493results about How to "Guaranteed unchanged" patented technology

The embodiment of the invention discloses a gateway control method, device and system based on virtual machine migration, and relates to the communication field. The gateway control method, device and system are used for solving the problem that when data transmission is carried out after virtual machine migration, the bandwidth for conducting data transmission between devices is occupied so that bandwidth resources can be wasted. According to the scheme, the gateway control method includes the steps that an SDN controller obtains the IP address of a first virtual machine gateway, the MAC address of the first virtual machine gateway and the VTEP IP address of a second physical server; the SDN controller controls a second physical gateway to configure a second virtual machine gateway on the second physical gateway for a virtual machine according to the VTEP IP address of the second physical server, the IP address of the second virtual machine gateway is the same as the IP address of the first virtual machine gateway, and the MAC address of the second virtual machine gateway is the same as the MAC address of the first virtual machine gateway; a first flow list item is created to enable the second physical gateway to forward data to the virtual machine according to a data forwarding strategy indicated by the first flow list item.

The invention discloses a laser visual tracking system, which mainly comprises an industrial personal computer, wherein a COM 1 (Component Object Model) port of the industrial personal computer is connected with an X axis motor and a Z axis motor through a motor control and drive circuit; output ends of the X-axis motor and the Z-axis motor are connected with a welding torque; the controller of the welding torque and a welding machine control circuit are connected with the industrial personal computer; the industrial personal computer is also connected with a laser sensor for acquiring information on the welding torque and a workpiece in real time and delivering the acquired information to the industrial personal computer; the laser sensor is a visual sensing module and mainly comprises a camera and a laser diode; the camera is vertically aligned with the workpiece; a laser is slantwise arranged and forms an angle of 30 degrees with the laser; laser emitted by the laser irradiates the workpiece to form a narrow light strip; after the light strip is reflected or refracted by the workpiece, the light strip enters the camera to image, and the image is transferred to the industrial personal computer for processing; after the image is analyzed and processed by the industrial personal computer, an action command is emitted to the welding torque, the X-axis motor and the Z-axis motor.

The invention discloses a method for RGBW-type four-primary-color display gray scale combination conversion. The method comprises the steps: based on the color gamut matching principle, through the rational colorimetry model, calculating the color gamut of the original RGB three-primary-color display in the L*a*b space as the source color gamut, and using the color gamut of the RGBW four-primary-color display in the L*a*b space as the target color gamut; and mapping the source color gamut to the target color gamut one to one by using the rational color gamut matching algorithm, and then performing the color gamut space conversion, and finally realizing the matching conversion from RGB to RGBW gray scale combination. Compared with the traditional RGBW conversion algorithm, the scheme is capable of strictly calculating tristimulus values of each gray scale combination and converting to the L*a*b space, using the color reappearance ability of RGBW in the greatest degree through the color gamut matching, guaranteeing that the hue angle is not changed before and after the conversion in the conversion processes, and reducing the color distortion.

A process for preparing the nano-class composite photocatalyst includes such steps as preparing TiO2 aerogel by supercritical technique, and osmosizing metallic ions into TiO2 main body. Its advantages are high catalytic activity, wide trigger range moving from UV to visual light, and high degradability to hydrocarbon, oily sewage and more pollutants.

The application discloses an IMS (multimedia subsystem) registration and voice business providing method, a system, a device and a storage medium. The IMS registration method includes steps of carrying out 5G network registration if current network environment is the environment covered by a 5G network; then switching the working network to a 4G through a fusion core network acquired through fusing and allocating a 4G core network and a 5G core network so as to keep the IP address unchanged; completing the IMS registration under the 4G network, and carrying out the voice business after switching an IMS registered user terminal from the 5G network to the 4G network. The voice business providing method includes steps of automatically switching the working network to 4G network through the fusion core network acquired through fusing and allocating the 4G core network and the 5G core network when it is monitored that the current state is the to-be-carried voice business state and the current working network is 5G network, and completing corresponding voice business. The IMS registration method and the voice business providing method are combined to effectively realize the purpose of providing the voice business for the 5G network terminal.

The invention provides an intelligent video monitoring system base on multi-camera data fusion. A processing method of multi-camera stimulating videos includes that when stimulating videos are collected by multiple cameras directly, video transmission is performed through adopting video cables, videos are collected and transferred in an A / D (analog / digital) manner, digital videos are acquired and then data fusion and intelligent video processing are performed. A processing method of multi-camera digital videos includes that a video compressing panel is added on the basis of the processing method of the multi-camera stimulating videos, the collected digital videos can be compressed by the video compressing panel and transmitted through a network, and then be received and decompressed by a master processing system; and data fusion and intelligent video processing are performed by the master processing system. The intelligent video monitoring system is applicable to traffic monitoring systems or other systems, and functions of background monitoring, interested-area monitoring, target tracking, target three-dimensional reconstruction and the like are realized.

