TWI498100B - Sensing pad of physiological electrical signal and sensing mattress of using the same - Google Patents

Description

Physiological electrical signal sensing pad and sensing mattress using the same

The present invention relates to a sensing pad, and more particularly to a physiological electrical sensing pad and a sensing mattress using the same.

In the case of the hospital of the hospital, the sensor can be monitored at any time. Many sensors are installed in the metropolitan area. For example, the "distal posture monitoring and care bed" disclosed in the Chinese Patent No. M433198, which uses the pressure sensing element to sense the foot of the bed. Under the pressure, when the patient moves or falls, the pressure sensing element can immediately react to the pressure changes of the foot of the bed to determine the movement of the patient.

However, the above-mentioned pressure sensing element can only be used to detect the movement of the patient, and cannot immediately sense the physiological condition of the patient, such as the breathing condition. Therefore, it is necessary to provide an innovative and progressive physiological electrical signal sensing pad and sensing mattress to solve the above problems.

The invention provides a physiological electrical signal sensing pad comprising a dielectric substrate, a plurality of electrode layers and at least one electrical connection line. The dielectric substrate is provided with a plurality of sensing blocks, each of the sensing blocks having a first surface and an opposite second surface. The electrode layers are respectively disposed on the first surface of each of the sensing blocks. The electrical connection wires are electrically connected to the electrode layers.

The invention further provides a sensing mattress comprising a pad body and a first physiological electrical signal sensing pad. The pad system has an upper surface and an opposite lower surface. The first physiological electrical signal sensing pad is disposed on the upper surface of the pad body, and includes a dielectric substrate, a plurality of electrode layers, and at least one electrical connection line. The dielectric substrate is provided with a plurality of sensing blocks, each of the sensing blocks having a first surface and an opposite second surface. The electrode layers are respectively disposed on the first surface of each of the sensing blocks. The electrical connection wires are electrically connected to the electrode layers.

When the human body lies on the physiological electrical signal sensing pad of the present invention, the portion of the human body that contacts the second surface of each of the sensing blocks forms a capacitive sensing unit with each of the sensing blocks and each of the electrode layers. That is, the human body is used as one of the electrodes of the capacitive sensing unit. The plurality of capacitive sensing units formed by the human body and the physiological electrical signal sensing pad can instantly sense changes in the physiological signals of the human body.

The physiological electrical signal sensing pad of the present invention can be combined with the cushion body to form a sensing mattress, and the sensing mattress can perform physiological electrical signal sensing on the human body lying thereon, and the sensing result can be used as a judgment person. Important reference basis.

The physiological electric signal sensing pad and the sensing mattress of the invention have the advantages of simple structure, easy manufacture and low cost, and can be applied to home care or long-term care of patients.

1 is a schematic view showing the structure of a physiological electrical signal sensing pad of the present invention. Figure 2 is a cross-sectional view showing the structure of the physiological electrical signal sensing pad taken along the line X-X of Figure 1. Referring to FIG. 1 and FIG. 2 , the physiological electrical signal sensing pad 10 includes a dielectric substrate 11 , a plurality of electrode layers 12 , and at least one electrical connection line 13 . The dielectric substrate 11 is provided with a plurality of sensing blocks 111, and the sensing blocks 111 are arranged in an array, and each of the sensing blocks 111 has a first surface 111a and a relative first Two surfaces 111b. The electrode layers 12 are respectively disposed on the first surface 111a of each of the sensing blocks 111. In this embodiment, the electrode layers 12 have the same geometrical dimensions. Alternatively, in another embodiment, the geometrical dimensions of the electrode layers 12 may be different. The electrical connection line 13 is electrically connected to the electrode layers 12.

Please refer to FIG. 3, which is a schematic diagram showing the human body lying on the physiological electrical signal sensing pad. In this embodiment, when the human body is lying on the physiological electrical signal sensing pad 10 of the present invention, the portion of the human body contacting the second surface 111b of each of the sensing blocks 111 is associated with each of the sensing blocks 111 and Each of the electrode layers 12 constitutes a capacitive sensing unit C, that is, the human body is used as one of the electrodes of the capacitive sensing unit C. The plurality of capacitive sensing units C formed by the human body and the physiological electrical signal sensing pad 10 can instantly sense changes in the physiological signals of the human body.

