63results about How to "Monitor deformation" patented technology

The invention provides an on-line monitoring system of a transformer winding. The on-line monitoring system of the transformer winding is used for accomplishing 24-way voltage and current signal conditioning, data acquisition, signal processing, reactance calculation and communication with a backstage control cabinet of the transformer winding based on a computer real-time data acquisition system. The 24-way voltage and current signal conditioning comprises 12-way voltage connection and conditioning and 12-way current connection and conditioning. Three American national instrument data acquisition cards PCI 6220 are used for synchronously collecting all signals in data acquisition. The on-line monitoring system of the transformer winding has the advantages of being capable of monitoring deformation of a winding by calculating short-circuit reactance of the winding of a main transformer of the converting station on line and in real time, providing important reference for maintenance of the converting station, applicable to field application, and being capable of being actually used in long-term operation, capable of providing rich monitoring functions which comprise input and output of effective values of voltage and current, wave form data, tendency charts of the reactance and the like, capable of providing flexible inquiry statistics based on designs of databases, and capable of enabling a user to review historical operation through rich and various data display forms.

The present invention discloses a smart skin antenna oriented strain sensor layout method. The whole idea of the method is that with positions and the total number of sensors as design variables and with the linear weighted sum of the displacement estimation errors and the total number of sensors as a target function, providing an upper limit of the total number of the sensors; adding an 0-1 topology variable to each position variable; representing a sensor position combination with dual variables; establishing an optimization model; and optimizing positions and the total number of the sensors. The smart skin antenna oriented strain sensor layout method is beneficial in that the number and positions of sensors can be both optimized effectively.

The invention discloses a device for monitoring deformation of a super high-rise building by using laser. The device comprises a laser emitting device, a laser signal receiving device and a data processing system. The laser emitting device includes a laser emitter, a power source and a fixed base; and the laser emitter is fixed on the base. The laser signal receiving device is fixed at the top ofthe super high-rise building. The data processing system calculates the actual swinging displacement, amplitude and variation of the super high-rise building in real time by capturing the spot movingon the laser receiving device; and the information is displayed by using a three-dimensional model. In addition, the invention also discloses a measuring method for monitoring deformation of a super high-rise building by using laser. With the monitoring device, the relevant data including the top swinging displacement, amplitude and variation of the super high-rise building can be obtained effectively; the monitoring accuracy is high and the monitoring speed is fast; and the demand of the all-weather real-time monitoring can be satisfied. The monitoring device has the low cost.

The invention discloses a simulation test method and system of a large-diameter soil pressure shield tunnel driving interface. The system comprises a model box, a shield model, a shield driving system, a water level control device, a seepage tracking device and a monitoring system. A water level control system sends water to different heights of the model box to simulate the underground water level; the seepage tracking device tracks the seepage streamline distribution at the location by the diffusion of a pigment under the action of seepage; and the monitoring system comprises a digital camera, and an earth and water pressure sensor for monitoring the soil deformation, soil warehouse pressure distribution and the fluctuation law of the driving interface. According to the simulation test method and system disclosed by the invention, a large-diameter soil pressure shield driving process is simulated by propelling a soil warehouse partition plate and transporting muck, different water level heights and driving speeds are set, the soil deformation, soil warehouse pressure distribution and the fluctuation law are monitored to study the underground water seepage rule and instability characteristics of the large-diameter shield driving interface in permeable formation, and effective early warning is performed on the instability of the driving interface, and then a corresponding instability mechanism is established.

The invention relates to the fields of slope slip and roadbed settlement, and discloses a fiber grating type sensor. The sensor comprises the components of a fiber (3) which is provided with a fiber grating (4), a housing (1), and a transmission part which is arranged in the housing (1) and is used for transmitting deformation of the housing (1) to the fiber grating (4). One end of the fiber (3) penetrates through the housing (1). The fiber grating type sensor according to the invention can realize high-sensitivity monitoring on deep-part placement and furthermore realizes an advantage of compact structure.

The invention relates to a deformation monitoring method for the existing railway line, which comprises the following steps: (1) selecting right types of total stations and prisms; (2) carrying out point distribution on a line required to be measured, and installing the prism at each measuring point; (3) through site survey, burying a sufficient quantity of datum points and station points convenient to observe the prisms; (4) carrying out real-time measurement on the prisms through the total stations arranged at the station points so as to obtain the three-dimensional coordinate of each prism; and (5) through comparing the three-dimensional coordinates of the prism during different time periods, calculating the deformation value and change rate of the line during the period. The invention is a deformation monitoring method for the existing railway line, which is scientific in design and easy to implement. By using the method disclosed by the invention, the data of settlement and horizontal displacement of the existing railway line in operation can be accurately acquired under the premise of not affecting the operation of the existing line, thereby guaranteeing the necessary monitoring frequency; and the acquired data represents the deformation of the line during all time periods, and finally, the purpose of carrying out real-time monitoring on the existing railway line and guaranteeing the safe operation of trains is achieved.

