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110 results about "Parallel communication" patented technology

In data transmission, parallel communication is a method of conveying multiple binary digits (bits) simultaneously. It contrasts with serial communication, which conveys only a single bit at a time; this distinction is one way of characterizing a communications link.

Distributed training scheduling and communication optimization method and system of multi-modal large model on domestic computing power platform

The invention discloses a distributed training scheduling and communication optimization method and system of a multi-modal large model on a domestic computing power platform. The method comprises the following steps: virtualizing a heterogeneous computing unit of a preset platform into a virtual device pool, and fusing first-order gradient of a multi-modal sample and Hessian matrix information based on quantitative perception training to generate a sample sensitivity grading atlas; virtual device pool attributes and the sensitivity grading atlas are used as input, an optimal hybrid parallel configuration scheme is automatically generated through a configuration search algorithm, and a parallel combination mode, resource mapping and a high-sensitivity sample scheduling strategy are defined; a distributed training code of an integrated communication optimization strategy is automatically generated according to a configuration scheme, pipeline parallel communication and data parallel gradient synchronization constraint are executed in a topology adjacent equipment subset, and a hierarchical aggregation mechanism is adopted; and dynamically screening a core training set and scheduling a calculation task to complete distributed training. According to the method, efficient cooperative training of the multi-modal large model on the domestic computing power platform is realized.
Owner:GUANGXI POWER GRID CORP

Data transmission method and computer equipment

The invention discloses a data transmission method and computer equipment, and relates to the technical field of data transmission. The method comprises the following steps: acquiring a sending work request containing a local sending queue pair number and a work queue element; querying target sending information by taking a local sending queue number as an index; storing the working queue elements and the target sending information as operation contexts into an internal memory of a network card of a request end, and recording corresponding indexes; assembling a target data packet based on the target sending information and the memory index; receiving a feedback data packet of the target data packet and extracting a memory index and a serial number carried by the feedback data packet; if the feedback data packet is a correct confirmation data packet, judging that the sending of the work request is completed and releasing the context; and if the feedback data packet is a confirmation failure data packet, calculating a retransmission data initial address and organizing retransmission. The technical problem that the effective connection number of network cards is limited by hardware resources in the prior art is solved, and the technical effect of supporting large-scale network parallel communication is achieved.
Owner:INSPUR SUZHOU INTELLIGENT TECH CO LTD

Interphone flat-emergency dual-purpose dual-mode parallel communication method

The invention relates to the related field of a peacetime and urgency dual-purpose communication technology, in particular to an interphone peacetime and urgency dual-purpose dual-mode parallel communication method. According to the invention, dual-mode parallel communication is carried out through a private network emergency channel and short message communication of a Beidou satellite communication system, the two modes operate independently and do not interfere with each other, when one communication mode is limited, the other communication mode can continue to work, parallel transmission of voice and data is realized, the problem that single communication fails in a complex environment is effectively solved, and the communication efficiency is improved. The continuity and reliability of communication in an emergency scene are ensured, key information is ensured not to be lost, and the development of emergency rescue work is facilitated.
Owner:FUJIAN BEIFENG COMM TECH CO LTD

Dual-master-control dynamic cooperation hybrid power system and control method

The invention discloses a double-master-control dynamic cooperation hybrid power system and a control method. The system comprises a double-master-control dynamic cooperation framework, a master control unit A and a master control unit B synchronize data through a communication bus and dynamically distribute tasks according to a load rate; the hybrid energy storage expansion unit is formed by connecting a lithium iron phosphate battery pack and a capacitor bank in parallel through a bidirectional DC / DC converter; a dual-channel redundancy communication mechanism is adopted, a CAN bus is adopted for parallel communication with the Ethernet, automatic switching is achieved in the case of faults, and no data is lost; the predictive fault switching module is used for predicting a fault risk based on the LSTM neural network and starting standby main control unit preloading; and a machine learns a load optimization engine, deploys a reinforcement learning algorithm to dynamically adjust an output ratio and performs online optimization. The method comprises the steps of system initialization, master control task allocation and the like. The task processing efficiency and flexibility of the system are improved, reliable and stable communication is guaranteed, the fault risk is reduced, and the adaptability to load change and the energy utilization efficiency are improved.
Owner:HANGZHOU LIAO TECH

