CN103908262A - Device and method for physiological signal measurement - Google Patents
Device and method for physiological signal measurement Download PDFInfo
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- CN103908262A CN103908262A CN201210592216.2A CN201210592216A CN103908262A CN 103908262 A CN103908262 A CN 103908262A CN 201210592216 A CN201210592216 A CN 201210592216A CN 103908262 A CN103908262 A CN 103908262A
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Abstract
The invention relates to a device and method for physiological signal measurement. The device and method for physiological signal measurement can be applied to optical physiological measurement of at least two light sources. The method comprises front end signal processing, the signal amplitude of the at least two light sources reaches a specific proportion by utilizing strength adjustment of the light sources, the signal dynamic range is increased, and accordingly the signal noise ratio is improved.
Description
Technical field
The disclosure relates to a kind of physiological signal measuring apparatus and measuring method thereof, particularly the measuring device of blood oxygen concentration and measuring method thereof.
Background technology
Blood oxygen concentration value represents the oxygen containing saturation of haemachrome in blood, and therefore blood oxygen concentration value can represent that whether cardiopulmonary ability is normal.In respiratory circulatory system, after the oxygen in human body air amount, by the carbon dioxide exchange in alveolar in body and blood out, reach the running of health normal equilibrium.Whether the ability of transporting oxygen in blood comes from cardiac function power, so if heart or thoracic cavity function have situation, its health oxygen content of blood reduces naturally.The measurement of blood oxygen concentration is at present taking pulse blood oxygen concentration measurement method as main flow.
The signal quality of blood oxygen concentration measuring device significantly affects blood oxygen concentration measured value, and that signal quality and light source penetrate the energy size obtaining after physiological tissue is closely bound up.On measuring, the magnitude of energy that two light sources penetrate gained after physiological tissue can cause two signal magnitude differences very large because of different tissues or different tester, must carry out signal amplification with automatic gain amplifier, but, if one of them signal too hour, single automatic gain amplifier can occur cannot all be amplified to larger amplitude by these two groups of signals, causes dynamic range of signals limited.
For solving the problems referred to above of prior art, propose measuring device of the present disclosure and method, and disclosure technology not only can be applicable to blood oxygen concentration and measures, other optical physiologicals that also can be applicable at least two kinds of light sources are measured.
Summary of the invention
The disclosure relates to a kind of physiological signal measuring apparatus and measuring method thereof.
In the measurement of physiological signal, taking blood oxygen concentration as example, fixed drive current ratio is generally understood in the design of light source, therefore light signal likely can cause signal less because of individual variation, generally speaking, compared to infrared light, HONGGUANG to human body to penetrate effect poor, therefore can obtain lower signal, if can be under suitable energy of light source, reach the driving ratio of two energy of light source of the best, the amplitude of two groups of signals is approached, can make dynamic range of signals promote, improve signal noise ratio.
According to the disclosure, a kind of physiological signal measuring apparatus is proposed, comprise at least two kinds of light sources, at least one light source detection device, at least one light source drive, and signal processing circuit.
According to device of the present disclosure, wherein light source drive is under initialization period, according to these at least two kinds of light sources of other signal drivers of the signal in multiple at least two kinds of initializing signals and multiple at least two kinds of initializing signals, make this at least one light source detection device export accordingly multiple at least two kinds and receive a signal in signals and multiple at least two kinds of other signals that receive signals; Under measurement period, this at least one light source drive is according to the signal at least two kinds of task driven signals and these at least two kinds of light sources of other signal drivers of at least two kinds of task driven signals.
According to device of the present disclosure, wherein signal processing circuit selects to make a light source in these at least two kinds of light sources to start to enter the signal at least two kinds of candidate signals of saturation in these at least two kinds signals that receive in signals, and receive in these at least two kinds other signals of selecting at least two kinds of candidate signals in other signals of signals, the ratio (other signals of a signal/these at least two kinds of candidate signals in these at least two kinds of candidate signals) of the signal in these at least two kinds of candidate signals and other signals of these at least two kinds of candidate signals approaches default ratio, in the signal of this signal processing circuit in these at least two kinds of initializing signals, select the signal in these at least two kinds of task driven signals corresponding with a signal in these at least two kinds of candidate signals, and in other signals of these at least two kinds of initializing signals, select other signals of this at least two kind task driven signals corresponding with other signals of these at least two kinds of candidate signals.
