CN109270289A - A kind of speed testing system and test method - Google Patents
A kind of speed testing system and test method Download PDFInfo
- Publication number
- CN109270289A CN109270289A CN201811147193.8A CN201811147193A CN109270289A CN 109270289 A CN109270289 A CN 109270289A CN 201811147193 A CN201811147193 A CN 201811147193A CN 109270289 A CN109270289 A CN 109270289A
- Authority
- CN
- China
- Prior art keywords
- module
- target object
- image
- speed
- information
- 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.)
- Granted
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 42
- 238000010998 test method Methods 0.000 title abstract description 11
- 230000001133 acceleration Effects 0.000 claims abstract description 20
- 238000005259 measurement Methods 0.000 claims description 10
- 238000004364 calculation method Methods 0.000 claims description 8
- 230000005484 gravity Effects 0.000 claims description 5
- 230000002123 temporal effect Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 12
- 230000007547 defect Effects 0.000 abstract description 3
- 238000003384 imaging method Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 239000003086 colorant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/64—Devices characterised by the determination of the time taken to traverse a fixed distance
- G01P3/68—Devices characterised by the determination of the time taken to traverse a fixed distance using optical means, i.e. using infrared, visible, or ultraviolet light
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/16—Applications of indicating, registering, or weighing devices
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The present invention relates to velocity measuring technique fields, refer in particular to a kind of speed testing system and test method, including the mark module for marking target body, the image for obtaining target object and record image the acquisitions moment acquisition module, the acceleration module for calculating speed when target object moves and the output module for exporting result；The mark module includes for the fixing piece of linking objective object, the luminous tube on fixing piece and the driving circuit for driving luminous tube luminous, and the acquisition module is equipped with bandpass filter.A kind of speed testing system provided by the invention and test method, using the method for non-contact direct test speed, avoid range estimation estimation or the defect with test methods such as tape measure stopwatches, required velocity information can be calculated automatically after the image information for obtaining target object, effectively raise the accuracy of test, and test process is efficient, it is convenient.
Description
Technical field
The present invention relates to velocity measuring technique field, a kind of speed testing system and test method are referred in particular to.
Background technique
It, be to crane according to " hoisting machinery safety monitor regulation ", special safety equipment technical regulation and national standard
The major parameters such as lifting velocity, cart and crab traversing speed are monitored measurement, and speed is to judge whether hoisting machinery is transformed
With an important indicator of major maintenance.
At present overhead and gantry cranes tool with and new clothes quantity it is all bigger, manufactory factory, use unit self-test
Or third party detect hoisting machinery lifting velocity, size vehicle speed when often according to nameplate data, visually estimation and letter
Single stopwatch, tape measure etc. determine, acquired results inaccuracy, and detection method is not scientific or low efficiency.Therefore hoisting machinery detector
The missing of device and detection mode it is inefficient, fail to effectively improve enterprise and examine detection quality and efficiency, lagged hoisting machinery inspection
Survey the development of speed techniques.
Summary of the invention
The present invention provides a kind of speed testing system and test method for problem of the prior art, can efficiently easily into
Row test speed, test result are accurate.
In order to solve the above-mentioned technical problem, it the present invention adopts the following technical scheme: a kind of speed testing system, including is used for
The acquisition mould at the acquisition moment of the mark module of marking target body, the image for obtaining target object and record image
Block, the acceleration module for calculating speed when target object moves and the output module for exporting result；The mark
Note module includes for the fixing piece of linking objective object, the luminous tube on fixing piece and for driving luminous tube to shine
Driving circuit, the acquisition module be equipped with bandpass filter.
Further, the acceleration module includes filling for measuring the ranging of distance between target object and acquisition module
It sets, for calculating target object relative to the position computation module of the actual position of acquisition module and for true by what is obtained
The speed calculation module of location information binding time information calculating speed.
Further, the acceleration module is equipped with the identification mould of the luminous point on the image of target object movement for identification
Block.
