586 results about "Weak current" patented technology

The invention relates to a weak current equipment abnormity judgment method and system based on the Internet of Things. The method comprises the steps that multi-dimensional parameters such as temperature, current, voltage and vibration frequency are collected through nodes of the Internet of Things, and a dynamic tracking identifier is generated; performing dynamic parameter association analysis on edge nodes, and establishing a real-time coupling degree relationship between parameters; according to the analysis result, evaluating the abnormity level in a grading manner, and distinguishing the primary abnormity of single parameter deviation and the advanced abnormity of multi-parameter collaborative deviation; the cloud platform starts a differential verification mechanism for different levels of anomalies, primary anomalies are transversely compared, and advanced anomalies execute full-life-cycle backtracking verification; the system comprises a data acquisition module, an edge calculation module, an analysis and evaluation module and a cloud analysis platform, and can realize the method. According to the invention, through dynamic coupling degree analysis and a hierarchical verification mechanism, the abnormality judgment accuracy is remarkably improved, and false alarms caused by environmental interference are effectively reduced.

The invention relates to the technical field of weak current intelligent terminal control, in particular to a hierarchical response management control system for a weak current intelligent terminal. The system comprises a state sensing module, a prediction optimization module, a task scheduling module, a fusing control module and an execution feedback module. The state sensing module collects a power supply state, task information and environmental parameters, and constructs a multi-dimensional operation scene model; the prediction optimization module adopts an exponential weighted moving average algorithm to predict a task peak value, and judges a key event probability through an index mutation rule; the task scheduling module generates a hierarchical response sequence and a power supply strategy based on a reinforcement learning algorithm; the fusing control module executes task delay, edge autonomy and key task guarantee mechanisms when resources are abnormal or communication is interrupted; and the execution feedback module collects an operation result and updates the model to realize scheduling closed-loop optimization. According to the invention, the response efficiency and operation toughness of the weak current system in a complex scene are improved.

The invention discloses an intelligent control system and method for weak current equipment based on the Internet of Things, and relates to the technical field of weak current equipment control. Intelligent selection and switching of a main path are realized through topology modeling, path scoring, health feature analysis and supervised learning training and construction of a path health scoring function; the system can continuously monitor node states, identify abnormal nodes and carry out dynamic path replacement, and control continuity is guaranteed; and if path switching fails, fault root causes are automatically traced, high-risk nodes are isolated, and an operation and maintenance platform is linked to intervene in processing, so that the adaptivity, the self-healing capability and the engineering operation and maintenance efficiency of the weak current control system are remarkably improved.

The invention provides a rail transit weak current system operation and maintenance management method. The method comprises the following steps: S1, data acquisition and preprocessing; s2, fault probability and residual service life (RUL) prediction based on an LSTM / Transform + attention mechanism; s3, fault propagation analysis and root positioning based on a graph neural network (GNN); and S4, operation and maintenance decision optimization based on reinforcement learning. According to the invention, through fusion of deep learning, a graph neural network and a reinforcement learning algorithm, a full-process and closed-loop rail transit weak current system operation and maintenance management system is constructed.

The invention relates to a real-time data encryption transmission method and a real-time data encryption transmission device for a weak current remote monitoring system, in particular to the field of weak current remote monitoring systems, and effectively avoids the problem of update failure caused by link fluctuation in a dynamic network environment by intelligently predicting a stable state of a network to accurately trigger key update. A lightweight distributed consensus mechanism is adopted to generate a security key block, so that the communication overhead is remarkably reduced while the Byzantine fault-tolerant capability is guaranteed; a precise distribution strategy based on topological difference identification greatly reduces redundant transmission, and efficient delivery of keys is realized; the innovative chain verification and zero knowledge synchronization mechanism ensures that the offline node safely recovers the key state, and the overall scheme significantly optimizes the transmission efficiency and the resource utilization rate while improving the system security, and is especially suitable for large-scale and high-dynamic Internet of Things monitoring scenes.

A power transmission tower grounding resistance intelligent measurement method based on ground potential field distributed sensing comprises the steps that a ground potential sensing network is arranged around a power transmission tower grounding device, and a ground potential field distributed measurement system with an iron tower as the center is established; a broadband characteristic coding current signal is injected into the grounding system through a weak current injection module; acquiring potential response data of each node of the ground potential sensing network excited by the feature coding current signal by adopting a distributed synchronous acquisition technology, and reconstructing complete ground potential field spatial distribution from sparse node observation data based on a compressed sensing theory through a signal reconstruction algorithm; and inputting the reconstructed complete ground potential field spatial distribution map into a pre-trained map neural network model, and outputting an intelligent identification result and an anomaly diagnosis conclusion of the ground resistance. According to the invention, non-contact, distributed and high-precision grounding resistance measurement under the condition that a grounding lead does not need to be disconnected is realized, and the measurement precision and reliability under a complex working condition are remarkably improved.

