516 results about "Fan-in" patented technology

The invention discloses a hybrid nonlinear floating fan hydrodynamic load coupling calculation method. The method comprises the steps of obtaining a velocity potential of a wave field in a computational domain through OceanWave3D numerical simulation (a wave field calculation model), and performing post-processing to obtain wave field data; dividing an instantaneous wet surface according to the six-degree-of-freedom motion, calculated based on an OpenFAST (floating fan calculation model), of the floating fan in each time step, and performing pressure integration to obtain a Front-Krylov force; updating the hydrostatic stiffness matrix according to the real-time position change of the buoyancy center of the fan, and calculating hydrostatic restoring force; linear radiation force and diffraction force are calculated through time domain convolution of frequency domain data, nonlinearity of the radiation force and the diffraction force is considered based on an instantaneous wetting volume change coefficient, and hydrodynamic load and structural motion response calculation in the current time step is completed after the OpenFAST is coupled. According to the method, coupling calculation between the open source code OpenFAST and OceanWave3D is achieved, and compared with commercial software at the present stage, the method is more accurate in wave load calculation under the extreme wave sea condition.

The invention provides an anti-surge control method. The anti-surge control method comprises the following steps: acquiring historical data of a surge point; inputting the historical data of the surge points into the to-be-trained model to obtain an anti-surge model; based on the anti-surge model, determining an anti-surge line of the fan; the anti-surge line is generated by translating the abscissa of the surge line of the fan in the anti-surge coordinate system rightwards by a first preset unit and translating the ordinate downwards by the first preset unit; the real-time fan inlet flow and the real-time fan total energy head of the fan are obtained, and the real-time working condition point of the fan is determined; whether the real-time working condition point is located below an anti-surge line or not is judged, and if not, the opening degree of an anti-surge valve is adjusted to 100%; if yes, the anti-surge opening degree and the anti-surge valve opening time are determined based on the real-time working condition point, the anti-surge valve is opened according to the anti-surge valve opening time, the anti-surge valve is controlled to operate at the anti-surge opening degree, and the problem that the position area where the working condition point of the draught fan is located cannot be accurately and automatically adjusted at present is solved.

The invention discloses a fan operation abnormal vibration monitoring method and system based on multi-sensor fusion, and relates to the technical field of fan operation monitoring, and the method comprises the following steps: deploying a plurality of types of sensors on a fan, collecting the data of each sensor in real time, carrying out the synchronous processing of the sensor data through employing an IEEE1588 protocol, carrying out the preprocessing through combining wavelet denoising, and carrying out the monitoring of the abnormal vibration of the fan. Extracting feature data by using a principal component PCA combined independent component ICA analysis method; according to the method, multiple types of sensors are deployed on the fan, the actual conditions of the offshore wind field are considered, fine processing and feature extraction are carried out after multi-source signals are collected in real time, the abnormal vibration condition of the fan in the coastal or offshore wind field under the complex environment is accurately monitored and reliably recognized, and therefore the early abnormal features of fan operation can be captured in time; normal changes and real fault anomalies caused by environmental factors are effectively distinguished, and early discovery of faults is further realized.

The invention relates to the technical field of air conditioners, in particular to a defrosting system and method of a finned heat exchanger and an air conditioner outdoor unit. The defrosting system of the finned heat exchanger comprises a fan parameter monitoring module, a defrosting module and a control module, wherein the fan parameter monitoring module is configured to monitor the power variation of a fan in real time; and the data processing module is configured to analyze the power variation of the fan so as to judge whether the finned heat exchanger is frosted or not and perform defrosting operation. According to the scheme, the defect that it is difficult to accurately predict and respond to the actual frosting condition when an air conditioning system judges the frosting opportunity in the related technology is overcome, the frosting condition is accurately judged, the mistaken defrosting operation process is reduced, and then defrosting is conducted in time.

An electronic apparatus includes: a chassis; a heat generating element provided in the chassis; and a cooling module that is provided in the chassis and cools the heat generating element. The cooling module has: a heat diffusion member that absorbs and diffuses heat from the heat generating element; and a pair of fans that are placed with the heat diffusion member located therebetween, and have discharge ports provided only in side surfaces facing each other, thereby making it possible to discharge air toward the heat diffusion member. The chassis has an outer wall that extends along a placement direction of the pair of fans and has an exhaust port formed therein, and the exhaust port is positioned between the pair of fans in the case where the placement direction is taken as a reference.

