123 results about "Vibrating wire" patented technology

The invention discloses a stress analysis method for bridge incremental launching construction, and particularly relates to the field of stress analysis. According to the method, a mechanical state matrix is generated by combining wavelet noise reduction and Kalman filtering through distributed optical fibers, a piezoelectric force sensor, a vibrating wire stress meter and other equipment and real-time data; a pushing system-temporary support-beam body coupling dynamic mechanical model is established, and a generalized alpha method is adopted for solving and Bayesian optimization calibration parameters are adopted; key parameters are identified on line through a three-level progressive framework, boundary conditions are dynamically updated in combination with a total station and a laser tracker, and supporting rigidity self-adaptive adjustment is achieved through fuzzy PID control. Model confidence evaluation adopts a residual norm-modal confidence criterion-Bayesian update three-level mechanism, finally, stress distribution, support reaction and displacement deviation are calculated based on a correction model, and a safety index, threshold alarm and risk analysis report is generated through a fuzzy comprehensive evaluation method and fed back to a construction control center in real time.

The invention discloses a tunnel monitoring method and system based on a vibrating wire sensor, and relates to the technical field of tunnel engineering construction safety monitoring, and the method comprises the steps: collecting the vibration frequency data and spatial position coordinates of the vibrating wire sensor in a monitoring region; the method comprises the following steps: calculating a time difference and an energy attenuation ratio between adjacent sensors by extracting spectrum energy density distribution, and constructing a stress wave propagation field; dividing grids in the propagation field to calculate node stress values, generating a stress field distribution cloud picture and extracting a stress concentration area; calculating a gravity center position coordinate change rate and a stress time sequence curve of the stress concentration area, and determining fracture extension parameters; and calculating a surrounding rock bearing capacity attenuation curve based on the parameters, and outputting an early warning signal when the slope exceeds a threshold value. According to the invention, real-time monitoring and early warning of the tunnel surrounding rock instability risk are realized.

The invention discloses a vibrating wire sensor fault diagnosis and repair method, system and device, and a storage medium. The method comprises the steps of collecting an output signal of a vibrating wire sensor; amplitude values of all the collected output signals of the vibrating wire sensor are amplified, and a band-pass filter circuit is used for filtering; inputting the amplified and filtered data into a pre-constructed fault diagnosis and recognition model, and performing feature extraction and classification so as to recognize the vibrating wire sensor with the fault and the fault type of the vibrating wire sensor; according to the fault type, different modes are selected to repair the vibrating wire sensor with the fault; the diagnosis result and the working state of the fault diagnosis and recognition model and the real frequency of the repaired vibrating wire sensor are displayed; and storing all the data for subsequent analysis and iterative updating of a fault diagnosis and recognition model. According to the invention, fault diagnosis and online real-time monitoring can be accurately and effectively carried out on the vibrating wire sensor, and the vibrating wire sensor with faults can be rapidly repaired.

The invention relates to a slope remote monitoring system, and relates to the technical field of slope monitoring, the slope remote monitoring system comprises a monitor, a transmitter and a data management platform, the monitor is installed on a slope and monitors the state of the slope, the monitor comprises a vibrating wire osmometer, and the vibrating wire osmometer comprises a low temperature adjusting assembly; the transmitter is connected with the monitor and is used for receiving and transmitting data monitored by the monitor; and the data management platform is in communication connection with the transmitter through 5G, GPRS, NB-loT, Lora or Beidou GNSS, and is used for receiving the data of the wireless transmitter and performing real-time updating and statistics. The method and the device have the effect that the monitoring result is more accurate.

The invention discloses a vibrating wire strain gauge automatic calibration device with a force value monitoring function, and relates to the field of measuring instrument calibration, the vibrating wire strain gauge automatic calibration device comprises a fixing assembly fixedly connected to a bottom plate, the fixing assembly comprises a first fixing frame and a second fixing frame which are arranged at an interval in the length direction of the bottom plate, and two guide shafts are connected between the two fixing frames; moving assemblies are arranged on the two guide shafts in a linear reciprocating sliding mode. The moving assembly and the first fixing frame are oppositely provided with at least one pair of clamping assemblies which are matched with each other, and the clamping assemblies are used for clamping a to-be-tested vibrating wire strain gauge. The side, facing the first fixing frame, of the moving assembly is connected with a displacement sensor, and the side, deviating from the first fixing frame, of the moving assembly is connected with a driving assembly driving the moving assembly to be close to or away from the first fixing frame. The vibrating wire strain gauge calibration device and method have the advantages of large output force value, high displacement precision, high calibration speed, good safety performance, high applicability and the like, and can meet the calibration requirements of vibrating wire strain gauges of different sizes.

