298results about How to "Easy to set up" patented technology

The invention relates to a method and device for measuring pitch deviation based on a line laser sensor, and the method comprises the following steps: S1, calibrating the position of the line laser sensor, and obtaining the coordinate value of a coordinate system of the line laser sensor in a measurement coordinate system; s2, installing a tested gear; s3, adjusting the relative position of the line laser sensor and the measured gear; selecting a measured position in the tooth surface area of the gear teeth of the measured gear, adjusting the position of the line laser sensor, and recording the sum of the offset of the adjusted line laser sensor relative to the center of the measured gear along the x axis and the y axis in the effective measurement range of the line laser sensor at the measured position; s4, performing zero returning operation on the angle sensor of the rotating shaft of the tested gear; and S5, controlling the detected gear to rotate along the center line of the detected gear. According to the method and the device, the pitch deviation can be measured in a non-contact mode, excessive calibration and leveling are not needed before detection, and the measurement efficiency and the measurement precision are both improved.

This utility model relates to the field of anti-jamming technology for wood chippers, and in particular to a wood chipper with an anti-jamming mechanism. It includes a pressure roller housed within a machine casing, a chain conveyor assembly located below the pressure roller, and a cutting roller housed within the machine casing in conjunction with the chain conveyor assembly. The wood chipper with the anti-jamming mechanism also includes a screen; the screen is positioned below the cutting roller; one end of the screen is hinged to the inner wall of the machine casing, and the other end rests on a limiting mechanism; the limiting mechanism is located between the screen and the chain conveyor assembly, and below the cutting roller. Compared with existing technologies, when jamming occurs, the limiting mechanism activates, causing the screen to rotate around its hinge point with the machine casing, expanding the space between the screen and the cutting roller, reducing jamming, and is simple to set up, low in cost, and conducive to widespread adoption.

An integrated air conditioner with high refrigeration power comprises a shell and a refrigeration assembly. An air inlet and an air outlet are formed in the shell; the refrigeration assembly is arranged in the shell and at least comprises a compressor, a heat exchanger and an evaporator; the refrigeration assembly further comprises a refrigerant pipeline and a liquid pipeline. The heat exchanger is composed of a plurality of heat exchange pipes, and each heat exchange pipe internally comprises a refrigerant channel and a liquid channel. The refrigerant channel in each heat exchange pipe is communicated with the interior of the refrigerant pipeline; the liquid channel in each heat exchange pipe is communicated with the interior of the liquid pipeline; the heat exchange tubes comprise a starting heat exchange tube, a tail heat exchange tube and a middle heat exchange tube; liquid enters the heat exchange tubes to absorb heat of a refrigerant so as to cool the refrigerant, the heat exchange efficiency of the heat exchanger can be effectively improved, the heat exchanger further comprises the starting heat exchange tube, the tail heat exchange tube, the middle heat exchange tubes and other heat exchange tubes, the heat exchange efficiency of the heat exchange tubes is further improved, and the heat exchange efficiency of the heat exchanger is improved. Therefore, the refrigeration efficiency of the air conditioner is effectively improved by adapting the power of the compressor.

The utility model relates to the technical field of bubble generator, and disclose a kind of suspended underwater micro-nano bubble generator, including adjustable support mechanism, bubble generating mechanism and external protection mechanism;Bubble generating mechanism is by multistage water pump, inlet pipe, one-way water inlet valve, connecting pump, transport pump, high-speed rotary cutting nanometer bubble pump, conveying pipe and aeration head etc., and is connected by thread seal sleeve to realize pipeline sealing connection.Mainframe box is equipped with buoy, internal and external pressure monitoring sensor, can realize underwater suspension and pressure real-time monitoring.Adjustable support mechanism can adjust equipment installation height, and external protection mechanism is realized waterproof anti-collision protection by protective shell, sealing washer and protective fence.The device adopts multistage water pump to match double high-speed rotary cutting nanometer bubble pump, can accurately control fluid flow rate and pressure, generates bubble particle size uniform, dissolved oxygen efficiency is high, with the characteristics of intelligent control, anticorrosive durable, protective, suitable for water purification, aquatic ecological restoration etc.