Further, the identification module is equipped with the center finding module for searching optical spot centre position.
Further, the acquisition module includes image collecting device for obtaining the image of target object and is used for
Record obtains the time recording device at the time of image, and the bandpass filter is set on image collecting device.
Further, the output module includes for the logging modle of writing speed data and for showing data
Display interface.
A kind of testing method, comprising the following steps:
A. installation for luminous mark module and measures target object at a distance from measurement point on target object；
B. start acquisition module, obtain image when target object acts and obtain the time of the image；
C. acceleration module obtains the image and temporal information of acquisition module, and by the light in identification module identification image
Point；
D. position computation module calculates the actual position information of target object according to image and luminous point information；
F. speed calculation module calculates the speed of target object according to the different location information of target object different time
Information.
Further, after the luminous point in step c in identification module identification image, the centre bit of luminous point is found using gravity model appoach
It sets.
Further, position computation module calculates the real-world object position of target object according to calibration coefficient in step d.
Further, in step d velocity information calculate after by output module output speed data and draw out speed become
Change curve.
Beneficial effects of the present invention:
A kind of speed testing system provided by the invention and test method, by installing on target object with luminous tube
Mark module installs bandpass filter on image collecting device, in the image of image acquisition device target object, mesh
Light on mark object can cannot just be passed through by bandpass filter, other stray lights, this makes the imaging of camera have pole
Good evident characteristics, the treatment process in later period become to be simple and efficient, and pass through speed again after the luminous point in identification module identification image
Module is calculated automatically from the actual position information of target object, and the time of cooperation acquisition image can calculate target object not
With the speed at time point；This velocity-measuring system and test method are avoided range estimation and are estimated using the method for non-contact direct test speed
It calculates or with the defects of the test methods such as tape measure stopwatch, can be calculated automatically after the image information of acquisition target object required
Velocity information effectively raises the accuracy of test, and test process is efficient, convenient.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is systematic schematic diagram of the invention.
Include: in appended drawing reference of the Fig. 1 into Fig. 2
1- mark module, 11- luminous tube, 12- driving circuit, 13- fixing piece, 2- acquisition module, 21- bandpass filter,
22- image collecting device, 23- time recording device, 3- acceleration module, 31- range unit, 32- position computation module, 33- speed
Spend computing module, 34- identification module, 35- center finding module, 4- output module, 41- display interface, 42- logging modle.
Specific embodiment
For the ease of the understanding of those skilled in the art, the present invention is made further below with reference to embodiment and attached drawing
Bright, the content that embodiment refers to not is limitation of the invention.The present invention is described in detail below in conjunction with attached drawing.
A kind of speed testing system provided in this embodiment, such as Fig. 1 and Fig. 2, including the label for marking target body
Module 1, the image for obtaining target object and record image acquisition the moment acquisition module 2, for calculating object
The acceleration module 3 and output module 4 for output speed data of speed when body moves；The mark module 1 includes using
In the fixing piece 13 of linking objective object, the luminous tube 11 on fixing piece 13 and the drive for driving luminous tube 11 luminous
Dynamic circuit 12, the acquisition module 2 are equipped with bandpass filter 21.Specifically, fixing piece 13 can for it is any can be by mark module 1
Fixed to the object on target object, such as magnetic block, etc.；The light that luminous tube 11 issues can be blue light, feux rouges or yellow light
Etc. colors light, when luminous tube 11 turns blue coloured light, acquisition module 2 installs blue bandpass filter 21, likewise, luminous tube 11
For other colors light when, the bandpass filter 21 of 21 corresponding color of bandpass filter；When measuring the speed of target object, first lead to
It crosses fixing piece 13 mark module 1 is mounted on target object, drive module 12 drives the luminous tube 11 on mark module 1 to send out
Light, when target object movement is got up, acquisition module 2 obtains the image information of the target object of different time points, image letter
The luminous point that will appear corresponding 11 position of luminous tube on breath, the processing convenient for subsequent acceleration module 3 to image, acceleration module 3
The corresponding position of each image is calculated according to the image information of each time point, in conjunction with the acquisition time of each image,
The speed of target object is calculated, is finally exported the speed data of result by output module 4.This velocity-measuring system is using non-contact
The method of direct test speed avoids range estimation estimation or the defect with test methods such as tape measure stopwatches, is obtaining target object
Image information after can calculate required velocity information automatically, effectively raise the accuracy of test, and test process
Efficiently, convenient.