The invention relates to a performance evaluation method for an ACE (Adaptive Cycle Engine) and electronic equipment. The method comprises the following steps: acquiring a to-be-evaluated ACE complete machine zero-dimensional simulation model, an adaptive fan high-fidelity simulation model, and working conditions and control rules of the to-be-evaluated ACE complete machine zero-dimensional simulation model; coupling the obtained models to obtain an ACE multi-dimensional coupling simulation model, and operating under the obtained working condition and control rule to obtain the ACE performance to be evaluated and the performance of each component in the ACE performance; according to the ACE multi-dimensional coupling simulation model, characteristic curves in an ACE complete machine zero-dimensional simulation model are adopted to represent characteristics of different ducts of a self-adaptive fan in the ACE complete machine zero-dimensional simulation model, and based on the difference of simulation results between the ACE complete machine zero-dimensional simulation model and the self-adaptive fan high-fidelity simulation model, the self-adaptive fan high-fidelity simulation model is obtained. The method is obtained after coupling is realized by continuously iteratively adjusting the scaling factor of the characteristic curve, so that the simulation precision of the self-adaptive fan is improved, and the overall performance evaluation accuracy is improved.

The present invention belongs to the technical field of fan hoisting, and specifically relates to a high-power fan hoisting control system and method based on a narrow site in a low-temperature environment. By collecting environmental data of the construction site, including real-time temperature and parameters related to temperature such as humidity and wind speed, the present invention constructs a high-precision temperature prediction model to achieve accurate temperature prediction of the construction environment. Based on this temperature prediction, the present invention can not only dynamically adjust the hoisting power parameters, but also intelligently plan and optimize the hoisting path by avoiding low-temperature sensitive areas in the hoisting path, ensuring efficient operation under low-temperature and narrow-site conditions. This comprehensive management method significantly improves the safety and efficiency of operation under extreme environmental conditions, effectively avoiding the decline in power system performance and operation errors caused by low temperature.

The invention provides a method, device and equipment for determining the installation position of a fan. The method provided by the invention comprises the following steps: performing heat dissipation simulation on an initially designed server to obtain heat dissipation simulation data; according to the positions of a plurality of heat concentration areas in the heat dissipation simulation data, alternative design positions of a ventilation wall and alternative design positions of all fans in the ventilation wall are determined; according to the alternative design position of the ventilation wall, the installation range of the ventilation wall is determined, and according to the alternative design position of each fan in the ventilation wall, the installation range of each fan in the ventilation wall is determined; determining a plurality of heat dissipation schemes based on the installation range of the ventilation wall and the installation range of each fan in the ventilation wall; testing the heat dissipation performance of the server under each heat dissipation scheme; and determining a final heat dissipation scheme from the plurality of heat dissipation schemes. According to the method provided by the invention, the mounting position of the fan can be accurately determined.

The invention discloses an improved fan speed control optimization method, which belongs to the technical field of PID (Proportion Integration Differentiation) control optimization and comprises the specific steps of S1, constructing a fan speed control system; s2, improving a hyperbolic sine and cosine optimization algorithm; s3, performing parameter optimization on a PID controller module of the fan speed control system by using an improved hyperbolic sine and cosine optimization algorithm, and obtaining a group of optimal values of control parameters Kp, Ki and Kd under a set number of iterations; s4, inputting a group of optimal control parameters obtained through optimization in S3 into a PID controller module, and adjusting the speed of a fan to reach a target rotating speed by controlling a motor driving module; the PID controller parameters of the fan speed control system are optimized through the improved hyperbolic sine and cosine optimization algorithm, so that the control precision and robustness of the system are improved, and the adaptive capacity of the fan in different controlled scenes is enhanced.

A fan coil for a single unit in a multi-unit building has hot and cold riser stacks. Heating and cooling closed loop fluid flow paths thermally connect the fan coil in thermal communication with the hot and cold riser stacks, respectively. The fan coil has a housing that houses heating and cooling heat exchangers in thermal communication with the heating and cooling closed loop fluid flow paths, respectively. A fan in the housing may draw ambient air through the fan coil. In a heating mode, the air collects heat from the heating heat exchanger and in a cooling mode, the air is cooled by the cooling heat exchanger. The heated or cooled air exits the fan coil and enters a room.

