75results about How to "Does not affect normal transmission" patented technology

The invention relates to an automatic coin quality detection device, in particular to a high-precision multifunctional automatic coin production quality detection device based on a visual system, realized by applying an image processing technology. The detection device comprises a combined illumination imaging light source, an image receiving unit, an image processing unit, a result output unit and a damaged coin discarding device, wherein the image receiving unit, the image processing unit, the result output unit and the damaged coin discarding device are sequentially connected; the combined illumination imaging light source adopts a mode that surface light sources at a high angle and a low angle illuminate at the same time; the image receiving unit collects image data on the coin surface; the image processing unit process the collected image data, confirms and discards defective products according to a production standard and transfers real-time detected images and analysis result information to the result output unit; and the damaged coin discarding device discards the ultra-detective products according to the control information of the image processing unit. The invention has the objective detection standard, can quantitatively prescribe, improves the production efficiency, can continuously upgrade the detection speed, emancipates the labor force and improves the automation degree of coinage.

The invention discloses a large and medium-sized unmanned aerial vehicle communication relay system. The system comprises an airborne 4G broadband communication base station, a line-of-sight airbornedata terminal, a satellite communication airborne data terminal, an airborne switch, an airborne protocol module, a high-definition video encoder and a high-definition photoelectric load which are arranged on an unmanned aerial vehicle, and a satellite communication ground data terminal, a ground command control station and a ground portable terminal, wherein the satellite communication ground data terminal is in two-way signal connection with the ground command control station; the airborne 4G broadband communication base station and the ground portable terminal or other flying platforms arein video and voice communication connection and are in two-way signal connection with the airborne switch; the airborne switch is in two-way signal connection with the satellite communication airbornedata terminal through the line-of-sight airborne data terminal; and the high-definition photoelectric load is in one-way signal connection with the airborne switch through the high-definition video encoder. According to the system, a 4G relay function of the unmanned aerial vehicle within an oversight range can be realized, the wide area network access is achieved through a satellite, and the relay communication function of a ground unit or the other flying platforms is achieved.

The present invention discloses preventing data transmission interrupted protection method in multitape parallel SERDES data links. It contains chip through detecting data frame to detect link status, when detecting error state, system stopping through error state occurring link transmitting data; when detecting data link get right, system recovering through said link transmitting data. The present invention ensures data transmission without interruption and automatic recovering full speed transmission in link get right through link status automatic-detection and balance in SERDES link parallel transmission scheme. The present invention also provides high-speed number reduced property and flexible configuration ability, in low service flow rate user capable of active switching off one or more link in parallel SERDES data link without influencing data regular transmission.

The invention discloses a vehicle-ground broadband access method based on a wireless mesh network technology, in which an access method for wireless mesh points consist of gateway nodes and a plurality of access points is specified in a layer 2 address-based layer 2.5 protocol between a layer 2 protocol and a layer 3 protocol. The method comprises the following steps: a, creating and updating a tree-based routing table for each wireless mesh point, which is used for recoding physical addresses for a parent node and a child node, and creating and updating a proxy table for each wireless mesh point, which comprises table entries of all vehicle-carried subnet point below the tree-based routing table of the wireless mesh point; b, data frame transmission, which realizes data format conversion, data transmission, data receiving and forwarding between a wireless mesh network and a vehicle-carried subnet as well as between wireless mesh gating nodes and a public network through the wireless mesh points; c, node switch, in which channels of the same frequency are adopted for access channels of all wireless mesh point for realizing seamless switching between the nodes. The method has the advantages of convenient networking, low cost, high-speed for data transmission, high reliability.

The invention relates to a network traffic monitoring method and system, and the method comprises the steps: S1, monitoring a network device, and capturing a data packet from network data generated bya first service module; s2, storing the data packet; s3, analyzing the data packet, and generating a dynamic rule according to an analysis result; s4, importing a static rule, and monitoring and filtering the network data generated by the first service module according to the dynamic rule and the static rule; and S5, transmitting the monitored and filtered network data to a second service module,one of the first service module and the second service module being a network application service module, and the other being a network interface. According to the network flow monitoring method andsystem provided by the invention, the monitoring mode is flexible, the monitoring content is reliable, and the normal transmission of network data is not influenced.

