CN116712068A - Waveform data display method, device, oximeter and storage medium - Google Patents
Waveform data display method, device, oximeter and storage medium Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 42
- 230000008602 contraction Effects 0.000 claims abstract description 13
- 238000012545 processing Methods 0.000 claims description 11
- 238000004590 computer program Methods 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 22
- 239000008280 blood Substances 0.000 description 19
- 210000004369 blood Anatomy 0.000 description 19
- 230000008859 change Effects 0.000 description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 9
- 229910052760 oxygen Inorganic materials 0.000 description 9
- 239000001301 oxygen Substances 0.000 description 9
- 238000004891 communication Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000006870 function Effects 0.000 description 5
- 230000010412 perfusion Effects 0.000 description 4
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- 210000004204 blood vessel Anatomy 0.000 description 3
- 230000017531 blood circulation Effects 0.000 description 2
- 230000008081 blood perfusion Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- 210000004165 myocardium Anatomy 0.000 description 2
- 230000002861 ventricular Effects 0.000 description 2
- 208000001953 Hypotension Diseases 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003205 diastolic effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 210000000624 ear auricle Anatomy 0.000 description 1
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- 208000021822 hypotensive Diseases 0.000 description 1
- 230000001077 hypotensive effect Effects 0.000 description 1
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- 230000000302 ischemic effect Effects 0.000 description 1
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- 210000000056 organ Anatomy 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
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- 230000002792 vascular Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
- A61B5/1455—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters
- A61B5/14551—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters for measuring blood gases
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
- A61B5/14542—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue for measuring blood gases
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
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Abstract
The embodiment of the invention provides a waveform data display method, a waveform data display device, an oximeter and a storage medium, wherein a waveform minimum value and a waveform maximum value are determined according to whether target data belong to data on a characteristic waveform or not; the target data are to-be-displayed data with earliest acquisition time in the sliding window; the sliding window is used for storing a plurality of data to be displayed; the characteristic waveform characterizes waveforms corresponding to the completion of primary contraction and relaxation of the heart; determining a step according to a difference value between a waveform minimum value and a waveform maximum value and a preset maximum resolution value; and determining pixel point coordinates of the target data according to the target data, the waveform minimum value and the step, and displaying the waveform according to the pixel point coordinates of the target data. According to the embodiment of the invention, the waveform minimum value, the waveform maximum value and the step are determined according to the self condition of the waveform of the data to be displayed, so that the real state of each characteristic waveform can be displayed, each characteristic waveform is displayed more fully, and the influence of the front waveform and the rear waveform on the characteristic waveform display is effectively reduced.
Description
Technical Field
The invention relates to the field of data processing, in particular to a waveform data display method, a waveform data display device, an oximeter and a storage medium.
Background
At present, a pulse oximeter sold in the market usually detects and stores data acquired by a sensor of the oximeter in a sliding window mode, then calculates and judges according to the data to obtain results such as blood oxygen saturation, pulse rate and the like, and finally, the results are directly displayed to a user or medical staff for viewing through a display screen. The waveform display method generally carries out equi-differential classification according to the value ranges of the minimum value and the maximum value of the data in the sliding window and the resolution of the waveform display area in the display screen, and finally each display waveform amplitude is displayed according to the segmented grade.
In general, pulse oximeters mainly include finger clips, and when the human body state changes (for example, the tension state and the relaxation state are switched), the fitting state of the finger and the sensor of the oximeter changes (for example, the finger moves, etc.), and the sensor configuration parameters of the oximeter change (for example, the sensor light intensity is adjusted, the circuit gain is adjusted, etc.), the amplitude of the pulse waveform is affected, which results in the problem that the waveform display is not full or the real waveform is compressed and displayed.
Disclosure of Invention
Accordingly, the present invention is directed to a method, an apparatus, a oximeter and a storage medium for displaying waveform data, which determine a minimum waveform value, a maximum waveform value and a step according to the condition of the waveform itself to which the data to be displayed belongs, so that the real state of each characteristic waveform can be displayed, each characteristic waveform is displayed more fully, and the influence of the front and rear waveforms on the display of the characteristic waveform is effectively reduced.
In order to achieve the above object, the technical scheme adopted by the embodiment of the invention is as follows:
in a first aspect, the present invention provides a waveform data display method, applied to an oximeter, the method comprising:
determining a waveform minimum value and a waveform maximum value according to whether the target data belongs to the data on the characteristic waveform or not; the target data are to-be-displayed data with earliest acquisition time in the sliding window; the sliding window is used for storing a plurality of data to be displayed; the characteristic waveform characterizes waveforms corresponding to the completion of primary contraction and relaxation of the heart;
determining a step according to a difference value between a waveform minimum value and a waveform maximum value and a preset maximum resolution value;
and determining pixel point coordinates of the target data according to the target data, the waveform minimum value and the step, and displaying waveforms according to the pixel point coordinates of the target data.
In an alternative embodiment, the step of determining the waveform minimum value and the waveform maximum value according to whether the target data belongs to the data on the characteristic waveform includes:
when the target data does not belong to the data on the characteristic waveform, taking a sliding window minimum value as the waveform minimum value; taking the maximum value of the sliding window as the maximum value of the waveform; the minimum value of the sliding window is the minimum value of the ordinate in all data to be displayed in the sliding window; the maximum value of the sliding window is the maximum value of the ordinate in all data to be displayed in the sliding window; and the ordinate in the data to be displayed is the acquired data of the sensor of the oximeter.
