CN109416276B - Vibration detection device, method, computer storage medium and pulse diagnosis instrument - Google Patents
Vibration detection device, method, computer storage medium and pulse diagnosis instrument Download PDFInfo
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- CN109416276B CN109416276B CN201780028396.2A CN201780028396A CN109416276B CN 109416276 B CN109416276 B CN 109416276B CN 201780028396 A CN201780028396 A CN 201780028396A CN 109416276 B CN109416276 B CN 109416276B
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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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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- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
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Abstract
A vibration detection apparatus (100) includes a light source assembly (11), a diffractive optical element (12), an image pickup device (13), and an image processing device (14), wherein at least part of the light source component (11) is attached to the object (900) to be measured, the diffractive optical element (12) is used for diffracting the light rays emitted by the light source component (11), thereby forming a diffraction pattern on the photosensitive surface of the image acquisition equipment (13) along with the vibration of the object (900), an image acquisition device (13) for image acquisition of the diffraction pattern, an image processing device (14) having a plurality of reference patterns stored therein, wherein each reference pattern is associated with at least one reference amplitude, the image processing device (14) matches the diffraction pattern acquired by the image acquisition device (13) with a plurality of reference patterns, and the reference amplitude corresponding to the matched reference pattern is used as the actual amplitude of the object (900) to be measured. The vibration detection device (100) can rapidly detect the vibration condition, and the detection precision is high. A vibration detection method, a pulse diagnosis instrument (200) and a computer storage medium are also disclosed.
Description
Technical Field
The invention relates to the field of detection equipment, in particular to a vibration detection device and method, a computer storage medium and a pulse diagnosis instrument.
Background
In both industrial and medical fields, vibration, such as regular vibration of mechanical equipment in the industrial field and vibration of human body pulse in the medical field, is a common means for understanding the pulse condition of mechanical equipment or human body.
However, the current methods for detecting vibration are single-point detection, which only can obtain the amplitude of a single point, and for detecting a single area, only a plurality of times of single-point detection can be adopted, and if too many detection points are used, the calculation cost of vibration detection is affected, and if too few detection points are used, the precision of vibration detection is affected.
Disclosure of Invention
The invention provides a vibration detection device, a vibration detection method, a computer storage medium and a pulse diagnosis instrument, which aim to solve the problems of overhigh calculation cost or low detection precision of vibration detection in the prior art.
In order to solve the technical problem, the invention provides a vibration detection device, which comprises a light source assembly, a diffractive optical element, an image acquisition device and an image processing device, wherein at least part of the light source assembly is attached to an object to be detected, the diffractive optical element is used for diffracting light rays emitted by the light source assembly so as to form a diffraction pattern which changes along with vibration of the object to be detected on a photosensitive surface of the image acquisition device, the image acquisition device is used for acquiring images of the diffraction pattern, the image processing device stores a plurality of reference patterns, each reference pattern is associated with at least one reference amplitude, the image processing device matches the diffraction pattern acquired by the image acquisition device with the plurality of reference patterns, and the reference amplitude corresponding to the matched reference pattern is used as the actual amplitude of the object to be detected.
In order to solve the above technical problem, the present invention further provides a vibration detection method, including: acquiring a diffraction pattern which changes along with the vibration of an object to be detected; matching the acquired diffraction pattern with a plurality of pre-stored reference patterns, wherein each reference pattern is associated with at least one reference amplitude; and taking the reference amplitude corresponding to the matched reference pattern as the actual amplitude of the object to be measured.
To solve the above technical problem, the present invention provides a computer storage medium having an executable program stored therein, the executable program being executable to implement the above method.
In order to solve the technical problem, the invention further provides a pulse diagnosis instrument, which comprises a light source assembly, a diffractive optical element, an image acquisition device and an image processing device, wherein at least part of the light source assembly is attached to the pulse position of the human body, the diffractive optical element is used for diffracting light rays emitted by the light source assembly, so that diffraction patterns changing along with vibration of the pulse position of the human body are formed on a photosensitive surface of the image acquisition device, the image acquisition device is used for acquiring images of the diffraction patterns, the image processing device stores a plurality of reference patterns, each reference pattern is associated with at least one reference amplitude, the image processing device matches the diffraction patterns acquired by the image acquisition device with the plurality of reference patterns, and the reference amplitude corresponding to the matched reference patterns is used as the actual amplitude of the pulse position of the human body.
