292results about How to "Play an early warning role" patented technology

The invention discloses an intelligent limit intrusion monitoring system and a monitoring center database. The intelligent limit intrusion monitoring system comprises a data acquisition system, a monitoring center, an integrated management platform and an intelligent alarming device. The data acquisition system is used for acquiring state monitoring data in a monitoring region. The monitoring center is in communication connection with the data acquisition system and is used for analyzing the state of a monitoring objective in the monitoring region and determining an alarming objective and the danger level of the alarming objective in real time according to the state monitoring data and triggering corresponding guard signals according to the danger level. The integrated management platform is connected with the data acquisition system and the monitoring center and used for monitoring and managing on-site monitoring equipment of the monitoring region in a centralized manner. The intelligent alarming device is in communication connection with the monitoring center to achieve linkage and is used for giving out an early warning or an alarm according to the guard signals. Thus, by means of the intelligent limit intrusion monitoring system and the monitoring center database, natural disasters, unexpected accidents, unlawful entry and other foreign body limit intrusion events endangering safety operation of a railway can be accurately monitored, pre-warned and alarmed in time.

The invention discloses a wind generation set yaw system on-line monitoring mechanism comprising a data acquisition card and a sensor set connected with the data acquisition card. The sensor set comprises a rotation speed sensor, an electric current sensor and a vibration sensor. The rotation speed sensor, the electric current sensor and the vibration sensor are used for monitoring wind generationset yaw bearing rotation speed, a yaw motor current value and a yaw caliper vibration signal value in real time. The data acquisition card is used for acquiring real-time monitoring data of the rotation speed sensor, the electric current sensor and the vibration sensor. The invention further discloses a wind generation set yaw system intelligent fault diagnosis and life evaluation system comprising the on-line monitoring mechanism, and a wind generation set yaw system intelligent fault diagnosis and life evaluation method. Real-time monitoring of the yaw motor current, a yaw caliper vibrationsignal and yaw bearing rotation speed by the on-line monitoring mechanism is combined with existing on-line monitoring parameters, a fault diagnosis and evaluation system of data acquisition and extraction and a background data algorithm is formed, and powerful criteria are provided for fault risk and life evaluation by operators.

The invention discloses a vehicle obstacle monitoring method based on vibration of a steering wheel and a device. The vehicle obstacle monitoring method comprises the following steps of: 1) arranging the minimum obstacle distance for sending out prompt; 2) detecting the obstacle distance closest to a vehicle body through a distance-measuring radar when a vehicle runs; and 3) when the obstacle distance is less than the minimum obstacle distance, applying vibration on the steering wheel of the vehicle to send out an obstacle proximity prompt to a driver. The monitoring device comprises a control unit, a radar distance-measuring unit and a vibration unit, wherein the radar distance-measuring unit is used for detecting the obstacle distance closest to the vehicle body; the vibration unit is used for sending out a vibration prompt according to the obstacle distance; the control unit is connected with the radar distance-measuring unit; the vibration unit comprises at least one vibrator fixed on the steering wheel of the vehicle; and the vibrator is connected with the control unit. The invention has the advantages that the implementation cost is low, the safety effect of driving is improved, the reminding is intuitive and effective, and the application range is wide.

The invention discloses a system and a method for monitoring and warning disasters of power grids on the basis of a GIS (geographic information system). The system comprises a data acquisition unit, a control unit, an information transmission unit and a centralized control center. The data acquisition unit comprises a satellite monitoring module and a monitoring module with a monitor, the centralized control center comprises an industrial control computer and a display, a warning module, a database module and a GIS module are arranged in the industrial control computer, the industrial control computer is used for displaying monitored information and carrying out warning for environmental change, and the database module is connected with the GIS module. The system and the method have the advantages that running conditions and environments of the power grids can be monitored by the aid of the fixed-point monitor for circuits of the power grids and photos shot by satellites, the monitored information is imported into the GIS, and accordingly the power grids can be visually monitored in real time; historical natural disaster accident information and pre-accident environmental information change can be imported into the system, accordingly, monitored data can be predicted, staffs can prepare for the disasters of the power grids in advance, and loss due to the disasters can be reduced.