In an alternative embodiment, the step of determining the waveform minimum value and the waveform maximum value according to whether the target data belongs to the data on the characteristic waveform includes:
when the target data belongs to the data on the characteristic waveform and the ordinate in the target data is in a characteristic value interval, taking the minimum value of the characteristic value interval as the waveform minimum value; taking the maximum value of the characteristic value interval as the maximum value of the waveform; and the characteristic value interval is determined according to the ordinate minimum value and the ordinate maximum value corresponding to the systolic period of the characteristic waveform.
In an alternative embodiment, the step of determining the waveform minimum value and the waveform maximum value according to whether the target data belongs to the data on the characteristic waveform includes:
when the target data belongs to the data on the characteristic waveform and the ordinate in the target data is not in a characteristic value interval, taking a characteristic waveform minimum value as the waveform minimum value; taking the characteristic waveform maximum value as the waveform maximum value; the minimum value of the characteristic waveform is the minimum value of the ordinate of the characteristic waveform; the maximum value of the characteristic waveform is the maximum value of the ordinate of the characteristic waveform; and the characteristic value interval is determined according to the ordinate minimum value and the ordinate maximum value corresponding to the systolic period of the characteristic waveform.
In an alternative embodiment, the step of determining the step according to the difference between the minimum waveform value and the maximum waveform value and the preset maximum resolution value includes:
when the difference value between the waveform minimum value and the waveform maximum value is not larger than the maximum resolution value, taking the preset precision as a step; and the maximum resolution value is determined according to the preset precision and the preset pixel point number.
In an alternative embodiment, the step of determining the step according to the difference between the minimum waveform value and the maximum waveform value and the preset maximum resolution value includes:
when the difference between the minimum waveform value and the maximum waveform value is larger than the maximum resolution value, determining the step according to the difference between the minimum waveform value and the maximum waveform value and the preset number of pixel points.
In an alternative embodiment, the pixel coordinates of the target data include a pixel abscissa and a pixel ordinate; the step of determining pixel coordinates of the target data according to the target data, the waveform minimum value and the step includes:
calculating a difference value between an ordinate in the target data and the waveform minimum value to obtain a target difference value;
calculating the ratio of the target difference value to the step to obtain the ordinate of the pixel point of the target data;
And taking the acquisition time of the target data as the abscissa of the pixel points of the target data.
In a second aspect, the present invention provides a waveform data display apparatus for use in an oximeter, the apparatus comprising:
the decision module is used for determining a waveform minimum value and a waveform maximum value according to whether the target data belongs to the data on the characteristic waveform or not; the target data are to-be-displayed data with earliest acquisition time in the sliding window; the sliding window is used for storing a plurality of data to be displayed; the characteristic waveform characterizes waveforms corresponding to the completion of primary contraction and relaxation of the heart;
the processing module is used for determining steps according to the difference value between the minimum waveform value and the maximum waveform value and the preset maximum resolution value; and determining pixel point coordinates of the target data according to the target data, the waveform minimum value and the step, and displaying waveforms according to the pixel point coordinates of the target data.
In a third aspect, the present invention provides an oximeter comprising a memory for storing a computer program and a processor for executing the waveform data display method according to any one of the preceding embodiments when the computer program is invoked.
In a fourth aspect, the present invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the waveform data display method according to any one of the preceding embodiments.
Compared with the prior art, the waveform data display method, the device, the oximeter and the storage medium provided by the embodiment of the invention determine the minimum waveform value and the maximum waveform value according to whether the target data belongs to the data on the characteristic waveform or not; the target data are to-be-displayed data with earliest acquisition time in the sliding window; the sliding window is used for storing a plurality of data to be displayed; the characteristic waveform characterizes waveforms corresponding to the completion of primary contraction and relaxation of the heart; determining a step according to a difference value between a waveform minimum value and a waveform maximum value and a preset maximum resolution value; and determining pixel point coordinates of the target data according to the target data, the waveform minimum value and the step, and displaying the waveform according to the pixel point coordinates of the target data. According to the embodiment of the invention, the waveform minimum value, the waveform maximum value and the step are determined according to the self condition of the waveform of the data to be displayed, so that the real state of each characteristic waveform can be displayed, each characteristic waveform is displayed more fully, and the influence of the front waveform and the rear waveform on the characteristic waveform display is effectively reduced.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 shows a schematic representation of the characteristic waveforms of the heart completing one contraction and relaxation.
Fig. 2 shows a schematic diagram of ideal waveform data in the prior art.
Fig. 3 shows a schematic diagram of the prior art showing an ideal waveform.
Fig. 4 is a schematic diagram of waveform data corresponding to a change in human body state in the prior art.
Fig. 5 shows a schematic diagram of a waveform showing a change in human body state in the prior art.
Fig. 6 shows a schematic diagram of waveform data corresponding to a change in finger state in the prior art.
Fig. 7 shows a schematic diagram of a prior art waveform showing a change in finger state.
Fig. 8 is a schematic diagram of a waveform data display method according to an embodiment of the present invention.
Fig. 9 shows a schematic diagram of a waveform showing a change in finger state according to an embodiment of the present invention.
Fig. 10 shows a schematic diagram of a waveform showing a change in a human body state according to an embodiment of the present invention.
Fig. 11 shows a schematic diagram showing a weak perfusion waveform according to an embodiment of the present invention.
Fig. 12 is a block diagram of a waveform data display apparatus according to an embodiment of the present invention.
