Mobile retroreflection coefficient tester
阅读说明：本技术 一种移动式逆反射系数测试仪 (Mobile retroreflection coefficient tester ) 是由 回天 罗浩 于 2019-10-17 设计创作，主要内容包括：本发明公开了一种移动式逆反射系数测试仪,包括壳体,所述壳体内设有一个同于检测逆反射系数的检测装置,所述壳体的内顶端水平设有螺杆,所述螺杆与检测装置顶部转动连接的螺母螺纹连接,所述螺母连接有微型直流伺服电机；所述检测装置包括光源、半反射镜、凸透镜、第一全反射镜、第二全反射镜、光线检测元件以及至少一个光源吸收元件。本发明通过设置一个较长的壳体,从而可增大取样点,便于对逆反射材料表面进行全面的分析,同时在壳体内辅以丝杆、螺母并通过电机驱动,从而实现检测装置的水平位移,从而实现对较长的一端材料进行检测,提高了检测效率,且使得最终测得的逆反射系数更加可靠。(The invention discloses a movable retroreflection coefficient tester, which comprises a shell, wherein a detection device for detecting retroreflection coefficients is arranged in the shell, a screw rod is horizontally arranged at the inner top end of the shell, the screw rod is in threaded connection with a nut in rotary connection with the top of the detection device, and the nut is connected with a miniature direct current servo motor; the detection device comprises a light source, a half-reflecting mirror, a convex lens, a first total reflecting mirror, a second total reflecting mirror, a light ray detection element and at least one light source absorption element. According to the invention, the longer shell is arranged, so that sampling points can be increased, the surface of the retro-reflection material can be conveniently and comprehensively analyzed, and meanwhile, the lead screw and the nut are assisted in the shell and are driven by the motor, so that the horizontal displacement of the detection device is realized, the detection of the material at the longer end is realized, the detection efficiency is improved, and the finally detected retro-reflection coefficient is more reliable.)
1. A movable retroreflection coefficient tester comprises a shell (1) and is characterized in that a detection device (3) which is used for detecting retroreflection coefficients is arranged in the shell (1), a screw rod (43) is horizontally arranged at the top end of the inner side of the shell (1), the screw rod (43) is in threaded connection with a nut (42) which is rotatably connected with the top of the detection device (3), and the nut (42) is connected with a micro direct current servo motor (4);
the detection device (3) comprises a light source (31), a half mirror (32), a convex lens (34), a first full mirror (35), a second full mirror (36), a light ray detection element (5) and at least one light source absorption element (33), wherein the light source (31) and the light source absorption element (33) are symmetrically arranged, the half mirror (32) is positioned between the light source (31) and the light source absorption element (33), one part of light rays of the light source (31) penetrate through the half mirror (32) and are received by the light source absorption element (33), the other part of light rays of the light source (31) are reflected by the half mirror (32), the convex lens (34) is arranged at a main optical axis reflected by the half mirror (32), the light rays reflected by the half mirror (32) are converged by the convex lens (34), and the light converged by the convex lens (34) irradiates to the first full mirror (35) which is obliquely arranged, the first total reflector (35) reflects light to irradiate a second total reflector (36) which is obliquely arranged.
The light ray detection element (5) is arranged on one side of the half mirror (32) opposite to the convex lens (34).
2. The mobile retroreflective factor tester of claim 1 wherein both ends of the threaded rod (43) are rotatably connected to the inner wall of the housing (1) by deep groove ball bearings.
3. The mobile retroreflective factor tester of claim 1, wherein the nut (42) is coupled with a driven gear in an interference fit manner, the output shaft of the miniature DC servo motor (4) is coupled with a driving gear (41) in an interference fit manner, and the driving gear (41) is meshed with the driven gear.
4. The mobile retroreflective factor tester of claim 1 wherein the first total reflector (35) is disposed at 45 ° to the primary optical axis of the convex lens.
5. The mobile retroreflective factor tester of claim 4, wherein the second total reflector (36) is disposed at an angle of 45 ° with respect to the primary optical axis of the reflection of the first total reflector (35).
6. The mobile retroreflective factor tester of claim 1 wherein the light absorbing element (5) comprises at least one of a photoelectric receiving element, an amplifying element, a digital-to-analog converter and a single-chip microcomputer.
7. The mobile retroreflection coefficient tester of claim 6, wherein a display screen is mounted on the foreign currency of the housing (1), and the display screen is electrically connected with the single chip microcomputer.
8. The portable retroreflective factor tester of claim 6 wherein the photoreceiving element comprises a photodiode and the amplifying element comprises a transistor.
9. The mobile retroreflective factor tester of claim 1 wherein the bottom end of the housing (1) is surrounded by an integrally formed flange (2) and the bottom end of the baffle (2) is glued with a rubber pad.
Technical Field
The invention relates to the technical field of retroreflection coefficient testing, in particular to a movable retroreflection coefficient tester.
Background
Currently, retroreflective materials are increasingly used in the traffic industry. In particular, retroreflective materials are used in traffic safety applications such as traffic signs, raised pavement markings, and the like. The acceptability of retroreflective materials becomes a critical factor affecting engineering quality. Therefore, proper and effective evaluation and acceptance of retroreflective materials and facilities is particularly important.
Retroreflectivity is a key technical indicator of retroreflective materials, and measuring the coefficient of retroreflection of retroreflective materials is the most straightforward and effective way to assess their retroreflectivity. However, the conventional retroreflection coefficient testing apparatus usually adopts a fixed-point sampling method to perform the testing, i.e. the sampling point is small, and the sampling point needs to be increased due to the larger surface area of the retroreflection material, which is inconvenient to use.
