JP2007322340A - Fittings, determination method of condensation occurrence, and determination system of condensation occurrence - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To specify with high accuracy generation spot where condensation is occurring. <P>SOLUTION: This determination system 1 of condensation generation for determining whether condensation is occurring on the surface of a determination object (fittings, such as a window, a floor, a ceiling or a wall) 2 is equipped with a condensation detection part 7 provided with a pattern having oblique lines 8a at least on a part of the surface of the determination object 2, comprising a water-repellency treated part to which water-repellency treatment has been applied and a water-repellency untreated part to which the water-repellency treatment has not been applied; an imaging means 10 for acquiring image information of the condensation detection part 7; and a control means 11 for determining whether condensation is generated on the condensation detection part 7, based on the image information acquired by the imaging means 10, and outputting condensation information based on the determination result. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to joinery (windows, floors, ceilings, walls, etc.), a method for determining the occurrence of condensation, and a determination system for the occurrence of condensation, and is particularly suitable for detecting the occurrence of condensation from a remote location and taking measures to suppress the occurrence of condensation. The present invention relates to a joinery, a method for determining the occurrence of condensation, and a determination system for the occurrence of condensation.

  Condensation that occurs on the surfaces of buildings, such as windows, floors, ceilings, and walls, can cause corrosion, mold, etc., so take measures such as quickly identifying where condensation occurs and operating the air conditioning system. Therefore, it is necessary to suppress the occurrence of further condensation.

Conventionally, as a method for identifying the location where condensation occurs, a method in which a resident of a building identifies the location by visual observation, a method of automatically identifying using a temperature detector, a water leakage detector, or the like (for example, Patent Document 1) 2), and any one of these methods is adopted depending on the size of the building.
Japanese Utility Model Publication No. 7-32558 JP-A-8-77474

  However, in the method of visually identifying the location where condensation occurs, it is difficult to identify depending on the location where condensation occurs, it is difficult to determine whether it is a drop of water or condensation due to rain or snow, or the window is blinded. In such a case, depending on the open / closed state of the blinds, it may be difficult to confirm the occurrence of condensation.

  In addition, in buildings such as office buildings, residents who have visually observed the occurrence of condensation contact the building managers with the information, and the managers etc. take measures such as operating the air conditioning system. Since the occurrence is suppressed, the response may be delayed due to a delay in communication or the absence of an administrator or the like.

  Furthermore, when the location where condensation occurs is determined by the temperature detector, the temperature at the location where the temperature detector is installed depends on the orientation, etc., so the occurrence of condensation cannot be detected with high accuracy, resulting in false detection. This often causes the air conditioning system to be activated, and wastes energy.

  In addition, when the occurrence of condensation is identified by the leak detector, it takes time for the leak detector to detect condensation, making it difficult to operate the air conditioning system at the beginning of the occurrence of condensation. Problems such as corrosion due to corrosion and generation of mold cannot be solved completely.

  The present invention has been made in view of the conventional problems as described above, and is a joinery that can identify the occurrence of condensation with high accuracy and at the initial stage of occurrence of condensation, a method for determining the occurrence of condensation, and the occurrence of condensation. An object of the present invention is to provide a determination system.

The present invention employs the following means in order to solve the above problems.
That is, in the invention according to claim 1, at least a part of the dew condensation detection unit including a water repellent treatment unit subjected to water repellent treatment and a non-water repellent treatment unit not subjected to water repellent treatment is provided on the surface. It is provided in the pattern which has the slanting line inclined with respect to, and it is configured so that condensation occurs only in the non-water-repellent treatment part of the condensation detection part.

 According to the joinery according to the present invention, dew condensation occurs only in the non-water-repellent treatment part of the dew condensation detection part on the surface of the joinery. Therefore, when the dew condensation occurs, the color of the non-water-repellent treatment part changes and the dew condensation occurs. A pattern having an oblique line that is inclined at least partially with respect to the horizontal surface emerges in the detection unit. For this reason, for example, even when the joinery is observed through the blind, the pattern can be recognized as an oblique pattern interrupted by the blind, so that the recognition accuracy of condensation is increased. In addition, outdoors, which can be seen through the glass of joinery, are often composed of horizontal or vertical lines such as buildings and plants, and since there are few oblique straight lines, it is possible to prevent erroneous recognition of condensation.

  The invention according to claim 2 is the joinery according to claim 1, wherein the non-water-repellent treatment part is coated with a water-absorbing colorant that changes color by absorbing water.