Fig. 13 shows a schematic block diagram of an oximeter according to an embodiment of the present invention.
Icon: 100-oximeter; 110-memory; a 120-processor; 130-a communication module; 200-waveform data display means; 201-a decision module; 202-a processing module.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.
It is noted that relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Oximeters are mainly used to measure blood oxygen saturation and pulse rate. Blood oxygen saturation, which refers to the percentage of the blood volume that has been combined with oxygen to the total blood volume that can be combined with oxygen, is important fundamental data in clinical medicine. Pulse refers to the pulse of the superficial artery, and pulse rate is the frequency of the pulse. The pulse and heart rate of a normal person are consistent, so are the pulse rate and heart rate.
The heart, which is an important organ of the human body, continuously contracts and expands to provide the motive force of blood flow, thereby causing the blood volume in the blood vessel to change to generate pulse waves, as shown in fig. 1. The systolic phase (segment AB) in fig. 1 refers to ventricular systole with an increase in vascular filling and the diastolic phase (segment BCDE) refers to the return of blood to the heart. The positions and values of the two points A, B are used for calculating the blood oxygen saturation and the pulse rate, the point a and the point B are often referred to as feature points, the ordinate of the point a and the ordinate of the point B are respectively a minimum feature value and a maximum feature value, the waveform with the feature points is referred to as a feature waveform, and the complete period of the feature waveform is referred to as a feature period. Typically, the oximeter displays a pulse waveform for each characteristic waveform.
Therefore, people generally monitor the blood oxygen saturation and the pulse rate by using a pulse oximeter, and directly display the blood oxygen saturation and the pulse waveform to a user or medical staff through a display screen, or realize drawing the pulse waveform by using data acquired by a sensor of the blood oxygen meter through equipment, and display the pulse waveform through the display screen. The pulse oximeter in the market is usually mainly based on finger clamps, and when the state of a human body is changed, the fitting state of fingers and a sensor is changed, or the configuration parameters of the sensor of the oximeter are changed, the amplitude of the pulse waveform is influenced, so that the normal display of the pulse waveform is influenced.
Taking fig. 2 to 7 as an example, waveform display of a display screen in the prior art is described under three conditions of a normal state, a change in a human body state, and a change in a fitting state of a finger to a sensor. Fig. 2 is ideal waveform data in a normal state, wherein the waveform data in the rectangular frame is the data to be displayed in the sliding window; FIG. 3 is an ideal waveform displayed in a display screen corresponding to data to be displayed in a sliding window, and as can be seen from FIG. 3, the ideal waveform displayed in the display screen is full;
when the human body state changes, the pulse waveform shows an overall upward or downward trend, which leads to that the maximum value of the ordinate of the data to be displayed in the sliding window is larger than the maximum value of each pulse waveform data or the minimum value of the ordinate of the data to be displayed in the sliding window is smaller than the minimum value of each pulse waveform data, as shown in fig. 4, fig. 4 is waveform data of the human body state changes, and the waveform data in the rectangular frame is the data to be displayed in the sliding window; fig. 5 is a pulse waveform generated by a change in the state of the human body displayed in the display screen corresponding to the data to be displayed in the sliding window, and as can be seen from fig. 5, each waveform displayed in the display screen is not full enough.
When the finger is moved to cause the bonding state of the finger and the sensor of the oximeter to change, a pulse waveform can generate an obvious mutation area, which can cause the maximum value of the ordinate of the data to be displayed in the sliding window to be larger than the maximum value of each pulse waveform data or the minimum value of the ordinate of the data to be displayed in the sliding window to be smaller than the minimum value of each pulse waveform data, as shown in fig. 6, the waveform data of the finger state to change are shown in fig. 6, and the waveform data in the rectangular frame are the data to be displayed in the sliding window; fig. 7 is a pulse waveform generated by a change in the finger state displayed in the display screen corresponding to the data to be displayed in the sliding window, and as can be seen from fig. 7, the actual pulse waveform is compressed and then displayed in the display screen.
It can be seen that when the waveform in the display screen has a tendency to move up or down as a whole and a distinct abrupt change region occurs, the waveform display is not full or the actual pulse waveform is displayed in a compressed manner in the prior art, which may affect clinical judgment.
Based on the above, the embodiment of the invention provides a waveform data display method, a device, an oximeter and a storage medium, and the waveform minimum value, the waveform maximum value and the step are determined according to the condition of the waveform itself to which the data to be displayed belongs, so that the real state of each characteristic waveform can be displayed, each characteristic waveform is displayed more fully, and the influence of the front and rear waveforms on the display of the characteristic waveform is effectively reduced.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
The waveform data display method and the device provided by the embodiment of the invention are applied to the oximeter, and the oximeter executes the waveform data display method provided by the embodiment of the invention. In the embodiment of the present invention, the oximeter may be any one of a home oximeter, a medical oximeter, a sports oximeter, or a portable oximeter, and the present invention is not limited thereto.
Referring to fig. 8, fig. 8 shows a schematic diagram of a waveform data display method according to an embodiment of the invention, the method includes the following steps:
step S101, determining a waveform minimum value and a waveform maximum value according to whether the target data belongs to data on the characteristic waveform or not; the target data are to-be-displayed data with earliest acquisition time in the sliding window; the sliding window is used for storing a plurality of data to be displayed; the signature characterizes waveforms corresponding to the heart's completion of one contraction and relaxation.
