CN109655303A - A kind of mattress hardness graded quantitative test equipment, method and evaluation method - Google Patents
A kind of mattress hardness graded quantitative test equipment, method and evaluation method Download PDFInfo
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- 238000011156 evaluation Methods 0.000 title claims abstract description 27
- 238000012113 quantitative test Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000012360 testing method Methods 0.000 claims abstract description 71
- 238000006073 displacement reaction Methods 0.000 claims abstract description 8
- 238000004364 calculation method Methods 0.000 claims description 9
- 238000002474 experimental method Methods 0.000 claims description 7
- 230000000284 resting effect Effects 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 238000011002 quantification Methods 0.000 abstract description 5
- 210000003205 muscle Anatomy 0.000 description 8
- 230000002792 vascular Effects 0.000 description 6
- 230000006399 behavior Effects 0.000 description 5
- 230000036544 posture Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 210000001519 tissue Anatomy 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000002427 irreversible effect Effects 0.000 description 3
- 230000010412 perfusion Effects 0.000 description 3
- 230000003860 sleep quality Effects 0.000 description 3
- 206010054949 Metaplasia Diseases 0.000 description 2
- 208000004210 Pressure Ulcer Diseases 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 210000001217 buttock Anatomy 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000015689 metaplastic ossification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 210000004872 soft tissue Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 210000002414 leg Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007830 nerve conduction Effects 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000003319 supportive effect Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/001—Testing of furniture, e.g. seats or mattresses
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Abstract
The invention discloses a kind of mattress hardness graded quantitative test equipments, mobile bracket is installed on test platform and can be moved forward and backward, the load-displacement data that Mechanics Performance Testing device downwards is used to measure various discrete test point on mattress are provided on mobile bracket, Mechanics Performance Testing device is connected by route with host, test platform includes the rigid table top of surrounding stand and middle with hole, surrounding stand includes upper layer bracket and lower floor support, the wherein interior rigid table top for being equipped with middle with hole at the top of upper layer bracket, the fixed matching lower floor support in the rigid table top lower end of middle with hole, there are gas passages for every side middle section of lower floor support.The invention also discloses a kind of mattress hardness graded quantitative test method and evaluation methods.The present invention can provide scientific basis for the human oriented design and customization production of mattress, carry out hardness classification, the hardness level for having rated mattress of quantification to mattress by hardness number value.
Description
Technical field
The present invention relates to mattress hardness test technical fields more particularly to a kind of test of mattress hardness graded quantitativeization to set
Standby, method and evaluation method.
Background technique
Sleep is the guarantee of human body energy and antisecosis, and platform of the mattress as sleep, physical characteristic is to sleep matter
Amount has important influence.The hardness of mattress is to characterize an important aspect of mattress physical property, this is primarily due to, bed
The hardness of pad not only will affect the alleviation of pressure between people-bed, also will affect spine-supporting.The hardness of mattress be not easy it is excessive,
When the hardness of mattress is excessive, if the interface local pressure between people-bed is greater than the 2 of human body terminal parteriole vascular pressure
Again, i.e. when 9.33KPa (70mmHg), and 1~2h of pressure duration, so that it may block capillary to cause the perfusion of tissue
Histanoxia, pressing times are more than that 2h or more will cause the irreversible damage of human muscle's soft tissue.For Healthy People, people
Influence (normal condition of the people-bed interfacial pressure to human muscle's soft tissue can be reduced by the action behavior of the appropriateness such as turn
Under, turning over number every night is about 20 times or so), but excessively frequent action behavior can make sleep be difficult to protect off and in sleep
It holds, therefore, is unfavorable for the raising of sleep quality.Or long-term bed person limited for behavior is strong in load action time and effect
It spends under double influence, will lead to the formation of bedsore.When mattress is excessively soft, human body can deeply be fallen among mattress, human body turn over or
Posture adjusting needs to consume biggish energy, and human body turns over number and significantly reduces, and very few turn number will lead to body local
State in continuous compression to be unfavorable for the blood circulation and nerve conduction of human body, while being also unfavorable for human muscle's
Loosen；Furthermore when mattress is excessively soft, people-bed interfacial contact area increases, and it is wet that excessive contact area is unfavorable for people-bed interface
Gas distributes, and wet viscous people-bed interface microenvironment is unfavorable for the raising of sleep quality comfort.
