KR20210040730A - Detachable spectroscopic apparatus for analyzing specific material - Google Patents

Abstract

Provided is a spectroscopic apparatus detachable from a portable apparatus for analyzing a specific material. According to the present invention, the spectroscopic apparatus detachable from the portable apparatus for analyzing the specific material comprises: a housing which can be engaged with the portable apparatus; and a container accommodating a sample, and further comprises one or more of: a light source providing an optical signal of a specific wavelength to the sample to check whether a hazardous substance is included in the sample or not; a detector which detects a detection signal of the specific wavelength emitted from the sample; and a microcontroller which stores a normal signal for when the sample does not include any hazardous substance in advance, compares the detection signal detected from the detector with the normal signal, and determines whether the sample includes the hazardous substance or not. When the sample includes the hazardous substance, the detection signal has a peak value at the specific wavelength. When the microcontroller compares the normal signal with the detection signal, the microcontroller determines that the sample includes the hazardous substance if a peak value appears in the specific wavelength.

Description

A spectroscopic device for analysis of specific substances that can be attached to a portable device {DETACHABLE SPECTROSCOPIC APPARATUS FOR ANALYZING SPECIFIC MATERIAL}

The present invention relates to a spectroscopic device for the analysis of a specific substance that can be attached to a portable device.

Spectroscopy is a technology that studies the molecular structure and changes of a sample by measuring absorption, divergence and scattering of light. Spectroscopes such as IR (infrared) spectroscopy and Raman spectroscopy mainly measure and analyze the structures of organic matter and biochemical species by measuring the absorption, divergence, and scattering intensity of sample molecules in a spectrum for a frequency or wavelength.

Spectroscopy such as UV-VIS Spectroscopy using the Bear-Lambert law can measure the properties of various samples, including biochemicals, by measuring particle size, absorbance by wavelength, and transmittance. Analyze and determine the sample taking into account the wavelength selectivity. However, conventional spectroscopy and spectroscopy have large changes in absorbed or transmitted signals due to various system noises including changes in signal intensity of incident light and shot noise. In addition, this noise interferes with accurate and reliable measurements. In order to overcome this limitation, in spectroscopy and spectroscopy, techniques for removing noise, improving molecular vibration, and efficiently improving the sensitivity of an effective signal are required.

However, in order to manufacture a spectroscopic device capable of independently operating, since various configurations including a light source, a detector, a microcontroller, and a communication unit must be included in the spectroscopic device, the cost of the spectroscopic device may increase and battery issues may occur.

Korean Registered Patent Publication No. 10-1690073, 2016. 12. 21.

The problem to be solved by the present invention is to provide a spectroscopic device for the analysis of a specific material detachable to a portable device such as a smartphone.

The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

The spectroscopic device for analysis of a specific material detachable to a portable device according to an aspect of the present invention for solving the above-described problems includes a housing and a container for accommodating a sample of a specific material, and including harmful components in the sample. A light source that provides an optical signal of a specific wavelength to a sample to check whether the sample, a detector that detects the detection signal of the specific wavelength emitted from the sample, and extracts an effective signal from the detection signal, and the sample is a harmful component By storing in advance a normal signal when not including the normal signal, further comprising at least one of the microcontroller for determining whether the sample contains a harmful component by comparing the valid signal and the normal signal, the sample contains the harmful component In this case, the detection signal has a peak value at the specific wavelength, and when the microcontroller compares the normal signal and the effective signal, when a peak value appears at a specific wavelength, it is determined that the harmful component is included in the sample. It is characterized by judging.

In addition, the microcontroller shares the orthogonal code with an encoder for generating an orthogonal code to encode the optical signal in a pattern corresponding to an orthogonal code, and the orthogonal code, based on a correlation between the orthogonal code and the detection signal. It may include a decoder for decoding the detection signal.

In addition, the decoder may extract a valid signal by removing noise included in the detection signal based on the orthogonal code.

In addition, the orthogonal code is a binary sequence, and the pulse waveform of the optical signal may be encoded by line encoding according to the orthogonal code.

Further, the communication unit further includes a communication unit that communicates with the user device, and the communication unit may transmit the result data to the user device when it is determined by the microcontroller whether the sample contains a harmful component.

In addition, when the communication unit receives sample information to be analyzed from the user device, the microcontroller may determine a wavelength of a light source and the number of light sources required to identify harmful components based on the sample information.

In addition, when the number of light sources is plural, each optical signal provided by the plurality of light sources is sequentially provided to the sample, and the microcontroller converts each optical signal into a pattern corresponding to a different orthogonal code. Each can be encoded.

In addition, when the number of light sources is plural, the detector detects each detection signal emitted from the sample, and the microcontroller decodes each of the detection signals, and sums the decoded detection signals. It may be to acquire a valid signal and compare the obtained valid signal with a normal signal.

In addition, the detection signal may be generated when all or part of the optical signal is absorbed, scattered, transmitted, or reflected from the sample.

In addition, it may further include a cover coupled to the upper end of the housing or the container to be opened and closed to block light from the outside.

In addition, the container may be formed to be detachably attached to the housing.

Other specific details of the present invention are included in the detailed description and drawings.

According to the present invention described above, since the spectroscopic device can be attached to and detached from a portable device such as a smartphone, the spectroscopic device can be miniaturized with a simpler structure.

In addition, by efficiently removing noise from the detection signal using an orthogonal code, a more reliable analysis result can be extracted, and through this, it is possible to more accurately determine whether or not a toxic substance is contained in a specific substance.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

1 is a block diagram of a spectroscopic device for analysis of a specific substance detachable to a portable device according to an embodiment of the present invention.
2 is a schematic cross-sectional view of a spectroscopic device for analysis of a specific substance detachable to a portable device according to an embodiment of the present invention.
FIG. 3 is a diagram for describing a combination of a spectroscopic device for analysis of a specific substance detachable from the portable device with a portable device according to an embodiment of the present invention.
4 is a conceptual diagram of a spectroscopic device for analysis of a specific substance detachable to a portable device according to an embodiment of the present invention.
5 is a view for explaining in more detail a spectroscopic device for analysis of a specific substance detachable to a portable device according to an embodiment of the present invention.
6 to 7 are block diagrams for explaining in more detail a channel included in the light source of FIG. 6 according to an embodiment of the present invention.
9 is a flowchart illustrating a spectroscopic method for analyzing a specific substance according to an embodiment of the present invention.
10 is a flowchart illustrating the spectral method of FIG. 9 in more detail in the time domain.
FIG. 11 is a flowchart for describing step S240 of FIG. 10 in more detail.
12 is a flowchart for explaining in more detail the spectral method of FIG. 9 in the frequency domain.
13 is a flowchart for describing step S340 of FIG. 12 in more detail.
14 is a flow chart of a spectroscopic method for analyzing a specific substance according to another embodiment of the present invention.
15 is a more detailed flowchart illustrating steps S440 and S450 of FIG. 14.

Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in a variety of different forms. It is provided to fully inform the skilled person of the scope of the present invention, and the present invention is only defined by the scope of the claims.

The terms used in the present specification are for describing exemplary embodiments and are not intended to limit the present invention. In this specification, the singular form also includes the plural form unless specifically stated in the phrase. As used herein, “comprises” and/or “comprising” do not exclude the presence or addition of one or more other elements other than the mentioned elements. Throughout the specification, the same reference numerals refer to the same elements, and "and/or" includes each and all combinations of one or more of the mentioned elements. Although "first", "second", and the like are used to describe various elements, it goes without saying that these elements are not limited by these terms. These terms are only used to distinguish one component from another component. Therefore, it goes without saying that the first component mentioned below may be the second component within the technical idea of the present invention.

Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used with meanings that can be commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not interpreted ideally or excessively unless explicitly defined specifically.

Spatially relative terms "below", "beneath", "lower", "above", "upper", etc. It can be used to easily describe the correlation between a component and other components. Spatially relative terms should be understood as terms including different directions of components during use or operation in addition to the directions shown in the drawings. For example, if a component shown in a drawing is turned over, a component described as "below" or "beneath" of another component will be placed "above" the other component. I can. Accordingly, the exemplary term “below” may include both directions below and above. Components may be oriented in other directions, and thus spatially relative terms may be interpreted according to the orientation.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a spectroscopic device for analysis of a specific material detachable to a portable device according to an embodiment of the present invention, and FIG. 2 is a block diagram showing an analysis of a specific material detachable to a portable device according to an embodiment of the present invention. FIG. 3 is a schematic cross-sectional view of a spectroscopic device for analysis, and FIG. 3 is a view for explaining a combination of a spectroscopic device with a portable device for analysis of a specific substance detachable to the portable device according to an embodiment of the present invention, and FIG. A conceptual diagram of a spectroscopic device for analysis of a specific substance detachable to a portable device according to an embodiment of the present invention.

The spectroscopic device 100 (hereinafter, referred to as a spectroscopic device) for analysis of a specific substance that is detachable to the portable device of the present invention is manufactured or set to analyze only a specific substance. Since the conventional spectroscopic device operates alone, there are limitations in miniaturization and cost reduction, but the spectroscopic device 100 of the present invention is designed to be detachable from a portable device.

Referring to FIG. 1, the spectroscopic apparatus 100 includes a housing 110 and a container 120, and further includes at least one of a light source 130, a detector 140, a microcontroller 150, and a communication unit 160. do. Here, the insufficient configuration of the spectroscopic device 100 can be assisted by the configuration of the portable device 200.

The housing 110 forms the exterior of the spectroscopic device 100.

Here, referring to FIG. 3, the housing 110 includes a region that can be coupled to the portable device 200. That is, the spectroscopic device 100 may be coupled to the portable device 200 through the housing 110. For example, referring to FIG. 3(a), the spectroscopic device 100 may be coupled to the portable device 200 through a physical coupling, and referring to FIG. 3(b), the spectroscopic device 100 has an insertion protrusion. The connectable region 101 having the shape of is inserted into the earphone insertion hole or the charging terminal insertion hole of the portable device 200, and thus may be physically/electrically coupled to the portable device 200.

The housing 110 forms a space in which other components of the spectroscopic apparatus 100 are mounted.

The housing 100 may be formed so that light cannot pass through the housing 100 from the outside.

The container 120 refers to a space in which the sample 10 is accommodated and measurement is performed by the light source 130 and the detector 140.

In this case, the sample 10 may be an analysis target of the spectroscopic apparatus 100. Sample 10 may be a specific material or a specific material for analysis. The sample 10 may absorb all or part of an optical signal provided from the light source 130. In addition, the sample 10 may transmit or reflect all or part of the optical signal. Here, all or part of the optical signal may mean all or part of a wavelength, all or part of a frequency, and all or part of a pattern. The sample 10 receiving the optical signal may emit light in response to the optical signal. Here, light may also be referred to as a detection signal. The sample 10 may generate a detection signal according to internal molecular vibrations generated by an optical signal provided from a light source.

As shown in FIG. 2, the container 120 is formed to be inserted into the housing 10, and is formed to be detachable inside and outside the housing 110.

The container 120 may be made of a transparent material so that light irradiated from the light source 130 can transmit.

In the repeated measurement process, the container 120 may be contaminated by the sample 10. If the container 120 becomes contaminated, that is, if the sample 10 remains in the container 120, an error may occur in the analysis result. Therefore, in order to prevent this situation from occurring, the container 120 may be formed to be replaceable or washable.

In addition, the spectroscopic apparatus 100 may include a cover (not shown) that blocks light from outside. In this case, it is formed to be opened and closed by being coupled to the upper end of the housing 110 or the container 120.

The light source 130 provides an optical signal of a specific wavelength to the sample 10.

When the number of light sources 130 is plural, each optical signal provided by the plurality of light sources is sequentially provided to the sample 10.

As shown in Figure 2 (a), the light source 130 is fixed to the lower surface of the housing 110 so as to be located under the container 120, and irradiates light to the sample 10 through the container 120 do.

As shown in FIG. 2(b), the light source 130 is fixed to one inner side of the housing 110 so as to be positioned opposite the container 120, and passes through the container 120 to the sample 10. Irradiate light.