In the embodiment of the invention, the oximeter acquires pulse data through the emission sensor and the photoelectric sensor. When the oximeter is fixed to a human body monitoring site, such as a finger, an earlobe, a wrist, etc., for example, the emission sensor emits a light beam into the finger, a part of the light is absorbed by blood and then penetrates the finger, or the light reflected by the blood is reflected back, the transmitted light passing through the finger or the reflected light reflected by the blood is detected by the photoelectric sensor, and the light signal is converted into a digital signal. The oximeter collects the digital signals processed by the sensor to process data, and the processed data to be displayed are transmitted to the sliding window for storage according to the sequence of the acquisition time and the size of the sliding window storage space.
As an implementation manner, when the oximeter processes the digital signals processed by the sensor, whether the data to be displayed belongs to the data on the characteristic waveform can be judged according to whether the acquisition time of each data to be displayed is within the waveform period of the characteristic waveform, if the acquisition time of the data to be displayed is within the waveform period of the characteristic waveform, the data to be displayed is considered to belong to the data on the characteristic waveform, and if the acquisition time of the data to be displayed is not within the waveform period of the characteristic waveform, the data to be displayed is considered not to belong to the data on the characteristic waveform;
in order to facilitate the subsequent waveform display, whether the data to be displayed belongs to the data on the characteristic waveform or not can be represented by using the characteristic flag bit, if the data to be displayed belongs to the data on the characteristic waveform, the characteristic flag bit is set to be 1 or true, and if the data to be displayed does not belong to the data on the characteristic waveform, the characteristic flag bit is set to be 0 or false. The embodiment of the present invention is not limited to what mode is specifically used to determine whether the band display data belongs to the data on the characteristic waveform.
In the embodiment of the invention, when the waveform is displayed, the oximeter acquires the first data to be displayed from the sliding window as target data, namely, selects the data to be displayed with the earliest acquisition time in the sliding window as target data, determines whether the target data belongs to the data on the characteristic waveform according to the acquisition time of the target data and the waveform period or the characteristic marker bit, and further determines the minimum value and the maximum value of the waveform. The characteristic waveforms are waveforms in fig. 1 including systole and diastole.
It should be noted that parameters such as a waveform period and a feature flag bit may be stored in the sliding window together with the data to be displayed, or may be stored in another storage area of the oximeter alone, which is not limited to the embodiment of the present invention. After the target data are taken out of the sliding window, the oximeter stores the data to be displayed in the sliding window according to the acquisition time sequence, so that the data to be displayed are always stored in the sliding window during normal operation of the oximeter.
Step S102, determining the step according to the difference between the waveform minimum value and the waveform maximum value and the preset maximum resolution value.
In the embodiment of the invention, the waveform display range in the display screen is determined according to the difference value between the waveform minimum value and the waveform maximum value, and the step of each target data is determined by combining the preset maximum resolution value.
Step S103, determining pixel point coordinates of the target data according to the target data, the waveform minimum value and the step, and displaying the waveform according to the pixel point coordinates of the target data.
In the embodiment of the invention, the target display value corresponding to the target data is determined according to the target data and the waveform minimum value, the pixel point coordinates of the target data are determined according to the target display value and the steps, and the waveform display is performed according to the pixel point coordinates of the target data.
In summary, the waveform data display method provided by the embodiment of the invention is applied to an oximeter, and determines the minimum waveform value and the maximum waveform value according to whether the target data belongs to the data on the characteristic waveform or not; the target data are to-be-displayed data with earliest acquisition time in the sliding window; the sliding window is used for storing a plurality of data to be displayed; the characteristic waveform characterizes waveforms corresponding to the completion of primary contraction and relaxation of the heart; determining a step according to a difference value between a waveform minimum value and a waveform maximum value and a preset maximum resolution value; and determining pixel point coordinates of the target data according to the target data, the waveform minimum value and the step, and displaying the waveform according to the pixel point coordinates of the target data. According to the embodiment of the invention, the waveform minimum value, the waveform maximum value and the step are determined according to the self condition of the waveform of the data to be displayed, so that the real state of each characteristic waveform can be displayed, each characteristic waveform is displayed more fully, and the influence of the front waveform and the rear waveform on the characteristic waveform display is effectively reduced.
Optionally, in practical application, assuming that the target data is data to be displayed in the waveform mutation area, the determining the waveform minimum value and the waveform maximum value in step S101 according to whether the target data belongs to the data on the characteristic waveform may include:
When the target data does not belong to the data on the characteristic waveform, taking the minimum value of the sliding window as the minimum value of the waveform; taking the maximum value of the sliding window as the maximum value of the waveform; the minimum value of the sliding window is the minimum value of the ordinate in all the data to be displayed in the sliding window; the maximum value of the sliding window is the maximum value of the ordinate in all data to be displayed in the sliding window; the ordinate in the data to be displayed is the data acquired by the sensor of the oximeter.
In the embodiment of the invention, if the feature flag bit corresponding to the target data is 0 or false, it can be determined that the target data does not belong to the data on the feature waveform, or if the acquisition time of the target data is not within the waveform period range, it can be determined that the target data does not belong to the data on the feature waveform. When the target data does not belong to the data on the characteristic waveform, it is indicated that the ordinate of the target data is greater than the ordinate maximum value of the characteristic waveform or the ordinate of the target data is less than the ordinate minimum value of the characteristic waveform, and in order to completely display the data to be displayed in the sliding window, the sliding window maximum value and the sliding window minimum value are required to be respectively used as the waveform maximum value and the waveform minimum value.
