A health indicator detection device

Abstract

The application provides a health index detection device, and relates to the technical field of medical detection equipment, which comprises a power supply unit, a photoelectric detector, a processing unit and a first optical film, the photoelectric detector and the processing unit are arranged on a circuit board, and the power supply unit is a solar cell for supplying power to the circuit board. The first optical film can form a detection light beam based on natural light transmitted thereto, the detection light beam is transmitted to a target area through the circuit board, is transmitted to a preset depth of the target area, and is reflected to form a reflected light beam at the preset depth of the target area. The photoelectric detector can form a detection signal based on the reflected light beam, and the processing unit obtains the health index of the detection target based on the detection signal, thereby realizing health index detection of the detection target. It can be seen that the detection device can realize detection by using natural light, cancels the inherent light source, provides a feasible scheme for the lightweight and miniaturization of the detection device, and also has the advantages of low power consumption and green environmental protection.

Description

Technical Field

[0001] This application relates to the field of medical testing equipment technology, and in particular to a health indicator testing device. Background Technology

[0002] With the improvement of living standards, people are paying more and more attention to their own health, such as heart rate, blood oxygen, blood sugar, and blood pressure. This has led to the emergence of various health indicator monitoring devices, especially lightweight portable devices, which greatly facilitate the monitoring of various health indicators. Therefore, how to achieve lightweight health indicator monitoring devices has become a key research focus for those skilled in the art. Summary of the Invention

[0003] In view of this, this application provides a health indicator detection device, the scheme of which is as follows:

[0004] A health indicator detection device, comprising:

[0005] The device body, which is used to be applied to the target area of ​​the detection target, includes:

[0006] Power supply unit, wherein the power supply unit is a solar cell;

[0007] A photodetector and a processing unit are disposed on a circuit board, the power supply unit is used to power the circuit board, and the photodetector is located on the side of the circuit board facing the target area;

[0008] A first optical film disposed between the circuit board and the power supply unit;

[0009] Wherein, the plane on which the circuit board is located is parallel to the plane on which the power supply unit is located. The initial light beam is transmitted sequentially through the power supply unit and the first optical film. The first optical film forms a detection light beam based on the initial light beam transmitted thereon. The detection light beam includes at least a first light beam of a first wavelength. The transmission wavelength of the first optical film includes the wavelength of the detection light beam. The initial light beam is natural light.

[0010] The detection beam is transmitted through the circuit board to the target area, penetrates the target area to a preset depth, and is reflected at the preset depth of the target area to form a reflected beam.

[0011] The photodetector generates a detection signal based on the reflected light beam, and the processing unit obtains the health indicators of the target based on the detection signal.

[0012] Optionally, the power supply unit includes power supply structures and transparent structures arranged at intervals along a first direction, wherein the first direction is parallel to the plane in which the power supply unit is located;

[0013] The power supply structure is used to power the circuit board, and the initial light beam is transmitted to the first optical thin film through the transparent structure to form the detection light beam;

[0014] The circuit board includes a first through hole, through which the detection beam is transmitted to the target area.

[0015] Optionally, in the power supply structures arranged along the first direction, the distance between adjacent power supply structures corresponding to the first through hole is greater than the distance between adjacent power supply structures not corresponding to the first through hole.

[0016] Optionally, the power supply unit includes a second through hole;

[0017] The initial beam is transmitted to the first optical thin film through the second through-hole to form the detection beam;

[0018] The circuit board includes a first through hole, which is opposite to a second through hole, and the detection beam is transmitted sequentially to the target area through the first through hole.

[0019] Optionally, along a direction perpendicular to the plane of the circuit board, the center of the first through hole and the center of the second through hole are located on the same straight line;

[0020] Along a direction parallel to the plane of the circuit board, the width of the first through hole is not less than the width of the second through hole.

[0021] Optionally, the photodetector includes N detectors, where N ≥ 2;

[0022] The N detectors are arranged along the direction surrounding the first through hole, and the N detectors are arranged symmetrically with respect to the first through hole;

[0023] Wherein, N=2, the N detectors are located on opposite sides of the first through hole, and the line connecting the N detectors passes through the center of the first through hole;

[0024] N≥3, along the direction surrounding the first through hole, the angle between the i-th detector and the (i+1)-th detector and the center of the first through hole is the first angle, the angle between the (i+1)-th detector and the (i+2)-th detector and the center of the first through hole is the second angle, the first angle is equal to the second angle, and 1≤i≤N-3.

