149 results about "Cable transmission" patented technology

An apparatus includes a magnet comprising an electrically superconductive coil adapted to function in a driven mode. A magnet controller (210) is connected to the magnet. A power supply (122) adapted to provide direct current (DC) power to the magnet. An electrical connection is provided between the magnet to provide the DC power to the magnet. A communication interface (206) adapted to communicate signals across the cable between the power supply (122) and the magnet controller (210). The signals between the communication interface (206) and the magnet controller (210) are high-frequency (HF) signals that do not substantially interfere with the DC power transmitted across the cable.

The invention provides an acoustic-magnetic coupling backflow cable nondestructive testing and long-distance transmission integrated method and system, and relates to the technical field of backflow cable transmission detection, accurate fault identification and positioning are realized by sending acoustic-magnetic dual excitation signals to a backflow cable, collecting responses, extracting multi-source features and then performing fusion model analysis, and the detection accuracy is improved. The problem that a traditional method is low in detection precision is solved. After being coded and modulated, a detection result is stably transmitted to a receiving end through a long-distance transmission link, so that the integration of nondestructive detection and long-distance transmission of the acoustic-magnetic coupling backflow cable is realized, and the defect of instability of long-distance transmission is overcome. And a self-adaptive power amplification and frequency hopping anti-interference mechanism is adopted in the transmission process, so that the anti-interference performance, the stability and the environmental adaptability of signal transmission are improved, and the actual requirements of backflow cable detection and long-distance transmission in a strong electromagnetic interference environment and a complex working condition are met. By introducing a self-adaptive calibration mechanism and comparing with a reference signal, excitation and acquisition parameters are corrected in real time, and the detection precision and the long-term reliability are further improved.

A marine vessel according to one aspect of the present disclosure comprises: a hull that includes a bow part and a stern part which is positioned rearward of the bow part; a plurality of power consumption devices that are positioned in the bow part and that consume power; a main power source that is positioned in the stern part and that operates in a normal time; an emergency power source that is positioned in the stern part and that operates in an emergency; a main cable that delivers electricity which has been outputted from the main power source to the bow part; an emergency cable that delivers electricity which has been outputted from the emergency power source to the bow part; a main splitter that is positioned in the bow part and that splits the electricity which has been delivered by the main cable; an emergency splitter that is positioned in the bow part and that splits the electricity which has been delivered by the emergency cable; a main splitter cable that delivers the electricity which has been split by the main splitter to at least one of the plurality of the power consumption devices; an emergency splitter cable that delivers the electricity which has been split by the emergency splitter to at least one of the plurality of the power consumption devices; a main splitting chamber that is positioned in the bow part and that has the main splitter installed therein; an emergency splitting chamber that is positioned in the bow part and that has the emergency splitter installed therein; and a separation chamber that is positioned between the main splitting chamber and the emergency splitting chamber and that separates the main splitting chamber and the emergency splitting chamber.

The invention provides a dynamic monitoring system and method for a submarine optical cable array reservoir, which is applied to the technical field of marine geophysical prospecting, and comprises a wet-end subsystem positioned underwater and a dry-end subsystem positioned on a base bank, the dry end subsystem comprises a light source module used for generating an optical signal; the modulation transmitting module is used for modulating the optical signal to obtain modulated pulse light; the underwater wet end subsystem comprises an optical cable transmission module used for transmitting modulation pulse light; the optical fiber four-component node module is used for dynamically and continuously monitoring the reservoir for a long time, and modulating the acquired sound pressure signal and the triaxial vibration signal onto the modulated pulse light in response to the received modulated pulse light to form a return light signal; the dry end subsystem further comprises a modulation-demodulation module used for receiving the return optical signal and demodulating the return optical signal to obtain four-component monitoring data. According to the invention, sound pressure and three-axis vibration response can be integrated on the same node, and passive four-component synchronous acquisition is realized.

