KR20140100351A - Ring-Shaped Detector for Quantity of Dust, Vacuum Cleaner using of Ring-Shaped Detector, and Quantity of Dust Detection Method - Google Patents

Abstract

Disclosed are a ring-shaped dust quantity detector, a vacuum cleaner, and a method for detecting dust quantity. The dust quantity detector is attached to a tube positioned on a passage, where dust sucked from a predetermined device flows, to measure the quantity of the dust inside the tube, while including: a ring-shaped attaching portion; and a sensor portion having a light-emitting unit prepared on one side of the inner circumference of the attaching portion for emitting light, and a plurality of light-receiving units arranged on the other side of the inner circumference of the attaching portion at a predetermined interval, to output pattern information by measuring the intensity of received light.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a ring-shaped dust detection device, a cleaner, and a dust detection method,

A cleaner, and a dust detection method. More particularly, the present invention relates to a ring dust detecting device, a cleaner, and a dust detecting method for discriminating the amount and kind of dust existing in a pipe through which air containing dust is flowing.

The contents described in this section merely provide background information on the present embodiment and do not constitute the prior art.

The dust detecting device is a device for detecting the amount of dust in the air. If the air flows through a specific pipe, the amount of dust can be measured with respect to the air flowing inside the pipe. The dust meter can be used to measure indoor air quality even in general ventilation / ventilation systems and air conditioners. In this embodiment, an example mainly applied to a vacuum cleaner field is confirmed.

A vacuum cleaner uses a vacuum motor to generate a suction force, sucking dust, etc., and filtering the dust and the like by a filter to clean the surface to be cleaned.

Fig. 1 is a view of a generally used household vacuum cleaner and a robot cleaner.

The cleaner sucks the dust together with the air through the pipe (110). At this time, the amount of dust can be measured by attaching or attaching a dust detecting device to a part (A) of the pipe 110. When measuring the amount of dust, it is helpful to determine whether to continue cleaning by measuring the presence and amount of dust that can not be separated by the eye on the surface to be cleaned.

FIG. 2 is a view showing a main configuration of a conventional dust detecting apparatus.

The light emitting device 210 and the light receiving device 230 are disposed on the tube 110 so as to face each other. Since the dust 210 covers the light emitted from the light emitter 210 as much fine dust 210 exists between the light emitter 210 and the light receiver 230, the light intensity measured by the light receiver 230 is reduced . Therefore, the amount of fine dust 210 can be measured based on the intensity of light measured by the light receiver 230.

However, in this case, only the amount of the fine dust 220 is measured, and the kind of dust can not be measured. Therefore, there is a problem that the light emitting device 210 and the light receiving device 230 must be manufactured together when the tube 110 is manufactured.

Therefore, there is a demand for a dust detecting apparatus capable of discriminating the type of dust and easily attaching the dust to an existing pipe to measure dust amount.

The main object of the present embodiment is to provide a ring-shaped dust detection device capable of solving the problem that the kind of dust can not be grasped by a pair of optical sensors, and collecting scattered waves from various angles to grasp the kind of dust .

According to an aspect of the present invention, there is provided a dust amount detecting apparatus for attaching to a pipe located in a path through which dust sucked by a predetermined apparatus moves, and measuring the amount of dust in the pipe, the apparatus comprising: And a plurality of light receiving portions provided on one side of the inner circumferential surface of the mounting portion to irradiate light and a light receiving portion disposed on the other side of the inner circumferential surface of the mounting portion at predetermined intervals, And a dust detecting unit for detecting the dust.

According to another aspect of the present invention, the attachment portion is located on the outer peripheral surface of the tube, and the outer peripheral surface of the tube is located on the inner peripheral surface of the attachment portion on the inner peripheral surface of the attachment portion. At least one of the light emitting portion and the plurality of light- Wherein the fixing member is provided at a position protruding from the inner circumferential surface of the attaching portion and is fastened to a fastening hole provided in the tube, the fastening hole being opposed to the position of the light emitting portion and the position of the light receiving portion. to provide.

According to another aspect of the present invention, at least one of the light emitting portion and the plurality of light receiving portions is protruded to be equal to the thickness of the tube or longer than the thickness of the tube.

