CN103315734A - Waveshaping method and device for monitoring data - Google Patents
Waveshaping method and device for monitoring data Download PDFInfo
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- CN103315734A CN103315734A CN2013101829968A CN201310182996A CN103315734A CN 103315734 A CN103315734 A CN 103315734A CN 2013101829968 A CN2013101829968 A CN 2013101829968A CN 201310182996 A CN201310182996 A CN 201310182996A CN 103315734 A CN103315734 A CN 103315734A
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Abstract
The invention provides a waveshaping method and device for monitoring data. The method comprises the following steps: the monitoring data is acquired; whether the amount of the motoring data is less than the convention amount in the preset cache time is judged; if the amount of the motoring data is less than the convention amount, the deletion amount between the amount of the motoring data and the convention amount is acquired; uniform interpolation processing is performed to the motoring data according to the deletion amount, and the interpolation data is formed; the wave shape is formed according to the interpolation data. According to the waveshaping method and device for the motoring data, deletion data positions are uniformly distributed in the whole wave shape, and the wave shape distortion influence brought by the deletion data is dispersed, so that the wave shape distortion is reduced, and the accuracy of the wave shape is improved.
Description
Technical field
The present invention relates to Digital image technology, particularly relate to a kind of waveform formation method and device of guarding data.
Background technology
Custodial care facility obtains patient's physiological data and video data waveform in real time, yet, because the clock between host computer and the slave computer is variant or signal disturbs, cause receiving that data do not reach the quantity of agreement, when forming data waveform, according to last receive data missing data is replenished, to guarantee the real-time demonstration of data waveform.
Yet, when missing data is more, can haul out in the waveform back straight line, and the data of disappearance being more, the straight line phenomenon is more obvious, causes thus wave distortion.
Summary of the invention
Based on this, being necessary provides a kind of waveform formation method that can improve the monitoring data of waveform accuracy for the problem of the wave distortion that causes because of the receive data disappearance.
In addition, also be necessary the problem for the wave distortion that causes because of the receive data disappearance, provide a kind of waveform that can improve the monitoring data of waveform accuracy to form device.
A kind of waveform formation method of guarding data comprises the steps:
Obtain the monitoring data;
Whether judgement is lower than approximately determined number in the quantity of preset buffer memory described monitoring data in the time;
If, then obtain the disappearance quantity that the quantity of described monitoring data is compared with about determined number, according to described disappearance quantity described monitoring data are carried out even interpolation processing, form interpolated data;
Form waveform according to described interpolated data.
Therein among embodiment, whether described judgement is lower than approximately in the quantity of preset buffer memory described monitoring data in the time that the step of determined number comprises:
Type or arranging of user according to described monitoring data are adjusted time delay;
Whether the quantity of judging described monitoring data in described time delay is lower than approximately determined number.
Therein among embodiment, describedly obtain the disappearance quantity that the quantity of described monitoring data is compared with about determined number, according to described disappearance quantity described monitoring data are carried out even interpolation processing, the step that forms interpolated data comprises:
Disappearance quantity even data inserting point in the receiving sequence of described monitoring data according to described monitoring data;
Data value according to the described data inserting point of monitoring data prediction before and after the described data inserting point position.
Therein among embodiment, the step of described data value according near the described data inserting point of monitoring data prediction the described data inserting point is specially the data value according to the described data inserting point of mean prediction of the monitoring data of front and back, described data inserting point position.
Therein among embodiment, the step of described data value according near the described data inserting point of monitoring data prediction the described data inserting point is specially the data value of predicting described data inserting point according to the linear trend of the monitoring data of front and back, described data inserting point position.
A kind of waveform of guarding data forms device, comprising:
Acquisition module is used for obtaining the monitoring data;
Judge module is used for judging whether the quantity in preset buffer memory described monitoring data in the time is lower than approximately determined number;
Interpolating module, be used for when judge module determines quantity in preset buffer memory described monitoring data in the time and is lower than approximately determined number, obtain the disappearance quantity that the quantity of described monitoring data is compared with about determined number, according to described disappearance quantity described monitoring data are carried out even interpolation processing, form interpolated data;
Output module is used for forming waveform according to described interpolated data.