The utility model relates to an in-situ torsion experiment device for X-ray CT (Computed Tomography), and belongs to the technical field of scientific instruments for in-situ torsion experiments for X-ray CT. Comprising a driving assembly, a torque sensor and a clamp assembly. Two ends of a shaft of the torque sensor are respectively connected with the driving assembly and a clamp. The driving assembly comprises a motor, an outer shell, a worm gear and a worm, the worm gear and the worm are rotationally arranged in the outer shell and meshed, the upper end of the worm gear is in key connection with the lower end of the torque sensor, and one end of the worm is connected with the output end of the motor. The driving assembly is stable in transmission during an experiment, has a self-locking function, prevents reverse rotation, improves the detection accuracy, is compact in structure, has a large transmission ratio, is suitable for speed reduction, is low in noise and small in vibration, and effectively prevents the influence on other works in a laboratory.

The utility model discloses a kind of hysteroscope liquid leakage prevention structures, including center cylinder base, the both ends of center cylinder base are fixedly connected with end fixed ring, the outer end array of two sides the end fixed ring is fixedly connected with multiple elastic supporting pieces, and the outer end of multiple elastic supporting pieces of same side is equipped with silica gel outer cover, two sides The outer side of elastic supporting piece is fixedly connected with operating slip ring and insertion stop seat respectively, and the outer end of two sides silica gel outer cover is fixedly connected with the outer edge of corresponding side operating slip ring and insertion stop seat.In insertion, small in diameter, it is convenient to set, and will not cause damage to cervix, can effectively solve the problem of clinical surgeon encountered in hysteroscopy surgery in uterine cavity liquid leakage, reduce operation time and surgical complications, improve operation efficiency and safety.

The application provides a prefabricated transformer substation, which comprises a transformer substation body, the transformer substation body comprises a base, universal wheels are installed on the bottom of the base, the universal wheels comprise a wheel frame and a wheel body, the wheel frame is hingedly installed on the lower part of the base to drive the wheel body to swing up and down, the base is provided with an avoiding structure, the wheel body has a supporting position and a ground-leaving position on the swinging stroke of the wheel body, the wheel frame is provided with a wheel frame locking structure and a wheel frame unlocking structure, the transformer substation body further comprises rolling bodies, the rolling bodies are used for forming rolling drums in cooperation with the wheel body when the wheel body is in the ground-leaving position, and the rolling bodies and the wheel body are correspondingly arranged on each side of the base, so that the projection of the rolling drums on each side of the base in the up-down direction encloses a closed figure. The prefabricated transformer substation can effectively solve the technical problem that animals easily enter the interior of the prefabricated transformer substation to cause damage due to the lack of a protection device in the prior art.

The utility model discloses a kind of carbon black granule screening machines, including frame and screening mechanism, frame: its inside front and back both sides are provided with mounting bracket, screening mechanism: it includes sieve tray, screen, adjusting assembly and connecting assembly, the sieve tray is rotationally connected in the inside of mounting bracket, four sieve trays are staggered distribution up and down, the side of sieve tray far from the middle of frame is discharge end, screen is all set in the inside of sieve tray, adjusting assembly is used for the angle adjustment of sieve tray, connecting assembly is used for the connection of frame and mounting bracket, the carbon black granule screening machine, with multiple-stage screening device, by setting screen of different aperture to carry out multiple-stage screening work, the discharge end of screen is located equipment's front and back both sides respectively, avoid the restriction of space, it is convenient to erect external conveying device, angle adjusting device is also provided, the inclination of different screen can be automatically adjusted, can guarantee screening quality without changing amplitude.

The application provides a high-reliability double-redundancy intelligent steering control device, and relates to the technical field of steering control devices, which comprises a branch pipe, one end of the branch pipe is provided with a limiting mechanism, the limiting mechanism comprises a top plate, the bottom of the top plate is fixedly connected with a protective shell, and the inner wall of the branch pipe is rotationally connected with a shaft rod. In the application, the hydraulic rod drives the limiting rod to pass through the curved hole and enter the inner wall of the limiting pipe, so that limiting is formed at this time. When people control the rotation of the steering wheel to drive the gear to rotate, the inner wall of one side of the curved hole is in contact with the outer surface of the limiting rod, limiting is formed through the limiting rod at this time, so that the gear cannot rotate, the shaft rod cannot continue to rotate, the rotation angle of the steering wheel is limited, and the steering range of the vehicle is reduced. When the speed is lower than the limiting value, the hydraulic rod drives the limiting rod to be taken out from the inside of the curved hole at this time, and the steering range of the steering wheel can be improved.

