115results about How to "Achieve mutual independence" patented technology

The invention discloses UI (User Interface) performance and service logic separation method and system. The method comprises the following steps of: correlating a UI object with a service data object by data binding; correlating the state of the UI object with the state of the service data object by state binding; correlating the action of the UI object with the action of the service data object by action binding; and carrying out united management on the data binding, the state binding and the action binding by logic model binding, therefore, the dynamic and indirect correlation between a UImodule and the service data object can be achieved. By adopting the invention, the mandatory dependence relation between a user interface and logic codes is relieved; the user interface design and the service logic programming can be developed in parallel as two completely independent works in the designing process; and the UI object and the service logic processing object are mutually independent to respectively support dynamic switching of UI views and change a logic processing unit in the software running process.

The invention discloses a desktop message notifying method and device. The method comprises the steps of receiving a message notifying request sent by an application program, wherein the message notifying request at least contains application program information and the message notification content; searching for an application icon corresponding to the application program information according to the message notifying request; establishing a notification prompt box corresponding to the application icon; loading the message notification content into the notification prompt box. By the adoption of the method, the message content can be displayed on a desktop, the message content displayed on the desktop is from the message notification content sent by the application program instead of being preset, the display logic of a message is not fixed in certain specific codes any more, mutual independence between logical processing and data sources is realized, and maintenance is facilitated.

The invention relates to a precise two-degree of freedom micro-displacement positioning device, belonging to a micrometric displacement operating system. In order to solve the defects of the prior art, including the problems that the positioning precision is low and interference between different degrees of freedom is large, the device comprises an objective table, a base plate, four nested parallelogram flexible link mechanisms with same shapes and structures, four groups of parallelogram guide mechanisms with same shapes and structures, a first piezoelectric actuator and a second piezoelectric actuator. The precise positioning device has the beneficial effects that a bridge type amplification mechanism is eliminated, a driving mode is changed, and the positioning precision is improved as the piezoelectric actuators are adopted for driving directly; two different flexible link mechanisms are adopted for the device, so as to realize the mutual independent movement of each degree of freedom; as no disturbance exists between the degrees of freedoms, the positioning precision is further improved; and furthermore, the whole structure is completely symmetric except for the piezoelectric actuators, thereby ensuring that the positioning precision of the whole device is not affected during change of the outside temperature conditions.

The invention discloses a method and system for storing a bytecode of a JCRE (Java card run time environment). The method comprises: converting a Java code used for realizing the JCRE into a class file; converting the class file into a cap file; converting the cap file into a bytecode and storing the bytecode into the Java card; and recording the storage position of the bytecode in a package registry. By the invention, because the Java code of the JCRE is stored according to the loading process of an application program, in the loading process, with the Java card of the JCRE and a COS code are not required to be compiled together, only the Java code of the JCRE is modified, and the COS code is not required to be modified, therefore mutual independence of the Java code of the JCRE and a COS in the bottom layer is achieved.

The invention discloses an azimuth device applicable to a vehicular photoelectric turntable. The azimuth device comprises a revolving shaft system, an azimuth shell, a rotary transformer and a torque motor. The revolving shaft system comprises an azimuth dead shaft, an azimuth moving shaft, an azimuth rotating adaptor disc and two groups of bearings, the azimuth dead shaft is connected with the azimuth moving shaft and the azimuth rotating adaptor disc respectively via a first bearing and a second bearing, the first bearing bears biaxial loads, the second bearing is larger in diameter and bears radial and tipping loads, and thereby the rotating disc type revolving shaft system borne by the internal and external bearings is formed. The revolving shaft system as well as the rotary transformer and the torque motor are respectively positioned on an upper side and a lower side of an annular transverse plate in the middle of the azimuth shell and are independent to one another. Furthermore, a comprehensive labyrinth felt collar sealing structure is adopted. The azimuth device has the advantages of simple structure, low height, light weight, good maintainability, excellent expansibility, strong environmental suitability and the like, mechanical characteristics and capabilities of resisting shock, vibration and large-angle inclination of the photoelectric turntable are effectively improved, and tracking precision of photoelectric tracking equipment is guaranteed.

