Optical heart rate sensor test device for smartwatches

Abstract

The application discloses an optical heart rate sensor testing device of a smart watch, which comprises a main support, a pressing mechanism arranged on one side of the main support, a blood vessel simulation mechanism arranged at the bottom end of the pressing mechanism, an obstacle simulation mechanism arranged at the bottom end of the blood vessel simulation mechanism, a bottom plate connected to the bottom end of the main support, a control panel connected to one side of the bottom plate, a limiting mechanism arranged at the top end of the bottom plate, an optical heart rate sensor clamped on the inner wall of the limiting mechanism, the optical heart rate sensor comprising a light emitter and a detector, the blood vessel simulation mechanism comprising a liquid storage tank and a supporting shell, the top end of the liquid storage tank and the supporting shell being connected with a connecting frame at the same time, and a liquid passing hose arranged in the liquid storage tank, the optical heart rate sensor testing device of the smart watch has the effect that the optical heart rate sensor can be tested quickly and intuitively, and the testing efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of optical heart rate sensor testing technology, and more particularly to an optical heart rate sensor testing device for a smartwatch. Background Technology

[0002] With the fast pace of life and increasing work pressure, more and more people are focusing on fitness, making wearable fitness tracking devices very popular. If you observe closely, you'll find many friends around you already using these devices, whether for fitness or weight loss. These devices record fitness data, allowing users to easily track their progress. Users can continuously monitor their activity levels.

[0003] Among them, optical heart rate sensors are being used more and more frequently. They measure pulse and monitor heart rate by illuminating light and are mostly used in smartwatches to enable real-time monitoring of heart rate.

[0004] In the production process of optical heart rate sensors, after production, they need to be tested to ensure they are qualified and ready for distribution. The most common testing method is to first check if the detector circuitry is properly connected, and then conduct a trial test by wearing the device. However, because the human heart rate is not completely stable, the monitored values ​​are not highly accurate, making it difficult to visually determine whether the sensor is qualified, and the testing efficiency is low. Summary of the Invention

[0005] This invention discloses an optical heart rate sensor testing device for smartwatches, aiming to solve the technical problems that during the testing process, the human heart rate is not completely stable, the monitored values ​​are not highly accurate, the pass / fail status cannot be intuitively seen, and the testing efficiency is low.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An optical heart rate sensor testing device for a smartwatch includes a main support. A pressing mechanism is located on one side of the main support. A vascular simulation mechanism is located at the bottom of the pressing mechanism, and an obstacle simulation mechanism is located at the bottom of the vascular simulation mechanism. A base plate is connected to the bottom of the main support. A control panel is connected to one side of the base plate, and a limiting mechanism is located at the top of the base plate. An optical heart rate sensor, including a light emitter and a detector, is engaged with the inner wall of the limiting mechanism. The vascular simulation mechanism includes a reservoir and a supporting shell. A connecting frame is connected to the top of both the reservoir and the supporting shell. A fluid-passing hose is located inside the reservoir, with most of the hose positioned inside the supporting shell. Multiple limiting frames are located on the outer wall of the fluid-passing hose, and the hose is fixed to the inner wall of the supporting shell by these frames. A pressing pad is located at the bottom of the supporting shell. A centrifugal pump is connected to one end of the fluid-passing hose. A time relay is located on one outer wall of the reservoir and connected to the centrifugal pump.

[0008] By incorporating a vascular simulation mechanism, when testing an optical heart rate sensor, the mechanism is pressed down, causing a pressure pad to press against the light emitter and detector. A centrifugal pump is controlled to simulate the heart pumping blood, drawing red liquid from the reservoir and simulating blood flow through a tubing. Once the pressure pad is fully depressed, the light emitter and detector detect the flow rate within the tubing and display the heart rate index. The sensor's quality is determined by comparing the data with the device's preset values. Because simulating blood pumping via a centrifugal pump provides more stable data compared to human heart rate monitoring, it allows for rapid and intuitive testing of the optical heart rate sensor, improving testing efficiency. Furthermore, a time relay can stop the centrifugal pump within a certain timeframe, allowing for monitoring of the optical heart rate sensor's alarm system and ensuring diverse data output.