The utility model discloses an electronic metering socket converter assembly with WIFI (Wireless Fidelity), which comprises an upper shell, a lower shell fixedly mounted at the bottom of the upper shell, a transparent shell screen arranged on the top surface of the upper shell, an LCD (Liquid Crystal Display) screen mounted in an LCD bracket in the top of the upper shell, the LCD screen positioned below the shell screen, a key hole arranged in the top of the upper shell, and a WIFI module arranged in the key hole. Key holes are formed in the upper shell, keys are arranged in the key holes, a display circuit board is fixedly connected to the interior of the upper shell through screws, a module support is arranged in the bottom of the upper shell, a current output function module is inserted into the module support, and a signal circuit board is fixedly connected to the interior of the lower shell through screws. According to the utility model, by monitoring the power utilization condition of the electric appliance and setting the overload alarm threshold, the system can effectively help a user to manage and optimize the use of electric power, thereby saving power, reducing the power consumption, reducing the emission of carbon dioxide, and improving the power utilization safety of the electric appliance at the same time.

This invention relates to a method for controlling the surface accuracy of elliptical thin-walled compartments in additive manufacturing, belonging to the field of additive manufacturing technology. Addressing the challenges of surface control in additive manufacturing and post-processing of elliptical thin-walled compartments, this invention proposes a surface accuracy control method based on an internally supported dimensional structure. This method includes steps such as additive manufacturing model design of the elliptical compartment and its internally supported dimensional structure, integrated additive design, thermal processing, machining, and removal of the internally supported dimensional structure. The method applies the control of the internally supported dimensional structure extension used in additive manufacturing to the post-processing stage, achieving full-process surface control from additive manufacturing to post-processing, saving product manufacturing time and improving the overall efficiency of additive manufacturing.

The application discloses a building construction elevator shaft protection structure and a construction method thereof. The protection structure comprises a protection door used for being clamped to a door of an elevator shaft, a supporting seat connected with the protection door and used for being clamped in the elevator shaft, the supporting seat comprises a fixed frame connected with the protection door, a rotating frame reversibly connected with a side of the fixed frame away from the protection door, and a locking assembly used for locking the rotating frame from being reversed when the rotating frame is reversed to be flush with the fixed frame, a clamping piece is arranged on the outer periphery of the rotating frame and used for being clamped to an inner wall of the elevator shaft, and lifting lugs for lifting ropes are formed on the top of the fixed frame and the rotating frame.

The utility model relates to the technical field of semiconductor manufacturing, provide a kind of chemical liquid flow calibration sampling device and chemical plating equipment.Chemical liquid flow calibration sampling device includes: liquid injection pipe, sampling tube and passage switching device;The liquid injection pipe is used to transport chemical liquid, and the outlet end of the liquid injection pipe is used to communicate with the inner cavity of chemical tank;The inlet end of the sampling tube is communicated with the liquid injection pipe, and the outlet end of the sampling tube is located outside the chemical tank;The passage switching device is used to switch the flow direction of chemical liquid in the liquid injection pipe, so that chemical liquid flows out along the outlet end of the liquid injection pipe or flows out along the outlet end of the sampling tube.The above-mentioned device can simplify the sampling process of chemical liquid, improve the calculation efficiency of flow deviation, and also reduce the risk of operation and the risk of chemical liquid contamination.

The utility model relates to a push -and -pull window motor. It has solved the existing push -and -pull window motor complex structure, occupies space big etc. technical problem. Including the motor casing of inner chamber, the motor cavity and the power output cavity of axial distribution setting have in the motor casing, install motor drive subassembly in the motor cavity, the screw rod body that is connected with motor drive subassembly is axially rotatory and is provided with in the power output cavity, the screw rod nut seat that is connected with screw rod body screw thread is set up on the screw rod body, the motor casing one side has the sliding platform that is located power output cavity outside and along the axial extension of motor casing, the motor power output block is axially movably established on the sliding platform, and the screw rod nut seat is connected with the motor power output block through the connecting structure of the side of sliding platform is penetrated. Advantages lie in: the motor cavity and the power output cavity are separated and set through the partition seat, and can improve compactness of structure, reduce the occupied space through the transmission connection of motor drive subassembly and screw rod body, can be applicable to the scene of limited space.

