The detection means of reflecting material
Technical field
The utility model embodiment is related to a kind of detection means of reflecting material, belongs to detection technique field.
Background technology
In order that driver can see the information that road sign is shown clearly when driving a vehicle at night, road sign is typically to use reflex reflection
What material was made.When car light irradiation road sign, car light produces reflection as incident light in the presence of reflecting material, is formed
Reflected light, reflected light is received by the eyes of driver so that driver can see the information that road sign is shown clearly.
The definition of road sign is determined by the reflecting power of the specific direction of reflecting material, different reflex reflection materials
The reflecting power of material is different.In order that road sign meets the standard requirement of definition, it is necessary to which the reflecting power of reflecting material meets
Standard regulation is (anti-referring in particular to GBT 18833-2012 road traffics reflective membranes and GB 23254-2009 lorries and trailer body
Cursor is known).Accordingly, it would be desirable to a kind of device for the relevant parameter that can simulate associated scenario to measure reflecting material.
Utility model content
The purpose of the utility model embodiment is to provide a kind of detection means of reflecting material, with measurement reflex reflection
In the relevant parameter of material, the relevant parameter of reflecting material can accurately be measured, and improve measurement operation
Convenience.
To achieve these goals, the utility model embodiment provides a kind of detection means of reflecting material, including
Cylinder, detent mechanism, trigger mechanism, multiple receiving mechanisms and testing agency, the detent mechanism are arranged on the cylinder
Front end, the detent mechanism is used to position the method for launching light and reflecting material produced by the detection means of reflecting material
Incidence angle between line;The trigger mechanism is arranged on the rear of the detent mechanism, and the trigger mechanism is used for described inverse
Reflecting material projects transmitting light;The receiving mechanism is circumferentially positioned at the periphery of the trigger mechanism, the light of the receiving mechanism
Axle is parallel with the optical axis of the trigger mechanism, the reflected light for receiving the reflecting material;The testing agency with it is described
Receiving mechanism connect, the photometric parameter for detecting the reflected light that the reflecting material is reflected, the trigger mechanism and
The receiving mechanism uses the optical fiber in optical fiber structure, the trigger mechanism to be the light in launching fiber, the reception structure
Fibre is receives optical fiber, and the launching fiber and the reception optical fiber combination are into fibre bundle, and the launching fiber is located at the optical fiber
The center of beam, multiple diameters for receiving optical fiber are equal, are circumferentially positioned at the periphery of the launching fiber, the launching fiber
It is generally aligned in the same plane with the end face of the reception optical fiber.
Further, a diameter of D1 of the launching fiber, a diameter of D2 of the reception optical fiber, by the reflex reflection
After material is set onto the detent mechanism, the transmitting illumination projected from the launching fiber is mapped on the reflecting material
Point be test point, the distance between the end face center point of the launching fiber and test point on the reflecting material are L, in advance
The view angle first set meets equation below as α:Atctan α=(D1/2+D2/2)/L.
Further, the D1 is equal to D2.
Further, one end of the detent mechanism is connected with the front end of the cylinder, the other end of the detent mechanism
Inclined-plane is set to, the other end of the detent mechanism can be connected in the plane of the reflecting material.
Further, the trigger mechanism is arranged on the center of the cylinder, the trigger mechanism and the cylinder
It is concentric.
Further, the detent mechanism is hollow arc-shaped structure, and its one end is that can be connected to the reflex reflection
Planar structure in the plane of material, the other end is in circular arc, is provided with one end of the circular arc along the circular arc
Guide rail, the front end of the cylinder is connected with the guide rail, and can be slided along the guide rail.
Further, a diameter of D1 of the launching fiber, a diameter of D2 of the reception optical fiber, by the reflex reflection
After material is set onto the detent mechanism, the transmitting illumination projected from the launching fiber is mapped on the reflecting material
Point be test point, the distance between the end face center point of the launching fiber and circular arc one end of the detent mechanism are
The distance between test point is L2 on L1, circular arc one end of the detent mechanism and the reflecting material, set in advance
View angle is α, and meets equation below:Atctan α=(D1/2+D2/2)/(L1+L2).
Further, the D1 is equal to D2.
