43results about How to "Monitor damage" patented technology

The invention discloses a non-reference Lamb wave damage monitoring method based on a unit doublet piezoelectricity sensor array and time window functions, comprising the steps: arranging the unit doublet piezoelectricity sensor array in the structure; loading Lamb wave narrow band signals onto a piezoelectricity unit; performing further normalization process on the collected structural response signals; separating and obtaining structural impair scattered signals; obtaining structural scatteringin signals; judging structural impair condition. The method realizes separation of the scatteringin signals with direct sense signals, border reflection signals under the drive of initiative Lamb wave; having no use for the structural response signals under healthy condition as the reference signals, monitoring the structure at any time; without changing or increasing the device and the parameter, realizing only through a general hardware system; realizing monitoring without processing or computing impair characteristic parameters at the arrival of the impair scattered signal in the signals.

The invention relates to a detecting method and a monitoring system for a coupling fault of a rotating machine. The detecting method comprises the steps of using vibrating signal data which are acquired by the rotating machine in a normal working condition and a fault working condition as a training data set, establishing a deep convolutional neural network model, directly using the vibration dataas an input, introducing a self-normalizing strategy for standardizing a neuron activating value, training the parameter of the deep convolutional neural network model, storing the trained parameterdata, acquiring the data in a real-time working condition as testing data, and realizing fault detection through the deep convolutional neural network model. The detecting method and the monitoring system have advantages of realizing no requirement for an accurate mathematical model of an industrial process, facilitating actual application, realizing fault detection and fault working condition classification, effectively monitoring a specific component with mechanical damage, and realizing high detection accuracy.

The invention relates to an ultrasonic monitoring sensor for the corrosion of a steel bar in concrete. The ultrasonic monitoring sensor is characterized by being provided with a steel bar (1), wherein a piezoelectric ceramic column (2) for transmitting is arranged at one end of the steel bar (1) and is used for transmitting ultrasonic waves; a piezoelectric ceramic column (3) for receiving is arranged at the other end of the steel bar (1) and is used for receiving the ultrasonic waves; the axial directions of the piezoelectric ceramic column (2) and the piezoelectric ceramic column (3) are the same as the axial direction of the steel bar; the piezoelectric ceramic column (2) for transmitting and the piezoelectric ceramic column (3) for receiving are provided with a shielding lead wire (4) for transmitting and a shielding lead wire (5) for receiving, respectively; the shielding lead wire (4) for transmitting and the shielding lead wire (5) for receiving are externally provided with a resin insulating layer (6) and a shielding layer (7), respectively; in the use process, the sensor is buried into the concrete during construction; the shielding lead wire (4) for transmitting is connected with a signal generator (8) to generate the ultrasonic waves and the shielding lead wire (5) for receiving is connected with a signal receiver (9) to receive the ultrasonic waves; the corrosion condition of the steel bar in the concrete (10) is monitored according to the change of received ultrasonic wave signals.

Provided is a monitoring method and a monitoring system of wind turbine blades. The monitoring method comprises the following steps: vibration signals of blades of wind turbines are collected by sensors; the vibration signals are extracted by a hub measurement unit disposed in the hub; the vibration signals are forwarded to a data analysis unit disposed in the cabin by the hub measuring unit; the vibration signals of different blades in the wind turbine are compared to monitor whether the blades are damaged or not. After an embodiment of the monitoring method is adopted, the damage to blades in the wind power generation unit can be monitored in real time.

A large-scale structure sensing resource conflict and function reuse collaboration and fusion monitoring system comprises a blackboard which is used for recording original data, an intermediate structure and an evaluation result, an agent which is used for storing domain knowledge and a supervision and management main body; the agent which is provided with a communication interface performs communication collaboration with other main bodies through the blackboard; the supervision and management main body obtains blackboard data change to control the agent to achieve respective tasks and accordingly coordinates the integral system to achieve resource and function reuse of a distributed type sensing network and achieve rapid and accurate position of static load and impulsive load. The large-scale structure sensing resource conflict and function reuse collaboration and fusion monitoring system is used for monitoring structural strain signals caused by the static load and the impulsive load in large scale engineering structures and redundancy characteristics of different sensors and redundancy information of the same sensor are extracted by the distributed type sensing network which is formed by a strain sensor, an FBG (fiber Bragg Grating) sensor and a piezoelectric sensor due to collaboration of a self-organization sensor network and a estimation method to accurately and rapidly monitor damage.

