CN103211586A - Optical-detection-based noninvasive pressure signal acquisition method and device - Google Patents
Optical-detection-based noninvasive pressure signal acquisition method and device Download PDFInfo
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- CN103211586A CN103211586A CN201310126131XA CN201310126131A CN103211586A CN 103211586 A CN103211586 A CN 103211586A CN 201310126131X A CN201310126131X A CN 201310126131XA CN 201310126131 A CN201310126131 A CN 201310126131A CN 103211586 A CN103211586 A CN 103211586A
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Abstract
The invention relates to the field of biomedical signal processing and particularly relates to an optical-detection-based noninvasive pressure signal acquisition method and device. According to the method and the device, provided by the invention, red or infrared light signal detection is carried out through a blood oxygen probe when cuff pressure signals are acquired during normal noninvasive blood pressure measurement, and pulse oscillation signals of red or infrared light signals can be obtained; and through judging the quality of the signals, the pulse oscillation information of the pressure signals can be verified, and interference can be identified to the maximum, so that the measurement error caused by motion interference is effectively avoided.
Description
Technical field
The present invention relates to the processing of biomedical signals field, relate in particular to a kind of method and apparatus of pressing signals collecting based on the noinvasive of optical detection
Background technology
At medical detection range, Wave data has great significance, by gathering the Wave data that characterizes physiological signal in real time, for follow-up date processing, analysis and calculating provide strong support.
At present, non-invasive blood pressure measuring technique great majority adopt succusion.This method is that inflation reaches the purpose of oppressing blood vessel with certain pressure in cuff, detects the wave of oscillation of gas in the cuff then by pressure transducer.These waves of oscillation originate from the vibration of arterial blood tube wall.Wave of oscillation signal is a kind of important intermediate value signal, and this wave of oscillation and corresponding cuff pressure and arterial wall systolic pressure, diastolic pressure, mean pressure thereof all have certain functional relation.By the wave of oscillation being amplified, after the filtering, wave of oscillation envelope is detected, the certain criterion of reuse is judged the corresponding relation of envelope and systolic pressure, diastolic pressure, calculates systolic pressure, mean pressure and diastolic pressure result then.
When in measuring process, especially in detecting the process of the wave of oscillation, if there is external interference, for example jolting in the transport process, interference such as extruding to cuff that arm motion causes can make other interference waveforms that produce in the cuff except that the wave of oscillation.These interference waveforms are level and smooth by gas in the cuff, all are difficult to distinguish with the normal wave of oscillation in the waveform characteristic of time domain and the frequency distribution of frequency domain.
And prior art adopts Digital Signal Processing filtering commonly used usually to these interference waveforms and normal waveform, methods such as characteristic point identification, when external interference is suitable with amplitude with normal pulse vibration wave frequency, the external interference and the normal pulse wave of oscillation can be superimposed, method by filtering and characteristic point identification all can't be removed disturbing, this belt transect the interferential wave of oscillation and is used in blood pressure calculating, makes whole measurement result produce significant errors.
Therefore, there is defective in prior art
Summary of the invention
For overcoming above-mentioned defective, purpose of the present invention promptly is a kind of method and apparatus of pressing signals collecting based on the noinvasive of optical detection.
The objective of the invention is to be achieved through the following technical solutions:
Press the method for signals collecting based on the noinvasive of optical detection, comprise the steps:
Step 1 is gathered the cuff pressure signal of scheduled duration and is gathered HONGGUANG or infrared signal by blood oxygen probe simultaneously;
Step 2 is carried out described cuff pressure signal analog digital conversion and is isolated the first pulse oscillator signal;
Step 3 judges whether the described first pulse oscillator signal satisfies default prescription, as satisfying, then enters step 4, as not satisfying, then returns step 1;
Step 4 is carried out HONGGUANG or the infrared signal of gathering simultaneously analog digital conversion and is isolated the second pulse oscillator signal;
Step 5 judges whether the described second pulse oscillator signal satisfies default prescription, as satisfying, then enters step 6, as not satisfying, then returns step 1;
Step 6 is with described first pulse oscillator signal output.
