450results about How to "Reduce the difficulty of implementation" patented technology

The invention discloses a multi-angle video automatic editing method based on content defect detection, and relates to the technical field of video processing. According to the method, multi-track video materials are accurately synchronized to the same time axis through cross-correlation calculation, and flaws in video content are analyzed frame by frame and classified and identified by applying fuzzy detection of a dynamic threshold and combining jitter detection and shielding detection of rotation and displacement estimation. And according to a detection result, an editing scheme is intelligently generated through a dynamic programming algorithm of state transition optimization, high-quality fragments are selected, defective parts are automatically removed, the continuity and multi-view diversity of video contents are reserved, and finally, a high-quality recorded video is generated through integration. The video editing efficiency is greatly improved, the manual intervention requirement is reduced, meanwhile, it is ensured that the quality of the output video meets the professional application requirement, and the method is suitable for multiple scenes such as conference recording, educational training and multi-angle video production and has high practical value and popularization prospects.

The invention discloses a direct current control method and system for improving transient stability of a grid-connected converter, and the method comprises the steps: judging whether a power angle out-of-limit-based fault judgment module or a voltage out-of-limit-based fault judgment module has a voltage drop or phase jump fault or not when any one module judges that a power grid has a voltage drop or phase jump fault; processing an angular velocity control signal of a synchronous control link through a direct current port transient energy correction module, and performing temporary storage unbalanced power-oriented lifting and inertia correction-oriented lifting on a direct current voltage reference value; the voltage value of the direct-current port capacitor is compared with a direct-current voltage reference value, and is processed by the steady-state direct-current voltage control module to obtain a direct-current voltage control reference value; the output data of the converter at the common coupling point obtains a synchronous control signal according to a synchronous control link; and based on the synchronous control signal, an internal potential reference value is obtained according to an internal potential control link, and then a converter driving signal is generated. According to the invention, the stability problem of the grid-connected converter when the power grid has a transient fault can be effectively solved.

The invention discloses a multi-mode wearable humanoid robot data acquisition and remote operation system. The system comprises a wearable device which acquires real human body data; the environment sensing equipment collects real environment data; the communication equipment performs multi-mode data transmission; the storage device stores data acquired by the wearable device and the environment sensing device, and performs data writing and data reading; the computing device receives the data collected by the wearable device and the environment sensing device, carries out calculation, maps the human body data into humanoid robot data, and generates a control instruction of the humanoid robot; and the humanoid robot body equipment executes a corresponding action according to the control instruction. Therefore, through the human body posture data, the reasonability of the posture and action of the humanoid robot is improved, the completion rate of similar task learning of the humanoid robot in a complex scene is improved, mature industrial equipment is adopted, the cost is low, the organization and implementation difficulty is small, and the method has remarkable advantages in the aspects of data collection quality and benefits.

The invention relates to the technical field of safety circuits, and provides a diagnosis method and circuit of a digital-to-analog conversion circuit, equipment and a medium. According to the method, two independent AI acquisition modules are arranged to respectively acquire analog quantity signals acquired at the same target measurement point, the acquired analog quantity signals are converted into digital signals through a built-in ADC circuit, and then the two paths of digital signals are transmitted to a safety logic module to be compared and judged; when the difference value of the two paths of digital signals is smaller than the preset safety threshold value, it is determined that the ADC circuit passes the diagnosis, and when the difference value of the two paths of digital signals is larger than or equal to the preset safety threshold value, it is determined that the ADC circuit does not pass the diagnosis, and therefore it is not needed to independently configure a DAC circuit for the ADC circuit in each AI collection module; the implementation difficulty and the implementation cost of the diagnosis circuit are reduced, the development period of the diagnosis circuit is shortened, and the diagnosis efficiency is improved.

The invention provides a millimeter wave regular modular sparse active phased-array antenna which comprises a comprehensive mother board which is provided with a radio frequency power synthesis / distribution network, a component control network and a component power supply network. The plurality of sparse antenna modules are arranged above the comprehensive mother board; the chip assembly is arranged below the comprehensive mother board; the digital and power supply unit is arranged on the side, away from the comprehensive mother board, of the chip assembly and comprises a phased array wave control module and a power supply module, and the phased array wave control module is connected with the system master control and assembly control network; the power supply module is connected with a system power supply and a power supply network; the sparse antenna module and the comprehensive mother board are vertically stacked, and vertical interconnection is realized through a plurality of layers of PCBs; the integrated mother board is vertically connected with the digital and power supply unit through a plug-in low-frequency connector. According to the invention, decoupling of the integrated antenna can be realized; the sparse antenna module adopts sparse active feed, so that the number of array active channels and the heat flux density can be effectively reduced, and the system cost is effectively reduced.