The light source 130 may include at least one light source or white lamp having a single wavelength such as a laser and a laser diode. In addition, the light source 130 may include at least one light source having a broad spectrum such as a red light-emitting diode (LED), a blue LED, a green LED, and a near-infrared (NIR) LED. In addition, the light source 120 may include at least one or more light sources separated into a polarization state having a single wavelength (eg, 0, 45, or 90 degrees).

The number and type of the light sources 130 may be determined according to a specific material to be analyzed. That is, the light source 130 may be used to determine a wavelength band required to determine whether a specific substance contains a harmful substance, and to irradiate light in the corresponding wavelength band. For example, assuming that the wavelength band required for analysis of the sample 10 is the wavelength band a, the light source 130 that irradiates light in the wavelength band a may be used. Alternatively, when the white lamp that irradiates all wavelength bands is the light source 130, the white lamp may be set to irradiate only the wavelength band a by the user device.

At this time, if a plurality of wavelength bands (e.g., a wavelength band, b wavelength band, c wavelength band) are required for analysis of a specific substance, three The light source 130 may be used, or a white lamp may be set to irradiate only the a wavelength band, the b wavelength band, and the c wavelength band by a user device.

Accordingly, since the spectroscopic device 100 is manufactured or set only for the analysis of a specific substance, the spectroscopic device 100 can be miniaturized, and accordingly, the cost of the spectroscopic device 100 can be significantly reduced.

As shown in FIG. 4, the detector 140 detects a detection signal of a specific wavelength emitted from the sample 10.

The detector 140 may detect or receive a detection signal from the sample 10. The detector 140 may detect by separating the detection signal for each wavelength band. The detector 130 may measure a spectrum for a frequency or wavelength of a detection signal.

As shown in Figure 2 (a), the detector 140 is fixed to the lower surface of the housing 110 so as to be located under the container 120, and the detection emitted to the sample 10 through the container 120 Be provided with a signal.

As shown in Figure 2 (b), the detector 140 is fixed to one inner surface of the housing 110 so as to be located opposite the container 120, the light source 130 with the container 120 interposed therebetween. It is fixed in a position opposite to. The detector 140 passes through the container 120 and receives a detection signal emitted to the sample 10.

When the number of light sources 130 is plural, the detector 130 may sequentially detect a plurality of detection signals emitted from the sample 10, or may separate and detect one detection signal for each of a plurality of wavelength bands. have.

Although not shown in FIGS. 1 to 4, the spectroscopic apparatus 100 may include an optical element between the sample 10 and the detector 140. The optical element may include a diffractive element for diffracting the detection signal and a dispersion element for dispersing the detection signal. The optical element can effectively collect the detection signal from the sample 10 to the detector 140 by dispersing or diffracting the detection signal.

The microcontroller 150 determines whether the sample 10 does not contain harmful components.

Specifically, the microcontroller 150 stores a normal signal when the sample 10 does not contain harmful components in advance, and compares the detection signal detected from the detector 140 with the normal signal to reduce the harmful component of the sample. It can be determined whether it is included.

4, the microcontroller 150 includes an encoder 152 and a decoder 154.

The encoder 152 may generate an orthogonal code for encoding an optical signal. The encoder 152 may generate an orthogonal code and modulate the optical signal into a pattern of an orthogonal code.

In this case, the optical signal is a signal of a specific wavelength band. That is, the spectroscopic apparatus 100 is preset to use only the wavelength band necessary for the analysis of the sample 10, and when analyzing the sample 10, the analysis can be performed only for a specific wavelength band.

In one embodiment, the light source 130 may receive an orthogonal code from the encoder 152. The light source 130 may be modulated according to an orthogonal code received from the encoder 152. When there is one light source 130 required for analysis of the sample 10, the encoder 152 generates one orthogonal code, encodes and modulates the optical signal for a specific wavelength band into a pattern corresponding to one orthogonal code. .

When there are a plurality of light sources 130 required for analysis of the sample 10, the encoder 152 generates a plurality of orthogonal codes, and encodes each optical signal for a plurality of wavelength bands in a pattern corresponding to a different orthogonal code. To modulate.

A method of modulating the light source 130 with an orthogonal code may include an optical modulation method, an electrical modulation method, and a mechanical modulation method. Each modulation method will be described later in detail in FIGS. 6 to 8.

The decoder 154 receives a detection signal from the detector 140 and decodes the detection signal. At this time, the detection signal is also a signal of a specific wavelength band.

The decoder 154 may extract or obtain a valid signal from the detection signal. That is, the decoder 154 may extract a valid signal by performing convolution of the detected signal with an orthogonal code.

In this case, the decoder 152 may match the timing with the encoder 152 by clock synchronization. The decoder 154 may synchronize an orthogonal code from the encoder 152. The encoder 152 may transmit data and signals to the decoder 154 and the decoder 154 may receive data and signals from the encoder 152. Data and signals may include information on an orthogonal code. That is, the decoder 154 may share an orthogonal code with the encoder 152.

Accordingly, the decoder 154 performs convolution of detection signalization using the same orthogonal code used when the optical signal is encoded, and thereby obtains a valid signal.

The spectroscopic apparatus 100 according to the present invention performing an analysis using an effective signal based on an orthogonal code may increase the intensity and sensitivity of a signal for molecules of the sample 10 such as food and organic molecules. The spectroscopic apparatus 100 according to the present invention may improve the performance of a sensing and imaging technology for the sample 10.

The microcontroller 150 may analyze the sample 10 based on the valid signal extracted from the decoded detection signal. That is, the microcontroller 150 may check whether the sample 10 contains harmful components by comparing the valid signal and the normal signal.

Specifically, when the sample 10 contains a harmful component, the detection signal has a peak value at a specific wavelength. Therefore, when the microcontroller 150 compares the normal signal and the detection signal (valid signal), unlike the normal signal, if the effective signal has a peak value at a specific wavelength, the microcontroller 150 is It can be determined that is included.