In addition, when mattress is really up to the mark, people-bed interfacial pressure distribution is more concentrated, and when sleeping position of lying on the back, pressure focuses primarily upon stern
The apophysis position such as portion, shoulder, head, waist are in vacant state, lack support, are unfavorable for loosening all muscles and backbone keeps nature
State；Lateral sleeping position pressure focuses primarily upon big cripple's point, flank, shoulder and head, lies on one's side in the biggish mattress of hardness,
The stability of human body is poor, and in order to keep sleeping position, part muscle will be in tight force state, it is tired to will cause muscle for a long time
Labor.That is the mattress human spine really up to the mark that is unfavorable for is in loosening for natural torsion state and muscle.Once and backbone is in non-natural
Curved state, interverbebral disc compression just will increase.Mattress is excessively soft, and buttocks is easily deeply fallen among mattress, is also unfavorable for backbone
The state of natural torsion is kept, to also be unfavorable for that dmm is zero and muscle loosens.
It can thus be seen that the hardness of mattress has important role to human health, sleep quality etc..Many institute's weeks
Know, mattress to the support of human body is interacted between mattress entirety and human body weight as a result, but current mattress hardness
Evaluation mainly also rests on the test of mattress homogenous material and mattress is whole subjectively, qualitatively description etc., such as mattress
" soft ", " hard ", " hardness is moderate " etc. lack the standard for objectively, quantitatively testing and evaluating whole mattress hardness.In
The continuous expansion of state's mattress consumption market, mattress hardness evaluation cannot stay in again subjectively, qualitative description, it is necessary to pass through mark
Quasi- quantification is tested mattress hardness is evaluated and is classified, and consumer on the one hand can be helped to choose in this way and be suitable for certainly
On the other hand oneself mattress is also beneficial to the standardized designs and production of enterprise.
Meanwhile with the further development having furniture made to order, the quantification test and evaluation of mattress hardness is also mattress customization
The basis that metaplasia produces.This is primarily due to, and human body is personalized human body, and different people has different prompting and weight, without
Same prompting and weight has different needs hardness and the hardness distribution of mattress.Such as Asian lumbar vertebrae curve ratio America and Europe's ethnic group
Gently, occidentals due to the gap between lumbar vertebrae curve and mattress it is larger, in order to make backbone keep natural form, the entirety of mattress
Hardness is smaller, and the sinkage of especially seat area wants sufficiently large.So the selection for Chinese Consumer's to mattress hardness
Range is different from west, and the standard for the mattress hardness that western countries formulate is not suitable for Chinese yet.And it is domestic at present about
The mattress hardness measuring method of standard is also in space state, as the mark for formulating the classification of mattress hardness according to Chinese visible human figure
Standard is more a lack of.
Accordingly, it is badly in need of a kind of can produce for the human oriented design and customization of mattress at present and the mattress of scientific basis is provided
Hardness graded quantitative test equipment, method and evaluation method.
Summary of the invention
It can be the human oriented design and customization metaplasia of mattress technical problem to be solved by the present invention lies in providing a kind of
It produces and mattress hardness graded quantitative test equipment, method and the evaluation method of scientific basis is provided.
The present invention solves above-mentioned technical problem using following technical scheme:
A kind of mattress hardness graded quantitative test equipment, including test platform, mobile bracket, Mechanics Performance Testing dress
It sets, host, the mobile bracket is installed on test platform and can be moved forward and backward, and is provided with vertical court on the mobile bracket
Under Mechanics Performance Testing device be used to measure the load-displacement data of various discrete test point on mattress, the mechanical property
Test device is connected by route with host, and the test platform includes the rigid table top of surrounding stand and middle with hole, institute
Stating surrounding stand includes upper layer bracket and lower floor support, and the rigid table top of middle with hole, institute are wherein equipped in upper layer bracket top
The fixed matching lower floor support in rigid table top lower end of middle with hole is stated, there are gases to lead to for every side middle section of the lower floor support
Road.
