1035 results about "Electronic information" patented technology

The invention provides an electronic information data association method and system based on the Internet of Things. The method comprises the steps that a parallel processing architecture is adopted to execute rapid protocol conversion on a high-priority data packet, data recombination is directly carried out through a pre-compiled conversion rule template, a complex format verification link is skipped, and the integrity and format correctness of the converted data packet are determined; response time and error rate statistical information in the data transmission process are obtained, protocol conversion rules and scheduling strategies are optimized through a feedback mechanism, and if the success rate of certain protocol conversion is lower than a standard value, corresponding mapping rules and verification algorithms are updated; and carrying out standardized packaging on all converted data by adopting a unified data exchange standard, adding an equipment identifier, a timestamp and a data type label, establishing a cross-protocol general data format, and carrying out final distribution after judging whether a data packet meets a standard format requirement.

The invention discloses an electronic information system multi-fault diagnosis method and system based on artificial intelligence, and belongs to the technical field of electronic information system fault diagnosis, and the method comprises the steps: data collection and preprocessing, feature extraction and selection, multi-fault diagnosis model construction, real-time fault diagnosis and analysis, and fault recovery and feedback. The system comprises a data acquisition module, a preprocessing module, a feature extraction and selection module, a multi-fault diagnosis model module and a fault analysis and repair module, and all the modules cooperate to achieve full-process automation from data acquisition to fault repair. The method has a self-learning optimization capability, can significantly improve the fault diagnosis efficiency and reliability of a complex electronic information system, and is suitable for real-time fault diagnosis scenes of various types of electronic equipment.

The invention discloses a multi-protocol high-speed image data receiving and aligning method and system based on an FPGA (Field Programmable Gate Array), and relates to the technical field of electronic information and image processing. Serial data streams from an image sensor are received, an FPGA serial input primitive is dynamically called to convert serial data into parallel data; a low-voltage differential signal protocol, a mobile industry processor interface protocol and a serial low-voltage signal protocol are supported; a configurable sliding window mechanism is adopted to compare synchronous codes in real time, and byte boundaries are locked; by identifying the time difference of arrival of data of each channel, multi-channel phase alignment is realized by adopting hardware-level delay compensation, and data arriving at the channel in advance is compensated by adopting a first-level register cache; and analyzing frame header and frame tail information of the image data, reconstructing an original image matrix and generating a video time sequence signal. The problems of poor compatibility and high resource consumption in multi-protocol high-speed image data receiving are solved.

The invention provides a thermal interface material based on vinyl imidazole ionic liquid as well as a preparation method and application of the thermal interface material. The thermal interface material is prepared from the following raw materials: the vinyl imidazole ionic liquid, a heat-conducting filler subjected to surface treatment by a silane coupling agent, an initiator and a cross-linking agent. The thermal interface material is based on the vinyl imidazole ionic liquid and the heat-conducting filler, the limitation of a traditional thermal interface material base body is broken through, dispensing can be achieved, no solvent is needed in the preparation process, the adverse effect of solvent residues on the performance of a chip when the thermal interface material is applied to the chip subsequently can be avoided, and the thermal interface material has ideal interface bonding strength; the heat conduction effect is remarkable and stable, the heat stability is good, the material can be well attached to an interface, the problems of stress concentration, cracks and the like are not prone to occurring, and the material can be widely applied to the heat conduction and heat dissipation fields of aerospace, advanced energy, electronic information, military industry and the like.

The invention discloses an archive electronic information data recovery method, which relates to the technical field of archive management and data recovery, and comprises the following steps: obtaining original archive data, extracting first data and generating second data according to format characteristics, generating a version sequence of the data object based on the structured metadata, matching the third data and the encrypted data block which is not extracted in the first data as fourth data according to a preset strategy, performing decryption, generating fifth data according to a format feature, if the first data has the unextracted non-encrypted damaged data block, generating supplementary repair data, and if the first data has the unextracted non-encrypted damaged data block, generating the supplementary repair data. The first data, the third data, the fifth data and the repair data are integrated according to the hierarchical identifier, the association between the catalogue and the metadata is reconstructed, a complete file is generated, and a three-in-one system is formed by constructing a structured metadata version sequence, repairing heterogeneous data in a graded manner and fusing block chain dual verification and is suitable for file recovery.

