CN108226221A - A kind of heat transfer coefficient detection heating unit and heat transfer coefficient detection device - Google Patents
A kind of heat transfer coefficient detection heating unit and heat transfer coefficient detection device Download PDFInfo
- Publication number
- CN108226221A CN108226221A CN201810229901.6A CN201810229901A CN108226221A CN 108226221 A CN108226221 A CN 108226221A CN 201810229901 A CN201810229901 A CN 201810229901A CN 108226221 A CN108226221 A CN 108226221A
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- heat transfer
- heating unit
- transfer coefficient
- babinet
- coefficient detection
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 53
- 238000012546 transfer Methods 0.000 title claims abstract description 53
- 238000001514 detection method Methods 0.000 title claims abstract description 47
- 239000010409 thin film Substances 0.000 claims description 22
- 238000012544 monitoring process Methods 0.000 claims description 18
- 239000000523 sample Substances 0.000 claims description 13
- 239000012774 insulation material Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims 1
- 238000004378 air conditioning Methods 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/18—Investigating or analyzing materials by the use of thermal means by investigating thermal conductivity
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The present invention provides a kind of heat transfer coefficient detection heating unit and heat transfer coefficient detection device, wherein heat transfer coefficient detection heating unit includes babinet, including box-like body and the cavity being formed in inside the box-like body, the openend of the box-like body and the inner surface of building enclosure to be detected are tightly connected；Heating unit, in the babinet.When carrying out heat transfer coefficient detection to architectural exterior-protecting construction using heat-flow meter method, the inner surface of the openend of babinet and building enclosure to be detected is tightly connected, by heating unit to being heated in babinet, make the temperature in babinet higher than 10 DEG C of temperature on the outside of building enclosure or more, you can be detected, it is simple in structure, it does not need to carry air-conditioning at the scene, greatly improve work efficiency, it is not required that interior is heated, it is easy to operate, it can be all detected in various seasons.
Description
Technical field
The present invention relates to heat transfer coefficient detection technique fields, and in particular to a kind of heat transfer coefficient detection heating unit and heat transfer
Coefficient detection device.
Background technology
Major part of the wall as architectural exterior-protecting construction, wall heat transfer coefficient detection are important one of detection project.
The Coefficient K of wall is to characterize wall (level containing possessive construction) under the conditions of steady heat transfer, as its both sides Air Temperature Difference 1K
When (1 DEG C), pass through the heat of unit square rice wall area transmission in the unit interval.Conventional field detection means is heat-flow meter
Method, the heating means of onsite application is that installation air-conditioning and oil heater are heated or freezed in summer list using air-conditioning.Needle
To the requirement in standard：Enclosed structure high temperature side surface temperature should be higher than that 10 DEG C of low temperature side or more, and any in detection process
Moment must not be equal to or less than low temperature side surface temperature.It is difficult that 10 DEG C or more are kept to space heating or refrigeration in routine testing
The temperature difference is all difficult to meet the requirements when air-conditioning effect is bad or needs the room heated excessive especially in season in spring and autumn, and
And if necessary to be heated using air-conditioning, need onsite moving that air-conditioning is installed, it is inconvenient for operation.
Prior art discloses a kind of heat transfer coefficient detecting instrument, including being located at testee side and being connect with control cabinet
Temperature sensor probe, put in testee side there are one provide one dimensional heat transfer heat source hot tank, hot tank cabinet wall cloth
There are hot tank heating unit and insulating layer, temperature sensor probe is covered among hot tank, and hot tank and electric heater are connected with control cabinet.
The principle of the prior art Main Basiss " one dimensional heat transfer " carries out heat transfer coefficient detection, needs to ensure the temperature in hot tank and outside hot tank
Degree is consistent, between hot transmission does not occur, therefore both needed to being heated in hot tank, it is also necessary to room air is added
Heat, using detection time is required to be no less than 72h in this detection mode standard, babinet is interior and indoor temperature difference requirement is when testing
Meet mean temperature difference and should not exceed 0.5 DEG C, scene is difficult control, and certain influence is caused on the accuracy of measurement result, this
Complicated, the inconvenient detection of detector.