As one of preferred embodiment of the invention, the mobile bracket includes rack beam and is arranged in the vertical of two sides
Column, rack beam centre have empty slot, and empty slot inner wall is equipped with the tracks to move linearly for Mechanics Performance Testing device, institute
Upper layer bracket two sides are stated equipped with rectilinear orbit, two heel posts of the mobile bracket can be moved forward and backward in rectilinear orbit.
It further include servo motor as one of preferred embodiment of the invention, the mobile bracket of the servo motor drive control
Two heel posts in rectilinear orbit and Mechanics Performance Testing device synchronizing moving in the tracks of empty slot.
It further include line channel and capture card, the line channel is used for will as one of preferred embodiment of the invention
Servo motor, Mechanics Performance Testing device route be collected together；The capture card synchronous acquisition Mechanics Performance Testing device
And the signal of the respective route of servo motor.
It further include display as one of preferred embodiment of the invention, the display is connected with host.
As one of preferred embodiment of the invention, the pressure head of the bottom presses of the Mechanics Performance Testing device is segment.
As one of preferred embodiment of the invention, diameter d=355mm, the r=800mm of the segment, total contact area s
=1000cm2.
The invention also discloses a kind of mattress hardness graded quantitative test methods, method includes the following steps:
(1) firstly, resting on mattress room temperature (23 ± 2) DEG C before test, 24 in the environment of relative humidity (50 ± 5) %
Hour is to adapt to environment；
(2) then, mattress is placed on the rigid table top of test platform, segment-shaped pressure head is even with the speed of 90mm/min
Speed decline, and the various discrete test point of mattress is acted on, mattress is deformed under pressure, is averaged in triplicate
Value；
(3) finally, being obtained by host and storing experiment loading curve.
The invention also discloses a kind of evaluation methods of mattress hardness graded quantitativeization test, comprising the following steps:
(1) mattress hysteresis loss rate H is calculated according to the experiment loading curve of mattress hardness test are as follows:
Wherein A1It is the area within the scope of 0N~1000N between loading curve and unloading curve, A2It is 0N~1000N range
Area between interior loading curve and x-axis；
(2) load-displacement curves are obtained by formula (1) and two big hardness of human vas receiving pressure value calculating is combined to refer to
Scale value K value and S value, and mattress hardness is classified using the range of K value and S value；
(3) subjective assessment finally is carried out to mattress hardness using human body subjectivity Comfort Evaluation method, and to K value and S value
Two big hardness numbers are modified.It is human body parteriole capillary pressure in 3.3- that wherein human vas, which bears pressure feature,
4.6kPa (25-35mmHg), veinlet vascular pressure are 1.6KPa (12mmHg), and the critical value of veinlet vascular pressure is 4KPa
(30mmHg), if the extraneous pressure for granting body local is more than twice of terminal capillary angiosthenia, i.e. 9.33KPa
(70mmHg), and pressure continues 1-2h, so that it may capillary is blocked to the perfusion of tissue, causes histanoxia, is pressurized more than two
Hour or more will cause irreversible damage.
