657 results about "Work cycle" patented technology

The invention relates to the technical field of online car-hailing order dispatching, in particular to an online car-hailing intelligent order dispatching method and system based on a multi-dimensional rule, and the method comprises the steps: building a standardized multi-dimensional feature set through collecting passenger orders, driver states, traffic conditions, environmental weather and regional events, and carrying out the combined modeling of regional order demands and driver online conditions based on a recurrent neural network, thereby achieving the intelligent order dispatching of the online car-hailing. Outputting expected passenger and driver thermodynamic distribution, constructing expected difference thermodynamic distribution according to the expected passenger and driver thermodynamic distribution, training a scheduling strategy through reinforcement learning, enabling an unloaded vehicle to actively migrate to a supply and demand gap area before an order is generated, and further combining an order generation condition and driver expected off-duty information to obtain an order generation result; and calculating the accumulated driving time required by the driver to return to the expected off-duty place after the driver completes the service, and selecting the work order for distribution when the time difference between the accumulated driving time and the expected off-duty place is minimum, thereby realizing accurate matching between the order distribution strategy and the driver work cycle. The empty driving rate is effectively reduced, and the quick response capability and the resource configuration efficiency of the system in a dynamic supply and demand environment are improved.

A method for mining a single coal outlet in an ultra-long working surface comprises: disposing a scraper conveyor on a working surface and arranging two shearers at the two ends; the two shearers synchronously cutting notches in directions towards a middle portion of the working surface, obliquely inserting blades, and starting a normal mining operation; when the two shearers reach the middle portion of the ultra-long working surface, either one of the two shearers starting to operate in the reverse direction, while the other shearer does not change the direction of operation and performs a cutting and mining operation at a middle position of the working surface; and after the other shearer completes the cutting and mining operation at the middle position, starting to operate in the reverse direction. The steps above are a working cycle, and a plurality of working cycles are performed in sequence to complete mining work on the ultra-long working surface.

The invention relates to a stern bearing lubrication characteristic analysis method coupled with the influence of three-dimensional vibration of a stern shaft, and the analysis method comprises the steps: S1, inputting global parameters into a bearing lubrication performance and kinetic parameter calculation module and a propulsion shaft system vertical, horizontal and torsional three-dimensional vibration calculation module, and completing the corresponding calculation; s2, obtaining a bearing transfer matrix; s3, obtaining a system transfer matrix; s4, the forced vibration calculation module completes corresponding calculation; s5, a bearing relative position feedback module completes corresponding calculation; and S6, judging whether the calculation of one work cycle is completed or not, and storing and outputting the working characteristic result of the stern shaft-stern bearing in the cycle. By designing a bearing lubrication performance and kinetic parameter calculation module and a propulsion shafting vertical and horizontal torsion three-dimensional vibration calculation module, the vibration and lubrication coupling effect between a stern shaft and a stern bearing is fully considered, and a stern shaft vertical and horizontal torsion three-dimensional vibration and stern bearing lubrication characteristic bidirectional coupling model is established. And a vibration lubrication mutual feedback mechanism under a complex vibration condition is disclosed.

A method for determining an abnormal trend in the supporting of a support of a fully mechanized mining face. The method comprises: acquiring first pressure monitoring data of all hydraulic supports at an initial stage of a stoping process of a fully mechanized mining face, and second pressure monitoring data of all the hydraulic supports during a routine stoping process of the fully mechanized mining face; determining first working cycle pressure data of each hydraulic support at the initial stage of the stoping process, and second working cycle pressure data of each hydraulic support during the routine stoping process; determining reference similarity and real-time similarity of each hydraulic support; and determining an abnormal state of supporting pressure of each hydraulic support.

The invention relates to the technical field of vacuum cup production equipment, and discloses stamping equipment and a stamping method.The stamping equipment comprises a machine body, a mounting cylinder is mounted on the inner side of the machine body, a plurality of lower dies are fixedly connected to the inner side of the mounting cylinder at equal intervals, and mounting grooves are formed in the lower dies; an L-shaped rod is slidably connected to the interior of the mounting groove, the L-shaped rod is sleeved with a spring, one end of the L-shaped rod is rotatably connected with a swing rod, one end of the swing rod is hinged to a top rod, and the top of the top rod is fixedly connected with a top plate. According to the stamping equipment, the hexagonal prism structure is formed in the mounting cylinder, efficient layout of the six lower dies is achieved, the stamping equipment can process six stamping parts at the same time in one work cycle through the structural design, and the production efficiency is greatly improved. And moreover, when the lower die moves to an output port of the mounting cylinder, a material ejecting assembly in the lower die can automatically eject out the stamping part, and the function of automatic discharging is achieved.

