CN108333118B - Retroreflective Marker Measuring Instrument - Google Patents
Retroreflective Marker Measuring Instrument Download PDFInfo
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- CN108333118B CN108333118B CN201710031157.4A CN201710031157A CN108333118B CN 108333118 B CN108333118 B CN 108333118B CN 201710031157 A CN201710031157 A CN 201710031157A CN 108333118 B CN108333118 B CN 108333118B
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- 239000003550 marker Substances 0.000 title claims description 12
- 238000009833 condensation Methods 0.000 claims abstract description 6
- 230000005494 condensation Effects 0.000 claims abstract description 6
- 238000001514 detection method Methods 0.000 claims description 29
- 238000012545 processing Methods 0.000 claims description 13
- 235000014676 Phragmites communis Nutrition 0.000 claims description 12
- 230000003287 optical effect Effects 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 5
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 5
- 241001330002 Bambuseae Species 0.000 claims description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 5
- 239000011425 bamboo Substances 0.000 claims description 5
- 229910052736 halogen Inorganic materials 0.000 claims description 5
- 150000002367 halogens Chemical class 0.000 claims description 5
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 5
- 229910052721 tungsten Inorganic materials 0.000 claims description 5
- 239000010937 tungsten Substances 0.000 claims description 5
- 238000005259 measurement Methods 0.000 description 17
- 239000000463 material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000013307 optical fiber Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000007405 data analysis Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000008571 general function Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Road Signs Or Road Markings (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a retroreflection mark measuring instrument which comprises a shell, a front panel, a light path system, a circuit system, a power supply, a display screen and an instrument switch, wherein the front panel is arranged at the front end of the shell, the light path system, the circuit system and the power supply are arranged in the shell, the display screen and the instrument switch are arranged on the shell, the front panel is provided with a light hole, the circuit system is provided with a light condensation cylinder concentric with the light hole, a light source is arranged in the light path system, the retroreflection mark measuring instrument also comprises a plurality of wedge blocks with different inclinations, the wedge blocks are detachably fixed on the front panel, and the wedge blocks are provided with light holes which are concentric with the light hole. The device is provided with an incident angle adjusting device, so that the incident angle is convenient to adjust, and the workload of measuring staff is reduced.
Description
Technical Field
The invention relates to the technical field of traffic safety, in particular to a retroreflection mark measuring instrument.
Background
The traffic sign and the sign are mainly used for large-scale passenger, truck bodies, traffic road signboards, advertising board signs and the like, are subjected to impact abrasion such as wind, sun, rain, snow, ice, sand dust, stones and the like, so that the light reflection performance of the traffic sign and the sign is reduced, and therefore, the traffic sign and the sign have strict requirements on the performance. Firstly, the drying time is required to be short, and the operation is simple so as to reduce traffic interference; secondly, the reflective capability is required to be strong, the color is vivid, the light reflection degree is strong, and the good visibility is realized in the daytime and at night; thirdly, the wear resistance is provided to ensure the driving safety and the service life, and the long-time wear tends to seriously wear the traffic marking and influence the reflecting capacity of the traffic marking, so that the detection of traffic signs and marks is very necessary in consideration of traffic safety.
Retroreflective signs, raised pavement markings, and markings, etc., are made of retroreflective material, with retroreflection being an optical phenomenon in which reflected light rays return to a light source in a direction opposite to that of the incident light rays. The retroreflective material can achieve the effect of transmitting information such as indication, warning and the like based on the principle. In detecting the retroreflective effect of retroreflective material, it is necessary to test the retroreflective material prior to its use with a retroreflective marker meter. The retroreflection mark measuring instrument is also called traffic mark retroreflection coefficient measuring instrument, and is a special instrument for measuring the retroreflection coefficient (R') of traffic mark material. The instrument meets the standard requirements of GB/T26377-2010 (retroreflective measuring instrument), GB/T163112009 (road traffic marking quality requirement and detection method), JJG (traffic) 059-2004 (retroreflective measuring instrument verification procedure) and the like.