[0025] Optionally, the device body further includes N second optical films corresponding one-to-one with the N detectors. The N second optical films are respectively located on the light-incident side of the corresponding detectors, and the transmission wavelength of each second optical film corresponds to the wavelength of one of the detection beams.

[0026] The bandwidth of the second optical thin film ranges from 10nm to 20nm, including the endpoint values.

[0027] Optionally, the device body further includes N second optical films corresponding one-to-one with the N detectors. The N second optical films are respectively located on the light-incident side of the corresponding detectors, and the transmission wavelength of each second optical film corresponds to the wavelength of one of the detection beams.

[0028] The bandwidth of the second optical thin film ranges from 10nm to 20nm, including the endpoint values.

[0029] Optionally, N=3; or

[0030] N=4; or

[0031] N=6.

[0032] Optionally, the detection beam further includes a second beam of a second wavelength and a third beam emitting a third wavelength;

[0033] The first wavelength is 660nm, the second wavelength is 520nm, and the third wavelength is 940nm.

[0034] Optionally, the device body further includes a first flexible film, which is located between the power supply unit and the circuit board, and the first optical film is located on the side of the first flexible film facing the power supply unit;

[0035] The health indicator detection device further includes a second flexible film and a third flexible film. The second flexible film is located on the side of the power supply unit away from the circuit board, and the third flexible film is located on the side of the circuit board away from the power supply unit. The second flexible film and the third flexible film are used to protect the device body.

[0036] The first flexible film, the second flexible film, and the third flexible film are all transparent flexible films.

[0037] Optionally, the power supply unit is a solar thin-film battery;

[0038] The circuit board is a flexible circuit board.

[0039] Optionally, the device body further includes a data transmission unit, which is communicatively connected to the processing unit and is used to output the acquired health indicators of the detection target.

[0040] Compared with related technologies, the beneficial effects of the technical solution of this application are as follows:

[0041] The detection device includes a power supply unit, a photodetector, a processing unit, and a first optical thin film. The photodetector and processing unit are mounted on a circuit board. The power supply unit is a solar cell that powers the circuit board. The first optical thin film forms a detection beam based on natural light transmitted to it. The detection beam is transmitted through the circuit board to the target area, penetrates the target area to a preset depth, and is reflected at the preset depth to form a reflected beam. The photodetector is located on the transmission path of the reflected beam, allowing the reflected beam to reach it. A detection signal is formed based on the reflected beam, and the processing unit obtains the health indicators of the target based on the detection signal, thus realizing the detection of the target's health indicators. Therefore, the first optical thin film of this detection device can filter the natural light transmitted to it to form a detection beam. In other words, when performing health indicator detection, this device can utilize natural light to form a detection beam, eliminating the inherent light source in traditional detection devices. This effectively reduces the size and weight of the detection device, as well as power consumption, providing a feasible solution for lightweight, miniaturized, and low-power detection devices. At the same time, natural light (i.e., sunlight) is a high-quality natural light source with high brightness and good parallelism, which can ensure the beam quality of the detection beam formed based on natural light, thereby ensuring the accuracy of health indicator detection and making the detection device highly reliable.

[0042] In addition, solar energy is a typical green energy source, so this detection device is lightweight, miniaturized, and low-power, while also being environmentally friendly. It is in line with the current trend of energy conservation and emission reduction, and will help the detection device to become more widespread. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0044] The structures, proportions, sizes, etc., shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this application. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0045] Figure 1 An exploded view of a health indicator detection device provided in this application;

[0046] Figure 2 A schematic diagram of the power supply unit in a health indicator detection device provided in this application;

[0047] Figure 3 A schematic diagram of the power supply unit in another health indicator detection device provided in this application;

[0048] Figure 4 Exploded view of another health indicator detection device provided in this application;

[0049] Figure 5 This is a schematic diagram of the filtering of the second optical thin film in a health indicator detection device provided in this application. Detailed Implementation

[0050] The embodiments of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0051] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0052] As described in the background section, how to achieve lightweighting of health indicator detection devices has become a key research focus for those skilled in the art. Traditional detection devices typically include a built-in light source to generate the detection beam. However, the built-in light source or the components it contains occupy a certain amount of space and have a certain weight, making it difficult to reduce the size and weight of the detection device, which is not conducive to lightweighting. Furthermore, it also leads to increased power consumption, which is not conducive to the green and environmentally friendly nature of the detection device, thus limiting the widespread development of health indicator detection devices.