The utility model discloses a telescopic device for a crawler-type self-moving tail system, which is positioned between tail traction equipment and a standard middle part and is used for stretching when the tail traction equipment moves forwards, and then the telescopic device is manually retracted forwards so as to form a gap between the telescopic device and the standard middle part. A middle belt frame is additionally arranged at the gap, so that the middle belt frame and the standard middle part are in butt joint with each other and are matched to continuously transport the coal; the continuous tunneling device is directly connected with tail traction equipment, continuous tunneling without shutdown is achieved by means of continuous extension of the multiple sections of telescopic units, the device is retracted after one work cycle is overhauled, the working time is greatly saved, and the tunneling efficiency is improved.

According to the electric wheel bolt tightening device, the electric tightening gun, the input shaft, the output shaft and the sleeve are sequentially connected, and the electric tightening gun and the rotary bearing are matched to sequentially output power to the sleeve so as to drive the sleeve to rotate and tighten a bolt on an electric wheel. The electric tightening gun can accurately control the torque, the bolt is tightened to the correct preset torque, and the bolt is prevented from loosening or being too tight. And the axial elastic moving capacity of the output shaft enables the device to adapt to different tightening positions and angles, and the flexibility of the device is improved. The driving air cylinder drives the rotating shell to rotate so as to drive the counter-force arm to rotate, so that the device can counteract torque borne by the device during bolt tightening, and the situation that the device provided with the electric wheel bolt tightening device bears large counter-force and is damaged is avoided. By means of the scheme, automation of the electric wheel bolt tightening process can be achieved, manual operation is reduced, the labor intensity of workers is reduced, the working period is shortened, and the working efficiency is improved.

The invention relates to a high and low temperature durability test system for an oil pump. The test system comprises a mold temperature controller assembly, an environment box assembly, an oil pump working cycle assembly, an auxiliary oil tank assembly and a control system. The mold temperature controller assembly can provide medium engine oil with different temperatures, the environmental box assembly can create required high and low temperature environments, the oil pump working circulation assembly realizes flow and pressure adjustment and circulation of oil pumps with different calibers through two independent loops, and the auxiliary oil tank assembly facilitates rapid replacement of test engine oil. And the control system realizes automatic control and parameter monitoring of the whole process. The device can complete various tests such as high-temperature durability, low-temperature durability and high-low temperature cycle durability, has the advantages of low cost, rich test conditions, flexibility in operation, high safety, high adaptability and the like, and effectively improves the research and development test efficiency of the oil pump.

The utility model discloses a detection system which comprises a station conversion module which is provided with product clamping areas corresponding to stations and can drive the product clamping areas to be switched among the stations; the feeding and receiving module is arranged at the feeding station and is used for bearing a to-be-detected product and conveying the to-be-detected product to the product clamping area at the feeding station; the detection module comprises a first visual detection module and a second visual detection module which are arranged on two adjacent detection stations, and is used for detecting defects at different positions of the product; and the discharging module is arranged at the discharging station and used for taking out the product on the product clamping area at the discharging station from the product clamping area. According to the utility model, working cycles of automatic feeding, detection, discharging and the like can be realized, compared with manual detection, the detection efficiency is improved, the participation of operators is not needed, and the influence on the bodies of the operators is avoided, so that the device can adapt to detection in various environments.

The invention discloses an intelligent fault prediction method and system for a rotary cutter based on multi-sensor analysis, and relates to the technical field of fault prediction. Comprising the steps that in a working period of the rotary cutter, audio data of the position of a rotary cutter are collected, the audio data cover audio signals generated in the wood rotary cutting process of the rotary cutter, and the working period is defined as the time needed by a clamping shaft to rotate by a circle; the audio data is mapped into an oscillogram and a waveform curve is formed, the horizontal axis of the oscillogram representing time. According to the method, the abnormal vibration mode is recognized by analyzing the feature points in the audio waveform curve, and the operation state of the rotary cutter is comprehensively monitored on the basis of the temperature change captured by the thermal imaging technology and the operation state of the rotary cutter captured by the visual image technology; potential faults of the rotary cutter of the rotary cutter in the operation process are predicted, and the service life of the rotary cutter is prolonged to a certain extent.

