271 results about "Cable transmission" patented technology

A method is provided to measure the complex sensitivity of hydrophone data channels across a range of frequencies by using a water-filled tank with proximate boundaries. A hydrophone array and reference hydrophone are helically affixed to a test fixture resting on a rotation platform. When the test fixture is submerged in the tank; the platform rotates about a contour of the platform in intervals for a predetermined time interval before indexing to the next angle. Signals transmitted by an acoustic projector in the tank are received on the hydrophones of the line array and the calibrated reference hydrophone. Electrical signals from the reference hydrophone are transmitted over an electrical cable and received by the acoustic data processor for use in calibrating the hydrophone line array. Electrical signals from the hydrophones of the hydrophone line array are also transmitted to the data processor.

The invention discloses a deep hole presplitting intelligent visiting and evaluating system and a method thereof, and belongs to the field of drilling peeping, and the system comprises a deep hole presplitting visiting bionic robot which is provided with a hydraulic dynamic reducing mechanism; the multi-modal fusion detection module is used for realizing omnibearing acquisition of monitoring data by adopting optical acoustic mechanics three-source sensing; the embedded real-time modeling module is internally provided with a large model and performs real-time three-dimensional modeling by programming a crack three-dimensional reconstruction algorithm; the edge calculation prediction module carries a heterogeneous calculation platform and is internally provided with a laser radar, and obstacle avoidance and accurate depth setting are carried out; and the communication and energy module adopts a dual-redundancy communication link, transmits high-broadband data by using an optical fiber composite cable, and transmits a key early warning signal. By adopting the deep hole presplitting intelligent visiting and evaluating system and the method thereof, the problems of low detection efficiency, single aperture adaptability and data dimension, insufficient analysis function and no prediction function of a traditional drilling peeping instrument are solved.

A vehicular sensing system includes a sensor disposed at a vehicle and sensing exterior of the vehicle. The sensor is operable to capture sensor data. An electronic control unit (ECU) includes electronic circuitry and associated software, with the electronic circuitry of the ECU including a data processor operable to process sensor data captured by the sensor and transferred to the ECU. The sensor connects with the ECU via a cable. The sensor is electrically powered by a power source, and the electrical power from the power source is not provided to the sensor via the cable. The cable carries an enable signal from the ECU to the sensor. T\Responsive to the sensor receiving the enable signal from the ECU, sensor data captured by the sensor is transferred to the ECU via the cable.

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.

The utility model belongs to the technical field of cable braiding, and relates to a high-speed braiding machine for cable production, which comprises a braiding main body and an output pipe arranged on one side of the braiding main body, a guide device is arranged in the output pipe, a first guide plate and a second guide plate are arranged, and a driving group is used for controlling a first connecting plate and a second connecting plate to move. The distance between the first guide plate and the second guide plate is controlled through movement of the first connecting plate and the second connecting plate, the adjacent sides of the first guide plate and the second guide plate are each provided with a plurality of guide blocks, and the edges of the adjacent sides of the multiple guide blocks are all arranged to be in an arc shape. The arrangement of the first guide plate and the second guide plate can guide the transmission of the braided cables, the arrangement of the plurality of guide blocks enables the transmission of the braided cables to be smoother, and the guide transmission of the cables of different specifications is realized by controlling the distance between the first guide plate and the second guide plate.

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 relates to a multi-dimensional heat distribution pipeline monitoring system and method based on an integrated monitoring unit, and the system comprises an underwater sound sensing module which employs piezoelectric ceramics as a transduction material, deforms under the sound pressure effect to generate an electric signal, converts the electric signal into an output signal through an amplification circuit, and transmits the output signal to a data receiving and transmitting module; the high-frequency pressure module and the high-frequency pressure sensing module adopt an MEMS (Micro Electro Mechanical System) process to directly manufacture a strain resistor on a stainless steel isolation diaphragm as a resistance element, and the isolation diaphragm is stressed to generate an electric signal which is transmitted to the data receiving and transmitting module through a connecting cable after being amplified; the temperature sensing module outputs an electric signal based on the characteristic that a metal resistor changes along with temperature, and the electric signal is amplified and then transmitted to the data receiving and transmitting module through a connecting cable. According to the invention, the daily operation environment and the abnormal environment of the pipeline can be distinguished, and the dependence on the material and environment of the pipeline is reduced, so that the sensing monitoring unit has higher adaptability, and leakage can be better judged.

This invention provides an FPGA-based encoding method for single-core cable logging, comprising: detecting whether the edge of the original transmitted signal changes; if the edge of the original transmitted signal changes, encoding the original transmitted signal using two pulse signals to obtain a final output signal in which positive and negative levels cancel each other out. This invention uses an FPGA module and an external driving circuit in synergy to encode the original transmitted signal, resulting in a final output signal in which positive and negative levels cancel each other out. This invention effectively avoids baseline drift-induced glitches that interfere with the signal and affect data accuracy, thus solving the problem of level fluctuations affecting the signal in single-core cable transmission for oil logging.

