Wrist blood pressure monitor and measurement method thereof

Abstract

The invention relates to a wrist blood pressure monitor and a measurement method thereof. The method comprises the steps that after a microprocessor receives a measurement signal, an electromagnetic air vent valve is turned off; a pressurization air pump is turned on, a pressure value of a wrist strap is read, whether or not the pressure value reaches the judgement pressure is judged, if yes, thepressurization air pump is turned off, a rubber air release valve is turned on and air is slowly released at the same time, the pressure value of the wrist strap is read, and a pulse wave signal is extracted through a Butterworth band pass filter; the pulse wave signal forms a pulse wave envelope line, a peak point corresponding to the maximum value point of the pulse wave envelope line is used asa demarcation point, the pulse wave envelope line is divided into an uphill segment and a downhill segment by the demarcation point, a blood pressure value at the contraction period is determined through the uphill segment, and a blood pressure value at the relaxation period is determined through the downhill segment. According to the wrist blood pressure monitor and the measurement method thereof, the cost is relatively low, the stability is good, and the method is not easily interfered; the wrist blood pressure monitor establishes communication through Bluetooth and a mobile terminal and uploaded to a cloud platform, and remote network monitoring of a doctor for the blood pressure of a patient is achieved.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a wrist-type sphygmomanometer and a measuring method thereof. Background technique [0002] The traditional upper arm wristband sphygmomanometer is generally composed of a wristband, a pressurized air pump, an exhaust valve, and a piezoelectric pressure sensor. The wristband sphygmomanometer generally uses the oscillometric method to determine blood pressure. [0003] During the use of the upper arm wristband sphygmomanometer, the wristband is tied to the upper arm of the measurer, the air pump is pressurized to a certain extent, the arteries of the human body are blocked, and the exhaust valve is used to deflate slowly, and the real-time generation during the deflation process is recorded. The pressure value is determined by an empirical algorithm to determine the systolic blood pressure and diastolic blood pressure of the measurer. [0004] At the same cost, the output signal ...

AI Technical Summary

Problems solved by technology

[0004] At the same cost, the output signal of the pressure sensor used in the traditional electronic sphygmomanometer is an analog signal, the conversion accuracy is limited by the device itself, and the subsequent analog-to-digital conversion accuracy, and the analog signal has low noise tolerance and is susceptible to interference

Traditional sphygmomanometers are mostly used for local measurement, and cannot be connected to the network to realize remote interaction with doctors, so the application is limited to a certain extent

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