Here, the normal signal is data that is previously stored in the storage unit (not shown) of the spectroscopic apparatus 100, and represents the signal when the sample 10 to be analyzed is in a normal state (when it does not contain harmful components). to be. Accordingly, the microcontroller 150 may compare the previously stored normal signal with the extracted detection signal (valid signal) and determine that the sample 10 is not normal if they do not match.

The communication unit 160 communicates with an external device (eg, a user device).

Here, the user is a person who analyzes a specific substance using the spectroscopic device 100. The user can perform analysis by installing a program (application) on the user device. In this case, the program refers to a program provided by a company that provides a specific substance analysis service using the spectroscopic device 100.

In one embodiment, since the spectroscopic apparatus 100 is manufactured for analysis of a specific material, the number and wavelength bands of the light sources 130 are set according to the specific material. Therefore, when the user requests analysis through the user device, the spectroscopic device 100 performs analysis of the sample 10 and transmits result data on whether harmful components are contained in the sample 10 through the application of the user device. to provide.

In another embodiment, the spectroscopic apparatus 100 may determine the number and wavelength bands of the light sources 130 according to the settings of the user apparatus. When the user inputs sample information to be analyzed through an application installed in the user device, the spectroscopic device 100 (specifically, the microcontroller 150) determines the wavelength and number of the light sources 130 based on the sample information. , A wavelength band required to analyze the sample and the number of light sources 130 for irradiating light in the corresponding wavelength band may be determined, and analysis may be performed.

Hereinafter, with reference to FIGS. 5 to 13, an optical signal is encoded using an orthogonal code, and a valid signal is extracted from the detection signal by performing convolution with the detection signal using the same orthogonal code.

5 is a view for explaining in more detail a spectroscopic device for analysis of a specific substance detachable to a portable device according to an embodiment of the present invention.

FIG. 5 will be described with reference to FIG. 4. The encoder 152 may include a code generator (not shown). The light source 130 may include first to third channels 131-133. The detector 140 may include an array sensor 141. The decoder 154 may include a signal processor (not shown).

A code generator (not shown) may generate an orthogonal code for encoding an optical signal. The orthogonal code may be a code based on orthogonality. Specifically, a plurality of different orthogonal codes may be orthogonal to each other. That is, cross-correlation values between a plurality of different orthogonal codes may be 0. For example, the orthogonal code may be a pseudo-noise (PN) code or a gold code. The orthogonal code can be a binary sequence. The code generator (not shown) may generate a plurality of orthogonal codes. The code generator (not shown) may separate and output a plurality of orthogonal codes. The code generator (not shown) may simultaneously output a plurality of orthogonal codes.

The light source 130 includes one or more channels. The number of channels included in the light source 130 may be determined according to a wavelength required to analyze the sample 10. That is, when one wavelength is used to analyze a specific sample 10, the light source 130 may include one channel, and when three wavelengths are used to analyze a specific sample, the light source 130 Can include channels.

The first channel 131 may output an optical signal toward the sample 10. Before outputting the optical signal, the first channel 131 may determine the wavelength of the optical signal. The first channel 131 may output an optical signal having a determined wavelength. The wavelengths of the optical signals outputted by the first to third channels 131-133 are different from each other.

In an embodiment, the first channel 131 may receive a first orthogonal code generated by a code generator (not shown) and may generate a first optical signal based on the first orthogonal code. The first orthogonal code may be modulated into a first optical signal through the first channel 131. The first channel 131 may encode the first optical signal in a pattern corresponding to the first orthogonal code. The first channel 131 may encode the pulse waveform of the first optical signal in a pattern corresponding to the binary sequence of the first orthogonal code. The first channel 131 may encode the pulse waveform of the first optical signal by line encoding according to the first orthogonal code.

Referring to FIG. 5, for example, in the case of a binary sequence in which the first orthogonal code is 1110100, the magnitude of the pulse waveform of the first optical signal may sequentially correspond to bit values of the first orthogonal code. The second and third channels 132 and 133 may be implemented by the same principle as the first channel 131 and, like the first channel 131, the second and third channels 132 and 133 ) May encode the second and third optical signals based on the second orthogonal code (eg, 1001011) and the second orthogonal code (eg, 1101011) according to the same principle as the first channel. That is, the second and third orthogonal codes may be modulated into second and third optical signals through the second and third channels 132 and 133, respectively. In FIG. 5, only the first to third channels 131-133 are shown, but the number of channels included in the light source 130 is not limited to three.

The array sensor 141 may detect or receive a detection signal from the sample 10. The array sensor 141 may detect a plurality of detection signals. Here, each of the plurality of detection signals may correspond to the first to third channels 131-133. The array sensor 141 may include a plurality of pixels, and the plurality of pixels may respectively correspond to a plurality of detection signals. The array sensor 141 may receive a plurality of detection signals simultaneously or sequentially.

A signal processor (not shown) may receive a detection signal from the detector 140 and extract a valid signal from the detection signal. The signal processor (not shown) may receive a plurality of detection signals and obtain a valid signal based on the plurality of detection signals.

The signal processor (not shown) may synchronize a code generator (not shown) and a plurality of orthogonal codes. The signal processor (not shown) may receive data and signals including information on an orthogonal code from a code generator (not shown). The signal processor (not shown) may share an orthogonal code with a code generator (not shown). The signal processor (not shown) may receive a plurality of detection signals respectively corresponding to a plurality of orthogonal codes from the array sensor 141, and extract a valid signal from the plurality of detection signals based on the plurality of orthogonal codes. can do. In an embodiment, the signal processor (not shown) may receive a detection signal corresponding to the first orthogonal code from among a plurality of orthogonal codes. The signal processor (not shown) may obtain an operation result based on a correlation between the first orthogonal code and a detection signal corresponding to the first orthogonal code. Repetitively, the signal processor (not shown) may obtain a plurality of calculation results based on a correlation from a plurality of orthogonal codes and a plurality of detection signals. The signal processor (not shown) may obtain a valid signal by summing a plurality of calculation results.

6 to 7 are block diagrams for explaining in more detail a channel included in the light source of FIG. 5 according to an embodiment of the present invention.

Referring to FIG. 6, the channel 131a may include a driver 131a_1 and an optical signal generator 131a_2. The channel 131a may be substantially the same as the first to third channels 131 to 133 of FIG. 5. 6 will be described with reference to FIG. 5.