The vibration detection device comprises a light source component, a diffractive optical element, image acquisition equipment and image processing equipment, wherein at least part of the light source component is attached to an object to be detected, the diffractive optical element is used for diffracting light rays emitted by the light source component so as to form diffraction patterns changing along with vibration of the object to be detected on a photosensitive surface of the image acquisition equipment, the image acquisition equipment is used for acquiring images of the diffraction patterns, a plurality of reference patterns are stored in the image processing equipment, each reference pattern is associated with at least one reference amplitude, the image processing equipment is used for matching the diffraction patterns acquired by the image acquisition equipment with the reference patterns, and the reference amplitude corresponding to the matched reference patterns is used as the actual amplitude of the object to be detected. The invention utilizes the principle of optical diffraction to convert different amplitudes into different diffraction patterns, and the diffraction patterns are analyzed to obtain the actual amplitude, so that the calculation cost is low, and the vibration condition can be quickly detected; and the diffraction pattern can reflect the amplitude condition of the whole area of the object to be detected, so that the vibration detection precision of the invention is higher.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of a vibration detecting apparatus according to the present invention;
FIG. 2 is a schematic view of the vibration detecting apparatus shown in FIG. 1, wherein the light source assembly corresponds to the entire surface of the object to be detected;
FIG. 3 is a schematic view of the vibration detecting apparatus shown in FIG. 1, wherein the light source assembly corresponds to different positions of the object to be detected;
FIG. 4 is a schematic diagram of a first light source assembly in an embodiment of the vibration detecting apparatus shown in FIG. 1;
FIG. 5 is a schematic diagram of a second light source assembly in the embodiment of the vibration detecting device shown in FIG. 1;
FIG. 6 is a schematic diagram of a third light source assembly in the embodiment of the vibration detecting device shown in FIG. 1;
FIG. 7 is a schematic flow chart diagram of one embodiment of a vibration detection method of the present invention;
fig. 8 is a schematic structural diagram of an embodiment of the pulse diagnosis instrument of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments and the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a vibration detection apparatus 100 according to an embodiment of the present invention, which includes a light source assembly 11, a diffractive optical element 12, an image capturing device 13, and an image processing device 14.
When the vibration detection device 100 is used for detecting an object to be detected, at least part of the light source assembly 11 is attached to the object to be detected, the diffractive optical element 12 diffracts light emitted by the light source assembly 11, a diffraction pattern which changes along with vibration of the object to be detected is formed on a photosensitive surface of the image acquisition equipment 13, and the image acquisition equipment 13 acquires images of the diffraction pattern. When the object to be measured vibrates, the light source assembly 11 attached to the object to be measured also vibrates, and the diffractive optical element 12 diffracts the light emitted by the light source assembly 11, so that a diffraction pattern corresponding to the vibration can be formed. The image pickup device 13 senses the diffracted light through the photosensitive surface, thereby obtaining a diffraction pattern.
After obtaining the diffraction pattern, the vibration detection apparatus 100 can obtain the amplitude according to the diffraction pattern, specifically, the image processing device 14 in the vibration detection apparatus 100 stores a plurality of reference patterns, each of which has at least one reference amplitude associated therewith, the image processing device 14 matches the diffraction pattern collected by the image collection device 13 with the plurality of reference patterns, and uses the reference amplitude corresponding to the matched reference pattern as the actual amplitude of the object to be measured.
The light source assembly 11 and the diffractive optical element 12 may correspond to the entire surface of the object to be measured, as shown in fig. 2, fig. 2 is a schematic diagram of the light source assembly in the vibration detecting apparatus shown in fig. 1 corresponding to the entire surface of the object to be measured; the light source assembly 11 is partially or completely attached to the entire surface of the object 900 to be measured to form a diffraction pattern, and the image processing apparatus 14 matches the diffraction pattern with the reference pattern, so as to obtain the actual amplitude of the object 900 to be measured through the diffraction pattern.
