CN113133750A - Blood pressure detection device and equipment - Google Patents
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- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
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- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
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Abstract
The invention discloses a blood pressure detection device and equipment, compared with the existing mode of acquiring pulse PPG signals of a subject to be detected, then carrying out waveform analysis on the pulse PPG signals to obtain pulse characteristic values, and then determining blood pressure values according to the pulse characteristic values, in the invention, when an acquisition module receives a blood pressure detection instruction, determining an area to be detected according to the blood pressure detection instruction, and acquiring reflected light information and pressure information of the area to be detected, a processing module generates an initial pulse waveform diagram according to the reflected light information, and generates an initial pressure waveform diagram according to the pressure information, and a generation module generates blood pressure detection results according to the initial pressure waveform diagram and the initial pulse waveform diagram, thereby overcoming the defects of low accuracy and poor reliability of the blood pressure detection results in the prior art, optimizing the blood pressure detection process, and correcting the pulse waveform diagram through pressure values in real time, thereby improving the accuracy and reliability of the blood pressure detection result.
Description
Technical Field
The invention relates to the technical field of data processing, in particular to a blood pressure detection device and equipment.
Background
With the development and application of photoplethysmography (PPG), the health functions of consumer electronics have gradually extended from the fields of simple heart rate, etc. to the fields of blood pressure, respiration, etc.
The existing blood pressure detection method is to place a finger of a measured object on a sensor of a blood pressure detection device to obtain a pulse PPG signal, then perform waveform analysis on the pulse PPG signal to obtain a pulse characteristic value, and finally determine a blood pressure value according to the pulse characteristic value.
However, the above detection method does not consider the influence of the finger pressure on the detection result during detection, and thus the accuracy and reliability of the blood pressure detection result are low.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a blood pressure detection device and equipment, and aims to solve the technical problems that the accuracy of a blood pressure detection result is low and the reliability is poor due to the fact that the influence of finger pressure on the detection result during detection is not considered in the prior art.
In order to achieve the above object, the present invention also provides a blood pressure detecting device, including: the device comprises an acquisition module, a processing module and a generation module;
the acquisition module is used for determining a to-be-detected area according to a blood pressure detection instruction when the blood pressure detection instruction is received, and acquiring reflected light information and pressure information of the to-be-detected area;
the processing module is used for generating an initial pulse oscillogram according to the reflected light information and generating an initial pressure oscillogram according to the pressure information;
and the generating module is used for generating a blood pressure detection result according to the initial pressure oscillogram and the initial pulse oscillogram.
Optionally, the generating module is further configured to adjust the initial pulse waveform diagram according to the initial pressure waveform diagram to obtain a target pulse waveform diagram;
the generation module is further used for determining a current blood pressure value according to the target pulse oscillogram and generating a blood pressure detection result according to the current blood pressure value.
Optionally, the generating module is further configured to compare and analyze the initial pressure waveform diagram and the initial pulse waveform diagram, and determine a signal synchronization parameter according to a comparison and analysis result;
the generation module is further configured to adjust the initial pulse oscillogram according to the signal synchronization parameter to obtain a candidate pulse oscillogram;
the generating module is further configured to perform parameter extraction on the initial pressure oscillogram to obtain a pressure parameter value;
the generating module is further configured to adjust the candidate pulse oscillogram according to the pressure parameter value to obtain a target pulse oscillogram.
Optionally, the generating module is further configured to search a preset mapping relation table for a pulse correction value corresponding to the pressure parameter value, where the preset mapping relation table includes a correspondence between the pressure parameter value and the pulse correction value;
the generation module is further configured to correct the candidate pulse oscillogram according to the pulse parameter value to obtain a target pulse oscillogram.
Optionally, the generating module is further configured to perform feature extraction on the target pulse waveform diagram to obtain pulse feature information;
the generation module is further configured to search for a current blood pressure value corresponding to the pulse feature information, and generate a blood pressure detection result according to the current blood pressure value.
Optionally, the obtaining module is further configured to determine, when a blood pressure detection instruction is received, an area to be detected according to the blood pressure detection instruction;
the acquisition module is also used for controlling the sensor of the area to be detected to synchronously sample the reflected light information and the pressure information of the area to be detected.
Optionally, the processing module is further configured to extract information from the reflected light information to obtain a first analog signal, and generate an initial pulse waveform according to the first analog signal;
the processing module is further configured to extract information from the pressure information, obtain a second analog signal, and generate an initial pressure oscillogram according to the second analog signal.