The invention provides a vibrating wire type multi-point displacement meter data processing method. According to the method, displacement data of all monitoring points can be comprehensively collected in the length extension direction of a dam to be monitored through all displacement meters in a vibrating wire type multi-point displacement meter sequence, the collected displacement data are sent to a monitoring server in real time, the data are processed by the monitoring server, a displacement data set is formed, and then the displacement data set is calculated. The monitoring position set is generated according to the original position set and the displacement data set, and the safety level of the dam can be accurately determined according to the difference between the original position and the monitoring position through the preset dam safety evaluation model, so that potential safety hazards can be found in time, and the safety of the dam is improved. Timely early warning and decision support are provided for managers, and the monitoring efficiency is improved.

According to the durability evaluation method for the arch rib of the concrete-filled steel tube arch bridge considering the toughness, comprehensive evaluation on the durability of the arch rib is realized by combining a sensor network, nondestructive testing, a toughness evaluation test, environmental monitoring and an artificial intelligence analysis technology. A vibrating wire strain gauge sensor is arranged on an arch rib to collect strain data in real time; detecting internal defects and temperature abnormity by utilizing ultrasonic detection and infrared thermal imaging technologies; performing an impact test through an impact testing machine, and evaluating the toughness of the arch rib; a weather station is installed to monitor environmental parameters such as temperature, humidity and wind speed, and external factors influencing the performance of the arch rib are obtained. According to the method, data are subjected to MATLAB cleaning processing, a multi-layer neural network and an LSTM time sequence model are constructed through TensorFlow, arch rib durability scores and residual life prediction are generated, and high-risk area maintenance suggestions are provided for evaluation results. According to the method, multi-source data are comprehensively integrated, and accurate evaluation and long-term safety maintenance of the health state of the arch rib are realized.

The invention discloses a slope structural surface roughness coefficient testing method. The method comprises the core steps of structural surface pretreatment, rebound detection, contour curve drawing, roughness measurement and the like. Measuring areas are divided and identified, an average rebound value is obtained by using a rebound apparatus, a surface profile is drawn in combination with a profile curvimeter, and a roughness coefficient JRCn is read by using a multi-range roughness ruler and an electronic subdivision technology; in addition, parameters such as rock wall strength and normal stress can be obtained through a point load instrument, a vibrating wire strain gauge and the like, shear strength is calculated in combination with a Barton-Bandis mode, data of multiple measuring areas are integrated, and dynamic correction results of environmental parameters are associated. According to the method, the test precision and efficiency are improved, data integration and full-period management are realized, and a reliable basis is provided for slope stability evaluation.

The utility model provides a vibrating wire type accelerometer which comprises a shell, a first limiting block and a second limiting block are arranged in the shell, a limiting slide way is formed between the first limiting block and the second limiting block, a sliding block is connected in the limiting slide way in a sliding mode, two clamping mechanisms located on the two opposite sides of the sliding block are arranged in the shell, and the two opposite side walls of the sliding block are connected with steel wires. The two steel strings are located on a sensitive shaft of the vibrating wire type accelerometer, the ends, opposite to the sliding block, of the two steel strings are detachably connected with clamping mechanisms, monitoring assemblies are arranged between the two clamping mechanisms and the sliding block and comprise supports connected to the bottom of the containing cavity, and excitation coils and induction coils are arranged at the tops of the supports. Electromagnetic attraction force is applied to the steel strings through the excitation coil, the steel strings generate vibration, vibration signals are collected through the induction coil, the acceleration can be obtained based on the vibration frequency difference between the vibration signals of the two steel strings, the whole structure is simple, in an unattended online low-frequency vibration monitoring scene, the manufacturing cost can be reduced, and the working efficiency is improved. The method is suitable for large-area popularization.