Further, circular arc one end of the detent mechanism is provided with scale, the detection for indicating reflecting material
Transmitting light produced by device and the incidence angle between the normal of reflecting material.
The detection means of the reflecting material of the utility model embodiment, by the way that launching fiber and reception optical fiber are integrated
Integrated detection means, is easy to testing staff to measure the relevant parameter of reflecting material, and limited by detent mechanism
Surely the incidence angle between transmitting light and the normal of reflecting material, and transmitting light is limited with receiving by the diameter of optical fiber
Angle between light, so as in the relevant parameter of measurement reflecting material, can enter to the relevant parameter of reflecting material
Row is accurately measured.In addition, using optical fiber structure is as fibre optical transmission and receives structure, adequately achieving the small-sized of detection device
Change, improve portability.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model
Art means, and being practiced according to the content of specification, and in order to allow above and other purpose of the present utility model, feature
It can be become apparent with advantage, below especially exemplified by embodiment of the present utility model.
Brief description of the drawings
Fig. 1 is one of structural representation of detection means that the utility model embodiment one is related to;
Fig. 2 is the two of the structural representation for the detection means that the utility model embodiment one is related to;
Fig. 3 is one of Cleaning Principle schematic diagram of detection means that the utility model embodiment one is related to;
Fig. 4 is the two of the Cleaning Principle schematic diagram for the detection means that the utility model embodiment one is related to;
Fig. 5 is the structural representation for the detection means that the utility model embodiment two is related to.
Drawing reference numeral explanation:
1- cylinders;11- detent mechanisms;12- trigger mechanisms;13- receiving mechanisms;14- testing agencies;2- reflecting materials.
Embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the disclosure in accompanying drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
Limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Complete conveys to those skilled in the art.
Traffic marking (mark, graticule and protuberant guide post etc.) is needed under night lights irradiation, it is easy to which ground is by driver
See, for example, road sign, vehicle shows that exterior feature etc. is indicated.Sign is typically what is be made up of reflecting material, and Ministry of Communications indicates to making
The standard of reflecting material provided (referring in particular to GBT 18833-2012 road traffics reflective membranes and GB 23254-
2009 lorries and trailer body reflecting marking), determine whether reflecting material meets standard regulation, can be by detecting reflex reflection
The photometric parameter of the reflected light of material, obtains the relevant parameter of reflecting material, to determine whether the reflecting material meets standard
Regulation.Wherein, the detection of reflecting material needs detecting instrument to simulate two measure geometry conditions, respectively view angle and incidence
Angle, wherein, incidence angle is the angle of optical fiber directive reflecting material, and view angle receives reflection light and incidence angle for human eye
Angle.Above-mentioned photometric parameter is specifically as follows one or more physical parameter in illumination, brightness and luminous intensity.
Embodiment one
Based on such demand, the utility model provides a kind of detection means of reflecting material, such as Fig. 1 and Fig. 2 institutes
Show, Fig. 1 is one of structural representation of detection means that the utility model embodiment one is related to, Fig. 2 is implemented for the utility model
The two of the structural representation for the detection means that example one is related to, it includes cylinder 1, detent mechanism 11, trigger mechanism 12, multiple receptions
Mechanism 13 and testing agency 14.Wherein here testing agency 14 can be the relevant parameter for detecting reflecting material 2
Testing agency.For example:Testing agency 14 can be instrument or the calculating for the relevant parameter that can detect reflecting material 2
Machine, can show the relevant parameter detected by it, consequently facilitating testing staff reads relevant information.
Trigger mechanism 12 is arranged on the rear of detent mechanism 11, and trigger mechanism 12, which is used to project to reflecting material 2, to be launched
Light.
In above-mentioned trigger mechanism, trigger mechanism 12 can be arranged on the center of cylinder 1, and trigger mechanism 12 can be with cylinder
Body 1 is concentric.The optical axis of trigger mechanism 12 can be with cylinder 1 centerline axis parallel, detection means 14 transmitting light light
Axle can be with detection means centerline axis parallel.
Receiving mechanism 13 is circumferentially positioned at the periphery of trigger mechanism 12, and receiving mechanism 13 can be abutted with trigger mechanism 12,
The optical axis of receiving mechanism 13 is parallel with the optical axis of trigger mechanism 12, and (the horizontal dotted line in Fig. 1 represents receiving mechanism and transmitting respectively
The optical axis of mechanism), the reflected light for receiving reflecting material 2.