The invention relates to the technical field of MEMS gyroscopes, in particular to a mode matching MEMS gyroscope temperature self-compensation control system and method, and the system comprises a driving mode control subsystem which is used for carrying out closed-loop control on the phase and amplitude of the driving mode of an MEMS gyroscope; the detection mode control subsystem is used for carrying out closed-loop control on the gain of a band-pass filter of an MEMS gyroscope detection mode and enabling the center frequency of the band-pass filter to be matched with the resonant frequency of the detection mode; force coupling is carried out between the driving mode control subsystem and the detection mode control subsystem through the Coriolis effect. The gain of the band-pass filter is adjusted based on the real-time change of the quality factor of the detection mode, and the center frequency of the band-pass filter is matched with the resonant frequency of the detection mode, so that the suppression and self-compensation of the temperature drift of the gyroscope are realized.

The invention belongs to the field of network security, and discloses a defense method for zero dynamic attacks of a wind power generation system, which comprises the following steps: constructing a mathematical model of the wind power generation system; a gain scheduling PI controller and electronic adjustable passive elements are introduced into the wind power generation system, and the electronic adjustable passive elements are a controllable inductance module and a controllable capacitance module and are used for adjusting inductance and capacitance of the system; designing a zero-dynamic attack signal, injecting the zero-dynamic attack signal into the system, and analyzing destructive factors of the zero-dynamic attack; defending the designed zero-dynamic attack signal, dynamically adjusting and optimizing the parameter value of the element adjustment coefficient so as to adjust the inductance and capacitance, converting an unstable zero point into a stable zero point, weakening the destructiveness of the zero-dynamic attack, and realizing defending. According to the method, the system can keep stable operation in a complex environment, the dependence limitation in the prior art is overcome, and the defense robustness is enhanced.

The invention discloses a temperature measurement system and method based on a direction-adjusting excitation control Wheatstone bridge, and belongs to the technical field of sensor signal precision measurement. According to the invention, the problem of temperature measurement deviation caused by non-linear and asynchronous sampling error output by a traditional temperature measurement circuit based on a Wheatstone bridge and offset voltage output by a differential amplification circuit is solved. According to the invention, a bridge arm resistance value optimization strategy is used for suppressing output nonlinearity, the complexity of a temperature measurement value calculation model is reduced, and the precision temperature measurement reliability is improved; based on an analog-to-digital converter synchronous sampling and direction-adjusting excitation control method, asynchronous sampling errors caused by asynchronous signal sampling are eliminated, and measurement deviation caused by inherent output offset voltage of a differential amplifier is counteracted. The output nonlinearity of the temperature measurement circuit can be well inhibited, and asynchronous sampling errors and measurement deviations are eliminated. The method can be applied to the field of temperature measurement based on the Wheatstone bridge.

The invention discloses a compact broadband wide-beam dipole antenna array based on a high-order mode, which comprises two sub-arrays, the two sub-arrays share a dielectric substrate of which the upper surface and the lower surface are partially coated with copper, the equal-amplitude feed is carried out through a one-to-two power division feed structure, the two sub-arrays are bilaterally symmetrical about the central axis of the dielectric substrate, and the upper surface and the lower surface of the dielectric substrate are partially coated with copper. Each sub-array comprises a substrate integrated waveguide cavity and a plurality of pairs of side-by-side dipoles which are connected through a grounding coplanar waveguide, the substrate integrated waveguide cavity is formed by arranging metalized via holes at equal intervals and works in a TE510 high-order mode, the dipoles are placed in the center of the periphery of each electric field loop of the substrate integrated waveguide cavity, and the ground coplanar waveguide is connected with the substrate integrated waveguide cavity. High directivity of an H plane and unilateral radiation with 3dB beam width of an E plane can be obtained by placing the radiation arms of the dipoles according to a radiation field superposition and cancellation rule. The problems that an existing wide-beam antenna is complex in structure, and the technical scheme is difficult to achieve are solved.

