134 results about "Life detection" patented technology

The invention belongs to the technical field of battery detection, and particularly discloses a fuel cell performance evaluation method, system and device and a medium, and the method comprises the steps: collecting the multi-source feature data of a to-be-detected fuel cell in real time; carrying out preprocessing on the multi-source feature data; inputting the preprocessed multi-source characteristic data into an electrochemical-thermodynamic coupling model, and calculating to obtain an activation polarization voltage, an ohmic loss voltage and a concentration polarization voltage; and inputting the multi-modal input features into a pre-trained fuel cell performance health state evaluation model to evaluate the health state index and the remaining service life of the fuel cell to be tested. The accuracy of fuel cell health state and service life detection can be improved.

The invention relates to the technical field of electrical equipment state monitoring, in particular to an intelligent circuit breaker electrical life detection method and system based on data analysis. The method comprises the following steps: synchronously acquiring opening coil voltage and current sequences, a main loop current sequence and environment temperature data when a circuit breaker acts, extracting actually measured action time based on the coil data, and calculating a mechanical health degree factor by combining the environment temperature and the actually measured action time; after decoupling correction is carried out on an electrodynamic force interference factor derived by a peak current of a main loop, a mechanism wear state index is obtained; a nonlinear damage model containing basic electric heat loss and mechanical degradation acceleration factors is constructed, a single-time electric life loss value is calculated, historical loss values are accumulated, a dynamic threshold value is combined to realize full-life-cycle prediction, and evaluation interference of environmental factors and large-current electrodynamic force is eliminated through deep data analysis. The nonlinear acceleration effect of mechanism hysteresis on contact ablation is quantified, and the detection precision is remarkably improved.

The invention provides a lithium battery residual life detection method and apparatus, an electronic device and a storage medium. The method comprises the steps of performing correlation analysis on a voltage battery capacity curve of each charging interval and a battery health state to obtain a correlation coefficient; when the absolute value of the correlation coefficient is greater than a preset value, constructing a battery voltage characteristic sample set through the battery voltage and the battery capacity of the charging interval, and taking impedance spectrum data corresponding to each charging interval in the battery voltage capacity characteristic sample set as an impedance spectrum characteristic sample set; inputting the battery voltage characteristic sample set into a deep learning model to obtain a predicted impedance spectrum, and training the deep learning model based on the predicted impedance spectrum and the impedance spectrum characteristic sample set; and inputting the charging data of a to-be-predicted lithium battery into the trained deep learning model to obtain a target predicted impedance spectrum, and determining the predicted residual life of the lithium battery based on the equivalent circuit model and the target predicted impedance spectrum. The detection efficiency is improved by detecting the battery voltage characteristics of the lithium battery.

The invention provides a fragrance system service life detection method based on working condition parameters. The fragrance system service life detection method comprises the steps of obtaining fan rotating speed parameters, environment temperature parameters and working time delta t under the working condition when a fragrance system actually works; based on the fan rotating speed parameter and the environment temperature parameter, determining a corresponding preset fragrance rotating speed consumption coefficient Kr and a preset fragrance environment temperature consumption coefficient Kt; according to the working time delta t, the fragrance rotating speed consumption coefficient Kr and the fragrance environment temperature consumption coefficient Kt, the equivalent life consumption sub-time delta Tequiv relative to the fragrance system under the reference working condition is calculated; accumulating the sum of the equivalent life consumption sub-time delta Tequiv of the fragrance system under a plurality of working conditions, and generating the total equivalent life consumption time Ttotalquiv of the fragrance system; and when the total equivalent life consumption time Ttotalquiv of the fragrance system exceeds a preset life threshold value Tthreshold of the fragrance system, judging that the life of the fragrance is ended. According to the method, the fan rotating speed and the environment temperature which influence the fragrance consumption rate are calculated, so that the service life detection is more accurate.

The invention relates to the technical field of robots, and provides a walking control method, device and equipment for a foot type robot and a medium. Multi-source ground sensing information of the advancing direction of the foot type robot is obtained; determining the current ground type of the advancing direction according to the multi-source ground sensing information; generating a target gait parameter matched with the current ground type through a gait parameter mapping model corresponding to the current ground type; the target gait parameters are converted into joint control instructions, and joints of the foot type robot are driven to move according to the joint control instructions. The walking control scheme of the foot-type robot is suitable for complex terrains such as mountainous regions, ruins, gullies and muddy zones, the adaptive capacity and walking stability of the foot-type robot in the different complex terrains can be improved, and the foot-type robot can be better applied to on-site investigation and loss assessment of insurance claim settlement in the field of financial science and technology; and life detection, rescue and other tasks in the field of medical science and technology.

