48 results about "Vibration threshold" patented technology

The invention relates to the technical field of industrial automatic detection, in particular to a collaborative visual detection method and system for an SMT production line, and the method comprises the steps: obtaining a beat reference signal which is synchronous with the periodic motion beat of a mounting head in the SMT production line; determining a stable acquisition window of which the vibration intensity is lower than a preset vibration threshold value; in the stable acquisition window, sending a synchronous trigger instruction to a plurality of visual inspection cameras deployed on the SMT production line in a unified manner; performing space-time alignment processing on the multi-path image data; performing motion blur correction processing on the image data subjected to the space-time alignment processing; and carrying out validity verification on the result of the space-time alignment processing, and executing a preset exception processing strategy when the verification result indicates that the verification fails. According to the invention, the beat reference signal synchronized with the motion beat of the mounting head is directly obtained, and the opportunity decision of image acquisition and the real-time vibration monitoring result are deeply bound, so that the double strategies of beat synchronization and vibration avoidance are realized.

The invention relates to a method and equipment for detecting deflection of a galvanometer motor in a medical galvanometer scanning system. The method mainly comprises the steps that a dynamic threshold value library is established, a dynamic threshold value set matched with a current scene is called, and the dynamic threshold value set comprises an angle error threshold value, a vibration threshold value and a driver temperature threshold value; acquiring inner ring control signals in real time, wherein the inner ring control signals at least comprise a motor angle error signal, a vibration signal and a driver temperature signal; carrying out quantitative fusion on the collected signals through a multi-signal weight fusion algorithm and carrying out preliminary judgment; and comparing the preliminarily judged signals with a dynamic threshold group, judging whether each signal meets a corresponding threshold condition or not, and if all the signals meet the corresponding threshold condition, judging that the galvanometer motor deflects in place. Compared with the prior art, the precision is remarkably improved, the normal skin burn risk caused by position deviation is avoided, and the high-precision safety requirement of a medical scene is met.

The invention discloses a rotor dynamic balance method giving consideration to vibration threshold control and counterweight vibration elimination efficiency, and the method comprises the steps: obtaining an original vibration signal and a key phase signal of a rotor through data collection equipment, and obtaining a vibration signal and a key phase signal after a trial weight is added; the amplitude and phase of an original unbalance signal of the rotor and the amplitude and phase of an unbalance signal after the trial weight is added are obtained after analysis and calculation, an optimization function with the maximum comprehensive vibration of balance weight reduction under the balance rotating speed as the target is constructed, and rotor dynamic balance optimization calculation is carried out based on a raccoon optimization algorithm. The balance weight giving consideration to the rotor vibration threshold constraint and the balance weight efficiency is obtained, and the maximum vibration is reduced through the minimum balance weight under the condition that the vibration control target is met; according to the method, the problem that in the traditional dynamic balance mass calculation process, a single-target optimization algorithm represented by minimum residual vibration, maximum vibration minimization and the like is difficult to consider the residual vibration amplitude and the counterweight balance efficiency at the same time is solved.

The invention belongs to the technical field of automobile braking, and provides an active adjusting method and system for the mode of a brake pedal and application, and the method comprises the steps that a vibration database is constructed, and preset vibration threshold values under different vehicle working conditions and corresponding brake pedal mode adjusting strategies are stored in the vibration database; a brake pedal vibration signal is collected in real time and processed into a vibration characteristic value, and the vibration characteristic value is compared with a preset vibration threshold value in a vibration database under the current working condition; based on the comparison result, calling a corresponding modal adjustment strategy, generating an adjustment instruction and executing the adjustment instruction to actively change the mass distribution of the brake pedal and dynamically shift the intrinsic mode of the brake pedal; and the steps are executed circularly, and self-adaptive vibration suppression is carried out under different working conditions. Resonance is avoided by dynamically adjusting the mode of the brake pedal, and vibration suppression and full-working-condition adaptation can be achieved.

