80 results about "Master/slave" patented technology

Role switch between wirelessly paired master / slave devices may be performed without perceived glitches in audio. The devices negotiate an anchor point, such as a point in time or a point in relation to other events, for performing the role switch. To prepare for the role switch prior to the anchor point, the devices communicate a variety of information, such as information for communicating with the host device after the role switch and information for bit processing after the role switch. The slave device may use such information to serve in the master role, without the host knowing that a role switch occurred.

The invention relates to a multi-terminal offline media synchronous playing method and system in a local area network. The multi-terminal offline media synchronous playing method in the local area network comprises the following steps: performing master-slave election on all terminals, and confirming a master device and a plurality of slave devices; performing clock synchronization on the master device and all the slave devices; packaging the synchronized playing progress of the master device to form a master device broadcast data packet, and sending the master device broadcast data packet to all slave devices; after the slave device analyzes the time delay and play delay, time delay and play delay are calculated respectively, and network time delay and progress errors are obtained; whether the absolute value progress error of the current slave device exceeds an error threshold value or not is judged; if not, the master device continues to broadcast the data packet; and if yes, pre-estimated target frame correction is carried out on the slave device, and playing progress synchronization of the slave device is completed. According to the multi-terminal off-line media synchronous playing method in the local area network, the dependence of the server is effectively reduced, and the playing progress synchronization precision is remarkably improved.

The application discloses a distributed storage index method and system based on multiple hash, and the method is as follows: based on a key-value storage engine, a Master / Slave architecture is adopted to build a distributed storage index system; the Master / Slave architecture comprises one Master node and multiple Slave nodes; according to an access request of a key-value pair, the Master node calls multiple linear hash functions to calculate the key of the key-value pair, and obtains the Slave nodes corresponding to all hash values; the Master node sends corresponding operation requests to the corresponding Slave nodes, including an increase operation, a deletion operation, a modification operation and a search operation; when the Master node detects that the real-time load rate of a certain Slave node exceeds a load critical point triggering node splitting, a node splitting operation is performed. The method utilizes the automatic expansion feature of linear hash, improves the scalability and resource utilization rate; based on multiple hash functions, multiple data backups are realized, data loss is avoided, and the reliability is improved; access and storage are realized by using nodes with low load rates, and load balancing is realized.

The utility model relates to the technical field of battery thermal management systems, in particular to a battery thermal management system of a double-unit electric wide-body vehicle. Comprising a master thermal management unit and a slave thermal management unit which are identical, a host controller of the master thermal management unit is in communication connection with the whole machine, a slave controller of the slave thermal management unit is in communication with the whole machine through the host controller, a master / slave definition module of the slave controller is communicated with a grounding signal, and the master / slave definition module of the host controller is suspended; the master heat management unit and the slave heat management unit are communicated with the waterway assembly, and the other end of the waterway assembly is communicated with a waterway channel in the power battery pack. The problem of automatic networking of heat management units of the same model is solved, the working states of the master and slave machines are distinguished by setting grounding signals through the slave machines, the installation is convenient, and a background control system is simplified.

The present invention relates to the technical field of software update, and in particular to a software update method for master-slave devices of a low-voltage stacked energy storage system. The specific process is as follows: S1, inserting a segment of data X at the beginning of a firmware file of a master device or each slave device; S2, a superordinate computer being connected to the master device and inputting an update command "update"; S3, the master device storing firmware data in a specific area of an external FLASH chip; S4, the firmware storage area in the external FLASH chip of the master device comprising the data X and the firmware data; S5, determining whether there is an identifier of the master / slave device in the content of the first x bytes; S6, completing the update; S7, receiving all the content from the superordinate computer; S8, when the master device wakes up all the slave devices and completes power-on, all the slave devices completing the update; S9, when the master device detects that the identifier is not the identifier of the master device or the identifier of the slave device, exiting the update. Compared with the prior art, the present invention can avoid the cumbersome operation of repeatedly connecting communication harnesses, and also avoid device crash caused by the input update command not corresponding to the sent firmware.