The application discloses a cable twisting device for a wind turbine, and belongs to the technical field of cable twisting, which comprises a mounting seat, a twisting motor and a limiting sliding rod are fixedly arranged in the mounting seat, a plurality of threading holes are arranged on the bottom surface of the mounting seat, and a mounting shaft is fixedly arranged at one end of the output shaft of the twisting motor; in the application, the twisting mechanism is arranged in a matched mode, through the design, the installation of each main cable can be quickly completed, different cables are separated from each other, damage caused by mutual contact and twisting of the cables is avoided, the adjustable cable transmission assembly is arranged, the protection effect of the cables can be effectively achieved when the cables are twisted, damage is avoided, and the cables can be longitudinally positioned to a certain extent after the twisting, the subsequent twisting of the cables is avoided, and the practical application effect of the whole device is greatly improved.

This invention discloses a wired-AND logic communication circuit based on optical fiber transmission, including a first level conversion circuit, a second level conversion circuit, a first laser control circuit, a second laser control circuit, photodetectors D1a and D1b, lasers D2a and D2b, and an optical fiber transmission system. The optical fiber transmission system is used to transmit the optical signal from laser D2a to photodetector D1b and to transmit the optical signal from laser D2b to photodetector D1a. The first level conversion circuit controls the state of a first port based on the state of photodetector D1a, the second level conversion circuit controls the state of a second port based on the state of photodetector D1b, the first laser control circuit controls the state of laser D2a based on the state of photodetector D1a and the state of the first port, and the second laser control circuit controls the state of laser D2b based on the state of photodetector D1b and the state of the second port. This invention solves the problem of limited long-distance cable transmission.

The application belongs to the technical field of power cable installation equipment, and particularly relates to an angle-adjustable cable power transmission tower cross arm, which comprises a supporting device and a cross arm device. The supporting device comprises a mounting panel, a supporting arm and an adjusting mechanism, the cross arm device is arranged on the supporting device, the adjusting mechanism is arranged on the supporting device, the relative position of the cross arm device and the supporting device is changed by using the adjusting mechanism, and the cross arm device is adjusted in multiple postures such as parallel, inclined support and vertical. One end of the supporting arm is fixed to the upper portion of the front side of the mounting panel, the other end extends outward, and a load-bearing hinge seat is arranged at the end of the supporting arm away from the mounting panel. The angle-adjustable cable power transmission tower cross arm has the multiple-posture adjusting function, the adjusting mechanism with the telescopic function and the double-hinge connection structure are connected, the multiple-posture switching of the cross arm device is realized, the load-bearing hinge seat is used as a rotating fulcrum, the extension length of the telescopic rod is changed, the cross arm device is switched among multiple postures such as parallel, inclined support and vertical, and the differentiated requirements of complex terrains and line directions are met.

The utility model relates to a cooling device, and provides a sheath cooling device for cable production, which comprises a pipeline, a separation cover, a liquid collection frame and the like, a cooling channel is arranged in the pipeline, no less than two isolation covers are arranged on the pipeline at intervals, spraying cavities are formed in the isolation covers, the spraying cavities in the isolation covers are communicated with the cooling channel in the pipeline, and a cable needing to be cooled penetrates in from the right end of the pipeline, rightwards passes through the cooling channel and the spraying cavities in the isolation covers and penetrates out from the left end in the pipeline. Liquid collecting frames are arranged at the lower parts of the isolation covers, and the inner spaces of the liquid collecting frames are communicated with the inner spaces of the isolation covers. According to the utility model, the plurality of spraying areas are arranged on the cooling channel, and the temperature of the spraying liquid in each spraying area is gradually reduced along the transmission direction of the cable, so that a stepped temperature control effect from high temperature to low temperature is formed, the cable sheath is ensured to be properly cooled at different stages, the water consumption is reduced, and the production efficiency is improved. And the quality problem caused by non-uniform cooling is avoided, uniform curing of the cable sheath is ensured, and the cooling efficiency and the energy utilization rate are improved.

