WO2014101253A1 - Dispositif de coussin d'air et procédé de détection de capacité de poids - Google Patents

Dispositif de coussin d'air et procédé de détection de capacité de poids Download PDF

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Publication number
WO2014101253A1
WO2014101253A1 PCT/CN2013/000529 CN2013000529W WO2014101253A1 WO 2014101253 A1 WO2014101253 A1 WO 2014101253A1 CN 2013000529 W CN2013000529 W CN 2013000529W WO 2014101253 A1 WO2014101253 A1 WO 2014101253A1
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WO
WIPO (PCT)
Prior art keywords
gas
pressure
layer
air
sensing
Prior art date
Application number
PCT/CN2013/000529
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English (en)
Chinese (zh)
Inventor
陈冠廷
潘信宏
刘昌和
陈昌毅
徐政富
黄正贤
Original Assignee
财团法人工业技术研究院
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Publication of WO2014101253A1 publication Critical patent/WO2014101253A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/18—Measuring force or stress, in general using properties of piezo-resistive materials, i.e. materials of which the ohmic resistance varies according to changes in magnitude or direction of force applied to the material
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/05—Parts, details or accessories of beds
    • A61G7/0527—Weighing devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/05—Parts, details or accessories of beds
    • A61G7/057—Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor
    • A61G7/05769—Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor with inflatable chambers
    • A61G7/05776—Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor with inflatable chambers with at least two groups of alternately inflated chambers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
    • G01G19/44—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing persons
    • G01G19/445—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing persons in a horizontal position
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G5/00—Weighing apparatus wherein the balancing is effected by fluid action
    • G01G5/04—Weighing apparatus wherein the balancing is effected by fluid action with means for measuring the pressure imposed by the load on a liquid
    • G01G5/045—Weighing apparatus wherein the balancing is effected by fluid action with means for measuring the pressure imposed by the load on a liquid combined with means for totalising the pressure imposed by several load-cells

Definitions

  • the present invention relates to an air cushion device and a load bearing sensing method, and more particularly to an air cushion device having a two-layer design and a heavy sensing method using the air cushion device. Background technique
  • Sitting and lying is one of the most basic activities of human beings. Human beings have many times in a sitting and lying position. Therefore, when the person is not sitting for a long time, the human body is prone to muscle pain and muscle stiffness. In addition, when the body is under pressure for a long period of time, for example, lying in a sitting position or sitting for a long time, it is also likely to cause diseases such as hemorrhoids, sores, eczema and hemorrhoids. Estimated costs for such diseases, up to billions of dollars per year.
  • decompression mattresses have been produced.
  • some decompression mattresses that do not require power, such as foam pads, fat pads, air pads or water pads, etc., which utilize the thickness and material properties of the mattress to achieve a reduced pressure effect.
  • some decompression mattresses use a power unit to adjust the internal air pressure of the mattress to achieve the effect of decompression, such as intermittent air cushion, low pressure air floating mattress, electric continuous side flip bed or silica sand bed, etc. .
  • understanding the state of stress between the human body and the environment is an indispensable indicator for promoting human health. Summary of the invention
  • the air cushion device of the present invention includes at least one pressure sensing air enthalpy module.
  • Pressure Sensing The gas enthalpy module includes a regulated gas enthalpy layer, a pressure equalizing gas layer, and a pressure sensing layer.
  • the pressure equalizing gas layer is disposed on the gas pressure gas layer, wherein the pressure equalizing gas layer comprises a plurality of first cylindrical gas chambers communicating with each other and a plurality of second cylindrical gas chambers communicating with each other.
  • the first cylindrical gas and the second cylindrical gas are stacked on the stabilized gas channel layer and arranged in an array.
  • the pressure sensing layer is disposed between the stabilizing gas layer and the pressure equalizing gas layer to sense the pressure of the plurality of portions of the pressure equalizing gas layer.
  • the load bearing sensing method of the present invention is for sensing load bearing via an air cushion device.
  • the air cushion device includes at least one pressure sensing air enthalpy module, and each pressure sensing air enthalpy module includes a gas pressure gas enthalpy layer, a pressure equalizing gas enthalpy layer, and A pressure sensing layer.
  • the pressure equalizing gas layer is disposed on the gas pressure gas layer, wherein the pressure equalizing gas layer comprises a plurality of first cylindrical gas chambers communicating with each other and a plurality of second cylindrical gas chambers communicating with each other.
  • the first cylindrical gas and the second cylindrical gas are stacked on the gas-regulating gas barrier layer and arranged in an array.
  • the pressure sensing layer is disposed between the stabilizing gas layer and the pressure equalizing gas layer to sense the pressure applied to the plurality of portions of the pressure equalizing gas layer.
  • the load-bearing sensing method includes the following steps.
  • the weight sensing module receives a weight through the pressure sensing. Increase the pressure of the regulated gas enthalpy layer and measure the sum of the pressures by the pressure sensing gas enthalpy module. Control the pressure relief of the gas pressure layer. Measured by each interval parameter. The sum of the pressures of each interval parameter is measured. A sum of the pressures of the pressure sensing layers is obtained corresponding to a parameter of the stabilized gas channel layer.