Further, comprise also after the described step 1 that described cuff pressure signal is carried out signal of telecommunication conditioning and the HONGGUANG that will gather simultaneously or infrared signal carries out the step that the signal of telecommunication is nursed one's health.
Further, also comprise before the step of isolating the first pulse oscillator signal described in the step 2 the cuff pressure digital signal after the analog digital conversion is carried out pretreated step.
Further, also comprise before the step of isolating the second pulse oscillator signal described in the step 4 HONGGUANG after the analog digital conversion or infrared light digital signal are carried out pretreated step.
Further, the step of isolating the second pulse oscillator signal described in the step 4 also comprises the step with described second pulse oscillator signal and the described first pulse oscillator signal time unifying afterwards.
Further, also comprise after the described step 5 judge the second pulse oscillator signal whether with the first pulse oscillator signal step of variation synchronously.
Press the device of signals collecting based on the noinvasive of optical detection, comprising:
Cuff;
The cuff pressure acquisition module is connected with described cuff, is used to gather the cuff pressure signal of scheduled duration;
The first pulse oscillator signal separation module is connected with described cuff pressure acquisition module, is used for described cuff pressure signal is carried out analog digital conversion and isolates the first pulse oscillator signal;
The first signal quality judge module is connected with the cuff pressure acquisition module with the described first pulse oscillator signal separation module, is used to judge whether the described first pulse oscillator signal satisfies default prescription;
Blood oxygen probe;
HONGGUANG or infrared light acquisition module are connected with the first signal quality judge module with described blood oxygen probe, are used for gathering HONGGUANG or infrared signal by blood oxygen probe in the cuff pressure signal of gathering scheduled duration;
The second pulse oscillator signal separation module is connected with HONGGUANG or infrared light acquisition module with the described first signal quality judge module, and the HONGGUANG or the infrared signal that are used for gathering simultaneously carry out analog digital conversion and isolate the second pulse oscillator signal;
Secondary signal quality judge module is connected with HONGGUANG or infrared light acquisition module with the described second pulse oscillator signal separation module 307, cuff pressure acquisition module, is used to judge whether the described second pulse oscillator signal satisfies default prescription;
The first pulse oscillator signal output module is connected with described secondary signal quality judge module, is used for described first pulse oscillator signal output.
Further, described noinvasive based on optical detection is pressed the device of signals collecting, also comprises:
Cuff pressure signal condition module is connected with described cuff pressure acquisition module, is used for described cuff pressure signal is carried out signal of telecommunication conditioning;
The cuff pressure signal pre-processing module is connected with described cuff pressure acquisition module, is used for described cuff pressure signal is carried out pretreatment.
Further, described noinvasive based on optical detection is pressed the device of signals collecting, also comprises:
HONGGUANG or infrared signal conditioning module are connected with described HONGGUANG or infrared light acquisition module, and the HONGGUANG or the infrared signal that are used for gathering simultaneously carry out signal of telecommunication conditioning;
HONGGUANG or infrared light pretreatment module are connected with described HONGGUANG or infrared light acquisition module, are used for described HONGGUANG or infrared signal are carried out pretreatment.
Further, described noinvasive based on optical detection is pressed the device of signals collecting, also comprises:
The time unifying module is connected with the described second pulse oscillator signal separation module, is used for described second pulse oscillator signal and the described first pulse oscillator signal time unifying;
The synchronous judge module of signal is connected with described secondary signal quality judge module, is used to judge whether the second pulse oscillator signal changes synchronously with the first pulse oscillator signal.
In carrying out the NIBP measuring process, when jolting in patient's arm motion or the transport process, arm muscle or other article can push the NIBP cuff, and then generation interfering signal, influence searching of pulse wave signal, even influence the NIBP measurement, make measurement result depart from normal value.When interfering signal arrives to a certain degree greatly, when it takes place relatively frequently, only be difficult to distinguish and filtering interference signals by traditional signal processing.
Technical scheme provided by the present invention, when non-invasive blood pressure is normally measured collection cuff pressure signal, carry out HONGGUANG or infrared signal detection by blood oxygen probe simultaneously, can obtain the pulse oscillator signal of HONGGUANG or infrared signal, by this quality of signals is judged, can carry out verification to the pulse oscillation information of pressure signal, can improve the accuracy of signals collecting, and then be the follow-up interference that farthest identifies, the measurement error of effectively avoiding motion artifacts to cause is given security.