[0053] Based on the above, this application provides a health indicator detection device, such as... Figure 1As shown, Figure 1 This is a schematic diagram of a health indicator detection device provided in this application. The detection device includes:

[0054] The device body is used to be applied to the target area of ​​the target being detected. That is, when the detection device performs health indicator detection, the device body is applied to the target area of ​​the target being detected. It should be noted that the target area to which the device body is applied can be human skin; that is, the target being detected can be a human body, and the target area can be a part of human skin. However, this application does not limit this; the target being detected can also be an animal body, and the target area can be a part of the skin of an animal body.

[0055] The device itself may include:

[0056] Power supply unit 102, which can be a solar cell.

[0057] The photodetector 202 and processing unit 204 are disposed on the circuit board 200, and the power supply unit 102 is used to supply power to the circuit board 200. That is, the power supply unit 102 can be used to supply power to the photodetector 202 and processing unit 204 disposed on the circuit board 200. The photodetector 202 is located on the side of the circuit board 200 facing the target area.

[0058] A first optical thin film 104 is disposed between the circuit board 200 and the power supply unit 102. The plane of the circuit board 200 is parallel to the plane of the power supply unit 102; that is, the detection device includes the parallel circuit board 200 and the solar panel (power supply unit 102). An initial light beam is transmitted sequentially through the power supply unit 102 and the first optical thin film 104. The first optical thin film 104 has a filtering function, thereby forming a detection beam based on the initial light beam transmitted thereto. This detection beam includes at least a first wavelength. It should be noted that the initial light beam can be natural light, and the transmission wavelength of the first optical thin film 104 includes the wavelength of the detection beam, so that the first optical thin film 104 can form a detection beam based on the initial light beam transmitted thereto.

[0059] After the first optical thin film 104 forms a detection beam based on the natural light transmitted to it, the detection beam can be transmitted to the target area through the circuit board 200, penetrate the target area to a preset depth, and be reflected at the preset depth of the target area to form a reflected beam.

[0060] The photodetector 202 is located on the transmission path of the reflected beam, so that the reflected beam can be transmitted to the photodetector 202, or in other words, the photodetector 202 can receive the reflected beam, so that the photodetector 202 can form a detection signal based on the reflected beam, and the processing unit 204 obtains the health indicators of the target based on the detection signal, that is, realizes the detection of the health indicators of the target.

[0061] As described above, the first optical thin film 104 of the detection device can filter the natural light transmitted to it to form a detection beam, which can then be used to detect the health indicators of the target. In other words, when performing health indicator detection, this device can utilize natural light to form the detection beam. Compared to related technologies, this eliminates the inherent light source in traditional detection devices, effectively reducing the size and weight of the device, as well as lowering power consumption. This provides a feasible solution for lightweighting, miniaturization, and low-power consumption of detection devices, contributing to the widespread development of health indicator detection devices. Simultaneously, natural light (i.e., sunlight) is a high-quality natural light source with high brightness and good parallelism, ensuring the beam quality of the detection beam formed based on natural light, thereby guaranteeing the accuracy of health indicator detection and resulting in high reliability of the detection device.

[0062] In addition, the inspection device is powered by solar cells, which is a typical green energy source. This makes the device lightweight, miniaturized, and low-power, and it does not require frequent charging. It is also environmentally friendly, in line with the current trend of energy conservation and emission reduction, and will help the device become more widely used.

[0063] In one embodiment of this application, such as Figure 2 As shown, Figure 2 This is a schematic diagram of a health indicator detection device provided in this application. The power supply unit 102 includes power supply structures 106 and transparent structures 108 arranged at intervals along a first direction. Alternatively, it can be understood that along the first direction, the power supply unit 102 includes multiple power supply structures 106, and a transparent structure 108 is disposed between every two power supply structures 106. The first direction is parallel to the plane where the power supply unit 102 is located.