The invention discloses a crop pest image intelligent identification system based on an electronic information technology, and relates to the technical field of agricultural informatization. The system comprises an image acquisition module which acquires RGB image data of a target crop area and synchronously acquires associated environment monitoring data and image shooting time data; the preprocessing module preprocesses the data; the insect pest recognition module outputs insect pest type data and insect body position frame selection coordinates through an improved YOLO recognition model; the comparison module generates insect pest development state data; a risk assessment module calls a pest hazard level dictionary matching risk coefficient, and calculates an environmental suitability value in combination with environmental monitoring processing data; the risk scoring module generates a comprehensive risk score; and the early warning decision module matches the prevention and treatment scheme data when the comprehensive risk score exceeds a preset threshold. According to the technology, intelligence and precision of insect pest recognition and early warning are realized, and the agricultural insect pest prevention and control efficiency is improved.

The invention proposes a robot path planning algorithm based on a particle swarm optimization algorithm and a dynamic window method, and relates to the field of control theories and electronic information, and the method comprises the steps: introducing an inertia weight updating strategy based on a state factor, setting adaptive parameters and crossover and mutation operators to improve the global search capability, increase the population diversity, and improve the robot path planning precision. On-line self-adaptive updating of inertia weight and learning factors is realized on line in combination with Q-learning, gene combination modes are enriched through crossover operators, convergence and exploratory performance of the algorithm are improved, an obstacle avoidance strategy of a traditional DWA algorithm is improved, weight parameters of a dynamic window evaluation function are dynamically adjusted according to real-time information of a target and an obstacle, and an obstacle avoidance algorithm is established. According to the method, the global planning is adopted, the path points generated through global planning are adopted as temporary targets, fusion of MOQLCOPSO and the improved DWA algorithm is achieved, local optimum is effectively avoided, the planning efficiency and path safety are improved, and the method is suitable for mobile robot navigation under the complex three-dimensional terrain.

The invention belongs to the technical field of electronic information, and provides a method for optimizing the stability of a photoelectric information conversion assembly in a severe environment, which comprises the step of optimizing the stability of the photoelectric information conversion assembly in the severe environment. The method comprises the following steps of: synchronously acquiring environment parameters such as temperature, humidity and illumination and equipment current data in a high-temperature and high-humidity environment to construct a multi-dimensional time sequence group; analyzing the coupling degree of each environment parameter and the current sequence, and after locking the high coupling relationship between illumination and current, judging whether the current response has delay or not when the illumination suddenly changes; if the delay exists, further analyzing the current response sensitivity, if the sensitivity deviates from expectation, constructing an illumination-current prediction model, and calculating the current regulation quantity in advance by predicting the illumination abrupt change amplitude to realize pre-regulation; and finally, collecting the adjusted data iteration optimization model, and improving the dynamic response performance and stability of the assembly in a complex environment.

The invention relates to the technical field of museum safety management, and discloses a museum intelligent monitoring system based on multi-source electronic information fusion, and the system comprises a multi-source electronic information collection module which obtains video monitoring data, environment sensor data and passenger flow monitoring data distributed in a museum; the data fusion module is used for extracting dynamic behavior characteristics from the video monitoring data, extracting abnormal environment parameters from the environment sensor data, extracting density distribution characteristics from the passenger flow monitoring data, and generating a comprehensive risk map through multi-modal characteristic fusion; the intelligent early warning module is used for generating graded early warning signals based on risk types contained in the comprehensive risk map; and the linkage control module is used for triggering corresponding control operations in security and protection equipment starting, environment regulation equipment regulation or passenger flow dispersion terminal prompting in the corresponding areas according to the graded early warning signals. The safety supervision and management efficiency of the museum can be improved, and various risks in the museum can be comprehensively, accurately and timely managed, controlled and handled.

The invention discloses hardware detection equipment for electronic information engineering, and relates to the technical field of electronic hardware detection. The device comprises a detection table, a fixing mechanism is arranged above the detection table, the fixing mechanism comprises a clamping plate slidably connected to the upper portion of the detection table, the lower portion of the clamping plate is in threaded connection with a bidirectional threaded rod, the bidirectional threaded rod is fixedly provided with a first transmission wheel, and the first transmission wheel is in transmission connection with a second transmission wheel through a transmission belt; the second transmission wheel is fixedly installed on a threaded cylinder, the threaded cylinder is in threaded connection with an air rod, the air rod is fixedly provided with a piston, and the piston is slidably connected into the air cylinder. Through rotation of the bidirectional threaded rod, displacement of the clamping plate is controlled, the threaded cylinder is driven to rotate through the transmission wheel and the transmission belt, rotary motion is converted into linear motion of the air rod, the piston is pushed to reciprocate in the air cylinder to generate air flow, the air flow is sprayed out of the air spraying pipe through the splitter plate, and linkage of clamping and cleaning is achieved; dust or chippings on the surface of the electronic hardware are effectively removed, and the detection precision is ensured.

