KR20070111671A - Color measuring apparatus using reflected light and control method there of - Google Patents

Abstract

A color measuring apparatus using reflected light and a control method of the same are provided to be connected with external devices and systems simply to accomplish functional expansion. A color measuring apparatus using reflected light includes a case(1), a measuring light source(10) emitting light of desired color, a light diffusion filter(2) diffusing the light, and a light detecting circuit unit(3) measuring color of the light. A measuring object is mounted on the end of the case. The measuring light source is installed in the case to be spaced apart from the object at a predetermined angle to emit light to the object. The light diffusion filter is installed inside the case to receive the light reflected from the object and diffuse the light. The light detecting circuit unit is installed inside the case so as to detect the diffused light at the light diffusion filter and measure color of the object based on the detection result.

Description

Color measurement device using reflected light and control method thereof {COLOR MEASURING APPARATUS USING REFLECTED LIGHT AND CONTROL METHOD THERE OF}

1 is a cross-sectional view of a color measurement device according to the present invention.

2 is a circuit block diagram of a color measurement apparatus according to the present invention;

Figure 3 is a block diagram of the central processing unit of the color measurement apparatus according to the present invention.

4 is a block diagram illustrating a memory configuration of a color measurement apparatus according to the present invention;

Figure 5 is a state block diagram connected to the color measurement device according to the present invention on-line.

Figure 6 is a flow chart of the color measurement process by the color measurement apparatus according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10: measuring light source 20: target sensor

21: Ambient sensor 30: Central processing unit

40: USB port 50: Memory

51: color profile data table 52: driving data table

53: input / output data table 60: communication module

70: power supply

The present invention relates to a color measuring device using a reflected light and a control method thereof, and in detail, it is possible to integrate a color profile divided into various standards to be applied to color measuring, and to be easily applied to a network such as a PC or the Internet. The present invention relates to a color measuring device and a control method thereof, which are connected to enable real-time data communication and generation of a database, and which is portable.

A color measuring device (hereinafter, referred to as a measuring device) is commonly referred to as a “color sensor”, and is a device that detects and processes colors of various objects having a specific color, so that the processed data can be visually confirmed.

Such measuring devices are applied in the textile industry, in the field of painting, books, publications, etc. It is widely applied in food, agriculture, forestry, fisheries, rubber, plastics, cosmetics and other industries that manage products.

In particular, the textile industry has a high proportion of color measurement mainly in the fashion industry, such as clothing, shoes, jewelry, etc. This is because color is a very important emotional factor in the fashion industry, and accurate color measurement and use thereof This is due to the fact that the fashion products produced are the main strategic factors for creating various business models.

The conventional measuring device as described above includes a light source for irradiating light to a measurement object having a predetermined color, a light receiving sensor that receives and detects the light emitted from the light source when reflected from the light source, and a signal detected by the light receiving sensor. It is composed of a dedicated color extraction control device that receives and processes.

Such a measuring device emits light from a light source and irradiates the object to be measured, and when the reflected light reflected and returned to the object is detected by the light receiving sensor, the signal detected by the light receiving sensor is processed exclusively in the form of frequency for each color. Is entered into the device.

The input frequency signal is extracted with color data corresponding to each frequency band in contrast with the color profile already input to the dedicated color extraction control device, and the extracted color data is output to a printer, a monitor, and the like.

In the conventional measuring apparatus as described above, the color profile inputted to the dedicated color extraction control apparatus mainly stores only a single standard (any constant standard associated with the manufacturer of the measuring apparatus among various standards). The confidence in the result is low because the deviation is ignored.

In addition, the measurement device described above is implemented by a dedicated color extraction control device provided by the manufacturer for product differentiation, so it is not compatible with a network such as a general PC, the Internet, etc. For this purpose, the buyer should be equipped with a separate compatible device Will increase the economic burden of the

In addition, since the dedicated color extraction control device is applied, various optional devices supported for function expansion must be included, so the size is not portable enough, and the price itself is very expensive. It is applied, but the problem that the penetration rate is very low arises.