The light source module 11 and the diffractive optical element 12 may also correspond to different positions of the object to be measured, as shown in fig. 3, fig. 3 is a schematic diagram of the light source module in the vibration detection apparatus shown in fig. 1 corresponding to different positions of the object to be measured; the light source assembly 11 includes a plurality of sub light source assemblies, which are respectively attached to different positions of the object 900 to be measured, so that a plurality of diffraction patterns at a plurality of positions can be obtained, that is, the light source assembly 11 and the diffractive optical element 12 are set to generate a plurality of diffraction patterns corresponding to different positions of the object to be measured in the situation shown in fig. 3. After obtaining the plurality of diffraction patterns, the image processing device 14 matches the plurality of diffraction patterns with the plurality of reference patterns, so as to obtain actual amplitudes of the object to be measured at different positions.
It should be noted that fig. 2 and 3 are only used to illustrate the corresponding relationship between the light source assembly 11 and the whole surface or different positions of the object 900 to be measured, and the specific structure of the light source assembly 11 is not limited, and the structure of the light source assembly 11 will be described in detail later. In addition, for ease of reference in FIG. 3, reference numeral 11 only points to 2 sub-light source assemblies; the light source assembly 11 is essentially constituted by 12 sub-light source assemblies together as illustrated in fig. 3.
Comparing the two manners in fig. 2 and fig. 3, a plurality of diffraction patterns can be obtained in fig. 3, so as to obtain the actual amplitudes of different positions of the object to be measured, which is more accurate than the manner of obtaining the actual amplitudes according to one diffraction pattern in fig. 2, but the corresponding calculation amount is larger, and the calculation cost is higher.
For the reference pattern, the reference pattern may be associated with only the reference amplitude, and may further be associated with different positions, i.e., a plurality of reference patterns corresponding to different positions.
When the image processing apparatus 14 matches the diffraction pattern with the reference pattern, for a case where the light source assembly 11 and the diffractive optical element 12 correspond to the entire surface of the object to be measured, the actual amplitude is obtained from the obtained one diffraction pattern, the reference pattern may be associated with only the reference amplitude, and the image processing apparatus 14 matches the one diffraction pattern with the reference pattern, thereby obtaining the actual amplitude.
In the case where the light source module 11 and the diffractive optical element 12 correspond to different positions of the object to be measured, a plurality of diffraction patterns corresponding to the different positions are obtained, the reference patterns may be only associated with the reference amplitudes, and the image processing apparatus 14 matches the plurality of diffraction patterns with the plurality of reference patterns, respectively, so as to obtain actual amplitudes of the different positions. The reference pattern may also relate the reference amplitude to different positions, that is, for a plurality of reference patterns corresponding to different positions, the image processing apparatus 14 may match the plurality of diffraction patterns with a plurality of reference patterns corresponding to the diffraction patterns, respectively, that is, for a diffraction pattern at a certain position, the diffraction pattern is matched with a plurality of reference patterns at the certain position, so as to obtain the actual amplitude at the certain position.
Referring to fig. 4-6, fig. 4 is a schematic structural diagram of a first light source assembly in an embodiment of the vibration detection apparatus shown in fig. 1, fig. 5 is a schematic structural diagram of a second light source assembly in an embodiment of the vibration detection apparatus shown in fig. 1, and fig. 6 is a schematic structural diagram of a third light source assembly in an embodiment of the vibration detection apparatus shown in fig. 1.
