43 results about "Vibrating wire" patented technology

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 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.

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 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 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.

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 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.

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 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.

1. Name of the product in this design: Vibrating Wire Strain Gauge. 2. Purpose of this design: This design is used for measuring strain. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model. 5. The rear view is symmetrical to the front view, so the rear view is omitted.

The utility model discloses a vibrating wire type anchor cable dynamometer, which comprises a dynamometer body, the dynamometer body comprises a measuring steel cylinder and an observation cable, the outer side of the measuring steel cylinder is fixedly connected with a protective steel cylinder, the protective steel cylinder is fixedly arranged on the outer wall of the measuring steel cylinder, and the observation cable is arranged on the outer wall of the measuring steel cylinder. A vibrating wire strain gauge is arranged on the outer wall of the upper side of the measuring steel cylinder, and one end of the observation cable is fixedly connected with the measuring steel cylinder. According to the vibrating wire type anchor cable dynamometer provided by the utility model, firstly, the sealing washer is installed on the outer wall of the measuring steel cylinder, the protective steel cylinders are installed through the fixing bolts, and the two protective steel cylinders are symmetrically installed on the outer side of the sealing washer, so that the measuring steel cylinder is tightly connected to the outer wall of the measuring steel cylinder, and assembly is completed; and then the dynamometer body is mounted between the pressure-bearing pedestal and the working anchor for testing, and the protection steel cylinder and the sealing washer can be dismounted for recovery when data is inaccurate or other conditions are encountered, so that the cost is reduced.

This application discloses a device and method for diagnosing the health status of a vibrating wire sensor, relating to the field of sensor status diagnosis technology. The device includes a main processor, a vibration signal generation module, a linear amplifier circuit, and a saturation amplifier circuit. The vibration signal generation module generates an excitation modulation signal to cause the vibrating wire of the vibrating wire sensor to vibrate. The vibration signal of the vibrating wire sensor is acquired by a signal processing unit. The linear amplifier circuit and the saturation amplifier circuit obtain a linear amplified signal and multiple harmonic signals. The main processor performs time-domain and frequency-domain signal processing on the linear amplified signal and multiple harmonic signals to obtain the signal-to-noise ratio (SNR) value and the duration of each harmonic signal. Based on the time-domain and frequency-domain signals, SNR value, and duration of each harmonic signal in the linear amplified signal and multiple harmonic signals, the health status of the vibrating wire sensor is determined and diagnosed. This application realizes automatic diagnosis of the health status of vibrating wire sensors.

The invention discloses a vibrating wire strain gauge applied to asphalt concrete strain monitoring and an embedding method of the vibrating wire strain gauge. The vibrating wire strain gauge comprises a high-temperature-resistant cable joint, an upper end cover, an upper shell, a lower shell and a lower end cover which are coaxially connected, the high-temperature-resistant cable joint, the upper end cover, the upper shell, the lower shell and the lower end cover are made of stainless steel materials; the high-temperature-resistant cable joint is used for pressing a high-temperature-resistant cable, and the water pressure resistance of the strain gauge under the impact of a high-temperature environment is ensured; a core sensing component is arranged in the upper shell and the lower shell, the tail end of the core sensing component is inserted into an inner hole of the lower end cover, and the tail end of the core sensing component is fixed and sealed in the inner hole of the lower end cover; the high-temperature-resistant cable penetrates through the high-temperature-resistant cable joint and the upper end cover and is connected with the core sensing component; the core sensing component is of an integrated stainless steel structure. The high-temperature-resistant water-pressure-resistant cable can adapt to a high-temperature environment as high as 180 DEG C, and has stable and reliable water pressure resistance.

The utility model discloses a slide plate microcrack monitoring device, and belongs to the technical field of railway monitoring. A slide plate microcrack monitoring device comprises a protective shell and a fixed bottom plate, a vibrating wire strain gauge is arranged on the bottom surface of the fixed bottom plate, the vibrating wire strain gauge is attached to a slide plate for microcrack monitoring during use, and a collecting assembly and a processing assembly collect and process data signals of the vibrating wire strain gauge. And the data is transmitted to a control room terminal for display to prompt a worker to process the abnormal condition of the slide plate in time, so that the data processing efficiency and the slide plate micro-crack monitoring efficiency are improved.