Among embodiment, described judge module comprises therein:
Setting unit is used for adjusting time delay according to type or the arranging of user of described monitoring data;
Judging unit is used for judging whether the quantity of described monitoring data in described time delay is lower than approximately determined number.
Among embodiment, described interpolating module comprises therein:
Interpolating unit is used for according to the disappearance quantity of described monitoring data at the even data inserting point of the receiving sequence of described monitoring data;
Predicting unit is used for the data value according to the described data inserting point of monitoring data prediction before and after the described data inserting point position.
Among embodiment, described predicting unit also is used for the data value according to the described data inserting point of mean prediction of the monitoring data of front and back, described data inserting point position therein.
Among embodiment, described predicting unit also is used for predicting according to the linear trend of the monitoring data of front and back, described data inserting point position the data value of described data inserting point therein.
The waveform of above-mentioned monitoring data forms method and apparatus, by obtaining the monitoring data, whether judgement is lower than approximately determined number in the quantity of preset buffer memory described monitoring data in the time, if, then obtain the disappearance quantity that the quantity of described monitoring data is compared with about determined number, according to described disappearance quantity described monitoring data are carried out even interpolation processing, form interpolated data, form waveform according to described interpolated data, the missing data position is evenly distributed in the whole waveform goes, the wave distortion impact that disperses missing data to bring, thus wave distortion reduced, improve the accuracy of waveform.
Description of drawings
Fig. 1 is that a kind of waveform of guarding data forms the method flow schematic diagram among the embodiment;
Fig. 2 forms the method flow schematic diagram for a kind of waveform of guarding data among another embodiment;
Fig. 3 forms the method flow schematic diagram for a kind of waveform of guarding data among another embodiment;
Fig. 4 is that a kind of waveform of guarding data forms the apparatus structure schematic diagram among the embodiment;
Fig. 5 forms the apparatus structure schematic diagram for a kind of waveform of guarding data among another embodiment;
Fig. 6 forms the apparatus structure schematic diagram for a kind of waveform of guarding data among another embodiment.
The specific embodiment
Below in conjunction with specific embodiment and accompanying drawing the waveform formation method of monitoring data and the technical scheme of device are described in detail, so that it is clearer.
As shown in Figure 1, in one embodiment, a kind of waveform formation method of guarding data comprises the steps:
Step S110 obtains the monitoring data.
In the present embodiment, gather the original physiologic data such as electrocardio, breathing, non-invasive blood pressure, blood oxygen saturation, pulse or body temperature from human body by sensor, obtain digitized physiological data by sampling, filtering, coding etc., by being carried out analyzing and processing, digitized physiological data obtains guarding data, the monitoring data of obtaining are the forms such as packet or message, the monitoring data of obtaining are saved in relief area, as in the disk or in the buffer memory, form by array or data base is preserved, and is convenient to read and calls.
Step S130 judges whether the quantity in preset buffer memory time internal electronic monitoring data is lower than approximately determined number.
In the present embodiment, default cache-time is the time within the scope that the monitoring real-time allows, and such as 1 second, draws waveform after this time delay again, does not affect the promptness of monitoring data waveform.After according to the preset buffer memory time a plurality of monitoring data that receive being carried out buffer memory, whether the quantity of judging the monitoring data of the buffer memory in the preset buffer memory time is lower than approximately determined number, namely according to the transmitting terminal of monitoring data and the data volume of the agreement of the communication protocol between the receiving terminal, or the data volume that can receive in the time in preset buffer memory according to the transmission speed of transmitting terminal, it is 500/second as get access to electrocardiogram (ECG) data agreement from patient, but reality is only received 493, and the quantity of then guarding data is lower than approximately determined number.If the quantity that determines in preset buffer memory time internal electronic monitoring data is lower than approximately determined number, then forward step S150 to, otherwise, then forward step S190 to.By being carried out buffer memory, the monitoring data that receive to avoid calling because requirement of real-time is left in the basket, improve stability and the accuracy of monitoring data, whether the quantity by the monitoring data that periodically judge to receive is less than the disappearance that about determined number can in time be found data, is convenient in time missing data be carried out Interpolation compensation.