This invention relates to a temperature control device for a battery pack in a new energy bus, comprising a battery box, several module boxes arranged side-by-side in the middle of the inner side of the battery box, several battery cells arranged side-by-side in the module boxes, a heat spreader plate embedded in one inner wall of one side of the module box, several heat exchange tubes embedded inside the module box and abutting against the heat spreader plate, an insulation tank on one side of the outer side of the battery box, a heat exchanger on one side of the insulation tank, and an air conditioner on one side of the heat exchanger. The air conditioner is connected to the heat exchanger and the insulation tank respectively through refrigerant pipes. A water pump is installed at one end of the insulation tank. In winter or low-temperature environments, it collects heat from the air, heating the water in the insulation tank to hot water. In summer or high-temperature environments, it releases heat to the air through the heat exchanger and cools the water in the insulation tank to cold water, so that the battery cells can be maintained between 20 and 30 degrees Celsius in various temperature environments, so that the working efficiency of the battery cells can be optimized.

The utility model provides a small coffee machine, and relates to the technical field of coffee machines, and the small coffee machine is characterized by comprising an upper machine body, an extraction assembly is arranged on one side of the bottom of the upper machine body, a first rotating assembly is arranged on the other side of the bottom of the upper machine body, and the extraction assembly and the first rotating assembly are arranged side by side; the extraction assembly is provided with a first water inlet and a first water outlet; a second rotating assembly rotationally matched with the first rotating assembly is arranged on one side of the top of the lower machine body, a water tank, a heating assembly and a water pump are arranged in the lower machine body, the water tank is provided with a second water inlet and a second water outlet, and the water pump is provided with a third water inlet and a third water outlet; the third water inlet is connected with the second water outlet, the third water outlet is connected with the first water inlet, and the heating assembly is arranged on the outer side of the water tank and used for heating the water tank. The small coffee machine has the advantages of being small in occupied space and convenient to use.

The utility model belongs to the technical field of laser lithotripsy, and discloses an in-vitro laser lithotripsy efficiency detection device. The device comprises a container, a liquid injection mechanism and a collector, the container is provided with a first opening and a second opening, the first opening is used for inserting a laser fiber, the second opening is located at the bottom of the container, the liquid injection mechanism is communicated with the container and can inject liquid into the container, and the collector is provided with a third opening and at least one fourth opening. The third opening is formed in the top of the collector, the fourth opening is formed in the bottom of the collector, the third opening is communicated with the fourth opening, the second opening is communicated with the third opening, and the size of the fourth opening is not larger than that of the second opening. By means of the device, in-vivo lithotripsy conditions can be simulated, so that detection is closer to clinical practical operation, particles obtained after lithotripsy can be distinguished according to the size, the lithotripsy effect of laser lithotripsy is evaluated, and parameter setting of clinical practical operation can be guided easily.

The invention discloses a PLC control method and system based on double-shaft coupling. The method aims at improving the precision, stability and synchronism of double-axis motion control. The method comprises the steps of setting initial parameters of double-axis motion when a PLC system is started, and establishing a coupling relationship between double axes; generating a double-axis motion instruction according to a production task requirement; and the motion instruction is converted into a control signal, the double-shaft motor is driven to move, and coupling parameters are adjusted in real time to maintain synchronization. In addition, the method can monitor faults in the double-shaft movement process in real time, and once the faults are detected, double-shaft movement is stopped immediately, an alarm signal is sent out, and fault information is recorded. The method is realized through the PLC, has the characteristics of high-precision synchronization, high adaptability, fault protection, low cost and easiness in operation and maintenance, and is suitable for various complex production tasks.

The utility model provides a wind-resistant and lodging-proof tree supporting frame which comprises a supporting base, the supporting base comprises a plurality of arc-shaped tooth strips and dismounting assemblies, and the adjacent arc-shaped tooth strips are detachably connected through the dismounting assemblies; the adapting mechanism comprises a plurality of length adjusting assemblies, the upper ends of the length adjusting assemblies are rotationally connected with rotating assemblies, the rotating assemblies are connected to the bottoms of the contact assemblies, and the lower ends of the length adjusting assemblies are connected with angle adjusting assemblies. According to the utility model, the plurality of arc-shaped tooth racks can be mounted and dismounted by utilizing the dismounting and mounting assembly, so that the supporting base is conveniently arranged on the outer side of a tree, and the plurality of arc-shaped tooth racks and the dismounting and mounting assembly are in contact with the ground by adopting an annular structure, so that the contact area and the connection strength between stress points are increased; and when the supporting frame is stressed, other structures such as the arc-shaped tooth strips and the dismounting and mounting assemblies can assist in supporting the force, so that the strength of the supporting base is improved, and the stability and lodging resistance of the supporting frame can be improved.

