104 results about "Line switching" patented technology

The container conveying device and conveying line switching device comprises two conveying rails which are arranged in parallel, the height difference is formed between the two ends of each conveying rail, the two ends of each conveying rail are in transition connection through a connecting section, and a conveying gap is formed between the two conveying rails; the flanges protruding out of the necks of the bottle bodies are supported on the conveying track, the bottle bodies are located at the conveying gap, and the bottle bodies are conveyed in a height lowering mode along the track of the conveying track; according to the device, the flanging part of the bottle body is ingeniously utilized, and the conveying inclination angle of the conveying track can be changed at will according to needs, so that the conveyed bottle body does not topple due to the change of the conveying angle (height and linear-to-arc track); according to the bottle body lifting device, only the conveying track with the proper inclination angle and the conveying gap with the proper width need to be selected, the height of the bottle body is effectively reduced, and the production cost is reduced.

The application relates to the technical field of automobile steel plate longitudinal cutting processing equipment, and particularly discloses an inner-outer plate passage line switching processing device, which comprises a base, a plate conveying passage, a plurality of inner plate guide rollers, outer plate guide rollers and a top extension mechanism, the plate conveying passage is arranged on the upper surface of the base, the inner plate guide rollers are rotationally assembled in the conveying passage in parallel at equal intervals along the plate conveying direction and are arranged in parallel with the inner plate guide rollers, and the top extension mechanism is assembled on the side of the output end of the base and has two working states of contraction and extension. The device realizes differential switching of the inner-outer plate plate conveying paths, when the top extension mechanism is contracted, the inner plate is conveyed by relying on the inner plate guide rollers; when the top extension mechanism is extended, the outer plate can be lifted to be separated from the inner plate guide rollers, and the output is completed only by the outer plate guide rollers. The device avoids the outer plate scratch defect caused by the residual impurities in the inner plate processing, eliminates the surface quality hidden danger of the plate, simplifies the inner-outer plate changing process in the production line and guarantees the high-precision surface processing quality of the automobile outer plate.

The invention provides a heat exchanger on-line switching system in an acid making process, which relates to the technical field of sulfuric acid preparation and comprises two sets of plate heat exchangers, two sets of differential pressure trigger components, a three-way valve, a valve core component, two sets of check valves and two sets of cooling components, the differential pressure trigger assembly comprises a power connection part and two deflection parts which are located on the outlet sides of the heat exchangers and deflect reversely under pressure, two outlets of the three-way valve are connected with the inlet sides of the two heat exchangers respectively, the valve element assembly comprises a horizontally-moving valve rod and a motor provided with a power receiving part, the valve rod is provided with a locking part, an inlet of the check valve is connected with an outlet of the three-way valve, and the opening and closing part is in linkage with the motor. When the pressure difference of the inlet and the outlet of a certain heat exchanger exceeds the limit and the driver is powered on to drive the valve rod to the first preset position, the corresponding check valve is fully opened, and when the driver is driven to the third preset position, the check valve is fully closed, and meanwhile the motor is powered off. Automatic, rapid and reliable online switching of the plate heat exchanger is achieved by integrating mechanisms such as differential pressure triggering, mechanical transmission and electric control.

The invention relates to monitoring equipment and a monitoring method for a power equipment monitoring scene, and belongs to the technical field of power monitoring. The monitoring equipment for the power equipment monitoring scene comprises a plurality of cross-core shells, insulated copper wires are arranged in the cross-core shells, the ends of the insulated copper wires are fixedly connected with connecting ends, and the two connecting ends are installed on the surfaces of the cross-core shells; the monitoring switching mechanism is arranged among the plurality of core penetrating shells; a dynamic monitoring strategy is implemented on the basis of line load characteristics of different power utilization scenes in a power-on operation state of a power system, and when the system is powered off to switch lines, the monitoring system can automatically and synchronously switch to a monitoring mode of a new line, so that the continuity and integrity of monitoring data in a line switching process are ensured, and the monitoring efficiency is improved. Therefore, the full-period monitoring effectiveness of the power line is guaranteed, and the monitoring effect of the power line is guaranteed.