  According to the joinery according to the present invention, when dew condensation occurs in the non-water-repellent treatment portion, the color of the non-water-repellent treatment portion changes more clearly.

  In the invention according to claim 3, the surface of the determination target is subjected to water repellent treatment with a pattern having a diagonal line inclined at least partially relative to the horizontal, whereby the surface of the determination target is subjected to water repellent treatment. A dew condensation detection unit comprising a water repellent treatment unit and a non-water repellent treatment unit that has not been subjected to water repellent treatment, and whether or not dew condensation has occurred in the dew condensation detection unit based on a photographed image of the dew condensation detection unit It is characterized in that determination is made.

 According to the method for determining the occurrence of condensation according to the present invention, condensation occurs only in the non-water-repellent treatment part of the condensation detection part on the surface of the object to be judged. The color changes, and at least a part of the pattern having a diagonal line inclined with respect to the horizontal surface appears in the dew condensation detection unit. Based on the image information of this pattern, whether or not dew condensation has occurred in the dew condensation detection unit. Judgment can be made.

  The invention according to claim 4 is the method for determining the occurrence of dew condensation according to claim 3, wherein the non-water-repellent treatment part is coated with a water-absorbing colorant that changes color by absorbing water. Features.

  According to the method for determining the occurrence of dew condensation according to the present invention, when dew condensation occurs in the non-water-repellent treatment part, the color of the non-water-repellent treatment part changes more clearly.

  The invention according to claim 5 is the method for determining the occurrence of condensation according to claim 3 or 4, wherein the photographed image is obtained by processing infrared rays reflected or emitted from the condensation detection unit. It is characterized by being.

 According to the method for determining the occurrence of dew condensation according to the present invention, when dew condensation occurs in the dew condensation detection unit regardless of day or night, the pattern can be acquired as a clear image.

  The invention according to claim 6 is a determination system for occurrence of dew condensation that determines whether or not dew condensation has occurred on the surface of the determination object, and at least partly horizontally with respect to the surface of the determination object. A dew condensation detection unit composed of a water repellent treatment unit provided with a pattern having an inclined oblique line and a non-water repellent treatment unit not subjected to water repellent treatment, and image information of the dew condensation detection unit An imaging unit to be acquired, and a control unit that determines whether or not dew condensation has occurred in the dew condensation detection unit based on image information acquired by the imaging unit and outputs dew condensation information based on the determination result. It is characterized by.

  According to the determination system for the occurrence of dew condensation according to the present invention, the dew condensation occurs only in the non-water repellent treatment part of the dew condensation detection part on the surface of the judgment object. The color changes, and at least part of the pattern having a diagonal line inclined with respect to the horizontal surface appears on the dew condensation detection unit. This pattern is acquired as image information by the imaging unit, and the image information acquired by the imaging unit is included in the image information. Based on this, it is determined whether or not condensation has occurred in the condensation detection unit by the control means, and condensation information based on the determination result is output.

  The invention according to claim 7 is the dew condensation determination system according to claim 6, wherein the non-water-repellent treatment part is coated with a water-absorbing colorant that changes color by absorbing water. Features.

  According to the determination system for the occurrence of dew condensation according to the present invention, when dew condensation occurs in the non-water repellent treatment part, the color of the non-water repellent treatment part changes more clearly.

  The invention according to claim 8 is the dew condensation determination system according to claim 6 or 7, wherein the imaging means for acquiring image information of the dew condensation detection unit is an infrared ray reflected or emitted from the dew condensation detection unit. The image information of the dew condensation detection part is acquired by processing.

 According to the dew condensation generation determination system according to the present invention, when dew condensation occurs in the dew condensation detection unit regardless of day or night, the pattern can be acquired as a clear image.

As described above, according to the joinery of the present invention, dew condensation occurs only in the non-water repellent treatment part of the dew condensation detection part on the surface of the joinery. Therefore, when the dew condensation occurs, the color of the non-water repellent treatment part Will change, and at least part of the pattern with diagonal lines that are inclined with respect to the horizontal surface will appear on the dew condensation detection unit, and whether or not dew condensation has occurred is detected by detecting whether this pattern is raised or not. Judgment can be made. Therefore, it is possible to reliably detect the occurrence of condensation regardless of the type of fittings (windows, floors, ceilings, walls, etc.) and the parts of the fittings (upper, lower, inner surface, outer surface, etc.). It is possible to reliably detect the occurrence of condensation without misidentification.
Further, when dew condensation occurs in the non-water repellent part, the color of the non-water repellent part changes more clearly.