In addition, because generally when carrying out Intensive Care Therapy in hospital, non-invasive blood pressure and blood oxygen saturation can be monitored usually simultaneously.Therefore, the present invention does not need to increase new pick off and other equipment and just can obtain signals collecting effect preferably.
Description of drawings
In order to be easy to explanation, the present invention is done to describe in detail by following preferred embodiment and accompanying drawing.
Fig. 1 is an embodiment sketch map of pressing the method for signals collecting based on the noinvasive of optical detection of the present invention;
Fig. 2 is another embodiment sketch map of pressing the method for signals collecting based on the noinvasive of optical detection of the present invention;
Fig. 3 is an embodiment sketch map of pressing the device of signals collecting based on the noinvasive of optical detection of the present invention;
Fig. 4 is another embodiment sketch map of pressing the device of signals collecting based on the noinvasive of optical detection of the present invention;
Fig. 5 is for judging the index sketch map of pulse wave signal quality.
The specific embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Press based on the noinvasive of optical detection signals collecting method an embodiment sketch map as shown in Figure 1, specifically describe as follows:
101, the cuff pressure signal of gathering scheduled duration is also gathered HONGGUANG or infrared signal by blood oxygen probe simultaneously;
Cuff is bundled in testee's arm, blood oxygen transducer is clipped in tested finger, toe or is bundled in forehead, be sandwiched in ear, start then and measure, gather the pressure signal of cuff respectively and gather HONGGUANG or infrared signal by blood oxygen probe;
102, described cuff pressure signal is carried out analog digital conversion and isolates the first pulse oscillator signal;
Obtain the cuff pressure signal by pressure transducer, comprising atmospheric pressure signal and pulse oscillator signal (may also comprise interfering signal), analog electrical signal is carried out analog digital conversion, be converted to digital signal, by flip-flop and alternating component are separated, realize isolating the first pulse oscillator signal;
103, do you judge whether the described first pulse oscillator signal satisfies default prescription?
The described first pulse oscillator signal is carried out the quality judgement to be preferably:
At first, judge that whether the signal rhythm and pace of moving things surpasses threshold value: the time is no more than 40%(with the variation of the first pulse oscillator signal time average before and also can rule of thumb selects between the current first pulse oscillator signal peak value), i.e. Time-Timeavg＜=Time * 0.4 or Timeavg – Time＜=Time * 0.4.Time was current first pulse oscillator signal peak value and a last pulse oscillator signal peak intervals time, and Timeavg is meant the peak value of the peak intervals time that obtains effective pulse vibration.
Secondly, judge whether pulse oscillator signal width surpasses threshold value, the current first pulse wave signal width and the variation of pulse wave width meansigma methods before are no more than 20%(and also can rule of thumb select), i.e. Width-Widthavg＜=Width * 0.2 or Widthavg – Width＜=Width * 0.2.Width was current pulse wave peak value and a last pulse peak intervals time, and Widthavg is meant the width that obtains effective pulse wave.
Once more, judge then whether signal amplitude difference exceeds threshold value: the current first pulse oscillator signal amplitude and before the difference between the pulse wave average amplitude be no more than 20%(and also can rule of thumb select).Be Pulse-Pulseavg＜=Pulse * 0.2 or Pulseavg-Pulse＜=Pulse * 0.2.Pulse is the peak-to-peak value amplitude of current pulse wave, and Pulseavg is for obtaining the meansigma methods of the peak-to-peak value amplitude of effective pulse wave.
If satisfy above-mentioned condition then judge that current pulse oscillator signal quality meets the requirements and enter next step, otherwise then do not meet prescription, return step 101, the pulse oscillator signal that preferably quality met the requirements is labeled as effective pulse wave, and the pulse oscillator signal that non-conformity of quality is closed requirement is labeled as the invalid pulse ripple.