The invention discloses a machine tool cutter service life detection system, which belongs to the technical field of machine tool machining cutter detection, and comprises a magnetic sensor for generating a pulse signal when a tool rest completes a workpiece machining cycle; the signal processing module receives the pulse signal and executes a counting algorithm; the tool wear detection module comprises an optical sensor group for acquiring cutting surface images, a vibration sensor for acquiring vibration signals of a tool rest main shaft, a current sensor for acquiring current fluctuation of a tool feeding motor and an acoustic emission sensor for acquiring acoustic emission energy of a cutting frequency band; the analysis early warning module is used for training a dynamic threshold model based on the feature vector and outputting a wear level; the cutter life prediction module predicts the remaining service life of the cutter; and the execution module outputs a machine tool machining signal according to the tool wear grade and the remaining service life of the tool. According to the invention, various different types of sensors are integrated at the same time for comprehensive wear detection; the problems of single monitoring dimension and low precision in the prior art are solved.

The application discloses a kind of solid waste fiber concrete fatigue life prediction method, belong to the technical field of concrete life detection;Including the following steps: step one: using solid waste to make concrete sample m parts, and the alkali activation is carried out to the concrete sample, the physical characteristics of concrete sample are measured;Step two: establish test environment, place concrete sample in test environment, according to cycle time, the property of concrete sample is measured, including n kinds of indexes, form data group;Step three: using data group as calculation data, data standardization is carried out, the calculation of information amount is carried out, and the constructed concrete life prediction model is input;Step four: by means of concrete life prediction model, the service life of concrete is obtained.The application adopts the above method, establishes concrete life prediction model, and the strength of concrete is predicted by the index change under simulated environment, and finally realizes the life prediction of concrete.

The utility model provides a kind of light-emitting anklet main body flexural life detection machine, including workbench, mobile setting platform is set on workbench, and positioning slot is opened on platform, and first quick clamp is set on platform, and one side of platform is provided with clamping mechanism, and clamping mechanism includes lifting cylinder, and lifting cylinder's piston rod is provided with clamping cylinder, and the piston rod of clamping cylinder is provided with clamping block, and first arc slot is opened in clamping block.When testing, the locking sleeve and connecting rod of light-emitting anklet are placed in positioning slot, first quick clamp is pressed tightly locking sleeve, clamping block clamps one side of anklet, and moving platform moves away from the side of clamping mechanism, locking sleeve opens, lifting cylinder drives clamping block to open anklet upwards, and moving platform is further opened anklet in the direction perpendicular to connecting rod, when closing, moving platform is first close to lifting cylinder, then control lifting cylinder to close one side of anklet, finally moving platform drives locking sleeve to close, so repeated operation realizes to light-emitting anklet simulation flexural operation.

The invention relates to the technical field of resistor life detection, in particular to a real-time life detection method and system for a piezoresistor. The method comprises the following steps: dividing a current impact experiment of the piezoresistor into a plurality of time windows, obtaining a plurality of related parameters representing that the resistance performance tends to be degraded in each time window, and screening out direct detection parameters measured by an instrument in a resistance degradation process; according to the relevance between the direct detection parameter and the indirect detection parameter of the multiple related parameters, obtaining the relevance significance and reference factors of the two types of detection parameters; weighting processing is carried out on the direct detection parameters to obtain variation characteristic quantities of the piezoresistor tending to deteriorate in different time windows, a prediction model is constructed through the variation characteristic quantities constructed in a self-adaptive weighting mode, and residual life detection is carried out on the target piezoresistor which is in a running state at present by utilizing the prediction model, so that the residual life of the target piezoresistor is detected. According to the scheme, the accuracy of predicting the real-time residual life of the piezoresistor in the using process is improved.