The invention provides a heat dissipation control method and electronic equipment, and relates to the technical field of computers. The method comprises the following steps: based on respective initial weights and first target rotating speeds of a plurality of target fans for a first component in the electronic equipment, controlling the plurality of target fans to dissipate heat of the first component, so that the temperature of the first component is in a target range. Performing at least one reduction processing on the first initial weight of the at least one target fan, and determining a first total power consumption of the plurality of target fans in the predetermined time period after the previous reduction processing and a second total power consumption of the plurality of target fans in the predetermined time period after the current reduction processing; and under the condition that the second total power consumption is greater than or equal to the first total power consumption, taking the weights of the plurality of target fans determined after the previous reduction processing as first target weights of the plurality of target fans, so that under the condition that the plurality of target fans are controlled to operate based on the first target weights and the first target rotating speed, the second total power consumption is greater than or equal to the first total power consumption. The temperature of the first component is within a target range.

The invention discloses a control device of a fan and the fan, and relates to the field of fan control, a main control circuit adjusts a control strategy when the fan is controlled according to working environment data of the fan acquired by a monitoring module, so that the running state of the fan is adjusted to the optimal running state; the operation data and the working environment data of the draught fan are transmitted to the wireless transmission module, the main control circuit is powered by the first power source, the wireless transmission module is independently powered by the second power source, and therefore no matter whether the main control circuit is powered off or not, the mobile terminal can obtain corresponding data from the wireless transmission module at any time and conduct fault recognition. The main control circuit adjusts the running state of the fan in different working environments, so that the fan runs in the optimal running state, and running data and working environment data of the fan can be stored by the wireless transmission module. Therefore, a user can obtain corresponding data through the mobile terminal at any time and timely and accurately maintain the fan when the fan breaks down.

The invention discloses a fan control method and system and a computer program product, and relates to the technical field of fan control, and the fan control method comprises the following steps: converting fan control information of a control command for N fans into a control command in a preset format, and converting the control command into a protocol signal conforming to a preset communication protocol, therefore, the fans can understand and respond to the control command, protocol signals are sent to the N fans through the clock signal line and the N data signal lines, return data of the N fans are obtained, the multiple fans are controlled at the same time through one control command and one communication module, and therefore the control efficiency is improved. The technical problems that when data transmission is carried out between the fan controller and the multiple fans in the air cooling radiator, the resource consumption of the fan controller is large, and the overall performance of the heat dissipation system is affected can be solved, and the technical effects that the hardware cost is reduced, resource configuration is optimized, and the overall performance of the heat dissipation control system is improved are achieved.

The invention relates to the technical field of semiconductor chips, in particular to a buffer insertion method and a storage medium. The method comprises the following steps: acquiring position information of a fan-out point and all corresponding fan-in points of the integrated circuit, and calculating a Manhattan distance between the fan-out point and each fan-in point based on the position information; calculating a corresponding first delay between the fan-out point and the fan-in point when the buffer is not placed and a corresponding second delay after the buffer is placed based on a nonlinear model; obtaining a corresponding buffer insertion candidate position based on the first delay, the second delay and the Manhattan distance between the corresponding fan-out point and the fan-in point; and carrying out calculation by taking the buffer insertion candidate position as a candidate point of a Van Ginneken algorithm to obtain a buffer placement scheme. The problems of inaccurate long conductive path delay estimation and inaccurate calculation of a buffer insertion scheme are solved.

The utility model discloses fan dispensing inspection and magnetic ring assembly equipment which comprises a control module and a lower rack, the pushing mechanism, the dispensing mechanism, the visual camera inspection mechanism, the module carrying mechanism, the grabbing and moving mechanism, the tape clip automatic push-out mechanism, the automatic tape winding mechanism, the tape assembling and pressing mechanism, the discharging mechanism and the control module are in circuit connection with the control module. The visual camera inspection mechanism is used for detecting the dispensing condition and feeding back the dispensing condition to the control module, so that the production efficiency is greatly improved and the reject ratio is reduced; the equipment adopts an automatic assembly operation mode, so that the assembly precision is greatly improved, the dynamic balance is very stable, the noise of the cooling fan in the rotating process is reduced, and the service life is also greatly prolonged; by replacing the positioning carriers of the products, the products of various specifications can be compatible at the same time, and the products are convenient and fast to replace and produce; the labor is reduced, the yield is increased, and the product quality is improved.