Disclosure of Invention
The invention aims to solve the problem that a retroreflection coefficient testing instrument in the prior art usually adopts a fixed-point sampling mode for testing, namely a sampling point is small, and the retroreflection material with a large surface area needs to be added with the sampling point, so that the retroreflection coefficient testing instrument is inconvenient to use.
In order to achieve the purpose, the invention adopts the following technical scheme:
a movable retroreflection coefficient tester comprises a shell, wherein a detection device for detecting retroreflection coefficients is arranged in the shell, a screw rod is horizontally arranged at the inner top end of the shell, the screw rod is in threaded connection with a nut which is rotatably connected with the top of the detection device, and the nut is connected with a miniature direct current servo motor;
the detection device comprises a light source, a half mirror, a convex lens, a first total reflector, a second total reflector, a light ray detection element and at least one light source absorption element, wherein the light source and the light source absorption element are symmetrically arranged, the half mirror is positioned between the light source and the light source absorption element, one part of light rays of the light source penetrate through the half mirror and are received by the light source absorption element, the other part of light rays of the light source are reflected by the half mirror, a convex lens is arranged at the position of a main optical axis reflected by the half mirror, the light rays reflected by the half mirror are converged by the convex lens, the light rays converged by the convex lens are irradiated to the first total reflector arranged in an inclined mode, and the light rays reflected by the first total reflector are irradiated to the second total reflector arranged.
The light ray detection element is arranged on one side of the half-reflecting mirror opposite to the convex lens.
Preferably, both ends of the screw rod are rotatably connected to the inner wall of the shell through deep groove ball bearings.
Preferably, the nut is connected with a driven gear in an interference fit manner, an output shaft of the miniature direct current servo motor is connected with a driving gear in an interference fit manner, and the driving gear is meshed with the driven gear.
Preferably, the first total reflecting mirror and the main optical axis of the convex lens are arranged at an angle of 45 degrees.
Preferably, the second total reflector and the main optical axis reflected by the first total reflector are arranged at 45 degrees.
Preferably, the light absorption element includes at least one photoelectric receiving element, an amplifying element, a digital-to-analog converter and a single chip microcomputer.
Preferably, a display screen is installed on the foreign currency of the shell and electrically connected with the single chip microcomputer.
Preferably, the photoreceiving element is a photodiode, and the amplifying element is a transistor.
Preferably, the bottom end of the shell is surrounded by an integrally formed flange, and the bottom end of the baffle is glued with a rubber pad.
Compared with the prior art, the invention has the following advantages:
according to the invention, the longer shell is arranged, so that sampling points can be increased, the surface of the retro-reflection material can be conveniently and comprehensively analyzed, and meanwhile, the lead screw and the nut are assisted in the shell and are driven by the motor, so that the horizontal displacement of the detection device is realized, the detection of the material at the longer end is realized, the detection efficiency is improved, and the finally detected retro-reflection coefficient is more reliable.
Drawings
FIG. 1 is a schematic view of a mobile retroreflective factor tester according to the present invention;
fig. 2 is a schematic view of an internal structure of a detecting device of a mobile retroreflection coefficient tester according to the present invention.
In the figure: the device comprises a shell 1, a baffle 2, a detection device 3, a light source 31, a
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-2, a mobile retroreflection coefficient tester comprises a shell 1, a detection device 3 for detecting retroreflection coefficient is arranged in the shell 1, a screw 43 is horizontally arranged at the inner top end of the shell 1, the screw 43 is in threaded connection with a nut 42 rotatably connected with the top of the detection device 3, and the nut 42 is connected with a miniature direct current servo motor 4;
the detection device 3 includes a light source 31, a
The light ray detection element 5 is disposed on the side of the
Further, both ends of the screw 43 are rotatably connected to the inner wall of the housing 1 through deep groove ball bearings, and the deep groove ball bearings are arranged to support and fix, so that the screw 43 can only rotate.
Furthermore, a driven gear is connected to the nut 42 in an interference fit manner, a driving gear 41 is connected to an output shaft of the miniature direct current servo motor 4 in an interference fit manner, the driving gear 41 is meshed with the driven gear, and gear meshing transmission is accurate and stable.
Referring to the body 2, the first
The light absorption element 5 comprises at least one photoelectric receiving element, an amplifying element, a digital-to-analog converter and a single chip microcomputer, a display screen is mounted on a foreign currency of the shell 1 and electrically connected with the single chip microcomputer, the photoelectric receiving element adopts a photodiode, the amplifying element adopts a transistor, the bottom end of the shell 1 is surrounded by the integrally formed flange 2, and a rubber pad is glued to the bottom end of the baffle 2.
When the device is used, the light source 41 is turned on, light rays emitted by the light source 41 irradiate on the
The photodiode converts an optical signal into a weak electrical signal, the transistor amplifies the weak electrical signal, the analog-to-digital converter converts the signal into a digital signal and transmits the digital signal to the singlechip for data processing, and the singlechip outputs a signal to the display screen for display.
In addition, the miniature direct current servo motor 4 can be opened during detection, so that the moment is transmitted to the nut 42 through the meshing action of the driving gear and the driven gear, and the nut 42 horizontally moves on the screw 43 after rotating, so that movable measurement can be carried out.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.