The application discloses a communication base station power supply voltage control energy-saving system and method based on communication load. The system comprises a cloud platform, an energy storage battery, a line switching unit, a voltage control unit, and a commercial power grid. The commercial power grid supplies power to the energy storage battery and an antenna in the communication base station through the voltage control unit, and the energy storage battery supplies power to the antenna through the voltage control unit. The line switching unit is used for controlling the on-off of the line. The cloud platform is in communication connection with a control system in the communication base station, and the control system in the communication base station is in control connection with the line switching unit and the voltage control unit. In the method, the cloud platform obtains communication base station load data and antenna load typical power data through the control system, calculates the data and transmits the calculation results to the control system, and the control system controls the line switching unit and the voltage control unit to work based on the calculation results. The application can realize low-carbon energy-saving operation of the communication base station and reduce the operation cost.

The utility model discloses an electric power distribution line switching device, which belongs to the technical field of electrical connection, and comprises a lower switching box and an upper switching box, the middle parts of the inner cavities of the lower switching box and the upper switching box are fixedly sleeved with silica gel insulation clamping blocks, the two silica gel insulation clamping blocks are provided with inner arc-shaped grooves, and the inner arc-shaped grooves are provided with inner arc-shaped grooves. The bottom surface of the upper switching box is attached to the top surface of the lower switching box, and one end of an inner cavity of the lower switching box and one end of an inner cavity of the upper switching box are sleeved with first electric wires. According to the utility model, after the first electric wire and the second electric wire are connected, the lower switching box and the upper switching box are sleeved on the outer side of the joint of the first electric wire and the second electric wire, and the joint of the first electric wire and the second electric wire is extruded and fixed in the inner arc-shaped grooves on the two silica gel insulation clamping blocks; and the clamping hooks on the two sides of the upper transfer box are clamped into the U-shaped clamping seats on the two sides of the lower transfer box, so that the lower transfer box and the upper transfer box are conveniently fixed, and the practicability is good.

The invention provides a power distribution network recovery method and device for coping with man-in-the-middle attack, and the method comprises the steps: inputting a state parameter of a target power distribution network and a man-in-the-middle attack parameter into a first fault recovery model when the target power distribution network is subjected to the man-in-the-middle attack; based on the state parameter of the target power distribution network, the man-in-the-middle attack parameter, and a target function, a communication network recovery constraint, a physical system recovery constraint, a communication and physical coupling constraint and a man-in-the-middle attack influence constraint of a first fault recovery model, solving to obtain a first fault recovery strategy of the target power distribution network; the first fault recovery strategy comprises a line switching sequence, a load recovery plan and a communication link recovery sequence of the target power distribution network; and based on the first fault recovery strategy of the target power distribution network, recovering the target power distribution network. In this way, the fault recovery strategy is optimized by comprehensively considering the coupling relation between the communication network and the physical system and the man-in-the-middle attack influence, and the fault recovery efficiency of the power distribution network when the power distribution network is subjected to the man-in-the-middle attack can be improved.

The application discloses a hybrid MMC control method and system, which comprises the following steps: under the working conditions of voltage reduction / half voltage operation of a converter station, on-line switching of a single valve group and DC fault ride-through, a control pulse is formulated according to a converter voltage reference value formulated by capacitor voltage of a sub-module in an MMC converter valve, an arm current loop injection voltage value formulated by a time-varying value of an arm current loop and a DC voltage given value formulated by a DC current given value, and the hybrid MMC is controlled to be put into operation. According to the converter voltage reference value formulated by the capacitor voltage of the sub-module in the MMC converter valve, the hybrid MMC can ensure that the MMC arm current zero-crossing point is guaranteed, capacitor voltage balance is realized and system collapse caused by separation of capacitor voltage of a full-bridge sub-module and the capacitor voltage of the sub-module is avoided under special working conditions. The time-varying value formulated by the arm current loop of the MMC converter valve obtains an expected value of the arm current loop injection, and the arm current always has a zero-crossing point through an arm current loop injection link, so that the safe operation of the MMC arm is ensured.

The application discloses an online switching method of a roller coating unit, which comprises the following steps: when the first roller coating machine is connected with a steel wire and the second roller coating machine is disconnected with the steel wire at the same time, the first supporting roller and the second supporting roller are arranged at the rising position, and the third supporting roller is arranged at the falling position; or when the second roller coating machine is connected with the steel wire and the first roller coating machine is disconnected with the steel wire at the same time, the first supporting roller is kept at the rising position, and the second supporting roller and the third supporting roller are adjusted at corresponding positions according to actual conditions on the spot, so as to change the position of the steel wire and ensure that the running steel belt does not affect the connection and disconnection of the first roller coating machine or the second roller coating machine, thereby realizing online replacement of the roller coating machine without stopping the steel wire, ensuring continuous and normal annealing treatment of the steel belt in the previous process, ensuring that the coating of the steel belt is not scraped, preventing the steel belt from being accumulated in the coating work station of the roller coating unit, ensuring the quality of the steel belt product, and improving the overall operation efficiency.