Seamless migration method, system and device for edge session and storage medium

The invention provides an edge session seamless migration method, system and device and a storage medium, which are suitable for real-time session scenes such as remote desktops, screen streaming media, interaction control and the like. The method comprises the following steps: generating a migration token based on trigger conditions such as load, link quality and proximity, executing snapshot and incremental log copying of a session state, establishing a parallel communication channel in a target relay, and completing NAT penetration and quality detection; calculating a sequence number and time offset between a source relay and a target relay, constructing a repetition suppression and ACK mapping mechanism, realizing mirror image drainage in a parallel window, and completing main path switching after a QoE condition is satisfied; and rollback control and key context synchronization are supported, and the stability and security of the migration process are ensured. The scheme has the advantages of low time delay, no interruption, high reliability and the like, and is suitable for various edge deployment and complex network environments.
Owner:KONGKONG (SUQIAN) INFORMATION TECHNOLOGY CO LTD

Large model reasoning expert parallel communication optimization method and device and electronic equipment

The invention provides a large model reasoning expert parallel communication optimization method and device and electronic equipment, and relates to the technical field of communication. The method comprises the following steps: receiving a full-to-full transmission task; according to the all-to-all transmission task, adding to-be-transmitted traffic to an unfinished transmission traffic queue, executing a traffic scheduling mechanism on the unfinished transmission traffic queue, and determining traffic data volume sent to each network card; determining the pre-distribution credit of the receiving end for each movable connection, and sending the pre-distribution credit of each movable connection to the sending end, so that each network card transmits the traffic data volume according to the corresponding pre-distribution credit; the pre-distribution credit is determined by the receiving end by dynamically adjusting credit distribution based on historical credit use information of each sending end. According to the method and the device, the all-to-all communication efficiency can be improved by uniformly managing and scheduling the intra-machine flow and the network card resources and dynamically adjusting and distributing the credit, so that the reasoning performance of the hybrid expert model is remarkably improved.
Owner:CHINA TELECOM CORP LTD TECHNOLOGY INNOVATION CENTER +1

Power data hybrid encryption transmission method, system and device and readable storage medium

The invention relates to a power data hybrid encryption transmission method, system and device, and a readable storage medium. The method comprises the following steps: S1, encrypting a power data plaintext by using a session key to obtain a ciphertext; s2, cutting the ciphertext into a plurality of sections of sub-ciphertexts, combining the sub-ciphertexts with unique random numbers to obtain a plurality of combinations of the sub-ciphertexts and the random numbers, and combining the random numbers to obtain a random number group; randomly sorting the plurality of sub-ciphertexts and random number combinations to obtain a random ciphertext array; s3, encrypting the session key and the random array, and performing digital signature on the random ciphertext array; s4, transmitting the encrypted random array, the session key, the random ciphertext array and the digital signature to a receiver in a parallel communication mode; s5, the receiver verifies and decrypts for many times to obtain the electric power data, the problem that data safety and data transmission efficiency cannot be considered in the existing electric power transmission process is solved, the data transmission safety is improved, and it is ensured that the transmission speed cannot be greatly reduced.
Owner:YUNNAN POWER GRID CO LTD

Dual CAN channel fusion J1939 protocol stack of vehicle-mounted terminal and parallel communication diagnosis method

