CN113376082A - Method and system for measuring cooling performance of umbrella - Google Patents
Method and system for measuring cooling performance of umbrella Download PDFInfo
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- CN113376082A CN113376082A CN202110639384.1A CN202110639384A CN113376082A CN 113376082 A CN113376082 A CN 113376082A CN 202110639384 A CN202110639384 A CN 202110639384A CN 113376082 A CN113376082 A CN 113376082A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/004—Investigating resistance of materials to the weather, to corrosion, or to light to light
Abstract
The invention discloses a method and a system for measuring the cooling performance of an umbrella, and relates to the technical field of detection of the cooling performance of the umbrella, wherein the method for measuring the cooling performance of the umbrella comprises the following steps of S1, placing the umbrella to be measured, which is provided with a plurality of temperature acquisition devices, in an environment with set illumination intensity e, and stretching and placing for at least 10 minutes; s2, acquiring the temperature Ti in the umbrella and the temperature To outside the umbrella of the umbrella To be detected in real time by the temperature acquisition device within the continuous time t; s3, analyzing by the control system according To the temperature Ti in the umbrella and the temperature To outside the umbrella of the umbrella To be detected, which are acquired by the temperature acquisition device, To obtain a temperature difference delta T; s4, calculating the temperature difference rate R between the temperature Ti in the umbrella To be measured and the temperature To outside the umbrella, wherein R is delta T/To multiplied by 100%. The measuring method can intuitively reflect the cooling and sun-proof performance of the umbrella in the real use process, and the accuracy of the measuring method for measuring the cooling performance of the umbrella is high.
Description
Technical Field
The invention relates to the technical field of parachute cooling performance detection, in particular to a measurement method and a measurement system for parachute cooling performance.
Background
High temperature in summer and hot weather, people often prop the sun shade when going out, and ordinary sun shade can only be sun-proof, can't satisfy the demand of people when outdoor. Various different types of umbrellas with cooling functions appear in the market at present, for example, the umbrellas are provided with cooling reflective coatings to treat the umbrella surface, spray water mist in the umbrellas, and an air supply device is arranged in the umbrellas to achieve the cooling function by adopting heat insulation cooling type nano materials, multilayer sun-proof fabrics and other modes. However, due to the lack of a measurement method for detecting the cooling performance of the umbrella in the prior art, the cooling performance of the umbrella in the actual use process cannot be accurately measured, so that a manufacturer cannot achieve reasonable quality control on the cooling performance of the umbrella, and a consumer cannot select a proper umbrella according to the cooling performance.
Disclosure of Invention
1. Technical problem to be solved by the invention
The invention provides a measuring method and a measuring system for the cooling performance of an umbrella, aiming at the technical problem that the cooling performance of the umbrella in the actual use process cannot be accurately measured due to the lack of a measuring method for detecting the cooling performance of the umbrella in the prior art.
2. Technical scheme
In order to solve the problems, the technical scheme provided by the invention is as follows:
a measurement method for the cooling performance of an umbrella comprises the following steps:
s1, placing the umbrella to be tested with the plurality of temperature acquisition devices in an environment with set illumination intensity e, and unfolding for at least 10 minutes;
s2, in the continuous time T, the temperature acquisition device acquires the umbrella internal temperature T of the umbrella to be measured in real timeiAnd the temperature T outside the umbrellao；
S3, controlling the temperature T in the umbrella of the umbrella to be measured according to the temperature collected by the temperature collecting deviceiAnd the temperature T outside the umbrellaoAnalyzing to obtain a temperature difference delta T;
s4, calculating the umbrella internal temperature T of the umbrella to be measurediAnd the temperature T outside the umbrellaoThe temperature difference rate R, R ═ delta T/To×100﹪。
In the invention, the temperature difference rate R represents the temperature reduction and sun protection performance, the larger the temperature difference rate R is, the better the temperature reduction and sun protection performance of the umbrella is, and the smaller the temperature difference rate R is, the worse the temperature reduction and sun protection performance of the umbrella is. According to the invention, the umbrella to be detected is placed in the environment with the set illumination intensity e for at least 10 minutes, so that the influence of the temperature and the humidity in the environment on the umbrella to be detected can be effectively avoided, a real use scene is simulated, and the accuracy of subsequent detection is further improved; meanwhile, under the environment of setting the illumination intensity e, the internal temperature and the external temperature of the umbrella to be tested in the continuous time T are monitored in real time through a plurality of temperature acquisition devices, then the temperature difference delta T between the internal temperature and the external temperature of the umbrella to be tested is obtained through analysis of a control system, and finally the temperature difference rate R of different time periods in the continuous time T is obtained through calculation. Therefore, in the measuring method, the cooling and sun-protection performance of the umbrella in the real use process can be intuitively reflected through the comparison of the temperature difference rate R values, and the accuracy of the measuring method for measuring the cooling performance of the umbrella is high.