  • the pressure sensing gas sampling module of the air cushion device of the present invention arranges the pressure equalizing gas layer on the gas pressure gas layer, and the pressure sensing layer is disposed between the gas pressure gas layer and the pressure gas layer.
  • the pressure applied to the plurality of portions of the pressure equalizing gas layer is sensed. Accordingly, the air cushion device can improve the stability by stabilizing the gas enthalpy layer, and adjust the pressure equalizing gas layer according to the sensing result of the pressure sensing layer, thereby having better comfort, and the load sensing method can pass the air cushion
  • the device senses weight.
  • FIG. 1 is a schematic view of an air cushion device according to an embodiment of the present invention.
  • Figure 2 is a partial enlarged cross-sectional view of the air cushion device of Figure 1;
  • FIG. 3 is a schematic view of the pressure sensing air module of Figure 1;
  • FIG. 4 is a schematic view showing the first tubular gas cylinder of the pressure sensing gas cylinder module of FIG. 3;
  • FIG. 5 is a schematic view showing the second tubular gas cylinder of the pressure sensing gas cylinder module of FIG. 3;
  • Figure 6 is a schematic view of the pressure sensing air module of Figure 3 in another perspective
  • FIG. 7 is a schematic diagram of the pressure sensing gas cylinder module of FIG. 3 showing the stabilized gas channel layer
  • Figure 8 is a side elevational view of the pressure sensing gas cylinder module of Figure 7 showing the stabilized gas channel layer;
  • FIG. 9 is a schematic diagram of a pressure sensing circuit of the pressure sensing layer of FIG. 2;
  • Figure 10 is a schematic illustration of the pressure sensing element of Figure 9;
  • Figure 11 is a schematic view showing the characteristic curve of the pressure sensing element of Figure 10 under different air pressures and different pressure regulating gas layers;
  • Figure 12 is a partial enlarged cross-sectional view of the pressure sensing air module of Figure 3;
  • 15 is a flow chart showing the load sensing of the pressure sensing air module of FIG. 14;
  • Figure 16 is a graph showing the pressure sensing result of Figure 15;
  • 17 is a flow chart showing another load sensing of the pressure sensing air module of FIG. 14;
  • Figure 18 is a graph showing the results of the pressure sensing of Figure 17. detailed description
  • the air cushion device 10 includes a plurality of pressure sensing air module 100 and an anti-roll module 12.
  • the anti-roll module 12 surrounds the pressure sensing air module 100 to prevent the pressure sensing air module 100 from being dumped and dispersed.
  • the air cushion device 10 of the present embodiment is exemplified by a method including six pressure sensing gas cylinder modules 100, wherein the pressure sensing gas cylinder modules 100 are arranged in an array of 2x3, and the anti-rolling module 12 is arranged in an array of pressure sensing atmospheres. Module 100.
  • the air cushion device may include one or other number of pressure sensing gas cylinder modules 100, and the present invention does not limit the number and arrangement of pressure sensing gas cylinder modules 100.
  • the anti-roll module 12 is, for example, an anti-rolling pad, and is arranged in an array of pressure sensing air module 100 to fix the pressure sensing air module 100.
  • the anti-roll module may be a foam pad or other component that can be used to surround and fix the pressure sensing gas module 100.
  • the present invention does not limit the type of the anti-roll module, nor does it limit the anti-tip module. Set or not.
  • the anti-roll module 12 is actually located at the outermost side of the air cushion device 10 and forms an annular shape, and the height of the anti-roll module 12 is greater than the height of the pressure sensing air module 100, for example, the height difference between the two is 1 cm to 2 cm from the ground. .
  • the height difference between the anti-roll module 12 and the pressure sensing air module 100 can cause the air cushion device 10 to be slightly recessed from the outside to the inside, so that the air cushion device 10 is more ergonomic.
  • the air cushion device 10 for example, lying on the pressure sensing air module 100 of the air cushion device 10, it has better comfort.
  • Fig. 2 is a partially enlarged cross-sectional view showing the air cushion device of Fig. 1; 3 is a schematic view of the pressure sensing gas cylinder module of FIG. 1.
  • the pressure sensing gas sensor module 100 includes a gas pressure gas layer 110 , a pressure equalizing gas layer 120 , and a pressure sensing layer 130 .
  • the pressure equalizing gas layer 120 is disposed on the gas-stabilizing gas layer 110, wherein the pressure-pressure gas layer 120 includes a plurality of first cylindrical gas tubes 122 communicating with each other and a plurality of second cylindrical gas tubes 124 communicating with each other.
  • the first cylindrical gas tube 122 and the second cylindrical gas tube 124 stand on the gas-regulating gas layer 110 and are arranged in an array.
  • the pressure sensing layer 130 is disposed between the stabilized gas channel layer 110 and the pressure equalizing gas layer 120 for sensing the pressure applied to the plurality of portions of the pressure equalizing gas layer 120.
  • the air cushion device 10 of the present embodiment is composed of six pressure sensing air enthalpy modules 100, each of the pressures
  • the force sensing air module 100 is composed of a stabilized gas channel layer 110, a pressure equalizing gas layer 120 and a pressure sensing layer 130. Therefore, the modular air cushion device 10 and the pressure sensing air module 100 have good assembly.