According to another aspect of the present invention, one of the light receiving portions is located on the other side of the inner circumferential surface, and the other light receiving portion excluding the one of the plurality of light receiving portions is located at a position located in one direction of the inner circumferential surface with respect to the other side And a dust detection unit for detecting a dust amount.

According to another aspect of the present invention, the direct pattern information measured at any one of the light receiving portions, which is located on the other side of the inner circumferential surface and directly receives the light emitted from the light emitting portion, and light scattered by the light emitted from the light emitting portion, And a dust analyzer for determining the amount of dust based on the scattering pattern information measured by the remaining light receiving unit and calculating the dust information.

According to another aspect of the present invention, the dust analyzer measures the dust amount based on a difference and a size between the direct pattern information and the scatter pattern information.

According to another aspect of the present invention, when the direct intensity of the direct pattern information is decreased and the scattering intensity of the scatter pattern information is increased, the amount of dust And the amount of the dust is detected to be increased.

According to another aspect of the present invention, there is further provided a dust analyzer for determining the amount of dust and the type of dust based on information on the intensity of light measured by the light-receiving unit to calculate dust information A dust detecting device is provided.

According to another aspect of the present invention, the dust analyzer compares the pattern information with at least any one of the amount of dust and the reference pattern information previously stored for each type of dust, and calculates the dust information. Detection device.

According to another aspect of the present invention, the sensor unit receives the intensity of light, divides the intensity of the light by a predetermined period, and outputs the pattern information, which calculates an average intensity of the light for each predetermined period. And a filtering unit for filtering the dust.

According to an aspect of the present invention, there is provided a control method of a dust amount and type measuring instrument, which is attached or provided in the form of a ring that surrounds a pipe through which air flows, and measures the amount and kind of dust existing in the pipe, A light emitting process for emitting light at an inner end of a ring surrounding the tube; A light intensity measuring step of measuring intensity of the light sensed from the inside of the tube to generate pattern information; A dust amount measuring step of measuring a dust amount by comparing the pattern information with previously stored reference pattern information; A dust type discriminating step of comparing the pattern information with the reference pattern information to measure a dust type; And a dust information display step of displaying information on the dust amount and information on the dust type.

According to an aspect of the present invention, there is provided a method of adjusting the suction intensity of a vacuum cleaner having a light emitter and a light receiver at an inlet, the method comprising the steps of: emitting light at an inner end of a ring surrounding the suction hole; A light intensity measuring step of measuring intensity of the light sensed from the inside of the tube to generate pattern information; A dust type discriminating step of comparing the pattern information with reference pattern information to measure dust type; And a suction power calculation step of calculating an optimal suction power based on the information on the type of dust.

According to another aspect of the present invention, there is provided a dust information measuring method for measuring a dust amount by comparing the pattern information with pre-stored reference pattern information, a dust information displaying process for displaying information on the dust amount and information on the dust type, The present invention also provides a method of adjusting the suction strength of a vacuum cleaner.

According to another aspect of the present invention, there is provided a method of adjusting a suction strength of a vacuum cleaner, the method comprising the steps of: controlling a strength of a motor based on information about the appropriate suction force.

According to the present embodiment, scattering waves obtained by projecting light onto dust can be collected and analyzed in various directions, so that the kind and amount of dust can be grasped.

On the other hand, the intensity of the suction force of the vacuum cleaner can be adjusted based on the type of dust analyzed.

Fig. 1 is a view of a generally used household vacuum cleaner and a robot cleaner.
FIG. 2 is a view showing a main configuration of a conventional dust detecting apparatus.
3 is a diagram for explaining the concept of a brightness pattern used in an embodiment of the present invention.
4 is a front view showing a structure of a dust detecting apparatus according to an embodiment of the present invention.
5 is a graph showing intensity of light of each sensor measured for rice and sugar in a dust measuring device according to an embodiment of the present invention.
6 is a configuration diagram of a dust and dust type measuring apparatus according to an embodiment of the present invention.
7 is a configuration diagram of a dust analyzer according to an embodiment of the present invention.
8 is a flowchart illustrating a method of measuring a dust amount and a dust type according to an embodiment of the present invention.