The invention provides a dual-CAN channel fusion J1939 protocol stack of a vehicle-mounted terminal and a parallel communication diagnosis method, and aims to solve the problems that an existing dual-CAN channel terminal lacks a protocol layer parallel processing mechanism and an intelligent routing strategy, communication and diagnosis conflicts still exist, and a J1939 protocol is insufficient in adaptation and poor in baud rate adaptation flexibility. The method comprises the following steps: S1, constructing a dual-CAN FD channel and dynamic baud rate adaptive detection mechanism, and providing a link basis for service isolation; s2, integrating J1939 and UDSonCAN dual protocol stacks based on dual CAN FD channels, and establishing data mapping to realize data collaboration between protocols; s3, designing an intelligent message routing and channel flow monitoring mechanism, and ensuring conflict-free parallel transmission of communication and diagnosis services; and S4, newly adding J1939 network management, configuration parameter persistence and firmware online upgrading functions, and improving the maintainability of the terminal. According to the invention, the advantages of dual-CAN channel hardware are fully exerted, efficient cooperation of communication and diagnosis and protocol deep compatibility are realized, and the compatibility, flexibility and stability of the terminal are greatly improved.
Owner:CHUANGLING ZHONGXIANG INTELLIGENT TECHNOLOGY (ZHEJIANG) CO LTD

Multi-device communication method based on I2C bus, chip and electronic device

The invention relates to the technical field of digital communication, and discloses a multi-device communication method based on an I2C bus, the method is applied to a master control device, and the method comprises the following steps: allocating a device ID to each slave device, and determining that each slave device has allocated the device ID; in the communication stage, a composite data packet containing N data fields is sent, so that after the slave device receives the composite data packet, the data field of the target position is indexed based on the allocated device ID, and the content of the data field of the target position is analyzed to obtain target information; or receiving a composite data packet containing N data fields; each data field content in the received composite data packet is response data written into a target position by each slave device based on the allocated device ID; wherein the device ID and the position of the data field have a mapping relation. According to the method, parallel communication of multiple devices can be supported without hardware pin modification, the communication time is shortened, and the bus utilization rate is improved. The invention also discloses a chip and electronic equipment.
Owner:BEIJING TSINGTENG MICROSYSTEM CO LTD

Signaling for link aggregation setup and reconfiguration

Methods, systems, and devices for wireless communication are described. A wireless device may identify an aggregation capability to communicate in parallel over a plurality of wireless links. The wireless device may in some cases broadcast this aggregation capability (e.g., periodically). Additionally or alternatively, the wireless device may transmit the aggregation capability in response to a request received from another wireless device. In some cases, the first wireless device may transmit a request to a second wireless device inquiring about aggregation capabilities of the second wireless device. The second wireless device may respond with its aggregation capabilities (e.g., or may broadcast its aggregation capabilities independently of receiving the response). The wireless devices may establish a multi-link session based at least in part on the indicated aggregation capabilities.
Owner:QUALCOMM INC

IEC104 multi-channel parallel acquisition method and system, terminal and medium

The invention relates to the field of data acquisition, and particularly provides an IEC104 multi-channel parallel acquisition method and system, a terminal and a medium, and the method comprises the steps: configuring parameters of at least two acquisition channels communicating with a remote terminal, and setting a global information object address set to be acquired; initializing an acquisition channel to form a plurality of parallel communication links which are mutually independent physically and logically; dividing the global information object address set into a plurality of information object address subsets corresponding to the number of the acquisition channels based on the real-time load state of each acquisition channel, distributing each subset to the corresponding acquisition channel, and collecting data from the distributed information object address subsets in parallel by each acquisition channel; and receiving and broadcasting a data updating message generated after the data is acquired by each acquisition channel through a preset state synchronous bus. Through multi-channel parallel acquisition and intelligent load balancing, the throughput of the system is improved, and a single-point fault is eliminated.
Owner:INSPUR ARTIFICIAL INTELLIGENCE RES INST CO LTD SHANDONG CHINA

Cable-free communication system based on photon integrated phased array

The invention discloses a no-cable communication system based on a photon integrated phased array, and the system comprises a plurality of symmetrical double-end receiving and transmitting communication systems, a modulation and demodulation module in a local end emits a modulation optical signal, and the modulation optical signal passes through a light transmitting antenna of the local end for multi-beam transmission; the optical receiving antenna at the opposite end receives an optical signal transmitted by the local end; the corresponding optical fiber beam splitter performs energy splitting on the received optical signal, one part of light is used for bidirectional closed-loop tracking control, and the rest of light enters the corresponding modulation and demodulation module; the modulation-demodulation module at the opposite end emits a modulated optical signal, and the modulated optical signal passes through the optical emission antenna at the opposite end to perform multi-beam emission; and the optical receiving antenna of the home terminal receives the optical signal transmitted by the opposite terminal so as to establish a bidirectional full-duplex communication link. According to the invention, rapid and agile beam control and simultaneous multi-beam transceiving are realized, and the application requirements of near-field cableless multi-link parallel communication are met.
Owner:SHANGHAI RADIO EQUIP RES INST