Invention content
Therefore, the technical problem to be solved in the present invention is heat transfer coefficient structure of the detecting device of the prior art is overcome to answer
The defects of miscellaneous, inconvenient detection, detects heating unit and heat transfer so as to provide a kind of heat transfer coefficient simple in structure, facilitating detection
Coefficient detection device.
In order to solve the above technical problems, the present invention provides a kind of heat transfer coefficient detection heating unit, including：
Babinet, including box-like body and the cavity being formed in inside the box-like body, the opening of the box-like body
End and the inner surface of building enclosure to be detected are tightly connected；
Heating unit, in the babinet.
The heating unit is thin film heater, and the thin film heater is arranged on the inner wall of the cavity.
Microcontroller and the monitoring probe in the cavity are further included, target temperature is set by the microcontroller
Degree, the monitoring probe acquire the temperature in the babinet and pass to the microcontroller, and the target temperature is more than described
During temperature in babinet, for the microcontroller to the order of thin film heater output heating, the target temperature is equal to institute
When stating the temperature in babinet, the microcontroller exports the order for stopping heating to the thin film heater.
The box-like body is equipped with card slot, and the card slot is connect with the microcontroller, and phonecard is inserted into the card slot
The microcontroller timing sends the collected temperature of the monitoring probe to corresponding cell-phone number afterwards.
The box-like body is equipped with the display screen being electrically connected with the microcontroller, the collected temperature of the monitoring probe
Degree display is on the display screen.
Be additionally provided with power-off sensor in the babinet, the power-off sensor be connected to the thin film heater and power supply it
Between, power-off or during failure, the voltage of the power-off sensor both sides changes, and the GSM being connect with the power-off sensor is remote
Journey alarm sends power cut-off information to corresponding cell-phone number.
The box-like body includes outer layer and internal layer, filling with insulation material between the outer layer and internal layer.In the babinet
Equipped with thermal insulation layer.
The openend is equipped with rubber weather strip.
The babinet is fixed after further including the inner surface sealed connection of the babinet and the building enclosure to be detected
Fixed support device.
The fixed support device include being set on protrusion on the outside of the babinet, the fixing piece that is fixedly connected with the ground with
And it is connected to the retractable support lever between the protrusion and the fixing piece.
The present invention also provides a kind of heat transfer coefficient detection devices, and heating unit is detected including a kind of heat transfer coefficient.
Technical solution of the present invention has the following advantages that：
1. a kind of heat transfer coefficient detection heating unit provided by the invention, using heat-flow meter method to architectural exterior-protecting construction into
When row heat transfer coefficient detects, the inner surface of the openend of babinet and building enclosure to be detected is tightly connected, is filled by heating
It puts to being heated in babinet, makes the temperature in babinet higher than 10 DEG C of temperature on the outside of building enclosure or more, you can it is detected,
It is simple in structure, it does not need to carry air-conditioning at the scene, greatly improve work efficiency, it is not required that interior is heated, is operated
Simply, it can be all detected in various seasons.
2. a kind of heat transfer coefficient detection heating unit provided by the invention, the heating unit is thin film heater, described
Thin film heater is arranged on the inner wall of the cavity, the thermal conversion efficiency height of thin film heater, long lifespan, using film heating
Device further mitigates the weight of babinet, facilitates carrying.
3. a kind of heat transfer coefficient detection heating unit provided by the invention, further includes microcontroller and set on the cavity
Interior monitoring probe sets target temperature by the microcontroller, and the temperature that the monitoring is popped one's head in the acquisition babinet is simultaneously
Pass to the microcontroller, when the target temperature is more than the temperature in the babinet, the microcontroller is to the film
The order of heater output heating, when the target temperature is equal to the temperature in the babinet, the microcontroller is to described thin
Film heater output stops the order of heating, and the convenient control to case body temperature makes the temperature in babinet be more than building enclosure
10 DEG C of the temperature in outside or more, ensure that the accuracy of testing result.
4. a kind of heat transfer coefficient detection heating unit provided by the invention, the box-like body are equipped with card slot, the card
Slot is connect with the microcontroller, and the microcontroller periodically sends institute to corresponding cell-phone number after phonecard is inserted into the card slot
The collected temperature of monitoring probe is stated, convenient for being remotely monitored to temperature.