Furthermore, according to the method for determining the occurrence of dew condensation according to the present invention, since dew condensation occurs only in the non-water repellent treatment part of the dew condensation detection part on the surface of the judgment object, the non-water repellent treatment part is generated when dew condensation occurs. As a result, the pattern having a slanting line inclined at least partially with respect to the horizontal surface appears on the dew condensation detection unit. Therefore, it is possible to determine whether or not condensation has occurred in the dew condensation detection unit based on the image information obtained from the dew condensation detection unit on the surface of the determination target. Therefore, it is possible to reliably detect the occurrence of condensation regardless of the type of judgment object (window, floor, ceiling, wall, etc.) and the part of the judgment object (upper, lower, inner surface, outer surface, etc.) Since it is possible to reliably detect the occurrence of condensation without misidentifying it as water droplets due to snow or snow, it is possible to take measures to suppress condensation at the early stage of condensation. Can be reliably prevented.
Furthermore, when dew condensation occurs in the non-water-repellent treated portion, the color of the non-water-repellent treated portion changes more clearly.
Furthermore, when condensation occurs in the condensation detection unit regardless of day or night, the pattern can be acquired as a clear image.

Furthermore, according to the dew condensation occurrence determination system of the present invention, since dew condensation occurs only in the non-water repellent treatment part of the dew condensation detection part on the surface of the determination object, the non-water repellent treatment part is generated when dew condensation occurs. As a result, the pattern having a slanting line inclined at least partially with respect to the horizontal surface appears on the dew condensation detection unit. Therefore, the condensation detection unit on the surface of the determination target is acquired as image information, and based on the acquired image information, it is determined whether or not condensation has occurred in the condensation detection unit, and based on the determination result. Condensation information will be output. As a result, it is possible to reliably detect the occurrence of condensation regardless of the type of judgment object (joint such as windows, floors, ceilings, walls, etc.) and the part of the judgment object (upper, lower, inner surface, outer surface, etc.) Since it is possible to reliably detect the occurrence of condensation without misidentifying it as water droplets due to rain, snow, etc., it is possible to take measures to suppress condensation early in the occurrence of condensation, and the object to be judged will be corroded and mold will be generated. Can be surely prevented.
Furthermore, when dew condensation occurs in the non-water-repellent treated portion, the color of the non-water-repellent treated portion changes more clearly.
Furthermore, when condensation occurs in the condensation detection unit regardless of day or night, the pattern can be acquired as a clear image.

Hereinafter, an embodiment of the present invention shown in the drawings will be described.
FIG. 1 shows an embodiment of a dew condensation determination system according to the present invention. This dew condensation determination system 1 is a fixture such as a window, a floor, a ceiling, or a wall of a building that is a determination target. Condensation that occurs on the surface of No. 2 is remotely detected, and the operation of the air conditioning control device 22 and the like that controls the occurrence of condensation is controlled based on information on the presence or absence of condensation.

  That is, the dew condensation occurrence determination system 1 includes a dew condensation detection unit 7 provided on the surface (outer side surface or inner side surface) of the fitting 2, an imaging unit 10 that captures the state of the dew condensation detection unit 7 as image information, and an imaging unit 10. And a control means 11 for processing the image information captured by the camera, determining whether or not condensation has occurred in the condensation detection unit 7, and outputting the condensation information based on the determination result. In the present embodiment, a double glass window 2 with a blind composed of an outer glass 3, an inner glass 5, and a blind 6 provided between both glasses 3 and 5 is used as the fitting 2.

  As shown in FIGS. 2 and 3, the dew condensation detection unit 7 is provided on the inner side surface 4 of the outer glass 3 of the double-glazed window 2 with a blind, and the entire inner side surface 4 is subjected to water repellency treatment. The water treatment unit 8 and the non-water repellent treatment unit 9 that has not been subjected to the water repellent treatment are provided at least partially in a pattern having an oblique line 8a inclined with respect to the horizontal.

  Examples of the water repellent used in the water repellent treatment of the water repellent treatment portion 8 include coating agents such as a silicone coating agent and a fluorine coating agent. However, the present invention is not limited to these, as long as predetermined water repellency can be obtained.