Optionally, the method further includes a step S5, where the step S5 is that the control system obtains the fluctuation size of the temperature difference rate according to the temperature difference rate R obtained in the step S4, which changes in the continuous time t.
Optionally, in step S5, the durability performance grades are classified according to the fluctuation of the temperature difference rate R in different time t.
Optionally, in the steps S2-S4, the step S1 is performed in the environment of the illumination intensity e, and in the step S1, the environment of the illumination intensity e means that the illumination intensity e of the solar light source simulated by the illumination device is not less than 7 ten thousand Lux.
Meanwhile, the invention also provides a system for measuring the cooling performance of the umbrella, which is implemented by adopting the method for measuring the cooling performance of the umbrella, and comprises the following steps: the illumination device is arranged above the umbrella to be tested and used for simulating a real solar light source; the illumination intensity detection device is used for detecting the illumination intensity emitted by the illumination device; the temperature acquisition device comprises a first temperature acquisition device and a second temperature acquisition device, the first temperature acquisition device is used for acquiring the temperature in the umbrella to be measured, and the second temperature acquisition device is used for acquiring the temperature outside the umbrella to be measured; and the control system is respectively connected with the illumination device, the illumination intensity detection device, the first temperature acquisition device and the second temperature acquisition device.
Optionally, the first temperature acquisition devices are provided with a plurality of first temperature acquisition devices, and the plurality of first temperature acquisition devices are respectively arranged on the umbrella fabric, the umbrella ribs and the umbrella rod of the umbrella to be tested.
Optionally, the second temperature acquisition device is arranged on the outer surface of the umbrella to be tested or above the umbrella to be tested.
Optionally, the first temperature acquisition device is disposed at a position 1/2 of a linear distance between an edge of an umbrella cover of the umbrella to be measured and the umbrella rod.
Optionally, the test device further comprises a fixing frame, and the fixing frame is used for placing the umbrella to be tested.
Optionally, the temperature acquisition device is of a thermal resistance type or a thermocouple type.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
(1) according to the measurement method for the cooling performance of the umbrella, the umbrella to be detected is placed in the environment with the set illumination intensity e for at least 10 minutes in an unfolded mode, so that the influence of the temperature and the humidity in the environment on the umbrella to be detected can be effectively avoided, a real use scene is simulated, and the accuracy of subsequent detection is improved; meanwhile, under the environment of setting the illumination intensity e, the internal temperature and the external temperature of the umbrella to be tested in the continuous time T are monitored in real time through a plurality of temperature acquisition devices, then the temperature difference delta T between the internal temperature and the external temperature of the umbrella to be tested is obtained through analysis of a control system, and finally the temperature difference rate R of different time periods in the continuous time T is obtained through calculation. Therefore, in the measuring method, the cooling and sun-protection performance of the umbrella in the real use process can be intuitively reflected through the comparison of the temperature difference rate R value, and the accuracy of the measuring method for measuring the cooling performance of the umbrella is high.
(2) According to the measurement method for the cooling performance of the umbrella, the fluctuation size of the temperature difference rate R is obtained through the control system according to the temperature difference rate R which is obtained in the step S5 and changes in the continuous time t. According to the fluctuation of the temperature difference rate, the stability of the sun-screening and cooling performance and the durability of the sun-screening and cooling performance at the same sun-screening and cooling performance level can be obtained, the cognition of consumers and enterprises on the sun-screening and cooling performance of the umbrella can be better helped, the grade standard of the sun-screening and cooling performance of the umbrella can be better measured, and the intuitive wide cognition on the sun-screening and cooling performance of the umbrella in the industry can be formed.
