CN209951236U

CN209951236U - Optical image pulse measuring system

Info

Publication number: CN209951236U
Application number: CN201822124694.6U
Authority: CN
Inventors: 黃澄儀; 谢易振; 柯昱成; 蔡钧涵
Original assignee: Largan Precision Co Ltd
Current assignee: Largan Precision Co Ltd
Priority date: 2018-09-05
Filing date: 2018-12-18
Publication date: 2020-01-17
Anticipated expiration: 2028-12-18

Abstract

The utility model provides an optical image pulse manifestation system of measurationing contains a base, an dustcoat, an optical imaging system, light source module, a circuit module, an operation module and a display module. The base comprises a measuring and positioning auxiliary device. The outer cover is arranged on the base. The optical imaging system is arranged in the outer cover and used for capturing an image of a direction angle of a region to be detected. The light source module is arranged at the periphery of the optical imaging system. The circuit module is electrically connected with the optical imaging system and the light source module. The operation module is in signal connection with the circuit module. The display module is in signal connection with the operation module. Therefore, the utility model discloses an usable optical imaging system of optical image pulse manifestation measurement system picks up the image of testee's wrist department to with pulse manifestation information visualization, in order to obtain the pulse manifestation measuring result of high degree of accuracy.

Description

Optical image pulse measuring system

Technical Field

The present invention relates to a pulse measuring system, and more particularly to an optical image pulse measuring system for measuring and analyzing pulse by an optical imaging system.

Background

Pulse taking in traditional Chinese medicine is an important part of traditional Chinese medicine diagnosis, and not only does pulse reflect the heartbeat frequency of a patient, but also conditions such as autonomic nerves, endocrine conditions, visceral functions and the like directly influence the degree of tension of vessels and the degree of fullness of blood in the vessels. When taking pulse traditionally, TCM doctors press the wrist artery of a patient's wrist through touch, pressure and other actions, and analyze the pulse theory of the three pressing depths of cun, guan and chi of the patient's wrist to know the pulse condition of the patient, and then determine the health status of the patient. However, the accuracy of pulse diagnosis varies with the touch and experience of different physicians, and the physician cannot describe the pulse condition objectively, so that different physicians can give different diagnosis results to the same patient according to their different pulse taking methods.

Nowadays, due to the development of image technology, related manufacturers have developed an objective diagnosis method for capturing the blood vessel pulsation image of the wrist of a patient by using a high-resolution imaging system, and digitizing the blood vessel pulsation image by using an image recognition algorithm to provide an objective diagnosis method for pulse condition diagnosis. Since the color of human skin is mainly caused by the absorption and reflection of light by moisture, Hemoglobin (Hemoglobin), melanin, etc. in the tissue, and Hemoglobin has a high absorption capability for light, when light enters subcutaneous tissue, the periodic variation of blood volume in the same blood vessel segment will further affect the intensity of light reflection, so that the variation of optical properties such as color, etc. presented at the wrist of a patient captured by an imaging device can observe the variation of optical signals reflected by human microvasculature. For example, Photoplethysmography (PPG) can measure the blood volume change in tissue peripheral microvasculature by acquiring the fine color change of human skin, and analyze the position change of the red image component reflected by hemoglobin during blood flow as the first Independent component by an Independent Component Analysis (ICA), thereby diagnosing the pulse condition change of the patient at the three positions of the wrist, cun, guan, and chi. In short, the independent component analysis method is to take continuous images of the wrist of the patient in a short time by a high-resolution camera, then to bring the information of red (R) band, green (G) band and blue (B) band in each image into a data conversion formula, so as to convert the original RGB three color data values into three independent components, and to observe the distribution and change status of hemoglobin by the converted first independent component, and further to analyze the intensity change of the first independent component in the images taken at different time points at the same detection position, thereby obtaining the pulse condition information of the patient in a short time.

However, the photo-plethysmograph signal sensing method is very susceptible to external noise interference during detection to affect the data and waveform presented by the photo-plethysmogram, resulting in distortion of the measurement result, and in the independent component analysis method, the original RGB data cannot effectively present the original blood flow image characteristics of the skin tissue at the wrist of the patient due to the signal overlapping of the blue-green band space and the signal overlapping of the green-red band space, and thus cannot provide a more accurate converted independent component image, further affecting the subsequent measurement result.