The invention relates to a system for detecting a lane line based on a laser radar and a realization method thereof. The system comprises a control module which is formed by an image processing module and a central processing module. The input end of the image processing module is connected to the output end of a vehicle-borne laser radar. The data output end of the image processing module is connected to the data input end of the central processing module. The output end of the image processing module is connected to the input end of a display module. The input end of the central processing module is connected to the output end of a speed measurement sensing module. The output end of the control module is connected to the input end of an early warning module. According to the system and the method, through the cooperative use of the vehicle-borne laser radar, the image processing module and the central processing module, the condition of a road surface can be detected in different light conditions, the condition of a road surface ahead can be predicted, and the system can play a warning role earlier than a general system.

The invention discloses a sow breath system disease early warning method based on an acoustic analysis. The method includes following steps: S1, setting an audio acquisition node for acquiring a soundsignal; S2, establishing a classification for determining whether the sound signal is a cough audio; S3, extracting cough information to determine whether the sow is ill; S4, obtaining a sound sourceposition; S5, transmitting illness information by a GSM module; S6, receiving the information by an administrator; and S7, determining whether monitoring is continued: if yes, returning to step S2, and otherwise, ending the process. According to the method, the sound signals in a pig house can be directly acquired, the cough sound of the sow is recognized in real time, information carried by thecough audio is extracted and recognized, whether the sow has a breath system disease is determined, the automation level of a cultivation environment of the pig house can be improved, man-made subjective determination is reduced, and the recognition accuracy of the breath system disease is improved.

The invention provides a high-durability fiber grating scouring sensor which comprises a metal shell and a measuring part arranged in the metal shell and connected with the metal shell, wherein the measuring part is composed of a FRP uniform strength beam and two fiber gratings stuck on the upper and lower surfaces of the FRP uniform strength beam, the leading-out wire of the fiber grating passes through the metal shell and is educed, the inner wall of the metal shell is provided with a metal baffle plate provided with a calcium carbide, the lower part of the metal shell is provided with a dowel bar, a prepressing small-rigidity spring is arranged between one end of the dowel bar and the inner wall of the metal shell, and the other end of the dowel bar is provided with a FRP disc. The scouring sensor has the advantages of the high precision, the convenient arrangement and the adjustable range and resolution, and is applied to the foundation soil scouring monitoring of health monitoring of civil engineering structure and the foundation soil scouring monitoring of structural test.

The invention discloses cashier equipment and a cashier scheme with retail cashier antitheft and loss prevention functions. An antitheft system comprises a cashier register and a camera. A storage server and a shooting and checking system are arranged in a host of the cashier register, commodity barcode information and commodity picture information which are bound with each other are recorded in the storage server, commodities can be photographed and subjected to picture recording when commodity barcodes are scanned by cashers, and the corresponding commodity barcodes can be found by the aid of shot commodity pictures and can be checked against the barcodes scanned by the cashiers, so that whether the scanned commodities conform to commodity information obtained by the camera by means of shooting and picture recording or not can be determined, the cashiers stop cashier work if the scanned commodities do not conform to the commodity information, and errors can be prompted; similarly, cashier can be stopped if commodity scanning actions (false commodity scanning) of the cashiers are shot or subjected to picture recording but the commodities are not scanned into systems, errors can be prompted, normal cashier work only can be resumed when the scanned barcodes conform to the shot commodity information, and accordingly the purpose of preventing the cashiers from collaborating with outsiders to steal properties can be achieved.