According to the disclosure, a kind of physiological signal measuring apparatus is proposed, taking two kinds of light sources as example, disclosure device comprises the first light source, secondary light source, photodetector, light source drive and signal processing circuit.Light source drive, under initialization period, drives the first light source and secondary light source according to the first initializing signal and the second initializing signal, makes light source detection device export accordingly the first reception signal and second and receives signal.Under a measurement period, light source drive is according to the first task driven signal and the second task driven signal driver the first light source and secondary light source.Signal processing circuit provides the first initializing signal and the second initializing signal.Signal processing circuit selects corresponding the first light source to start to enter the first candidate signal of saturation in the first reception signal, and selects the second candidate signal in the second reception signal, and the ratio of the second candidate signal and the first candidate signal approaches default ratio.Signal processing circuit is selected the first task driven signal corresponding with the first candidate signal in the first initializing signal, and selects the second task driven signal corresponding with the second candidate signal in the second initializing signal.
According to device of the present disclosure, wherein at least one light source of these at least two kinds of light sources is black light light source, and the other light sources of these at least two kinds of light sources is visible light source, or at least one light source of these at least two kinds of light sources is visible light source, and the other light sources of these at least two kinds of light sources is black light light source, or these at least two kinds of light sources are visible light source, or these at least two kinds of light sources are black light light source.
According to device of the present disclosure, wherein this signal processing circuit comprises analog-digital converter, be converted to multiple digital signals in order to a signal and these at least two kinds other signals that receive signal that these at least two kinds are received in signal, and processor, in order to select a signal in these at least two kinds of candidate signals and other signals of these at least two kinds of candidate signals according to these digital signals, this processor is according to the automatic gain value of other these automatic gain control circuits of signal deciding of the signal in these at least two kinds of task driven signals and these at least two kinds of task driven signals.Again, this signal processing circuit is except analog-digital converter and processor, still can further comprise automatic gain control circuit, and amplifier, controlled this automatic gain control circuit, and these an at least two kinds signal and these at least two kinds other signals that receive signal that receive in signal are enlarged into multiple analogue signals.Moreover, this signal processing circuit sequentially increases progressively respectively a signal in these at least two kinds of initializing signals and other signals of these at least two kinds of initializing signals, or a signal in these at least two kinds of initializing signals and other signals of these at least two kinds of initializing signals are alternately provided.
According to device of the present disclosure, wherein the default ratio of other signals of the signal in these at least two kinds of candidate signals and these at least two kinds of candidate signals (other signals of a signal/these at least two kinds of candidate signals in these at least two kinds of candidate signals) can be approximately 0.5 to 2, be preferably approximately 0.8 to 1.2, be more preferred from approximately 1.
According to the disclosure, a kind of physiological signal measurements method is proposed, comprising: under initialization period, provide a signal in multiple at least two kinds of initializing signals and other signals of multiple at least two kinds of initializing signals; According at least two kinds of light sources of other signal drivers of the signal in these at least two kinds of initializing signals and these at least two kinds of initializing signals, make at least one light source detection device export accordingly multiple at least two kinds and receive a signal in signals and multiple at least two kinds of other signals that receive signals; In these at least two kinds signals that receive in signals, select to make a light source in these at least two kinds of light sources to start to enter the signal at least two kinds of candidate signals of saturation, and receiving other signals of selecting at least two kinds of candidate signals in other signals of signals in these at least two kinds, the ratio of the signal in these at least two kinds of candidate signals and other signals of these at least two kinds of candidate signals (other signals of a signal/these at least two kinds of candidate signals in these at least two kinds of candidate signals) approaches presets ratio; In a signal in these at least two kinds of initializing signals, select the signal at least two kinds of task driven signals corresponding with a signal in these at least two kinds of candidate signals, and in other signals of these at least two kinds of initializing signals other signals of selection at least two kind task driven signals corresponding with other signals of these at least two kinds of candidate signals; And under measurement period, according to these at least two kinds of light sources of other signal drivers of the signal in these at least two kinds of task driven signals and these at least two kinds of task driven signals.