The utility model discloses a methanol fuel liquid level sensor, and belongs to the technical field of liquid level sensors, the methanol fuel liquid level sensor comprises an accommodating part and a liquid level detection part, the accommodating part comprises an oil tank main body, one end of the oil tank main body is provided with a communicating vessel assembly, and the liquid level detection part is arranged on the inner side of the communicating vessel assembly; the liquid level detection component comprises a sensor component arranged on the inner side of the communicating vessel component, a physical liquid level component is arranged outside the communicating vessel component, and the physical liquid level component is matched with the sensor component. Through the arrangement of the physical liquid level assembly, a liquid level observation and measurement structure with the physical property can be achieved in cooperation with the sensor assembly, the remaining situation of fuel in the fuel tank can be obtained through the structure when a sensor fails or is damaged, and practicability is improved.

This invention discloses a hydrogen-ammonia fuel injector with a swirling structure. The injector includes a fuel injector housing, an ammonia inlet assembly, an electronic control assembly, a valve assembly, an air intake assembly, and an injection assembly. The injection assembly includes an injector housing, a hydrogen-ammonia interface, a fixed sleeve, a flow pipe, a sliding sleeve, a fixing block, a return spring, and a return assembly. Swirling vanes are installed inside the flow pipe, forcing liquid ammonia and hydrogen into a high-speed swirling state. Centrifugal force and shear force are used to achieve uniform mixing of the two phases, forming a homogeneous hydrogen-ammonia fuel mixture. Combined with the hyperboloidal outlet channel at the bottom of the flow pipe, the injection flow pattern is organized, achieving an integrated function of "hydrogen premixing - forced swirling mixing - injection flow pattern organization." This fundamentally solves the combustion instability problem caused by uneven mixing, significantly improves the uniformity of the hydrogen-ammonia fuel mixture, and, combined with the flow pattern organization effect of the hyperboloidal outlet, effectively improves combustion stability and fuel utilization, reducing NOx emissions and ammonia slip.

This utility model discloses a truss heat insulation structure for an automatic tube decarbonizing machine. The front crossbeam, left tie rod, rear crossbeam, right tie rod, first diagonal tie rod, second diagonal tie rod, third diagonal tie rod, and fourth diagonal tie rod of the truss are all provided with heat insulation layers on both sides and the bottom surface. An outer shell is provided outside the heat insulation layers. A ring-shaped heat baffle is provided inside the truss, vertically arranged. The heat baffle is fixedly connected to the outer shell through spaced-apart support sleeves. The base is circular and located in the lower middle of the truss. The base is connected to the outer shell at the diagonal tie rods through vertically arranged connecting side plates. The front crossbeam, left tie rod, rear crossbeam, right tie rod, first diagonal tie rod, second diagonal tie rod, third diagonal tie rod, and fourth diagonal tie rod are all hollow tubes and fluidly connected. This utility model provides excellent cooling and heat insulation of the truss during decarbonization operations with the automatic tube decarbonizing machine, ensuring the automatic tube decarbonizing machine can operate normally at high temperatures, shortening the decarbonization operation time, improving work efficiency, and offering a simple structure.

The utility model discloses a back spray piece and back spray assembly, back spray piece includes the body, switching part and first reset part. The body is equipped with the water inlet hole and is suitable for with the water outlet hole of water inlet hole intercommunication, and the back spray water hole is suitable for along the first direction parallel to the horizontal plane and / or the direction of inclination to the first direction and washes to the back plate of human body, switching part is suitable for the movement between the first position and second position, and switching part is in the first position, makes water inlet hole and back spray water hole intercommunication, in the second position, makes water inlet hole and back spray water hole not intercommunication, thereby realizes the switching of waterway. The both ends of first reset part act on the body and switching part respectively, and are suitable for energy storage when switching part moves to the first position, and release energy to drive switching part to reset to the second position when back spray water hole does not water, prevent the next time opening, and back spray water hole directly water, lead to the splash problem of opening, and simultaneously, it can also assist switching part to switch to the second position, and it is more labor-saving when switching.

The utility model discloses an intelligent bird repelling device for insulator, include: power module, with main control module electric connection, be used for to main control module power supply, vibration detection module, with main control module electric connection, be used for detecting the vibration signal of bird pecking insulator when, bird module, including sounding unit and light unit, main control module and bird module electric connection, be used for according to vibration signal drive sounding unit and light unit to respectively produce different frequency sound and rhythm change's light to drive bird. The utility model discloses through vibration detection module to detect the vibration signal of bird pecking insulator when, get main control module can according to vibration signal drive sounding unit and light unit respectively produce different frequency sound and rhythm change's light to drive bird, can effectively improve the bird repelling effect, reduce deployment and maintenance cost, through vibration detection module can prevent the false triggering of bird module, reduce operating power consumption, improve the life.

