Physiological parameter detection device and wearable device

Abstract

The application provides a physiological parameter detection device and a wearable device; in the physiological parameter detection device, not only can a plurality of physiological parameters be detected, but also a controller, a first detection unit and a second detection unit are all integrated in the package of a conventional and inexpensive semiconductor laser, so that the volume of the device is reduced; meanwhile, the physiological parameter detection device can be arranged on the wearable device, and in the detection process, the user posture does not need to be limited, so that continuous and unconscious physiological parameter detection in daily life is facilitated, so that not only the comfort of the user in the detection process is improved, but also the cost is reduced, and the application is facilitated to be popularized and implemented in practical application.

Description

Technical Field

[0001] This invention relates to the field of physiological parameter detection technology, and in particular to physiological parameter detection devices and wearable devices. Background Technology

[0002] With the continuous improvement of living standards, people are paying more and more attention to their health. Regular health checkups can help people understand their health status and make early diagnoses of some diseases. Routine health checkups require people to go to the hospital for specific examinations or use some simple home health testing devices to measure specific physiological indicators. Different physiological parameters often require different testing devices, which not only increases testing costs but also takes time and effort, causing considerable inconvenience to users. For example, when measuring blood pressure, the device uses the cuff method for indirect measurement, which not only compresses the user's blood vessels but also requires the user to maintain a certain posture, such as holding the same position for more than 20 seconds, thus causing considerable inconvenience. Therefore, how to perform physiological parameter testing while ensuring user comfort is an urgent problem to be solved. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a physiological parameter detection device and a wearable device to alleviate the above-mentioned problems.

[0004] In a first aspect, embodiments of the present invention provide a physiological parameter detection device, comprising: a semiconductor laser, a controller, a first detection unit, a second detection unit, and a conical lens; wherein the controller, the first detection unit, and the second detection unit are all integrated inside the package of the semiconductor laser, and a glass window is provided at the package outlet, the glass window forming a certain angle with the horizontal plane at the bottom of the package, and a conical lens is fixed on the side of the glass window away from the package; the laser emitted forward by the semiconductor laser enters the conical lens through the glass window and generates a Bessel beam in the conical lens, the Bessel beam irradiates the user's blood vessel, and is reflected by the blood vessel and its internal blood cells to generate feedback light; wherein the feedback light carries vascular detection information, including the expansion and contraction characteristics of the blood vessel wall and / or the Doppler frequency generated by the flow of red blood cells in the blood vessel. Information; feedback light returns to the semiconductor laser via a conical lens and a glass window, and undergoes feedback interference with the laser in the semiconductor laser to generate interference light; the semiconductor laser simultaneously emits interference light forward and backward, the forward-emitted interference light is reflected by the glass window to the first detection unit, so that the first detection unit generates a first photoelectric signal; the backward-emitted interference light is sent to the second detection unit, so that the second detection unit generates a second photoelectric signal; a controller is used to acquire the first photoelectric signal and the second photoelectric signal, and generate a detection signal based on the first photoelectric signal and the second photoelectric signal; and to send the detection signal to a remote terminal, so that the remote terminal generates the detection value of the user's physiological parameters based on the detection signal; wherein the physiological parameters include at least one of the following: blood pressure, blood lipids, blood oxygen saturation, blood glucose, blood ketones, body temperature, respiratory rate, and heart rate.

[0005] Optionally, the first detection unit is disposed on the inner wall of the semiconductor laser package.

[0006] Optionally, the height of the first detection unit from the bottom of the package meets a preset height.

[0007] Optionally, the preset height is 2mm~4mm.

[0008] Optionally, the second detection unit is located behind the semiconductor laser.

[0009] Optionally, the angle between the normal of the glass window and the direction of laser motion emitted forward by the semiconductor laser satisfies a preset angle.

[0010] Optionally, the preset angle is 9°~11°.

[0011] Optionally, the laser entering the conical lens satisfies a specified angle with the central axis of the conical lens.

