequence is a video sequence segment after first time in the target video sequence, and the first time is time for judging that a motion area of the target video sequence changes; and according to the motion feature partition, performing partition coding on the video sequence which is not coded in the target video sequence. According to the scheme of the invention, the coding partition of the video sequence can be adjusted in time, and the problem of partition coding failure caused by coding partition errors is avoided.

The present disclosure provides a door access security management system and method, the system includes a door access device, a first wireless communication device, a local gateway and a remote server. Among them, the door access device is arranged at the entrance and exit of the activity space to open or close the entrance and exit. The first wireless communication device arranged around the entrance and exit of the activity space is configured to communicate with the second wireless communication device carried by the supervised person. The remote server communicates with the local gateway and works in collaboration to perform anti-lost management, wherein the remote server is configured to obtain the custody data of the supervised person and transmit the obtained custody data to the local gateway. The local gateway is configured to obtain the location of the supervised person, determine whether the supervised person is about to leave or has left the allowed activity range, and control the door access device to close the entrance and exit to reduce the workload of the remote server and maintain stable communication of the management system.

The application relates to the field of power system data acquisition and edge computing, and discloses a multi-source heterogeneous data pre-acquisition and edge intelligent processing method, which comprises the following steps: using a modal division mechanism, combining the operation state of power equipment, and performing condition correction on an adaptive sampling frequency to obtain a corrected sampling frequency, so as to acquire multi-source heterogeneous data; extracting fusion core features from multi-dimensional feature vectors; substituting the fusion core features into a general fault judgment model and a time sequence prediction model to respectively output equipment fault prediction results and time sequence prediction results, and obtaining early warning information; based on the fusion core features, the early warning information and the equipment fault prediction results of each acquisition node, and combined with the Lymerzi complexity theory, the spatio-temporal coupling law is identified; and based on the spatio-temporal coupling law and the time sequence prediction results, edge end decision suggestions are provided for source-grid-load-storage collaborative regulation. The application effectively improves the power system data processing efficiency and the power grid operation and maintenance regulation level.

The present invention discloses a distribution network differential protection method based on dynamic time warping distance and floating threshold, comprising the following steps: Step 1: current sampling devices at both ends of the protected line in the distribution line perform current signal sampling at a fixed frequency; Step 2: when the current fault detection device detects that there is a sudden change current fault in the distribution line, the current sampling devices at both ends of the protected line collect the current signals within A milliseconds before the fault moment and within B milliseconds after the fault to form current sampling sequences i1 and i2; Step 3: after the normalized current sequence #imgabs0# is inverted, the DTW distance and the differential protection floating threshold braking threshold value are calculated with the normalized current sequence #imgabs1#; Step 4: Calculate whether the DTW distance and the differential protection floating threshold braking threshold value meet the judgment criteria. The present invention utilizes the good tolerance of the dynamic time warping algorithm to the time domain, and adds a floating threshold to prevent the false operation of the protection, thereby improving the reliability of the protection.

The embodiments of the present specification disclose a harvesting scheduling method, device and medium for combined operation of multiple agricultural machines, which relates to the field of smart agricultural technology and is used to solve the problems of low efficiency and high labor cost of harvesting and unloading methods in the prior art. The method includes: determining the harvesters to be operated for combined harvesting and the grain transport vehicles to be operated based on the basic information of the current farm; monitoring the storage information of the built-in storage bins of the harvesters to be operated based on preset sensors, so as to predict the unloading time of the harvesters to be operated based on the storage information and the storage preset positions of the harvesters to be operated; determining the harvesting posture data of the harvesters to be operated through multiple types of sensors, so as to predict the harvesting work area at the next moment; determining the unloading position according to the positional relationship between the harvesting component and the unloading component; generating an unloading scheduling instruction according to the unloading time and the unloading position and broadcasting it to the grain transport vehicles to be operated, and controlling the grain transport vehicles to be operated to unload grain and transport based on the path planning results.