The present application relates to a transformer fault diagnosis method based on improved sparrow search algorithm optimization SVM, through the pretreatment and feature engineering of transformer oil chromatographic data; according to the data of pretreatment and feature engineering, the model based on oil chromatographic data is constructed, and the model parameters are optimized and trained; the input transformer oil chromatographic data is carried out transformer fault diagnosis based on the optimized and trained model.The present application improves the sparrow search algorithm by introducing the best point set strategy, the golden regular update rule, the differential mutation disturbance and the reverse learning mechanism, so as to comprehensively improve the parameter optimization process of support vector machine, the global exploration ability of the algorithm is enhanced, the risk of falling into local optimum is avoided, and the problem of premature convergence is effectively avoided.In addition, the improved algorithm pays attention to multi-link optimization, and the parameter setting is simple, the algorithm is low in use difficulty, so that the optimized support vector machine (SVM) can effectively improve the transformer fault prediction precision.

This application relates to the field of nuclear reactors, specifically to a reactor comprising: a reactor vessel, a core assembly, a support member, a shielding assembly, a coolant heat exchange and delivery assembly, and a reactivity control assembly. The reactor vessel forms a top opening; the support member provides support for the core assembly within the reactor vessel, and a coolant flow channel is formed between the support member and the reactor vessel for coolant flow; the shielding assembly is disposed within the reactor vessel to provide shielding for the core assembly; the coolant heat exchange and delivery assembly is configured to drive coolant to flow within the coolant flow channel to the core assembly to cool the core assembly, and to guide and cool the coolant flowing out of the core assembly; the reactivity control assembly controls the reactivity of the reactor; the support member also supports the coolant heat exchange and delivery assembly, and together with the coolant heat exchange and delivery assembly, closes the top opening. The reactor components of this application are relatively concentrated and compact, achieving a small reactor design.

The invention relates to a method for folding sheets made of a fiber-based material in a folding machine, wherein a folding pocket device (4) with at least one folding pocket (4a) is used, the folding in the folding pocket device (4) is assisted by blowing (10) and the flow parameters of the blowing (10) are set in accordance with the material (22). For setting the blowing (10), a test strip (23) of the material (22) is loaded with an auxiliary blowing (11) in a setting device (30) and is thereby deformed into a predetermined target shape (26), for which the flow parameters of the auxiliary blowing (11) are set and the flow parameters of the blowing (10) are set in accordance with the flow parameters of the auxiliary blowing (11). The invention can simplify the setting required when folding in a folding pocket with blowing assistance in an advantageous manner, avoid errors and thus improve the production of the folded product. The invention is applied, for example, in a folding machine with a folding pocket device. The invention also relates to a setting device and a folding machine.

This application relates to a load power failure protection system, comprising: a circuit (110) having a power receiving port (110) and a plurality of load ports (120, 130, 140); one or more sensors (A) disposed on the circuit for detecting real-time values ​​related to electrical parameters at each load port; a controller (200) associated with the one or more sensors to receive the real-time values ​​measured by each sensor and to generate a cut-off signal when the real-time values ​​meet preset conditions; and one or more switches (C) associated with the controller and switching to a cut-off state in response to the cut-off signal to cut off the power supply to the associated load ports, wherein the associated load port of each switch is one or more of the plurality of load ports, and each load port is the associated load port of at least one of the one or more switches. This application also relates to a power distribution unit including this system.

The application provides a road slope measurement method and system based on mobile crowd sensing, comprising the following steps: S1: dividing a to-be-predicted area and a predicted area, assigning a data collection task, and collecting data to the cloud; S2: after the cloud multi-modal sensing data is time-space aligned, performing frame-by-frame correlation matrix operation, fusing the coordinate and the attitude vector of the mobile device, and dividing the space position into a training set and a test set after removing data noise; S3: extracting time-domain features and frequency-domain features from the training set and the test set data, and calculating individual independent features; S4: training and testing the model by using the individual independent features, and further performing data aggregation and result optimization on the preliminary prediction result. The application is beneficial to efficiently and low-costly realizing large-scale road slope sensing, beneficial to establishing a city three-dimensional map, further enriching the content of the current digital map, and shortening the data updating cycle.