The invention discloses a double-layer channel variable-section turbine control device, belonging to the field of an internal combustion engine. The double-layer channel variable-section turbine control device comprises a turbine housing, wherein the turbine housing is internally provided with a gas inlet inner channel and a gas inlet outer channel; the gas inlet outer channel is positioned at the outer side of the circumferential direction of the gas inlet inner channel; and a partition wall is arranged between the gas inlet outer channel and the gas inlet inner channel. The double-layer channel variable-section turbine control device is characterized in that the gas inlet inner channel is provided with a gas inlet; the position on the partition wall, close to the gas inlet, is provided with an outer channel gas inlet which is provided with a gas inlet control device; the double-layer channel variable-section turbine control device can effectively guarantee that the double-layer channel variable-section turbine meets the supercharging needs of the all condition range of the engine, simultaneously has no existence of potential unreliability of rotary vane type and axial movement type variable-section turbine supercharger and has simple and reliable products.

The present invention discloses an apparatus for forming and screening a large-scale single-layer two-dimensional liquid droplet array, and a use method thereof. The apparatus comprises a micro-column array chip, a scraping plate for auxiliary spreading of a liquid droplet, a probe for controlling the liquid droplet, a three-dimensional translation table and other components, wherein a micro groove unit for trapping the single liquid droplet is formed by using the gap between micro-columns, and the liquid droplet is spread in the micro groove unit in a single-layer and single manner through gravity effect and capillary effect or through an auxiliary means so as to form the single-layer liquid droplet array. With the apparatus of the present invention, the accurate positioning and detection on the liquid droplet, the sucking on the target liquid droplet and the subsequent treatments can be performed. According to the present invention, the apparatus has characteristics of simple structure and easy operation; and the method has advantages of fast liquid droplet spreading, high flux, high liquid droplet trapping efficiency, liquid droplet position fixing and the like, and is suitable for single cell analysis and screening, single molecule analysis and screening, high-throughput gene screening, protein directed evolution, antibody screening, microbial research, drug screening, and other fields.

The embodiment of the invention discloses a voice noise reduction method and device, a storage medium, and a mobile terminal. The method includes the steps: receiving a voice signal collected by a single microphone of an earphone, extracting an initial amplitude spectrum and a phase spectrum of the voice signal, and transmitting the initial amplitude spectrum to a pre-trained noise reduction modelto obtain a first noise reduction amplitude spectrum, masking the first noise reduction amplitude spectrum, generating a second noise reduction amplitude spectrum, and recombining the second noise reduction amplitude spectrum and the phase spectrum to generate a first noise reduction speech. Through the above scheme, the method maintains the phase spectrum of the voice signal, and performs the noise reduction of the amplitude spectrum of the voice signal based on the noise reduction model, performs the masking of the processed first noise reduction amplitude spectrum, eliminates the distortion in the noise reduction process, solves a problem that the noise of the voice signal collected in a noisy environment is big, and achieves the quick and precise noise reduction of the voice signal collected by the earphone.

The invention relates to the technical field of battery lamination, particularly to an integrated cell laminating machine and a cell laminating method. The integrated cell laminating machine comprises a laminating station, wherein the laminating station comprises a rotary plate, a rotary plate rotating apparatus arranged below the rotary plate for driving the rotary plate to rotate, and multiple laminating apparatuses uniformly arranged on the rotary plate for performing lamination; each laminating apparatus comprises a laminating rotary platform, a laminating power mechanism for driving the laminating rotary platform to swing in a vertical plane, and a first attraction mechanism and a second attraction mechanism which are symmetrically arranged on the two sides of the laminating rotary platform for attracting and driving a positive plate and a negative plate to swing in a vertical plane, and a diaphragm material-releasing mechanism mounted above the laminating rotary platform for supplying diaphragms, wherein each laminating power mechanism is positioned at the bottom of the corresponding laminating rotary platform; and the swinging track of the laminating rotary platform is externally tangent with the swinging track of the corresponding first attraction mechanism and second attraction mechanism. The integrated cell laminating machine has high laminating efficiency, high laminating precision and good laminating quality.