The invention provides a crane power transmission device, which relates to the technical field of cranes, and comprises a chassis, a rotating seat, an upper mounting seat, a compensation transmission device, a multi-stage transmission mechanism, a lower mounting seat, a cable transmission mechanism and an oil pump, the transmission locking device has the advantages of being reasonable and simple in structure, low in production cost, convenient to install and complete in function, independent work or cooperative work of multiple oil pumps can be achieved without additionally arranging multiple sets of driving sources or complex gear shifting mechanisms by arranging the multiple transmission locking devices, the number of transmission parts is reduced, the fault occurrence probability is reduced, and the service life of the oil pumps is prolonged. Meanwhile, the installation process is simplified, and the manufacturing cost is saved; the transmission compensation mechanism is arranged, when the rotating base rotates independently and no power is input, the acting force can be counteracted through gear reverse driving, mistaken starting of the oil pump is avoided, energy waste is prevented, and the transmission accuracy is improved; when power is input, the oil pump can be normally driven to work, and the problem that power transmission is disordered when the rotating base rotates is effectively solved.

The invention discloses a cable defect and joint positioning method and device. The device comprises a self-adaptive coaxial structure recovery sleeve installed outside a cable terminal; the test clamp is used for connecting the vector network analyzer and the cable; and the vector network analyzer applies a high-frequency excitation signal of a preset frequency band to the to-be-detected cable through a high-frequency signal generation module, and synchronously acquires broadband impedance spectrum data of the cable transmission link through a broadband response acquisition unit. The broadband impedance spectrum comprises characteristic information of a cable body, a joint and a defect position; and the upper computer is used for processing the broadband impedance spectrum data acquired by the vector network analyzer. And the vector network analyzer obtains broadband impedance spectrum data, extracts a positioning spectrogram by using Keyser window windowing processing and CZT conversion, and accurately identifies an abnormal reflection peak to position a defect or a joint position. The method can effectively eliminate the influence of the mismatching of the cable terminal structure on the test result in the field FDR test, thereby improving the accuracy and reliability of cable defect and joint positioning.

The invention relates to the technical field of communication guarantee, in particular to a multifunctional cascade multi-network convergence communication guarantee system which comprises a center console, a plurality of groups of leaky cable communication lifesaving lighting lines and a plurality of groups of wire coils. Cascade expansion between the adjacent wire coils is achieved through the leaky cable communication lifesaving lighting lines, and the leaky cable communication lifesaving lighting lines are wound on the wire coils and can be wound and unwound at will according to actual requirements in use. According to the multifunctional cascaded multi-network converged communication support system, through wired and wireless multi-mode converged communication, a wide-frequency-band leaky cable transmission technology and an integrated design, the problems of communication coverage, multi-service data transmission, guiding illumination, power supply cooperation and the like in a closed environment and a complex environment are solved, the fire rescue efficiency and the self safety are improved, and the safety of the system is improved. Smooth communication of various types of equipment of firefighters is guaranteed, and unimpeded communication is realized.

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.

System for controlling the loss of trading billing energy meters of the main transformer in a coal-fired power plant, characterized in that it includes a special measuring voltage component, a special measuring current component and a component for energy measurement: wherein the special measuring voltage component is used to convert the 220 kV bus voltage into a secondary measuring voltage based on a preset voltage conversion ratio, and a control cable is used to transmit the secondary measuring voltage to the electrical energy measuring device; The special measuring current component serves to convert the primary current flowing through the high-voltage switch of the main transformer station into a secondary measuring current based on a predetermined current conversion ratio, and uses a control cable to transmit the secondary measuring current to the energy measuring device via a control cable; wherein the energy measuring device is used to receive the secondary measuring voltage and the secondary measuring current in order to perform the calculation of energy consumption, thereby determining the actual energy produced by the generator in the coal-fired power plant.

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.

A robot includes: links, connected in series to a base via joints; actuators, driving the joints to relatively displace a corresponding pair of links connected to each other; control devices, distributedly arranged in the base and the links and controlling the actuators; a communication cable, comprising an optical fiber connecting the control devices to each other and transmitting information; and light amount measurement devices, measuring the amount of light of an optical signal transmitted to the control devices via the communication cable. Each control device monitors the amount of light measured by the light amount measurement device corresponding thereto, and determines a state of the communication cable corresponding thereto based on the amount of light.

The application provides a crane power transmission device, relates to the technical field of cranes, and comprises a chassis, a rotating seat, an upper mounting seat, a compensation transmission device, a multi-stage transmission mechanism, a lower mounting seat, a cable transmission mechanism and an oil pump. The application has the characteristics of reasonable and simple structure, low production cost, convenient installation and complete functions. By arranging multiple transmission locking devices, the separate work or cooperative work of multiple oil pumps can be realized without additionally arranging multiple sets of driving sources or complex gear shifting mechanisms, the number of transmission components is reduced, the probability of failure is reduced, the installation process is simplified, and the manufacturing cost is saved. The application is provided with a transmission compensation mechanism. When the rotating seat rotates alone and no power is input, the transmission compensation mechanism can offset the acting force through reverse gear driving, avoids the misstart of the oil pump, prevents energy waste, and improves transmission accuracy. When power is input, the oil pump can be normally driven to work, effectively solving the problem of power transmission disorder when the rotating seat rotates.

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.