CN109171315A - Automatically adjust mattress and intelligent bed - Google Patents
Automatically adjust mattress and intelligent bed Download PDFInfo
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- CN109171315A CN109171315A CN201811229836.3A CN201811229836A CN109171315A CN 109171315 A CN109171315 A CN 109171315A CN 201811229836 A CN201811229836 A CN 201811229836A CN 109171315 A CN109171315 A CN 109171315A
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
- A47C27/08—Fluid mattresses or cushions
- A47C27/10—Fluid mattresses or cushions with two or more independently-fillable chambers
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
- A47C27/08—Fluid mattresses or cushions
- A47C27/081—Fluid mattresses or cushions of pneumatic type
- A47C27/083—Fluid mattresses or cushions of pneumatic type with pressure control, e.g. with pressure sensors
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
- A47C31/12—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons
- A47C31/123—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons for beds or mattresses
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2642—Domotique, domestic, home control, automation, smart house
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Invalid Beds And Related Equipment (AREA)
- Mattresses And Other Support Structures For Chairs And Beds (AREA)
Abstract
The present invention relates to intelligence to adjust bed technique field, specifically provides a kind of sensor and the automatic adjustment mattress including the sensor.The sensor includes sensing arrangement, the sensing arrangement includes sensing layer, the sensing layer successively includes: flexible upper layer signal conducting shell, pressure sensing layer and flexible under-layer signal conductive layer from top to bottom, the pressure sensing layer includes that perhaps side and/or following side are provided with convex concave architecture or hard material above isolated sensor and the sensing arrangement for a point array sensor, strip sensor.The technical solution of the application uses the combination of air bag and flexible sensing structure, and the two respectively corresponds the function of adjusting and sensing.This set can largely can reduce weight and cost while meeting functional requirement.
Description
Technical field
The present invention relates to intelligence to adjust bed technique field, and in particular, to a kind of sensor and including the sensor from
Dynamic regulating mattress and intelligent bed.
Background technique
People is under different sleeping positions, and according to human engineering mechanics, the support that body various pieces need is different, and
And the body pressure in each region be it is different, from the perspective of keeping fit and balancing, when lying low and lying on one's side, need to keep ridge
The normal physiological bending of vertebra.Conventional mattress on the market is unable to satisfy this demand at present, gives one health of user without reaching
Sleep.
Consider from the physiological bending of vertebra, the reasonable layout of body pressure and muscle and the smooth degree of blood supply, needs to human body
The supports of some regions carry out adjusting appropriate.In this case, mattress simultaneously need to meet it is at low cost, be conducive to mass production and
The requirement of popularization, while wanting weight light, it is conducive to transport, but also to retain the comfort level that mattress originally has.Current existing side
Case is to realize the high low adjustment of multizone to mattress by the way of motor and mechanical structure, while mating dot matrix sensing module,
It theoretically can basically meet the demand, but facing challenges are weight and cost, and in order to guarantee comfort level, most
Entire mattress can be partially thick eventually.
From the perspective of technology, needs to carry out sensing detection to the pressure of the corporal parts of user and adjust in real time
Section.And there are no the intelligent regulating mattress that can realize the function well in the product of existing market.
Therefore, on Vehicles Collected from Market, very big demand is had according to the mattress that sleeping position automatically adjusts for multizone.
Summary of the invention
The embodiment of the present invention is designed to provide a kind of sensor for mattress and a kind of intelligence that can be automatically adjusted
Mattress, it is intended to solve the problems, such as that existing mattress can not be realized according to sleeping position and pressure simultaneously and adjust in real time, combine cost, body
It tests sense, weight and industrialization and realizes difficulty etc..
The embodiments of the present invention are implemented as follows, a kind of sensor for mattress, including sensing arrangement, the sensing arrangement
Including sensing layer, which successively includes: flexible upper layer signal conducting shell, pressure sensing layer and flexible under-layer letter from top to bottom
Number conducting shell, the pressure sensing layer include a point array sensor, strip sensor or discrete sensing, and the sensing arrangement
Side and/or following side are provided with convex concave architecture or hard material above.
The another object of the embodiment of the present invention is to provide a kind of gasbag-type sensing device, including pressure sensor is gentle
Capsule, the sensor are connect with spring, and the sensor and spring are respectively positioned in the air bag, and the pressure sensor is located at gas
At the top of capsule or bottom.
