Signal obtaining method and system

1. A system for monitoring a physiological signal of a subject, comprising:

a computer-readable storage medium storing a set of instructions for processing data;

at least one processor in communication with the computer-readable storage medium, wherein when executing the set of instructions, the at least one processor is directed to:

direct a transmitter to transmit a beam of light to the subject;

receive a first signal collected by a first receiver according to a first receiving parameter of the first receiver, the first signal being reflected by the subject in response to the beam of light and at least comprising a photoplethysmograph (PPG) signal relating to the subject and a moving/vibrating signal relating to the subject, wherein the first receiving parameter is used to set a first sensitivity of light intensity of the first receiver and includes at least one of a first resistance, a first current, or a first voltage;

receive a second signal collected by a second receiver according to a second receiving parameter of the second receiver, the second signal being reflected by the subject in response to the beam of light and at least comprising the moving/vibrating signal relating to the subject, wherein the second receiving parameter is used to set a second sensitivity of light intensity of the second receiver and includes at least one of a second resistance, a second current, or a second voltage, wherein

the first receiving parameter of the first receiver is different from the second receiving parameter of the second receiver; and

the first sensitivity of light intensity of the first receiver is different from the second sensitivity of light intensity of the second receiver;

set a correlation coefficient based on the first receiving parameter of the first receiver or the second receiving parameter of the second receiver;

identify, according to a signal processing technique, the PPG signal of the subject in the first signal by removing the moving/vibrating signal from the first signal based on the second signal and the correlation coefficient;

monitor a physiological signal of the subject based on the PPG signal; and

transmit, via a network, a monitoring result to a third party associated with the subject, the third party including at least one of a hospital, a nursing facility, or a member associated with the subject.

2. The system of claim 1 , wherein a spectrum of the beam of light includes at least one of a visible light spectrum, an infrared light spectrum, or a far infrared light spectrum.

3. The system of claim 1 , wherein to identify, according to the signal processing technique, the PPG signal of the subject in the first signal by removing the moving/vibrating signal from the first signal based on the second signal and the correlation coefficient, the at least one processor is further directed to:

perform a normalization on the first signal and the second signal; and

identify, according to the signal processing technique, the PPG signal of the subject in the first signal by removing the moving/vibrating signal from a normalized first signal based on a normalized second signal.

4. The system of claim 1 , wherein the correlation coefficient is associated with a type of the transmitter.

5. The system of claim 1 , wherein the at least one processor is further directed to:

output the physiological signal of the subject to a displaying device.

6. The system of claim 5 , wherein the at least one processor is further directed to:

instruct the displaying device to display the physiological signal of the subject in a digital form, a waveform form, an analog waveform form, a symbol form, a code form, a voice form, a video form, or an image form.

7. A method for monitoring a physiological signal of a subject implemented on a computing device having at least one processor, at least one computer-readable storage medium, and a communication platform connected to a network, the method comprising:

directing a transmitter to transmit a beam of light to the subject;

receiving a first signal collected by a first receiver according to a first receiving parameter of the first receiver, the first signal being reflected by the subject in response to the beam of light and at least comprising a photoplethysmograph (PPG) signal relating to the subject and a moving/vibrating signal relating to the subject, wherein the first receiving parameter is used to set a first sensitivity of light intensity of the first receiver and includes at least one of a first resistance, a first current, or a first voltage;

receiving a second signal collected by a second receiver according to a second receiving parameter of the second receiver, the second signal being reflected by the subject in response to the beam of light and at least comprising the moving/vibrating signal relating to the subject, wherein the second receiving parameter is used to set a second sensitivity of light intensity of the second receiver and includes at least one of a second resistance, a second current, or a second voltage, wherein

the first receiving parameter of the first receiver is different from the second receiving parameter of the second receiver; and

the first sensitivity of light intensity of the first receiver is different from the second sensitivity of light intensity of the second receiver;

setting a correlation coefficient based on the first receiving parameter of the first receiver or the second receiving parameter of the second receiver;

identifying, according to a signal processing technique, the PPG signal of the subject in the first signal by removing the moving/vibrating signal from the first signal based on the second signal and the correlation coefficient;

monitoring a physiological signal of the subject based on the PPG signal; and

transmitting, via the network, a monitoring result to a third party associated with the subject, the third party including at least one of a hospital, a nursing facility, or a member associated with the subject.