The present invention relates to the field of avionics equipment. Provided is an avionics fault knowledge fusion method oriented to distributed collaboration. The method comprises the following steps: S1, acquiring multi-source fault knowledge data of avionics equipment, and performing analysis processing and screening on the acquired multi-source fault knowledge data of the avionics equipment; S2, for the problem of knowledge conflicts across different timelines, comprehensively calculating machining fault knowledge on the basis of attribute similarity, in order to complete fault knowledge fusion; S3, for the problem of fault knowledge conflicts from different sources, completing fault knowledge fusion by means of fault element annotation and identification; and S4, constructing a fault knowledge graph, and storing fused fault knowledge. The present invention can mitigate knowledge conflicts during both the initial construction of a fault knowledge model and the expansion of existing fault knowledge models, thereby improving the accuracy, reliability and integrity of knowledge model construction for avionics information equipment, and thus providing better support for fault localization and maintenance of the avionics equipment.

The invention discloses a CAN card control method and system based on fault diagnosis, and relates to the technical field of electronic information, the system is composed of a plurality of functional modules, and the system comprises a feature sensing prediction module which dynamically adjusts the sampling frequency based on a bus load, collects multi-dimensional data, fuses the data into time-space correlation features, and sends the features to a server; inputting the space-time correlation characteristics into a lightweight adaptive attention LSTM model, and outputting a real-time fault prediction probability and time delay; the optimization control module obtains a fault prediction probability, constructs a multi-objective optimization strategy based on different intervals of the fault prediction probability, and adaptively adjusts CAN card control parameters according to the multi-objective optimization strategy, and the CAN card control parameters comprise a CAN Carport rate, a data priority and a working mode; collecting the bit error rate, the data transmission time delay deviation and the channel equipment temperature of a channel, performing normalization processing, and performing weighted summation according to a preset weight to obtain a channel health degree; and a closed loop adaptation module.

The invention discloses a model-based electronic information product interface definition and mapping method and device, and the method comprises the steps: defining a logic layer interface model of a single machine according to the logic function of an interface, decomposing and refining a black box function logic interface of a subsystem and a flow item borne by the black box function logic interface, and capturing all external interfaces of the concerned single machine; defining a physical layer interface model of the single machine, describing physical node information in the interface, and replacing the type of the external interface of the single machine from the logic layer interface model to the corresponding physical layer interface model; defining an equipment layer interface of the single machine, and generating single machine external electrical connector node information based on a mapping relation between the physical layer interface and the equipment layer interface; obtaining a user-defined interface information table, and generating an interface data list containing single-machine external connectors and connector node information based on the incidence relation of the model information; and analyzing a structured text which is exported by the SysML model and contains detailed information of a single-machine interface through a schematic diagram design tool, and automatically creating a schematic diagram design model of a corresponding interface connector.

The embodiment of the invention relates to the technical field of electronic information, and provides a supply chain transaction asynchronous consistency implementation method and related products, and the method comprises the steps: configuring a preset aspect logic for a target business method, and generating a proxy object; executing a preset aspect logic of the proxy object, and determining a transaction context state of a target transaction correspondingly executed by the target business method based on the meta-information of the target business method; when the transaction context state is a transaction state, determining a target execution mode of the target transaction; in response to a submission instruction for the target transaction, adding a message record of the target business method to a preset local message list; executing the target transaction according to the target execution mode, if the execution succeeds, updating the execution state to be successful, and if the execution fails, repeatedly executing the target transaction within a preset retry time threshold value according to the target execution mode. According to the embodiment of the invention, on the premise of not changing the core business process logic, the cross-system transaction consistency is ensured.

The invention relates to the technical field of electronic information data processing, in particular to an electronic information data AI anomaly detection and repair method, which comprises the steps of preprocessing multi-modal data, automatically identifying multi-format data and adaptively encoding and normalizing; fusing a convolutional neural network, a bidirectional long-short-term memory network and a Transform architecture to extract multi-modal features, and judging abnormality through an improved deep isolation forest model; the exceptions are subdivided through a lightweight convolutional neural network in combination with a rule base, and service scene labels are automatically matched; based on the abnormal type, grade, scene and semantic four-dimensional degree, a reinforcement learning model intelligently matches a repair strategy such as filling, correction or manual intervention; a data, model and repair three-level parallel architecture and a sliding window mechanism are adopted to realize real-time stream processing; incremental learning closed-loop optimization is driven through validity and rationality dual verification, and the method is suitable for high-reliability data governance scenes such as finance and communication.

