254results about How to "To achieve the purpose of protection" patented technology

The invention provides an online information protection method and an online information protection device, relating to an internet technology. The online information protection method comprises the steps of: acquiring identity information of a user when the user logs in a client; generating a dynamic watermark according to the identity information; acquiring window information of the client; acquiring a display position of the dynamic watermark in a window of the client according to the window information; and displaying the dynamic watermark in the window of the client. The method and the device have the advantages that the purpose of protecting online information in the window of the client of an online system can be achieved, a user can trace behaviors of acquiring the online information in abnormally manners such as screen capture and photo taking, so that the safety audit to the online information by enterprises can be enhanced, leakage events of the online information can be reduced, and furthermore, economic losses and negative social impacts brought by such events to the enterprises can be avoided.

The invention provides a waste foundry sand regeneration method, belongs to the field of environment-friendly regeneration, and particularly relates to a recovery method for waste casting materials. According to the waste foundry sand regeneration method, procedures are successive and reasonable, operation is easy and convenient, and the regeneration rate is high. The waste foundry sand regeneration method comprises the steps of (1) breaking of waste foundry sand, (2) roasting, (3) wet stirring, (4) grinding, and (5) winnowing and magnetic separation. According to the waste foundry sand regeneration method, the heating procedure, the wet stirring procedure and the mechanical grinding procedure are more successive and reasonable, sand reclaimed through the method is high in quality, the regeneration rate is high, and thus, the waste foundry sand regeneration method has good technical feasibility and applicability; and by adoption of the waste foundry sand regeneration method, no poisonous and harmful waste is discharged in the treatment process, zero emission is achieved, and the purpose of environmental protection is achieved.

The invention discloses a method and a device of local heat treatment for thin-walled tubular parts. A high-frequency induction heater is used as a heating source. The inner diameter of a high-frequency induction ring of the high-frequency induction heater is 5-30mm larger than the outer diameter of a heating-expected area of the thin-walled tubular part. The high-frequency induction ring with the heating power is capable of heating the heating-expected area of the thin-walled tubular part to required heating temperature in 10-60 seconds. When the thin-walled tubular part is subjected to local heat treatment, an auxiliary heating sleeve tool is used to sleeve the local heat area to be subjected to heat treatment. A gap between the inner surface of the heating sleeve tool and the sleeved position of the thin-walled tubular part is larger than 0.1mm and smaller than 1mm. The wall thickness of the heating sleeve tool is 2-10mm. The thin-walled tubular part is rotated around a center line of the high-frequency induction ring. The method and the method have the advantages that the heat area can be controlled effectively, heating is even, product quality is high and stable, operation is simple, manufacturing and using costs are low, and the method and the device are applicable to batch production, and the like.

The invention discloses an automatic identity recognition and data remote control global positioning system (GPS)-positioned anti-theft mobile phone and an implementation mode thereof. The anti-theft mobile phone mainly comprises a baseband processor, radio frequency, near field communication (NFC) and a GPS, wherein the baseband processor and the radio frequency complete basic communication functions of the mobile phone; the NFC has an identity recognition function; and the GPS completes acquisition of position coordinate information of the mobile phone. Personal data information in the mobile phone can be effectively protected. Once the mobile phone is stolen, the position coordinate information of the stolen mobile phone can be transmitted to a preset family number through a GPS positioning module, and then the position information is transmitted to a public security organ. Since the stolen mobile phone is retrieved in a legal and formal way, the loss of the owner of the mobile phone is reduced to the maximum extent and social security and harmony are protected.

The present invention refers to an embedded controller and updating firmware method. It contains said embedded controller being microprocessor type and with one firmware memory in notebook computer; said embedded controller having master / slave unit; before computer just powering on or I / O Controller Hub (ICH) action, said embedded controller changing embedded controller from slave unit into master device, this moment embedded controller capable of downloading part or whole firmware routine code from BIOS memory through LPC / SPI bus, through embedded type firmware internal circuit programming function to make part or all firmware updating, after updating embedded controller firmware, switching master device into slave unit, switching on notebook computer power supply or making I / O Controller Hub action.