The utility model discloses a railway vibration damping four-in four-out optical cable joint box, which comprises a shell assembly, a main frame body, a fiber splice tray and a buffer vibration damping gasket, first accommodating grooves are formed in two axial ends of an inner cavity of the shell assembly, a second accommodating groove is formed between the two first accommodating grooves, the main frame body is arranged in the shell assembly, and the buffer vibration damping gasket is arranged in the shell assembly. The shell assembly comprises a first accommodating groove and a second accommodating groove, two ends of the first accommodating groove are bent to form a bracket plug for penetrating an optical cable, the bracket plug is embedded in the first accommodating groove, the fiber melting disc is arranged on the main frame body and is accommodated in the second accommodating groove, and the buffer anti-vibration pad is arranged on the frame body between the bracket plug and the fiber melting disc to completely isolate the main frame body from the shell assembly. Through the above mode, the vibration-damping four-in four-out optical cable joint box for the railway can realize'four-in four-out 'multichannel transmission, meets the requirements of railway and subway optical cable transmission, isolates the main frame body from the shell through the vibration-damping gasket, reduces vibration, avoids frequent replacement, improves reliability, prolongs the service life, and reduces cost.

The invention discloses a cable transmission time delay test system, which comprises a pulse generation module, a tee joint or circulator, a signal amplification shaping module and a time difference measurement module, and is characterized in that the output end of the pulse generation module is connected with the first port of the tee joint or circulator, and the second port of the tee joint or circulator is electrically connected with a to-be-tested cable; the third port of the tee joint or the circulator is electrically connected with the input end of the signal amplifying and shaping module, and the output end of the signal amplifying and shaping module is electrically connected with the input end of the time difference measuring module. A test pulse signal is injected into the to-be-tested cable through the second port of the tee joint or the circulator, then an echo signal reflected by the tail end of the to-be-tested cable is collected, the time interval between the test pulse signal and the echo signal is measured, and finally the transmission time delay of the to-be-tested cable is calculated according to the time interval. Therefore, the test can be completed only by contacting one end of the cable, the installed equipment does not need to be disassembled, the on-site test process is simplified, and the efficiency is improved.

The invention discloses an inhaul cable transmission type active braking air duct grille assembly which comprises auxiliary grilles symmetrically arranged on the two sides of a main grille, and the two auxiliary grilles are linked through an inhaul cable assembly. Each auxiliary grille comprises a frame, blades erected in the frame through a rotating shaft and a driving assembly arranged on the outer side of the frame, the inhaul cable assemblies are connected with the driving assemblies respectively, a motor is arranged on the outer side of the auxiliary grille on one side and drives the driving assemblies to act, and the driving assemblies drive the auxiliary grille on the other side to act through the inhaul cable assemblies. The double-side grille has the beneficial effects that by means of the structure and the driving form, the synchronism of the grilles on the two sides is enhanced, the use of motors is reduced, the overall space occupation is small, the cost is low, and the use performance of a vehicle can be greatly improved through independent air duct control.

This application relates to the field of transmission status early warning technology, and in particular to a method and system for early warning of optical cable interruptions based on spatiotemporal correlation analysis. The method includes: adaptively adjusting the window length according to the coupling growth rate between optical cable segments in historical periods, extracting optical power attenuation values ​​to obtain an attenuation sequence and performing differential processing; calculating the coupling coefficient and propagation delay of the differential sequence, constructing directed edge weights based on this and updating the coupling growth rate; extracting the trend features of the attenuation sequence, combining the directed edge weights to perform weighted aggregation on adjacent optical cable segments to obtain fusion features, and then combining the coupling growth rate to obtain the risk probability; when the risk probability is greater than the early warning threshold, calculating the remaining safe time based on the attenuation change rate and issuing an early warning work order. The technical solution of this application can issue early warnings and provide emergency repair guidance in a timely manner before the optical cable transmission link is interrupted.