The invention relates to a piezoelectric ceramic tube-based cylindrical intelligent aggregate device and belongs to the civil engineering concrete component structure health monitoring field. Concrete structures are affected by external environment during construction and service processes, and as a result, the structures will be damaged to different degrees, as for a pure concrete columnar component, tiny cracks and damage will occur on the interior and surface of the pure concrete columnar component, and as for a concrete filled steel tube, concrete will be peeled from a steel tube to different degrees. As for the radial damage of this type of columnar structure, based on a characteristic that concrete cracks and the peeling of concrete from a steel tube may affect a wave transfer path, and the energy of received waves will be decreased, active, passive and impedance methods are utilized to infer the states of the concrete and the concrete filled steel tube structure through the change of received signal energy and spectra; and simple and feasible method can be provided for the damage and peeling monitoring of the concrete or the concrete filled steel tube based on the piezoelectric ceramic tube-based cylindrical intelligent aggregate device.

The invention discloses a structure test detection method based on a three-dimensional laser scanning technology. The structure test detection method comprises the specific steps of placing a test object, selecting and arranging the position and the number of three-dimensional laser scanner observation stations, setting the position and the number of three-dimensional laser scanning target balls,detecting the test object and processing a detection result. The three-dimensional laser scanning technology is applied to the structure test, and the whole process of the structure test is detected and monitored. According to the structure test detection method based on the three-dimensional laser scanning technology, the full-displacement field of the structure can be tested, the full-deformation field of the structure is obtained, and the cracking, failure and damage modes of the structure can be fed back in all directions and in the whole process. According to the structure test detectionmethod provided by the invention, scientific research personnel can be helped to comprehensively master various changes of the structure in the test process, and the accuracy of understanding, analyzing and mastering the mechanical property of the structure can be greatly improved.

The invention provides a grid displacement testing system and method based on a ten-shaft sensor. The grid displacement testing method comprises the steps that a ten-shaft sensor chip is embedded intoa geogrid; the ten-shaft sensor chip acquires data information of a monitoring point and uploads the data information to a monitoring cloud management platform; the monitoring cloud management platform obtains geogrid deformation amount and displacement change of the monitoring point through comprehensive analysis according to the acquired data information, conducts error correction processing onthe data information, reduces data error rate and improves data integrity rate; the monitoring cloud management platform synchronously updates the data information acquired by the ten-shaft sensor chip and analysis results to a monitoring database server; a remote monitoring center extracts data in the monitoring database server, obtains the width and extension trend of cracks produced by a wholestructure of the geogrid after further processing, monitors the overall damage trend of the geogrid in real time and finally achieves automatic monitoring of the overall state of the geogrid and early warning of geological disasters.

The invention discloses a natural gas riser early warning system based on optical fiber sensing. Damage data is collected through an optical fiber sensor in a signal collector, the damage data is stored in a centralized mode through a data concentrator, the damage data is processed through a data processor, a damage recognition module calls the damage data and judges whether the damage data exceeds a threshold value or not, and if the damage data exceeds the threshold value, an alarm is triggered; if the damage data does not exceed the threshold value, an alarm control module is not started, adisplay module receives an alarm signal output by a damage recognition signal, and image video information and sound-light reminding information of the alarm signal are displayed through an image display unit and a sound-light display unit. The natural gas riser early warning system is formed by connecting multiple modules, the structure is safe and reliable, the application range is wide, the leakage risk of a natural gas riser is reduced, the safety of people is guaranteed, losses are reduced, people and the environment are effectively prevented from suffering from unexpected harm in time,and the application range is very wide.

The present invention discloses a wind tunnel testing method based on temperature sensing fiber positioning detection mainly applied to the field of pipeline leak detection. Through establishing a testing device in a powdered media pipeline transportation process, the environment of a powdered media transportation pipeline and various possible damage states of the transportation pipeline, various characteristics after pipeline damage are measured from the outer wall of the transportation pipeline by using a temperature sensing fiber, the data characteristics after pipeline damage are summed and are used as the judgment basis of early warning in actual monitoring, thus the damage of a pipeline lining can be effectively monitored in real time, the early warning of accident risks is realized, and the method has a huge significance for industrial fire safety.