5. a kind of heat transfer coefficient detection heating unit provided by the invention, the box-like body are equipped with and the microcontroller
The display screen of device electrical connection, the monitoring pop one's head in collected temperature display on the display screen, testing staff are facilitated to check.
6. a kind of heat transfer coefficient provided by the invention detects heating unit, power-off sensor, institute are additionally provided in the babinet
It states power-off sensor to be connected between the thin film heater and power supply, power-off or during failure, the power-off sensor both sides
Voltage changes, and power cut-off information, side are sent to corresponding cell-phone number with the GSM long-distance alarm apparatus of the power-off sensor connection
Just control of the testing staff to field condition.
7. a kind of heat transfer coefficient detection heating unit provided by the invention, the box-like body include outer layer and internal layer, institute
Filling with insulation material between outer layer and internal layer is stated, reduces the thermal loss in case, thin film heater can be heated rapidly to setting
Temperature improves detection efficiency.
8. a kind of heat transfer coefficient detection heating unit provided by the invention, the openend is equipped with rubber weather strip, rubber
Sealing strip has certain elasticity, it is ensured that the sealed connection of babinet and the inner surface of building enclosure.
9. a kind of heat transfer coefficient detection heating unit provided by the invention, the fixed support device include being set on the case
The protrusion of external side, the fixing piece being fixedly connected with the ground and be connected between the protrusion and the fixing piece can
Telescopic supporting rod, it is simple in structure, it is easy for installation, make babinet contact with the inner surface of enclosed structure even closer.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution of the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is that a kind of heat transfer coefficient provided in the first embodiment of the present invention detects the structural representation of heating unit
Figure；
Fig. 2 is the structure diagram of an outer surface of the babinet that a kind of heat transfer coefficient shown in FIG. 1 detects heating unit；
Fig. 3 is that a kind of heat transfer coefficient shown in FIG. 1 detects the left view that heating unit is connected on the inner surface of enclosed structure
Figure.
Reference sign：
1- babinets；2- thin film heaters；3- rubber weather strips；
4- display screens；5- protrusions；6- supporting rods；
7- fixing pieces.
Specific embodiment
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's all other embodiments obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instructions such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Convenient for the description present invention and simplify description rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is only used for description purpose, and it is not intended that instruction or hint relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or be integrally connected；It can
To be mechanical connection or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
As long as in addition, technical characteristic involved in invention described below different embodiments non-structure each other
It can be combined with each other into conflict.
Embodiment 1
A kind of specific embodiment of heating unit is detected for a kind of heat transfer coefficient as shown in Figs. 1-3, including long 2m, height
The babinet 1 of 1m, depth 0.5m, the babinet 1 include the box-like body with outer layer and internal layer and are formed in the box-like body
Anti abrasive aluminium type material, the outer layer and internal layer of the babinet 1 is respectively adopted in the cavity in portion, the internal layer and outer layer of the babinet 1
Between filled with heat-barrier material, the openend of the babinet 1 is equipped with rubber weather strip 3, the thin film heater 2 as heating unit
It is arranged on the inner wall of the cavity, the monitoring probe for acquiring the temperature in the babinet 1, microcontroller is equipped in the cavity
It being integrated on an inner wall of the cavity, the box-like body is equipped with card slot, and the card slot is connect with the microcontroller,
The microcontroller timing sends the collected temperature of the monitoring probe to corresponding cell-phone number after phonecard is inserted into the card slot
Degree is equipped with the display screen 4 being electrically connected with the microcontroller, the collected temperature of the monitoring probe in the outside of box-like body
It is shown on the display screen 4, the position being located between the thin film heater 2 and power supply in the babinet 1 is connected with power-off
Sensor, external 220V plant-grid connections babinet 1 are heated, power-off or during failure, the voltage hair of the power-off sensor both sides
Changing sends power cut-off information to corresponding cell-phone number with the GSM long-distance alarm apparatus of the power-off sensor connection, facilitates detection
Monitoring of the personnel to scene.The outside of babinet 1 is equipped with protrusion 5, and ground is fixedly connected with fixing piece 7, and retractable support lever 6 connects
It is connected between the protrusion 5 and the fixing piece 7, the protrusion 5, fixing piece 7, retractable support lever 6 are formed by described in
1 fixed fixed support device of babinet.