A kind of speed testing system provided in this embodiment, such as Fig. 1 and Fig. 2, the acceleration module 3 includes for measuring mesh
Mark the range unit 31 of distance between object and acquisition module 2, for calculating true position of the target object relative to acquisition module 2
The speed of the position computation module 32 set and the actual position information binding time information calculating speed for will obtain calculates
Module 33.Preferably, range unit 31 can be any equipment that can be measured distance or determine 3 d space coordinate, such as laser
Rangefinder or total station.Specifically, the distance between target object and acquisition module 2 are measured by range unit 31, obtained
After the image information of target object, is combined image information and the target object measured by position computation module 32 and adopted
Collect the distance between module 2, calculates the actual position information of target object, then each image is combined by speed calculation module 33
The actual position information for the target object that the acquisition time and each time point of information calculate, final speed at calculating；
Acceleration module 3 can carry out the calculating of speed automatically, save manpower, so that the process that tests the speed is more efficient and accurate.
A kind of speed testing system provided in this embodiment, such as Fig. 1 and Fig. 2, the acceleration module 3 is equipped with mesh for identification
Mark the identification module 34 of the luminous point on the image of object of which movement.Specifically, the image letter of target object different time points is got
After breath, due to the bandpass filter 21 on acquisition module 2 can only by target object luminous tube 11 issue color light, because
And there are a luminous points on the image obtained, identify the luminous point in image convenient for subsequent by the identification module 34 of acceleration module 3
Speed calculates；Identification module 34 makes the processing of image become simpler.
A kind of speed testing system provided in this embodiment, such as Fig. 2, the identification module 34 are equipped with for searching in luminous point
The center finding module 35 of heart position.Specifically, the luminous point on image still has a certain size, and setting center finding module 35 is looked for
The central point of luminous point makes subsequent calculating more acurrate out, and center finding module 35 is calculated using common gravity model appoach and searches luminous point
Center.
A kind of speed testing system provided in this embodiment, such as Fig. 1 and Fig. 2, the acquisition module 2 includes for obtaining mesh
Time recording device 23 at the time of marking the image collecting device 22 of the image of object and obtain the image for recording, it is described
Bandpass filter 21 is set on image collecting device 22.Specifically, believed by the image that image collecting device 22 obtains target object
Breath, while the time that image obtains is recorded by time recording device 23, convenient for image and temporal information are transferred to speed
Module 3 carries out analytical calculation.
A kind of speed testing system provided in this embodiment, such as Fig. 1 and Fig. 2, the output module 4 includes for recording speed
The logging modle 42 of degree evidence and display interface 41 for showing data.Specifically, the speed of target object, which calculates, completes
Afterwards, all data are stored and is depicted as speed change curves by the logging modle 42 of output module 4, shown by display interface 41
It is observed out convenient for people.
A kind of testing method provided in this embodiment, includes the next steps:
A. installation for luminous mark module 1 and measures target object at a distance from measurement point on target object；
B. start acquisition module 2, obtain image when target object acts and obtain the time of the image；
C. acceleration module 3 obtains the image and temporal information of acquisition module 2, and is identified in image by identification module 34
Luminous point；
D. position computation module 32 calculates the actual position information of target object according to image and luminous point information；
F. speed calculation module 33 calculates the speed of target object according to the different location information of target object different time
Spend information.