The common retroreflection mark measuring instrument generally measures by using a retroreflection mark measuring instrument with a fixed incidence angle, then a measuring result is obtained by judging the numerical value, when the retroreflection mark measuring instrument is used for measuring, only one retroreflection value of the incidence angle can be measured, but the marks and the marks can be used for judging the optical performance of the marks and the marks by carrying out retroreflection measurement under different incidence angles, so that the measuring of the instrument has larger limitation and has incompleteness of measurement.
At present, the Chinese patent with the authorized bulletin number of CN205620298U discloses a retroreflection mark measuring instrument convenient for detecting multi-angle marks, which comprises an optical camera bellows and a light source, wherein the light source is arranged in the optical camera bellows, an opening is arranged on the surface of the optical camera bellows, a sample shielding the opening is arranged at the opening, a plurality of optical fibers which are used for leading out light reflected by the sample are fixedly connected on the optical camera bellows, each optical fiber corresponds to one placing angle of the sample, and each optical fiber is connected with a light detector which is used for detecting the light led out by the optical fiber, so that the aim of multi-angle measurement is fulfilled. Although the effect of multi-angle measurement can be achieved in the prior art, the sample needs to be manually placed at a corresponding angle to adjust the incident angle and then measurement is started, so that the workload of measurement staff is increased.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a retroreflection mark measuring instrument which is provided with an incident angle adjusting device, so that the incident angle is convenient to adjust, and the workload of measuring staff is reduced.
The technical aim of the invention is realized by the following technical scheme:
the utility model provides a retroreflection mark measuring apparatu, includes the casing, installs at the front end panel of casing front end, sets up light path system, circuit system and the power of in the casing and installs display screen and instrument switch on the casing, the front end panel is equipped with the light trap, circuit system be equipped with the concentric spotlight section of thick bamboo of light trap, be equipped with the light source in the light path system, retroreflection mark measuring apparatu still includes the wedge of a plurality of different inclinations, the wedge can be dismantled to be fixed on the front end panel, set up on the wedge with the light passing hole that the light trap set up with one heart.
Through adopting above-mentioned technical scheme, select the wedge of corresponding inclination according to the test needs, make its one side laminating on the front end panel, the another side is laminated with the surface of survey thing, and the survey thing has an contained angle the same with wedge inclined plane angle with the front end panel to reach the purpose of adjustment incident angle, and then can accomplish the measurement work of different incident angles under the circumstances of different incident angles. The device with different incidence angles can be replaced at any time, the retroreflection coefficient under different incidence angles can be measured, and the object to be measured can be more comprehensively optically measured; the measuring cost is reduced, the working requirements in the standard can be finished by one instrument, the measuring personnel are facilitated, and the working efficiency is improved.
Further, each wedge-shaped block with different inclination is provided with a positioning device corresponding to the inclination of the wedge-shaped block, and an inclination recognition device for recognizing the positioning device is arranged in the shell.
Further, the circuitry includes
The processing module is coupled with the inclination recognition device and receives signals output by the inclination recognition device;
the storage module is coupled with the processing module, is pre-recorded with detection information and is divided into a plurality of sub-modules according to different inclinations;
and the processing module calls the corresponding sub-module according to the information output by the inclination recognition device and displays the sub-module in the display screen.
Through adopting above-mentioned technical scheme, thereby inclination recognition device discerns the inclination of wedge according to positioner on the wedge to thereby confirm the angle of incident angle through processing module to through the display screen of storage module with corresponding detection standard information display, measurement personnel can directly contrast and saved the work of consulting the detection standard.
Further, the positioning device is a first group of magnetic devices, and the inclination recognition device is a plurality of magnetic detection devices.
By adopting the technical scheme, the magnetic device and the magnetic detection device are used as components for representing and identifying the inclination of the wedge-shaped block, and the magnetic device and the magnetic detection device have simple structural principles and are not easy to be interfered by external environments.
Further, the magnetic detection device is embedded in the front panel, and the first set of magnetic devices is embedded in the wedge block.