As one of preferred embodiment of the invention, the K value and S value specific formula for calculation include: with step
The calculation formula of the hardness number S of mattress is as follows:
S=10 (1-e-(Ka+b))2 (2)
Wherein a=7.737 × 10-4, b=9.706 × 10-2,1≤S≤10, when S < 3 is indicated firmly, 3≤S≤6 indicates soft
Hard moderate, 6 < S≤10 indicate soft；
And K is unit mm an important factor for influencing mattress hardness2, formula is as follows:
Indicate that mattress is harder according to LGA standard K < 900 (mm2), 900 (mm2)≤K≤1800 (mm2) indicate that mattress is soft
Hard moderate, K > 1800 (mm2) indicates that mattress is softer；Wherein A450It is total between loading curve and x-axis within the scope of 0N~450N
Area, T are the average (unit N/mm) of loading curve slope, it may be assumed that
Wherein T210、T275、T340It is distributed as tangent slope of the loading curve in 210N, 275N and 340N, unit N/
mm；
K value and the calculating step of S value include:
A1: the gross area within the scope of 0N-450N between loading curve and x-axis is calculated, A450, unit N*mm are denoted as；
A2: tangent slope of the loading curve in 210N, 275N and 340N is calculated, T is calculated separately as210、T275、T340, and count
Three's average value is calculated, T, unit N/mm are denoted as；
A3: the ratio of A450 and T is calculated, K value, unit mm2 are denoted as；
When K < 900 (mm2) indicates that mattress is harder, 900 (mm2)≤K≤1800 (mm2) indicate that mattress is neither too hard, nor too soft, K
> 1800 (mm2) indicates that mattress is softer；
A4: calculating hardness number S value according to K value, shown in calculation method such as formula (2):
S=10 (1-e-(Ka+b))2 (2)
Wherein a=7.737 × 10-4, b=9.706 × 10-2,1≤S≤10, when S < 3 is indicated firmly, 3≤S≤6 indicates soft
Hard moderate, 6 < S≤10 indicate soft.
The present invention compared with prior art the advantages of be: (1) either market scope or scientific research field at present, about bed
The description for padding hardness is most still using qualitatively description.Qualitatively description is unfavorable for comparison and standard mutual between enterprise product
The production and design of change, meanwhile, qualitatively description restricts the innovative design of mattress, customizes design and production.And this hair
Mattress hardness graded quantitative test equipment, method and evaluation method provided by bright overcome above-mentioned limitation, by hard
It spends index value and hardness classification is carried out to mattress, bedding product is divided into soft, neither too hard, nor too soft and hard three hardness ranges and 10 hard
Grade is spent, i.e. K < 900 (mm2) indicates that mattress is harder, and 900 (mm2)≤K≤1800 (mm2) indicate that mattress is neither too hard, nor too soft, K >
1800 (mm2) indicate that mattress is softer.The hardness number value S (1≤S≤10) of quantification is obtained simultaneously, it is detailed to have rated mattress
Hardness level.In addition, enterprise can also further segment 10 hardness leveles according to the demand of product orientation and evaluation；
(2) the lumbar vertebrae curve (i.e. figure) of Chinese and American-European crowd have biggish difference, meanwhile, sleeping position preference and soft or hard
The hobby of degree also has larger difference, so the evaluation criterion of American-European mattress supports performance is not particularly suited for the need of evaluation Chinese
It asks.The present invention is based on the physical characteristics of Chinese and sleeping position, sleep habit preference, gender differences etc., pass through 1000 multiple mattresses
Matched combined mode and Comfort Evaluation establish the evaluation of mattress hardness and Scaling Standards, while can be with the choosing of Chinese Consumer's
Customization design and the production of bed and mattress provide scientific basis.If experiment is studies have shown that male's apophysis is obvious, fat content compared with
Women low about 10%, and therefore, under the premise of guaranteeing support enough, softer hardness is conducive to alleviate pressure the mattress that male uses
Power, it is proposed that mattress hardness range 5-8, women is using the hardness range of mattress in 3-7；
(3) present invention can also test the hardness of point each on mattress, according to test result, draw whole mattress
Hardness distribution.The reasonability of the support of mattress each region is evaluated by hardness distribution and user's figure, weight, especially
It is whether evaluation lumbar support is reasonable, if can guarantee the state of backbone processing natural torsion.Common partitioned mattress is divided into
Head, shoulder back, waist, buttocks and the region of leg five.The modularization that the hardness classification of mattress and hardness are distributed as mattress is set