Specifically, in step a, mark module 1 is fixed on target object by fixing piece 13, passes through driving circuit 12
Drive luminous tube 11 to shine, then by range unit 31 measure between target object and measurement point, that is, image collecting device 22 away from
It is calculated from and by data transfer to acceleration module；In step b, after target object starts movement, image collecting device
The image information of 22 timing acquisition target objects, time recording device 23 record the time of each image information acquisition, obtain
To image information and temporal information be transferred to acceleration module；In step c, due to the bandpass filter on image collecting device 22
Piece 21 can only have an apparent luminous point by the light of luminous tube 11 on mark module 1, thus on the image obtained, by identification mould
Block 34 identifies；In step d, target object and measurement that position module 32 is measured according to the information of obtained luminous point and at the beginning
The range data of point is calculated, and the actual location information of target object is obtained, such as the height of target object；In step f, with height
For degree, in the image of each acquisition the true altitude of target object have calculated that come, in conjunction with the image obtained every time when
Between, the speed of target object can be calculated.
A kind of testing method provided in this embodiment is adopted after identification module 34 identifies the luminous point in image in step c
The center of luminous point is found with gravity model appoach.Specifically, the luminous point on image still has a certain size, can be fast using gravity model appoach
The central point for finding out luminous point of speed, so that the subsequent position for calculating target object is more acurrate.
A kind of testing method provided in this embodiment, position computation module 32 is calculated according to calibration coefficient in step d
The real-world object position of target object out.Specifically, calculation method is as follows:
According to the imaging law of lens, 1/u+1/v=1/f, it may be assumed that the sum of the inverse of object distance and the inverse of image distance are equal to focal length
Inverse.Simultaneously according to the operating distance range L of the target object of design measurement and acquisition module 2, the focal length f of camera lens is designed
With image distance v.It can measure the distance L that measurement point, that is, acquisition module 2 arrives target object using range unit 31 in the measurements, it is practical
It is exactly object distance u, the proportionality coefficient R=v/u between real-world object and imaging can be calculated.Therefore, mesh is parsed from image
Mark object coordinate Py, camera imaging point P0, can be calculated by the relationship of proportionality coefficient really height H=(Py-P0)/
R。
Image collecting device 22 can calculate an actual position, together when capturing each width target object image
When measurement the moment time record.Just a time location sequence is formd.
t0,H0；t1,H1；…；tn,Hn…
Speed signal can be obtained by calculating its difference:
△ t0=t1-t0, △ H0=H1-H0, V0=△ H0/ △ t0；
△ t1=t2-t1, △ H1=H2-H1, V1=△ H1/ △ t1；
…
△ tn=tn+1-tn, △ Hn=Hn+1-Hn, Vn=△ Hn/ △ tn；
This makes it possible to obtain velocity series information: V0, V1, V2...Vn.
A kind of testing method provided in this embodiment exports speed by output module 4 after velocity information calculates in step d
Degree accordingly and draws out speed change curves.Specifically, object can more intuitively be indicated by drawing out speed change curves
The velocity variations of body.
The above is only present pre-ferred embodiments, is not intended to limit the present invention in any form, although
The present invention is disclosed as above with preferred embodiment, and however, it is not intended to limit the invention, any person skilled in the art,
It does not depart within the scope of technical solution of the present invention, when the technology contents using the disclosure above make a little change or are modified to equivalent change
The equivalent embodiment of change, but without departing from the technical solutions of the present invention, technology refers to above embodiments according to the present invention
Made any simple modification, equivalent change and modification, belong in the range of technical solution of the present invention.
Claims (10)
1. a kind of speed testing system, it is characterised in that: including for marking target body mark module (1), for obtaining
The image of target object and record image the acquisitions moment acquisition module (2), for calculating speed when target object moves
The acceleration module (3) of degree and output module (4) for output speed data；The mark module (1) includes for connecting
The fixing piece (13) of target object, be set to fixing piece (13) on luminous tube (11) and for drive luminous tube (11) shine
Driving circuit (12), the acquisition module (2) are equipped with bandpass filter (21).