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

It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected to or connected to the other component, It should be understood that an element may be "connected," "coupled," or "connected."

3 is a diagram for explaining the concept of a brightness pattern used in an embodiment of the present invention.

The brightness patterns generated when light is irradiated on the fine dust 210 and the coarse dust 310 are different depending on the size of the dust and the surface condition (roughness, shape, reflectance, etc.).

FIG. 3 (a) is a view showing a brightness pattern on a surface located at a distance in a direction opposite to a point where light is irradiated on the basis of fine particles when light is incident on fine particles having a size similar to the wavelength of light. When light is irradiated on particles of similar size to the wavelength of light, the light scatters. At this time, when the size of the scattered light is represented by a continuous pattern according to the position, a brightness pattern is obtained, and the fine dust brightness pattern 320 is measured.

FIG. 3 (b) is a view showing a brightness pattern on a surface located at a distance in a direction opposite to a point where light is irradiated with respect to large-sized particles when light is incident on particles having a size larger than the wavelength of light. When light is irradiated on a particle that is much larger than the wavelength of light, the light diffuses irregularly. At this time, if the magnitude of irregularly reflected light is represented by a continuous pattern according to each position, a brightness pattern is obtained. A coarse dust brightness pattern 330 is measured. At this time, the fine dust brightness pattern 320 and the coarse dust brightness pattern 330 are different from each other because the diffraction ratio of light and the curvature of the reflecting surface are different according to the size of the particle, Pattern is detected. In addition, scattering or diffusing ratios and patterns vary depending on the surface state, so that different patterns are detected depending on the surface state.

Therefore, since different brightness patterns are detected according to the surface state and size of the dust, the type of dust can be determined by detecting the brightness pattern.

Also, when light is irradiated, the portion of the path of the light is blocked by the dust, so that the more the dust, the less intensity of the detected light. However, since the light scattered by the dust is measured in the part of the path of the light, the intensity of the detected light increases as the dust increases, and the intensity of the light decreases when the light intensity exceeds a predetermined value. Therefore, it is possible to calculate the dust amount by storing the brightness pattern of the dust amount according to the stored light intensity and comparing the information about the intensity of the input light.

In Fig. 3, the detection of the brightness pattern on the opposite side of the direction in which the light is irradiated is taken as an example. However, since the irradiated light can be scattered or reflected by the dust particles, it is also possible to detect the brightness pattern in an annular shape according to the arrangement shape of the light receiving portion 420 provided in the embodiment of the present invention.

4 is a front view showing a structure of a dust detecting apparatus according to an embodiment of the present invention.

4 (a) is a cross-sectional view of the dust detecting device and the pipe in a state where the dust detecting device is bound to the pipe. The dust detecting apparatus includes an attaching portion 430 and a sensor portion, and the sensor portion includes a light emitting portion 410 and a light receiving portion 420. The attaching portion 430 corresponding to the skeleton may be attached to surround the circumference of the tube 110 and may be provided as a part of the tube 110. Therefore, the inner shape of the attachment portion 430 may be a ring shape, which is a general cross-sectional shape of the pipe 110. The inner shape of the attachment portion 430 may vary depending on the shape of the pipe 110 to which the dust detection device is attached. The sensor unit includes a light emitting unit 410 and a light receiving unit 420 provided on the inner surface of the attachment unit. The light emitting portion 410 is provided at one inner side of the attachment portion 430 to emit light. The direction of the light emitting portion 410 is adjusted so that light is directed toward the other inner side of the attachment portion 430 through the inside of the attachment portion 430.

At least two light receiving portions 420 are provided in predetermined regions around the inner other end toward which the light is directed. The light receiving unit 420 measures the intensity of light sensed from the inside of the attachment unit 430. If the direction of the light emitting part 410 is directed to the center of the attachment part 430, the intensity of the light measured by the light receiving part 420 is measured symmetrically, so that the light receiving part 420 provided in one direction from the other side Can be omitted. Information corresponding to the brightness pattern described in FIG. 3 can be obtained based on the pattern information of the light collected by the light receiving unit 420. In FIG. 4, the light receiving unit 420 is disposed at predetermined angular intervals around the center of the centrifuge, but the present invention is not limited thereto.