Accordingly, there is a need for a pulse measurement system that provides better converted image quality and is easy to operate.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to provide an optical image pulse measurement system, which utilizes an optical imaging system to capture an image of a wrist of a subject, and applies a principal component analysis method or an independent component analysis method to pulse diagnosis, so as to visualize pulse information and standardize data such as pulse measurement techniques and results thereof.

An embodiment of the present invention provides an optical image pulse measuring system, which comprises a base, an outer cover, an optical imaging system, a light source module, a circuit module, an operation module and a display module. The base comprises a measuring and positioning auxiliary device. The outer cover is arranged on the base and used for providing a shading range. The optical imaging system is arranged in the outer cover and used for capturing an image of a direction angle of a region to be detected. The light source module is arranged at the periphery of the optical imaging system and comprises a light source and a light source polaroid. The circuit module is electrically connected with the optical imaging system and the light source module and comprises a power supply control circuit, a data transmission circuit and a synchronous signal control circuit. The operation module is in signal connection with the circuit module. The display module is in signal connection with the operation module.

In the optical image pulse measuring system according to the foregoing embodiment, the optical imaging system may include a band-stop filter set, an imaging polarizer and an imaging module.

In the optical image pulse measuring system according to the foregoing embodiment, the band rejection filter set may include three or less single band rejection filters.

In the optical image pulse measuring system according to the foregoing embodiment, the rejection filter set may include a notch filter.

In the optical image pulse measuring system according to the foregoing embodiment, the full-width half-peak value of the rejection filter set may be less than 40 nm.

In the optical image pulse measuring system according to the foregoing embodiment, the band-rejection filter set may include a first band-rejection filter and a second band-rejection filter.

In the optical image pulse measuring system according to the foregoing embodiment, the first band-rejection filter may be a blue-green band filter and has a band-rejection band upper limit wavelength WL1, and the second band-rejection filter may be a green-red band filter and has a band-rejection band lower limit wavelength WL2, which satisfies the following conditions: 70nm < WL2-WL1<100 nm.

In the optical image pulse measuring system according to the foregoing embodiment, the light source module may be disposed on at least one side of the optical imaging system or disposed around the optical imaging system.

In the optical image pulse measuring system according to the foregoing embodiment, the light source polarizer may be located between the light source and the region to be measured.

In the optical image pulse measuring system according to the foregoing embodiment, the imaging polarizer and the light source polarizer may be linear polarizers.

In the optical image pulse measuring system according to the foregoing embodiment, the light source polarizer and the imaging polarizer may be orthogonally disposed.

In the optical image pulse measuring system according to the foregoing embodiment, the imaging module may include an imaging lens and an image sensor.

In the optical image pulse measuring system according to the foregoing embodiments, the peak quantum efficiency of the red band of the image sensor may be smaller than the peak quantum efficiency of the green band or the blue band.

In the optical image pulse measuring system according to the foregoing embodiment, the rejection filter set may be located between the imaging polarizer and the image sensor.

In the optical image pulse measuring system according to the foregoing embodiment, the imaging polarizer may be located between the band-reject filter set and the image sensor.

In the optical image pulse measuring system according to the foregoing embodiment, the region to be measured may be located in the light-shielding range of the housing.

In the optical image pulse measuring system according to the foregoing embodiment, the data transmission circuit may include a wireless communication transmission module or a wired communication transmission module.

In the optical image pulse measuring system according to the foregoing embodiment, the operation module may include a data operation unit and an analysis database.

In the optical image pulse measuring system according to the foregoing embodiments, the data operation unit may include a computer processor or a mobile device operation unit.

In the optical image pulse measuring system according to the foregoing embodiment, a distance between the optical imaging system and the region to be measured may be 0mm to 300 mm.

In the optical image pulse measuring system according to the foregoing embodiment, the distance between the optical imaging system and the region to be measured may be 0mm to 10 mm.

