JP7318322B2 - Deterioration detection device - Google Patents

Description

The present invention relates to a deterioration detection device.

In the technology related to deterioration detection, a corrosion sensor is installed in a tower, which is a structure such as a wind power generator. ), covered the plurality of conductive parts provided on the surface of the substrate of the corrosion sensor via the insulating part, and applied to the structural members (such as generators, etc.) over the outer surface of the tower of the structure It is known to apply the same coating film as the coating film (see, for example, Patent Document 1).

JP 2010-133748 A

However, in the technique disclosed in Patent Document 1, no consideration is given to detecting deterioration of multiple types of materials used in products. When selecting the installation location in the product for each sample made of multiple types of materials, various factors such as the location where each material is used in the product, the characteristics of the heat-generating part of the product, and the installation environment of the product must be considered. It is complicated. In addition, when coating films (specimens) and corrosion sensors are installed at multiple locations on a product, the wiring of the corrosion sensors tends to be complicated. Therefore, it is not easy to design and install the deterioration detection device when applying it to a product.

The present invention has been made to solve such problems. The object is to provide a deterioration detection device that can detect deterioration of multiple types of materials used in products and that facilitates design and installation work when applying the deterioration detection device to products. .

A deterioration detection device according to the present invention is provided in a deterioration detection area set in a portion of a product exposed to the outside air, and is made of the same material as one of the constituent materials of the product; a second sample provided in the deterioration detection area and made of a material different from the first sample among constituent materials of the product; and a specific physical quantity of the first sample provided in the product. a first detection unit that detects; a second detection unit that is provided in the product and detects a specific physical quantity of the second sample; and a physical quantity that is provided in the product and detected by the first detection unit. and a deterioration detection unit that detects deterioration of the second sample using the physical quantity detected by the second detection unit, and a deterioration detection unit that detects deterioration of the first sample using The area is located downstream of a heat-generating portion of the product in the airflow generated during operation of the product .

According to the deterioration detection device according to the present invention, it is possible to detect the deterioration of a plurality of types of materials used in the product, and the design and installation work when applying the deterioration detection device to the product are easy. play.

1 is a block diagram showing the overall configuration of a deterioration detection device according to Embodiment 1 of the present invention; FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows typically the structure of the illuminating device which is an example of the target product of the deterioration detection apparatus which concerns on Embodiment 1 of this invention. FIG. 4 is a diagram schematically showing a first example of a sample and a detection section of the deterioration detection device according to Embodiment 1 of the present invention; It is a figure which shows typically the sample and the 2nd example of the detection part of the deterioration detection apparatus based on Embodiment 1 of this invention. FIG. 10 is a diagram schematically showing a third example of the sample and detection unit of the deterioration detection device according to Embodiment 1 of the present invention; FIG. 10 is a diagram schematically showing a fourth example of the sample and detection unit of the deterioration detection device according to Embodiment 1 of the present invention; FIG. 10 is a diagram schematically showing a fifth example of the sample and the detection section of the deterioration detection device according to Embodiment 1 of the present invention;

Embodiments for carrying out the present invention will be described with reference to the accompanying drawings. In each figure, the same or corresponding parts are denoted by the same reference numerals, and overlapping descriptions are appropriately simplified or omitted. The present invention is not limited to the following embodiments, and can be modified in various ways without departing from the scope of the present invention.

Embodiment 1.
Embodiment 1 of the present invention will be described with reference to FIGS. 1 to 7. FIG. FIG. 1 is a block diagram showing the overall configuration of the deterioration detection device. FIG. 2 is a diagram schematically showing the configuration of a lighting device, which is an example of a target product of the deterioration detection device. FIG. 3 is a diagram schematically showing a first example of the sample and detection unit of the deterioration detection device. FIG. 4 is a diagram schematically showing a second example of the sample and detection unit of the deterioration detection device. FIG. 5 is a diagram schematically showing a third example of the sample and detection unit of the deterioration detection device. FIG. 6 is a diagram schematically showing a fourth example of the sample and detection unit of the deterioration detection device. FIG. 7 is a diagram schematically showing a fifth example of the sample and detector of the deterioration detection device.

The deterioration detection device according to this embodiment detects deterioration of materials used in electrical products. As shown in FIG. 1, a deterioration detection area 10 is set in a product 1 whose material deterioration is to be detected by the deterioration detection device. The deterioration detection area 10 is set at a portion of the product 1 that is exposed to the outside air.