The driver 131a_1 may be a device for generating an optical signal by an electrical modulation method. The driver 131a_1 may generate a driving signal based on an orthogonal code received from a code generator (not shown) through the channel 131a. The driving signal may include information on an orthogonal code. The driving signal may be an electrical control signal.

The optical signal generator 131a_2 may generate an optical signal provided as the sample 10. The optical signal generator 131a_2 may generate an optical signal together with an encoding process. The optical signal generator 131a_2 may be implemented with various devices including LEDs, laser diodes, and the like.

The driver 131a_1 may transmit a driving signal to the optical signal generator 131a_2, and the optical signal generator 131a_2 may receive a driving signal. The optical signal generator 131a_2 may be controlled by a driving signal. The optical signal generator 131a_2 may generate an optical signal encoded in a pattern corresponding to an orthogonal code based on a driving signal including an orthogonal code.

Referring to FIG. 7, the channel 131b may include a continuous wave generator 131b_1 and an optical modulator 131b_2. The channel 131b may be substantially the same as the first to third channels 131 to 133 of FIG. 5. FIG. 7 will be described with reference to FIG. 5.

The continuous wave generator 131b_1 may output light of a continuous waveform. Here, the continuous waveform may be various waveforms including a sine wave and a square wave. Before outputting the continuous wave, the continuous wave generator 131b_1 may determine the wavelength, phase, and amplitude of the continuous wave.

The optical modulator 131b_2 may be a device for generating an optical signal by an optical modulation method. The optical modulator 131b_2 may be operated according to an operating voltage. The operating voltage of the optical modulator 131b_2 may be adjusted according to an orthogonal code received from a code generator (not shown) by the channel 131b. The optical modulator 131b_2 may modulate the phase and amplitude of light according to the operating voltage.

The continuous wave generator 131b_1 may output a continuous wave toward the optical modulator 131b_2. The continuous wave generator 131b_1 may provide a continuous wave to the optical modulator 131b_2, and the optical modulator 131b_2 may modulate the amplitude and phase of the continuous wave. The optical modulator 131b_2 may modulate the amplitude and phase of the continuous wave based on an orthogonal code received from a code generator (not shown) by the channel 131b. The optical modulator 131b_2 may generate an optical signal encoded in a pattern corresponding to the orthogonal code by modulating the amplitude and phase of the continuous wave according to the orthogonal code. The operating voltage of the optical modulator 131b_2 may be adjusted by an orthogonal code. The optical modulator 131b_2 may modulate a continuous wave with an optical signal encoded in a pattern corresponding to an orthogonal code based on the adjusted operating voltage.

Referring to FIG. 8, the channel 131c may include a continuous wave generator 131c_1, at least one slit 131c_2, and a slit controller 131c_3. The channel 131c may be substantially the same as the first to third channels 131 to 133 of FIG. 5. FIG. 8 will be described with reference to FIGS. 5 and 7.

The continuous wave generator 131c_1 may be substantially the same as the continuous wave generator 131b_1 of FIG. 7. Therefore, a detailed description of the continuous wave generator 131c_1 in FIG. 8 is omitted.

At least one or more slits 131c_2 may transmit the continuous wave output from the continuous wave generator 131c_1. At least one or more slits 131c_2 may adjust the transmittance of the continuous wave. At least one or more slits 131c_2 may diffract the transmitted continuous wave.

The slit controller 131c_3 may generate a control signal for controlling at least one slit 131c_2. The control signal of the slit controller 131c_3 may be generated based on an orthogonal code received from a code generator (not shown) by the channel 131c. The slit controller 131c_3 may transmit a control signal to at least one slit 131c_2.

In an embodiment, the slit controller 131c_3 may transmit a control signal to at least one or more slits 131c_2 and at least one or more slits may receive a control signal. The slit controller 131c_3 may control an opening/closing operation of at least one slit 131c_2 by a control signal. The slit controller 131c_3 may adjust the opening and closing operation of the at least one slit 131c_2 to be the same as the pattern corresponding to the orthogonal code. At least one or more slits 131c_2 may modulate the continuous wave with an optical signal encoded in a pattern corresponding to an orthogonal code based on an opening/closing operation in response to a control signal.

9 is a flowchart illustrating a spectroscopic method for analyzing a specific substance according to an embodiment of the present invention. FIG. 9 will be described with reference to FIG. 4.

In step S110, the light source 130 may generate an optical signal ENC encoded in a pattern corresponding to the orthogonal code OC based on the orthogonal code OC and the continuous wave signal CW. The light source 130 may perform convolution of the orthogonal code OC and the continuous wave signal CW. The light source 130 may generate an optical signal ENC based on the result of convolution.

In step S120, the light source 130 may provide an optical signal ENC to the sample 10. In step S130, the detector 140 may detect the detection signal DET from the sample 10. All or part of the optical signal ENC may be absorbed, transmitted, scattered, and reflected in the sample 10. The detection signal DET may be a result of the optical signal ENC absorbed, transmitted, scattered, and reflected from the sample 10. In addition, the detection signal DET may be a deformation of the optical signal ENC. The detection signal DET may include a valid signal EFF and noise for analysis of the sample 10. The detection signal DET by itself may not be useful for analysis of the sample 10. For example, the detection signal DET by itself may not be able to determine the chemical composition of the sample 10 (eg, the structure of the molecule, the change of the molecule, and the molecular weight, etc.).

In step S140, the decoder 154 may extract the effective signal EFF by removing noise from the detection signal DET. The decoder 154 may decode the detection signal DET. The decoder 154 may perform convolution of the orthogonal code OC received from the encoder 152 and the detection signal DET. The decoder 154 may obtain a valid signal EFF based on the result of convolution. The valid signal EFF may have high accuracy for analysis of the sample 10. The spectroscopic apparatus 100 may determine a chemical composition (eg, a structure of a molecule, a change in a molecule, and a molecular weight, etc.) of the sample 10 based on the effective signal EFF.

