CN106500893B - Method for testing comfortable pressure threshold of pressure garment - Google Patents
Method for testing comfortable pressure threshold of pressure garment Download PDFInfo
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- CN106500893B CN106500893B CN201610883947.0A CN201610883947A CN106500893B CN 106500893 B CN106500893 B CN 106500893B CN 201610883947 A CN201610883947 A CN 201610883947A CN 106500893 B CN106500893 B CN 106500893B
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- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
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Abstract
The invention relates to a method for testing a pressure comfortable threshold of a pressure garment, which is characterized by comprising the following steps of: designing and manufacturing a double-ring buckle type elastic bandage; selecting a pressure comfort threshold test point on a human body; the pressure comfort threshold and the differential pressure threshold of each test point are tested based on a psychophysical step-limit method. Compared with the prior art, the method disclosed by the invention has the advantages that the pressure comfort threshold limit is tested and calculated based on a limit-step method of psychophysics, the test result is more accurate than that of a traditional mental scale evaluation method based on a limited size change sample clothing wearing test, and the influence of clothing style, structure and the like on the pressure comfort range is effectively avoided. The method is characterized in that the perception discrimination capability of each part on the minimum pressure stimulation can be represented by testing and calculating the threshold limit of differential pressure based on a limit-step method in psychophysics.
Description
Technical Field
The invention relates to a method for testing and calculating pressure comfortable threshold and differential pressure threshold of pressure clothes, which is suitable for testing and calculating the pressure comfortable threshold and the differential pressure threshold of various pressure clothes, wherein the pressure clothes comprise tight-fitting sport clothes, body-shaping clothes, pressure socks, pressure bandages and the like.
Background
Pressure clothes, namely clothes capable of generating pressure at specific parts of a human body, comprising body shaping clothes and trousers with the effects of enlarging breast, contracting abdomen, lifting buttocks and beautifying legs; medical socks and bandages with functions of improving blood circulation of lower limbs, relieving and treating venous diseases; the body-fitting sports clothes such as riding clothes and the like have the functions of promoting in-vivo microcirculation and enhancing sports functions. The size and distribution of the pressure of the clothes are the key for realizing the functions and are the main aspects causing uncomfortable wearing of the human body.
Different parts of the human body have different sensing and distinguishing capabilities on pressure distribution, and the maximum comfortable pressure which can be born by the parts is also different. For the design and manufacture of pressure garments, it is important to define the pressure comfort range. A large number of researchers conduct objective pressure distribution tests on different types of pressure clothes, such as bras, body-shaping trousers, sports underwear and the like, and explore pressure clothes pressure comfort ranges by adopting a subjective psychological scale scoring method. For a specific type of pressure garment in these studies, the size is generally changed at 3 or 4 levels, the active range is limited, the obtained pressure comfort and discomfort mapping range is low in accuracy, and the size is limited to a specific garment style. For the difference threshold, the method is often used for perception of sense such as hearing and touch, and has not been applied to characterization of garment pressure distinguishing capability.
Disclosure of Invention
To overcome the above-mentioned deficiencies of the prior art, it is an object of the present invention to provide a method for performing tests and calculating garment pressure comfort and differential garment pressure thresholds based on a psychophysics ladder-limit method.
