CN103245968A - Rolling type motion sensor device and using method thereof - Google Patents
Rolling type motion sensor device and using method thereof Download PDFInfo
- Publication number
- CN103245968A CN103245968A CN2013101425466A CN201310142546A CN103245968A CN 103245968 A CN103245968 A CN 103245968A CN 2013101425466 A CN2013101425466 A CN 2013101425466A CN 201310142546 A CN201310142546 A CN 201310142546A CN 103245968 A CN103245968 A CN 103245968A
- Authority
- CN
- China
- Prior art keywords
- sensor
- seismic
- scroll wheel
- wheel
- type motion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a rolling type motion sensor device and a using method thereof. A sensor (1) is fixedly mounted on the wheel axle (4) of a rolling wheel (2), points to the coupling direction, and moves on a medium surface together with the rolling wheel (2); and the sensor is indirectly coupled with the medium surface, on which the sensor (1) moves, through a wheel axle surface (3), so that a seismic signal can be transmitted to the sensor mounted and coupled onto the wheel axle (4). A seismic source (13) and the rolling wheel (2) continues moving forward at the same time; a seismic signal collecting instrument (7) is used for completing the sequent collection of the seismic exploration records of the medium surface; the sequentially-collected seismic exploration records form a seismic arrangement; and the seismic arrangement is used for exploring and recognizing the potential hazards (12) below the rolling medium surface. The sensor maintains the sensor mounting and coupling direction during moving, realizes sequent collection of the seismic signals during rolling forward, is a key component suitable for continuous detections for potential hazards (12) of a roadbed or concrete structure quality.
Description
Technical field
The present invention relates to a kind of tumbling-type motion sensor device and using method thereof, belong to seismic prospecting or Non-Destructive Testing in geophysical survey and the engineering investigation, be applied to than flat surface medium internal engineering hidden danger and defective prospecting, hidden danger such as the cavity that has particularly generated under various reinforced concrete members or highway, the railway bed or soon generated, crack are surveyed.
Technical background
In armoured concrete slab, beam, post and avenue, highway, railway bed final acceptance of construction and later stage maintenance and the operation, hidden danger is surveyed and assessment under the reinforced concrete surface layer, concerning the use safety of similar structures, operation life etc., be subjected to engineering circle and extensively pay attention to.
The geophysical prospecting method of covering hidden danger detection employing under reinforced concrete or the roadbed comprises geological radar, ground roll exploration, resistivity method.Geological radar and resistivity method respectively with dielectric structure specific inductive capacity and resistivity contrasts as main prerequisite, the directly mechanical property of reaction medium structure and the state surveyed.Geological radar can reflect the existence of roadbed hidden danger to a certain extent, but its depth of exploration is very limited; In addition, because geological radar belongs to electromagnetic wave one class equipment, in the intensive xoncrete structure of reinforcing bar, implement to detect the serious interference that is subjected to, can't be competent at the detection task sometimes.The exploration of elastic wave such as ground roll or seismic prospecting can provide the velocity of wave parameter relevant with being detected the dielectric structure Mechanical Characters of Composite Ground, but can only fix with the movement that sensor is finished in the manual type pointwise usually, when implementing seismic prospecting or Non-Destructive Testing record acquisition, it is low to measure efficient and automaticity, is not suitable for the field engineering requirement.
If a kind of continuous Fast Detection Technique can be provided, the physical parameter index relevant with roadbed interior media structural mechanics character can be provided, can form the vehicular continuous probe again, improve operating efficiency, for covering hidden troubles removing under the roadbed and reinforcing the resolution design important value be arranged.
Be seismic prospecting or the Non-Destructive Testing of theoretical foundation with the elastic wave propagation principle, if continuous movement and the coupled problem of sensor solved simultaneously, then can form new roadbed hidden danger and survey and assessment technology.
Summary of the invention
First technical matters to be solved by this invention provides a kind of tumbling-type motion sensor device that can realize fast continuously that elastic wave receives.
Second technical matters to be solved by this invention provides the using method of covering the tumbling-type motion sensor device of hidden danger or dielectric structure situation under the continuous quick detection xoncrete structure of a kind of energy or the roadbed.