10 is a flowchart illustrating the spectral method of FIG. 9 in more detail in the time domain. 10 will be described with reference to FIGS. 4 and 9. Step S210 may correspond to step S110 of FIG. 9, step S220 may correspond to step S120 of FIG. 9, step S230 may correspond to step S130 of FIG. 9, and step S240 may correspond to step S140 of FIG. 9. have. Referring to FIG. 10, a continuous wave signal T10, an optical signal T20, a detection signal T30, and a valid signal T40 may be expressed as a magnitude graph over time.

In step S210, the light source 130 may encode the continuous wave signal T10 as an optical signal T20. The continuous wave signal T10 may correspond to the continuous wave signal CW of FIG. 9, and the optical signal T20 may correspond to the optical signal ENC of FIG. 9. The encoder 152 may match the timing with the light source 130 by clock synchronization. The encoder 152 may provide an orthogonal code OC to the light source 130 based on timing.

The light source 130 may generate the optical signal T20 encoded in a pattern corresponding to the orthogonal code OC from the continuous wave signal T10 based on timing synchronized with the encoder 152. The light source 130 may perform convolution of the orthogonal code OC and the continuous wave signal T10 based on the timing synchronized with the encoder 152. The light source 130 may generate an optical signal T20 based on the result of convolution.

In step S220, the light source 130 may provide an optical signal T20 to the sample 10. In step S230, the detector 140 may detect the detection signal T30 from the sample 10. The detection signal T30 may correspond to the detection signal DET of FIG. 9. The optical signal T20 from the sample 10 may generate molecular vibration of the sample 10 over time. Detection signals T30 such as absorption, scattering, transmission, and reflection may be emitted from the sample 10 based on the molecular vibration of the sample 10.

In step S240, the decoder 154 may extract a valid signal T40 from the detection signal T30. The valid signal T40 may correspond to the valid signal EFF of FIG. 9. The decoder 154 may match the timing with the encoder 152 by clock synchronization. The decoder 154 may receive an orthogonal code OC from the encoder 152 based on timing. The decoder 154 may perform convolution of the orthogonal code OC and the detection signal T30 based on the timing synchronized with the encoder 152. The decoder 154 may obtain a valid signal T40 based on the result of convolution. The signal-to-noise ratio (SNR) of the effective signal T40 may be improved.

FIG. 11 is a flowchart for explaining step S240 of FIG. 10 in more detail. 11 will be described with reference to FIGS. 4 and 10.

The detection signal T30 may include an active component T31 and a noise component T32. The active ingredient T31 may be generated from molecular vibration of the sample 10 over time. The noise component T32 may be generated from factors other than molecular vibration of the sample 10 over time. In FIG. 11, the active component T31 and the noise component T32 are divided, but in an embodiment of the present invention, the active component T31 and the noise component T32 may not be separated from the detection signal T30. have.

In step S241, the decoder 154 may perform convolution of the orthogonal code OC received from the encoder 152 and the active component T31 based on the timing synchronized with the encoder 152. The correlation value between the orthogonal code OC and the active component T31 may be 1. Accordingly, the active ingredient T31 may be converted into the decoded active ingredient T41. Here, the decoded active component T41 may be in a state corresponding to the optical signal T20 before being modulated or encoded. That is, the active ingredient T31 may be restored by the orthogonal code OC.

In step S242, the decoder 154 may perform convolution of the orthogonal code OC received from the encoder 152 and the noise component T32 based on the timing synchronized with the encoder 152. The noise component T32 and the active component T31 may perform convolution with the same orthogonal code OC. A correlation value between the orthogonal code OC and the noise component T32 may be 0. Accordingly, the noise component T32 may be converted into the decoded noise component T42. Here, the decoded noise component T42 may be a signal from which noise is attenuated by the orthogonal code (OC) or noise is partially or completely removed. Consequently, the effective signal T40 may include the decoded active component T41 and the decoded noise component T42. The signal-to-noise ratio of the effective signal T40 may be improved.

12 is a flowchart for explaining in more detail the spectral method of FIG. 9 in the frequency domain. 12 will be described with reference to FIGS. 5 and 9. Step S310 may correspond to step S110 of FIG. 9, step S320 may correspond to step S120 of FIG. 9, step S330 may correspond to step S130 of FIG. 9, and step S340 may correspond to step S140 of FIG. 9. have. Referring to FIG. 12, a continuous wave signal F10, an optical signal F20, a detection signal F30, and an effective signal F40 may be expressed as a spectrum graph of intensity according to wavelength.

In step S310, the light source 130 may encode the continuous wave signal F10 as an optical signal F20. The continuous wave signal F10 may correspond to the continuous wave signal CW of FIG. 9, and the optical signal F20 may correspond to the optical signal ENC of FIG. 9. The encoder 152 may provide an orthogonal code (OC) for spreading a bandwidth to the light source 130. The light source 130 may perform convolution of the orthogonal code OC and the continuous wave signal F10. Due to spectrum-spreading and convolution, the bandwidth of the optical signal F20 may be wider than that of the continuous wave signal F10. The light source 130 may generate the optical signal F20 diffused by the orthogonal code OC based on the result of the convolution. The energy of the optical signal F20 may be the same as the energy of the continuous wave signal F10.

In step S320, the light source 130 may provide an optical signal F20 to the sample 10. In step S330, the detector 140 may detect the detection signal F30 from the sample 10. The detection signal F30 may correspond to the detection signal DET of FIG. 9. The sample 10 may absorb, scatter, transmit, and reflect the optical signal F20 in a specific wavelength region. Molecular vibration of the sample 10 may occur due to the optical signal F20. The detection signals F30 such as absorption, scattering, transmission, etc. may be emitted from the sample 10 based on molecular vibrations of the sample 10 for a specific wavelength region.

In step S340, the decoder 154 may extract a valid signal F40 from the detection signal F30. The valid signal F40 may correspond to the valid signal EFF of FIG. 9. The decoder 154 may perform convolution between the orthogonal code OC received from the encoder 152 and the detection signal F30. By spectrum-despreading and convolution, the bandwidth of the detection signal F30 can be restored. The decoder 154 may obtain a valid signal F40 from the detection signal F30 based on the result of the convolution.