The invention discloses a drunk driving limiting device which comprises a central control processing unit, a drunk driving information informing unit, an automobile starting control unit, a drunk driving information alarm unit and at least one drunk driving information sensing unit. The central control processing unit is in communicating connection with the drunk driving information sensing units, the drunk driving information informing unit, the automobile starting control unit and the drunk driving information alarm unit and is used for receiving identity information, used for sensing drivers, from the drunk driving information sensing units and judging whether alcohol concentration data exceeds the standard or not and whether the automobile starting control unit is operated to send a cutting-off signal, and the drunk driving information informing unit informs preset contacts of the sensed identity information of the drivers and the alcohol concentration data. The limiting device can effectively judge whether drivers are in a drunk driving state or not, determines to cut off an automobile engine ignition system or not according to the states of the drivers and accordingly can nip in the bud and thoroughly limit drunk driving.

The invention provides a method and device for detecting the anomaly of a domain name system, belonging to the technical field of computer network. The method comprises the following steps: dividing the inquiry data stream of the domain name system into a plurality of data blocks; calculating the entropy values of the data blocks according to the preset inquiry attribute to obtain the corresponding entropy values; judging whether preset quantity of entropy values in the obtained entropy values are more than a preset threshold; and if so, determining that the domain name system is abnormal. The device of the invention comprises a dividing module, a calculating module and a judging module. The device of the invention calculates the entropy values of a plurality of data blocks in the inquirydata stream of the domain name system and determines that the domain name system is abnormal when preset quantity of entropy values in the obtained entropy values are more than the preset threshold; the device of the invention can perform early warning to the anomaly of the domain name system, thus reducing loss after the anomaly of domain name system appears; and compared with the prior art, themethod of the invention has high detection accuracy degree and low omission ratio.

The invention discloses a power network GIS based meteorology single-station radar early warning method and system. The method comprises the following steps: according to coordinates of power network equipment, determining a power network equipment layer; monitoring power network equipment disposed at specific latitudes and longitudes in real time, obtaining meteorology data in single-station radar information of a power network equipment coverage area; positioning meteorology data information to the power network GIS layer through latitude and longitude information of radar monitoring sites to establish a radar information layer; and establishing a single-station radar early-warning analysis model: performing data association processing on the power network equipment layer and the radar information layer in an early-warning area to determine meteorology early warning data of the power network equipment coverage area and displaying the meteorology early warning data on a power network GIS map. The method and system provided by the invention have the following advantages: a professional meteorological radar calamity early warning model is established, fine early warning of electric power facilities is realized, the destructiveness of calamities is reduced effectively, formation of relevant disaster prevention measures and standards is facilitated, and the loss of a power network is reduced.

The invention discloses a sound wave detecting method of carbon amount in a catalyst in a reaction which analyzes received sound emission signal characteristic parameters and combines a small wave analysis or small wave packet analysis method to confirm whether the catalyst is coked and the carbon amount of the coked catalyst so as to realize the real time on-line monitoring on the catalyst coking and burning processes by receiving the sound emission signal inside a fluidized bed reactor and a regeneration reactor. The invention has the advantages of sensitivity, safety, environment protection, facility and shortcut, etc., can accurately on-line analyze the carbon amount of the catalyst and the change of the carbon amount of an FCC, MTO, GTO fluidized bed section and a regenerator section which is used for guiding production.

The invention discloses a refreshing and sterilizing control device and the control method thereof for realizing safety temperature adjustment and timing in a varying temperature compartment. The control device is used in the varying temperature compartment and comprises a gate controlled switch, a manual switch, a main control panel, an ultraviolet lamp, an LED refreshing lamp and a red warning lamp, wherein the gate controlled switch is used for starting the sterilizing and refreshing control device automatically when a door of the varying temperature compartment is closed and closing the sterilizing and refreshing control device compulsively when the door of the varying temperature compartment is opened; the manual switch is used for closing the sterilizing and refreshing control device compulsively and manually when the sterilizing and refreshing control device is in on-state for a long time, which is caused by that the gate controlled switch cannot work under the state that the door of the varying temperature compartment is opened; and the red warning lamp is started and closed synchronously with the ultraviolet lamp when the door of the varying temperature compartment is in open state. According to the control method provided by the invention, the interval time and the opening time for opening the sterilizing ultraviolet LED lamp are determined by the temperature set in the varying temperature compartment, and the opening of the refreshing LED lamp is determined comprehensively by the set temperature and the actual temperature in the varying temperature compartment.