The invention relates to the technical field of industrial robot polishing and grinding machining, in particular to a double-robot collaborative polishing and grinding machining system and method, and solves the technical problems that according to an existing method, double-face collaborative control is difficult to achieve, and machining of any face can directly affect machining deformation of the other face. The device comprises a base, a rotary table, a driving mechanism and a master / slave six-degree-of-freedom industrial robot, the driving mechanism is used for driving the rotary table to rotate around a Z axis, the rotary table is fixedly connected with a clamp used for clamping a blade to be polished and ground, the master / slave six-degree-of-freedom industrial robot is connected with a master / slave polishing and grinding assembly, and the master / slave polishing and grinding assembly is connected with a master / slave flap wheel used for double-sided collaborative polishing and grinding of the blade. According to the double-robot collaborative polishing and grinding machining method, online programming track planning of the robots is achieved through the polar coordinate system, the track planning difficulty is lowered, the motion tracks of the robots are simplified, the motion precision and the feedback speed of the robots are effectively improved, and the control precision of double-robot collaborative polishing and grinding machining is improved.

A method for determining a master-slave node is provided. The method includes: determining a first target node, a second target node, a third target node and a fourth target node from the plurality of storage nodes, where the first target node includes first check data including a first first character and a first last character; generating heartbeat signals and master-disable signals for the target nodes; determining the first target node as a master node when the first first character and the first last character are the same and the first first character and the first last character are the same as a preset value, it is determined that the second target node, the third target node and the fourth target node are not master nodes, the first target node is not a slave node, the first master-disable signal is invalid, and the first heartbeat signal is in a normal state.

This application provides a fault detection and handling method for RapidIO switching networks, belonging to the field of embedded computer technology. Specifically, it includes several RapidIO service nodes, a dual-redundant RapidIO system management node, and a RapidIO switch. The RapidIO system management node connects to the RapidIO switch and the RapidIO service nodes through an independent RapidIO system management bus interface. The two RapidIO system management nodes employ a master / slave switching strategy to determine the master node. Master and slave determination is performed upon power-up, and master / slave checks are periodically performed during operation. After determining the RapidIO system management master node, it performs the detection and handling of RapidIO switching network faults. This application's solution effectively prevents the spread and deterioration of RapidIO switching network faults.

The invention provides a method, device and equipment for intelligently detecting gateway memory leak and a medium, and the method comprises the steps: deploying a lightweight AI prediction model at a main gateway, and carrying out the online learning of a memory leak mode and real-time reasoning; the slave gateway collects memory data, preprocesses the memory data, generates a memory change trend vector by adopting a dynamic sliding window, and transmits the memory change trend vector to the master gateway; the main gateway analyzes the memory change trend vector transmitted by the slave device in real time through an AI prediction model, identifies a potential leakage mode of the memory change trend vector, and performs graded early warning on an identification result; constructing a lightweight graph neural network to analyze a memory dependency relationship, evaluating a repair measure influence range, and dynamically selecting an optimal repair strategy for equipment needing to be repaired according to a historical repair effect in combination with a reinforcement learning model; and regularly carrying out data statistics and generating a whole-network visual predictive report. According to the invention, memory leak detection, classified statistics and intelligent alarm of the master / slave gateway can be realized, and the network stability is improved.

In a field bus system, the sub-users (3) each have a sub-connection (33) and a functional connection (34) connected to the sub-connection (33), wherein in each sub-user status information is acquired which indicates whether the functional connection is active or inactive. A telegram output by a master user in the field bus system has at least one data report, wherein the status information of the sub-users (3) addressed in the data report is acquired together with the telegram. Furthermore, a counter field of the data report is changed by the sub-connections (33) of the sub-users (3) which have processed the useful data field in a manner predefined for the data transmission operation performed in each case. The data report is assigned an expected value of the counter field which arises when the useful data field has been processed by the sub-users (3) addressed in accordance with the data transmission operation predetermined in the command field. The master user (2) then determines the expected value of the counter field of the data report on the basis of the status information acquired with the telegram and compares it with the value of the counter field in the data report processed by the sub-users (3) addressed in order to determine a processing error in the data report processed by the sub-users (3) addressed in the event of a deviation.