In order to achieve the purpose, the technical scheme of the invention is to provide a method for testing a pressure comfort threshold of a pressure garment, which is characterized by comprising the following steps of:
firstly, wearing an elastic bandage with continuously increased and decreased pressure for a testee, gradually increasing the pressure until the testee cannot bear the elastic bandage, remembering the pressure feelings and the corresponding comfort degrees of different degrees by the testee, and then gradually decreasing the pressure, so that the testee can confirm the pressure feelings and the comfort degrees of different degrees again;
secondly, fixing a pressure sensor on each test point of the part to be tested of the testee, and wearing a pressure garment for the testee;
thirdly, the pressure comfort degree of the part to be tested is evaluated by the testee, the part to be tested is judged to be comfortable or uncomfortable, the record is made, and meanwhile, the pressure value of the pressure sensor at the current time is recorded;
step four, gradually increasing the pressure value of the pressure garment on the part to be tested, wherein the increase amplitude is APa, repeating the step three until the pressure comfort evaluation of the tested part by the tested person approaches discomfort, and entering the step five;
fifthly, gradually increasing the pressure value of the pressure garment on the part to be tested, wherein the increase amplitude is BPa, B is less than A, and repeating the third step until the pressure comfort degree of the part to be tested of the testee is evaluated to be uncomfortable;
sixthly, on the basis of the fifth step, continuously increasing the clothing pressure, wherein the increasing amplitude is APa, then gradually reducing the pressure value of the pressure clothing to the part to be tested, the reducing amplitude is BPa, and repeating the third step until the pressure comfort level of the tested person to the part to be tested is evaluated to be comfortable;
step seven, returning to the step four to circularly execute the step four and the step six for N times, and then entering the step eight;
eighth step, if the pressure comfort threshold of the part to be tested is P, then
In the formula (I), the compound is shown in the specification,
when the fourth step and the sixth step are executed for the ith time and the pressure comfort degree of the tested part is evaluated to be uncomfortable for the first time by the tested person, the pressure value of the pressure sensor,
and when the sixth step is executed for the ith time, the pressure comfort degree of the tested part is firstly evaluated to be comfortable by the tested person, and the pressure value of the pressure sensor is obtained.
Preferably, the elastic bandage adopts a double-ring buckle type elastic bandage, the double-ring buckle type elastic bandage comprises a bandage and two rectangular frame rings, and the two rectangular frame rings are movably arranged in a channel formed by folding one end of the bandage respectively.
Preferably, in the first step, the method for gradually increasing or decreasing the pressure by using the double-ring buckle type elastic bandage is as follows: the bandage at one end is passed through two rectangular frames at the same time, then the double-ring buckle is separated, and passed through the rectangular frame ring which is close to the bandage edge, and passed through another rectangular frame ring, when the size of bandage is regulated, the unclosed end is stretched.
Preferably, when the test points are selected, the human body is divided into a plurality of areas, the areas which are easy to feel uncomfortable when the pressure garment is worn are determined through questionnaire investigation, the pressure values are tested in each area of the human body, the pressure distribution condition of the pressure garment worn on the human body is determined, and then representative test points are screened out.
Preferably, in the fifth step, after the comfort level of the pressure of the part to be tested is evaluated as uncomfortable for the first time, the pressure is continuously increased once to ensure that the testee still feels uncomfortable.
Preferably, the method further comprises the ninth step of:
on the basis of the obtained pressure comfort threshold value P, 2-3 pressure stimulation quantities are selected as standard stimulation, an elastic bandage is used for applying pressure stimulation groups with ascending sequences and descending sequences, the testee compares the intensity of each pressure stimulation and the standard stimulation in a control pressure stimulation group each time, the answer of the testee is recorded and is respectively greater than, equal to or less than, the pressure stimulation groups with the ascending sequences and the pressure stimulation groups with the descending sequences are alternately compared with the standard stimulation to obtain an upper limit and a lower limit, and the upper limit refers to the average value of the minimum stimulation value which is felt by the testee to be greater than the standard stimulation and the maximum stimulation value which is felt to be equal to the standard stimulation; the lower limit refers to the average of the maximum stimulus value felt by the subject to be smaller than the standard stimulus and the minimum stimulus value felt to be equal to the standard stimulus, the upper limit minus the lower limit is the spacing that is not affirmative, and the difference threshold is equal to half the value of the spacing that is not affirmative.
Compared with the prior art, the invention has the beneficial effects that:
1. the double-ring-buckle elastic bandage designed and manufactured in the invention greatly improves the possibility of continuous equidistant change of pressure by combining the double-ring buckle and the elastic bandage.