The present invention discloses a method for simulating and predicting the spatial pattern of land for coordinated spatial planning and carbon reduction control, and belongs to the technical field of land space planning. The present invention includes collecting data, preprocessing the collected data, and establishing a basic database for optimizing low-carbon land use; combining energy carbon emissions with spatial mapping technology to calculate the annual land use carbon emissions, and using the GM (1,1) model to predict the land use carbon emission coefficient of the target year; based on Markov and linear programming models, combined with natural development trends and land space planning requirements, predict and optimize the quantitative structure of low-carbon land use; using the PLUS model, simulate and predict the land use pattern under different scenarios; evaluate the carbon reduction benefits of the low-carbon land use optimization method of coordinated spatial planning, and propose multi-scale low-carbon decision-making and optimization suggestions. The method of the present invention not only reduces policy risks and problems in actual implementation, but also provides a more accurate and dynamic carbon emission optimization solution.

The embodiment of the invention relates to the technical field of MacOS injection, and discloses a static injection method and a storage medium. The method comprises the following steps: inserting a blank character in a loading command area of an executable file, and writing a first target loading command at the position of the blank character; a second target loading command in the loading command area is processed, so that a non-first loading command in the loading command area is shortened by a target length, position information, corresponding to the loading command, of the loading command area is adjusted according to processing of a second target recorded command, and the position information comprises the size of a virtual memory, the address of the virtual memory and a file deviation value; the executable file keeps normal operation after being processed by the second target loading command, and the target length is not smaller than the length of the blank character. The problem that the reserved space is not enough to insert the loading command of the injection library is solved, the static injection process can be simplified, the implementation difficulty of the static injection is reduced, and successful implementation of the static injection is guaranteed.

The invention provides a large arch foot bench method based on a rigid support system, and belongs to the technical field of tunnel engineering. The large arch foot bench method based on the rigid support system comprises the following steps that S1, an advance support is constructed on the outer side of a tunnel primary support; s2, an upper step is excavated; s3, constructing a tunnel primary support with a large arch springing in an upper step range; s4, lagging behind the upper step for a certain distance, and excavating a lower step; s5, a lower step primary support in the lower step range is constructed; and S6, follow-up procedures are conducted according to a normal step construction method. The method combines the advantages of a pipe-roofing underground excavation technology, a shallow-buried underground excavation method and a large-arch-foot bench method, construction can be organized according to the conventional bench method under a rigid support system, a large-arch-foot tunnel primary support is arranged on an upper step, the influence on the upper step during excavation of a lower step can be obviously reduced, the implementation difficulty of the construction method is greatly reduced, the operability is high, and the construction efficiency is high. And the construction safety and the construction efficiency are guaranteed, and remarkable economic and social benefits are achieved.

The invention relates to a satellite navigation baseband processing device optimized by a coprocessor. A core processing part of the device adopts a realization framework of a main processor and a coprocessor; the coprocessor is used for scheduling hardware acceleration computing resources in real time under exchange control of the main processor, and completing high-real-time processing tasks such as signal capture and tracking loop processing of satellite navigation; an instruction set and an external interface of the coprocessor are subjected to targeted optimization, the bus bit width and the internal storage width of the coprocessor are expanded, and the in-situ width of an ALU and a register of the coprocessor is reserved; performing bus data access and storage by adopting an external port access instruction and an internal memory access instruction which are matched with the expanded bus according to the expansion state; and performing access and storage of single register data by adopting a bus write enable, an access instruction and a storage instruction which are matched with the expanded internal storage width. According to the invention, the function load of the main processor is effectively reduced, and the implementation cost of the baseband processing device is reduced.

The invention relates to the technical field of lithium battery module thermal runaway protection materials, in particular to a high-insulation and high-heat-insulation composite sheet used between lithium battery cells and a preparation process of the high-insulation and high-heat-insulation composite sheet. Through holes with heat insulation and noise reduction effects are formed in the high-insulation and high-heat-insulation composite sheet used between lithium battery cells; the through holes are filled with aerogel; the high-insulation and high-heat-insulation composite sheet comprises a bottom plate, a cover plate and a partition plate fixedly connected between the bottom plate and the cover plate, and the high-insulation and high-heat-insulation composite sheet is prepared from 1-3 wt% of aramid nanofibers, 5-10 wt% of superfine mica powder, 2-5 wt% of nanosilicon dioxide, 10-25 wt% of hollow glass beads, 4-8 wt% of a plasticizer and the balance of high-temperature-resistant resin. The power battery module has good flame-retardant, insulating and heat-insulating effects, the thermal runaway protection performance of the power battery module can be improved, then the driving safety performance of a new energy automobile can be improved, the advantage of light weight is achieved, and the voyage of the new energy automobile can be improved.