The invention discloses a highway video cloud monitoring system based on cloud side-end collaboration, which relates to the technical field of highway monitoring, adopts a hierarchical collaboration architecture consisting of a front-end acquisition layer, an edge computing layer and a cloud management layer to form a closed-loop logic link, and consists of an edge node cluster containing a master / slave node structure. Performing preprocessing, intelligent analysis and data screening on the data stream, identifying four types of traffic events and generating event metadata, and supporting cross-node data sharing and continuous event complete data chain construction; the cloud management layer comprises a calculation node, a storage node and a scheduling node, cross-node data association is achieved through data fusion, a traffic behavior model is constructed through deep modeling, decision support information is output, and edge node resource allocation, task distribution and storage strategy management and control are achieved. The data transmission pressure and the storage cost are greatly reduced, the monitoring real-time performance and the data processing accuracy are improved, and the reliability and the expansibility of the system are enhanced.

The invention discloses a half-duplex two-way communication control method and device based on application layer scheduling and a medium, and relates to the technical field of communication, and the method is suitable for a master-slave device system connected through an RS485 and other half-duplex serial communication interfaces, and is especially suitable for a hydrological element measurement probe automatic putting system. According to the invention, by defining a master / slave information role, establishing a priority message queue, setting a master information period sending mechanism and adopting a'following 'sending strategy, a slave end instruction is immediately sent only after receiving a master end effective frame, so that channel conflicts are avoided, and meanwhile, a heartbeat mechanism and an instruction confirmation retransmission mechanism are introduced, so that the transmission efficiency is improved. And the communication stability and integrity are ensured. According to the invention, the hardware structure does not need to be changed, and the reliability and real-time performance of two-way communication of the half-duplex system can be remarkably improved only through software control.

The invention belongs to the technical field of avionics, and provides a full-aircraft comprehensive alarm method and system in a main-standby mode, and the method comprises the steps: collecting the current state parameters of all systems on an aircraft in real time, and generating current alarm information; according to the current alarm information, judging whether the current alarm information is a new alarm or continuously generating an alarm through alarm processing logic, and sending the current alarm information which is judged to be the new alarm or continuously generating the alarm to a local alarm information base to update the local alarm information base; packaging all alarm information generating alarms in the updated information base, and sending the packaged alarm information to a first alarm device through a main / backup bus; and sorting the alarm information in the updated information base according to a preset logic sequence, packaging according to a sorting result, and sending the packaged alarm information to the second alarm device through the main / backup bus. According to the method, real-time alarm processing can be carried out on the airplane and is fed back to each alarm device, and meanwhile, the safety redundancy of the airplane is improved by adopting the main bus and the standby bus.

A building management system (BMS) includes building equipment operable to affect a physical state or condition of a building and a gateway device configured to couple to the building equipment via a wireless master slave / token passing (MS / TP) bus or a wired MS / TP bus. The gateway device is configured to communicate building data to a cloud-based platform including a hub configured to receive the building data, a plurality of cloud applications, wherein the plurality of cloud applications are configured to receive the building data from the hub and process the building data to provide a building data output. The cloud-based platform is configured to communicate the building data output to and receive a command based on the building data output from at least one of a control application, an analytic application, or a monitoring application. The gateway device is further configured to operate according to the command.

A local control unit operable as a master or slave device comprises: a memory, the memory indicating whether a converter subunit is enabled or disabled; and an enable; a wake-up output; a communication link input interface and a communication link output interface, the communication link input interface and the communication link output interface configured to receive and send master / slave information; and a further communication link input interface and a further communication link output interface, the further communication link input interface and the further communication link output interface configured to enable current balancing and phase staggering with other enabled converter subunits; in response to a respective local output current being above a first threshold value, sending a wake-up request to a next converter subunit; and in response to the local control unit being a slave subunit; the respective local output current being below a second threshold value, and receiving master / slave information indicating that the next enabled subunit is a master subunit, disabling itself.

The present invention provides a multifunctional server based on task adaptive matching and its application method, which distributes and executes the task package issued by the upper computer through the chassis management unit, activates the master server unit / slave server unit of the corresponding task attribute according to the task attribute of the application task, and executes the assigned application task. Therefore, it is possible to process high-capacity, multi-task task packages, distribute each task to the corresponding master / slave CPU for execution, reduce the single computing pressure of the traditional CPU, share the pressure, improve the server's processing performance for tasks, and improve the computing speed. The high-speed processing unit provides graphics / big data computing services for each CPU, reduces the big data and AI computing pressure on each CPU, transfers the intelligent computing of graphics / big data to the high-speed processing unit, further optimizes and expands the processing efficiency and performance of the server CPU, meets the growing business needs, and provides users with a better user experience.