[0064] The power supply structure 106 is used to supply power to the circuit board 200, that is, the power supply structure 106 can supply power to the photodetector 202 and the processing unit 204 on the circuit board 200. The initial light beam is transmitted to the first optical thin film 104 through the transparent structure 108 to form a detection light beam. The circuit board 200 includes a first through hole 1, through which the detection light beam is transmitted to the target area. It should be noted that the multiple power supply structures 106 arranged along the first direction on the circuit board 200 can be electrically connected in series or parallel, and then electrically connected to the circuit board 200 to supply power to the circuit board 200. Alternatively, all multiple power supply structures 106 can be electrically connected to the circuit board 200 to supply power to the circuit board 200.

[0065] As described above, the power supply unit 102 includes a power supply structure 106 and a transparent structure 108 for light transmission. This allows the initial light beam (natural light) to continue transmitting through the transparent structure 108 between adjacent power supply structures 106 when it reaches the power supply unit 102. Thus, the power supply unit 102 can both power the circuit board 200 and allow the initial light beam to pass through, achieving both power generation and light transmission functions. The initial light beam can be transmitted through the transparent structure 108 of the power supply unit 102 to the first optical film 104 to form a detection beam. The power supply structure 106 in the power supply unit 102 can power the photodetector 202 and the processing unit 204, enabling health detection of the target based on the detection beam and obtaining the target's health indicators.

[0066] It should be noted that the transparent structure 108 between the adjacent power supply structures 106 can be a transparent structure that completely fills the space between the adjacent power supply structures 106, or it can be composed of a transparent structure that partially fills the space between the adjacent power supply structures 106 and gaps where no transparent structure is filled. It should also be noted that, based on the power supply unit 102 described in the above two embodiments, this application does not limit the distance between two adjacent power supply structures 106, that is, it does not limit the width of the transparent structure 108 between two adjacent power supply structures 106. It can be designed according to the transmittance requirements of the detection device for natural light. If more natural light is required, the width of the transparent structure 108 between two adjacent power supply structures 106 should be larger; if less natural light is required, the width of the transparent structure 108 between two adjacent power supply structures 106 should be smaller, depending on the specific situation.

[0067] In one embodiment of this application, such as Figure 3 As shown, Figure 3This is a schematic diagram of the structure of a health indicator detection device provided in this application. In the power supply structures 106 arranged along the first direction (i.e., in the power supply unit 102), the distance between two adjacent power supply structures 106 corresponding to the first through hole 1 is greater than the distance between two adjacent power supply structures 106 not corresponding to the first through hole 1. In other words, in the power supply structures 106 of the power supply unit 102, along the first direction, the distance between two adjacent power supply structures 106 in the region corresponding to the first through hole 1 is greater than the distance between two adjacent power supply structures 106 in the region not corresponding to the first through hole 1. Consequently, along the first direction, the width of the transparent structure 108 in the region corresponding to the first through hole 1 is greater than the width of the transparent structure 108 in the region not corresponding to the first through hole 1. This allows more of the initial light beam to continue transmitting through the transparent structure 108, thereby enabling more natural light to be used to form the detection light beam and ensuring the intensity of the detection light beam. The intensity of the detection beam also has a significant impact on the detection results. The stronger the intensity, the more accurate the detection results. Therefore, using more natural light to form a stronger detection beam can improve the accuracy of health indicator detection results and thus enhance the reliability of the detection device.

[0068] It should be noted that the first through-hole 1 on the circuit board 200 is typically located in its middle region, thus the distance between two adjacent power supply structures 106 located in the middle region of the power supply unit 102 is greater than the distance between two adjacent power supply structures 106 outside the aforementioned middle region, such as... Figure 3 As shown. However, this application does not limit this. If the first through hole 1 on the circuit board 200 is located in the edge region other than the middle region, then the distance between two adjacent power supply structures 106 located in the edge region of the power supply unit 102 is greater than the distance between two adjacent power supply structures 106 outside the aforementioned edge region.