  As a pattern of the dew condensation detection unit 7, as shown in FIG. 2, a strip-shaped non-water-repellent treatment unit 9 is formed at predetermined intervals over the entire inner surface 4 of the outer glass 3 at an angle of about 45 °. Are provided in parallel with each other, and a portion other than the non-water-repellent treatment portion 9 is formed as a water-repellent treatment portion 8, and as shown in FIG. Examples include a pattern in which the water treatment unit 9 is provided in a lattice pattern at an angle of about 45 °, and a portion other than the non-water repellent treatment unit 9 is used as the water repellent treatment unit 8. However, the present invention is not limited to these, and any pattern may be used as long as it has at least part of the oblique line 8a inclined with respect to the horizontal and can clearly distinguish the water-repellent treatment portion 8 and the non-water-repellent treatment portion 9.

  By providing a dew condensation detection unit 7 composed of a water repellent treatment unit 8 and a non-water repellent treatment unit 9 on the entire inner side surface 4 of the outer glass 3, when dew condensation occurs on the inner side surface 4 of the outer glass 3, Condensation adheres only to the water-repellent treatment part 9, the non-water-repellent treatment part 9 becomes cloudy and the color changes, and the water-repellent treatment part 8 and the non-water-repellent treatment part 9 have different colors, and condensation detection A pattern having diagonal lines 8a inclined with respect to the horizontal is formed in part 7 as shown in FIGS. Therefore, it is possible to detect the presence or absence of condensation by capturing the pattern of the condensation detection unit 7 as image information.

  The non-water-repellent treatment unit 9 may be coated with a water-absorbing colorant that changes its color by absorbing water. By coating such a water-absorbing colorant on the non-water-repellent treatment part 9, when condensation occurs in the non-water-repellent treatment part 9, it has a diagonal line 8a inclined more clearly at least partially relative to the horizontal. A pattern can be captured as image information. Examples of the water-absorbing colorant include cobalt chloride (blue when anhydrous, pale red when containing water), silica gel, iron chloride, copper sulfate, nickel sulfate, potassium permanganate, chromic acid temporary, iron sulfate, and the like. It is done.

  As the imaging means 10, a dew condensation detection unit 7 composed of a water repellent treatment unit 8 and a non-water repellent treatment unit 9 is captured as an image, and a dew condensation detection unit is generated by a change in color of the non-water repellent treatment unit 9 when dew condensation occurs. 7 can be used as long as it can recognize a pattern having an oblique line 8a inclined at least partially with respect to the horizontal, such as a commercially available digital video camera. In this case, it is more preferable to use a digital video camera having a function capable of acquiring an image even in a dark place such as at night by irradiating infrared rays, that is, a so-called night mode function.

  The imaging means 10 is preferably installed at a position where the entire dew condensation detection unit 7 on the inner side surface 4 of the outer glass 3 can be captured. In the present embodiment, the entire double glass window 2 with a blind is captured. It can be installed on the ceiling surface 25.

  The control unit 11 receives the image information of the dew condensation detection unit 7 transmitted from the imaging unit 10 and processes the received image information to determine whether or not dew condensation has occurred in the dew condensation detection unit 7. The image processing unit 12 and the condensation information based on the determination result from the image processing unit 12 are output, and the illumination of the room where the double-glazed window 2 with the blind is installed based on the determination result is attached to the imaging means 10. Central control unit for controlling a lighting control device 20 for controlling the operation of a lighting device such as a flash, a blind control device 21 for adjusting the opening degree of the blind 6, and an air conditioning control device 22 for controlling the humidity and temperature of the room 13.

  Whether or not condensation has occurred in the condensation detection unit 7 of the outer glass 3 depends on whether or not the image information from the imaging means 10 shows a pattern having a diagonal line 8a inclined at least partially relative to the horizontal. Determined. That is, when no condensation occurs in the condensation detection unit 7, no pattern is formed on the condensation detection unit 7, but when condensation occurs, the color of the non-water-repellent treatment unit 9 changes. Since the color of the water repellent processing unit 8 does not change, a pattern having a diagonal line 8a inclined at least partially with respect to the horizontal is formed in the dew condensation detection unit 7. Therefore, it is determined that condensation occurs when the imaging means 10 captures this pattern as an image.

  The condensation information output from the control means 11 may be displayed on a display means such as a display. Based on the dew condensation information output from the control means 11, the operation of the air conditioning control device 22 is controlled to adjust the humidity and temperature, and when dew condensation occurs, the occurrence of further dew condensation is suppressed, Corrosion and mold are prevented from being generated on the double-glazed window 2 with blinds and the housing side supporting the window.

