Sensing device for head BCG signal acquisition

Abstract

A sensing device for head BCG signal acquisition comprises an upper packaging soft body, a signal transmission line, a metal plate, a piezoelectric sensor, a mounting plate and a lower packaging soft body. The invention provides an implantable multi-scene unconstrained BCG signal acquisition sensing device, and the device can reduce signal attenuation, improve the anti-interference capability and obtain high-quality BCG signals, and can be used for accurately measuring vital sign parameters such as blood pressure, heart rate, respiration and sleep. Through the high signal-to-noise ratio force-electric coupling design of the metal plate and the pillow, the signal-to-noise ratio of BCG signal output is greatly improved; the comfort level of the headrest cannot be affected by the embedded design, and real non-inductive, non-invasive and non-interference installation is achieved; the device can be used for non-invasive, non-inductive, continuous and real-time research on multiple vital signs such as blood pressure, heart rate, respiration and sleep; the structure is simple, standardized production is easy, cost is low, and popularization is easy.

Description

Technical Field

[0001] This invention relates to the field of vital sign detection technology, specifically to a sensing device for acquiring head BCG signals. Background Technology

[0002] Vital signs are core indicators reflecting basic physiological functions of the human body, including body temperature, pulse, respiratory rate, blood pressure, and blood oxygen saturation. They are the cornerstone of clinical medicine, emergency care, and health management, and have significant medical and social value. Taking blood pressure monitoring as an example, most existing methods are single-measurement methods, which may result in white coat hypertension or masked hypertension. If masked hypertension exists, a single measurement may fail to detect cardiovascular disease symptoms, potentially leading to irreversible organ damage and missing the optimal treatment window. Therefore, continuous vital signs monitoring (CVSM) is of greater significance than traditional intermittent measurements.

[0003] Existing methods for acquiring ballistocardiogram (BCG) signals include those based on piezoelectric films, optical fibers, or pressure sensors. However, they still face severe challenges in real-world, unconstrained applications. The core bottleneck lies in the fact that the signal is easily affected by various external conditions, resulting in a low signal-to-noise ratio and difficulty in stably acquiring high-quality BCG signals. This severely restricts their engineering and large-scale application. Summary of the Invention

[0004] The purpose of this invention is to provide a sensing device for acquiring head BCG signals, comprising: upper encapsulation software, signal transmission line, metal plate, piezoelectric sensor, mounting plate, and lower encapsulation software.

[0005] The upper and lower encapsulation software are combined to form a support component for supporting the head of the person being tested.

[0006] An installation plate is provided between the upper packaging software and the lower packaging software.

[0007] The mounting plate has a metal plate slot on the mounting surface facing the upper part of the encapsulated software, and the metal plate slot is directly opposite the head position of the person being tested.

[0008] The metal plate slot has a sensor groove at its center, and a wiring hole is provided on one side of the sensor groove.

[0009] The metal plate is used to improve the coupling efficiency between the piezoelectric sensor and the vibration of the human head, and is placed in the slot of the metal plate of the mounting plate.

[0010] The piezoelectric sensor is fixed at the center of the metal plate and placed in the sensor groove of the mounting plate.

[0011] The piezoelectric sensor is used to collect BCG signals from the head of the person being tested while lying down.

[0012] The signal transmission line passes through the wiring hole and is electrically connected to the piezoelectric sensor.

[0013] The BCG signal collected by the piezoelectric sensor is transmitted through a signal transmission line.

[0014] Furthermore, the encapsulated software comes into contact with the test subject, providing support that conforms to the physiological curvature of the test subject.

[0015] Furthermore, the supporting components include pillows, cushions, and mattresses.

[0016] Furthermore, the piezoelectric sensor is fixed to the metal plate with adhesive cotton.

[0017] Furthermore, the piezoelectric sensor is fixed to the metal plate by an elastic bracket.

[0018] Furthermore, the metal plate is made of stainless steel.

[0019] Furthermore, the metal plate includes a galvanized plate.

[0020] Furthermore, the metal plate includes an aluminum alloy plate.

[0021] Furthermore, the thickness of the metal plate ranges from 0.5 mm to 2 mm.

[0022] The technical effects of this invention are undeniable. This invention proposes a BCG signal acquisition and sensing device that can be implanted in multiple scenarios without constraints. This device can reduce signal attenuation, improve anti-interference ability, and obtain high-quality BCG signals, which can be used for accurate measurement of vital signs parameters such as blood pressure, heart rate, respiration, and sleep.