The invention provides a method and a system for diagnosing and estimating the state of health of a fuel cell based on polarization characteristics, and relates to the technical field of fuel cells, and the method comprises the following steps: constructing a proton exchange membrane fuel cell model based on a multi-condition multi-physical field, extracting health state characteristics of the to-be-diagnosed battery from the proton exchange membrane fuel cell model under a preset typical working condition; and inputting the health state characteristics into a trained fuel cell health state diagnosis model to obtain the health state of the to-be-diagnosed battery evaluated by the fuel cell health state diagnosis model. The method not only can accurately diagnose the health state of the fuel cell, but also is low in implementation difficulty and cost and relatively high in interpretability, so that the dependence of high-precision diagnosis of the health state of the fuel cell on expert experience is reduced.

The invention discloses a programmable metasurface unit chip and a programmable metasurface, and the unit chip sequentially comprises a first dielectric layer, a first bonding dielectric layer, a controllable metal layer, a second bonding dielectric layer, a third dielectric layer, a third metal layer, a third bonding dielectric layer, a fourth dielectric layer and a fourth metal layer from top to bottom. The controllable metal layer comprises a metal structure and a controllable element and is used for forming two isolation electromagnetic wave regulation and control channels so as to independently control orthogonal polarization electromagnetic waves and provide independent and controllable electromagnetic response for the incident orthogonal polarization electromagnetic waves; the third metal layer is used as a radio frequency ground for improving the electromagnetic wave reflection performance; the fourth metal layer is used for inputting bias voltage; and bias voltage is loaded to the controllable element through the metal holes of each layer. The plurality of unit chips are arranged on the substrate in an array mode to form the metasurface. The unit chip provided by the invention can greatly reduce the design and implementation complexity of the metasurface, reduce the production and maintenance cost, and promote the application of the metasurface in a wireless information system.

The invention provides a channel decoding method and a related circuit, and relates to the technical field of channel decoding, and the method comprises the steps: initializing a check node and a variable node of a low density parity check (LDPC) code; and performing iteration updating processing for multiple times, and judging the variable node based on the variable node information after iteration updating to obtain a decoding result. According to the embodiment of the invention, the hardware implementation difficulty of channel decoding can be reduced.

The invention relates to the technical field of artificial intelligence, and provides a tensor processing method and device, electronic equipment, a storage medium and a program product, and the method comprises the steps: determining the shape of a first physical tensor based on the shape of a logic tensor; under the condition that the first dimension of the first physical tensor exceeds the dimension limit, splitting the first physical tensor into a plurality of second physical tensors with the same size, and determining a tensor distance based on the shapes of the second physical tensors; traversing all the second physical tensors, and executing the following operations in the traversing process: obtaining tensor data corresponding to the currently traversed second physical tensor based on the index and tensor distance of the currently traversed second physical tensor, and calling the operator library interface to process the tensor data to obtain a processing result. According to the method, the operator library interface is cyclically called, so that a plurality of physical tensors are processed, the operator library interface does not need to be modified on a large scale, and the modification workload is greatly reduced.

The invention discloses a permanent magnet temperature detection method, device and equipment and a permanent magnet traction system, and relates to the technical field of rail transit, and the disclosed permanent magnet temperature detection method comprises the steps: determining the current short-circuit current of a permanent magnet motor; obtaining a preset temperature mapping relationship, wherein the preset temperature mapping represents a corresponding relationship between the short-circuit current and the permanent magnet temperature; and determining a target permanent magnet temperature corresponding to the current short-circuit current according to a preset temperature mapping relation. According to the invention, the temperature of the permanent magnet motor can be measured by detecting the current short-circuit current of the permanent magnet motor and combining the preset temperature mapping relation representing the corresponding relation between the short-circuit current and the temperature of the permanent magnet without observing the change of the flux linkage in operation of the permanent magnet motor, and the accuracy of temperature measurement of the permanent magnet is effectively improved.