Testing agency 14 is connected with receiving mechanism 13, for detecting that the luminosity for the reflected light that reflecting material 2 is reflected is joined
Number.It should be noted that testing agency here is specifically as follows CCD modules, it can detect that luminous exitance is joined by CCD modules
Number, so as to measure the light intensity reflection characteristic of reflecting material.
In practical application, for more comprehensive and accurate the characteristic for evaluating reflecting material, retro-reflecting coefficient R ' is introduced,
Retro-reflecting coefficient R ' is calculated by equation below:
R '=I/ (E⊥× A) ... ... ... ... ... ... ... ... ... formula (1)
In formula:R '-retro-reflecting coefficient, unit is candela per lux square metre (cd × lx-1×m-2);I-luminous
Intensity, unit is candela (cd);E⊥- vertical illumination, unit is lux (lx);The area of A-specimen surface, unit is
Square metre (m2).In above-mentioned formula, luminous intensity I and vertical illumination E⊥Can directly or indirectly it be surveyed by CCD modules
Amount is obtained, and for set-point, (detailed description of the formula is referred to GBT26377-2010 to the surface area A of reflecting material sample
Retroreflectometer).
Above-mentioned testing agency can also be specifically made up of CCD modules and computer, the calculating of above-mentioned retro-reflecting coefficient
Completed by the calculation procedure on computer.Wherein, the calculation procedure on computer can also have special hardware circuit real
Existing (such as DSP either FPGA or the computing circuit being made up of hardware circuits such as adder, multipliers), the output of CCD modules
Light intensity signal can be transferred to hardware circuit to carry out the calculating of retro-reflecting coefficient in the way of data signal or analog signal.
In addition, the testing agency 14 itself in the present embodiment can include display device, display device can show reflex reflection parameter.
In actual applications, typically reflecting material is examined and determine by the way of relative measurement.The application's is inverse
The detection means of reflecting material can be while the reflecting material on-gauge plate of matching standard, can set not for different applications
Same reflecting material on-gauge plate, the reflecting material on-gauge plate is the qualified reflecting material model of standard.Then survey respectively
The retro-reflecting coefficient of reflecting material on-gauge plate and the retro-reflecting coefficient for the reflecting material being tested are measured, is then compared, is come
Judge whether tested reflecting material is qualified.Or form of this proportionality coefficient by calibration is write in formula, this detection dress
The retro-reflecting coefficient of reflecting material can be directly displayed by putting.
Above-mentioned trigger mechanism 12 and receiving mechanism 13 can use the optical fiber in optical fiber structure, trigger mechanism 12 to be hair
Penetrate optical fiber, receive the optical fiber in structure 13 to receive optical fiber, launching fiber and receive optical fiber combination into fibre bundle, launching fiber
In the center of fibre bundle, the diameter of multiple reception optical fiber is equal, is circumferentially positioned at the periphery of launching fiber, receives optical fiber and transmitting
Optical fiber is abutted.Launching fiber and receive the end face of optical fiber and be generally aligned in the same plane so that transmitting light and the light of reflected light are away from equal, just
In the relevant parameter for calculating reflecting material 2.By set position relationship between trigger mechanism 12 and receiving mechanism 13 and
Position relationship between trigger mechanism 12 and receiving mechanism 13 and reflecting material 2 can reasonably set view angle α, common
View angle is 0.2 degree, 0.33 degree and 1 degree etc..
In above-mentioned trigger mechanism 12, cylinder 1 is ducted body, and optical fiber structure runs through cylinder 1, and optical fiber is used to transmit light, in cylinder
The rear end of body 1 can be provided with light source, and light source can be corresponding with launching fiber.
Detent mechanism 11 is arranged on the front end of cylinder 1, detent mechanism 11 be used to positioning reflecting material detection means (with
Lower abbreviation detection means) produced by transmitting light and reflecting material 2 normal between incident angle β.Such as the note in standard
Carry, conventional incident angle has -4 degree, 15 degree, 30 degree and 40 degree etc..