In order to solve above-mentioned first technical matters, tumbling-type motion sensor device provided by the invention, comprise at least one sensor, focus and vibration signal acquisition instrument, described sensor is fixed on the wheel shaft of scroll wheel, point to required coupling direction, described scroll wheel passes through axle-wheel tourelle and rolls around described wheel shaft rotation, and described scroll wheel integral body is made for the rigidity material; Or described scroll wheel be can be in hemispherical or ring-band shape supporting frame the spherical ball of free rolling, described spherical ball is advanced along dielectric surface 360 directions in described hemispherical or ring-band shape supporting frame, and described sensor is fixed on the described hemispherical or ring-band shape supporting frame.
Described sensor is magnetoelectric sensor or piezoelectric transducer, and described sensor is simple component, two components or many component sensors.
Described scroll wheel is one or more; A plurality of described sensors are arranged in parallel perpendicular to working direction or suitable described scroll wheel working direction linear array.
A plurality of same specifications are installed on the wheel shaft of one or more described scroll wheels simultaneously with the described sensor of coupling direction, are that axis of symmetry becomes symmetry to install and fix with described scroll wheel, the output signal parallel connection.
Described scroll wheel pastes the ground surface of contact and makes dentation or cutting edge shape, to adapt to the detected dielectric surface coupling condition of different flatness.
In order to solve above-mentioned second technical matters, the method for use tumbling-type motion sensor device provided by the invention, described signal of sensor and described vibration signal acquisition instrument adopt and communicate to connect; Described focus and described scroll wheel continue to move ahead synchronously, described focus gradation is at the approximate elastic wave pulse of dielectric surface excitation, provide synchronizing signal by trigger to described vibration signal acquisition instrument simultaneously successively, finished the collection successively of dielectric surface seismic prospecting record by described vibration signal acquisition instrument, acquisition and recording forms the seismic arrangement record successively, is lain concealed the detection identification of hidden danger under the rolling dielectric surface by this seismic arrangement record.
Signal transmission between described sensor and the described vibration signal acquisition instrument is transmitted by lead or by WIFI Network Based or blue tooth wireless communication mode.
The installation coupling direction of described sensor is freely determined as required, to detect dissimilar seismic events.
Adopt tumbling-type motion sensor device and the using method thereof of technique scheme, sensor is fixed on the wheel shaft of scroll wheel, point to required coupling direction, scroll wheel rotates in the rolling process around the axis of rolling by axle-wheel tourelle, the wheel shaft relative fixed guarantees that the coupling direction of sensor is constant; Sensor is delivered to the dielectric surface vibration signal sensor that is installed on the axis of rolling by wheel shaft surface and the dielectric surface coupling of exercising.Sensor is installed in can be on the scroll wheel wheel shaft that axle freely rotates, and when scroll wheel rolled, wheel shaft does not rotate, and was static relatively.Scroll wheel is whole to be made for the rigidity material, is detected the vibrations of dielectric surface by the coupling of scroll wheel surface, is delivered to wheel shaft by scroll wheel again, is delivered to the sensor that is installed on the scroll wheel wheel shaft again.Sensor can be one or more in magnetoelectric sensor, piezoelectric transducer or other sensor, and sensor can be simple component, two components or many component sensors.Scroll wheel is used for supporting the directional couple sensor installation, and according to the applied environment condition, scroll wheel can be one or more; A plurality of sensors are arranged in parallel perpendicular to working direction or suitable scroll wheel working direction linear array.A plurality of same specifications can be installed on the axis of rolling simultaneously with the sensor of coupling direction, and for the axis of symmetry symmetry installs and fixes, the output signal parallel connection reaches the enhancing purpose of signal with the scroll wheel.The installation coupling direction of sensor can freely be determined, to detect dissimilar seismic events.
The present invention fundamentally solved sensor steady movement and with the coupling difficult problem of dielectric surface.When Non-Destructive Testing is implemented on the reinforced concrete structure surface, can avoid the electromagnetic interference (EMI) of reinforcing bar, form and survey record data reliably; When under reinforced concrete highway, railway bed, covering the hidden danger detection, can realize continuous detecting by vehicle-mounted mode, improve operating efficiency, ensure depth of exploration, for the reliable detection technique means that provide are provided engineering field quality safety.