A first sample 11 and a second sample 12 are provided in the deterioration detection area 10 . That is, the areas where the first sample 11 and the second sample 12 are provided are substantially the same deterioration detection area 10 . The first sample 11 and the second sample 12 are each made of the same material as one of the constituent materials of the product 1 . However, the first sample 11 and the second sample 12 are different materials. That is, the first sample 11 is made of the same material as one of the constituent materials of the product 1 . The second sample 12 is made of a material different from the first sample 11 among the constituent materials of the product 1 .

Next, an example in which the product 1 is a lighting device 100 will be described with reference to FIG. The illumination device 100 is, for example, an LED floodlight installed in a high place such as a ceiling. The illumination device 100 includes a light source section 101 and a power supply section 104 . The light source unit 101 is provided with a light source (not shown), an LED (light emitting diode) in this example, a reflector, a light source cover, and the like. A frame portion 102 is provided above the light source portion 101 . A heat sink 103 is provided on the frame portion 102 . The heat sink 103 is for efficiently cooling the heat generated in the light source section 101 .

The power supply section 104 is arranged further above the frame section 102 . The power supply unit 104 includes a power supply circuit (not shown) for supplying power to the light source unit 101 . The power supply circuit is housed inside the housing 110 of the power supply unit 104 . An arm portion 105 is connected to the frame portion 102 . The arm part 105 is for supporting the lighting device 100 at the installation location. The lighting device 100 is fixed to an installation location such as a ceiling by an arm portion 105 .

The description will be continued with reference to FIG. 1 again. The product 1 is provided with a first detection section 21 and a second detection section 22 . The first detector 21 detects specific physical quantities of the first sample 11 . The second detector 22 detects specific physical quantities of the second sample 12 . Hereinafter, when the first sample 11 and the second sample 12 are not particularly distinguished, they are simply referred to as "samples". Further, when the first detection section 21 and the second detection section 22 are not particularly distinguished, they are simply referred to as "detection section".

The aforementioned specific physical quantity detected by each detection unit is determined in advance according to the type of sample to be detected. Next, specific configuration examples of the sample and the detection unit will be described with reference to FIGS. 3 to 7. FIG. In the following description, the lighting device 100 described above will be taken as an example of the product 1 .

First, FIG. 3 shows a first example of a sample and a detection section. In this example, silver plating 72 is provided as a sample. The silver plating 72 is an example of the same material as that used in the circuit board of the lighting device 100 as the product 1, the LED of the light source section 101, and the like.

Moreover, in this first example, an electric resistance meter 81 is provided as a detection unit. A through hole 111 is formed in the degradation detection area 10 in the housing 110 of the lighting device 100 as the product 1 . A plating base 71 plated with silver 72 is arranged inside the housing 110 in which the through hole 111 is formed. The silver plating 72 is provided on the through hole 111 side of the plating base 71 . In this manner, the silver plating 72 as a sample is exposed to the outside air through the through-holes 111 . The electrical resistance meter 81, which is a detection unit, detects the electrical resistance of the silver plating 72, which is the sample, as the above-described specific physical quantity of the sample.

Next, FIG. 4 shows a second example of the sample and detector. In this example, a resin 73 is provided as a sample. The resin 73 is, for example, rubber or the like. The resin 73 is an example of the same material as that used in the packing or the like of the lighting device 100 that is the product 1 .

Moreover, in this second example, a hardness meter 82 is provided as a detection unit. As in the first example described above, a through hole 111 is formed in the deterioration detection area 10 in the housing 110 of the lighting device 100 that is the product 1 . A resin 73 is arranged inside the housing 110 in which the through hole 111 is formed. Thus, the sample resin 73 is exposed to the outside air through the through-hole 111 . A hardness meter 82, which is a detection unit, detects the hardness of the resin 73, which is a sample, as the above-described specific physical quantity of the sample. The hardness meter 82 is arranged on the opposite side of the through hole 111 with the resin 73 interposed therebetween. The hardness meter 82 particularly detects the hardness of the portion of the resin 73 facing the through hole 111 .

FIG. 5 shows a third example of the sample and detector. In this example, a metal 74 is provided as a sample. The metal 74 is, for example, stainless steel, iron, or the like. The metal 74 is an example of the same material as that used for the housing 110, the frame portion 102, the arm portion 105, the screws, etc. of the illumination device 100, which is the product 1. FIG.

