Physiological parameter detection device and wearable device

Abstract

The invention provides a physiological parameter detection device and a wearable device. In the physiological parameter detection device, not only can detection of various physiological parameters be realized, but also the controller, the first detection unit and the second detection unit are integrated in a package of a conventional and cheap semiconductor laser, so that the size of the device is reduced; meanwhile, the physiological parameter detection device can be arranged on a wearable device, the posture of the user does not need to be limited in the detection process, continuous and non-inductive physiological parameter detection can be conveniently achieved in daily life, the comfort degree of the user in the detection process is improved, cost is reduced, and popularization and implementation in practical application are facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of physiological parameter detection, and in particular to a physiological parameter detection device and a wearable device. BACKGROUND

[0002] With the continuous improvement of living standards, people pay more and more attention to their own health status. Regular health examination can help people understand their own health status and early diagnosis of some diseases. Conventional health examination requires people to go to the hospital for specific examination items, or use some household simple health detection equipment to measure specific physiological indicators. For different physiological parameters, different detection equipment is often used, which not only increases the detection cost, but also is time-consuming and laborious, and brings great inconvenience to the user. For example, when detecting blood pressure, the detection equipment uses a cuff method to measure indirectly. At this time, not only the user's blood vessels will be compressed, but also the user's posture will be required to be high, such as maintaining the same posture for more than 20 seconds, thereby bringing great inconvenience to the user. Therefore, how to detect the physiological parameters of the user on the basis of ensuring the comfort of the user is a problem to be solved. SUMMARY

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

[0004] In a first aspect, an embodiment of the present application provides a physiological parameter detection device, which comprises a semiconductor laser, a controller, a first detection unit, a second detection unit and a conic lens; wherein the controller, the first detection unit and the second detection unit are integrated inside a package of the semiconductor laser, and a glass window is arranged at an outlet of the package, the glass window and a horizontal plane of a bottom of the package satisfy a certain angle, and the glass window is fixed with the conic lens on a side away from the package; the laser emitted forward by the semiconductor laser enters the conic lens through the glass window, and a Bessel beam is generated in the conic lens, the Bessel beam irradiates to a blood vessel of a user, and feedback light is generated by reflection of the blood vessel and blood cells inside the blood vessel; wherein the feedback light carries blood vessel detection information, the blood vessel detection information comprises inflation and contraction characteristic information of a blood vessel wall and / or Doppler frequency information generated by blood red cell flow in the blood vessel; the feedback light returns to the semiconductor laser through the conic lens and the glass window, and a feedback interference effect occurs between the feedback light and the laser in the semiconductor laser to generate interference light; the semiconductor laser emits the interference light forward and backward at the same time, the interference light emitted forward is reflected to the first detection unit through the glass window, so that the first detection unit generates a first photoelectric signal; the interference light emitted backward is to the second detection unit, so that the second detection unit generates a second photoelectric signal; the controller is used for acquiring the first photoelectric signal and the second photoelectric signal, and generating a detection signal according to the first photoelectric signal and the second photoelectric signal; and sending the detection signal to a remote terminal, so that the remote terminal generates a detection value of a physiological parameter of the user according to the detection signal; wherein the physiological parameter comprises at least one of the following: blood pressure, blood fat, blood oxygen saturation, blood sugar, blood ketone, body temperature, respiratory rate and heart rate.

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

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

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

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

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

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

[0011] Optionally, the laser entering the conic lens and a central axis of the conic lens satisfy a specified angle.

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

[0013] In a second aspect, the embodiments of the present application further provide a wearable device comprising the physiological parameter detection apparatus of the first aspect.