The another object of the embodiment of the present invention is to provide a kind of mattress, including sensor provided by the invention, further includes
Air bag, the sensor top are provided with comfort liner, and lower section is provided with buffer layer.
Another of the embodiment of the present invention is designed to provide a kind of air bag regulating mattress, including multiple individual air bags, in
Turn air bag, air valve and discrete tracheae, wherein the multiple individual air bag is connect by discrete tracheae with transfer air bag, discrete tracheae
On be provided with air valve for controlling gas flowing, the bore of the discrete tracheae and multiple individual air bag junctions is greater than described point
The bore of vertical tracheae and transfer air bag junction.
The embodiment of the present invention also provides a kind of air bag regulating mattress, including multiple individual air bags, air valve and tracheae, adjacent
Two individual air bags pass through tracheae connection at both ends, and the flowing of an Air Valve Control air-flow is designed on each tracheae.
The embodiment of the present invention also provides a kind of intelligence adjusting bed, including air bag regulating mattress of the invention.
The technical solution of the application uses the combination of air bag and flexible sensing structure, and the two respectively corresponds adjusting and sensing
Function.This set can largely can reduce weight and cost, and due to gas while meeting functional requirement
Pump and flexible sensing are all non-rigid senses, are easier to meet the requirement of comfort level.
Detailed description of the invention
Fig. 1 is mattress construction provided by one embodiment of the present invention；
Fig. 2 be another embodiment of the present invention provides mattress part-structure；
Fig. 3 is the arrangement schematic diagram of the sensing layer in sensor provided by one embodiment of the present invention；
Fig. 4 is sensor structure schematic diagram provided by one embodiment of the present invention；
Fig. 5 is the sensor structure schematic diagram that another embodiment of the present invention provides；
Fig. 6 is the structural schematic diagram of sensing arrangement provided by one embodiment of the present invention；
Fig. 7 is the structural schematic diagram for the sensing arrangement that another embodiment of the present invention provides；
Fig. 8 is the structural schematic diagram for the sensing arrangement that another embodiment of the present invention provides；
Fig. 9 is the partitioned organization schematic diagram for the sensing arrangement that another embodiment of the present invention provides；
Figure 10 is the structural schematic diagram for the sensing arrangement that another embodiment of the present invention provides；
Figure 11 is the sectional view of sensing arrangement shown in Fig. 10；
Figure 12 is the structural schematic diagram for the sensing arrangement that another embodiment of the present invention provides；
Figure 13 is the structural schematic diagram for the sensing arrangement that another embodiment of the present invention provides；
Figure 14 is the structural schematic diagram for the sensing arrangement that another embodiment of the present invention provides；
Figure 15 be another embodiment of the present invention provides the structural schematic diagram of sensing arrangement that is cut of buffer layer；
Figure 16 is the structural schematic diagram of gasbag-type sensing arrangement provided by one embodiment of the present invention；
Figure 17 is the structural schematic diagram of gasbag-type sensing arrangement provided by one embodiment of the present invention；
Figure 18 is the structural schematic diagram of the air pressure provided by one embodiment of the present invention containing baroceptor；
Figure 19 A is the structural schematic diagram of mattress provided by one embodiment of the present invention；
Figure 19 B is the structural schematic diagram of discrete tracheae in Figure 19 A；
Figure 19 C is the air pump structure schematic diagram with sound arrester in Figure 19 A；
Figure 20 is the structural schematic diagram for the mattress that another embodiment of the present invention provides；
Figure 21 is the structural schematic diagram of air-sac mattress provided by one embodiment of the present invention；
Figure 22 is the electrical block diagram of one embodiment of the invention；
Figure 23 is system control process figure provided in an embodiment of the present invention；
Figure 24 is the low-pass filter structure schematic diagram that one embodiment of the invention uses；
Figure 25 is the low-pass filter structure schematic diagram that one embodiment of the invention uses；
Figure 26 is the circuit structure diagram of multistage instrument amplification filtering provided by one embodiment of the present invention；
Figure 27 is sensing identification process method provided by one embodiment of the present invention；
Figure 28 is trunk recognition methods process provided by one embodiment of the present invention；
Figure 29 is the specific steps of determining sleeping position provided in an embodiment of the present invention；
Figure 30 is the specific steps of determining torso area symmetry (SYM) provided in an embodiment of the present invention；
Figure 31 is the adjusting algorithm schematic diagram that intelligence provided by one embodiment of the present invention adjusts bed.