The invention relates to the distributed optical fiber sensing technique, in particular to a distributed optical fiber multi-parameter sensing measurement system. The distributed optical fiber multi-parameter sensing measurement system solves the problem that according to an existing distributed optical fiber sensor, vibration information of sensing optical fibers can not be monitored. The distributed optical fiber multi-parameter sensing measurement system comprises a super-narrow-linewidth high-power optical fiber laser, a first 1*2 optical coupler, a single-side-band carrier suppression modulator, a second 1*2 optical coupler, a third 1*2 optical coupler, an electrooptical modulator, a first 2*1 optical coupler, a scrambler, an integrated wavelength division multiplexer, sensing optical fibers, a full-optical-fiber narrow-band low-noise Brillouin frequency shift, a narrow-band fiber bragg grating transmission filter, a second 2*1 optical coupler, a third 2*1 optical coupler, a first low-bandwidth high-gain photoelectric detector, a second low-bandwidth high-gain photoelectric detector and a data acquisition processing system. The distributed optical fiber multi-parameter sensing measurement system is suitable for various measurement fields.

The invention provides an automobile remote control anti-theft system which comprises a mobile phone, a control processor, an automobile door opening monitoring device, an automobile vibration monitoring device, a wireless help seeking starting device, a camera shooting device, an engine controller, a judgment analyzing unit, an information transmitter, an information receiver and a global position system (GPS) unit. The automobile remote control anti-theft system has functions of theft prevention, loss prevention and robbing prevention.

The invention relates to a dynamic slight press fan-shaped section hydraulic system leakage fault on-line judging and early warning method, which belongs to the technical field of continuous casting equipment maintenance in the metallurgical industry. The method has the technical scheme that (1) a roll gap control system PLCS7-300 sends a 'fan-shaped section hydraulic system locking' order to a remote station PLCS7-300; (2) the pressure value of the fan-shaped section hydraulic system is fed back; (3) the value of a fan-shaped section displacement sensor is fed back; (4) the roll gap control system PLCS7-400 judges the feedback pressure value of the hydraulic system and the value of the fan-shaped section displacement sensor combinedly; and further the results are output to a continuous casting master control system. With the method disclosed by the invention, roll gap control loss caused by the leakage fault of the hydraulic system can be prevented, the actual roll gap is controlledto meet the scope designed by the technology, the contraction taper of the roller gap is ensured to guarantee casting blank quality, an early warning function is played to protect fan-shaped section equipment, key equipment is monitored comprehensively and managed automatically in the whole continuous casting production process, the continuous casting production is stabilized, the technical control level is improved, the product quality is improved, and economic benefits are created.

The invention discloses a high-multiplying-power flexibly-packaged lithium ion secondary battery. The high-multiplying-power flexibly-packaged lithium ion secondary battery comprises an outer packaging film, wherein a positive plate, an isolation film, a negative plate and electrolyte are arranged in the outer packaging film, the positive plate comprises an aluminum foil, the surface of the aluminum foil is provided with a positive material layer consisting of positive active substances, a conductive agent and a binder, the positive active substances consist of lithium cobalt oxide and lithium iron phosphate in different working voltages, the aluminum foil is provided with a plurality of positive through holes, the positive substance layer is provided with a plurality of positive pores corresponding to the through holes, and the electrolyte can pass through the positive through holes and the positive pores; the negative plate comprises a copper foil, wherein the surface of the copper foil is provided with a negative substance layer consisting of a negative active substance, a conductive agent and a binder, the negative active substance is a carbon material, the copper foil is provided with a negative through holes, the negative substance layer is provided with a plurality of negative pores corresponding to the through holes, and the electrolyte can pass through the negative through holes and the negative pores.