[0014] The embodiments of the present application have the following beneficial effects: The embodiments of the present application provide a physiological parameter detection apparatus and a wearable device; in the physiological parameter detection apparatus, the laser emitted forward by the semiconductor laser enters the conic lens through the glass window, and a Bessel beam is generated in the conic lens, the Bessel beam irradiates to the blood vessel of the user, and the feedback light is generated by reflection through the blood vessel; the feedback light enters the semiconductor laser through the conic lens and the glass window, and the feedback interference effect is generated with the laser in the semiconductor laser, and the interference light is generated; the semiconductor laser emits the interference light forward and backward at the same time, the interference light emitted forward is reflected to the first detection unit through the glass window, so that the first detection unit generates the first photoelectric signal; the interference light emitted backward is to the second detection unit, so that the second detection unit generates the second photoelectric signal; the controller generates the detection signal according to the first photoelectric signal and the second photoelectric signal; and the detection signal is sent to the remote terminal, so that the remote terminal generates the detection value of the physiological parameter of the user according to the detection signal. Therefore, the above-mentioned physiological parameter detection apparatus can not only realize the detection of multiple physiological parameters, but also integrates the controller, the first detection unit and the second detection unit in the packaging of the conventional and inexpensive semiconductor laser, thereby reducing the size of the apparatus; at the same time, the physiological parameter detection apparatus can be arranged on the wearable device, and the user's posture does not need to be limited during the detection process, which is convenient for realizing continuous and unconscious physiological parameter detection in daily life, thereby not only improving the comfort of the user during the detection process, but also reducing the cost, and facilitating the popularization and implementation in practical application.

[0015] Other features and advantages of the present application will be set forth in the descriptions below, and in part will become apparent to those skilled in the art upon examination of the following or can be learned by practice of the present application. The objects and other advantages of the present application can be realized and attained by the structure particularly pointed out in the description and the drawings.

[0016] In order to make the above-mentioned objects, characteristics and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0018] Figure 1This is a schematic diagram of a physiological parameter detection device provided in an embodiment of the present invention; Figure 2 This is a balanced amplifier circuit diagram provided for an embodiment of the present invention.

[0019] icon: 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

[0020] 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.

[0021] To facilitate understanding of this embodiment, the embodiments of the present invention will be described in detail below.

[0022] 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.

[0023] 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 feedback light carries the blood vessel detection information, which includes the detection information of the blood vessel wall, the detection information of the blood cells in the blood vessel, and the like, such as the expansion and contraction characteristic information of the blood vessel wall and / or the Doppler frequency information generated by the flowing of the red blood cells in the blood vessel, i.e., the blood vessel detection information not only includes the detection information related to the blood vessel, but also includes the detection information related to the blood flow in the blood vessel, so as to realize the physiological parameter detection of the user through the blood vessel detection information. In addition, the feedback light returns to the semiconductor laser 11 through the tapered lens 14 and the glass window 15, and generates a feedback interference effect with the laser in the semiconductor laser 11, so that the amplitude of the laser output light power is modulated to generate interference light, and the interference light can reflect the information related to the blood vessel and / or the blood of the user as an optical signal; the semiconductor laser 11 emits the interference light forward and backward at the same time, the interference light emitted forward is reflected to the first detection unit 12 through the glass window 15, so that the first detection unit 12 generates a first photoelectric signal SIG1; the interference light emitted backward is to the second detection unit 13, so that the second detection unit 13 generates a second photoelectric signal SIG2; the controller is used for acquiring the first photoelectric signal SIG1 and the second photoelectric signal SIG2, and generating a detection signal according to the first photoelectric signal SIG1 and the second photoelectric signal SIG2; and sending the detection signal to the remote terminal, so that the remote terminal generates a detection value of the physiological parameter of the user according to the detection signal; wherein the physiological parameter includes at least one of the following: blood pressure, blood fat, blood oxygen saturation, blood sugar, blood ketone, body temperature, respiratory rate and heart rate.