The invention relates to the technical field of shock absorption structures, in particular to a shock absorption and isolation platform locking control device. A locking mechanism of the shock absorption and isolation platform locking control device comprises a main body, a driving piece and at least one locking piece. The locking piece is movably connected with the main body and at least provided with a locking position which abuts against the first plate body to limit the first plate body to move relative to the second plate body and an unlocking position which is separated from the first plate body; the driving piece is connected with the main body and is used for driving the locking piece to change the position between the locking position and the unlocking position; the monitoring sensor is used for monitoring environment vibration; and the controller is used for controlling the driving piece to act to drive the locking piece to unlock when the environment vibration monitored by the monitoring sensor exceeds a vibration threshold value or an earthquake early warning signal is received. The operation stability of the seismic mitigation and isolation platform can be improved, the seismic mitigation and isolation platform can be unlocked instantly during an earthquake, and therefore the seismic mitigation and isolation function of the seismic mitigation and isolation platform can be effectively guaranteed.

The invention discloses a method for detecting abnormal vibration of a range hood and lampblack treatment equipment adopting the method, and belongs to the technical field of kitchen appliances. The method comprises the following steps: S1, data acquisition: acquiring a rotating speed n and a vibration amplitude; s2, judging the stability of the rotating speed, namely judging whether the rotating speed is stable or not, if so, executing the step S3, and if not, executing the step S4; s3, carrying out interval classification on the rotating speed, respectively carrying out vibration threshold comparison, and if the vibration amplitude is greater than the vibration threshold of the corresponding interval, triggering a vibration abnormity alarm; step S4, acquiring a continuous unstable time length T; if T is greater than or equal to Tth, executing the step S5, and if T is less than Tth, judging that transient interference exists; and S5, judging whether the rotating speed exceeds the limit or not, if yes, starting speed reduction protection and triggering a user alarm, and if not, returning to the step S4. By synchronously monitoring the rotating speed and the vibration data and combining rotating speed stability judgment and inter-partition vibration threshold value comparison, misjudgment is prevented, and therefore the use safety is improved.

This wire break detection device (20) in at least one cable (10) of a civil engineering structure comprises: – a set of acoustic sensors (14a) intended to be fixed on a cable (10) or on anchor points (11, 12) of the cable (10) so as to receive an acoustic wave when a wire or strand of the cable (10) breaks; the acoustic sensors (14a) being capable of capturing this acoustic wave; and – an analysis unit (17) capable of receiving detection information of said acoustic wave by the acoustic sensors (14a) and of locating a wire break in the cable (10) according to the locations of the acoustic sensors (14a) which detected the acoustic wave.The acoustic sensors (14a) are grouped into clusters (16a), each cluster (16a) comprising a monitoring unit (15) equipped with: – a signal acquisition card for the signals from the acoustic sensors (14a); – a memory (18) for recording and time-stamping the signals from the acoustic sensors (14a) for a predetermined period before and after exceeding an acoustic vibration threshold; and – means for transmitting the recorded signals to the analysis unit (17); the analysis unit (17) being capable of receiving all the signals recorded by the different monitoring units (15) of the same cable (10) and of characterizing and locating a wire break based on the shape of the signals. Figure for the abbreviation: Fig 1.

The application discloses a kind of ladder door operating speed control method, device, electronic equipment and storage medium, comprising: the vibration signal of ladder door operation is collected, vibration value is extracted to vibration signal, speed adjustment coefficient is determined based on vibration value, speed adjustment amount is calculated using speed adjustment coefficient, vibration value and preset target vibration threshold, preset reference operating speed and speed adjustment amount are used to calculate target operating speed, control ladder door to operate at target operating speed, realize the real-time perception of mechanical vibration state of ladder door, and target vibration threshold is calculated as reference based on this, to dynamically optimize operating speed, can maximize door opening efficiency under the premise of guaranteeing smooth operation.

