32results about How to "Orderly transmission" patented technology

The invention belongs to the field of aviation electronic technology, and discloses a method for generating a static scheduling table of a time-triggered (TT) service. The method comprises the following steps: equally dividing a basic cycle of TT Ethernet into a plurality of time slots, wherein each time slot satisfies the transmission of a maximum Ethernet frame at a one-hop link; and determining the scheduling order of tasks according to the cycle size of TT tasks and the length of data frames, performing scheduling priority ranking for the TT tasks, sequentially arranging a leftmost transmission time slot for each hop of links of each TT task on the transmission path, minimizing the length of a time interval occupied by the TT service, and ensuring that all the TT tasks are transmitted orderly without conflicts. According to the method disclosed by the invention, the scheduling problem of the TT service can be solved, and each terminal node can transmit all the TT tasks orderly without the conflicts; the waiting delay of ET services can be reduced, and the real-time performance of the ET services can be improved; and meanwhile, the saved network bandwidth can be applied to the transmission of more services, and the utilization rate of network links can be increased.

The invention discloses a working substance flowing system of a piston reciprocating internal combustion engine and regulation and control setting thereof. An upper end of a frame moving up and down along the rotation of a power shaft is connected with an engine cylinder piston [7]; the lower end of the frame is made into a pressure cylinder piston [5]; an air inlet pipe[14], an air inlet check valve[2] and an air compression check valve[3] are arranged on a bottom cover plate of the pressure cylinder; air sucked from the air inlet pipe[14] by the pressure cylinder is sprayed by water mist for intercooling in compression; compressed air is stored in an air storage channel, tangentially supplied to an air inlet[10] of an engine cylinder sleeve; a rod head of the air compression check valve[3] is connected with the compressed air regulating and controlling device. An exhaust port [12] of the engine cylinder is arranged in the rear side of the cylinder top; a pressurized air bypass channel tightly pressed on the lower side of a flashboard-type exhaust valve [21] and an air suction check valve [22] of the upper side of a vent-pipe inlet cool an exhaust system and exhaust air and have the effects of both decontamination and preventing an exhaust gas turbine from surging. The supercharging mechanism has compact structure, indirect transmission, stable pressurization and cooling function; the working substance flowing system is provided with the regulating and controlling device with optimized performance and is convenient to the actualization of a small and medium sized engine.

The invention belongs to the technical field of avionics, and discloses a time-triggered Ethernet-based static scheduling table generation method and an avionics system. A porosity concept is introduced into a TT service static scheduling table generated by a traditional partition scheduling scheme; the centralized scheduling TT data frame service with the highest priority is dispersed and scheduled through a posteriori pore generation method; Scheduling and transmission are carried out on follow-up RC services through holes between TT services, a fast path selection algorithm is adopted for sequentially selecting paths for all TT communication tasks, and idle time slots meeting the scheduling and transmission requirements are selected for nodes in all sections of links passing through thefast path selection algorithm; And a TT static scheduling table is generated. According to the invention, the transmission delay and network jitter of the RC service are reduced, the occurrence of the situation that data frames compete for a physical link is avoided, and meanwhile, the time domain determinacy and stability of the avionics system based on the time-triggered Ethernet are ensured.

This invention discloses a kind of distributed grating image processing data transfer system of the figure and image printing treatment. In this invention method after the grating image processing controller interprets the printing describing language to the document data use the user data paper agreement to distribute it to the grating processor for grated process. In this invention system the grating image processing controller connects with the multiple grating image processor through the first data transfer module and the first transfer module is distributed to the grating image processor for grated process through the user data paper agreement after the first transfer module interprets the printing describing language to the document data in the grating image processing controller. By using this invention the transfer velocity is quicker and the occupation for the network resource is less and it improves the getting velocity of the grating image processing system for the processing work resource at the same time improves the processing velocity of the distributed grating processing system and it is satisfied for the requirement of high speed printing output device.