Certainly determination methods as above can be carried out the order transposing, and the method that pulse oscillator signal quality is judged also has much in addition, such as by the pulse dutycycle, also can be used for judging by isoparametric rate of change of pulse rise time.
104, the HONGGUANG that will gather simultaneously or infrared signal carry out analog digital conversion and isolate the second pulse oscillator signal;
Blood oxygen probe sends HONGGUANG and infrared light.Simultaneously, receive by the HONGGUANG after the blood absorption or the light intensity signal of infrared light, comprising the second pulse oscillator signal, flip-flop in the light intensity signal of described HONGGUANG or infrared light and alternating component to be separated, alternating component is the second pulse oscillator signal.
105, do you judge whether the described second pulse oscillator signal satisfies default prescription?
The described second pulse oscillator signal is carried out the quality judgement to be preferably:
At first, judge that whether the signal rhythm and pace of moving things surpasses threshold value: the time is no more than 40%(with the variation of the second pulse oscillator signal time average before and also can rule of thumb selects between the current second pulse oscillator signal peak value), i.e. Time-Timeavg＜=Time * 0.4 or Timeavg – Time＜=Time * 0.4.Time was current second pulse oscillator signal peak value and a last pulse oscillator signal peak intervals time, and Timeavg is meant the peak value of the peak intervals time that obtains effective pulse vibration.
Secondly, judge whether pulse oscillator signal width surpasses threshold value, the current second pulse wave signal width and the variation of pulse wave width meansigma methods before are no more than 20%(and also can rule of thumb select), i.e. Width-Widthavg＜=Width * 0.2 or Widthavg – Width＜=Width * 0.2.Width was current pulse wave peak value and a last pulse peak intervals time, and Widthavg is meant the width that obtains effective pulse wave.
Once more, judge then whether signal amplitude difference exceeds threshold value: the current second pulse oscillator signal amplitude and before the difference between the pulse wave average amplitude be no more than 20%(and also can rule of thumb select).Be Pulse-Pulseavg＜=Pulse * 0.2 or Pulseavg-Pulse＜=Pulse * 0.2.Pulse is the peak-to-peak value amplitude of current pulse wave, and Pulseavg is for obtaining the meansigma methods of the peak-to-peak value amplitude of effective pulse wave.
Time, Width, the signal of Pulse such as Fig. 5.
If satisfy above-mentioned condition then judge that current pulse oscillator signal quality meets the requirements, enter next step, otherwise then do not meet prescription, return step 101, the pulse oscillator signal that preferably quality met the requirements is labeled as effective pulse wave, and the pulse oscillator signal that non-conformity of quality is closed requirement is labeled as the invalid pulse ripple.
Certainly determination methods as above can be carried out the order transposing, and the method that pulse oscillator signal quality is judged also has much in addition, such as by the pulse dutycycle, also can be used for judging by isoparametric rate of change of pulse rise time.
106, with described first pulse oscillator signal output;
If the signal quality of corresponding time period of the described first pulse oscillator signal and the second pulse oscillator signal all meets the requirements, first pulse oscillator signal data output that then should the time period, otherwise, then do not export the first pulse oscillator signal data of this time period.Described data output preferably can comprise labelling, demonstration, printing, storage, also can be used for next step signal processing, and described output then can preferably include deletion, labelling, is not used in next step signal processing.
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.As shown in Figure 2, the noinvasive based on optical detection of the present invention is pressed another embodiment of the method for signals collecting, specifically describes as follows:
201, the cuff pressure signal of gathering scheduled duration is also gathered HONGGUANG or infrared signal by blood oxygen probe simultaneously;
Cuff is bundled in testee's arm, blood oxygen transducer is clipped in tested finger, toe or is bundled in forehead, be sandwiched in ear, start then and measure, gather the pressure signal of cuff respectively and gather HONGGUANG or infrared signal by blood oxygen probe;
2021, described cuff pressure signal is carried out signal of telecommunication conditioning;
To the signal of telecommunication that pressure transducer obtains, nurse one's health, mainly amplify and work such as filtering, so that the signal after the conditioning can adapt to the input requirement of AD conversion.