In use, babinet 1 to be connected to the inner surface of enclosed structure, made by squeezing the rubber weather strip 3 at openend
Babinet 1 and the inner surface of enclosed structure are in close contact, and 6 one end of retractable support lever are stuck on the protrusion 5 in 1 outside of babinet,
The other end is caught on the fixing piece 7 being fixedly connected with the ground, and is adjusted supporting rod after the length of supporting rod 6 through locking mechanism
6 lockings, babinet 1 are firmly connected on enclosed structure inner surface, and microcontroller is set according to the temperature on the outside of building enclosure
Target temperature, target temperature are more than 10 DEG C of temperature on the outside of building enclosure or more, open the switch of thin film heater 2 to babinet 1
It is inside heated, the monitoring probe acquires the temperature in the babinet 1 and passes to the microcontroller, the target temperature
During more than temperature in the babinet 1, the microcontroller is to the order of the thin film heater 2 output heating, the target
When temperature is equal to the temperature in the babinet 1, the microcontroller exports the order for stopping heating to the thin film heater 2,
Microcontroller timing sends the monitoring to corresponding cell-phone number and pops one's head in collected temperature, and when power-off or failure, GSM is remote
Journey alarm sends power cut-off information to corresponding cell-phone number.
Embodiment 2
The present embodiment is a kind of specific embodiment of heat transfer coefficient detection device, including the one kind provided in embodiment 1
Heat transfer coefficient detection heating unit, heat-flow meter plate, the temperature test instrument positioned at building enclosure outer surface.
During detection, after heat-flow meter plate is adjacent to adhesive tape on the inner surface of the enclosed structure in babinet 1, babinet 1 is led to
The mode crossed in embodiment 1 is fixed to the inner surface of enclosed structure, and after being heated to target temperature in babinet 1, record is gone along with sb. to guard him respectively
The numerical value of temperature, building enclosure internal surface temperature, hull-skin temperature, heat-flow meter plate inside and outside structure, according to heat transfer coefficient formula
Heat transfer coefficient is calculated, record multi-group data is averaged.
Obviously, the above embodiments are merely examples for clarifying the description, and is not intended to limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And the obvious variation thus extended out or
Among changing still in the protection domain of the invention.
Claims (11)
1. a kind of heat transfer coefficient detects heating unit, which is characterized in that including：
Babinet, including box-like body and the cavity being formed in inside the box-like body, the openend of the box-like body with
The inner surface of building enclosure to be detected is tightly connected；
Heating unit, in the babinet.
2. a kind of heat transfer coefficient detection heating unit according to claim 1, which is characterized in that the heating unit is thin
Film heater, the thin film heater are arranged on the inner wall of the cavity.
3. a kind of heat transfer coefficient detection heating unit according to claim 2, which is characterized in that further include microcontroller with
And the monitoring probe in the cavity, target temperature is set by the microcontroller, the monitoring is popped one's head in described in acquisition
Temperature in babinet simultaneously passes to the microcontroller, when the target temperature is more than the temperature in the babinet, the micro-control
The order that device processed is heated to thin film heater output, it is described micro- when the target temperature is equal to the temperature in the babinet
Controller exports the order for stopping heating to the thin film heater.
4. a kind of heat transfer coefficient detection heating unit according to claim 3, which is characterized in that set on the box-like body
There is card slot, the card slot is connect with the microcontroller, and the microcontroller is periodically to correspondence after phonecard is inserted into the card slot
Cell-phone number send the monitoring and pop one's head in collected temperature.