The present invention has been invented to solve the above problems, to improve the reliability of the result by applying all the color profiles (profile) of various specifications when measuring the color, and is easily connected to external devices and systems to achieve functional expansion, portable The purpose of the present invention is to provide a color measuring apparatus and a control method thereof, which enables the real-time measurement of an object.

In order to achieve the above object, the present invention has the following configuration.

According to the present invention, in the color measurement apparatus, when a color signal is input, a color configuration of R, G, B is extracted from the input color signal, and the color signal is output as a numerical value corresponding to the already set color profile. A measurement light source for irradiating light to the light; A target sensor for detecting color by receiving the reflected light reflected from the measurement light source by being reflected back to a measurement object; Peripheral sensor for receiving the reflected light is reflected back to the section except the measurement object light of the measurement light source; A central processing unit which receives the signals received from the target sensor and the peripheral sensor, extracts the color components of R, G, and B from the color signals, compares them with the already set color profiles, and controls each component; It is configured to include a USB port installed to transfer the data processed in the central processing unit to the PC.

In addition, the present invention comprises the steps of: emitting light from the measurement light source, and the reflected light is reflected back and reflected back to the measurement object and its surroundings at the object sensor and the ambient sensor to detect; The received color signal is processed as a frequency signal, and the data of the R, G, and B color schemes corresponding to the processed frequency signal are called from a color profile data table already input to a memory, and the numerical value constituting the measurement object is obtained. Extracting color data; Calling the extracted color data and color profile data of various standards stored in a color profile data table to compare / determine them; And outputting color data compared / determined with the extracted numerical color data.

Here, when the external device is connected to the USB port before outputting the color data, characterized in that it comprises the step of transmitting the data to the external device.

Hereinafter, exemplary embodiments of the present invention to which the above configuration is applied will be described in detail with reference to the accompanying drawings.

1 is a sectional view of a configuration of a color measurement apparatus according to the present invention.

Referring to the drawings, a color measurement apparatus according to the present invention measures the case 1 to be the exterior, the measurement light source 10 for emitting light of a desired color, the light diffusion filter 2 for diffusing the light, and the color of the light. It consists of the photodetector circuit part 3 to detect.

The case 1 is configured to be detachably coupled to one end of the cover 4, the measurement target (T) is mounted on the inside. At this time, the cover 4 is configured to be sealed in the case 1 in order not to leak to the outside when the light of the measurement light source 10 installed in the case 1 is emitted to the measurement target (T).

The measurement light source 10 is installed to maintain a predetermined angle with respect to the measurement target (T) inside the case 1 while being spaced apart by a certain distance. Such measurement light source 10 may be configured to perform a more accurate measurement by increasing the amount of light reflected from the measurement target (T) to be described later to be installed radially around the measurement point of the measurement target (T).

The measurement light source 10 is composed of a plurality of light emitting diodes (LEDs) 11, 12, 13 configured to irradiate light onto a measurement object. In particular, the light emitting diodes 11, 12, 13 are provided with R (Red; red), G (Green; green), B (Blue; blue) to emit the measured light in white or other colors. Such light emitting diodes 11, 12, and 13 are light emitting diodes in which three light emitting diodes 11, 12, and 13 are unified so as to overlap their colors so as to emit measurement light of white or other colors described above. Applied in the form of modules.

On the outside where the measurement light source 10 is installed, an integrating sphere 4 having a spherical reflection inner surface is provided. In particular, the measurement light source 10 is installed closer to the measurement target (T) side on the center line horizontal to the measurement target (T) on the reflection inner surface of the integrating sphere (4) spaced apart a lower distance on the drawing.

In particular, in the integrating sphere 4, one side is opened to the measurement target side, the other side is opened to the light diffusion filter 2 side, and the light is emitted by the measurement light source 10, and the emitted light is the measurement target T ) Is formed by dividing the light reflected by the light diffusion filter 2 into sections. In addition, the light emitting section and the light receiving section are formed with a blocking film 6, wherein the blocking film 6 is formed in the image of the integrating sphere 4 so that the reflected light proceeds upward due to the property of reflecting light. It is installed at the central point separating the bottom. In addition, a through hole 7 through which the light reflected from the measurement target T is passed is formed at approximately the center of the blocking film 6.