In this embodiment, the capacitance value of each of the capacitance sensing units C The calculation formula is C=ε×A/d, where ε refers to the dielectric constant of the dielectric substrate 11 and A refers to the area of the portion of the human body that contacts the second surface 111b of each of the sensing blocks 111, d Refers to the thickness of each of the sensing blocks 111 of the dielectric substrate 11.

When the human body contact area A changes, the capacitance value change ΔC of each of the capacitance sensing units C can be obtained by the following formula.

△C=ε×△A/d

When the weight of the human body is applied to each of the sensing blocks 111 to change its thickness d, the capacitance value change ΔC of each of the capacitance sensing units C can be obtained by the following formula.

△C=ε×A/△d

When the human body contact area A and the thickness d of each of the sensing blocks 111 are simultaneously changed, the capacitance value change ΔC of each of the capacitance sensing units C can be obtained by the following formula.

△C=ε×△A/△d

According to the above formulas, the physiological electrical signal changes when the human body changes dynamically can be calculated.

Fig. 4 is a view showing the structure of a sensing mattress according to a first embodiment of the present invention. Figure 5 shows the central processing unit, electrical connections and electrode layers The connection diagram. Referring to FIG. 4 and FIG. 5 , the sensing mattress M of the first embodiment of the present invention includes a pad body 20 and a first physiological electrical signal sensing pad 10 . The pad body 20 has an upper surface 20a and an opposite lower surface 20b. The first physiological electrical signal sensing pad 10 is disposed on the upper surface 20a of the pad body 20, and the first physiological electrical signal sensing pad 10 includes a dielectric substrate 11, a plurality of electrode layers 12, and at least An electrical connection line 13. The dielectric substrate 11 is provided with a plurality of sensing blocks 111, and the sensing blocks 111 are arranged in an array, and each of the sensing blocks 111 has a first surface 111a and a relative first Two surfaces 111b. The electrode layers 12 are respectively disposed on the first surface 111a of each of the sensing blocks 111. In this embodiment, the electrode layers 12 have the same geometrical dimensions. Alternatively, in another embodiment, the geometrical dimensions of the electrode layers 12 may be different. The electrical connection line 13 is electrically connected to the electrode layers 12.

Referring to FIG. 3, FIG. 4 and FIG. 5, when the human body lies on the sensing mattress M, the part of the human body contacting the second surface 111b of each sensing block 111 and each of the sensing blocks 111 and each of the electrode layers 12 form a capacitance sensing unit C. In this embodiment, in order to calculate the change of the capacitance value of the capacitance sensing unit C, the central processing unit 30 is electrically connected to the electrical connection lines 13 to form the capacitors by the electrical connection lines 13. The sensing unit C performs the calculation of the capacitance value change and the physiological electric signal analysis, and the analysis result (shown in FIG. 6) can be used as an important reference for judging the human condition.

Please refer to FIG. 7, which is a schematic structural view showing a sensing mattress according to a second embodiment of the present invention. The second embodiment differs from the first embodiment in that it further includes a dielectric fabric 40, a second physiological electrical signal sensing pad 50, and a bed frame 60. In the present embodiment, the dielectric fabric 40 is disposed on the first physiological electrical sensing pad 10 . Preferably, the dielectric fabric 40 is disposed on the first physiological electrical sensing pad 10 . The dielectric substrate 11 is added to increase the dielectric thickness of each of the sensing blocks 111. Further, the dielectric fabric 40 may be selected from the group consisting of a sheet and a cleaning pad. Alternatively, in another embodiment, the dielectric fabric 40 may also be disposed on the electrode layers 12 of the first physiological electrical sensing pad 10 as the other dielectric.

Referring to FIG. 7 , the pad body 20 is disposed on the bed frame 60 , and the second physiological electrical signal sensing pad 50 is disposed between the bed frame 60 and the pad body 20 . In this embodiment, the first physiological electrical signal sensing pad 10 and the second physiological electrical signal sensing pad 50 are simultaneously used to realize diversified analysis of the human physiological electrical signal. Preferably, the second physiological electronic signal The structure of the sensing pad 50 is the same as that of the first physiological electrical sensing pad 10.

