VITAL SIGN MEASUREMENT SYSTEM AND VITAL SIGN MEASUREMENT METHOD THEREOF

• US 20160331249A1
• Filed: 05/15/2015
• Published: 11/17/2016
• Est. Priority Date: 05/15/2015
• Status: Abandoned Application

• Current Assignee: Cheng UEI Precision Industry Company Limited
• Original Assignee: Cheng UEI Precision Industry Company Limited
• Inventors: Chung, Hsiang Ling, Lee, James Cheng, Wu, Kuo Yang, Hsu, Wen Bing
• Application Number:
  US14/712,961
• Publication Number:
  US 20160331249A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 2560/0242 adapted to measure environmental factors, e.g. temperature, pollution
• CPC Class Codes: A61B 5/02416 using photoplethysmograph signals, e.g. generated by infrared radiation A61B5/14552 takes precedence
• CPC Class Codes: A61B 5/0245 by using sensing means generating electric signals, i.e. ECG signals
• CPC Class Codes: A61B 5/0531 Measuring skin impedance
• CPC Class Codes: A61B 5/7225 Details of analog processing, e.g. isolation amplifier, gain or sensitivity adjustment, filtering, baseline or drift compensation A61B5/30, A61B5/316 take precedence; transformers for specific applications H01F38/00; amplifiers H03F

Abstract

A vital sign measurement system includes an excitation signal source, a vital sign sensor, an environmental sensor, an analog front-end sensor electrically connected with the vital sign sensor, and a processor module electrically connected with the excitation signal source, the environmental sensor and the analog front-end sensor. The excitation signal source generates excitation signals. The excitation signals are transmitted to a human body, and then the excitation signals are reflected to generate sensing signals. The vital sign sensor receives the sensing signals, and the sensing signals are converted into a plurality of analog synthetic signals. The environmental sensor receives environmental light. The analog front-end sensor receives and amplifies the analog synthetic signals. The processor module calculates an intensity of the environmental light. And the processor module sends an adjustment instruction to the analog front-end sensor to adjust a sampling frequency of the analog front-end sensor.

Claims

1. A vital sign measurement system, comprising:

an excitation signal source generating excitation signals, the excitation signals being transmitted to skin of a human body, and then the excitation signals being reflected by the human body to generate sensing signals;

a vital sign sensor receiving the sensing signals reflected by the human body, and the sensing signals being converted into a plurality of analog synthetic signals by the vital sign sensor;

an environmental sensor receiving environmental light of external ambient where the vital sign measurement system is located, and the environmental light being converted into a plurality of ambient digital indices by the environmental sensor;

an analog front-end sensor electrically connected with the vital sign sensor, the analog front-end sensor receiving and amplifying the analog synthetic signals of the vital sign sensor, and the analog synthetic signals being converted into biological digital signals; and

a processor module electrically connected with the excitation signal source, the environmental sensor and the analog front-end sensor, the processor module calculating an intensity of the environmental light of the external ambient on the basis of the ambient digital indices, and the processor module sending an adjustment instruction to the analog front-end sensor to adjust a sampling frequency of the analog front-end sensor according as the environmental sensor senses an intensity change of the environmental light of the external ambient, the processor module proceeding an estimation and a measurement of vital signs according as the processor module receives the biological digital signals converted by the analog front-end sensor of which the sampling frequency is adjusted.

2. The vital sign measurement system as claimed in claim 1, wherein the excitation signals are light signals, the sensing signals are light sensing signals, the vital sign sensor includes a light sensor, the light sensor collects the light sensing signals reflected by the human body.

3. The vital sign measurement system as claimed in claim 2, wherein when the intensity of the environmental light becomes larger, the sampling frequency of the analog front-end sensor sampling the analog synthetic signals of the light sensor is more than 100 Hz, when the intensity of the environmental light becomes smaller, the sampling frequency of the analog front-end sensor sampling the analog synthetic signals of the light sensor is less than 100 Hz.