This invention relates to the field of communication support technology, and in particular to a multi-functional cascaded multi-network converged communication support system. The system includes a central control console, multiple sets of leaky cable communication and rescue lighting lines, and multiple cable reels. One end of the central control console is cascaded to the cable reels via the leaky cable communication and rescue lighting lines. Adjacent cable reels are cascaded and expanded through the leaky cable communication and rescue lighting lines. The leaky cable communication and rescue lighting lines are wound around the cable reels and can be easily extended or retracted according to actual needs. This multi-functional cascaded multi-network converged communication support system solves problems such as communication coverage, multi-service data transmission, directional lighting, and power supply coordination in confined and complex environments through wired and wireless multi-mode converged communication, wideband leaky cable transmission technology, and integrated design. It improves fire rescue efficiency and firefighter safety, ensures smooth communication for various equipment used by firefighters, and achieves unimpeded communication wherever firefighters are present.

The utility model discloses an environmental illuminance sensor, comprising an illuminance sensor housing, an illuminance detection module embedded on the front surface of the illuminance sensor housing, a battery compartment arranged on one side of the illuminance sensor housing, a built-in battery placed in the battery compartment, an insertion mounting groove arranged on the front surface of the illuminance sensor housing, and a power supply arranged in the insertion mounting groove. A plugging installation groove is formed in one side of the illuminance sensor shell, a sealing plate is slidably installed in the plugging installation groove, an external antenna is fixedly connected to the other side of the illuminance sensor shell, a cable connector is fixedly connected to the external antenna, a plugging groove is formed in the cable connector, a limiting clamping groove is formed in the inner wall of the plugging groove, and fixing feet are symmetrically and fixedly connected to the upper face and the lower face of the illuminance sensor shell. Through mutual cooperation of the external antenna and the plug assembly, cable transmission or wireless signal transmission data can be selected according to specific requirements of a user, a proper signal transmission mode can be selected according to specific use scenes of the user, and the applicability is higher.

This utility model discloses an anti-loosening fixing structure for cable joints, relating to the field of cable joint technology. It includes a first cable body, with a first cable head fixedly connected to one end of the first cable body. A second cable head is engaged with one end of the first cable head, and a second cable body is fixedly connected to one side of the second cable head. This anti-loosening fixing method achieves initial connection by splicing the first and second cable heads. A clamping plate, in conjunction with a double-ended screw and nut, tightly secures the two, ensuring a stable connection. Rotating the fixing frame causes a locking plate to engage with a slot for positioning, further stabilizing the structure. The fixing frame drives an adjusting screw to rotate within a threaded sleeve, pushing an annular plate to further reinforce the cable within the mounting sleeve. This strengthens the connection strength of the cable joint from various aspects, effectively reducing the risk of cable joint detachment, ensuring the stability and safety of cable transmission, and extending the cable's service life.

The utility model relates to the technical field of circuit breakers, and discloses a primary and secondary fusion complete column-mounted circuit breaker which comprises a circuit breaker body and a control assembly, and the control assembly comprises a control box body and a galvanized steel plate installed on the inner wall of the control box body. According to the primary and secondary fusion complete column-mounted circuit breaker, the convex block and the guide rail are slidably clamped and matched in the connecting assembly, and the lock rod is automatically reset and locked through the telescopic spring, so that the quick assembly work of the control box body and the circuit breaker body is realized, and bolt tools and high-altitude complex operation are omitted; the galvanized steel sheet is embedded in the control box body, and the signal acquisition module, the communication module and the data processing unit are integrated, so that the signal transmission path is effectively shortened, the problem of electric signal attenuation caused by long cable transmission is solved, the precision is improved, and meanwhile, the galvanized steel sheet and the protective cover form auxiliary support of double-layer electromagnetic shielding and overlapped supporting plates; and the connection stability of equipment under vibration is ensured.

Methods and systems are disclosed for charging a battery utilizing a negotiable power supply in which a source device providing the negotiated power signal and a sink device negotiate the signal. The sink device includes a controller to request a shaped power signal from the source device. More particularly, the source device may receive a power signal from a power source, such as a wall outlet and convert the power signal into a requested negotiated power signal. During the communication between the devices, the sink device may provide one or more parameters of a negotiated power signal. In response, the source device may control a power converter circuit to convert the power signal received from the power source into a shaped negotiated power signal that includes the parameter. In general, the negotiated power signal may take any shape as requested by the sink device.