The invention discloses an automation equipment communication method based on a CAN bus. The communication method is based on a CAN bus protocol, and an application layer protocol employs a CAN data frame with an expansion frame format. An arbitration domain comprises a priority identification domain, a source address domain, a target address domain, a source task number domain and a target task number domain. The communication method comprises the following steps that the CAN data frame sent by a sender via the CAN bus is received; priority of the CAN data frame is acquired; whether the priority of the CAN data frame is the highest priority is judged; if the judgment result is yes, data interaction is performed between the CAN data frame and a CAN application communication layer via a high-speed communication mode; and if the judgment result is no, the CAN data frame is sent to a queue with the corresponding priority, and data interaction is performed between the CAN data frame and the CAN application communication layer via an information queue mode. According to the automation equipment communication method based on the CAN bus, real-time and multitask processing can be performed on a data message.

The invention discloses a self-recovery stop type protection circuit for a low-voltage and high-power safety barrier. The self-recovery stop type protection circuit comprises a power switching circuit which is connected between a non intrinsic safety input circuit and a load and used for controlling switch-on and switch-off of a circuit, a current detection circuit which is connected with the power switching circuit and used for detecting current in the circuit in real time, an overcurent and shortcircuit judgment circuit which is connected with the current detection circuit, a switch-off pulse output circuit which is connected with the overcurent and shortcircuit judgment circuit, and a driving circuit which is connected with the switch-off pulse output circuit, wherein the input end of the overcurent and shortcircuit judgment circuit is connected with a reference circuit; the reference circuit is connected with the non intrinsic safety input circuit; and the driving circuit comprises an oscillation circuit for making the power switching circuit automatically re-switch on after the power switching circuit is switched off. The self-recovery stop type protection circuit has a simple structure, low power loss, high output power, a wide application range and high popularization and application value; the normal transmission of high-power electric energy is not influenced; and a requirement for intrinsic safety output is met.

The invention relates to an OTDR optical path detection device and a method thereof. The device comprises an optical input interface, an optical output interface, a detection light emission unit, an optical assembly, a detection light receiving unit, a data processing unit, a micro-control unit, a power supply unit and a communication interface unit. According to the invention, a detection light emission function, a diffusion light and reflected light receiving function, a detection data processing function and a unit control function are integrated. The light transmit-receive integrated device is embedded in an optical network to be measured. Then, the optical network to be measured can be detected at real time, and normal service light transmission is not influenced. Thus, a special OTDR instrument for and fiber optics detection and a matching testing device are eliminated; a step of fiber fault detection is simplified; and complexity and cost of optical network maintenance are reduced.

The invention discloses an adjustable tubular bus fitting, and belongs to the technical field of tubular bus connection. The adjustable tubular bus fitting comprises a tubular busbar clamp, a guide rod, an expansion joint and an aluminum section, wherein an upper tubular busbar and a lower tubular busbar are connected by the tubular busbar clamp and the expansion joint; the two ends of the aluminum section are respectively connected with one side of the expansion joint; the two ends of the guide rod are respectively connected with the other side of the expansion joint; the tubular busbar clamp comprises an upper tubular busbar clamp and a lower tubular busbar clamp, wherein the upper tubular busbar clamp clamps the upper tubular busbar, the upper tubular busbar is provided with an upper cover plate, and the upper cover plate is connected with the upper tubular busbar clamp through a bolt; the lower tubular busbar clamp clamps the lower tubular busbar, the lower tubular busbar is provided with a lower cover plate and the lower cover plate is connected with the lower tubular busbar clamp through a bolt; the adjustable tubular bus fitting further comprises an upper clamping plate and a lower clamping plate; the lower end of the upper tubular busbar clamp is provided with the upper clamping plate; the upper end of the lower tubular busbar clamp is provided with the lower clamping plate; the upper tubular busbar clamp, the upper clamping plate, the lower tubular busbar clamp and the lower clamping plate are one-time molded by casting by using aluminum alloys; and the mounting distance can be adjusted without field setting-out and processing.