A method for modelling a coating process including a plurality of coating parameters, includes the steps of: dispensing, by the coating process and during K work cycles, a coating on each of K pieces of objects to thereby obtain K pieces of coatings; recording, during each of the K work cycles, coating variable values of p coating parameters at M instances to thereby obtain recording results; and measuring at least one coating property at m locations of each of the K pieces of coatings to thereby obtain measurement results. The method is characterized by the step of determining a digital twin of the coating process on the basis of the recording results and the measurement results. By using results from a large amount of classical quality control measurements together with corresponding coating parameter information, a digital twin of the coating process can be determined through statistical processing of such big data. The digital twin may be used either for automatic adjustment of the coating parameters to obtain an improved coating quality, for prediction of the coating quality right after a work cycle to obtain an improved quality control, or for both.

The invention relates to an equipment state monitoring method and device, equipment, a storage medium and a program product. The method comprises the following steps: acquiring a real-time torque signal of target equipment in a current working cycle period, and determining a state monitoring result of the target equipment based on the real-time torque signal in the current working cycle period. The method can improve the accuracy of the state monitoring result of the target equipment.

The invention discloses an intelligent intermittent pumping control method and system for an oil and gas field based on full localization of a swan Mongolian system, and the method comprises the steps: controlling an oil pumping unit to enter a test run state in a first preset time length, a second preset time length and a third preset time length, and then carrying out the effective judgment of an oil pumping load parameter, a liquid production capacity and an oil extraction water content in the test run state; according to the invention, on the basis of monitoring the exploitation condition of the oil well, the influence of the actual operation condition of the oil pumping unit is further considered, and the debugging calculation is carried out based on the obtained pilot operation parameters of the oil pumping unit, so that the working efficiency of the oil pumping unit is improved. Therefore, the reasonable and reliable intermittent pumping work period can be determined, and the intermittent pumping work efficiency of the pumping unit is improved. Moreover, in the process that the oil pumping unit operates according to the intermittent pumping work cycle, the fullness degree and the oil pumping operation parameters of the oil pumping unit are monitored in real time so as to adjust the real-time power state of the oil pumping unit, and therefore the intermittent pumping work efficiency of the oil pumping unit is improved.

The invention relates to the technical field of intelligent control and predictive maintenance of heating water heaters, in particular to a wind pressure switch control system and method for a heating water heater. The method comprises the following steps of: extracting a starting pressure curve slope, a steady-state pressure fluctuation frequency spectrum entropy and a shutdown pressure decay time constant by collecting a time sequence pressure signal in a working period of a fan so as to generate a dynamic feature vector; comparing the vector with a preset reference health vector by the system, and resolving the health state confidence and the state deviation drift rate of the system in real time; when the health confidence coefficient is lower than a safety threshold value or the deviation drift rate is too high, the system executes forced safety locking; if the health degree is slightly reduced, the pre-purging time of the fan is actively prolonged as compensation; according to the method, conversion from fault response to predictive maintenance is achieved, early performance degradation symptoms such as fan abrasion and air duct dust deposition can be recognized in advance, post-maintenance is converted into beforehand intervention, and the fault rate and maintenance cost are effectively reduced.

The invention discloses a path planning method and full-automatic carrier tape braiding packaging equipment, and relates to the technical field of automatic packaging. The method comprises the following steps: acquiring an initial position coordinate of a mechanical arm and identifying a target position of a to-be-grabbed semiconductor device; constructing a feasible position set, wherein the feasible position set comprises all candidate positions which can be safely reached and have no collision risk; traversing the set, calculating the distance from the current position to each candidate position, and selecting the nearest position as a next target; removing the data from the set and updating the set; and when the mechanical arm reaches the target position, grabbing is executed, the final position is recorded, then the position is set as the initial position of the next mechanical arm, and the steps are repeated till all tasks are completed or the target position is empty. When the position of the device in the vibration disc changes or a new device capable of being grabbed appears, the path can be automatically re-planned, the grabbing strategy can be automatically adjusted, invalid movement can be reduced, the work period is shortened, and the production efficiency of the full-automatic carrier tape braiding packaging equipment is remarkably improved.

The invention discloses a display which comprises a backlight module and a time sequence controller. The backlight module comprises a target backlight block and an adjacent backlight block, and the adjacent backlight block is adjacent to the target backlight block. The time schedule controller is coupled to the backlight module and generates an initial work cycle of a target backlight block and an initial work cycle of an adjacent backlight block according to pixel data of the image frame. And generating an update work cycle of the target backlight block at least according to the initial work cycle of the target backlight block, the initial work cycle of the adjacent backlight block, the weight value of the target backlight block and the weight value of the adjacent backlight block. And the backlight module adjusts the brightness of the target backlight block according to the updating work period.

