Closed Loop Respiratory Monitoring System For Sleep Quality Characterization
A system and method for sensing sleep abnormality in a user is disclosed. The system can include an accelerometer sensor in contact with the skin of the user to measure the deflection of the body during respiration and generate a respiration waveform. A controller receives the respiration waveform from the accelerometer sensor to determine a sleep abnormality measurement as a function of the respiration waveform.
1 . A sensor system for sensing a sleep abnormality in a user, the system comprising:
an accelerometer sensor in contact with the skin of the user to measure a deflection of the body during respiration and generate a respiration waveform;
a controller receives the respiration waveform from the accelerometer sensor to determine a sleep abnormality measurement as a function of the respiration waveform.
2 . The sensor system of claim 1 , further comprising a heart beat sensor in contact with the skin of a user to measure a heart beat waveform, wherein the controller receives the heart beat waveform from the heart beat sensor and determines the sleep abnormality measurement from the heart beat waveform.
3 . The sensor system of claim 2 , wherein the heart beat sensor is one of an ECG sensor, a SCG sensor or a PPG sensor.
4 . The sensor system of claim 1 , further comprising an external device in communication with the controller, wherein the controller is operative to control the external device to induce a change in the position of the user.
5 . The sensor system of claim 4 , wherein the external device is an alarm.
6 . The sensor system of claim 4 , wherein the external device is a mattress including an actuator to induce a position change of the user.
7 . The sensor system of claim 2 , further comprising a memory for storing the heart beat waveform and the accelerometer waveform.
8 . The sensor system of claim 2 , further comprising a transceiver to transmit the heart beat waveform and the accelerometer waveform.
9 . The sensor system of claim 8 , further comprising a user device in communication with the transceiver to receive the heart beat waveform and the accelerometer waveform, the user device operative to determine the sleep abnormality measurement.
10 . The sensor system of claim 1 , wherein the accelerometer sensor is on an attachable sensor near the carotid artery.
11 . A method of detecting a sleep abnormality in a user comprising:
attaching an accelerometer sensor in contact with the skin of the user to measure a deflection of the body during respiration;
generating a respiration waveform from the accelerometer sensor;
receiving a respiration waveform from the accelerometer sensor by a controller; and
determining a sleep abnormality measurement as a function of the respiration waveform via the controller.
12 . The method of claim 11 , further comprising:
attaching a heart beat sensor in contact with the skin of a user to measure a heart beat waveform;
generating a heart beat waveform; and
wherein the controller receives the heart beat waveform from the heart beat sensor and determines the sleep abnormality measurement from the heart beat waveform.
13 . The method of claim 12 , wherein the heart beat sensor is one of an ECG sensor, a SCG sensor or a PPG sensor.
14 . The method of claim 11 , further comprising providing an external device in communication with the controller, wherein the controller is operative to control the external device to induce a change in the position of the user.
15 . The method of claim 14 , wherein the external device is an alarm.
16 . The method of claim 14 , wherein the external device is a mattress including an actuator to induce a position change of the user.
17 . The method of claim 11 , further comprising storing the respiration waveform in a memory.
18 . The method of claim 11 , further comprising transmitting the respiration waveform.
19 . The method of claim 18 , further comprising:
receiving the transmitted respiration waveform via a user device; and
determining the sleep abnormality measurement via the user device.
20 . The method of claim 12 , wherein the heart beat sensor is on an attachable sensor near the heart; and the accelerometer sensor is on another attachable sensor near the carotid artery.