2022, described cuff pressure signal is carried out analog digital conversion and carries out pretreatment;
Analog electrical signal is carried out analog digital conversion, be converted to digital signal, the cuff pressure digital signal is carried out filtering, remove out-of-band high-frequency noise.Usually bandwidth is made as 0.5Hz～5Hz.Certainly,, can also preferably and the pulse wave of oscillation be done the respective phase adjustment handle (adjusting the characteristics of handling according to hardware circuit determines), be convenient to remove interfering signal owing to there is the time-delay of hardware circuit.Can carry out Filtering Processing by two kinds of different characteristics of waveform frequency, generally the signal below the frequency 0.4Hz be thought pressure signal.The signal of frequency more than 0.4Hz thought pulse wave of oscillation signal.Because the common frequency of interfering signal is all greater than 0.4Hz, so interfering signal all is mingled in the pulse wave of oscillation usually.
2023, isolate the first pulse oscillator signal;
By flip-flop and alternating component are separated, realize isolating the first pulse oscillator signal;
Aforesaid 2021～2023 steps are the preferred implementation refinement explanations to step 102.
203, do you judge whether the described first pulse oscillator signal satisfies default prescription?
The described first pulse oscillator signal is carried out the quality judgement to be preferably:
At first, judge that whether the signal rhythm and pace of moving things surpasses threshold value: the time is no more than 40%(with the variation of the first pulse oscillator signal time average before and also can rule of thumb selects between the current first pulse oscillator signal peak value), i.e. Time-Timeavg＜=Time * 0.4 or Timeavg – Time＜=Time * 0.4.Time was current first pulse oscillator signal peak value and a last pulse oscillator signal peak intervals time, and Timeavg is meant the peak value of the peak intervals time that obtains effective pulse vibration.
Secondly, judge whether pulse oscillator signal width surpasses threshold value, the current first pulse wave signal width and the variation of pulse wave width meansigma methods before are no more than 20%(and also can rule of thumb select), i.e. Width-Widthavg＜=Width * 0.2 or Widthavg – Width＜=Width * 0.2.Width was current pulse wave peak value and a last pulse peak intervals time, and Widthavg is meant the width that obtains effective pulse wave.
Once more, judge then whether signal amplitude difference exceeds threshold value: the current first pulse oscillator signal amplitude and before the difference between the pulse wave average amplitude be no more than 20%(and also can rule of thumb select).Be Pulse-Pulseavg＜=Pulse * 0.2 or Pulseavg-Pulse＜=Pulse * 0.2.Pulse is the peak-to-peak value amplitude of current pulse wave, and Pulseavg is for obtaining the meansigma methods of the peak-to-peak value amplitude of effective pulse wave.
If satisfy above-mentioned condition then judge that current pulse oscillator signal quality meets the requirements and enter next step, otherwise then do not meet prescription, return step 201, the pulse oscillator signal that preferably quality met the requirements is labeled as effective pulse wave, and the pulse oscillator signal that non-conformity of quality is closed requirement is labeled as the invalid pulse ripple.
Certainly determination methods as above can be carried out the order transposing, and the method that pulse oscillator signal quality is judged also has much in addition, such as by the pulse dutycycle, also can be used for judging by isoparametric rate of change of pulse rise time.
2041, the HONGGUANG that will gather simultaneously or infrared signal carry out signal of telecommunication conditioning;
To the HONGGUANG of gathering simultaneously or the light intensity signal of telecommunication of infrared signal, nurse one's health, mainly amplify and work such as filtering, so that the signal after the conditioning can adapt to the input requirement of AD conversion.
2042, described HONGGUANG or infrared signal are carried out analog digital conversion and carried out pretreatment;
Analog electrical signal is carried out analog digital conversion, be converted to digital signal, HONGGUANG or infrared light digital signal are carried out filtering, remove out-of-band high-frequency noise.Certainly,, can also preferably and the pulse wave of oscillation be done the respective phase adjustment handle (adjusting the characteristics of handling according to hardware circuit determines), be convenient to remove interfering signal owing to there is the time-delay of hardware circuit.