The invention relates to transparent gateway equipment for connecting a wireless sensor network (WSN) and a time division-synchronization code division multiple access (TD-SCDMA) network based on an internet protocol version 6 (IPv6). The transparent gateway equipment comprises an advanced RISC machine 9 (ARM9) control unit and a WSN subnet access unit, wherein the ARM control unit mainly relates to an internet protocol (IP) layer and a media access control (MAC) layer of an open system interconnection (OSI) seven-layer model, is used for finishing protocol conversion, internetworking, route forwarding and the like, and adopts a transparent protocol conversion manner; the WSN subnet access unit mainly relates to a network layer, an MAC layer and a physical (PHY) layer of Institute of Electrical and Electronic Engineers 802.15.4c (IEEE802.15.4c), is used for networking and accessing of WSN subnet, collecting a subnet data and then transmitting the subnet data to the ARM9 control unit through a serial port. A jump channel technology is adopted in the MAC layer, a next time channel determinant mechanism is used and a channel quality value Pn is set so that the anti-interference performance of WSN equipment is improved and interfered channels are shielded; the TD-SCDMA network is accessed by utilizing a modem. The transparent gateway equipment solves the problem of convergence between the WSN and the TD-SCDMA common communication network, and the connection and data transmission between an IPv6-based WSN network and an IPv6-based cable network are realized.

The invention discloses a five-phase permanent magnet fault-tolerant motor with a magnetic congregating effect for an electric vehicle. An outer rotor is arranged on a stator outer ring, armature teeth and fault-tolerant teeth are uniformly distributed at intervals along the circumferential direction of the stator outer ring, permanent magnets are uniformly and radially embedded in the direction of the circumference in the outer rotor, a single-layer concentrated winding is wound on the armature teeth, radially opposite dipolar single-layer concentrated windings are serially connected to form one phase; total tooth quantity of the armature teeth and the fault-tolerant teeth is a multiple of 10 and is not equal to the quantity of permanent magnets, and the difference of the total tooth quantity of the armature teeth and the fault-tolerant teeth does not exceed + / -4; rotor grooves with same quantity as the permanent magnets are arranged on the outer rotor and positioned between each of the permanent magnets and the stator; and the width of the armature teeth is two times of that of the fault-tolerant teeth. The flux leakage of the permanent magnets is reduced while a magnetic-gathering effect is generated, the consumption of the permanent magnets is reduced, the motor cost is saved, the motor weight is reduced, and the reliability and the failure operation capacity of the motor is improved.

The invention discloses a safe double-frequency all-purpose card which comprises an encapsulation outer layer, a card base arranged in the encapsulation outer layer, a high-frequency electronic tag and an ultrahigh-frequency electronic tag. The high-frequency electronic tag and the ultrahigh-frequency electronic tag respectively comprise winding antennas and chips, and are arranged on the card base side by side at intervals. The safe double-frequency all-purpose card also comprises an isolated layer, and the isolated layer is arranged between the high-frequency electronic tag and the ultrahigh-frequency electronic tag which are arranged on the card base in an overlapping mode. The high-frequency electronic tag works in a high-frequency band and is an encrypted storage tag; a memory of the chip is provided with a plurality of sectors, each sector is divided into a data block and a cipher block, the data block is used for storing various data information, and the cipher block is used for storing cipher information. The ultrahigh-frequency electronic tag works in an ultrahigh frequency band. The invention has the advantages of accurate read with far and near distance, safety, multiple uses, and the like.

The invention relates to a support method for an underground goaf roof of a coal mine, and belongs to the technical field of mining techniques and environmental protection. The method comprises the following steps: getting the initial caving interval of an immediate roof of an underground working face of the coal mine and the initial fracture length of a main roof, as well as the lithology and the thickness of each of the immediate roof and the main roof; adopting an anchor rod, an anchor beam and an anchor rope to synchronously support the immediate roof of a goaf during the process of forming the goaf according to the initial caving interval of the immediate roof; determining the type and length of each of the anchor beam, the anchor rope and the anchor rod for constituting a support structure, as well as the inter-row spacing among the anchor beam, the anchor rope and the anchor rod; adopting steel beam columns or preformed reinforced concrete beam columns to support the main roof through the immediate roof of the goaf within the range that the unsupported back span of the goaf is less than the initial fracture length of the main roof; determining the type, length and inter-row spacing of the steel beam columns or the preformed reinforced concrete beam columns; and operating till the completion of the propulsion work on the working face. The method has the characteristics of simple method, easiness in operation and capabilities of controlling the roof and avoiding caving.

