REAL-TIME PHYSIOLOGICAL SIGNAL MEASUREMENT AND FEEDBACK SYSTEM

• US 20130085346A1
• Filed: 08/14/2012
• Published: 04/04/2013
• Est. Priority Date: 10/04/2011
• Status: Active Grant

• Current Assignee: National Taiwan University of Science and Technology
• Original Assignee: National Taiwan University of Science and Technology
• Inventors: Lin, Chih-Fong, You, He-Zhong, LIN, Yuan-Hsiang
• Granted Patent: US 8,734,343 B2
• Time in Patent Office: Days
• US Class Current: 600/301
• CPC Class Codes: A61B 2562/14 Coupling media or elements to improve sensor contact with skin or tissue
• CPC Class Codes: A61B 5/002 Monitoring the patient using a local or closed circuit, e.g. in a room or building A61B5/0017 takes precedence
• CPC Class Codes: A61B 5/0059 using light, e.g. diagnosis by transillumination, diascopy, fluorescence A61B5/0093, A61B5/1455, A61B5/02416 and A61B5/0261 take precedence
• CPC Class Codes: A61B 5/02433 for infrared radiation
• CPC Class Codes: A61B 5/11 Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb for measuring pulse A61B5/02 ;A61B5/1038 takes precedence; motion detection to correct for motion artifacts in physiological signals A61B5/721
• CPC Class Codes: A61B 5/1112 Global tracking of patients, e.g. by using GPS
• CPC Class Codes: A61B 5/1113 Local tracking of patients, e.g. in a hospital or private home
• CPC Class Codes: A61B 5/1116 Determining posture transitions
• CPC Class Codes: A61B 5/6816 Ear lobe
• CPC Class Codes: A61B 5/683 Means for maintaining contact with the body A61B5/6802 takes precedence
• CPC Class Codes: A61B 5/6893 Cars
• CPC Class Codes: G16H 40/67 for remote operation

Abstract

A real-time physiological signal measurement and feedback system is suitable to be worn on a body part of an user for decreasing the noise of motion, and includes a sensor module, a signal processing module and a feedback platform. The sensor module includes a first magnetic unit having a light emitting diode and a second magnetic unit having a photo-detector. The light emitting diode illuminates a light beam passing through the body part and being received by the photo-detector so as to generate an electric signal when both of the first and the second magnetic units attract mutually to sandwich the body part. The signal processing module converts the electrical signal into a digital signal. The feedback platform processes the digital signal to generate a physiological parameter, and is used as a multi-function driving recorder. An alarm is triggered or not by the feedback platform according to the physiological parameter.

Claims

1. A real-time physiological signal measurement and feedback system, comprising:

a sensor module, adapted to being held on a body part of an user, comprising a first magnetic unit with a light emitting diode (LED) and a second magnetic unit with a photo-detector, such that the light emitting diode illuminates a light beam passing through the body part of the user and being received by the photo-detector thereby a first electric signal is generated by the photo-detector, when the first magnetic unit and the second magnetic unit magnetically attract mutually and sandwich the body part of the user therebetween;

a signal processing module, electrically connected to the sensor module for receiving the first electric signal therefrom, for processing the first electric signal to generate a second electric signal and convert the second electric signal into a digital signal; and

a feedback platform for receiving and processing the digital signal received from the signal processing module to generate a physiological parameter, and trigger an alarm according to the physiological parameter.

2. The real-time physiological signal measurement and feedback system of claim 1, wherein the sensor module comprises a gravity sensing element such that the gravity sensing element generates a third electric signal if the sensor module is shaken.

3. The real-time physiological signal measurement and feedback system of claim 1, wherein the signal processing module is a system-on-a-chip (SoC), and comprises an operation amplifier, a converter and a wireless transmitter, wherein the operation amplifier is used for processing the first electric signal to output a second electric signal;

the converter is electrically connected to the operation amplifier for receiving the second electric signal therefrom and converting the second electric signal into the digital signal; and

the wireless transmitter is electrically connected to the converter for sending the digital signal to the signal processing module.

4. The real-time physiological signal measurement and feedback system of claim 1, wherein the feedback platform comprises a wireless receiver, a real-time process unit and an alarm unit, wherein the wireless receiver is used to receive the digital signal;

the real-time process unit is signally connected to the wireless receiver for generating the physiological parameter according to the digital signal; and

the alarm unit is electrically connected to the real-time process unit for triggering the alarm.

5. The real-time physiological signal measurement and feedback system of claim 4, wherein the real-time process unit comprises a bandpass filter, a squaring amplifier and a differential amplifier, wherein the bandpass filter is used to remove a noise from the digital signal;

the squaring amplifier is used to amplify the digital signal after the noise is removed from precedent bandpass filter; and

the differential amplifier is used to differentiate the digital signal amplified by the squaring amplifier for extracting a slope value.

6. The real-time physiological signal measurement and feedback system of claim 4, wherein the real-time process unit comprises a wave peak detector and a heart rate counter, wherein the wave peak detector is used to obtain a plurality of wave peak values in accordance with the slope value;

and the heart rate counter is used to obtain a heart rate value (HR) in accordance with a time interval between two wave peak values.

7. The real-time physiological signal measurement and feedback system of claim 1, wherein the alarm unit comprises a referential threshold range for triggering the alarm if the physiological parameter exceeds the referential threshold range.

8. The real-time physiological signal measurement and feedback system of claim 1, wherein the alarm is a sound alerting effect, a vibration alerting effect or a visual alerting message prompt.

9. The real-time physiological signal measurement and feedback system of claim 1, wherein the feedback platform comprises a mobile communication device and is signally connected to a supervisory platform comprising a medical center.

10. The real-time physiological signal measurement and feedback system of claim 9, wherein the feedback platform comprises a positioning system and a vehicle driving recording, system, wherein the positioning system is used for getting a position of the user;

the vehicle driving recording system records a driving video comprising an image inside and outside the vehicle; and

the feedback platform is used to transmit the physiological parameter and the position of the user as well as the driving video to the supervisory platform.

11. The real-time physiological signal measurement and feedback system of claim 1, wherein the feedback platform is a multi-function driving recorder for generating an image data and recording the image data and the physiological parameter.