The application provides an active vibration control system and method. By collecting displacement, velocity and acceleration information of the lifting rod, the transverse moving rod and the overturning shaft, and synchronously collecting the amplitude of external vibration disturbance acting on the trolley structure; based on the connection mode of the trolley rod, the joint friction characteristics, the component inertia parameters and the coupling torque parameters between joints, a multi-degree-of-freedom mechanical model of the trolley is established or updated; the real-time state input of the state collection step is input into the mechanical model, the coupling vibration amplitude of each degree of freedom under the current disturbance is calculated, and vibration evaluation is performed; a multi-axis cooperative control algorithm is used to determine a set of coordinated control quantities for reducing the coupling vibration amplitude; the control quantities obtained in the control quantity generation step are output to the lifting rod, the transverse moving rod and the overturning shaft at the same time to drive the coordinated action of each degree of freedom to suppress vibration, so that the vibration amplitude of the corbel formwork trolley is kept within the preset vibration threshold.

The invention discloses a power transmission line aeolian vibration early warning method and system, and relates to the technical field of power transmission line monitoring, and the method comprises the steps: obtaining a plurality of vibration training data, carrying out the data preprocessing of each vibration training data, generating a vibration feature set, training a preset initial vibration prediction model through employing the vibration feature set, and carrying out the early warning of the aeolian vibration. The method comprises the steps of obtaining a corresponding target vibration prediction model, obtaining to-be-measured vibration data, carrying out vibration prediction on the to-be-measured vibration data through the target vibration prediction model to obtain a plurality of predicted vibration amplitudes, and generating a vibration alarm signal when any predicted vibration amplitude is greater than or equal to a preset vibration threshold value. The technical problems that in the prior art, aeolian vibration early warning is carried out on an output line mainly by deploying a vibration sensor on a power transmission line, but the future vibration trend of the power transmission line cannot be predicted, the power transmission line is difficult to protect before the aeolian vibration risk, and the reliability of power grid operation is reduced are solved.

The invention discloses a steam turbine bearing bush vibration control method and device, electronic equipment and a storage medium, according to the steam turbine bearing bush vibration control method and device, due to the fact that bearing bush vibration and rear cylinder exhaust steam temperature two-parameter cooperative monitoring is adopted, when vibration exceeds a threshold value, the water spraying flow and the working back pressure are synchronously adjusted, and when the exhaust steam temperature exceeds the standard, reverse deviation correction is executed; a dynamic balance mechanism of the vibration threshold value and the exhaust steam temperature upper limit is established through cyclic optimization, so that the problems that the exhaust steam temperature exceeds the standard or the vibration control is not up to the standard due to the fact that a single parameter adjustment strategy is adopted and the dynamic balance mechanism of the vibration threshold value and the exhaust steam temperature upper limit is not established in an existing bearing bush vibration control method can be solved. The technical effects that dynamic balance of the bearing bush vibration and the exhaust steam temperature is achieved, it is guaranteed that the bearing bush vibration and the exhaust steam temperature are both in a safe range, and then the running stability and reliability of the steam turbine are improved are achieved.

The present application relates to the technical field of vibration monitoring, and particularly relates to a rotating machinery vibration protection method and system based on particle swarm optimization, comprising: a polynomial fitting temperature compensation algorithm, which is combined with real-time environmental temperature and sensor output voltage to obtain a corrected load torque and synchronously calculate a measured vibration amplitude; a variational mode decomposition layer number is configured according to a real-time rotor speed to obtain a pretreated vibration signal, the number of iterations of independent component analysis is adjusted according to the load torque, the pretreated vibration signal is separated to obtain an independent vibration component, and a feature vector is generated; network parameters of an adaptive resonance theory are calibrated based on a particle swarm optimization algorithm to obtain a normalized feature vector, the similarity with a fault feature template is calculated, a diagnosis result is output, the deviation of the measured vibration amplitude from a normal vibration threshold value is calculated, and compensation is performed according to the diagnosis result and the deviation. The present application effectively improves the fault diagnosis accuracy of the rotating machinery vibration protection system through multi-working-condition adaptive diagnosis.