The invention discloses a plate shearing machine device and a plate shearing machine device monitoring system in the technical field of plate shearing machines. The plate shearing machine device comprises a shell assembly, a clamping assembly, a distance measuring assembly and a monitoring control assembly; the clamping assembly is arranged at the top of a storage platform, and connected with a lead screw transmission assembly; the distance measuring assembly is installed on the right side face of the shell assembly, and arranged at the upper end of the storage platform; one part of the monitoring control assembly is installed on the shell assembly, the other part of the monitoring control assembly is installed on the storage platform, and the monitoring control assembly is electrically connected with the lead screw transmission assembly. According to the plate shearing machine device and the plate shearing machine device monitoring system, the shearing size can be adjusted at will as required, use is convenient, the working efficiency is improved, sheared plates can be counted, sheared notches are subjected to high-definition camera shooting detection through a high-definition camera, the damage degree of a cutter is monitored, and the product quality is improved.

The invention discloses an intelligent concrete slope monitoring system which comprises a concrete slope data acquisition module, a concrete slope monitoring module, a GPS satellite monitoring module and a central processing module. The concrete slope data acquisition module is used for acquiring stirring data and pouring data of a concrete slope, the concrete slope monitoring module is used for acquiring monitoring data of the concrete slope, and the GPS satellite monitoring module is used for acquiring a satellite cloud picture of the concrete slope. The central processing module is respectively connected with the concrete slope data acquisition module, the concrete slope monitoring module and the GPS satellite monitoring module, and is used for storing stirring data, pouring data, monitoring data and satellite cloud pictures of the concrete slope and analyzing the damage condition of the concrete slope. According to the invention, ground information acquisition and GPS satellite monitoring are combined, the influence of ground surface deformation, ground surface settlement and cracking on the concrete slope is obtained, intelligent monitoring of the damage condition of the concrete slope is realized, and an important basis is provided for maintenance of the concrete slope.

The invention discloses a cable body damage monitoring method and system for an inhaul cable type bridge provided with a main longitudinal beam. According to the method, finite element analysis software, bridge on-site modal monitoring, cable force monitoring and single cable body broken wire test are used; monitoring of inhaul cable type bridge damage conditions is achieved through bridge modal monitoring data, inhaul cable force monitoring data, single cable body broken wire test data and corresponding calculation and analysis theories and simulation methods. By means of the method, the wirebreakage amount of a single cable body can be accurately calculated, the inhaul cable damage condition of the inhaul cable type bridge with the longitudinal beam system can be monitored in real time,an alarm is given timely and accurately once the wire breakage amount exceeds an early warning value, the safety of the inhaul cable type bridge is improved, and potential safety hazards are eradicated.

The invention discloses an integrity monitoring method of a field power transmission iron tower. The method includes following steps: 1) a plurality of inclined monitoring points are set on the powertransmission iron tower, an inclination change of the power transmission iron tower is monitored, and data is transmitted to a unified signal relay if the inclination changes; and 2) the signal relaydetermines signals, and if the signals are continued for greater than 2s without interruption, the signal relay transmits the position of the power transmission iron tower to a monitoring center and monitoring personnel is promoted. According to the method, through monitoring of angular deviation of the power transmission iron tower, the structural deformation and damage can be monitored, and footing change of the power transmission iron tower can also be monitored. The iron tower inclines due to footing change, the inclination monitor can monitor the weak inclination, the monitoring personnelcan be monitored in time, prevention is performed in advance, and collapse accidents of the iron tower are avoided.