Step S150 obtains the disappearance quantity that the quantity of monitoring data is compared with about determined number, according to disappearance quantity the monitoring data is carried out even interpolation processing, forms interpolated data.
In the present embodiment, by about determined number and monitoring data bulk being subtracted each other the quantity of the missing data that obtains guarding data, the monitoring data that receive are pressed the time of reception ordering, form monitoring data queue, then missing data is evenly spread in the monitoring data queue, with data accepted quantity m divided by missing data quantity n, obtain data and insert interval m/n, insert a missing data every m/n monitoring data, and the corresponding time of reception of monitoring data after the data inserting delayed a time of reception unit, if m/n is not integer, then the m/n round to be processed, the numerical value of missing data can be sky, be 0 or other numerical value.The insertion and deletion data namely obtain interpolated data in the monitoring data after ordering.Because the location of interpolation of interpolated data is higher with shortage of data position probability more approaching or that the position is identical in the monitoring data, so carry out the accuracy that even interpolation can improve waveform to guarding data.
Step S170 forms waveform according to interpolated data.
In the present embodiment, obtain the monitoring data through even interpolation processing, i.e. interpolated data is according to monitoring data and the drawing waveforms of amended time of reception on time shaft thereof, replenish waveform according to missing data and location of interpolation thereof, and in time be presented in the display screen.By successively drawing monitoring data and the corresponding waveform of missing data, can save memory space and raise the efficiency.
Step S190 is according to monitoring data formation waveform.
In the present embodiment, when the quantity of preset buffer memory time internal electronic monitoring data is not less than approximately determined number, according to monitoring data drawing waveforms.Fix owing to drawing the time span of each waveform, so when the quantity of monitoring data is greater than or equal to approximately determined number, will guard data and be evenly distributed on interior getting final product of this set time.If come drawing waveforms figure according to Data Position, then can be in the quantity of monitoring data during greater than about determined number, drawing waveforms again after the monitoring data of Delete superfluous, the deletion mode is for from the ending deletion or randomly draw unnecessary monitoring data.
The waveform formation method of above-mentioned monitoring data, by obtaining the monitoring data, whether judgement is lower than approximately determined number in the quantity of preset buffer memory described monitoring data in the time, if, then obtain the disappearance quantity that the quantity of described monitoring data is compared with about determined number, according to described disappearance quantity described monitoring data are carried out even interpolation processing, form interpolated data, form waveform according to described interpolated data, the missing data position is evenly distributed in the whole waveform goes, the wave distortion impact that disperses described missing data to bring, thus wave distortion reduced, improve the accuracy of waveform.
As shown in Figure 2, in one embodiment, above-mentioned steps S130 comprises the steps:
Step S131 adjusts time delay according to type or the arranging of user of monitoring data.
In the present embodiment, requirement of real-time according to difference monitoring data type is adjusted the time that postpones drawing waveforms automatically, as for breathing or the requirement of real-time such as body temperature is not very high physiological data, can be arranged time delay slightly long, such as 2 seconds, can arrange for physiological datas such as electrocardio, blood pressure or blood oxygen slightly short, such as 1 second, make the monitoring data waveform in requirement of real time, improve accuracy; For adjusting according to user's manual setting time delay, such as the time value that arranges according to the user or speed step etc. to adjusting time delay, make the user accurate situation adjust flexibly time delay according to the waveform in the display screen, and then the accuracy of adjustment waveform, improve adaptability and use motility to environment.
Step S133 judges whether the quantity of internal electronic monitoring data time delay is lower than approximately determined number.
In the present embodiment, obtain the time delay of in step S131, adjusting, according to the monitoring data of periodically obtaining this section this time delay and receiving in the period, whether the quantity of judging these monitoring data is lower than approximately determined number, if then forward step S150 to, if not, then forward step S190 to.
As described in Figure 3, in one embodiment, above-mentioned steps S150 comprises the steps:
Step S151 is according to disappearance quantity even data inserting point in the receiving sequence of monitoring data of monitoring data.