The embodiment of the invention provides a gallium nitride totem-pole circuit and a control evaluation system of the gallium nitride totem-pole circuit, and the circuit comprises a gallium nitride power device which comprises an integrated semiconductor tube and an integrated drive circuit; the isolation chip is connected between the control module and an integrated driving circuit of the gallium nitride power device and is used for sending the pulse width modulation signal sent by the control module to the integrated driving circuit, and the isolation chip can ensure the electrical safety of weak current and strong current; the gallium nitride power device is used for controlling the on-off state of the integrated semiconductor tube through the integrated driving circuit according to the pulse width modulation signal sent by the isolation chip; under the condition that the integrated semiconductor tube is conducted, the voltage is output to the control module based on the bus voltage through the integrated semiconductor tube, and the driving circuit is integrated on the gallium nitride power device, so that the circuit design can be simplified, overcurrent protection and undervoltage protection are simultaneously carried out, and the safety of the gallium nitride totem pole circuit is improved.

The invention relates to the technical field of intelligent industry, and discloses a visual communication system based on weak current engineering and an operation method thereof, and the system comprises a multi-mode signal collection module, an intelligent data processing module, a dual-channel communication transmission module, an interactive visualization module and an autonomous control system module. The method comprises the following steps: synchronously acquiring video, audio and environmental parameters through a distributed sensor array; eliminating multi-source signal deviation by adopting a space-time alignment algorithm; feature fusion and quality evaluation are realized based on a deep neural network; dynamically selecting a wired and wireless hybrid transmission mode; an AR enhanced visual human-computer interface is constructed; and implementing a fault self-diagnosis and fault-tolerant recovery mechanism. According to the invention, the bit error rate of the communication system is reduced, the continuity and reliability of the communication process are ensured, and the man-machine interaction efficiency and the emergency response speed are improved.

The invention belongs to the field of power equipment monitoring, and discloses a lightning arrester on-line monitoring system and method based on non-contact differential electric field probe self-adaptive compensation, a non-contact differential voltage probe is adopted, the sensitivity to environmental noise and interference to other-phase high-voltage buses is remarkably reduced through differential measurement, and the monitoring accuracy is improved. And the self-adaptive compensation algorithm is combined, so that the measured signal can be corrected in real time according to the on-site electromagnetic environment change, the amplitude and phase distortion can be effectively inhibited, the accuracy and reliability of the high-voltage side bus voltage acquisition can be improved, and the overall monitoring precision can be obviously improved. According to the invention, high-sensitivity and wide-dynamic-range measurement of lightning arrester current is realized by adopting the fluxgate weak current sensor, accurate detection under small signals is guaranteed, and fine analysis of harmonic components is facilitated.

The utility model discloses an electromagnetic compatibility assessment device, and belongs to the technical field of wireless communication. The equipment comprises a data processing module, a signal generator module, a low-frequency / high-frequency amplifier, a combining unit, a shielding frame and a power supply module, and accurate evaluation of the electromagnetic compatibility of the weak current equipment is realized through modular design. The signal generator module adopts a multi-band vector signal generator to generate configurable interference signals; the low-frequency amplifier and the high-frequency amplifier respectively adopt independent high-precision amplification circuits; and the combining unit couples the two paths of signals into a composite interference signal and outputs the composite interference signal. The shielding frame is made of double-layer aluminum magnesium alloy and is combined with a metal machine frame to form a composite shielding system. And the data processing module regulates and controls parameters in real time through the touch screen, analyzes response data of the tested equipment based on an FFT algorithm, and generates a visual evaluation report.

The invention relates to the technical field of network resource management, and discloses an intelligent building weak current equipment multi-protocol compatible method and system, and a storage medium. The method comprises the steps of collecting multi-protocol network data streams, extracting data packet lengths and arrival interval time as classification features, dividing network data packets into three data packet groups of short and small high frequency, medium stability and large flow, and forming a real-time response network sequence through a priority queue scheduling mechanism and preferentially transmitting the short and small high frequency groups, the method comprises the steps of receiving a real-time response sequence, calculating residual bandwidth to adjust a network buffer area, packaging and splitting a large-flow data packet group to generate transmission sub-blocks, merging the real-time response sequence and the transmission sub-blocks through a merging rule, dividing the merged real-time response sequence and the transmission sub-blocks into a plurality of data stream segments, and distributing a transmission path for each data stream segment. And monitoring bandwidth occupation and transmission delay of each transmission path, and dynamically adjusting path distribution of the data stream segments. According to the invention, the utilization efficiency of network resources and the real-time performance of data transmission in a multi-protocol environment are improved.