[0012] Optionally, the device further includes a power supply module; wherein the power supply module is used to supply power to the semiconductor laser, the controller, the first detection unit, and the second detection unit.

[0013] Secondly, embodiments of the present invention also provide a wearable device, including the physiological parameter detection device described in the first aspect.

[0014] The embodiments of the present invention bring the following beneficial effects:

[0015] This invention provides a physiological parameter detection device and a wearable device. In the physiological parameter detection device, a forward-emitted laser beam from a semiconductor laser enters a conical lens through a glass window, generating a Bessel beam within the lens. This Bessel beam illuminates the user's blood vessels and is reflected by the vessels to generate feedback light. The feedback light passes through the conical lens and the glass window to the semiconductor laser, where it undergoes feedback interference with the laser beam, generating interference light. The semiconductor laser simultaneously emits interference light forward and backward. The forward-emitted interference light is reflected through the glass window to a first detection unit, causing the first detection unit to generate a first photoelectric signal. The backward-emitted interference light reaches a second detection unit, causing the second detection unit to generate a second photoelectric signal. A controller generates a detection signal based on the first and second photoelectric signals. The detection signal is then sent to a remote terminal, enabling the remote terminal to generate the detected values ​​of the user's physiological parameters based on the detection signal. Therefore, the aforementioned physiological parameter detection device can not only detect a variety of physiological parameters, but also integrate the controller, the first detection unit, and the second detection unit into the package of a conventional, inexpensive semiconductor laser, reducing the size of the device. At the same time, this physiological parameter detection device can be placed on wearable devices, and there is no need to limit the user's posture during the detection process, which facilitates continuous and imperceptible physiological parameter detection in daily life. This not only improves the user's comfort during the detection process, but also reduces costs, making it easier to promote and implement in practical applications.

[0016] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained through the structures particularly pointed out in the description and the drawings.

[0017] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a physiological parameter detection device provided in an embodiment of the present invention;

[0020] Figure 2 This is a balanced amplifier circuit diagram provided for an embodiment of the present invention.

[0021] icon:

[0022] 11-Semiconductor laser; 12-First detection unit; 13-Second detection unit; 14-Conical lens; 15-Glass window; 21-Transimpedance amplifier; 22-Analog-to-digital converter chip. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] To facilitate understanding of this embodiment, the embodiments of the present invention will be described in detail below.

[0025] This invention provides a physiological parameter detection device, such as... Figure 1 As shown, the device includes: a semiconductor laser 11, a controller (not shown), a first detection unit 12, a second detection unit 13, and a conical lens 14; wherein, the controller, the first detection unit 12, and the second detection unit 13 are all integrated inside the package of the semiconductor laser 11, and a glass window 15 is provided at the package outlet, the glass window 15 and the horizontal plane of the bottom of the package satisfying a certain angle (i.e., A conical lens 14 is fixed to the side of the glass window 15 away from the package. Therefore, this physiological parameter detection device reduces the size of the device and thus lowers the cost by integrating the controller, the first detection unit 12 and the second detection unit 13 into the package of a conventional and inexpensive semiconductor laser 11.