The present application discloses a teleoperated system, which includes a display, a main input device and a control system. The control system is configured to determine the orientation of an end effector reference system relative to a field of view reference system, determine the orientation of a main input device reference system relative to a display reference system, establish an alignment relationship between the main input device reference system and the display reference system, and based on the alignment relationship, command a change in the posture of the end effector in response to a change in the posture of the main input device. The alignment relationship is independent of the positional relationship between the main input device reference system and the display reference system. In one aspect, the teleoperated system is a telemedicine system, such as a telesurgery system.

The invention provides a communication method for an on-chip external interface, and relates to the technical field of data transmission, and the method comprises the steps: detecting whether an external bus is idle or not after receiving an external access request of a CPU or other main equipment; the method comprises the following steps: when detecting that an external bus is in an idle state, generating a bus request signal; when it is detected that no effective chip selection signal exists on the external bus in the set clock, an effective chip selection signal is generated, and the right to use the external bus is obtained to serve as a host for external access; and bus communication is carried out according to the configured single-line control mode or double-line control mode, and after data transmission is completed, the right to use the external bus is abandoned, so that the slave is accessed by the external host. Therefore, the chip has a master / slave mode switching function, the chip can be used as a host for external access or the chip can be used as a slave for access by an external host, and different communication scenes can be flexibly coped with.

The invention discloses a method and a system for judging a main distributing twitching fault of an FC (Fiber Channel) main distributing valve, which are used for monitoring the state of a valve core of the main distributing valve, collecting signals through a displacement sensor, analyzing the law of the collected signals, fitting and matching with twitching characteristics, and identifying and judging according to set parameters. And finally, the main and distribution valve element twitching fault is accurately and timely judged. And support is provided for fault switching and redundancy of the water turbine governor system. According to the method for judging the master-slave twitch fault, the master-slave twitch fault can be automatically and rapidly diagnosed, redundancy switching of the master / slave controller is carried out, stability of a control system can be rapidly recovered, accident expansion is prevented, safe and stable operation of a unit is guaranteed, and the method has important significance.

A bridge device for a building network includes a radio, a wired communications interface configured to communicate with a first master slave / token passing (MS / TP) network, and a processing circuit configured to wirelessly transmit and receive messages to and from MS / TP devices coupled to the MS / TP network. The processing circuit is configured to transparently communicate the messages such that the MS / TP devices on the first MS / TP network are operationally unaware of a wireless network associated with the bridge device by passing tokens for MS / TP devices outside of the MS / TP network.

A stackable switch unit and a method for using a stackable switch unit, comprising: the stackable switch unit has a plurality of signal ports, and the plurality of signal ports include a master / slave control port; and during a power-on startup program of the stackable switch unit, automatically determine whether the stackable switch unit is a master switch unit or a slave switch unit according to the signal level of the master / slave control port and / or the content of the data obtained from the master / slave control port.

A synchronization optimization method for EtherCAT master slaves is provided. By capturing a time when a master sends a data frame, a time when receives, and a time when a reference slave receives the data frame, a transmission delay is calculated. A compensated transmission delay is obtained. A time taken for a data frame to leave a parent port and return to the same parent port, a transmission delay, a clock offset, and a clock drift are calculated. The clock drift is compensated. A new clock offset is obtained by subtracting the compensated clock drift from the clock offset and written into the non-reference slave for compensation to complete a synchronization optimization. The present application reduces the clock drift and enables the master to compensate for the clock drift of each slave more rapidly.

A surgical robotic system includes a surgical console and a training simulation console operably coupled to the surgical console. The surgical console includes a display and a user input device configured to generate a user input. The training simulation console includes a memory, a simulator, a master slave controller, and a simulation controller operably coupled to the simulator and the master slave controller. The memory is configured to store session data and instrument information. The simulator is configured to initialize a session. The master slave controller is configured to receive input positions from the user input device and to determine desired drive commands for the robotic arm or instrument drive unit. The simulation controller is configured to simulate in the session, operating of at least one of the robotic arm or the instrument drive unit.