The invention discloses an elevator alarm system. The elevator alarm system comprises an intelligent router, a message sending module and an intelligent monitoring unit. The intelligent monitoring unit comprises a data acquisition module, a data comparison module, a controller, a feedback module, a microprocessor, a buzzer alarm and a storer. The output end of the controller is connected with the first input end of the data comparison module. The second input end of the data comparison module is connected with the output end of the data acquisition module. The output end of the data comparison module is connected with the input end of the microprocessor through the feedback module. According to the intelligent early warning control system used for an elevator, when an operation failure of the elevator occurs, an alarm signal or an alarm text can be automatically sent to a remote maintenance center, a remote monitoring center and a remote mobile terminal, early warning work can be timely conducted, and meanwhile, the intelligent monitoring effect of an existing widely popular smart mobile phone can be achieved, so that maintenance work of the elevator is conveniently and timely conducted.

The invention provides a safety protection system for a lithium battery test chamber. The safety protection system comprises a fire monitoring module, a fire extinguishment module, a control system and an upper computer. The fire monitoring module is used for acquiring monitoring data of the lithium battery test chamber and transmitting the monitoring data to the control system. The control systemis used for transmitting the monitoring data to the upper computer and generating a start signal for controlling the fire extinguishment module to carry out the fire extinguishment task when the monitoring data are abnormal. The fire extinguishment module is used for carrying out the fire extinguishment task according to the start signal. The upper computer is used for receiving and displaying the monitoring data transmitted by the control system and providing a user interaction interface so that the control system can carry out corresponding operation according to a control signal input by auser. By means of the safety protection system, the monitoring data inside the lithium battery test chamber can be judged intelligently; the early warning effect is achieved; when fire breaks out, the fire extinguishment module can be started automatically for controlling the fire; the whole process is high in automation degree; and the fire can be effectively prevented from getting worse.

A test paper used for semiquantitative-detecting oxLDL consists of plastic base plate, sample-loading region formed by micro-porous filtering film, blocking region formed by acetic acid cellulose film, labeling region formed by glass cellulose film, reaction region formed by nitric acid cellulose film and water absorption region. It is featured as setting control zone with antibody and detection zone with anti-mouse IgG on each above said region.

The invention provides a novel method and device for predicting and judging slope / landslide deformation and fracture modes. The method comprises the following steps of: arranging a plurality of geotechnical deformation wireless sensors in a slope / landslide superficial geotechnical body and arranging a plurality of deep displacement sensors in the slope / landslide superficial geotechnical body; andmonitoring superficial geotechnical body deformation through the geotechnical deformation wireless sensors and monitoring deep geotechnical body deformation through the deep displacement sensors, so as to comprehensively judge a deformation and fracture mode of the slope / landslide. According to the novel method and device for predicting and judging slope / landslide deformation modes, sensors are adopted to sense intuitional response of micro deformation of geotechnical bodies, so that the arrangement is simple and convenient and the judging results are correct and intuitional; and meanwhile, the judging process is free of manual site inspection and monitor, the deformation conditions and damage modes of slopes / landslides can be intuitionally reflected, so that real-time monitor and pre-warning are realized, and scientific basis is provided for taking correct engineering measures for the slopes / landslides.