In the present embodiment, obtain and compare the data bulk that the monitoring data lack with about determined number, insert the data point identical with disappearance quantity in the receiving sequence of the monitoring data of having obtained, and evenly distribute, this receiving sequence is the set of the monitoring data point that sorts according to the time of reception order.
Step S153 is according to the data value of the monitoring data prediction data inserting point before and after the data inserting point position.
In the present embodiment, according near the monitoring data the data inserting point position in receiving sequence data point is carried out assignment, improve flatness and the accuracy of waveform.
Concrete, can be by according to before and after the data inserting point position the data value of mean prediction insertion point of monitoring data, monitoring data before and after the data inserting point can refer to a plurality of monitoring data of data inserting point front, a plurality of monitoring data of back, insertion point or a plurality of monitoring data of front and back, as guarding data and rear 1 monitoring data calculating mean value according to front 1 of insertion point, with the numerical value of this meansigma methods as the insertion point.Numerical value according to meansigma methods prediction data inserting point because calculate simply, can improve predictive efficiency.
In another embodiment, can also be the data value of predicting data inserting point according to the linear trend of the monitoring data before and after the data inserting point position.Namely calculate the linear function of the data point of front and back, data inserting point position, according to the data value of this linear function prediction data inserting point, the data point before and after this data inserting point position can be before a plurality of monitoring data of data inserting point, insertion point afterwards a plurality of monitoring data or the insertion point before with afterwards a plurality of monitoring data.According to the numerical value of linear trend prediction data inserting point, can improve the stability of waveform.This linear trend can be rectilinear trend, parabola trend or the linear trend determined according to the data point before and after the position, insertion point etc.
As shown in Figure 4, in one embodiment, a kind of waveform of guarding data forms device, comprises acquisition module 110, judge module 130, interpolating module 150 and output module 170.
In the present embodiment, acquisition module 110 gathers the original physiologic data such as electrocardio, breathing, non-invasive blood pressure, blood oxygen saturation, pulse or body temperature by sensor from human body, obtain digitized physiological data by sampling, filtering, coding etc., by being carried out analyzing and processing, digitized physiological data obtains guarding data, the monitoring data of obtaining are the forms such as packet or message, the monitoring data of obtaining are saved in relief area, as in the disk or in the buffer memory, form by array or data base is preserved, and is convenient to read and calls.
In the present embodiment, default cache-time is the time within the scope that the monitoring real-time allows, and such as 1 second, draws waveform after this time delay again, does not affect the promptness of monitoring data waveform.After according to the preset buffer memory time a plurality of monitoring data that receive being carried out buffer memory, judge module 130 judges whether the quantity of the monitoring data of the buffer memory in the preset buffer memory time is lower than approximately determined number, namely according to the transmitting terminal of monitoring data and the data volume of the agreement of the communication protocol between the receiving terminal, or the data volume that can receive in the time in preset buffer memory according to the transmission speed of transmitting terminal, it is 500/second as get access to electrocardiogram (ECG) data agreement from patient, but reality is only received 493, and the quantity of then guarding data is lower than approximately determined number.If the quantity that determines in preset buffer memory time internal electronic monitoring data is lower than approximately determined number, then notifies interpolating module 150, otherwise judge and finish.By being carried out buffer memory, the monitoring data that receive to avoid calling because requirement of real-time is left in the basket, improve stability and the accuracy of monitoring data, whether the quantity by the monitoring data that periodically judge to receive is less than the disappearance that about determined number can in time be found data, is convenient in time missing data be carried out Interpolation compensation.
In the present embodiment, interpolating module 150 is by subtracting each other about determined number and monitoring data bulk the quantity of the missing data that obtains guarding data, the monitoring data that receive are pressed the time of reception ordering, form monitoring data queue, then missing data is evenly spread in the monitoring data queue, with data accepted quantity m divided by missing data quantity n, obtain data and insert interval m/n, insert a missing data every m/n monitoring data, and the corresponding time of reception of monitoring data after the data inserting delayed a time of reception unit, if m/n is not integer, then the m/n round is processed, the numerical value of missing data can be sky, be 0 or other numerical value.The insertion and deletion data namely obtain interpolated data in the monitoring data after ordering.Because the location of interpolation of interpolated data is higher with shortage of data position probability more approaching or that the position is identical in the monitoring data, so carry out the accuracy that even interpolation can improve waveform to guarding data.