The invention discloses a traction system for a straddle monorail train and the straddle monorail train. The traction system comprises a traction mechanism and two anti-dive mechanisms, wherein the traction mechanism comprises a traction crossbar, two traction swing arms and two traction rods, the two traction swing arms are connected with the two ends of the traction crossbar respectively, the two traction rods are connected with the two traction swing arms respectively, and each traction rod is adapted to be connected with a frame; the two anti-dive mechanisms are located at the two sides ofthe traction system respectively in the length direction of the traction crossbar, each anti-dive mechanism comprises a torsion bar, two thrust rod bodies and two torsion bar swing arms, the two thrust rod bodies correspond to the two torsion bar swing arms one to one, one ends of the torsion bar swing arms are fixed on the torsion bar, and the other ends of the torsion bar swing arms are rotatably matched with the upper ends of the thrust rod bodies. The traction system for the straddle monorail train has the advantage that by arranging the anti-dive mechanisms, the pitch degree of a vehiclebody during braking can be reduced, so that running of the straddle monorail train is more stable.

The invention provides a data message processing method by a proxy server, which comprises the following steps that: the proxy server receives a first request message through a network card driver andprovides a user space for the proxy server; the user space analyzes the first request message through a user mode network protocol stack to obtain first request data, and provides the first request data to an agent process of the user space; the agent process generates second request data according to an agent strategy and sends the second request data to the user mode network protocol stack; andthe user mode network protocol stack encapsulates the second request data to obtain a second request message, and sends the second request message to a network card driver of a proxy server. According to the proxy server and the data message processing method thereof provided by the invention, the performance of the proxy server can be improved.

The invention provides an edge router for 6LoWPAN IPv4 Internet access and an access method, and provides a mechanism for accessing (IPv4) Internet on the basis of an IPv6 sensing network, and the mechanism is used for solving the interconnecting problem of the sensing network and the Internet. The edge router has the advantages that the network middleware mode is used for expanding the function of the 6LoWPAN edge router, so that the transparent gateway effect is achieved. An ARM9 (advanced RISC machine 9) control unit comprises a 6LoWPAN protocol stack and a TCP / IP (transmission control protocol / Internet protocol) stack, the heterogeneous protocol conversion, routing forwarding and the like are completed, in addition, a uNAT-PT (micro network address translation-protocol translation) mechanism is added to the network layer of the TCP / IP stack, and dynamic address mapping and protocol translation are adopted for realizing the conversion between an IPv4 data packet and an IPv6 data packet. The addition of new network equipment to the whole communication system and the modification of any network protocol stack are not needed, the fusion problem of the sensing network based on IPv6 and the Internet network can be solved, the system structure is simple, economic and convenient, and the seamless fusion between the heterogeneous networks and the service extension can be favorably accelerated.

The invention discloses an electric injection device for an injection molding machine. The electric injection device comprises a screw rod which is arranged in an injection front plate in a penetrating manner and a pin roller screw rod pair, wherein the pin roller screw rod pair comprises a nut and a pin roller screw rod arranged in an injection tail plate in the penetrating manner. The electric injection device is characterized in that the tail of an injection movable plate is fixedly connected with the nut; the injection movable plate is internally and rotatably provided with a pressure transmission shaft; the front end of the pressure transmission shaft is connected with a spline shaft; the other end of the spline shaft is connected with the screw rod; an injection middle plate is internally and rotatably provided with a transmission shaft; the transmission shaft is internally sleeved with a spline sleeve; a spline pair is composed of the spline sleeve and the spline shaft. With the adoption of the spline pair, the weight of a movement part in the injection process is lightened and the injection performance of the injection molding machine is improved.

The invention discloses a customizing method of launchers of a mobile terminal. The method includes the steps that resource files and configuration files required to be customized for at least two launchers are put in a corresponding resource file folder and a corresponding configuration file folder under a first file catalog respectively, wherein the files and the file folders of the launchers are different in name; corresponding encoding commands of the launchers are added, and the corresponding resource files and the corresponding configuration files of the launchers under a storage route are copied to a second file catalog; a storage route of the files of the launchers in the second file catalog is newly added to a common program information file; corresponding installation program APK files are generated and encoded for the files of the corresponding file folders of the launchers in the second file catalog respectively; corresponding installation program files are loaded according to the launchers selected by users, and the corresponding launchers run. The invention further provides a customizing system of the launchers of the mobile terminal.