The invention discloses a petal expansion type self-early-warning air filtering adsorption ball, and belongs to the field of waste gas adsorption. According to the petal expansion type self-early-warning air filtering adsorption ball, the expansion adsorption sheet is arranged, the adsorption ball is controlled to rotate in case of waste gas treatment, the flower pot can be unfolded outwards likeblooming petals, then the contact range and area of the adsorption ball and the waste gas are effectively increased and thus the use effect of the adsorption floating ball is obviously improved and the area of exhaust gas adsorption is increased; meanwhile, the oil solubility early warning ball is arranged, the adsorption ball adsorbs oil stains in waste gas, the wrapping and blocking layer is dissolved by the adsorbed greasy dirt along with gradual saturation of greasy dirt, the movable coil rope is unblocked at the moment, the movable coil rope is stretched under the action of gravity, and the whole balance weight falls at the moment so that the falling state of the balance weight can play a role in early warning for workers, the adsorption ball is convenient to replace in time, and thewhole waste gas treatment efficiency is effectively guaranteed.

The invention discloses an elevator brake with an emergency brake system and a working method for the elevator brake. The elevator brake comprises a brake spring, a coil winding, a guide post, an armature, an emergency brake assembly, a return assembly, a manual brake loosening rod, a pre-tightening force regulating rod, a combined supporting body, a tongue plate and a friction gate tile fixedly arranged on the tongue plate. When a car sliding phenomenon occurs, an emergency brake shoe tightly holds a brake wheel; when elevator maintenance is performed after emergency braking, if a distance between the tongue plate and the brake wheel reaches a threshold value when a capacitive type displacement sensor feeds back the occurred sliding phenomenon, a computer judges that the friction brake shoe needs to replace, otherwise, a barrel on the pre-tightening force regulating rod is manually rotated to increase pre-tightening force of the brake spring. The elevator brake can emergently brake, can determine maintenance time according to data acquired by a ring-shaped pressure sensor and the capacitive type displacement senor, and avoids the trouble that the brake screw needs to manually regulate frequently

The invention discloses a dissociated type model test device and method for simulating shield tunnel excavation grouting construction, and belongs to the technical field of underground engineering model test. The dissociated type model test device comprises a model box used for filling with a soil body, wherein circular holes are separately formed in two side walls of the model box; a solid cylinder, two ends of which are separately in lap joint on the circular holes, is arranged in the model box; an insertion side workbench is arranged at one side of the model box; a dissociated side workbench is arranged at the other side of the model box; a hollow tunnel circular tube which penetrates into a simulating box from the circular hole in one side of the model box is arranged on the insertion side workbench; a rubber ring sleeve, the inner side surface of which is bonded with the hollow tunnel circular tube, sleeves the hollow tunnel circular tube; a grouting tube is arranged in the hollow tunnel circular tube; one end of the grouting tube penetrates through the side wall of the hollow tunnel circular tube and is connected with the rubber ring sleeve; and the other end of the grouting tube is connected with a hydraulic control system. The dissociated type model test device can simulate disturbance, on surrounding soil body, of shield tunnel excavation, and also can simulate a shield tail grouting process during shield excavation construction.

The invention discloses an enzyme-linked immunoassay kit for chlamys ferreri blood cells and a preparation method thereof. The kit comprises an enzyme labeled plate, confining solution, washing solution, enzyme labeled antibody, pNPP substrate developing solution, phosphate buffer solution, blood cell anticoagulant, chlamys ferreri blood cell monoclonal antibody and a blood cell standard sample. The preparation method for the kit comprises the following steps of: preparing the chlamys ferreri blood cell standard sample, preparing the blood cell monoclonal antibody, optimizing an optimal using proportion of the antigen and the antibody, and establishing a detection result assessment criteria. Detection results can assess the possibility that the chlamys ferreri to be detected is subjected to pathogenic infection or environmental stress and the like by judging the established assessment criteria so as to provide basis for monitoring the health condition of the chlamys ferreri.

The invention discloses a computer management system and in particular discloses a tuberculosis monitoring and early-warning network information management system. The tuberculosis monitoring and early-warning network information management system is characterized by comprising a network registration or inquiry management system, a laboratory result registration management system and a data statistics or query analysis management system, wherein data is input into a computer through the network registration management system which is combined with the laboratory result registration management system, a data base is established and is managed through the computer, and operators inquire or state demanded information through the network inquiry management system and the statistics or query analysis management system. The advantages of the invention which are displayed in practical application can not be realized by current manual operations, the invention realizes safe and reliable data management, convenient and rapid data inquiry, analysis and statistics, and the operation of data input.