The invention provides a method and system to dispatch the transmission resources, comprising the following steps: Step A. the transmission resources allocated to the business by consulting the generated protection flow and the transmission resources allocated are smaller than or equal to the protection flow; Step B. whether the transmission resources run out or not is determined. Turning to the step E if the transmission resources run out; or continuing to determine whether all the business are visited and turn to step C if all the business are visited; or turning to step A; Step C. Visiting the business again to supplement the transmission resources needed in the transmission; Step D. Determining whether the transmission resources run out or not, and turning to step E if yes, or continuing to determine whether all the business are visited or not. Turning to step E if yes or turning to step C; Step E. implementing the data transmission after the allocation process is finished. The invention also provides a system to dispatch the transmission resources. The invention allocates the transmission resources according to the actual data transmission demand, which not only avoids the waste of the resources in the fixed or static allocation of the transmission resources, but can also prevent the low transmission efficiency caused by the packet-loss as a result of the transmission data surpassing the allocated bandwidth when a plurality of users transmit the data at the same time.

The invention discloses a one-way physical separating net-brake based on USB interface in the information safe technological domain to switch network data, which comprises the following hardware parts: transferring control switch, writing protection switch and USB memory, wherein the host accesses USB memory as long as transferring control switch connects USB memory and host; when USB memory connects low-dense grade network host, the USB writing protection switch is set at writable condition, which realizes data writing and cancelling; when USB memory connects high-dense grade host, the USB writing protection switch is set at reading-only condition, which realizes data reading. The invention realizes reliable real-time transmission for one-way data, which switches software conveniently.

The invention discloses an on-line monitoring outdoor acquisition device for relay protection of a power system in the technical field of power systems. The acquisition device comprises an acquisition conversion module, an information processing module, a communication module, a storage module, a quick interface module, a power supply module and a system clock. The acquisition device realizes local acquisition of information, and provides judgment basis for protective acquisition loop monitoring by modeling according to IEC61850, converting the information into digital signals, transmitting the digital signals through fibers and forming a closed loop circuit between the acquisition device and the primary protective acquisition device.

The invention relates to a CAN (controller area network) system of a tractor and a data information transmission method. The CAN system comprises a plurality of function control units in the tractor, the function control units are connected through a CAN bus, and a CAN transceiver is connected to the CAN bus. When data information of the function control units conflicts during CAN bus transmission, the CAN transceiver reads and transmits the data information according to priority levels of the data information corresponding to the function control units. The CAN system of the tractor and the data information transmission method have the advantages that a CAN network is constructed according to the function control units in the tractor, and through the CAN bus, real-time performance, flexibility and reliability in data information transmission are quite high; the data information of the function control units are transmitted through the CAN bus according to the priority levels, so that data information conflict is avoided, and the data information can be transmitted in order.

The invention discloses a communication system and equipment based on big data, and relates to the technical field of communication management. The problem that the communication effect is poor is solved. The system comprises a big data management platform and an information control center used for comprehensively managing communication data information, and the big data management platform is in communication connection with the information control center. The information control center comprises a data acquisition module used for acquiring communication information, a data integration module used for trimming the acquired information, and a data processing module used for calculating and analyzing the sorted communication information. The equipment comprises an information control center in communication connection with a big data management platform, the information control center is in communication connection with communication adding equipment and mobile equipment, and the mobile equipment is in communication connection with the communication adding equipment. According to the invention, each communication channel is controlled and used for optimal resource allocation, so that the communication transmission is more hierarchical and orderly, and the overall communication transmission efficiency is improved.

The invention belongs to the technical field of data communication, in particular to a CPA-based field protection adaptive data communication system and method. The method comprises a CPA connection sub-process, a CPA operation sub-process and a CPA disconnection sub-process. According to the invention, problems in the prior art that in a communication process of carrying out proposal adaptation based on ATT and a read-write instruction, the adaptability is poor are solved; how to avoid the influence of frequent disconnection and reconnection of ATT and bottom layer transmission is solved; themethod has the advantages that data transmission of the PHD layer is not affected by frequent disconnection and reconnection of ATT layer transmission, synchronous interaction of the application layer is supported, possible unreliable conditions of bottom layer transmission are shielded, and reliability of communication data in bottom layer transmission is guaranteed.