The invention relates to an intelligent door lock control system. In the intelligent door lock control system, a communication module is arranged for receiving an operation instruction sent by a user terminal and a master control module is arranged for reading the state information of a door lock and sending the state information to the user terminal through the communication module and displaying, so that the purpose of protecting the door lock is achieved; a display screen need not be arranged on the door lock; a user can read the state information of the door lock at any time and any where through a terminal (such as, a mobile phone); the menu setting and the unlocking operation for the door lock can be realized through the terminal, so that the structure is saved, the safety of the door lock is greatly increased, and meanwhile, the door lock control system can reduce the energy consumption, can lower the cost and is beneficial to energy conservation and emission reduction.

The invention relates to a high-temperature anti-oxidation coating for a steel billet of plain carbon steel and a preparation method of the high-temperature anti-oxidation coating. The technical scheme is as follows: a component A and a component B which are sub-packaged are mixed according to the mass ratio of (0.8-2):1 and are mechanically stirred when the high-temperature anti-oxidation coating is used, wherein the component A is prepared from the chemical components in percentage by mass: 20-35% of alumina powder, 20-30% of silicon dioxide powder, 15-25% of magnesia powder, 5-15% of calcium oxide powder, 5-10% of zirconium dioxide powder, 2-5% of sodium carbonate powder, 2-5% of potassium carbonate powder, 2-5% of iron oxide powder and 1-5% of aluminum powder; and the component B is prepared from the chemical components in percentage by mass: 1-5% of (CH2O)n, 4-10% of (C12H22O11)n, 5-15% of (C6H10O5)n, 0.5-2% of polyvinyl alcohol, 0.1-1% of sodium carboxymethylcellulose, 0.1-0.8% of hydroxyethyl cellulose and the balance of water. The high-temperature anti-oxidation coating has the characteristics of good anti-oxidation effect, high applicable temperature, self-falling capacity, safety, environment friendliness and low cost.

The invention relates to a kind of road marking resin, which particularly relates to the road marking resin lipid-modified by the high-quality rosin to replace petroleum resin, acrylic or chlorinated rubber for solving the pollution problem. The material has excellent mobility of construction as well as anti-shed, light resistance, wear resistance, oxidation resistance, water-resistance, pressure resistance, filthy resistance, weather resistance and chemical resistance.

The invention relates to a system and a method for protecting electronic intelligent door locks and fingerprint locks. The system and the method have the advantages that lock protection setting transmitted by user terminals is received by a communication module and is verified by a master control module, so that the purpose of protecting the door locks can be achieved, and door lock protection modes can be switched over via the user terminals at any time in any places; fingerprint unlocking operation can be forbidden via the terminals, accordingly, door lock protection modes are difficult to crack in preset modes by criminals, and the safety of the door locks can be greatly enhanced.

The invention discloses an automatic-adjusting tree supporting frame which comprises a base and at least three sets of supporting components movably arranged on the base. Each supporting component comprises a fixing mechanism used for fixing a trunk, and a supporting mechanism used for supporting the trunk and supportive of automatic-adjusting, each fixing mechanism and the corresponding supporting mechanism are connected with each other with the help of a connecting mechanism, each fixing mechanism comprises a fixing support matched with the outer surface of the trunk, and each supporting mechanism comprises a supporting rod connecting the corresponding fixing support with the base, and a hydraulic adjusting rod connected with the supporting rod and adjustable in length. Automatic adjusting of the tree supporting frame is realized through a deformable structure, and the tree supporting frame is enabled to adapt to growing of a tree and performs adjusting automatically without causing any constraint to growing of the tree, so that the objective of protecting the tree is truly realized. In addition, the automatic-adjusting tree supporting frame is simple in structure, easy to assemble, high in practicability and wide in applicable range.

The invention discloses a Method and device for removing SO2 in smoke gas by pyrolusite slurry and resource utilization. Pyrolusite is subjected to wet milling with water added by a ball mill and pH value regulation to prepare pyrolusite slurry; the pyrolusite slurry performs inverse contact reaction with SO2-containing smoke gas in a desulfurizing tower for desulfurization; the smoke gas is subjected to defogging, and then enters the next work procedure; the ore slurry circulation flow process comprises the steps of vacuum filtering, filtering after pH regulation by lime, pH regulation of filter liquid and precipitation in a precipitation pool, vacuum evaporative crystallization and solid-liquid separation, and filter liquid carbonization solid-liquid separation. The pyrolusite slurry is used for removing SO2 in the smoke gas; meanwhile, the SO2 takes oxidation-reduction reaction with manganese dioxide in the pyrolusite to generate manganous sulfate; through the processes of purification, evaporative crystallization, mother liquid carbonization and the like, manganese sulfate monohydrate and manganese carbonate with high added values can be obtained; the SO2 in the smoke gas is controlled; the secondary pollution of the smoke gas is prevented; meanwhile, high-added-value products are generated; meanwhile, the SO2 control problem is solved; the economic benefits are obtained.