The dust detector should be attached to the tube 110 and measure the amount of dust by projecting the light. Therefore, it is preferable that the dust detecting device is attached to the pipe 110 having a hole through which light can pass or a region through which light can pass. The dust detecting device may include a light receiving unit 420 and a light emitting unit 410 protruding in the direction of the inner surface of the attaching unit 430. The light receiving unit 420 and the light emitting unit 410, Can be attached to the hole through which the light is transmitted so as to function as a fastening part. At this time, the protruding size of the light receiving portion 420 and the light emitting portion 410 may be equal to or longer than the thickness of the tube 110, and may be configured to be sealed by using transparent rubber or the like. With this structure, the amount of dust can be detected without fear that the hole through which the light is transmitted is blocked or covered.

4 (b) is a front view of the dust detecting device having nine light receiving portions 420. As shown in Fig. The quantity and arrangement of the light receiving section 420 need not be limited to the quantity and arrangement of the light receiving section 420 shown in FIG. 4A. It should be regarded as a kind of the embodiment of the present invention as long as the light receiving portion 420 is arranged by defining a considerable region around the irradiation region of the light emitting portion 410 in which the strongest light is detected.

5 is a graph showing intensity of light of each sensor measured for rice and sugar in a dust measuring device according to an embodiment of the present invention.

FIG. 4B and FIG. 4C are graphs showing the values of the luminance measured by the light receiving unit 420 of the dust measuring apparatus shown in FIG. 4A. The letters A, B, C, D and E in the graphs A, B, C, D and E in FIG. 5A, the graphs in FIG. 5B and FIG. The value indicates the position of the measured sensor.

5B is a graph of sensor values measured when rice passes through a tube. Because rice is smooth and large in size, it has a large amount of total reflection.

Figure 5c is a graph of sensor values measured when the sugar passes through the tube. Since the surface of sugar is rough and small in size, the amount of reflected light as a whole is small and the intensity of light is evenly distributed among the light receiving portions 420.

When the brightness pattern is measured for the same amount of particles based on these measured values, it can be seen that the larger the particle size, the larger the deviation of the brightness pattern. The intensity of light measured at the light receiving portion A directly receiving the light of the light emitting portion 410 and the intensity of light measured at the adjacent light receiving portion B of the light receiving portion A directly receiving the light of the light emitting portion 410, And the intensity of light of the light source is large. Therefore, it is possible to determine the thickness of the particle through the deviation of the measured brightness pattern. Particularly, the intensity of light measured at the light receiving portion B adjacent to the light intensity measured at the light receiving portion A directly receiving the light of the light emitting portion 410 The thickness of the particles can be determined based on whether the ratio between the intensities of the particles is greater than a predetermined ratio.

In other words, as described in FIG. 2, the characteristic brightness patterns are detected in the plurality of light-receiving units 420 according to the size and surface state of the foreign matter passing through the pipe 110. Therefore, the size and surface state of the foreign object can be specified through the brightness pattern, and the kind of the foreign object can be determined based on the size and surface state of the foreign object. As the amount of foreign matter increases, the amount of light absorbed by the foreign substance increases, so the density (amount) of the foreign matter can be determined according to the size of the brightness pattern.

6 is a configuration diagram of a dust and dust type measuring apparatus according to an embodiment of the present invention.

The dust and dust type measuring device includes a dust sensor 610, a dust analyzer 630 and a dust indicator 640. In addition, the dust sensor unit 610 may further include a filtering unit 620 to remove the noise contained in the measurement value of the dust sensor unit 610. When the dust sensor 610 is used to implement the vacuum cleaner, The adjustment unit 650 may further be included. The description of the parts, such as motors capable of controlling the intensity and the filters for filtering the dust, necessary for implementing the vacuum cleaner will be obvious to those skilled in the art, and detailed description will be omitted, as no further explanation is required.

The dust sensor unit 610 is the same as the dust measuring apparatus shown in Figs. And is attached or provided to the tube 110 to project light and measure the intensity of the projected light and scattered light with two or more photodetectors and outputs the measured value as pattern information. The pattern information is output for each receiver, and the output values for each receiver can be distinguished. Hereinafter, a plurality of sets of output values for each light receiver are referred to as pattern information. The dust sensor unit 610 may further include a filtering unit 620 to calculate and output an average value of the pattern information.