Use tumbling-type motion sensor device provided by the invention and using method thereof, relevant focus, seismograph, sensor device can form integrated detecting devices, realize the duration data collection at the volley by vehicle-mounted mode, single big gun multitrace seismogram can be provided continuously, also can connect or the connection of face type by a plurality of sensor device line styles, form single big gun multiple channels collection record, form repeatedly covering to surveying section or zone.For the processing of follow-up data data provides material with explanation.
Carrying scroll wheel itself that sensor advances namely can independently moving, also can be used as the moving wheel of small-sized pick-up unit, through to focus and roll sensor simplified design, can develop and be adapted at the special equipment that the elastic wave continuous detecting is carried out on small scale concrete medium surface.
This invention is applicable to that covering hidden danger under Non-Destructive Testing that various reinforced concrete make up and urban road, highway, the railway bed surveys.
Description of drawings
Fig. 1 is the motion sensor structural representation.
Fig. 2 is the individual scroll wheel relatively of sensor elastic wave signals collecting pattern diagram hour.
Fig. 3 is two sensors way of output in parallel that symmetry is fixed on the scroll wheel both sides.
Fig. 4 is fixed on single motion sensor synoptic diagram on the rolling shaft by sway brace.
Fig. 5 is the elastic wave signals collecting pattern diagram of the individual scroll wheel relatively of sensor when big.
Fig. 6 is a kind of vehicular detection system structural drawing that utilizes the motion wave detector to carry out signals collecting.
Fig. 7 is a kind of reinforced concrete structure detection nondestructive detection system synoptic diagram.
Fig. 8 be scroll wheel be can be in hemispherical or ring-band shape supporting frame the spherical ball synoptic diagram of free rolling.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1 and Fig. 4, sensor 1 is the simple component sensor, and sensor 1 is fixed on the wheel shaft 4 of scroll wheel 2, in the scroll wheel 2 rotation rolling processes, and wheel shaft 4 relative fixed, the coupling direction of assurance sensor 1; When sensor 1 is individual less sensor such as piezoelectric transducer, can be directly installed on the wheel shaft 4, as shown in Figure 1, when sensor 1 is individual bigger sensor such as magnetoelectric sensor, then can be fixed on the wheel shaft 4 of scroll wheel 2 by sway brace 20 cross-over connections.Sensor 1 is delivered to vibration signal the sensor 1 that is installed on the roller bearing 4 by wheel shaft surface 3 and the dielectric surface coupling of exercising.The output signal of sensor 1 adopts lead 9 to be connected by joint 6 with vibration signal acquisition instrument 7.The cutting edge shape can be made in the wheel edge on scroll wheel 2 contact medium surfaces, is fit to sensor 1 at particular medium surface coupling environment.This sensor 1 keeps sensor 1 that the coupling direction is installed at the volley, realizes continuous vibration signal collection in rolling moves ahead, and is a kind of key component that is applicable to roadbed hidden danger 12 or concrete body quality continuous detecting.
Referring to Fig. 3, sensor 1 is two component sensors, and a plurality of same specification sensors 1 can be installed on the wheel shaft 4 simultaneously, and sensor 1 symmetry is placed in both sides or the central authorities of scroll wheel 2, and the output signal parallel connection reaches the enhancing purpose of signal.The output signal of sensor 1 adopts lead 9 to be connected with vibration signal acquisition instrument 7.
Referring to Fig. 2 and Fig. 5, the using method of motion sensor has been described.Focus 13 continues to move ahead with scroll wheel 2 simultaneously, focus 13 gradation are at the approximate elastic wave pulse of dielectric surface excitation, provide synchronizing signal by trigger 10 to vibration signal acquisition instrument 7 simultaneously successively, finished the collection successively of dielectric surface seismic prospecting record by vibration signal acquisition instrument 7, acquisition and recording forms the seismic arrangement record successively, lain concealed the detection identification of hidden danger 12 under the rolling dielectric surface by this seismic arrangement record, sensor 1 is many component sensors, a plurality of same specifications are installed on the wheel shaft 4 of a plurality of scroll wheels 2 simultaneously with the described sensor 1 of coupling direction, be that axis of symmetry becomes symmetry to install and fix with scroll wheel 2, the output signal parallel connection.