As one implementation mode, the abscissa of the data to be displayed in the sliding window is the time for the sensor to acquire the data, and the ordinate of the data to be displayed in the sliding window is the processed value of the sensor acquired data of the oximeter.
Optionally, in practical application, when the characteristic waveform includes a minimum characteristic value and a maximum characteristic value, and the target data is within the characteristic period and the ordinate is between the minimum characteristic value and the maximum characteristic value, the sub-step of determining the waveform minimum value and the waveform maximum value in step S101 according to whether the target data belongs to the data on the characteristic waveform may include:
when the target data belongs to the data on the characteristic waveform and the ordinate in the target data is in the characteristic value interval, taking the minimum value of the characteristic value interval as the waveform minimum value; taking the maximum value of the characteristic value interval as the waveform maximum value; the characteristic value interval is determined according to an ordinate minimum value and an ordinate maximum value corresponding to the systolic period of the characteristic waveform.
In the embodiment of the invention, if the feature mark corresponding to the target data is 1 or true, the data of the target data on the feature waveform can be determined, or if the acquisition time point of the target data is within the waveform period range, the data of the target data on the feature waveform can be determined, the acquisition time of the target data is obtained according to the abscissa of the target data, the belonging feature waveform is determined according to the acquisition time of the target data, the ordinate minimum value corresponding to the systolic period of the feature waveform is taken as the minimum feature value, and the ordinate maximum value corresponding to the systolic period of the feature waveform is taken as the maximum feature value.
The systolic period of the characteristic waveform refers to a period of time when the heart completes one contraction, that is, a process of rapid ejection of blood from one ventricular contraction and increase of blood vessel filling.
In one embodiment, a range of values equal to or greater than a minimum feature value and equal to or less than a maximum feature value is set as a feature value interval, and when the ordinate of the target data is in the feature value interval, it is necessary to set the minimum feature value of the feature waveform to which the target data belongs as a waveform minimum value and the maximum feature value of the feature waveform to which the target data belongs as a waveform maximum value in order to display the feature waveform truly and fully.
Optionally, in practical application, the systole is a stage of contracting cardiac muscle and pushing blood from heart to blood vessel, the intensity of blood jet is high, corresponding to the rising period of pulse waveform, and the diastole is a stage of relaxing cardiac muscle and preparing to receive blood, the blood flow intensity is relatively small, corresponding to the falling period of pulse waveform, so that the minimum and maximum values of ordinate of systole are the minimum and maximum values of characteristic waveform, and in extreme cases, there may be a scene of greater than the maximum characteristic value or less than the minimum characteristic value in diastole, and the substep of determining the minimum and maximum values of waveform in step S101 may include:
When the target data belongs to the data on the characteristic waveform and the ordinate in the target data is not in the characteristic value interval, taking the minimum value of the characteristic waveform as the minimum value of the waveform; taking the characteristic waveform maximum value as a waveform maximum value; the minimum value of the characteristic waveform is the minimum value of the ordinate of the characteristic waveform; the maximum value of the characteristic waveform is the maximum value of the ordinate of the characteristic waveform; the characteristic value interval is determined according to an ordinate minimum value and an ordinate maximum value corresponding to the systolic period of the characteristic waveform.
In the embodiment of the invention, when the ordinate of the target data is smaller than or equal to the minimum characteristic value of the belonging characteristic waveform or is larger than or equal to the maximum characteristic value of the belonging characteristic waveform, the minimum value of the ordinate of the belonging characteristic waveform of the target data is taken as the minimum value of the waveform, and the maximum value of the ordinate of the belonging characteristic waveform of the target data is taken as the maximum value of the waveform.
Optionally, in practical application, when the waveform to be displayed does not exceed the display range, displaying the data to be displayed according to the preset precision. The substeps of step S102 may include:
when the difference value between the waveform minimum value and the waveform maximum value is not larger than the maximum resolution value, taking the preset precision as a step; and determining the maximum resolution value according to the preset precision and the preset pixel number.
In the embodiment of the invention, preset precision and preset pixel number are preset in the production stage of the oximeter, wherein the preset pixel number depends on the area range of the display screen for displaying pulse waveforms, the preset precision is set according to the oximeter sensor and the circuit characteristics of the sensor, the maximum resolution value is obtained according to the preset precision and the preset pixel number, and when the difference value between the minimum value and the maximum value of the ordinate of the waveform to be displayed is not greater than the maximum resolution value, the waveform can be displayed according to the preset precision.
As an embodiment, assuming that the preset number of pixels of the oximeter is 10, the preset precision is 1, and the maximum resolution value is obtained according to the product of the preset number of pixels and the preset precision, that is, the maximum resolution value is 10. When the difference between the waveform minimum value and the waveform maximum value is 10 or less, the waveform shows a step of 1.
As yet another embodiment, assuming that the preset number of pixels of the oximeter is 10, the preset precision is P, and the maximum resolution value is obtained according to the product of the preset number of pixels and the preset precision, that is, the maximum resolution value is 10×p. When the difference between the waveform minimum and the waveform maximum is 10×p or less, the waveform shows a step of P.
Optionally, in practical applications, when the waveform to be displayed exceeds the display range, the waveform to be displayed needs to be adjusted to be within the maximum resolution value for display, and the substep of step S102 may include:
when the difference between the minimum waveform value and the maximum waveform value is larger than the maximum resolution value, determining the step according to the difference between the minimum waveform value and the maximum waveform value and the preset number of pixel points.