The invention provides an urban turbojet fire vehicle. The fire vehicle comprises a vehicle chassis. An ultrafine dry powder tank is arranged on the vehicle chassis. The ultrafine dry powder tank is connected with a nitrogen cylinder pressure vessel. The nitrogen cylinder pressure vessel is connected with a water pump system. The water pump system is connected with a liquid tank assembly. The liquid tank assembly is connected with a turbojet engine jet assembly. A jet device for fire extinguishing comprises a jet device. The jet device is connected with a central revolved body through a connection pipe. The urban turbojet fire vehicle has large jet power, can jet out a mass flow of 'tail gas-water spray-ultrafine dry powder' three-phase jet flow fire extinguishing agents in a short time, and has excellent capabilities of controlling fire behavior, extinguishing big fires and cooling fire scenes by aeration from the three-dimensional space. The urban turbojet fire vehicle plays an important role in extinguishing high-rise building fire disasters, unattended dangerous chemical warehouse fire disasters, underground garage fire disasters, cable trench fire disasters, tunnel fire disasters, historic building fire disasters and steamship cabin fire disasters.

The invention provides a compartment for a tramcar and a tramcar. The compartment for the tramcar comprises a compartment body internally provided with seats and electric heating mechanisms; each the electric heating mechanism comprises a shell, electric heaters, a PLC and a fan, wherein an air channel cavity and a control cavity independent of each other are formed in the shell, an air inlet and an air outlet communicated with the air channel cavity are formed in the shell, the electric heaters and the fan are installed in the air channel cavity, the PLC is installed in the control cavity and is connected with the fan and the electric heaters, and the shell is detachably installed at the bottom of the corresponding seat. As the shells are installed under the seats, hot air output by the air outlets acts on the lower portion of the compartment first, and the riding comfort and experience of passengers are improved; as the shells are installed under the seats, the shells can be opened conveniently or taken out wholly to be maintained, and the maintenance difficulty of operators is lowered.

The invention provides a method and a system for storing user operation data and a receiving terminal of a digital television, which is applied to the technical field of the digital television. The method comprises the following steps: receiving the user operation data, wherein the user operation data is the data which is produced by user basically operating the receiving terminal of the digital television; temporarily caching the received user operation data in a memory cache space which is pre-applied; controlling the pre-built monitoring operation program to monitor the user operation datawhich is cached in the pre-applied memory cache space; and when the cache of the user operation data is detected in the memory cache space, controlling the monitoring operation program to extract theuser operation data in real time and restoring the data in a flash memory so that the user operation and the flash memory erasing are mutual independent, and the responding speed of the receiving terminal of the digital television operated by the users is improved.

The invention discloses a well completion production pipe string capable of mining at the lower part and injecting at the upper part and with an electric submersible pump. The well completion production pipe string comprises a bushing capable of mining at the lower part and well injecting at the upper part, an oil pipe arranged in the bushing and a downhole tool arranged on the oil pipe. The downhole tool comprises a downhole safety valve arranged at the upper part of the oil pipe and connected with a hydraulic control pipeline and a bushing layering packer arranged at the bottom of the oil pipe and provided with a sealing barrel. The bushing layering packer is provided with a positioning sealing part in a matched mode. An over-cable production packer with an air releasing valve, a workingbarrel and a sealed electric submersible pump system are connected between the downhole safety valve and the positioning sealing part in sequence from top to bottom. An upper reservoir and a lower reservoir of the bushing are separated through the bushing layering packer. A positioning sealing guiding shoe is arranged at the lower end part of the oil pipe. According to the well completion production pipe string, the facts that precise water injecting of the upper reservoir is achieved through an annulus access and pumping production or precise water injecting of the lower reservoir is achieved through a sealing system and a channel in the oil pipe are achieved, and the annulus access and the channel in the oil pipe are independent and noninteracting, so that the upper reservoir and the lower reservoir of one well are controlled independently, and the cost of oilfield development and maintenance is reduced.