The invention provides an energy storage system fan management method, device and equipment and a medium, and relates to the technical field of air cooling energy storage. In an existing air-cooled energy storage system, heat dissipation is mainly conducted through a fan, it is particularly important to formulate a proper fan management method, most of existing fan management methods are controlled through a fixed threshold value, the fan management methods excessively depend on temperature feedback, and if the temperature repeatedly jumps at the threshold value critical point, the fan management method cannot work normally. The fan can be started and stopped repeatedly in a short time, and the service life of the fan is shortened. The method comprises the following steps: firstly, acquiring the cell temperature and temperature rise rate of a battery pack in real time, and setting a starting mark for a fan needing to be started; the starting sequence of the fans is sequenced according to the starting marks, the maximum number of the fans allowed to be started at the same time is set, and the fans are started in sequence; and judging whether the battery cell temperature of the battery pack is smaller than a closing threshold, and if the battery cell temperature is smaller than the closing threshold, closing the fan of the corresponding battery pack. The fan management method is easy to implement, low in energy consumption and good in cooling effect.

The invention discloses a building smoke exhaust intelligent adjusting system and method for multi-air-port cooperative control, and the system comprises a data collection module which is used for collecting the smoke exhaust demands corresponding to all air ports and the pressure data of a public air duct in real time, and an AI cloud intelligent control module which is used for dynamically generating a fan frequency adjustment instruction and a valve opening adjustment instruction; the layered control module is used for controlling air outlet in a layered manner according to the independent air ports and the public air duct; the energy-saving optimization module is used for enabling the fan to operate in the optimal efficiency interval through a frequency optimization algorithm and dynamically distributing the smoke exhaust amount of each air outlet based on the smoke exhaust priority; and the fault early warning module is used for monitoring the current and voltage of the fan and the pressure data of the air duct in real time, identifying the abnormal state of the equipment and triggering multi-stage warning and protection actions. According to the invention, the fan frequency adjusting instruction can be dynamically generated to realize accurate regulation and control; air-out is controlled in a layered mode through the independent air openings and the public air channel, the air channel pressure is more stable, the air-out effect of all areas is ensured, and the energy utilization rate is increased.

The control method comprises the following steps that A, an angle relation is extracted from counter electromotive force, the actual position of a rotor and the current rotating speed of the fan are obtained through phase-locked loop calculation, and the forward and reverse wind state of the fan is judged according to the positive or negative value of the current rotating speed value of the fan; and B, the starting mode of the air conditioner fan is controlled according to the clockwise and counterclockwise wind of the fan, the current rotating speed of the fan and the actual position of the rotor judged in the step A. Different starting control modes are selected by detecting the current forward and reverse wind states and the rotating speed of the draught fan, and the starting reliability of the draught fan is improved. Compared with forward and reverse wind judgment of a fan provided with a sensor, the hardware cost is reduced, and the structure is simplified; compared with some open-loop algorithms, the angle is calculated through closed-loop control of the phase-locked loop, and the anti-interference capability and the angle following real-time performance are better.

The invention relates to the technical field of automatic control, and discloses a fan power control method. The method comprises the following steps: firstly, acquiring current environmental parameters to correct a laboratory reference health characteristic curve, and generating a theoretical health reference curve; and then, sending a characteristic disturbance sequence to the fan motor and synchronously acquiring data. By comparing the in-service characteristic curve with the theoretical health reference curve, the performance degradation index reflecting the degradation degree is calculated. And generating a dynamic compensation coefficient according to the index to adjust the initial target power. And finally, executing power closed-loop control by taking the final target power as a set value. According to the method, the actual performance degradation of the fan can be quantitatively evaluated, and the control precision and the performance consistency of the fan in the whole life cycle and in different operation environments are improved. In addition, the interference of air density fluctuation caused by factors such as altitude and seasonal change on the power reference is eliminated, and the control robustness of the fan in different geographic positions and working environments is improved.

The invention discloses a hierarchical layout and wiring method and system based on a quantum cellular automaton circuit, and the method comprises the steps: obtaining an original logic netlist which comprises a first logic sequence among a plurality of nodes, the first fan-in and fan-out information of each node, and a first hierarchy; preprocessing the original logic netlist to obtain a first logic netlist layered according to logic depth; according to a preset layout strategy, inter-layer long lines which do not conform to global clock synchronization are eliminated, and cross lines are optimized, so that a second logic netlist is obtained, and the second logic netlist comprises a second logic sequence among the multiple nodes, second fan-in and fan-out information of all the nodes and a second level; and dynamically wiring the plurality of nodes in the second logic netlist according to a preset wiring strategy, and distributing clock signals. According to the method and the system, the layout and wiring quality and reliability of a quantum cellular automaton (QCA) circuit are remarkably improved.

