Apparatus for and method of measuring blood pressure
First Claim
Patent Images
1. An apparatus configured to measure blood pressure, the apparatus comprising:
- a sensor configured to radiate light to a body part, and detect a light signal that is changed due to the body part to which the light is radiated;
a signal processor configured to determine a bio signal, based on the light signal; and
a central processing unit configured to;
correct the bio signal;
extract feature points from the bio signal that is corrected;
input the feature points into an artificial neural network algorithm to learn a hidden layer matrix of the artificial neural network algorithm;
estimate a plurality of blood pressures as a product between the hidden layer matrix and a vector that is formed from the feature points;
extract one cycle of the bio signal that is corrected;
extract a systolic upstroke time interval and a diastolic time interval from the one cycle;
determine a linear relation equation of a blood pressure, from the plurality of blood pressures over the systolic upstroke time interval and the diastolic time interval; and
determine the blood pressure, based on the linear relation equation.
1 Assignment
0 Petitions
Accused Products
Abstract
An apparatus for and a method of measuring blood pressure are provided. The apparatus includes a sensor configured to radiate light to a body part, and detect a light signal that is changed due to the body part. The apparatus further includes a signal processor configured to determine a bio signal based on the light signal; and a central processing unit configured to determine a blood pressure based on the bio signal and a blood pressure estimation algorithm.
133 Citations
16 Claims
-
1. An apparatus configured to measure blood pressure, the apparatus comprising:
-
a sensor configured to radiate light to a body part, and detect a light signal that is changed due to the body part to which the light is radiated; a signal processor configured to determine a bio signal, based on the light signal; and a central processing unit configured to; correct the bio signal; extract feature points from the bio signal that is corrected; input the feature points into an artificial neural network algorithm to learn a hidden layer matrix of the artificial neural network algorithm; estimate a plurality of blood pressures as a product between the hidden layer matrix and a vector that is formed from the feature points; extract one cycle of the bio signal that is corrected; extract a systolic upstroke time interval and a diastolic time interval from the one cycle; determine a linear relation equation of a blood pressure, from the plurality of blood pressures over the systolic upstroke time interval and the diastolic time interval; and determine the blood pressure, based on the linear relation equation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A method of measuring blood pressure, the method comprising:
-
radiating light to a body part; detecting a light signal that is changed due to the body part to which the light is radiated; determining a bio signal, based on the light signal; correcting the bio signal; extracting feature points from the bio signal that is corrected; inputting the feature points into an artificial neural network algorithm to learn a hidden layer matrix of the artificial neural network algorithm; estimating a plurality of blood pressures as a product between the hidden layer matrix and a vector that is formed from the feature points; extracting one cycle of the bio signal that is corrected; extracting a systolic upstroke time interval and a diastolic time interval from the one cycle; determining a linear relation equation of the blood pressure, from the plurality of blood pressures over the systolic upstroke time interval and a diastolic time interval; and determining the blood pressure, based on the linear relation equation. - View Dependent Claims (15, 16)
-
Specification