The utility model relates to the technical field of vibrating wire type axial force meters, and discloses a recoverable vibrating wire type axial force meter, which comprises a base plate, a fixed cushion block and an axial force meter main body, the device is characterized by comprising a fixing assembly, a plug-in assembly and a storage assembly, a fixed cushion block is fixedly arranged on the base plate; the axial force meter main body is arranged on the base plate; the fixing assemblies are arranged on two sides of the fixing cushion block, the plugging assembly is arranged at one side end of the axial force meter body, and the storage assembly is arranged at the bottom end of the cushion plate. According to the utility model, the fixing assembly, the plugging assembly and the storage assembly are additionally arranged, and the fixing assembly is in threaded connection with the axial force meter main body through the bolt, so that the installation stability is enhanced; a data transmission line wrapped with a soft steel cable in the plugging assembly is adaptively plugged with a data acquisition line with a plug, so that the connection is ensured and convenient; according to the storage assembly, the data transmission line is stored in the storage box through the base plate and the notches in the storage box, and the data transmission line is effectively prevented from being subjected to external interference such as mechanical collision and severe weather erosion in a complex environment.

The invention relates to the field of structure safety monitoring, and discloses a vibrating wire transverse anchor cable dynamometer, which comprises an upper pressure-bearing body, a lower pressure-bearing body and a steel cylinder, the steel cylinder is used for fixing the upper pressure-bearing body and the lower pressure-bearing body, the upper pressure-bearing body and the lower pressure-bearing body are respectively provided with an axial through hole for an anchor cable to pass through, the end face of the upper pressure-bearing body is flush with the steel cylinder, and the end face of the lower pressure-bearing body is flush with the steel cylinder. Grooves are formed in the upper end face of the upper pressure-bearing body, the grooves are annularly and evenly distributed in the upper end face of the upper pressure-bearing body, vibrating string columns are longitudinally and symmetrically arranged at the grooves, the symmetrically arranged vibrating string columns are used for installing transverse vibrating strings, electromagnetic coil grooves are formed in the surfaces of the grooves, and the lower end face of the lower pressure-bearing body is connected with the upper end face of the upper pressure-bearing body in a matched mode. The non-groove part of the upper end face of the upper pressure-bearing body forms an upper pressure-bearing face, and the lower end face of the lower pressure-bearing body is connected with the upper pressure-bearing face. According to the scheme, the anchor cable dynamometer is compact in structure, small in size and small in occupied space, and the testing sensitivity and the response characteristic are enhanced through the vibrating wire transverse arrangement mode.

This utility model relates to the field of tilt measurement technology, specifically to a vibrating wire tiltmeter, comprising a housing, inside which are two symmetrically arranged steel wires, each with a support at both ends. The support is divided into an upper support and a lower support, with the ends of the steel wires fixed to the upper and lower support via wire clamps. The lower support is connected to the upper support via an elastic hinge. Support seats are fixed on both sides of the lower support for fixing the coil. A counterweight is fixed at the lower end of the lower support. Utilizing the characteristics of the vibrating wire sensor, namely that its output signal natural frequency is determined only by its physical parameters such as tension, length, and linear density and does not require power supply, this sensor exhibits strong long-term stability, strong anti-interference ability, low temperature drift and zero drift, and minimal influence from electrical parameters, enabling it to adapt to long-term observation and long-distance testing under harsh conditions.

A voice coil motor assembly (VCMA), for example for a hard disk drive, includes a low-density voice coil and a high-density coil stiffener located within the wire coil. The low-density voice coil, which uses copper-clad aluminum or aluminum wire, is configured to raise the second torsional mode frequency of the VCMA, thereby bringing it closer to the second torsional mode frequency of the actuator arms. Associated with this, the high-density stiffener, which uses steel, copper, or zinc, is configured to increase the mass of the VCMA to counterbalance the lower-density wire with respect to the VCMA's center of gravity around its axis of rotation.When considered under conditions of customer box vibration and with regard to position error signals (PES), a not insignificant peak in the PES spectrum is largely eliminated due to the second coil torsion mode, and the strength of the PES is reduced to about half.

The utility model provides a kind of concrete strain measuring device, it is related to concrete strain measurement technical field, by setting multiple vibrating wire, and each vibrating wire is connected with detection component, user can measure the strain in different directions when using, by comparing the size difference of strain variable collected in different directions, the position of strain occurrence in concrete can be judged, the functionality when using device is increased, the detection effect is improved, the intelligence of device is improved, and the technical problem that existing concrete strain measuring device cannot judge the specific position and direction of strain occurrence in prior art is alleviated.