The invention discloses a method for a mobile terminal to access a network through some embodiments. The method comprises the steps as follows: a mobile management entity receives a request for establishing channel connection from the mobile terminal; and the mobile management entity establishes channel connection according to anchor point information obtained from an anchor management entity. The invention further provides anchor point management equipment, which comprises a first unit and a second unit used for saving and maintaining the address information of a local anchor point; the second unit is used for interaction with the mobile management entity, and the local anchor point and / or a mobile anchor point to acquire the information of the local anchor point and register with the first unit. The method and the device can optimize the process of establishing the mobile terminal during the system switch; and through acquiring a registered local anchor point which is the same as the local anchor point before the switch, the usability of the local anchor point is guaranteed and the speed of switch of the mobile terminal among systems is increased.

The invention relates to an ultraviolet (UV) curing adhesive for a transfer printing film, and an application thereof. A radical UV curing system and a cationic UV-curing system are combined to form a double UV curing system of the UV curing adhesive. According to the present invention, curing rate of the radical is fast, shrinkage of curing volume of the cationic is small, and adhesion of the cationic to a base material is excellent. A technical scheme of the present invention comprises: uniform coating the adhesive on a film printed patterns to obtain a transfer printing film; then carrying out a quick pasting on surface of a substrate through a existing transfer machine; and finally carrying out a UV curing process to obtain a product, wherein a decorative pattern layer of the product is firmly combined with the surface of the substrate. Compared to heat curing adhesive and single UV curing adhesive, the UV curing adhesive provided by the present invention has advantages of energy saving, low VOC discharging and quick curing rate.

The invention provides an automatic contact instrument used for measuring thin sheet material dimensions. The automatic contact instrument comprises a measuring head, a control system comprising a numerical control and calculation module, and a shaft system moving along a three-dimensional coordinate, wherein the measuring head comprises a guide rail die and a guide core, the guide core penetrates through the guide rail die, the guide rail die has an air inlet and an air guide groove, an air guide rail is formed in the guide rail die, a top portion of the guide rail is provided with the air inlet, a bottom portion of the guide rail is connected with a spring, the spring is arranged between the guide core and a bottom board, a lower end of the spring is connected with a probe, a top portion of the guide core is connected with a raster ruler, the raster ruler is connected with a laser displacement sensor, and the laser displacement sensor is connected with the control system. The measuring head of the measuring instrument employs the pneumatic control technology, precise adjustment on a measuring force can be realized through changing internal and external air pressure of the guide core, a value of the measuring force can be not only adjusted, but also the measuring force is guaranteed to be constant; a three-dimensional motion platform is employed in combination with the numerical control technology, all-round and automatic measurement is realized, and thereby measurement precision of surface dimensions of thin sheet material type elements can be improved.

The invention relates to a multiple-piece magneto-rheological fluid torque transferring device. The device has a multiple-piece layered structure, so that transferred torque is increased exponentially; the torque transferred by the device can be adjustable within a wide range by changing the current of a magnet exciting coil in the device; and under the condition that a driven shaft is fixed, the device can output adjustable and flexible torque which can be used as protecting links in a damper, a torsion applying device or a transmitting system. The device consists of a fixed supporting part, a driving rotor part, a driven rotor part, the magnet exciting coil, magneto-rheological fluid, a seal part and the like. The fixed supporting part consists of a left bearing end cap, a right bearing end cap, a shell left end cap, a shell right end cap, a left magnet yoke and a right magnet yoke. The driving rotor part and the driven rotor part consist of a driving shaft, driving discs, non-magnetic aluminum sleeves, a driven shaft and driven discs. The seal part comprises a dynamic seal ring, a seal ring baffle plate and a rubber oil seal. The multiple-piece magneto-rheological fluid torque transferring device has the characteristics of low energy consumption, wide torque adjustable range, sensitive response, excellent performance and the like.

A device for testing infiltration capacity of a frozen soil side slope during raining belongs to the field of civil engineering equipment, solves the problem that the traditional device for studying the rainfall infiltration capacity cannot be used for studying the infiltration capacity of frozen soil, and includes a refrigerator box, a soil sample box, a refrigerator box cover, a Markov bottle, a water temperature regulator, a raining device, sunshine simulation equipment, a slope surface water collecting tank, a box bottom water collector and a monitoring element, wherein a refrigerating fluid pipe is laid on the inner wall of the refrigerator box in a curved manner; an inlet and an outlet are arranged on the box wall of the refrigerator box and connected with a pipeline of a refrigerating machine outside the refrigerator box; the water temperature regulator is placed in the Markov bottle, and the water temperature of the Markov bottle is 5 DEG C to 30 DEG C; and the sunshine simulation equipment is installed above the soil sample box. The device is used for simulating the infiltration condition of the frozen soil side slope during raining, studying the influence degrees of all the influence factors on the rainfall infiltration capacity and providing the reference for the evaluation on the frozen soil slope stability, thereby being used for guiding the design and maintenanceof the side slope project for railways and highways in frozen soil areas.