The invention relates to a Manchester coded signal decoding method and a Manchester coded signal decoding system, and belongs to the field of electronic information, communication and power system automation. A plurality of clocks with the same frequency and different phases are generated according to Manchester encoding signals, the clocks are used for sampling the signals, a phase-shifting clock sampling method is used, dependence on a high-frequency clock is reduced, most interference in communication signals is determined to be eliminated according to a majority voting strategy for sampling results, and the accuracy of the signals is improved. And the seriously distorted signals are corrected according to special value enumeration, so that the interference of signal duty ratio distortion and burrs is reduced, and the decoding reliability is further improved. And finally, determining an original data stream of the signal according to the two level states of each code element. The method is used for decoding high-speed and ultra-high-speed Manchester encoding signals under the conditions of no high-frequency clock, poor data signal quality or unstable clock, and simultaneously realizing self-adaptive communication of different encoding formats.

The invention relates to the technical field of vehicle-mounted electronic information and computer man-machine interaction, and discloses a vehicle camera APP display mode and system, and the mode comprises the steps: responding to a starting instruction, and recognizing a currently activated video input source as an in-vehicle or out-vehicle camera; dynamically loading a differentiated interaction strategy according to the type of the input source, if the mode is an in-vehicle mode, loading a man image beautifying control and a visual algorithm, and if the mode is an out-vehicle mode, shielding a beautifying function and releasing the computing power of the algorithm; a shooting trigger instruction is generated by monitoring a physical or visual logic signal, and an echo countdown state is entered after an image is collected; and if the user operation is not detected after the countdown is finished, automatically executing data archiving. The system comprises a display initialization module, a strategy configuration module, an acquisition control module and an interactive filing module. According to the invention, the potential safety hazard of manually operating the screen in the driving process is solved, and the non-inductive safe storage of the image data is realized.

The invention belongs to the technical field of electronic information, and relates to an online low-voltage load monitoring and abnormal tripping positioning method and a related device. According to the method, electrical parameters of all monitoring points are collected in real time, key parameters are calculated after analog-to-digital conversion and filtering denoising, and the key parameters are compared with a set threshold value to judge whether the monitoring points are in an abnormal state or not; once an abnormal state is found, an early warning is generated and uploaded to a remote platform; and continuously monitoring the state of the main switch or the total current at the same time, and when tripping occurs, backtracking an abnormal record within a preset time period before tripping, and positioning the last or the most serious abnormal monitoring point as an abnormal source. The system comprises a data acquisition module, an analog-to-digital conversion module, a preprocessing module, a calculation module, a judgment module, an early warning module, a trip monitoring module and a positioning module. According to the invention, early warning before a fault and rapid positioning after tripping are realized, and the intelligent level, the operation and maintenance efficiency and the power supply reliability of the power distribution network are improved.

A marking element for tree trunks, with a base plate that has an striking surface and a cutting surface facing away from the striking surface. A cutting edge protrudes from the cutting surface and an electronic information carrier is attached to the base plate, which has a memory module and an antenna that is electrically connected to the memory module. The antenna has an antenna section which protrudes laterally beyond the striking surface and beyond the cutting surface.

The invention relates to the technical field of electronic information storage, and discloses an electronic information storage box with a protection structure, and the electronic information storage box comprises a box body, in the moving process of a bearing shell, the bearing shell drives a sliding rod to move, the sliding rod slides on the inner wall of a fixed shell, the sliding rod drives a vertical block to move, and the vertical block drives an elastic rod to move; under the limitation of a limiting groove, an elastic rod drives a sliding block to move on the inner wall of the limiting groove, the sliding block drives a transverse rod to move, the transverse rod drives a connecting plate to move, the connecting plate drives a round rod to move, the round rod drives square plates to move, and the two square plates get close to each other in the water cooling box to extrude cold water in the water cooling box; and cold water enters the elastic pipe and enters the water bag through the elastic pipe, so that the water bag is filled with the cold water, the cold water is conducted into the lifting plate through cold transfer, the lifting plate can perform water-cooling heat dissipation work on the hard disk, and the heat dissipation protection effect of the box body on the bearing shell is improved.