Therefore, the reason why the measurement light source 10 is installed closer to the measurement target T on the upper and lower center lines of the integrating sphere 4 by installing the blocking film 6 can be explained. That is, the measurement light source 10 is installed below the center line of the integrating sphere 4 so that the light emitted from the measurement target T has an angle of at least 45 ° less than the measurement surface of the measurement target T. Will be maintained. As a result, the emitted light is reflected by the measurement target T, and then reflected by the inner surface of the integrating sphere 4, thereby increasing the amount of light scattered more.

For example, when light emitted from the measurement light source 10 on the right side of the drawing is emitted at an angle smaller than 45 °, it is reflected on the inner surface of the integrating sphere 4 on the lower left side to reduce the loss rate of light. In contrast, when the emitted light is emitted at an angle greater than 45 °, a greater amount of light is lost because a considerable amount of light is propagated and absorbed into the blocking film 6 rather than being reflected on the inner side of the integrating sphere 4. You lose. As a result, since the difference occurs in the amount of light received by the light diffusion filter 2 due to the difference in the amount of reflected light, it is natural to adopt a configuration capable of maintaining as much light as possible.

The light diffusion filter 2 is installed inside the case 1 to receive the reflected light when the light emitted from the measurement light source 10 is reflected to the measurement target T. Here, the light diffusion filter 2 is provided above the integrating sphere 4 for receiving light as described above.

The light diffusion filter 2 is formed such that the received light is diffused and projected. To this end, the light diffusion filter 2 is a transmissive plate member mainly made of acrylic resin or styrene resin. In particular, the light diffusion filter 2 receives light reflected on an uneven reflecting surface of the measurement target T (especially, a reflecting surface which may cause bending of the reflecting surface, such as a fabric), and then reflects unevenly. When the difference in the reflection color occurs due to the state, the non-uniform reflection color is diffused in the inside and mixed so that the average value of the non-uniform color is measured.

The light detection circuit section 3 is provided inside the case 1 to measure the color of the measurement target T by the light projected on the light diffusion filter 2. 2 is a block diagram of a photodetector circuit according to the present invention.

Referring to the drawings, the color measurement apparatus according to the present invention comprises a target sensor 20, the peripheral sensor 21, the central processing unit 30, the USB port 40.

The object sensor 20 is configured to receive the reflected light reflected by the light of the measurement light source 10 to the measurement target (T) and is projected onto the light diffusion filter 2 to detect the mixed color, the peripheral sensor ( 21 is configured to receive the reflected light is reflected back to the section excluding the measurement object light of the measurement light source (10).

The object sensor 20 and the peripheral sensor 21 are attached to or coated with a blue, green, red filter on the photodiode, and outputs a voltage output or a frequency output corresponding to the irradiated light source color as a digital or analog signal Applied as a part of.

The central processing unit 30 receives the signals received from the target sensor 20 and the peripheral sensor 21, extracts the color configuration of R, G, B from the color signal, and compares them with the already set color profile It is configured to control each configuration.

3 is a block diagram showing a specific configuration of the central processing unit.

Referring to the drawings, the central processing unit 30 includes an amplifier 31, an A / V converter 32, a microprocessor 33, and a driver 34.

The amplifier 31 is composed of a transistor circuit or an integrated circuit (IC) for amplifying a color signal, in particular an analog color signal in a frequency band that can be processed, and the A / V converter 32 processes the amplified signal. It is a circuit configuration that converts the digital signal as much as possible.

The microprocessor 34 includes an extraction circuit for extracting color components of R, G, and B from the input signal, and is a dedicated circuit configuration for controlling driving by performing signal processing of each component.

The drive driver 34 includes a printer 35 for displaying the numerical colors extracted by the microprocessor 33 to the outside, an LCD (liquid crystal display device, in particular, a TFT-LCD having a thin film transistor) ( 36) is a circuit configuration for driving.

The USB port 40 is a kind of terminal-type configuration installed to transfer data processed by the central processing unit 30 to a personal computer (PC) 100, which is a user's terminal, and the PC 100 is an external device. It can be replaced by a computer terminal (with a CPU or the like) dedicated to a network such as a PDA or the Internet.

4 is a block diagram illustrating a memory configuration of the color measurement apparatus according to the present invention.

