81 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.

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 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.

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 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 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.

1. Name of the product in this design: Integrated monitoring equipment loading box. 2. Application of this design: for loading protection of blasting vibration, tilt angle, vibration acceleration, vibrating wire data acquisition, multi-functional data acquisition instruments, etc. 3. The key design feature of this product is its shape. 4. The picture or photo that best illustrates the key design points: Design 1 3D diagram 1. 5. Design 1 is designated as the basic design.

The utility model provides a shed support roadway lateral stress detection device, and mainly relates to the technical field of shed support roadway pressure detection. A shed supporting roadway lateral stress detection device comprises an arc-shaped support, connecting plates are hinged to the two ends of the arc-shaped support respectively, connecting bases are symmetrically and fixedly installed on the two sides of the concave face of the arc-shaped support, and a vibrating wire strain gauge is arranged between the two connecting bases. The beneficial effects of the utility model are that when the device is used, the vibrating wire strain gauge can be installed at a corner of a roadway support through the arc-shaped support, thereby realizing stress detection of key parts of the roadway support.

According to the large-span space truss roof inhaul cable force control method, the staged dynamic tensioning and real-time monitoring technology is adopted, non-torsion cable unfolding is completed through mechanical and manual cooperation, and an anti-retraction clamp and a vibrating wire sensor are additionally arranged at the anchoring end; a guide pulley block is used for accurate positioning, and a double-oil-pump four-top synchronous system is used for implementing bidirectional symmetrical tensioning; and a three-stage gradient tensioning process (50-90-105% of designed cable force) is combined with load-holding stabilizing treatment and roof displacement synchronous monitoring. The cable force detection device is fixed through front and rear hoops, a gear meshing type vibrating wire sensor and an anti-twisting structure are arranged in the cable force detection device, accurate measurement is achieved through tooth groove meshing, and a soft cushion layer protects a cable body from being damaged. According to the system, double-top synchronous control is achieved through the oil way flow dividing technology, the multi-stage tensioning technology is matched, the problems of insufficient cable force control precision and asynchronous tensioning of a large-span structure are solved, and the construction safety and the structure forming precision are remarkably improved.

The utility model discloses a cable force monitoring device for bridge suspender replacement, which comprises a steel strand sheath and a plurality of vibrating wire sensors, a plurality of accommodating groove chambers are uniformly arranged in the steel strand sheath, the vibrating wire sensors are respectively arranged in the corresponding accommodating groove chambers, inner side open grooves are uniformly arranged on the inner side circumferential surface of the steel strand sheath, and the inner side open grooves are communicated with the accommodating groove chambers. The inner side open groove is communicated with the containing groove chamber, and a protective ring pad is arranged on the outer side of the steel stranded wire sheath and covers the area of the containing groove chamber. By adopting the sliding connection structure of the protection ring pad and the U-shaped chute, the rapid adjustment of rotation-downward movement-reverse rotation of the protection ring pad is realized, so that the maintenance or replacement of the vibrating wire sensor does not need to disassemble the steel strand sheath, the outer side open slot can be exposed only by sliding the protection ring pad, and the maintenance and replacement are convenient. And the high-altitude operation difficulty and risk are greatly reduced.

Method for manufacturing a loudspeaker with a wire damper or spider with locally adjustable elasticity, comprising the following steps: a preparatory step for the production of a base material that has a single-layer fabric structure and is formed by weaving together a large number of warp threads and a large number of weft threads; an impregnation step in which the base material is impregnated in a resin solution; a drying step in which the base material is dried to form a solid resin layer on the base material; a wire arrangement step in which at least one wire is arranged in at least one wire arrangement area on the base material; a forming step in which the base material and the at least one wire are hot-pressed; wherein the base material is formed with several wave structures and a region with a pre-formed central hole; wherein the at least one wire further presses the at least one wire arrangement area of ​​the base material such that it is recessed inwards to form at least one hollow section, and the at least one wire stretches the warp threads on two sides of the at least one wire arrangement area towards the outer sides, so that the at least one wire enters directly into the at least one hollow section; wherein the wave structures, the preformed area with a central hole and the at least one wire arrangement area are formed with a main body; wherein the at least one wire extends into the at least one hollow section and two ends of the at least one wire each penetrate an inner edge and an outer edge of the main body, such that the main body and the at least one wire are formed with a wire damper, wherein the wave structures are arranged successively or sequentially from an outer edge of the main body to the preformed area with a central hole, wherein each wave structure has a wave crest, a wave trough, an inner side wall and an outer side wall, and wherein the at least one wire arrangement area extends radially from the outer edge of the main body through the wave structures to the preformed area with a central hole;wherein, after the at least one wire stretches the warp threads on two sides of the at least one wire arrangement area towards the outside, a first elastic adjustment area is formed between a warp thread closest to the outside of a first side of the at least one wire arrangement area and a warp thread on the inside of the at least one wire arrangement area, wherein a second elastic adjustment area is formed between a warp thread closest to the outside of a second side of the at least one wire arrangement area and a warp thread on the inside of the at least one wire arrangement area, wherein the widths of the first elastic adjustment area and the second elastic adjustment area are equal to each other and the distances between the remaining warp threads are smaller than the width of the first elastic adjustment area and the second elastic adjustment area;and wherein, after the at least one wire stretches the warp threads towards the outer sides on two sides of the at least one wire arrangement area, each of the depths of the at least one hollow section at the inner side walls and the outer side walls is less than a depth of the at least one hollow section at the wave crests, and wherein each of the depths of the at least one hollow section at the inner side walls and the outer side walls is less than a depth of the at least one hollow section at the wave troughs; ; a cutting step in which the wire damper or centering spider is cut out of the base material and cutting out the pre-formed area with a central hole, so that the wire damper is separated from the base material, wherein the wire damper has a central opening; and an assembly step in which a voice coil is movably arranged in a loudspeaker body, wherein the central hole of the wire damper or the spider is coupled to the voice coil in a sleeve-like manner and the at least one wire of the wire damper or the spider is connected to the voice coil in order to assemble a loudspeaker.