The invention discloses a method for producing heat-resistant steel automobile exhaust pipes by an iron mold sand lining process. The method includes modeling, core feeding, flask combining, casting, sand shakeout. Chilling position in casting of automobile exhaust pipes is determined before modeling. The special iron mold sand lining process is applied to production of heat-resistant steel, the characteristic that a sand shell cannot be separated from an iron mold during the modeling can be utilized, deformation of the sand shell is avoided, and accordingly precision of the casting is increased. Chilling points are controlled manually by controlling thickness of the sand shell, flasks of the iron mold can function in chilling and feeding sufficiently for places needed to be chilled, so that compactedness of the casting is guaranteed, product yield and quality are improved.

The invention relates to a testing device and a testing method for a forming limit diagram under a high-temperature constant-strain rate condition. The device comprises a sample deformation pressure device, a real-time strain measurement device and a controller; based on a testing method for the forming limit diagram under the high-temperature constant-strain rate condition built by the testing device, the constancy of the strain rate of a sample in a central point is realized under the condition of constant forming temperature, and a forming limit diagram under the obtained slab isothermal condition contains a forming limit curve under a constant-strain rate condition in a certain strain rate range. The testing device and the testing method have the advantages of high control accuracy and accuracy in measurement, and are significant in theoretical research and practical application of light alloys and high-strength steel warm-hot forming.

The invention provides a lithium battery ohmic resistance test method based on a double-pulse current. A lithium battery is statically placed, the lithium battery is then made to realize first instant discharging through a pulse current, and first instant charging is then carried out; the lithium battery is made to realize second instant charging through the pulse current, second instant discharging is then carried out, and charging ohmic resistance and discharging ohmic resistance of the lithium battery are finally calculated. According to the method, the double-pulse current is employed, for a single-pulse charging or discharging current, the pulse current is improved by one times, a voltage response amplitude of the battery is improved through increase of the pulse amplitude, and errors of test equipment and a data acquisition system are reduced; SOC of the lithium battery during a test is guaranteed to be unchanged through employing the double-pulse current, change of a lithium battery open circuit voltage caused by change of the SOC of the lithium battery can be avoided, lithium voltage drop completely depends on change of a DC resistor, so a test value is closer to the ohmic resistance, and thereby test precision of the ohmic resistance is improved.

The invention discloses a multi-head drilling machine which is characterized by comprising a shell, a rotating disc, a main power gear and a main regulating gear. The main power gear is in transmission connection with a motor, N auxiliary power gears meshed with the main power gear are evenly distributed on the periphery of the main power gear, the auxiliary power gears are connected with power transmission shafts which are arranged on the rotating disc in a rotatable mode, the rotating disc is arranged in the shell in a rotatable mode, the power transmission shafts are connected with a first gear, the main regulating gear is connected with a regulating rod, N auxiliary regulating gears meshed with the main regulating gear are evenly distributed on the periphery of the main regulating gear, the auxiliary regulating gears are connected with drill rod sleeves which are arranged in the shell in a rotatable mode, eccentric sleeve holes are formed in the drill rod sleeves, the eccentric sleeve holes are used for mounting drill rod shafts which are arranged in a rotatable mode, the drill rod shafts are connected with a second gear, the second gear is meshed with the first gear, and the power transmission shafts are connected with the drill rod shafts through a swing arm. According to the multi-head drilling machine, multi-hole simultaneous machining can be performed on workpieces with different hole distances, machining precision is high, and the work efficiency is improved.

The invention provides a Chinese font conversion and generation method based on a small number of target fonts. The method comprises the following steps: (1) preparing an original font stroke data setand an original font-target font data set; (2) selecting training samples with relatively high representativeness by adopting a simple image dimension reduction and clustering algorithm; (3) trainingan end-to-end deep stroke discrete font transformation (DeepSDFT) neural network, and storing network parameters; and (4) automatically generating Chinese characters in the target fonts by using theDeepSDFT neural network to acquire remaining Chinese characters in the target fonts. According to the Chinese font conversion and generation method based on a small number of target fonts, no manual interaction is needed, and no network pre-training is needed; a small number of network parameters are needed; the method can be used for generating various target fonts; interpretability of an embedded feature space is realized; the Chinese font conversion and generation method is applicable to a font design assisted scene and is relatively high in practicability.