Optionally, the processing module is further configured to perform information extraction on the reflected light information to obtain a first analog signal;
the processing module is further configured to perform analog-to-digital conversion on the first analog signal to obtain a first digital signal;
the processing module is further configured to filter the first data signal through a preset filtering model to obtain a target digital signal, and generate an initial pulse oscillogram according to the target digital signal.
Optionally, the processing module is further configured to extract information from the pressure information to obtain a second analog signal;
the processing module is further configured to perform analog-to-digital conversion on the second analog signal to obtain a second digital signal, and generate an initial pressure oscillogram according to the second digital signal.
Furthermore, to achieve the above object, the present invention also proposes a blood pressure detecting apparatus, which includes a memory, a processor, and a blood pressure detecting program stored on the memory and executable on the processor, the blood pressure detecting program being configured to implement the steps of:
when a blood pressure detection instruction is received, determining a region to be detected according to the blood pressure detection instruction, and acquiring reflected light information and pressure information of the region to be detected;
generating an initial pulse waveform according to the reflected light information, and generating an initial pressure waveform according to the pressure information;
and generating a blood pressure detection result according to the initial pressure oscillogram and the initial pulse oscillogram.
The invention discloses an acquisition module, which is used for determining a to-be-detected area according to a blood pressure detection instruction and acquiring reflected light information and pressure information of the to-be-detected area when the blood pressure detection instruction is received; the processing module is used for generating an initial pulse oscillogram according to the reflected light information and generating an initial pressure oscillogram according to the pressure information; the generating module is used for generating a blood pressure detection result according to the initial pressure oscillogram and the initial pulse oscillogram; compared with the existing mode of acquiring the pulse PPG signal of the object to be tested, then performing waveform analysis on the pulse PPG signal to obtain a pulse characteristic value, and then determining the blood pressure value according to the pulse characteristic value, the invention simultaneously acquires the reflected light information and the pressure information of the area to be tested, generates an initial pulse oscillogram according to the reflected light information, generates an initial pressure oscillogram according to the pressure information, and generates a blood pressure detection result according to the initial pressure oscillogram and the initial pulse oscillogram, thereby overcoming the defects of low accuracy and poor reliability of the blood pressure detection result in the prior art, optimizing the blood pressure detection process, correcting the pulse oscillogram through the pressure value in real time, and further improving the accuracy and reliability of the blood pressure detection result.
Drawings
FIG. 1 is a schematic structural diagram of a blood pressure detecting device in a hardware operating environment according to an embodiment of the present invention;
fig. 2 is a block diagram of the blood pressure detecting device according to the first embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a blood pressure detecting device in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the blood pressure detecting apparatus may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), and the optional user interface 1003 may further include a standard wired interface and a wireless interface, and the wired interface for the user interface 1003 may be a USB interface in the present invention. The network interface 1004 may optionally include a standard wired interface, a WIreless interface (e.g., a WIreless-FIdelity (WI-FI) interface). The Memory 1005 may be a Random Access Memory (RAM) Memory or a Non-volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration shown in FIG. 1 does not constitute a limitation of the blood pressure sensing device and may include more or fewer components than shown, or some components may be combined, or a different arrangement of components.
As shown in FIG. 1, memory 1005, identified as one type of computer storage medium, may include an operating system, a network communication module, a user interface module, and a blood pressure detection program.
In the blood pressure detecting device shown in fig. 1, the network interface 1004 is mainly used for connecting to a background server and performing data communication with the background server; the user interface 1003 is mainly used for connecting user equipment; the blood pressure detection device calls a blood pressure detection program stored in the memory 1005 through the processor 1001 and executes the steps of the following method:
when a blood pressure detection instruction is received, determining a region to be detected according to the blood pressure detection instruction, and acquiring reflected light information and pressure information of the region to be detected;
generating an initial pulse waveform according to the reflected light information, and generating an initial pressure waveform according to the pressure information;
and generating a blood pressure detection result according to the initial pressure oscillogram and the initial pulse oscillogram.
Referring to fig. 2, fig. 2 is a block diagram of a blood pressure detecting device according to a first embodiment of the present invention. The blood pressure detection device includes: an acquisition module 10, a processing module 20 and a generation module 30.
The obtaining module 10 is configured to, when receiving a blood pressure detection instruction, determine an area to be detected according to the blood pressure detection instruction, and obtain reflected light information and pressure information of the area to be detected.