Drawings

In order to make the aforementioned and other objects, features, advantages and embodiments of the invention more comprehensible, the following description is given:

FIG. 1 is a schematic diagram illustrating an optical image pulse measurement system according to an embodiment of the present invention;

FIG. 2A is a block diagram of an optical imaging system according to the embodiment of FIG. 1; and

FIG. 2B is a schematic diagram of another embodiment of the optical imaging system of the embodiment of FIG. 1;

fig. 3 is a schematic diagram illustrating an optical image pulse measuring system according to an embodiment of the present invention;

FIG. 4 is a partial cross-sectional view of the optical image pulse measuring system of FIG. 3;

FIG. 5A is a response diagram of an image sensor of a conventional optical image pulse measurement system without a rejection filter set;

FIG. 5B is a graph showing transmittance data of a first band-stop filter of the optical image pulse measuring system of the embodiment of FIG. 3;

FIG. 5C is a graph showing transmittance data of a second band-stop filter of the optical image pulse measuring system of the embodiment of FIG. 3;

FIG. 5D is a diagram illustrating the response of the image sensor of the optical image pulse measuring system of the embodiment of FIG. 3; and

FIG. 6 is a schematic diagram illustrating a usage status of the optical image pulse measuring system of FIG. 3 according to an embodiment.

[ notation ] to show

100: optical image pulse measuring system

110: base seat

120: outer cover

200: optical imaging system

202: imaging module

2022: imaging lens

2024: image sensor

204: imaging polarizer

206: band rejection filter set

2062: a first band-rejection filter

2064: second band-reject filter

300: light source module

400: circuit module

402: power supply control circuit

404: data transmission circuit

406: synchronous signal control circuit

500: operation module

600: display module

10: hand part

11: wrist

A: region under test

W1: blue wave band

W2: green wave band

W3: red wave band

O1, O2: overlapping signals

Q1: blue-green band intersection point

Q2: green-red band intersection

Detailed Description

Various embodiments of the present invention will be described below with reference to the accompanying drawings. For the purpose of clarity, numerous implementation details are set forth in the following description. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, details of these implementations are not necessary. In addition, for the sake of simplicity, some conventional structures and elements are shown in the drawings in a simple schematic manner; and repeated elements will likely be referred to using the same reference numerals.

Please refer to fig. 1, which is a schematic diagram illustrating an optical image pulse measuring system according to an embodiment of the present invention. The present invention is directed to an optical image pulse measuring system for detecting the pulse condition of a region a to be measured of a subject (not shown), which comprises a base (not shown), a housing (not shown), an optical imaging system 200, a light source module 300, a circuit module 400, an operation module 500 and a display module 600.

Although not shown, the base includes an auxiliary measuring and positioning device (not shown) for positioning the area a to be measured to a correct measuring position. The outer cover is arranged on the base and used for providing a shading range. Specifically, the base may be made of plastic, the auxiliary device for measuring and positioning may be an auxiliary wrist fixing jig, the cover may be a shielding environmental interference baffle, and the cover may be made of a full-wave band non-penetrable material, but the present invention is not limited thereto.

The optical imaging system 200 is disposed in the housing for capturing an image of a direction angle of the region a to be measured, and includes an imaging module 202, an imaging polarizer 204, and a band rejection filter set 206.

Referring to fig. 1, fig. 2A and fig. 2B, fig. 2A is a schematic diagram illustrating an architecture of an optical imaging system 200 in the embodiment of fig. 1, and fig. 2B is another schematic diagram illustrating an architecture of the optical imaging system 200 in the embodiment of fig. 1. In the embodiment of fig. 2A, the imaging module 202 includes an imaging lens 2022 and an Image sensor (Image sensor)2024, wherein the imaging lens 2022 may include a plurality of lenses, and the number and arrangement of the lenses are not essential features of the present invention and will not be described herein again. The image sensor 2024 may be a Charge-coupled device (CCD) or a Complementary metal-oxide-semiconductor (CMOS), and the present invention is not limited thereto.

In the embodiment of fig. 2A, the imaging polarizer 204 may be located between the band rejection filter set 206 and the image sensor 2024 of the imaging module 202, and in the embodiment of fig. 2B, the band rejection filter set 206 may be located between the imaging polarizer 204 and the image sensor 2024 of the imaging module 202, so that the optical image pulse measuring system of the present invention can adjust the positions of the band rejection filter set 206, the imaging polarizer 204 and the imaging module 202, especially the image sensor 2024, according to practical requirements, and the present invention is not limited by the foregoing description or the contents disclosed in the drawings. The imaging polarizer 204 may be a linear, circular or elliptical polarizer, but the present invention is not limited thereto.