The invention provides an automatic coupling system of a reflection-type optoelectronic device. The automatic coupling system comprises a supporting structure, a manual fine-adjusting alignment unit, an automatic five-dimensional fine-adjusting alignment unit, an image acquisition device and an automatic ultra-violet curing device, wherein the automatic five-dimensional fine-adjusting alignment unit is formed through modification of a manual fine-adjusting frame namely a push rod motor and an optical coupling structural component are mounted on the basis of the manual fine-adjusting frame; the manual fine-adjusting alignment unit is designed by adding a right device adjusting device and a device power-up device on the basis of the manual fine-adjusting frame. According to the automatic coupling system of the reflection-type optoelectronic device, provided by the invention, the manual fine-adjusting alignment unit is fixed, and light searching coupling is realized by adjusting the automatic five-dimensional fine-adjusting alignment unit according to the control algorithm in a control circuit; besides, the automatic coupling system further has the advantages that the cost is low, the expandability is high, the design is ingenious, the operation time is long, and the automation degree is high.

The invention discloses a tunnel curve segment lofting method based on circle coordinates, which is characterized in that the method comprises the following steps of: step 1. preparation step: determining the positions of an original point of a measuring-coordinate system and a circle center O (a, b) of a tunnel curve segment, and establishing the measuring-coordinate system, namely, an XOY coordinate system; step 2: lofting step: obtaining coordinates (x, y) of a measuring point at a cross section, calculating the value of (x-a)2+(y-b)2-r2, namely, a calculated value, wherein r represents the radius of the tunnel curve segment; moving the position of the measuring point according to the size and the plus-minus of the calculated value, updating the coordinates (x, y) of the measuring point till determining points of intersections of the cross section with an axis, an inner arc and an outer arc, thus finishing the lofting of the cross section; step 3. in the tunneling process of the tunnel curve segment, repeating the step 2, and finishing the lofting of the whole tunnel curve segment. The tunnel curve segment lofting method based on the circle coordinates has less calculated amount, is easy to implement and has high lofting precision.

The invention discloses a client information verification method based on a DHCPv6 relay, which is applied in a communication system with the DHCPv6 relay, a client and a server. The method comprises the following steps that: the DHCPv6 relay receives a message transmitted by the client for request of confirming whether the IPv6 address / prefix of the client continues to be effective, converts the message into a message for request of obtaining lease information of the client, and transmitting the obtained massage to the server; and the DHCPv6 relay receives a response message transmitted back by a server, and transmits the response message to the client after adding the message confirming whether the IPv6 address / prefix of the client continues to be effective. The invention solves the problem of the prior art that the client can not obtain the lease information of the IPv6 address / prefix while transmitting the CONFIRM message, and also satisfies requirements of the specification of the DHCPv6 protocol that the CONFIRM / REPLY message is needed to carry out interaction when the link state of the client is changed.

The invention provides a PS (Packet Switch) domain system for a small-sized mobile core network. The PS domain system comprises a mobility management module, a session management module and a GTP (GPRS Tunneling Protocol) tunnel processing module, wherein the mobility management module is used for managing the mobility and positions of users and completing user access authentication and certification; and the session management module is used for context management of user packet data protocols, and interacts with the GTP tunnel processing module to complete both configuration and modification of GTPU (GPRS Tunneling Protocol-User Plane) tunnel parameters. The invention has the advantages that the implementation of the PS domain system is simplified, an external interface of the PS domain system is kept unchanged, and the PS domain system is suitable for building a low-cost or miniature PS domain system.

The invention relates to a flat-open bottom hinged window, in particular to an interlocked and linked window which can be both flat-open and hinged downwards, comprising a window frame and a window sash, the window frame and the window sash are connected by an upper connecting rod component and a lower connecting rod component, the upper connecting rod component is connected with the top edges ofthe window frame and the window sash while the lower connecting rod component is connected with the lower edges of the window frame and the window sash, a lock bracket is arranged on the window frame, a connecting rod is arranged at the periphery of the window sash and a lock point is on a position corresponding to the lock bracket of the window frame, a handle is arranged on the window sash, thehandle is connected with the connecting rod at the periphery of the window sash, fastening and unfastening of the lock point and the lock bracket are realized by different angles and positions of thehandle, a lower suspension and rotary connecting component is arranged between the upper connecting rod component and the top edge of the window frame or between the upper connecting rod component and the top edge of the window sash, the lower connecting rod component is provided with a flat-open rotary locking device, on the window sash, a position of the window sash corresponding to the flat-open gyration locking device of the upper connecting rod component is provided with a lock catch. The flat-open bottom hinged window of the invention solves the problem that the window can be usually opened in a single way, thus offsetting the deficiencies of the prior art.