Parallel communication system for chips

The application relates to a chip parallel communication system. The system comprises a plurality of nodes, each node comprising a GMAC unit, and a processor unit, an MC unit and a NIC unit connected to the GMAC unit; the GMAC unit is configured to, in response to receiving an access request, transmit a first remote memory access request to the NIC unit and a second remote memory access request to the MC unit; the NIC unit is configured to transmit the first remote memory access request to a corresponding external node; the MC unit is configured to read or write data from a memory coupled to the MC unit according to at least one of a local memory access request and the second remote memory access request, and in the case of reading out data, transmit the read-out data to a corresponding processor unit through the GMAC unit; by configuring the GMAC unit and the processor unit, the MC unit and the NIC unit connected to the GMAC unit, the application reduces the communication delay between the nodes, thereby improving the data volume communication parallel computing performance, and improving the system performance and efficiency.
Owner:SOUTHERN POWER GRID DIGITAL GRID RESEARCH INSTITUTE CO LTD

Mobile device enclosure with integrated wireless-to-serial bridge

PCT designated stageWO2026178454A1Data connectionComputer printing
A mount apparatus and mobile applications use a Bluetooth-to-Serial bridge integrated within the device enclosure's mounting area. The bridge can be powered by the mount, remaining separate from the mobile device's charging / data connection. Via the tablet operating system, the Bluetooth link connects directly to applications on the device, streamlining communication among those applications, the mount, and any serial devices upstream. Using this separate channel for specialized hardware avoids competition for the physical port, preserving it for peripherals like card readers, receipt printers, and keyboards. Wired networking through an ethernet adapter, including receiving power over ethernet (PoE), is desirable where preferred. Additionally, the dedicated parallel communication channel established by the Bluetooth‑to‑Serial bridge, directly accessible by paired applications on the mobile device, can be extended to other specialized hardware with which the application may need to communicate, enabling flexible integration, reduced cabling contention, and improved system reliability across diverse deployment scenarios.
Owner:GCX CORP

Concurrent channels of communication

The present disclosure provides systems, methods, and machine-readable media for concurrent communication. One method includes displaying an interactive application on a first device of a user during a break in an entertainment segment displayed on a second device, sending a request for interaction from the user through the interactive application, pausing the interactive application when the break in the entertainment segment is over, and notifying the user when an additional break begins so the user can commence interacting with the interactive application.
Owner:UNITED SERVICES AUTOMOBILE ASSOCIATION (USAA)

Communication network for motor vehicle, motor vehicle and method for transmitting data in communication network

The invention relates to a communication network (10) for a motor vehicle (14), comprising at least two parallel communication paths (24, 26), in particular a main path and a backup path, which are designed to provide redundant data transmission in the communication network (10), the communication network (10) having a communication layer (16) and an encryption layer (20), the communication layer has at least one communication processor (18) for organizing data transmission, and the encryption layer has at least one encryption processor (22) for cryptographically protecting data to be transmitted. The at least one encryption processor (22) is designed to cryptographically protect data to be transmitted along the parallel communication paths (24, 26) by applying at least two different encryption algorithms from one another.
Owner:AUDI AG

Embedded single-network-port multi-IP communication device

The invention discloses an embedded single-network-port multi-IP communication device, and a dynamic configuration method, a data transmission method and a fault recovery method of the communication device. The communication device comprises an embedded microprocessing system, a storage system, a man-machine interaction interface, a network input and output interface and a double-logic network interface virtualized in core control software, and the network input and output interface is a single physical Ethernet interface. And the dual-logic network interface comprises a fixed interface and a dynamic interface which share the same physical network port. The method provided by the invention adopts the communication device. Parallel communication of double logic IP addresses is realized through the single physical network port, the hardware cost and the integration level are optimized, the flexibility and the real-time performance of network configuration are improved, the reliability and the maintainability of the system are enhanced, and the resource utilization rate is improved.
Owner:CSSC MARINE TECH CO LTD