The invention discloses a bridge rubber support deformation monitoring device comprising a signal processor, an early warning device, a first pressure measurement module which is pre-embedded in a rubber support and a second pressure measurement module which is arranged at the side surface of the rubber support. The output ends of the first pressure measurement module and the second pressure measurement module are electrically connected with the signal processor. The signal processor is electrically connected with the early warning device. The bridge rubber support deformation monitoring device is simple in structure so that the internal and external deformation of the bridge rubber support can be accurately monitored and whether use of the support is affected by deformation and failure can be judged; and detection cost is low so that the detection process, manpower and material resources can be effectively saved, working efficiency can be enhanced, detection work is safe, simple and convenient and the detection result is safe and reliable.

The invention provides an adjustable furnace roller deformation monitoring and alarming device based on infrared intrusion sensors. One end of each furnace roller is a power input end, and the other end of each furnace roller is a free end; furnace roller deformation monitoring devices are installed on two sides of the free ends of one column of furnace rollers and are infrared emitting/receivingportions separately; each emitting/receiving portion comprises a damping base, a slide board, a damping table, a lifting mechanism, an infrared emitter, an infrared receiver, a processing circuit module and an acousto-optic alarm; each infrared emitter emits a horizontal light beam to the corresponding receiver; when the furnace rollers deform or are broken, the light beam is shielded, a receivedelectric signal frequency map changes and cannot be matched with a reference signal frequency, the acousto-optic alarms give an alarm; the sliding boards and lead screw lifting mechanisms can controlthe specific positions of infrared intrusion devices, and monitoring of different deformation amounts is achieved; the damping tables can greatly reduce the longitudinal and transverse vibration transmitted to the sensors when a furnace body works, monitoring and alarming for furnace roller deformation can be carried out, and the operation safety of a furnace is guaranteed.

The invention relates to the technical field of tunnel construction, in particular to a tunnel lining and surrounding rock mechanical characteristic test model device. The device comprises a tunnel model, a rack, a loading system and a measuring system; the tunnel model is constructed in a simulated mode through similar materials according to the actual tunnel size and the reduced scale proportion. The tunnel model is arranged in the rack, the loading system is also arranged in the rack and used for loading the tunnel model, the measuring system is used for measuring the stress and deformationof the tunnel model, and the tunnel model comprises a tunnel lining and peripheral surrounding rock. The tunnel lining and surrounding rock mechanical characteristic test model device can be used forbroad researchers to study the damage-causing mechanism of cavities behind the lining, and the test result can provide reference for actual engineering.

The invention provides a pressure-loaded one-dimensional consolidation and permeability joint test device, which comprises a main device and an auxiliary device. The main device includes a top cover,a base, a laterally confined sample ring body, a permeable stone, a pneumatic loading hole channel, and a loading piston. A high-pressure gas cylinder is used for injecting the air pressure, so that the piston moves down to compress the sample. A linear displacement sensor records vertical deformation of the sample until the deformation is stable. At the same time, a liquid pressure-volume controller injects liquid into the sample and records the injected volume, and records the mass of the effluent liquid, so that the liquid flow rate under the percolation gradient is obtained and a permeability coefficient is calculated. With pore pressure and humidity sensors, axial pore pressure and humidity distribution of the sample under the osmotic pressure effect is recorded. After the seepage flow, humidity and pore pressure become stable, a next-stage load is applied and the seepage test is carried out continuously. The operations are repeated to obtain sample deformation data under variousstages of loads, so that the consolidation coefficient of the sample is calculated; and the fluid-solid coupling characteristics of the soil sample are finally obtained.

The invention relates to a coal and rock mass deformation measurement method and device based on strain/displacement conversion. The coal and rock mass deformation is sensed through a measuring devicefixed to the bottom of a coal and rock mass drill hole and a plurality of movable anchor jaws fixed into the drill hole. A spring or other force/displacement sensors are used for converting coal androck mass deformation into tension changes, then the tension changes are converted into dependent variable changes of a strain module in the measuring device, finally the dependent variable changes are converted into electric signal changes, and the corresponding coal and rock mass deformation is worked out. According to the invention, the displacement is converted into the dependent variable formeasurement, and the adopted sensitive element is the strain gauge, so that the size of the measuring device is greatly reduced, the limitation of a coal mine on the diameter of a drill hole can be met, multi-path measurement can be realized in one set of device, the device cost is reduced, and large-scale popularization is facilitated.