The invention discloses a rotor type gas energy engine and a working method thereof, and the rotor type gas energy engine comprises a rotor shell which is internally provided with a cylindrical rotor chamber; the rotor is arranged in the rotor chamber and comprises a rotor shaft and at least one rotor wing arranged on the rotor shaft, and the rotor chamber is divided into rotor cavities with the same number as the rotor wings by the rotor; the airflow inlet and outlet channel comprises at least one air inlet channel and at least one air outlet channel which are arranged on the rotor shell and are equal in number; the compressed air source mechanism is connected with the air inlet channel; and the electric control system is used for controlling start and stop of the air inlet valve and the exhaust valve and the air flow provided by the compressed air source mechanism so as to be matched with rotation of the rotor to complete a working cycle through the three processes of air inlet, acting and exhaust. The rotor type gas energy engine is small in vibration, low in noise, selectable in low speed, medium speed and high speed, fast in stepless speed regulation response, and capable of effectively improving work efficiency, meeting the requirements of low rotating speed, high torque and other different rotating speeds and torques, and achieving stable operation of the engine.

The invention discloses a combined air inlet two-stage combustion six-stroke engine, and relates to the field of power energy. In order to overcome the defects that in the prior art, a six-stroke engine is insufficient in gas inlet in the secondary combustion stage, poor in oil-gas mixing quality and low in combustion efficiency, according to the technical scheme, the six-stroke engine comprises a combustion chamber assembly, a fuel injector, a transmission mechanism and a gas distribution mechanism; the gas distribution mechanism comprises a gas inlet pipeline, an exhaust pipeline, a gas storage cavity, a gas inlet pipeline valve, a scavenging duct and a scavenging duct one-way valve, the working cycle of the engine comprises two times of gas inlet and two times of oil injection combustion acting, and the gas storage cavity releases gas to supplement fresh air in the combustion chamber in the second time of gas inlet. The combustion chamber assembly comprises a cylinder, a piston and a cylinder cover, the piston reciprocates in the cylinder, and the cylinder and the cylinder cover are closed to form a combustion chamber. The invention is suitable for improving the heat efficiency and output performance of the engine, especially for an internal combustion engine power system requiring multiple combustion work.

The invention discloses a diesel engine cylinder cover vibration signal inversion virtual key phase pulse and whole period feature extraction method, and belongs to the field of mechanical signal processing. Collecting a diesel engine cylinder cover vibration signal; based on the autocorrelation function of the signal smooth envelope energy gradient, identifying the whole-cycle signal length of the diesel engine; judging whether a reference signal exists or not, if yes, identifying a key phase triggering position based on interpolation alignment and a cross-correlation function, and if not, intercepting a single full-period signal and storing the single full-period signal as the reference signal; inverting the virtual key phase pulse signal so as to intercept a required full-period signal; typical signal features are extracted, and a whole-period signal feature parameter set is constructed. The method overcomes the problem of difficult key phase pulse signal acquisition caused by difficult installation of a key phase sensor on a high-power-density diesel engine, fully considers the quasi-periodic characteristics of the working cycle of the diesel engine, can accurately identify the whole cycle length, efficiently inverts the virtual key phase pulse signal, and improves the accuracy of the key phase pulse signal. And full-period feature extraction of the vibration signal of the diesel engine under the keyless phase sensor is realized.

The invention discloses a compressor fault judgment method and device, and the method comprises the steps: obtaining the operation parameters of a compressor at a plurality of time points in a preset time period, and obtaining a pressure-time corresponding relation, obtaining a division relationship of a plurality of work cycles in a predetermined time period; according to the pressure-time corresponding relation and the division relation of the multiple work periods, the actual indicator diagram of each work period of the compressor in the preset time period is determined; the actual indicator diagram of each work period is compared with a reference indicator diagram obtained in advance, the state of the compressor is judged according to the comparison result, the state comprises a normal type or a fault type, and the actual indicator diagram of the compressor can be obtained through compressor data obtained in real time; and the real-time working condition of compression is judged by comparing the real-time indicator diagram with the reference indicator diagram, so that the production loss caused by the bumping of the compressor is avoided, the operation cycle of the compressor is prolonged, and the maintenance cost of the compressor is reduced.