Expert parallel communication method and device, electronic equipment and storage medium

The invention provides an expert parallel communication method and device, electronic equipment and a storage medium, and belongs to the technical field of network communication, and the method comprises the steps: obtaining training parameters of a hybrid expert model and physical topology information of a training cluster of the hybrid expert model; determining a first communication data volume and a second communication data volume according to the physical topology information in combination with different parameters in the training parameters; under the condition that a preset condition is met, pulling the selected expert network in other server nodes to a local server node; the preset condition comprises that the first communication data volume is lower than the second communication data volume; full-exchange communication in local server nodes is carried out; and full-protocol communication of the training cluster is carried out in a time period between two adjacent full-exchange communication, and in-network aggregation acceleration is carried out in the process of the full-protocol communication. According to the invention, the communication data volume of expert parallel communication can be reduced, and the communication delay of expert parallel communication is reduced.
Owner:CHINA MOBILE COMM LTD RES INST +1

Training method and system, parameter updating method, electronic device and storage medium

PendingCN122334383AAlgorithmTerm memory
Embodiments of this disclosure provide a training method and system, a parameter update method, an electronic device, and a storage medium. The training method includes: for a first set of model layers, performing the following operations in parallel during a first time slice: performing backpropagation of the m-th model layer via a first computing device to obtain the gradient of the m-th model layer; transferring the gradient of the (m+1)-th model layer from the first computing device to a first host via a first direct memory access engine; performing a micro-batch gradient accumulation operation of the (m+2)-th model layer via the first host to obtain the cumulative gradient of the (m+2)-th model layer; and performing a first data parallel communication operation and an optimizer update operation via the first host based on the cumulative gradient of the (m+3)-th model layer, where m is a non-negative integer. This method achieves time overlap between communication and computation, ensuring that the model parameters of each layer are ready in a timely manner when the computing device performs forward propagation, significantly reducing the impact of communication on training throughput.
Owner:SHANGHAI BIREN TECH CO LTD

Matrix control based high throughput plant phenotyping system

The application belongs to the technical field of agricultural monitoring, and discloses a plant phenotype high-throughput monitoring system based on matrix control, which comprises a matrix monitoring module, a matrix plant phenotype detection environment is constructed, and to-be-detected plant samples are arranged in N plant cultivation units; each plant cultivation unit is respectively arranged with a corresponding environment regulation and control device, and is mapped into an addressable matrix node based on a logical addressing rule, and the matrix nodes form an environment control matrix through a distributed parallel communication link; a multi-factor monitoring module is arranged, a multi-factor collaborative monitoring network is built, a distributed sensor array arranged in the matrix nodes is arranged, a preset matrix sampling time sequence table is used, and each matrix node is uniformly triggered to synchronously collect SPAC parameters based on the preset matrix sampling time sequence table; the application breaks through the limitations of traditional plant phenotype collection means in terms of processing scale, regulation accuracy and data space-time consistency, and realizes automatic and intelligent management of the whole process of plant phenotype monitoring.
Owner:INST OF SOIL SCI CHINESE ACAD OF SCI

Sodium ion battery charging and discharging control system and method

This invention relates to the field of battery control technology and discloses a sodium-ion battery charging and discharging control system and method, including a peripheral access interface, a multi-machine parallel communication module, a sodium-ion battery pack, and an inverter. The invention uses a control module to parse type identification data. When the parsed type identification data indicates that the connected energy storage medium is a sodium-ion battery pack, the control module calls a preset low-voltage discharge model. The control module unlocks the discharge cutoff voltage threshold set by the conventional discharge model and locks the lower limit of the discharge cutoff voltage to the deep over-discharge cutoff threshold. During the discharge state of the sodium-ion battery pack, the data sampling unit collects the terminal voltage data of the sodium-ion battery pack. When the terminal voltage data is within the range of the discharge cutoff voltage threshold and the deep over-discharge cutoff threshold, the control module generates a dynamic duty cycle command. The bidirectional DC-DC converter circuit receives the dynamic duty cycle command and maintains the DC bus voltage data constant.
Owner:FUJIAN SHIJI HUANA NEW ENERGY TECHNOLOGY GROUP CO LTD