A sensor coupled to a computer can sense a pressure of a buffer tank. A computer can determine a start of dispensing a beverage from a beverage dispenser. The computer can determine that an elapsed time from the start of dispensing the beverage reaches a predefined duration threshold. The computer can measure a particular pressure of the buffer tank when determining that the elapsed time reaches the predefined duration threshold. The computer can determine that the particular pressure falls below a predefined pressure threshold. The computer can generate an order to replace a water filter of the beverage dispense in response to the particular pressure at the elapsed time falling below the predefined pressure threshold.

The utility model relates to a gas spring service life detection device which comprises a transverse guide rail, a fixing block is fixed on the upper surface of the transverse guide rail, a first hook is fixed on the fixing block, and the transverse guide rail is provided with a transverse guide rail groove. A first sliding block and a first linear driving assembly used for driving the first sliding block to linearly move in the horizontal direction are arranged in the transverse guide rail groove, the first sliding block is in sliding fit with the transverse guide rail groove, a longitudinal guide rail is fixed to the first sliding block, and a longitudinal guide rail groove is formed in the longitudinal guide rail; the longitudinal guide rail is provided with a second sliding block in sliding fit with the longitudinal guide rail groove and a second linear driving assembly used for driving the second sliding block to linearly move up and down, and the second sliding block is fixedly provided with a second hook. The application range is wide.

This invention discloses a 3D-based oil pipeline life prediction system, relating to the field of pipeline life detection technology. It includes: a contour reconstruction module S11, used to acquire three-dimensional point cloud image data of the oil pipeline shell surface under actual operating conditions, and perform surface contour reconstruction processing based on the three-dimensional point cloud image data to extract spatial geometric structure data containing local deformation defect areas; a force-thermal coupling analysis module S12, used to construct a finite element analysis mesh based on the spatial geometric structure data, and load operating condition data into the corresponding mesh nodes to generate a force-thermal coupling stress field, wherein the operating condition data includes periodic internal working pressure values, temperature field data along the pipeline, and axial disturbance stress tensor; and a feature extraction module S13, used to calculate the equivalent stress distribution values ​​of the defect area nodes based on the force-thermal coupling stress field. This invention achieves accurate quantification of fatigue damage evolution in defect areas.

The invention relates to a multi-mode intelligent security check system, which comprises an application auditing system, a security check channel system and a monitoring system, wherein the security check channel system is provided with an alarm mechanism; the monitoring system is used for monitoring the application auditing system and the security check channel system; the security check channel system comprises a vehicle security check channel and a personnel security check channel which are provided with A and B doors and transmit information to the monitoring system, the vehicle security check channel is provided with a life detection system, a vehicle bottom scanning system and a vehicle driver checking system, and the personnel security check channel is provided with an article detection and storage system and a multi-stage second non-inductive face recognition system; the monitoring system comprises a police officer monitoring unit, an armed police monitoring unit and a remote monitoring unit which are all provided with monitoring terminals. The monitoring terminals monitor the application auditing system and the security check channel system and give out corresponding instructions when abnormity is found according to received information. According to the invention, safe and efficient security check can be realized, information synchronization of multiple departments is realized, and the working efficiency is improved.

The utility model discloses a bicycle belt life detector which comprises a base and a power mechanism, a first wheel carrier and a second wheel carrier are fixedly installed on the base, a first belt pulley is rotatably installed on the first wheel carrier, a second belt pulley is rotatably installed on the second wheel carrier, and a belt to be detected is installed between the first belt pulley and the second belt pulley in a transmission mode. A tensioning mechanism is installed between the first wheel carrier and the second wheel carrier and comprises a tensioning wheel which is installed in a rotating mode, the tensioning wheel makes contact with the belt face of a belt to be detected to achieve the tensioning effect, a flywheel is fixedly connected to the first belt wheel, and the power mechanism is installed on the base and is in transmission connection with the flywheel. A belt to be detected is installed through the belt pulley, speed change adjustment is achieved through the flywheel structure, and the bicycle belt life detection device can simulate different working conditions when the bicycle belt runs so as to meet the requirement for life detection of the bicycle belt.