Referring to Fig. 6, the vehicular detection system structure of carrying motion sensor has been described.In order to improve detection system efficient, focus 13 and sensor 1 can pass through inspection vehicle 15 same moved further, and sensor 1 moves ahead by towing arm 14, and guarantees the coupling direction that it is correct, finishes the collection of elastic wave signal in inspection vehicle 15 is advanced.This covering device has improved collecting efficiency, is fit to the detection of highway, railway bed hidden danger.Scroll wheel 2 is a plurality of; Sensor 1 is many component sensors, and a plurality of sensors 1 are arranged in parallel perpendicular to working direction or suitable scroll wheel working direction linear array.
Referring to Fig. 7, a kind of reinforced concrete structure detection nondestructive detection system synoptic diagram has been described, on the direction perpendicular to ground, sensor 1 moving wheel as pick-up unit 16 of two or four rollings own, be attached to detected reinforced concrete 21 apparent motions, focus 13 moves with pick-up unit 16 by drawbar 17, cooperates two passages or four-way seismic signal acquisition instrument 7 to finish the elastic wave vibration test.Pick-up unit is small and exquisite flexibly, can finish the elastic wave test with the reinforced concrete ceiling on the reinforced column of erectting.
Referring to Fig. 8, a kind of tumbling-type motion sensor support has been described, scroll wheel 2 be can be in hemispherical or ring-band shape supporting frame 19 the spherical ball 18 of free rolling, spherical ball 18 is advanced along dielectric surface 360 directions in hemispherical or ring-band shape supporting frame 19, sensor 1 be fixed on hemispherical or ring-band shape supporting frame 19 on, the transmission of signal between sensor 1 and the vibration signal acquisition instrument 7 is transmitted by WIFI Network Based or blue tooth wireless communication mode.Tumbling-type motion sensor support utilizes universal ball ball to make, sensor integral body can become 360 directions to roll along dielectric surface, sensor 1 be fixed on hemispherical or ring-band shape supporting frame 19 on, be in relative static conditions, can tow supporting band dynamic sensor 1 motion with drawbar during engineer operation; Similar Fig. 7, sensor 1 also can directly use as the road wheel that detects dolly itself.
Claims (8)
1. tumbling-type motion sensor device, comprise at least one sensor (1), focus (13) and vibration signal acquisition instrument (7), it is characterized in that: described sensor (1) is fixed on the wheel shaft (4) of scroll wheel (2), point to required coupling direction, described scroll wheel (2) passes through axle-wheel tourelle (5) and rolls around described wheel shaft (4) rotation, and described scroll wheel (2) integral body is made for the rigidity material; Or described scroll wheel (2) be can be in hemispherical or ring-band shape supporting frame (19) the spherical ball of free rolling (18), described spherical ball (18) is advanced along dielectric surface 360 directions in described hemispherical or ring-band shape supporting frame (19), and described sensor (1) is fixed on the described hemispherical or ring-band shape supporting frame (19).
2. tumbling-type motion sensor device according to claim 1, it is characterized in that: described sensor (1) is magnetoelectric sensor or piezoelectric transducer, described sensor is simple component, two components or many component sensors.
3. tumbling-type motion sensor device according to claim 1 and 2, it is characterized in that: described scroll wheel (2) is one or more; A plurality of described sensors (1) are arranged in parallel perpendicular to working direction or suitable described scroll wheel (2) working direction linear array.
4. tumbling-type motion sensor device according to claim 1 and 2, it is characterized in that: a plurality of same specifications are installed on the wheel shaft (4) of one or more described scroll wheels (2) simultaneously with the described sensor (1) of coupling direction, be that axis of symmetry becomes symmetry to install and fix with described scroll wheel (2), the output signal parallel connection.
5. tumbling-type motion sensor device according to claim 1 and 2 is characterized in that: described scroll wheel (2) pastes the ground surface of contact and makes dentation or cutting edge shape, to adapt to the detected dielectric surface coupling condition of different flatness.
6. right to use requires the method for 1 described tumbling-type motion sensor device, it is characterized in that: the output signal of described sensor (1) and described vibration signal acquisition instrument (7) adopt and communicate to connect; Described focus (13) continues to move ahead with described scroll wheel (2) synchronously, described focus (13) gradation is at the approximate elastic wave pulse of dielectric surface excitation, provide synchronizing signal by trigger (10) to described vibration signal acquisition instrument (7) simultaneously successively, finished the collection successively of dielectric surface seismic prospecting record by described vibration signal acquisition instrument (7), acquisition and recording forms the seismic arrangement record successively, is lain concealed the detection identification of hidden danger under the rolling dielectric surface (12) by this seismic arrangement record.