Parallel transmission line detection method, device and system

The invention is suitable for the technical field of transmission equipment detection, and provides a parallel transmission line detection method, device and system, and the method comprises the steps: receiving a detection instruction sent by a controller in a target state; controlling the plurality of to-be-detected devices to enter a device detection mode according to a detection mode entering instruction in the detection instruction; when the to-be-detected devices enter the device detection mode, according to a starting detection instruction in the detection instruction, sequentially carrying out device detection on the plurality of to-be-detected devices to obtain a plurality of detection results corresponding to the plurality of to-be-detected devices; and determining an abnormal device in the plurality of to-be-detected devices according to the plurality of detection results. According to the method, the problems of complex detection process and low efficiency when the parallel bus equipment port of the half-duplex parallel communication system is detected in the prior art can be solved, so that the detection cost of a factory is reduced, and the production efficiency of the factory is improved.
Owner:SHENZHEN SUNMOON MICROELECTRONICS

Heterogeneous data underwater wireless transmission device and method with double light source channels

The invention provides a heterogeneous data underwater wireless transmission device and method with double light source channels, the method is applied to a wireless transmission device, the wireless transmission device comprises a first communication module and a second communication module, and the first communication module is in communication connection with the second communication module; wherein the first communication module at least has a first transmit-receive combination comprising a light source signal transmitting unit and a light source signal receiving unit, and the light source types of the transmitted light source signal and the received light source signal in the first transmit-receive combination are different; the second communication module at least has a second transmit-receive combination corresponding to the first transmit-receive combination, and the light source types of the transmitted light source signal and the received light source signal in the second transmit-receive combination are opposite to those of the first transmit-receive combination, so that bidirectional differential light source communication between the first communication module and the second communication module is realized. According to the invention, the transmitting-receiving combination of different light source combinations is arranged at two communication ends, so that parallel communication of double light source channels is realized, and the real-time data interaction requirement is met.
Owner:HANGZHOU AEROSPACE ELECTRONIC TECHNOLOGY CO LTD

Water electrolysis hydrogen production system

The utility model discloses a water electrolysis hydrogen production system, and relates to the technical field of hydrogen production, the water electrolysis hydrogen production system comprises an electrolytic tank, a hydrogen side separator, an oxygen side separator and a communicating pipe, the electrolytic tank is provided with a hydrogen side electrolysis product outlet and an oxygen side electrolysis product outlet; the hydrogen side separator is communicated with the hydrogen side electrolysis product outlet; the oxygen side separator is communicated with the oxygen side electrolysis product outlet; the number of the communicating pipes is not less than two, the hydrogen side separator and the oxygen side separator are connected through a plurality of communicating pipes which are connected in parallel, and switch valves are arranged on the communicating pipes. According to the technical scheme, the plurality of communicating pipes connected in parallel are arranged between the hydrogen-side separator and the oxygen-side separator, and the switching valves are arranged on the communicating pipes, so that the water electrolysis hydrogen production system can realize the balance of the liquid level of alkali liquor of the hydrogen-side separator and the oxygen-side separator under different working conditions; and the working load range of the water electrolysis hydrogen production system is comprehensively considered, so that the operation stability of the water electrolysis hydrogen production system is improved.
Owner:SUNGROW HYDROGEN SCI &TECH CO LTD

Optical circuit switch reconfiguration scheduling training acceleration system and method based on maximum network flow

The application provides an optical circuit switch reconstruction scheduling training acceleration system and method based on a maximum network flow. A heuristic scheme is used to optimize the parallel dimension of distributed training and the grouping of training tasks, reduce the communication flow across an optical circuit switch (OCS), and then, under the optimal grouping, select the optimal OCS connection configuration at the corresponding moment based on a maximum network flow algorithm to accelerate the global training time. By using a heuristic pruning method to optimize the combination relationship of data parallelism, tensor parallelism and pipeline parallelism, and placing the training tasks according to the rack where the GPU is located and the OCS domain, the situation of high-frequency tensor parallel communication across the OCS can be reduced.
Owner:SHANGHAI JIAOTONG UNIV