The invention discloses a power consumption control method and system applied to monitoring vibration of a door lock, and relates to the field of time registers or attendance registers, in the method, a micro-motion sensor module extracts a vibration characteristic value from a vibration signal; when it is determined that the vibration characteristic value is larger than a preset vibration threshold value, the micro-motion sensor module generates a trigger signal and sends the trigger signal to the wireless communication module; the wireless communication module generates and sends a wake-up signal; the wake-up control module receives and analyzes the wake-up signal to obtain address information of target equipment; the wake-up control module performs matching verification on the target device address information and a locally stored device address; when the matching verification is successful, the wake-up control module sends a wake-up command to the security sensor module; the security and protection sensor module is switched from a dormant state to a working state and executes a preset security monitoring task; and when it is determined that the preset safety monitoring task is completed, the security and protection sensor module is switched to a dormant state. The power consumption of the system is reduced, and the electric energy waste is reduced.

The invention provides an active vibration reduction control system and method. The method comprises the following steps: acquiring displacement, speed and acceleration information of a lifting rod, a transverse moving rod and a turnover shaft, and synchronously acquiring an external vibration disturbance amplitude acting on a trolley structure; establishing or updating a multi-degree-of-freedom mechanical model for the trolley on the basis of a connection mode of trolley rod pieces, joint friction characteristics, component inertia parameters and inter-joint coupling torque parameters; inputting the real-time state in the state acquisition step into the mechanical model, calculating the coupling vibration amplitude of each degree of freedom under the current disturbance effect, and performing vibration evaluation; determining a coordination control quantity set for reducing the coupling vibration amplitude by adopting a multi-axis coordination control algorithm; and the control quantity obtained in the control quantity generation step is output to the lifting rod, the transverse moving rod and the overturning shaft at the same time so as to drive the degrees of freedom to cooperatively act to restrain vibration, and the vibration amplitude of the bracket formwork trolley can be kept within the preset vibration threshold value.

The invention relates to the technical field of rail transit locomotives, solves the problems that in the prior art, fault features are difficult to completely capture, and fault signals such as axial movement and radial vertical looseness are prone to being missed, so that the fault missed judgment rate is increased, and particularly relates to an intelligent monitoring method and system for a rail transit locomotive power collection locomotive ventilator. The method comprises the following steps of: acquiring modal simulation data containing triaxial load values and a load amplitude interval of the ventilator and a historical fault sample containing load data and a load threshold value, and then acquiring and preprocessing triaxial vibration data of the ventilator in real time, the modal simulation data based on the ventilator and the historical fault sample; the method can completely capture the vibration fault characteristics of the ventilator in a three-dimensional space, achieves the precise adaptation of a vibration threshold value and a load condition, improves the comprehensiveness and precision of fault monitoring, effectively avoids the problems of normal vibration misjudgment in a high-load condition and abnormal vibration missed judgment in a low-load condition, and improves the reliability of fault monitoring. And the fault monitoring misjudgment rate and the missed judgment rate are greatly reduced.

The invention discloses a real-time early warning method and system for multi-mode monitoring data fusion of an escalator driving main shaft, and relates to the technical field of elevator monitoring and early warning. Comprising the steps that basic parameter information of a target escalator main shaft is obtained, basic information items are obtained, and the basic information items are used for representing use parameters and contrast parameters of the target escalator main shaft; and obtaining a reference threshold value of the target escalator main shaft based on the basic information item. According to the method, after a reference vibration threshold value and a reference temperature threshold value which are matched with working conditions are calculated through a reference vibration threshold value calculation formula and a reference temperature threshold value calculation formula respectively, a vibration correction factor and a temperature and humidity correction factor are created, and the reference vibration threshold value and the reference temperature threshold value are calculated respectively; on the basis of different working conditions of the main shaft of the escalator, threshold adjustment is carried out according to the real-time environment, early warning is carried out according to the threshold after threshold adjustment, and the real-time early warning effect based on multi-modal monitoring data is achieved.