4. The vital sign measurement system as claimed in claim 3, wherein the environmental sensor includes an ultraviolet sensor, the environmental light of the external ambient is ultraviolet rays, the ultraviolet sensor collects the ultraviolet rays, when intensities of the ultraviolet rays become larger, the sampling frequency of the analog front-end sensor sampling the analog synthetic signals of the light sensor is more than 100 Hz, when the intensities of the ultraviolet rays become smaller, the sampling frequency of the analog front-end sensor sampling the analog synthetic signals of the light sensor is less than 100 Hz.

5. The vital sign measurement system as claimed in claim 3, wherein the environmental sensor includes an ambient light sensor, the environmental light of the external ambient is ambient light, the ambient light sensor collects the ambient light, when an intensity of the ambient light becomes larger, the sampling frequency of the analog front-end sensor sampling the analog synthetic signals of the light sensor is more than 100 Hz, when the intensity of the ambient light becomes smaller, the sampling frequency of the analog front-end sensor sampling the analog synthetic signals of the light sensor is less than 100 Hz.

6. The vital sign measurement system as claimed in claim 1, wherein the excitation signals are biological electrical impulse signals, the sensing signals are biological sensing signals, the vital sign sensor includes a bio-impedance sensor, the bio-impedance sensor collects the biological sensing signals reflected by the human body.

7. The vital sign measurement system as claimed in claim 6, wherein when the intensity of the environmental light becomes larger, the sampling frequency of the analog front-end sensor sampling the analog synthetic signals of bio-impedance sensor is more than 0.2 Hz, when the intensity of the environmental light becomes smaller, the sampling frequency of the analog front-end sensor sampling the analog synthetic signals of bio-impedance sensor is less than 0.2 Hz.

8. The vital sign measurement system as claimed in claim 7, wherein the environmental sensor includes an ultraviolet sensor, the environmental light of the external ambient is ultraviolet rays, the ultraviolet sensor collects the ultraviolet rays, when intensities of the ultraviolet rays become larger, the sampling frequency of the analog front-end sensor sampling the analog synthetic signals of the bio-impedance sensor is more than 0.2 Hz, when the intensities of the ultraviolet rays become smaller, the sampling frequency of the analog front-end sensor sampling the analog synthetic signals of the bio-impedance sensor is less than 0.2 Hz.

9. The vital sign measurement system as claimed in claim 7, wherein the environmental sensor includes an ambient light sensor, the environmental light of the external ambient is ambient light, the ambient light sensor collects the ambient light, when an intensity of the ambient light becomes larger, the sampling frequency of the analog front-end sensor sampling the analog synthetic signals of the bio-impedance sensor is more than 0.2 Hz, when the intensity of the ambient light becomes smaller, the sampling frequency of the analog front-end sensor sampling the analog synthetic signals of the bio-impedance sensor is less than 0.2 Hz.

10. A vital sign measurement method of the vital sign measurement system which includes an excitation signal source, a vital sign sensor, an environmental sensor, an analog front-end sensor and a processor module, comprising the steps of:

the processor module controlling the excitation signal source to generate excitation signals, the excitation signals being transmitted to skin of the human body, and then the excitation signals being reflected by the human body to generate sensing signals;

the vital sign sensor receiving the sensing signals, and the sensing signals being converted into a plurality of analog synthetic signals by the vital sign sensor;

the environmental sensor receiving environmental light of external ambient where the vital sign measurement system is located, and the environmental light being converted into a plurality of ambient digital indices;

the analog front-end sensor receiving and amplifying the analog synthetic signals of the vital sign sensor, and the analog front-end sensor converting the analog synthetic signals into biological digital signals, the processor module calculating an intensity of the environmental light of the external ambient on the basis of the ambient digital indices, and the processor module sending an adjustment instruction to the analog front-end sensor to adjust a sampling frequency of the analog front-end sensor; and

the analog front-end sensor of which the sampling frequency is adjusted amplifying the analog synthetic signals and converting the analog synthetic signals into the biological digital signals, the processor module proceeding an estimation and a measurement of vital signs according as the processor module receives the biological digital signals converted by the analog front-end sensor of which the sampling frequency is adjusted.