This invention relates to a distributed energy collaborative optimization method based on a cloud-edge-device architecture, belonging to the field of smart microgrid technology. Technical solution: S1. Define a four-layer cloud-edge-device architecture; S2. Information transmission stage: Information is reported upwards and circulated and transmitted at the same level; S3. Demand optimization stage: Demand is decomposed downwards and optimized collaboratively at the same level; S4. Energy flow stage: Energy is aggregated upwards and interacts and communicates at the same level. This invention, through its designed four-layer cloud-edge-device architecture, enables distributed energy to shift from centralized control to active participation in demand response. Based on this, a distributed energy collaborative optimization method based on the cloud-edge-device architecture is further designed, achieving full-domain collaborative optimization of distributed energy. Firstly, it reduces the response error of distributed energy; secondly, it effectively reduces the response time of distributed energy, solving the problem of excessive computing power in traditional centralized control; and thirdly, it reduces the operating cost of distributed energy, addressing the high operating cost of distributed energy.

The application relates to integrated chip testing technology and discloses a verification platform of an SOC system, which comprises an FPGA and a peripheral board, wherein the FPGA comprises a logic control module and a plurality of bidirectional ports, and the peripheral board is connected with the SOC system through the FPGA; a data sending end of the SOC system is connected with an input end of the bidirectional port; a bidirectional transmission end of the bidirectional port is connected with a transceiving multiplexing end of the peripheral board through the FPGA; and the bidirectional transmission end of the bidirectional port is also connected with a data receiving end of the SOC system; and an output end of the logic control module is connected with a control end of the bidirectional port. The application also provides a verification platform control method, a control device and a computer readable storage medium of the SOC system. The application solves the problem of insufficient I / O pin numbers of the FPGA when the SOC system is verified based on the FPGA, and guarantees the stability of the test on the SOC system.

The invention discloses a subscription television solution in an OTT mode, and belongs to the technical field of telecommunication networks. The user selects to enter a channel or subscribe by combining the content required by the user and the purpose of the user to enter the target application according to the list state and the content; if the user selects the channel, a complete random mode, a rollback playback mode and a continuous playback mode are selected through the console to display the previous playback or the latest playback of the program set; or selecting whether to enter the subscription or not through the console, if so, entering the subscription, and if not, returning; and if the user enters subscription, displaying a subscription list and selecting subscribed live broadcast to perform live broadcast playing through the broadcast starting logic, the broadcast continuing logic and the broadcast switching logic. The problem that the user watches the live broadcast through the television is solved, the channel for the user to watch the television live broadcast is widened, the watching experience is improved, the limitation is reduced, and the user can automatically or manually select the most wanted live broadcast program according to personal preference.

The invention discloses an aluminate microwave dielectric material with ultralow dielectric loss and a preparation method thereof, the chemical expression of the aluminate microwave dielectric material is YAZn3-xBxAlO7, A = Sr and Ba, B = Co and Ni, and x is more than or equal to 0 and less than or equal to 0.08. The preparation process sequentially comprises the following steps: synthesizing ceramic powder by a solid-phase reaction method, ball-milling, pressing and forming, and sintering to obtain the ceramic. The main crystal phase of the aluminate microwave dielectric material with ultralow dielectric loss is a single-phase '114' configuration compound, and the aluminate microwave dielectric material has the advantages of low raw material cost, low dielectric constant (10-15), high Qf value (102000-255000GHz), simple preparation process, good reproducibility and the like, can solve the time delay problem of microwave signals in high-frequency communication, improves the transmission stability of the microwave signals, and has wide application prospects. The method is very suitable for manufacturing resonators, filters, dielectric substrates, dielectric antennas and other devices.

The invention relates to a dynamic cell switching method and device based on resource allocation, and the method comprises the steps: receiving a cell switching request sent by user equipment, the cell switching request comprising the current geographic position, the target geographic position and the required resource information of the user equipment; determining the moving speed of the user equipment according to the cell switching request, and calculating a target moment when the user equipment reaches the target geographic position based on the moving speed, the current geographic position and the target geographic position; when the target moment is reached, determining at least one candidate cell corresponding to the target geographic position, and screening out a target cell from the at least one candidate cell; allocating communication resources of the target cell to the user equipment based on the required resource information; and switching the user equipment from the source cell to the target cell by using the allocated communication resources. According to the scheme, traditional passive response type switching is converted into prospective resource scheduling, and the problems of long switching time delay and insufficient resource utilization are effectively solved.