According to the disclosure, a kind of physiological signal measurements method is proposed, taking two kinds of light sources as example, disclosure method comprises: under initialization period, provide the first initializing signal and the second initializing signal; Drive the first light source and secondary light source according to the first initializing signal and the second initializing signal, make light source detection device export accordingly the first reception signal and second and receive signal; In the first reception signal, select corresponding the first light source to start to enter the first candidate signal of saturation, and select the second candidate signal in the second reception signal, the ratio of the second candidate signal and the first candidate signal approaches default ratio; In the first initializing signal, select the first task driven signal corresponding with the first candidate signal, and in the second initializing signal, select the second task driven signal corresponding with the second candidate signal; And under measurement period, according to the first task driven signal and the second task driven signal driver the first light source and secondary light source.
According to method of the present disclosure, wherein at least one light source of these at least two kinds of light sources is black light light source, and the other light sources of these at least two kinds of light sources is visible light source, or at least one light source of these at least two kinds of light sources is visible light source, and the other light sources of these few two kinds of light sources is black light light source, or these at least two kinds of light sources are visible light source, or these at least two kinds of light sources are black light light source.
According to method of the present disclosure, wherein select this steps of other signals of a signal in these at least two kinds of candidate signals and these at least two kinds of candidate signals further to comprise these an at least two kinds signal and these at least two kinds other signals that receive signals that receive in signals are converted to multiple digital signals; And select a signal in these at least two kinds of candidate signals and other signals of these at least two kinds of candidate signals according to these digital signals, or wherein select this steps of other signals of a signal in these at least two kinds of candidate signals and these at least two kinds of candidate signals further to comprise these an at least two kinds signal and these at least two kinds other signals that receive signals that receive in signals are enlarged into multiple analogue signals; These analogue signals are converted to multiple digital signals; And select a signal in these at least two kinds of candidate signals and other signals of these at least two kinds of candidate signals according to these digital signals.
Again, according to method of the present disclosure, wherein the signal in these at least two kinds of initializing signals and other signals of these at least two kinds of initializing signals sequentially increase progressively respectively, or this provides step that a signal in these at least two kinds of initializing signals and other signals of these at least two kinds of initializing signals are alternately provided.
Moreover, according to method of the present disclosure, can further comprise other signal deciding automatic gain values according to the signal in these at least two kinds of task driven signals and these at least two kinds of task driven signals.
According to method of the present disclosure, wherein the default ratio of other signals of the signal in these at least two kinds of candidate signals and these at least two kinds of candidate signals (other signals of a signal/these at least two kinds of candidate signals in these at least two kinds of candidate signals) can be approximately 0.5 to 2, be preferably approximately 0.8 to 1.2, be more preferred from approximately 1.
According to the disclosure, physiological signal can comprise blood oxygen concentration, blood glucose, and carbon monoxide in blood, carbon dioxide in blood, oxidized heme, haemachrome, heart rate, breathing rate, body is moving, or body temperature etc.
For there is to better understanding above-mentioned and other aspect of the present disclosure, special embodiment below, and coordinate accompanying drawing, and be described in detail below, only these embodiment are as illustrative purposes only, non-for limiting to the disclosure.
Brief description of the drawings
Fig. 1 illustrates as the physiological signal measuring apparatus according to the first embodiment is in the schematic diagram of initialization period.
Fig. 2 illustrates the flow chart into a kind of physiological signal measurements method according to the first embodiment.
It is the sequential chart of the first initializing signal and the second initializing signal that Fig. 3 illustrates.