This invention discloses a connector, including a female connector and a male connector, which are plugged into each other. The male connector has a switch assembly, and the female connector has a latch, which is movably connected to the female connector. The switch assembly has an unlocked position and a locked position. When the latch is in the unlocked position, the connector's connection is disconnected. When the latch is pressed to the locked position, it abuts against the locking position and triggers the switch assembly, switching the connector's connection to a conductive state. Through the mechanical linkage between the switch assembly and the latch, the connector is ensured to be plugged in and unplugged only when the power is off, eliminating arcing under load and avoiding contact burns and overheating risks. Simultaneously, an integrated fuse assembly can quickly disconnect the faulty branch when a short circuit occurs in the lighting fixture, preventing the fault from affecting other equipment on the same circuit, effectively improving system safety and reliability.

This invention provides an axial conversion device for a multi-axis accelerometer sensor, belonging to the field of precision instrument testing. The device includes a sensor under test, a signal analyzer, and a housing. A first cable holder is located at one end of the housing, and a second cable holder is located at the other end. The first cable holder has multiple input terminals, which are electrically connected to multiple output terminals of the sensor under test. The second cable holder is electrically connected to the input terminal of the signal analyzer. An axial adjustment module is located inside the housing. The axial adjustment module includes a line switching device, output contacts, and multiple input contacts. The multiple input contacts are electrically connected to the multiple input terminals of the first cable holder, and the output contacts are electrically connected to the second cable holder. The axial conversion device for a multi-axis accelerometer sensor provided by this invention can solve the problems of low continuity and low safety in the prior art.

This application discloses a circuit breaker and a power distribution system, comprising a housing and a main line switching component and a circuit board assembly disposed within the housing; the circuit board assembly includes a cover opening detection circuit and a controller, the cover opening detection circuit being connected to a pin of the controller; the cover opening detection circuit has a mechanical switch; a portion of the mechanical switch extends through the housing for triggering by an external cover; the mechanical switch includes a first state and a second state, the first state being triggered by the cover and the second state being not triggered by the cover; when the mechanical switch is in the second state or transitions from the first state to the second state, the controller generates a cover opening signal; this application features cover opening detection.

The invention relates to a control method (2000, 4000, 5000) for a compressed air supply system (1200) associated with a control device (1300), comprising the following steps: receiving (2100) a supply demand (BV) by means of the control device (1300); -actuating (2200) the compressed air supply (200) by means of the control device (1300) in order to provide compressed air (110) at the compressed air connection (1) when the control device (1300) receives the supply demand (BV); determining (2300) a frosting risk (RI) by means of the control device (1300) as a function of the operating state information (IB) and / or the environment information (IU) of the compressed air supply (200); actuating (2400) the main line switching valve (25) in the first operating mode (B1) by means of the control device (1300) in order to block the pneumatic main line (12) if the frosting risk (RI) falls below the predefined threshold value (W); in a first operating mode (B1), compressed air (141) is conducted (2500) via the branch line (14, 14.1, 14.2) in the inflation direction (B) towards the compressed air supply connection (2) for supply to the compressed air consumer (300). The invention also relates to a control device for carrying out the method and to a vehicle having the control device.

This invention discloses a startup circuit and startup method for an auxiliary power supply, relating to the field of power supply technology. The startup circuit includes a first charging line module, a second charging line module, a line control module, and a first capacitor. The first charging line module charges the first capacitor based on an input voltage source. When the voltage of the first capacitor is greater than or equal to a first preset voltage threshold, a control chip starts and drives a transformer to generate a line switching voltage at the first terminal of the second charging line module. The line control module interrupts the charging path of the first charging line module to the first capacitor when the line switching voltage is greater than or equal to a second preset voltage threshold, allowing the second charging line module to charge the first capacitor. The second charging line module charges the first capacitor based on the line switching voltage, ensuring that the voltage of the first capacitor is greater than or equal to a third preset voltage threshold. This invention reduces power loss in the startup circuit and improves power conversion efficiency.