The invention discloses an intelligent brick device for monitoring the damage degree of a single wall and a monitoring method thereof. The device includes five intelligent bricks. An intelligent brickA is embedded with four square piezoelectric ceramic chips, and the positive and negative wires of all the piezoelectric ceramic chips embedded into grooves are respectively connected into positive and negative wire pin holes. The intelligent brick A can simultaneously emit stress wave signals in four directions. Each of an intelligent brick B, an intelligent brick C, an intelligent brick D and an intelligent brick E is embedded with one piezoelectric ceramic chip for receiving signals. Each intelligent brick is composed of two parts: one is a slotted brick doped with steel fibers, and the other is a piezoelectric ceramic with a copper shielding shell installed inside. By making full use of high strength of the square bricks doped with steel fibers and good compatibility of the square bricks with the masonry structure, the influence of an intelligent brick sensor on a tested structure is reduced. The intelligent brick device has the advantages of inexpensive materials, simple structure and high applicability. A simple and feasible method is provided for damage monitoring of a single wall.

The invention discloses a fluidized bed coal gasifying gas-cavity-free distribution plate and a fluidized bed coal gasifying assembly and relates to the technical field of fluidized bed coal gasificatio; the fluidized bed coal gasifying gas-cavity-free distribution plate comprise a body, the body is integrally of a conical structure, and the body comprises a metal plate, a gasifying agent distribution main pipe and a preset number of gasifying agent distribution branch pipes communicated with the gasifying agent distribution main pipe, a fire-resistant insulating layer and a fire-resistant wear-resistant layer are sequentially laid on the inner side of the metal plate, the gasifying agent distribution main pipe and the gasifying agent distribution branch pipes are embedded in the fire-resistant insulating layer and the fire-resistant wear-resistant layer, the gasifying agent distribution branch pipes are horizontally arranged, and outlets of the gasifying agent distribution branch pipes are flush with the inner side surface of the fire-resistant wear-resistant layer. The fluidized bed coal gasifying gas-cavity-free distribution plate also comprise a preset number of gasifying agent inlets connected to the gasifier distribution main pipe. According to the technical scheme, tubular gas distribution is adopted, and compared with the mode that holes are directly formed in a distribution plate, the pressure difference of gas distribution pipes can be greatly increased, so that gas distribution is more uniform.

The invention relates to a method for testing the wind load of an external thermal insulation system of a building. The method comprises the following steps of: cutting a silica gel sponge board into a cubic board block; coating an adhesive on the front and back side surfaces of the cubic block of the silica gel sponge board; uniformly sticking the two side surfaces to the surface of the tested thermal insulation system fixed on a base wall and the surface of a pulling board respectively and tightly compacting, wherein the pulling board is connected with a tension device through a spring; pulling the spring, the pulling board and the cubic block of the silica gel sponge board through the tension device so as to apply tension to the tested thermal insulation system; and testing the wind load by taking the damage of the tested thermal insulation system as the base point. In the method, a flexible tensile intermediate combining the spring and the foaming silicon rubber sponge is adopted,wherein the silicon rubber sponge material has higher strength, tests prove that the tensile strength is over 0.4MPa and thus the material can meet the strength requirement of the tensile test of theconventional external thermal insulation system. Meanwhile, a horizontal tension test method is adopted instead of the vertical tension of the prior art and better meets the practical detection requirements.

Large-scale structural sensing resource conflict and functional reuse collaborative fusion monitoring system, including: blackboard, used to record raw data, intermediate structure and evaluation results; intelligent agent, used to save domain knowledge, with a communication interface and communicate with other agents through the blackboard Communication and collaboration: Supervise and manage the main body, learn the data changes of the blackboard in real time to control the intelligent main body to complete their respective tasks, thereby coordinating the entire system to cooperate to complete the resource and function multiplexing of the distributed sensor network, and realize the rapid response to static loads and impact loads Accurate positioning. Monitor the structural strain signals caused by static loads and impact loads in large-scale engineering structures, use a distributed sensor network composed of strain sensors, fiber grating sensors, and piezoelectric sensors, and extract and fuse different sensors through the collaboration of self-organizing sensor networks and evaluation methods Redundant features of the same sensor and redundant information of the same sensor, in order to accurately and quickly monitor damage.

The invention relates to a JP cabinet, which comprises a cabinet body, and one or more of a power supply and distribution device, an electric power metering device, a protection relay protection device and a reactive power compensation device are arranged in the cabinet body; the outer wall of the cabinet body comprises an inner layer, a middle layer and an outer layer, and the middle layer is provided with a pressure sensor; the JP cabinet is also internally provided with a communication module, which is connected with the output end of the pressure sensor and is in communication connection with a monitoring center. According to the invention, the problem that the JP cabinet is damaged due to external force damage can be known under an unattended condition.