The invention introduces an emulator for protecting a chip firmware program and a method thereof and relates to the technical field of chip simulation. The emulator comprises an emulator control module and emulator hardware. The emulator hardware comprises a chip function debugging module, a register, a signal generation stopping module and a chip function module. The register is arranged on the emulator control module through the chip function debugging module. The CPU stops or runs after the control chip function module generates soft resetting. The method for protecting the chip firmware program includes that the emulator control module start the soft resetting stopping function of the emulator hardware, operates a soft resetting command in the chip firmware program, and automatically stops at the head address of the user program area, the chip firmware program on the user debugging interface cannot be visited at the moment, and the aim of protection is achieved. The emulator has the function of automatically switching to the user program area and protecting the chip firmware program, has the advantages of being simple in design and convenient to use, and provides a code protection scheme for the chip emulator with the safety requirement.

The invention relates to a novel inflatable upper-air protective umbrella which is a safe messenger for upper-air operation. The upper-air operation has no safe and reliable protective measures all long, and the naissance of the product provides security guarantee for the upper-air operation. The novel inflatable upper-air protective umbrella comprises an inflating umbrella cover (1), an umbrella belt (2), a safety belt (3), a seat cushion waistband (4), an inflatable vest (5), an inflatable safety helmet (6), an inflator pump (7) and a self-carried inflating bag (8). The novel inflatable upper-air protective umbrella has the advantages of safety, reliability, portability, economy, practicability, small investment and quick effect, can be used for ensuring the safety of upper-air operators, and safety is maximal economic benefit, therefore social benefit is certainly outstanding. The invention has the following using methods and matters needing attention: when the novel inflatable upper-air protective umbrella is in use, whether air is leaked or not is must be firstly checked; frequent check is needed, and the umbrella needs to be patched in time when air leakage is discovered; when the novel inflatable upper-air protective umbrella is in use, the safety belt (3) and the seat cushion waistband (4) must be well fastened; and when the novel inflatable upper-air protective umbrella is stored, insect prevention, rat prevention and corrosion prevention are needed.

The invention discloses a spring and grid combined cushion seismic reduction device applicable to emergency rescue and disaster relief steel shed tunnels. The spring and grid combined cushion seismicreduction device comprises a grid layer and a spring cushion layer. The grid layer and the spring cushion layer are sequentially laid on the top of a steel shed tunnel frame from bottom to top; the grid layer comprises N layers of grids, the grids are sequentially overlaid, and the N is a positive integer larger than or equal to 1; the spring cushion layer sequentially comprises a first steel plate layer, a plurality of columnar springs and a second steel plate layer from bottom to top. The spring and grid combined cushion seismic reduction device has the advantages that the spring and grid combined cushion seismic reduction device is a structural device with excellent steel shed tunnel cushion performance, construction speediness and high topographic condition adaptability, and is favorable for upgrading the protection levels of the shed tunnels, and the time can be gained for emergency rescue and disaster relief.

The invention relates to a wall grinding machine, which comprises a connecting rod, a casing and a mounting frame. A control switch is arranged on the outside of the connecting rod, and a handle is nested outside the lower end of the connecting rod. The casing is arranged on the upper end of the connecting rod, and the casing The inside is connected to the motor through a shock absorbing mechanism, the outside of the motor is connected to the dust cover through an adjustment mechanism, and balls are installed on one side of the dust cover, the side of the motor is connected to a main shaft, and the outside of the main shaft is passed through a grinding sheet The tightening mechanism is connected with the grinding sheet, the middle part of the dust cover is provided with a bearing, the outer side of the dust suction port is connected with the connecting pipe through a bellows, and one end of the connecting pipe is connected with a vacuum cleaner, and the mounting frame is arranged on the upper end of the shell. In addition, a corrugated pipe runs through the inside of the installation frame, and a filter screen is arranged inside the vacuum cleaner, and a dust accumulation box is installed at the lower end of the filter screen. The wall grinding machine is provided with a shock-absorbing mechanism, so that the device can play a certain buffering role during use.