The invention relates to the technical field of power system reliability evaluation, in particular to an offshore wind power submarine cable transmission power probability safety evaluation method and system. According to the method, multi-dimensional data management, dynamic prediction modeling and self-adaptive decision optimization are creatively fused, so that double breakthrough of safety assessment precision and robustness is realized. Abnormal data removal, blank value filling and normalization are carried out on the data in the data level, data noise is reduced, and key features are completely improved; in a prediction level, an Att-BiLSTM model is constructed, and wind power output prediction is realized through bidirectional time sequence feature extraction and attention weight dynamic distribution; in the aspect of probability safety assessment, a deep reinforcement learning framework based on a PPO algorithm is designed, the submarine cable power safety margin is dynamically described, full-chain technical support is provided for offshore wind power high-reliability grid connection and power transmission safety monitoring, and the method has wide industrial application prospects.

The utility model relates to the field of joints, in particular to a waterproof pull-increasing three-joint joint, which comprises a first joint, a second joint, a third joint and a cable. A second connector is arranged on one side of the first connector, a third connector is arranged between the second connector and the first connector, and cables are arranged between the third connector and the first connector and between the third connector and the second connector and above the third connector. The first connector, the second connector and the third connector are respectively connected to different devices or circuits, signals or current can enter a cable connected with the connectors through the connectors and then are transmitted to other connectors along the cable, and in the process, the silica gel sealing sleeve in the third connector can form a sealing layer to prevent moisture from invading, so that the service life of the connector is prolonged. Meanwhile, the cable clamps at the two ends of the cable can fix the cable and prevent the cable from shaking and pulling at the joint, electrical safety accidents such as short circuit and electric leakage caused by electrical conductivity of water can be avoided through the method, and in addition, the connection position still keeps a stable connection state.

This utility model relates to the field of transmission cable technology and proposes a lightweight shielded high-efficiency transmission cable, comprising: a cable and connecting shells located at both ends of the cable; the connecting shell has a locking interface inside, and the inner wall of the locking interface has a locking block, one side of which is fixedly connected to a rotating ring. By rotating the rotating ring with bolts, the locking block is pushed to slide along the inner wall of the limiting groove via a limiting slider, thereby locking the locking block into the groove of the cable, thus fixing the cable and connecting the cable to the connector in the connecting shell. Furthermore, a display shows the data of the cable transmission information, and indicator lights indicate whether the cable is operating normally: green light indicates normal operation, red light indicates a fault, and yellow light indicates the cable is not connected, facilitating maintenance personnel to quickly locate the fault point and perform maintenance on the transmission cable.

Methods and systems are disclosed for charging a battery utilizing a negotiable power supply in which a source device providing the negotiated power signal and a sink device negotiate the signal. The sink device includes a controller to request a shaped power signal from the source device. More particularly, the source device may receive a power signal from a power source, such as a wall outlet and convert the power signal into a requested negotiated power signal. During the communication between the devices, the sink device may provide one or more parameters of a negotiated power signal. In response, the source device may control a power converter circuit to convert the power signal received from the power source into a shaped negotiated power signal that includes the parameter. In general, the negotiated power signal may take any shape as requested by the sink device.