In above-mentioned detent mechanism, one end of detent mechanism 11 can be connected with the front end of cylinder 1, detent mechanism 11 it is another
End could be arranged to inclined-plane, and the other end of detent mechanism 11 can be connected in the plane of reflecting material 2.It is mentioned here fixed
Position mechanism 11 can be with the integrally formed mechanism of cylinder, for example directly can process an inclined-plane i.e. in the front end of cylinder 1
Can or one end bevelled hollow lid is set, can for example set in the middle part of inclined-plane, lid and set in one end of lid
Through hole is put, in order to printing opacity;The other end of lid sets buckle, and lid is connected to the front end of cylinder 1 by buckle.Certain lid
The other end with the front end of cylinder 1 can also be threadedly coupled.Wherein it is possible to according to inclination angle of the national standard to detent mechanism inclined-plane
Degree is processed setting (being referred to JJG059-2004 retroreflectometers measurement verification regulations).
The other end of detent mechanism 11 is inclined-plane, when detent mechanism 11 is connected in the plane of reflecting material 2 so that
The angle of inclination identical inclination angle with inclined-plane is formed between the normal of detection means and reflecting material 2, due to detection means
Transmitting light optical axis and the centerline axis parallel of detection means, therefore, transmitting light produced by detection means with it is converse
The incidence angle penetrated between the normal of material 2 is identical with the angle of inclination on inclined-plane.So as to realize that detent mechanism 11 enters to detection means
The positioning of firing angle.
The detection means of the reflecting material of the utility model embodiment, employs optical fiber as trigger mechanism and receiver
Structure and the structure that fibre bundle is formd by way of combination, so that stabilization can be formed between transmitting optical axis and reception optical axis
Closely structure, because optical fiber is very thin so that transmitting optical axis and receive can be very near between optical axis, so that in given observation
In the case of angle, it can fully reduce distance of the receiving mechanism apart from reflecting material, and then reduce the length of whole detection means
Degree.In addition, the reception optical fiber in the utility model is the surrounding for being circumferentially positioned at launching fiber, it can be received from multiple orientation
Reflection light, so that the problem of detection means need not consider to be positioned in a circumferential direction, in addition, circular setting etc.
Launching fiber can also be securely fixed in center by the reception optical fiber of diameter, receive and form stable between optical fiber and launching fiber
And firm location structure, so as to fully ensure that the stabilization of view angle.In addition, being looped around multiple receptions around launching fiber
Optical fiber can receive the reflected light of the reflecting material of multiple positions, so as to more comprehensively be surveyed to reflecting material
Amount.Therefore, the utility model is highly convenient for detection by the way that launching fiber and reception optical fiber are integrated into one into detection means
Personnel measure to the relevant parameter of reflecting material 2, and limit transmitting light and reflecting material 2 by detent mechanism 11
Normal between incidence angle, and transmitting light is limited by the diameter of optical fiber and the angle between light is received, thus
In the relevant parameter for measuring reflecting material 2, the relevant parameter of reflecting material 2 can accurately be measured.
The measuring principle of the utility model embodiment is further illustrated below by Fig. 3 and Fig. 4.Above-mentioned launching fiber with
And receive in optical fiber, as shown in Figure 3 and Figure 4, Fig. 3 is that the Cleaning Principle for the detection means that the utility model embodiment one is related to shows
One of it is intended to (arrow in Fig. 3 and Fig. 4 represents to launch the direction of light and reflection light respectively), the diameter of launching fiber can be with
For D1, the diameter for receiving optical fiber can be D2, after reflecting material 2 is set on detent mechanism, be penetrated from launching fiber
The point that the transmitting illumination gone out is mapped on reflecting material 2 is on test point, the end face center point and reflecting material 2 of launching fiber
The distance between test point is L, and view angle set in advance is α, and meets equation below:
Atctan α=(D1/2+D2/2)/L ... ... ... ... ... ... formula (2)
For the ease of diagram, d=D1/2+D2/2 will be set.It can be seen that from the formula, it is necessary to be realized by adjusting d and L
Given view angle, view angle is smaller, it is desirable to which d is smaller and/or L is bigger, therefore, in actually measurement, if using conventional
The trigger mechanism and receiving mechanism of optical lens structure, d typically will not very little, when carrying out the detection of small view angle, often
Cause the length of measurement apparatus larger, hinder the miniaturization of equipment.And in embodiment of the present utility model, dexterously utilize
Launching fiber and receive optical fiber composition fibre bundle structure, ensureing the premise of trigger mechanism and receiving mechanism precise positioning
Under, d numerical value has been dramatically reduced.Wherein, the diameter D1 of above-mentioned launching fiber can be equal to the diameter D2 for receiving optical fiber, with
It is easy to launching fiber and receives the installation and debugging of optical fiber, and the distribution of diameters is calculated.