[0009] In a preferred embodiment, side support shells are connected to both sides of the supporting shell. The obstacle simulation mechanism is disposed inside the side support shells. The obstacle simulation mechanism includes two double-ended lead screws, and bearing seats are respectively provided at both ends of the double-ended lead screws. The bearing seats are fixed to the inner wall of the side support shells. Two lead screw nuts are respectively engaged with the outer walls of the two double-ended lead screws. A baffle is connected to the inner wall of one side of the lead screw nut. Synchronous rollers are respectively connected to the outer walls of the two double-ended lead screws on the same side. Synchronous belts are simultaneously connected to the outer walls of the two synchronous rollers. One end of one of the double-ended lead screws is fixedly connected to a stepper motor, and the stepper motor is disposed on one side of the side support shell.

[0010] By setting up an obstacle simulation mechanism, after the optical heart rate sensor has been tested normally, the stepper motor is started to drive one of the double-ended lead screws to rotate. Under the action of the synchronous pulley and synchronous belt, both double-ended lead screws rotate simultaneously. Correspondingly, the two sets of lead screw nuts drive the baffle to move inward and block the bottom of the fluid-conducting hose, simulating the obstruction of human bones and tendons. The system observes whether the optical heart rate sensor can operate normally when obstructed, making the simulation more realistic and further enhancing the diversity of the experiment.

[0011] In a preferred embodiment, the pressing mechanism includes an inner rod, an outer sleeve movably sleeved on the outer wall of the inner rod, a spring connected to the top end of the outer sleeve, and one end of the spring and one end of the inner rod simultaneously fixed to the top inner wall of the main support. The connecting frame is fixed to the bottom end of the outer sleeve.

[0012] With a pressing mechanism, when the pressing mechanism is used, the outer sleeve is lowered by manually pressing down the lever. At the same time, the spring deforms, and the inner sleeve remains on the inner wall of the outer sleeve and is limited to fit against the inner wall of the outer sleeve. Compared with automatic pressing, this method makes it easier to control the pressing force and is also convenient to adjust according to individual work speed, making it more adaptable.

[0013] In a preferred embodiment, the limiting mechanism includes two L-shaped limiting frames, one of which is fixed to the bottom outer wall of the base plate, and the other L-shaped limiting frame has a rod fixedly connected to its bottom outer wall, with a locking block at the bottom end of the rod. A limiting plate is provided on the inner wall of one of the L-shaped limiting frames. Multiple limiting holes are evenly spaced on the bottom inner wall of the base plate, with the inner walls of the holes fitting against the outer walls of the rod and the locking block. A limiting groove is provided on the bottom inner wall of each limiting hole, with the inner diameter of the limiting groove being larger than the inner diameter of the limiting hole.

[0014] By setting a limiting mechanism, when fixing the optical heart rate sensor, first make one side of it fit against the inner wall of the L-shaped limiting bracket fixed on the base plate, then take out another L-shaped limiting bracket, find a suitable limiting hole, insert the plug rod and rotate to fix it, so that the limiting plate covers the top surface of the optical heart rate sensor for limiting, which can effectively prevent the optical heart rate sensor from falling off and being damaged after the test due to its adhesion to the pressing pad. At the same time, by setting multiple limiting holes, it can be used to fix optical heart rate sensors of different specifications.

[0015] As described above, an optical heart rate sensor testing device for a smartwatch includes a main support. A pressing mechanism is provided on one side of the main support, a vascular simulation mechanism is provided at the bottom of the pressing mechanism, and an obstacle simulation mechanism is provided at the bottom of the vascular simulation mechanism. A base plate is connected to the bottom of the main support, a control panel is connected to one side of the base plate, and a limiting mechanism is provided at the top of the base plate. An optical heart rate sensor is snapped into the inner wall of the limiting mechanism. The optical heart rate sensor includes a light emitter and a detector. The vascular simulation mechanism includes a liquid storage tank and a supporting shell. A connecting frame is connected to the top of both the liquid storage tank and the supporting shell. A fluid-passing hose is provided inside the liquid storage tank, and most of the fluid-passing hose is located inside the supporting shell. Multiple limiting frames are provided on the outer wall of the fluid-passing hose, and the fluid-passing hose is fixed to the inner wall of the supporting shell by the multiple limiting frames. A pressing pad is provided at the bottom of the supporting shell. A centrifugal pump is connected to one end of the fluid-passing hose. A time relay is provided on one outer wall of the liquid storage tank, and the time relay is connected to the centrifugal pump. The optical heart rate sensor testing device for smartwatches provided by this invention has the technical effect of enabling rapid and intuitive testing of optical heart rate sensors, thereby improving testing efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an optical heart rate sensor testing device for a smartwatch proposed in this invention.