Through adopting above-mentioned technical scheme, make wedge and front end panel can closely laminate and not leave the gap to guarantee spotlight section of thick bamboo, logical unthreaded hole and light trap closely link to each other in order to guarantee the spotlight effect, and then increase measuring degree of accuracy.
Further, the first set of magnetic devices are permanent magnets, and the magnetic detection devices are reed pipes.
By adopting the technical scheme, the reed switch is used as a magnetic sensitive switch, the structure and the principle are relatively simple, and when the permanent magnet is close to the reed switch, the reed switch is started to output signals, and the magnetic detection device is simple in structure and saves cost.
Further, a second set of magnetic devices are also provided in the front panel.
Through adopting above-mentioned technical scheme, second group magnetic means and first group magnetic means are mutually attracted, can realize dismantling the fixed to the wedge, simple structure is convenient for operate.
Further, the power supply is a mobile power supply.
By adopting the technical scheme, the sign mark can not move, so that the retroreflection sign measuring instrument is required to be placed on the sign mark to be measured during measurement, and the power supply is convenient to carry and use.
Further, the light source is a halogen tungsten lamp.
By adopting the technical scheme, the halogen tungsten lamp can simulate the environment of the car lamp or the street lamp, and the testing environment is more similar to the using environment, so that the test is more accurate.
Furthermore, the light condensation cylinder stretches into the light hole and has the same diameter as the light hole.
Through adopting above-mentioned technical scheme, the outer wall of spotlight section of thick bamboo is laminated with the inner wall of light trap, makes spotlight section of thick bamboo and light trap keep at same epaxial and be difficult to take place the skew to guarantee measuring degree of accuracy.
In summary, the invention has the following beneficial effects: the device with different incidence angles can be replaced at any time, the retroreflection coefficient under different incidence angles can be measured, and the object to be measured can be more comprehensively optically measured; the measuring cost is reduced, the working requirements in the standard can be completed by one instrument, the measuring personnel are facilitated, and the working efficiency is improved; the angle of the incident angle device can be automatically identified, corresponding detection standard information is called, and a measurer can directly compare the angle with the incident angle device, so that the work of consulting the detection standard is omitted, the measurement of the measurer is facilitated, and the working efficiency is improved.
Drawings
FIG. 1 is a schematic view of a first view angle of an embodiment;
FIG. 2 is a schematic diagram of a second view angle of the embodiment;
FIG. 3 is a front view of a wedge block in an embodiment;
FIG. 4 is a schematic diagram of a first view angle of the second embodiment;
FIG. 5 is a schematic diagram of a second view angle of the second embodiment;
fig. 6 is a system block diagram of the second embodiment.
Reference numerals: 1. a housing; 2. an optical path system; 21. a condensing cylinder; 3. a circuit system; 4. a mobile power supply; 5. a front end panel; 51. a light hole; 52. a permanent magnet I; 53. a reed pipe; 6. a display screen; 7. an instrument switch; 8. a handle; 81. a measuring switch; 9. wedge blocks; 91. a light-transmitting hole; 92. a permanent magnet II; 93. and a permanent magnet III.
Detailed Description
The invention is further described with reference to the accompanying drawings.
Embodiment one: the retroreflection mark measuring instrument, as shown in fig. 1 and 2, comprises a shell 1 arranged in a long shape, an optical path system 2 and a circuit system 3 arranged in the shell 1, a mobile power supply 4 arranged on the inner wall of the shell 1, a front panel 5 arranged at the front end of the shell 1, a rear display screen 6 arranged at the rear end of the shell 1, an instrument switch 7 arranged at the top of the shell 1, a handle 8 integrally formed with the shell 1 and arranged at the bottom of the shell, a measuring switch 81 arranged at one side of the handle 8 close to the front panel 5, and four wedge blocks 9 with different angles and serving as incident angle devices, wherein the structure of the optical path system 2 is disclosed in Chinese patent with an authorized notice number of CN 205620298U. The light holes 91 are formed in each wedge-shaped block 9, the light holes 51 which are identical in diameter and are concentrically arranged are formed in the front end panel 5, the front end of the light path system 2 is provided with a light condensation barrel 21, and the diameter of the light condensation barrel 21 is identical with that of the light holes 51 and stretches into the light holes 51. Four permanent magnets I52 are embedded in four corners of the front end panel 5, and four permanent magnets II 92 attracted with the permanent magnets I52 are embedded in the side surfaces of the wedge-shaped block 9, so that the wedge-shaped block 9 is attracted with the front end panel 5.