The application discloses an explosion-proof gun head device for cable transmission perforation and relates to the technical field of oil well drilling, and aims to solve the technical problem that the inside of the explosion-proof gun head is prone to safety hazards when repeatedly subjected to high temperature. The application is characterized in that the elastic wave section and the outward-pulling elastic sheet are made of the same material and synchronously deformed, the pre-tightening force increment is offset by one-time linear compensation of the compensation block, the creep acceleration cycle is broken, and the spring fatigue is delayed; the directional rotary movement of the compensation block is realized through the universal ball and the inclined guide gap, the secondary range compensation is completed by cooperating with the gradually changing arc side, the safe distance between the transmission thunder needle and the detonator is accurately kept, and the misfire is eliminated; the elastic section of the stable movement structure provides normal damping, the damping is adaptively enhanced with the compensation action, the static friction dead zone is eliminated, the piston flutter jamming is inhibited, the peak value damping of the secondary rotary movement is triggered, the piston violent movement caused by the suction effect is converted into controllable displacement, the action threshold drift is avoided, and the non-target layer mis-triggering is eliminated.

The utility model discloses a swing type cable guide frame which comprises two fixed panels, two guide wheel sets are arranged between the two fixed panels, and two tensioning wheels are arranged on the sides, close to the bottoms, of the two fixed panels. The detection assembly is arranged on the fixed panels and used for detecting swing in the cable winding and unwinding process, the transmission assembly is used for transmitting the swing of the cable, the detection assembly comprises an L-shaped plate fixedly connected to one side of one of the two fixed panels, and the L-shaped plate is provided with a distance sensor; the side, located below the distance sensor, of the fixed panel is connected with a distance measuring disc through a rotating shaft. Through the arrangement of the detection assembly, the distance sensor is used for detecting the distance measuring disc in real time, the output speed and the output torque of the cable collecting motor can be conveniently adjusted in real time through a fuzzy algorithm according to the real-time position and the change trend of a cable, and therefore the cable can be more stably collected and released.

The invention provides a wired transmission system and method. The wired transmission system comprises a sending unit, an optical coupling and multiplexing unit and a receiving unit, the sending unit comprises a first digital signal processor and a plurality of sub-sending units; the first digital signal processor is used for generating sub-electric signals according to the transmission data; the driving circuit of the sub-sending unit is used for controlling the light source to convert the sub-electric signal into a sub-optical signal in a preset polarization state; the optical coupling and multiplexing unit comprises a micro lens array and an optical waveguide; the micro-lens array is used for converging or collimating the sub-optical signals sent by the sub-sending units; the optical waveguides are used for transmitting the converged or collimated sub-optical signals to the sub-receiving units corresponding to the corresponding sub-sending units; the receiving unit comprises a second digital signal processor and a plurality of sub-receiving units; the receiver in the sub-receiving unit is used for converting a plurality of sub-optical signals transmitted through the optical waveguide into sub-electric signals; and the second digital signal processor is used for converting the plurality of sub-electric signals into transmission data.

The invention discloses a water pipe connecting rod mechanism with cable protection, and belongs to the field of water pipe connection, and the water pipe connecting rod mechanism comprises a connecting rod part, one end of the connecting rod part is connected with a long pipe assembly, the other end of the connecting rod part is connected with a three-way assembly, the long pipe assembly is used for introducing a water source and a cable, and the three-way assembly is used for dividing the water source and the cable into two parts for leading out; the connecting rod component comprises two connecting rod elbow assemblies and three joint assemblies; the water pipe and the cable pipe are integrated in the same mechanism through the water pipe connecting rod mechanism, the three problems of cleaning water source transportation, cable transportation and cable protection are solved at the same time, the structure is compact, the integration degree is high, the water pipe and a cable channel do not need to be independently arranged, the cable is located in the water pipe, limiting protection can be conducted on the cable, shaking of the cable is avoided, and the service life of the cable is prolonged. The safety and the reliability of cable transmission are ensured; the joint assembly can rotate flexibly, the mechanism is endowed with good flexibility, the posture can be flexibly adjusted along with the movement of the cleaning nozzle, and the flexibility is high.

A cable having a first connector electrically coupled to the first end of the cable, where the first connector includes a first energy storage device and a first cryptography processor, and a second connector electrically coupled to the second end of the cable. The second connector includes a second energy storage device and a second cryptography processor. The first energy storage device is configured to power the first cryptography processor for encrypting transmission data transmitted through the first connector over the cable to the second connector, and for decrypting reception data received by the first connector over the cable from the second connector. The second energy storage device is configured to power the second cryptography processor for encrypting transmission data transmitted through the second connector over the cable to the first connector, and for decrypting reception data received by the second connector over the cable from the first connector.