The application discloses a kind of life detection methods of power battery, computer readable storage medium and vehicle.Therein, the method involves field, and the method includes: obtaining the target signal parameter of power battery and preset decision parameter, wherein, target signal parameter is the signal parameter of power battery in the process of using power battery by vehicle, and preset decision parameter is used to indicate the use habit of target object using power battery;Based on target signal parameter, determine the safety score value of power battery, energy score value, power score value, wherein, energy score value is used to indicate the value obtained by scoring the capacity of power battery, and power score value is used to indicate the value obtained by scoring the peak power of power battery;Based on preset decision parameter, safety score value, energy score value, power score value are processed, and the life detection result of power battery is obtained.The application solves the technical problem that the user acceptance of battery life detection result is relatively low.

The invention provides an equipment maintenance life detection method, and belongs to the technical field of artillery anti-recoil device detection, and the method comprises the steps: cleaning an anti-recoil device counter-recoil machine, connecting pressure, displacement and temperature detection assemblies, and building a detection reference coordinate system; the static air pressure and the dynamic air pressure attenuation rate are synchronously obtained, and at least three sets of data are collected every 5-30 s; the counter-recoil machine is controlled to complete multiple times of simulation of recoil / counter-recoil circulation, and the air pressure leakage rate, piston rod displacement and sealing face abrasion increment are detected; calculating a maintenance life residual value; when the threshold value is less than or equal to the preset threshold value, outputting maintenance early warning; according to the equipment maintenance life detection method provided by the invention, reliable detection of the equipment maintenance life residual value is realized by simulating recoil / counter-recoil cycle to restore the actual working state, synchronously capturing key parameters such as the air pressure leakage amount, the piston rod displacement amount and the sealing surface wear increment, and combining with the life calculation model.

The application relates to the technical field of life detection, and discloses a multi-target life detection method based on radar signals, which comprises the following steps: step one, collecting a multi-target mixed signal received by a radar and pre-processing the signal; step two, reconstructing a phase space of the pre-processed signal to obtain a high-dimensional phase space trajectory; step three, constructing an adaptive dictionary and performing sparse representation on the signal; and step four, separating the preliminary vital sign signals of each target from the mixed signal through a sparse optimization algorithm.The technical scheme of fusing the multi-frequency radar signal and deep learning is adopted, so that the technical effect of high-precision separation of multi-target vital sign signals in a complex electromagnetic environment is achieved.Compared with the technical scheme of relying on a single frequency band or fixed threshold classification in the prior art, the technical scheme solves the problems of serious signal aliasing and low separation precision in the dense obstacle or multi-target mixed scene.

This application relates to the field of artificial intelligence technology and discloses a method and apparatus for detecting the meaning of life. The method includes: constructing a knowledge graph based on multiple scientific documents; acquiring text data for training; using the knowledge graph as background knowledge for a large language model, and generating knowledge description text corresponding to the text data through the large language model; generating synthetic text based on the text data and the knowledge description text, and converting the synthetic text into a corresponding fusion vector; training a meaning-of-life detection model based on the fusion vector; and detecting the fusion vector generated based on social text using the trained meaning-of-life detection model. This method can improve the accuracy of meaning-of-life detection.

The utility model relates to the technical field of unmanned aerial vehicle application, and discloses an emergency rescue unmanned aerial vehicle life detection device which comprises an unmanned aerial vehicle body and two sets of bottom beams installed at the bottom of the unmanned aerial vehicle body. The supporting assembly is detachably installed between the two sets of bottom beams, and the two sets of adjustable connecting pieces are arranged on the supporting assembly in a sliding mode. Through cooperation of the bottom beam, the supporting assembly and the adjustable connecting piece, the relative position of the adjustable connecting piece on the supporting assembly is conveniently adjusted through the sliding block, then the connecting bolts slide in the adjusting grooves, the relative distance between the two sets of connecting bolts is conveniently adjusted, and then the positions of the connecting bolts can be conveniently and freely adjusted; therefore, the connecting bolt can be conveniently matched with a damping device on the life detection radar device, the mounting efficiency of the life detection radar device is improved, the mounting and debugging difficulty of the life detection radar device is reduced, and the practicability is improved.