The invention belongs to the technical field of long-wave communication and electronic information, and discloses a cross-medium communication system based on a magnetoelectric mechanical antenna, which comprises the magnetoelectric mechanical antenna, a receiving coil, a transmission medium container, a signal generator, a power amplifier and a static bias magnetic field applying device, the magnetoelectric mechanical antenna is arranged on a support of the static bias magnetic field applying device, the receiving coil is arranged in the transmission medium container, and the main vibration direction of the receiving coil and the main vibration direction of the magnetoelectric mechanical antenna are coaxial; the signal generator is connected with the power amplifier in series, the power amplifier is connected with a lead-out wire of a piezoelectric layer of the magnetoelectric mechanical antenna, and the signal generator provides an excitation signal for the piezoelectric layer of the magnetoelectric mechanical antenna through the power amplifier; and the digital oscilloscope is connected with the port of the receiving coil and is used for collecting electromagnetic wave signals which are captured by the receiving coil and are transmitted by the magnetoelectric mechanical antenna. The cross-medium communication system provided by the invention can realize effective and stable transmission of information among different media.

The invention relates to the technical field of archive retrieval, in particular to an archive electronic information intelligent retrieval system which comprises a hierarchical extraction module, a frequency comparison module, a character alignment module, a similarity labeling module and an index integration module. According to the method, the archive text and the keyword character string are extracted in a layered mode, the reference ratio is calculated based on the total number of characters and the preset threshold value, the content priority is accurately divided, character distribution and index positions are analyzed in combination with query of the first character, positioning distribution information is generated, and the proportion value is formed by the consistent number of the characters one by one of the matched positions and the length of the query character string. The method comprises the following steps of: screening fragments meeting consistency requirements, generating a similar block labeling list in combination with an index range and a similarity label, integrally realizing layered screening, proportion comparison, character-by-character consistency analysis and similarity labeling, and promoting the linkage of unstructured archive data retrieval from coarse screening to fine matching; and the retrieval accuracy, the matching fragment positioning performance and the result structured expression are obviously improved, and multi-dimensional quick acquisition is realized.

Apparatuses, methods, and systems for testing templates of electronic messages. One method includes continuously sending, by a server, a main electronic message, wherein at least a content of the main electronic message is determined by a main message template, creating a plurality of test templates including at least an A template and a B template, initiating, by the server, testing of test electronic messages, wherein at least a content of one test electronic message is determined by the A template, and at least the content of another of the test electronic message is determined by the B template, wherein editing of the test electronic messages occurs simultaneous with the continuous sending of the main electronic message, and selecting, by the server, a winning template of the A template and the B template.

The invention belongs to the technical field of electronic information, and provides an interactive display device, system and method, an electronic device and a program product. In the interactive display device, a transmission interface is connected with a processing chip and used for transmitting a screen projection signal from an external device to the processing chip under the condition that the external device is connected into the transmission interface through a data line; the processing chip is connected with the display module and is used for transmitting the media stream data carried in the screen projection signal to the display module so as to display video data in the media stream data through the display module; the communication network module is connected with the processing chip and is used for transmitting the network signal to the processing chip, so that the interactive display equipment is networked; and the signal processing module is respectively connected with the communication network module and the transmission interface and is used for receiving the network signal from the communication network module and transmitting a shared network signal obtained by processing the network signal to external equipment through the transmission interface.

The invention belongs to the technical field of electronic information, and particularly relates to an enterprise financial risk assessment method, which comprises the following steps of: acquiring original finance and tax ticket data of an enterprise; according to the original finance and tax ticket data, generating a multi-dimensional risk assessment index through a preset rule engine and an index derivation algorithm; an enterprise comprehensive evaluation model is constructed, and the enterprise comprehensive evaluation model is used for carrying out quantitative scoring on the enterprise from five dimensions and generating a comprehensive scoring result; constructing a risk scoring model, inputting the basic derivative index, the rule class index, the risk ratio index and a comprehensive scoring result of the enterprise comprehensive evaluation model into the risk scoring model, and generating an enterprise tax risk total score through a weighted fusion algorithm; and according to the total risk score and a dynamically set risk level threshold, outputting an enterprise financial risk level and a risk early warning report, and according to the scheme, carrying out refined and highly-adaptive risk assessment of an industry reference standard.