The filtering unit 620 may divide the pattern information into pattern information of a preset period or a preset number of times and output an average value of each of the segmented pattern information. In other words, it can be implemented as a kind of low-pass filter that removes noise by converting transient noise to an average value. The method of implementing this can be easily derived through a clock generator and an integrator, and there are various commercially available techniques, and thus a detailed description thereof will be omitted.

Of course, the amount of dust may be displayed using the pattern information output from the dust sensor unit 610 without filtering.

The dust analyzer 630 analyzes pattern information input from the dust sensor 610 or the filtering unit 620 to analyze the amount and type of dust. At this time, dust type information is calculated by comparing with previously stored pattern information information for each type of dust, and dust amount information is calculated based on the size of the pattern information. In the light receiving part 420 positioned on the straight line where the light of the light emitting part 410 is emitted, the amount of dust is smaller as the more dust is present, In the light receiving part 420, as the amount of dust increases, the amount of light received gradually increases due to the scattering of the emitted light, and the amount of light received decreases rather than a certain amount of dust. Therefore, the dust amount can be calculated through the dust amount on the pattern and the light receiving amount of each light receiving portion 420.

The dust amount display unit 640 receives at least one of dust type information and dust amount information and displays it. It is not always necessary to indicate the dust type itself when displaying the dust type information, and it may be implemented to indicate the size of the dust and the surface state of the dust.

The intensity control unit 650 is a module that can be additionally included when it is applied to implement a device for sending a dust and a dust type measuring device to a moving air such as a cleaner. Depending on the surface condition of the dust and the size of the dust, the speed of the air that can be carried and carried is different. The surface condition is smooth and the larger the size of the dust, the more difficult it is carried by the air flow. Therefore, the minimum air velocity or the optimum air velocity at which dust can be carried and carried can be calculated based on the type of dust that has determined the type of dust based on the surface state and the size of the dust. The intensity controller 650 receives the dust type information and calculates the information related to the optimum air speed according to the dust type information. The motor and the like can be controlled based on the information about the optimum air velocity.

7 is a configuration diagram of a dust analyzer according to an embodiment of the present invention.

6, the dust analyzer 630 receives a signal regarding the intensity of light from the filtering unit 620 or the dust sensor unit 610 and outputs the dust to the dust indicator 640 and the intensity controller 650, Type information, and dust amount information.

The dust analysis unit 630 includes a dust amount calculation unit 710, a dust type determination unit 720, and a storage unit 730. The dust amount calculation unit 710 calculates the dust amount based on the overall size of the pattern information, and the dust type determination unit 720 determines the dust type based on the pattern or shape generated by the pattern information for each light receiving unit. In this embodiment, a typical method for implementing this will be described as an example. However, the scope of the present invention should not be limited to the embodiments but should be interpreted based on the claims and the ideas of the invention.

The dust amount calculation unit 710 compares the input pattern information with previously stored reference pattern information and calculates a dust amount. At this time, the average value of the pattern information of each sensor can be compared with the stored reference pattern information. If the reference pattern information is stored as the pattern information of each sensor, the reference pattern information can also be converted into an average value and compared.

The dust type discrimination unit 720 discriminates the kind of dust based on the stored reference pattern information of the input pattern information, the graph form of the pattern information by each light receiver, or the similarity of patterns generated by the pattern information by each light receiver. The method for determining the degree of similarity is as follows.

If the ratio of the pattern information to the light receiving device is defined as a pattern, the dust type discriminating section 720 calculates the ratio of the pattern information to the light receiving device and compares the ratio with the light receiving device ratio of the previously stored reference pattern information, The type of dust can be determined.

The storage unit 730 stores the pattern information measured according to the type and amount of dust as reference pattern information. The reference pattern information may also be stored as information on the luminous intensity stored for each photodetector, such as pattern information.

8 is a flowchart illustrating a method of measuring a dust amount and a dust type according to an embodiment of the present invention.

First, light is emitted from the inner end of the ring surrounding the tube 110 (S810). The light can be infrared with a wavelength of the length corresponding to the mode of dust length. The ring surrounding the tube 110 may be provided as part of the tube 110.