The invention relates to the technical field of power distribution network line switching, in particular to a power distribution network transfer method based on an electric energy router, and the method comprises the steps: obtaining the operation state information of a main power supply, and carrying out the fault judgment according to the operation state information of the main power supply; if yes, determining a plurality of candidate standby power supplies; obtaining a target standby power supply from the plurality of candidate standby power supplies through a transfer model under the constraint of a power flow constraint condition, a system safety operation constraint condition, a network reconstruction constraint condition and an electric energy router constraint condition by taking the minimum line loss as a target; and indicating the power supply circuit to switch from the main power supply to the target standby power supply. According to the method provided by the invention, a better transfer scheme can be realized, a proper standby power supply is switched, the line loss is effectively reduced, the energy utilization efficiency is improved, the power supply cost is reduced, and the line selection is more flexible.

The application discloses a telephone line switching device and method, and relates to the technical field of telephone communication, and comprises the following steps: collecting the nominal maximum bandwidth and the actual used bandwidth of each line, obtaining line reference load data based on the nominal maximum bandwidth and the actual used bandwidth; obtaining the actual available bandwidth of the line, adjusting the line reference load data based on the actual available bandwidth, and obtaining line capacity data; obtaining individual sudden drop threshold values through a dynamic adaptive threshold model based on the line capacity data, and judging whether a multi-line synchronous bandwidth sudden drop event occurs based on the individual sudden drop threshold values; the application aims at the problem of bandwidth instantaneous sudden drop caused by the synchronous triggering of the heat protection mechanism of multiple lines in extreme environments such as high temperature, sets individual sudden drop threshold values, screens a bandwidth sudden drop line list, and quickly matches standby switching lines, so that fast response and switching in the multi-line synchronous sudden drop scene are realized, large-scale business interruption is avoided, and communication continuity is ensured.

The invention discloses a low-voltage power distribution network three-phase imbalance line change adjusting method, system and device and a medium, and relates to the technical field of low-voltage power distribution networks, and the method comprises the steps: obtaining the real-time power data of a three-phase circuit, and obtaining the three-phase imbalance degree based on the real-time power data; dynamically obtaining a judgment threshold value of a power grid balance state based on the historical operation data and the historical three-phase unbalance degree of the power distribution network; and comparing the real-time three-phase unbalance degree with a judgment threshold value to obtain a balance state judgment result of the power distribution network, and carrying out graded line change adjustment according to the balance state judgment result. According to the invention, an accurate basis is provided for the judgment of the three-phase imbalance state based on the judgment threshold value, so that an accurate adjustment demand is obtained, the adjustment precision is improved through graded wire change adjustment, and the problem of insufficient adjustment precision of a conventional three-phase imbalance adjustment technology is solved.

The utility model discloses a special assembly line wiring device compatible with detection of various electric energy meters, which comprises a plurality of connected wiring units, and each wiring unit comprises a linear conveying belt and an auxiliary wiring mechanism which are arranged on a rack; a tray is conveyed on the linear conveying belt and is used for placing an electric energy meter; the auxiliary wiring mechanism comprises two lifting frames arranged on the two sides of the linear conveying belt respectively, the lifting frames are driven by a lifting mechanism to ascend and descend, and a plurality of single-function wiring terminals and multifunctional wiring terminals corresponding to the trays are installed at different height positions on the lifting frames. The plurality of single-function wiring terminals and the multi-function wiring terminals are horizontally pushed to move through the pushing mechanism and are used for being connected with the electric energy meter, different wiring terminals can be switched on line to be connected with the corresponding electric energy meter through the movement of the lifting frame, manual replacement of the wiring terminals is avoided, and the working efficiency is improved.

The invention discloses an impedance matching system and method capable of switching a power line. The system is used for connecting a radio frequency power supply and a working interval. The system comprises a plurality of power lines, a matching device, a sensor and a controller. The matching device is connected between any power line and the working section and comprises a plurality of groups of preset impedance modulation modules, and each group corresponds to the impedance compensation section of one power line. The sensor is arranged between the radio frequency power supply and the matching device and is used for detecting current and voltage of the system. The controller is electrically connected with each component and can judge the matching state of the output impedance of the radio frequency power supply under the current power line and the load impedance of the working interval according to the data of the sensor; if the impedance is matched and within the adjusting range, the corresponding impedance adjusting module is adjusted; and if the power line exceeds the range, switching to the other power line. According to the invention, through the cooperative work of power line switching and the impedance modulation module, the impedance matching capability in a wider range and the matching capability under multiple loads are realized.