The invention provides a steel wire rope reel anti-falling device which comprises a supporting seat, a monitoring part, a control part and an alarm part, the supporting seat is arranged below a steel wire rope reel and used for bearing the falling steel wire rope reel, the monitoring part comprises a vibration sensor, and the vibration sensor is arranged on a bearing seat of the steel wire rope reel. The monitoring part is used for acquiring vibration information on the bearing seat, the control part is connected with the monitoring part and the alarm part, and the control part is used for acquiring the vibration information and controlling the alarm part to give an alarm when the vibration information is larger than a preset vibration threshold value. The vibration sensor is arranged to obtain the vibration information of the bearing seat, the control part controls the alarm part to give an alarm when the vibration information exceeds the threshold value, real-time monitoring and early warning of the falling risk of the steel wire rope reel are achieved, and the operation safety of equipment is improved. The supporting seat is arranged below the steel wire rope reel, so that a bearing effect can be achieved when the steel wire rope reel falls off, the steel wire rope reel is prevented from further falling off and rolling over, and the damage of accidents is effectively reduced.

The application relates to a power stealing prevention method and system of a meter box, and relates to the field of power stealing prevention, which comprises the following steps: step 100, collecting a door lock state of the meter box; step 101, collecting a vibration amplitude of the meter box when the door lock state is consistent with a preset locking state; step 102, determining a vibration duration based on the vibration amplitude if the vibration amplitude is greater than a preset vibration threshold value; step 103, determining an interference coefficient by combining the vibration amplitude and the vibration duration; and step 104, generating and displaying power stealing prompt information in response to the interference coefficient. The application has the effects of improving the safety of the meter box and reducing the occurrence of power stealing behaviors.

The invention relates to the technical field of aero-engine data processing, in particular to an aero-engine complete machine vibration data correction method based on an operation state. The method comprises the following steps: S1, setting initial parameters; s2, acquiring vibration data to be corrected, corresponding rotating speed data and time data; step S3, based on the rotating speed data and the time data, performing engine steady state and unsteady state identification to extract a transition point, and dividing vibration data into a steady state segment and an unsteady state segment; s4, defining a steady-state vibration threshold value, and correcting steady-state data; s5, defining an unsteady state vibration threshold value, and correcting unsteady state data; and S6, carrying out overall correction on the vibration data to obtain corrected vibration data. According to the method, data state identification, data segmentation and quantitative correction of the whole machine vibration data under different distortion degrees are realized based on the distribution characteristics of the historical data of the engine, and the effectiveness of the vibration data is greatly improved.

An intelligent control method for a vehicle-mounted garbage can is proposed, which includes: detecting whether the vibration level of the garbage can reaches a set vibration threshold; when the vibration level of the garbage can reaches the set vibration threshold, the garbage can enters a working mode, in which the fullness of the garbage can is collected every first period, the temperature inside the garbage can is collected every second period, and the vibration level of the garbage can is continuously detected under high power supply current; when the vibration level of the garbage can does not reach the set vibration threshold, the garbage can enters a sleep mode, in which the collection of the fullness of the garbage can and the temperature inside the garbage can is stopped, and the vibration level of the garbage can is continuously detected under low power supply current. An intelligent control system for a vehicle-mounted garbage can is also proposed, which includes a three-axis sensor, an ultrasonic sensor group, a temperature sensor, and a controller, wherein the controller is configured to control the components of the system to perform the above method.