2043, isolate the second pulse oscillator signal and with the described first pulse oscillator signal time unifying;
By flip-flop (HONGGUANG or infrared light all can) and alternating component are separated, the second pulse oscillator signal is isolated in realization, with the time unifying of the described first pulse oscillator signal and the second pulse oscillator signal, and the follow-up contrast of carrying out the signal quality of each time period.
Aforesaid 2041～2043 steps are the preferred implementation refinement explanations to step 104.
205, do you judge whether the described second pulse oscillator signal satisfies default prescription?
The described second pulse oscillator signal is carried out the quality judgement to be preferably:
At first, judge that whether the signal rhythm and pace of moving things surpasses threshold value: the time is no more than 40%(with the variation of the second pulse oscillator signal time average before and also can rule of thumb selects between the current second pulse oscillator signal peak value), i.e. Time-Timeavg＜=Time * 0.4 or Timeavg – Time＜=Time * 0.4.Time was current second pulse oscillator signal peak value and a last pulse oscillator signal peak intervals time, and Timeavg is meant the peak value of the peak intervals time that obtains effective pulse vibration.
Secondly, judge whether pulse oscillator signal width surpasses threshold value, the current second pulse wave signal width and the variation of pulse wave width meansigma methods before are no more than 20%(and also can rule of thumb select), i.e. Width-Widthavg＜=Width * 0.2 or Widthavg – Width＜=Width * 0.2.Width was current pulse wave peak value and a last pulse peak intervals time, and Widthavg is meant the width that obtains effective pulse wave.
Once more, judge then whether signal amplitude difference exceeds threshold value: the current second pulse oscillator signal amplitude and before the difference between the pulse wave average amplitude be no more than 20%(and also can rule of thumb select).Be Pulse-Pulseavg＜=Pulse * 0.2 or Pulseavg-Pulse＜=Pulse * 0.2.Pulse is the peak-to-peak value amplitude of current pulse wave, and Pulseavg is for obtaining the meansigma methods of the peak-to-peak value amplitude of effective pulse wave.
Time, Width, the signal of Pulse such as Fig. 5.
If satisfy above-mentioned condition then judge that current pulse oscillator signal quality meets the requirements, enter next step, otherwise then do not meet prescription, return step 201, the pulse oscillator signal that preferably quality met the requirements is labeled as effective pulse wave, and the pulse oscillator signal that non-conformity of quality is closed requirement is labeled as the invalid pulse ripple.
Certainly determination methods as above can be carried out the order transposing, and the method that pulse oscillator signal quality is judged also has much in addition, such as by the pulse dutycycle, also can be used for judging by isoparametric rate of change of pulse rise time.
206, do you judge that the second pulse oscillator signal and the first pulse oscillator signal change synchronously?
Whether contrast the first pulse oscillator signal changing features and the rhythm and pace of moving things changes synchronous with the variation of the second pulse oscillator signal.If synchronously, then export the first pulse oscillator signal in this time period, preferred identity is effective waveform, if with asynchronous, then do not export, and should be designated invalid signals by the first pulse oscillator signal in the time period.
The Rule of judgment whether first pulse wave signal and second pulse wave signal be synchronous, signal peak Time blanking time in two kinds of sources change the difference of ratio absolute value less than setting threshold.This threshold value be chosen as usually 20% or other.If eligible then think and synchronously enter next step, otherwise think asynchronous, then return step 201.
Peak intervals time T ime changes ratio
207, with described first pulse oscillator signal output;
If the signal quality of corresponding time period of the described first pulse oscillator signal and the second pulse oscillator signal all meets the requirements, first pulse oscillator signal data output that then should the time period, otherwise, then do not export the first pulse oscillator signal data of this time period.Described data output preferably can comprise labelling, demonstration, printing, storage, also can be used for next step signal processing, and described output then can preferably include deletion, labelling, is not used in next step signal processing.