Meter provides data supporting with production is customized；
(4) mattress hardness test through the invention, can be selected for consumer mattress, purchase mattress provide intuitive science according to
According to；
(5) critical value of human body terminal parteriole vascular pressure is 4KPa, if the extraneous pressure for granting body local is more than
Twice of terminal capillary angiosthenia, i.e. 9.33KPa, and pressure continues 1~2h, so that it may block filling of the capillary to tissue
Stream, causes histanoxia, be pressurized the larger formation that may cause bedsore for a long time.The postures tune such as turn can be passed through for Healthy People
Section is limited handicapped the elderly or behavior to alleviate mattress supports power to the sanguimotor influence of blood of human body
Person, then must be helped turn, adjustment posture etc. by guardian or nursing staff.Mattress hardness is also big, and frequency should be got over by turning over number
It is numerous.Therefore, the present invention can provide scientific theory foundation for the control of handicapped the elderly and the limited person of behavior.One
As mattress hardness S value in 3-4, be spaced 30min need to adjust posture it is primary；Hardness S value is spaced 50min and needs to adjust appearance in 4-5
Gesture is primary；Hardness S value needs to adjust posture primary in 5-6, interval 60min；
(6) share is increasing in the market for Intelligent furniture, and the intelligentized design of mattress is also in early stage of development rank
An important factor for section, the mattress hardness evaluation method of absent standardized is limitation mattress intelligent development.Bed provided by the invention
Hardness graded quantitative test equipment, method and evaluation method are padded, this problem is just able to solve.It is provided by the present invention
Mattress hardness graded quantitative test equipment, method and evaluation method can be the intelligence adjusting of intelligent bed and intellectual monitoring
Scientific theory foundation and data supporting are provided；
(7) mattress hardness graded quantitative test equipment, method and evaluation method of the present invention can be enterprise's mattress
Standardized production customizes design, and produces and sells (mid-sales, after sale) service and provide scientific theory foundation and data supporting.
Enterprise can establish the relationship between the factors such as human somatotype, weight, gender and mattress hardness, to serve enterprise's mattress
Standardized production, customize design, and produce and sell.
Detailed description of the invention
Fig. 1 is mattress hardness graded quantitative test equipment structural schematic diagram in the present embodiment；
Fig. 2 is schematic diagram of the mattress hardness graded quantitative test equipment in test in the present embodiment；
Fig. 3 is the bottom presses structural schematic diagram of Mechanics Performance Testing device in the present embodiment；
Fig. 4 is various discrete test point schematic diagram on mattress in the present embodiment；
Fig. 5 is hardness placement test load-displacement curves obtained in the present embodiment.
Specific embodiment
It elaborates below to the embodiment of the present invention, the present embodiment carries out under the premise of the technical scheme of the present invention
Implement, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to following implementation
Example.
Embodiment 1
As shown in Figs. 1-5, a kind of mattress hardness graded quantitative test equipment of the present embodiment, including test platform (1),
Mobile bracket (2), Mechanics Performance Testing device (3), host (4), the mobile bracket (2) are installed on test platform (1) simultaneously
It can be moved forward and backward, Mechanics Performance Testing device (3) downwards is provided on the mobile bracket (2) for measuring mattress
(8) the load-displacement data of various discrete test point (9) on, the Mechanics Performance Testing device (3) pass through route and host
(4) it is connected, the test platform (1) includes the rigid table top (12) of surrounding stand (11) and middle with hole, and bore dia is
6mm, pitch of holes 20mm, so that mattress is discharged in the gas generated in test process in time, the surrounding stand (11) includes
Upper layer bracket and lower floor support are wherein equipped with the rigid table top (12) of middle with hole, the middle with hole in upper layer bracket top
The fixed matching lower floor support in rigid table top (12) lower end, there are gas passages for every side middle section of the lower floor support
(14)；Present embodiments provide a kind of quantification test mattress hardness, mattress each point independence supportive, between mattress each point mutually
The test equipment equipment and the course of work of annoyance level.