Furthermore, the band rejection filter set 206 may employ a Single Multi-band filter or a plurality of Single-band filters; preferably, the single band filter may be a Notch filter (Notch filter), but the present invention is not limited thereto. Specifically, the band rejection filter set 206 may include less than three single band filters. More specifically, as shown in fig. 2A, since the band-reject filter set 206 is used to exclude the overlapping signals of the blue-green band space and the green-red band space in the present invention, the band-reject filter set 206 may include a first band-reject filter 2062 and a second band-reject filter 2064, and the related conditions of the band-reject filter set 206 will be described in detail in the following embodiments and will not be described herein.

As shown in fig. 1, the light source module 300 is disposed at the periphery of the optical imaging system 200, and the light source module 300 includes a light source (not shown) and a light source polarizer (not shown). Specifically, the light source module 300 may be disposed on at least one side of the optical imaging system 200 or disposed around the optical imaging system 300, wherein the light source polarizer is located between the light source and the region a to be measured, and may be a linear, circular or elliptical polarizer, but the present invention is not limited thereto. The Light source 304 may provide Light in the visible Light band, and may be a Light-emitting diode (LED) flash lamp or a Stroboscopic lamp (strobospic lamp). It should be noted that the number of the light source modules 300 may be two or more according to actual requirements, and the two light source modules 300 are disposed around the periphery of the optical imaging system 200 to provide better brightness for the region a to be measured, and the present invention is not limited to the disclosure of the foregoing description and the accompanying drawings.

The circuit module 400 may be disposed in the base and electrically connected to the optical imaging module 200 and the light source module 300, and the circuit module 400 may include a power control circuit 402, a data transmission circuit 404, and a synchronization signal control circuit 406, wherein the power control circuit 402 may be configured to control circuit power sources that may be included in the aforementioned components, the data transmission circuit 404 may be configured to transmit information of an image captured by the optical imaging system 200 to the operation module 500, and the synchronization signal control circuit 406 may be configured to synchronously control the optical imaging module 200 and the light source module 300. In addition, the data transmission circuit 404 may include a wireless communication transmission module (not shown) or a wired communication transmission module (not shown), wherein the wireless communication transmission module may be a bluetooth wireless communication transmission module or an infrared wireless communication transmission module, but the invention is not limited thereto.

The operation module 500 is connected to the circuit module 400 through a signal, so as to receive the image information captured by the optical imaging system 200 through the data transmission circuit 404 of the circuit module 400, and analyze and operate the image information through the operation module 500 to output a pulse measurement result information, so the operation module 500 can be any module capable of completing the above actions, such as a microprocessor, an intelligent mobile device, a personal computer or a server, but the present invention is not limited thereto. Furthermore, although not shown, the operation module 500 may comprise a data operation unit (not shown) and an analysis database (not shown). Preferably, the data operation unit may include a computer processor (not shown) or a mobile device operation unit (not shown), and the data operation unit may further analyze the image information captured by the optical imaging system 200 by a principal Component Analysis (principal Component Analysis) or an independent Component Analysis using the computer processor or the mobile device operation unit, so as to extract and calculate a color image occupying the largest Component in the image information or a red image Component presented by hemoglobin, compare the color image with the image information stored in the Analysis database or an image Component of a specific color, and determine the pulse condition of the subject according to the pulse processing information of the three pressing depths of the float, the middle, and the sink at the three positions of the wrist size, the off, and the size, thereby obtaining a more accurate pulse condition measurement result.

The display module 600 is connected to the operation module 500 for receiving and displaying the image and the pulse measurement result information. Further, the display module 600 may display interactive information of a human-machine interface (not shown) for a testee or a professional medical staff to operate, and display the image and pulse measurement result information received from the operation module 500, and the display module 600 may specifically be a Thin film transistor liquid crystal display (TFT-LCD), an Active matrix having an Active-matrix emitting diode (AMOLED) or a Flexible display (Flexible display), but the present invention is not limited thereto.

Furthermore, although not shown in the drawings, the operation module 500 and the display module 600 of the present invention can be divided into two different devices, for example, the operation module 500 and the display module 600 can be respectively another independent microprocessor, a mobile device or a personal computer, and the data transmission circuit 404 with the wireless transmission communication function can be used between the operation module 500 or the display module 600 and the circuit module 400 for transmitting and receiving the image information. Alternatively, the operation module 500 and the display module 600 may be integrated into a mobile device or a personal computer, or may be integrated and built in a housing or a base, and the present invention is not limited to any embodiment or example.