This application discloses a rolling mill vibration control method and related equipment, relating to the field of automation control technology. The method includes: acquiring the current rolling process parameters of the target stand during cold rolling; inputting the current rolling process parameters into a vibration prediction model to obtain the vibration acceleration prediction value of the target stand, wherein the vibration prediction model is an ensemble model trained based on historical datasets; when the vibration acceleration prediction value is greater than a preset vibration threshold, determining a target process parameter adjustment strategy for the current rolling process parameters based on the correlation between the rolling process parameters and vibration acceleration represented by the vibration prediction model; and adjusting the current rolling process parameters of the target stand according to the target process parameter adjustment strategy.

Switching a position of a dual modality coupling module to reduce vibrations in a machine includes simulating the propagation of vibrations through the machine using a digital twin model. The simulation is used in determining vibration levels at points of interest in the machine and a recommendation is generated to use the dual modality coupling module based on the vibration levels and the defined vibration threshold. If the vibration levels fail to satisfy the vibration threshold, the dual modality coupling module is positioned at the mechanical coupling position. Upon determining that the vibration levels satisfy the defined vibration threshold, a signal is generated to regulate a current flow to magnetic coils of the dual modality coupling module. The current flow induces temporary magnetism in the magnetic coils. As a result, a mechanical coupling position is switched to a magnetic coupling position.

The application provides a kind of oil and gas pipeline safety early warning system and method based on small sample data characteristics, relating to oil and gas pipeline warning field, the system includes vibration sensor, station transmission center and terminal control center;Vibration sensor is arranged along the pipeline, for detecting vibration signals in the direction along the pipeline and the vertical direction;Station transmission center is used to obtain the electric signal sent by vibration sensor, and transmit the electric signal to terminal control center;Terminal control center includes central processing unit, for matching the received electric signal with the data in pre-stored abnormal sample database, and judging whether the vibration signal is abnormal according to the preset baseline vibration threshold;A historical data analysis module is also provided in the central processing unit, for small sample data augmentation on abnormal samples, to enrich the abnormal sample database.The application can accurately and efficiently determine the running state of oil and gas pipeline, and detect abnormal events.

The invention relates to the technical field of illumination, in particular to a self-adaptive light-emitting identification system based on vibration induction, which comprises a plurality of vibration induction modules arranged in a target area, a control module and a light-emitting array, when the ball falls into a target area, the vibration sensing module is used for detecting an impact vibration signal generated by hitting of the ball; the control module is in signal connection with the vibration sensing module and is used for receiving the impact vibration signal fed back by at least one vibration sensing module and determining the hitting position and the impact strength of the ball according to the impact vibration signal; lightening the light emitting array according to a corresponding light emitting mode based on the ball hitting position and the impact strength; wherein the light-emitting mode comprises the distribution position, the light-emitting time sequence and the light-emitting color of light-emitting elements participating in light emitting in the light-emitting array. Through an adjustable vibration threshold value and signal analysis, effective hit and environment interference can be effectively distinguished, response is accurate, and the display effect is visual.

The application discloses a tank boiling fire early warning technology based on an ultralength laser vibration detector, which comprises an ultralength laser vibration detector and a tank; the ultralength laser vibration detector is placed away from the tank; the ultralength laser vibration detector is connected with a data acquisition module; the data acquisition module is connected with a PC display end; and the PC display end is connected with an alarm device. The tank boiling fire early warning technology based on the ultralength laser vibration detector is adopted, the pressure pulse caused by bubble breaking is started, the characteristic that a large number of bubbles are generated when the tank boiling fire occurs is utilized, the tank wall vibration signal caused by the breaking of the large number of bubbles is detected by the ultralength laser vibration detector, the vibration information is received by the data acquisition module and transmitted to the PC display end, the information exceeding the vibration threshold of the PC display end triggers the alarm information, the alarm device is used to give an alarm before the boiling, and relevant personnel are reminded to respond and evacuate in time.