The invention discloses a multi-factor-based collaborative strategy making and efficiency pre-evaluation method and system. The method comprises the following steps: analyzing a collaborative tracking task demand and a node working state; screening an effective node combination based on a detection capability matching criterion, and optimizing node selection through a constraint condition; a tracking strategy is formulated by combining target motion parameters, and master / slave node roles are distributed; constructing an efficiency estimation model by using multiple factors, and dynamically correcting an evaluation result through actual feedback data to form a closed-loop optimization mechanism; the system comprises a data receiving module, a task analysis module, a node selection module, a strategy making and issuing module and an efficiency estimation and evaluation module, and full-process automation from task analysis to dynamic adjustment is achieved. Through multi-factor weighted evaluation and feedback correction, the robustness of a collaborative strategy is improved, the resource utilization rate and the tracking precision are optimized, and the method is suitable for a multi-node collaborative detection task in a complex scene.

The invention relates to the technical field of explosive control, and particularly discloses a relay type isolation RS-485 cascade networking concentrator for an exploder, which comprises a lithium battery power supply management module, a master node isolation RS-485 module, a multi-path slave node isolation RS-485 module and a pure hardware automatic transmit-receive direction control module. A single-branch fault does not influence the whole; the device is simple in structure, convenient to use, capable of being powered by a lithium battery and USB-C, convenient to deploy, capable of being directly connected between any master port and any slave port in series, capable of achieving random expansion of communication distance, supporting star-shaped / tree-shaped multi-stage relay networking and meeting the large-scale, safe and long-distance synchronous detonation requirements of thousands to tens of thousands of electronic detonators. The hidden danger of false triggering caused by software deadlock, time sequence drift or electromagnetic interference in a traditional scheme is avoided. And in a civil explosive electronic detonator initiation scene, the risk of error explosion caused by direction control errors is greatly reduced.

The utility model relates to the technical field of power amplifier equipment switching, and discloses a power amplifier main and standby equipment switching circuit which comprises a first change-over switch module and a second change-over switch module. According to the application, the first change-over switch module and the second change-over switch module receive the same control signal to realize the switching between the main and standby devices, and the types of electronic components are single, so that the problems of production efficiency, finished product management and comprehensive cost caused by the optimization of the power amplifier main and standby device switching circuit structure are finally solved.

To make a slave operation form more appropriate in a master-slave system.SOLUTION: A master-slave system 1 comprises a master device 10, a slave device 20, and a control device 30. The control device 30 comprises an operation control unit 353 and a tactile force transmission unit 354. The tactile force transmission unit 354 executes transmission control of tactile force between the master device 10 and the slave device 20 on the basis of an operation input to the master device 10 and an external force input to an instrument (a catheter) that operates in response to the operation. The operation control unit 353 causes the slave device 20 to execute an operation set for the instrument being operated in accordance with the operation input to the master device 10.SELECTED DRAWING: Figure 1

The utility model provides a torque monitoring system, which comprises a drum-shaped hexagonal coupling, an elastic body, a secondary coil, a primary coil, a strain acquisition and signal transmission circuit, a wireless power supply receiving plate and a strain gauge, a secondary coil, a primary coil, a strain acquisition and signal transmission circuit and a wireless power supply receiving plate are arranged on the elastic body, the strain gauge is arranged on the drum-shaped hexagonal coupling and is connected with the strain acquisition and signal transmission circuit, and the wireless power supply receiving plate is connected with the secondary coil. According to the torque monitoring system, the drum-shaped hexagonal coupler serves as a torque monitoring part, the higher eccentric compatibility of the driving shaft and the driven shaft and the higher axial movement adaptability are achieved, and the remote and multi-node torque monitoring function can be achieved in cooperation with the wireless strain measuring mechanism.

This invention provides a thermal management chip, system, and management method for a host with a built-in interface, including: a controllable current source sequence, temperature sensing device category control, an ADC module, a register group, interface, and control logic module, an NVM non-volatile memory, a clock generation module, and a local temperature sensing transistor. The thermal management chip also includes an Aip port, an Ain port, a PWM port, a TACH port, a master / slave mode selection port, an SDA port, an SCL port, and a status indicator port. This invention collects local temperature, remote temperature, and fan speed information from the thermal management chip, and flexibly controls the fan speed using a lookup table to reduce system energy consumption and extend fan life.