The utility model discloses a bridge stress-strain signal sensor, and belongs to the field of bridge stress-strain sensors, and the bridge stress-strain signal sensor comprises a vibrating wire type sensor body and fixing mechanisms disposed at two ends of the vibrating wire type sensor body. The fixing mechanism comprises positioning assemblies fixedly installed at the two ends of the vibration wire type sensor body and pre-tightening adjusting assemblies arranged on the side faces of the positioning assemblies and used for adjusting the pre-tightening force of the vibration wire type sensor body. The pre-tightening adjusting assembly comprises a connecting plate used for being connected with the surface of the bridge and sliding rods symmetrically fixed to the connecting plate and slidably connected with the positioning assembly. According to the bridge stress-strain signal sensor, through the welding frame and the friction particles on the connecting plate and filling of the epoxy resin, the fitting degree of the sensor and the surface of a bridge is effectively improved, and the problem of mounting looseness caused by deviation of the flatness of the surface of the bridge is reduced.

The invention relates to the field of geotechnical engineering monitoring. The invention provides a vibrating wire type stress meter and application thereof in tunnel surrounding rock stress monitoring. The device comprises a shaft sleeve, a steel bar, a fixing part, a steel string and an excitation sensing module, the end of the steel bar is located in the shaft sleeve, and the fixing part and the steel string are axially arranged in the shaft sleeve. Fixing parts are arranged at the two ends of the steel string, and the ends, away from the steel string, of the fixing parts are connected with the steel bars. The excitation sensing module is arranged above the steel string and installed outside the shaft sleeve. Wherein the middle part of the steel string is a twisted section, and two ends of the steel string are linear sections. According to the invention, the steel string preferentially releases geometric deformation under the action of axial tensile stress through the pre-arranged twisting section in the middle of the steel string, thereby effectively enlarging the amplitude change caused by micro stress, enhancing the response sensitivity of the steel string, breaking through the structural limitation that the stability and the sensitivity of a traditional stress meter are difficult to achieve at the same time, and improving the reliability of the stress meter. The method is suitable for high-reliability and high-precision application scenes in tunnel surrounding rock stress monitoring.

The present invention discloses a structural crack control measurement device and a measurement method. The device is composed of a first steel pipe and a second steel pipe, both of which are internally provided with vibrating wire strain gauges; elastic linings are arranged in a fitting manner on the inner walls of the first steel pipe and the second steel pipe; the two vibrating wire strain gauges are coaxially arranged with the first steel pipe and the second steel pipe where they are respectively located; the opening directions of the first steel pipe and the second steel pipe point to the principal stress of the concrete; the signal cables of the vibrating wire strain gauges are led out of the cast solid structure; the concrete in the cast solid structure is poured to ensure that the concrete in the first steel pipe and the second steel pipe is filled completely; the data of the two vibrating wire strain gauges during the monitoring and measurement are collected, analyzed and crack controlled in real time. The device provided by the present invention has a simple structure and low cost, truly realizes the stress measurement inside the structure, and the measurement process is easier to implement, strengthens the credibility of the crack measurement data, reduces the error range, and can achieve good prevention and control of cracks caused by temperature stress and the like.

The invention belongs to the technical field of dam monitoring, and provides an operation risk monitoring method and system for a high dam of a hydropower station, and the method comprises the steps: constructing a finite element simulation model of the dam; based on the finite element simulation model, obtaining a mapping relation between the low-order modal data of the dam under the simulated flood discharge working condition and dam mechanical parameters; continuously collecting vibration data at the dam gate A by using a vibration sensor, and judging whether the dam gate A has a flood discharge event in combination with upstream and downstream water level data of the dam gate A; performing modal analysis during operation on a signal acquired by the vibrating wire sensor corresponding to the dam gate A in which the flood discharge event occurs to obtain a low-order modal parameter of the dam; on the basis of the low-order modal parameters of the dam and the mapping relation between the low-order modal parameters and dam mechanical parameters, dam mechanical parameter inversion is carried out through an optimization algorithm; and judging the operation risk of the high dam of the hydropower station according to a dam mechanical parameter inversion result. According to the invention, risk monitoring can be carried out on the dam during flood discharge.