(3) In the measurement method for the cooling performance of the umbrella, the steps S2-S4 are all performed in the environment of the illumination intensity e in the step S1, the influence of the temperature and the humidity in the environment on the umbrella can be effectively reduced, a real use scene is simulated, and the result of subsequent detection is improved.
(4) According to the measurement system for the cooling performance of the umbrella, the unfolded umbrella to be detected is placed under the illumination device used for simulating a real solar light source, the illumination intensity detection device feeds the detected illumination intensity back to the control unit, and the control unit controls the illumination device according to the fed-back illumination intensity information, so that the illumination intensity emitted by the illumination device is in a set illumination intensity, the whole measurement process of the umbrella to be detected is ensured to be detected in the environment with the set illumination intensity, the arrangement effectively avoids the influence of temperature and humidity in the environment on the umbrella to be detected, a real use scene is simulated, and the accuracy of subsequent detection is further improved; meanwhile, the first temperature acquisition device and the second temperature acquisition device acquire the temperature inside the umbrella and the temperature outside the umbrella of the umbrella to be measured in real time under a real use scene, then the control system analyzes according to the temperature data fed back by the first temperature acquisition device and the second temperature acquisition device to obtain the temperature difference delta T between the temperature inside the umbrella and the temperature outside the umbrella, and finally the temperature difference rate R is obtained through calculation. Therefore, the measuring system in the embodiment can visually reflect the cooling performance of the umbrella in the real use process, and the accuracy of the measured cooling performance is high.
Drawings
Fig. 1 is a schematic flow chart of a method for measuring the cooling performance of an umbrella according to an embodiment of the present invention.
Detailed Description
For a further understanding of the present invention, reference will now be made in detail to the embodiments illustrated in the drawings.
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings. The terms first, second, and the like in the present invention are provided for convenience of describing the technical solution of the present invention, and have no specific limiting effect, but are all generic terms, and do not limit the technical solution of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
With reference to fig. 1, the present embodiment provides a method for measuring cooling performance of an umbrella, including the following steps:
s1, placing the umbrella to be tested with the plurality of temperature acquisition devices in an environment with set illumination intensity e, and unfolding for at least 10 minutes;
s2, acquiring the temperature Ti in the umbrella and the temperature To outside the umbrella of the umbrella To be detected in real time by the temperature acquisition device within the continuous time t;
s3, analyzing by the control system according To the temperature Ti in the umbrella and the temperature To outside the umbrella of the umbrella To be detected, which are acquired by the temperature acquisition device, To obtain a temperature difference delta T;
s4, calculating the temperature difference rate R between the temperature Ti in the umbrella To be measured and the temperature To outside the umbrella, wherein R is delta T/To multiplied by 100%.
In this embodiment, the magnitude of the temperature difference rate R represents the cooling and sun-screening performance, the larger the temperature difference rate R is, the better the cooling and sun-screening performance of the umbrella is, and the smaller the temperature difference rate R is, the worse the cooling and sun-screening performance of the umbrella is. In the embodiment, the umbrella to be detected is placed in the environment with the set illumination intensity e for at least 10 minutes in an unfolded manner, so that the influence of the temperature and the humidity in the environment on the umbrella to be detected can be effectively avoided, a real use scene is simulated, and the accuracy of subsequent detection is improved; meanwhile, under the environment of setting the illumination intensity e, the internal temperature and the external temperature of the umbrella to be tested in the continuous time T are monitored in real time through a plurality of temperature acquisition devices, then the temperature difference delta T between the internal temperature and the external temperature of the umbrella to be tested is obtained through analysis of a control system, and finally the temperature difference rate R of different time periods in the continuous time T is obtained through calculation. Therefore, in the measuring method, the cooling and sun-protection performance of the umbrella in the real use process can be intuitively reflected through the comparison of the temperature difference rate R value, and the accuracy of the measuring method for measuring the cooling performance of the umbrella is high.