The invention relates to the technical field of surge protection devices and particularly discloses a self-locking surge protection device. The self-locking surge protection device comprises a first insulator, a surge protector arranged on the first insulator and a sensor, wherein the first insulator is provided with a plurality of first power supply terminals and a plurality of first signal terminals; a plurality of concave holes and a plurality of clamping grooves are formed in the first insulator; first contact parts of the plurality of first power supply terminals are accommodated into theplurality of concave holes separately; the surge protection device is inserted into an external butting connector and then moved in actual use, and clamping pieces of the butting connector are clamped into the corresponding clamping grooves, thereby locking the surge protection device on the butting connector and achieving self-locking of the surge protection device; and the first power supply terminals are used for providing the surge protector and the sensor with electricity and the sensor is used for detecting on / off of the surge protector and transmitting a detection signal through the first signal terminals, so that a user can conveniently monitor whether the surge protection device is damaged or not.

The invention discloses a multifunctional milk tea unmanned vending machine which comprises a framework structure with a rectangular outline, wherein the framework structure is composed of an upper milk tea machine framework and a lower milk tea machine framework. A front upper cover plate, a first transparent cover plate, a second transparent cover plate, a third transparent cover plate, a top cover plate, a rear upper cover plate, a rear lower cover plate, a left upper cover plate and a left lower cover plate which are used for sealing the inner space of the frame structure are arranged on the outer side of the frame structure, and a wastewater funnel is arranged at the joint of the milk tea machine upper framework and the milk tea machine lower framework; the bottom of the waste water funnel is connected with a waste water barrel, the waste water barrel falls on a plate-shaped structure at the lower end of the lower framework of the milk tea machine, a clear water storage barrel is fixed above the plate-shaped structure where the waste water barrel is located, two pairs of loudspeaker sound holes are formed in the upper end of the front upper cover plate, and a milk tea taking opening and a straw taking opening are formed in the front upper cover plate. The multifunctional milk tea unmanned vending machine can realize unmanned vending of milk tea, and is high in automation degree and suitable for being widely popularized and used.

The invention discloses an intelligent brick device and a monitoring method for monitoring the damage degree of a single wall. The device includes five smart bricks; four square piezoelectric ceramic sheets are embedded in the smart brick A, and the positive and negative wires of all the piezoelectric ceramic chips embedded in the groove are respectively connected to the positive and negative wire pinholes; the smart brick A can transmit stress wave signals to four directions at the same time; smart bricks B, smart brick C, smart brick D and smart brick E are respectively embedded with a piezoelectric ceramic chip for receiving signals; the smart brick is composed of the following two parts : One part is a slotted brick mixed with steel fibers, and the other part is a piezoelectric ceramic with a copper shielding shell installed inside. The invention makes full use of the characteristics of high strength and good compatibility with the masonry structure of square bricks mixed with steel fibers, and reduces the impact of the smart brick sensor on the measured structure; the material of the invention is cheap, the structure is simple, and the applicability is strong. A simple and feasible method is provided for the damage monitoring of single wall.

Provided is a sliding member for an internal combustion engine including a self-test material for monitoring damage to the sliding member in a highly reliable and simple manner. In a sliding member for an internal combustion engine, which contains a self-checking material for monitoring damage to the sliding member, the sliding member has a single-layer or multi-layer structure made of a metal, alloy, and / or resin material, and the self-checking material is embedded in at least one of the layers constituting the sliding member. The self-test material is comprised of at least one material that reacts to external energy and exhibits signal characteristics.