[0023] This invention significantly improves the signal-to-noise ratio of BCG signal output through a high signal-to-noise ratio force-electric coupling design of a metal plate and pillow; the embedded design does not affect the comfort of the headrest, achieving truly imperceptible, non-invasive, and interference-free installation; it can be used for non-invasive, imperceptible, continuous, and real-time research on multiple vital signs such as blood pressure, heart rate, respiration, and sleep; the structure is simple, easy to standardize and produce, low in cost, and easy to promote. Attached Figure Description

[0024] Figure 1 This is a diagram of the pillow's packaging.

[0025] Figure 2 This is an overall structural diagram of the pillow scene integration device;

[0026] Figure 3 This is a diagram of the pillowcase packaging;

[0027] Figure 4 This is an overall structural diagram of the pillow cushion scene implantation device;

[0028] Figure 5 This is a diagram of the mattress packaging.

[0029] Figure 6 This is an overall structural diagram of the mattress scene implantation device;

[0030] In the diagram: 1. Upper encapsulation software; 2. Signal transmission line; 3. Metal plate; 4. Piezoelectric sensor; 5. Mounting plate; 6. Lower encapsulation software; 7. Terminal device. Detailed Implementation

[0031] The present invention will be further described below with reference to embodiments, but it should not be construed that the scope of the present invention is limited to the following embodiments. Various substitutions and modifications made based on ordinary technical knowledge and common practices in the art without departing from the above-described technical concept of the present invention should be included within the scope of protection of the present invention.

[0032] Example 1:

[0033] See Figures 1 to 6 A sensing device for acquiring head BCG signals includes: upper encapsulation software 1, signal transmission line 2, metal plate 3, piezoelectric sensor 4, mounting plate 5, and lower encapsulation software 6.

[0034] The upper encapsulation software 1 and the lower encapsulation software 6 are combined to form a support component for supporting the head of the person being tested.

[0035] An installation plate 5 is provided between the upper packaging software 1 and the lower packaging software 6.

[0036] The mounting plate 5 has a metal plate slot on the mounting surface of the encapsulated software 1 facing upwards, and the metal plate slot is directly opposite the head position of the person being tested.

[0037] The metal plate slot has a sensor groove at its center, and a wiring hole is provided on one side of the sensor groove.

[0038] The metal plate 3 is used to improve the coupling efficiency between the piezoelectric sensor 4 and the vibration of the human head, and is placed in the slot of the metal plate of the mounting plate 5.

[0039] The piezoelectric sensor 4 is fixed at the center of the metal plate 3 and placed in the sensor groove of the mounting plate 5.

[0040] The piezoelectric sensor 4 is used to collect the BCG signal from the head of the person being tested while lying down.

[0041] The signal transmission line 2 passes through the wiring hole and is electrically connected to the piezoelectric sensor 4.

[0042] The BCG signal collected by the piezoelectric sensor 4 is transmitted through the signal transmission line 2.

[0043] Example 2:

[0044] A sensing device for acquiring head BCG signals, the main technical contents of which are described in Embodiment 1, and further, the sensing device also includes a terminal device 7.

[0045] The terminal device 7 is electrically connected to the signal transmission line 2 and receives the BCG vibration signal collected by the piezoelectric sensor 4.

[0046] After receiving the BCG signal, the terminal device 7 can obtain the blood pressure, heart rate, respiratory rate, etc. of the person being tested through further processing.

[0047] Example 3:

[0048] A sensing device for collecting BCG signals from the head, the main technical contents of which are described in any one of Embodiments 1 to 2, further wherein the upper encapsulated soft body 1 is in contact with the subject and provides support for the subject in accordance with the physiological curvature.

[0049] Example 4:

[0050] A sensing device for collecting BCG signals from the head, the main technical contents of which are described in any one of Embodiments 1 to 3, further wherein the supporting component includes a pillow, a cushion, and a mattress.

[0051] Example 5:

[0052] A sensing device for acquiring BCG signals from the head, the main technical contents of which are described in any one of Embodiments 1 to 4, further wherein the piezoelectric sensor 4 is fixed to the metal plate 3 by means of adhesive cotton.

[0053] Example 6:

[0054] A sensing device for acquiring BCG signals from the head, the main technical contents of which are described in any one of Embodiments 1 to 5, further wherein the piezoelectric sensor 4 is fixed on the metal plate 3 by an elastic bracket.