The invention discloses a hierarchical monitoring system. A power supply is connected to the first power supply port of the first network camera through a power line. The second power supply port andthe third power supply port of the first network camera are respectively connected to the first power supply port of the second network camera and the first power supply port of the third network camera. A monitoring center network switch is connected to the first network interface of the first network camera through a network line. The third network interface and the second network interface of the first network camera are respectively connected to the first network interface of the second network camera and the first network interface of the third network camera. The second network interfaceand / or the third network interface are electrically connected to a network accessory terminal. The monitoring center network switch is separately connected to a manager video monitor and a manager console. The network accessory terminal comprises at least a entrance guard, a microphone, a iris recognition device, a face recognition device, an intrusion alarm system, a network hard disk recorder,a network alarm and a network interphone.

The invention provides an unmanned aerial vehicle voice relay communication system, which comprises an airborne voice radio station, a sight distance airborne data terminal, a satellite airborne dataterminal, a sight distance ground data terminal, a satellite ground data terminal and a ground command control station, wherein the airborne voice radio station, the sight distance airborne data terminal and the satellite airborne data terminal are installed on an unmanned aerial vehicle platform; the airborne voice radio station works in a frequency band of 108MHZ-399.975MHZ and is provided witha single-path half-duplex voice transmitting and receiving channel; the airborne voice radio station comprises a terminal module, a channel module, a power amplifier module and an antenna; and the ground command control station comprises a link access unit, an airborne radio station ground control box and an earphone-microphone set. According to the system, the voice relay communication function of the unmanned aerial vehicle with a navigation management control tower or other aircraft platforms within the range of sight distance and the range of over-sight distance can be realized.

A radio frequency (RF) integrated circuit with electrostatic discharge (ESD) protection and an ESD protection apparatus thereof are provided. The ESD protection apparatus includes a substrate, an RF bonding pad, and an ESD protection unit. The RF bonding pad for transmitting RF signal is disposed upon the substrate. The ESD protection unit is disposed under the RF bonding pad. Wherein, The ESD protection unit includes an inductor electrically connected between the RF bonding pad and the power rail.

The invention relates to a continuous separation device, which comprises a transmission part, the transmission part includes a power device, and a conveyor belt driven by the power device, and a material drop hole is opened on the conveyor belt; a shaking part, the shaking part is arranged on Below the conveyor belt, the shaking part is used to shake the conveyor belt to separate the material powder on the conveyor belt and output it in different directions. The shaking part includes a rotating seat and a shaking device rotatably arranged on the rotating seat; Separation while transmission, continuous work and easy clogging of the filter screen affect the quality of the feed.

The invention belongs to the field of power system relay protection, and relates to a line differential protection method based on a wireless network retransmission mechanism. The method comprises thefollowing steps: a line protection device sends local side data through a 5G wireless network and receives opposite side data; when a certain frame of data is abnormally received by the local side device, a retransmission request mark is sent out in the next frame of sent data and carries the time mark of the data needing to be retransmitted, and after the opposite side device receives the retransmission request, a retransmission data frame and the next frame of data are sent together and carry the retransmission mark; after receiving the retransmission data, the device at the side supplements missing data, carries out differential protection calculation in time, and sends a retransmission success mark to the opposite side at the same time; and if the device on the side does not receive the retransmission data, a secondary retransmission request is sent in the same way, secondary retransmission is performed on the opposite side, and if the secondary retransmission fails, a retransmission failure event is recorded. By adopting the method, the problem that the data window is invalid due to abnormal data transmission of individual frames in line differential protection based on wireless communication is solved.

The invention provides a message transmission method and device. The method comprises the steps of receiving service messages of target service sent by a server, wherein service information of the target service is carried in the service messages; obtaining guaranteed bandwidths corresponding to the service information of the target services; and transmitting the service messages of the target service according to the guaranteed bandwidths. According to the method and the device, different demands of different pieces of service for transmission resources can be reflected by the message information; therefore, a controller can allocate the suitable guaranteed bandwidths to different pieces of service according to different demands; the normal transmission of the service messages of the service with low transmission resource demands is not influenced; moreover, more guaranteed bandwidths are allocated to the service with high transmission resource demands; the service message transmission performance is improved; and the service is not interrupted.