7. the method for use tumbling-type motion sensor device according to claim 6 is characterized in that: the signal transmission between described sensor (1) and the described vibration signal acquisition instrument (7) is transmitted by lead (9) or by WIFI Network Based or blue tooth wireless communication mode.
8. according to the method for claim 6 or 7 described use tumbling-type motion sensor device, it is characterized in that: the installation coupling direction of described sensor (1) is freely determined as required, to detect dissimilar seismic events.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101425466A CN103245968A (en) | 2013-04-23 | 2013-04-23 | Rolling type motion sensor device and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101425466A CN103245968A (en) | 2013-04-23 | 2013-04-23 | Rolling type motion sensor device and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103245968A true CN103245968A (en) | 2013-08-14 |
Family
ID=48925602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101425466A Pending CN103245968A (en) | 2013-04-23 | 2013-04-23 | Rolling type motion sensor device and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103245968A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630926A (en) * | 2013-11-06 | 2014-03-12 | 朱德兵 | Seismic source vehicle for roadbed hidden danger seismic exploration and using method of seismic source vehicle |
| CN106154310A (en) * | 2016-08-18 | 2016-11-23 | 安徽惠洲地质安全研究院股份有限公司 | A kind of Portable city geologic anomaly seismic acquisition system and method |
| CN108363095A (en) * | 2018-05-14 | 2018-08-03 | 招商局重庆交通科研设计院有限公司 | A kind of Surface Wave Method device for fast detecting |
| CN108375788A (en) * | 2018-02-12 | 2018-08-07 | 中国地质大学（北京） | A kind of quick seismic data acquisition device of travelling |
| CN110346453A (en) * | 2019-07-26 | 2019-10-18 | 招商局重庆公路工程检测中心有限公司 | Defect minispread reflection echo rapid detection method in a kind of concrete structure |
| CN110346452A (en) * | 2019-07-26 | 2019-10-18 | 招商局重庆公路工程检测中心有限公司 | A kind of concrete structure superficial layer method for quickly detecting quality |
| CN106371137B (en) * | 2016-08-18 | 2020-05-05 | 安徽惠洲地质安全研究院股份有限公司 | Seismic detection device for shallow abnormal body and three-dimensional observation method thereof |
| CN111650279A (en) * | 2020-06-19 | 2020-09-11 | 禹班工程科技(上海)有限公司 | Wheel type elastic wave detector and detection method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1225453A (en) * | 1998-10-23 | 1999-08-11 | 李钢 | Super sonic flaw detection method for steel rail, probe roller and detecting device therefor |
| US5969255A (en) * | 1996-10-08 | 1999-10-19 | Mclean; Ted | System and method of ultrasonic inspection of tubular members |
| CN1651934A (en) * | 2005-03-11 | 2005-08-10 | 浙江大学 | Optimum coupling and matching method for receiving seismic data by special rectifier |
| CN102662190A (en) * | 2012-05-04 | 2012-09-12 | 同济大学 | Ultrasonic quick scanning exploration method and system for same |
| CN102944607A (en) * | 2012-10-26 | 2013-02-27 | 朱德兵 | Rolling type movement transverse wave sensor and use method thereof |
-
2013
- 2013-04-23 CN CN2013101425466A patent/CN103245968A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5969255A (en) * | 1996-10-08 | 1999-10-19 | Mclean; Ted | System and method of ultrasonic inspection of tubular members |
| CN1225453A (en) * | 1998-10-23 | 1999-08-11 | 李钢 | Super sonic flaw detection method for steel rail, probe roller and detecting device therefor |
| CN1651934A (en) * | 2005-03-11 | 2005-08-10 | 浙江大学 | Optimum coupling and matching method for receiving seismic data by special rectifier |
| CN102662190A (en) * | 2012-05-04 | 2012-09-12 | 同济大学 | Ultrasonic quick scanning exploration method and system for same |
| CN102944607A (en) * | 2012-10-26 | 2013-02-27 | 朱德兵 | Rolling type movement transverse wave sensor and use method thereof |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630926A (en) * | 2013-11-06 | 2014-03-12 | 朱德兵 | Seismic source vehicle for roadbed hidden danger seismic exploration and using method of seismic source vehicle |
