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Traffic Signpost Measurement Module Spectrophotometer NS808

Traffic Signpost Measurement Module Spectrophotometer NS808

NS808 traffic spectrophotometer special built-in D65 / A / C / F2 and other light sources, the geometric light path structure is 45/0 (45 ° ring uniform illumination 0 ° reception), the instrument can easily test various reflective films Luminance factor, chromaticity coordinates, CI EL * a * b and other chromaticity data; in road traffic signpost testing, plastic electronics, paint and ink, textile and garment printing, printing paper, automotive, medical, cosmetics and food industries, in It is widely used in scientific research institutions and laboratories.
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  • product description
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In the relevant standards such as "GB 2893 Safety Color" and "GB / T 18833 Road Traffic Reflective Film", a color area (multiple chromaticity coordinate points) and brightness factor requirements are usually given. The D65 / A light source and 45 / Under 0 geometric conditions, it is determined whether the sample falls within the corresponding color area, thereby determining whether the sample meets the chromaticity requirements specified by the standard. Because the color area is a polygon, as shown in the figure below, it is impossible to complete the determination using an ordinary spectrophotometer. NS808 color measuring instrument and traffic sign measurement module of SQCT software can easily solve this problem.

I. Menu introduction and test preparation
NS808 traffic spectrophotometer special built-in D65 / A / C / F2 and other light sources, the geometric light path structure is 45/0 (45 ° ring uniform illumination 0 ° reception), the instrument can easily test various reflective films Luminance factor, chromaticity coordinates, CI EL * a * b and other chromaticity data; in road traffic signpost testing, plastic electronics, paint and ink, textile and garment printing, printing paper, automotive, medical, cosmetics and food industries, in It is widely used in scientific research institutions and laboratories.
1.1 Menu Introduction
The traffic sign test module of NS808 is mainly realized by the host computer software SQCT and NS808 instrument. Before use, you need to install the SQCT host computer software, then connect to the NS808 instrument, and then open the host computer software. The default is the common test interface, as shown in Figure 1. Under this interface, CIE L * a * b, XYZ, ΔE can be completed. * ab, ΔE * cmc, ΔE * 00 and other chromaticity data tests. For detailed menu and toolbar descriptions, please refer to the “Color Management Control Software Instruction Manual” that comes with this software. Here we will focus on the traffic sign test module.
figure 1
Click "Settings-> Traffic Signpost Measurement" to enter the traffic signpost test module, as shown in Figure 2. Click "Standard", as shown in Figures 3 and 4, there are "Add Standard", "Modify Standard", "Delete Standard", "Traffic Reflective Film GB / T 18833", "Safety Color GB2893", and "Custom" under this menu. Menu, these submenus are described in detail here.

figure 2

image 3

Figure 4
(1) Add standard In the traffic road sign test, the standard sample is usually a color area. We call it "polygon-tolerance standard sample", that is, input the color of each vertex (at least 3 points) of the color area in clockwise or counterclockwise order. The product coordinates, the software connects the vertices according to the input order to form a polygon-tolerance standard.
As shown in Figure 5, enter the standard name in position 1, select the type of light source at position 2 (the default is D65), select the observer angle at position 3 (the default is 2 degrees), and enter the brightness factor (except fluorescence) at position 4 Outside of matter, the brightness factor of ordinary reflection samples is greater than 0 and less than 1, that is, 0 <β <1). Enter the chromaticity coordinate point at position 5, and then click the "Add Vertex" button, the newly entered chromaticity coordinate point appears in the standard color gamut box, repeat the above steps, and input the chromaticity coordinate point in turn; for the wrongly entered color The coordinate point of the product is first selected in the standard color gamut box, and then the "delete vertex" button is clicked to delete the vertex. After all input is completed, click the "Add" button at position 8 to complete the "polygon-tolerance standard sample" creation.
As shown in Figures 5 and 6, create an "ABCD" polygon-tolerance standard called "green".
Note: When entering the vertices of each chromaticity coordinate, be sure to enter them in the clockwise or counterclockwise order of the color area graphics.