The invention discloses a cross-tier interference alignment method for a cognitive heterogeneous cellular network based on polarization information processing. Two cross-tier interference in the cognitive heterogeneous cellular network is processed by utilizing polarization information processing and interference alignment principles, so that when the normal transmission in a macro cell is not influenced and the maximum system downlink capacity is kept, an error rate of signal transmission in a small cell is greatly reduced and the transmission reliability of the small cell against a multi-path fading channel and the cross-tier interference is improved. According to the method, a receiving polarization state of a small cell user is optimized, and a purpose of aligning the cross-tier interference of the macro cell on the small cell user to a zero space of a target signal is realized; a sending polarization state of a small cell base station is optimized, the cross-tier interference of the small cell on a macro cell user is aligned to the zero space of the target signal, the normal transmission of the macro cell user is ensured, and meanwhile, a signal transmission error of a small cellular network is greatly reduced.

The invention provides a data transmission method and system of a USB camera. The data transmission system of the USB camera comprises the USB camera, a first USB extension controller, a second USB extension controller and a main control device, wherein the first USB extension controller is used for processing first USB signals collected by the USB camera to form USB-like signals, and the second USB extension controller is used for processing the USB-like signals to form second USB signals. Due to the fact that the USB-like signals are reinforced signals, the USB-like signals can be transmitted to a place which is 100 meters away through a network cable, and normal transmission of the USB-like signals cannot be influenced. Due to the fact that a USB connecting line supports on-line power supply, a special on-line power supply device is not needed, and the equipment cost is reduced compared with the cost of a USB signal extension scheme in the prior art.

The invention relates to a temperature detecting device, in particular to a multipoint temperature detecting system with liquid level measuring function. The system comprises temperature sensing units, a liquid level sensing unit and a processing unit, wherein the temperature sensing units and the liquid level sensing unit are electrically connected with the processing unit; and the processing unit is used for measuring, displaying and outputting temperature and liquid level information. The system is characterized in that the temperature sensing units are multipoint temperature sensors distributed in different liquid level positions; and the multipoint temperature sensors are electrically connected with the processing unit. The multipoint temperature detecting system can independently output multipoint temperature.

The invention discloses a method for using a vehicle-mounted optical transceiver. First, the front-end camera performs high-resolution digitalization of multi-channel video, audio and data through the audio and video transmitting module of the optical transceiver to form a high-speed digital stream, and then transmits the function of the FPGA chip. Next, the multiple digital streams are multiplexed, and the electrical signal is converted into an optical signal through the first photoelectric converter quickly, and then transmitted to the audio and video receiving module of the optical receiver through the optical fiber; the audio and video receiving module receives the signal and sends it through Receive the FPGA chip for demultiplexing, return to various digital signals, and finally restore to analog video, audio and data.

The invention discloses an online printed matter screening system and relates to the technical field of packaging printing auxiliary devices. The online printed matter screening system comprises two bases fixed to upper end faces of the two sides of a printed matter conveying device. The upper end faces of the two bases are sequentially provided with an inspecting and controlling device, a removing device and a abandoned version recycling device in the conveying direction of the printed matter. The removing device comprises two supports and a removing plate rotationally connected between the two supports. The inner side walls close to each other of the two supports are fixedly connected with attraction mechanisms connected with a controller. The attraction mechanisms are located over the end, far away from the controller, of the removing plate. When the attraction mechanisms attract the end of the removing plate in a connection manner, the end, close to the controller, of the removingplate abuts against the upper end face of the printed matter conveying device in a connected manner. The supports are provided with a reversing mechanism used for pushing the removing plate to be faraway from the printed matter conveying device. According to the online printed matter screening system, the attraction mechanisms drive the removing plate to overturn to remove the abandoned version printed matter, normal conveyance of the printed matter by the printed matter conveying device is not influenced, and high-speed conveyance of the printed matter conveying device is guaranteed.

The invention belongs to the technical field of paper processing machinery and relates to an air suction counting dividing device for a paperboard stacking machine in the production of a corrugated board. The air suction counting dividing device for the paperboard stacking machine is characterized in that a fixed air suction box and a movable air suction box which are arranged below a conveying belt of the stacking machine are fixedly connected with a lighter stand; and the end part of the lighter stand at the end at which the movable air suction box is arranged is connected with a cylinder piston. When a cylinder receives a per paperboard counting command sent by a front segment transverse cutting machine to extend and retract, an exhaust opening of the movable air suction box is higher than the conveying belt of the stacking machine to be connected with a conveyed paperboard to suck a paperboard and ensure the paperboard to stop until the space between the paperboard and a previous paperboard stack reaches a required spacing, or the exhaust opening of the movable air suction box is lower than the conveying belt of the stacking machine to be separated from the paperboard without influencing the normal conveying of the paperboard. The specific paperboard is stopped or lowered by an air suction mode and the sucking-stopping separate stacking is implemented, so that the distance between the previous and next paperboard stacks is opened and the aim of accurately counting in stacks (or dividing) is fulfilled.