[0026] Specifically, the working principle of the above-mentioned physiological parameter detection device is as follows: the laser emitted forward by the semiconductor laser 11 enters the conical lens 14 through the glass window 15, and a Bessel beam is generated in the conical lens 14. The Bessel beam irradiates the user's blood vessels (e.g., Figure 1The image shows the blood vessels in the user's arm, and the feedback light is generated by the reflection of the blood vessels and their internal blood cells. The feedback light carries blood vessel detection information, which includes detection information of the blood vessel wall and detection information of blood cells inside the blood vessel, such as the expansion and contraction characteristics of the blood vessel wall and / or the Doppler frequency information generated by the flow of red blood cells inside the blood vessel. That is, the blood vessel detection information not only includes blood vessel-related detection information, but also blood flow-related detection information inside the blood vessel, thereby realizing the detection of the user's physiological parameters through blood vessel detection information. Furthermore, the feedback light returns to the semiconductor laser 11 via the conical lens 14 and the glass window 15, and undergoes feedback interference with the laser in the semiconductor laser 11, modulating the amplitude of the laser output power to generate interference light. This interference light can serve as an optical signal reflecting the user's blood vessels and / or blood-related information. The semiconductor laser 11 simultaneously emits interference light forward and backward. The forward-emitted interference light is reflected by the glass window 15 to the first detection unit 12, causing the first detection unit 12 to generate a first photoelectric signal SIG1. The backward-emitted interference light reaches the second detection unit 13, causing the second detection unit 13 to generate a second photoelectric signal SIG2. The controller acquires the first photoelectric signal SIG1 and the second photoelectric signal SIG2, and generates a detection signal based on the first photoelectric signal SIG1 and the second photoelectric signal SIG2. The controller also sends the detection signal to a remote terminal, allowing the remote terminal to generate detection values ​​of the user's physiological parameters based on the detection signal. The physiological parameters include at least one of the following: blood pressure, blood lipids, blood oxygen saturation, blood glucose, blood ketones, body temperature, respiratory rate, and heart rate.

[0027] It should be noted that in practical applications, when the semiconductor laser 11 emits laser light, it emits laser light both forward and backward. The forward-emitted laser light is split into two parts after reaching the glass window 15. One part reaches the conical lens 14 through the glass window 15 and forms a Bessel beam. The other part is reflected by the glass window 15 to the first detection unit 12 and generates a corresponding photoelectric signal. In addition, the backward-emitted laser light is directly received by the second detection unit 13 and generates a corresponding photoelectric signal.

[0028] Similarly, for the interference light generated by the laser and the feedback light, the semiconductor laser 11 also emits forward and backward simultaneously. The backward interference light is directly received by the second detection unit 13 and generates a corresponding photoelectric signal (i.e., the second photoelectric signal SIG2). The forward interference light is divided into two parts after reaching the glass window 15. One part is reflected by the glass window 15 to the first detection unit 12 and generates a corresponding photoelectric signal (the first photoelectric signal SIG1). The other part reaches the conical lens 14 through the glass window 15 and forms a Bessel beam, which continues to irradiate the user's blood vessels. The new feedback light is transmitted to the semiconductor laser 11 through the conical lens 14 and the glass window 15, and forms a new interference light with the interference light in the semiconductor laser 11. At this time, the semiconductor laser 11 emits new interference light forward and backward again and repeats the above process to continue to detect the user's blood vessels. Finally, the controller generates a detection signal based on the first photoelectric signal SIG1 and the second photoelectric signal SIG2, and sends the detection signal to the remote terminal. The remote terminal then generates the user's physiological parameter detection values ​​based on the detection signal. Thus, multiple physiological parameters such as blood pressure, blood lipids, blood oxygen saturation, blood glucose, blood ketones, body temperature, respiratory rate, and heart rate can be detected through a single physiological parameter detection device. Compared with existing methods that use different detection devices for different physiological parameters, this not only reduces detection costs but also saves the user's detection time, frees the user from certain postures, and improves the user's ability to detect physiological parameters without feeling any discomfort, thereby enhancing the user's testing comfort.

[0029] In one embodiment, the first detection unit 12 is disposed on the inner wall of the package of the semiconductor laser 11. In practical applications, the first detection unit 12 is preferably a photodiode detector, such as... Figure 1 As shown, the first detection unit 12 is fixedly mounted on the inner wall of the semiconductor laser 11 package, such as by welding it into the inner wall of the package, to facilitate the reception of laser or interference light reflected from the glass window 15. Furthermore, the height of the first detection unit 12 from the bottom of the package must meet a preset height, which is 2mm to 4mm, such as 3mm from the bottom of the package. The cathode of the first detection unit 12 is connected to the grounded outer shell of the package, thus ensuring that all reflected laser or interference light can be received by the first detection unit 12, improving the accuracy of the first photoelectric signal SIG1, and consequently improving the detection accuracy of physiological parameters. It should be noted that the bottom of the package here refers to the bottom of the package below the first detection unit 12, and the position where it connects to the glass window 15. Figure 1 The location of point A is shown.