[0017] Figure 2 This is a schematic diagram showing the disassembled structure of the pressing mechanism of an optical heart rate sensor testing device for a smartwatch, as proposed in this invention.

[0018] Figure 3 This is a schematic diagram of the disassembled structure of the vascular simulation mechanism of the optical heart rate sensor testing device for a smartwatch proposed in this invention.

[0019] Figure 4 This is a schematic diagram of the obstacle simulation mechanism of an optical heart rate sensor testing device for a smartwatch, as proposed in this invention.

[0020] Figure 5 This is a schematic diagram of the disassembled structure of the limiting mechanism of the optical heart rate sensor testing device for a smartwatch proposed in this invention.

[0021] In the diagram: 1. Vascular simulation mechanism; 2. Obstacle simulation mechanism; 3. Pressing mechanism; 4. Main support; 5. Control panel; 6. Base plate; 7. Limiting mechanism; 8. Optical heart rate sensor; 9. Slot; 10. Limiting hole; 11. Connecting frame; 12. Outer sleeve; 13. Snap plate; 14. Paddle; 15. Spring; 16. Inner rod; 17. Time relay; 18. Liquid storage tank; 19. Centrifugal pump; 20. Fluid inlet hose; 21. Limiting frame; 22. Side support shell; 23. Support shell; 24. Pressing pad; 25. Double-ended lead screw; 26. Lead screw nut; 28. Synchronous roller; 29. ​​Synchronous belt; 30. Baffle; 31. Bearing seat; 32. Stepper motor; 33. L-shaped limiting frame; 34. Limiting plate; 35. Insert rod; 36. Locking block; 37. Limiting circular groove. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0023] The optical heart rate sensor testing device for smartwatches disclosed in this invention is mainly used in scenarios involving optical heart rate sensor testing.

[0024] Reference Figure 1 , Figure 3 and Figure 4An optical heart rate sensor testing device for a smartwatch includes a main support 4, a pressing mechanism 3 on one side of the main support 4, a vascular simulation mechanism 1 at the bottom of the pressing mechanism 3, an obstacle simulation mechanism 2 at the bottom of the vascular simulation mechanism 1, a base plate 6 connected to the bottom of the main support 4, a control panel 5 connected to one side of the base plate 6, and a limit mechanism 7 at the top of the base plate 6. An optical heart rate sensor 8 is engaged with the inner wall of the limit mechanism 7. The optical heart rate sensor 8 includes a light emitter and a detector. The vascular simulation mechanism 1 includes a reservoir 1. The liquid storage tank 18 and the supporting shell 23 are connected to the top of the supporting shell 23 by a connecting bracket 11. The liquid storage tank 18 is equipped with a liquid-conducting hose 20, and most of the liquid-conducting hose 20 is located inside the supporting shell 23. The outer wall of the liquid-conducting hose 20 is equipped with multiple limiting brackets 21, and the liquid-conducting hose 20 is fixed to the inner wall of the supporting shell 23 by the multiple limiting brackets 21. The bottom end of the supporting shell 23 is equipped with a pressing pad 24. One end of the liquid-conducting hose 20 is connected to a centrifugal pump 19. A time relay is provided on one side of the outer wall of the liquid storage tank 18. The device 17, time relay 17, and centrifugal pump 19 are connected. When testing the optical heart rate sensor 8, the optical heart rate sensor 8 is first fixed on the base plate 6 by the limiting mechanism 7. Then, the vascular simulation mechanism 1 is pressed down by the pressing mechanism 3, so that the pressing pad 24 presses on the light emitter and detector. By controlling the centrifugal pump 19, the centrifugal pump 19 simulates the heart pumping blood, drawing out the red liquid in the reservoir 18 and simulating the blood flow state through the fluid inlet hose 20. When the pressing pad 24 is pressed in place, the light emitter and detector identify the flow rate in the fluid inlet hose 20 and display the heart rate index. The optical heart rate sensor 8 is qualified by observing whether the data is consistent with the set data of the device. Since the blood pumping state simulated by the centrifugal pump 19 has data stability compared with human heart rate detection, the optical heart rate sensor 8 can be tested quickly and intuitively, improving the testing efficiency. At the same time, the time relay can stop the centrifugal pump 19 within a certain period of time to detect whether the alarm system of the optical heart rate sensor 8 is normal, so as to realize the diversity of detection data.