The utility model discloses auxiliary positioning equipment for a vibrating wire type two-point displacement meter, which comprises a bottom plate seat and a fixed point assembly, a sliding groove is transversely formed in the middle of the bottom plate seat, a sliding block is connected to the inner wall of the sliding groove in a sliding mode, and the fixed point assembly used for carrying out fixed point printing on the two ends of the vibrating wire type two-point displacement meter is longitudinally installed in the sliding block. The point fixing assembly comprises a first movable column, a pressing plate, a groove, a reset spring and a point hole drill bit, the pressing plate is fixedly installed at the top of the first movable column, the groove is formed in the outer wall of the middle section of the first movable column, the outer wall of the bottom of the first movable column is sleeved with the reset spring, and the point hole drill bit is fixedly installed at the tail end of the first movable column; the front end of the sliding block is slidably connected with an ejector rod. According to the auxiliary positioning equipment for the vibrating wire type two-point displacement meter, the vibrating wire type two-point displacement meter can be accurately positioned, later trepanning and fixing are facilitated, and meanwhile the device can be prevented from moving in the positioning process.

This invention relates to the field of reservoir dam safety monitoring technology, specifically to a seepage monitoring system and method for reservoir safety monitoring, comprising: a distributed seepage pressure monitoring array, in which multiple high-precision vibrating wire piezometers are arranged on each monitoring cross section of the reservoir dam body to form a three-dimensional monitoring grid, wherein the piezometers are protected by a novel nanofiber filter layer. This invention solves the problems of traditional single-point piezometers being unable to reflect the overall seepage field and being prone to siltation by using the three-dimensional monitoring grid of the distributed seepage pressure monitoring array and the novel nanofiber filter layer. Combined with the double-weir structure of the intelligent water measuring weir group and the ultrasonic silt detection module, it avoids the accuracy deviation caused by siltation in traditional water measuring weirs. Edge computing nodes establish a three-dimensional correlation model of seepage pressure and flow rate with time using an embedded multi-parameter coupling analysis algorithm, which can automatically identify abnormal seepage patterns, solving the problem that traditional monitoring data is isolated and cannot automatically identify potential dam hazards.

The utility model relates to the technical field of horizontal displacement measurement, and discloses a device for measuring horizontal displacement, which comprises a string-type displacement meter, a red datum line is arranged on the outer wall of the front end of the string-type displacement meter, a telescopic movable measuring rod is arranged in the string-type displacement meter, the front end of the measuring rod is in threaded connection with a long hexagon nut, and the rear end of the long hexagon nut is in threaded connection with a nut. One end of the long hexagonal nut is in threaded connection with an outer hexagonal column, and one end of the outer hexagonal column is rotationally connected with a hook; a clamping piece is fixedly installed on the outer wall of the tail end of the string type displacement meter, and a level bubble is arranged on the clamping piece. According to the utility model, during each measurement, the total station is aligned with the red datum line, then the vibrating wire modulus at the moment can be read through the vibrating wire type reading instrument, and then the variation of the horizontal displacement is calculated according to each measurement result, so that the horizontal offset of the dam building is determined, and the whole device can accurately measure the horizontal offset of the dam building through the telescopic change of the vibrating wire type displacement meter. The reading instrument is adopted for measurement, manual reading errors are reduced, and therefore the measurement precision is improved.

The invention discloses a vibration wire sensor health state diagnosis device and method, and relates to the technical field of sensor state diagnosis, the device comprises a main processor, a vibration signal generation module, a linear amplification circuit and a saturation amplification circuit, the vibration signal generation module generates an excitation modulation signal so as to enable a vibration wire of a vibration wire sensor to vibrate, and the linear amplification circuit is connected with the saturation amplification circuit; a vibrating wire vibration signal of the vibrating wire sensor is collected through the signal processing unit, a linear amplification signal and a multiple harmonic signal are obtained through the linear amplification circuit and the saturation amplification circuit, and the main processor carries out time domain and frequency domain signal processing on the linear amplification signal and the multiple harmonic signal. And obtaining a signal-to-noise ratio value and the duration time of each harmonic signal, and judging and diagnosing the health state of the vibrating wire sensor according to the time domain and frequency domain signals in the linear amplification signal and the multiple harmonic signals, the signal-to-noise ratio value and the duration time of each harmonic signal, so that automatic diagnosis of the health state of the vibrating wire sensor is realized.