Specific embodiment
In order to which technical problems, technical solutions and advantageous effects to be solved by the present invention are more clearly understood, below in conjunction with
Accompanying drawings and embodiments, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
The embodiment of the invention provides a kind of sensor for intelligent bed, which can be according to material type
Piezoresistance sensor is also possible to pressure-volume sensor, is also possible to strain pressure transducer.
Specifically, which includes sensing arrangement, which includes sensing layer, and the sensing layer is from top to bottom successively
It include: flexible upper layer signal conducting shell, pressure sensing layer and flexible under-layer signal conductive layer, the pressure sensing layer includes dot matrix
Sensor, strip sensor or isolated sensor, and above the sensing arrangement side and/or following side be provided with it is convex
Concave architecture or hard material.
In the embodiment of the present invention, mattress can be divided into according to the relationship of sensing and adjustment module: sensing and the independent knot of adjusting
Structure (referring to Fig. 1) and convolution sensing airbag structure (as shown in Figure 2).Fig. 1 shows that sensing arrangement and adjustment structure are mutually only
The embodiment of vertical mattress, as shown in Figure 1, the mattress from top to bottom successively includes: comfort liner, sensing layer, buffer layer and air bag
Layer, wherein sensing layer and air bag layer (adjustment structure) centre are provided with buffer layer, and the two is spatially independent, mutual not shadow
It rings.Air bag is by inflation/deflation come the height of regulating mattress corresponding part.Sensing layer specifically include that flexible upper layer signal conducting shell,
Flexible under-layer signal conductive layer, and intermediate pressure sensing layer.
Fig. 2 shows the embodiment that sensing layer and regulating course integrate, in the embodiment, below the comfort liner of mattress
It is provided with sensing regulating course, wherein air bag is blended in sensing-regulating course, and sensing layer and regulating course are integrated by such setting
One, the embodiment relative to Fig. 1 significantly reduces the thickness of mattress, and reduces the use of buffer layer, on the other hand
It reduces costs, alleviates weight.
Sensing layer used in the embodiment of the present invention can be set to an array sensor, strip sensor or discrete and pass
Sense.For an array sensor, also referred to as face formula point array sensor, sensor is one whole stratiform flexible membrane, and the inside is matrix row
The distributed sensing unit of column, as shown in figure 3, wherein sensing unit is according to array which show the arrangement mode of sensing unit
Arrangement, every row have a line horizontal scanning line, often show signal output line.The dot matrix of such available sensor film of arrangement mode
Formula pressure value.
In another embodiment, sensor is the sensor of multiple strip-like sensor unit compositions, the biography in the embodiment
Sensor has multiple sensing units being arranged side by side, as shown in figure 4, wherein each band (sensing unit) senses comprising multiple monomers
The difference of device, the embodiment and Fig. 3 embodiment shown is that the set-up mode of strip-like sensor device can arbitrarily choose target
Region is placed, that is, be arranged it is more flexible, by the density degree of arrangement, may be implemented to some regions pressure carry out
Emphasis monitoring.
In another embodiment, sensor is isolated sensor, as shown in figure 5, each point is an independent sensing
Unit, such sensing layer can be achieved with the adjusting of size and freely setting for position, and the embodiment relative to Fig. 3 and Fig. 4 is arranged
It is more flexible.
Fig. 6 shows the sensing layer distribution map in one embodiment of the invention, sensor include flexible top layer signals layer and
Flexible bottom layer signals layer, and the core sensing layer among the two.The flexible top layer signals layer is also referred to as flexible top layer and walks
Line layer, the flexible bottom layer signals layer are also referred to as flexible bottom layer routing layer.It is comfort liner above the sensing module, lower section is buffering
Layer, for sensing layer and regulating course to be isolated.This stand alone type sensing arrangement has problems in that the pressure that mattress surface is born
It can laterally share to surrounding by dielectric layer (comfort liner), cause the not independence of sensing data, thereby result in sensing layer receiving
Pressure and actually do not sleep the body pressure of person there are certain deviation so that testing result is inaccurate.In order to reduce this deviation,
The present invention proposes following several solutions: 1. thickness compensation methods, 2. hardness penalty methods, 3. cutting discrete methods.
The first scheme, thickness compensation method, specific embodiment be the upper surface of sensing unit or below pad one layer of convex-concave
Shape structure, or the comfort liner for being located at sensing layer structure or following buffer layer are made into concave/convex-shaped structure or both
It is made into concavo-convex.