Referring to fig. 3 and 4, fig. 3 is a schematic diagram illustrating an optical image pulse measuring system 100 according to an embodiment of the present invention, and fig. 4 is a partial cross-sectional view illustrating the optical image pulse measuring system 100 according to the embodiment of fig. 3. In the embodiment of fig. 3, the optical image pulse measuring system 100 is used for detecting a pulse condition at a wrist 11 (i.e. the aforementioned region a to be measured) of a hand 10 of a subject, and the optical image pulse measuring system 100 is substantially as shown in fig. 1 and fig. 2A, and includes a base 110, a housing 120, an optical imaging system 200, a light source module 300, a circuit module 400, an operation module 500, and a display module 600.

As shown in fig. 3 and 4, the base 110 of the optical image pulse measurement system 100 may be a rectangular base, and the cover 120 is a generally semicircular housing disposed on the base 110 for providing a light shielding range (not shown). Specifically, the light-shielding range is located between the base 110 and the housing 120, and the region to be measured is located in the light-shielding range of the housing 120, so as to further prevent the external light source from affecting the pulse measurement accuracy of the optical image pulse measurement system 100.

The light source module 300 is disposed around the optical imaging system 200 and abuts against the housing 120, and the region to be measured is located in the light-shielding range of the housing 120 and surrounded by the optical imaging system 200 and the light source module 300, so that the optical image pulse measuring system 100 of the present invention provides sufficient light for measuring the pulse condition at the wrist 11 of the subject, thereby increasing the quality of the captured image of the optical imaging system 200. Preferably, the distance between the optical imaging system 200 and the region to be measured may be 0mm to 300 mm; more preferably, the distance between the optical imaging system 200 and the region to be measured may be 0mm to 10 mm. Preferably, in the embodiment of fig. 4, the number of the light source modules 300 may be two, the two light source modules 300 are disposed around the optical imaging system 200 in an opposite manner, and the two light source modules 300 are respectively abutted against the outer cover 120, so as to effectively maintain the spatial size of the light shielding region and provide sufficient light source for the light shielding region, but the invention is not limited thereto. In addition, in the embodiments of fig. 3 and 4, the light source polarizer 302 of the light source module 200 may be located between the light source 304 and the wrist 11, and the light source polarizer 302 and the imaging polarizer 204 of the optical imaging system 200 may be orthogonally configured to allow only one direction of light to pass through.

In addition, other components of the optical image pulse measuring system 100 of fig. 3 and 4, such as the circuit module 400, the operation module 500 and the display module 600, are already described above, and are not repeated herein.

The related conditions and the efficacy of the rejection filter set 206 of the image pulse measuring system 100 of the present invention will be described in detail below. First, please refer to fig. 5A, which illustrates a response diagram of an image sensor (not shown) of a conventional optical image pulse measuring system (not shown) without a rejection filter set. As shown in fig. 5A, in the case of not configuring the rejection filter set, in the pulse raw RGB data sensed by the image sensor of the optical imaging system (not shown), since the blue (B) band W1 and the green (G) band W2 have the overlapping signal O1, and the green (G) band W2 and the red (R) band W3 have the overlapping signal O2, each converted independent component cannot effectively present the captured pulse raw image characteristics of the wrist 11 of the subject, and the data in fig. 5A are summarized as shown in table 1:

TABLE 1

#	Center band (nm)	Full amplitude half peak (nm)
			W1	450+/-2	+/-50
W2	530+/-2	+/-50
			W3	625+/-2	+/-50
O1	490+/-2	+/-25
			O2	590+/-2	+/-25

Therefore, to further improve the signal overlapping problem between the blue-green band space and the green-red band space, the band-rejection filter set 206 of the optical image pulse measurement system in the embodiment of fig. 3 may include a first band-rejection filter 2062 and a second band-rejection filter 2064 as shown in fig. 2A, and the centers of the bands to be excluded by the first band-rejection filter 2062 and the second band-rejection filter 2064 may be set as the intersection point Q1 of the blue-green band and the intersection point Q2 of the green-red band in fig. 5A. Preferably, in the embodiment of fig. 3, the full width at half maximum of the band rejection filter set 206 may be less than 40nm, and the Peak Quantum efficiency (Quantum efficiency) of the red band of the image sensor 2024 may be less than the Peak Quantum efficiency of the green band or the blue band.

