CN210803347U - Detection device for measuring shading degree of coating - Google Patents
Detection device for measuring shading degree of coating Download PDFInfo
- Publication number
- CN210803347U CN210803347U CN201921532294.7U CN201921532294U CN210803347U CN 210803347 U CN210803347 U CN 210803347U CN 201921532294 U CN201921532294 U CN 201921532294U CN 210803347 U CN210803347 U CN 210803347U
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- quartz glass
- ultraviolet
- measuring
- coating
- degree
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Abstract
The utility model discloses a detection apparatus for be used for measuring coating shading degree, including voltage source, ampere meter, UVB emission source, quartz glass piece and ultraviolet photo resistance set up in the seal box, voltage source, ultraviolet photo resistance and ampere meter link to each other, UVB emission source, quartz glass piece and ultraviolet photo resistance are located same straight line. The utility model is used for measuring detection device of coating shading degree evenly paints sun block on quartz glass piece, judges the sun block's of shading of this sun block degree through the current value of measuring in the circuit behind the change of ultraviolet photoresistor resistance. The device is simple in structure and convenient to install, adopts an instrument to replace a person to carry out a coating shading degree experiment, obtains relatively authoritative sun-proof capability numerical values without being interfered by various external factors, eliminates hidden dangers of various variables, and enables the detection and analysis processes to be more convenient and faster.
Description
Technical Field
The utility model belongs to the technical field of detection device, concretely relates to a detection device for be used for measuring coating shading degree.
Background
The sunscreen cream is a skin care product commonly used by people at present, the sunscreen cream on the market is not uniform, the phenomenon of false shading exists in the given sunscreen capacity index, and the real sunscreen capacity of the sunscreen cream cannot be distinguished by naked eyes, so the sunscreen capacity of the sunscreen cream needs to be detected by an instrument.
The sun protection factor refers to an SPF (specific pathogen free) sun protection factor, and is a detection index for measuring the defense capability of the sun protection product against ultraviolet UVB (ultraviolet B) in sunlight, and shows that the sun protection product can exert the sun protection effect. The sun-screening product can effectively resist the damage of ultraviolet rays to the skin, and the SPF value marked on the sun-screening product is the protection index provided by the sun-screening product. The protection time of the sunscreen can be obtained by multiplying the required time by the value of SPF, which is determined according to the lowest erythema dose of the skin. The calculation method comprises the following steps: assuming that the intensity of the uv light does not change over time, a person without any sun protection means will have a red skin after 20 minutes in the sun, which means that the skin will be reddened after 300 minutes, when he uses a sun protection product of SPF 15.
At present, there are many methods for detecting the sun protection degree, for example: the patent (CN106846422A) discloses a method for identifying skin sunscreen condition, which includes obtaining a white light image and a purple light image of a skin to be detected, and classifying the skin color of the skin to be detected through the white light image of the skin to be detected to obtain the skin color grade of the skin to be detected, but the patent uses a real person to perform an experiment, which does not meet the current experiment requirements, and the skin condition of each person is different, so that the sunscreen capability of sunscreen cream cannot be strictly and accurately measured; patent (CN204758476U) discloses a device for rapidly sensing performance of sunscreen cream, which directly paints a sunscreen cream sample to be tested between a first protrusion and a second protrusion of an ultraviolet photochromic layer, and has the problems of difficult cleaning and easy environmental impact.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a detection device for measuring coating shading degree has solved current detection device and the experimental body and has easily received the problem that external environment influences lead to measurement accuracy is not high.
The utility model adopts the technical proposal that: a detection device for measuring the shading degree of a coating comprises a voltage source, an ammeter, a UVB emission source, a quartz glass sheet and an ultraviolet photoresistor, wherein the UVB emission source, the quartz glass sheet and the ultraviolet photoresistor are arranged in a closed box, the voltage source, the ultraviolet photoresistor and the ammeter are connected, and the UVB emission source, the quartz glass sheet and the ultraviolet photoresistor are located on the same straight line.
The utility model is also characterized in that,
and a protective resistor is connected between the voltage source and the ammeter and is connected with the ultraviolet photosensitive resistor in parallel.
The protection resistor is an adjustable resistor.
The UVB emission source, the quartz glass sheet and the ultraviolet photoresistor are positioned on the same vertical line.
The closed box is of a drawer type structure.
The utility model has the advantages that: the utility model is used for measuring detection device of coating shading degree evenly paints sun block on quartz glass piece, judges the sun block's of shading of this sun block degree through the current value of measuring in the circuit behind the change of ultraviolet photoresistor resistance. The device is simple in structure and convenient to install, adopts an instrument to replace a person to carry out a coating shading degree experiment, obtains relatively authoritative sun-proof capability numerical values without being interfered by various external factors, eliminates hidden dangers of various variables, and enables the detection and analysis processes to be more convenient and faster.
Drawings
FIG. 1 is a schematic structural diagram of a detection device for measuring the shading degree of a coating according to the present invention;
fig. 2 is a circuit diagram of the detection device for measuring the shading degree of the coating.
In the figure, 1, a voltage source, 2, a UVB emission source, 3, a quartz glass sheet, 4, a closed box, 5, a lead through hole, 6, an ammeter, 7, a circuit board, 8, a drawer handle, 9, a circuit board bracket, 10, an ultraviolet photoresistor and 11, a protective resistor are arranged.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model provides a detection apparatus for be used for measuring coating shading degree, its structure is as shown in figure 1, including voltage source 1, ampere meter 6, UVB emission 2, quartz glass piece 3 and circuit board 7, be provided with ultraviolet photo resistance 10 on the circuit board 7, UVB emission 2, quartz glass piece 3 and circuit board 7 set up in an airtight box 4, and ultraviolet photo resistance 10 on UVB emission 2, quartz glass piece 3 and the circuit board 7 is located same straight line, and voltage source 1, circuit board 7 and ampere meter 6 link to each other.