The invention provides a signal processing system of a PET-CT (positron emission tomography-computed tomography) detector and the PET-CT detector. The signal processing system comprises a front-end analog processing module and a time-energy dual-path module, the front-end analog processing module is connected with a weight resistance network of the PET-CT detector and comprises a main channel and an auxiliary channel, the main channel is used for amplifying weak current signals, and the auxiliary channel is used for compensating common-mode noise; and the time-energy dual-path module is connected with the front-end analog processing module and an ADC circuit control chip of the PET-CT detector, and is used for separating a signal timestamp and energy information, respectively carrying out parallel processing in a time path and an energy path, and inhibiting crosstalk between the paths. Compared with a traditional single channel, the noise density is effectively reduced, and inter-path crosstalk can be suppressed.

The invention provides an alternating-current weak current high-precision detection system and method, and the system comprises a copper-nickel alloy shielding cover which is used for inhibiting space power frequency radiation interference and power system broadband noise, and a magnetic sensitive element which is used for converting the detected magnetic field change into a corresponding initial current signal, the trans-impedance amplifier is used for converting the initial current signal into a voltage signal; the adaptive noise suppression module collects a power frequency fundamental wave reference signal and a harmonic wave reference signal, generates a harmonic wave anti-phase counteracting signal, and performs anti-phase counteracting on real noise of the initial current signal; the analog-to-digital converter is used for converting the voltage signal into a discretized digital signal, and the discretized digital signal comprises a target signal and a random noise signal; and the FPGA coherent demodulation module is used for carrying out cross-correlation operation and narrow-band filtering on the target signal and the random noise signal to separate out a micro-current signal. The technical problems that in the prior art, composite noise covering is limited, the frequency fluctuation adaptability is poor, and microvolt-level signals are difficult to capture are solved.

The invention discloses an operation monitoring method and system for an intelligent weak current system, and the method comprises the steps: receiving key electrical parameters, collected by a data collection device in real time, of each target device in the intelligent weak current system, and obtaining a key electrical parameter set; performing feature extraction on each parameter of the key electrical parameter set to obtain an extracted key electrical parameter feature set; the key electrical parameter feature set comprises a current feature, a voltage feature, a temperature feature, a sound parameter feature and a vibration analysis parameter feature; screening suspicious fault features from the key electrical parameter feature set by combining an ant colony algorithm and a simulated annealing algorithm; performing feature fusion on the screened suspicious fault features to obtain fused suspicious fault features; and analyzing the fused suspicious fault features through a trained deep learning model to obtain a fault occurrence type of the intelligent weak current system. According to the invention, the fault detection accuracy of the intelligent weak current system can be improved.

The invention discloses a machine tool feeding system fault diagnosis method based on multi-level current characteristic distillation. The method comprises the following steps: collecting vibration and current time domain signals and respectively converting the vibration and current time domain signals into two-dimensional time-frequency diagrams; training a source model by using the vibration time-frequency diagram; cloning and freezing a source model, constructing a target model with the same structure, inputting the current time-frequency diagrams into the source model and the target model at the same time, and optimizing the target model through combination of multi-level feature distillation and a multi-target loss function; and finally, fault diagnosis based on the current signal is realized by using the optimized target model. According to the method, source domain data does not need to participate in training, knowledge migration from a vibration mode to a current mode is realized, the problems of weak current signal fault features and scarcity of labeled samples are effectively overcome, and the fault diagnosis precision and cross-working-condition adaptive capacity under the small sample condition are improved.

The utility model relates to a miniature current transformer, which comprises a shell and a coil arranged in the shell, the coil comprises an iron core and a secondary winding wound on the surface of the nanocrystalline iron core, and the iron core is manufactured by performing heat treatment on nanocrystalline materials in a magnetic field; the shell is provided with a center channel which is arranged in a penetrating mode, a primary side wire can penetrate through the center channel, and the number of penetrating turns of the primary side wire is one. The miniature current transformer can realize output current at the secondary side when muA-level small current is input, fills the blank of a traditional transformer in the field of low-current measurement, improves the monitoring capability of a power system on a small current signal, is helpful for more accurately mastering the change condition of weak current in the power system, and improves the measurement accuracy. Accurate data support can be provided for electric leakage monitoring of some precise electronic equipment, current detection of a low-power-consumption circuit and the like, so that the safety and the reliability of a power system are improved.