The working principle and the using process of the retroreflection mark measuring instrument are as follows:
the corresponding wedge-shaped block 9 is selected to be attached to the front end panel 5 according to the measurement requirement, the permanent magnet I52 and the permanent magnet II 92 are attracted to each other, so that the wedge-shaped block 9 is tightly attached to the front end panel 5, and the inclined plane of the wedge-shaped block 9 is attached to the surface of a measured object, so that the measured object and the front end panel 5 have an included angle which is the same as the inclined plane angle of the wedge-shaped block 9, and the aim of adjusting the incident angle is fulfilled. Referring to fig. 3, the faces of the wedge blocks 9 facing away from the front end panel 5 are inclined planes, the inclined planes of the four wedge blocks 9 and the front end panel 5 have angles of alpha, beta, gamma and theta respectively, alpha is-4 degrees, beta is 15 degrees, gamma is 30 degrees, and theta is 40 degrees, so that the requirements of the retroreflection mark measuring instrument in JJG (traffic) 059-2004 on the incident angle when detecting mark marks are met. The light source in the light path system 2 simulates a car lamp or a street lamp environment by a halogen tungsten lamp through the instrument switch 7 and the measuring switch 81, light is emitted from the light condensing barrel 21 of the light path system 2, passes through the light transmitting hole 51 of the front end panel 5, penetrates the light transmitting hole 91 of the wedge-shaped block 9, irradiates the object mark reflective film to be detected, the reflective film generates retroreflection, the retroreflection light passes through the light transmitting hole 91 of the wedge-shaped block 9, passes through the light transmitting hole 51 of the front end panel 5, returns to the light path system 2, is finally received by the light detector in the light path system 2, and finally displays the retroreflection coefficient value of the object to be detected on the display screen 6 through data analysis and calculation of the circuit system 3. The data analysis and calculation of the light detector by the circuitry 3 has the general function of the prior art retroreflective marker gauges shown in the display screen 6 for the values of the retroreflective coefficients, and therefore will not be described in detail here. When the angle measurement is completed and another incident angle is needed to be replaced for measurement, the wedge-shaped block 9 is only required to be taken down, and the wedge-shaped block 9 corresponding to the required incident angle is replaced for measurement. The wedge blocks 9 which are used as incident angle devices with different inclinations are respectively connected with the instrument main body, so that the measurement work of different incident angles can be completed under the condition of different incident angles. The device with different incidence angles can be replaced at any time, the retroreflection coefficient under different incidence angles can be measured, and the object to be measured can be more comprehensively optically measured; the measuring cost is reduced, the working requirements in the standard can be finished by one instrument, the measuring personnel are facilitated, and the working efficiency is improved.
Embodiment two: as shown in fig. 4 and 5, the difference between the second embodiment and the first embodiment is that the reed pipe 53 is embedded in four sides of the front panel 5 as a magnetic detection device, and a plurality of permanent magnets three 93 adapted to the reed pipe 53 are embedded in the side surface of the wedge 9, and the permanent magnets three 93 are arranged in a long strip shape. The number and positions of the permanent magnets three 93 on the wedge 9 of different inclinations are different. In this embodiment, each wedge 9 is provided with a permanent magnet three 93, and the permanent magnets three 93 of the four wedges 9 are respectively disposed at different positions on four sides of the wedge 9, and respectively represent four angles α, β, γ, θ.