[0030] In one embodiment, the second detection unit 13 is disposed behind the semiconductor laser 11. Preferably, the second detection unit 13 is a photodiode detector; more preferably, the second detection unit 13 is placed close to the rear of the semiconductor laser 11, and the center of the second detection unit 13 is aligned with the center of the semiconductor laser 11, i.e., the center of the second detection unit 13 is located on the central axis of the semiconductor laser 11. In some scenarios, the second detection unit 13 may also maintain a certain distance from the semiconductor laser 11, and the angle between the line connecting the center of the second detection unit 13 and the center of the semiconductor laser 11 and the central axis of the semiconductor laser 11 is less than a preset angle, to ensure that all laser light or interference light emitted rearward by the semiconductor laser 11 can be received by the second detection unit 13, thereby improving the accuracy of the second photoelectric signal SIG2.

[0031] Therefore, in the physiological parameter detection device, by simultaneously integrating the first detection unit 12 and the second detection unit 13 within the package of a conventional, inexpensive semiconductor laser 11 in a TO56 package, and integrating a conical lens 14 externally, the entire physiological parameter detection device is highly integrated, reducing its size. Compared with traditional detection devices such as external balanced detectors, this not only alleviates the problems of complex and difficult-to-integrate balanced amplification circuits of external balanced detectors, but also utilizes the principle of reflection from the tilted glass window 15 and simultaneous forward and backward laser emission from the semiconductor laser 11 to obtain high-quality interference light, achieving dual-path detection and balanced amplification noise reduction effects, thereby improving the detection accuracy of physiological parameters.

[0032] It should be noted that in the embodiments of the present invention, the first detection unit 12 and the second detection unit 13 are the same, but in some scenarios the first detection unit 12 and the second detection unit 13 may be different, and specific adjustments can be made according to the actual situation.

[0033] In one embodiment, the angle between the normal of the glass window 15 and the direction of laser motion emitted forward by the semiconductor laser 11 satisfies a preset angle. The preset angle is 9° to 11°.

[0034] Specifically, by setting a preset angle between the normal of the glass window 15 and the direction of laser motion emitted forward by the semiconductor laser 11, not only can the glass window 15 reflect part of the laser or interference light into the first detection unit 12 for measurement, but it can also make the optical axis of the Bessel beam generated by the conical lens 14 form a certain angle with the direction of blood flow in the blood vessels of the user being tested, thereby generating a Doppler frequency shift. This allows the blood vessel detection information to include the Doppler frequency information generated by the flow of red blood cells in the blood vessels, achieving simultaneous measurement of blood flow velocity and arterial pulse, thus improving the detection accuracy of physiological parameters. In particular, if the normal of the glass window 15 coincides with the laser reflection direction, the Doppler effect will not be generated, thereby reducing the detection accuracy of physiological parameters.

[0035] In one embodiment, the laser entering the conical lens 14 satisfies a specified angle with the central axis of the conical lens 14, so that the Bessel beam generated by the conical lens 14 is obliquely incident on the user's blood vessel. The optical axis of the Bessel beam and the direction of blood flow have a certain angle, thereby generating sufficient Doppler frequency shift and improving the detection accuracy of physiological parameters.

[0036] Furthermore, in this embodiment of the invention, a conical lens 14 is used. Compared with the ordinary spherical mirror used in conventional detection devices, the focal depth of the laser after convergence by the ordinary spherical mirror is short. At this time, the laser has weak penetration in human skin tissue, which reduces the detection accuracy. However, the conical lens 14 effectively increases the focal depth by generating a Bessel beam, so that the Bessel beam has good convergence and high energy density within a long distance (e.g., 12mm) in human skin tissue. This effectively improves the reflection and scattering efficiency of the laser by blood vessel walls and red blood cells, reduces the influence of differences in human skin structure, thickness, etc., or the distance from the skin to the physiological parameter detection device on the laser, thereby improving the intensity and quality of the feedback light, and thus improving the detection accuracy of physiological parameters.