The invention belongs to the field of mechanical property testing for materials, and discloses a large biaxial in-situ in-plane transmission type fatigue tester, which comprises an X-axis module and a Y-axis module with the same structure, and each of the X-axis module and the Y-axis module comprises a motor, a coupling, a first synchronous belt pulley, a synchronous belt, a second synchronous belt pulley, a left-handed and right-handed rotation ballscrew, a crossbeam, a fixture, a load sensor, a grating ruler, and a grating ruler reading head; each part in the internal X-axis module (or Y-axis module) is arranged in a space defined by the crossbeam and the left-handed and right-handed rotation ballscrew in the external Y-axis module (or X-axis module); and the crossbeam and the fixture in the external Y-axis module (or X-axis module) are connected with each other by adopting a door-shaped support, so that the left-handed and right-handed rotation ballscrew in the internal X-axis module (or Y-axis module) passes through the middle of the door-shaped support. The large biaxial in-situ in-plane transmission type fatigue tester has the advantages of high precision, long travel, high safety and wide load range, and can cooperate with a microcosmic observation instrument to carry out the in-situ measurement on microstructure changes in a material under the action of uniaxial and biaxial loads.

The invention discloses a device and method for measuring side resistance and end resistance of an expansion pile in a coral sand foundation. The device comprises a measuring cylinder, a hollow bracket and a dial indicator, cover bodies are arranged at the upper end and the lower end of the measuring cylinder, holes are formed in the middles of the cover bodies, sealing plates are detachably arranged at the holes, the measuring cylinder is used for containing coral sand, reserved pipes are inserted into the holes, and space reserved by the reserved pipes is used for pouring expansive cement mortar; a force restraining frame is detachably arranged outside the measuring cylinder, and the upper end or the lower end of the measuring cylinder is matched with the hydraulic jack; a reaction frame is arranged above the measuring cylinder, the hollow support is used for being placed above or below the measuring cylinder, and the dial indicator is used for detecting displacement of the expansion pile. The coral island reef environment is simulated, the side resistance and the end resistance are measured, and the variables are controlled, so that the measurement result is more accurate and closer to the actual environment, the test is more accurate, and the research on the characteristics of the expansion pile in the coral sand is facilitated.

The invention discloses a tangential displacement testing device for a building shock insulation rubber pipe, which comprises a rack, a vertical mounting seat and a horizontal mounting seat. A limiting sliding plate is fixedly arranged above the vertical mounting seat, a first hydraulic cylinder is fixedly arranged above the rack, and the free end of the first hydraulic cylinder passes through therack and is fixedly connected with the sliding plate; a sliding block is fixedly arranged below the horizontal mounting seat, the sliding block is in sliding connection with a horizontal sliding railbelow the rack, a second hydraulic cylinder is fixedly arranged on one side of the rack, and the free end of the second hydraulic cylinder penetrates through the rack and is fixedly connected with the horizontal mounting seat; mounting holes are arranged in the opposite surfaces of the vertical mounting seat and horizontal mounting seat, and the mounting holes are matched with an end socket of the building shock insulation rubber pipe to be tested. The structure achieves the independent loading in the horizontal direction and the vertical direction and also achieves the loading in the vertical direction and the horizontal direction simultaneously; so that the simulation of various use conditions is achieved, the accuracy of a test result is improved, and the performance monitoring of damage, fatigue and the like of a pipe is facilitated.

The invention discloses a wind tunnel test method based on temperature-sensing optical fiber positioning and detection, which is mainly used in the field of pipeline leakage detection. By establishing a test device in the process of powder medium pipeline transportation, the environment of the powder medium transportation pipeline and the transportation pipeline can be simulated. Various possible damage states, use the temperature-sensing optical fiber to measure the various characteristics of the damaged pipeline from the outer wall of the conveying pipeline, and summarize the data characteristics of the damaged pipeline, and use this as the basis for the judgment of early warning in actual monitoring. It is of great significance for industrial fire safety to be able to effectively monitor the damage of the pipeline lining in real time and realize the early warning of accident risks.

The invention relates to a fluorescent developer, in particular to naphthdianthrone and salt thereof, which are injected intravenously or taken orally and displays the biliary tract and gall stones in operation. After being injected intravenously or taken orally, the developer is taken by hepatic cells, is discharged along with bile, is firmly combined with the gall stones and generates fluorescence under the excitation of certain wavelength light. The naphthdianthrone and salt thereof and developer provided by the invention are convenient for identifying the biliary tract structure, finding the intrahepatic and extrahepatic biliary duct stone and monitoring biliary tract damage and bile leakage in open surgery and peritoneoscope and choledochoscope surgeries.