Specifically, in the embodiment of fig. 3, the first band-reject filter 2062 is a blue-green band filter and has a band-reject band upper limit wavelength of WL1, and the second band-reject filter 2064 is a green-red band filter and has a band-reject band lower limit wavelength of WL2, which satisfies the following conditions: 70nm < WL2-WL1<100 nm.

Fig. 5B is a diagram illustrating transmittance data of the first band-stop filter 3062 of the optical image pulse measuring system 100 in the embodiment of fig. 3. Specifically, the first band-reject filter 2062 can reject light with a wavelength band of 471nm to 504nm, and has a central wavelength band of 488nm, a full width at half maximum of 15nm, and a band deviation value of plus or minus 2nm, and as shown in fig. 5B, the transmittance of the first band-reject filter 2062 at a wavelength of 482nm to 498nm is actually less than 50%.

Fig. 5C is a graph showing transmittance data of the second band-stop filter 2064 of the optical image pulse measuring system 100 in the embodiment of fig. 3. Specifically, the second band-reject filter 2064 can reject light with a wavelength range of 572nm to 616nm, and has a central wavelength range of 594nm, a full width at half maximum of 23nm, and a wavelength deviation of plus or minus 2nm, whereas as shown in fig. 5C, the transmittance of the second band-reject filter 2064 at a wavelength of 583nm to 603nm is actually less than 50%.

Referring to fig. 5D, a response diagram of the image sensor 2024 of the optical image pulse measuring system 100 of the embodiment of fig. 3 is shown. The data collation shown in fig. 5D is shown in table 2:

TABLE 2

#	Center band (nm)	Full amplitude half peak (nm)
			W1	450+/-2	+/-25
W2	520+/-2	+/-25
			W3	660+/-2	+/-25

As can be seen from fig. 5D and table 2, after the rejection filter set 206 is disposed in the optical image pulse measuring system 100 of the present invention, the problem of signal overlapping between the blue band W1 and the green band W2 and between the green band W2 and the red band W3 in the original RGB data of the pulse detected by the image sensor 2024 of the optical imaging system 200 is actually improved.

Furthermore, although not shown in the drawings, the optical image pulse measuring system of the present invention can also configure the band rejection filter set 206 as a band pass filter according to the actual requirement, and the purpose of eliminating the signal overlapping between the blue-green band and the green-red band can be achieved, and the present invention is not limited to the content disclosed in the foregoing description and drawings. Specifically, the band pass filter can be a filter capable of passing light with a wavelength range of 400nm to 471nm, 504nm to 572nm or 616nm to 700 nm.

Fig. 6 is a schematic diagram illustrating a usage state of the optical image pulse measuring system 100 according to the embodiment of fig. 3. The components and the connection relationship of the optical image pulse measuring system 100 of the present invention are roughly described as above, and the optical image pulse measuring system 100 of the embodiment of fig. 3 is supplemented with the structure of the optical image pulse measuring system 100 shown in fig. 1 to describe the operation method of the optical image pulse measuring system 100 and the detection process for detecting the pulse condition of the wrist 11 of the hand 110 of the subject.

First, as shown in fig. 6, when a subject intends to use the optical image pulse measurement system 100 of the present invention to measure a pulse, the hand 10 is first placed in the light-shielding range between the base 110 and the outer cover 120 with the palm facing upward, and the wrist 11 is placed on the auxiliary measurement positioning device (not shown) of the base 110 to position the wrist 11 to a correct measurement position.

Then, the display module 600 sends a control signal to the synchronous signal control circuit 406 of the circuit module 400 through the human-computer interface provided by the display module 600, so as to trigger the light source module 300 and the optical imaging system 200, thereby starting the detection process of the pulse condition state. In the aforementioned pulse condition detection process, the optical imaging system 200 automatically searches for the area with the strongest image signal, i.e., the wrist 11 with the strongest periodic variation signal of blood volume, and captures the continuous image information of the wrist 11 within 5 seconds through the imaging module 202, the imaging polarizer 204 and the rejection filter 206, and then transmits the continuous image information to the computing module 500 through the data transmission circuit 404 of the circuit module 400 for synchronous signal processing.