It should be understood that the blood pressure detecting device may be an electronic device such as a smart watch and a smart phone, and may also be other devices that can achieve the same or similar functions.
It can be understood that the blood pressure detection instruction may be a control instruction input by the user through a user interaction interface of the smart watch, or may be a control instruction input by the user through a terminal device that establishes a communication connection with the smart watch in advance. The terminal device may be a smart band, a mobile phone, etc., which is not limited in this embodiment.
It should be noted that the region to be detected may be composed of a photoplethysmography (PPG) sensor region and a pressure sensor region. Wherein the PPG sensor area and the pressure sensor area are simultaneously coverable by a finger in order to simultaneously acquire PPG and pressure information. However, the placement positions of the PPG sensor and the pressure sensor in the blood pressure detection device are not limited in this embodiment and other embodiments.
In specific implementation, for example, a user may input a blood pressure detection instruction on the smart watch, and when the smart watch receives the blood pressure detection instruction, the smart watch activates the to-be-detected region according to the blood pressure detection instruction, and displays the to-be-detected region to remind the user to place a finger in the to-be-detected region.
The reflected light information may be reflected light information formed by the reflection of the detection light through the skin after the smart watch emits the detection light to the region to be detected. The detection light may be green detection light or other color detection light, and in the present embodiment, green detection light is taken as an example for description.
It should be understood that the acquiring of the reflected light information of the to-be-detected area may be acquiring the reflected light information of the to-be-detected area through a preset sensor. The preset sensor may be a PPG sensor preset by a manufacturer of the smart watch.
It should be noted that the pressure information may be pressure information between the measured object and the sensor, which is not limited in this embodiment.
It should be understood that the acquiring of the pressure information of the region to be detected may be acquiring the pressure information by a sensor previously provided in the region to be detected. The sensor preset in the area to be detected may be a pressure sensor preset in the area to be detected, which is not limited in this example.
The processing module 20 is configured to generate an initial pulse waveform according to the reflected light information, and generate an initial pressure waveform according to the pressure information.
It is understood that the generation of the initial pulse waveform map according to the reflected light information may be a waveform extraction of the reflected light information to obtain the initial pulse waveform map.
Further, it is considered that in practical applications, the reflected light information includes not only heart rate information but also interference information. To overcome this defect, the processing module 20 is further configured to obtain reflected light information of the area to be detected, extract information of the reflected light information, obtain a first analog signal, perform analog-to-digital conversion on the first analog signal, obtain a first digital signal, filter the first data signal through a preset filtering model, obtain a target digital signal, and generate an initial pulse waveform according to the target digital signal.
It should be noted that the preset filtering model may be preset by a manufacturer of the smart watch, and this example is not limited thereto. In this embodiment, a narrow band pass filter model of 0.4Hz to 4Hz is taken as an example for explanation.
It is understood that the generating of the initial pressure waveform map according to the pressure information may be a waveform extraction of the pressure information to obtain the initial pressure waveform map.
Further, in order to overcome the defect that the pressure information not only includes pressure information but also includes interference information, the processing module 20 is further configured to acquire the pressure information of the area to be detected, extract information from the pressure information, acquire a second analog signal, perform analog-to-digital conversion on the second analog signal, acquire a second digital signal, and generate an initial pressure oscillogram according to the second digital signal.
The generating module 30 is configured to generate a blood pressure detection result according to the initial pressure waveform diagram and the initial pulse waveform diagram.
It should be understood that the generation of the blood pressure detection result according to the initial pressure waveform diagram and the initial pulse waveform diagram may be a comparison analysis of the initial pressure waveform diagram and the initial pulse waveform diagram, and the blood pressure detection result is generated according to the analysis result.
Further, in order to obtain a blood pressure detection result quickly, the generating module 30 is further configured to adjust the initial pulse waveform diagram according to the initial pressure waveform diagram to obtain a target pulse waveform diagram, determine a current blood pressure value according to the target pulse waveform diagram, and generate a blood pressure detection result according to the current blood pressure value.
Furthermore, in order to avoid the influence of pressure variation on the pulse waveform diagram and improve the accuracy of the pulse waveform diagram, the generating module 30 is further configured to compare and analyze the initial pressure waveform diagram and the initial pulse waveform diagram, determine a signal synchronization parameter according to a comparison and analysis result, adjust the initial pulse waveform diagram according to the signal synchronization parameter to obtain a candidate pulse waveform diagram, perform parameter extraction on the initial pressure waveform diagram to obtain a pressure parameter value, and adjust the candidate pulse waveform diagram according to the pressure parameter value to obtain a target pulse waveform diagram.