The invention belongs to the technical field of digital twinning, and particularly relates to an intelligent network connection platform based on digital twinning, which is structurally divided into a physical layer, a data layer, a twinning layer, a functional layer and an application layer which are connected in sequence, wherein the physical layer and the data layer are used for performing a real-time data acquisition function aiming at vehicle, traffic light and traffic flow information in a real road, performing classification and standardization processing on data through the data layer, and providing data support for operation of the digital twin platform; the twinborn layer and the functional layer are used for undertaking the task of real-time mapping of the real world from the perspective of the full life cycle and the whole process; and the application layer is used for realizing fine management of data through a digital twin visual interface and a platform management system deployed at a Web end. According to the method, a feedback mechanism is optimized, multivariate data is integrated to an application layer, the conciseness and readability of the system are enhanced, and meanwhile, a management system is designed, so that the digital twin platform is easy to manage, dynamic, efficient and flexible to expand.

The invention relates to a cloud-side collaborative intelligent building control system, method and device. The system comprises a device layer, a data aggregation layer and a cloud side. Wherein the cloud comprises a data base, a service middle table and an application layer; wherein the data base comprises a virtual controller; the data aggregation layer is used for aggregating the equipment data of the equipment layer and reporting the equipment data to a data base, so that a virtual controller in the data base performs control operation on corresponding equipment in the equipment layer based on the equipment data; the application layer is used for receiving the control instruction and issuing the control instruction to the service middle station; the service middle station is used for issuing the control instruction to the virtual controller; and the virtual controller is used for receiving the control instruction and controlling the corresponding equipment in the equipment layer according to the control instruction. The problems that in the prior art, the system complexity is high, the implementation difficulty is large, and the data change of the to-be-managed equipment in the whole life cycle cannot be mastered can be solved.

The embodiment of the invention provides a log tracking method and device, equipment and a medium, and relates to the technical field of computers. The method comprises the following steps: creating a user-defined thread pool, wherein the user-defined thread pool comprises sub-threads; when the user-defined thread pool needs to execute the asynchronous task, MDC information of the main thread is transmitted to the MDC of the sub-thread, so that log tracking is realized by tracking a unique identifier in the MDC information in a request link corresponding to the asynchronous task while the sub-thread executes the asynchronous task. Therefore, according to the log tracking method, the MDC information of the parent thread is transmitted to the child thread, it is ensured that the logs can keep a consistent context environment in the asynchronous task execution process, all the logs in the request link can be tracked according to the unique identifier (such as traceId) in the MDC information, and therefore the traceability of the logs is improved, and the user experience is improved. And the realization difficulty of subsequent problem tracking and performance analysis is reduced.

The invention discloses a security control system 2M communication encryption method and a security control system 2M communication encryption system based on dynamic encryption, which realize encryption and decryption of inter-station 2M communication data by combining the high efficiency of symmetric encryption and the security of asymmetric encryption. The safety control system communication interface conversion device comprises a central processing unit (CPU), a field programmable gate array (FPGA), an Ethernet PHY physical layer chip and the like. The FPGA of the communication interface conversion device is integrated with a communication encryption and decryption IP core and is responsible for realizing encryption and decryption of application communication data, generation of a shared session key, dynamic updating and verification processes and improving the reliability and safety of communication; the CPU is connected with the FPGA through a parallel bus and is responsible for the unpacking and packing processing function of interface conversion application layer data. According to the method, symmetric encryption and asymmetric encryption are combined, and the secret key is dynamically updated, so that the method is suitable for practical engineering, the security problem and the replay attack problem in conventional communication can be solved, and the security and reliability of the system are improved.

The invention provides a preparation method of a thermal barrier coating alpha-Al2O3 thermal growth oxide, and belongs to the technical field of surface engineering. The preparation method comprises the following steps: preparing the MCrAlY bonding layer on the surface of a sample; the surface of the MCrAlY bonding layer is cleaned; raising the temperature to a first preset temperature at a heating rate of 50-80 DEG C / s, performing first heating treatment on the cleaned MCrAlY bonding layer, and generating an alpha-Al2O3-based TGO film with a first thickness on the surface of the MCrAlY bonding layer; and cooling to a second preset temperature, and carrying out secondary heating treatment on the MCrAlY bonding layer, so that the alpha-Al2O3-based TGO film on the surface of the MCrAlY bonding layer continuously grows to a second thickness. According to the method, the rapid heating and segmented heat treatment technology is adopted, the thermal barrier coating with the alpha-Al2O3 thermal growth oxide can be produced and prepared in the atmospheric environment, the process is simple, the implementation difficulty is low, and the production cost is low; and meanwhile, the thermal growth stress is reduced, the coating is effectively prevented from premature failure, and the technical requirement for pre-oxidation of the thermal barrier coating of the gas turbine blade is met.