FIG. 13 is a flowchart for describing step S340 of FIG. 12 in more detail. 13 will be described with reference to FIGS. 5 and 11.

As in the time domain, the detection signal F30 may include an active component F31 and a noise component F32. The active component F31 may be generated from molecular vibration of the sample 10 for all or a part of the wavelength region of the optical signal F20. The noise component F32 may be generated from factors other than molecular vibration of the sample 10 for all or a part of the wavelength region of the optical signal F20. In FIG. 13, the active component F31 and the noise component F32 are divided, but in an embodiment of the present invention, the active component F31 and the noise component F32 may not be separated from the detection signal F30. have.

In step S341, the decoder 154 may perform convolution of the orthogonal code OC received from the encoder 152 and the active component F31. A correlation value between the orthogonal code OC and the active component F31 may be 1. Accordingly, the active ingredient F31 may be converted into the decoded active ingredient F41. Here, the decoded active component F41 may be in a state corresponding to the optical signal F20 before being modulated or encoded. That is, the active ingredient F31 may be restored by the orthogonal code OC.

In step S342, the decoder 154 may perform convolution of the orthogonal code OC received from the encoder 152 and the noise component F32 based on the timing synchronized with the encoder 152. The noise component F32 and the active component F31 may perform convolution with the same orthogonal code OC. A correlation value between the orthogonal code OC and the noise component F32 may be 0. Accordingly, the noise component F32 may be converted into the decoded noise component F42. Here, the decoded noise component F42 may be a signal from which noise is attenuated by the orthogonal code (OC) or noise is partially or completely removed. Consequently, the effective signal F40 may include the decoded active component F41 and the decoded noise component F42. The signal-to-noise ratio of the effective signal F40 may be improved.

14 is a flow chart of a spectroscopic method for analyzing a specific substance according to another embodiment of the present invention. 14 will be described with reference to FIG. 5.

The following steps (S410 to S460) of the spectroscopic method for analysis of a specific material of the present invention are performed by the spectroscopic apparatus 100 for analyzing a specific material. Since a specific material is predetermined as the sample 10, the number and wavelength of the light sources 130 used to perform the spectroscopic method are determined according to the specific material. That is, depending on the type of the sample 10, which is a specific material, the number of wavelengths used for analysis may be one or a plurality, and the number of light sources 130 required accordingly may be one or a plurality. Specifically, if the used wavelength is one, one light source 130 may be used, and even if there are a plurality of wavelengths used, one light source 130 may be used, or the light source 130 may be used according to the used wavelength. Each can also be used.

In step S410, the light source 130 may generate one or more optical signals based on one or more orthogonal codes. A code generator (not shown) may generate one or more orthogonal codes. One or more orthogonal codes may all be different from each other or all may be identical to each other. When one or more orthogonal codes are all different from each other, the one or more orthogonal codes may be codes that are orthogonal to each other. That is, cross-correlation values between one or more different orthogonal codes may be 0. The code generator (not shown) may provide an orthogonal code to each of a plurality of channels included in the light source 130. Each of the one or more orthogonal codes generated by the code generator (not shown) may correspond to each of the one or more channels on a one-to-one basis.

In step S420, the light source 130 may provide one or more optical signals generated based on one or more orthogonal codes received from a code generator (not shown) to the sample 10. Each of the one or more channels may generate an optical signal encoded in a pattern corresponding to an orthogonal code received from a code generator (not shown). Each of the one or more channels included in the light source 130 may output an optical signal toward the sample 10. The wavelengths of one or more optical signals may be different from each other.

In step S430, the detector 140 may detect one or more detection signals respectively corresponding to one or more optical signals from the sample 10. One or more optical signals output from the light source 130 toward the sample 10 may be absorbed, transmitted, scattered, and reflected by the sample 10. Sample 10 may emit one or more detection signals based on one or more optical signals absorbed, transmitted, scattered, and reflected in sample 10. The one or more detection signals may be modifications of one or more optical signals. The detector 140 may receive one or more detection signals simultaneously or sequentially.

In step S440, the decoder 154 may perform convolution of one or more detection signals and one or more orthogonal codes. The decoder 154 may perform convolution of one of the one or more detection signals and all of the one or more orthogonal codes. Repetitively, the decoder 154 may perform convolutions on all of one or more orthogonal codes and one or more detection signals. Alternatively, the decoder 154 may perform convolution with only one orthogonal code corresponding to one detection signal on one detection signal among one or more detection signals. The decoder 154 may perform convolutions several times and may perform convolutions simultaneously or sequentially. The decoder 154 may obtain a result of convolution for one or more orthogonal codes and one or more detection signals.

In step S450, the decoder 154 may obtain a valid signal based on the result of the convolutions.

When there are a plurality of orthogonal codes and a plurality of detection signals (when there are a plurality of light sources), the decoder 154 may obtain a valid signal by summing the results of convolutions for a plurality of orthogonal codes and a plurality of detection signals. Obtaining a valid signal by summing the results of convolutions for a plurality of orthogonal codes and a plurality of detection signals will be described in more detail with reference to FIG. 14.

In step S460, the microcontroller 150 checks whether the sample 10 contains harmful components by comparing the valid signal and the normal signal.

The normal signal is a signal indicating when the sample 10 is in a normal state, that is, a state in which harmful components are not included. Accordingly, by comparing the valid signal obtained through the analysis of the sample 10 with a previously stored normal signal, if the valid signal and the normal signal do not match, the corresponding sample 10 contains a harmful component.

Specifically, when a harmful component is included in the sample 10, the detection signal emitted through the sample 10 has a peak value at a specific wavelength. Therefore, when the microcontroller 150 determines that the effective signal extracted from the detection signal has a peak value at the corresponding wavelength and is inconsistent with the normal signal, the communication unit 160 determines that the harmful component is contained in the corresponding sample 10. To the user device.

15 is a more detailed flowchart illustrating steps S440 and S450 of FIG. 14. 15 will be described with reference to FIGS. 5 and 14. In FIG. 15, it is assumed that the light source 130 includes only three channels, that is, the first and third channels 131-133. That is, since three wavelength bands are required for analysis of a specific material, the light source 130 including three channels may be used. Accordingly, the light source 130 may provide the sample 10 with first to third optical signals having different wavelengths or different orthogonal codes based on the first to third orthogonal codes.