When processing detection means of the present utility model, life can be processed according to the standard figures requirement of regulation
Production, for example, it is that 0.2 degree and incident angle β are -4 degree to preset view angle α, by the oblique surface machining of detent mechanism 11 into inclination
Angle be -4 degree inclined-planes, while can according to above formula calculate obtain the diameter of optical fiber and the end face center point of launching fiber with it is converse
Penetrate the distance between test point L on material 2.Wherein it is possible to make the diameter of optical fiber constant, the end face center point of launching fiber is adjusted
With the distance between test point L on reflecting material 2, it can also make on the end face center point and reflecting material 2 of launching fiber
The distance between test point L is constant, adjusts the diameter (for example change launching fiber or receive optical fiber) of optical fiber, in a word, finally
Numerical value be equal to atctan0.2.
When using detection means of the present utility model, the other end of the detent mechanism 11 of detection means is connected to be measured
In the plane of reflecting material 2, the light source of trigger mechanism 12 is opened, receiving mechanism 13 receives the anti-of the reflection of reflecting material 2
Light is penetrated, testing agency 14 is passed to, so as to measure the photometric parameter of transmitting light or directly calculate retro-reflecting coefficient, with right
Reflecting material is accurately examined and determine.
Embodiment two
As the another embodiment of detent mechanism 11, the utility model embodiment two provides the another of detent mechanism
Plant structure.
As shown in figure 5, detent mechanism 11 is hollow arc-shaped structure, its one end is that can be connected to reflecting material
Planar structure in plane, the other end is in circular arc, before circular arc is provided with guide rail, cylinder 1 in one end of circular arc
End is connected with guide rail, and can be slided along guide rail.
Wherein it is preferred to, guide rail is light transmissive material, and remainder can be light screening material, in order to detection means with it is inverse
Light between reflecting material 2 is propagated.In addition, circular arc one end of detent mechanism 11 can be provided with scale, it is inverse for indicating
Transmitting light produced by the detection means of reflecting material and the incidence angle between the normal of reflecting material.
The setting of detent mechanism 11 so that the incidence angle of detection means can be adjusted flexibly, compared with embodiment one, this
The detent mechanism 11 of embodiment can measure the detection data of more multigroup different incidence angles.
In the corresponding structures of Fig. 5, a diameter of D1 of launching fiber receives a diameter of D2 of optical fiber, by reflex reflection material
After material 2 is set onto detent mechanism 11, it is detection that the transmitting illumination projected from launching fiber, which is mapped to the point on reflecting material 2,
The distance between point, the end face center point of launching fiber and circular arc one end of detent mechanism 11 are L1, the circle of detent mechanism 11
The distance between test point is L2 on arc one end and reflecting material 2, and view angle set in advance is α, and meets following public affairs
Formula:
Atctan α=(D1/2+D2/2)/(L1+L2) ... ... ... ... formula (3)
Wherein, the diameter D1 of above-mentioned launching fiber can be equal to the diameter D2 for receiving optical fiber.
When actually detected, on the guide rail that the front end of cylinder 1 is installed to detent mechanism 11, according to scale adjustment detection dress
In the incidence angle put, the plane that the planar section of detent mechanism 11 is connected to reflecting material 2, the light of trigger mechanism 12 is opened
Source, receiving mechanism 13 receives the reflected light of the reflection of reflecting material 2, testing agency 14 is passed to, so as to measure transmitting light
Photometric parameter or directly calculate retro-reflecting coefficient, to carry out accurate calibrating to reflecting material.
Finally it should be noted that:Various embodiments above is only limited to illustrate the technical solution of the utility model, rather than to it
System;Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand:It can still modify to the technical scheme described in foregoing embodiments, or to which part or whole
Technical characteristic carries out equivalent substitution;And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.