In order to better prove that the cooling and sun-screening performance of the umbrella can be accurately detected by adopting the measuring method of the application and reflect the cooling and sun-screening performance of the umbrella in the real use scene process more visually, the applicant of the application selects the common 6 umbrellas with cooling functions and the same type in different brands on the market as samples to be detected, and represents the umbrellas with the same type in different brands through sample numbers, the cooling performance is detected according to the measuring method of the application, under the environment with the same illumination intensity e, the umbrella internal temperature and the umbrella external temperature of the samples to be detected in different time periods within 30min continuously are collected through a plurality of temperature collecting devices, and then the umbrella external temperature T corresponding to different time periods is obtained through the analysis of a control systemoThe temperature difference Δ T between the outside temperature and the inside temperature, and the temperature difference rate R, see table 1, table 2, and table 3 for specific results.
Table 1: outside temperature of umbrella in different time periods
Table 2: temperature difference of different brands of umbrellas in different time periods
Table 3: temperature difference rate of different brands of umbrellas in different time periods
Table 1 shows the outside temperature of the umbrella of 6 brands with the cooling function and the same type of umbrella detected in different time periods, table 2 shows the temperature difference of 6 brands with the cooling function and the same type of umbrella in different time periods, and table 3 shows the temperature difference rate of 6 brands with the cooling function and the same type of umbrella in different time periods. According to the data in tables 2 and 3, it can be visually reflected that among sample numbers 1 to 6, the cooling performance of the umbrellas of sample numbers 3 and 6 is better, and the cooling performance of the umbrellas of sample numbers 2 and 5 is worse. Therefore, the measuring method in the application can reflect the cooling and sun-screening performance of the umbrella in the real scene using process intuitively and accurately, measure the cooling and sun-screening performance accuracy of the umbrella, and can judge the cooling and sun-screening level according to the temperature difference rate of the umbrella to be measured while facilitating manufacturers to achieve reasonable quality control on the cooling and sun-screening performance of the umbrella, so that consumers can select correct brand products according to the temperature difference rate and select a proper umbrella according to the cooling and sun-screening level.
In practical application, in the steps S3-S5, the temperature T in the umbrella of the umbrella to be testediAnd the temperature T outside the umbrellaoRespectively mean the temperature T in the umbrella at the same time pointiTemperature T outside the umbrellaoDelta T being To-TiThe temperature difference rate R is ═ delta T/ToX 100%. By using the temperature T in the umbrella at the same time pointiTemperature T outside the umbrellaoThe method is simple to operate, and the temperature difference delta T and the temperature difference rate R can be quickly obtained.
In practical application, in the steps S3-S5, the temperature T in the umbrella of the umbrella to be testediAnd the temperature T outside the umbrellaoRespectively mean the average temperature T in the umbrella in the same time periodicAnd the average temperature T outside the umbrellaocDelta T being Toc-TicThe temperature difference rate R is ═ delta T/TocX 100%. By using the average temperature T in the umbrella in the same time periodicAnd the average temperature T outside the umbrellaocPartial error can be reduced, and the accuracy of temperature difference delta T and temperature difference rate R, namely the accuracy of the cooling performance of the umbrella can be improved
Example 2
With reference to fig. 1, compared with the technical solution of embodiment 1, the method for measuring the cooling performance of the umbrella of this embodiment further includes a step S5, where the step S5 is that the control system obtains the fluctuation size of the temperature difference rate according to the temperature difference rate R obtained in the step S4 and changing within the continuous time t.
In the embodiment, the value of the continuous time t is closely related to the habit of people using the umbrella in daily life, for example, when the habit of people using the umbrella outdoors is the time values of continuous use for half an hour, 1 hour, 1.5 hours and the like, when the sun-proof cooling performance test is carried out on the umbrella, the temperature difference rate is high, and the sun-proof cooling performance is good; calculating a variance value of the temperature difference rate R within the continuous time t, wherein the variance value represents the fluctuation of the sun-screening and cooling performances of the umbrella within the continuous time t, and if the variance value is small, the sun-screening and cooling performances are relatively stable; if t is long, it means that the durability of the umbrella at the sunscreen cooling level is good. Therefore, according to the fluctuation of the temperature difference rate, the stability of the sun-screening and cooling performance and the durability of the sun-screening and cooling performance at the same sun-screening and cooling performance level can be obtained, the cognition of consumers and enterprises on the sun-screening and cooling performance of the umbrella can be better helped, the grade standard of the sun-screening and cooling performance of the umbrella can be better measured, and the intuitive wide cognition on the sun-screening and cooling performance of the umbrella in the industry can also be formed.