The invention provides a high-entropy alloy material, a vibrating wire and a vibrating wire strain gauge. Specifically, the invention provides a high-entropy alloy material which comprises Ti, Cr, Cu, Nb and M, and M is V, Al, Si or Mn. The invention further provides application of the high-entropy alloy material in a vibrating wire strain gauge. The high-entropy alloy material can have high yield strength, high elastic limit, low thermal expansion coefficient and low Young modulus at the same time. The vibrating wire strain gauge is high in resolution, good in repetition consistency, good in measurement linearity, high in response speed and small in signal drift.

The utility model provides a telemetering terminal with a vibrating wire interface, which comprises a telemetering terminal body, a master control circuit is arranged in the telemetering terminal body, the vibrating wire interface is arranged at the top of the telemetering terminal body, and a pre-amplification circuit, a filter circuit, a vibration pickup circuit, a vibrating wire circuit, a microcontroller and a vibration excitation circuit are arranged on the master control circuit. The vibrating wire interface is connected with the input end of the pre-amplification circuit, the output end of the pre-amplification circuit is connected with the input end of the filter circuit, the output end of the filter circuit is connected with the input end of the vibration pick-up circuit, the output end of the vibration pick-up circuit is connected with the input end of the vibrating wire circuit, and the input end of the vibrating wire circuit is connected with the input end of the microcontroller. The output end of the microcontroller is connected with the input end of the excitation circuit, the output end of the excitation circuit is connected with the vibrating wire interface, and the problem that the vibrating wire sensor cannot be adapted in the prior art is solved.

The invention discloses a mine downward drift filling stope in-situ comprehensive monitoring system and a use method. The system is composed of a filling body stress monitoring system, a filling body strength monitoring system, a filling body displacement monitoring system and a multi-channel data acquisition module. The stress conditions of a filling body in all directions are monitored through a vibrating wire type soil pressure box and a steel bar meter in the filling body stress monitoring system, and the strength of the filling body is monitored through a wave velocity sensor and a hydraulic oil cylinder in the filling body strength monitoring system. A single-point settlement meter and a transverse displacement meter in the filling body displacement monitoring system are used for monitoring the displacement deformation conditions of the filling body in the vertical direction and the transverse direction respectively. The method has the advantages of comprehensive monitoring indexes, high monitoring precision, sustainable and continuous monitoring and the like.

The utility model discloses a vibrating wire signal conditioning circuit in the field of power electronics, which comprises a filter protection circuit, the filter protection circuit is connected with an excitation power supply circuit and a clamping amplification circuit, and the clamping amplification circuit is connected with an operational amplifier power supply circuit and a hysteresis comparison circuit. Vibrating wire signals of a vibrating wire sensor are received through the filtering protection circuit, the signals are filtered and then output to the clamping amplification circuit, it is ensured that the amplitude of the vibrating wire is not too large, the vibrating wire signals are amplified and then converted into digital signals through the hysteresis comparison circuit, the digital signals are finally sent to the single-chip microcomputer to be sampled, and the output digital signals are good in stability and high in reliability. The fidelity is high, the linearity is good, and the ADC sampling result is more accurate.

The invention discloses an intelligent vibrating wire sensor measurement method with self-identification of serial numbers and temperature compensation, and relates to the technical field of intelligent sensor measurement, and the method comprises the specific steps: configuring various modules for intelligent vibrating wire sensor nodes, and distributing unique serial numbers; after the nodes are started, a dynamic micro-cluster is established; selecting a main node in the micro cluster to construct a local three-dimensional temperature field model and synchronizing; performing temperature data error correction by each node according to the data; and finally, outputting the corrected temperature measurement data marked by the self-identification number by each node, and determining the data affiliation node. According to the invention, unique numbers are distributed for nodes to solve data affiliation chaos; dynamically building a micro cluster and electing a main node to guarantee stable operation; a local three-dimensional temperature field model is built based on the cluster, and the traditional limitation is broken; error types are accurately distinguished and differentiated compensation is carried out, comprehensive correction is carried out in combination with multiple calibration parameters, data additional check codes are output, and transmission completeness is ensured.