The invention relates to an intelligent screw and an intelligent inhaul cable force monitoring method, the intelligent screw comprises a screw body, the screw body comprises a polished rod section and two threaded sections, the two threaded sections are arranged at the two ends of the polished rod section respectively, one end is used for being connected with an inhaul cable anchorage device, and the other end is used for being connected with an inhaul cable; the plurality of vibrating wire type sensors are uniformly distributed on the periphery of the polished rod section along the axial direction of the screw rod body and are used for converting axial strain generated by the cable force of the stay cable on the screw rod body into a frequency signal of a steel wire and outputting the frequency signal; the resistance type temperature detection assembly is fixedly installed on the surface of the polished rod section and used for measuring the temperature change of the screw body in real time and converting the temperature change into a resistance signal to be output; and the data acquisition and processing device is in signal connection with the plurality of vibrating wire sensors and the resistance-type temperature detection assembly. Real-time sensing and compensation of temperature change are achieved through the integrated resistance type temperature detection assembly, interference of temperature fluctuation on a measurement result can be accurately eliminated, and therefore accurate measurement of the cable force in the service process of the inhaul cable is achieved.

The utility model relates to the technical field of vibration wire acquisition, in particular to an anti-interference enhanced vibration wire acquisition device, which comprises a vibration wire sensor reading instrument, waterproof joints are communicated with two ends of the vibration wire sensor reading instrument, one end of each waterproof joint is communicated with a data cable, an anti-interference sleeve is sleeved on the surface of the data cable, and the anti-interference sleeve is sleeved on the surface of the data cable. An anti-interference filler is installed in a groove formed in the surface of the anti-interference sleeve, the surface of the anti-interference sleeve is sleeved with a protective sleeve, a reinforcing steel plate is installed in the protective sleeve, a reinforcing filler is installed in a groove formed in the surface of the protective sleeve, and the surface of the vibrating wire sensor reading instrument is sleeved with a stainless steel waterproof shell. The vibration wire sensor is simple in structure and convenient to use, the anti-interference capability of the vibration wire sensor is remarkably improved, the vibration wire sensor adapts to the measurement environment with interference, and the accuracy and reliability of collected data are ensured. And the stable operation of the vibrating wire sensor on site is ensured while the installation complexity is not obviously increased.

The utility model relates to hanging basket safety monitoring technical field, concretely point to a kind of safety monitoring device for hanging basket, the device is equipped with six modules: stress monitoring module, at least one vibrating wire stress sensor is equipped in the key stress place of hanging basket main truss, real-time stress data is collected;Displacement monitoring module, laser displacement sensor is fixed at beam end, measures lateral displacement;Environmental monitoring module, wind speed and inclination sensor are split in hanging basket top and bottom, monitor wind speed and inclination angle;Data processing and transmission module, data is handled by microcontroller and wireless communication unit and is uploaded cloud end by 4G / 5G;Alarm module, by sound and light alarm and vibration motor, data threshold value triggers;Power module, power supply is with solar panel and lithium battery group.The utility model solves the problems that the existing hanging basket automatic monitoring device sensor is single, monitoring dimension is narrow, data transmission wiring is difficult, and alarm is only sound and light prompt, prone to early warning omission.

This invention provides a construction method for fencing in tower crane climbing areas, belonging to the technical field of fencing construction for tower crane climbing areas. The invention utilizes adjustable wedge positioning blocks and a level to monitor the verticality of the columns before secondary grouting for fixation. Horizontal bars and panels are inserted layer by layer, and a perforated capping plate with a ventilation rate of not less than 30% is installed. After sandblasting the steel pipes and panels, a two-component epoxy primer and a silicon carbide-doped hard particle anti-slip topcoat are applied sequentially. A biomimetic microstructure anti-climbing layer with a contact friction coefficient not exceeding 0.15 is pasted onto the panel surface. Vibrating wire strain gauges are deployed to continuously collect dynamic response data at key nodes, and a two-layer game theory model is used to calculate the optimal combination of diagonal brace spacing and ventilation rate. The diagonal brace density is then dynamically adjusted based on the equivalent wind pressure back-calculation results. This solves the technical problem that the fencing structural parameters cannot be dynamically and adaptively adjusted according to the measured wind pressure, making it difficult to coordinate and optimize structural safety and anti-climbing performance.