| CN103630926B (en) * | 2013-11-06 | 2016-01-20 | 朱德兵 | A kind of roadbed hidden danger seismic prospecting vibrator vehicle and using method thereof |
| CN106154310A (en) * | 2016-08-18 | 2016-11-23 | 安徽惠洲地质安全研究院股份有限公司 | A kind of Portable city geologic anomaly seismic acquisition system and method |
| CN106371137B (en) * | 2016-08-18 | 2020-05-05 | 安徽惠洲地质安全研究院股份有限公司 | Seismic detection device for shallow abnormal body and three-dimensional observation method thereof |
| CN108375788A (en) * | 2018-02-12 | 2018-08-07 | 中国地质大学（北京） | A kind of quick seismic data acquisition device of travelling |
| CN108363095A (en) * | 2018-05-14 | 2018-08-03 | 招商局重庆交通科研设计院有限公司 | A kind of Surface Wave Method device for fast detecting |
| CN108363095B (en) * | 2018-05-14 | 2023-07-18 | 招商局重庆交通科研设计院有限公司 | Quick detection device of face wave method |
| CN110346453A (en) * | 2019-07-26 | 2019-10-18 | 招商局重庆公路工程检测中心有限公司 | Defect minispread reflection echo rapid detection method in a kind of concrete structure |
| CN110346452A (en) * | 2019-07-26 | 2019-10-18 | 招商局重庆公路工程检测中心有限公司 | A kind of concrete structure superficial layer method for quickly detecting quality |
| CN110346452B (en) * | 2019-07-26 | 2021-10-26 | 招商局重庆公路工程检测中心有限公司 | Method for rapidly detecting quality of shallow surface layer of concrete structure |
| CN110346453B (en) * | 2019-07-26 | 2021-10-26 | 招商局重庆公路工程检测中心有限公司 | Method for rapidly detecting reflection echoes of small defect arrays in concrete structure |
| CN111650279A (en) * | 2020-06-19 | 2020-09-11 | 禹班工程科技(上海)有限公司 | Wheel type elastic wave detector and detection method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103245968A (en) | Rolling type motion sensor device and using method thereof | |
| CN101603423B (en) | Direct current method for bed-parallel advanced detection of water bearing structure in mine tunnel | |
| CN102426384B (en) | Method for detecting underground goaf and karst distribution | |
| WO2010142165A1 (en) | Seismic sensor array device and method for data collecting thereof | |
| JP5584718B2 (en) | Pavement cavity exploration method | |
| CN108415066B (en) | Tunnel construction geological disaster forecasting method | |
| CN203225009U (en) | Laser type traffic condition investigation system | |
| CN103063746B (en) | Knock the signal pickup assembly of scan-type damage detection for bridges | |
| CN102788995A (en) | Coal mine working face detecting method with cutting vibration as seismic signal | |
| CN108180346A (en) | A kind of pipeline inspecting robot | |
| CN103088849A (en) | Method of in-service bridge foundation pile stress wave back wave nondestructive testing | |
| CN107642114A (en) | Stake bottom hidden danger method for surveying and its prospecting apparatus before pile foundation cast | |
| CN106371137B (en) | Seismic detection device for shallow abnormal body and three-dimensional observation method thereof | |
| CN106154310A (en) | A kind of Portable city geologic anomaly seismic acquisition system and method | |
| CN103630605B (en) | A kind of prestress anchorage cable pipeline slip casting detection method | |
| CN107110828A (en) | Device, method and system for ultrasonic signal sensor | |
| US3383913A (en) | Measurement of pavement deflection | |
| US8400879B2 (en) | Seismic sensor array devices and methods of data collection | |
| CN110261481A (en) | Point pressure type acquisition device | |
| CN103487825A (en) | Rayleigh-wave automatic detection device for defects of operational highway subgrade | |
| CN103018767A (en) | Acousto-optical detection device and method for shallow buried objects | |
| CN210221915U (en) | Point-pressing type collecting device | |
| CN113311480A (en) | Tunnel unfavorable geology advanced detection system and method based on high-frequency elastic waves | |
| CN210221916U (en) | Roller type collector and collecting device | |
| CN102981181A (en) | Rolling motional longitudinal wave sensor device and using method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130814 |