In fig. 4, the light source assembly 11 includes a detection substrate 111 and at least one light source 112, wherein the detection substrate 111 is disposed to be attached to the object 900 to be measured, the light source 112 is disposed on the detection substrate 111, so that the transmission distance from the light output by the light source 112 to the diffractive optical element 12 is changed along with the vibration of the object 900 to be measured, and the diffractive optical element 12 can form a diffraction pattern corresponding to the vibration. In the light source assembly 11, the detection substrate 111 is attached to the object 900 to be detected, so when the object 900 to be detected vibrates, the detection substrate 111 vibrates, and the light source 112 is disposed on the detection substrate 111, so that the position of the light source 112 changes, and the transmission distance from the light output by the light source 112 to the diffractive optical element 12 changes. The light source 112 may be a point light source, and the light source assembly 11 includes a plurality of light sources 112 uniformly distributed on the detection substrate 111; the light source 112 may also be a planar light source in the form of a sheet attached to the detection substrate 111.
In fig. 5, the light source assembly 11 ' includes a detection substrate 11 ' 1 and at least one light source 11 ' 2, wherein the detection substrate 11 ' 1 is disposed to be attached to an object 900 to be measured, and a diffusion surface 11 ' 3 is disposed on a side of the detection substrate 11 ' 1 facing the diffractive optical element 12, light output from the light source 11 ' 2 is reflected to the diffractive optical element 12 through the diffusion surface 11 ' 3, so that a transmission distance from the light reflected by the diffusion surface 11 ' 3 to the diffractive optical element 12 is changed along with vibration of the object to be measured, and the diffractive optical element 12 is capable of forming a diffraction pattern corresponding to the vibration. In the light source module 11 ' of fig. 3, the detection substrate 11 ' 1 and the diffusion surface 11 ' 3 both vibrate along with the vibration of the object 900 to be measured, the position of the light source 11 ' 2 is fixed, the light output by the light source 11 ' 2 is reflected by the diffusion surface 11 ' 3, and the diffusion surface 11 ' 3 vibrates along with the vibration of the object 900 to be measured, so the transmission distance from the light reflected by the diffusion surface to the diffractive optical element 12 also changes, and the diffractive optical element 12 can form a diffraction pattern corresponding to the vibration.
The light source module 11 in fig. 6 includes at least one light source 112, the light source 112 is similar to the light source 112 shown in fig. 4, but the light source module 11 shown in fig. 6 does not include a detection substrate, the light source 112 is directly disposed on the object 900 to be detected, and the light source 112 may be a point light source or a sheet-shaped surface light source; fig. 6 shows a sheet-like surface light source as an example, and fig. 4 can be referred to obtain the arrangement manner of the point light source.
Since the vibration of the object to be measured may be constantly changing, the image processing device 14 in the present embodiment matches the plurality of diffraction patterns continuously acquired over time by the image acquisition device 13 with the plurality of reference patterns, respectively, to obtain a plurality of actual amplitudes from which an amplitude waveform diagram that changes over time can be generated.
As for the reference pattern stored in the image processing apparatus 14, after determining the arrangement manner of the vibration detection device 100, that is, after determining the optical characteristics of the light source assembly 11, the optical characteristics of the diffractive optical element 12, and the positional relationship among the light source assembly 11, the image pickup apparatus 13, and the image processing apparatus 14 in the present embodiment; the correspondence relationship between the reference pattern and the reference amplitude is established based on the vibration detection device 100 that has been set. Specifically, the light source module 11 is attached to the object to be measured, in whole or in part, and a reference amplitude is given, and then the reference pattern formed by the optical diffraction element 12 on the photosensitive surface of the image pickup device 13 is associated with the given reference amplitude and stored. For the generation of the reference pattern, it may happen that a plurality of different reference amplitudes are associated with the same reference pattern, i.e. one reference pattern may correspond to a plurality of reference amplitudes.
In the above case, when we match the diffraction patterns, multiple reference amplitudes may be obtained, and in this case, one of the multiple reference amplitudes needs to be selected as the current actual amplitude. Since the change in amplitude is continuous, the change between amplitudes derived from adjacent frame diffraction patterns is not too large, so the actual amplitudes of adjacent frame diffraction patterns can be referenced to exclude the singular solution of the actual amplitude of the current frame. That is, a plurality of current reference amplitudes may be selected based on the actual amplitudes of the diffraction patterns at the current time, and a reference amplitude that is more continuous with the actual amplitudes of the diffraction patterns at the neighboring time may be selected as the actual amplitude of the diffraction pattern at the current time. The image processing apparatus 14 of the present embodiment further selects one of the obtained reference amplitudes as the actual amplitude of the current frame, using the actual amplitude obtained by matching the diffraction patterns of the adjacent frames as a constraint condition.