The invention discloses a weak current adaptive wiring path planning method and device and a storage medium, and relates to the technical field of data processing. The method comprises the following steps: constructing a wiring space world coordinate system; constructing a first weak current wiring limitation area coordinate; defining coordinates of a second weak current wiring limitation area through the user side; a union set is taken, and coordinates of the weak current wiring limitation area are obtained; obtaining a weak current wiring starting point coordinate and a weak current wiring terminal point coordinate, and carrying out wiring optimization based on the weak current wiring limiting area coordinate to obtain a weak current wiring scheme; and performing virtual layout on the weak current wiring scheme in the wiring three-dimensional space model to obtain a wiring three-dimensional space updating model, and sending the wiring three-dimensional space updating model to a user side for visual display. The technical problem that in the prior art, the wiring planning efficiency is low due to the fact that the weak current wiring path planning process is prone to being interfered by strong current wiring is solved, wiring optimization is conducted by constructing the weak current wiring limiting area and combining the three-dimensional space model, and the technical effect of improving the wiring planning efficiency is achieved.

The invention discloses an intelligent operation and maintenance platform and an operation and maintenance method for an intelligent building weak current well, and relates to the technical field of intelligent building weak current wells, the intelligent operation and maintenance platform comprises an operation and maintenance platform module and a mobile terminal module, the operation and maintenance platform module is electrically connected with an application module and an equipment module, and the output end of the application module is electrically connected with a background management module. According to the intelligent operation and maintenance platform for the weak current well of the intelligent building and the operation and maintenance method thereof, various environmental indexes including temperature, humidity, smoke sensing and the like in the weak current well can be monitored in real time, and it is ensured that operation and maintenance personnel can master the latest state of the weak current well at any time; when the environmental indexes in the weak current well are abnormal, the platform can automatically control the fan or the air conditioner to start cooling and dehumidification, and after the environmental indexes are normal, the platform automatically controls the fan or the air conditioner to stop; the platform utilizes a big data analysis technology to carry out deep mining and analysis on the collected data, and provides intelligent functions of trend prediction, troubleshooting and the like.

The invention relates to the technical field of energy-saving control systems, in particular to an air conditioner energy-saving control system based on environmental perception. According to the technical scheme, the system comprises an environment sensing module, a central control module, an execution mechanism and a strong and weak current integrated platform. Environmental factors are sensed in real time through the multi-parameter sensor network, and the optimization weight of each parameter is dynamically adjusted in combination with a dynamic optimization algorithm, so that the system can be matched with the operation power of the air conditioning system and the actual load requirement, the building energy consumption is reduced, and the energy cost is saved; meanwhile, an edge computing architecture is adopted to achieve rapid analysis and decision making of environmental parameters, the response speed of the system is increased, in addition, the continuity and stability of system operation are guaranteed through a fault self-healing mechanism, the adaptability of the system to different environments and use requirements is improved through a genetic algorithm, and the system reliability is improved. And the strong and weak current integrated platform reduces wiring complexity and system cost, can be integrated with an existing building automatic control system, and reduces reconstruction difficulty and cost.

The invention discloses a movable electric power track device which comprises a plug, a support body and an electric power track. The support body comprises a base and a vertical shell. The shell is divided into a strong current area and a weak current area. The power track is correspondingly divided into a strong current track and a weak current track, the strong current track is arranged in a strong current area and is in sliding connection with one or more track socket modules, and the weak current track is arranged in a weak current area and is in magnetic connection with one or more magnetic low-voltage function modules. The device solves the problems that a traditional power distribution device is poor in mobility, single in function, large in potential safety hazard and insufficient in expansibility, the device can be integrally moved, strong and weak electricity physical and electrical isolation is achieved, strong and weak electricity power supply is integrated, modules can be flexibly adjusted, safe, flexible and efficient electricity utilization experience is achieved, and the device is suitable for multiple scenes such as families and offices.