The invention relates to the technical field of sand mold casting and in particular to a method for recycling sand mold casting waste sand. The method comprises the specific steps that caked waste sand on a sieve is broken into fine sand; then, the fine sand and an acid solution are mixed sufficiently through spraying; the fine sand mixed sufficiently is ground through a grinding machine; separation is carried out through a centrifugal machine, solids obtained through centrifugal processing are dried until the moisture content is equal to or lower than 0.5-1%; and the dried fine sand is subjected to air screening and magnetic screening to remove impurities in the fine sand, and a finished product is obtained. By means of the method, emission of waste water and waste gas in the production process is reduced, waste sand is recycled, and economic benefits are improved.

The invention relates to a reversible magnetic starter for an underground coal mine electric power driving multiple rotary executing mechanism. A test / working mode option switch and three buttons used for starting, closing and stopping respectively are arranged on a panel of a flameproof enclosure; a display unit of the reversible magnetic starter is a touch screen, an operation unit comprises the test / working mode option switch and the starting, closing and stopping buttons, and a signal collecting and processing unit comprises a signal processing plate and an analog-to-digital conversion module; and the units are connected with a programmable logic controller of a control unit respectively. The reversible magnetic starter has high reliability and high anti-interference capability, is used for the controls of the underground coal mine electric power driving multiple rotary executing mechanism such as local / remote control, starting, closing, stoping, self-hold / instantaneous acting, journey limiting, and torque limit control, performs comprehensive and real-time protection to prevent the faults of an unclosed contact point of a contactor, an overloaded electric current, a short-circuited electric current, lacking phase, under / over voltage, an earth leakage lockout resistance; and meanwhile, the touch screen can display, record, store, and check the working state or fault type and parameters.

The invention discloses a multi-ion adsorption material prepared by inorganic ion doping and large-steric-hindrance organic modification. A Fe-MCM-41 adsorption material is synthesized from hexadecyl trimethyl ammonium bromide, ethyl orthosilicate and inorganic iron as main raw materials by adopting a direct synthesis process, a framework is doped with iron ions, hydroxyls in the framework are activated to generate a relatively strong acid site, and the surface of the Fe-MCM-41 adsorption material is grafted with an organic amine molecule through a silane coupling agent and a large-steric-hindrance organic functional group to generate a base site, so that the multi-ion adsorption material is prepared. The multi-ion adsorption material can avoid spontaneous recombination of the acid and base sites due to a steric hindrance effect generated by the introduced large-steric-hindrance organic functional group, realizes coexistence of the acid and base sites, solves difficult problems of difficult coexistence of acid and base of a same matrix and non simultaneous adsorption of negative and positive ions by a general adsorption material, and can simultaneously and efficiently adsorb negative and positive mixed pollution ions in wastewater and purify water resources, and the preparation method of the material is simple, so that the material has promotion and application values.

The invention relates to a harmonic impedance matrix-based anti-islanding identification method and system of a wind power plant. The island protection of the wind power plant is achieved by acquiring a voltage and a current of a grid-connected point of the wind power plant, analyzing the each harmonic impedance size, calculating a mode value of a harmonic impedance matrix and judging whether an island occurs in the wind power plant. The island is identified according to change of circuit impedance at the grid-connected point before and after disconnection of a power grid, and system impedance is equivalent to impedance of the wind power plant and the impedance of the power grid which are connected in parallel; since a main power grid approximates to an ideal voltage source, the system impedance is small; and after the island occurs, the main power grid is disconnected, the system impedance is equal to impedance of a power station system, the value of the system impedance is generally larger than the impedance during grid connection, so that an island state is identified.

The invention relates to a use of a lysine-specific demethylase 1 (LSD1) inhibitor. Zebra fish and mouse are used as model animals and used for building hair cell damage and protection research animal models. A research result proves that through utilization of the LSD1 inhibitor on the whole body and round window local part, a histone H3K4 dimethylation expression level is substantially improved and cochlear hair cell Cleaved Caspase-3 expression is substantially reduced so that hair cell damage is reduced and hearing protection is realized and thus it is shown that the LSD1 inhibitor can produce hearing protection in sensorineural deafness treatment. The use provides a novel approach for searching, preventing and treating sensorineural deafness and has a clinical application value.