Moreover, in this third example, an ultrasonic thickness gauge 83 is provided as a detection unit. A through hole 111 is formed in the deterioration detection area 10 in the housing 110 of the lighting device 100 as the product 1, as in the first example and the like. A metal 74 is arranged inside the housing 110 in which the through hole 111 is formed. Thus, the sample metal 74 is exposed to the outside air through the through-hole 111 . The ultrasonic thickness gauge 83, which is a detection unit, detects the thickness of the metal 74, which is the sample, as the above-described specific physical quantity of the sample. The ultrasonic thickness gauge 83 is arranged on the opposite side of the through hole 111 with the metal 74 interposed therebetween. The ultrasonic thickness gauge 83 detects the thickness of the portion of the metal 74 that faces the through hole 111 .

FIG. 6 shows a fourth example of the sample and detector. In this example, the sample is the wall portion of the housing 110 itself. Further, in this example, an ultrasonic thickness gauge 83 is provided as a detection section, as in the third example described above. In this fourth example, the through hole 111 is not formed in the housing 110 unlike the examples described so far. However, the housing 110 itself in the deterioration detection area 10 is exposed to the outside air. Then, the ultrasonic thickness gauge 83, which is a detection unit, detects the thickness of the wall of the housing 110 in the deterioration detection area 10 as the specific physical quantity of the sample.

FIG. 7 shows a fifth example of the sample and detector. In this example, a transparent material 75 is provided as a sample. The transparent material 75 is, for example, glass, polycarbonate, or the like. The transparent material 75 is a material having a property of transmitting light of a specific wavelength such as visible light. The transparent material 75 is an example of the same material as that used for the light source cover of the light source section 101 of the lighting device 100 as the product 1 .

In addition, in this fifth example, a light-emitting portion 84 and a light-receiving portion 85 are provided as the detection portion. A through hole 111 is formed in the deterioration detection area 10 in the housing 110 of the lighting device 100 as the product 1, as in the first example and the like. A transparent material 75 is arranged inside the housing 110 in which the through hole 111 is formed. Thus, the transparent material 75 as a sample is exposed to the outside air through the through-holes 111 .

The light-emitting portion 84 and the light-receiving portion 85, which are the detection portions, are arranged so as to sandwich a portion of the transparent material 75 facing the through-hole 111 . At this time, when viewed from the transparent material 75 , the light-emitting portion 84 is arranged on the side opposite to the through-hole 111 , and the light-receiving portion 85 is arranged on the same side as the through-hole 111 . The light emitting unit 84 irradiates the transparent material 75 with light containing the aforementioned specific wavelength. The light receiving section 85 receives the light of the specific wavelength that has passed through the transparent material 75 . The light-emitting unit 84 and the light-receiving unit 85, which are the detection units configured as described above, detect the light transmittance of the transparent material 75, which is the sample, as the above-described specific physical quantity of the sample. The light-emitting portion 84 and the light-receiving portion 85 detect the light transmittance of the portion of the transparent material 75 facing the through hole 111 .

The description will be continued with reference to FIG. 1 again. The product 1 is further provided with a deterioration detection unit 30 . The deterioration detection unit 30 detects deterioration of the first sample 11 using the physical quantity detected by the first detection unit 21 . The deterioration detection unit 30 also detects deterioration of the second sample 12 using the physical quantity detected by the second detection unit 22 .

In the first example of the sample and the detection unit shown in FIG. Deterioration of the silver plating 72 is detected. For example, the deterioration detection unit 30 detects deterioration of the silver plating 72 when the electrical resistance of the silver plating 72 detected by the electrical resistance meter 81 is greater than or equal to a preset reference value. By doing so, it is possible to detect that the silver plating 72 has deteriorated due to oxidation or the like and that the electrical resistance has increased.

Further, in the second example of the sample and the detection unit shown in FIG. 73 deterioration is detected. For example, the deterioration detection unit 30 detects deterioration of the resin 73 when the hardness of the resin 73 detected by the hardness meter 82 is greater than or equal to a preset reference value. By doing so, it can be detected that the resin 73 has lost necessary flexibility due to deterioration.

In the third example of the sample and the detection unit shown in FIG. Deterioration of a certain metal 74 is detected. For example, the deterioration detection unit 30 detects deterioration of the metal 74 when the thickness of the metal 74 detected by the ultrasonic thickness gauge 83 is equal to or less than a preset reference value. By doing so, it can be detected that the metal 74 has been corroded and deteriorated to be thinned.