2. The method for testing and calculating the pressure comfort threshold limit based on the limit-step method of psychophysics is more accurate than the test result of a traditional mental scale evaluation method based on a limited size change sample clothes wearing test, and effectively avoids the influence of clothes style, structure and the like on the pressure comfort range. The method is characterized in that the perception discrimination capability of each part on the minimum pressure stimulation can be represented by testing and calculating the threshold limit of differential pressure based on a limit-step method in psychophysics.
3. The pressure comfortable threshold and the differential pressure threshold of the pressure garment obtained based on the limit-step method in the psychophysics can provide basic data for the design and manufacture, the wearing comfort and the safety of the pressure garment.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
The following examples all use double loop fastening type elastic bandages capable of controlling the elongation length of the elastic bandage as desired and fixing at a predetermined elongation position. The two rectangular frame rings are respectively movably arranged in a channel which is folded at one end of the bandage. The rectangular frame ring is made of high-hardness plastic or stainless steel material, and has a width of 2-3cm, a length of 5-15cm and a wire diameter of 2-4 mm. The bandage is made of cotton, terylene, nylon and spandex, has a width of 5-15cm, a length determined by the circumference of the tested part, generally 20-30cm longer than the circumference, and an elastic recovery rate of more than 95% when the bandage is extended by 50%.
When the double-ring buckle type elastic bandage is used for testing, the bandage at one end penetrates through the two rings at the same time, then the double-ring buckle is separated, and the bandage bypasses the ring which is closer to the bandage edge and then penetrates through the other ring. The unclosed end is stretched when the size of the bandage is adjusted.
When test points are selected, a human body is divided into a plurality of areas, the areas which are easy to feel uncomfortable when the pressure garment is worn are determined through questionnaire investigation, pressure values are tested in all the areas on the human body, the pressure distribution condition of the pressure garment worn on the human body is determined, and then representative test points are screened. Meanwhile, the instrument for testing the pressure distribution of the clothes is an air bag type pressure testing system of Japan AMI 3037-10.
Example 1: testing and calculation of pressure comfort threshold for abdominal bumps
Step 1, a testee firstly enters a laboratory, a mark point is pasted on a designated position of a human body (for facilitating the consistency of subsequent measurement positions and avoiding errors), and the testee naturally stands and hangs down two arms when marking.
And 2, wearing the elastic bandage on the testee, gradually reducing the size of the bandage to gradually increase the pressure, so that the testee remembers the pressure feelings with different degrees and the corresponding comfort levels until the testee cannot bear the pressure feelings and the corresponding comfort levels (cannot continuously wear the elastic bandage in the daytime), and then gradually reducing the pressure to ensure that the testee confirms the pressure feelings and the comfort levels with different degrees again.
And 3, fixing a pressure sensor on the mark points of the test part, and adjusting the size of the sample worn by the testee (keeping the test point to pass through the horizontal central line of the sample) to be fit or slightly smaller than the size of the testee.
And 4, requiring the two hands of the tested person to naturally droop, keeping the tested person in a static standing state for several seconds in the state, and fully sensing the pressure feeling of the test part caused by the test sample. The experimenter records the approximate pressure values over time and allows the subject to evaluate the pressure comfort at the test site. Record "+" when comfortable and "-" when uncomfortable;
step 5, stretching the sample by the experimenter, increasing the pressure value, enabling the experimenter to fully feel the pressure and then answer whether the experimenter is comfortable or not, meanwhile, scoring the pressure comfort level of the tested part, and recording "+" when the experimenter is comfortable and "-" when the experimenter is uncomfortable;
step 6, repeating the step 5, when the comfort evaluation of the testee is close to uncomfortable, changing the pressure increase amplitude of 200Pa to about 100Pa each time, keeping the testee in a static state for a plurality of seconds after the pressure change, recording corresponding pressure values, and enabling the testee to evaluate the pressure comfort of the tested part;
and 7, continuously increasing the pressure once to ensure that the testee still feels uncomfortable after the testee reacts uncomfortably for the first time, then gradually reducing the pressure (100 Pa each time) until the testee reacts comfortably again, continuously reducing the pressure to ensure that the testee continuously reacts comfortably for two times, gradually increasing the pressure until the testee reacts uncomfortably again, and repeating the steps for 6 times in a circulating way. The results of the test of the subject at the abdominal convex point after the measurement of one test site are shown in table 1.