  • FIG. 4 is a schematic view showing the first tubular gas cylinder of the pressure sensing gas cylinder module of FIG. 3.
  • Fig. 5 is a schematic view showing the second cylindrical gas cylinder of the pressure sensing gas cylinder module of Fig. 3. 4 and 5 respectively illustrate the second cylindrical gas chamber 124 and the first cylindrical gas chamber 122 to clearly show the arrangement and position of the first cylindrical gas chamber 122 and the second cylindrical gas chamber 124.
  • the first cylindrical air chambers 122 are respectively arranged in a plurality of first rows A1, and the first cylindrical air chambers 122 of the first rows A1 are in communication with each other.
  • the second cylindrical gas tubes 124 are respectively arranged in a plurality of second rows A2, and the second cylindrical gas tubes 124 of the second rows A2 are in communication with each other.
  • the communication manner between the first cylindrical gas chamber 122 and the second cylindrical gas chamber 124 is, for example, a hole is formed in the side walls of the first cylindrical gas chamber 122 and the second cylindrical gas chamber 124, and correspondingly opened by ultrasonic waves.
  • the holes are joined to each other such that the first cylindrical gas tubes 122 of the respective first rows A1 communicate with each other and the second cylindrical gas tubes 124 of the second rows A2 communicate with each other, but the present invention is not limited to the above-described communication method.
  • the pressure equalizing gas layer 120 is exemplified by including twenty first cylindrical gas cylinders 122 and twenty second cylindrical gas cylinders 124.
  • the first cylindrical gas cylinders 122 are arranged in four first rows A1, each of the first rows A1 has five first cylindrical gas cylinders 122, as shown in FIG. 4, and the second cylindrical gas cylinders 124 are arranged in four.
  • each of the second rows A2 has five second cylindrical gas dams 124, as shown in FIG.
  • the first cylindrical gas chamber 122 arranged in the first row A1 and the second cylindrical gas chamber 124 arranged in the second row A2 are alternately arranged to arrange the first cylindrical gas chamber 122 and the second cylindrical gas chamber 124 Make a 5x8 array, as shown in Figure 3.
  • the alternate arrangement in the embodiment is, for example, that the first row A1 and the second row A2 are sequentially arranged such that the first rows A1 are not adjacent and the second rows A2 are not adjacent.
  • the alternate arrangement may be that each of the two first rows A1 is one unit and each two second rows A2 is one unit, and the two first rows A1 of each unit and the two units of each unit
  • the second row A2 is arranged in order, so that the two first rows A1 of the respective units are not adjacent to each other, and the two second rows A2 of the respective units are not adjacent to each other, and may also be other irregular alternately arranged manners, and the present invention does not limit the first
  • the number of the cylindrical gas tubes 122 and the second cylindrical gas tubes 124 does not limit the manner in which the first rows A1 and the second rows A2 are alternately arranged.
  • the pressure sensing air module 100 further includes a plurality of straps 140 .
  • the first cylindrical gas chambers 122 arranged in the first row A1 and the second cylindrical gas tubes 124 arranged in the second row A2 are respectively disposed on the corresponding belts 140, and are fixed to the pressure regulating gas by the belts 140.
  • the band 140 is, for example, a toroidal band. Therefore, the first cylindrical gas chamber 122 of each of the first rows A1 and the second cylindrical gas chambers 124 of the second rows A2 are fixed to the gas-regulating gas by surrounding the band 140 around the gas-regulating gas barrier layer 110.
  • the first layered air enthalpy 122 is formed on the enamel layer 110 to avoid standing on the damped gas layer 110. And the second cylindrical gas cylinder 124 is dumped.
  • the pressure sensing gas cylinder module 100 further includes a first gas pipe 150, a second gas pipe 160, and a third gas pipe 170.
  • the first air tube 150 is connected to the first cylindrical air chamber 122 of the first row A1, and the second air tube 160 is connected to the second cylindrical air chamber 124 of the second row A2.
  • the first air pipe 150 since the first cylindrical air ports 122 of the first row A1 are in communication with each other, the first air pipe 150 only needs to be connected to one of the first cylindrical air ports 122 of each of the first rows A1 to connect all The first cylindrical gas cylinder 122.
  • the second air pipe 160 since the second cylindrical air dams 124 of the second row A2 are in communication with each other, the second air pipe 160 only needs to be connected to one of the second cylindrical air dams 124 of each of the second rows A2 to connect all the first Two tubular gas rafts 124.
  • Figure 6 is a schematic illustration of the pressure sensing gas module of Figure 3 in another perspective.
  • the first cylindrical gas chamber 122 arranged at the outermost side of the first row A1 and the second cylindrical gas chamber 124 arranged at the outermost side of the second row A2 are arranged.
  • the length is longer than the length of the remaining first cylindrical gas tube 122 and the second cylindrical gas tube 124.
  • the remaining first cylindrical gas chamber 122 and the second cylindrical gas chamber 124 stand on the top surface S1 of the gas-regulating gas layer 110, and the first cylindrical gas chambers 122 arranged in the outermost side of the first row A1 are arranged.
  • the second cylindrical gas bulb 124 on the outermost side of the second row A2 extends to the side surface S2 of the pressure-stabilizing gas layer 110.
  • all of the first cylindrical gas cylinders 122 of the pressure equalizing gas layer 120 are substantially coplanar with the tops of the second cylindrical gas cylinders 124, and are arranged in the first cylindrical shape of the outermost side of the first row A1 and the second row A2.
  • the length of the gas cylinder 122 and the second cylindrical gas cylinder 124 is longer than the length of the remaining first cylindrical gas chamber 122 and the second cylindrical gas chamber 124 to extend to the side surface S2 of the gas-tight gas layer 110.
  • the first cylindrical gas chamber 122 and the second cylindrical gas chamber 124 which are arranged at the outermost side of the first row A1 and the second row A2 and extend to the side surface S2 of the pressure-stabilizing gas layer 110 are The entire side surface S2 is not shielded so that the first cylindrical gas chamber 122 and the bottom portions 122a and 124a of the second cylindrical gas chamber 124 and the partial side surface S2 of the gas-regulating gas barrier layer 110 are extended to the side surface S2 of the gas-tight gas layer 110.
  • the accommodating space S is formed as shown in FIG. 2.
  • the first air pipe 150, the second air pipe 160, and the third air pipe 170 are accommodated in the accommodating space S, wherein the first air pipe 150 is connected to the outermost first cylindrical shape of each of the first rows A1 by a plurality of first air valves.
  • the bottom portion 122a of the gas cylinder 122, the second gas pipe 160 is connected to the bottom portion 124a of the outermost second cylindrical gas bulb 124 of each second row A2 by a plurality of second gas valves 162, and the third gas pipe 170 is connected to the third gas valve 172 by the third gas valve 172.
  • the side surface S2 of the stabilized gas enthalpy layer 110 is connected as shown in FIGS. 4 to 6.
  • first air tube 150, the second air tube 160 and the third air tube 170 can inflate or deflate the first cylindrical gas tube 122, the second cylindrical gas tube 124 and the pressure regulating gas layer 110, respectively.
  • the air pressure of the first cylindrical gas chamber 122, the second cylindrical gas chamber 124, and the pressure-stabilizing gas layer 110 is adjusted.
  • each of the second rows A2 communicating with each other are simultaneously inflated or deflated to have the same air pressure, wherein each The first gas valve 152 and each of the second gas valves 162 can be selectively opened or closed according to requirements, so that the first cylindrical gas chamber 122 of each first row A1 and the second tubular gas of each second row A2
  • the crucibles 124 can be operated separately with different air pressures.
  • FIG. 7 is a schematic diagram of the pressure sensing gas cylinder module of FIG. 3 showing the stabilized gas channel layer.
  • 8 is a side elevational view of the pressure sensing gas cylinder module of FIG. 7 showing the stabilized gas channel layer. Please refer to FIG. 7 and FIG. 8.
  • FIG. 7 only shows a portion of the pressure equalizing gas layer 120 to clearly show the stabilized gas channel layer 110.
  • the stabilized gas channel layer 110 includes a sub-band 112 disposed in the stabilizing gas layer 110 and connected to the upper wall 114 and the lower wall 116 of the gas-regulating gas layer 110.
  • the stabilized gas channel layer 110 is a block-shaped independent gas cylinder.
  • the stabilized gas channel layer 110 is respectively connected to the upper wall 114 and the lower wall 116 of the gas-regulating gas layer 110 through three strips 112, so that the top surface S1 and the bottom surface of the gas-regulating gas layer 110 are provided.
  • S3 is relatively flat, wherein the support belts 112 respectively correspond to the joints of the first cylindrical gas chamber 122 and the second cylindrical gas chamber 124, so that the first cylindrical gas chambers 122 and the second tubular gas tubes 124 are respectively Positioned between the corresponding two bands 112. Accordingly, the contact area of the pressure sensing layer 130 disposed on the top surface S1 of the stabilized gas channel layer 110 and the first cylindrical gas channel 122 and the second cylindrical gas channel 124 of the pressure equalizing gas layer 120 is more average. In order to improve the accuracy of the sensing result, and the contact area of the bottom surface S3 of the stabilized gas pressure layer 110 with the ground is increased to increase the stability of the air cushion device 10.
  • the stabilized gas channel layer 110 can have one or more sub-bands 112, and the present invention does not limit the number of sub-bands 112.
  • the support connecting the upper wall 114 and the lower wall 116 of the stabilized gas channel layer 110 may also be an annular support. Both sides of the annular branch are connected to the upper wall 114 and the lower wall 116 to achieve the above functions.
  • the annular band itself forms a ring shape, so that the top view of the structure of the gas-regulating gas layer 110 is similar to the "back" shape, wherein the outer shape of the "return” type is the side wall of the gas-regulating gas layer 110, and The inner loop of the back shape is an annular support, but the invention does not limit the type, shape and setting of the support.
  • the support band 112 has a plurality of holes (not shown). When the gas-stabilizing gas layer 110 is filled with gas, the gas-regulating gas layer 110 is divided into a plurality of spaces by the branch 112, but the gas flows through the holes. The space of the gas-filled layer 110 is stabilized so that the entire stabilized gas-filled layer 110 has the same gas pressure.
  • the pressure sensing layer 130 includes a plurality of pressures.
  • the force sensing element 132 is disposed between the corresponding first cylindrical gas chamber 122 and the bottom portions 122a and 124a of the corresponding second cylindrical gas bulb 124 and the gas-regulating gas layer 110, as shown in FIG. 4 and FIG. .
  • the pressure sensing element 132 may correspond to each of the first cylindrical gas tube 122 and each of the second cylindrical gas tubes 124, and may also selectively correspond to a portion of the first cylindrical gas chamber 122 and the second tubular gas.
  • the ⁇ 124 is configured to sense the pressure applied to the plurality of portions of the pressure equalizing gas layer 120.
  • the pressure sensing elements 132 are arranged in a pressure sensing array and are interconnected via a connecting line 134.
  • the soft array sensing element using the soft electronic component technology is in response, and the pressure sensing element 132 of the present embodiment is the above-described soft array sensing element.
  • the pressure sensing element 132 is a piezoresistive sensing technology.
  • the upper and lower electrode layers 132b and the upper and lower piezoresistive sensing layers 132c are sequentially stacked on the inner side of the upper and lower substrates 132a, and the pressure sensitive adhesive 132d is disposed around the upper and lower substrates 132a.
  • the upper and lower substrates 132a are bonded.
  • the upper and lower substrates 132a are made of a soft plastic material so that the pressure sensing element 132 has a flexible property, and the upper and lower piezoresistive sensing layers 132c can be brought into contact with each other.
  • the piezoresistive sensing layer 132c is a piezoresistive material which uniformly disperses nano-conductive particles in a high-molecular polymer by using a nano-dispersion technique to form a piezoresistive composite material having a linear reaction. Therefore, the nano conductive particles make the surface of the piezoresistive sensing layer 132c a rough surface that can be slightly deformed, so that the upper and lower piezoresistive sensing layers are caused by a slight deformation generated by the rough surface when the pressure sensing element 132 is applied by the positive force.
  • the contact area of 132c increases.
  • R resistance value
  • the piezoresistive sensing layer 132c is deformed by the pressure, so that the cross-sectional area (A) of the piezoresistive sensing layer 132c is increased to cause the output resistance value to decrease.
  • the upper and lower electrode layers 132b sense the change in the resistance value and record and judge the change in the resistance value by the back end system (for example, the sensing pressure sensing circuit 14a and the visual interface 16 of the control module 14 to be described later).
  • the upper and lower piezoresistive sensing layers 132c can change the degree of contact between the two via the magnitude of the applied positive force, so that the magnitude of the sensed resistance value also changes.
  • the pressure is removed, the slight deformation of the upper and lower piezoresistive sensing layers 132c can be quickly restored to the original state, so that no significant hysteresis occurs, and at the same time, good linearity and reproducibility are obtained.
  • the air cushion device 10 further includes a control module 14.
  • Control module 14 is connected to pressure sensing The layer 130, wherein the pressure sensing layer 130 senses the pressure of the portion of the pressure-receiving layer 120, and the control module 14 receives a sensing result of the pressure sensing layer 130.
  • the control module 14 includes a pressure sensing circuit 14a, and the pressure sensing circuit 14a is shown in FIG.
  • an analog front end signal processing circuit (analog frontend) with a microcontroller including a row controller and a row controller ( The row control signal and the column control signal output by the column controller are used to read the resistance value of the pressure sensing element 132, and then via an analog to digit converter (ADC). The analog value of the resistance value is converted to digital data. Then, the digital data is processed by a digital controller through a micro controller, and then the data is directly transmitted to the RS232 signal transmission and reception conversion circuit through the microcontroller.
  • ADC analog to digit converter
  • the air cushion device 10 further includes a visualization interface 16.
  • the visual interface 16 is connected to the control module 14 for displaying the sensing result of the pressure sensing layer 130 received by the control module 14.
  • the visualization interface 16 is connected to the RS232 signal transmission and reception conversion circuit described above.
  • the RS232 signal transmission and reception conversion circuit outputs the data to the visualization interface 16 for displaying the pressure.
  • the pressure distribution pattern of the pressure sensing array in which the pressure sensing elements 132 of the sensing layer 130 are arranged.
  • the specifications and types of the pressure sensing circuit 14a and the visualization interface 16 of the control device 14 described above are as follows:
  • the input power is a direct current (DC) with a voltage of 5 volts (V) and a current of 0.5 amps (A) or directly Use USB power supply through USB connection;
  • digital output data is standard RS232 output interface, its digital transmission rate (baud rate) is 38400bps (bit per second) or 9600bps;
  • pressure sensing circuit 14a can be read up to 32x32
  • the array of 1024 pressure sensing elements 132, and the sensor interface (sensor interface) is a 2.54 connector, which is a single row of rows (female).
  • the visual interface 16 is, for example, a human computer interface such as a notebook computer (NB) or a personal computer (PC) device for displaying a pressure distribution pattern of the pressure sensing layer 130.
  • NB notebook computer
  • PC personal computer
  • the specification of the pressure sensing circuit 14a and the type of the visual interface 16 are only one embodiment of the present invention, and the present invention is not limited thereto.
  • the pressure sensing element 132 of the present embodiment is a soft piezoresistive sensing element, and the upper and lower piezoresistive sensing layers 132c can change the resistance value via the magnitude of the applied positive force
  • the resistance value of the pressure sensing element 132 is subjected to the weight of the pressure equalizing gas layer 120 and the gas pressure of the gas pressure regulating layer 110. influences.
  • the pressure sensing layer 130 is a pressure sense via a plurality of portions corresponding to the pressure of the pressure equalizing gas layer 120. The resistance value of the measuring element 132 changes to know the pressure concentration point.
  • the pressure sensing layer 130 is subjected to a fixed weight (for example, the weight of the pressure equalizing gas layer 120), and the gas pressure of the pressure regulating gas layer 110 is uniform, so that each pressure feeling
  • the sensing elements 132 have the same resistance starting and sensing characteristics.
  • the initial resistance value and the sensing characteristic of each pressure sensing element 132 are subjected to the weight carried by the pressure sensing element 132 (for example, the weight of the pressure equalizing gas layer 120) and the gas pressure of the gas pressure regulating layer 110. influences.
  • FIG. 11 is a graphical representation of the characteristic curve of the pressure sensing element of Figure 10 under different air pressures and different gas pressure layers.
  • FIG. 11 is a schematic diagram showing the characteristic curves of the pressure sensing element 132 under different air pressures and different gas pressure layers.
  • Each curve represents the conductance (conductivity) of the pressure sensing element 132 at different pressures of the gas-regulating gas layer 110, which is subjected to different weights (unit: gram), wherein the horizontal axis is the weight, longitudinal The axis is the conductance value.
  • the curve group shows the reciprocal (1/R) of the resistance value of the pressure sensing element 132 under different pressures of the gas pressure layer 110 under different pressures, and the upper half
  • the curve group shows the reciprocal (1/AR) of the difference in resistance values of the pressure sensing element 132 under different pressures of the gas pressure layer 110 under different pressures and without bearing weight.
  • the pressure sensing element 132 can adjust its sensing characteristics by adjusting the air pressure of the stabilized gas channel 110. After the gas pressure of the stabilized gas enthalpy layer 110 is fixed, the weight of the pressure sensing layer 130 is also fixed due to the uncompressed pressure equalizing gas layer 120, so the initial resistance value and the sensing characteristic of the pressure sensing element 132. It is thus also fixed (its sensing characteristics such as one of the curves of Fig. 11). Therefore, the resistance values of the respective pressure sensing elements 132 are the same before the pressure equalizing gas layer 120 is not subjected to additional pressure.
  • the pressure sensing elements 132 corresponding to those portions subjected to the pressure change their resistance values according to the pressure values under a fixed sensing characteristic, and pass The change in the resistance value of each of the pressure sensing elements 132 is measured to know the position of the portion under pressure and its weight, and the result is transmitted to the pressure sensing circuit 14a of the control device 14 of FIG. 9 and the visualization interface 16 to determine The pressure concentration point on the compressed gas layer 120.
  • the pressure sensing element 132 can be used to measure the pressure concentration position by changing the resistance value.
  • the total weight is measured, for example, by measuring the weight of the patient.
  • the measuring method is, for example, that the user (patient) lies on the pressure equalizing gas layer 120 of the air cushion device 10, so that the respective pressure sensing elements 132 change the resistance value by withstanding the pressure, and the pressure feeling is known by the resistance value change.
  • the weight of the portion of the pressure equalizing gas layer 120 corresponding to the measuring element 132, and the sum of the weights corresponding to the difference value of each resistance value is User's weight.
  • Figure 12 is a partial enlarged cross-sectional view of the pressure sensing air module of Figure 3.
  • the pressure sensing gas sensor module 100 further includes a plurality of auxiliary detecting sheets 180.
  • the auxiliary detecting piece 180 is disposed at the bottom portion 122a of the corresponding first cylindrical gas chamber 122 and the bottom portion 124a of the corresponding second cylindrical gas chamber 124.
  • the auxiliary detecting piece 180 is disposed between the pressure sensing element 132 and the bottom portion 122a of the corresponding first cylindrical air chamber 122, or is disposed on the pressure sensing element 132 and the corresponding second cylindrical air valve 124.
  • the bottom portion 124a is used to assist the pressure sensing element 132 to sense the pressure of the pressure equalizing gas layer 120, for example, to pass the pressure of the pressure equalizing gas layer 120 through the first cylindrical gas tube 122 and the second tube.
  • the auxiliary detection sheet 180 of the gas cartridge 124 is accurately transmitted to the pressure sensing element 132.
  • the auxiliary detecting piece 180 may be disposed on the pressure sensing element 132 or directly on the bottom portion 122a of the first cylindrical gas chamber 122 and the bottom portion 124a of the corresponding second cylindrical gas chamber 124.
  • the present invention does not limit the auxiliary detection.
  • FIG 13 is a schematic diagram of the control circuit of the pressure sensing air module of Figure 3.
  • the air cushion device 10 includes an inflation module 18.
  • the gas filling module 18 is connected to the pressure equalizing gas layer 120 and the control module 14.
  • the control module 14 controls the inflation module 18 according to the sensing result of the pressure sensing layer 130 to adjust the air pressure of the pressure equalizing gas layer 120 through the inflation module 18.
  • the inflation module 18 connects the first air tube 150, the second air tube 160 and the third air tube 170, and the control module 14 can control the inflation module 18 to inflate or deflate the first air tube 150, the second air tube 160 and the third air tube 170, and The first gas valve 152, the second gas valve 162, and the third gas valve 172 are controlled to be opened or closed.
  • the inflation module 18 adjusts the air pressure of the stabilized gas channel layer 110 via the third gas pipe 170 and the third gas valve 172 to fix the sensing characteristics of the pressure sensing layer 130.
  • the pressure sensing layer 130 senses the position and pressure value of those portions subjected to the pressure through the pressure sensing element 132, and The sensing result is transmitted to the visualization interface 16 via the pressure sensing circuit 14a of FIG. 9 to clearly know the position and pressure value of the pressure concentration point of the pressure equalizing gas layer 120.
  • the control module 14 controls the inflation module 18 according to the sensing result of the pressure sensing layer 130, including controlling the first tubular valve 122 corresponding to the pressure-bearing portion or the first air valve connected to the second tubular gas valve 124. 152 or the second gas valve 162 to open the corresponding first gas valve 152 or second gas valve 162. Therefore, the inflation module 18 inflates or deflates the pressure-bearing first cylindrical gas tube 122 or the second cylindrical gas tube 124 via the first air tube 150 or the second air tube 160 to adjust the pressure of the pressure equalization gas layer 120. The pressure of the first cylindrical gas chamber 122 or the second cylindrical gas chamber 124 corresponding to those portions, The pressure applied to those portions of the pressure equalizing gas layer 120 is thus dispersed. Accordingly, the air cushion device 10 has a better comfort.
  • FIG. 14 is a schematic illustration of the pressure sensing of the pressure sensing air module of Figure 3.
  • 15 is a flow chart showing the load sensing of the pressure sensing air module of FIG. 14 is a schematic diagram of the pressure sensing gas cylinder module 100 bearing the weight W and sensing the pressure value through the pressure sensing layer 130, wherein the pressure sensing layer 130 only has a portion of the second tubular gas corresponding to the pressure equalizing gas layer 120.
  • the pressure sensing element 132 of the crucible 124 and its measurement result are exemplified.
  • the load bearing sensing method for sensing the load through the air cushion device 10 includes the following steps.
  • the weight of the gas cylinder module 100 is taken up by the pressure sensing ⁇ .
  • the pressure of the stabilized gas enthalpy layer 110 is increased to fix the stabilized gas enthalpy layer 110 to a higher pressure value, for example, a pressure value greater than one (PSI).
  • PSI pressure value greater than one
  • the pressure sensing layer 130 of the pressure sensing gas venting module 100 measures the pressure value at each point, as shown in the output of FIG. 14 to accumulate the points.
  • the pressure value is the sum of the pressures.
  • the pressure-regulating gas layer 110 is controlled to be depressurized via the control module 14 of Fig. 13, and is measured at intervals of each interval during the pressure release process.
  • the parameter measured by the load-bearing sensing method is the pressure release value of the stabilized gas layer 110
  • the interval parameter is an interval pressure at which the pressure-regulating gas layer 110 performs pressure relief.
  • the air cushion device 10 of the present embodiment performs a measurement at intervals of each interval, for example, the pressure-regulating gas layer 110 measures the sum of pressures at a pressure of the pressure sensing layer 130 at a pressure of 0.3 (PSI).
  • the above interval pressure is not limited to 0.3 (PSI), which is only used for illustration, and the smaller the value of the interval pressure, the more accurate the curve obtained.
  • Figure 16 is a graph showing the results of the pressure sensing of Figure 15. Please refer to FIG. 14 to FIG. 16 , wherein FIG. 16 illustrates the pressure of the pressure-regulating gas layer 110 corresponding to the pressure measured by the pressure sensing layer 130 when the pressure sensor ⁇ module 100 is subjected to different weights. Multiple curves. Therefore, Fig. 16 can be regarded as a database in which the pressure sensor ⁇ module 100 is used in advance to measure the pressure sum by the above-described measurement method under the condition that the pressure sensor ⁇ module 100 is subjected to different weights. From the multiple curves in Figure 16, the pressure sensor ⁇ module can be seen.
  • the pressure of the stabilized gas layer 110 and the pressure sensing layer 130 are different in the sum of the pressures measured during the pressure release of the gas-tight layer 110. Therefore, the curve measured in FIG. 15 corresponds to the database of FIG. 16 (the curve of FIG. 15 is shown by a broken line), and the weight W corresponding to the curve of FIG. 15 can be estimated via the database of FIG.
  • the curve obtained by the above-described measurement method falls between the two curves of the database of FIG. 16, and the two curves respectively represent the pressure sensing gas sensor module 100. With a weight of 15 kg and a weight of 25 kg, it can be estimated that the weight W is about 20 kg.
  • the pressure sensing schematic diagram of the pressure sensing air module 100 of FIG. 14 can also measure the weight by the load sensing process of FIG. 17, wherein the parameters of the load sensing process of FIG. 15 are stable.
  • the pressure of the pressure enthalpy layer 110 is released, and the parameter of the load sensing process of FIG. 17 is the pressure release time of the tempering gas layer 110. Therefore, the load-bearing sensing process of Figure 17 is based on the measurement of each interval.
  • the method for sensing the weight via the air cushion device 10 includes the following steps.
  • the weight of the gas cylinder module 100 is taken up by the pressure sensing ⁇ .
  • the pressure of the stabilized gas enthalpy layer 110 is increased and fixed to a higher pressure value, for example, a pressure value greater than 1 (PSI), and the pressure value is measured by the pressure sensing gas enthalpy module 100 via the pressure sensing layer 130, The sum of the pressures is obtained by accumulating the pressure values.
  • PSI pressure value greater than 1
  • the pressure-regulating gas layer 110 is controlled by the control module 14 of FIG. 13 and is measured at intervals of each interval during the pressure-relief process, wherein the parameter of the embodiment is the pressure-relief of the gas-tight gas layer 110.
  • Time, and the interval parameter is an interval time during which the steady-state gas layer 110 is depressurized. Therefore, the air cushion device 10 of the present embodiment performs measurement once every interval time, for example, the voltage of the gas-regulating gas layer 110 is measured for 1 second, that is, the sum of the pressures at that time.
  • the above interval time is not limited to 1 second, and the smaller the interval time value, the more accurate the obtained curve is.
  • FIG. 18 is a graph showing the pressure sensing result of FIG. 17. Please refer to FIG. 14 , FIG. 17 and FIG. 18 , wherein FIG. 18 illustrates that the pressure sensor ⁇ module 100 is subjected to different weights, and the pressure relief time of the stabilized gas enthalpy layer 110 corresponds to the pressure sensing layer 130 . Multiple curves of the sum of the measured pressures. Therefore, FIG. 18 can be regarded as a database composed of the weights calculated by measuring the sum of the pressures by the above-described measurement method with the pressure sensor ⁇ module 100 being subjected to different weights in advance. It can be seen from the plurality of curves of FIG.
  • the pressure sensor ⁇ module 100 is subjected to different weights, the pressure release time of the stabilized gas enthalpy layer 110, and the pressure sensing layer 130 are depressurized in the tempered gas layer 110.
  • the curve of the sum of the pressures measured during the process is different. Therefore, the curve measured in FIG. 17 corresponds to the database of FIG. 18 (the curve of FIG. 17 is shown by a broken line), and the weight W corresponding to the curve of FIG. 17 can be estimated via the database of FIG.
  • the curve obtained by the above-described measurement method falls between the curves of 10 kg and 15 kg in Fig. 16, so that the weight W can be estimated to be about 12 kg.
  • the pressure sensing gas cylinder module 100 can measure the weight it bears by the two measurement methods described above.
  • the air cushion device of the present invention includes a pressure sensing air enthalpy module, and the pressure sensing air enthalpy module includes a gas tempering gas layer 110, a pressure equalizing gas layer 120 and a pressure sensing layer 130, so that the modular air cushion The device has good assembly.
  • the pressure sensing gas enthalpy module arranges the pressure equalizing gas layer on the stabilized gas enthalpy layer to improve stability by stabilizing the gas enthalpy layer, and the pressure sensing layer is disposed in the gas tempering layer and the pressure equalizing gas layer Between the two, the pressure sensing layer is connected to the visual interface to display the sensing result of the pressure sensing layer.
  • the air cushion device further includes a control module and an inflation module for adjusting the air pressure of those portions of the pressure equalizing gas layer that are subjected to the pressure according to the sensing result of the pressure sensing layer, thereby dispersing the pressure of the pressure equalizing gas layer and having the pressure Better comfort. Accordingly, the air cushion device has good assembly, stability and comfort.

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  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Nursing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Invalid Beds And Related Equipment (AREA)

Abstract

L'invention concerne un dispositif de coussin d'air (10) qui comprend au moins un module d'airbag de détection de pression (100). Chaque module d'airbag de détection de pression (100) comprend une couche d'airbag stabilisant la pression (110), une couche d'airbag égalisant la pression (120) et une couche détectant la pression (130). La couche d'airbag égalisant la pression (120) est disposée sur la couche d'airbag stabilisant la pression (110), et la couche d'airbag égalisant la pression (120) comprend de nombreux premiers airbags cylindriques (122) connectés les uns aux autres et de nombreux seconds airbags cylindriques (124) connectés les uns aux autres. Les premiers airbags cylindriques (122) et les seconds airbags cylindriques (124) sont debout sur la couche d'airbag stabilisant la pression (110) et disposés en réseau. La couche détectant la pression (130) est disposée entre la couche d'airbag stabilisant la pression (110) et la couche d'airbag égalisant la pression (120) de manière à détecter la pression que les nombreuses parties de la couche d'airbag égalisant la pression (120) supportent. L'invention inclut aussi un procédé de détection de capacité de poids utilisant le dispositif de coussin d'air.
PCT/CN2013/000529 2012-12-28 2013-05-06 Dispositif de coussin d'air et procédé de détection de capacité de poids WO2014101253A1 (fr)

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JP6557107B2 (ja) * 2015-09-30 2019-08-07 パラマウントベッド株式会社 エアマット装置及びエアセルの内圧制御方法

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CN113647936B (zh) * 2021-08-03 2022-07-22 南京伟思医疗科技股份有限公司 一种用于盆底磁刺激治疗设备的坐姿检测方法及检测系统

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