In the fourth example of the sample and the detection unit shown in FIG. 6, the deterioration detection unit 30 uses the thickness of the wall of the housing 110, which is the physical quantity detected by the ultrasonic thickness gauge 83, which is the detection unit. to detect deterioration of the housing 110, which is a sample. For example, the deterioration detection unit 30 detects deterioration of the housing 110 when the thickness of the wall of the housing 110 detected by the ultrasonic thickness gauge 83 is equal to or less than a preset reference value. By doing so, it is possible to detect that the housing 110 has corroded and deteriorated and has been thinned.

In the fifth example of the sample and the detection unit shown in FIG. 7, the deterioration detection unit 30 detects the light transmittance of the transparent material 75, which is the physical quantity detected by the light emitting unit 84 and the light receiving unit 85, which are the detection units. is used to detect deterioration of the transparent material 75, which is a sample. For example, the deterioration detection unit 30 detects deterioration of the transparent material 75 when the light transmittance of the transparent material 75 detected by the light emitting unit 84 and the light receiving unit 85 is equal to or less than a preset reference value. By doing so, it can be detected that the transparent material 75 has become opaque due to deterioration.

According to the deterioration detection device for the product 1 configured as described above, the first sample 11, the second sample 12, the first detection unit 21, the second detection unit 22, and the deterioration detection unit 30 are provided. , the deterioration of multiple types of materials used in the product 1 can be detected. At that time, by arranging the first sample 11 and the second sample 12 made of a plurality of types of materials in substantially the same deterioration detection area 10, each of the deterioration detection samples in the product 1 Since it is not necessary to select an installation location and it is only necessary to select one deterioration detection area 10, it is easy to select a location for installing a deterioration detection sample. Therefore, it is easy to prevent deterioration from being overlooked by setting the deterioration detection area 10 in the product 1 in a severe environment (such as high temperature and high humidity) in which the deterioration of the material is most likely to be accelerated. Further, the first detection unit 21 and the second detection unit 22, in which the first sample 11 and the second sample 12 made of a plurality of types of materials are arranged in substantially the same deterioration detection area 10, are deteriorated. Wiring for connecting the detection unit 30 is facilitated. As described above, it is possible to detect the deterioration of a plurality of types of materials used in the product 1, and the design and installation work when applying the deterioration detection device to the product 1 is easy.

The deterioration detection area 10 is preferably arranged downstream of the heat-generating portion of the product 1 in the airflow generated during the operation of the product 1 . For example, when the product 1 is the lighting device 100 described above, the heat sink 103 is a heat generating portion that generates heat while the product 1 is operating, that is, while the light source portion 101 is lit. During lighting of the light source unit 101, an upward air current is generated from the heat sink 103 as indicated by the arrow in FIG.

Therefore, as shown in the figure, the deterioration detection area 10 is arranged below the power source section 104 . By doing so, the deterioration detection area 10 can be arranged on the downstream side of the updraft generated in the heat sink 103 while the light source unit 101 is lit. Further, the deterioration detection area 10 can be exposed to the outside and placed in an environment where deterioration is likely to be accelerated such that the product 1 is exposed to a high temperature while the light source unit 101 is on. For this reason, overlooking deterioration of the product 1 can be suppressed.

Further, the deterioration detection area 10 may be arranged at the same location on the product 1 for the same type of product 1 . By doing so, the conditions other than the installation environment for detecting the deterioration of the first sample 11 and the second sample 12 can be made the same for the same type of product 1 . Therefore, in the event of a failure of the product 1 or the like, by referring to the data stored in the storage unit 40, which will be described later, it is possible to support appropriate evaluation of the influence of the installation environment on the product 1 of the same type. is due to the installation environment of the product 1, or whether it is common to the products 1 of the same type as the product 1 rather than the installation environment.

As shown in FIG. 1 , in the configuration example described here, the product 1 is further provided with a storage unit 40 , a notification unit 50 and a transmission unit 60 . The notification unit 50 notifies the detection result of the deterioration detection unit 30 . The deterioration detection unit 30 outputs a first deterioration detection signal when deterioration of the first sample 11 is detected. Further, the deterioration detection unit 30 outputs a second deterioration detection signal when deterioration of the second sample 12 is detected. When at least one of the first deterioration detection signal and the second deterioration detection signal is output from the deterioration detection unit 30, the notification unit 50 notifies the surrounding people that the deterioration of the material constituting the product 1 has been detected. to be notified. The notification unit 50 includes a speaker for audibly notifying that the deterioration of the material constituting the product 1 has been detected, an LED for notifying with light, or the like.