[0024] It should be noted that in actual application, the semiconductor laser 11 emits laser forward and backward at the same time when emitting laser, the laser emitted forward is divided into two parts after reaching the glass window 15, one part reaches the tapered lens 14 through the glass window 15 and forms a Bessel beam; the other part is reflected to the first detection unit 12 through the glass window 15 and generates a corresponding photoelectric signal, in addition, the laser emitted backward is directly received by the second detection unit 13 and generates a corresponding photoelectric signal.

[0025] Similarly, for the interference light generated by the laser and the feedback light, the semiconductor laser 11 also emits forward and backward at the same time, the backward interference light is directly received by the second detection unit 13, and the corresponding photoelectric signal (i.e. the second photoelectric signal SIG2) is generated; the forward interference light is divided into two parts after reaching the glass window 15, one part is reflected to the first detection unit 12 through the glass window 15, and the corresponding photoelectric signal (the first photoelectric signal SIG1) is generated, and the other part reaches the cone lens 14 through the glass window 15, and forms a Bessel beam, continues to irradiate to the user's blood vessels, and the new feedback light is transmitted to the semiconductor laser 11 through the cone lens 14 and the glass window 15, and forms new interference light with the interference light in the semiconductor laser 11; at this time, the semiconductor laser 11 re-emits new interference light forward and backward, and repeats the above process to continue detecting the user's blood vessels. Finally, the controller generates a detection signal according to the first photoelectric signal SIG1 and the second photoelectric signal SIG2, and sends the detection signal to the remote terminal, so that the remote terminal generates the detection value of the user's physiological parameter according to the detection signal, so that through a single physiological parameter detection device, the detection of multiple physiological parameters such as blood pressure, blood lipid, blood oxygen saturation, blood glucose, blood ketone, body temperature, respiratory rate and heart rate of the user can be realized. Compared with the existing different physiological parameters using different detection devices, not only the detection cost is reduced, but also the user's detection time is saved, the user's detection posture is liberated, the user's physiological parameter detection is improved, and the user's detection comfort is improved.

[0026] In an embodiment, the first detection unit 12 is arranged on the inner wall of the package of the semiconductor laser 11. In actual application, the first detection unit 12 is preferably a photodiode detector, as shown in Figure 1 The first detection unit 12 is fixedly arranged on the inner wall of the package of the semiconductor laser 11, such as being welded and integrated on the inner wall of the package, so as to facilitate receiving the reflected laser or interference light of the glass window 15. In addition, the height of the first detection unit 12 from the bottom of the package also needs to meet the preset height, which is 2mm~4mm, such as 3mm from the bottom of the package, and the cathode of the first detection unit 12 is connected to the ground of the package shell, so as to ensure that the reflected laser or interference light can be fully received by the first detection unit 12, improve the accuracy of the first photoelectric signal SIG1, and further improve the detection accuracy of the physiological parameter. It should be noted that here the bottom of the package refers to the bottom of the package below the first detection unit 12, and the position connected with the glass window 15, such as the position of point A shown in Figure 1 .

[0027] In an embodiment, the second detection unit 13 is arranged behind the semiconductor laser 11. The second detection unit 13 is preferably a photodiode detector. The second detection unit 13 is preferably arranged closely behind 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 on the central axis of the semiconductor laser 11. In some scenarios, the second detection unit 13 can also be arranged at a 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, so that the laser or interference light emitted backward by the semiconductor laser 11 can be fully received by the second detection unit 13, thereby improving the accuracy of the second photoelectric signal SIG2.

[0028] Therefore, in the physiological parameter detection device, the first detection unit 12 and the second detection unit 13 are integrated in the package of the conventional and inexpensive semiconductor laser 11 such as a TO56 package, and the conical lens 14 is integrated outside the package, so that the entire physiological parameter detection device is highly integrated and compact. Compared with the traditional detection device such as an external balance detector, the balance amplification circuit of the external balance detector is complex and difficult to integrate, and the tilted glass window 15 reflects the laser emitted forward and backward by the semiconductor laser 11 at the same time, so that high-quality interference light is obtained, the effects of double-path detection and balance amplification noise reduction are achieved, and the detection accuracy of the physiological parameter is improved.