It is the sequential chart that the first reception signal and second receives signal that Fig. 4 illustrates.
Fig. 5 illustrates as the physiological signal measuring apparatus according to the first embodiment is in the schematic diagram of measurement period.
Fig. 6 illustrates as analog-digital converter is in the sequential chart of the digital signal of delay period, initial phase and measuring phases output.
Fig. 7 is the T3 part enlarged diagram of Fig. 6.
It is the ratio schematic diagram that the second reception signal and first receives signal that Fig. 8 illustrates.
Fig. 9 illustrates as the physiological signal measuring apparatus according to the second embodiment is in the schematic diagram of initialization period.
[main element symbol description]
1: physiological signal measuring apparatus
2: physiological tissue
11: the first light sources
12: secondary light source
13: photodetector
14: light source drive
21～25: step
15a, 15b: signal processing circuit
151: analog-digital converter
152: processor
153: automatic gain control circuit
154: amplifier
DS: digital signal
AS: analogue signal
RT (1)～RT (n): the first initializing signal
IRT (1)～IRT (n): the second initializing signal
RR (1)～RR (n): first receives signal
IRR (1)～IRR (n): second receives signal
T1: postpone the period
T2: initial phase
T3: measuring phases
Detailed description of the invention
The first embodiment
Please refer to Fig. 1, Fig. 1 illustrates as the physiological signal measuring apparatus according to the first embodiment is in the schematic diagram of initialization period.Physiological signal measuring apparatus 1 is for example blood oxygen concentration measuring device, and physiological signal measuring apparatus 1 at least comprises the first light source 11, secondary light source 12, photodetector 13, light source drive 14 and signal processing circuit 15a.Signal processing circuit 15a at least comprises analog-digital converter 151 and processor 152, and processor 152 is for example field programmable gate array (Field Programmable Gate Array, FPGA).The first light source 11 is for example black light light source, and secondary light source is for example visible light source.Or the first light source 11 is for example visible light source, and secondary light source 12 is for example black light light source.Aforementioned invisible light source is for example infrarede emitting diode, and visible light source is for example red light-emitting diode.For convenience of description, the first light source 11 of the first embodiment is with visible light source, for example, for HONGGUANG is example explanation; Secondary light source 12 is with black light light source, for example, for infrared light is example explanation.Physiological signal can comprise blood oxygen concentration, blood glucose, and carbon monoxide in blood, carbon dioxide in blood, oxidized heme, haemachrome, heart rate, breathing rate, body is moving, or body temperature etc.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, Fig. 2 illustrates the flow chart into a kind of physiological signal measurements method according to the first embodiment, it is the sequential chart of the first initializing signal and the second initializing signal that Fig. 3 illustrates, it is the sequential chart that the first reception signal and second receives signal that Fig. 4 illustrates, and Fig. 5 illustrates as the physiological signal measuring apparatus according to the first embodiment is in the schematic diagram of measurement period.Physiological signal measurements method is applicable to physiological signal measuring apparatus 1, and comprises the steps.
First,, under initialization period, provide a signal in multiple at least two kinds of initializing signals and other signals of multiple at least two kinds of initializing signals.Wherein the signal at least two kinds of initializing signals can be first initializing signal RT (1)～RT (n), and other signals of at least two kinds of initializing signals can be second initializing signal IRT (1)～IRT (n).As shown in step 21, signal processing circuit 15a, under initialization period, provides first initializing signal RT (1)～RT (n) and second initializing signal IRT (1)～IRT (n).First initializing signal RT (1)～RT (n) and second initializing signal IRT (1)～IRT (n) for example sequentially increase progressively, and first initializing signal RT (1)～RT (n) equals respectively second initializing signal IRT (1)～IRT (n).Signal processing circuit 15a for example alternately provides first initializing signal RT (1)～RT (n) and second initializing signal IRT (1)～IRT (n).