In the invention, an obtaining module 10 is disclosed, which is used for determining a region to be detected according to a blood pressure detection instruction when the blood pressure detection instruction is received, and obtaining reflected light information and pressure information of the region to be detected; the processing module 20 is configured to generate an initial pulse waveform according to the reflected light information, and generate an initial pressure waveform according to the pressure information; a generating module 30, configured to generate a blood pressure detection result according to the initial pressure waveform diagram and the initial pulse waveform diagram; compared with the existing mode of acquiring the pulse PPG signal of the object to be tested, then performing waveform analysis on the pulse PPG signal to obtain a pulse characteristic value, and then determining the blood pressure value according to the pulse characteristic value, the invention simultaneously acquires the reflected light information and the pressure information of the area to be tested, generates an initial pulse oscillogram according to the reflected light information, generates an initial pressure oscillogram according to the pressure information, and generates a blood pressure detection result according to the initial pressure oscillogram and the initial pulse oscillogram, thereby overcoming the defects of low accuracy and poor reliability of the blood pressure detection result in the prior art, optimizing the blood pressure detection process, correcting the pulse oscillogram through the pressure value in real time, and further improving the accuracy and reliability of the blood pressure detection result.
A second embodiment of the blood pressure monitor of the present invention is proposed based on the embodiment shown in fig. 2.
In a second embodiment, the obtaining module 10 is further configured to determine, when receiving a blood pressure detection instruction, an area to be detected according to the blood pressure detection instruction.
It should be noted that the region to be detected may be composed of a photoplethysmography (PPG) sensor region and a pressure sensor region. Wherein the PPG sensor area and the pressure sensor area are simultaneously coverable by a finger in order to simultaneously acquire PPG and pressure information. However, the placement positions of the PPG sensor and the pressure sensor in the blood pressure detection device are not limited in this embodiment and other embodiments.
The obtaining module 10 is further configured to control the sensor of the to-be-detected region to synchronously sample reflected light information and pressure information of the to-be-detected region.
It should be understood that the sensors of the area to be detected are referred to as PPG sensors and pressure sensors. The synchronous sampling of the reflected light information and the pressure information of the area to be detected by the sensor for controlling the area to be detected can be realized by controlling the PPG sensor and the pressure sensor to synchronously sample through the analog switch, so that the influence of different time delays caused by circuit factors is reduced.
In the second embodiment, the processing module 20 is further configured to extract information from the reflected light information, obtain a first analog signal, and generate an initial pulse waveform diagram according to the first analog signal.
It should be understood that generating the initial pulse waveform map from the first analog signal may be directly taking a signal image corresponding to the first analog signal as the initial pulse waveform map.
Further, in consideration of the fact that the accuracy of the signal image corresponding to the first analog signal is low, the processing module 20 is further configured to extract information of the reflected light information to obtain the first analog signal;
the processing module 20 is further configured to perform analog-to-digital conversion on the first analog signal to obtain a first digital signal;
the processing module 20 is further configured to filter the first data signal through a preset filtering model to obtain a target digital signal, and generate an initial pulse waveform diagram according to the target digital signal.
It is understood that performing analog-to-digital conversion on the first analog signal to obtain the first digital signal may perform analog-to-digital conversion on the first analog signal by using a preset analog-to-digital conversion model to obtain the first digital signal. The preset analog-to-digital conversion model may be preset by a manufacturer of the smart phone, which is not limited in this embodiment.
It should be noted that the preset filtering model may be preset by a manufacturer of the smart phone, which is not limited in this example. In this embodiment, a narrow band pass filter model of 0.4Hz to 4Hz is taken as an example for explanation.
In a second embodiment, the reflected light information of the area to be detected is acquired, information extraction is performed on the reflected light information, a first analog signal is acquired, analog-to-digital conversion is performed on the first analog signal, a first digital signal is acquired, the first data signal is filtered through a preset filtering model, a target digital signal is acquired, and an initial pulse waveform diagram is generated according to the target digital signal, so that the defect that the reflected light information in the prior art not only contains heart rate information, but also contains interference information is overcome, and the accuracy of the initial pulse waveform diagram can be improved.