A method includes: receiving an integrated circuit design; classifying, by the processing device, a signal path of a sub-circuit of the integrated circuit design based on a connection between an input port of the signal path and a component of the sub-circuit to generate a classification of the signal path; computing, by the processing device, a security vulnerability result of the sub-circuit of the integrated circuit design based on the classification of the signal path and based on a trust level of a zone in a fan-in cone to an input port of the signal path; and generating a security vulnerability report based on the security vulnerability result of the sub-circuit of the integrated circuit design.

The invention discloses a time sequence optimization method of a clock tree and a computer readable storage medium, and relates to the technical field of clock tree synthesis and time sequence optimization. The method comprises the steps that a to-be-processed time sequence path is obtained, time sequence optimization is conducted on the to-be-processed time sequence path from the to-be-processed time sequence path, and time sequence optimization comprises the steps that a register with the minimum time sequence margin is determined as a to-be-processed register; determining a target fan-in end timing margin according to the plurality of fan-in end timing margins of the to-be-processed register; and / or determining a target fan-out end timing margin according to the plurality of fan-out end timing margins of the register to be processed; calculating a clock offset according to the target fan-in end timing margin and / or the target fan-out end timing margin; adjusting the time sequence margin of each fan-in end of the register to be processed and / or the time sequence margin of each fan-out end of the register to be processed according to the clock offset; and updating the to-be-processed time sequence path until a set ending condition is met.

The invention discloses a fan rotating speed adjusting method and device, equipment, a storage medium and a program, and relates to the technical field of servers, the fan rotating speed adjusting method comprises the steps that basic information of a target server is obtained from a server management system, the basic information comprises temperature information when the target server runs and firmware version information used by the target server, and the temperature information is stored in the server management system; obtaining hardware configuration information of the target server; determining a real-time running state of a target server according to the basic information, and determining whether the target server needs to carry out standby speed regulation of a cooling fan or not; and adjusting the running rotating speed of the cooling fan based on a determination result of standby speed regulation and the real-time running state. The problems of energy waste caused by continuous low-speed operation of the fan and assembly overheating caused by long-time standby due to complete stalling of the fan in the related technology are solved.

The invention discloses an intelligent control system and method for a small and miniature direct-current brushless fan based on the Internet of Things, and relates to the technical field of brushless fan control. The small and miniature direct current brushless fan intelligent control system based on the Internet of Things comprises a fan heat dissipation fault analysis control module, a fan coupling fault identification control module and a fan fault protection analysis control module. According to the method, whether stator winding heat dissipation parameter optimization is carried out or not is judged through stator winding heat dissipation fault analysis, then whether electrical coupling identification optimization is carried out or not is judged through electrical coupling fault analysis, and finally whether safety protection parameter optimization is carried out or not is judged through fan safety protection analysis. The electrical coupling fault recognition reliability of the small and miniature direct current brushless fan in the communication process of the Internet of Things is improved, and the problem that the fan fault protection timeliness of the small and miniature direct current brushless fan is not high due to the fact that the control accuracy of the corresponding fan heat dissipation process is not high in the communication process of the Internet of Things in the prior art is solved.

The utility model relates to the technical field of permanent magnetic mechanisms, and discloses a permanent magnetic mechanism for a circuit breaker, which comprises a circuit breaker shell, the outer wall of the circuit breaker shell is fixedly connected with a connecting sheet, the outer wall of the connecting sheet is provided with a mounting hole, and the top of the circuit breaker shell is fixedly provided with a vacuum bubble. The outer wall of the vacuum bubble is fixedly sleeved with a porcelain sleeve, the bottom of the vacuum bubble is fixedly connected with a pole, and the outer wall of the pole is connected with a threaded sleeve. After permanent magnet equipment on the device works in an inner cavity of a loading cavity for a long time, in order to ensure that magnets and other parts in a permanent magnet mechanism can stably work under the normal temperature condition, the fans in the inner walls of the heat dissipation openings in the corresponding positions are used for pumping air, so that the temperature in the device is reduced through the fans on the device, and the service life of the device is prolonged. And performance reduction or damage caused by over-high temperature is avoided.