In the present embodiment, output module 170 obtains the monitoring data through even interpolation processing, i.e. interpolated data is according to monitoring data and the drawing waveforms of amended time of reception on time shaft thereof, replenish waveform according to missing data and location of interpolation thereof, and in time be presented in the display screen.By successively drawing monitoring data and the corresponding waveform of missing data, can save memory space and raise the efficiency.
In another embodiment, when the quantity of preset buffer memory time internal electronic monitoring data was not less than approximately determined number, output module 170 was according to monitoring data drawing waveforms.Fix owing to drawing the time span of each waveform, so when the quantity of monitoring data is greater than or equal to approximately determined number, will guard data and be evenly distributed on interior getting final product of this set time.If come drawing waveforms figure according to Data Position, then can be in the quantity of monitoring data during greater than about determined number, drawing waveforms again after the monitoring data of Delete superfluous, the deletion mode is for from the ending deletion or randomly draw unnecessary monitoring data.
The waveform of above-mentioned monitoring data forms device, by obtaining the monitoring data, whether judgement is lower than approximately determined number in the quantity of preset buffer memory described monitoring data in the time, if, then obtain the disappearance quantity that the quantity of described monitoring data is compared with about determined number, according to described disappearance quantity described monitoring data are carried out even interpolation processing, form interpolated data, form waveform according to described interpolated data, the missing data position is evenly distributed in the whole waveform goes, the wave distortion impact that disperses described missing data to bring, thus wave distortion reduced, improve the accuracy of waveform.
As shown in Figure 5, in one embodiment, above-mentioned judge module 130 comprises setting unit 131 and judging unit 133.
Setting unit 131 is used for adjusting time delay according to type or the arranging of user of monitoring data.
In the present embodiment, setting unit 131 is adjusted the time that postpones drawing waveforms automatically according to the requirement of real-time of difference monitoring data type, as for breathing or the requirement of real-time such as body temperature is not very high physiological data, can be arranged time delay slightly long, such as 2 seconds, can arrange for physiological datas such as electrocardio, blood pressure or blood oxygen slightly short, such as 1 second, make the monitoring data waveform in requirement of real time, improve accuracy; For time delay, setting unit 131 can also be adjusted according to user's manual setting, such as the time value that arranges according to the user or speed step etc. to adjusting time delay, make the user accurate situation adjust flexibly time delay according to the waveform in the display screen, and then the accuracy of adjustment waveform, improve adaptability and use motility to environment.
Judging unit 133 judges whether the quantity of internal electronic monitoring data time delay is lower than approximately determined number.
In the present embodiment, judging unit 133 obtains is set 131 time delays of adjusting, according to the monitoring data of periodically obtaining this section this time delay and receiving in the period, whether the quantity of judging these monitoring data is lower than approximately determined number, if then notify interpolating module 150, otherwise, judge and finish.
As described in Figure 6, in one embodiment, above-mentioned interpolating module 150 comprises interpolating unit 151 and predicting unit 153.
Interpolating unit 151 is used for according to the receiving sequence even data inserting point of the disappearance quantity of guarding data in the monitoring data.
In the present embodiment, interpolating unit 151 is obtained and is compared the data bulk that the monitoring data lack with about determined number, in the receiving sequence of the monitoring data of having obtained, insert the data point identical with disappearance quantity, and evenly distribute, this receiving sequence is the set of the monitoring data point that sorts according to the time of reception order.
Predicting unit 153 is used for the data value according to the monitoring data prediction data inserting point before and after the data inserting point position.
In the present embodiment, predicting unit 153 is carried out assignment according near the monitoring data the data inserting point position in receiving sequence to data point, improves flatness and the accuracy of waveform.
In one embodiment, predicting unit 153 is also for the data value that passes through according to the mean prediction insertion point of the monitoring data before and after the data inserting point position.Monitoring data before and after this position can refer to a plurality of monitoring data of data inserting point front, a plurality of monitoring data of back, insertion point or a plurality of monitoring data of front and back, as guarding data and rear 1 monitoring data calculating mean value according to front 1 of insertion point, with the numerical value of this meansigma methods as the insertion point.Numerical value according to meansigma methods prediction data inserting point because calculate simply, can improve predictive efficiency.