5. a kind of heat transfer coefficient detection heating unit according to claim 3, which is characterized in that set on the box-like body
There is the display screen being electrically connected with the microcontroller, the monitoring pops one's head in collected temperature display on the display screen.
6. a kind of heat transfer coefficient detection heating unit according to claim 4, which is characterized in that be additionally provided in the babinet
Sensor is powered off, the power-off sensor is connected between the thin film heater and power supply, power-off or during failure, the power-off
The voltage of sensor both sides changes, and is sent out with the GSM long-distance alarm apparatus of the power-off sensor connection to corresponding cell-phone number
Send power cut-off information.
A kind of 7. heat transfer coefficient detection heating unit according to any one of claim 1-6, which is characterized in that the case
Body ontology includes outer layer and internal layer, filling with insulation material between the outer layer and internal layer.
8. a kind of heat transfer coefficient detection heating unit according to claim 7, which is characterized in that the openend is equipped with rubber
Glue sealing strip.
9. a kind of heat transfer coefficient detection heating unit according to any one of claim 1-6, which is characterized in that further include
By the fixed fixed support device of the babinet after the babinet and the sealed connection of the inner surface of the building enclosure to be detected.
A kind of 10. heat transfer coefficient detection heating unit according to claim 9, which is characterized in that the fixed support dress
It puts the fixing piece including being set on protrusion on the outside of the babinet, being fixedly connected with the ground and is connected to the protrusion and institute
State the retractable support lever between fixing piece.
A kind of a kind of 11. heat transfer coefficient detection device, which is characterized in that heat transfer described in including any one of claim 1-10
Coefficient detects heating unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810229901.6A CN108226221A (en) | 2018-03-20 | 2018-03-20 | A kind of heat transfer coefficient detection heating unit and heat transfer coefficient detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810229901.6A CN108226221A (en) | 2018-03-20 | 2018-03-20 | A kind of heat transfer coefficient detection heating unit and heat transfer coefficient detection device |
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| Publication Number | Publication Date |
|---|---|
| CN108226221A true CN108226221A (en) | 2018-06-29 |
Family
ID=62659732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810229901.6A Pending CN108226221A (en) | 2018-03-20 | 2018-03-20 | A kind of heat transfer coefficient detection heating unit and heat transfer coefficient detection device |
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| CN (1) | CN108226221A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109917239A (en) * | 2019-03-01 | 2019-06-21 | 华南理工大学 | A kind of measuring system and method for silicon rubber filth surface-discharge transmitting temperature |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2476020Y (en) * | 2001-04-30 | 2002-02-06 | 北京中建建筑科学技术研究院 | Detector for testing coefficient of heat transfer |
| CN201464397U (en) * | 2009-08-12 | 2010-05-12 | 长沙理工大学 | On-site detection device for heat transfer coefficient of building enclosure structure |
-
2018
- 2018-03-20 CN CN201810229901.6A patent/CN108226221A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2476020Y (en) * | 2001-04-30 | 2002-02-06 | 北京中建建筑科学技术研究院 | Detector for testing coefficient of heat transfer |
| CN201464397U (en) * | 2009-08-12 | 2010-05-12 | 长沙理工大学 | On-site detection device for heat transfer coefficient of building enclosure structure |
Non-Patent Citations (2)
| Title |
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| 公茂泉主编: "《破解煤矿安全难题 山东煤炭工业安全发展之路》", 31 December 2006, 北京：煤炭工业出版社, pages: 135 - 136 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109917239A (en) * | 2019-03-01 | 2019-06-21 | 华南理工大学 | A kind of measuring system and method for silicon rubber filth surface-discharge transmitting temperature |
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Address after: 212003 Block 8B Honshan Road, Zhenjiang City, Jiangsu Province Applicant after: Zhenjiang Construction Engineering Quality Inspection Center Co., Ltd. Address before: 212003 Quality Inspection Center for Construction Engineering of No.8 Honshan Road, Zhenjiang City, Jiangsu Province Applicant before: Zhenjiang Jianke Engineering Quality Inspection Center Co., Ltd. |