[0069] In one embodiment of this application, such as Figure 4 As shown, Figure 4 This is a schematic diagram of a health indicator detection device provided in this application. The power supply unit 102 includes a second through hole 2, so that the initial light beam can be transmitted to the first optical thin film 104 through the second through hole 2 to form a detection light beam.

[0070] The circuit board 200 includes a first through hole 1, which is opposite to a second through hole 2. The detection beam is transmitted to the target area through the first through hole 1.

[0071] Based on the above, the power supply unit 102 can both power the circuit board 200 and allow the initial light beam to pass through and be transmitted, thus combining the functions of power generation and light transmission. Specifically, the initial light beam can be transmitted through the transparent structure 108 of the power supply unit 102 to the first optical thin film 104 to form a detection beam. The power supply structure 106 in the power supply unit 102 can also power the photodetector 202 and the processing unit 204, thereby enabling health detection of the target based on the detection beam and obtaining the health indicators of the target.

[0072] In one embodiment of this application, such as Figure 4 As shown, along the direction perpendicular to the plane where the circuit board 200 is located, the center of the first through hole 1 and the center of the second through hole 2 are located on the same straight line, so that the first through hole 1 and the second through hole 2 can be better aligned, thereby allowing the detection beam formed based on the initial beam to be better transmitted through the first through hole 1, and will not be blocked due to the difference in the correspondence between the first through hole 1 and the second through hole 2, which would affect the intensity of the detection beam and thus the accuracy of the detection result.

[0073] In addition, along the direction parallel to the plane of the circuit board 200, the width of the first through hole 1 is not less than the width of the second through hole 2. That is, the width of the detection beam transmitted through the first through hole 1 is at least not less than the width of the initial beam transmitted through the second through hole 2. This also allows the detection beam formed based on the initial beam to be transmitted through the first through hole 1 better, and it will not be blocked due to the difference in the correspondence between the first through hole 1 and the second through hole 2, which would affect the intensity of the detection beam and thus the accuracy of the detection result.

[0074] In one embodiment of this application, such as Figure 4 As shown, the photodetector 202 may include N detectors, or it can be understood that the device body of the detection device may include N photodetectors 202, where N≥2.

[0075] The aforementioned N detectors are arranged sequentially along the direction surrounding the first through hole 1, and the N detectors are arranged symmetrically with respect to the first through hole 1.

[0076] Where N=2, the N detectors are located on opposite sides of the first through hole 1, and the line connecting the N detectors passes through the center of the first through hole 1, so that the N detectors are symmetrically arranged with respect to the first through hole 1.

[0077] N≥3, along the direction surrounding the first through hole 1, the angle between the line formed by the i-th detector and the (i+1)-th detector and the center of the first through hole 1 is the first angle, and the angle between the line formed by the (i+1)-th detector and the (i+2)-th detector and the center of the first through hole 1 is the second angle. The first angle is equal to the second angle, and 1≤i≤N-3, so that the N detectors are symmetrically arranged with respect to the first through hole 1.

[0078] As described above, the main body of the detection device can include multiple photodetectors 202, which are located around the first through-hole 1 and arranged symmetrically with respect to it. This allows the photodetectors 202 to be arranged in more directions around the first through-hole 1, so that even if the transmission direction of the detection beam is not strictly perpendicular to the first through-hole 1 and the second through-hole 2 (i.e., the detection beam is slightly tilted), the reflected beam can be received by at least one of the multiple photodetectors 202. In other words, the main body of the detection device can tolerate the tilt of the transmission direction of the detection beam, meaning that the device does not require the detection beam to be transmitted strictly in a vertical or specific direction. This reduces the operational difficulty of using the detection device for health indicator detection and makes it highly practical.

[0079] Alternatively, N=3, or N=4 (e.g. Figure 4 As shown in the figure), or N=6, that is, the number of photodetectors 202 in the device body can be 3, 4 or 6. However, this application does not limit this. In other embodiments of this application, under the condition that the photodetectors 202 can be arranged symmetrically with respect to the first through hole 1 and the space allows, the number of photodetectors 202 can also be other numbers, depending on the specific situation.