The invention discloses a cigarette carton stacking device. The device comprises a hopper, a first material pushing mechanism, a stacking component and a second material pushing mechanism. A material carrying plate is arranged on the hopper, a containing groove extending in the height direction of the hopper is formed inside the hopper, a feed opening of the containing groove is formed at one side of the material carrying plate, and a discharge opening is formed in one side of the containing groove; the stacking component comprises a base plate, two clamping plates and a third driving mechanism, the base plate is arranged at the outer side of the discharge opening, and the two clamping plates are arranged at the two sides of the base plate. According to the cigarette carton stacking device, structures of all steps are independent of one another, cigarette carton superposing is not influenced by cigarette carton separating, cigarette carton separating and cigarette stacking are not influenced by cigarette carton superposing, cigarette carton superposing is not influenced by cigarette carton stacking, through the decomposition, work cycles of all the steps are greatly shortened, and production efficiency of an enterprise is improved.

The invention provides a data traffic limiting method and device, electronic equipment and a readable storage medium. The method comprises the steps: according to a target traffic access request, the target traffic access request carries a target user identity identifier; obtaining a target historical access record of the target user identity identifier according to the target user identity identifier, wherein the target historical access record is access data of the target user identity identifier in a set time window; and if it is determined that the number of access times of the target user identity identifier in a set time window exceeds a set threshold according to the target historical access record, rejecting the target traffic access request. According to the method, whether the access is allowed or not is determined by judging the access times of the target traffic access request of the target identity identifier in the set time window, so that a user can enjoy personal data independently, and traffic is limited for individuals at different time levels.

The invention discloses a progress updating method and device. The progress updating method comprises: obtaining state information of a shared memory group including at least two shared memory blocks, wherein each shared memory block stores key-value data of a progress; determining an invoking state of each shared memory block in the shared memory group according to the state information, thereby determining a first shared memory block in an to-be-invoked state and a second shared memory block in an uninvoked state; and when the first shared memory block is in the to-be-invoked state, updating the key-value data in the second shared memory block. According to the progress updating method and device, a problem that progress updating is not flexible due to a loading manner of the key-value data in the prior art is solved, and then an effect of improving the progress updating flexibility is achieved.

The invention discloses a vehicle power supply system and a power supply control method. The vehicle power supply system comprises a first power supply module, a second power supply module, a controlmodule and a power switch module, wherein the second power supply module is externally connected with a load through the power switch module, the first power supply module is externally connected withthe load, and the control module is connected with the load and the power switch module; the first power supply module is used for supplying power to the load; the control module is used for detecting the power supply condition of the first power supply module to the load, generating a switching signal based on the load power supply condition and sending the switching signal to the power switch module; the power switch module is used for determining a switching state of the power switch module based on the received switching signal; and the second power supply module is used for supplying power to the load based on the switching state of the power switch module. According to the embodiment of the invention, the control module detects the power supply conditions of the power supply modulesto the load, generates the switching signal according to the power supply conditions to control the state of the power switch modules, realizes mutual independence and no mutual influence of the twopower supply modules, and meets power supply requirements of automatic driving.

The invention discloses a template system for building a concrete structure at an earth-taking opening in a top-down construction method, and a construction method, relates to the technical field of top-down method construction of constructional engineering, and aims at a problem of slowing down the engineering progress because a template needs to be set at a conventional earth-taking opening layer by layer, and floor concrete needs to be poured layer by layer. The template system comprises at least two suspended steel beams which are disposed at the top layer and at two sides of the earth-taking opening. Two adjacent suspended steel beams are fixedly connected with each other through a connection beam. Each suspended steel beam is connected with at least two groups of hanging bars. A plurality of template assemblies which are arranged longitudinally in the earth-taking opening are sequentially connected with the hanging bars in a movable connection. The template assemblies abut against structural columns located at two sides of the template assemblies, and the upper surface of the template assembly is aligned with the lower surface of a corresponding floor slab. The construction method comprises the steps: installing the above system at the earth-taking opening; binding steel bars in the template assemblies at the same time, and obtaining a plurality of connection boards through pouring concrete, wherein each connection board is fixedly combined with the corresponding floor slab; removing the template system after the connection boards are hardened, and completing the complemented construction of the floor slabs.

The invention provides an intelligent archive cabinet management control system. The system comprises a data acquisition unit, a data storage unit, an analysis unit, a data management unit, an alarm unit and a display unit which are in signal connection with one another sequentially; the data acquisition unit comprises an archive data acquisition module and an environmental data acquisition module; the analysis unit includes an archive data analysis module and an environmental data analysis module; the data management unit includes an RFID management module, wherein the RFID management moduleincludes an intelligent access control management module, a vehicle quantity check management module, and a dedicated archive label management module; the alarm unit includes an isolation module and an emergency air protection module; and the display unit includes a three-dimensional scene display module and a real-time data display module. With the intelligent archive cabinet management control system adopted, not only can statistics be performed on document information, but also archive data can be managed in a unified manner, and therefore, relevant personnel can be facilitated to perform monitoring, consultation and statistics, and isolation protection can be realized when problems appear.