The invention discloses zipper laser cutting equipment, and particularly relates to the technical field of zipper production. The zipper laser cutting equipment comprises a workbench, a zipper windingroller and a rack; the zipper winding roller and the rack are installed on the workbench; a zipper is wound around the zipper winding roller; and a laser cutting head used for cutting the zipper is installed on the rack and is arranged in a liftable mode; a conveying belt fixed to the workbench is arranged below the laser cutting head; an upper idler wheel mechanism and a lower idler wheel mechanism which are used for conveying zippers are arranged between the workbench and the rack; the upper idler wheel mechanism is installed on the rack; and the lower idler wheel mechanism is installed onthe workbench. According to the zipper cutting device, zippers can be orderly conveyed to the laser cutting head to be cut; the phenomenon that the zippers bounce up due to the fact that one end of each zipper is broken in a cutting process is avoided; the zipper cutting efficiency is improved; and the production efficiency is improved.

The embodiment of the invention provides a communication network building method and device, electronic equipment and a storage medium, and the method comprises the steps: a first terminal node receives first time synchronization frames from N first nodes, and obtains a first time synchronization frame according to the routing depth of each first node and the signal strength of each received first time synchronization frame; determining a father node from the N first nodes, and sending a first network access registration frame to the gateway through the father node; enabling the gateway to obtain the network access registration frame of each first-level node, allocating time slot information to each first-level node according to the node information of the child node included in each first-level node, and sending the allocated time slot information of each first-level node to each first-level node; and finally enabling the terminal node to receive the first time slot information from the father node. Namely, the first terminal node determines the father node according to the routing depth and the signal strength of the node so as to construct the optimal communication path, and the communication path can be dynamically adjusted at any time, so that the communication reliability is improved, and the flexibility is high.

The invention relates to an SPI communication method and device and a storage medium. In the application, an SPI sending end transmits information to an SPI receiving end in the form of a first message in a preset data format, wherein the first message comprises valid data and a valid data check code; the SPI sending end sends an end mark signal after sending a first message; and when the SPI receiving end receives the first message, calculating a verification value of effective data in the first message, whether the verification value of the effective data is the same as the verification code of the effective data is compared, if so, a second message containing a response state to the SPI sending end is fed back by the SPI receiving end through the MISO signal line. Otherwise, the SPI receiving end feeds back a second message containing a non-response state to the SPI sending end through the MISO signal line, and discards the corresponding first message; and the SPI sending end controls data transmission between the SPI sending end and the SPI receiving end according to the second message content. Response in the SPI communication process, the verification of effective data and the control of the SPI data transmission process are realized under the condition of not adding GPIO (General Purpose Input / Output).

The invention provides a tile blank positioning and aligning device having a counting function and relates to the technical field of tile production equipment. The tile blank positioning and aligningdevice comprises a frame; the frame is rotationally connected with a plurality of conveying rollers; one end of each conveying roller is provided with a gear; each gear is connected with a motor through a chain; the frame is also provided with a retaining mechanism; the retaining mechanism comprises an infrared surveillance equipment, a rotating shaft and a cylinder; the infrared surveillance equipment is connected with the cylinder through a wire; the rotating shaft is fixedly connected with angle iron; one end of the angle iron is fixedly connected with a connecting rod; the upper end of theconnecting rod is articulated with a piston rod of the cylinder; the angle iron is connected with a plurality of stop claws; each stop claw is provided with a touch switch; each touch switch is connected with the cylinder through the wire; and the frame is also provided with a reversion preventing mechanism. The tile blank positioning and aligning device provided by the invention has the beneficial effects of aligning the conveyed tile blanks and contributing to machining and clearing in subsequent procedures.

The invention discloses a simple network management protocol (SNMP)-based reliable data transmission method. In the method, two variable object identities (OIDs), namely a data transmission value domain and a control domain, are added into a management information base (MIB) expanded for data transmission, and a control domain OID node comprises two OIDs, namely, the OIDs of a data type variable and a system status variable, wherein the transmitted data type is specified according to the data type, a data value is transferred by a value domain, the reliability of every transmission is guaranteed by a system status, and once a management station receives a data transmission request of an agent or the agent receives the data transmission request of the management station, values of the system status of both the management station and the agent are changed into 1, at the time, any other data transmission requests of the agent or the management station are ignored till the data transmission is finished, and the value of the system status is changed into 0 again. Therefore, each data transmission can be fully and correctly finished, and the data is guaranteed to be transmitted orderly,correctly and reliably.