Figure 5

Figure 6
(2) Modify the standard as shown in Figure 7. Modify the polygon-tolerance standard named "green" created above. Select the standard first, and then you can modify the "standard name", "light source", "standard observer angle", " Luminance factor "and" chromaticity coordinates ", after modification, click" OK "button, the modification will take effect.

(3) Delete standard Select one or more standard samples in the standard sample area, and then click "Delete Standard" to delete the selected standard sample.
(4) Reflective film for road traffic GB / T 18833
For the domestic traffic signposts that use more standard GB / T 18833, SQCT software incorporates the standard color gamut in this standard, and customers only need to choose according to their needs.
Suppose we need the orange (daytime color) of the non-metallic coating type in the standard GB / T 18833 as the polygon-tolerance standard (corresponding to the sixth row of Table 8 in the standard GB / T 18833), we just need to click in turn "Standard sample-> road traffic reflective film GB / T 18833-> daytime color" is enough, as shown in Figures 8 and 9, S1 area shows the corresponding chromaticity coordinate point of orange, S2 area shows the corresponding polygon-tolerance Sample.
On the basis of "Road Traffic Reflective Film GB / T 18833", we can also choose a series of operations such as "Add Standard", "Modify Standard", "Delete Standard" and change the "Road Traffic Reflective Film GB / T 18833" to We need a polygon-tolerance standard.

Figure 8

Figure 9
(5) Safety color GB 2893 is a standard used in domestic traffic signs GB 2893. The SQCT software incorporates the standard color gamut in this standard. Customers only need to choose according to their needs. The method is the same as the menu "Road Traffic Reflective" Membrane GB / T 18 833 ”.
On the basis of "Safety Color GB 2893", we can also choose a series of operations such as "Add Standard", "Modify Standard" and "Delete Standard" to change "Safe Color GB 2893" to the polygon-tolerance standard we need. kind.
(6) Customized standards For the requirements of "road traffic reflective film GB / T 18833" and "safety color GB 2893", we can use "customized standards".
As shown in Figure 10, click "Standard Sample-> Custom Standard", and the standard sample display area is cleared. We create our own polygon tolerance standard sample through "Standard Sample-> Add Standard".

Figure 10
1.2 test preparation
(1) Install the SQCT host computer software correctly. Install the software according to the "Color Management Control Software User Manual" that comes with the SQCT software CD.
(2) Power on and power on the NS808 instrument. Power on and power on the instrument in accordance with the “Spectrophotometer Manual”.
(3) The NS808 starts communication from the menu button. The SQCT and NS808 communication is successfully connected to the computer via USB in accordance with the "Spectrophotometer Instruction Manual" to realize the communication between NS808 and SQCT.
(4) Perform white calibration and black barrel calibration on the instrument in sequence by SQCT. Perform white calibration and black calibration on the instrument in sequence in accordance with the "Color Management Control Software Instruction Manual" that comes with the SQCT software CD.
Technical specifications of spectrophotometer for NS808 traffic road signs
Product number NS808
Lighting method 45/0 (45 ring uniform illumination 0 ° reception);
Standards compliant CIE No.15, GB / T 3978, GB 2893, GB / T 18833
characteristic It is specially used for the measurement of the brightness factors and chromaticity coordinates of traffic signs, markings, reflective films. It includes GB 2893, GB / T 18833 standard colors, and you can manually customize the polygon and rectangular tolerances.
It can be used for color transmission and quality control in plastic electronics, paint and ink, textile and garment printing and dyeing, printing and other industries.
Integrating sphere size Φ58mm
Lighting source Combined LED light source
sensor Silicon photodiode
Measurement wavelength range 400 ~ 700nm
Wavelength interval 10nm
Reflectance measurement range 0 ~ 200%
Measuring caliber Φ8mm
Color space CIE LAB, XYZ, Yxy, LCh, CIE LUV
Color difference formula ΔE * ab, ΔE * uv, ΔE * 94, ΔE * cmc (2: 1), ΔE * cmc (1: 1), ΔE * 00
Other chromaticity indicators
WI (ASTM E313, CIE / ISO, AATCC, Hunter),
YI (ASTM D1925, ASTM 313),
Metamerism index Mt,
Color fastness, color fastness, strength, hiding
Observer angle 2 ° / 10 °
Observation light source D65, A, C, D50, D55, D75, F2, F6, F7, F8, F10, F11, F12
display Spectral graph / data, sample chromaticity value, color difference value / graph, pass / fail result, color bias, color simulation
measure time 1.5s
Repeatability Spectral reflectance: within 0.1% of standard deviation (400 ~ 700nm: within 0.2%):
Chroma value: within ΔE * ab 0.04 (after calibration, the average value of the whiteboard is measured 30 times at an interval of 5s)
Inter-platform difference Within ΔE * ab 0.2 (average of 12 BCRA series Ⅱ color plates)
size Length X width X height = 90X77X230mm
weight About 600g
battery power Lithium battery, 5000 times in 8 hours
Lighting source life More than 1.6 million measurements over 5 years
Display TFT true color 3.5inch, capacitive touch screen
interface
USB / TTL print serial port
Storing data 1,000 standard samples and 10,000 sample samples
Operating temperature range 0 ~ 40 ℃ (32 ~ 104 ° F)
Storage temperature range -20 ~ 50 ° C (-4 ~ 122 ° F)
Standard accessories Power adapter, lithium battery, manual, CD-ROM (including management software), data cable, black and white calibration tube, protective cover, wrist strap
Optional accessories Multifunctional test components (liquid, powder, granules, etc.), micro printers, powder test boxes
Note: Subject to change without notice