Fig. 7 shows that bottom buffer layer in one embodiment of the invention is made into the schematic diagram of concavo-convex mattress construction, Fig. 8
It shows that buffer layer and comfort liner are all provided with and is set to concavo-convex embodiment.The purpose for being made into concave/convex-shaped structure is to work as signal function
In comfort liner, the deformation of the thickness direction all material of the stress area is necessarily caused.Due to the sensitive zones of sensor
Material texture will be thicker than the material in other regions (non-sensitive zones), so pressure preferential interaction to sensitive zones, therefore, is waiting
It imitates in the case where condition of equivalent thickness, the coefficient of elasticity of sensitive zones should be greater than peripheral region, and (non-sensitive zones do not include and pass
Feel the region of unit) coefficient of elasticity, as shown in figure 9, wherein K1 indicates the coefficient of elasticity of sensitive zones, K2 indicates non-sensing unit
The coefficient of elasticity in domain, as described above, K1 > K2.In this case, pressure is just preferentially assigned to sensitive zones, and this set will drop
The horizontal transfer of low-pressure, while the independence of sensor is improved, improve detection sensitivity.
Second scheme, hardness penalty method, particular by the upper surface of sensing unit or below pad one layer of hard mould
Hard material is filled in the upper surface of block or sensing unit comfort liner or following buffer layer grooving.As shown in Figure 10, it is only shown in figure
Sensing layer structure pads the material of one piece of hard in sensitive zones, the coefficient of elasticity of this hard material is higher than the bullet of comfort liner
Property coefficient equally can achieve sensing so the combined elastic coefficient of sensitive zones is higher than other regions (non-sensitive zones)
The more independent purpose of device.Figure 11 is the sectional view of sensing layer structure shown in Fig. 10.Mattress is comfortable in the embodiment of the present invention
Layer is the mattress the top structure sheaf nearest from user.Comfort liner may include following material: sponge, latex, memory sponge, mountain
Palm fibre, coconut palm palm fibre, jute, gelator latex, gelator memory sponge, gelator sponge and bamboo charcoal fiber cotton.
Figure 12-Figure 14 shows the structure chart of the mattress embodiment with hard cushion block (filler).The bed that Figure 12 is shown
Pad is that the side in comfort liner sensing contact region is cut out a part of thickness, is subsequently filled hard filler.In another embodiment,
The hard filler is filled into the buffer layer of bottom, as shown in figure 13.In another embodiment, comfort liner and buffer layer are filled out
Filled with hard cushion block.In another specific embodiment, hard cushion block is placed on above bottom buffer layer, and below sensing layer,
As shown in figure 14.
The third scheme, cut discrete method, in particular to, on the column direction of sensing unit, by upper layer comfort liner
Certain thickness cutting (cutting trace can also be not through comfort liner through comfort liner) is carried out, so that sensing unit
With better independence, avoid interfering with each other, specific structure is as shown in figure 15.The cutting line of comfort liner is put down each other in Figure 15
Row, and it is parallel with the orientation of monomer sensor.
In preferred embodiment, the discrete scheme of the cutting is used in combination with strip-like sensor unit shown in Fig. 4.And comfort liner
Cutting trace it is corresponding with the edge of strip-like sensor unit, in this way setting partition pressure cross conduction effect it is more significant.
Mattress provided in an embodiment of the present invention further includes regulating device, after sensor detects the pressure condition that mattress is born
Regulating device is passed information to, which carries out adaptability adjusting to mattress surface height, so that user obtains most
Comfortable sleeping posture.Regulating device used in the embodiment of the present invention can be air bag regulating device, be also possible to others
Regulating device.
Another embodiment of the present invention provides a kind of combination gasbag-type sensing arrangement, in conjunction with being sensed in gasbag-type sensing arrangement
Device and to adjust air bag be an overall structure, i.e. adjusting-sensing arrangement, as shown in Figure 2.In this way by sensing identification after, into
Row is adjusted, while carrying out sensory feedback constantly again to reach more accurate adjusting, is had effectively achieved sensing and is adjusted one
Body.It mainly include air bag, sensor and airometer three parts in conjunction with gasbag-type sensing arrangement.When pressure acts on air bag
When, the elasticity of air bag itself can balance out a part of pressure, and other pressure effects are on a sensor.So being obtained on sensor
Power be not fully equal to the pressure of practical function, can somewhat deviation, and the elasticity of air bag itself is shared or is balanced out
Pressure is relevant to the air pressure in air bag, so setting airometer can be compensated and be corrected to the pressure of sensor.