The subjects abdominal bump absolute pressure comfort threshold is:
((1.16+1.36)/2+(1.03+1.24)/2+(1.05+1.28)/2+(1.07+1.17)/2+(0.85+1.19)/2+(0.95+1.14)/2)/6＝1.12(kPa)
watch 1
Example 2: test and calculation of differential pressure threshold at mid-thigh posterior center point of subject
Control garment pressure values are taken around the comfort threshold range, if the pressure comfort threshold for the subject at the mid-thigh posterior center point is 2640Pa, then three control garment pressure values are taken, as shown in table 2, 1000Pa, 2000Pa and 3000Pa respectively. Firstly, adjusting from 2000Pa downwards, reducing the pressure by about 100-200Pa each time, enabling an experimental subject to feed back whether the pressure is greater than or equal to 1000Pa, and completing one set of actions when the feedback of the experimenter is smaller than 1000 Pa; then, the pressure is adjusted from 500Pa to up, and increased by about 100-200Pa each time, so that the experimenter feeds back whether the pressure is larger than or smaller than 1000Pa or equal to each other, and when the feedback of the experimenter is larger than 1000Pa, one set of actions is finished again. The above two sets of actions are repeated again. The difference threshold value of the point at 1000Pa is obtained by taking the average value of two adjacent clothing pressures from greater than the difference threshold value to equal to the difference threshold value as the upper limit, taking the average value of two adjacent pressures from less than the difference threshold value to equal to the difference threshold value as the lower limit, subtracting the average value of the 4 lower limits from the average value of the 4 upper limits, and dividing by 2. The other differential threshold test methods were the same at 2000Pa, 3000 Pa.
Watch two
Claims (6)
1. A method for testing a pressure comfort threshold of a pressure garment is characterized by comprising the following steps:
firstly, wearing an elastic bandage with continuously increasing and decreasing pressure for a testee, gradually increasing the pressure until the testee cannot continuously wear the elastic bandage in the daytime, so that the testee remembers pressure feelings with different degrees and corresponding comfort levels, and then gradually decreasing the pressure, so that the testee can confirm the pressure feelings with different degrees and the comfort levels again;
secondly, fixing a pressure sensor on each test point of the part to be tested of the testee, and wearing a pressure garment for the testee;
thirdly, the pressure comfort degree of the part to be tested is evaluated by the testee, the part to be tested is judged to be comfortable or uncomfortable, the record is made, and meanwhile, the pressure value of the pressure sensor at the current time is recorded;
step four, gradually increasing the pressure value of the pressure garment on the part to be tested, wherein the increase amplitude is APa, repeating the step three until the pressure comfort evaluation of the tested part by the tested person approaches discomfort, and entering the step five;
fifthly, gradually increasing the pressure value of the pressure garment on the part to be tested, wherein the increase amplitude is BPa, B is less than A, and repeating the third step until the pressure comfort degree of the part to be tested of the testee is evaluated to be uncomfortable;
sixthly, on the basis of the fifth step, continuously increasing the clothing pressure, wherein the increasing amplitude is APa, then gradually reducing the pressure value of the pressure clothing to the part to be tested, the reducing amplitude is BPa, and repeating the third step until the pressure comfort level of the tested person to the part to be tested is evaluated to be comfortable;
step seven, returning to the step four to circularly execute the step four and the step six for N times, and then entering the step eight;
eighth step, if the pressure comfort threshold of the part to be tested is P, then
In the formula (I), the compound is shown in the specification,
when the fourth step and the sixth step are executed for the ith time and the pressure comfort degree of the tested part is evaluated to be uncomfortable for the first time by the tested person, the pressure value of the pressure sensor,
and when the sixth step is executed for the ith time, the pressure comfort degree of the tested part is firstly evaluated to be comfortable by the tested person, and the pressure value of the pressure sensor is obtained.