Then, according at least two kinds of light sources of other signal drivers of the signal in multiple at least two kinds of initializing signals and multiple at least two kinds of initializing signals, make at least one light source detection device export accordingly multiple at least two kinds and receive a signal in signals and multiple at least two kinds of other signals that receive signals.Wherein at least two kinds of light sources can be the first light source 11 and secondary light source 12.At least two kinds of signals that receive in signal can be first reception signal RR (1)～RR (n), and at least two kinds of other signals that receive signal can be and second reception signal IRR (1)～IRR (n).As shown in step 22, light source drive 14 drives one first light source 11 and secondary light source 12 according to first initializing signal RT (1)～RT (n) and second initializing signal IRT (1)～IRT (n), makes light source detection device 13 export accordingly first reception signal RR (1)～RR (n) and second and receives signal IRR (1)～IRR (n).It should be noted that, the light penetration physiological tissue 2 that aforementioned the first light source 11 and secondary light source 12 produce is to photodetector 13.Or the light that the first light source 11 and secondary light source 12 produce reflexes to photodetector 13 through physiological tissue 2.
Then, in multiple at least two kinds of signals that receive in signals, select to make a light source at least two kinds of light sources to start to enter the signal at least two kinds of candidate signals of saturation, and receive other signals of selecting at least two kinds of candidate signals in other signals of signals in multiple at least two kinds, wherein the signal at least two kinds of candidate signals approaches default ratio with the ratio (other signals of signal/at least two kind of the candidate signal at least two kinds of candidate signals) of other signals of at least two kinds of candidate signals.Wherein, the signal at least two kinds of candidate signals can be the first candidate signal, and other signals of at least two kinds of candidate signals can be the second candidate signal.As shown in step 23, signal processing circuit 15a selects corresponding the first light source 11 to start to enter first of saturation and receives signal RR (i) as the first candidate signal in first reception signal RR (1)～RR (n), and in second reception signal IRR (1)～IRR (n), selects second to receive signal IRR (i-1) as the second candidate signal.The ratio of the second candidate signal IRR (i-1) and the first candidate signal RR (i) approaches a default ratio most, and default proportionality is as being 0.5 to 2.In addition, default ratio also can design 0.8 to 1.2 in other embodiments.
For convenience of description, the default ratio of the first embodiment is taking 1 as example explanation.Because having made the first light source 11, the first initializing signal RT (i) starts to enter saturation, also can not increase even if therefore light source drive 14 drives the first light source 11, the first to receive signal RR (i+1)～RR (n) according to first initializing signal RT (i+1)～RT (n) after increasing progressively thereupon.And in the time establishing ratio and be 1, the second candidate signal approaches the first candidate signal most.That is to say, the second amplitude that receives signal IRR (i-1) approaches the amplitude of the first reception signal RR (i) most.
Furthermore, first reception signal RR (1)～RR (n) and second is received signal IRR by analog-digital converter 151, and (1)～IRR (n) is converted to digital signal DS, and processor 152 is selected the first candidate signal and the second candidate signal according to digital signal DS.
Then, in a signal in multiple at least two kinds of initializing signals, select the signal at least two kinds of task driven signals corresponding with a signal at least two kinds of candidate signals, and in other signals of multiple at least two kinds of initializing signals other signals of selection at least two kind task driven signals corresponding with other signals of at least two kinds of candidate signals.Wherein, the signal at least two kinds of task driven signals can be the first task driven signal, and other signals of at least two kinds of task driven signals can be the second task driven signal.As shown in step 24, signal processing circuit 15a selects the first initializing signal RT (i) corresponding with the first candidate signal as the first task driven signal in first initializing signal RT (1)～RT (n), and in second initializing signal IRT (1)～IRT (n), selects the second initializing signal IRT (i-1) corresponding with the second candidate signal as the second task driven signal.