The invention discloses an automatic loading and unloading device for PCBA manufacturing and production. The automatic loading and unloading device for the PCBA manufacturing and production comprisesa frame, an electric cabinet box, an electric cabinet, a discharging mechanism, a suction hanging mechanism and a stacking mechanism, wherein one side of the frame is provided with the electric cabinet box, the other side of the frame is provided with the electric cabinet, one side of the top of the frame is provided with the suction hanging mechanism, the inner side of the frame is provided withthe discharging mechanism, and one side adjacent to the frame is provided with the stacking mechanism; According to the invention, the piled PCBA is regulated on the whole, so that the transportationcan be carried out directly through positioning and adsorption of the suction hanging mechanism in each transportation process, and the automation degree is high; meanwhile, according to different sizes and areas of different PCBA, the position of a sucking disc can be planned and adjusted before the suction hanging mechanism is used, and when the suction carrying is carried out, the stable conveying can be completed by using the least sucking disc; the PCBA on a transmission mechanism is well calibrated and positioned to ensure that the subsequent manufacturing process can be directly operated.

The invention relates to a device for assisting in adjusting the cutting nozzle angle of a gas cutter. The main structure of the device comprises a graduated base, a gliding block, an edging connecting plate, a transverse lever, a balance weight and a trolley. One end of the graduated base is arc-shaped; an arc-shaped groove is opened in the middle of the arc; the gliding block is arranged inside the arc-shaped groove in a sliding manner; scale is marked on the outer side of the arc-shaped groove on the graduated base; the cutting nozzle of the gas cutter is clamped on the gliding block; the top end of the cutting nozzle is positioned in the circle center position of the arc-shaped groove; the other end of the graduated base can be adjustably in the vertical direction and fixed close to the edging connecting plate; the edging connecting plated is fixed on one end of the transverse lever; the middle part of the transverse lever is fixed on the top of the trolley; the balance weight is fixed on the other end of the transverse lever; a connecting rod extends out of the bottom of the trolley; and a side wheel is fixed on the end part of the connecting rod and leaned against the edge of a steel plate to be cut. The device can cut a divided edge with a random angle, ensure the cutting point stays unchanged, and cut a divided edge with a remaining root cutting and a random angle on a thick plate.

The invention provides a method for injecting advertisements based on an Openwrt router. The method comprises the steps that 1, Web service is performed on a local terminal of the Openwrt router, and local storage of advertisement resource and rapid access inside a local area network are achieved; 2, injection of designated advertisement content inside the local area network is achieved, network firewall of the system is utilized for terminal redirection, unified management of access data of a user is achieved, designated tags are searched for and replacement operation is performed by analyzing HTML data returned by a website, the modified data are pushed to the user inside the local area network, and therefore injection of advertisement codes inside the webpage and display of advertisement content on a user browser inside the local area network can be achieved. All the advertisement resources are stored on the local router, modification and updating can be performed conveniently, meanwhile, the access speed is high, and the normal webpage browsing speed of the user is not affected basically. All the functions can be achieved on the Openwrt router, no extra equipment support is needed.

The invention relates to a power-assisted loading and unloading device for large, heavy and fragile parcels, comprising a mounting base, a conveying device arranged inside the mounting base, and a driving device connected with the conveying device. The conveying device comprises a first conveying section, a second conveying section and a third conveying section arranged inside the mounting base. The driving device comprises a pair of screws, motors arranged at the ends of the screws, a slider in threaded connection with the screws, and a pair of connecting rods hinged to the upper end of the slider. The connecting rods are arranged along a vertical plane, and the upper ends of the connecting rods are hinged to a cross bar below the second conveying section. The device has the advantage that the inclination angle of the second conveying section and the height of the third conveying section are changed by adjusting the inclination angle of the connecting rods, the inclination angle of the connecting rods can be adjusted just by changing the position of the bottom slider on the screws through forward / reverse rotation of the motors, the overall structure design is very reasonable, and adjustment is convenient.