2. a kind of speed testing system according to claim 1, it is characterised in that: the acceleration module (3) includes for surveying
Measure the range unit (31) of distance between target object and acquisition module (2), for calculating target object relative to acquisition module
(2) position computation module (32) of actual position and actual position information binding time information for will obtain calculate speed
The speed calculation module (33) of degree.
3. a kind of speed testing system according to claim 1, it is characterised in that: the acceleration module (3) is equipped with for knowing
The identification module (34) of luminous point on the image of other target object movement.
4. a kind of speed testing system according to claim 3, it is characterised in that: the identification module (34) is equipped with for looking into
Look for the center finding module (35) of optical spot centre position.
5. a kind of speed testing system according to claim 1, it is characterised in that: the acquisition module (2) includes for obtaining
Time recording device at the time of taking the image collecting device (22) of the image of target object and obtain the image for recording
(23), the bandpass filter (21) is set on image collecting device (22).
6. a kind of speed testing system according to claim 1, it is characterised in that: the output module (4) includes for remembering
Record the logging modle (42) of speed data and the display interface (41) for showing data.
7. a kind of testing method, it is characterised in that: the following steps are included:
A. installation for luminous mark module (1) and measures target object at a distance from measurement point on target object；
B. start acquisition module (2), obtain image when target object acts and obtain the time of the image；
C. acceleration module (3) obtains the image and temporal information of acquisition module (2), and by the light in identification module identification image
Point；
D. position computation module (32) calculates the actual position information of target object according to image and luminous point information；
F. speed calculation module (33) calculates the speed of target object according to the different location information of target object different time
Information.
8. a kind of testing method according to claim 7, it is characterised in that: in step c in identification module identification image
Luminous point after, the center of luminous point is found using gravity model appoach.
9. a kind of testing method according to claim 7, it is characterised in that: position computation module (32) root in step d
The real-world object position of target object is calculated according to calibration coefficient.
10. a kind of testing method according to claim 7, it is characterised in that: velocity information in step d calculate after by
Output module (4) output speed data and draw out speed change curves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811147193.8A CN109270289B (en) | 2018-09-29 | 2018-09-29 | Speed testing system and testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811147193.8A CN109270289B (en) | 2018-09-29 | 2018-09-29 | Speed testing system and testing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109270289A true CN109270289A (en) | 2019-01-25 |
| CN109270289B CN109270289B (en) | 2024-06-11 |
Family
ID=65194749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811147193.8A Active CN109270289B (en) | 2018-09-29 | 2018-09-29 | Speed testing system and testing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109270289B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068284A (en) * | 2019-05-20 | 2019-07-30 | 北京建筑大学 | Utilize the method for High frequency photographing measurement technical monitoring derrick crane |
| CN113484172A (en) * | 2021-07-14 | 2021-10-08 | 中国烟草总公司郑州烟草研究院 | Method for measuring pressing speed of cigarette and filter stick hardness detection equipment |
| CN115372651A (en) * | 2022-08-22 | 2022-11-22 | 中国空气动力研究与发展中心超高速空气动力研究所 | Method for measuring object separation speed in signal interruption mode |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4834070A (en) * | 1987-09-30 | 1989-05-30 | Kabushiki Kaisha Toshiba | Endoscope with device for shape recognition |
| JP2003084004A (en) * | 2001-09-13 | 2003-03-19 | Japan Radio Co Ltd | Speed detector |