Finally, under measurement period, according at least two kinds of light sources of other signal drivers of the signal at least two kinds of task driven signals and at least two kinds of task driven signals.As shown in step 25, signal processing circuit 15a is under measurement period, according to the first task driven signal and the second task driven signal driver the first light source and secondary light source.Due to before measurement period, signal processing circuit 15a has found out the first task driven signal and the second task driven signal of the most applicable driving the first light source 11 and secondary light source 12, and therefore the follow-up dynamic range of analog-digital converter 151 of avoiding is limited.
Referring to Fig. 1, Fig. 2, Fig. 6, Fig. 7 and Fig. 8, Fig. 6 illustrates as analog-digital converter is in the sequential chart of the digital signal of delay period, initial phase and measuring phases output, Fig. 7 is the T3 part enlarged diagram of Fig. 6, and it is the ratio schematic diagram that the second reception signal and first receives signal that Fig. 8 illustrates.Analog-digital converter 151 is sequentially in the digital signal DS that postpones period T1, initial phase T2 and measuring phases T3 output.After physiological signal measuring apparatus 1 start, after delayed period T1, enter the state of being ready for.For finding out the first suitable task driven signal and the second task driven signal, physiological signal measuring apparatus 1, before measuring phases T3, is carried out above-mentioned steps 21 to 24 prior to initial phase T2.And correct in order further to guarantee the first found out task driven signal and the second task driven signal, step 21 can be repeated to carry out for several times to 24.In Fig. 6 illustrates to repeat 3 times as example explanation.
Illustrate and can find out at Fig. 7, physiological signal measuring apparatus 1 is in the time of measuring phases T3, and the amplitude of the digital signal DS that analog-digital converter 151 is exported all reaches unanimity.That is to say, processor 152 is during according to the first task driven signal and second task driven signal driver the first light source 11 and secondary light source 12, and the signal amplitude that corresponding the first task driven signal of photodetector 13 and the second task driven signal are exported also can reach unanimity.When physiological signal measuring apparatus 1 is during in measuring phases T3, the signal ratio that corresponding the first light source of photodetector 13 and secondary light source are exported will illustrate as Fig. 8, and it approximately maintains between 1.07～1.14.Thus, can avoid the dynamic range of analog-digital converter 151 limited.
The second embodiment
Please refer to Fig. 1 and Fig. 9, Fig. 9 illustrates as the physiological signal measuring apparatus according to the second embodiment is in the schematic diagram of initialization period.The second embodiment and the first embodiment main difference part are that physiological signal measuring apparatus 3 replaces the signal processing circuit 15a of the first embodiment with signal processing circuit 15b.Signal processing circuit 15b, except analog-digital converter 151 and processor 152, also comprises automatic gain control circuit 153 and amplifier 154.The controlled automatic gain control circuit 153 of amplifier 154, and first reception signal RR (1)～RR (n) and second reception signal IRR (1)～IRR (n) are enlarged into analogue signal AS.Analogue signal AS is converted to digital signal DS by analog-digital converter 151.Processor 152 is selected the first candidate signal and the second candidate signal according to digital signal DS.Processor 152 is selected the first task driven signal and the second task driven signal according to the first candidate signal and the second candidate signal.Subsequent treatment device 152 is according to the automatic gain value of the first task driven signal and the second task driven signal deciding automatic gain control circuit 153.
In sum, although the disclosure with embodiment openly as above, so it is not in order to limit the disclosure.Disclosure person of ordinary skill in the field, not departing from spirit and scope of the present disclosure, when being used for a variety of modifications and variations.Therefore, protection domain of the present disclosure is when being as the criterion depending on appended claims confining spectrum.