[0029] It should be noted that in the embodiments of the present application, the first detection unit 12 and the second detection unit 13 are the same, and in some scenarios, the first detection unit 12 and the second detection unit 13 can also be different, and the specific adjustment can be made according to the actual situation.

[0030] In an embodiment, the angle between the normal line of the glass window 15 and the direction of the laser emitted forward by the semiconductor laser 11 satisfies a preset angle. The preset angle is 9°-11°.

[0031] Specifically, by setting the included angle between the normal line of the glass window 15 and the direction of the laser emitted by the semiconductor laser 11 to a preset angle, not only can the glass window 15 reflect part of the laser or interference light to the first detection unit 12 to achieve measurement, but also the optical axis of the Bessel beam generated by the conical lens 14 can be at a certain angle with the flow direction of the blood in the blood vessel of the user to be detected, thereby generating a Doppler frequency shift, so that the blood vessel detection information contains the Doppler frequency information generated by the flow of red blood cells in the blood vessel, realizing the synchronous measurement of the blood flow rate and the arterial pulse, and further improving the detection accuracy of the physiological parameters. In particular, if the normal line of the glass window 15 coincides with the direction of the laser reflection, the Doppler effect cannot be generated, thereby reducing the detection accuracy of the physiological parameters.

[0032] In an embodiment, the laser entering the conical lens 14 and the central axis of the conical lens 14 satisfy a specified angle, so that the Bessel beam generated by the conical lens 14 is obliquely incident on the user's blood vessel, and the optical axis of the Bessel beam and the flow direction of the blood have a certain angle, thereby generating sufficient Doppler frequency shift and improving the detection accuracy of the physiological parameters.

[0033] In addition, in the embodiment of the present application, the conical lens 14 is used, compared with the general spherical mirror used in the conventional detection device, the focal depth of the laser converged by the general spherical mirror is short, at this time the penetration of the laser in the human skin tissue is weak, which reduces the detection accuracy; while the conical lens 14 generates a Bessel beam, effectively increases the focal depth, so that the Bessel beam has good convergence and high energy density in a long distance (such as 12mm) in the human skin tissue, effectively improves the reflection efficiency and scattering efficiency of the blood vessel wall and the red blood cells to the laser, reduces the influence of the differences of the human skin structure, thickness and the like 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 further improving the detection accuracy of the physiological parameters.

[0034] In an embodiment, the glass window 15 and the horizontal plane of the packaging bottom satisfy a certain included angle , The value needs to satisfy that 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, and the laser transmitted by the glass window 15 can enter the conical lens 14; and the feedback light passing through the conical lens 14 can reach the semiconductor laser 11 after being projected by the glass window 15, and the specific The value can be set according to the actual situation.

[0035] In an embodiment, the device further comprises a power module ( Figure 1The power module is used for supplying power to the semiconductor laser 11, the controller, the first detection unit 12 and the second detection unit 13. The specific power module can refer to the prior art, and the embodiment of the present application will not be described in detail here.

[0036] Further, since the first photoelectric signal SIG1 and the second photoelectric signal SIG2 are both 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, as shown in Figure 2 First, the first photoelectric signal SIG1 and the second photoelectric signal SIG2 are differentiated to generate a differential signal SIG3 to eliminate common-mode noise and effectively reduce signal noise; then the differential signal SIG3 is amplified by a transimpedance amplifier 21 to generate a corresponding voltage signal, and the voltage signal is converted into a corresponding digital signal SIG4, i.e. a detection signal, by an analog-to-digital conversion chip 22; and the detection signal is sent to a remote terminal (such as a computer terminal or a mobile terminal, etc.) to enable the remote terminal to generate a detection value of the user's physiological parameter according to the detection signal.