The embodiment of the invention discloses a data change log collection method and device under a distributed system, a medium and equipment, and relates to the technical field of data change recording, and the method comprises the steps: in response to a change recording starting instruction initiated by a user, executing an operation conforming to a change recording rule on a working node, and obtaining execution data; before the transaction is submitted, execution data are sent to a target node, and message registration is carried out; wherein the target node is any node in the distributed system; and when the transaction is submitted, in response to a transaction submission notification initiated by the working node and received by the target node, carrying out a change log collection task at the target node. According to the method and the device, the change record task is accepted through any node in the distributed system, so that resources occupied by the main node in the distributed system for maintaining the change record message are liberated, and change log data disk dropping is not required to be completed before the transaction is submitted; the target node only starts to change the recorded task after receiving the transaction submission notification, so that redundant processing caused by transaction rollback is reduced, and the problem of transaction time delay caused by waiting for change log dropping before transaction submission is solved.

This invention provides a multi-channel analog-to-digital signal acquisition system, comprising: a channel selection module for selecting and switching multiple analog signals and digital signals using an analog switch chip, and inputting the selected signal into a multi-channel analog-to-digital converter for sampling; an analog-to-digital conversion module for configuring key parameters of the multi-channel analog-to-digital converter and designing the circuit; a processing and control module for performing data processing and communication tasks using a microcontroller and configuring a real-time operating system for task scheduling; a communication module for real-time data transmission and display with a host computer using a standardized interface and selecting an appropriate communication protocol for communication and testing; and a power management module for configuring a highly integrated power management chip, designing low-power strategies, and performing real-time monitoring and management. This invention significantly improves the quality, efficiency, and accuracy of the acquired data, enhances system performance and compatibility, and promotes the intelligent development of the system.

This application discloses a method, apparatus, device, and storage medium for obstacle avoidance in AGV (Automated Guided Vehicle) transportation, belonging to the field of AGVs. The method includes: acquiring point cloud coordinates, wherein the point cloud coordinates are obtained by scanning the pallet legs with a LiDAR scanner, and the point cloud coordinates are in a coordinate system with the center of the AGV vehicle as the origin; obtaining an estimated pose by matching the pallet pose set based on the point cloud coordinates; and determining the target point cloud coordinates from the point cloud coordinates based on the estimated pose. In this application, after scanning to obtain the point cloud coordinates of the pallet legs, the current pose of the pallet on the AGV vehicle is obtained by matching the point cloud coordinates, and the point cloud coordinates of the pallet legs are determined based on the current pose. The current pose can be quickly obtained from the scanned point cloud coordinates, enhancing real-time performance and avoiding the latency problem that occurs when the point cloud coordinates of the legs need to be distinguished only after training the model. That is, it improves the obstacle avoidance accuracy of the AGV vehicle during transportation.

The present invention provides a traction control system and a rail transit system, wherein the traction control system includes a plurality of control stations, each of which includes at least one motor control unit, at least one converter control unit and a backbone network communication unit; each motor control unit and each converter control unit of each control station are connected to the backbone network communication unit of the same control station, and the backbone network communication units of each control station are connected in communication, wherein the backbone network communication unit includes a packet transmission network device. Each control station communicates by using the packet transmission network device as the backbone network communication unit of the communication device, so that control stations at a long distance can communicate and realize long-distance communication control, which can match the current development of Ethernet technology and the trend of IP-based control equipment, and effectively simplifies the wiring complexity of motor control units and converter control units of different control stations.

A vehicle-mounted towed transient electromagnetic road underground hidden danger detection device comprises a transmitting coil which is laid on a movable towed platform; the receiving coil is laid on a high platform capable of moving relative to the dragging platform, the high platform is arranged above the dragging platform, and the plane where the receiving coil is located is parallel to the plane where the transmitting coil is located; the host is arranged on the trailer platform, one end of the host is connected with the transmitting coil, the other end of the host is connected with a pre-amplifier, and the end, away from the host, of the pre-amplifier is connected with the receiving coil and used for receiving electromagnetic signals transmitted by the receiving coil. The pitch of turns of the receiving coil is increased, the parasitic capacitance can be reduced, the frequency band is widened, the sensitivity of the receiving system is improved through the pre-amplifier, and the data quality of the urban towed transient electromagnetic device is improved.