[0080] In one embodiment of this application, the device body further includes N second optical films (not shown in the figure) corresponding one-to-one with the aforementioned N detectors. This can also be understood as the device body further including N second optical films corresponding one-to-one with the N photodetectors 202. The aforementioned N second optical films are respectively located on the light-incident side of their respective detectors, and the transmission wavelength of each second optical film can correspond to the wavelength of one type of beam in the detection beam. That is, one second optical film transmits only one type of beam, and one photodetector 202 receives only one type of beam. This avoids beams of different wavelengths in the detection beam being received by the same photodetector 202, thereby avoiding crosstalk between beams of different wavelengths and affecting the signal-to-noise ratio of the PPG waveform output by the photodetector 202, ensuring a high signal-to-noise ratio for the PPG waveform. It should be noted that the PPG waveform is the core output signal of photoplethysmography (PPG). Its morphology and characteristics directly reflect changes in the human physiological state and can be used to obtain health indicators such as heart rate, blood oxygen saturation, and blood pressure, thus enabling the detection of health indicators.

[0081] In addition, the device body also includes N second optical films corresponding one-to-one with the aforementioned N detectors. Each of the N second optical films is located on the light-incident side of its corresponding detector, so that when the emitted light beam is transmitted to the photodetector 202, it must first pass through the second optical film. It is known that each second optical film only allows one type of detection light beam to pass through, and can also suppress interfering light beams other than the detection beam from transmitting to the photodetector 202, thus ensuring a high signal-to-noise ratio of the PPG waveform and guaranteeing the accuracy of the acquired health indicators.

[0082] The bandwidth of the second optical thin film ranges from 10nm to 20nm, including the endpoints. This means the passband of the second optical thin film can be relatively narrow, making it a narrowband optical thin film. This results in better monochromaticity and a higher signal-to-noise ratio for the detection beam transmitted to the photodetector 202 after passing through the second optical thin film. This further ensures the high signal-to-noise ratio of the PPG waveform and guarantees the accuracy of the acquired health indicators.

[0083] In one embodiment of this application, the detection beam further includes a second beam of a second wavelength and a third beam emitting a third wavelength. The first wavelength can be 660 nm, the second wavelength can be 520 nm, and the third wavelength can be 940 nm; that is, the detection beam can include beams of red light (first beam), green light (second beam), and infrared light (third beam). However, this application is not limited to this, and the detection beam may also include beams of other wavelengths, depending on the specific circumstances.

[0084] Based on the first beam, second beam, and third beam described above, the transmission curve of the second optical thin film can be as follows: Figure 5 As shown. It should be noted that, Figure 5 This is just a schematic diagram of the transmittance curve, but in reality, the transmittance of different light beams may be the same or different.

[0085] It should be noted that hemoglobin has a high absorption rate for red and green light. Therefore, when red or green light penetrates the skin and tissues, a portion is absorbed by the hemoglobin in the blood, while the remainder is reflected and received by the photodetector 202 (e.g., a photodiode) and converted into an electrical signal. When the heart beats, blood flows in the blood vessels, causing changes in local blood volume and the amount of hemoglobin. This, in turn, causes changes in the amount of light absorbed by the hemoglobin, resulting in fluctuations in the intensity of the reflected light. The photodetector 202 converts this periodic change in light intensity into an electrical signal, forming a signal similar to a PPG waveform. The processing unit 204 analyzes the periodic fluctuations of the PPG signal using an algorithm to calculate the target's heart rate (number of heartbeats per minute). Furthermore, the processing unit 204 can also estimate blood pressure by analyzing the PPG waveform.

[0086] Blood oxygen saturation (SpO2) can be defined as the percentage of oxyhemoglobin (HbO2) to total hemoglobin (Hb+HbO2). Oxyhemoglobin (HbO2) has strong absorption of infrared light (850nm~940nm) and weak absorption of red light (600nm~750nm), while deoxyhemoglobin (Hb) is the opposite, having strong absorption of red light and weak absorption of infrared light. By combining the differences in red and infrared light absorption, the proportion of oxyhemoglobin in the blood can be calculated, thus yielding blood oxygen saturation.

[0087] Based on the above, the detection device can obtain the heart rate and blood pressure of the target by detecting at least one of the first beam and the second beam in the detection beam, and can also obtain the blood saturation of the target by detecting the first beam and the third beam.