The invention discloses a hydraulic control system of an excavator and the excavator. The hydraulic control system comprises a hydraulic pump, a supporting leg device, a working device and a controller. The working device comprises a working hydraulic valve group, the supporting leg device comprises a supporting leg frame valve group and a supporting leg claw, and the controller is connected with the control end of the working hydraulic valve group and the control end of the supporting leg frame valve group; the controller outputs a first signal to the working hydraulic valve group, and the bucket is inserted into the ground; a second signal is output to the working hydraulic valve group, and the working device provides upward boosting force along the slope surface; the controller outputs a third signal to a supporting leg frame valve group, and a supporting leg claw is lifted; a fourth signal is output to a supporting leg frame valve group, and a supporting leg claw presses the ground downwards; in a single working cycle of slope climbing, a first signal, a third signal, a second signal and a fourth signal are output in sequence; and after the excavator arrives at the target operation site and the controller outputs a fourth signal, slope-holding excavation operation is carried out. According to the invention, climbing and hill-holding operation of ramps with the gradient of less than 35 degrees can be realized.

Start-stop automatic system (101) for an engine (102), comprising a detection device (105) for detecting a recurring work cycle (130) of a work vehicle (100) based on at least one operating parameter; and a switching control (107) for determining a switching-off time (172) of the engine (102) based on the operating parameter within the work cycle (130).

The invention discloses a shafting vibration characteristic analysis method and system based on elastohydrodynamic lubrication, and relates to the technical field of mechanical engineering.The method comprises the steps that the entrainment speed, the time-varying curvature radius and the contact load at a contact point in a gas distribution-oil supply cam pair are determined; respectively inputting the entrainment speed, the time-varying curvature radius and the contact load at the contact point into a friction analysis model in an elastohydrodynamic lubrication state, and calculating a time-varying curve of the total interfacial friction force of the gas distribution-oil supply cam pair in the whole working cycle; based on time-varying friction excitation corresponding to any moment in the change curve, determining a system excitation vector of the gas distribution-oil supply cam pair by using interface friction as a key connection quantity through experimental testing and simulation modeling technologies; according to the system excitation vector and the structure parameters of the camshaft system, establishing a camshaft system torsional vibration characteristic coupling analysis model considering the interface elastohydrodynamic state; and solving the shaft system torsional vibration differential equation set to obtain the influence rule of the time-varying friction on the instantaneous vibration characteristics of the camshaft system.

The invention relates to the field of carrier steering control, in particular to a non-return transmission device for a carrier and a control system thereof.The non-return transmission device comprises a large bevel gear, a small bevel gear, a large straight tooth, a small straight tooth, a worm and a turbine which are sequentially meshed, the large bevel gear is fixed to an input shaft, the small straight tooth and the worm are coaxial, the turbine is fixed to an output shaft, and when the worm drives and the turbine drives, the large straight tooth and the small straight tooth are coaxial. Clockwise and anticlockwise rotation of the input shaft is transmitted to the output shaft; when running external force acts on the turbine through the output shaft to try to reversely drive the worm, force flow is cut off through the self-locking effect of the worm and the turbine, non-return of the output shaft relative to the input shaft is achieved, and hand beating and high-speed shimmy are weakened. The input shaft and the output shaft are coaxially arranged through a coaxial device, and the gears, the worm and the worm gear are installed in the shaft box. The control system is provided with an angular speed sensor, a temperature sensor, a vibration sensor, a working cycle number sensor and the like, signals are input into an electronic control unit, and state monitoring and fault early warning are carried out through the electronic control unit.

The invention provides a pile foundation excavation method and equipment, and belongs to the technical field of foundation pit engineering, the pile foundation excavation equipment comprises an integrated multi-head drilling machine, the integrated multi-head drilling machine can be fixedly mounted at a center hole through a bottom expansion locking mechanism, a plurality of holes can be formed at a time when the integrated multi-head drilling machine works, and the integrated multi-head drilling machine resets and rotates by a certain angle after working once. The drilling work is repeated, then an annular groove is drilled after multiple times of work, a rock core in the annular groove is taken out through a coring tool, then the rock and the mountain in the central area can be separated and taken out through a coring barrel, and the slag removal work is completed; by means of the expansion locking mechanism arranged at the bottom of the drilling machine, the integrated multi-head drilling machine can be fixed to a center positioning hole, the situation that equipment deviates in the working process and influences the overall drilling effect is avoided, the multiple drilling machines are arranged together, drilling work of multiple holes can be conducted at the same time, automatic drilling is achieved, the working efficiency is higher, and the drilling efficiency is improved. Meanwhile, workers do not need to go down to operate, and safety and reliability are achieved.