 In the figure, 14 is an on / off indicator that displays the ON / OFF state of the dew condensation occurrence determination system, 15 is a digital display that displays the temperature around the double glass window, and 16 is an analog display that displays humidity. It is a vessel.

Next, the operation of the dew condensation occurrence determination system 1 according to the present embodiment will be described.
As shown in FIG. 4, when an image acquisition processing command is output from the control means 11 (S1), the illuminance for image acquisition is confirmed (S2), and the opening degree of the blind 6 for image acquisition. Is confirmed (S3). Here, when the illuminance is insufficient, the operation of the illumination control device 20 is controlled by the control means 11, and the illumination of the room or the flash and the emission of infrared rays are controlled (S3 → S4), and the appropriate illuminance is obtained. The image information is acquired in the adjusted state. Further, when the blind 6 is closed, the operation of the blind control device 21 is controlled, and the opening degree of the blind 6 is adjusted to be half open so that an image of the dew condensation detection unit 7 can be acquired (S5 → S6). Image information is acquired in the state. Then, after the image information is acquired, an illumination turn-off command and a blind close command are output, and the presence or absence of condensation is determined based on the acquired image information (S7). Based on the determination value, the operation of the air conditioning control device 22 is controlled (S8).

In the present embodiment, when determining the occurrence of condensation by acquiring image information, the pattern due to the occurrence of condensation and the noise due to the outline of the blind 6, the reflection of lighting, etc., the outline of the building outside the window, etc. In order to make a distinction, the oblique line 8a inclined with respect to the horizontal of the pattern due to the occurrence of condensation is captured, and whether or not the oblique line 8a inclined with respect to the horizontal exists in the image is calculated by commercially available image processing software. Yes.
For this reason, for example, even when the fitting 2 is observed through the blind 6, the pattern can be recognized as an oblique pattern interrupted by the blind 6, so that the recognition accuracy of dew condensation is increased. In addition, outdoors that can be seen through the glass of the joinery 2 are often composed of horizontal or vertical lines such as buildings and plants, and since there are few oblique straight lines, it is possible to prevent erroneous recognition of condensation.

  5 to 8 show an image capturing the state of condensation occurrence under various conditions, and the result of calculating the oblique line 8a of the pattern of condensation occurrence by performing binarization processing on the image with image processing software. .

  FIG. 5 is an image obtained under the conditions of lighting conditions; daytime, blind state; shielding (small), (a) is an image of the state of dew condensation captured by the imaging means 10, and (b) is (a). ) Image after contrast improvement, (c) is an image after contour extraction is performed on the image of (b), and (d) is 2 for the image of (c). It is an image after performing the value processing. From the image of (d), it was possible to extract a diagonal line 8a having an inclination of 231.99 °.

  6A and 6B are images obtained under the conditions of lighting conditions; daytime, blind state; none, (a) is an image of the state of dew condensation captured by the imaging means 10, and (b) is an image of (a). (C) is an image after contour extraction is performed on the image of (b), and (d) is a binarization process on the image of (c). It is an image after performing. From the image of (d), it was possible to extract a diagonal line 8a having an inclination of 234.75 °.

  FIG. 7 is an image obtained under the conditions of lighting conditions; nighttime, blind state; none, (a) is an image of the state of dew condensation captured by the imaging means 10, and (b) is an image of (a). On the other hand, an image after contrast improvement, (c) is an image after contour extraction is performed on the image of (b), and (d) is a binarization process on the image of (c). It is an image after going. (D) A line segment with an inclination of 182.02 ° could be extracted from the image. This line segment is due to the blind 6.

FIG. 8 is an image obtained under illumination conditions; night mode, blind state; shielding (medium), (a) is an image of the occurrence of condensation captured by the imaging means 10, and (b) is an image of (a). An image after contrast improvement is performed on the image, (c) is an image after contour extraction is performed on the image of (b), and (d) is binarized with respect to the image of (c). It is an image after processing. From the image of (d), it was possible to extract a diagonal line 8a having an inclination of 227.62 °.
The night mode is a function installed in some digital video cameras, and can increase the sensitivity of the sensor even in a dark scene such as at night so that it can be projected brightly.

  From these results, it is possible to accurately capture a pattern indicating the state of occurrence of condensation during the day. In addition, it can be seen that a pattern indicating the state of dew condensation can be accurately captured by using the night mode even in a dark place such as at night. Therefore, it is possible to continue monitoring whether or not condensation occurs regardless of day or night.