The circuitry 3 comprises
The processing module is coupled to the magnetic detection device and is used for receiving signals output by the magnetic detection device, for example, when the wedge block 9 with the angle alpha is selected for detection, the wedge block 9 is attracted on the front panel, and at the moment, the reed switch 53 corresponding to the wedge block 9 with the angle alpha in the magnetic detection device is triggered, and signals are output to the processing module;
the storage module is coupled with the processing module, the included angles between the inclined planes of the four wedge-shaped blocks 9 and the front end panel 5 are alpha, beta, gamma and theta respectively, alpha is-4 degrees, beta is 15 degrees, gamma is 30 degrees, theta is 40 degrees, and detection standard information of corresponding incidence angles required in JJG (traffic) 059-2004 and GB/T163112009 'road traffic marking quality requirement and detection method' are pre-recorded in the storage module; each angle is provided with a corresponding sub-module, which comprises an alpha sub-module, a beta sub-module, a gamma sub-module and a theta sub-module;
when the processing module receives the signal output by the alpha angle wedge block 9, the information in the alpha submodule is called and displayed through the display screen 6.
The working principle and the using process of the retroreflection mark measuring instrument are as follows:
according to the measurement requirement, the corresponding wedge block 9 is selected to be tightly attached to the front end panel 5, in this embodiment, the wedge block 9 with the inclined plane alpha with the front end panel 5 is selected as the incident angle device, and the inclined plane of the wedge block 9 is attached to the surface of the measured object, so that the measured object and the front end panel 5 have the same inclined angle with the inclined plane angle of the wedge block 9, and the aim of adjusting the incident angle is achieved. The retroreflection mark measuring instrument is started through the instrument switch 7 and the measuring switch 81, and the reed pipes 53 at different positions output corresponding output signals according to the number and arrangement of the permanent magnets III 93 on the wedge-shaped block 9. In this embodiment, the permanent magnet three 93 of the wedge 9 with an included angle α is located at the top edge of the wedge 9, and the α wedge 9 triggers the reed switch 53 corresponding to the α wedge 9, so that the magnetic detection device outputs a corresponding electrical signal, and the principle of the reed switch 53 is not repeated herein because it is an existing element; when the processing module receives the electric signal, the pre-input data in the alpha sub-module are automatically identified and read from the storage module, and the data are displayed on the display screen 6 as a comparison basis. During detection, a light source in the light path system 2 simulates a car lamp or a street lamp environment by a halogen tungsten lamp, light is emitted from the light condensation barrel 21 of the light path system 2, passes through the light transmission hole 51 of the front end panel 5, penetrates the light transmission hole 91 of the wedge-shaped block 9, irradiates the object mark reflective film, and generates retroreflection. The retroreflection coefficient value and the detection standard information of the corresponding angle are displayed on the display screen 6, a measurer can directly compare the retroreflection coefficient value and the detection standard information, the work of consulting the detection standard is omitted, and if the measured retroreflection coefficient is higher than the standard retroreflection coefficient, the mark to be detected can be considered to be in accordance with the standard; if the measured retroreflection coefficient is lower than the standard retroreflection coefficient, the mark to be measured can be considered to be inconsistent with the standard, measurement personnel can conveniently measure the mark, and the working efficiency is improved.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (9)
1. The utility model provides a retroreflection mark measuring apparatu, includes casing (1), installs front end panel (5) at casing (1) front end, sets up optical path system (2), circuit system (3) and power and install display screen (6) and instrument switch (7) on casing (1) in casing (1), front end panel (5) are equipped with light trap (51), circuit system (3) be equipped with light trap (51) endocentric spotlight section of thick bamboo (21), be equipped with the light source in optical path system (2), its characterized in that: the retroreflection mark measuring instrument also comprises a plurality of wedge blocks (9) with different inclinations, wherein the wedge blocks (9) are detachably fixed on the front end panel (5), and the wedge blocks (9) are provided with light transmission holes (91) which are concentrically arranged with the light transmission holes (51); each wedge-shaped block (9) with different inclination is provided with a positioning device corresponding to the inclination of the wedge-shaped block, and an inclination recognition device for recognizing the positioning device is arranged in the shell (1).
2. The retroreflective marker gage of claim 1 wherein: the circuit system (3) comprises a processing module, a slope recognition device and a control module, wherein the processing module is coupled with the slope recognition device and receives signals output by the slope recognition device; the storage module is coupled with the processing module, is pre-recorded with detection information and is divided into a plurality of sub-modules according to different inclinations; and the processing module calls the corresponding sub-module according to the information output by the inclination recognition device and displays the sub-module in the display screen (6).