The invention discloses an earth and rockfill dam deformation monitoring method and system based on a corner reflector and a storage medium. The method comprises the steps of: obtaining an SAR image containing a target corner reflector which is disposed on the surface of a dam body of an earth and rockfill dam and located at a target point of the surface of the dam body; determining pixel positioninformation and sub-pixel position information of the target corner reflector in the SAR image based on the SAR image; determining a deformation sequence corresponding to a target point on the surface of the dam body based on the pixel position information and the sub-pixel position information of the target corner reflector in the SAR image; and monitoring the deformation of the target point onthe surface of the dam body based on a plurality of deformation sequences corresponding to the position of the corner reflector so as to monitor the deformation of the surface of the dam body in the vertical direction and the direction perpendicular to the axis of the dam.

The invention relates to the technical field of subway safety, in particular to an operation subway station deformation monitoring method. According to the technical scheme, prisms are arranged at a datum point and a measuring point in a station tunnel according to monitoring specifications and a subway management method, and a total station is arranged at a set station; after the arrangement is finished, an initial value of a monitoring project is measured through the total station; after construction is started, real-time measurement is conducted through the total station to obtain a monitoring project actual measurement value, and the monitoring project actual measurement value is compared with the monitoring project initial value; and comparison results are graded and the results are fed back to a responsible unit. The deformation trend and the deformation amount of the subway tunnel during road construction can be monitored in real time, the deformation rule and characteristics ofthe tunnel are mastered, and data support is provided for guaranteeing subway safety.

The invention provides a construction method of a reinforced concrete structure by using profile steel to replace part of steel bars. The profile steel is mainly used to replace part of the steel bars to manufacture column stiffening members, beam stiffening members, wall stiffening members and plate stiffening members; and the stiffening members can be produced in a factory and then transported to a construction site for assembly and erection. The construction method comprises the steps of lofting, base plate construction, assembly of the stiffening members, establishment of an intelligent monitoring system, water and electricity consumption piping, formwork assembly, concrete grouting, formwork removal and the like. The two opposite side faces of the wall stiffening members and the plate stiffening members are staggered in the transverse direction and the straight direction to form a grid frame shape through the steel bars, the outer ends of the transverse and straight steel bars extend into columns and beams so that formworks can be erected conveniently and the strength of the formworks can be improved, and the intelligent monitoring system is used for monitoring construction safety. In the abovementioned way, the construction time and construction manpower can be greatly saved, and construction safety can be guaranteed.

The invention discloses a steam generator supporting plate edge corner monitoring and measuring system and method, and the system comprises a plurality of information collection devices which are respectively used for collecting the deformation quantity and temperature of a supporting plate at different measurement points, and each information collection device comprises a high-temperature-resistant micrometer which is used for collecting the deformation quantity of the supporting plate at one measurement point; at least one high-temperature-resistant temperature sensor which is used for collecting the temperature of the supporting plate at the measurement point; and a data transmission module which is used for transmitting the deformation quantity and temperature data acquired by the plurality of information acquisition devices to a terminal. The steam generator supporting plate edge corner monitoring and measuring system and measuring method can conveniently, efficiently and accurately monitor and measure the deformation of a nuclear power steam generator supporting plate, and adjust the air supply volume and the air supply direction of an external cooling system in real time through data detected by the monitoring and measuring system, and the deformation of the supporting plate is controlled within a tolerance requirement range.

The invention discloses a main beam deflection monitoring device based on binocular vision, which comprises at least two cameras and a target, the target is fixedly connected with any main beam of a crane, the target comprises two positioning patterns, the mass center of one positioning pattern is located between the top surface and the bottom surface of the main beam, and the mass center of the other positioning pattern is located between the top surface and the bottom surface of the main beam. The shooting directions of the two cameras face the target, and the two cameras are electrically connected with a controller of the monitoring device, so that the three-dimensional change of the mass center of each positioning graph is monitored. According to the main beam deflection monitoring device based on binocular vision and the monitoring method thereof, a binocular vision system is adopted to calculate the real-time mass center positions of two positioning graphs of a target located on a main beam, the real-time mass center positions are compared with the initial mass center positions of the two positioning graphs, and deformation of the central axis of the main beam is calculated according to changes of the mass center positions; therefore, the deflection value of the main beam is calculated according to the deformation of the main beam of the crane, and the deformation of the main beam of the crane is monitored in real time.