The processing module 20 is further configured to extract information from the pressure information, obtain a second analog signal, and generate an initial pressure oscillogram according to the second analog signal.
It should be understood that generating the initial pressure waveform map from the second analog signal may be directly taking a signal image corresponding to the second analog signal as the initial pressure waveform map.
Further, in consideration of the fact that the accuracy of the signal image corresponding to the second analog signal is low, the processing module 20 is further configured to extract information from the pressure information to obtain the second analog signal;
the processing module 20 is further configured to perform analog-to-digital conversion on the second analog signal to obtain a second digital signal, and generate an initial pressure oscillogram according to the second digital signal.
It is understood that the analog-to-digital converting the second analog signal to obtain the second digital signal may be an analog-to-digital converting the second analog signal by using a preset analog-to-digital conversion model to obtain the second digital signal.
In a second embodiment, a second analog signal is obtained by obtaining pressure information of the area to be detected and extracting the pressure information, an analog-to-digital conversion is performed on the second analog signal to obtain a second digital signal, and an initial pressure oscillogram is generated according to the second digital signal, so that the defect that the pressure information in the prior art not only contains the pressure information but also contains interference information is overcome, and the accuracy of the initial pressure oscillogram can be improved.
In a second embodiment, the generating module 30 is further configured to adjust the initial pulse waveform diagram according to the initial pressure waveform diagram to obtain a target pulse waveform diagram.
It should be understood that the adjustment of the initial pulse waveform map according to the initial pressure waveform map to obtain the target pulse waveform map may be a comparison analysis of the initial pressure waveform map and the initial pulse waveform map, and the adjustment of the initial pulse waveform map according to the analysis result to obtain the target pulse waveform map.
Further, in order to avoid the influence of pressure variation on the pulse waveform diagram and improve the accuracy of the pulse waveform diagram, the generating module 30 is further configured to compare and analyze the initial pressure waveform diagram and the initial pulse waveform diagram, determine a signal synchronization parameter according to a comparison and analysis result, adjust the initial pulse waveform diagram according to the signal synchronization parameter to obtain a candidate pulse waveform diagram, perform parameter extraction on the initial pressure waveform diagram to obtain a pressure parameter value, and adjust the candidate pulse waveform diagram according to the pressure parameter value to obtain a target pulse waveform diagram.
The generating module 30 is further configured to determine a current blood pressure value according to the target pulse oscillogram, and generate a blood pressure detection result according to the current blood pressure value.
It can be understood that, determining the current blood pressure value according to the target pulse waveform diagram, and generating the blood pressure detection result according to the current blood pressure value may be to perform feature extraction on the target pulse waveform diagram, obtain pulse feature information, search for the current blood pressure value corresponding to the pulse feature information, and generate the blood pressure detection result according to the current blood pressure value.
It should be understood that generating a blood pressure detection result from the current blood pressure value may be directly taking the current blood pressure value as the blood pressure detection result; or judging whether the current blood pressure value is larger than a preset threshold value, and generating a blood pressure detection result according to the judgment result. For example, when the current blood pressure value is greater than the preset threshold, the blood pressure detection result is that the blood pressure is too high. The preset threshold may be preset by a manufacturer of the smart phone, which is not limited in this embodiment.
In a second embodiment, a target pulse waveform diagram is obtained by adjusting the initial pulse waveform diagram according to the initial pressure waveform diagram, a current blood pressure value is determined according to the target pulse waveform diagram, and a blood pressure detection result is generated according to the current blood pressure value, so that a blood pressure detection result can be generated quickly.
A third embodiment of the blood pressure monitor of the present invention is proposed based on the embodiment shown in fig. 2.
In a third embodiment, the generating module 30 is further configured to compare and analyze the initial pressure waveform diagram and the initial pulse waveform diagram, and determine a signal synchronization parameter according to a result of the comparison and analysis.
It should be understood that there may be instances where the initial pressure waveform map and the initial pulse waveform map are not synchronized in time. Therefore, it is necessary to perform signal synchronization processing on the initial pressure waveform map and the initial pulse waveform map.
It should be noted that the signal synchronization parameter may be a time sequence difference between the initial pulse waveform diagram and the initial pulse waveform diagram, which is not limited in this embodiment.
It will be appreciated that the signal synchronization parameters may be obtained by way of hardware synchronization circuitry and software time stamping.