8. The method of claim 7 , wherein a spectrum of the beam of light includes at least one of a visible light spectrum, an infrared light spectrum, or a far infrared light spectrum.

9. The method of claim 7 , wherein the identifying, according to the signal processing technique, the PPG signal of the subject in the first signal by removing the moving/vibrating signal from the first signal based on the second signal and the correlation coefficient includes:

performing a normalization on the first signal and the second signal; and

identifying, according to the signal processing technique, the PPG signal of the subject in the first signal by removing the moving/vibrating signal from a normalized first signal based on a normalized second signal.

10. The method of claim 7 , wherein the correlation coefficient is associated with a type of the transmitter.

11. The method of claim 7 , wherein the method further includes:

outputting the physiological signal of the subject to a displaying device.

12. The method of claim 7 , wherein the method further includes:

instructing the displaying device to display the physiological signal of the subject in a digital form, a waveform form, an analog waveform form, a symbol form, a code form, a voice form, a video form, or an image form.

13. A non-transitory computer readable medium comprising a set of instructions, wherein when executed by at least one processor, the set of instructions cause the at least one processor to effectuate a method comprising:

directing a transmitter to transmit a beam of light to a subject;

receiving a first signal collected by a first receiver according to a first receiving parameter of the first receiver, the first signal being reflected by the subject in response to the beam of light and at least comprising a photoplethysmograph (PPG) signal relating to the subject and a moving/vibrating signal relating to the subject, wherein the first receiving parameter is used to set a first sensitivity of light intensity of the first receiver and includes at least one of a first resistance, a first current, or a first voltage;

receiving a second signal collected by a second receiver according to a second receiving parameter of the second receiver, the second signal being reflected by the subject in response to the beam of light and at least comprising the moving/vibrating signal relating to the subject, wherein the second receiving parameter is used to set a second sensitivity of light intensity of the second receiver and includes at least one of a second resistance, a second current, or a second voltage, wherein

the first receiving parameter of the first receiver is different from the second receiving parameter of the second receiver; and

the first sensitivity of light intensity of the first receiver is different from the second sensitivity of light intensity of the second receiver;

setting a correlation coefficient based on the first receiving parameter of the first receiver or the second receiving parameter of the second receiver;

identifying, according to a signal processing technique, the PPG signal of the subject in the first signal by removing the moving/vibrating signal from the first signal based on the second signal and the correlation coefficient;

monitoring a physiological signal of the subject based on the PPG signal; and

transmitting, via a network, a monitoring result to a third party associated with the subject, the third party including at least one of a hospital, a nursing facility, or a member associated with the subject.

14. The non-transitory computer readable medium of claim 13 , wherein a spectrum of the beam of light includes at least one of a visible light spectrum, an infrared light spectrum, or a far infrared light spectrum.

15. The non-transitory computer readable medium of claim 13 , wherein the identifying, according to the signal processing technique, the PPG signal of the subject in the first signal by removing the moving/vibrating signal from the first signal based on the second signal and the correlation coefficient, includes:

performing a normalization on the first signal and the second signal; and

identifying, according to the signal processing technique, the PPG signal of the subject in the first signal by removing the moving/vibrating signal from a normalized first signal based on a normalized second signal.

16. The non-transitory computer readable medium of claim 13 , wherein the correlation coefficient is associated with a type of the transmitter.

17. The non-transitory computer readable medium of claim 13 , wherein when executed by the at least one processor, the set of instructions cause the at least one processor to effectuate the method further comprising:

outputting the physiological signal of the subject to a displaying device.

18. The non-transitory computer readable medium of claim 13 , wherein when executed by the at least one processor, the set of instructions cause the at least one processor to effectuate the method further comprising:

instructing the displaying device to display the physiological signal of the subject in a digital form, a waveform form, an analog waveform form, a symbol form, a code form, a voice form, a video form, or an image form.