A combine harvester online monitoring system is used for monitoring a combined harvester in operation in real time in order to detect abnormal conditions timely. The combine harvester online monitoring system comprises a data acquisition module, a data transmission module, a field bus, a fault diagnosis module, a data concentrator and a server, wherein the data acquisition module acquires the deflection, the inclination, the vibration and the deformation amount of the main force-receiving components on the combined harvester by sensors and then transmits the same to the field bus. The data transmission module transmits the data of the field bus to the data concentrator. The data concentrator wirelessly communicates with the server to summarize the data to the server. The fault diagnosis module detects the working state of each sensor and sends the state information of each sensor to the data concentrator. The combine harvester online monitoring system can monitor the combine harvesterin operation in real time so as to detect abnormal conditions timely and improve the combine harvester.

The invention discloses a hoisting system with an overweight pre-warning function, and belongs to a hoisting system. The hoisting system comprises a hoisting hopper, a steel wire rope, a winding drum and a speed reducer, wherein a redirection pulley is arranged on the upper part of the hoisting hopper; the steel wire rope bypasses the redirection pulley; one end of the steel wire rope is connected with the winding drum; the winding drum is connected with the speed reducer; the other end of the steel wire rope bypassing the redirection pulley is connected with an overweight pre-warning system; the overweight pre-warning system comprises a sensor unit, a detection unit and an alarming unit; the sensor unit is arranged on the steel wire rope; the sensor unit is connected with the detection unit; and the detection unit is connected with the alarming unit. The hoisting system with the overweight pre-warning function can monitor a stress situation of the steel wire rope in real time; a phenomenon that equipment is damaged because of sudden breakage caused by extremely high stress on the steel wire rope is avoided; the weight of coarse aggregates in concrete can meet a requirement in a formula; and extremely high popularization and application value is achieved.

The present invention relates to a piezoelectric film sensor-based manhole cover deformation monitoring system. The piezoelectric film sensor-based manhole cover deformation monitoring system includes a PVDF piezoelectric film sensor, a signal processing module, an A/D converter, a single-chip microcomputer and a communication module; the PVDF piezoelectric film sensor is spirally arranged at the bottom of a manhole cover; the wire of the PVDF piezoelectric film sensor is led out and is connected with the input end of the signal processing module; the output end of the signal processing module is connected with the input end of the A/D converter; the output end of the A/D converter is connected with the input end of the single-chip microcomputer; and the output end of the single-chip microcomputer is connected with the input end of the communication module. The piezoelectric film sensor-based manhole cover deformation monitoring system of the invention has the advantages of convenient installation, flexible operation and high monitoring sensitivity, and can timely feed back the work condition of the manhole cover to a pipeline network operator and can assist in effectively protecting the travel safety of citizens.

The invention provides a structure deformation device based on fiber sensing. The device includes a frame and is characterized in that the frame is fixedly provided with a main supporting rod in the vertical direction, one end of the main supporting rod away from the frame is fixedly provided with a fiber locking device, and a position-adjustable fiber peripheral dimension measurement device is arranged between the fiber locking device and the frame. The device is advantaged in that deformation of the fiber sensor structure can be monitored, reliability of the fiber sensor can be determined according to the deformation dimension, and measurement accuracy of a fiber sensor is improved.

An oil and gas pipeline monitoring system based on a fiber bragg grating is characterized in that an oil and gas pipeline comprises a plurality of oil and gas pipe sections, the adjacent oil and gas pipe sections are connected through connectors, and the monitoring system comprises a fiber bragg grating assembly and a fiber bragg grating modem; the fiber bragg grating assembly is arranged near the connector and is connected with the periphery of the adjacent oil gas pipe section, and the peripheries of the fiber bragg grating assembly and the connector are wrapped by a polystyrene foam protective layer; and the fiber bragg grating modem is connected to the fiber bragg grating assembly through an optical fiber. When the oil and gas pipeline deforms, the fiber bragg grating assembly can sensitively monitor the deformation, if the oil and gas pipeline deforms, the resonance peak value of the fiber bragg grating assembly moves, and the fiber bragg grating assembly transmits peak value movement information to the fiber bragg grating modem. Therefore, the monitoring system can timely and sensitively monitor the deformation of the oil and gas pipeline, and provides a powerful basis for safety protection.