CN114235892A - Method for testing cold and warm feeling of surface of household wood product - Google Patents
Method for testing cold and warm feeling of surface of household wood product Download PDFInfo
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- CN114235892A CN114235892A CN202111562027.6A CN202111562027A CN114235892A CN 114235892 A CN114235892 A CN 114235892A CN 202111562027 A CN202111562027 A CN 202111562027A CN 114235892 A CN114235892 A CN 114235892A
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- 239000002023 wood Substances 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000012360 testing method Methods 0.000 title claims abstract description 29
- 238000001816 cooling Methods 0.000 claims abstract description 27
- 238000011156 evaluation Methods 0.000 claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 238000001931 thermography Methods 0.000 claims description 8
- 230000001276 controlling effect Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000012512 characterization method Methods 0.000 abstract 1
- 238000011158 quantitative evaluation Methods 0.000 abstract 1
- 238000013139 quantization Methods 0.000 abstract 1
- 239000004753 textile Substances 0.000 description 12
- 239000003973 paint Substances 0.000 description 6
- 241000920652 Quercus lusitanica Species 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011002 quantification Methods 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 241000219492 Quercus Species 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002996 emotional effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000036651 mood Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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- 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
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Abstract
The invention provides a method for testing the cold and warm feeling of the surface of a household wood product. According to the invention, through the quantitative characterization of the temperature measuring device on the surface temperature of the household wood product, the problems of difficult quantization and large random error existing in the subjective evaluation of the surface cooling and heating feeling of the household wood product are solved, and the method has very important significance for the effective quantitative evaluation of the surface cooling and heating feeling of the household wood product.
Description
Technical Field
The invention relates to a method for testing the cold and warm feeling of the surface of a household wood product, and belongs to the technical field of wood product detection.
Background
Household wood products enable the living of people to be indispensable, the products can meet the functional requirements of people, and meanwhile, the products can bring emotional help to people. For example, a warm table can bring necessary warm feeling to people contacting the table at low temperature, so that people can keep pleasant mood to do work, study and other activities. Therefore, the cold and warm feeling on the surface of the household wood product refers to the cold and warm feeling of the human body to the wood product due to the heat exchange between the human body and the wood product when the human body contacts with the household wood product.
At present, the research on the cold and warm feeling is mainly focused on the textile industry, for example, the invention patent with the application number of 201410531445.2 discloses a cold and warm feeling test and index calculation method for textiles, which is used for heating the textiles placed in a fixed temperature and humidity environment, calculating the thermal power and time of the textiles and reflecting the cold and warm feeling of the textiles through a drawn thermal power curve. The invention patent with the application number of 201710093428.9 also discloses a method for testing the cold and warm feeling of textiles by simulating the physiological feeling of human bodies, which mainly adopts a heat preservation tester to simulate the real heat dissipation rule of human bodies by controlling heating power, thereby representing the cold and warm feeling of the textiles more truly and accurately. The principle of the testing method for the cold and warm feeling of the textile is mainly to test the maximum transient heat flow (Q) passing through the textilemax) By QmaxTo quantify the cool and warm feel characteristic of the textile.
At present, a subjective evaluation method is mainly adopted for testing the cold and warm feeling of the surface of a household wood product, namely, a corresponding score is given through the contact of a human body and the household wood product, and the cold and warm feeling of the household wood product is subjectively judged by comparing the score. The cold and warm feeling of the household wood products is tested by imitating a quantification method of the cold and warm feeling of the textile, and the household wood products have certain thickness and nonuniform materials, so that the maximum transient heat flow is difficult to accurately measure, and the cold and warm sensing test method of the textile is difficult to implement and utilize in the household wood products.
In recent years, along with the improvement of the use requirements of people on household wood products, the cold and warm feeling of the household wood products draws attention to domestic and foreign markets. However, at present, no effective testing and evaluating technology or method for quantitatively representing the cold and warm feeling of household wood products exists at home and abroad.
Disclosure of Invention
The invention aims to provide a method for testing the cold and warm feeling of the surface of a household wood product, and aims to solve the problems that the existing method for testing the cold and warm feeling of the household wood product in the background technology is strong in subjectivity, large in random error, difficult to quantify in evaluation and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for testing the cold and warm feeling of the surface of a household wood product comprises the following steps:
the method comprises the following steps: regulating and controlling the temperature and humidity of a test environment, and placing the household wood products over against a lens of a temperature measuring device at a certain distance;
step two: placing a heat source on the surface of the household wood product in the step one, and staying for a certain time;
step three: and (5) removing the heat source in the second step, simultaneously starting the temperature measuring device in the first step, recording the temperature change of the position of the heat source on the surface of the household wood product, and calculating to obtain the cold and warm feeling index of the surface of the household wood product.
