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A retroreflective mark measuring instrument

A measuring instrument and retro-reflection technology, applied in the field of retro-reflection sign measuring instruments, can solve the problems of limited moving space, large size of the light detector, and great influence of the detector, and achieve the effects of stable position, convenient and simple operation, and accurate measurement.

Active Publication Date: 2019-01-22
BEIJING ZHONGJIAO ENG INSTR INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of setting can not carry out multi-angle measurement, because the focus positions of different angles are too close, and the light detectors are too large to be arranged in sequence; if the focus is separated by multiple reflections, the light intensity of the light source is not enough, which will have a great impact on the detector; if Move the position of the photodetector when performing multi-angle measurement. The photodetector is large in size, has limited moving space, and is installed inside the optical dark box, so it is inconvenient to adjust the position of the photodetector.

Method used

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  • A retroreflective mark measuring instrument
  • A retroreflective mark measuring instrument
  • A retroreflective mark measuring instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1: a kind of retroreflection mark measuring instrument, such as figure 2 and image 3 As shown, it includes an optical dark box 1 and a light source, and the light source is arranged in the optical dark box 1 .

[0036] The surface of the optical dark box 1 is provided with an opening, and a sample made of a retroreflective material is placed in the opening, and the opening is blocked by the sample. The optical dark box 1 is fixedly connected with a plurality of optical fibers 4 for extracting the light reflected by the sample, each optical fiber 4 corresponds to an observation angle and each optical fiber 4 is connected with a photodetector for detecting the light extracted by the optical fiber 4 .

[0037] When testing the sample, the sample reflects the light emitted by the light source to the optical fiber 4 in the adjustment groove 9, and the optical fiber 4 draws the reflected light out, projects it to the corresponding detector, and detects it throug...

Embodiment 2

[0039] Embodiment 2: as figure 1 As shown, when there is only one optical fiber 4, the fixing assembly 5 can be opened, the optical fiber 4 in the adjustment groove 9 can be fine-tuned, adjusted to the required observation angle, and then the optical fiber 4 can be fixed by the fixing assembly 5, so that different observation The angle eliminates the need to adjust the position of the photodetector. The optical fiber 4 is relatively thin, and the required adjustment space is small, and the range of each adjustment of the placement angle of the sample is small, and the reflected light is relatively close. Using the optical fiber 4 to lead out can make the emitted light projected onto the photodetector more accurately , to ensure more accurate measurement.

Embodiment 3

[0040] Embodiment 3: a kind of clamp assembly 5, such as image 3 As shown, a left clamping plate 51 and a right clamping plate 52 are included, and a strip-shaped clamping groove 6 is formed between the left clamping plate 51 and the right clamping plate 52 .

[0041] A side of the left clamping plate 51 away from the clamping groove 6 and a side of the right clamping plate 52 away from the clamping groove 6 both extend outward to form a fixing plate 54 with a fixing hole 541 . The width of left clamping plate 51 and right clamping plate 52 itself is not wide, and fixing hole 541 is inconveniently arranged, and fixing plate 54 is positioned at the middle part of left clamping plate 51 and right clamping plate 52 respectively, and the length of fixing plate 54 Smaller than the width of the left clamping plate 51 and the right clamping plate 52 , the overall orthographic projection is roughly T-shaped, and the diameter of the fixing hole 541 is basically the same as the length ...

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PUM

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Abstract

The invention discloses a retroreflective sign measurer.A technical scheme thereof is characterized by including an optical dark box and a light source, the light source is disposed in the optical dark box, the surface of the optical dark box is provided with an opening, a sample for covering the opening is disposed at the opening, the optical dark box is provided with an adjusting slot, an optical fiber for introducing out light reflected by the sample is disposed in the adjusting slot, the optical fiber is connected with a light detector for detecting the light introduced out by the optical fiber, a fixing component is disposed at the adjusting slot, and the optical fiber is fixedly connected with the optical dark box through the fixing component; multi-angle measurement is facilitated.

Description

technical field [0001] The invention relates to the technical field of road traffic safety, in particular to a retroreflective marker measuring instrument. Background technique [0002] The retroreflective sign measuring instrument, also known as the traffic sign retroreflective coefficient measuring (fixed) instrument, is a special instrument used to measure the retroreflective coefficient (R') of traffic sign materials. The instrument meets the standards of GB / T 26377-2010 "Retroreflective Measuring Instrument", GB / T16311-2009 "Quality Requirements and Testing Methods for Road Traffic Markings", JJG (Traffic) 059-2004 "Verification Regulations for Retroreflective Measuring Instruments" and other standards Require. [0003] Retroreflection is an optical phenomenon in which the reflected light returns to the light source in the opposite direction to the incident light. Retroreflective materials are manufactured based on the above principles and are widely used in the field...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/47
CPCG01N21/4738G01N2021/4735G01N2021/4742
Inventor 杨宗文
Owner BEIJING ZHONGJIAO ENG INSTR INST
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