In another embodiment, predicting unit 153 also is used for the data value according to the linear trend prediction data inserting point of the monitoring data before and after the data inserting point position.Namely calculate the linear function of the data point of front and back, data inserting point position, according to the data value of this linear function prediction data inserting point, the data point before and after this data inserting point position can be before a plurality of monitoring data of data inserting point, insertion point afterwards a plurality of monitoring data or the insertion point before with afterwards a plurality of monitoring data.According to the numerical value of linear trend prediction data inserting point, can improve the stability of waveform.This linear trend can be rectilinear trend, parabola trend or the linear trend determined according to the data point before and after the position, insertion point etc.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a waveform formation method of guarding data comprises the steps:
Obtain the monitoring data;
Whether judgement is lower than approximately determined number in the quantity of preset buffer memory described monitoring data in the time;
If, then obtain the disappearance quantity that the quantity of described monitoring data is compared with about determined number, according to described disappearance quantity described monitoring data are carried out even interpolation processing, form interpolated data;
Form waveform according to described interpolated data.
2. the waveform formation method of monitoring data according to claim 1 is characterized in that, whether described judgement is lower than approximately in the quantity of preset buffer memory described monitoring data in the time that the step of determined number comprises:
Type or arranging of user according to described monitoring data are adjusted time delay;
Whether the quantity of judging described monitoring data in described time delay is lower than approximately determined number.
3. the waveform formation method of monitoring data according to claim 1, it is characterized in that, describedly obtain the disappearance quantity that the quantity of described monitoring data is compared with about determined number, according to described disappearance quantity described monitoring data are carried out even interpolation processing, the step that forms interpolated data comprises:
Disappearance quantity even data inserting point in the receiving sequence of described monitoring data according to described monitoring data;
Data value according to the described data inserting point of monitoring data prediction before and after the described data inserting point position.
4. the waveform formation method of monitoring data according to claim 3, it is characterized in that, the step of described data value according to the described data inserting point of monitoring data prediction before and after the described data inserting point position is specially the data value according to the described data inserting point of mean prediction of the monitoring data of front and back, described data inserting point position.
5. the waveform formation method of monitoring data according to claim 3, it is characterized in that, the step of described data value according to the described data inserting point of monitoring data prediction before and after the described data inserting point position is specially the data value of predicting described data inserting point according to the linear trend of the monitoring data of front and back, described data inserting point position.
6. a waveform of guarding data forms device, comprising:
Acquisition module is used for obtaining the monitoring data;
Judge module is used for judging whether the quantity in preset buffer memory described monitoring data in the time is lower than approximately determined number;
Interpolating module, be used for when judge module determines quantity in preset buffer memory described monitoring data in the time and is lower than approximately determined number, obtain the disappearance quantity that the quantity of described monitoring data is compared with about determined number, according to described disappearance quantity described monitoring data are carried out even interpolation processing, form interpolated data;
Output module is used for forming waveform according to described interpolated data.
7. the waveform of monitoring data according to claim 6 forms device, it is characterized in that, described judge module comprises:
Setting unit is used for adjusting time delay according to type or the arranging of user of described monitoring data;
Judging unit is used for judging whether the quantity of described monitoring data in described time delay is lower than approximately determined number.
8. the waveform of monitoring data according to claim 6 forms device, it is characterized in that, described interpolating module comprises:
Interpolating unit is used for according to the disappearance quantity of described monitoring data at the even data inserting point of the receiving sequence of described monitoring data;
Predicting unit is used for the data value according to the described data inserting point of monitoring data prediction before and after the described data inserting point position.
9. the waveform of monitoring data according to claim 8 forms device, it is characterized in that, described predicting unit also is used for the data value according to the described data inserting point of mean prediction of the monitoring data before and after the described data inserting point position.
10. the waveform of monitoring data according to claim 8 forms device, it is characterized in that, described predicting unit also is used for predicting according to the linear trend of the monitoring data before and after the described data inserting point position data value of described data inserting point.
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