Then, the operation module 500 performs image information preprocessing on each image information after acquiring the continuous image information, executes a related analysis and operation procedure, compares the image information with image information stored in an analysis database (not shown) of the operation module 500 or image components of a specific color to output a pulse measurement result, integrates pulse measurement results obtained by analyzing each image information according to the capturing sequence thereof to output a 3D signal model of the pulse measurement result, and can analyze pulse information corresponding to three pressing depths of the cun, the guan and the chi positions of the wrist 11 to obtain an accurate pulse measurement result.

To sum up, the optical image pulse measurement system of the present invention can effectively eliminate the overlapping signals in the blue-green band space and the green-red band space through the configuration of the band rejection filter set, so that the light wave characteristics of the image signals are not interfered by the overlapping signals, and further provide better image quality after being converted by the independent component analysis method, so as to further visualize the pulse information and standardize the measurement technique of the pulse and the data of the pulse result.

Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.

Claims

1. An optical image pulse measuring system, comprising:

a base, including a measurement positioning auxiliary device;

a housing disposed on the base for providing a light shielding range;

the optical imaging system is arranged in the outer cover and used for capturing an image of a direction angle of a region to be detected;

the light source module is arranged at the periphery of the optical imaging system and comprises a light source and a light source polaroid;

the circuit module is electrically connected with the optical imaging system and the light source module and comprises a power supply control circuit, a data transmission circuit and a synchronous signal control circuit;

the operation module is in signal connection with the circuit module; and

and the display module is in signal connection with the operation module.

2. The optical image pulse measuring system of claim 1, wherein the optical imaging system comprises a band-stop filter set, an imaging polarizer and an imaging module.

3. The optical image pulse measurement system of claim 2, wherein the band rejection filter set comprises three single band rejection filters.

4. The optical image pulse measuring system of claim 2, wherein the rejection filter set comprises a notch filter.

5. The optical image pulse measurement system of claim 2, wherein the full width at half maximum of the band rejection filter set is less than 40 nm.

6. The optical image pulse measuring system of claim 2, wherein the band-rejection filter set comprises a first band-rejection filter and a second band-rejection filter.

7. The system of claim 6, wherein the first band rejection filter is a blue-green band filter and has a band rejection band upper limit wavelength WL1, and the second band rejection filter is a green-red band filter and has a band rejection band lower limit wavelength WL2, which satisfies the following conditions:

70nm<WL2-WL1<100nm。

8. the system of claim 1, wherein the light source module is disposed on at least one side of the optical imaging system or disposed around the optical imaging system.

9. The system of claim 1, wherein the light source polarizer is disposed between the light source and the region under test.

10. The optical image pulse measurement system of claim 2, wherein the imaging polarizer and the light source polarizer are linear polarizers.

11. The optical image pulse measurement system of claim 2, wherein the light source polarizer and the imaging polarizer are orthogonally disposed.

12. The system of claim 2, wherein the imaging module comprises an imaging lens and an image sensor.

13. The optical image pulse measurement system of claim 12, wherein the peak quantum efficiency of the red band of the image sensor is less than the peak quantum efficiency of the green band or the blue band.

14. The optical image pulse measurement system of claim 12, wherein the rejection filter set is located between the imaging polarizer and the image sensor.

15. The optical image pulse measurement system of claim 12, wherein the imaging polarizer is located between the rejection filter set and the image sensor.

16. The optical image pulse measuring system of claim 1, wherein the region under test is located within the light-blocking area of the housing.

17. The system of claim 1, wherein the data transmission circuit comprises a wireless communication transmission module or a wired communication transmission module.

18. The system of claim 1, wherein the computing module comprises a data computing unit and an analysis database.

19. The optical image pulse measuring system of claim 18, wherein the data computing unit comprises a computer processor or a mobile device computing unit.

20. The optical image pulse measuring system of claim 1, wherein a distance between the optical imaging system and the region to be measured is 0mm to 300 mm.

21. The optical image pulse measuring system of claim 20, wherein a distance between the optical imaging system and the region to be measured is 0mm to 10 mm.