The invention provides a method for estimating horizontal dynamic displacement of a high-rise structure and a monitoring system thereof. The invention belongs to the technical field of structural horizontal displacement monitoring. The method comprises the following steps: under normal wind load in a good environment, synchronously measuring the horizontal dynamic displacement ud (x, t) and an inclination angle utheta (x, t) changing along with time t at the x point of the structure for multiple times within a period of time t, wherein first-order modal contribution plays a dominant role in the horizontal displacement of the structure under the action of wind load, and obtaining the horizontal dynamic displacement ud1 (x, t) and the inclination angle utheta 1 (x, t) under the first-order modal respectively, wherein ud1 (x, t) = beta * utheta 1 (x, t) is met; performing curve fitting on the horizontal dynamic displacement ud1 (x, t) and the inclination angle utheta1 (x, t) to obtain a linear coefficient beta; under other wind loads, especially extreme wind loads, only measuring the inclination angle u theta S (x, t), changing along with time t, of the x point of the structure actually; reserving a first-order modal contribution signal u theta S1 (x, t); obtaining the real-time horizontal dynamic displacement udS1 (x, t) changing along with time t at the x point of the structure,and approximately estimating the real horizontal dynamic displacement udS (x, t) of the structure, so real-time dynamic monitoring is achieved, calculation is convenient, precision is high, interference of environmental factors such as weather and noise is avoided, and the accuracy of the monitoring structure is improved.

The invention discloses an aero-engine continuous health state evaluation method based on SAE-HMM, and the method comprises the steps: collecting aero-engine monitoring parameters; preprocessing parameters; carrying out SAE model feature extraction; dividing health states; enabling the HMM model to describe a probability corresponding relation and a probability transition relation between the parameters and the health state; training a hidden Markov model according to the historical parameter data; monitoring parameter data in real time, performing health state evaluation through the established SAE-HMM model; calculating the current health degree of the engine according to the state probability values output by the SAE-HMM model, and carrying out the early warning of the health state transition of the engine. According to the method, while the original information amount is guaranteed, the method has the self-adaptive capacity of being high in model operation efficiency, low in complexity and capable of supporting uncertain dimension parameters and characteristics, the engine continuous degradation rule contained in the multi-dimensional data is effectively mined and represented,the engine health state evaluation precision is improved, and more accurate state transition early warning is achieved.

The invention discloses an oil cylinder, which includes a piston shaft, a front flange, a cylinder body, a locating sleeve, and a rear flange, wherein the front flange, the cylinder body, the locating sleeve, and the rear flange are sequentially arranged on the piston shaft in a penetrating way, and are matched and connected with each other; and a piston, which can perform reciprocating movement, is arranged in the cylinder body, and an oil inlet port and an oil outlet port are arranged on the cylinder body. By adopting the oil cylinder provided by the invention, a product and discharging oil are completely separated, the oil leakage cannot happen, the service life of the oil cylinder is prolonged, a series of problems caused by the oil leakage are solved, the finished product ratio is improved, the quality of the product is ensured, and the waste of material and the maintenance cost of the equipment are reduced; because an oil discharging channel is arranged, when a sealing part is under limiting wear, oil tightness of a shaft end can be guaranteed; the excess oil discharges from the oil discharging channel designed, so as to play a role of early warning; the oil cylinder has the advantages of simple structure, convenience in assembly, and firm combination among each component, and can ensure the machine to operate normally for a long term with small failure rate; and the oil cylinder has small and aesthetic appearance, and wide application range, and can replace the ordinary oil cylinder to use in various industries in the mechanical field.