Data test
2.1 Test process Under the premise of test preparation (whiteboard and blackboard calibration is completed), a polygon-tolerance standard is usually established first, and then a sample test is performed to determine whether the sample falls within the polygon-tolerance , Print the test data of the sample or export the test data of the sample, and save the test data for next call.
2.2 Determine whether the sample's chromaticity data meets the polygon-tolerance standard example. For example, how to determine whether the blue sample is within the blue area specified in "GB / T 18833-2012 Road Traffic Reflective Film Sample" (no metal coating, Daytime reflective film color), follow the steps below to complete the measurement and judgment in order.
(1) Create a polygon-tolerance standard
SQCT directly puts the polygon color area of "GB / T 18833-2012 Road Traffic Reflective Film Sample" into the software, you can directly select from the menu, "Standard Sample-> Road Traffic Reflective Film GB / T 18833-> Daytime Color (No metal coating) "is shown in Figure 11.
Double-click the blue color of the standard sample area, as shown in Figure 12 as S3, so that blue is the current standard sample, and the blue polygon-tolerance standard sample (specified in "GB / T 18833-2012 Road Traffic Reflective Film Sample") The blue area) is displayed in the S4 section.

Figure 11

Figure 12
(2) Sample test with NS808 Place the test sample on the measuring caliber of NS808, hold it tightly, and click the sample test shortcut tool with the mouse, as shown in Figure 13. The test was completed in about 1.5 seconds. The test data is shown in S5 in FIG. 13. The position in the chromaticity diagram is shown in S7. The simulation and judgment results are shown in S6.
At the same time, you can rename and delete the test sample through "Sample-> Rename / Delete".

Figure 13

Figure 14
(3) Sample test data processing The test result of the sample can be generated through the print menu. Select the sample and standard to be printed, and execute "Report-> Color Difference-> Print / Print to Word" or "Report- > Color Difference Accumulation-> Print / Print to Word "to print the test results, as shown in Figures 15 and 16.
At the same time, the test results can be exported in the form of EXCEL. Select the samples and standards to be printed, execute "File-> Export Data", export the test results in csv format, and then open it with EXCEL and other data processing. , As shown in Figure 17.

Figure 15

Figure 16

Figure 17
(4) Save the test data For the test results, you can save the current measurement data and configuration file in the form of engineering, so as to facilitate later recall.
Execute “File-Save / Save As>”, the test data and configuration file will be saved as “*. Job” for later recall, as shown in Figure 18.

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