The invention provides a fan speed regulation method and device.The fan speed regulation method comprises the steps that under the condition that a first fan in computing equipment breaks down, fault information of the first fan and equipment parameters of the computing equipment are obtained; based on the fault information and the equipment parameters, performing temperature prediction on the computing equipment through a temperature prediction model to obtain a predicted temperature; according to the normal temperature, the predicted temperature and the fault information of the computing equipment, the speed of the fan to be subjected to speed regulation is regulated; the fan to be subjected to speed regulation is a first fan or other fans except the first fan. Thus, the fault information and the equipment parameters are obtained, the predicted temperature is obtained through the temperature prediction model, the speed of the first fan or other fans is adjusted in combination with the normal temperature and the fault information, and accurate and effective control over the rotating speed of the fans is achieved.

The invention discloses a fan voltage control method and device, a storage medium, an electronic device and a circuit. The method comprises the steps that a power supply source of a fan and the battery capacity of the fan are detected in the working process of the fan; determining whether the working scene of the fan needs to be switched according to the power supply source of the fan and the battery power of the fan; under the condition that it is determined that the working scene of the fan needs to be switched, target voltage under the target working scene of the fan is determined; and the first voltage of the fan in the current working scene is adjusted to be the target voltage, and the duty ratio of the fan is adjusted so that the rotating speed of the fan can be kept consistent with the current working scene in the target working scene. Severe fluctuation and instability of the rotating speed of the fan are restrained, and it is ensured that the rotating speed of the fan is kept stable in the scene switching process.

The utility model relates to the technical field of electronic component taking and placing, in particular to an electronic component taking and placing device which comprises a fixing assembly, a first motor is fixedly connected to the rear portion of the lower end of the fixing assembly, a first supporting block is fixedly connected to the output end of the first motor, and a first air cylinder is fixedly connected to the front end of the first supporting block. The output end of the first air cylinder is fixedly connected with a second supporting block, the lower end of the second supporting block is fixedly connected with an adjusting assembly, the upper portion of the front end of the second supporting block is fixedly connected with a clamping frame, and the outer surface of the adjusting assembly is fixedly connected with a connecting pipe in a penetrating mode. The fixing assembly comprises a fixing plate, a first fan is fixedly connected to the front portion of the lower end of the fixing plate, and a connector is fixedly connected to the outer surface of the first fan in a penetrating mode. According to the pick-and-place device for the electronic elements, the fixing assembly and the adjusting assembly are arranged on the whole pick-and-place device, so that the pick-and-place process of the electronic elements can be facilitated.

The utility model discloses an annular multi-user quantum key distribution system based on space division multiplexing. The annular multi-user quantum key distribution system comprises a Charlie relay end, a plurality of user ends and an annular quantum channel, the Charlie relay end and the plurality of user ends are respectively accessed to the annular quantum channel; the Charlie relay end comprises a multi-wavelength pulse generation module, a fan-in module, a first beam splitter, a first fan-out module and a detection module. The utility model discloses an annular multi-user quantum key distribution system based on space division multiplexing, which is characterized in that a multi-wavelength pulse generation module emits pulses with multiple wavelengths, the pulses are coupled to a specified fiber core of a multi-core optical fiber through a fan-in module, and then the pulses reach specified user sides through an annular quantum channel; spatial division multiplexing is utilized to realize simultaneous communication of a plurality of user sides, so that the communication capacity is expanded, and the non-linear effect in the optical fiber is prevented from being increased. And meanwhile, a Sagnac ring structure is adopted, so that the phase stability is very good.

The application discloses a kind of dynamic response monitoring method and system of large-size fan, belong to electric power equipment remote monitoring technical field, the method is: obtaining the component structure image and sensor data of the component to be detected;According to the external structure change of the component structure image to the component to be detected is detected, obtains the external abnormal characteristics of the component to be detected;According to temperature change data and the material type and structure size of the component to be detected, simulate the internal structure change of the component to be detected, obtain the internal abnormal characteristics of the component to be detected;Based on external abnormal characteristics and internal abnormal characteristics, in combination with meteorological change situation and fan operation data, analyze fault reason, obtain fault diagnosis result.Therefore, by implementing the present application, it can solve the problem that the external and internal of fan component are detected quickly and accurately for fault reason and fault position without suspending the operation of fan in prior art, and a comprehensive and accurate fault diagnosis result is obtained.