  In the above description, the case where the dew condensation occurrence determination system 1 according to the present invention is applied to the double-glazed window 2 with a blind has been described, but it may be applied to a single glass, a ceiling, a floor, a wall, or the like. In addition, the present invention may be applied to other locations where dew condensation occurs, and in this case, the same effects can be obtained.

  In this embodiment, using a camera-integrated digital video (model name: FV-M30) manufactured by Canon and using the night mode, it is possible to determine the dew condensation such as lighting reflected on the window surface of the joinery. In addition, it was possible to remove unnecessary noise and capture the occurrence of condensation with high accuracy.

It is explanatory drawing which showed the whole one Embodiment of the determination system of dew condensation generation by this invention. It is the front view which showed an example of the pattern of a dew condensation detection part. It is the front view which showed the other example of the pattern of the dew condensation detection part. It is the flowchart which showed operation | movement of the determination system of dew condensation generation | occurrence | production of FIG. It is explanatory drawing which shows the relationship between the image of the state of dew condensation generation | occurrence | production, and the image which carried out the binarization process of the image, Comprising: It is explanatory drawing about the relationship between both images in illumination conditions (daytime) and a blind state (small shielding). . It is explanatory drawing which shows the relationship between the image of the state of dew condensation generation, and the image which carried out the binarization process of the image, Comprising: It is explanatory drawing about the relationship between both images in illumination conditions (daytime) and a blind state (none). It is explanatory drawing which shows the relationship between the image of the state of dew condensation generation, and the image which carried out the binarization process of the image, Comprising: It is explanatory drawing about the relationship between both images in illumination conditions (nighttime) and a blind state (blocking). It is explanatory drawing which shows the relationship between the image of the state of dew condensation generation, and the image which carried out the binarization process of the image, Comprising: It is explanatory drawing about the relationship between both images in illumination conditions (night mode) and a blind state (blocking). .

Explanation of symbols

1 Judgment system for dew condensation 2 Judgment object (joint)
DESCRIPTION OF SYMBOLS 3 Outer glass 4 Inner side surface 5 Inner glass 6 Blind 7 Condensation detection part 8 Water repellent processing part 9 Non-water-repellent processing part 10 Imaging means 11 Control means 12 Image processing part 13 Central monitoring control part 14 On-off display 15 Digital display 16 Analog display 20 Lighting control device 21 Blind control device 22 Air conditioning control device 25 Ceiling surface

Claims (8)

  Condensation detection unit consisting of a water-repellent treated part and a non-water-repellent non-water-repellent part on the surface is a pattern having a diagonal line inclined at least partially relative to the horizontal. A fitting that is provided and configured so that condensation occurs only in the non-water-repellent treatment part of the condensation detection part.   The joinery according to claim 1, wherein the non-water-repellent treatment portion is coated with a water-absorbing colorant that changes color by absorbing water.   A water-repellent treatment part and a water-repellent treatment are carried out on the surface of the judgment object by subjecting the surface of the judgment object to a water-repellent treatment with a pattern having a diagonal line inclined at least partially relative to the horizontal. A dew condensation detection unit comprising a non-water-repellent treatment unit that has not been processed is provided, and it is determined whether or not dew condensation has occurred in the dew condensation detection unit based on a photographed image of the dew condensation detection unit. A method for determining the occurrence of condensation.   4. The method for determining the occurrence of dew condensation according to claim 3, wherein the non-water-repellent treatment part is coated with a water-absorbing colorant that changes its color by absorbing water.   The method for determining the occurrence of dew condensation according to claim 3 or 4, wherein the photographed image is obtained by processing infrared rays reflected or emitted from the dew condensation detection unit. A determination system for the occurrence of condensation that determines whether or not condensation has occurred on the surface of a determination object,
A water-repellent treated portion and a non-water-repellent treated portion not subjected to water-repellent treatment, which are provided in a pattern having a diagonal line inclined at least partially with respect to the horizontal, on the surface of the determination object Determining whether or not dew condensation has occurred in the dew condensation detection unit based on the image information acquired by the dew detection unit, the image capturing unit for acquiring the image information of the dew detection unit, A dew generation determination system comprising: a control unit that outputs dew condensation information based on the determination result.   The system for determining the occurrence of dew condensation according to claim 6, wherein the non-water-repellent treatment part is coated with a water-absorbing colorant that changes its color by absorbing water. The imaging means for acquiring image information of the dew condensation detection unit acquires image information of the dew condensation detection unit by processing infrared rays reflected or emitted from the dew condensation detection unit. 8. A system for determining the occurrence of dew condensation according to 7.