The invention provides a method and a system of dispatching transmission resources. The method of dispatching the transmission resources comprises the following steps: Step A. allocating the transmission resources to the service by consulting generated protection flow, wherein the allocated transmission resources are smaller than or equal to the protection flow; Step B. judging whether the transmission resources run out or not and turning to the step E if the transmission resources run out, otherwise continuing to determine whether all the service are visited and turning to step C if all the service are visited, otherwise turning to step A; Step C. visiting the service again to supplement the transmission resources needed in the transmission; Step D. judging whether the transmission resources run out or not, and turning to step E if yes, otherwise continuing to determine whether all the service are visited or not, turning to step E if yes otherwise turning to step C; Step E. implementing the data transmission after the allocation process is finished. The invention further provides a system of dispatching the transmission resources. The method and the system of dispatching the transmission resources allocate the transmission resources according to the actual data transmission demand, avoid the waste of the resources in the fixed or static allocation of the transmission resources, and can prevent the low transmission efficiency caused by packet-loss as a result of the transmission data surpassing the allocated bandwidth when a plurality of users transmit the data at the same time.

The invention discloses a double-layer board separating and transporting device for wood processing. The device comprises a main conveyer belt, and main conveyer belt mounting shells are arranged on the two sides of the main conveyer belt; an upper-layer conveyer belt is arranged above one end of the main conveyer belt, and upper-layer conveyer belt mounting shells are arranged on the two sides of the upper-layer conveyer belt; and a lower-layer conveyer belt is arranged below one end of the main conveyer belt. According to the device, through arrangement of a plate collecting mechanism and a plate layered conveying mechanism, processed plates can be quickly and sequentially conveyed in a layered manner, the labor forces are effectively freed, and the working efficiency is improved.

The invention discloses an intelligent industrial mechanical arm driving system based on an ROS system, and relates to the technical field of mechanical arm driving systems. The intelligent industrial mechanical arm driving system based on the ROS system comprises the ROS driving system, the ROS driving system is in signal connection with an air pressure driving module, a PLC control module and a DSP processing module, and terminals of the air pressure driving module, the PLC control module and the DSP processing module are in signal connection with an image acquisition module. According to the intelligent industrial mechanical arm driving system based on the ROS system, the mechanical arm can rotate, move and clamp in a noise-free mode, then the movement flexibility of the mechanical arm is guaranteed, then it is guaranteed that the movement form, the movement freedom degree, the grabbing quality and the stress condition of the mechanical arm can be optimized and executed in time, the movement accuracy of the mechanical arm is guaranteed, and the working efficiency is improved. And it is guaranteed that the arm waist joint, the shoulder joint, the elbow joint and the wrist joint of the mechanical arm and the gripper at the tail end are opened and closed flexibly and freely, and the clamping work stability of the robot is improved.

The invention discloses an office information transmission device based on a cloud computer. The office information transmission device is composed of a cloud server, a network module, a service module, a voice playing module, and a display module. The cloud server communicates with a computer, a fax machine or a telephone through the network module to ensure sharing of resources in an office; the network module provides a platform for information transmission, so that the resources can be transmitted timely and accurately; the service module includes various service information modules, so that the office staff can select information transmission ways freely; the display module displays selection information or a video of the service module, so that a client can carry out inquiring and selection; and the voice playing module plays the voice of service information. According to the office information transmission device, with the service module, the office staff can carry out selection of needed services freely. Moreover, the office information transmission device has advantages of having a simple structure, being easy to implement, and being capable of realizing ordered and efficient transmission of office personnel information.

The invention provides a ship networking multi-channel Beidou communication gateway system, which comprises a data collection module and a communication control module, and is characterized in that the data collection module comprises a data collection front end, a data processing sub-module, at least one man-machine interface and at least one Beidou communication interface; The communication control module is in communication connection with the data processing submodule, the man-machine interface and the Beidou communication interface. The data acquisition front end is in communication connection with the data processing submodule. The data acquisition front end is in communication connection with at least one shipborne data acquisition device; The man-machine interface is in communication connection with at least one upper computer; The Beidou communication interface is in communication connection with a Beidou satellite terminal; Wherein the Beidou satellite terminal is in communication connection with the Beidou satellite navigation system, and the Beidou satellite navigation system is in communication connection with a shore-based dispatching center. According to the ship networking multi-channel Beidou communication gateway system, real-time data transmission of people and ship banks can be achieved, ship navigation data are monitored in real time, and good expansibility, flexibility and portability are achieved.