The invention belongs to the technical field of medical protection, and particularly relates to an intelligent medical protection lead curtain system. The medical protection lead curtain system is characterized by comprising tubular motors, touch sensors, a control system, a lead curtain support, a running guide rail and a combined lead curtain; the medical protection lead curtain system comprises a plurality of lead curtains, the lead curtains are connected onto the tubular motors through sleeves, the touch sensors are mounted at the lower ends of the lead curtains respectively, and the position of each lead curtain can be controlled by the control system through feedback signals of the touch sensors; the intelligent medical protection lead curtain system provided by the invention aims to solve the problems, in a conventional medical protection lead curtain system, that the mounting and the adjusting are difficult, the occupied space is large, and shielding protection for special shapes cannot be achieved, according to the intelligent medical protection lead curtain system, the lifting of the lead curtains can be controlled through the motor automatically, the positions of the lead curtains are sensed through the touch sensors, and shielding protection for complex and special shapes can be achieved through the combined way of the lead curtain.

The invention provides a material conveying device for building construction. The device comprises a supporting plate and moving wheels; the moving wheels are fixedly connected to the four corners ofthe lower end face of the supporting plate. A push plate is fixedly connected to the left edge of the upper end face of the supporting plate. A sliding block is connected into the push plate in a sliding manner; the right side of the sliding block is fixedly connected with a hook; the left side of the sliding block is connected with a pull rope; the pull rope is wound on a rotating rod; the rotating rod is connected to the left side surface of the push plate through a lug plate. Compared with the prior art, the material conveying device has the following beneficial effects: with the hook and the pull rope, winding and pressing of materials are achieved, and the conveying stability of the materials is improved; the purpose of protecting the materials is achieved through unfolding and movingof a front stop lever and a rear stop lever, so that the material scattering probability is reduced; and the application range is enlarged through the contraction and folding design, and the use functionality is wide.

The invention discloses graphene nanomaterial-containing tree trunk injection liquid for preventing and treating citrus psylla. The graphene nanomaterial-containing tree trunk injection liquid is prepared from the following raw materials in percentage by mass: 0.2 to 20.0 percent of an active component and 0.1 to 30 percent of a graphene nanomaterial, wherein a weight ratio of the active componentto the graphene nanomaterial is (100:10) to (100:500); the pesticide active component comprises a nicotine insecticide. The graphene nanomaterial-containing tree trunk injection liquid prepared by the invention is used for injecting medicine into tree trunks, the active component has very good vertical conductivity on a citrus wood layer after the graphene nanomaterial-containing tree trunk injection liquid is injected to the citrus wood layer, and the active component can also be easily conducted to a citrus phloem part in aspect of horizontal conduction so as to be conducted to tender tipsand roots, so that the effect of preventing and treating the citrus psylla can be achieved; the graphene nanomaterial-containing tree trunk injection liquid prepared by the invention is used for preventing and treating the citrus psylla, and the corrective control effect can be up to 93.4 percent after 40 days, so that the purpose of preventing and treating citrus huanglongbing can be achieved.

The invention discloses a protection construction platform for a high-rise building and belongs to the technical field of building protection auxiliary equipment design and manufacture. The protection construction platform for the high-rise building is provided, and the protection work of the whole high-rise building can be completed after one time of assembly. The protection construction platform comprises a framework, a platform assembly and a protection system, wherein the protection system is connected to the outer side of the high-rise building in a shielding mode in the circumferential direction of the high-rise building needing to be constructed through the framework. The protection construction platform further comprises a lifting and supporting system and a power device, wherein the protection construction platform and the framework are supported to an outer wall of the high-rise building in the maintaining and constructing process through the power device and the lifting and supporting system in a matched mode, and the protection construction platform ascends and descends on the outer wall of the high-rise building in the vertical direction according to requirements under the driving of the power device through the framework and the lifting and supporting system.