Referring to the drawings, the central processing unit includes a memory in which data required for measuring color is stored, and the memory includes a color profile data table 51, a driving data table 52, and an input / output data table 53. It consists of.

The color profile data table 51 stores color profile data of various standards, and the color profile is an international standard such as Fenton color, Munsel color, sRGB, CMYK, and the like. -Data of domestic standard such as color system.

The drive data table 52 stores a program for driving control of each component by the central processing unit 30, and the input / output data table 53 is a series of input color signals, data, and driving conditions. It is an output configuration that allows the process of input to be saved and to move the stored contents to the database of the external device.

In the above configuration, the central processing unit 30 is connected to the communication module 60 for transmitting / receiving data such as color data and driving process by wire / wireless communication, in particular, the communication module 60 is When performing communication in a short space of a workplace and office, a Bluetooth module is applied, and when connected to an external line, a cellular communication module such as a mobile phone or a PDA may be applied.

5 is a state block diagram in which the color measurement device is connected on-line by the communication module.

Referring to the drawings, the communication module 60 is configured to be connected to the server 61 of the color measurement data supplier, which collects a variety of information data about the color measurement is built online. Here, the server 61 includes a database 62 in which the various information data is stored and operated by the server 61 and a terminal 63 of a supplier.

Such a communication module 60 is capable of online communication by the PC 100 when the photodetector circuit unit 3 and the user terminal PC 100 are connected as shown in the drawing so that the communication module 60 may be excluded. However, in order for the photodetector circuit unit 3 to be directly connected to the server 61, a communication module 60 meeting the conditions of a communication protocol, etc., is applied to the photodetector circuit unit 3 so that the server 61 and the communication module 60 are connected. ) Is connected and configured.

In addition, the measuring device according to the present invention, although the electric power for driving each component is supplied by the AC power can be used to step down, but in consideration of portability, the power supply unit 70 is configured in the form of a battery detachably connected to the device It can be implemented as.

Figure 6 is a flow chart of the color measurement process by the color measurement apparatus according to the present invention.

Referring to the drawing, due to the measuring device according to the present invention, the light is emitted from the measurement light source 10 to the measurement target side (S1), and the reflected light is reflected back and reflected back to the measurement target and its target sensor. Received by the sensor 20 and the peripheral sensor 21 is detected. (S2)

Thereafter, the received color signal is processed as a frequency signal by the target sensor 20 and the peripheral sensor 21 (S3) and the central processing unit 30 is a color profile data table 51 already input to the memory 50. In step S4, data about R, G, and B color schemes corresponding to the processed frequency signal are called to extract numerical color data constituting a measurement target (S4).

At this time, the color signal around the measurement target received by the peripheral sensor 21 is a signal that is ignored if interference is not generated in measuring the color by the data of the color profile data table 51, the interference factor is When generated, the interference ratio is decomposed into numerical values of R, G, and B colors, and subtracted and subtracted from the numerical color data extracted by the target sensor 20 to obtain accurate color data.

When the above process is performed, the central processing unit 30 calls and compares / determines the extracted color data and color profile data of various standards stored in the color profile data table (S5). Color data compared / determined with and are output to the outside through the printer 35 or the LCD 36 (S8).

In the above process, if an external device such as the PC 100 is connected to the USB port 40 before outputting the color data (S6), the data is transmitted to the external device such as the PC 100 to the external device. By applying an extension function, color data can be obtained (S9).

In addition, when there is a target for data communication before outputting the color data (S7), data communication for transmitting the color data to the communication target is performed to notify the communication target of the color data of the measurement target in real time. It becomes possible (S10).

In addition, in the data communication, when the PC 100 is connected to the measurement apparatus, more convenient communication may be performed through the Internet and network communication of the PC.

As a further extended function, if each data table 51, 52, 53, etc. stored in the memory 50 is built as a database in the PC 100, the measurement apparatus can be made smaller and manufactured. Various data carried out are systematically established, and more technical progress can be expected.

As described above, the present invention, by applying all of the color profile (profile) of various standards when measuring the color to improve the reliability of the result is obtained an effect that can prove the excellence of the product.