Example 3
Compared with the technical scheme of the embodiment 2, in the step S5, the method for measuring the cooling performance of the umbrella performs the classification of the durability level under the same cooling and sun-screening performance level according to the fluctuation of the temperature difference rate R in different time t.
In practical application, when t is 30min, the temperature difference rate R of the umbrella to be tested basically reaches a stable level, and the durability grades under the same temperature reduction and sun protection performance level are divided into high grade, medium grade and low grade according to the fluctuation of the temperature difference rate R in different time t. The high degree means that the fluctuation change of the temperature difference rate R of the umbrella to be tested is small within 4-5 continuous hours, the medium degree means that the fluctuation change of the temperature difference rate R of the umbrella to be tested is small within 2-3 continuous hours, and the low degree means that the fluctuation change of the temperature difference rate R of the umbrella to be tested is small within 0.5-1.5 continuous hours. In order to better embody the durability grade under the same cooling and sun-screening performance level, the applicant selects 6 umbrellas with different brands but the cooling and sun-screening performance belongs to the same level as a sample to be tested, and the sample number represents the corresponding brand, and the temperature difference rate of different time periods with the continuous time t of 5 hours is shown in table 4 by adopting the measurement method in the application under the same illumination intensity.
Table 4: temperature difference rate of umbrella with same cooling and sun-proof performance level in different time periods
As can be seen from the data in Table 4, the temperature difference rates R of the sample number 2 and the sample number 6 in the sample numbers 1-6 can be visually reflected to have smaller fluctuation within 4-5 hours, which indicates that the cooling and sun-proof performances of the sample number 2 and the sample number 6 are stable and good in durability, and belong to high grades; the temperature difference rate R of the sample number 1 and the sample number 3 fluctuates little within 2-3 hours continuously, and compared with the sample number 2 and the sample number 6, the temperature reduction and sun protection performance and the durability of the sample number 1 and the sample number 3 are weak, and belong to a middle grade; the fluctuation of the temperature difference rate R between sample No. 4 and sample No. 5 was small within 0.5 to 1.5 hours, and the cooling and sun-screening performance and durability of sample No. 4 and sample No. 5 were inferior to those of sample No. 1 and sample No. 3, and they were low. Therefore, by adopting the measuring method of the embodiment to classify the durability level of the same cooling and sun-screening performance level, a consumer or a manufacturer can learn the cooling and sun-screening performance of the umbrella more deeply according to the durability level, and the grade standard of the cooling and sun-screening performance of the umbrella is better measured.
Example 4
Compared with the technical scheme of the embodiment 1, in the method for measuring the cooling performance of the umbrella, the steps S2-S4 are all performed in the environment of the illumination intensity e in the step S1, and in the step S1, the environment of the illumination intensity e means that the illumination intensity e irradiated on the umbrella surface of the umbrella to be measured by the solar light source simulated by the illumination device is not lower than 7 ten thousand Lux. The device can effectively reduce the influence of temperature and humidity on the umbrella in the environment, simulate a real use scene and improve the result of subsequent detection.
Example 5
The embodiment provides a system for measuring the cooling performance of an umbrella, which is implemented by using the method for measuring the cooling performance of the umbrella in any one of the technical schemes of embodiments 1 to 4, and includes:
the illumination device is arranged above the umbrella to be tested and used for simulating a real solar light source;
the illumination intensity detection device is used for detecting the illumination intensity emitted by the illumination device;
the temperature acquisition device comprises a first temperature acquisition device and a second temperature acquisition device, the first temperature acquisition device is used for acquiring the temperature in the umbrella to be measured, and the second temperature acquisition device is used for acquiring the temperature outside the umbrella to be measured;
and the control system is respectively connected with the illumination device, the illumination intensity detection device, the first temperature acquisition device and the second temperature acquisition device.