This invention provides a method and system for life testing of a transmission mechanism in a vehicle reducer. The method includes: assembling the transmission mechanism under test with a braking mechanism; placing a load on a track, such that the load can be subjected to force by the braking mechanism in a braking state, wherein the load simulates a vehicle, and the load's velocity relative to the track along the track's extension direction is 0 when placed on the track; controlling the transmission mechanism under test to drive the braking mechanism to move, causing the braking mechanism to continuously switch between a braking state and a releasing state; collecting state data of the transmission mechanism under test when it drives the braking mechanism; and determining the lifespan of the transmission mechanism under test based on the state data. The method provided by this invention can relatively accurately simulate the actual working state of the transmission mechanism under test, obtain state data of the transmission mechanism under test, and, by analyzing the state data, can relatively accurately detect the lifespan of the transmission mechanism.

The utility model provides a contactor service life detection system, and belongs to the technical field of contactor detection. The contactor service life detection system comprises a first voltage detection module, a second voltage detection module, a counting control module, a voltage comparison module, a counting module and a main control module. The first voltage detection module is configured to detect whether the crane is connected with a working power supply, a control end of the counting control module is connected with the first voltage detection module, a first end of the counting control module is connected with a counting power supply, and a second end of the counting control module is connected with a power supply end of the counting module; the second voltage detection module is configured to detect the output voltage of the contactor, the first input end of the voltage comparison module is connected with the second voltage detection module, the second input end of the voltage comparison module is connected with the reference voltage module, the output end of the voltage comparison module is connected with the input end of the counting module, and the output end of the counting module is connected with the main control module. The safety of port operation can be improved.

The utility model discloses a device for detecting the fatigue life of a mechanical part, which belongs to the technical field of fatigue life detection equipment and comprises a base and a supporting seat and further comprises an inner shell fixedly mounted on the base, and the supporting seat is fixedly mounted on the inner shell; the motor is fixedly mounted in an inner cavity of the inner shell; the electric telescopic rod is vertically and fixedly installed in the inner shell, and the output end of the electric telescopic rod penetrates out of the supporting base. The clamping rod is located at the position close to the circle center of the supporting base before use, after the spring is installed, the clamping rod moves in the direction away from the circle center of the supporting base through work of the motor until the clamping rod makes contact with the spring, and therefore it is guaranteed that the spring is not bent when compressed. Different devices or supports used for installing the springs do not need to be replaced according to the springs of different models.

The utility model discloses service life detection equipment for a nitrogen spring, and relates to the technical field of nitrogen spring detection. The device comprises a box body, wherein one side of the top of the box body is fixedly connected with a shell; a detection assembly is arranged in the shell and comprises a limiting rod, a moving plate is slidably connected to the surface of the limiting rod, a pressing plate is fixedly connected to the bottom of the moving plate, and a placement plate is fixedly connected to the bottom of an inner cavity of the shell; a heating assembly is arranged on one side of an inner cavity of the shell and comprises an air suction box, and the air suction box is arranged on one side of the inner cavity of the shell. According to the utility model, the transmission motor works to drive the transmission rod to rotate so as to drive the circular plate to rotate, the circular plate drives the sliding rod to rotate, the sliding rod drives the movable plate to move, the movable plate drives the vertical plate to move, the vertical plate drives the pressing plate to move, the pressing plate carries out an extrusion test on the nitrogen spring, and the service life of the nitrogen spring under repeated extrusion can be detected.

This invention belongs to the field of electrical measurement technology, specifically relating to a method for detecting the lifespan of AC charging piles based on dynamic resistance analysis. The method includes: simultaneously acquiring the contact terminal voltage, charging current, and real-time contact temperature of the AC contactor and performing standardized preprocessing; using physical parameters from each sampling period to obtain an evaluation model including the thermistor coefficient of the contact material, to eliminate thermal interference and determine the contact resistance; combining the change in contact resistance, charging current, and characteristic coefficients to obtain a lifespan degradation index characterizing the energy stress accumulation; determining the output current scaling factor based on the deviation between the lifespan degradation index and the lifespan safety protection threshold, and adjusting the duty cycle of the power switch signal accordingly. This invention solves the technical problems of existing methods being unable to decouple thermal drift and wear loss, and lacking active protection, achieving accurate identification and closed-loop safety management of contactor lifespan degradation.