The noinvasive that the present invention is based on optical detection is pressed an embodiment sketch map of the device of signals collecting, as shown in Figure 3, specifically describes as follows:
Press the device of signals collecting based on the noinvasive of optical detection, comprising:
Cuff pressure acquisition module 302 is connected with described cuff 301, is used to gather the cuff pressure signal of scheduled duration;
The first pulse oscillator signal separation module 303 is connected with described cuff pressure acquisition module 302, is used for described cuff pressure signal is carried out analog digital conversion and isolates the first pulse oscillator signal;
The first signal quality judge module 304 is connected with cuff pressure acquisition module 302 with the described first pulse oscillator signal separation module 303, is used to judge whether the described first pulse oscillator signal satisfies default prescription;
HONGGUANG or infrared light acquisition module 306 are connected with the first signal quality judge module 304 with described blood oxygen probe 305, are used for gathering HONGGUANG or infrared signal by blood oxygen probe in the cuff pressure signal of gathering scheduled duration;
The second pulse oscillator signal separation module 307, be connected with HONGGUANG or infrared light acquisition module 306 with the described first signal quality judge module 304, the HONGGUANG or the infrared signal that are used for gathering simultaneously carry out analog digital conversion and isolate the second pulse oscillator signal;
Secondary signal quality judge module 308, be connected with HONGGUANG or infrared light acquisition module 306 with the described second pulse oscillator signal separation module 307, cuff pressure acquisition module 302, be used to judge whether the described second pulse oscillator signal satisfies default prescription;
The first pulse oscillator signal output module 309 is connected with described secondary signal quality judge module 308, is used for described first pulse oscillator signal output.
In order to make purpose of the present invention, technical scheme and advantage clearer, the noinvasive that the present invention is based on optical detection is pressed another embodiment sketch map of the device of signals collecting, as shown in Figure 4, specifically describes as follows:
Press the device of signals collecting based on the noinvasive of optical detection, also comprise:
Cuff pressure signal condition module 310 is connected with described cuff pressure acquisition module 302, is used for described cuff pressure signal is carried out signal of telecommunication conditioning;
Cuff pressure signal pre-processing module 311 is connected with described cuff pressure acquisition module 302, is used for described cuff pressure signal is carried out pretreatment;
HONGGUANG or infrared signal conditioning module 312 are connected with described HONGGUANG or infrared light acquisition module 306, and the HONGGUANG or the infrared signal that are used for gathering simultaneously carry out signal of telecommunication conditioning;
HONGGUANG or infrared light pretreatment module 313 are connected with described HONGGUANG or infrared light acquisition module 306, are used for described HONGGUANG or infrared signal are carried out pretreatment;
Time unifying module 314 is connected with the described second pulse oscillator signal separation module 307, is used for described second pulse oscillator signal and the described first pulse oscillator signal time unifying;
The synchronous judge module 315 of signal is connected with described secondary signal quality judge module 308, is used to judge whether the second pulse oscillator signal changes synchronously with the first pulse oscillator signal.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention
Claims (10)
1. press the method for signals collecting based on the noinvasive of optical detection, it is characterized in that, comprise the steps:
Step 1 is gathered the cuff pressure signal of scheduled duration and is gathered HONGGUANG or infrared signal by blood oxygen probe simultaneously;
Step 2 is carried out described cuff pressure signal analog digital conversion and is isolated the first pulse oscillator signal;
Step 3 judges whether the described first pulse oscillator signal satisfies default prescription, as satisfying, then enters step 4, as not satisfying, then returns step 1;
Step 4 is carried out HONGGUANG or the infrared signal of gathering simultaneously analog digital conversion and is isolated the second pulse oscillator signal;
Step 5 judges whether the described second pulse oscillator signal satisfies default prescription, as satisfying, then enters step 6, as not satisfying, then returns step 1;
Step 6 is with described first pulse oscillator signal output.
2.
Method of pressing signals collecting based on the noinvasive of optical detection according to claim 1, it is characterized in that, also comprise after the described step 1 described cuff pressure signal is carried out the step that signal of telecommunication conditioning is carried out in signal of telecommunication conditioning and the HONGGUANG that will gather simultaneously or infrared signal.
3.
Method of pressing signals collecting based on the noinvasive of optical detection according to claim 1, it is characterized in that, also comprise before the step of isolating the first pulse oscillator signal described in the step 2 the cuff pressure digital signal after the analog digital conversion is carried out pretreated step.
4.