The utility model provides a vibration wire type multipoint displacement meter convenient to fix, which comprises a protective cover cylinder, a positioning mounting disc, a ventilation reserved pipe, a communication cable, a buffer pad, a fixing screw, a protective pipe conversion joint, a calibration disc, a measuring rod main body structure, a measuring rod protective pipe, an extension pipe, an external connector, an outer side anchor head and a protective plate shovel, and the protective cover cylinder is in threaded connection with the middle position of the lower part of the positioning mounting disc. The fixing screw sequentially penetrates through the positioning mounting disc and the cushion pad from top to bottom for mounting and fixing, whether mounting is accurate or not is corrected by matching with the scale strip, and the central points of the protective cover cylinder, the positioning mounting disc, the protective tube adapter substitute and the calibration disc are located on the same vertical line. The installation accuracy of the vibrating wire type multi-point displacement meter can be effectively protected; adjustment and installation can be conveniently carried out according to different use environment conditions; under the support and protection of the perforated blade and the buffer spring, the normal work of the displacement detection rod is ensured.

The utility model discloses a steel bar meter convenient to install, and relates to the technical field of steel bar meters, the steel bar meter comprises a vibrating wire type steel bar meter, the left end and the right end of the vibrating wire type steel bar meter are in threaded connection with two connecting rods, and the opposite reverse ends of the two connecting rods are movably connected with two splicing mechanisms. The opposite reverse ends of the two splicing mechanisms are fixedly connected with two mounting mechanisms, and the middles of the two mounting mechanisms are movably connected with structural steel bars. According to the steel bar meter convenient to install, the connecting rod is rotated clockwise, so that the connecting rod is connected with the two ends of the vibration wire type steel bar meter, the auxiliary connecting rod is pushed to the connecting rod, the installing sleeve slides into the installing groove, meanwhile, the arranged limiting block slides into the limiting groove, and then the connecting rod and the auxiliary connecting rod are connected; when not connected, the connecting piece is divided into two sections, so that the connecting piece is convenient to carry, not easy to loosen after being used, stable in connection and capable of achieving a better using effect.

The application discloses a kind of slope structure surface roughness coefficient test methods, including structure surface pretreatment, rebound detection, profile curve drawing and roughness measurement etc. core steps.By dividing measurement area and marking, average rebound value is obtained using a rebound apparatus, surface profile is drawn in combination with a profilograph, and roughness coefficient JRC is read using a multi-range roughness scale and electronic subdivision technique n ; Rock wall strength, normal stress and other parameters can also be obtained using a point load apparatus, a vibrating wire strain gauge and other devices, and the shear strength is calculated in combination with the Barton-Bandis model. The results are dynamically corrected by integrating the data from multiple measurement areas and correlating environmental parameters. This method improves the testing accuracy and efficiency, enables data integration and full-cycle management, and provides a reliable basis for slope stability assessment.

The utility model provides a vibrating wire strain gauge calibration device, which comprises a frame body, a driving mechanism, a grating assembly and a control unit, and is characterized in that the frame body is connected with a sliding assembly in a sliding manner, and the frame body and the sliding assembly are provided with clamping pieces for clamping a vibrating wire strain gauge; the driving mechanism comprises a driving piece and a transmission assembly; the grating assembly comprises a grating ruler and a grating head; the control unit is electrically connected with the driving piece, the grating head and the vibrating wire strain gauge; the driving mechanism is used for driving the sliding assembly to move, and the control unit is used for collecting deformation information of the vibrating wire strain gauge and displacement information of the grating head. According to the vibrating wire strain gauge calibration device provided by the utility model, through the cooperative work of the driving mechanism, the grating assembly and the control unit, the deformation quantity of the vibrating wire strain gauge can be accurately controlled, the deformation information and displacement information of the vibrating wire strain gauge can be accurately obtained, the operation efficiency is improved, the influence of manual intervention is reduced, and the calibration accuracy is improved. Therefore, more accurate and reliable calibration is provided for the vibrating wire strain gauge.