The invention provides a measurement-based quantum calculation method for a physical driving variable component sub-character solicitation solver, and the method comprises the steps: S1, constructing a variational structure according to a Hamiltonian expression of a to-be-solved quantum multi-body system; s2, converting the variational structure into a graph state and a measurement mode corresponding to a measurement type quantum calculation scheme; s3, initializing an input state; s4, according to the designed measurement sequence, performing a series of single particle measurement on the graph state from the input state to obtain the output state of the variable component sub-line; and S5, continuously iteratively optimizing the variational parameters until the ground state energy of the target Hamiltonian is solved. According to the method, a variational structure is constructed from Hamiltonian of a problem to be solved, the advantages of single-particle measurement operation in measurement type quantum calculation are utilized, implementation of a multi-quantum-bit revolving door is simplified by introducing a small number of auxiliary quantum bits, and therefore quantum resource overhead of a quantum circuit is greatly reduced.

The invention discloses a preparation method of a high-resilience graphene foamed film, which is characterized in that on the basis of traditional hydrazine hydrate foaming, tert-butyl alcohol is introduced as a regulator, so that the problem of non-uniform pore size distribution in a graphene film caused by rapid reduction of hydrazine hydrate is avoided, and the compression resistance and resilience of the whole material are improved by virtue of a fine pore structure. And through subsequent low-temperature thermal reduction, carbonization and graphitization treatment, the conjugated structure of the graphene is further recovered, and the porous membrane skeleton is endowed with high compression resilience performance. The obtained high-resilience foaming film can be used as a base material of materials for phase change heat storage, batteries, capacitors, thermal interfaces and the like, and preparation of a high-mechanical-property composite material is achieved.

The invention discloses a building body unit capable of expanding and shrinking a space, a building body and equipment, and relates to the technical field of engineering constructions.The building body unit has a shrinking form and an expanding form which can be switched mutually and comprises a reference part, a plurality of first expanding parts and a plurality of second expanding parts; the number of times that the same first expansion piece and the same second expansion piece execute linear movement in the same axial direction or execute rotary movement around the same axial direction is one time. According to the building body unit, the building body and the equipment, each expansion piece is controlled to execute one-time linear movement or rotary movement in the same axial direction, the problem of more interference between the expansion pieces in the three-dimensional space deformation process can be solved, the implementation difficulty and cost of synchronous movement of the same expansion piece are effectively reduced, and the construction efficiency is improved. And the control precision of synchronous movement is improved, so that the deformation difficulty and the deformation cost of the expandable space are greatly reduced, and the feasibility, the stability and the reliability of the expandable space in engineering are improved.

The invention discloses a large-data-volume dense signal processing method based on a domestic multi-core DSP (Digital Signal Processor). The large-data-volume dense signal processing method comprises the following steps: step 1, constructing a data processing external storage space; 2, designing a data transmission program; 3, designing a DSP kernel data processing program; 4, designing a data transmission processing state monitoring module; and 5, outputting a data processing result by designing an output data processing result module. The method aims at improving the real-time performance and universality of dense signal processing of a large data volume and reducing the engineering implementation difficulty. According to the method, the OpenMP parallel programming program interface is combined to carry out parallel processing on the data so as to improve the program running efficiency.

The invention provides a photon calculation method, a photon calculation device and computer equipment. The method comprises the steps that first data are obtained, the first data comprise a plurality of first elements, and each first element represents a number; splitting each first element in the first data into a plurality of parts in the electronic domain; and in a photon domain, representing a plurality of parts after each first element of the first data is split by adopting an optical signal, and carrying out optical processing on the optical signal so as to represent calculation on the plurality of first elements.

A fluid delivery device for an eye is provided. The fluid delivery device includes a first component; a second component connected to the first component and forming a fluid-tight chamber with the first component, the chamber being adapted to contain a drug solution to be delivered; the plurality of microneedles are arranged on the first part in a penetrating manner, and the microneedles are arranged to establish a fluid delivery channel which is in fluid communication with the cavity between the first part and the to-be-treated part of the eye when the first part is attached to the eye of the subject; the gas release layer is located in the cavity, and the gas release layer is arranged to release gas into the cavity. The fluid delivery device not only can deliver a drug solution, but also can deliver environment gas expected by treatment, and is simple to operate and convenient to dispose after being used.