In addition, when matching the diffraction pattern with the reference pattern, the matching is generally performed after extracting the features, and when there are a plurality of reference patterns having the extracted features, the diffraction pattern may be matched with the plurality of reference patterns, and at this time, a plurality of reference amplitudes may also be obtained, and similarly, it is necessary to select one of the plurality of reference amplitudes as the current actual amplitude. The image processing apparatus 14 of the present embodiment selects one of the obtained plurality of reference amplitudes as the actual amplitude of the diffraction pattern of the current frame, based on the fact that the change in amplitude has continuity, that is, in the case where a plurality of reference amplitudes are obtained, using the actual amplitudes obtained by matching the diffraction patterns of the adjacent frames as the constraint conditions.
In the vibration detection apparatus 100 of the present embodiment, at least two reference amplitudes may be obtained when matching the diffraction pattern of the current frame, and for the case of obtaining a plurality of reference amplitudes, in the present embodiment, the image processing device 14 further uses an actual amplitude obtained by matching the diffraction patterns of adjacent frames as a constraint condition, and selects one of the obtained at least two reference amplitudes as an actual amplitude of the current object to be measured.
The vibration detection device firstly gives a reference amplitude by using the principle of optical diffraction, obtains a corresponding reference pattern through the vibration detection device, and then stores the reference pattern and the corresponding reference pattern in a correlation manner; the detected diffraction pattern is matched with the reference pattern during actual vibration detection, so that the actual amplitude is obtained, the calculation cost is low, and the vibration condition can be quickly detected; and the diffraction pattern can reflect the amplitude condition of the whole area of the object to be detected, so that the vibration detection precision of the invention is higher.
Based on the principle of optical diffraction, the present invention further provides a vibration detection method, and specifically refer to fig. 7, where fig. 7 is a schematic flow chart of an embodiment of the vibration detection method according to the present invention. The vibration detection method of the present embodiment includes the steps of:
s11: and acquiring a diffraction pattern which changes along with the vibration of the object to be detected.
The diffraction pattern obtained in step S11 can indicate the vibration of the object to be detected, and the surface change of the object to be detected when the object to be detected vibrates is detected according to the optical principle, the specific process can be referred to the vibration detection apparatus in the above embodiment, and a plurality of diffraction patterns corresponding to different positions of the object to be detected can also be obtained in step S11.
S12: and matching the acquired diffraction pattern with a plurality of reference patterns stored in advance.
If a plurality of diffraction patterns are formed in step S11, the plurality of diffraction patterns are respectively matched with the plurality of reference patterns in step S12, so as to obtain actual amplitudes of different positions of the object to be measured.
In step S12, reference patterns are pre-stored, and each reference pattern is associated with at least one reference amplitude. That is, the vibration detection method according to the present embodiment further includes a step of associating and storing a reference pattern with a predetermined reference amplitude before step S11, and more specifically, after the setting mode of the vibration detection device is determined, that is, after the optical characteristics of the light source unit, the optical characteristics of the diffractive optical element, and the positional relationship among the light source unit, the image pickup device, and the image processing device are determined; and establishing the corresponding relation between the reference pattern and the reference amplitude based on the set vibration detection device. The light source assembly is wholly or partially attached to an object to be measured, a reference amplitude is given, and then a reference pattern formed by the optical diffraction element on a photosensitive surface of the image acquisition equipment is associated with the given reference amplitude and then stored.
In step S12, when at least two actual amplitudes are obtained by matching the diffraction pattern of the current frame, the actual amplitudes obtained by matching the diffraction patterns of the adjacent frames are further used as constraint conditions, and one of the obtained at least two reference amplitudes is selected as the actual amplitude of the current frame.