The invention discloses a pin-type connector of a reinforced communication cable, which comprises a fixing shell, a clamping shell and a cable conveying pipe. A cover plate is clamped at the top of the clamping shell; a plurality of pins are connected to the interiors of a mounting hole and a limiting groove; a plurality of threaded holes are uniformly formed in the mounting hole and the limitinggroove; a metal sleeve is in threaded connection in the threaded hold; a plug is connected to the middle of the end, away from the mounting hole, of a pressing plate; a plurality of jacks are uniformly formed in the plug; the middle end of the top of the cable conveying pipe is longitudinally connected with a bolt rod; the bottom of the bolt rod penetrates through the cable conveying pipe to be connected with a top plate; and the bottom end of the interior of the top plate is connected with a push plate. The plug can be detachably connected with the clamping shell through the pins, and the interior of the plug can be independently detached from one end of the clamping shell to be replaced after being damaged, and normal transmission of communication signals can be ensured. The plug is replaced independently, so that the cost is saved and the use cost is reduced.

A data transmission method applied to the data transmission service of the Acknowledged Mode (AM) is provided. The method comprises: after initiating the Move Receiving Window (MRW) process according to the discarding mode of a service data unit (SDU), the Radio Link Control (RLC) entity of a sending terminal sends a status packet with the Move Receiving Window Super Field (MRW SUFI) and constructs a temporary sending window; and before receiving the Move Receiving Window Acknowledgement (MRW ACK) sent by the RLC entity of a receiving terminal, the RLC entity of the sending terminal sends the Acknowledged Mode Data Protocol Data Unit (AMD PDU) existing in the temporary sending window. A data transmission system is also provided. It can make greater use of the bandwidth during the MRW process by employing the present technical solutions, so as to improve the sending rate without influencing the normal transmission of the MRW process.

The invention relates to the technical field of steel structure civil defence door welding equipment, in particular to steel structure civil defence door leaf panel welding equipment which comprises atransport unit, a welding device and a turnover device, wherein the transport unit is composed of transport wheels capable of transporting forward and backward; the welding device and the turnover device are arranged side by side in the transport direction of the transport unit; the transport unit bears a to-be-welded civil defence door frame; a to-be-welded panel is placed on the civil defence door frame; the welding device is used for carrying out welding between the panel and the civil defence door frame; and the turnover device is used for overturning the welded the panel and the civil defence door frame. The invention aims to provide the steel structure civil defence door leaf panel welding equipment. With adoption of the technical scheme, the technical problems that the welding difficulty is high and the efficiency is low when a sealing panel and the reverse side of the steel structure civil defence door are welded at the present stage are solved.

The invention discloses a network terminal cabinet system for a distributed control system (DCS) instruction, and belongs to the technical field of terminal cabinets. The network terminal cabinet system comprises a DCS instruction input terminal, a DCS instruction output terminal, a running status terminal, a process control terminal, a control linkage terminal, a power module, a DCS instruction input and output module, a programmable logic controller (PLC) data processing module, a status collection module and a communication terminal, wherein the DCS instruction input and output module, the PLC data processing module and the status collection module are connected with the power module; the communication terminal is connected with the PLC data processing module; the running status terminal is connected with the status collection module; and the PLC data processing module is also connected with the DCS instruction input and output module and the status collection module. The system is low in cost, has a DCS instruction status variation and variation time recording function, and can upload recorded information to a substation supervisory control and data acquisition (SCADA) system, acquire the running status of each loop of a motor control center (MCC) in a centralized way, perform data processing and remotely transmit data to a DCS instruction room.