The invention belongs to the technical field of new materials and electronic information, and particularly relates to a transition metal doped ZnIn2S4 gas sensor as well as a preparation method and application thereof. The gas sensor comprises a substrate and a transition metal doped ZnIn2S4 nano array growing on the surface of the substrate in situ, the nano array is composed of a plurality of two-dimensional nano sheet layers, the two-dimensional nano sheet layers are arranged in a staggered stacking mode and extend at an included angle of + / -5 degrees relative to the normal direction of the surface of the substrate, and the transition metal doped ZnIn2S4 nano array is arranged on the surface of the substrate. And a network assembly with a three-dimensional flower-shaped topological structure is formed through physical or chemical connection. The preparation method is simple, the energy band structure of the material is effectively regulated and controlled, the forbidden band width is reduced, on the other hand, the specific surface area of the material is remarkably increased, and the pore size distribution is optimized. And the prepared gas sensor shows excellent gas selectivity to triethylamine, is high in response value and high in recovery speed, and is expected to be applied to the fields of environmental monitoring and food safety.

The utility model discloses a vehicle-mounted open type general information communication integrated framework based on an LRM. The vehicle-mounted open type general information communication integrated framework comprises a general LRM bearing rack, a bus exchange control module, a power supply module, a fan module and at least one general information communication module, the universal LRM bearing rack is connected with the bus exchange control module, the power module and the universal information communication module through buses, and the fan module is arranged at the bottom of the universal LRM bearing rack. The universal LRM bearing rack comprises a back plate assembly, a rack frame, a shock absorber and a rear panel assembly. And the bus exchange control module, the general information communication module and the power supply module are inserted from the front side of the general LRM bearing rack to be butted and interconnected, and are interconnected through a power bus through backplane exchange, IP KVM, management, expansion and power supply. The vehicle-mounted electronic information system can be integrated to form various vehicle-mounted electronic information systems, has good installability, maintainability and expansibility, improves destroy resistance and severe environment resistance, and realizes flexible, rapid and comprehensive integration of the system.

The invention discloses a data processing method of an electronic information technology based on big data, and relates to the technical field of Internet of Things equipment. According to the method, distributed streaming batch integrated processing is taken as a core, a data lake base is constructed through real-time acquisition, dynamic preprocessing and elastic storage, original data is stored in HDFS / HBase according to a partition strategy after standardized cleaning, and data security is guaranteed through encryption and fine-grained access control; on the basis of a storage layer, a Spark / Flink parallel computing framework is utilized to execute feature engineering and model training, and a stream processing module realizes millisecond-level real-time analysis through time window aggregation and complex event pattern recognition; the batch processing module adopts an incremental learning mechanism to optimize historical data mining efficiency; an analysis result is embedded into a service flow through an API or a self-service portal, and automatic decision making is driven; user interaction behavior data are returned to the feature library in real time, and the model precision is continuously iterated.

The invention relates to the technical field of human body security check, in particular to a human body security check device. A human body safety inspection device comprises a safety inspection frame and a detection assembly arranged on the safety inspection frame, the detection assembly comprises an X-ray emitter and a detector, and the detector is located on the opposite side of the X-ray emitter and forms a penetrating type detection path. The device has the advantages that the X-rays have penetrability, the detector can receive the X-rays penetrating through the human body and convert the X-rays into electronic information, so that articles carried by the human body are analyzed, the detection range is wider due to the arrangement of a penetrating type detection path, various types of articles, especially non-metal dangerous articles, can be detected, and the detection efficiency is improved. The accuracy and comprehensiveness of security check are improved, the system does not depend on artificial experience, and the possibility of leak detection is reduced.

The invention belongs to the technical field of electronic information components, and discloses a ceramic composite protective layer capable of improving working temperature, and a preparation method and application thereof. Firstly, a silicon nitride film is deposited on the surface of a sensitive layer of a film temperature sensor by adopting a magnetron sputtering technology; and depositing an aluminum oxide protection layer on the surface of the silicon nitride film by adopting an ultrasonic spraying technology to form a protection layer with a silicon nitride / aluminum oxide composite structure. The internal stress of the composite structure protection layer can be reduced, the thermal stability of the composite structure protection layer is improved, meanwhile, the problem of overflow of sensitive layer material elements in the sensor is inhibited, and the high-temperature stability of the film temperature sensor is improved. According to the invention, the working temperature range of the thin film temperature sensor in an ultra-high temperature environment is obviously expanded, so that the thin film temperature sensor can better adapt to a severe environment at a hot port of an aero-engine with a large thrust-weight ratio.