S13: and taking the reference amplitude corresponding to the matched reference pattern as the actual amplitude of the object to be measured.
In the case where a plurality of diffraction patterns are formed, the actual amplitudes of different positions of the object to be measured are obtained from the matched reference patterns in step S13.
S14: an amplitude waveform map that varies with time is generated from a plurality of actual amplitudes that are obtained continuously with time.
The vibration detection method is similar to the vibration detection device and is also based on the principle of optical diffraction, different amplitudes are theoretically calculated to obtain corresponding reference patterns to be stored, and the detected diffraction patterns are matched with the reference patterns during actual vibration detection, so that the actual amplitudes are obtained, the calculation cost is low, and the vibration condition can be quickly detected; and the diffraction pattern can reflect the amplitude condition of the whole area of the object to be detected, so that the vibration detection precision of the invention is higher.
In the application of human pulse detection, the vibration detection apparatus is used as a pulse diagnosis instrument, and the pulse diagnosis instrument 200 includes a light source assembly 21, a diffractive optical element 22, an image acquisition device 23, and an image processing device 24.
When the pulse diagnosis instrument 200 works, at least part of the light source component 21 is attached to the pulse of the human body, the diffractive optical element 22 diffracts light emitted by the light source component, so that a diffraction pattern which changes along with the vibration of the pulse of the human body is formed on a photosensitive surface of the image acquisition device 23, the image acquisition device 23 acquires images of the formed diffraction pattern, a plurality of reference patterns are stored in the image processing device 24, each reference pattern is associated with at least one reference amplitude, the image processing device 24 matches the diffraction pattern acquired by the image acquisition device 23 with the plurality of reference patterns, and the reference amplitude corresponding to the matched reference pattern is used as the actual amplitude of the pulse of the human body.
The pulse diagnosis instrument 200 detects the vibration of the pulse of the human body, and the light source assembly 21, the diffractive optical element 22, the image acquisition device 23 and the image processing device 24 have similar functions and working processes to those of the similar components of the vibration detection device 100, and are not described in detail again. The pulse diagnosis instrument can quickly and accurately detect the pulse vibration of the human body.
The above description is only an 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 performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (21)
1. A vibration detecting apparatus comprising a light source assembly, a diffractive optical element, an image pickup device, and an image processing device, wherein at least part of the light source component is attached to an object to be detected, the diffractive optical element is used for diffracting the light emitted by the light source component, so as to form a diffraction pattern on the photosensitive surface of the image acquisition equipment, wherein the diffraction pattern changes along with the vibration of the object to be detected, the image acquisition device is used for acquiring images of the diffraction patterns, a plurality of reference patterns are stored in the image processing device, wherein each of the reference patterns has associated therewith at least one reference amplitude, the image processing device matching the diffraction pattern acquired by the image acquisition device with the plurality of reference patterns, and taking the reference amplitude corresponding to the matched reference pattern as the actual amplitude of the object to be detected.
2. The vibration detection apparatus according to claim 1, wherein the light source module and the diffractive optical element are configured to generate a plurality of diffraction patterns corresponding to different positions of the object to be measured, and the image processing device matches the plurality of diffraction patterns with the plurality of reference patterns, respectively, to obtain actual amplitudes of the different positions of the object to be measured.
3. The vibration detection apparatus according to claim 2, wherein the image processing device stores therein the plurality of reference patterns corresponding to different positions of the object to be detected, and the image processing device matches the plurality of diffraction patterns with the plurality of reference patterns having the same positions of the object to be detected as the diffraction patterns, respectively, to obtain actual amplitudes of the object to be detected at the different positions.
4. The vibration detecting apparatus according to claim 1, wherein the light source assembly includes a detecting substrate and at least one light source, the detecting substrate is configured to be attached to the object to be detected, and the light source is configured on the detecting substrate, so that a transmission distance from the light output by the light source to the diffractive optical element varies with the vibration of the object to be detected.