The invention discloses a detection device for deviation of a guide belt in a cloth drying machine. The detection device comprises two detection mechanisms which are symmetrically arranged on the two sides of the guide belt, wherein the detection mechanisms comprise leaning wheels, detection shafts, fixing shafts, detection springs and pressure sensors; the leaning wheels are propped against the side edge of the guide belt; the leaning wheels are arranged on the detection shafts in a sleeving manner; waist-shaped through holes are formed in the central parts of the detection shafts; the fixing shafts are inserted in semi-circular arcs at one ends of the waist-shaped through holes; raised blocks are formed on the inner walls of semi-circular arcs at the other ends of the waist-shaped through holes; the pressure sensors are fixed to the raised blocks; one ends of the detection springs are fixed to the pressure sensors; and the other ends of the detection springs are fixed to the fixing shafts. The detection device has the advantages that whether the guide belt deviates or not can be effectively detected and normal transmission of the guide belt is not influenced.

The invention discloses an intelligent auxiliary system for coal conveying belt operation of a thermal power plant. The intelligent auxiliary system comprises the components of a three-fluid spraying dust suppression system which mixes an agent with a dust suppression function and water for obtaining a soup mixture, crushes the soup mixture for obtaining spray particles by means of gas and sprays out the spray particles through a nozzle; a coal conveying belt fire early-warning system which acquires a thermal infrared image of the coal conveying belt in real time, wherein the thermal infrared image is acquired by a thermal infrared image acquisition device, calculates a temperature value in the thermal infrared image, and generates an early-warning signal on the condition that the temperature value in the thermal infrared image exceeds a preset threshold; a factory-grade central control system which receives data of the three-fluid spraying dust suppression system and the coal conveying belt fire early-warning system, and performs central control on the three-fluid spraying dust suppression system and the coal conveying belt fire early-warning system; and a cloud data monitoring system which receives data of the factory-grade central control system and performs cloud storage data analysis. The system of the invention realizes central control and facilitates management on each auxiliary sub-system of the thermal power plant.

The invention discloses an aquatic shrimp processing and drying device. The device comprises damping mechanisms, a servo motor, a fixing frame and a main body, wherein a PLC is installed on one side of the main body, and the damping mechanisms are arranged at the four corners of the bottom end of the main body. By installing sliding strips, sliding grooves, locking bolts, bolt assembling holes, adrying chamber, the fixing frame, a reinforcing layer and U-shaped reinforcing ribs, the structure of the device is optimized; when the device is used, on one hand, a user can use a sliding connectionstructure composed of the sliding strips and the sliding grooves to disassemble and assemble the drying chamber and the fixing frame in cooperation with the locking and fixing effects of the lockingbolts, so that the device has the advantage of being combined, is convenient to disassemble and maintain and can be used for a long term; and on the other hand, the reinforcing layer and the U-shapedreinforcing ribs are arranged in the side wall of the drying chamber, so that the structural strength of the drying chamber is enhanced and the drying chamber is not easy to deform and crack during long-term use, disassembly and maintenance.

The invention discloses a video information transmission method. The video information comprises subcode flows in multiple levels. The method comprises steps that a transmission priority sequence of the multiple levels is set according to user input; according to transmission network conditions and the transmission priority sequence, subcode flows of to-be-transmitted levels are determined; and the subcode flows of the to-be-transmitted levels are transmitted. Different users have different demands on the different-level information, transmission priority grades of a user can be set according to self demands, so the information of a most-important or most-concerned-about level can be acquired under the bad network conditions, moreover, level division of video code flows is carried out, normal transmission of contents of other levels is not influenced by a transmission error generated by a certain level, and thereby loss caused by the transmission error is reduced. The invention discloses a video information transmission system.

The invention provides a message transmission control method, a message transmission control device and network equipment. The control method comprises the following steps: the network equipment receives a back pressure message, and the back pressure message carries path information of a congested network message; and the network equipment caches the network message corresponding to the path information in a path queue according to the back pressure message, and carries out back pressure on the path queue. According to the above method, the network equipment receives the back pressure message.According to the invention, which path is subjected to message congestion can be determined according to the path information carried by the back pressure message; therefore, the network message of the congested path is cached in the path queue according to the path information; performing back pressure on the path queue; therefore, the flow and the speed of the network device sending the networkmessage to the downstream device in the congested path are reduced, congestion diffusion and queue head blockage of the downstream device are prevented, and the network device only performs back pressure on the network message on the congested path and does not perform back pressure on other paths, so that the service on other irrelevant paths is not influenced.