After step S810, the intensity of light sensed from inside the tube is measured (S820). The light emitted in S810 is directed to the other inner side of the ring through the inside of the ring. The intensity of light emitted from the inside of the tube 110 is measured using a plurality of photodetectors provided in predetermined areas near the other inner end of the ring to detect light scattered by the dust inside the ring to generate pattern information do.

The generated pattern information of the light is filtered (S830). If the size of the generated pattern information is too small to analyze, it is possible to amplify the pattern information and filter the noise information. If the size of the dust is large, the dust passes through the inside of the tube 110 in a segmented manner, so that the pattern information of the light changes according to the flow of the dust. Therefore, in order to obtain the pattern information of the light obtained from the dust, it is necessary to extract information irrespective of the dust flow. In order to obtain an average value of light intensity obtained from the dust, an average value calculated by averaging pattern information of light measured for a preset period or a predetermined number of times may be used. And generates the average value as the filtering information. This provides information that excludes the effects of dust flow.

The generated filtering information is compared with previously stored reference pattern information to measure the amount of dust (S840). The previously stored reference pattern information is pattern information measured according to the type and amount of dust, and may be calculated through calculation such as simulation, but may also be an experimentally measured value. The filtering information or the pattern information is compared with the reference pattern information to specify the nearest reference pattern information, and the type and amount of the dust corresponding to the reference pattern information are measured. In the light receiving part 420 positioned on the straight line where the light of the light emitting part 410 is emitted, the amount of dust is smaller as the more dust is present, In the light receiving unit 420, as the amount of dust increases, the amount of light received increases due to scattering of the emitted light, and the amount of light received decreases rather than the threshold. Therefore, the dust amount can be calculated through the dust amount on the pattern and the light receiving amount of each light receiving portion 420.

The filtering information generated in step S830 is compared with previously stored reference pattern information to measure the kind of dust (S850). The ratio of the measured values to each light receiver and the reflectance are determined according to the state of the dust surface or the size of the dust. Therefore, the filtering information is measured for each kind of dust, stored as reference pattern information, and the inputted filtering information is compared with the reference pattern information to determine the kind of dust corresponding to the reference pattern information of the most similar type. In case of a cleaner, the suction power of the cleaner can be calculated based on the judgment information on the type of dust because the degree of suction is different depending on the type of dust.

Information on the dust amount calculated in steps S840 and S850 and information on the dust type are displayed (S860). The dust amount calculated in S840 and the dust type determined in S850 can be displayed to the user.

Although it is described in FIG. 8 that steps S810 to S860 are sequentially executed, this is merely an exemplary description of the technical idea of the embodiment of the present invention, and it should be understood that the technical knowledge in the technical field to which the embodiment of the present invention belongs Those skilled in the art will appreciate that various modifications and adaptations may be made to those skilled in the art without departing from the essential characteristics of one embodiment of the present invention or by executing one or more of steps S810 through S850 in parallel And therefore, it is not limited to the time-series order in Fig.

The foregoing description is merely illustrative of the technical idea of the present embodiment, and various modifications and changes may be made to those skilled in the art without departing from the essential characteristics of the embodiments. Therefore, the present embodiments are to be construed as illustrative rather than restrictive, and the scope of the technical idea of the present embodiment is not limited by these embodiments. The scope of protection of the present embodiment should be construed according to the following claims, and all technical ideas within the scope of equivalents thereof should be construed as being included in the scope of the present invention.

110: tube 210: fine dust
310: coarse dust 320: fine dust brightness pattern
330: coarse dust brightness pattern 410: light emitter
420: Receiver 430: Attachment part
610: dust sensor unit 620: signal amplification unit
630: dust analyzer 640: dust indicator
650: intensity control unit 710: dust calculation unit
720: dust type discrimination unit 730: storage unit

Claims (14)