Communication network for a motor vehicle, motor vehicle and method for communicating data in a communication network

A communication network for a motor vehicle, comprising at least two parallel communication paths including a main path and a fallback path, which are designed to provide a redundant communication of data in the communication network, the communication network comprising a communication layer, which has at least one communication processor (to organize the communication of the data, and a cryptography layer, which has at least one cryptography processor to cryptographically protect the data to be communicated. The at least one cryptography processor is designed to cryptographically protect the data to be communicated along the at least two parallel communication paths by applying at least two different cryptography algorithms.
Owner:AUDI AG

Train approach warning system based on microcomputer monitoring

The utility model discloses a train approach early warning system based on microcomputer monitoring, including microcomputer monitoring system, early warning host computer and a plurality of early warning extension, early warning host computer includes: wired receiving unit, main control unit, wireless transmitting unit, the input of wired receiving unit is connected with microcomputer monitoring system for receiving train operation data, the output of wired receiving unit is connected with the input of main control unit through internal data bus for transmitting train operation data to main control unit, the output of main control unit is connected with the input of wireless transmitting unit through parallel communication interface for sending voice signal and early warning information to wireless transmitting unit, wireless transmitting unit includes analog talkback channel, digital talkback channel and law enforcement recorder channel, the output of wireless transmitting unit is connected with corresponding analog talkback channel, digital talkback channel and law enforcement recorder channel through wireless radio frequency signal respectively for sending early warning information to early warning extension.
Owner:CHINA RAILWAY XIAN GRP CO LTD +1

Wafer processing device, liquid supply assembly and wafer processing method

The invention provides a wafer processing device, a liquid supply assembly and a wafer processing method, and belongs to the technical field of wafer processing, the wafer processing device comprises a bearing disc, a swing arm and a liquid supply assembly, and the bearing disc is used for driving a wafer to rotate; the swing arm is arranged above the bearing disc in a swinging manner; the liquid supply assembly is arranged at the swing end of the swing arm, the liquid supply assembly comprises a liquid supply nozzle used for releasing fluid to the wafer, the liquid supply nozzle is provided with a first channel and a second channel, the first channel comprises at least two branch channels which are communicated in parallel, and the second channel is provided with a resorption structure which is communicated with the outlet end of each branch channel. After wafer processing is completed, conveying of the fluid to the first channel is stopped, air flow is input into the second channel, negative pressure is formed at the back-suction structure, residual fluid at the outlet end of the first channel is sucked back into the second channel, back-suction and leading-out of the residual fluid in the liquid supply nozzle are achieved, and it is avoided that the processing quality of the wafer is affected by fluid dripping.
Owner:HWATSING (BEIJING) TECH CO LTD

A parallel device, power converter, and parallel system

The embodiment of the application discloses a parallel connection device, a power converter and a parallel connection system, and is used for the technical field of the parallel connection system. In the embodiment of the application, a parallel connection interface is arranged on the parallel connection device, and the parallel connection interface is used for connecting multiple power converters through the parallel connection interface; the parallel connection device comprises a parallel connection control board, a communication interface is arranged on the parallel connection control board, and the parallel connection control board is in parallel communication with the multiple power converters through the communication interface; the parallel connection control board is used for acquiring power converter parameters to be synchronized, sending a parameter synchronization setting frame to the multiple power converters based on the parallel communication, and containing the power converter parameters in the parameter synchronization setting frame, so that the multiple power converters synchronize the power converter parameters based on the parameter synchronization setting frame. The multiple power converters are connected in parallel through the parallel connection device, and the power converter parameters after the parallel connection of the multiple power converters are synchronized; without developing a new power converter, development resources are effectively saved.
Owner:XIAMEN KEHUA DIGITAL ENERGY TECH CO LTD