Method of pressing signals collecting based on the noinvasive of optical detection according to claim 1, it is characterized in that, also comprise before the step of isolating the second pulse oscillator signal described in the step 4 HONGGUANG after the analog digital conversion or infrared light digital signal are carried out pretreated step.
5.
Method of pressing signals collecting based on the noinvasive of optical detection according to claim 1, it is characterized in that, also comprise step after the step of isolating the second pulse oscillator signal described in the step 4 described second pulse oscillator signal and the described first pulse oscillator signal time unifying.
6.
Noinvasive based on optical detection according to claim 1 is pressed the method for signals collecting, it is characterized in that, also comprise after the described step 5 judge the second pulse oscillator signal whether with the first pulse oscillator signal step of variation synchronously.
7.
Press the device of signals collecting based on the noinvasive of optical detection, it is characterized in that, comprising:
Cuff;
The cuff pressure acquisition module is connected with described cuff, is used to gather the cuff pressure signal of scheduled duration;
The first pulse oscillator signal separation module is connected with described cuff pressure acquisition module, is used for described cuff pressure signal is carried out analog digital conversion and isolates the first pulse oscillator signal;
The first signal quality judge module is connected with the cuff pressure acquisition module with the described first pulse oscillator signal separation module, is used to judge whether the described first pulse oscillator signal satisfies default prescription;
Blood oxygen probe;
HONGGUANG or infrared light acquisition module are connected with the first signal quality judge module with described blood oxygen probe, are used for gathering HONGGUANG or infrared signal by blood oxygen probe in the cuff pressure signal of gathering scheduled duration;
The second pulse oscillator signal separation module is connected with HONGGUANG or infrared light acquisition module with the described first signal quality judge module, and the HONGGUANG or the infrared signal that are used for gathering simultaneously carry out analog digital conversion and isolate the second pulse oscillator signal;
Secondary signal quality judge module is connected with HONGGUANG or infrared light acquisition module with the described second pulse oscillator signal separation module 307, cuff pressure acquisition module, is used to judge whether the described second pulse oscillator signal satisfies default prescription;
The first pulse oscillator signal output module is connected with described secondary signal quality judge module, is used for described first pulse oscillator signal output.
8.
Noinvasive based on optical detection according to claim 7 is pressed the device of signals collecting, it is characterized in that, describedly presses the device of signals collecting based on the noinvasive of optical detection, also comprises:
Cuff pressure signal condition module is connected with described cuff pressure acquisition module, is used for described cuff pressure signal is carried out signal of telecommunication conditioning;
The cuff pressure signal pre-processing module is connected with described cuff pressure acquisition module, is used for described cuff pressure signal is carried out pretreatment.
9.
Noinvasive based on optical detection according to claim 7 is pressed the device of signals collecting, it is characterized in that, describedly presses the device of signals collecting based on the noinvasive of optical detection, also comprises:
HONGGUANG or infrared signal conditioning module are connected with described HONGGUANG or infrared light acquisition module, and the HONGGUANG or the infrared signal that are used for gathering simultaneously carry out signal of telecommunication conditioning;
HONGGUANG or infrared light pretreatment module are connected with described HONGGUANG or infrared light acquisition module, are used for described HONGGUANG or infrared signal are carried out pretreatment.
10.
Noinvasive based on optical detection according to claim 7 is pressed the device of signals collecting, it is characterized in that, describedly presses the device of signals collecting based on the noinvasive of optical detection, also comprises:
The time unifying module is connected with the described second pulse oscillator signal separation module, is used for described second pulse oscillator signal and the described first pulse oscillator signal time unifying;
The synchronous judge module of signal is connected with described secondary signal quality judge module, is used to judge whether the second pulse oscillator signal changes synchronously with the first pulse oscillator signal
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310126131.XA CN103211586B (en) | 2013-04-12 | 2013-04-12 | Optical-detection-based noninvasive pressure signal acquisition method and device |
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| CN110755055A (en) * | 2019-10-18 | 2020-02-07 | 上海掌门科技有限公司 | Method and equipment for determining waveform evaluation information of pulse waveform |
| CN111195130A (en) * | 2018-11-19 | 2020-05-26 | 众里科技股份有限公司 | Blood oxygen sensing device |
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