[0055] Example 7:

[0056] A sensing device for acquiring BCG signals from the head, the main technical contents of which are described in any one of Embodiments 1 to 6, further wherein the material of the metal plate 3 includes stainless steel.

[0057] Example 8:

[0058] A sensing device for acquiring BCG signals from the head, the main technical contents of which are described in any one of Embodiments 1 to 7, further wherein the metal plate 3 includes a galvanized plate.

[0059] Example 9:

[0060] A sensing device for acquiring BCG signals from the head, the main technical contents of which are described in any one of Embodiments 1 to 8, further wherein the metal plate 3 includes an aluminum alloy plate.

[0061] Example 10:

[0062] A sensing device for acquiring BCG signals from the head, the main technical contents of which are described in any one of embodiments 1 to 9, further wherein the thickness of the metal plate 3 is in the range of 0.5 mm to 2 mm.

[0063] Example 11:

[0064] See Figures 1 to 6 A sensing device for acquiring BCG signals from the head, the main technical contents of which include:

[0065] A BCG signal acquisition device is disclosed, which can be embedded in various applications such as pillows, cushions, and mattresses. Specifically, the human head rests on the pillow, cushion, or mattress containing the embedded BCG signal acquisition device, placed on top of the pillow. The pillow with the embedded BCG signal acquisition device can be used directly as a pillow. The BCG signal acquisition device improves the electromechanical coupling between the piezoelectric sensor and the pillow by adding a metal plate above the sensor, thereby enhancing the BCG signal quality and anti-interference capability, enabling non-invasive, undetectable, and continuous measurement of vital signs such as blood pressure, heart rate, respiration, and sleep.

[0066] Example 12:

[0067] See Figures 1 to 6 A sensing device for acquiring BCG signals from the head is disclosed. The main technical components include: encapsulated software, a metal plate, a piezoelectric sensor, a mounting plate, and a signal transmission line. The piezoelectric sensor is fixed to the metal plate via adhesive or an elastic bracket. The metal plate can be made of stainless steel, galvanized iron, aluminum alloy, or other materials of equivalent strength. The metal plate cooperates with a pre-reserved rigid support groove inside the pillow body to improve the coupling efficiency between the sensor and the force-electric signals from the human head. The piezoelectric sensor is used to acquire BCG signals generated when the subject is lying down. The signal transmission line connects to the output end of the piezoelectric sensor to complete the real-time transmission of the acquired BCG signals.

[0068] Example 13:

[0069] See Figures 1 to 6 A sensing device for acquiring BCG signals from the head, the main technical contents of which include:

[0070] Pillow structure composition as follows Figures 1 to 2 As shown, this device includes upper encapsulation software, signal transmission line, metal plate, piezoelectric sensor, mounting plate, and lower encapsulation software. The metal plate is typically made of high-strength metal material with a thickness of 0.5 to 2.0 mm. The material can be stainless steel, galvanized sheet, aluminum alloy sheet, or other metal materials of equivalent strength, and its size matches the slot of the mounting plate. The piezoelectric sensor is glued or fixed to the center of the metal plate by a flexible bracket. The signal transmission line must be a low-noise cable.

[0071] Assembly method: After placing the metal plate into the reserved slot of the mounting plate, only leave the piezoelectric sensor output port connected to the signal transmission line. It is necessary to ensure that the piezoelectric sensor and the signal transmission line can be fixed and that the signal transmission line can extend outside the device.

[0072] Working principle: The BCG signal from the subject's head is transmitted to the metal plate through the pillow, and then the force-electric signal is coupled out by the piezoelectric sensor. The signal transmission line then transmits the BCG signal to the next-level terminal device.

[0073] Example 14:

[0074] See Figures 1 to 6 A sensing device for acquiring BCG signals from the head, the main technical contents of which include:

[0075] Pillow cushion structure composition as follows Figures 3 to 4 As shown, this device includes upper encapsulation software, signal transmission line, metal plate, piezoelectric sensor, mounting plate, and lower encapsulation software. The metal plate is typically made of high-strength metal material with a thickness of 0.5 to 2.0 mm. The material can be stainless steel, galvanized sheet, aluminum alloy sheet, or other metal materials of equivalent strength, and its size matches the slot of the mounting plate. The piezoelectric sensor is glued or fixed to the center of the metal plate by a flexible bracket. The signal transmission line must be a low-noise cable.