[0088] It should be noted that the method used by this detection device to obtain the above-mentioned heart rate, blood pressure and blood oxygen saturation can be the same as the method used by traditional LED light source detection devices, and will not be described in detail here.

[0089] In one embodiment of this application, such as Figure 1 and Figure 4 As shown, the device body also includes a first flexible film 302, which is located between the power supply unit 102 and the circuit board 200, and a first optical film 104 is located on the side of the first flexible film 302 facing the power supply unit 102.

[0090] The detection device also includes a second flexible film 304 and a third flexible film 306. The second flexible film 304 is located on the side of the power supply unit 102 away from the circuit board 200, and the third flexible film 306 is located on the side of the circuit board 200 away from the power supply unit 102. The second flexible film 304 and the third flexible film 306 are used to protect the device body.

[0091] The first flexible film 302, the second flexible film 304, and the third flexible film 306 are transparent films. The first flexible film 302 is a flexible and transparent film, thus it does not obstruct the transmission of the initial light beam. Therefore, the first optical film 104 can be placed between the power supply unit 102 and the circuit board 200 without affecting the formation of a detection beam based on the initial light beam by the first optical film 104. Similarly, the second and third flexible films 304 and 306 are transparent films, which also ensure that they protect the device body without obstructing the light beam transmitted to it. This protects the device body without affecting the beam transmission, thus ensuring the reliability of the detection device.

[0092] Optionally, the first flexible film 302, the second flexible film 304 and the third flexible film 306 may be wear-resistant flexible transparent plastic films, but this application does not limit them and it depends on the specific circumstances.

[0093] In one embodiment of this application, the power supply unit 102 can be a solar thin-film battery, and the circuit board 200 is an FPC flexible circuit board. Combined with the first flexible film 302, the second flexible film 304 and the third flexible film 306, the detection device can have a certain bendability and flexibility, so that it can be applied to target areas of different shapes, that is, it can be applied to more application scenarios and has strong practicality.

[0094] In one embodiment of this application, such as Figure 1 and Figure 4 As shown, the device also includes a data transmission unit 206, such as Bluetooth, which is communicatively connected to the processing unit 204 and used to output the acquired health indicators of the target. For example, the acquired health indicators of the target can be sent to electronic devices such as computers and mobile phones for storage or viewing via the data transmission unit 206.

[0095] In summary, this application provides a health indicator detection device, comprising: a power supply unit, a photodetector, a processing unit, and a first optical thin film. The photodetector and processing unit are mounted on a circuit board, and the power supply unit is a solar cell that powers the circuit board. The first optical thin film forms a detection beam based on natural light transmitted to it. This detection beam is then transmitted through the circuit board to a target area, penetrates the target area to a preset depth, and is reflected at that preset depth to form a reflected beam. The photodetector is located on the transmission path of the reflected beam, allowing the reflected beam to be transmitted to it. A detection signal is formed based on the reflected beam, and the processing unit acquires the health indicators of the target based on the detection signal, thus realizing the detection of the target's health indicators. Therefore, the first optical thin film of this detection device can filter the natural light transmitted to it to form a detection beam. In other words, when performing health indicator detection, this device can utilize natural light to form a detection beam, eliminating the inherent light source in traditional detection devices. This effectively reduces the size and weight of the detection device, as well as power consumption, providing a feasible solution for lightweight, miniaturized, and low-power detection devices. At the same time, natural light (i.e., sunlight) is a high-quality natural light source with high brightness and good parallelism, which can ensure the beam quality of the detection beam formed based on natural light, thereby ensuring the accuracy of health indicator detection and making the detection device highly reliable.

[0096] In addition, solar energy is a typical green energy source, so this detection device is lightweight, miniaturized, and low-power, while also being environmentally friendly. It is in line with the current trend of energy conservation and emission reduction, and will help the detection device to become more widespread.

[0097] The various embodiments in this specification are described in a progressive, parallel, or combined manner. Each embodiment focuses on its differences from other embodiments, and similar or identical parts between embodiments can be referred to interchangeably. For the apparatuses disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple, and relevant parts can be referred to the method section.