Preferably, the household wood product is one of a door panel, a wallboard, a cabinet panel, a table panel and a floor.
Preferably, the temperature and humidity of the environment in the first step are 20 +/-2 ℃ and 65 +/-5% of humidity, the distance is 20-30 cm, and the temperature measuring device is a FLIR thermal infrared imager.
Preferably, the heat source in the second step is a heating block and a palm, the temperature of the heat source is 30-40 ℃, and the time is 10-20 seconds.
Preferably, the diameter of the heating block in the second step is 5-10 cm, and the palm of the hand is that of an adult of 25-35 years old.
Preferably, in the third step, the temperature change of the position of the surface heat source of the household wood product is recorded, the recording time is 0.5-2 minutes, and the method for calculating the cold and warm feeling index includes:
step 5.1: reading the surface temperature of the household woodwork just removed from the heat source from the temperature measuring device, and calculating the surface temperature as T0(ii) a Reading the temperature at the end of recording, measured as Te；
Step 5.2: calculating surface cooling of household woodworkRate S ═ T0-Te) And/t, wherein S is the cooling rate, and t is the temperature recording time.
Step 5.3: and determining the cooling rate index of the surface cold and warm feeling of the household woodwork by combining the cooling rate and the subjective evaluation of the surface cold and warm feeling of the household woodwork.
Preferably, the subjective evaluation in step 5.3 is an evaluation result of manual touch, and the temperature reduction rate index is a temperature reduction rate corresponding to a warm feeling or a cold feeling which is subjectively evaluated.
The working principle of the method for testing the surface cooling and heating sensing of the household wood products is as follows: under certain humiture environmental condition, adopt temperature measuring device to monitor the surface temperature who preheats house woodwork and test, get rid of behind the heating heat source, the surface temperature of house woodwork reduces gradually, and the rate of reduction on different surfaces is different to some extent, combines cooling rate and subjective changes in temperature and feels the evaluation, finally shows the cold and warm sense of house woodwork with the height of cooling rate.
The invention has the following beneficial effects:
(1) the method for testing the cold and warm feeling of the surface of the household wood product has the characteristics of strong objectivity, rapidness and accuracy.
(2) The method quantitatively expresses the cold and warm feeling of the household wood product by utilizing the surface cooling rate of the household wood product, effectively avoids the problems of difficult quantification and large random error in subjective evaluation, and has very important significance for effectively and quantitatively evaluating the cold and warm feeling of the surface of the household wood product.
Drawings
FIG. 1 is a temperature-time graph of the Sp1 position at the recording time t for a red bright paint cabinet panel;
FIG. 2 shows the surface temperature T of a red bright paint cabinet plate0Temporal infrared thermography;
FIG. 3 shows the surface temperature T of the red bright paint cabinet plateeTemporal infrared thermography;
FIG. 4 is a comparison graph of the temperature change curves of Sp1 positions with time for 4 household wood products.
Detailed Description
To better illustrate the technical features and advantages of the present invention, the following detailed description is given in conjunction with specific embodiments so that the present invention can be more easily understood by those skilled in the art, and the scope of the present invention is more clearly defined.
Example 1
The method for testing the cold and warm feeling of the surface of the household wood product comprises the following steps:
the method comprises the following steps: in an environment with the temperature of 20 ℃ and the humidity of 65%, placing a yellow oak veneer door plate opposite to a lens of an FLIR thermography with the distance of 30 cm, wherein the specific position is shown in figure 1;
step two: placing the palm at the center of the door panel, and staying for 10 seconds;
step three: and (4) immediately starting the Thermovision thermal infrared imager after the palm is taken away, and recording the temperature change of the palm position on the surface of the door panel, wherein the recording time is 55 seconds. From the temperature-time curve, the onset recorded temperature (T) of the oak veneer door panel0) At 25.2 deg.C, the end recording temperature (T)e) Is 20.2 deg.c, so its cooling rate is (25.2-20.2)/55 ═ 0.091 deg.c/sec.
Example 2
The method for testing the cold and warm feeling of the surface of the household wood product comprises the following steps:
the method comprises the following steps: placing a red gloss paint table plate opposite to a lens of an FLIR thermography in an environment with the temperature of 20 ℃ and the humidity of 65%, wherein the distance between the red gloss paint table plate and the lens of the FLIR thermography is 30 cm;
step two: placing the palm at the center of the table plate, and staying for 10 seconds;
step three: and (4) immediately starting the Thermovision thermal infrared imager after the palm is taken away, and recording the temperature change of the palm position on the surface of the table plate for 55 seconds. From the temperature-time curve (as shown in FIG. 1), the temperature (T) at which the red lacquer table began to record was determined0) Is 24.2 deg.C (as shown in FIG. 2), and ends recording the temperature (T)e) 20.6 deg.c (as shown in fig. 3), so its cooling rate is (24.2-20.6)/55-0.065 deg.c/sec.