Claims (30)
1. a physiological signal measurements method, comprising:
Under initialization period, provide a signal in multiple at least two kinds of initializing signals and other signals of multiple at least two kinds of initializing signals;
According at least two kinds of light sources of other signal drivers of the signal in these at least two kinds of initializing signals and these at least two kinds of initializing signals, make at least one light source detection device export accordingly multiple at least two kinds and receive a signal in signals and multiple at least two kinds of other signals that receive signals;
In these at least two kinds signals that receive in signals, select to make a light source in these at least two kinds of light sources to start to enter the signal at least two kinds of candidate signals of saturation, and receiving other signals of selecting at least two kinds of candidate signals in other signals of signals in these at least two kinds, the ratio of the signal in these at least two kinds of candidate signals and other signals of these at least two kinds of candidate signals approaches presets ratio;
In a signal in these at least two kinds of initializing signals, select the signal at least two kinds of task driven signals corresponding with a signal in these at least two kinds of candidate signals, and in other signals of these at least two kinds of initializing signals other signals of selection at least two kind task driven signals corresponding with other signals of these at least two kinds of candidate signals; And
Under measurement period, according to these at least two kinds of light sources of other signal drivers of the signal in these at least two kinds of task driven signals and these at least two kinds of task driven signals.
2. physiological signal measurements method as claimed in claim 1, wherein select this step of other signals of a signal in these at least two kinds of candidate signals and these at least two kinds of candidate signals also to comprise:
A these at least two kinds signal and these at least two kinds other signals that receive signal that receive in signal are converted to multiple digital signals; And
Select a signal in these at least two kinds of candidate signals and other signals of these at least two kinds of candidate signals according to these digital signals.
3. physiological signal measurements method as claimed in claim 1, wherein select this step of other signals of a signal in these at least two kinds of candidate signals and these at least two kinds of candidate signals also to comprise:
A these at least two kinds signal and these at least two kinds other signals that receive signal that receive in signal are enlarged into multiple analogue signals;
These analogue signals are converted to multiple digital signals; And
Select a signal in these at least two kinds of candidate signals and other signals of these at least two kinds of candidate signals according to these digital signals.
4. physiological signal measurements method as claimed in claim 1, also comprises:
According to other signal deciding automatic gain values of the signal in these at least two kinds of task driven signals and these at least two kinds of task driven signals.
5. physiological signal measurements method as claimed in claim 1, wherein the signal in these at least two kinds of initializing signals and other signals of these at least two kinds of initializing signals sequentially increase progressively respectively.
6. physiological signal measurements method as claimed in claim 1, wherein this default ratio is 0.5 to 2.
7. physiological signal measurements method as claimed in claim 1, wherein this default ratio is 0.8 to 1.2.
8. physiological signal measurements method as claimed in claim 1, wherein this default ratio is 1.
9. physiological signal measurements method as claimed in claim 1, wherein this provides step that a signal in these at least two kinds of initializing signals and other signals of these at least two kinds of initializing signals are alternately provided.
10. physiological signal measurements method as claimed in claim 1, wherein at least one light source of these at least two kinds of light sources is black light light source, and the other light sources of these at least two kinds of light sources is visible light source.
11. physiological signal measurements methods as claimed in claim 1, wherein at least one light source of these at least two kinds of light sources is visible light source, and the other light sources of these at least two kinds of light sources is black light light source.
12. physiological signal measurements methods as claimed in claim 1, wherein these at least two kinds of light sources are visible light source.
13. physiological signal measurements methods as claimed in claim 1, wherein these at least two kinds of light sources are black light light source.
14. physiological signal measurements methods as claimed in claim 1, wherein these at least two kinds of light sources are two kinds of light sources, and wherein one is HONGGUANG, and another kind is infrared light.
15. the physiological signal measurements method as described in as arbitrary in claim 1 to 14, wherein this physiological signal comprises blood oxygen concentration, blood glucose, and carbon monoxide in blood, carbon dioxide in blood, oxidized heme, haemachrome, heart rate, breathing rate, body is moving, or body temperature.