The circuit board 7 is fixed on the bottom plate of the closed box 4 through a circuit board bracket 9, and the quartz glass sheet 3 and the UVB emission source are also respectively fixed in the closed box 4 through fixing brackets.
Preferably, the UVB emission source 2, the quartz glass plate 3, and the ultraviolet photoresistor 10 are located on the same vertical line.
The device for bearing the quartz glass sheet 3 of the sunscreen cream adopts a quartz glass sheet with the thickness of 1mm, the sunscreen cream is uniformly smeared on the quartz glass sheet, and the surface of the quartz glass sheet is a regular quadrangle, so that the experiment is convenient. Variables can be controlled only by smearing the sunscreen cream, the common glass has an isolation effect on ultraviolet rays emitted by the UVB emission source 2, and the quartz glass cannot block penetration of the UVB.
Further, referring to fig. 2, a protection resistor 11 connected in parallel with the ultraviolet light sensitive resistor 10 is further disposed on the circuit board 7, and the protection resistor 11 is also connected between the voltage source 1 and the ammeter 6. Preferably, the protection resistor 11 is a resistor with an adjustable resistance.
Furthermore, the external connection of the circuit board 7 is realized by a binding post which is fixed on the side wall of the closed box 4 and is convenient to be connected with the voltage source 1 and the ammeter 6.
Illustratively, the sealing box 4 may be a drawer type structure, so as to facilitate installation of the circuit board 7 and other components, a drawer handle 8 is connected to the outside of the drawer through a bolt, and a sliding groove is formed below the drawer, and the opening and closing are realized through the sliding groove.
When the ammeter is used, the ammeter 6 is calibrated after the power supply is switched on, and the pointer of the ammeter is aligned to the zero scale mark. The quartz glass plate 3 is wiped clean. The sun cream is uniformly coated on the quartz glass sheet 3, the quartz glass sheet 3 coated with the sun cream is placed right above the ultraviolet light-sensitive resistor 10, and the UVB emission source 2, the quartz glass sheet 3 bearing the sun cream and the ultraviolet light-sensitive resistor 10 are on the same vertical line, so that ultraviolet light can be uniformly irradiated, and the accuracy of a detection result is ensured.
Since the ultraviolet light dependent resistor 10 is sensitive to ultraviolet light, the utility model discloses it is used for detecting ultraviolet intensity. The ultraviolet photoresistor 10 changes along with the change of ultraviolet UVB intensity, and the resistance is reduced due to the ultraviolet light intensity; the ultraviolet light is weak and the resistance increases. With the change of the resistance value of the ultraviolet photoresistor 10, the sun protection capability of the sun protection cream is judged by checking the indication change of the ammeter 6 outside the closed box 4, and the reading of the ammeter at different moments is recorded, so that the sun protection capability of the sun protection cream under the ultraviolet irradiation of different time lengths can be obtained. And repeatedly measuring the sun-screening creams with different specifications to obtain the sun-screening capabilities of different sun-screening creams.
Claims (5)
1. The detection device for measuring the shading degree of the coating is characterized by comprising a voltage source, an ammeter, a UVB emission source, a quartz glass sheet and an ultraviolet photoresistor, wherein the UVB emission source, the quartz glass sheet and the ultraviolet photoresistor are arranged in a closed box, the voltage source, the ultraviolet photoresistor and the ammeter are connected, and the UVB emission source, the quartz glass sheet and the ultraviolet photoresistor are located on the same straight line.
2. The detecting device for measuring the shading degree of the coating according to claim 1, wherein a protective resistor is further connected between the voltage source and the ammeter, and the protective resistor is connected with the ultraviolet photosensitive resistor in parallel.
3. The detecting device for measuring the degree of shading of the coating according to claim 2, wherein the protective resistor is an adjustable resistor.
4. The apparatus according to claim 1, wherein the UVB emission source, the quartz glass plate, and the uv photoresistor are positioned on a same vertical line.
5. The apparatus for measuring the degree of opacity of a coating as defined in claim 1, wherein the enclosure is a drawer-type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921532294.7U CN210803347U (en) | 2019-09-16 | 2019-09-16 | Detection device for measuring shading degree of coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921532294.7U CN210803347U (en) | 2019-09-16 | 2019-09-16 | Detection device for measuring shading degree of coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210803347U true CN210803347U (en) | 2020-06-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921532294.7U Expired - Fee Related CN210803347U (en) | 2019-09-16 | 2019-09-16 | Detection device for measuring shading degree of coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210803347U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113945277A (en) * | 2021-12-07 | 2022-01-18 | 四川大学 | Ultraviolet radiation dose detection system based on photochromic intelligent hydrogel and quantitative detection method of ultraviolet radiation dose in environment |
-
2019
- 2019-09-16 CN CN201921532294.7U patent/CN210803347U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113945277A (en) * | 2021-12-07 | 2022-01-18 | 四川大学 | Ultraviolet radiation dose detection system based on photochromic intelligent hydrogel and quantitative detection method of ultraviolet radiation dose in environment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200619 Termination date: 20210916 |