This invention discloses a harmonic suppression control method for a resonant-cascaded active disturbance rejection permanent magnet linear motor (PMLM) based on a positioning force model, belonging to the field of PMLM control technology. Addressing the problems of incomplete periodic harmonic suppression, poor robustness to unknown disturbances, and insufficient synergy between resonance and active disturbance rejection, this invention embeds the positioning force model into the state-space equation of the active disturbance rejection controller and embeds the resonant controller into the second-stage observation channel of a two-stage extended state observer, constructing a three-layer collaborative architecture of model feedforward compensation, resonant frequency selection suppression, and extended state observer broadband estimation. The positioning force model actively compensates for known harmonic disturbances, the embedded resonant controller accurately suppresses residual periodic components, and the extended state observer compensates for nonlinear and aperiodic disturbances in real time. This invention achieves full-link collaborative suppression of positioning force harmonics, inductor asymmetry harmonics, and unknown disturbances in PMLMs under low-speed, high-speed, and variable-speed conditions, significantly reducing current harmonics and improving system stability and control accuracy. Simulation results show that this control method can achieve high-precision servo control of PMLMs.

The utility model discloses a bridge structure of an indoor weak current engineering comprehensive wiring system, which is characterized in that when a supporting and fixing mechanism is installed, only the installation positions of suspenders need to be roughly determined, and after the two suspenders are installed, the lower ends of the two suspenders and a combination body provided with two hanging frames and a supporting cross beam are connected through connecting pieces. The lifting frame is locked through the first locking piece, the lifting rod does not need to be accurately installed in the process, and the effect of improving the installation efficiency is achieved; in the installation process of the supporting and fixing mechanisms, the situation that the length direction of the installation cross beam is not perpendicular to the length direction of the groove type bridge frame main body occurs, and at the moment, when the groove type bridge frame main body is laid on the multiple supporting and fixing mechanisms, through the positions of a sliding seat, a limiting seat and a second locking piece, the groove type bridge frame main body is fixed; the limiting seats on the sliding seats abut against the two sides of the groove type bridge frame body for supporting and limiting, the sliding seats are fixed through the second locking pieces, and the effect of improving the fixing effect on the groove type bridge frame body is achieved.

The utility model relates to the field of weak current engineering line protection, in particular to a weak current engineering line protection device which comprises a bottom table and a protection shell, through holes are symmetrically formed in the left side and the right side of the upper end face of the bottom table, n-shaped seats are installed in the through holes in a sliding fit mode, and adjusting screw rods are installed at the bottoms in the n-shaped seats. A plurality of first sliding blocks are installed at the bottom in the n-shaped base in a sliding fit mode, protective shells are installed at the bottoms of the first sliding blocks, a right groove is formed in the right side end face in the n-shaped base, a first lead screw is installed at the bottom in the right groove, a second sliding block is installed on the upper end face of the first lead screw, and a pressing plate is installed on the left side end face of the second sliding block. According to the utility model, the adjusting screw rod and the first sliding block structure are adopted, so that the vertical height and the left-right position of the protection shell can be adjusted, weak current lines of different specifications can be protected conveniently, and the use convenience of the device is improved.

The utility model provides a kind of wireless power supply device, including rear mounting assembly, including rear shell, and first conductive structure being arranged in rear shell, it includes first PCB board, first insulating part and first coil arranged in sequence, wherein, first PCB board is located at rear shell bottom wall and contact with it, wiring component is further provided on rear shell, one end of wiring component is connected with first PCB board, and the other end of wiring component is communicated with power supply;Front mounting assembly, including front shell, front shell is detachably connected with rear shell, second conductive structure is provided in front shell, and second conductive structure includes second PCB board, second insulating part and second coil arranged in sequence, wherein, second PCB board is located at front shell bottom wall and contact with it;Solved the installation difficulty, contact problem and easy damage problem of existing technology when 4 inch central control screen is connected with power supply between strong current and weak current module using pin row seat or FPC soft cable.

The utility model provides an integrated heating control system of a vulcanizing machine, and relates to the technical field of vulcanizing machines, the vulcanizing machine comprises a heating module used for heating a vulcanizing medium, and the heating module comprises a circuit board; a control module; the weak current master control module is arranged on the circuit board, and the input end of the weak current master control module is connected with the output end of the control module; the strong current controlled module is arranged on the circuit board, the input end of the strong current controlled module is electrically connected with the output end of the weak current master control module, the output end of the strong current controlled module is connected with the heating module, and the strong current controlled module is used for controlling the heating module to heat the vulcanizing medium according to an output signal of the weak current master control module; wherein the weak current master control module is configured to control the strong current controlled module according to a control signal output by the control module. The weak current master control module and the strong current controlled module are integrated on the circuit board, so that the circuit is simplified, and the space occupied by the heating control circuit in the vulcanizing machine electric cabinet is saved.