The invention discloses a protecting circuit for preventing continuous damage and an implementation method. The protecting circuit comprises a watchdog chip, a protected circuit as well as a counter chip, an MOS tube and a resistor capacitor, wherein MAX706 is adopted as the watchdog chip; an integrated counter 74161 is adopted as the counter chip; a RESET end of the watchdog chip is connected with a RESET end of a single chip microcomputer of the protected circuit; a PC end of the integrated counter 74161 is connected with the RESET end of the watchdog chip. By changing the mode of tube foot connection or by adopting a selected welding resistance mode, the times of resetting a watchdog are limited, and the protected circuit is powered off when the times of resetting the watchdog are achieved. The protecting circuit has the benefits that the protecting circuit which is continuously damaged is prevented from adding counter chips, MOS tubes, a plurality of resistors and capacitors into a conventional ordinary watchdog circuit, a manual reset implementation mode of the conventional circuit is changed, the ordinary reset function of the watchdog is not affected when being watched, the situation that the damage is expanded as a fault circuit is continuously powered is avoided, a PCB is prevented from being burn, and thus fire hazard is avoided.

The invention relates to a high-voltage ESD (Electronic Static Discharge) protection circuit which comprises a power supply port, an NMOS (N-channel Metal Oxide Semiconductor) discharge tube, an ESD detection resistor and a pull-down resistor, and a drain of the NMOS discharge tube is connected with the power supply port and the ESD detection resistor. The high-voltage ESD protection circuit is characterized in that the drain and a grid of the NMOS discharge tube are respectively connected with a drain and a source of an NMOS pull-up tube, and a grid of the NMOS pull-up tube is earthed after being connected with the pull-down resistor. Compared with the traditional ESD protection circuit, the NMOS pull-up tube is introduced as the pull-up tube in place of a detection capacitor Ca, parasitic capacitors Cgd and Cgs of the NMOS pull-up tube per se are used for conducting the NMOS discharge tube, and the purpose of ESD protection is realized.

The invention relates to the technical field of immunoassay analysis equipment, in particular to a communication electronic internal element protection device with an auxiliary heat dissipation structure. The device comprises a protection shell, a heat dissipation mechanism and a moving mechanism, wherein the heat dissipation mechanism and the moving mechanism are arranged in the protection shell,the heat dissipation mechanism is installed on the moving mechanism, and the moving mechanism is used for driving the heat dissipation mechanism to move up and down in a reciprocating mode. The heatdissipation mechanism comprises a planet gear set and a first motor, the planet gear set comprises an inner gear ring, a sun gear and a plurality of planet gears, the planet gears are meshed between the inner gear ring and the sun gear in a linkage mode, a center shaft of the sun gear is fixedly connected with an output shaft of the first motor, and the moving mechanism is arranged between the first motor and the bottom wall of the protection shell. A turbofan is arranged at the top of the sun gear, and an axial fan is arranged at the top of each planet gear. A plurality of air outlet channelsare formed in the side wall of the protection shell. According to the invention, efficient and uniform heat dissipation of communication electronic internal components is realized, and heat accumulation below an air inlet duct is effectively avoided.

The invention discloses a high voltage static generator, which is characterized by comprising a power supply control circuit, a rectification voltage stabilizing circuit, a high-frequency converting circuit, a boosting rectification circuit, an overload alarming protective circuit and an output measuring circuit. A 220V alternative-current municipal power is converted to a high-frequency pulse power source through the power supply control circuit, the rectification voltage stabilizing circuit and the high-frequency converting circuit, and then the high-frequency pulse power source is converted to a direct-current high-voltage static power to be outputted to a load through the boosting rectification circuit. The high voltage static generator has the characteristics of simplicity and clarity in circuits, continuity and adjustability of voltage, automatic protection and alarming for overload, safety and reliability in use and the like. The high voltage static generator is suitable for static spray coating, static seed treatment, static flocking and the like.

The invention belongs to the field of supply chain logistics, and particularly relates to a supply chain logistics data security sharing method based on a block chain, which comprises the following steps: initializing policy attribute-based encryption, and generating a user certificate and a user decryption key with user attributes by a FabricCA center; encrypting the supply chain logistics data at a specified time and an access strategy of a specified area, and then packaging and uploading the encrypted supply chain logistics data to a block chain; and after the data is successfully uploaded,enabling the data requester to request the wanted data according to the address, limiting the identity of the data requester by verifying whether the sharing request meets the constraint condition ornot, if verification is passed, performing data sharing, and otherwise, refusing the access request. According to the method, the complete supply chain logistics information can be effectively protected, so that the privacy of the supply chain logistics data of the user is realized.