Embodiment 2
A kind of mattress hardness graded quantitative test equipment of the present embodiment, it is substantially the same manner as Example 1, main difference it
Being in, the mobile bracket (2) includes rack beam (21) and the column (22) that two sides are arranged in, in rack beam (21)
Between there are empty slot (211), empty slot (211) inner wall is equipped with the tracks that move linearly for Mechanics Performance Testing device (3), institute
Upper layer bracket two sides are stated equipped with rectilinear orbit (13), two heel posts (22) of the mobile bracket (2) are in rectilinear orbit (13)
It can be moved forward and backward, further include servo motor (7), two heel posts (22) of servo motor (7) drive control mobile bracket (2)
In rectilinear orbit (13) and Mechanics Performance Testing device (3) synchronizing moving in the tracks of empty slot (211), further include
Line channel (212) and capture card (5), the line channel (212) are used to fill servo motor (7), Mechanics Performance Testing
The route for setting (3) is collected together；Capture card (6) the synchronous acquisition Mechanics Performance Testing device (3) and servo motor (7)
Respective route signal, further include display (6), the display (6) is connected with host (4), the Mechanics Performance Testing
The pressure head of the bottom presses (31) of device (3) is segment, diameter d=355mm, the r=800mm of the segment, total contact area s
=1000cm2；The present embodiment can test the hardness of point each on mattress, for the subsequent hardness point for drawing whole mattress
Butut provides data supporting.
Embodiment 3
The present embodiment also discloses a kind of mattress hardness graded quantitative test method, method includes the following steps:
(1) firstly, resting on mattress (8) room temperature (23 ± 2) DEG C before test, the environment of relative humidity (50 ± 5) %
In 24 hours to adapt to environment；
(2) then, mattress (8) is placed on the rigid table top (12) of test platform (1), segment-shaped pressure head (31) with
The speed uniform descent of 90mm/min, and the various discrete test point (9) of mattress (8) is acted on, mattress (8) is under pressure
It is deformed, is averaged in triplicate；
(3) finally, being obtained by host (4) and storing experiment loading curve.
The hardness of the mattress of the present embodiment, which is classified, and hardness is distributed as the modularized design of mattress and customizes production provides
Data supporting.
Embodiment 4
The present embodiment also discloses a kind of evaluation method of mattress hardness graded quantitativeization test, comprising the following steps:
(1) mattress hysteresis loss rate H is calculated according to the experiment loading curve of mattress hardness test are as follows:
Wherein A1It is the area within the scope of 0N~1000N between loading curve and unloading curve, A2It is 0N~1000N range
Area between interior loading curve and x-axis；
(2) load-displacement curves are obtained by formula (1) and two big hardness of human vas receiving pressure value calculating is combined to refer to
Scale value K value and S value, and mattress hardness is classified using the range of K value and S value；
(3) subjective assessment finally is carried out to mattress hardness using human body subjectivity Comfort Evaluation method, and to K value and S value
Two big hardness numbers are modified.It is human body parteriole capillary pressure in 3.3- that wherein human vas, which bears pressure feature,
4.6kPa (25-35mmHg), veinlet vascular pressure are 1.6KPa (12mmHg), and the critical value of veinlet vascular pressure is 4KPa
(30mmHg), if the extraneous pressure for granting body local is more than twice of terminal capillary angiosthenia, i.e. 9.33KPa
(70mmHg), and pressure continues 1-2h, so that it may capillary is blocked to the perfusion of tissue, causes histanoxia, is pressurized more than two
Hour or more will cause irreversible damage.