2. The method of claim 1, wherein the elastic bandage is a double-ring buckle type elastic bandage, and the double-ring buckle type elastic bandage comprises a bandage and two rectangular frames, and the two rectangular frames are movably disposed in the folded channel at one end of the bandage.
3. The method for testing the pressure comfort threshold of a pressure garment according to claim 2, wherein in the first step, the method for gradually increasing or decreasing the pressure by using the double-ring buckle elastic bandage comprises: the bandage at one end is passed through two rectangular frames at the same time, then the double-ring buckle is separated, and passed through the rectangular frame ring which is close to the bandage edge, and passed through another rectangular frame ring, when the size of bandage is regulated, the unclosed end is stretched.
4. The method for testing the pressure comfort threshold of the pressure garment according to claim 1, wherein the test points are selected by dividing the human body into a plurality of regions, determining regions which are easy to feel uncomfortable when the pressure garment is worn through questionnaire investigation, testing pressure values in each region of the human body, determining the distribution of the pressure garment worn on the human body, and screening out representative test points.
5. The method for testing the pressure comfort threshold of a pressure garment as claimed in claim 1, wherein in the fifth step, after the pressure comfort of the part to be tested is first evaluated as uncomfortable, the pressure is continuously increased once to ensure that the tested person still feels uncomfortable.
6. The method for testing the pressure comfort threshold of a compression garment as claimed in claim 1, further comprising a ninth step of:
on the basis of the obtained pressure comfort threshold value P, 2-3 pressure stimulation quantities are selected as standard stimulation, an elastic bandage is used for applying pressure stimulation groups with ascending sequences and descending sequences, the testee compares the intensity of each pressure stimulation and the standard stimulation in a control pressure stimulation group each time, the answer of the testee is recorded and is respectively greater than, equal to or less than, the pressure stimulation groups with the ascending sequences and the pressure stimulation groups with the descending sequences are alternately compared with the standard stimulation to obtain an upper limit and a lower limit, and the upper limit refers to the average value of the minimum stimulation value which is felt by the testee to be greater than the standard stimulation and the maximum stimulation value which is felt to be equal to the standard stimulation; the lower limit refers to the average of the maximum stimulus value felt by the subject to be smaller than the standard stimulus and the minimum stimulus value felt to be equal to the standard stimulus, the upper limit minus the lower limit is the spacing that is not affirmative, and the difference threshold is equal to half the value of the spacing that is not affirmative.
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| CN102184277A (en) * | 2011-03-22 | 2011-09-14 | 江南大学 | Novel method for selecting clothing pressure measuring point |
| CN104062421A (en) * | 2014-06-17 | 2014-09-24 | 北京服装学院 | Measuring system for comfort level of clothes |
| CN104337616A (en) * | 2013-08-06 | 2015-02-11 | 陕西逸夫美疗科技有限公司 | Pressure detecting elastic bandage |
| CN105559258A (en) * | 2015-12-18 | 2016-05-11 | 北京创新爱尚家科技有限公司 | Wearing apparel comfort level testing method and system |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0587721A (en) * | 1991-09-27 | 1993-04-06 | Hitachi Metals Ltd | Wear testing method and wear testing device |
| CN200948189Y (en) * | 2006-07-26 | 2007-09-19 | 时捷 | Pressure device of abdomen |
| CN102184277A (en) * | 2011-03-22 | 2011-09-14 | 江南大学 | Novel method for selecting clothing pressure measuring point |
| CN104337616A (en) * | 2013-08-06 | 2015-02-11 | 陕西逸夫美疗科技有限公司 | Pressure detecting elastic bandage |
| CN104062421A (en) * | 2014-06-17 | 2014-09-24 | 北京服装学院 | Measuring system for comfort level of clothes |
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