| JP2006138804A (en) * | 2004-11-15 | 2006-06-01 | Nissan Motor Co Ltd | Method and apparatus for detecting speed of mobile object |
| CN205679758U (en) * | 2016-06-08 | 2016-11-09 | 武汉湾流科技股份有限公司 | A kind of positioning label |
| US20170322232A1 (en) * | 2014-07-30 | 2017-11-09 | Hitachi, Ltd. | Optical velocity measuring apparatus and moving object |
| CN208872768U (en) * | 2018-09-29 | 2019-05-17 | 广东省特种设备检测研究院东莞检测院 | A kind of speed testing system |
-
2018
- 2018-09-29 CN CN201811147193.8A patent/CN109270289B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4834070A (en) * | 1987-09-30 | 1989-05-30 | Kabushiki Kaisha Toshiba | Endoscope with device for shape recognition |
| JP2003084004A (en) * | 2001-09-13 | 2003-03-19 | Japan Radio Co Ltd | Speed detector |
| JP2006138804A (en) * | 2004-11-15 | 2006-06-01 | Nissan Motor Co Ltd | Method and apparatus for detecting speed of mobile object |
| US20170322232A1 (en) * | 2014-07-30 | 2017-11-09 | Hitachi, Ltd. | Optical velocity measuring apparatus and moving object |
| CN205679758U (en) * | 2016-06-08 | 2016-11-09 | 武汉湾流科技股份有限公司 | A kind of positioning label |
| CN208872768U (en) * | 2018-09-29 | 2019-05-17 | 广东省特种设备检测研究院东莞检测院 | A kind of speed testing system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068284A (en) * | 2019-05-20 | 2019-07-30 | 北京建筑大学 | Utilize the method for High frequency photographing measurement technical monitoring derrick crane |
| CN110068284B (en) * | 2019-05-20 | 2020-10-30 | 北京建筑大学 | Method for monitoring tower crane by using high-speed photogrammetry technology |
| CN113484172A (en) * | 2021-07-14 | 2021-10-08 | 中国烟草总公司郑州烟草研究院 | Method for measuring pressing speed of cigarette and filter stick hardness detection equipment |
| CN115372651A (en) * | 2022-08-22 | 2022-11-22 | 中国空气动力研究与发展中心超高速空气动力研究所 | Method for measuring object separation speed in signal interruption mode |
| CN115372651B (en) * | 2022-08-22 | 2024-03-29 | 中国空气动力研究与发展中心超高速空气动力研究所 | Method for measuring object separation speed in signal interruption mode |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109270289B (en) | 2024-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109270289A (en) | A kind of speed testing system and test method | |
| CN107328783A (en) | A kind of bridge intelligent checking system based on unmanned plane | |
| CN108733053A (en) | A kind of Intelligent road detection method based on robot | |
| CN109870279A (en) | Deflection of bridge span detection system and detection method based on digital image processing techniques | |
| CN208872768U (en) | A kind of speed testing system | |
| CN207850304U (en) | A kind of electrification railway contact net detecting system | |
| CN102073028A (en) | Onsite stable state precision calibration system of electronic voltage transformer and calibration method thereof | |
| CN206772257U (en) | A kind of bridge section model system based on High Performance Unmanned Aerial Vehicle | |
| CN102589455B (en) | Standing wood diameter detection device based on laser and visual technology | |
| CN106018179A (en) | Glue material surface viscosity measurement method and device based on image processing | |
| CN111524394A (en) | Method, device and system for improving accuracy of comprehensive track monitoring data of apron | |
| CN202048888U (en) | High speed displacement laser detecting system | |
| CN113012441B (en) | Vehicle parking detection method, system, electronic device, and storage medium | |
| CN109655386A (en) | Particle concentration detection device and detection method | |
| CN103017702A (en) | Method and device for three-coordinate measurement | |
| CN205720094U (en) | A kind of steel wire rope Holographic test system | |
| CN110220617A (en) | A kind of experimental rig of temperature sensor | |
| TWM538518U (en) | Simplified road flatness inspection device | |
| CN110160455A (en) | Clearance surface difference detection system | |
| CN109443221A (en) | A kind of laser displacement inspecting device of video auxiliary | |
| CN102608037B (en) | Device and method for quickly measuring light attenuation coefficient | |
| CN212083317U (en) | Defect magnetic mark measuring system | |
| CN109444150A (en) | Contactless crackle measurement method and its device | |
| CN108254590A (en) | Intelligent vehicle speed detection system and control method thereof | |
| CN205317153U (en) | Be fit for detection mechanism that spare part used |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |