TWI715022B - Smart care mattress and method for detecting the physiological state of user - Google Patents

Abstract

The disclosure provides a smart care mattress and a method for detecting the physiological state of the user. The smart care mattress comprises a plurality of sensing units, wherein each sensing unit provides at least one sensing capacitance value. The method includes: obtaining a sensing capacitance value of each receiving electrode from each sensing unit; and detecting a physiological state of the user based on the sensing capacitance values of the receiving electrodes from the sensing units.

Description

Smart care mattress and method for detecting user's physiological state

The present invention relates to a mattress, and particularly relates to a smart care mattress and a method for detecting the physiological state of a user.

"Smart mattress" can measure sleeper breathing signals through non-contact physiological measurement technology, and provide related applications. The smart mattress can also use soft pressure sensing technology to capture the movement posture of the torso as sleep quality information and a warning of falling out of bed. In this way, suggestions for healthy sleep aid programs can be provided to facilitate the user's self-sleep management.

In the prior art, methods for detecting sleep data of a user generally include Ultra Wideband (UWB), Force-Sensitive Resistor, and fiber sensing. However, the above-mentioned prior art is difficult to achieve accurate user posture judgment, or the cost is too high, which is not conducive to home or mobile use. Therefore, it is necessary to design a smart mattress that is low-cost, convenient, accurate and not too large.

In view of this, the present invention provides a smart care mattress and a method for detecting the physiological state of the user, which can be used to solve the above technical problems.

The invention provides a smart care mattress, which includes a bearing part, a base, a plurality of sensing units and a processor. The carrying part is used for carrying a user. The base is arranged under the carrying part. The sensing unit is individually arranged between the carrying part and the base. Each sensing unit includes: a polyhedron, a groove, and at least one first elastic member. The polyhedron has a top surface, a bottom surface and at least one inclined surface, wherein the area of the top surface is larger than the area of the bottom surface, at least one inclined surface is connected between the top surface and the bottom surface, the top surface pushes against the carrying part, and each inclined surface is provided with a transmission electrode. The grooves correspond to the polyhedron and are provided on the base, and have at least one groove slope corresponding to at least one slope. Each groove slope is provided with at least one receiving electrode corresponding to the transmitting electrode. Each receiving electrode is coupled to the processor and corresponds to A contact condition with the transmission electrode provides an inductive capacitance value. At least one first elastic element is individually disposed between the bases of the supporting portion, and deformed in response to a pressure applied to the supporting portion, so that the polyhedron moves toward the groove. The processor is coupled to each receiving electrode of each sensing unit, and detects a physiological state of the user based on the sensing capacitance value of each receiving electrode from each sensing unit.

The present invention provides a method for detecting the physiological state of a user, which is suitable for a smart care mattress including a plurality of sensing units, wherein each sensing unit provides at least one sensing capacitance value, and the method includes: obtaining data from each sensing unit The sensing capacitance value of each receiving electrode of the unit; and detecting a physiological state of the user based on the sensing capacitance value of each receiving electrode from each sensing unit.

Based on the above, the smart care mattress proposed in the present invention can be provided with a sensing unit with a special structure, and the smart care mattress can be based on the sensing between the transmitting electrode on the polyhedron of the sensing unit and the receiving electrode on the slope of the groove Under the circumstances, the sensing capacitance value of each receiving electrode is obtained. After that, the processor can detect the physiological state of the user accordingly. In this way, the smart care mattress of the present invention can provide a low-cost, convenient, accurate, and not too bulky physiological state detection solution.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail in conjunction with the accompanying drawings.

100: Smart care mattress

110: Bearing Department

120: base

130: Multiple sensing units

131: Polyhedron

131a: Top surface

131b: bottom surface

131W, 131S, 131N, 131E: inclined plane

133: Groove

133a: bottom of groove

133E, 133W: groove slope

135: The first elastic part

137: second elastic part

140: processor

199: User

199a: thoracic area

410: sensing unit array

411, 412, 413, 511, 512, 521, 522, 612, 622: capacitance value distribution diagram

513, 523: Difference block

611, 621: Center of gravity line

811, 821: prone position

812, 822: perspective diagram

R1E, R2E, R3E, R1W, R2W, R3W, R1S, R2S, R3S, R1N, R2N, R3N: receiving electrode

TE, TS: Transmission electrode

W, S, N, E: direction

_{T1, T2, T3, T i} , T i + 1: Time point

M0, M1, M2: context

A, B, C, D, E, F, G: line

R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16, R17, R18: column

S910, S920: steps

Fig. 1 is a schematic diagram of a smart care mattress according to an embodiment of the present invention.

FIG. 2A is based on the sensing capacitance values provided by the receiving electrodes at different time points shown in FIG. 1.

FIG. 2B shows the movement situation of the sensing unit at different time points according to FIG. 2B.

FIG. 3A is a schematic diagram of a tilted state of the sensing unit depicted in FIG. 1.

FIG. 3B is a schematic diagram of applying pressure to the sensing unit according to several shown in FIG. 3A.

FIG. 3C is based on the inductive capacitance values provided by the receiving electrodes shown in FIG. 3B under different inclination conditions.

FIG. 4A is a smart photo carrying a user according to an embodiment of the present invention Top view of the mattress.

FIG. 4B is a diagram showing the distribution of capacitance values of the sensing element array at different time points according to FIG. 4A.

FIG. 5 is a schematic diagram of finding difference blocks according to an embodiment of the present invention.

Fig. 6 is a top view of a smart care mattress carrying a user and a corresponding capacitance value distribution diagram shown in Fig. 4A.

FIG. 7 is a schematic diagram of obtaining the inclination of each sensing unit according to FIG. 6.

FIG. 8 is a schematic diagram of detecting a lying position according to an embodiment of the present invention.

FIG. 9 is a method for detecting the physiological state of a user according to an embodiment of the present invention.

Please refer to FIG. 1, which is a schematic diagram of a smart care mattress according to an embodiment of the present invention. In this embodiment, the smart care mattress 100 is, for example, an independent tube mattress, which can be used for the user 199 to lie down and can detect the physiological state of the user 199 accordingly, but the invention is not limited to this.

As shown in FIG. 1, the smart care mattress 100 includes a supporting part 110, a base 120, a plurality of sensing units 130 and a processor 140. The carrying part 110 is used to carry the user 199. The base 120 is disposed under the carrying part 110.

In this embodiment, the structure of each sensing unit 130 is substantially the same, and can be individually disposed between the carrying portion 110 and the base 120. In Figure 1, each sensing unit 130 may include a polyhedron 131, a groove 133 and a first elastic member 135. The polyhedron 131 may have a top surface 131a, a bottom surface 131b, and inclined surfaces 131W, 131S, 131N, and 131E. The area of the top surface 131a is larger than the area of the bottom surface 131b, and the inclined surfaces 131W, 131S, 131N, and 131E are connected between the top surface 131a and the bottom surface 131b. The top surface 131a pushes against the carrying portion 110.

As shown in FIG. 1, the top surface 131a and the bottom surface 131b can be quadrilateral, and can be connected to each other through four inclined surfaces 131W, 131S, 131E, and 131N. The inclined surface 131W may be adjacent to the inclined surface 131S, and the inclined surface 131S and the inclined surface 131N may be respectively connected between the inclined surfaces 131W, 131E, the top surface 131a and the bottom surface 131b. In addition, the inclined surface 131S may be opposite to the inclined surface 131N, and the inclined surface 131W may be opposite to the inclined surface 131E.

However, in other embodiments, the polyhedron 131 can also be implemented in other aspects, and is not limited to the aspect shown in FIG. 1. For example, the top surface 131a and the bottom surface 131b of the polyhedron 131 can also be implemented as a circle, an ellipse, a triangle, a pentagon or other geometric shapes, and can be connected to each other through a corresponding number of surfaces. For example, assuming that the top surface 131a and the bottom surface 131b of the polyhedron 131 are implemented as triangles, they can be connected to each other through three inclined surfaces. For another example, assuming that the top surface 131a and the bottom surface 131b of the polyhedron 131 are circular, they can be connected to each other through a single annular slope, but the invention is not limited to this.

In order to facilitate the understanding of the concept of the present invention, the following will take the aspect of polyhedron 131 shown in FIG. 1 as an example, and general knowledge in the field should be able to deduce the correlation when the polyhedron 131 is implemented as the other aspects mentioned above. detail.

In this embodiment, the slopes 131W, 131S, 131N, and 131E can be divided into Do not correspond to the directions W, S, N and E, and can be individually provided with transmission electrodes. Taking the inclined surface 131E facing the E direction as an example, it can be provided with a transmission electrode TE; and taking the inclined surface 131S facing the S direction as an example, it can be provided with a transmission electrode TS. In addition, the inclined surfaces 131W and 131N are respectively provided with transmission electrodes, but they are not shown due to the viewing angle of FIG. 1.

As shown in FIG. 1, the groove 133 is disposed on the base 120 corresponding to the polyhedron 131. Specifically, the position of the groove 133 may be located below the polyhedron 131, and the shape and size of the groove 133 may be substantially the same or slightly larger than the polyhedron 131. For example, from the side cross-sectional view of the polyhedron 131 shown in FIG. 1, it can be seen that the side cross-section of the polyhedron 131 is an inverted trapezoid. Correspondingly, the side profile of the groove 133 may also be an inverted trapezoid. In this case, when the bearing portion 110 is pressed to drive the polyhedron 131 to move downward, the polyhedron 131 can enter the groove 133 accordingly, or even be completely contained in the groove 133, but the invention is not limited to this.

In this embodiment, the groove 133 may have groove slopes corresponding to the slopes 131W, 131S, 131N, 131E, and each groove slope is provided with a receiving electrode corresponding to the transmission electrode. In addition, each receiving electrode on the slope of each groove is coupled to the processor 140, and provides an inductive capacitance value in response to the contact with the transmitting electrode on each slope.

For example, the groove 133 may have groove slopes 133E and 133W corresponding to the slopes 131E and 131W, respectively. The groove slope 133E can be provided with receiving electrodes R1E, R2E, and R3E coupled to the processor 140 from top to bottom, and it can correspond to the transmission electrode TE provided on the slope 131E. In one embodiment, when the inclined surface 131E approaches the receiving electrodes R1E, R2E, and R3E as the polyhedron 131 moves, the The electrodes R1E, R2E, and R3E can provide different sensing capacitance values according to the sensing area of the transmitting electrode TE. In the following embodiments, it is assumed that the sensing capacitance values provided by the receiving electrodes R1E, R2E, and R3E can be positively correlated with the sensing area of the transmitting electrode TE, but the invention is not limited to this.

In one embodiment, if the polyhedron 131 moves downward for a distance vertically, the sensing area of the receiving electrodes R1E, R2E, and R3E and the transmitting electrode TE will increase accordingly. However, since the receiving electrodes R1E, R2E, and R3E are arranged on the groove slope 133E from top to bottom, the sensing area of the receiving electrodes R1E, R2E, and R3E and the transmitting electrode TE will show a decreasing trend. In this case, the sensing capacitance values provided to the processor 140 by the receiving electrodes R1E, R2E, and R3E will also show a decreasing trend accordingly.

Similar to the groove slope 133E, the groove slope 133W can also be provided with receiving electrodes R1W, R2W, and R3W coupled to the processor 140 from top to bottom, and it can correspond to the transmitting electrode (not shown) provided on the slope 131W ). Based on the principle taught in the above embodiment, when the polyhedron 131 moves vertically downward, the sensing capacitance values provided to the processor 140 by the receiving electrodes R1W, R2W, and R3W will also show a decreasing trend accordingly.

In addition, although not specifically shown in FIG. 1, the groove 133 may further have groove slopes corresponding to the slopes 131N and 131S, and the aforementioned groove slopes can be connected between the groove slopes 133W and 133E, and can be opposite to each other Set up.

In one embodiment, the first elastic member 135 (for example, a spring) may be separately disposed between the supporting portion 110 and the base 120, and responds to the force applied to the supporting portion 110 A pressure (for example, pressure from the user 199) deforms, so that the polyhedron 131 moves toward the groove 133. In addition, when the first elastic member 135 is completely deformed in response to the aforementioned pressure, the polyhedron 131 can be accommodated in the groove 133 accordingly, but it is not limited thereto. In addition, when the aforementioned pressure disappears, the first elastic member 135 can provide a restoring force to prop up the bearing portion 110 upward, thereby driving the polyhedron 131 away from the groove 133 until it returns to the initial position shown in FIG. 1.

In addition, as shown in FIG. 1, the groove 133 may further include a groove bottom surface 133 a connected to the inclined surface of each groove. Moreover, the groove 133 may further include a second elastic member 137 (for example, a spring) disposed on the bottom surface 133a of the groove. In an embodiment, one end of the second elastic member 137 may be disposed on the bottom surface 133a of the groove, and the second elastic member 137 may be separated from the bottom surface 131b of the polyhedron 131 by a predetermined distance. Therefore, when the polyhedron 131 moves toward the groove 133 beyond the predetermined distance, the bottom surface 131 b of the polyhedron 131 can push against the second elastic member 137 to compress the second elastic member 137. In this way, the sensing unit 130 can simultaneously provide a relatively large supporting force to the supporting portion 110 through the first elastic member 135 and the second elastic member 137.

In an embodiment, the coefficient of elasticity of the second elastic element 137 may be greater than the coefficient of elasticity of each of the first elastic elements 135. In this way, when a user 199 with a lighter weight is lying on the supporting portion 110, but the polyhedron 131 is not moved downward beyond the above-mentioned preset distance, the sensing unit 130 can provide sufficient information through the first elastic member 135. Support the support force of the user 199. On the other hand, when a user 199 with a heavier weight lies on the carrying portion 110 and moves the polyhedron 131 downward beyond the predetermined distance, the sensing unit 130 can pass through the first elastic member 135 and the second elastic member 137 Collaboration The supporting force is sufficient to support the user 199, but the present invention may not be limited thereto.

In this embodiment, the processor 140 may be coupled to each receiving electrode of each sensing unit 130, and detect the physiological state of the user 199 based on the sensing capacitance value of each receiving electrode from each sensing unit 130. In different embodiments, the aforementioned physiological state may include the breathing cycle and prone position of the user 199, but the present invention may not be limited thereto.

In an embodiment, for a single sensing unit 130, the processor 140 can detect the movement of the sensing unit 130 (the polyhedron 131) based on the change of the sensing capacitance value of each receiving electrode at different time points. .

Please refer to FIG. 2A and FIG. 2B, where FIG. 2A is based on the sensing capacitance values provided by the receiving electrodes in FIG. 1 at different time points, and FIG. 2B is based on the sensing unit illustrated in FIG. 2B at different time points. Mobile situation. In this embodiment, it is assumed that: (1) the bearing portion 110 bears a vertical downward pressure PR; (2) the groove slope corresponding to the slope 131S is provided with receiving electrodes R1S, R2S, R3S from top to bottom; 3) The groove slope corresponding to the slope 131N is provided with receiving electrodes R1N, R2N, R3N from top to bottom.

In this embodiment, since the pressure PR is assumed to be applied to the supporting portion 110 vertically downward, the operation mode of the receiving electrodes on the slopes of the grooves is substantially the same. Therefore, the following description will only be based on the operation modes of the receiving electrodes R1E, R2E, and R3E on the groove slope 133E, and those skilled in the art should be able to deduce the operation modes of the receiving electrodes on other groove slopes accordingly.

It can be seen from FIG. 2B that at the time points T1, T2, and T3, the polyhedron 131 has moved toward the groove 133 in response to the pressure PR, and correspondingly drives the transfer electrode The TE (which is provided on the slope 131E corresponding to the groove slope 133E) gradually approaches the receiving electrodes R1E, R2E, and R3E. In this case, the sensing area 210 between the receiving electrodes R1E, R2E, and R3E and the transmitting electrode TE will gradually increase accordingly. Correspondingly, the sensing capacitance value provided by each receiving electrode R1E, R2E, and R3E will also increase as the sensing area 210 increases, as shown in FIG. 2A. In addition, as mentioned in the previous embodiment, since the polyhedron 131 moves vertically downward, the sensing capacitance values provided by the receiving electrodes R1E, R2E, and R3E respectively show a decreasing trend at any point in time.

Therefore, when the processor 140 determines that the sensing capacitance value provided by each receiving electrode of the sensing unit 130 roughly presents the state shown in FIG. 2A, it can be known that the sensing unit 130 moves vertically downward, but the present invention is not limited to this.

Please refer to FIG. 3A, which is a schematic diagram of a tilted state of the sensing unit shown in FIG. 1. In this embodiment, because the pressure applied to the sensing unit 130 may cause the sensing unit 130 to tilt left/right as shown, the present invention also proposes corresponding technical means to perform corresponding detection. described as follows.

Please refer to FIG. 3B and FIG. 3C, where FIG. 3B is a schematic diagram of applying pressure to the sensing unit according to the several diagrams depicted in FIG. 3A, and FIG. 3C is based on the receiving electrodes depicted in FIG. 3B under different inclination conditions. Sensing capacitance value.

FIG. 3B shows three possible scenarios, namely scenarios M0, M1, and M2. The sensing unit 130 in the scenario M0 is not tilted at all, and the sensing unit 130 in the scenario M1 is tilted in the direction W under force. , And the sensing unit 130 in the context M2 experiences a force and tilts in a direction between the directions W and S. In this situation Below, the sensing capacitance values of the receiving electrodes in the sensing unit 130 may all be equal, but the invention is not limited to this.

It can be seen from the trend of the sensing capacitance value corresponding to the scenario M1 in FIG. 3C that if only the sensing capacitance values of the receiving electrodes R1W, R2W, and R3W arranged on the groove slope 133W show a sequential increasing trend, the processor 140 It can be determined that (the polyhedron 131 of the sensing unit 130) is inclined toward the direction W corresponding to the inclined surface 131W. From another point of view, if only the sensing capacitance values of the receiving electrodes R1E, R2E, and R3E provided on the groove slope 133E (which are relative to the groove slope 133W) show a decreasing trend in order, the processor 140 can It is determined that (the polyhedron 131 of the sensing unit 130) is inclined toward the direction W corresponding to the inclined surface 131W (which corresponds to the groove inclined surface 133W).

In addition, since the sensing unit 130 in the context M1 is not inclined toward the direction N or S, the sensing capacitance values of the receiving electrodes R1N, R2N, and R2N arranged on the groove slope 133N can be equal, and the receiving electrodes arranged on the groove slope 133S The sensing capacitance values of the electrodes R1S, R2S, and R2S can also be equal.

In addition, it can be seen from the trend of the sensing capacitance value corresponding to the situation M2 in FIG. 3C that if the sensing capacitance values of the receiving electrodes R1W, R2W, and R3W arranged on the inclined surface of the groove 133W show a sequential increasing trend, The respective sensing capacitance values of the receiving electrodes R1S, R2S, and R2S of the groove slope 133S also show a trend of increasing sequentially, and the processor 140 can determine that the sensing unit 130 (the polyhedron 131) faces the direction W (which corresponds to the slope 131W ) And the direction S (which corresponds to the inclined surface 131S) is inclined. From another point of view, if the receiving electrodes R1E, R2E, and R3E are arranged on the groove slope 133E (which is opposite to the groove slope 133W), the individual feel The corresponding capacitance values show a decreasing trend in sequence, and the respective sensing capacitance values of the receiving electrodes R1N, R2N, and R3N arranged on the groove slope 133N (which is relative to the groove slope 133N) also show a decreasing trend in sequence, the processor 140 can determine that (the polyhedron 131 of the sensing unit 130) is inclined toward the direction between the direction W (which is opposite to the direction E) and the direction S (which is opposite to the direction N).

It can be seen from the above that the processor 140 can know the tilt of the sensing unit 130 based on the sensing capacitance value of each receiving electrode in the sensing unit 130, but the present invention is not limited to this.

As mentioned in the previous embodiment, the processor 140 can detect the breathing cycle of the user 199 based on the sensing capacitance value of each receiving electrode in the sensing unit 130, which will be further described below.

Roughly speaking, since the chest area of the user 199 may shrink/expand accordingly with the exhalation/inhalation action, when the user 199 lies on the smart care mattress 100, the area below the chest area The sensing capacitance values measured by the receiving electrodes on one or more sensing units may change periodically, and the processor 140 can estimate the breathing cycle of the user 199 based on the periodic change.

In an embodiment, the processor 140 may generate a specific sensing capacitance value of each sensing unit 130 according to the sensing capacitance value of each receiving electrode of each sensing unit 130, and based on the specific sensing capacitance value of each sensing unit 130 being different The changing situation at the time point defines the breathing cycle of the user 199.

Please refer to FIG. 4A, which is a top view of a smart care mattress carrying a user according to an embodiment of the present invention. In this embodiment, the smart care mattress 100 It may include a plurality of sensing units arranged as a sensing unit array 410, and each sensing unit may be represented as a rectangular grid in FIG. 4A, but the present invention may not be limited thereto. As shown in FIG. 4A, the sensing unit array 410 may have rows A, B, C, D, E, F, G, and columns R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11 , R12, R13, R14, R15, R16, R17 and R18, but the present invention may not be limited thereto.

As shown in FIG. 4A, the user 199 in this embodiment can lie on the sensing unit array 410, and the thoracic region 199a of the user 199 can expand/contract with breathing.

Please refer to FIG. 4B, which is based on the capacitance distribution diagram of the sensing element array at different time points shown in FIG. 4A. In this embodiment, it is assumed that the smart care mattress 100 does not carry any objects at time T1. In this case, the processor 140 can generate the specific sensing capacitance value of each sensing unit 130 according to the sensing capacitance value of each receiving electrode of each sensing unit 130. In different embodiments, the processor 140 may calculate the specific sensing capacitance value of each sensing unit based on a method set by the designer. For example, the processor 140 may only consider the total sensing capacitance value provided by each receiving electrode on the slope of a single groove as the specific sensing capacitance value. For another example, the processor 140 may add the sensing capacitance of each receiving electrode in a certain sensing unit 130 to the specific sensing capacitance value of the sensing unit 130. For another example, the processor 140 may also multiply the sensing capacitance of each receiving electrode in a certain sensing unit 130 by the corresponding weight and then add the specific sensing capacitance value of the sensing unit 130, but the present invention may not Limited to this.

After obtaining the specific sensing capacitance value of each sensing unit 130 at the time point T1, the processor 140 may accordingly generate a capacitance value score corresponding to the sensing unit matrix 410 Layout 411. It can be seen from the capacitance value distribution map 411 that since there are no objects on the smart care mattress 100, the specific sensing capacitance values of the sensing units 130 can all be equal.

Next, at time T2, suppose that the smart care mattress 100 carries a user 199, and the user 199 is inhaling, so the thoracic region 199a is correspondingly expanded. At this time, the processor 140 can obtain the specific sensing capacitance value of each sensing unit 130 at the time point T2 based on the method taught in the above embodiment, and generate a capacitance value distribution map 412 corresponding to the sensing unit matrix 410 accordingly. It can be seen from the capacitance value distribution map 412 that, because the thoracic region 199a is expanding, some of the sensing units detect a higher specific sensing capacitance value.

Then, at time T3, suppose that the smart care mattress 100 carries a user 199, and the user 199 is exhaling, so the thoracic region 199a is correspondingly contracted. At this time, the processor 140 can obtain the specific sensing capacitance value of each sensing unit 130 at the time point T3 based on the method taught in the above embodiment, and accordingly generate the capacitance value distribution map 413 corresponding to the sensing unit matrix 410. It can be seen from the capacitance value distribution map 413 that, because the thoracic region 199a is contracted, the specific sensing capacitance value of a part of the sensing units decreases relative to the capacitance value distribution map 412.

Since the body area of the user 199 other than the thoracic area 199a does not change with breathing, the difference between the capacitance distribution maps 412 and 413 corresponds to the thoracic area 199a, and the capacitance of the aforementioned difference area The value change can be used to define the breathing cycle of the user 199. Specifically, the processor 140 may monitor and record the specific sensing capacitance value of each sensing unit in the difference block at each time point.

After that, the processor 140 can find the time point when the specific sensing capacitance value of the sensing unit in the difference block appears the maximum value and the time point when the minimum value appears, and define the time difference between these two time points as the user 199 breathing cycle, but the present invention may not be limited to this.

Please refer to FIG. 5, which is a schematic diagram of finding different blocks according to an embodiment of the present invention. In the present embodiment, it is assumed processor 140 at the time point T _i and T _{i + 1} according to the above teachings and individually identify the capacitance value distribution 511 and 512. In this case, the processor 140 can perform the Bollinger operation based on the capacitance value map 511 and 512 to find the difference block 513. After that, the processor 140 can define the breathing cycle of the user 199 according to the change in the capacitance value in the difference block 513, and the relevant details are not described herein.

Further, processor 140 is assumed at the time point T _i and T _{i + 1} according to the above teachings and individually identify the capacitance value distribution 521 and 522. In this case, the processor 140 can perform a Bollinger operation based on the capacitance value map 521 and 522 to find the difference block 523. After that, the processor 140 can define the breathing cycle of the user 199 according to the capacitance change in the difference block 523.

In an embodiment, the processor 140 may generate a specific sensing capacitance value of each sensing unit 130 according to the sensing capacitance value of each receiving electrode of each sensing unit 130, and based on the specific sensing capacitance value of each sensing unit 130 being different The changing situation at the time point defines the prone position of the user 199.

Please refer to FIG. 6, which is a top view of the smart care mattress carrying the user and the corresponding capacitance value distribution diagram shown in FIG. 4A. In this embodiment, for the details of the sensing unit array 410, please refer to the related description in FIG. 4A, which will not be repeated here.

As shown in FIG. 6, assuming that the user 199 lies supine on the sensing unit array 410 at time T1, the processor 140 can generate a capacitance value distribution map 612 according to the specific sensing capacitance value of each sensing unit 130. After that, the processor 140 can find the center of gravity 611 of the user 199 according to the specific sensing capacitance value of each sensing unit 130. For example, the processor 140 may find one or more sensing units carrying the user 199 in each row, and find the positions of the center of gravity of these sensing units row by row. In this embodiment, assuming that the positions of the centers of gravity found in each column are located between rows C and D, the processor 140 can connect the positions of the centers of gravity of each column to form a center of gravity line 611, but the invention is not limited to this. After obtaining the center of gravity line 611, the processor 140 can define the prone position of the user 199 accordingly. For example, if the center of gravity line 611 is a straight line, the processor 140 may infer that the user 199's prone position may be upright, and if the center of gravity line 611 is a curve (for example, an S-shaped curve), the processor 140 may infer that the user The lying position of 199 may be side lying, but the present invention is not limited to this.

After that, assuming that the user 199 turns over to his left side at time T2 and changes to lying on the sensing unit array 410 on his side, the processor 140 may generate a capacitance value distribution map 622 according to the specific sensing capacitance value of each sensing unit 130. After that, the processor 140 can find the center of gravity line 621 of the user 199 according to the specific sensing capacitance value of each sensing unit 130. For ease of understanding, in this embodiment, it is assumed that the center of gravity positions found in each column are located in the middle of rows E and F, and the processor 140 may connect the center of gravity positions of each column to form a center of gravity line 621, but the invention is not limited to this.

In this embodiment, since the center of gravity line 611 is different from the center of gravity line 621, the processor 140 can determine that the lying posture of the user 199 has changed. Specifically, due to the center of gravity The line 621 is located on the left side of the center of gravity line 611, so the processor 140 may determine, for example, that the user 199 has turned over/moved to his left side, but it is not limited to this.

In other embodiments, since the user 199 may change the prone position while lying in the same group of sensing units, the present invention also proposes a technical method that takes the tilt of each sensing unit into consideration, with a view to Determine the user's prone position more accurately.

Please refer to FIG. 7, which is a schematic diagram of obtaining the tilt of each sensing unit according to FIG. 6. In this embodiment, for the sensor units carrying the user 199 in the sensor unit array 410, the processor 140 can individually obtain the inclination of these sensor units based on the mechanism taught in the previous embodiment, and the details can be Refer to the description in the previous embodiment, which will not be repeated here.

For ease of description, it is assumed in this embodiment that the sensing units carrying the user 199 are inclined toward the direction of the center of gravity of the user 199. For example, at the time point T1, the sensing units (shown by hatching) carrying the user 199 are all inclined toward the center of gravity line 611, and the inclination direction of each sensing unit is indicated by the arrow therein, but the present invention is not limited to this. For another example, at the time point T2, the sensing units (shown by hatching) carrying the user 199 are all inclined toward the center of gravity line 621, and the inclination direction of each sensing unit is indicated by the arrow therein, but the present invention It is not limited to this.

Please refer to FIG. 8, which is a schematic diagram of detecting a prone position according to an embodiment of the present invention. In this embodiment, it is assumed that the user 199 is lying on the smart care mattress 100 in prone positions 811 and 821 at different time points, and the prone positions 811 and 821 are tied to the sensing unit array of the smart care mattress 100. Carried by the same group of sensing units Load. In this case, if only the methods shown in FIGS. 4A to 6 are used to detect the lying position of the user 199, since the lying positions 811 and 821 may correspond to the same center of gravity line, the processor 140 will not be able to correctly determine The difference between prone position 811 and 821.

However, if the method of FIG. 7 is used to further consider the inclination of the above-mentioned sensing units, the prone position 811 and 821 can be correctly distinguished. Specifically, from the schematic diagrams 812 and 822 of the prone positions 811 and 821 from another perspective, it can be seen that although the prone positions 811 and 821 are carried by the same sensing unit, the prone positions 811 and 821 cause each sensing unit The tilt situation will be different.

Taking the row R5 of the sensing unit array 410 as an example, when it is used to carry the user 199 in the prone position 811 at the time point T1, the tilt directions of the sensing units corresponding to rows A to F can be as shown in FIG. 8 . That is, the sensing units corresponding to rows A to E on the column R5 can be tilted toward the lower right, and the sensing units corresponding to the row F can tilt toward the lower left, for example.

On the other hand, when the column R5 is used to carry the user 199 in the prone position 821 at the time point T2, the inclination directions of the sensing units corresponding to the rows A to F can be as shown in FIG. 8. That is, the sensing units corresponding to rows A to D on the column R5 can be tilted toward the lower right, and the sensing units corresponding to rows E and F can be tilted toward the lower left, for example.

In this case, since the inclination of the sensing unit measured at time T1 is different from the inclination of the sensing unit measured at time T2, the processor 140 can determine that the user 199's prone posture has been change.

Please refer to FIG. 9, which is a method for detecting the physiological state of a user according to an embodiment of the present invention. The method of this embodiment can be performed by the smart care mattress of Figure 1 Row. First, in step S910, the processor 140 may obtain the sensing capacitance value of each receiving electrode of each sensing unit. Then, in step S920, the processor 140 may detect the physiological state of the user 199 based on the sensing capacitance value of each receiving electrode from each sensing unit. The details of steps S910 and S920 can be referred to the descriptions in the previous embodiments, and will not be described again here.

In addition, relevant professionals can also set up an alarm system according to needs, so as to provide corresponding treatment when the detected physiological state is abnormal. For example, when the user’s breathing pattern/cycle satisfies a characteristic condition (such as apnea, too slow, too fast, waking up, etc.), the responder is notified immediately, or the child turns over to conform to the state of sleeping on his stomach or shows that there is a fall when touching the edge of the bed Alert immediately when it is in danger. In addition, relevant personnel can immediately access the image capture device installed near the smart care mattress through the Internet to obtain related photos, and then know the status of the user lying on the smart care mattress.

In summary, the smart care mattress proposed in the present invention can be provided with a sensing unit with a special structure, and the smart care mattress can be based on the sensing unit between the transmission electrode on the polyhedron and the receiving electrode on the slope of the groove. To obtain the sensing capacitance value of each receiving electrode. After that, the processor can correspondingly detect the movement of each sensing unit (such as tilting, moving down, etc.), and can further detect the physiological state of the user (such as breathing cycle and prone position) based on the proposed method. . In this way, the smart care mattress of the present invention can provide a low-cost, convenient, accurate, and not too bulky physiological state detection solution.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the relevant technical field will not depart from the present invention. Within the spirit and scope, some changes and modifications can be made, so the scope of protection of the present invention shall be subject to those defined by the attached patent scope.

100: Smart Care Mattress 110: Bearing Department 120: Base 130: Multiple sensing units 131: Polyhedron 131a: Top surface 131b: bottom surface 131W, 131S, 131N, 131E: inclined plane 133: Groove 133a: bottom surface of groove 133E, 133W: groove slope 135: The first elastic part 137: The second elastic part 140: Processor 199: User R1E, R2E, R3E, R1W, R2W, R3W: receiving electrode TE, TS: Transmission electrode W, S, N, E: direction

Claims (14)

A smart care mattress, including: A carrying part for carrying a user; A base, which is arranged under the carrying part; A plurality of sensing units are individually arranged between the carrying portion and the base, and each of the sensing units includes: A polyhedron having a top surface, a bottom surface and at least one inclined surface, wherein the area of the top surface is greater than the area of the bottom surface, the at least one inclined surface is connected between the top surface and the bottom surface, and the top surface pushes against the load bearing Section, and each inclined surface is provided with a transmission electrode; A groove corresponding to the polyhedron is provided on the base, and has at least one groove slope corresponding to the at least one slope, each groove slope is provided with at least one receiving electrode corresponding to the transmitting electrode, and each receiving electrode The electrode is coupled to the processor and provides an inductive capacitance value in response to a contact condition with the transmission electrode; At least one first elastic member, which is individually disposed between the supporting portion and the base, and deforms in response to a pressure applied to the supporting portion, so that the polyhedron moves toward the groove; and A processor is coupled to each of the receiving electrodes of each of the sensing units, and detects a physiological state of the user based on the sensing capacitance value of each of the receiving electrodes from each of the sensing units. According to the smart care mattress of claim 1, wherein the groove of each sensing unit further includes a groove bottom surface connected to the at least one groove slope, and each sensing unit further includes: A second elastic member disposed on the bottom surface of the groove, wherein when the polyhedron moves toward the groove more than a predetermined distance, the bottom surface of the polyhedron pushes against the second elastic member to compress the second elastic member , And the elastic coefficient of the second elastic element is greater than the elastic coefficient of each of the first elastic elements. As described in the first item of the patent application, the side section of the polyhedron and the side section of the groove of each of the sensing units are both inverted trapezoids. For the smart care mattress described in claim 1, wherein the at least one slope includes a first slope and a second slope that are adjacent to each other, and the at least one groove slope includes each corresponding to the first slope and the A first groove slope and a second groove slope of the second slope. The first groove slope and the second groove slope are respectively provided with a first receiving electrode, a second receiving electrode and a second receiving electrode from top to bottom. The third receiving electrode. The smart care mattress according to claim 4, wherein the first receiving electrode, the second receiving electrode, and the third receiving electrode provided on the slope of the first groove respectively provide the sensing capacitor The value is positively correlated with the sensing area between the transmitting electrode arranged on the first inclined surface, and the first receiving electrode, the second receiving electrode and the third receiving electrode arranged on the inclined surface of the two grooves The individually provided sensing capacitance value is positively correlated with the sensing area between the transmitting electrode disposed on the second inclined surface. The smart care mattress according to item 5 of the scope of patent application, wherein if only the first receiving electrode, the second receiving electrode and the third receiving electrode are arranged on the slope of the first groove, the sensing capacitor The values increase sequentially, and the processor determines that the polyhedron is inclined toward a first direction corresponding to the first inclined plane; If only the sensing capacitance values of the first receiving electrode, the second receiving electrode, and the third receiving electrode disposed on the slope of the second groove increase sequentially, the processor determines that the orientation of the polyhedron corresponds to the A second direction of the second inclined surface is inclined; Wherein, if the sensing capacitance values of the first receiving electrode, the second receiving electrode, and the third receiving electrode arranged on the slope of the first groove increase sequentially, and the first receiving electrode is arranged on the slope of the second groove The sensing capacitance values of a receiving electrode, the second receiving electrode, and the third receiving electrode also increase sequentially, and the processor determines that the polyhedron faces a first direction between the first direction and the second direction. Tilt in three directions. The smart care mattress according to the fifth item of the scope of patent application, wherein if the first receiving electrode, the second receiving electrode and the third receiving electrode are arranged on the slope of the first groove, the respective sensing capacitance values are all Are equal, and the respective sensing capacitance values of the first receiving electrode, the second receiving electrode, and the third receiving electrode disposed on the slope of the second groove are also equal, the processor determines that the polyhedron is not inclined. The smart care mattress according to item 4 of the scope of patent application, wherein the at least one inclined surface further includes a third inclined surface and a fourth inclined surface; The second inclined surface and the fourth inclined surface are respectively connected between the first inclined surface, the third inclined surface, the top surface and the bottom surface, and the second inclined surface is opposite to the fourth inclined surface; The at least one groove slope further includes a third groove slope and a fourth groove slope; The second groove slope and the fourth groove slope are respectively connected between the first groove slope and the third groove slope, and the second groove slope is opposite to the fourth groove slope; The second inclined surface, the third inclined surface and the fourth inclined surface respectively correspond to the second inclined surface, the third inclined surface and the fourth inclined surface. In the smart care mattress according to claim 1, wherein the sensing units are arranged in a matrix of sensing units, and the processor is configured to: Generating a specific sensing capacitance value of each sensing unit according to the sensing capacitance value of each receiving electrode of each sensing unit; and The physiological state of the user is defined based on a change situation of the specific sensing capacitance value of each sensing unit at different time points. The smart care mattress according to claim 9, wherein the physiological state includes a breathing cycle of the user, and the processor is configured to: Generating a first capacitance value distribution map corresponding to the sensing unit matrix according to the specific sensing capacitance value of each sensing unit at a first time point; Generating a second capacitance value distribution map corresponding to the sensing unit matrix according to the specific sensing capacitance value of each sensing unit at a second time point; Finding a difference block between the first capacitance value distribution map and the second capacitance value distribution map; Finding a third time point at which a maximum value of the specific sensing capacitance values of the sensing units located in the difference block occurs and a fourth time point at which a minimum value occurs; A time difference between the third time point and the fourth time point is defined as the breathing cycle of the user. The smart care mattress according to claim 9, wherein the sensing unit matrix includes multiple rows and multiple columns, the physiological state includes a lying position of the user, and the processor is configured to: Finding a first center of gravity line of the user according to the specific sensing capacitance value of the sensing units in each row at a first time point; The prone position of the user is defined based on the first center of gravity line. A method for detecting the physiological state of a user is suitable for the smart care mattress as described in item 1 of the scope of patent application, and the method includes: Obtaining the sensing capacitance value of each receiving electrode from each sensing unit; and A physiological state of the user is detected based on the sensing capacitance value of each of the receiving electrodes from each of the sensing units. The method described in claim 12, wherein the sensing units are arranged in a sensing unit matrix, and the use is detected based on the sensing capacitance value of each receiving electrode from each of the sensing units The steps of this physiological state of the person include: Generating a specific sensing capacitance value of each sensing unit according to the sensing capacitance value of each receiving electrode of each sensing unit; and The physiological state of the user is defined based on a change situation of the specific sensing capacitance value of each sensing unit at different time points. The method according to claim 13, wherein the sensing unit matrix includes a plurality of rows and a plurality of columns, the physiological state includes a prone position of the user, based on the specific sensing capacitance of each sensing unit The step of defining the physiological state of the user by the change of the value at different time points includes: Finding a first center of gravity position of the user on each row according to the specific sensing capacitance value of the sensing units located in each row at a first time point; Generating a first center of gravity line based on the user's first center of gravity position on each row; The prone position of the user is defined based on the first center of gravity line.

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