The utility model discloses a dual-power automatic change-over switch controller, which comprises a main control chip, a standing null line switching module, a frequently-used power supply acquisition module, a standby power supply acquisition module, an output module, a storage module and a user interface, the frequently-used power supply acquisition module comprises a first resistance voltage-dividing sampling circuit, the standby power supply acquisition module comprises a second resistance voltage-dividing sampling circuit, the standing zero line switching module comprises a first switching circuit and a second switching circuit, and the first resistance voltage-dividing sampling circuit is connected to the first switching circuit. The second resistance voltage division sampling circuit is connected to the second switching circuit, and the first switching circuit and the second switching circuit are connected to the main control chip. According to the dual-power-supply automatic change-over switch controller, zero line switching is carried out on the interior of the controller through the standing zero line switching module, and the problem that virtual voltage values are displayed on a display due to a common zero line of the controller can be effectively solved.

The invention relates to a communication line switching system, a communication line switching method, host equipment, slave equipment, an air conditioning unit and a storage medium. The system comprises the host equipment and the slave equipment; wherein the host equipment comprises a main control module, a first main communication module, a first standby communication module and a first switching module, the first main communication module, the first standby communication module and the first switching module are all connected with the main control module, and the main control module is used for controlling the first switching module so as to switch communication lines in the host equipment; the slave equipment comprises a slave control module, a second main communication module, a second standby communication module and a second switching module, the second main communication module, the second standby communication module and the second switching module are all connected with the slave control module, and the slave control module is used for controlling the second switching module so as to switch communication lines in the slave equipment. Therefore, the stability of a communication line between the host equipment and the slave equipment is improved, and the stability of the system is further improved.

The utility model provides a multiplexing control circuit for multi-bus signals and an image signal generator. The multiplexing control circuit comprises a controller, an output line switching module and an external interface module, the controller comprises at least one group of IIC bus protocol pins and six QSPI bus protocol pins; the controller is connected with a first group of input ends of the output line switching module through IIC bus protocol pins; the controller is connected with a second group of input ends of the output line switching module through a multiplexing target number of pins in the six QSPI bus protocol pins, and is connected with the external interface module through the remaining pins in the six QSPI bus protocol pins; the output end of the output line switching module is connected with the external interface module, and the output end of the output line switching module is communicated with the first set of input ends or the second set of input ends according to a switching control signal sent by the controller. Therefore, different bus signals can be provided to the outside through one external interface module.

This utility model belongs to the field of power control technology, specifically relating to an online DC power supply switching device. It comprises two circuits: one is a DC regulated power supply circuit, where the DC regulated power supply's operating power source is connected to the DC regulated power supply itself, and the DC regulated power supply is connected to two parallel diodes with opposite polarities, which are then connected to the regulated power supply's output adjustment display screen; the other circuit is a temporary power supply monitoring circuit, where the temporary power supply is connected to the input voltage / current display screen, and the input voltage / current display screen, isolating switch, and output voltage / current display screen are connected in series. This utility model enables safer and more efficient on-site DC power supply switching without power interruption, effectively improving personnel efficiency, equipment / personnel safety, and reducing human error. This ensures the safety of nuclear power plant personnel and the normal operation of equipment, and has significant application value in this field.

The invention relates to the technical field of energy management, and discloses a source-network-load-storage multi-energy complementary collaborative optimization scheduling method and system, and the method comprises the steps: deploying collection points at a source end, a network end, a load end and a storage end, and collecting operation parameters in real time; carrying out denoising, abnormity correction, missing value interpolation and normalization processing on the data; extracting data key feature indexes; and formulating a scheduling strategy on the basis, including deciding energy storage charging and discharging according to a source-load power matching condition in a peak-valley period so as to realize economic scheduling of peak clipping and valley filling, and introducing a power supply side risk real-time evaluation and switching mechanism based on cosine similarity so as to realize economic scheduling of peak clipping and valley filling. And a power transmission line risk coefficient calculation and line switching protection mechanism based on a multi-parameter weighted fusion model. The system correspondingly comprises a data acquisition module, a data processing module, a data analysis module and an evaluation scheduling module which jointly realize safe, economical and optimized operation of the energy system.

The application discloses a line control method and device, electronic equipment, storage medium and product, and relates to the technical field of channel configuration. The method comprises the following steps: in response to a test request, determining channel connection requirements and attribute information of a target switch relay instrument; determining a preset channel route associated with the target switch relay instrument according to the attribute information; wherein the channel route comprises at least one channel path; and controlling a switching connection line according to the channel connection requirements and the channel route. According to the application, the channel connection requirements and the attribute information of the target switch relay instrument are determined through a test request, the connection line is automatically controlled and adjusted, the efficiency of switching of the connection line is improved, the efficiency of chip testing is ensured, and the use experience of users is improved.

