CN201637670U - Reflection-type color densitometer - Google Patents
Reflection-type color densitometer Download PDFInfo
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- CN201637670U CN201637670U CN 201020166893 CN201020166893U CN201637670U CN 201637670 U CN201637670 U CN 201637670U CN 201020166893 CN201020166893 CN 201020166893 CN 201020166893 U CN201020166893 U CN 201020166893U CN 201637670 U CN201637670 U CN 201637670U
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- measuring
- led light
- control circuit
- measuring chamber
- light source
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Abstract
The utility model discloses a photoelectrical measuring instrument, particularly relates to a reflection-type color densitometer which comprises a measuring chamber, a control circuit board, three LED light sources which respectively are red, green and blue and a measuring sensor. The measuring chamber comprises a measuring chamber main body on which a measuring light through-hole, a light outlet and an installation cavity of the measuring sensor are arranged. The light outlet is arranged on one end of the measuring light through-hole, the installation cavity of the measuring sensor is arranged on the other end of the measuring light through-hole. Three LED light source installation holes are further arranged on the measuring chamber main body and each LED light source installation hole is communicated with the light outlet. The measuring sensor is installed in the installation cavity of the measuring sensor and the pins of the measuring sensor are electrically connected with the control circuit board. An LED light source is correspondingly installed in every LED light source installation hole and the pins of the LED light sources are electrically connected with the control circuit board. The utility model has the advantages of stable measuring result.
Description
Technical field
The utility model relates to a kind of photoelectric measurement instrument, relates in particular to a kind of reflection type color densitometer.
Background technology
Densitometer is an optical instrument of measuring optical density (OD), and optical density (OD) then is the tolerance of body surface transmissivity or reflectivity.The quality testing and the control of industries such as densitometer is widely used in printing, photography, color TV, weaving.Densitometer can be divided into reflection densitometer (measuring nontransparent reflected by objects light) and transmission density meter (measuring the transmitted light of transparent substance) generally; Color by measuring light can be divided into black and white densitometer and color densitometer again.Existing reflection type color densitometer adopts incandescent lamp as light source usually, the light that above-mentioned incandescent light source is sent is after the testee surface reflection, respectively red, green, blue three parts of light are separated by three color filters, measure the light intensity of testee surface by survey sensor and control circuit again, calculate the color distribution on testee surface three kinds of compositions of red, green, blue.Above-mentioned reflection type color densitometer has adopted single light source color separation measuring technique, and wherein incandescent light source is along with its brightness meeting decay of variation of time; The red, green, blue color filter is aging easily; Not sealing on the structure.These three factors make the measurement result instability.
The utility model content
Technical problem to be solved in the utility model provides a kind of reflection type color densitometer that obtains the stably measured result.
The utility model comprises measuring chamber, control circuit board, three led light sources of red, green, blue and survey sensor; Described measuring chamber comprises a measuring chamber body, is provided with one and measures light hole, light-emitting window and survey sensor installation cavity on above-mentioned measuring chamber body; Described light-emitting window is arranged in an end of measuring light hole, and the survey sensor installation cavity is arranged in the other end of measuring light hole; Three led light source mounting holes also are set on the described measuring chamber body, and above-mentioned each led light source mounting hole all is interconnected with light-emitting window; Described survey sensor is installed in above-mentioned survey sensor installation cavity, and the pin of described survey sensor is connected electrically on the control circuit board; The corresponding led light source of installing in above-mentioned each led light source mounting hole, the pin of above-mentioned led light source is connected electrically on the control circuit board.
During reflection type color densimeter measurement of the present utility model, light-emitting window is aimed at measured object, after the energized, control red, green, blue three-color LED light source luminescent successively by the single-chip microcomputer in the control circuit that carries on the control circuit board, red, green, blue three coloured light arrive the measured object surface by light-emitting window successively.Light-emitting window is passed through to the reflected light of red, green, blue three coloured light in the measured object surface, enters to measure light hole and arrive the survey sensor installation cavity.The survey sensor that is arranged in the survey sensor installation cavity is measured the reflected light of measured object surface to red, green, blue three coloured light, and the light intensity of above-mentioned red, green, blue three coloured light is converted to the pulse signal of variable frequency.The pulse signal of above-mentioned variable frequency passes to the single-chip microcomputer in the control circuit, calculates light intensity by single-chip microcomputer, thereby draws the color distribution of measured object.Above-mentioned single-chip microcomputer has USB interface, is convenient to be connected with host computer.The structure that adds color filter with traditional white light source is compared, and the reflection type color densitometer in the utility model adopts red, green, blue three-color LED light source, and its light source ages cycle is long, and it is few that hermetically-sealed construction makes that veiling glare disturbs, thereby the measurement result that obtains is stablized.
Preferably, described light-emitting window is cup-shaped.
Veiling glare can be removed through the light-emitting window of cup-shaped to the reflected light of red, green, blue three coloured light in the measured object surface, measurement result is exerted an influence avoiding.
Preferably, arrange a black flannelette sealing gasket between described measuring chamber and the control circuit board.
Black flannelette sealing gasket can prevent that extraneous light from entering measuring chamber inside, guarantees the accuracy of measurement result.
Described measuring chamber adopts the black PVC material to make.
The measuring chamber of being made by the black PVC material has light good airproof performance, good insulating, is easy to process and advantage with low cost.
Preferably, be electrically connected one on the described control circuit board and be used for the USB interface that 5V powers.