In the embodiment, the unfolded umbrella to be detected is placed under the illumination device for simulating a real solar light source, the illumination intensity detection device feeds the detected illumination intensity back to the control unit, and the control unit controls the illumination device according to the fed-back illumination intensity information, so that the illumination intensity emitted by the illumination device is at a set illumination intensity, the whole measurement process of the umbrella to be detected is ensured to be detected in an environment with the set illumination intensity, the setting effectively avoids the influence of temperature and humidity in the environment on the umbrella to be detected, a real use scene is simulated, and the accuracy of subsequent detection is further improved; meanwhile, the first temperature acquisition device and the second temperature acquisition device acquire the temperature inside the umbrella and the temperature outside the umbrella of the umbrella to be measured in real time under a real use scene, then the control system analyzes according to the temperature data fed back by the first temperature acquisition device and the second temperature acquisition device to obtain the temperature difference delta T between the temperature inside the umbrella and the temperature outside the umbrella, and finally the temperature difference rate R is obtained through calculation. Therefore, the measuring system in the embodiment can visually reflect the cooling performance of the umbrella in the real use process, and the accuracy of the measured cooling performance is high.
Example 6
Compared with the technical scheme of embodiment 5, the measurement system for the cooling performance of the umbrella of the embodiment has the advantages that the first temperature acquisition devices are multiple, and the multiple first temperature acquisition devices are respectively arranged on the umbrella cover, the umbrella ribs and the umbrella rod of the umbrella to be measured. Through setting up first temperature acquisition device on the suitable position of rib, umbrella face and the umbrella pole of the umbrella that awaits measuring, the temperature in the umbrella that awaits measuring is convenient for accurate acquisition of this first temperature acquisition device that sets up. In practical application, the first temperature acquisition devices are axially and uniformly arranged along the inner surface of the umbrella cover of the umbrella to be measured.
In practical application, the first temperature acquisition device is fixed on the inner surface of the umbrella to be measured in a sticking mode, for example, the first temperature acquisition device is fixed on the inner surface of the umbrella to be measured through an adhesive tape. The first temperature acquisition device on the umbrella rib is fixed through the dovetail clip.
In practical application, if the number of the umbrella ribs is an odd number, the first temperature acquisition devices are arranged at the positions of every two umbrella ribs, and if the number of the umbrella ribs is an odd number, the first temperature acquisition devices are arranged at the positions of every 1 umbrella rib. The temperature in the umbrella can be improved by the arrangement.
Example 7
Compared with the technical scheme of embodiment 5, the measurement system for the cooling performance of the umbrella of the embodiment has the advantages that the second temperature acquisition device is arranged on the outer surface of the umbrella to be measured or the second temperature acquisition device is arranged above the umbrella to be measured. The second temperature acquisition device is arranged on the outer surface of the umbrella to be detected, so that the temperature outside the umbrella can be accurately acquired; locate second temperature acquisition device the top of the umbrella that awaits measuring can reduce the interference of the temperature in the umbrella face of the umbrella that awaits measuring to second temperature acquisition device, improves the accuracy of the outer temperature of umbrella.
Example 8
Compared with the technical scheme of embodiment 6, the measurement system for the cooling performance of the umbrella of the embodiment has the advantages that the first temperature acquisition device is arranged at the 1/2 position of the linear distance between the edge of the umbrella surface of the umbrella to be measured and the umbrella rod.
Because people are in the open air, especially when illumination intensity is stronger, people use the umbrella that has the cooling function, and the main part that can experience the cooling effect is head and face, and this embodiment is equipped with first temperature acquisition device through 1/2 positions department at the umbrella face edge of the umbrella that awaits measuring to the straight-line distance between the umbrella pole, the temperature in the acquisition umbrella that can be accurate, and then improves the accuracy of the temperature difference rate of temperature and the outside temperature of umbrella in the umbrella.
In the actual application, first temperature acquisition device has a plurality ofly, evenly sets up in the 1/2 position department of the different points at the umbrella face edge of the umbrella that awaits measuring to umbrella pole department shortest distance, and contained angle between the adjacent first temperature acquisition device is 45 degrees, is connected through the nylon rope between the umbrella face edge of the umbrella that awaits measuring and the umbrella pole, and the center department of nylon rope is located to first temperature acquisition device, the one end and the umbrella pole of nylon rope are connected, the other end of nylon rope passes through the forked tail and presss from both sides the umbrella face edge of fixing at the umbrella that awaits measuring through the forked tail and go up
Example 9
Compared with the technical scheme of the embodiment 5, the measurement system for the cooling performance of the umbrella further comprises a fixing frame, and the fixing frame is used for placing the umbrella to be measured. Through setting up the mount, the umbrella that awaits measuring struts the back of being convenient for is placed.