Specifically, convolution sensing airbag structure can be top or bottom that sensor is located in air bag, such as Figure 16 institute
Show, spring one end connects at the top of air bag, and the other end is connected with pressure sensor, which is located at air bag bottom.Work as pressure
When power acts on air bag, it is transmitted on pressure sensor by spring.
Can also outside air bag top or bottom be provided with pressure sensor, which can collect air bag
The pressure size in region, as shown in figure 17.The structure shown in Figure 17 rotates 180 ° (i.e. pressure sensor is located above air bag)
Similar sensing can also be obtained and adjust integrated effect.
Another embodiment is as shown in figure 18, and baroceptor is located on airbag wall, alternatively, baroceptor can also be located at
On air bag inner wall, when air bag inflation/deflation, necessarily cause the air pressure change in air bag.When air bag bears pressure, air pressure sensing
The case where device can also experience the corresponding variation of pressure, thus detect pressure-bearing.
The embodiment of the present invention also provides a kind of air bag class mattress adjustment structure, is explained by following specific embodiments
It is bright:
Embodiment 1:
Mattress provided in this embodiment is by the way of air bag adjusting, and as shown in Figure 19 A, wherein the bottom of mattress is by a row
It arranges individual air bag to arrange, each individual air bag is connected with a tracheae, convenient for smaller area adjusts pressure and lifting.
Air bag and tracheae are all connected on transfer air bag, and by Air Valve Control, transfer air bag passes through whole tracheae and connects with air pump for centre.
Transfer air bag is for storing air pressure, the convenient regulation to individual air bag.By air valve and air pump control to each air bag charge and discharge
Thus the operation of gas adjusts the hardness of each air bag.
On the other hand, the tracheae that discrete tracheae uses bore to change in the embodiment of the present invention, as shown in Figure 19 B, individual gas
The bore of the tracheae of Nang Chu is larger, and the tracheae bore at transfer air bag is smaller, can be in the feelings of identical pressure in air pump
Under condition, the air velocity of air bag is reduced in inflation/deflation, reduces the sound of air-flow in air bag.
Preferably, air pump is placed in sound proof box and buffer layer, for slowing down the vibration of air pump, reduces the sound of air pump,
As shown in fig. 19 c.
Embodiment 2:
The present embodiment increases a motor module relative to embodiment 1, and as shown in figure 20, which passes through silk
Bar and nut are attached with transfer air bag.
In concrete operations, air pump is first passed through to the gas of the pre- sufficient quantity of transfer air bag, is then shut off air pump.When in use,
Corresponding tracheae is opened by air valve, thus motor lead screw rotation pushes nut to squeeze or far from transfer air bag, to increase
Gas is pressed into the air bag inside mattress for the air pressure of transfer air bag or the air pressure of reduction transfer air bag makes the gas inside mattress
The gas of capsule enters transfer air bag, thus adjusts the hardness of air bag.
Embodiment 3
Mattress in the present embodiment is as shown in figure 21, and the bottom of mattress is arranged by several rows of air bag, adjacent air bag
At both ends by tracheae connection, there is an Air Valve Control in each tracheae, thus two adjacent individual air bags directly may be used
To adjust the flowing each other of air-flow by air valve.
When people lies on mattress, the gas in the biggish place of the pressure such as buttocks, the biggish air bag of pressure can pass through opening
The tracheae of air valve flow in the lesser air bag of pressure.
In this mattress, air bag is divided by three parts by air valve, head portion, spinal segment, leg part, three
The mutual circulation of air-flow may be implemented in the individual air bag of partial interior.Further, spinal segment include neck, shoulder, back,
Waist, buttocks.When people lies in mattress, the pressure of buttocks is larger, and the pressure of waist is smaller, the gas in air bag where buttocks
It flows in the air bag where waist, realizes the support of waist.
Furthermore, it is possible to pass through the switch of algorithm control valve, it is connected to the air bag of identical inflation/deflation, realizes specified air bag
Carry out quick inflation/deflation.The present embodiment is low relative to Examples 1 and 2 manufacturing cost, light-weight, is readily transported and installs.
