Real-time blood pressure monitoring system and method based on ballistocardiogram and photoelectrical signals

Abstract

The invention relates to a real-time blood pressure monitoring system and method based on ballistocardiogram and photoelectrical signals. The system comprises a PC (personal computer), a bed, a photoplethysmogram acquisition device, a ballistocardiogram acquisition device and a synchronous signal acquirer; the photoplethysmogram acquisition device is a PPG (photoplethysmogram) sensor used for acquiring PPG from a testee and mounted at the testee's fingertip; the ballistocardiogram acquisition device is an acceleration sensor that is mounted on a cross beam of the bed; a signal acquiring direction of the acceleration sensor is parallel to the spine; accelerated vibration signals of a nursing bed due to ballistic shock can be acquired with no binding; both the PPG sensor and the accelerationsensor are connected to the PC through the synchronous signal acquirer; monitoring results are output from a display screen of the PC; the synchronous signal acquirer processes the two signals by means of external triggering. The system has the advantages of good timeliness, goo continuity, zero invasion and the like.

Description

technical field [0001] The invention relates to the field of biomedical detection, in particular to a real-time blood pressure monitoring system and method based on cardiac shock signals and photoelectric signals. Background technique [0002] With the increasingly fast-paced social life, people's lifestyle and dietary structure have undergone tremendous changes, and chronic diseases such as cardiovascular and cerebrovascular diseases and high blood pressure have become killers of human health. Blood pressure is one of the important physiological parameters of the human body. Ambulatory blood pressure (ABP) can be used to identify hypertension, diagnose heart disease, and assess the risk of cardiovascular and cerebrovascular complications. Usually the bound type blood pressure monitoring can only provide the blood pressure value at the current moment, and the obtained blood pressure is easily affected by the current environment, making the blood pressure value abnormal, lead...

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Problems solved by technology

For example, Zhejiang University's (CN201610908106) blood pressure monitoring method based on image processing, the method uses the heart rate calculation based on video processing to obtain blood pressure, M in the formula is an integer within 0-5, and the calculation according to the formula described in the article is not accurate Another example, patent (CN200680014192) continuous blood pressure monitoring system, the ECG sensor is attached to the person, the pulse sensor is placed on the wrist of the person, and the two-way information is directly transmitted to the computer for processing, because this blood pressure monitoring method requires Contact with the human body (multiple electrodes need to be attached to the subject's chest) to achieve dynamic collection, which brings certain limitations to the detection of long-term dynamic blood pressure

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