A fixing device for installation of a weak current engineering line pipe comprises a base, an expansion screw is arranged in the base, a detachable limiting ring is arranged at the top of the base, a locking assembly is arranged on the outer side of the bottom of the limiting ring and comprises two connecting blocks, and the two connecting blocks are symmetrically arranged front and back with the center line of the base as the symmetry axis. The inner side of the connecting block is connected with the base, the connecting block is internally provided with a limiting plate, the inner side of the limiting plate is provided with a cylindrical rod, and the cylindrical rod penetrates through the base and is connected with a limiting ring, so that the problem that an existing weak current engineering line pipe fixing mode and device lacks flexibility and universality when being adapted to different wall materials is effectively solved; the problems that construction efficiency is low, fixing stability is poor, metal wall face characteristics are not fully utilized, and the rapid, efficient and safe construction requirements of modern weak current engineering cannot be met are solved.

The application provides an evaporator support assembly and an air conditioner, and relates to the technical field of air conditioners, and is designed to solve the problem of unreasonable cable arrangement. The evaporator support assembly comprises a connecting support and a temperature control probe, the connecting support is provided with an air inlet configured to allow airflow passing through the evaporator to enter, and the temperature control probe is installed on the connecting support and located at the left side of the air inlet of the connecting support in the air inlet direction. The evaporator support assembly provided by the application can reduce electromagnetic interference between strong current and weak current, reduce the length of the cable, save the manufacturing cost of the air conditioner, save the wire slot required by the cable between the temperature control probe and the electric control box, and reduce the damage to the structural strength of the evaporator support assembly. In addition, the wind speed can be measured faster, so as to improve the measurement accuracy.

The utility model relates to the technical field of weak current boxes, and particularly discloses a wire distribution box protective cover, which comprises a distribution box, an overvoltage switch and a protective cover, a through hole is formed in the middle of the protective cover, chutes are formed in the top and the bottom of the inner wall of the through hole, a U-shaped frame is embedded and slidably mounted in the through hole, and a trigger rod is hinged and mounted in the U-shaped frame through a shaft pin. One end of the trigger rod is provided with an insulating rod used for shifting the overvoltage switch, the other end of the trigger rod is hinged to an outer rod, and the bottom of the outer rod is rotatably provided with an abutting block through a rotating shaft. According to the technical scheme of the utility model, the slidable trigger rod is arranged on the surface of the protective cover, any overvoltage switch in the distribution box is switched on through the protective cover by using the lever principle, the risk of electric spark injury caused by manual switching on is avoided, and the outer rod can be rotated and folded when not in use. Mistaken touch caused by overlong extension of the outer rod is avoided, and the attractiveness is prevented from being influenced.

The utility model relates to cable laying technical field, and disclose a weak current engineering cable pay-off mechanism, including mobile frame, the upper surface of mobile frame is provided with bracing frame and fixed frame respectively, and the surface of bracing frame is provided with winding roller, the surface of fixed frame is provided with guide pipe, and the inner chamber of guide pipe has reserved the cavity that cable passes through. The utility model, when needing to pay off cable, first motor is used to drive driving roll rotation, and the clamping drive effect of driving roll and supporting roll can drive cable to slide in the inside guide pipe, realize the purpose of paying off cable, and when paying off, can control electric push rod telescopic drive rack movement according to external environment, based on rack and pinion engagement, can drive the deflection of axle rod, adjust the angle of guide pipe, thereby can adjust the height of cable paying off according to external environment, facilitate to avoid external object, reduce the attrition between cable and external article in the process of paying off.

The invention belongs to the field of electric digital data processing, and discloses an intelligent power supply protection control method for a weak current cabinet, which comprises the following steps of: executing instantaneous power supply interruption and recovery operation with limited time length on multiple ports according to a determined sequence so as to carry out sequenced probe scanning, the time length being smaller than the power-down holding time length of a load power supply; the total current is monitored in parallel to identify abnormity, and when abnormity is identified, sequential scanning is interrupted and focusing probe scanning is triggered; according to the method, the controlled port switching action is combined with synchronous sampling of a single total current sensor, the problem of port-level discrete information acquisition depending on multiple physical sensors in the past is solved, and the time duration of the operation is dynamically determined according to environmental parameters before interruption recovery operation each time. The problem is converted into a time sequence data processing problem based on a single information source, and a real-time power consumption data set covering all ports is constructed under the condition that the hardware cost is not increased.