The improvement of the embodiment of the present invention is: reduce air-flow sound setting: the bore of the tracheae at discrete air bag compared with
Greatly, the bore of the tracheae of transfer air bag is smaller, can reduce the sound of tracheal flow；In example 2, it is squeezed by motor
Pressure transfer air bag gives mattress air bag inflation/deflation, reduces air pump bring sound, while can control by changing the revolving speed of motor
The speed of inflation/deflation reduces the sound of air-flow in tracheae；For the mattress in embodiment 3: when different people lies in mattress, head
Partially, spinal segment, legs and feet region position difference when, by change air valve switch position, in real time adapt to 3 parts position
The variation set.The embodiment can significantly reduce production cost.
Circuit structure
Mattress in the embodiment of the present invention further includes circuit modular structure, which mainly includes sensor array
Scanning signal generating unit, transducing signal amplify filter unit, AD unit, main control unit (MCU) and air bag control unit, such as scheme
Shown in 22.
Circuit module used in the embodiment of the present invention mainly includes following module:
1. filter and amplification unit: mainly carrying out low-pass filtering and amplification to the small signal of sensor array output；
2. signal scanning unit: forming the line scan signals of sensor；
3.AD unit: the signal after filter and amplification is subjected to AD processing and is converted to digital signal；
4.MCU unit: mainly pre-processing the transducing signal after AD, then carry out sensing recognizer, and
Adjust algorithm；
5. air bag control unit: the mainly drive module of the inflator pump of control air bag.
The system control process of the embodiment of the present invention is as shown in figure 23.
Systemic key technology point of the invention
1, signal noise is handled
For people in quiet lie, pressure is static direct current signal, and the change of pressure is regarded as changing for circuit direct operating point
Become.But due to environmental factor, such as Hz noise or environment micro-vibration and circuit devcie and power supply the reason of can be
Transducing signal output end introduces noise, and in severe cases, the noise of signal can even flood the small effective letter of some amplitudes
Number.And under the premise of the sensitivity of sensor is certain, the output noise for reducing signal is a necessary thing.For this purpose,
It proposes to reduce signal noise jointly by circuit noise reduction and algorithm noise reduction in the application, improves signal-to-noise ratio.
(1) circuit noise reduction: low-pass filter is used
Since pressure is a kind of stationary singnal, it is believed that frequency is extremely low, and environment and circuit noise are a kind of white noises,
That is in each frequency range, therefore when circuit design, low-pass filtering will be added at transducing signal end largely to reduce noise profile
The noise of environment.
As shown in figure 24, a kind of easy low-pass filter is provided, when sensor generates impedance variations due to deformation,
It will cause the variation for exporting DC level, and the low pass filtered of single order may be implemented in the low-pass filter structure of resistance R and capacitor C composition
Wave, cutoff frequency f0:
Figure 25 gives the low-pass filter circuit figure of another sensing arrangement.Wherein R1, R2, R3 and R4 form one group it is complete
The resistance value size variation of bridge structure, R1 and R2 are contrary, and the resistance value size variation of R3 and R4 are contrary, R1 and R3 resistance value becomes
Change contrary.When have pressure effect on a sensor when, will cause operational amplifier+, the voltage difference at-both ends, and RC is constituted
The feedback loop of low pass, cutoff frequency f0Are as follows:
Figure 26 gives a kind of high-precision multistage instrument filtering and amplifying circuit structure chart of multistage low pass, wherein R1=R2=
The resistance value size variation of the sensor of R3=R4=R, R1, R2, R3 and R4 one group of full bridge structure of composition, R1 and R2 are contrary,
The resistance value size variation of R3 and R4 is contrary, R1 and R3 change in resistance is contrary.The wherein output resistance of C1 and sensor
The first rank low-pass filtering, cutoff frequency f will be constituted1:
R5 and C2, R6, C3 constitute second-order low-pass filtering, wherein R5=R6, C2=C3.The cutoff frequency of second-order low pass
f2:
It is exported in the afterbody of amplifier, R13 and C4 have carried out the passive low pass RC filtering of third rank, cutoff frequency
Rate:
This three rank can arbitrarily choose single order or multistage be filtered.
(2) algorithm noise reduction:
Specific threshold is set according to sensing arrangement feature and the sensed values database of actual measurement, handles noise.
Algorithm noise reduction is mainly to handle digital signal after AD, and the method for noise reduction mainly has: signal digital filter,
Mean value smoothing filtering and image denoising method.