Further, the K value and S value specific formula for calculation include: with step
The calculation formula of the hardness number S of mattress is as follows:
S=10 (1-e-(Ka+b))2 (2)
Wherein a=7.737 × 10-4, b=9.706 × 10-2,1≤S≤10, when S < 3 is indicated firmly, 3≤S≤6 indicates soft
Hard moderate, 6 < S≤10 indicate soft；
And K is unit mm an important factor for influencing mattress hardness2, formula is as follows:
Indicate that mattress is harder according to LGA standard K < 900 (mm2), 900 (mm2)≤K≤1800 (mm2) indicate that mattress is soft
Hard moderate, K > 1800 (mm2) indicates that mattress is softer；Wherein A450It is total between loading curve and x-axis within the scope of 0N~450N
Area, T are the average (unit N/mm) of loading curve slope, it may be assumed that
Wherein T210、T275、T340It is distributed as tangent slope of the loading curve in 210N, 275N and 340N, unit N/
mm；
K value and the calculating step of S value include:
A1: the gross area within the scope of 0N-450N between loading curve and x-axis is calculated, A450, unit N*mm are denoted as；
A2: tangent slope of the loading curve in 210N, 275N and 340N is calculated, T is calculated separately as210、T275、T340, and count
Three's average value is calculated, T, unit N/mm are denoted as；
A3: the ratio of A450 and T is calculated, K value, unit mm2 are denoted as；
When K < 900 (mm2) indicates that mattress is harder, 900 (mm2)≤K≤1800 (mm2) indicate that mattress is neither too hard, nor too soft, K
> 1800 (mm2) indicates that mattress is softer；
A4: calculating hardness number S value according to K value, shown in calculation method such as formula (2):
S=10 (1-e-(Ka+b))2 (2)
Wherein a=7.737 × 10-4, b=9.706 × 10-2,1≤S≤10, when S < 3 is indicated firmly, 3≤S≤6 indicates soft
Hard moderate, 6 < S≤10 indicate soft.
The present embodiment can adjust for the intelligence of intelligent bed and intellectual monitoring provides scientific theory foundation and data supporting；And
And for the standardized production of enterprise's mattress, customize design, and produce and sell (mid-sales, after sale) service and scientific theory be provided
Foundation and data supporting.Enterprise can establish the relationship between the factors such as human somatotype, weight, gender and mattress hardness, from
And it serves the standardized production of enterprise's mattress, customize design, and produce and sell.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of mattress hardness graded quantitative test equipment, which is characterized in that including test platform (1), mobile bracket (2),
Mechanics Performance Testing device (3), host (4), the mobile bracket (2) are installed on test platform (1) and can be moved forward and backward,
Mechanics Performance Testing device (3) downwards is provided on the mobile bracket (2) for measuring various discrete on mattress (8)
The load-displacement data of test point (9), the Mechanics Performance Testing device (3) are connected by route with host (4), the survey
Examination platform (1) includes the rigid table top (12) of surrounding stand (11) and middle with hole, and the surrounding stand (11) includes upper layer
Bracket and lower floor support, wherein at the top of upper layer bracket in be equipped with the rigid table top (12) of middle with hole, the middle with hole it is rigid
Property table top (12) lower end fixed matching lower floor support, there are gas passage (14) for every side middle section of the lower floor support.
2. mattress hardness graded quantitative test equipment according to claim 1, which is characterized in that the mobile bracket
(2) include rack beam (21) and the column (22) that two sides are set, there are empty slot (211) among rack beam (21), it is empty
Slot (211) inner wall is equipped with the tracks to move linearly for Mechanics Performance Testing device (3), and the upper layer bracket two sides are equipped with
Two heel posts (22) of rectilinear orbit (13), the mobile bracket (2) can be moved forward and backward in rectilinear orbit (13).
3. mattress hardness graded quantitative test equipment according to claim 2, which is characterized in that further include servo motor
(7), two heel posts (22) of servo motor (7) drive control mobile bracket (2) are in rectilinear orbit (13) and mechanics
Performance testing device (3) synchronizing moving in the tracks of empty slot (211).
4. mattress hardness graded quantitative test equipment according to claim 3, which is characterized in that further include line channel
(212) and capture card (5), the line channel (212) are used for the line of servo motor (7), Mechanics Performance Testing device (3)
Road is collected together；The respective line of capture card (6) the synchronous acquisition Mechanics Performance Testing device (3) and servo motor (7)
The signal on road.