As an embodiment, assuming that the number of preset pixels of the oximeter is 10, the preset precision is 1, the maximum resolution value is 10 according to the product of the number of preset pixels and the preset precision, when the difference between the minimum waveform value and the maximum waveform value is greater than 10, the waveform display step is adjusted to be the ratio of the difference between the minimum waveform value and the maximum waveform value to the number of preset pixels, that is, the result of dividing the difference between the minimum waveform value and the maximum waveform value by 10 is taken as the step of the characteristic waveform to which the target data belongs.
As still another embodiment, assuming that the number of preset pixels of the oximeter is 10, the preset precision is P, and the maximum resolution value is 10×p according to the product of the number of preset pixels and the preset precision, when the difference between the waveform minimum value and the waveform maximum value is greater than 10×p, the result of dividing the difference between the waveform minimum value and the waveform maximum value by 10 is taken as the step of the characteristic waveform to which the target data belongs.
Optionally, in practical applications, the pixel coordinates of the target data include a pixel abscissa and a pixel ordinate, and the substep of determining the pixel coordinates of the target data according to the target data, the waveform minimum value, and the step in step S103 may include:
calculating a difference value between an ordinate in the target data and a waveform minimum value to obtain a target difference value; calculating the ratio of the target difference value to the step to obtain the ordinate of the pixel point of the target data; and taking the acquisition time of the target data as the abscissa of the pixel points of the target data.
In the embodiment of the invention, the pixel coordinates of the target data can be lightened so that all the lightened pixel coordinates are connected into a curve, or all the pixel ordinate on the pixel ordinate of the target data corresponding to the pixel abscissa of the target data are lightened so that all the unlit pixel coordinates form a waveform diagram; or lighting all pixel coordinates below the pixel ordinate of the target data corresponding to the same pixel abscissa of the target data, so that all the lighted pixel coordinates form a waveform diagram. The embodiment of the present invention is not limited in this regard. The user or medical staff can primarily judge the signal intensity, namely the perfusion intensity by checking the pixel lighting range of each characteristic waveform in the display screen.
In order to more clearly illustrate the waveform data display method provided by the embodiment of the present invention, an exemplary description is made in connection with the comparison of the prior art.
As an implementation manner, continuing to take fig. 6 as an example, assuming that the waveform data in the rectangular frame is the data to be displayed stored in the sliding window, it can be seen that the first half of the data to be displayed in the sliding window is not in the characteristic period, that is, is not the data on the characteristic waveform, and the second half of the data is in the characteristic period, that is, is the data on the characteristic waveform.
In the prior art, each data to be displayed adopts a sliding window minimum value and a sliding window maximum value to divide display grades, each waveform is displayed by using the same step, as shown in fig. 7, the display amplitude of a characteristic waveform (namely a pulse waveform) in a display screen is very small under the influence of the waveform of a first half abrupt change area, the maximum characteristic value of the characteristic waveform in the display screen is approximately 3, the fluctuation state of the pulse waveform cannot be normally displayed, and the real pulse waveform is compressed. In the embodiment of the invention, the minimum value and the maximum value of the waveform are determined according to the actual condition of each target data, the pixel point coordinates of the target data are determined according to the minimum value, the maximum value and the preset maximum resolution value of the waveform, the waveform is displayed according to the pixel point coordinates of the target data, the maximum characteristic value of the characteristic waveform in the display screen is approximately 9 or 10, each characteristic waveform can be displayed more truly, and the characteristic waveform is effectively prevented from being compressed, as shown in fig. 9.
As yet another embodiment, continuing taking fig. 4 as an example, assuming that the waveform data in the rectangular frame is the data to be displayed stored in the sliding window, it can be seen that the partial value of the second half of each characteristic waveform in the sliding window is smaller than the minimum characteristic value of the characteristic waveform, and there is a tendency to move down as a whole.
In the prior art, each data to be displayed adopts a sliding window minimum value and a sliding window maximum value to divide the display grade, as shown in fig. 5, each characteristic waveform (i.e. pulse waveform) is compressed and becomes smaller within the range of the number of preset pixel points, and the details of each characteristic waveform cannot be fully displayed. In the embodiment of the present invention, the display of each characteristic waveform is shown in fig. 10, so that the state of each characteristic waveform can be better displayed.
Therefore, in the embodiment of the invention, the waveform minimum value, the waveform maximum value and the step are determined according to the condition of the waveform of the data to be displayed, so that the real state of each characteristic waveform can be displayed, each characteristic waveform is displayed more fully, and the influence of the front waveform and the rear waveform on the display of the characteristic waveform is effectively reduced.
The maximum characteristic value of each characteristic waveform can be used for representing the blood perfusion intensity, the blood perfusion degree can represent the blood volume of a measurement part, and the maximum characteristic value can be clinically taken as a consideration factor for judging whether the human body is hypotensive, ischemic and the like. Since the display screen can display the real state of each characteristic waveform, the weak perfusion can be clinically judged according to the intensity of the characteristic waveform signals in the display screen, and when the maximum characteristic value of each characteristic waveform in the display screen is relatively smaller, the weak perfusion is clinically judged, as shown in fig. 11.
Based on the same inventive concept, the embodiment of the invention also provides a waveform data display device. The basic principle and the technical effects are the same as those of the above embodiments, and for brevity, reference is made to the corresponding matters in the above embodiments where the description of the present embodiment is omitted.