The invention belongs to the technical field of bridge detection devices, and particularly relates to a wide bridge prestress detection device and method. A fixed frame is fixedly mounted on one side of the vibrating wire strain gauge, a storage groove for the rectangular plate to slide is formed in the fixed frame, a connecting block is fixedly mounted at the top of the rectangular plate, and a multi-stage telescopic plate is fixedly mounted on one surface of the connecting block; through the designed structure, rapid cleaning of a bridge installation area is achieved, meanwhile, the cleaning mechanism and the vibrating wire strain gauge are integrated, cleaning is convenient, meanwhile, carrying can be convenient, a worker does not need to additionally carry a cleaning tool, and the designed structure can be repeatedly and efficiently used. By cleaning the mounting area, when the vibrating wire strain gauge is used for mounting and detecting the prestress of the bridge, data can be accurately transmitted during subsequent detection, and data distortion is effectively avoided.

The invention provides a vibrating wire osmometer data processing method and system for a reservoir dam. The method comprises the following steps: respectively acquiring a vibrating wire frequency signal and a temperature signal of a to-be-monitored area of a reservoir dam, determining a temperature feature vector according to the temperature signal, and performing multi-resolution spatial decomposition on the vibrating wire frequency signal according to the temperature feature vector to generate a vibrating wire dynamic feature value corresponding to each resolution space; according to the method, the vibration wire frequency signal and the temperature signal are combined to generate the vibration wire dynamic vector, and then the current state of the to-be-monitored area is determined according to the vibration wire dynamic vector, so that more accurate evaluation of the safety state of the to-be-monitored area of the reservoir dam is realized by comprehensively considering the combination of the vibration wire frequency signal and the temperature signal and utilizing multi-resolution spatial decomposition and feature extraction.

The utility model relates to the technical field of data acquisition, in particular to a modularized multichannel vibrating wire data acquisition and transmission device, which comprises a channel transmission module, a vibrating wire acquisition module and a processing module, and is characterized in that the processing module comprises a first microprocessor, and the channel transmission module, the vibrating wire acquisition module and the first microprocessor are mutually connected in pairs; the channel transmission module comprises a plurality of relay interface modules; the relay interface module comprises a relay group and a second microprocessor, the second microprocessor is respectively connected with the relay group and the first microprocessor, and the output end of the relay group is connected with the vibrating wire acquisition module; the first microprocessor is used for processing data transmitted by the vibrating wire acquisition module; and the second microprocessor is used for controlling the relay group to switch the vibrating wire data acquisition channel. According to the utility model, the technical problems of limited system stability and inflexible function expansion caused by large workload of a microprocessor when a large number of sensors are deployed in an engineering structure in the conventional vibrating wire data acquisition and transmission device are solved.

The present invention provides a method for borrowing and connecting wires of a vibrating wire monitoring instrument when an embedded cable is damaged, including a monitoring instrument, an embedded cable group, and an outgoing cable group. The monitoring instrument corresponding to the abnormal embedded cable group is denoted as the target monitoring instrument, and the corresponding outgoing cable group is denoted as the target outgoing cable group; the attribute output port of the target monitoring instrument is connected to the cable channel corresponding to the attribute in the target outgoing cable group through a cable channel corresponding to the attribute in a group of normal embedded cable groups; the attribute input port of the target monitoring instrument is connected to the loop cable channel corresponding to the attribute in the target outgoing cable group through a cable channel corresponding to the attribute in another group of normal embedded cable groups. In the case of damage to the embedded monitoring cable, the present invention processes the wiring method when the embedded cable of the monitoring instrument is damaged through the "wire borrowing method", and "borrows" the signal of the monitoring instrument corresponding to the damaged embedded cable and accesses it through the embedded monitoring cable of other monitoring instruments, which has the advantages of simplicity and convenience.