In addition, the present invention can be easily connected to external devices and systems such as a PC, the Internet, etc., so that the functional expansion can be applied to more application fields. There is an effect to obtain a high satisfaction of the product as it is performed.

Claims (14)

When the color signal is input, in the color measurement apparatus for extracting the color configuration of the R, G, B from the input color signal, and outputs it to a value corresponding to the color profile already set, A case in which a measurement object is mounted at an end portion; A measurement light source installed to be spaced apart from the inside of the case while maintaining an angle with respect to the measurement object; A light diffusion filter installed at the inside of the case to receive the reflected light when the emitted light is reflected on the measurement object and diffuse and project the received light; And a light detection circuit unit installed inside the case so as to sense the light projected on the light diffusion filter and measuring the color of the measurement target by the projected light. The method of claim 1, An integrating sphere having a reflective inner surface in the shape of a sphere is provided outside the measuring light source, and the measuring light source is formed closer to the measurement target side on a center line horizontal to the measurement object of the integrating sphere reflection inner surface. Color measurement device used. The method of claim 2, wherein the integrating sphere is One side is opened to the measurement target side, and the other side is opened to the light diffusion filter side to be divided into a section in which light is emitted by the measurement light source and a section in which the emitted light is reflected by the measurement target and received by the light diffusion filter. The blocking film is mounted on, the color measurement device using the reflected light, characterized in that the through-hole is formed in the center of the blocking film to pass the light reflected from the measurement target. The method according to any one of claims 1 to 3, wherein the measurement light source Color measuring device using the reflected light, characterized in that a plurality of radially installed around the measuring point of the measurement target. The method according to any one of claims 1 to 3, wherein the measurement light source Color measuring device using the reflected light, characterized in that the LED module for emitting the light of the desired color by the combination of the LED provided in the three primary colors of light, R, G, B colors. The method of claim 1, wherein the photodetector circuit portion A target sensor for detecting color by receiving the reflected light reflected from the measurement light source by being reflected back to the measurement object; Peripheral sensor for receiving the reflected light is reflected back to the section except the measurement object light of the measurement light source; A central processing unit which receives the signals received from the target sensor and the peripheral sensor, extracts the color components of R, G, and B from the color signals, compares them with the already set color profiles, and controls each component; Color measurement device using the reflected light, characterized in that it comprises a USB port installed to transfer the data processed in the central processing unit to the PC. The method of claim 6, The central processing unit includes a memory storing data required for measuring the color, The memory, A color profile data table storing color profile data of various standards; A drive data table storing a program for driving control of each component by the central processing unit; The input color signal and a series of processes in which data and driving conditions are performed are input and stored, and the input / output data table includes an input / output data table for outputting the stored contents to be moved to a database of an external device. Color measurement device. The method of claim 6, The central processing unit is a color measurement device using the reflected light, characterized in that it comprises a communication module for transmitting and receiving data, such as color data, driving process by wired / wireless communication. The method of claim 6, Color measuring device using the reflected light, characterized in that it comprises a power supply unit configured in the form of a removable battery for supplying electric power for driving each component. 7. The light detecting circuit of claim 1 or 6, wherein the photodetector circuit part Colorimetric measurement device using the reflected light, characterized in that connected to the personal computer receives the program data required for the color measurement, and configured to process the program data. The method of claim 8, wherein the communication module A color measuring device using the reflected light, characterized in that the various information data on the color measurement is collected and connected to the server of the color measurement data supplier built online. Emitting light from the measurement light source, and receiving and detecting the reflected light reflected from the measured object and its surroundings at the object sensor and the ambient sensor; The received color signal is processed as a frequency signal, and the data of the R, G, and B color schemes corresponding to the processed frequency signal are called from a color profile data table already input to a memory, and the numerical value constituting the measurement object is obtained. Extracting color data; Calling the extracted color data and color profile data of various standards stored in a color profile data table to compare / determine them; And outputting color data compared / determined with the extracted numerical color data. The method of claim 12, And transmitting data to an external device when the external device is connected to the USB port prior to outputting the color data. The method of claim 12, And performing data communication for transmitting the color data to the communication object when the object for data communication exists before outputting the color data.

Images