5. The vibration detecting apparatus according to claim 1, wherein the light source assembly includes a detecting substrate and at least one light source, the detecting substrate is disposed to be attached to the object to be detected, and a diffusing surface is disposed on a side of the detecting substrate facing the diffractive optical element, and light output from the light source is reflected to the diffractive optical element through the diffusing surface, so that a transmission distance from the light reflected by the diffusing surface to the diffractive optical element varies with vibration of the object to be detected.
6. The vibration detecting apparatus according to claim 1, wherein the light source assembly includes at least one light source attached to the object to be detected, so that a transmission distance from the light output from the light source to the diffractive optical element varies with the vibration of the object to be detected.
7. The vibration detection apparatus according to claim 1, wherein the image processing device matches a plurality of the diffraction patterns successively acquired over time by the image acquisition device with the plurality of reference patterns, respectively, and generates an amplitude waveform pattern varying over time from a plurality of the actual amplitudes obtained.
8. The vibration detection apparatus according to claim 1, wherein when the image processing device matches the diffraction pattern of a current frame to obtain at least two reference amplitudes, the image processing device further uses the actual amplitudes obtained by matching the diffraction patterns of adjacent frames as constraint conditions, and selects one of the obtained at least two reference amplitudes as a current actual amplitude of the object to be measured.
9. A vibration detection method, characterized in that the method comprises:
acquiring a diffraction pattern which changes along with the vibration of an object to be detected;
matching the acquired diffraction pattern with a plurality of pre-stored reference patterns, wherein each reference pattern is associated with at least one reference amplitude;
and taking the reference amplitude corresponding to the matched reference pattern as the actual amplitude of the object to be detected.
10. The method of claim 9, wherein the acquiring the diffraction pattern that varies with the vibration of the object to be measured comprises:
acquiring a plurality of diffraction patterns corresponding to different positions of the object to be detected;
the matching the acquired diffraction pattern with a plurality of reference patterns stored in advance includes:
and matching the plurality of diffraction patterns with the plurality of reference patterns respectively to further obtain the actual amplitudes of different positions of the object to be measured.
11. The method according to claim 10, wherein the pre-stored plurality of reference patterns comprises a plurality of reference patterns corresponding to different positions of the object to be measured;
the matching the plurality of diffraction patterns with the plurality of reference patterns, respectively, comprises:
and respectively matching the plurality of diffraction patterns with the plurality of reference patterns with the same positions of the objects to be detected corresponding to the diffraction patterns.
12. The method of claim 9, further comprising:
and generating an amplitude waveform diagram varying with time according to a plurality of actual amplitudes continuously obtained with time.
13. The method of claim 9, wherein the step of using the reference amplitude corresponding to the matched reference pattern as the actual amplitude of the object to be measured further comprises:
when the diffraction patterns of the current frame are matched to obtain at least two reference amplitudes, the actual amplitudes obtained by matching the diffraction patterns of the adjacent frames are further used as constraint conditions, and one of the obtained at least two reference amplitudes is selected as the actual amplitude of the current frame.
14. A computer storage medium having stored thereon an executable program executable to implement the method of any one of claims 9-13.
15. The pulse diagnosis instrument is characterized by comprising a light source component, a diffraction optical element, an image acquisition device and an image processing device, wherein at least part of the light source component is attached to the pulse position of a human body, the diffractive optical element is used for diffracting the light rays emitted by the light source component, further forming a diffraction pattern which changes along with the vibration of the human body pulse on the photosensitive surface of the image acquisition equipment, the image acquisition device is used for acquiring images of the diffraction patterns, a plurality of reference patterns are stored in the image processing device, wherein each of the reference patterns has associated therewith at least one reference amplitude, the image processing device matching the diffraction pattern acquired by the image acquisition device with the plurality of reference patterns, and taking the reference amplitude corresponding to the matched reference pattern as the actual amplitude of the human body pulse.