[0037] In one embodiment, a certain angle is satisfied between the glass window 15 and the horizontal plane at the bottom of the enclosure. , The value needs to satisfy the following conditions: the laser emitted by the semiconductor laser 11 reaches the glass window 15, and the laser reflected by the glass window 15 can reach the first detection unit 12; simultaneously, the laser transmitted through 15 can enter the conical lens 14; and the feedback light through the conical lens 14 reaches the glass window 15, and after being projected through the glass window 15, it can reach the semiconductor laser 11. Specifically... The value can be set according to the actual situation.

[0038] In one embodiment, the device further includes a power module ( Figure 1(not shown in the diagram). The power supply module supplies power to the semiconductor laser 11, the controller, the first detection unit 12, and the second detection unit 13. Specific power supply modules can be found in existing technologies; details are not elaborated here.

[0039] Furthermore, since both the first photoelectric signal SIG1 and the second photoelectric signal SIG2 are adjusted by the laser feedback interference effect, the first photoelectric signal SIG1 and the second photoelectric signal SIG2 remain consistent but differ in phase by π. At this time, the controller utilizes the balanced amplification principle, such as... Figure 2 As shown, the first photoelectric signal SIG1 and the second photoelectric signal SIG2 are differentially divided to generate a differential signal SIG3 to eliminate common-mode noise and effectively reduce signal noise. Then, the differential signal SIG3 is amplified by the transimpedance amplifier 21 to generate a corresponding voltage signal, and the voltage signal is converted into a corresponding digital signal SIG4, i.e., the detection signal, through the analog-to-digital converter chip 22. Finally, the detection signal is sent to a remote terminal (such as a computer terminal or a mobile phone terminal) so that the remote terminal can generate the detection value of the user's physiological parameters based on the detection signal.

[0040] Since the intensity, phase, frequency, and other characteristic parameters of the detection signal SIG4 can be obtained through data processing methods such as short-time Fourier transform and Hilbert transform, such as signal peak frequency and signal time-frequency domain curve, these characteristic parameters can be used as input parameters and fed into a pre-trained computational model, such as a neural network model. During the training process of the neural network model, the relationship between the input parameter characteristics and physiological parameters such as blood pressure, blood lipids, and blood sugar is summarized. The neural network model is repeatedly trained through a large set of training data, so that the trained computational model can output the detection values ​​of the corresponding physiological parameters based on the characteristic parameters of the input detection signal. Thus, a physiological parameter detection device can be used to detect multiple physiological parameters.

[0041] In particular, in the controller described above, the transimpedance amplifier 21 is preferably a low-noise transimpedance amplifier, which can not only directly convert the differential signal SIG3 into the corresponding voltage signal, but also reduces the noise superposition of the signal chain due to its extremely low noise, thereby improving the accuracy of the detection signal and thus improving the detection accuracy of physiological parameters.

[0042] Therefore, the physiological parameter detection device provided in this embodiment of the invention, through the principle of laser feedback, can not only detect a variety of physiological parameters, but also integrate the controller, the first detection unit and the second detection unit into the package of a conventional and inexpensive semiconductor laser, reducing the size of the device; at the same time, the physiological parameter detection device can be placed on wearable devices, and there is no need to limit the user's posture during the detection process, which facilitates continuous and imperceptible physiological parameter detection in daily life, thereby not only improving the user's comfort during the detection process, but also reducing costs, and facilitating its promotion and implementation in practical applications.

[0043] Furthermore, this embodiment of the invention also provides a wearable device, including the aforementioned physiological parameter detection device. In practical applications, wearable devices include, but are not limited to, rings, watches, earphones, necklaces, and other devices, which can be specifically configured according to actual needs.