Example 10
Compared with the technical scheme of the embodiment 5, the measurement system for the temperature drop performance of the umbrella has the advantages that the temperature acquisition device is in a thermal resistance type or a thermocouple type. The temperature acquisition device is of a thermal resistance type or a thermocouple type, and can quickly and accurately detect the change of temperature.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
Claims (10)
1. A measurement method for the cooling performance of an umbrella is characterized by comprising the following steps:
s1, placing the umbrella to be tested with the plurality of temperature acquisition devices in an environment with set illumination intensity e, and unfolding for at least 10 minutes;
s2, in the continuous time T, the temperature acquisition device acquires the umbrella internal temperature T of the umbrella to be measured in real timeiAnd the temperature T outside the umbrellao；
S3, controlling the temperature T in the umbrella of the umbrella to be measured according to the temperature collected by the temperature collecting deviceiAnd the temperature T outside the umbrellaoAnalyzing to obtain a temperature difference delta T;
s4, calculating the umbrella internal temperature T of the umbrella to be measurediAnd the temperature T outside the umbrellaoThe temperature difference rate R, R ═ delta T/To×100﹪。
2. The method for measuring the cooling performance of an umbrella as claimed in claim 1, further comprising a step S5, wherein the step S5 is implemented by the control system to obtain the fluctuation size of the temperature difference rate according to the temperature difference rate R obtained in the step S4, which changes in the continuous time t.
3. The method for measuring the cooling performance of an umbrella as claimed in claim 2, wherein in step S5, the durability performance grade is classified according to the fluctuation of the temperature difference R in different time t.
4. The method for measuring the cooling performance of an umbrella as claimed in claim 1, wherein the steps S2-S4 are all performed under the illumination intensity e environment described in the step S1, and in the step S1, the illumination intensity e environment means that the illumination intensity e irradiated on the umbrella surface of the umbrella to be measured by the solar light source simulated by the illumination device is not less than 7 ten thousand Lux.
5. A measurement system for the cooling performance of an umbrella, which is implemented by the measurement method for the cooling performance of the umbrella as claimed in any one of claims 1 to 4, and comprises:
the illumination device is arranged above the umbrella to be tested and used for simulating a real solar light source;
the illumination intensity detection device is used for detecting the illumination intensity emitted by the illumination device;
the temperature acquisition device comprises a first temperature acquisition device and a second temperature acquisition device, the first temperature acquisition device is used for acquiring the temperature in the umbrella to be measured, and the second temperature acquisition device is used for acquiring the temperature outside the umbrella to be measured;
and the control system is respectively connected with the illumination device, the illumination intensity detection device, the first temperature acquisition device and the second temperature acquisition device.
6. The system for measuring the cooling performance of the umbrella according to claim 5, wherein the first temperature acquisition devices are provided in plurality, and the plurality of first temperature acquisition devices are respectively arranged on the umbrella surface, the umbrella ribs and the umbrella rod of the umbrella to be measured.
7. The system for measuring the cooling performance of the umbrella as claimed in claim 5, wherein the second temperature acquisition device is disposed on the outer surface of the umbrella to be measured or above the umbrella to be measured.
8. The system for measuring the cooling performance of the umbrella according to claim 6, wherein the first temperature acquisition device is arranged at the position 1/2 of the linear distance between the edge of the umbrella surface of the umbrella to be measured and the umbrella rod.
9. The system for measuring the cooling performance of an umbrella as claimed in claim 5, further comprising a fixture for placement of the umbrella to be tested.
10. A system for measuring the cooling performance of an umbrella as claimed in claim 5, wherein the temperature acquisition means is of the thermoresistive or thermocouple type.
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| CN202110639384.1A CN113376082A (en) | 2021-06-08 | 2021-06-08 | Method and system for measuring cooling performance of umbrella |
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| CN202110639384.1A CN113376082A (en) | 2021-06-08 | 2021-06-08 | Method and system for measuring cooling performance of umbrella |
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| CN112816519A (en) * | 2020-12-29 | 2021-05-18 | 中车工业研究院有限公司 | Device and method for measuring comprehensive performance of photo-thermal fabric |
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- 2021-06-08 CN CN202110639384.1A patent/CN113376082A/en active Pending
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