Example 3
The method for testing the cold and warm feeling of the surface of the household wood product comprises the following steps:
the method comprises the following steps: in an environment with the temperature of 20 ℃ and the humidity of 65%, placing a Molandie gray wallboard over against a lens of an FLIR thermography with the distance of 30 cm;
step two: placing the palm at the center of the wallboard, and staying for 10 seconds;
step three: and (4) immediately starting the Thermovision thermal infrared imager after the palm is taken away, and recording the temperature change of the palm position on the surface of the wallboard, wherein the recording time is 55 seconds. From the temperature-time curve, the onset recorded temperature (T) for the Molandy gray wallboard0) At 24.9 deg.C, the end recording temperature (T)e) It was 21.4 deg.c, so that its cooling rate was (24.9-21.4)/55-0.064 deg.c/sec.
Example 4
The method for testing the cold and warm feeling of the surface of the household wood product comprises the following steps:
the method comprises the following steps: in an environment with the temperature of 20 ℃ and the humidity of 65%, placing a matte white cabinet plate opposite to a lens of an FLIR thermography infrared thermal imager, wherein the distance between the matte white cabinet plate and the lens is 30 cm;
step two: placing the palm at the center of the cabinet plate, and staying for 10 seconds;
step three: and (4) immediately starting the Thermovision thermal infrared imager after the palm is taken away, and recording the temperature change of the palm position on the surface of the cabinet plate, wherein the recording time is 55 seconds. From the temperature-time curve, the starting recording temperature (T) of the matte white cabinet board can be known0) At 25.9 deg.C, the end recording temperature (T)e) It was 21.3 ℃ and therefore its cooling rate was (25.9-21.3)/55-0.084 ℃/sec.
Example 5
Comparative examples 1-4 subjective evaluation results of surface cooling rates and their cooling and warming sensations of different household wood products, the temperature-time curves of the 4 different household wood products are shown in fig. 4, and specific comparative analyses are shown in table 1.
TABLE 1 Cooling Rate and subjective evaluation results of examples 1-4
| Examples | Cooling Rate/(. degree. C./second) | Subjective evaluation results |
| Example 1 | 0.091 | Cold |
| Example 2 | 0.065 | Is warmer |
| Example 3 | 0.064 | Is warmer |
| Example 4 | 0.084 | Is cooler |
As can be seen from Table 1, the cooling rates for examples 1-4 are, in descending order: the yellow oak veneer gluing door plate, the matte white cabinet plate, the red bright paint table plate and the Molandy gray wall plate are subjected to subjective evaluation, the cold feeling is greater than the cold feeling, the warmer is greater than the warmer, the larger the cooling rate is, the cold feeling is presented on the surface of a household wood product, and the smaller the cooling rate is, the warm feeling is presented.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A method for testing the cold and warm feeling of the surface of a household wood product is characterized by comprising the following steps:
the method comprises the following steps: regulating and controlling the temperature and humidity of a test environment, and placing the household wood products over against a lens of a temperature measuring device at a certain distance;
step two: placing a heat source on the surface of the household wood product in the step one, and staying for a certain time;
step three: and (5) removing the heat source in the second step, simultaneously starting the temperature measuring device in the first step, recording the temperature change of the position of the heat source on the surface of the household wood product, and calculating to obtain the cold and warm feeling index of the surface of the household wood product.
2. The method for testing the cold and warm feeling of the surface of a household wood product according to claim 1, wherein the household wood product is one of a door panel, a wallboard, a cabinet panel, a table panel and a floor.
3. The method for testing the cold and warm feeling on the surface of household wood products according to claim 1, wherein the temperature and the humidity of the environment in the first step are 20 +/-2 ℃ and 65 +/-5% of the temperature, the distance is 20-30 cm, and the temperature measuring device is an FLIR thermography.
4. The method for testing the cold and warm feeling of the surface of a household wood product according to claim 1, wherein the heat source in the second step is a heating block and a palm, the temperature of the heat source is 30-40 ℃, and the time is 10-20 seconds.
5. The method for testing the cold and warm feeling on the surface of a household wood product according to claim 4, wherein the diameter of the heating block is 5-10 cm, and the palm of the hand is that of an adult of 25-35 years old.