Signal digital filter is by increasing multistage FIR IIR low-pass filter, and cutoff frequency can arrive for 1HZ
The power frequency notch filter of 100Hz and 50Hz filters out Hz noise.
Mean filter is the burr noise that can be removed in some signals, i.e.,
(3) image denoising:
Sensing data is considered as a picture data, the data for sensing dot matrix correspond to the value of each pixel on picture,
It is denoised using the related Denoising Algorithm of image, including morphology opening operation or form closed operation etc..I.e. to sensing data
The picture of formation carries out binary conversion treatment, is first expanded post-etching later or first corrodes the method expanded afterwards, carries out to data
Denoising.
2, recognizer
The embodiment of the present invention also provides a kind of sensing recognition methods comprising: number identification, whether overweight, body is dynamic, and
Sleeping position identification and adjusting algorithm, it is specific as shown in figure 27.
1, sensing matrix data acquire
The pressure of each sensitive zones is converted voltage by sensor array, is then converted to data-signal by ADC, from
And the pressure matrix S [r] [c] of whole bed is obtained, wherein r and c is respectively the line number and columns of array.
2, there is unmanned identification
Each pressure value of pressure matrix is determined, when all pressure values are respectively less than nobody decision threshold
Sth1 is then determined as nobody.
3, overweight identification
It sums to matrix all elements, Sum (S [i] [j]), if it exceeds threshold value Sowth1, then be determined as overweight；Or
If some element S [i] [j], is more than second threshold Sowth2, is equally also determined as overweight in matrix.
4, number identifies
Transverse gradients are asked to matrix S, gradSx takes the extreme value of the gradSx [j] of every row, determines number by extreme value number.
5, the identification whether normally lain
Image is converted by the pressure of block first, the edge of image is identified first, then pressure spot is clustered, from
It and is in pressure block by segmentation.Then trunk identification being carried out to block, a kind of method of trunk identification is the width for finding out every row,
Then using the number of rows of similar width as metastomium, the length and width and length-width ratio of metastomium are then found out, if length and width and
Length-width ratio is respectively interposed within the scope of certain, then the sleeping position for being judged to normally lying, as shown in figure 28.
6, based on the sleeping position recognizer of SVM machine learning
Classified using matrix pressure of the support vector machines (SVM) to above-mentioned acquisition, according to the normal direction of the plane of trunk
The angle of vector (direction: from back to chest) and the normal vector (direction: face-up) of bed surface is from 0~180 ° of progress sleeping position
It divides, multiple grades can be divided into, such as 0 °, 45 °, 90 °, 135 ° and 180 °.Wherein, since the metastomium of people is left and right pair
Claim, so not distinguishing using trunk left-half is support shaft or using right half part as support shaft, because for example with left side
Be divided into 45 ° of support shaft be equivalent using right half part as 135 ° of support shaft.So being uniformly defaulted as herein with left half
While be divided into supporting axis, then it can be found that 0 ° is to lie on the back, 180 ° are prostrate, and 90 ° are positive and lie on one's side.Therefore, we are from trunk
Normal vector and bed surface method phase vector angle angle, sleeping position is divided into 5 kinds.
Specific steps are as shown in figure 29, in which:
S1: the pressure matrix in the 5 of training sample under sleeping position is acquired；
S2: using the metastomium recognizer in [5], identifying the head-neck region portion of people, torso area, buttocks and
Thigh and calf region；
S3: calculating the characteristic value of pressure matrix, and this feature value specifically includes that
The pressure specific gravity of (1) four body region (head-neck region, torso area, buttocks and thigh and calf region),
(2) gradient magnitude and gradient direction of pressure pixel, such as the gradient of pixel (i, j):
Gi (i, j)=F (i+1, j)-F (i-1, j)；
Gj (i, j)=F (i, j+1)-F (i, j-1)；
G (i, j)=sqrt (Gi (i, j)2+Gj(i,j)2)；
γ (i, j)=arctan (Gj (i, j)/Gi (i, j))；
(3) torso area symmetry SYM:
The calculation process of SYM:
(4) the symmetry SYM of seat area；
(5) variance of the center of gravity of every row's leg area.