The application relates to the technical field of life detection, and discloses a multi-sensor fusion life detection system based on a handheld display control terminal, which comprises a sensor group used for collecting vital sign signals and environmental parameters, the sensor group comprising an infrared thermal imager, an audio vibration sensor, a radar wave detector and an environmental sensor; and a data processing module connected with the sensor group and used for carrying out noise filtering and feature extraction on the data collected by the sensor group. The application adopts a multi-sensor cooperative detection and data fusion technology, and achieves the technical effect of real-time and accurate detection of vital signs in a complex environment. Compared with the detection method of a single sensor in the prior art, the application can complement and fuse the data of multiple sensors at a disaster site, significantly improves the reliability and accuracy of detection, and solves the problem of a detection blind area of a traditional method under environmental noise and interference.

The application provides a kind of electrically conductive slip ring fatigue life detection device, including installation base plate, limiting guide rail and horizontal moving base, limiting guide rail is fixedly connected to the right side of the top of installation base plate, horizontal moving base is slidably arranged in limiting guide rail.The electrically conductive slip ring is placed between the current detector, four limiting plates can be self-adapting clamping and limiting for electrically conductive slip rings with different diameters due to the action of the first reset spring, the servo motor is started, the limiting plate reverses to drive the electrically conductive slip ring to reverse, the current detector transmits data to the processor for detection when the electrically conductive slip ring conducts electricity, so it can be suitable for electrically conductive slip rings with different diameters for detection, which is more convenient.

The application belongs to the technical field of sweeping robots, and provides a filter screen life detection circuit, a filter screen life detection device and a sweeping robot, wherein the micro dust detection circuit is arranged in the air duct, the micro dust concentration in the air duct is detected through the micro dust detection circuit, a micro dust detection signal is generated, and a filter screen replacement signal is generated by the main control circuit in the case that the voltage of the micro dust detection signal is greater than a first preset threshold, so that the user knows that the filter screen of the sweeping robot reaches the service life, the filter screen life is judged by judging the micro dust concentration in the air duct, the replacement of the filter screen is reduced, the cost is saved, and the user who forgets to replace the filter screen can be timely notified to replace a new filter screen.

The application provides a direct-current bus electrolytic capacitor life detection method and device, and relates to the technical field of electrolytic capacitor life detection. The direct-current bus electrolytic capacitor life detection device comprises a heat preservation box, a heating assembly for heating is arranged on the inner back wall of the heat preservation box, and a baffle assembly for blocking temperature is arranged on the inner top of the heat preservation box. The baffle assembly comprises a partition plate fixed to the inner wall of the heat preservation box, the inside of the partition plate is provided with a receiving cavity, the inside of the receiving cavity is fixedly connected with an extension rod, the other end of the extension rod is fixedly connected with an extension plate, and the extension rod is sleeved with a second spring. By arranging the shielding assembly on the inner top of the heat preservation box, when the box door is opened, the shielding plate automatically pops out and automatically shields the internal structure of the heat preservation box under the action of gravity, so that the staff will not feel uncomfortable when taking the electrolytic capacitor due to high temperature.

The invention belongs to the technical field of displacement sensor detection, and particularly discloses a service life detection device suitable for a pull rope displacement sensor and a use method of the service life detection device. The service life detection device is characterized in that a machine table is provided with a mounting seat used for temporarily fixing the detected pull rope displacement sensor; the screw rod sliding table is connected with the driving motor, and the screw rod sliding table is driven by the driving motor to do reciprocating rectilinear motion; the movement direction of the screw rod sliding table corresponds to the pull rope direction of the pull rope displacement sensor; the lead screw sliding table is provided with a sliding block used for being connected with a pull head of a tested pull rope displacement sensor. The counter and the motor speed regulator are respectively in communication connection with the limiting sensor; the two limiting sensors are arranged at the two ends of the stroke of the lead screw sliding table respectively. And the limiting sensor is used for detecting a position signal of the slide block moving to a stroke end point, transmitting the signal to the motor speed regulator to control the driving motor to reverse, and transmitting the signal to the counter to record a motion period, so that the authenticity and reliability of test data are ensured.

The embodiment of the present application provides a kind of life detection method and device, the method comprises: according to the fluctuation of radar signal and amplitude ratio determining the first position of candidate detection object;According to the radar signal and the first position, determine whether the candidate detection object is life body.According to the embodiment of the present application, the positioning of life body is carried out according to the ratio of radar signal fluctuation and amplitude, so as to improve the accuracy of life detection, avoid the misjudgment of strong reflector.