16. 1 kinds of physiological signal measuring apparatus, comprising:
At least two kinds of light sources;
At least one light source detection device;
At least one light source drive, be used under initialization period, according to these at least two kinds of light sources of other signal drivers of the signal in multiple at least two kinds of initializing signals and multiple at least two kinds of initializing signals, make this at least one light source detection device export accordingly multiple at least two kinds and receive a signal in signals and multiple at least two kinds of other signals that receive signals, under measurement period, this at least one light source drive is according to the signal at least two kinds of task driven signals and these at least two kinds of light sources of other signal drivers of at least two kinds of task driven signals;
Signal processing circuit, in order to a signal in these at least two kinds of initializing signals and other signals of these at least two kinds of initializing signals to be provided, this signal processing circuit selects to make the light source in these at least two kinds of light sources to start to enter the signal at least two kinds of candidate signals of saturation in these at least two kinds signals that receive in signals, and receive in these at least two kinds other signals of selecting at least two kinds of candidate signals in other signals of signals, the ratio of the signal in these at least two kinds of candidate signals and other signals of these at least two kinds of candidate signals approaches default ratio, in the signal of this signal processing circuit in these at least two kinds of initializing signals, select the signal in these at least two kinds of task driven signals corresponding with a signal in these at least two kinds of candidate signals, and in other signals of these at least two kinds of initializing signals, select other signals of this at least two kind task driven signals corresponding with other signals of these at least two kinds of candidate signals.
17. physiological signal measuring apparatus as claimed in claim 16, wherein this signal processing circuit comprises:
Analog-digital converter, is converted to multiple digital signals in order to a signal and these at least two kinds other signals that receive signal that these at least two kinds are received in signal; And
Processor, in order to select a signal in these at least two kinds of candidate signals and other signals of these at least two kinds of candidate signals according to these digital signals.
18. physiological signal measuring apparatus as claimed in claim 16, wherein this signal processing circuit comprises:
Automatic gain control circuit;
Amplifier, controlled this automatic gain control circuit, and these an at least two kinds signal and these at least two kinds other signals that receive signal that receive in signal are enlarged into multiple analogue signals;
Analog-digital converter, in order to be converted to multiple digital signals by these analogue signals; And
Processor, in order to select a signal in these at least two kinds of candidate signals and other signals of these at least two kinds of candidate signals according to these digital signals.
19. physiological signal measuring apparatus as claimed in claim 18, wherein this processor is according to the automatic gain value of other these automatic gain control circuits of signal deciding of the signal in these at least two kinds of task driven signals and these at least two kinds of task driven signals.
20. physiological signal measuring apparatus as claimed in claim 16, wherein this signal processing circuit sequentially increases progressively respectively a signal in these at least two kinds of initializing signals and other signals of these at least two kinds of initializing signals.
21. physiological signal measuring apparatus as claimed in claim 16, wherein this default ratio is 0.5 to 2.
22. physiological signal measuring apparatus as claimed in claim 16, wherein this default ratio is 0.8 to 1.2.
23. physiological signal measuring apparatus as claimed in claim 16, wherein this default ratio is 1.
24. physiological signal measuring apparatus as claimed in claim 16, wherein this signal processing circuit alternately provides a signal in these at least two kinds of initializing signals and other signals of these at least two kinds of initializing signals.
25. physiological signal measuring apparatus as claimed in claim 16, wherein at least one light source of these at least two kinds of light sources is black light light source, and the other light sources of these at least two kinds of light sources is visible light source.
26. physiological signal measuring apparatus as claimed in claim 16, wherein this is at least
At least one light source of two kinds of light sources is visible light source, and the other light sources of these few two kinds of light sources is black light light source.
27. physiological signal measuring apparatus as claimed in claim 16, wherein these at least two kinds of light sources are visible light source.
28. physiological signal measuring apparatus as claimed in claim 16, wherein these at least two kinds of light sources are black light light source.
29. physiological signal measuring apparatus as claimed in claim 16, wherein this is at least
Two kinds of light sources are two kinds of light sources, and wherein one is HONGGUANG, and another kind is infrared light.
30. the physiological signal measuring apparatus as described in as arbitrary in claim 16 to 29, wherein this physiological signal comprises blood oxygen concentration, blood glucose, and carbon monoxide in blood, carbon dioxide in blood, oxidized heme, haemachrome, heart rate, breathing rate, body is moving, or body temperature.
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