Referring to fig. 12, fig. 12 is a block diagram illustrating a waveform data display apparatus 200 according to an embodiment of the invention. The waveform data display device 200 is applied to an oximeter, and the waveform data display device 200 comprises a decision module 201 and a processing module 202.
A decision module 201, configured to determine a waveform minimum value and a waveform maximum value according to whether the target data belongs to data on the characteristic waveform; the target data are to-be-displayed data with earliest acquisition time in the sliding window; the sliding window is used for storing a plurality of data to be displayed; the signature characterizes waveforms corresponding to the heart's completion of one contraction and relaxation.
A processing module 202, configured to determine a step according to a difference between the waveform minimum value and the waveform maximum value and a preset maximum resolution value; and determining pixel point coordinates of the target data according to the target data, the waveform minimum value and the step, and displaying the waveform according to the pixel point coordinates of the target data.
In summary, the waveform data display device provided by the embodiment of the invention is applied to an oximeter, and the waveform data display device comprises a decision module and a processing module, wherein the decision module is used for determining a waveform minimum value and a waveform maximum value according to whether target data belongs to data on a characteristic waveform or not; the target data are to-be-displayed data with earliest acquisition time in the sliding window; the sliding window is used for storing a plurality of data to be displayed; the signature characterizes waveforms corresponding to the heart's completion of one contraction and relaxation. The processing module is used for determining steps according to the difference value between the minimum waveform value and the maximum waveform value and a preset maximum resolution value; and determining pixel point coordinates of the target data according to the target data, the waveform minimum value and the step, and displaying the waveform according to the pixel point coordinates of the target data. According to the embodiment of the invention, the waveform minimum value, the waveform maximum value and the step are determined according to the self condition of the waveform of the data to be displayed, so that the real state of each characteristic waveform can be displayed, each characteristic waveform is displayed more fully, and the influence of the front waveform and the rear waveform on the characteristic waveform display is effectively reduced.
Optionally, the decision module 201 is specifically configured to take the sliding window minimum value as the waveform minimum value when the target data does not belong to the data on the characteristic waveform; taking the maximum value of the sliding window as the maximum value of the waveform; the minimum value of the sliding window is the minimum value of the ordinate in all the data to be displayed in the sliding window; the maximum value of the sliding window is the maximum value of the ordinate in all data to be displayed in the sliding window; the ordinate in the data to be displayed is the data acquired by the sensor of the oximeter.
Optionally, the decision module 201 is specifically configured to take, as the waveform minimum value, the minimum value of the eigenvalue interval when the target data belongs to data on the eigenvalue and the ordinate in the target data is in the eigenvalue interval; taking the maximum value of the characteristic value interval as the waveform maximum value; the characteristic value interval is determined according to an ordinate minimum value and an ordinate maximum value corresponding to the systolic period of the characteristic waveform.
Optionally, the decision module 201 is specifically configured to take the minimum value of the characteristic waveform as the minimum value of the waveform when the target data belongs to the data on the characteristic waveform and the ordinate in the target data is not in the characteristic value interval; taking the characteristic waveform maximum value as a waveform maximum value; the minimum value of the characteristic waveform is the minimum value of the ordinate of the characteristic waveform; the maximum value of the characteristic waveform is the maximum value of the ordinate of the characteristic waveform; the characteristic value interval is determined according to an ordinate minimum value and an ordinate maximum value corresponding to the systolic period of the characteristic waveform.
Optionally, the processing module 202 is specifically configured to take the preset precision as a step when the difference between the minimum waveform value and the maximum waveform value is not greater than the maximum resolution value; and determining the maximum resolution value according to the preset precision and the preset pixel number.
Optionally, the processing module 202 is specifically configured to determine the step according to the difference between the minimum waveform value and the maximum waveform value and the preset number of pixel points when the difference between the minimum waveform value and the maximum waveform value is greater than the maximum resolution value.
Optionally, the pixel coordinates of the target data include a pixel abscissa and a pixel ordinate; the processing module 202 is specifically configured to calculate a difference between an ordinate in the target data and a waveform minimum value to obtain a target difference; calculating the ratio of the target difference value to the step to obtain the ordinate of the pixel point of the target data; and taking the acquisition time of the target data as the abscissa of the pixel points of the target data.
Referring to fig. 13, fig. 13 is a schematic block diagram of an oximeter 100 according to an embodiment of the present invention. The oximeter 100 may be a home oximeter, a medical oximeter, a sports oximeter, a portable oximeter, or the like. Oximeter 100 includes a memory 110, a processor 120, and a communication module 130. The memory 110, the processor 120, and the communication module 130 are electrically connected directly or indirectly to each other to realize data transmission or interaction. For example, the components may be electrically connected to each other via one or more communication buses or signal lines.
Wherein the memory 110 is used for storing programs or data. The Memory 110 may be, but is not limited to, random access Memory (Random Access Memory, RAM), read Only Memory (ROM), programmable Read Only Memory (Programmable Read-Only Memory, PROM), erasable Read Only Memory (Erasable Programmable Read-Only Memory, EPROM), electrically erasable Read Only Memory (Electric Erasable Programmable Read-Only Memory, EEPROM), etc.
The processor 120 is used to read/write data or programs stored in the memory 110 and perform corresponding functions. For example, the waveform data display method disclosed in the above embodiments may be implemented when a computer program stored in the memory 110 is executed by the processor 120.