[0098] It should be noted that, in the description of this application, the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component centrally located at the same time.

[0099] It should also be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or apparatus comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or apparatus that includes the aforementioned element.

[0100] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A health indicator detection device, characterized in that, include: The device body, which is used to be applied to the target area of ​​the detection target, includes: Power supply unit, wherein the power supply unit is a solar cell; A photodetector and a processing unit are disposed on a circuit board, the power supply unit is used to power the circuit board, and the photodetector is located on the side of the circuit board facing the target area; A first optical film disposed between the circuit board and the power supply unit; Wherein, the plane on which the circuit board is located is parallel to the plane on which the power supply unit is located. The initial light beam is transmitted sequentially through the power supply unit and the first optical film. The first optical film forms a detection light beam based on the initial light beam transmitted thereon. The detection light beam includes at least a first light beam of a first wavelength. The transmission wavelength of the first optical film includes the wavelength of the detection light beam. The initial light beam is natural light. The detection beam is transmitted through the circuit board to the target area, penetrates the target area to a preset depth, and is reflected at the preset depth of the target area to form a reflected beam. The photodetector generates a detection signal based on the reflected light beam, and the processing unit obtains the health indicators of the target based on the detection signal.

2. The health indicator detection device according to claim 1, characterized in that, The power supply unit includes power supply structures and transparent structures arranged at intervals along a first direction, wherein the first direction is parallel to the plane in which the power supply unit is located. The power supply structure is used to power the circuit board, and the initial light beam is transmitted to the first optical thin film through the transparent structure to form the detection light beam; The circuit board includes a first through hole, through which the detection beam is transmitted to the target area.

3. The health indicator detection device according to claim 2, characterized in that, In the power supply structure arranged along the first direction, the distance between adjacent power supply structures corresponding to the first through hole is greater than the distance between adjacent power supply structures not corresponding to the first through hole.

4. The health indicator detection device according to claim 1, characterized in that, The power supply unit includes a second through hole; The initial beam is transmitted to the first optical thin film through the second through-hole to form the detection beam; The circuit board includes a first through hole, which is opposite to a second through hole, and the detection beam is transmitted to the target area through the first through hole.

5. The health indicator detection device according to claim 4, characterized in that, Along a direction perpendicular to the plane of the circuit board, the center of the first through hole and the center of the second through hole are located on the same straight line; Along a direction parallel to the plane of the circuit board, the width of the first through hole is not less than the width of the second through hole.

6. The health indicator detection device according to claim 2 or 4, characterized in that, The photodetector includes N detectors, where N ≥ 2, and the N detectors are evenly arranged along the direction surrounding the first through hole.

7. The health indicator detection device according to claim 6, characterized in that, The device body also includes N second optical films that correspond one-to-one with the N detectors. The N second optical films are located on the light-incident side of the corresponding detectors, and the transmission wavelength of each second optical film corresponds to the wavelength of one of the detection beams. The bandwidth of the second optical thin film ranges from 10nm to 20nm, including the endpoint values.

8. The health indicator detection device according to claim 6, characterized in that, N=3; or N=4; or N=6。 9. The health indicator detection device according to claim 1, characterized in that, The detection beam also includes a second beam with a second wavelength, and a third beam emitting a third wavelength; The first wavelength is 660nm, the second wavelength is 520nm, and the third wavelength is 940nm.

10. The health indicator detection device according to claim 1, characterized in that, The device body also includes a first flexible film, which is located between the power supply unit and the circuit board, and the first optical film is located on the side of the first flexible film facing the power supply unit. The health indicator detection device further includes a second flexible film and a third flexible film. The second flexible film is located on the side of the power supply unit away from the circuit board, and the third flexible film is located on the side of the circuit board away from the power supply unit. The second flexible film and the third flexible film are used to protect the device body. The first flexible film, the second flexible film, and the third flexible film are all transparent flexible films.

11. The health indicator detection device according to claim 10, characterized in that, The power supply unit is a solar thin-film battery; The circuit board is a flexible circuit board.

12. The health indicator detection device according to claim 1, characterized in that, The device body also includes a data transmission unit, which is communicatively connected to the processing unit and is used to output the acquired health indicators of the detection target.

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