This invention relates to an adaptive fault early warning method for offshore wind turbines, belonging to the field of offshore wind turbine fault monitoring and early warning technology. Addressing the technical problem that traditional fixed-threshold early warning methods struggle to adapt to dynamic changes in wind speed and wave height in the marine environment, leading to high false alarm and false alarm rates, this invention utilizes vibration sensors installed in the nacelle and tower, temperature sensors in the generator bearing housing, an ultrasonic anemometer on the top of the wind turbine, and a wave radar on the foundation structure to collect real-time effective values ​​of vibration velocity, bearing temperature, ten-minute average wind speed, and significant wave height. The average wind speed and significant wave height are input into an adaptive threshold calculation module with built-in vibration and temperature threshold response functions to obtain corresponding adaptive early warning thresholds. The real-time collected effective values ​​of vibration velocity and bearing temperature are then compared with the corresponding thresholds, enabling accurate and timely early warning of offshore wind turbine faults and ensuring the safe and reliable operation of the turbine.

This utility model relates to the field of safety protection light curtain technology, and specifically discloses a safety protection light curtain for automated equipment. The light curtain includes a monitoring component comprising a substrate, an accelerometer, and a buzzer. The outer surface of the protective cover has several through holes for real-time acquisition of triaxial vibration acceleration data. The system has a preset vibration threshold. When the number of times the vibration acceleration in any axis exceeds the threshold reaches a set value, it is immediately determined that the safety light curtain has a loose installation or displacement fault. At this time, the accelerometer immediately outputs a high-level signal to the buzzer, triggering the buzzer to emit a continuous alarm, reminding on-site personnel to check for potential hazards and avoid a decrease in detection accuracy due to accumulated offset. This effectively avoids the risk of safety protection failure due to safety light curtain offset, providing more reliable safety protection for operators and equipment operation, and significantly reducing the probability of mechanical injury accidents.

The invention discloses a motor control system based on abnormal operation trend prediction, and relates to the technical field of motor control, a reference construction module is used for obtaining model parameters of a motor bearing and normal vibration signals in a full life cycle, establishing a vibration reference model dynamically updated along with operation time in combination with bearing structural characteristics, and constructing a vibration reference model; the reference model comprises normal vibration thresholds in different operation stages; the data acquisition module is used for synchronously acquiring real-time vibration data and real-time temperature data of the motor bearing, the temperature data is used for reflecting the lubrication state of the bearing, comprehensive vibration information is captured through a multi-direction sensor, the signal identification degree is improved in combination with time domain and frequency domain feature analysis, and the accuracy of the vibration information is improved. Therefore, the recognition sensitivity of the whole system to early wear is improved.

The present invention discloses a method for automatically starting up or shutting down a vehicle-mounted humidifier, including the following steps: obtaining, at intervals, a vibration signal received by a humidifier, determining whether the vibration signal exceeds a preset vibration threshold, and if yes, generating a first control command, where the first control command is used to trigger an atomization module in the humidifier to start operating; and obtaining, at intervals, ambient humidity around the humidifier, determining whether the ambient humidity exceeds a preset humidity threshold, and if yes, generating a second control command, where the second control command is used to trigger the atomization module in the humidifier to stop operating. Benefits of the present invention are as follows: The vibration threshold is calibrated based on vibration frequency generated when a user sits in a driver's seat, which effectively reduces false startup of the atomization module.

The invention provides a thermal power equipment health degree assessment method and device based on vibration and electronic equipment. The method comprises the following steps: receiving operation data of a process parameter measuring point of monitored target thermal power equipment and identification information of the target thermal power equipment; determining target threshold data based on the identification information of the target thermal power equipment, wherein a plurality of continuous vibration severity level intervals and vibration threshold boundaries corresponding to the continuous vibration severity level intervals are defined in the threshold data; and determining the vibration severity level of the target thermal power equipment based on the operation data of the target thermal power equipment and the target threshold data so as to match an operation and maintenance strategy based on the vibration severity level of the target thermal power equipment. By optimizing and tightening the vibration severity level threshold value, equipment abnormity can be found earlier, and the early warning capability is improved.