The invention discloses a nondestructive detection system for a steel belt. The nondestructive detection system comprises an electromagnetic detection unit, a mechanical arm unit, a steel belt transmission unit and a control unit which are integrally arranged, the electromagnetic detection unit comprises an electromagnetic detection probe for locally exciting the steel belt to obtain an electromagnetic characteristic signal and transmitting the electromagnetic characteristic signal to the detection controller through a cable; the mechanical arm unit comprises a mechanical arm fixing platform and a six-axis degree-of-freedom mechanical arm, the electromagnetic detection probe is arranged at the tail end of the mechanical arm, the mechanical arm drives the electromagnetic detection probe to ascend, descend and transversely move, and the steel belt conveying unit comprises roller equipment for conveying a steel belt and a roller encoder and is used for detecting the conveying speed and the conveying position of the steel belt; the control unit comprises a control host, a mechanical arm controller and a detection controller, wherein the mechanical arm controller and the detection controller are in communication connection with the control host. The system can be used for carrying out real-time nondestructive detection on the conveyed and operated steel belt, the detection efficiency and accuracy are high, the system layout is convenient and easy to implement, and the automation degree of steel belt production detection is improved.

Disclosed are systems and methods of monitoring a well that includes a production tubing installed in the well and supported by a wellhead with an annulus between the production tubing and a well casing. While the production tubing remains installed in the well, a valve of the wellhead is opened to provide access to the annulus through a side port of the wellhead. A cable guide is inserted through the valve, the cable guide including a conduit for inserting a sensing cable through the cable guide. A sensing cable is inserted through the conduit of the cable guide and into the annulus through the side port. One or more parameters of the well are measured using the sensing cable and signals representative of the parameters are transmitted along the sensing cable. The signals from the sensing cable are obtained and processed using a computing system to determine the parameters.

The invention, which relates to the technical field of the education demonstration device, discloses an airplane steel cable transmission device practical training device comprising a bottom cavity seat, a practice platform assembly arranged at the top of the bottom cavity seat, a teaching assembly arranged at one side of the bottom cavity seat, and a heat dissipation group arranged at the top of the protection cavity. A control tablet computer is slidably connected to an inner cavity of the protective cavity, heat dissipation hole sets are formed in the left side and the right side of the control tablet computer, and a winding assembly is arranged at the top of the inner cavity of the protective cavity; the winding assembly comprises a first motor fixedly connected to the interior of the protection cavity, an inner cavity of the protection cavity is rotationally connected with a winding roller, and the winding roller is fixedly connected with the output end of the first motor. According to the practical training device, practical operation is carried out while teaching videos are watched, students can learn theoretical knowledge and carry out practical operation by themselves, and the teaching quality of the practical training device is improved.

The utility model relates to the technical field of cable powder coating, and discloses an electric wire and cable powder coating machine which comprises a machining table, moving wheels are arranged at the bottom of the machining table, cable transmission assemblies are arranged on the front side and the rear side of the machining table respectively, and a powder transmission assembly is arranged at the top of the machining table. The powder conveying assembly comprises a conveying inclined frame, a storage box, a feeding pipe, two containing plate bodies, two stepping motor pieces, two eccentric blocks, two connecting shaft rods, two connecting rod bodies, two connecting blocks, two impact plates, a bearing rectangular plate, two first connecting plate pieces, two reset springs and two second connecting plate pieces. The storage box is fixedly connected to the left side of the top of the machining table. According to the electric wire and cable powder coating machine, through the arrangement of the powder conveying assembly, the powder supply effect can be optimized, the vibration auxiliary powder supply assembly can be arranged, the situation that powder blockage occurs or the excessive uniformity is affected due to the too low discharging speed is not likely to occur, and the effect is good during use.