5. mattress hardness graded quantitative test equipment according to claim 4, which is characterized in that further include display
(6), the display (6) is connected with host (4).
6. mattress hardness graded quantitative test equipment according to claim 1, which is characterized in that the mechanical property is surveyed
The pressure head that the bottom presses (31) of (3) are set in trial assembly is segment.
7. mattress hardness graded quantitative test equipment according to claim 6, which is characterized in that the diameter of the segment
D=355mm, r=800mm, total contact area s=1000cm2。
8. a kind of mattress hardness graded quantitative test method, which is characterized in that method includes the following steps:
(1) firstly, resting on mattress (8) room temperature (23 ± 2) DEG C before test, 24 in the environment of relative humidity (50 ± 5) %
Hour is to adapt to environment；
(2) then, mattress (8) is integrally placed on the rigid table top (12) of test platform (1), segment-shaped pressure head (31) with
The speed uniform descent of 90mm/min, and the various discrete test point (9) of mattress (8) is acted on, mattress (8) is under pressure
It is deformed, is averaged in triplicate；
(3) finally, being obtained by host (4) and storing experiment loading curve.
9. a kind of evaluation method of mattress hardness graded quantitativeization test according to claim 8, which is characterized in that including
Following steps:
(1) mattress hysteresis loss rate H is calculated according to the experiment loading curve of mattress hardness test are as follows:
Wherein A1It is the area within the scope of 0N~1000N between loading curve and unloading curve, A2It is to add within the scope of 0N~1000N
Carry the area between curve and x-axis；
(2) load-displacement curves are obtained by formula (1) and human vas is combined to bear pressure value two big hardness number values of calculating
K value and S value, and mattress hardness is classified using the range of K value and S value；
(3) subjective assessment finally is carried out to mattress hardness using human body subjectivity Comfort Evaluation method, and big to K value and S value two
Hardness number is modified.
10. the evaluation method of mattress hardness graded quantitativeization test according to claim 9, which is characterized in that the K value
Include: with step with S value specific formula for calculation
The calculation formula of the hardness number S of mattress is as follows:
S=10 (1-e-(Ka+b))2 (2)
Wherein a=7.737 × 10-4, b=9.706 × 10-2,1≤S≤10, when S < 3 is indicated firmly, 3≤S≤6 indicates soft or hard suitable
In, 6 < S≤10 indicate soft；
And K is unit mm an important factor for influencing mattress hardness2, formula is as follows:
Indicate that mattress is harder according to LGA standard K < 900 (mm2), 900 (mm2)≤K≤1800 (mm2) indicate that mattress is soft or hard suitable
In, K > 1800 (mm2) indicates that mattress is softer；Wherein A450For the gross area within the scope of 0N~450N between loading curve and x-axis,
T is the average (unit N/mm) of loading curve slope, it may be assumed that
Wherein T210、T275、T340It is distributed as tangent slope of the loading curve in 210N, 275N and 340N, unit N/mm；
K value and the calculating step of S value include:
A1: the gross area within the scope of 0N-450N between loading curve and x-axis is calculated, A450, unit N*mm are denoted as；
A2: tangent slope of the loading curve in 210N, 275N and 340N is calculated, T is calculated separately as210、T275、T340, and calculate three
Person's average value is denoted as T, unit N/mm；
A3: the ratio of A450 and T is calculated, K value, unit mm2 are denoted as；
When K < 900 (mm2) indicates that mattress is harder, 900 (mm2)≤K≤1800 (mm2) indicate that mattress is neither too hard, nor too soft, K >
1800 (mm2) indicate that mattress is softer；
A4: calculating hardness number S value according to K value, shown in calculation method such as formula (2):
S=10 (1-e-(Ka+b))2 (2)
Wherein a=7.737 × 10-4, b=9.706 × 10-2,1≤S≤10, when S < 3 is indicated firmly, 3≤S≤6 indicates soft or hard suitable
In, 6 < S≤10 indicate soft.
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