The generating module 30 is further configured to adjust the initial pulse waveform diagram according to the signal synchronization parameter, so as to obtain a candidate pulse waveform diagram.
It is understood that, the adjusting of the initial pulse waveform map according to the signal synchronization parameter to obtain the candidate pulse waveform map may be shifting the initial pulse waveform map according to the signal synchronization parameter to obtain the candidate pulse waveform map, so as to synchronize the candidate pulse waveform map with the initial pressure waveform map signal.
It should be understood that the waveform amplitude at different time points of the pulse waveform map can also be adjusted according to the pressure information at different time points. Wherein there is a correlation between the pressure and the amplitude of the oscillogram of the pulse.
The generating module 30 is further configured to perform parameter extraction on the initial pressure waveform diagram to obtain a pressure parameter value.
It should be noted that the pressure parameter value may be each pressure value in the pressure waveform diagram, and this embodiment is not limited thereto.
The generating module 30 is further configured to adjust the candidate pulse waveform graph according to the pressure parameter value, so as to obtain a target pulse waveform graph.
It should be understood that the candidate pulse waveform map is adjusted by the preset waveform correction model according to the pressure parameter value to obtain the target pulse waveform map. The preset waveform correction model may be preset by a manufacturer of the smart phone, which is not limited in this embodiment.
Further, in order to improve the reliability and accuracy of the target pulse oscillogram, the generating module 30 is further configured to search a pulse correction value corresponding to the pressure parameter value in a preset mapping table, where the preset mapping table includes a corresponding relationship between the pressure parameter value and the pulse correction value;
the generating module 30 is further configured to correct the candidate pulse waveform graph according to the pulse parameter value, so as to obtain a target pulse waveform graph.
It should be noted that, the correspondence between the pressure parameter value and the pulse correction value may be preset by the manufacturer of the smart phone according to the test result, which is not limited in this embodiment.
It should be understood that, the candidate pulse waveform map is modified according to the pulse parameter value, and the target pulse waveform map is obtained by performing waveform modification on the candidate pulse waveform map according to the pulse parameter value to remove the influence of pressure change on the pulse waveform map.
In a third embodiment, the initial pressure oscillogram and the initial pulse oscillogram are compared and analyzed, a signal synchronization parameter is determined according to a comparison and analysis result, the initial pulse oscillogram is adjusted according to the signal synchronization parameter to obtain a candidate pulse oscillogram, the initial pressure oscillogram is subjected to parameter extraction to obtain a pressure parameter value, and the candidate pulse oscillogram is adjusted according to the pressure parameter value to obtain a target pulse oscillogram, so that the pulse oscillogram can be corrected according to the pressure oscillogram, the influence of pressure change on the pulse oscillogram is avoided, and the accuracy of the pulse oscillogram is improved.
In a third embodiment, the generating module 30 is further configured to perform feature extraction on the target pulse waveform diagram to obtain pulse feature information.
It should be noted that the pulse characteristic information may be information such as a heart rate and a diastolic time ratio, which is not limited in this embodiment.
It should be understood that, the feature extraction is performed on the target pulse waveform diagram, and the obtaining of the pulse feature information may be that the feature extraction is performed on the target pulse waveform diagram through a preset analysis model, so as to obtain the pulse feature information. The preset analysis model may be a waveform analysis model preset by a manufacturer of the smart phone, which is not limited in this embodiment.
The generating module 30 is further configured to search for a current blood pressure value corresponding to the pulse feature information, and generate a blood pressure detection result according to the current blood pressure value.
It can be understood that the step of searching for the current blood pressure value corresponding to the pulse characteristic information may be a step of searching for the current blood pressure value corresponding to the pulse characteristic information in a preset blood pressure table. The preset blood pressure meter comprises a corresponding relation between pulse characteristic information and a current blood pressure value, and the corresponding relation between the pulse characteristic information and the current blood pressure value can be preset by a manufacturer of the smart phone.
It should be understood that generating a blood pressure detection result from the current blood pressure value may be directly taking the current blood pressure value as the blood pressure detection result; or judging whether the current blood pressure value is larger than a preset threshold value, and generating a blood pressure detection result according to the judgment result. For example, when the current blood pressure value is greater than the preset threshold, the blood pressure detection result is that the blood pressure is too high. The preset threshold may be preset by a manufacturer of the smart phone, which is not limited in this embodiment.