1. A dust detection device for detecting a dust amount inside a pipe attached to a pipe located on a path through which dust sucked by a predetermined device moves,
A ring-shaped attachment portion; And
A light emitting unit provided on one side of the inner circumferential surface of the attaching unit to irradiate light,
And a plurality of light receiving units arranged at predetermined intervals on the other side of the inner circumferential surface of the attaching portion, the sensor unit measuring the intensity of the sensed light and outputting pattern information,
Wherein the dust detecting unit detects the dust. The method according to claim 1,
Wherein the attachment portion is located on an outer circumferential surface of the tube and an outer circumferential surface of the tube is positioned on an inner circumferential surface of the attachment portion on an inner circumferential surface of the attachment portion,
At least one of the light emitting portion and the plurality of light receiving portions,
A plurality of protrusions provided on an inner circumferential surface of the attaching portion and fastened to the fastening holes provided in the tube,
Wherein the fastening hole is provided at a position opposite to a position of the light emitting unit and a position of the light receiving unit. 3. The method of claim 2,
At least one of the light emitting portion and the plurality of light receiving portions,
Wherein the protrusion protrudes to a thickness equal to or greater than the thickness of the tube. The method according to claim 1,
Wherein one of the light receiving portions is located on the other side of the inner circumferential surface and the other light receiving portions of the plurality of light receiving portions except the one of the light receiving portions are disposed at a position located in one direction of the inner circumferential surface with respect to the other side. 5. The method of claim 4,
Wherein the direct pattern information measured at any one of the light receiving portions located on the other side of the inner circumferential surface and directly receiving the light emitted from the light emitting portion and the scatter pattern information measured by the remaining light receiving portion receiving light scattered by the light emitting portion A dust analyzer for determining the amount of dust based on the dust information and calculating dust information
Further comprising: a dust collecting device for collecting dust. 6. The method of claim 5,
The dust analyzer may include:
Wherein the dust amount measuring unit measures the dust amount based on a difference and a size between the direct pattern information and the scattering pattern information. The method according to claim 6,
The dust analyzer may include:
Wherein the controller determines that the amount of dust increases when the direct intensity of the direct pattern information decreases and the scattering intensity of the scatter pattern information increases, collecting the direct pattern information and the scatter pattern information for a predetermined period of time, Detection device. The method according to claim 1,
A dust analyzing unit for determining the amount of dust and the kind of dust based on the information about the intensity of the light measured by the light receiving unit and calculating dust information,
Further comprising: a dust collecting device for collecting dust. 9. The method of claim 8,
The dust analyzer may include:
And the dust information is calculated by comparing the pattern information with at least one of the amount of dust and the reference pattern information previously stored for each type of dust. The method according to claim 1,
The sensor unit includes:
A filtering unit that receives the intensity of light and divides the intensity of light by a predetermined period unit to calculate an average value of light intensity of the predetermined period unit,
Wherein the dust detecting unit detects the dust. A method of controlling a dust amount and a type measuring instrument which is attached or provided in the form of a ring that surrounds a pipe through which air flows, and measures the amount and type of dust present in the tube,
A light emitting process for emitting light at an inner end of the ring surrounding the tube;
A light intensity measuring step of measuring intensity of the light sensed from the inside of the tube to generate pattern information;
A dust amount measuring step of measuring a dust amount by comparing the pattern information with previously stored reference pattern information;
A dust type discriminating step of comparing the pattern information with the reference pattern information to measure a dust type; And
A dust information display step of displaying information on the dust amount and information on the dust type
And measuring the amount of dust. A method of adjusting the suction strength of a vacuum cleaner having a light emitting device and a light receiving device at a suction port to measure a dust amount,
A light emitting process for emitting light at an inner end of a ring surrounding the suction port;
A light intensity measuring step of measuring intensity of the light sensed from the inside of the tube to generate pattern information;
A dust type discriminating step of comparing the pattern information with reference pattern information to measure dust type; And
A suction force calculating process for calculating an appropriate suction force based on the information on the type of dust
And controlling the suction force of the vacuum cleaner. 13. The method of claim 12,
A dust amount measuring process for measuring the dust amount by comparing the pattern information with previously stored reference pattern information, and
A dust information display step of displaying information on the dust amount and information on the dust type
The method of claim 1, further comprising the step of adjusting the suction strength of the vacuum cleaner. 13. The method of claim 12,
A control process of adjusting the intensity of the motor based on the information about the appropriate suction force
The method of claim 1, further comprising the step of adjusting the suction strength of the vacuum cleaner.

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