Description of drawings
Fig. 1 is the densitometric structural representation of reflection type color;
Fig. 2 is the main TV structure synoptic diagram of measuring chamber;
Fig. 3 is along the cut-open view of A-A line among Fig. 2;
Fig. 4 is control circuit figure.
Embodiment
As shown in Figure 1, the reflection type color densitometer in the present embodiment comprises measuring chamber 1, led light source 2 and control circuit board 3.
Shown in Fig. 2 and 3, described measuring chamber 1 comprises a measuring chamber body 1-1, is provided with one along the central axis of above-mentioned measuring chamber body 1-1 and measures light hole 1-2.End at described measurement light hole 1-2 is provided with a light-emitting window 1-3, and the other end is provided with a survey sensor installation cavity 1-4.Three led light source mounting hole 1-5 also are set on the described measuring chamber body 1-1.Above-mentioned three led light source mounting hole 1-5 be distributed in light-emitting window 1-3 around, 1-3 is interconnected with light-emitting window.Preferably, above-mentioned light-emitting window 1-3 is cup-shaped, to be used for reflect stray light.
Get back to Fig. 1, described measuring chamber 1 is connected on the control circuit board 3.Between described measuring chamber 1 and control circuit board 3, arrange a black flannelette sealing gasket 4.Arrange a survey sensor 5 in above-mentioned survey sensor installation cavity 1-4, the pin of described survey sensor 5 passes black flannelette sealing gasket 4 and is connected electrically on the control circuit board 3.Above-mentioned survey sensor 5 adopts TCS320.In described each led light source mounting hole 1-5 a led light source 2 is installed respectively, the pin of above-mentioned led light source 2 is connected electrically on the control circuit board 3.Above-mentioned three led light sources 2 send ruddiness, green glow and blue light respectively.The wavelength of above-mentioned ruddiness is 630nm, and the wavelength of green glow is 535nm, and the wavelength of blue light is 465nm.
Preferably, above-mentioned measuring chamber 1 adopts the black PVC material to make.
As shown in Figure 4, the control circuit that loads on the control circuit board 3 is by the 5V power supply power supply of USB interface, and wherein Vcc represents the power supply of USB.
Used the field effect transistor BSP372 of low control voltage in the control circuit.Conducting control voltage is 4V, conducting resistance 0.002 Ω.Compare with the triode array of common usefulness, light source stability is much improved.
Adopt capacitor C 201-204, C206, C6 to carry out filtering simultaneously, reach the purpose of light stability.
Used the SPX117-3.3 low-dropout regulator that the power supply of USB has been carried out the secondary voltage stabilizing in the control circuit.Compare the good stability of power supply with the driving LED circuit that boosts of common usefulness.
Port P0.2, P0.3 in the control circuit, P0.6 are connected to single-chip microcomputer, luminous by Single-chip Controlling red, green, blue three-color light source.Single-chip microcomputer adopts C8051F326, is characterized in having USB interface, is connected very convenient with host computer.By port Vout is survey sensor 5 power supplies.
Claims (5)
1. a reflection type color densitometer is characterized in that: comprise measuring chamber, control circuit board, three led light sources of red, green, blue and survey sensor; Described measuring chamber comprises a measuring chamber body, is provided with one and measures light hole, light-emitting window and survey sensor installation cavity on above-mentioned measuring chamber body; Described light-emitting window is arranged in an end of measuring light hole, and the survey sensor installation cavity is arranged in the other end of measuring light hole; Three led light source mounting holes also are set on the described measuring chamber body, and above-mentioned each led light source mounting hole all is interconnected with light-emitting window; Described survey sensor is installed in above-mentioned survey sensor installation cavity, and the pin of described survey sensor is connected electrically on the control circuit board; The corresponding led light source of installing in above-mentioned each led light source mounting hole, the pin of above-mentioned led light source is connected electrically on the control circuit board.
2. reflection type color densitometer according to claim 1 is characterized in that: described light-emitting window is cup-shaped.
3. reflection type color densitometer according to claim 1 is characterized in that: arrange a black flannelette sealing gasket between described measuring chamber and the control circuit board.
4. according to claim 1 or 2 or 3 described reflection type color densitometers, it is characterized in that: described measuring chamber adopts the black PVC material to make.
5. reflection type color densitometer according to claim 1 is characterized in that: be electrically connected one on the described control circuit board and be used for the USB interface that 5V powers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020166893 CN201637670U (en) | 2010-04-21 | 2010-04-21 | Reflection-type color densitometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020166893 CN201637670U (en) | 2010-04-21 | 2010-04-21 | Reflection-type color densitometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201637670U true CN201637670U (en) | 2010-11-17 |
Family
ID=43082174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020166893 Expired - Fee Related CN201637670U (en) | 2010-04-21 | 2010-04-21 | Reflection-type color densitometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201637670U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063296A (en) * | 2012-10-30 | 2013-04-24 | 吴江市宏达探伤器材有限公司 | Panchromatic densimeter |
| CN107667285A (en) * | 2015-01-23 | 2018-02-06 | 德国福维克控股公司 | For handling the device on surface |
-
2010
- 2010-04-21 CN CN 201020166893 patent/CN201637670U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063296A (en) * | 2012-10-30 | 2013-04-24 | 吴江市宏达探伤器材有限公司 | Panchromatic densimeter |
| CN107667285A (en) * | 2015-01-23 | 2018-02-06 | 德国福维克控股公司 | For handling the device on surface |
| CN107667285B (en) * | 2015-01-23 | 2022-12-20 | 德国福维克控股公司 | Device for treating surfaces |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20120421 |