The invention relates to a new energy automobile simulation test system comprises a pressure supply module, a medium circulation module and a temperature adjustment module, wherein the pressure supplymodule includes a pressure control valve and adjusts the input pressure intensity through the pressure control valve; the medium circulation module includes a main capacity box, a liquid storage tank, a main path flow control module and a plurality of branch path flow control modules, the main capacity box is connected to the pressure control valve and is connected to the liquid storage tank, themain path flow control module is connected to the liquid storage tank, two ends of the branch path flow control module are respectively connected to the main path flow control module and the liquid storage tank, the branch path flow control modules automatically adjust the flow of branch paths respectively, and the main path flow control module adjusts the main path flow according to the feedbackof the branch path flow control modules; and the temperature adjustment module is connected with the main path flow control module and adjusts the temperature of a test medium in the main path flow control module.

The invention discloses a semiconductor structure and a forming method thereof, and the semiconductor structure comprises a first device structure which comprises a first substrate and a first device formed on the first substrate, the first device comprises a first channel layer structure located on the first substrate, a first device gate structure crossing the first channel layer structure, and first source-drain doped regions located in the first channel layer structure on the two sides of the first device gate structure; the second device structure is positioned on the front surface of the first device structure and comprises a second substrate positioned on the first device structure and a second device formed on the second substrate; the second device comprises a second channel layer structure located on the second substrate, a second device gate structure crossing the second channel layer structure, and second source-drain doped regions located in the second channel layer structure on the two sides of the second device gate structure; projections of the second channel layer structure and the first channel layer structure on the first substrate are not vertically intersected. According to the invention, electrical leading-out of the first device can be realized.

The invention discloses a tank connection liquid extracting device. As an internal pipe is arranged in a tank body, a liquid extracting pipe and an intake pipe only need to be controlled to move for a shorter path in use so as to communicate with the internal pipe and to realize the air pressure balance, a long pipe is not needed to insert from the upper side of the tank body to the bottom of the tank body, the structure is simpler, the assembly is more convenient, and the production cost is largely reduced; and after the liquid extracting pipe is communicated with the internal pipe, a sealing flange and a lower flange are butted and sealed to realize mutual independence of an intake groove and a liquid extracting hole, and an upper flange and a butting piece are butted and sealed to realize sealing with the external, so that the overall sealing performance is more excellent. An assembly method of the tank connection liquid extracting device is convenient to assemble, and improves the working efficiency.

The invention discloses an elliptic curve cipher chip device and system, and a data cache control method, and belongs to the field of information security, an encryption / decryption chip technology, a digital signature and signature verification. The device comprises an elliptic curve cipher chip, and an FPGA connected with the elliptic curve cipher chip. Registers in the FPGA comprise a read synch bit register group and a write synch bit register group. The FPGA comprises a first double-port SRAM for reading a cache and a second double-port SRAM for writing the cache. The read synch bit register group and the write synch bit register group synchronously mark the read cache and the write cache. The FPGA is also connected with a PCI interface which is used for being connected with a PC. Compared with the prior art, the device, the system and the method have the advantages that mass data transmission is realized, and a data throughput rate is improved.

The invention discloses a method for realizing data cross-platform sharing by configuring a key pair in the technical field of data cross-platform sharing. The sharing platform encrypts the second-level key through the first-level key, generates a shared encryption key, encrypts the shared data through the secondary key, and generates shared encrypted files; the shared platform sends a private keyand a main key used by the data sharing request to the key management server; the private key of the shared platform are paired with the secondary key by the key management server; the key managementserver decrypts the second-level key to obtain a first-level key, compares the first-level secret key with the main key; and if not, the key management server decrypts the shared data, compresses thedecrypted shared data and then transmits the compressed shared data to the shared platform, so that different platforms realize cross-platform data sharing of the shared data by configuring key pairs, mutual independence of data sharing among different platforms can be ensured, and relatively high data sharing security is achieved.