The communication module 130 is used for establishing a communication connection between the oximeter 100 and other communication terminals through a network, and for transceiving data through the network.
It should be understood that the configuration shown in fig. 13 is merely a schematic diagram of the configuration of oximeter 100, and that oximeter 100 may also include more or fewer components than those shown in fig. 13, or have a different configuration than that shown in fig. 13. The components shown in fig. 13 may be implemented in hardware, software, or a combination thereof.
The embodiments of the present invention also provide a computer-readable storage medium having stored thereon a computer program which, when executed by the processor 120, implements the waveform data display method disclosed in the above embodiments.
In the several embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other manners. The apparatus embodiments described above are merely illustrative, for example, of the flowcharts and block diagrams in the figures that illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, functional modules in the embodiments of the present invention may be integrated together to form a single part, or each module may exist alone, or two or more modules may be integrated to form a single part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A waveform data display method, characterized by being applied to an oximeter, comprising:
determining a waveform minimum value and a waveform maximum value according to whether the target data belongs to the data on the characteristic waveform or not; the target data are to-be-displayed data with earliest acquisition time in the sliding window; the sliding window is used for storing a plurality of data to be displayed; the characteristic waveform characterizes waveforms corresponding to the completion of primary contraction and relaxation of the heart;
determining a step according to a difference value between a waveform minimum value and a waveform maximum value and a preset maximum resolution value;
and determining pixel point coordinates of the target data according to the target data, the waveform minimum value and the step, and displaying waveforms according to the pixel point coordinates of the target data.
2. The method of displaying waveform data according to claim 1, wherein the step of determining the waveform minimum value and the waveform maximum value according to whether the target data belongs to data on the characteristic waveform comprises:
when the target data does not belong to the data on the characteristic waveform, taking a sliding window minimum value as the waveform minimum value; taking the maximum value of the sliding window as the maximum value of the waveform; the minimum value of the sliding window is the minimum value of the ordinate in all data to be displayed in the sliding window; the maximum value of the sliding window is the maximum value of the ordinate in all data to be displayed in the sliding window; and the ordinate in the data to be displayed is the acquired data of the sensor of the oximeter.
3. The method of displaying waveform data according to claim 1, wherein the step of determining the waveform minimum value and the waveform maximum value according to whether the target data belongs to data on the characteristic waveform comprises:
when the target data belongs to the data on the characteristic waveform and the ordinate in the target data is in a characteristic value interval, taking the minimum value of the characteristic value interval as the waveform minimum value; taking the maximum value of the characteristic value interval as the maximum value of the waveform; and the characteristic value interval is determined according to the ordinate minimum value and the ordinate maximum value corresponding to the systolic period of the characteristic waveform.
4. The method of displaying waveform data according to claim 1, wherein the step of determining the waveform minimum value and the waveform maximum value according to whether the target data belongs to data on the characteristic waveform comprises:
when the target data belongs to the data on the characteristic waveform and the ordinate in the target data is not in a characteristic value interval, taking a characteristic waveform minimum value as the waveform minimum value; taking the characteristic waveform maximum value as the waveform maximum value; the minimum value of the characteristic waveform is the minimum value of the ordinate of the characteristic waveform; the maximum value of the characteristic waveform is the maximum value of the ordinate of the characteristic waveform; and the characteristic value interval is determined according to the ordinate minimum value and the ordinate maximum value corresponding to the systolic period of the characteristic waveform.
5. The method of claim 1, wherein the step of determining the step according to the difference between the minimum value of the waveform and the maximum value of the waveform and the preset maximum resolution value comprises:
when the difference value between the waveform minimum value and the waveform maximum value is not larger than the maximum resolution value, taking the preset precision as a step; and the maximum resolution value is determined according to the preset precision and the preset pixel point number.
6. The method of claim 1, wherein the step of determining the step according to the difference between the minimum value of the waveform and the maximum value of the waveform and the preset maximum resolution value comprises:
when the difference between the minimum waveform value and the maximum waveform value is larger than the maximum resolution value, determining the step according to the difference between the minimum waveform value and the maximum waveform value and the preset number of pixel points.
7. The waveform data display method according to claim 1, wherein the pixel coordinates of the target data include a pixel abscissa and a pixel ordinate; the step of determining pixel coordinates of the target data according to the target data, the waveform minimum value and the step includes:
Calculating a difference value between an ordinate in the target data and the waveform minimum value to obtain a target difference value;
calculating the ratio of the target difference value to the step to obtain the ordinate of the pixel point of the target data;
and taking the acquisition time of the target data as the abscissa of the pixel points of the target data.
8. A waveform data display apparatus for use with an oximeter, the apparatus comprising:
the decision module is used for determining a waveform minimum value and a waveform maximum value according to whether the target data belongs to the data on the characteristic waveform or not; the target data are to-be-displayed data with earliest acquisition time in the sliding window; the sliding window is used for storing a plurality of data to be displayed; the characteristic waveform characterizes waveforms corresponding to the completion of primary contraction and relaxation of the heart;
the processing module is used for determining steps according to the difference value between the minimum waveform value and the maximum waveform value and the preset maximum resolution value; and determining pixel point coordinates of the target data according to the target data, the waveform minimum value and the step, and displaying waveforms according to the pixel point coordinates of the target data.
9. An oximeter comprising a memory for storing a computer program and a processor for executing the waveform data display method according to any one of claims 1 to 7 when the computer program is called.
10. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when executed by a processor, implements the waveform data display method according to any one of claims 1 to 7.
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