A rock drilling rig, comprising a carriage, a rock drilling machine, a control unit and an interface for receiving at least one electrical battery pack, wherein the control unit is configured to control the rock drilling rig to perform work tasks according to a work cycle, and the control unit is configured to control operating power from any electric battery pack provided in the interface, wherein the interface is configured to receive a plurality of independent battery packs and the control unit is configured to selectively control operating power from any electrical battery packs provided in the interface.

The invention discloses a steam control method, device and equipment of an evaporator and a storage medium. The method comprises the steps that the current actual steam generation amount of an evaporator in a water pump working period is obtained; the current designed steam generation amount of the evaporator in the working period of the water pump is obtained; calculating the current deviation percentage of the designed steam generation amount and the actual steam generation amount; if the absolute value of the current deviation percentage is larger than a preset threshold value, the target duty ratio of working of the water pump is obtained through a PID adjusting algorithm, and the water pump is made to operate at the target duty ratio in the next working period; and if the absolute value of the current deviation percentage is smaller than or equal to the preset threshold value, the water pump is controlled to operate at the current working duty ratio of the water pump in each later working period. When the deviation between the actual steam generation amount and the designed steam generation amount of the evaporator is not within the range below the preset threshold value, the new working duty ratio of the water pump can be obtained through the PID adjusting algorithm to adjust inlet water, the deviation is corrected, and the steam amount is more accurate.

The present invention discloses a hydraulic system fault warning method and device based on digital twins, and relates to the field of hydraulic warning technology. The method includes: constructing a digital twin model based on the physical structure and historical data of the hydraulic system; deploying sensors to collect monitoring data of the hydraulic system in real time and fitting it into the model; activating a fault warning module to determine the working cycle; integrating monitoring data to construct data of each cycle; configuring collaborative relationships according to workload and control strategy; fitting relationships to obtain monitoring fitting relationships; identifying anomalies based on fitting relationships and generating fault warning information. The method solves the technical problem that existing early warning methods often fail to accurately predict and promptly respond to potential faults within the hydraulic system, resulting in untimely fault handling and affecting the stability and operating efficiency of the hydraulic system. The method achieves the effect of fitting monitoring data based on collaborative relationships, ensuring the accuracy and timeliness of fault warnings, and improving the stability and operating efficiency of the hydraulic system.

The invention discloses a gearbox fault diagnosis method based on a speed fluctuation periodic ring diagram, and the method comprises the following steps: 1, collecting a motor current signal, a motor instruction rotation speed signal and a motor rotation angle signal through an RV gearbox fault simulation experiment table, and enabling the fault type to be a sun gear single tooth crack wear fault; 2, setting a window parameter set in a certain range; 3, at a fixed moment, carrying out high-order multiple compression transformation on the fault motor current signal, and further extracting an actual current instantaneous frequency; 4, converting the actual current instantaneous frequency into an actual motor speed; 5, calculating speed fluctuation; 6, setting a speed fluctuation threshold value, and traversing all moments to obtain an optimal window parameter set; 7, self-adaptive high-order multiple compression transformation is carried out, and motor speed fluctuation is calculated in a self-adaptive mode in the complete work period; and 8, drawing a speed fluctuation periodic loop graph based on the motor rotation angle signal. According to the method, the gear box fault is visually displayed by detecting the abnormal speed fluctuation synchronous with the fault tooth meshing period, the problems that the resolution of traditional time-frequency analysis is low, distortion is caused by fixed window parameters, and the spectral analysis result is unreliable are solved, and the gear box fault can be more visually and accurately diagnosed.

The invention discloses a network upgrading method based on a ZYNQ chip bare computer program, which relates to the technical field of chips and comprises the following steps: S1, constructing an upgrading mirror image for network upgrading and a user mirror image containing the ZYNQ bare computer program based on original chip parameters; s2, starting a target ZYNQ chip, and receiving a new version of the user mirror image through a network to update the new version to the user mirror image; s3, jumping back the version to the user mirror image based on a rollback judgment mechanism if the upgrade mirror image is attacked when the upgrade mirror image is used; and S4, when the updating time reaches the work cycle, stopping updating, if the updating of the user mirror image is not completed, judging that abnormal attacks exist, and notifying manual processing. Compared with the prior art, the method has the advantages that the upgrading mirror image and the user mirror image are constructed by using the original chip parameters to perform alternate self-inspection and verification work, the system can quickly roll back to the security state when attacked, and the method has the advantages of enhancing the system security and realizing data protection.