The detector 140 may detect first to third detection signals SP11, SP12, and SP13 corresponding to the first to third optical signals from the sample 10. The first to third detection signals SP11, SP12, and SP13 are signals that appear at specific wavelengths W1, W2, and W3, respectively. The first to third decoded detection signals SP21, SP22, and SP23 and the valid signal SP30 are based on the first to third detection signals SP11, SP12, and SP13. In FIG. 15, the first to third detection signals SP11, SP12, and SP13, the first to third decoded detection signals SP21, SP22, and SP23, and the effective signal SP30 are intensities according to wavelength. It can be expressed as a spectral graph of.

In steps S511 to S513, the decoder 154 uses first to third detection signals to decode the first to third detection signals SP11, SP12, and SP13 based on the first to third orthogonal codes. Convolutions of (SP11, SP12, SP13) and first to third orthogonal codes may be performed. In steps S511 to S513, the decoder 154 performs convolution with only one orthogonal code corresponding to one detection signal for one of the first to third detection signals SP11, SP12, and SP13. You can also do it. For example, the decoder 154 may perform a first convolution of the first detection signal SP11 and the first orthogonal code, and the decoder 154 may perform a second detection signal SP12 and a second orthogonal code. The second convolution of may be performed, and the decoder 154 may perform a third convolution of the third detection signal SP13 and the third orthogonal code.

The decoder 154 may generate first to third decoded detection signals SP21, SP22, and SP23 based on the first to third convolutions.

In step S520, the decoder 154 may acquire the valid signal SP30 by summing the first to third decoded detection signals SP21, SP22, and SP23. Referring to FIG. 15, the effective signal SP30 is a signal representing the intensity at the first to third wavelengths W1, W2, and W3.

Accordingly, the spectroscopic apparatus 100 may compare a normal signal and an effective signal only for the corresponding wavelengths W1, W2, and W3 to determine whether or not a harmful substance is included. That is, when the intensity of the effective signal is greater than that of the normal signal at at least one of the first to third wavelengths W1, W2, and W3 (if it has a peak value), the sample 10 contains noxious components. It can be determined to include.

At this time, since the first to third wavelengths W1, W2, and W3 correspond to wavelengths of the first to third optical signals, respectively, the effective signal SP30 may have high reproducibility and accuracy.

Although embodiments of the present invention have been described herein with respect to a method of optically, electrically, and mechanically modulating a light source with an orthogonal code signal, other modulation methods may be used.

The steps of a method or algorithm described in connection with an embodiment of the present invention may be implemented directly in hardware, implemented as a software module executed by hardware, or a combination thereof. Software modules include Random Access Memory (RAM), Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), Flash Memory, hard disk, removable disk, CD-ROM, or It may reside on any type of computer-readable recording medium well known in the art to which the present invention pertains.

In the above, embodiments of the present invention have been described with reference to the accompanying drawings, but those skilled in the art to which the present invention pertains can be implemented in other specific forms without changing the technical spirit or essential features. You will be able to understand. Therefore, the embodiments described above are illustrative in all respects, and should be understood as non-limiting.

10: sample
100: spectroscopic device
110: housing
120: container
130: light source
131: first channel
132: second channel
133: third channel
140: detector
141: array sensor
150: microcontroller
152: encoder
154: decoder
160: communication department

Claims (11)

A housing including a region engageable with the portable device; And
Containers that hold samples of specific substances
Including,
A light source that provides an optical signal of a specific wavelength to the sample to check whether the sample contains harmful components, and
A detector for detecting the detection signal of the specific wavelength emitted from the sample,
A microcontroller that extracts a valid signal from the detection signal, stores a normal signal when the sample does not contain a harmful component, and compares the valid signal with the normal signal to determine whether the sample contains harmful components
Further comprising at least one of,
When the sample contains a harmful component, the detection signal has a peak value at the specific wavelength,
When the microcontroller compares the normal signal and the effective signal, when a peak value appears at a specific wavelength, the microcontroller determines that the sample contains the harmful component. Spectroscopic device for The method of claim 1,
The microcontroller,
An encoder for generating an orthogonal code and encoding the optical signal into a pattern corresponding to the orthogonal code; And
A spectroscopic apparatus for analyzing a specific substance attachable to and detachable from a portable device, comprising a decoder that shares the encoder and the orthogonal code and decodes the detection signal based on a correlation between the orthogonal code and the detection signal. The method of claim 2,
The decoder extracts an effective signal by removing noise included in the detection signal based on the orthogonal code. The method of claim 3,
The orthogonal code is a binary sequence, and the pulse waveform of the optical signal is encoded by line coding according to the orthogonal code. The method of claim 1,
Further comprising a communication unit for communicating with the user device,
The communication unit transmits the result data to the user device when it is determined by the microcontroller whether the sample contains a harmful component, a spectroscopic device for analysis of a specific substance detachable to a portable device. The method of claim 5,
When the communication unit receives sample information to be analyzed from the user device,
The microcontroller determines a wavelength of a light source and the number of light sources required for identification of harmful components based on the sample information. The method of claim 6,
When the number of light sources is plural,
Each optical signal provided by the plurality of light sources is sequentially provided to the sample,
The microcontroller encodes each of the optical signals in a pattern corresponding to a different orthogonal code. The method of claim 7,
When the number of light sources is plural,
The detector detects each detection signal emitted from the sample,
The microcontroller decodes each of the detection signals, obtains a valid signal by summing each of the decoded detection signals, and compares the obtained valid signal with a normal signal. Spectroscopic device for analysis. The method of claim 1,
The detection signal is generated when all or part of the optical signal is absorbed, scattered, transmitted or reflected from the sample. The method of claim 1,
A spectroscopic device for analysis of a specific material detachable to the portable device, further comprising a cover coupled to the upper end of the housing or the container to be opened and closed to block light from the outside. The method of claim 1,
The container is formed detachably to the housing, a spectroscopic device for analysis of a specific substance detachable to the portable device.

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