The physiological electrical signal sensing pad 10 and the sensing mattress M of the invention have the advantages of simple structure, easy manufacture and low cost, and can be applied to home care or long-term care of patients.

The scope of protection of the present invention is attached to the scope of the patent application Any changes and modifications made by those skilled in the art without departing from the spirit and scope of the invention are intended to be included in the scope of the invention.

10‧‧‧ Physiological signal sensing pad, first physiological signal sensing pad

11‧‧‧Dielectric substrate

111‧‧‧Sensing block

111a‧‧‧ first surface

111b‧‧‧second surface

12‧‧‧electrode layer

13‧‧‧Electrical cable

20‧‧‧ cushion body

20a‧‧‧ upper surface

20b‧‧‧ lower surface

30‧‧‧Central Processing Unit

40‧‧‧dielectric fabric

50‧‧‧Second Physioelectric Signal Sensing Pad

60‧‧‧ bed frame

C‧‧‧Capacitive sensing unit

M‧‧‧Sensing mattress

1 is a schematic structural view of a physiological electrical signal sensing pad of the present invention; FIG. 2 is a cross-sectional view showing a physiological electrical signal sensing pad along line XX of FIG. 1; and FIG. 3 is a schematic view showing a human body lying on a physiological electrical sensing pad. FIG. 4 is a schematic view showing the structure of the sensing mattress according to the first embodiment of the present invention; FIG. 5 is a schematic view showing the connection of the central processing unit, the electrical connecting line and the electrode layer; and FIG. 6 is a view showing the physiological physiological signal of the human body using the sensing mattress of the present invention; Sensed array response map; and Figure 7 shows a schematic view of the structure of the sensing mattress of the second embodiment of the present invention.

10‧‧‧ Physiological signal sensing pad

11‧‧‧Dielectric substrate

111‧‧‧Sensing block

111b‧‧‧second surface

12‧‧‧electrode layer

C‧‧‧Capacitive sensing unit

Claims (12)

A physiological electrical signal sensing pad comprises: a dielectric substrate, a plurality of sensing blocks, each of the sensing blocks having a first surface and an opposite second surface, and the The sensing blocks are arranged in an array; a plurality of electrode layers are respectively disposed on the first surface of each of the sensing blocks; and at least one electrical connection line is electrically connected to the electrode layers. The physiological electrical signal sensing pad of claim 1, wherein the electrode layers have the same geometrical dimensions. The physiological electrical signal sensing pad of claim 1, wherein the geometrical dimensions of the electrode layers are different. A sensing mattress comprising: a pad body having an upper surface and a lower surface; and a first physiological electrical signal sensing pad disposed on the upper surface of the pad body, comprising: The dielectric substrate is provided with a plurality of sensing blocks, each of the sensing blocks has a first surface and an opposite second surface, and the sensing blocks are distributed in an array; The electrode layers are respectively disposed on the first surface of each of the sensing blocks; and the at least one electrical connection line is electrically connected to the electrode layers. The sensing mattress of claim 4, further comprising a dielectric fabric disposed on the first physiological electrical signal sensing pad. A sensing mattress according to claim 5, wherein the dielectric fabric is provided Placed on the dielectric substrate of the first physiological electrical signal sensing pad. The sensing mattress of claim 5, wherein the dielectric fabric is disposed on the electrode layers of the first physiological electrical sensing pad. The sensing mattress of claim 5, wherein the dielectric fabric is selected from the group consisting of a sheet and a cleaning pad. The sensing mattress of claim 4, further comprising a central processing unit electrically connected to the electrical connection line. The sensing mattress of claim 4, further comprising a bed frame, the pad system being disposed on the bed frame. The sensing mattress of claim 10, further comprising a second physiological electrical signal sensing pad disposed between the bed frame and the cushion body. The sensing mattress of claim 11, wherein the structure of the second physiological electrical sensing pad is the same as the structure of the first physiological electrical sensing pad.