16. The pulse diagnosis instrument according to claim 15, wherein the light source module and the diffractive optical element are arranged to generate a plurality of diffraction patterns corresponding to different positions of the pulse of the human body, and the image processing device matches the plurality of diffraction patterns with the plurality of reference patterns, respectively, so as to obtain the actual amplitudes of the different positions of the pulse of the human body.
17. The pulse diagnosis instrument according to claim 15, wherein the light source assembly comprises a detection substrate and at least one light source, wherein the detection substrate is configured to be attached to the pulse of the human body, and the light source is configured on the detection substrate, so that the transmission distance of the light output by the light source to the diffractive optical element varies with the vibration of the pulse of the human body.
18. The pulse diagnosis instrument according to claim 15, wherein the light source assembly comprises a detection substrate and at least one light source, wherein the detection substrate is disposed to be attached to the pulse region of the human body, and a diffusion surface is disposed on a side of the detection substrate facing the diffractive optical element, and light output from the light source is reflected to the diffractive optical element via the diffusion surface, so that a transmission distance from the light reflected by the diffusion surface to the diffractive optical element varies with the vibration of the pulse region of the human body.
19. The pulse diagnosis instrument according to claim 15, wherein the light source assembly comprises at least one light source attached to the pulse of the human body, such that the transmission distance of the light output from the light source to the diffractive optical element varies with the vibration of the pulse of the human body.
20. The pulse diagnosis instrument according to claim 15, wherein the image processing device matches a plurality of the diffraction patterns successively acquired over time by the image acquisition device with the plurality of reference patterns, respectively, and generates an amplitude waveform pattern varying over time from a plurality of the actual amplitudes obtained.
21. The pulse diagnosis instrument according to claim 15, wherein when the image processing device matches the diffraction pattern of the current frame to obtain at least two reference amplitudes, the image processing device further uses the actual amplitudes obtained by matching the diffraction patterns of the adjacent frames as a constraint condition, and selects one of the obtained at least two reference amplitudes as the current actual amplitude at the human pulse.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2017/102272 WO2019056179A1 (en) | 2017-09-19 | 2017-09-19 | Vibration detecting apparatus and method, computer storage medium, and pulse diagnosis device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109416276A CN109416276A (en) | 2019-03-01 |
| CN109416276B true CN109416276B (en) | 2019-12-24 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101773383A (en) * | 2010-03-09 | 2010-07-14 | 哈尔滨工业大学 | Device and method for detecting position of radial artery |
| CN102274015A (en) * | 2011-05-06 | 2011-12-14 | 天津大学 | Method and device for wrist strap type pulse signal extraction based on optical fiber vibration period analysis |
| CN104101420A (en) * | 2013-04-01 | 2014-10-15 | 北京师范大学 | Vibration sample internal reflection point small amplitude measurement method |
| WO2016103271A2 (en) * | 2014-12-27 | 2016-06-30 | Guardian Optical Technologies Ltd. | System and method for detecting surface vibrations |
| CN106840226A (en) * | 2017-03-29 | 2017-06-13 | 南京大学 | Flexible wearable health sensor and its preparation and measurement method based on micro optical fiber structure |
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- 2017-09-19 WO PCT/CN2017/102272 patent/WO2019056179A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101773383A (en) * | 2010-03-09 | 2010-07-14 | 哈尔滨工业大学 | Device and method for detecting position of radial artery |
| CN102274015A (en) * | 2011-05-06 | 2011-12-14 | 天津大学 | Method and device for wrist strap type pulse signal extraction based on optical fiber vibration period analysis |
| CN104101420A (en) * | 2013-04-01 | 2014-10-15 | 北京师范大学 | Vibration sample internal reflection point small amplitude measurement method |
| WO2016103271A2 (en) * | 2014-12-27 | 2016-06-30 | Guardian Optical Technologies Ltd. | System and method for detecting surface vibrations |
| CN106840226A (en) * | 2017-03-29 | 2017-06-13 | 南京大学 | Flexible wearable health sensor and its preparation and measurement method based on micro optical fiber structure |
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| CN109416276A (en) | 2019-03-01 |
| WO2019056179A1 (en) | 2019-03-28 |
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