3. The retroreflective marker gage of claim 1 wherein: the positioning device is a first group of magnetic devices, and the inclination recognition device comprises a plurality of magnetic detection devices.
4. The retroreflective marker gage of claim 3 wherein: the magnetic detection device is embedded in the front end panel (5), and the first group of magnetic devices are embedded in the wedge-shaped block (9).
5. The retroreflective marker gage of claim 4 wherein: the first set of magnetic means is a permanent magnet and the magnetic detection means is a reed switch (53).
6. The retroreflective marker gage of claim 3 wherein: a second group of magnetic devices are also arranged in the front end panel (5).
7. The retroreflective marker gage of claim 1 wherein: the power supply is a mobile power supply (4).
8. The retroreflective marker gage of claim 1 wherein: the light source is a halogen tungsten lamp.
9. The retroreflective marker gage of claim 1 wherein: the light condensation cylinder (21) stretches into the light transmission hole (51) and has the same diameter as the light transmission hole (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710031157.4A CN108333118B (en) | 2017-01-17 | 2017-01-17 | Retroreflective Marker Measuring Instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710031157.4A CN108333118B (en) | 2017-01-17 | 2017-01-17 | Retroreflective Marker Measuring Instrument |
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| Publication Number | Publication Date |
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| CN108333118A CN108333118A (en) | 2018-07-27 |
| CN108333118B true CN108333118B (en) | 2023-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710031157.4A Active CN108333118B (en) | 2017-01-17 | 2017-01-17 | Retroreflective Marker Measuring Instrument |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110108356B (en) * | 2019-06-06 | 2024-04-19 | 四川京炜数字科技有限公司 | Vehicle-mounted road marking retroreflection brightness coefficient testing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2598994A1 (en) * | 2005-02-25 | 2006-08-31 | Belfort Instrument Company | Multiple-angle retroreflectometer |
| CN105866037A (en) * | 2016-04-26 | 2016-08-17 | 北京中交工程仪器研究所 | Non-contact traffic road marking measuring instrument |
| CN205620298U (en) * | 2016-04-21 | 2016-10-05 | 北京中交工程仪器研究所 | Conveniently detect contrary reflective marker measuring apparatu of multi -angle sign |
| CN205808928U (en) * | 2016-07-19 | 2016-12-14 | 四川云盾光电科技有限公司 | A kind of retro-reflecting coefficient test device |
| CN205808907U (en) * | 2016-04-21 | 2016-12-14 | 北京中交工程仪器研究所 | Hand-held retroreflective marking measuring instrument |
| CN206470178U (en) * | 2017-01-17 | 2017-09-05 | 北京中交工程仪器研究所 | Retroreflective marking measuring instrument |
-
2017
- 2017-01-17 CN CN201710031157.4A patent/CN108333118B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2598994A1 (en) * | 2005-02-25 | 2006-08-31 | Belfort Instrument Company | Multiple-angle retroreflectometer |
| CN205620298U (en) * | 2016-04-21 | 2016-10-05 | 北京中交工程仪器研究所 | Conveniently detect contrary reflective marker measuring apparatu of multi -angle sign |
| CN205808907U (en) * | 2016-04-21 | 2016-12-14 | 北京中交工程仪器研究所 | Hand-held retroreflective marking measuring instrument |
| CN105866037A (en) * | 2016-04-26 | 2016-08-17 | 北京中交工程仪器研究所 | Non-contact traffic road marking measuring instrument |
| CN205808928U (en) * | 2016-07-19 | 2016-12-14 | 四川云盾光电科技有限公司 | A kind of retro-reflecting coefficient test device |
| CN206470178U (en) * | 2017-01-17 | 2017-09-05 | 北京中交工程仪器研究所 | Retroreflective marking measuring instrument |
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| Publication number | Publication date |
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| CN108333118A (en) | 2018-07-27 |
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