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CN-121987162-A - Sensing device for head BCG signal acquisition

CN121987162ACN 121987162 ACN121987162 ACN 121987162ACN-121987162-A

Abstract

A sensing device for head BCG signal acquisition comprises upper packaging software, a signal transmission line, a metal plate, a piezoelectric sensor, a mounting plate and lower packaging software. The invention provides an implantable multi-scene unconstrained BCG signal acquisition sensing device which can reduce signal attenuation, improve 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, sleep and the like. The invention greatly improves the signal-to-noise ratio of the BCG signal output by the high signal-to-noise ratio force electric coupling design of the metal plate and the pillow, the embedded design does not influence the comfort level of the headrest, realizes the real noninvasive, noninvasive and noninterference installation, can be used for noninvasive, noninductive, continuous, real-time blood pressure, heart rate, respiration, sleep and other vital sign researches, has simple structure, is easy for standardized production, has low cost and is easy to popularize.

Inventors

  • LIU JUN
  • LI MIN

Assignees

  • 德阳智能机器人研究院
  • 重庆大学

Dates

Publication Date
20260508
Application Date
20251206
Priority Date
20251202

Claims (10)

  1. 1. The sensing device for head BCG signal acquisition is characterized by comprising upper packaging software (1), a signal transmission line (2), a metal plate (3), a piezoelectric sensor (4), a mounting plate (5) and lower packaging software (6).
  2. 2. The upper packaging software (1) and the lower packaging software (6) are combined to form a supporting part for bearing the head of the tested person; A mounting plate (5) is arranged between the upper packaging software (1) and the lower packaging software (6); The mounting plate (5) is provided with a metal plate notch on the mounting surface facing the upper packaging soft body (1), and the metal plate notch is opposite to the head position of the tested person; a sensor groove is formed in the center of the notch of the metal plate, and a wiring hole is formed in one side of the sensor groove; The metal plate (3) is used for improving the coupling efficiency of the piezoelectric sensor (4) and the vibration of the head of a human body, and is arranged in a notch of the metal plate of the mounting plate (5); The piezoelectric sensor (4) is fixed at the center of the metal plate (3) and is placed in a sensor groove of the mounting plate (5); the piezoelectric sensor (4) is used for collecting BCG signals of the head of the person to be tested when lying down; The signal transmission line (2) penetrates out of the wiring hole and is electrically connected with the piezoelectric sensor (4); BCG signals collected by the piezoelectric sensor (4) are transmitted through the signal transmission line (2).
  3. 3. A sensing device for BCG signal acquisition of the head according to claim 1, characterized in that said upper packaging software (1) is in contact with the person under test, providing the person under test with a support conforming to physiological curvature.
  4. 4. A sensing device for BCG signal acquisition of the head according to claim 1, wherein said support means comprises a pillow, a mattress.
  5. 5. A sensing device for head BCG signal acquisition according to claim 1, characterized in that the piezoelectric sensor (4) is fixed to the metal plate (3) by means of collodion.
  6. 6. A sensing device for head BCG signal acquisition according to claim 1, characterized in that the piezoelectric sensor (4) is fixed to the metal plate (3) by means of a flexible bracket.
  7. 7. A sensing device for head BCG signal acquisition according to claim 1, characterized in that the material of the metal plate (3) comprises stainless steel.
  8. 8. A sensing device for head BCG signal acquisition according to claim 1, characterized in that the metal plate (3) comprises a galvanized plate.
  9. 9. A sensing device for head BCG signal acquisition according to claim 1, characterized in that the metal plate (3) comprises an aluminium alloy plate.
  10. 10. Sensing device for head BCG signal acquisition according to claim 1, characterized in that the thickness of the metal plate (3) ranges from 0.5mm to 2mm.

Description

Sensing device for head BCG signal acquisition Technical Field The invention relates to the technical field of vital sign detection, in particular to a sensing device for head BCG signal acquisition. Background Vital signs (VITAL SIGNS) are core indexes reflecting basic physiological functions of human bodies, including body temperature, pulse, respiratory rate, blood pressure, blood oxygen saturation and the like, are basic stones for clinical medicine, emergency nursing and health management, and have important medical and social values. Taking blood pressure detection as an example, most of the existing blood pressure measurement methods are single measurement, and the situations of white overcoat hypertension or latent hypertension may occur, once the latent hypertension exists, cardiovascular disease symptoms cannot be detected by single measurement, and irreversible damage to organs may be caused, so that the optimal treatment time is missed. Continuous vital sign detection (CVSM) is of greater importance than conventional intermittent measurement. The existing ballistocardiogram signal (Ballistocardiogram, BCG) acquisition method comprises the principle based on a piezoelectric film, an optical fiber or a pressure sensor, and the like, but the method is in any serious challenge in an actual unconstrained application scene, and has the core bottleneck that the signal is extremely easy to be interfered by various external conditions, so that the signal-to-noise ratio is low, and the high-quality BCG signal is difficult to stably acquire, so that engineering and large-scale application of the BCG signal are severely restricted. Disclosure of Invention The invention aims to provide a sensing device for head BCG signal acquisition, which comprises upper packaging software, a signal transmission line, a metal plate, a piezoelectric sensor, a mounting plate and lower packaging software. The upper and lower packaging software are combined to form a support member for carrying the head of the person under test. A mounting plate is arranged between the upper packaging software and the lower packaging software. The mounting plate is provided with a metal plate notch facing the mounting surface of the upper packaging software, and the metal plate notch is opposite to the head position of the tested person. The center of the notch of the metal plate is provided with a sensor groove, and one side of the sensor groove is provided with a wiring hole. The metal plate is used for improving the coupling efficiency of the piezoelectric sensor and the vibration of the head of a human body, and is placed in a notch of the metal plate of the mounting plate. The piezoelectric sensor is fixed at the center of the metal plate and is placed in the sensor groove of the mounting plate. The piezoelectric sensor is used for collecting BCG signals of the head of the person to be tested when lying. The signal transmission line penetrates out of the wiring hole and is electrically connected with the piezoelectric sensor. And BCG signals acquired by the piezoelectric sensor are transmitted through a signal transmission line. Further, the upper packaging software is contacted with the tested person to provide a support conforming to physiological curvature for the tested person. Further, the support member includes a pillow, a mattress. Further, the piezoelectric sensor is fixed on the metal plate through collodion. Further, the piezoelectric sensor is fixed on the metal plate through an elastic support. Further, the metal plate is made of stainless steel. Further, the metal plate includes a galvanized plate. Further, the metal plate includes an aluminum alloy plate. Further, the thickness range of the metal plate is 0.5 mm-2 mm. The invention has the technical effects that needless to say, the invention provides the implantable multi-scene unconstrained BCG signal acquisition sensing device which can reduce signal attenuation, improve 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, sleep and the like. The invention greatly improves the signal-to-noise ratio of the BCG signal output by the high signal-to-noise ratio force electric coupling design of the metal plate and the pillow, the embedded design does not influence the comfort level of the headrest, realizes the real noninvasive, noninvasive and noninterference installation, can be used for noninvasive, noninductive, continuous, real-time blood pressure, heart rate, respiration, sleep and other vital sign researches, has simple structure, is easy for standardized production, has low cost and is easy to popularize. Drawings FIG. 1 is a packaging view of a pillow; FIG. 2 is an overall block diagram of a pillow scene implant device; FIG. 3 is a packaging view of a pillow; FIG. 4 is an overall block diagram of a pillow scene implant device; FIG. 5 is an enca