[0044] Therefore, wearable devices enable users to continuously and seamlessly monitor physiological parameters in their daily lives. For example, in hospitals, homes, and community health clinics, patients with cardiovascular diseases or others who require monitoring of their cardiovascular health can continuously monitor physiological parameters such as blood pressure for 24 hours by wearing the device for extended periods. The monitoring process requires no restrictions on user posture; simply wearing the device is sufficient, simplifying operation and improving user comfort. Furthermore, the physiological parameter detection device employs laser self-mixing interferometry technology to precisely measure the expansion and contraction of blood vessels caused by the pulse, achieving micron-level accuracy. An integrated structure combined with Bessel beam shaping further enhances laser penetration depth, improving detection accuracy and signal quality. Simultaneously, the balanced amplification principle reduces signal noise. This not only improves the accuracy of physiological parameter detection but also encapsulates the device within a conventional and inexpensive package, such as a standard TO56 laser, reducing costs and demonstrating significant practical value, facilitating widespread implementation in real-world applications.

[0045] The wearable device provided in this embodiment of the invention has the same technical features as the physiological parameter detection device provided in the above embodiment, so it can also solve the same technical problems and achieve the same technical effects.

[0046] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the system and apparatus described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0047] Furthermore, in the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0048] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a processor-executable, non-volatile, computer-readable storage medium. Based on this understanding, the technical solution of this invention, essentially, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0049] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] Finally, it should be noted that the above-described embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A physiological parameter detection device, characterized in that, The device includes: a semiconductor laser, a controller, a first detection unit, a second detection unit, and a conical lens; wherein, the controller, the first detection unit, and the second detection unit are all integrated inside the package of the semiconductor laser, and a glass window is provided at the package outlet, the glass window and the horizontal plane at the bottom of the package satisfy a certain angle, and the conical lens is fixed on the side of the glass window away from the package; The laser emitted forward by the semiconductor laser enters the conical lens through the glass window and generates a Bessel beam in the conical lens. The Bessel beam illuminates the user's blood vessel and is reflected by the blood vessel and its internal blood cells to generate feedback light. The feedback light carries blood vessel detection information, which includes information on the expansion and contraction characteristics of the blood vessel wall and / or Doppler frequency information generated by the flow of red blood cells in the blood vessel. The feedback light returns to the semiconductor laser via the conical lens and the glass window, and undergoes feedback interference with the laser light in the semiconductor laser to generate interference light. The semiconductor laser simultaneously emits the interference light forward and backward. The interference light emitted forward is reflected by the glass window to the first detection unit, causing the first detection unit to generate a first photoelectric signal. The interference light emitted backward reaches the second detection unit, causing the second detection unit to generate a second photoelectric signal. The controller is configured to acquire the first photoelectric signal and the second photoelectric signal, and generate a detection signal based on the first photoelectric signal and the second photoelectric signal; and to send the detection signal to a remote terminal so that the remote terminal generates detection values ​​of the user's physiological parameters based on the detection signal; wherein the physiological parameters include at least one of the following: blood pressure, blood lipids, blood oxygen saturation, blood glucose, blood ketones, body temperature, respiratory rate, and heart rate.

2. The physiological parameter detection device according to claim 1, characterized in that, The first detection unit is disposed on the inner wall of the semiconductor laser package.

3. The physiological parameter detection device according to claim 2, characterized in that, The height of the first detection unit from the bottom of the package meets the preset height.

4. The physiological parameter detection device according to claim 3, characterized in that, The preset height is 2mm~4mm.

5. The physiological parameter detection device according to claim 1, characterized in that, The second detection unit is located behind the semiconductor laser.

6. The physiological parameter detection device according to claim 1, characterized in that, The angle between the normal of the glass window and the direction of the laser motion emitted forward by the semiconductor laser satisfies a preset angle.

7. The physiological parameter detection device according to claim 6, characterized in that, The preset angle is 9°~11°.

8. The physiological parameter detection device according to claim 1, characterized in that, The laser entering the conical lens satisfies a specified angle with the central axis of the conical lens.

9. The physiological parameter detection device according to claim 1, characterized in that, The device further includes a power supply module; wherein the power supply module is used to supply power to the semiconductor laser, the controller, the first detection unit and the second detection unit.

10. A wearable device, characterized in that, The physiological parameter detection device includes any one of claims 1-9.

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