[0076] Assembly method: After placing the metal plate into the reserved slot of the mounting plate, only leave the piezoelectric sensor output port connected to the signal transmission line. It is necessary to ensure that the piezoelectric sensor and the signal transmission line can be fixed and that the signal transmission line can extend outside the device.

[0077] Working principle: The BCG signal from the subject's head is transmitted to the metal plate through the pillow, and then the force-electric signal is coupled out by the piezoelectric sensor. The signal transmission line then transmits the BCG signal to the next-level terminal device.

[0078] Example 15:

[0079] See Figures 1 to 6 A sensing device for acquiring BCG signals from the head, the main technical contents of which include:

[0080] Mattress structure composition as follows Figures 5 to 6 As shown, this device includes upper encapsulation software, signal transmission line, metal plate, piezoelectric sensor, mounting plate, and lower encapsulation software. The metal plate is typically made of high-strength metal material with a thickness of 0.5 to 2.0 mm. The material can be stainless steel, galvanized sheet, aluminum alloy sheet, or other metal materials of equivalent strength, and its size matches the slot of the mounting plate. The piezoelectric sensor is glued or fixed to the center of the metal plate by a flexible bracket. The signal transmission line must be a low-noise cable.

[0081] Assembly method: After placing the metal plate into the pre-drilled slot on the mounting plate, only connect the piezoelectric sensor output port to the signal transmission line. Ensure the piezoelectric sensor and signal transmission line are securely fixed, and that the signal transmission line extends beyond the device. The mounting plate can be configured separately, or mattress material can be used as the mounting plate.

[0082] Working principle: The BCG signal from the subject's head is transmitted to the metal plate through the pillow, and then the force-electric signal is coupled out by the piezoelectric sensor. The signal transmission line then transmits the BCG signal to the next-level terminal device.

Claims

1. A sensing device for acquiring head BCG signals, characterized in that, include: Upper encapsulation software (1), signal transmission line (2), metal plate (3), piezoelectric sensor (4), mounting plate (5), lower encapsulation software (6).

2. The upper encapsulation software (1) and the lower encapsulation software (6) are combined to form a support component for supporting the head of the person being tested; An installation plate (5) is provided between the upper packaging software (1) and the lower packaging software (6); The mounting plate (5) has a metal plate slot on the mounting surface facing the upper encapsulation software (1), and the metal plate slot is directly opposite the head position of the person being tested. The metal plate slot has a sensor groove at its center, and a wiring hole is provided on one side of the sensor groove. The metal plate (3) is used to improve the coupling efficiency between the piezoelectric sensor (4) and the vibration of the human head, and is placed in the slot of the metal plate of the mounting plate (5). The piezoelectric sensor (4) is fixed at the center of the metal plate (3) and placed in the sensor groove of the mounting plate (5); The piezoelectric sensor (4) is used to collect the BCG signal of the head of the person being tested when lying down; The signal transmission line (2) passes through the wiring hole and is electrically connected to the piezoelectric sensor (4); The BCG signal collected by the piezoelectric sensor (4) is transmitted through the signal transmission line (2).

3. The sensing device for acquiring head BCG signals according to claim 1, characterized in that, The encapsulated software (1) comes into contact with the test subject, providing support that conforms to the physiological curvature of the test subject.

4. The sensing device for acquiring head BCG signals according to claim 1, characterized in that, The supporting components include pillows, cushions, and mattresses.

5. A sensing device for acquiring head BCG signals according to claim 1, characterized in that, The piezoelectric sensor (4) is fixed to the metal plate (3) by adhesive cotton.

6. The sensing device for acquiring head BCG signals according to claim 1, characterized in that, The piezoelectric sensor (4) is fixed to the metal plate (3) by an elastic bracket.

7. The sensing device for acquiring head BCG signals according to claim 1, characterized in that, The metal plate (3) is made of stainless steel.

8. The sensing device for acquiring head BCG signals according to claim 1, characterized in that, The metal plate (3) includes galvanized plate.

9. A sensing device for acquiring head BCG signals according to claim 1, characterized in that, The metal plate (3) includes an aluminum alloy plate.

10. A sensing device for acquiring head BCG signals according to claim 1, characterized in that, The thickness of the metal plate (3) ranges from 0.5 mm to 2 mm.

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