6. The method for testing the surface cooling and heating feeling of the household wood products according to claim 1, wherein in the third step, the change of the temperature of the position of the surface heat source of the household wood products is recorded, the recording time is 0.5-2 minutes, and the method for calculating the index of the cooling and heating feeling comprises the following steps:
step 6.1: reading the surface temperature of the household woodwork just removed from the heat source from the temperature measuring device, and calculating the surface temperature as T0(ii) a Reading the temperature at the end of recording, measured as Te；
Step 6.2: calculating the surface cooling rate S ═ T (T) of household woodwork0-Te) And/t, wherein S is the cooling rate, and t is the temperature recording time.
Step 6.3: and determining the cooling rate index of the surface cold and warm feeling of the household woodwork by combining the cooling rate and the subjective evaluation of the surface cold and warm feeling of the household woodwork.
7. The method for testing the cold and warm feeling of the surface of the household wood product according to claim 6, wherein the subjective evaluation in step 6.3 is an evaluation result of manual touch, and the temperature reduction rate index is a temperature reduction rate corresponding to the subjective evaluation of the warm feeling or the cold feeling.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03274429A (en) * | 1990-03-26 | 1991-12-05 | Kao Corp | Method and apparatus of measuring surface temperature of object |
| CN103076355A (en) * | 2012-12-31 | 2013-05-01 | 东华大学 | Method for representing far infra-red radiation performance of fabrics |
| CN103076358A (en) * | 2012-12-28 | 2013-05-01 | 东华大学 | Thermal insulation performance detection equipment and detection method for high-bulk proteiform bedding product |
| CN104316557A (en) * | 2014-10-10 | 2015-01-28 | 东华大学 | Temperature variation sensing and index calculating method of textiles |
| CN106770448A (en) * | 2017-02-21 | 2017-05-31 | 烟台南山学院 | A kind of method of testing for simulating the textile changes in temperature sense that Human Physiology is felt |
| CN206892011U (en) * | 2017-07-08 | 2018-01-16 | 南京林业大学 | A kind of wooden material surface heat-radiating properties test device |
| WO2021117343A1 (en) * | 2019-12-10 | 2021-06-17 | パナソニックＩｐマネジメント株式会社 | Spatial temperature estimation system, warm/cold sensation estimation system, spatial temperature estimation method, warm/cold sensation estimation method, and program |
| CN213995918U (en) * | 2020-12-04 | 2021-08-20 | 东莞市高天试验设备有限公司 | High-low temperature damp-heat alternating test room |
-
2021
- 2021-12-17 CN CN202111562027.6A patent/CN114235892A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03274429A (en) * | 1990-03-26 | 1991-12-05 | Kao Corp | Method and apparatus of measuring surface temperature of object |
| CN103076358A (en) * | 2012-12-28 | 2013-05-01 | 东华大学 | Thermal insulation performance detection equipment and detection method for high-bulk proteiform bedding product |
| CN103076355A (en) * | 2012-12-31 | 2013-05-01 | 东华大学 | Method for representing far infra-red radiation performance of fabrics |
| CN104316557A (en) * | 2014-10-10 | 2015-01-28 | 东华大学 | Temperature variation sensing and index calculating method of textiles |
| CN106770448A (en) * | 2017-02-21 | 2017-05-31 | 烟台南山学院 | A kind of method of testing for simulating the textile changes in temperature sense that Human Physiology is felt |
| CN206892011U (en) * | 2017-07-08 | 2018-01-16 | 南京林业大学 | A kind of wooden material surface heat-radiating properties test device |
| WO2021117343A1 (en) * | 2019-12-10 | 2021-06-17 | パナソニックＩｐマネジメント株式会社 | Spatial temperature estimation system, warm/cold sensation estimation system, spatial temperature estimation method, warm/cold sensation estimation method, and program |
| CN213995918U (en) * | 2020-12-04 | 2021-08-20 | 东莞市高天试验设备有限公司 | High-low temperature damp-heat alternating test room |
Non-Patent Citations (5)
| Title |
|---|
| 徐璐 等: "基于桌类家具的人体温觉特性研究", 家具, vol. 38, no. 03, 1 May 2017 (2017-05-01), pages 89 - 92 * |
| 徐璐 等: "基于桌类家具的人体温觉特性研究", 家具, vol. 38, no. 3, pages 89 - 92 * |
| 李莉 等: "软体家具舒适性评价", 西北林学院学报, vol. 26, no. 05, 15 September 2011 (2011-09-15), pages 210 - 213 * |
| 郑晶晶: "冬季用围巾保暖性能评价", 纺织学报, vol. 38, no. 12, 15 December 2017 (2017-12-15), pages 129 - 134 * |
| 陆蔚怡: "椅凳类家具温冷感测试方法研究", 中国优秀硕士学位论文全文数据库 工程科技I辑, no. 2, pages 22 - 47 * |
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