[0037] Since the strength, phase, frequency and other characteristic parameters of the detection signal SIG4 can be obtained by short-time Fourier transform and Hilbert transform, etc. data processing methods, such as signal peak frequency, signal time-frequency domain curve, etc., these characteristic parameters are input as input parameters into a pre-trained calculation model such as a neural network model, etc. In the neural network model training process, the relationship between the input parameter characteristics and the physiological parameters such as blood pressure, blood fat, blood sugar, etc. is summarized respectively, and the neural network model is repeatedly trained by a large number of training data sets, so that the trained calculation model can output the detection value of the corresponding physiological parameter according to the characteristic parameters of the input detection signal, so that the physiological parameter detection device can realize the detection of multiple physiological parameters.

[0038] In particular, in the above controller, the transimpedance amplifier 21 is preferably a low-noise transimpedance amplifier, which can not only directly convert the differential signal SIG3 into a corresponding voltage signal, but also reduce the noise superposition of the signal chain due to its extremely low noise, thereby improving the precision of the detection signal and further improving the detection precision of the physiological parameter.

[0039] Therefore, the physiological parameter detection device provided by the embodiment of the present application can realize detection of multiple physiological parameters through the laser feedback principle, and the controller, the first detection unit and the second detection unit are integrated in the package of a conventional and inexpensive semiconductor laser, so that the size of the device is reduced; meanwhile, the physiological parameter detection device can be arranged on a wearable device, and the user posture does not need to be limited during the detection process, so that continuous and unobtrusive physiological parameter detection can be realized in daily life, thereby improving the comfort of the user during the detection process, reducing the cost, and facilitating popularization and implementation in actual application.

[0040] Further, the embodiment of the present application further provides a wearable device comprising the physiological parameter detection device. In actual application, the wearable device includes but is not limited to a ring, a watch, an earphone, a necklace and the like, and can be set according to actual conditions.

[0041] Therefore, the user can realize continuous and unobtrusive physiological parameter detection in daily life through the wearable device. For example, for hospital, family, community health clinic and the like, patients with cardiovascular and cerebrovascular diseases or other people who need to keep cardiovascular and cerebrovascular health can realize 24-hour continuous detection of physiological parameters such as blood pressure by wearing the wearable device for a long time, and the user posture does not need to be limited during the detection process, only the wearable device needs to be worn, and the operation is simple, thereby improving the comfort of the user. During the detection process, the physiological parameter detection device uses the laser self-mixing interference technology to measure the blood vessel expansion and contraction caused by the pulse with high precision, the precision reaches the micron level, and the integrated structure is combined with the Bessel beam shaping to improve the laser penetration depth, improve the detection precision and signal quality, and the balanced amplification principle is used to reduce the signal noise, thereby improving the detection precision of the physiological parameter, packaging in a conventional and inexpensive package such as a common TO56 laser package, reducing the cost, having good practical value, and facilitating popularization and implementation in actual application.

[0042] The wearable device provided by the embodiment of the present application has the same technical features as the physiological parameter detection device provided by the above-described embodiment, so it can also solve the same technical problems and achieve the same technical effects.

[0043] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system and device described above can refer to the corresponding process in the foregoing method embodiment, which will not be described here.

[0044] In addition, in the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be direct connection, can also be indirect connection through intervening medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] If the functions are realized in the form of software function units and sold or used as independent products, they can be stored in a nonvolatile computer readable storage medium executable by a processor. Based on this understanding, the technical solutions of the present application or the part of the prior art or the part of the technical solutions can be embodied in the form of software products. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and various program code storage media.

[0046] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0047] Finally, it should be noted that the above-described embodiments are merely specific embodiments of the present application, which are used to illustrate the technical solutions of the present application, but not to limit the same. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that any person skilled in the art can still modify or easily think of changes to the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some of the technical features, within the technical scope disclosed by the present application. The modifications, changes or replacements do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection 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.

Images