In a third embodiment, feature extraction is performed on the target pulse oscillogram to obtain pulse feature information, a current blood pressure value corresponding to the pulse feature information is searched, and a blood pressure detection result is generated according to the current blood pressure value; thereby generating accurate and reliable blood pressure detection results.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system 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 system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order, but rather the words first, second, third, etc. are to be interpreted as names.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention or portions thereof that contribute to the prior art may be embodied in the form of a software product, where the computer software product is stored in a storage medium (e.g., a Read Only Memory (ROM)/Random Access Memory (RAM), a magnetic disk, an optical disk), and includes several instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A blood pressure monitor, comprising: the device comprises an acquisition module, a processing module and a generation module;
the acquisition module is used for determining a to-be-detected area according to a blood pressure detection instruction when the blood pressure detection instruction is received, and acquiring reflected light information and pressure information of the to-be-detected area;
the processing module is used for generating an initial pulse oscillogram according to the reflected light information and generating an initial pressure oscillogram according to the pressure information;
and the generating module is used for generating a blood pressure detection result according to the initial pressure oscillogram and the initial pulse oscillogram.
2. The blood pressure detecting device of claim 1, wherein the generating module is further configured to adjust the initial pulse waveform map according to the initial pressure waveform map to obtain a target pulse waveform map;
the generation module is further used for determining a current blood pressure value according to the target pulse oscillogram and generating a blood pressure detection result according to the current blood pressure value.
3. The blood pressure detecting device of claim 2, wherein the generating module is further configured to compare the initial pressure waveform map with the initial pulse waveform map and determine a signal synchronization parameter according to the comparison result;
the generation module is further configured to adjust the initial pulse oscillogram according to the signal synchronization parameter to obtain a candidate pulse oscillogram;
the generating module is further configured to perform parameter extraction on the initial pressure oscillogram to obtain a pressure parameter value;
the generating module is further configured to adjust the candidate pulse oscillogram according to the pressure parameter value to obtain a target pulse oscillogram.
4. The blood pressure detecting device of claim 3, wherein the generating module is further configured to look up the pulse correction value corresponding to the pressure parameter value in a preset mapping table, and the preset mapping table includes a correspondence between the pressure parameter value and the pulse correction value;
the generation module is further configured to correct the candidate pulse oscillogram according to the pulse parameter value to obtain a target pulse oscillogram.
5. The blood pressure detecting device of claim 2, wherein the generating module is further configured to perform feature extraction on the target pulse waveform map to obtain pulse feature information;
the generation module is further configured to search for a current blood pressure value corresponding to the pulse feature information, and generate a blood pressure detection result according to the current blood pressure value.
6. The blood pressure detection device according to any one of claims 1-5, wherein the obtaining module is further configured to determine the region to be detected according to the blood pressure detection instruction when receiving the blood pressure detection instruction;
the acquisition module is also used for controlling the sensor of the area to be detected to synchronously sample the reflected light information and the pressure information of the area to be detected.
7. The blood pressure detection device of any one of claims 1-5, wherein the processing module is further configured to extract information from the reflected light information, obtain a first analog signal, and generate an initial pulse waveform map according to the first analog signal;
the processing module is further configured to extract information from the pressure information, obtain a second analog signal, and generate an initial pressure oscillogram according to the second analog signal.
8. The blood pressure detecting device of claim 7, wherein the processing module is further configured to extract information from the reflected light information to obtain a first analog signal;
the processing module is further configured to perform analog-to-digital conversion on the first analog signal to obtain a first digital signal;
the processing module is further configured to filter the first data signal through a preset filtering model to obtain a target digital signal, and generate an initial pulse oscillogram according to the target digital signal.
9. The blood pressure monitor of claim 7, wherein said processing module is further configured to extract information from said pressure information to obtain a second analog signal;
the processing module is further configured to perform analog-to-digital conversion on the second analog signal to obtain a second digital signal, and generate an initial pressure oscillogram according to the second digital signal.
10. A blood pressure detection apparatus, characterized by comprising: a memory, a processor and a blood pressure detection program stored on the memory and executable on the processor, the blood pressure detection program when executed by the processor implementing the steps of the method of:
when a blood pressure detection instruction is received, determining a region to be detected according to the blood pressure detection instruction, and acquiring reflected light information and pressure information of the region to be detected;
generating an initial pulse waveform according to the reflected light information, and generating an initial pressure waveform according to the pressure information;
and generating a blood pressure detection result according to the initial pressure oscillogram and the initial pulse oscillogram.
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