S4: the characteristic value under each sleeping position that S3 is obtained is as the input of SVM classifier
S5: classifier optimal separating hyper plane (w X)+b=0 between every two kinds of sleeping positions is found, and passes through building glug
Bright day function
According to the duality of Lagrangian, problem is converted are as follows:
s.t. αi>=0, i=1,2 ..., n
Optimal solution is finally acquired, decision function is obtained.
S6: acquiring the decision function between sleeping position two-by-two,
S7: the sleeping position being denoted as after final classification by nose count, more than poll.
7, algorithm is adjusted, specific steps are as shown in figure 31:
S1: obtain the essential information of user, comprising: gender, height, weight, BMI, trunk length shoulder breadth, bust, waist
It encloses, the information such as hip circumference.
S2: the muscle model and spine model under static state, the so-called static lower space for not considering trunk and bed are established
Positional relationship, can be consistent with the length direction of bed with torso length direction, and the method phase of trunk is 0 with the method phase angle of bed, makees
On the basis of.The size at each position of muscle model, that is, trunk, spine model, that is, vertebra length, several key node (cervical vertebras, chest
Vertebra, lumbar vertebrae and tail bone) curvature.
S3: pass through the position of user each region of sleeping position identification acquisition and the folder in body direction and bed length direction
Angle.
S4: the angle of the method phase and bed surface method phase of trunk is obtained by the sleeping position identification in step 6.
S5: can be obtained the spatial model of trunk and bed in conjunction with S2, S3, S4, i.e. each trunk position of people includes
The position of muscle and vertebra in the case where bed is as referential is determining.
S6: calculating the adjusting height of each pixel-matrix, and it is high to adjust the suitable adjustable that height can be weighed under muscle model
Adjusting height under degree and spine model is as final adjusting height.Due to the purpose final purpose of the height of adjusting be
Bed surface and vertebra obtain it is best be bonded and each position of vertebra obtains optimal power and supports, muscle must be taken into account certainly
Comfort level.
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 (9)
1. a kind of sensor for mattress, including sensing arrangement, the sensing arrangement include sensing layer, the sensing layer is from top to bottom
It successively include: flexible upper layer signal conducting shell, pressure sensing layer and flexible under-layer signal conductive layer, the pressure sensing layer includes
Point array sensor, strip sensor or isolated sensor, and side and/or the setting of following side above the sensing arrangement
There are convex concave architecture or hard material.
2. sensor according to claim 1, which is characterized in that the sensor includes sensitive zones and non-sensing unit
Domain, the coefficient of elasticity of the sensitive zones are greater than the coefficient of elasticity of non-sensitive zones.
3. sensor according to claim 1, which is characterized in that the sensor further includes airbag structure, the air bag knot
Structure includes air bag, sensor and airometer.
4. a kind of gasbag-type sensing device, including pressure sensor and air bag, the sensor are connect with spring, the sensor
It is respectively positioned in the air bag with spring, the pressure sensor is located at the top of air bag or bottom.
5. a kind of mattress, including sensor according to claim 1, further include air bag, it is provided with above the sensor
Comfort liner, lower section are provided with buffer layer, and certain thickness cutting is carried out on the comfort liner, and the cutting is penetrated or do not penetrated
The comfort liner.
6. mattress according to claim 5, which is characterized in that the pressure sensing layer is strip sensor, and described is cut
The direction cut is parallel with monomer sensor orientation in the strip sensor.
7. a kind of air bag regulating mattress, including multiple individual air bags, air valve and tracheae, which is characterized in that it further include transfer air bag,
The tracheae is discrete tracheae, and the multiple individual air bag is connect by discrete tracheae with transfer air bag, is arranged on discrete tracheae
There is air valve to be greater than the discrete tracheae for controlling gas flowing, the discrete tracheae and the bore of multiple individual air bag junctions
With the bore of transfer air bag junction；
Alternatively, two adjacent individual air bags pass through tracheae connection at both ends, an Air Valve Control is designed on each tracheae
The flowing of air-flow, the multiple individual air bag are integrally divided into three parts, respectively correspond head portion, spinal segment and legs and feet portion
Point, the air-flow in individual air bag in three parts can mutually circulate.
8. air bag regulating mattress according to claim 7, which is characterized in that the air bag regulating mattress further includes motor mould
Block, the motor module are attached by screw rod and nut with the transfer air bag.
9. a kind of intelligence adjusts bed, including the air bag regulating mattress according to any one of claim 5-8.
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| CN213429315U (en) | 2021-06-15 |
| WO2019237622A1 (en) | 2019-12-19 |
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