Note that the notification unit 50 may change the manner of notification according to whether the signal output from the deterioration detection unit 30 is the first deterioration detection signal or the second deterioration detection signal. . For example, depending on whether deterioration of the first sample 11 is detected or deterioration of the second sample 12 is detected, the sound to be played by the speaker may be changed, or the LED to be lit may be changed.

The transmission section 60 transmits the detection result of the deterioration detection section 30 to the outside of the product 1 . When at least one of the first deterioration detection signal and the second deterioration detection signal is output from the deterioration detection unit 30, the transmission unit 60 receives the first deterioration detection signal and the second deterioration detection signal output from the deterioration detection unit 30. One or both of the deterioration detection signals are transmitted to, for example, the terminal device 2 outside the product 1 . The terminal device 2 is provided so as to be communicable with the transmitting section 60 . The communication method between the terminal device 2 and the transmission unit 60 is not particularly limited, and may be either a wired method or a wireless method. The terminal device 2 is specifically, for example, a PC installed in a management room or the like of the facility where the product 1 is installed, a tablet terminal, or a smart phone possessed by an administrator of the facility.

By providing such a transmission section 60 , when the deterioration detection section 30 outputs the first deterioration detection signal and the second deterioration detection signal, these signals can be transmitted to the outside of the product 1 . Therefore, it is possible to monitor the deterioration of the materials used in the product 1 from a control room or the like remote from the product 1 .

The storage unit 40 stores the physical quantity detected by the first detection unit 21 and the physical quantity detected by the second detection unit 22 . The storage unit 40 may further store the output dates and times of the first deterioration detection signal and the second deterioration detection signal output from the deterioration detection unit 30 . By providing such a storage unit 40 , it is possible to obtain information on the degree of progress of deterioration of the materials forming the product 1 from the storage unit 40 of the product 1 when a failure occurs in the product 1 or the like. Therefore, it is possible to assist in identifying the cause of the failure of the product 1 or the like.

The first detection unit 21, the second detection unit 22, the deterioration detection unit 30, the storage unit 40, the notification unit 50, and the transmission unit 60 described above are provided in the product 1, such as a circuit board. This circuit board may include a microcomputer or processor and memory. A part or all of the functions of each of these units may be realized by causing a processor to execute a process according to a program stored in the memory.

In the above description, the case where two samples and two detection units are provided in the deterioration detection area 10 has been described. However, this number is not limited to two. That is, the number of samples and detection units provided in the deterioration detection area 10 may be three or more.

Moreover, the product 1 is not limited to the lighting device 100 described here. Other examples of products 1 to be subjected to deterioration detection include various electric appliances such as an outdoor unit of an air conditioner, a ventilator, a refrigerator, and a control panel.

REFERENCE SIGNS LIST 1 product 2 terminal device 10 deterioration detection area 11 first sample 12 second sample 21 first detection unit 22 second detection unit 30 deterioration detection unit 40 storage unit 50 notification unit 60 transmission unit 71 plating base 72 silver Plating 73 Resin 74 Metal 75 Transparent material 81 Electric resistance meter 82 Hardness meter 83 Ultrasonic thickness gauge 84 Light emitting part 85 Light receiving part 100 Lighting device 101 Light source part 102 Frame part 103 Heat sink 104 Power supply part 105 Arm part 110 Housing 111 Through hole

Claims (4)

A first sample provided in a deterioration detection area set in a portion of the product exposed to the outside air and made of the same material as one of the constituent materials of the product;
a second sample provided in the deterioration detection area and made of a material different from the first sample among constituent materials of the product;
a first detection unit provided in the product for detecting a specific physical quantity of the first sample;
a second detection unit provided in the product for detecting a specific physical quantity of the second sample;
The physical quantity detected by the first detection unit provided in the product is used to detect deterioration of the first sample, and the physical quantity detected by the second detection unit is used to detect deterioration of the second sample. and a deterioration detection unit that detects deterioration ,
The deterioration detection device, wherein the deterioration detection area is arranged downstream of a heat-generating portion of the product in an air current generated during operation of the product . 2. The deterioration detection device according to claim 1 , further comprising a storage unit provided in said product and storing the physical quantity detected by said first detection unit and the physical quantity detected by said second detection unit. 3. The deterioration detection device according to claim 1 , further comprising a transmission section provided in said product for transmitting detection results of said deterioration detection section to the outside of said product. 4. The deterioration detection device according to any one of claims 1 to 3 , further comprising a notification unit provided in said product for notifying the detection result of said deterioration detection unit.

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