The application discloses a power distribution network coordination optimization method and device based on source network load storage. According to the pre-defined minimum value optimization problem, the application constructs a power distribution network reconstruction optimization problem, applies the power distribution network reconstruction optimization problem to reconstruct the power distribution network, obtains a line switching state, establishes a power distribution network equivalent model in combination with the operating parameters of the elements in the power distribution network and the line switching state, constructs an objective function based on the power distribution network equivalent model and taking the minimization of the operating cost of the power distribution network as a target, constructs a constraint condition, establishes a source network load storage coordination optimization linear model, solves the source network load storage coordination optimization linear model, obtains an optimal power distribution network planning strategy, and controls the operating state of the elements in the power distribution network according to the optimal power distribution network planning strategy, so that the establishment of the source network load storage coordination optimization linear model for the power distribution network coordination optimization is realized, and the operating state of the distributed power supply and other elements in the power distribution network is controlled according to the actual optimal power distribution network planning strategy.

The invention discloses a coating filter element online switching, cleaning and standby state maintaining system and a working method, and belongs to the technical field of lithium ion battery pole piece manufacturing. The slurry source is communicated with an on-line slurry pipeline and a standby slurry pipeline which are arranged in parallel, and the discharge ends of the on-line slurry pipeline and the standby slurry pipeline are both communicated with the coating machine die head; the NMP storage tank is communicated with an online NMP pipeline and a standby NMP pipeline which are arranged in parallel, the online NMP pipeline is communicated with the feeding end of the online filter element, and the standby NMP pipeline is communicated with the feeding end of the standby filter element; the top of the filter element is provided with an automatic exhaust valve; and the pump, the valve and the sensor are all in signal transmission connection with the PLC. Stable slurry flow and pressure are ensured, direct scrapping loss of the slurry is reduced, solvent consumption and waste liquid discharge amount of manual cleaning are reduced, instant availability during switching is ensured, and human intervention errors are reduced.

This invention proposes a wind power generation line switching device, relating to the field of line switching technology. The mounting frame and guide frame together form a support structure, and the interior of the mounting frame has through holes arranged in a linear array. These through holes serve as mounting holes, and together with the mounting frame, they form a connection structure. This invention solves the problem in existing wind power generation processes where wiring harnesses are often used to transmit and store electrical energy between different storage containers and other devices. However, if a single line is damaged during storage and transmission, it will affect the normal transmission and delivery of electrical energy during wind power generation, potentially leading to damage to the power equipment. By automatically and selectively switching the current circuit when an abnormality such as a circuit break is detected, this design offers a significantly faster response time compared to traditional manual switching.

The invention discloses a telephone line switching device and method, and relates to the technical field of telephone communication, and the method comprises the following steps: collecting the nominal maximum bandwidth and the actual used bandwidth of each line, and obtaining line reference load data based on the nominal maximum bandwidth and the actual used bandwidth; obtaining the actual available bandwidth of the line, and adjusting the line reference load data based on the actual available bandwidth to obtain line capacity data; based on the line capacity data, obtaining an individual sudden drop threshold value through a dynamic adaptive threshold value model, and based on the individual sudden drop threshold value, judging whether a multi-line synchronous bandwidth sudden drop event occurs; aiming at the problem of bandwidth instantaneous sudden drop caused by the fact that multiple lines synchronously trigger a thermal protection mechanism in extreme environments such as high temperature, by setting an individual sudden drop threshold, screening a bandwidth sudden drop line list and quickly matching a standby switching line, quick response and switching in a multi-line synchronous sudden drop scene are realized, large-area service interruption is avoided, and the switching efficiency is improved. And the communication continuity is ensured.

The application provides an ETB line abnormality monitoring method and related products. In the method, an optimal ETB line and a redundant ETB line are configured for an ETB node, the optimal line is monitored based on a preset line abnormality determination rule, and when an abnormality of the optimal line is detected, the redundant line is switched to for performing a data communication task, so that a message is always transmitted through an effective link, a message sending timeout caused by high-frequency flash-off of the original line is avoided, and a misjudgment probability of node loss is reduced. Meanwhile, whether the optimal ETB line is abnormal is determined by a preset time period to determine whether the original line is switched back, communication efficiency after the line is restored is ensured, frequent line switching in a high-frequency flash-off scenario is avoided, and the reliability and safety of train operation are effectively improved.