[0025] Reference Figure 3 and Figure 4 In a preferred embodiment, the two sides of the supporting housing 23 are connected to the side supporting housing 22, and the obstacle simulation mechanism 2 is disposed inside the side supporting housing 22. The obstacle simulation mechanism 2 includes two double-ended lead screws 25, and the two ends of the double-ended lead screws 25 are respectively provided with bearing seats 31, which are fixed to the inner wall of the side supporting housing 22.

[0026] Reference Figure 4In a preferred embodiment, the outer walls of the two double-ended lead screws 25 are respectively engaged with two lead screw nuts 26, and a baffle 30 is connected to one side of the inner wall of the lead screw nut 26. The outer walls of the two double-ended lead screws 25 on the same side are respectively connected with synchronous rollers 28.

[0027] Reference Figure 4 In a preferred embodiment, the outer walls of the two synchronous rollers 28 are simultaneously connected to synchronous belts 29. One end of a double-ended lead screw 25 is fixedly connected to a stepper motor 32, and the stepper motor 32 is located on one side of the side support housing 22. After the optical heart rate sensor 8 is tested normally, the stepper motor 32 is started to drive one of the double-ended lead screws 25 to rotate. Under the action of the synchronous rollers 28 and the synchronous belt 29, both double-ended lead screws 25 rotate simultaneously. Correspondingly, the two sets of lead screw nuts 26 drive the baffle 30 to move inward and block the bottom of the fluid-conducting hose 20, simulating the obstruction of human bones and tendons. The system observes whether the optical heart rate sensor 8 can operate normally when obstructed, making the simulation more realistic and further enhancing the diversity of the experiment.

[0028] Reference Figure 2 In a preferred embodiment, the pressing mechanism 3 includes an inner rod 16, an outer sleeve 12 is movably sleeved on the outer wall of the inner rod 16, a spring 15 is connected to the top end of the outer sleeve 12, and one end of the spring 15 and one end of the inner rod 16 are simultaneously fixed to the top inner wall of the main support 4, and the connecting frame 11 is fixed to the bottom end of the outer sleeve 12.

[0029] Reference Figure 2 In a preferred embodiment, a snap-fit ​​plate 13 is connected to one outer wall of the outer sleeve 12, and a lever 14 is connected to one outer wall of the snap-fit ​​plate 13. A slot 9 is provided on one inner wall of the main bracket 4, and the snap-fit ​​plate 13 is movably snapped into the slot 9. When the pressing mechanism is used to press down, the outer sleeve 12 is driven to descend by manually pressing down the lever 14. At the same time, the spring 15 deforms, and the inner sleeve 16 remains located on the inner wall of the outer sleeve 12 and fits against the inner wall of the outer sleeve 12 for limiting. Compared with automatic pressing, this method is easier to control the pressing force and is also easier to adjust according to individual working speed, and has higher adaptability.

[0030] Reference Figure 5 In a preferred embodiment, the limiting mechanism 7 includes two L-shaped limiting frames 33, one of which is fixed to the bottom outer wall of the base plate 6, and the other L-shaped limiting frame 33 is fixedly connected to the bottom outer wall of the base plate 6 with a rod 35, and the bottom end of the rod 35 is provided with a locking block 36. The inner wall of one of the L-shaped limiting frames 33 is provided with a limiting plate 34.

[0031] Reference Figure 2 and Figure 5In a preferred embodiment, the bottom inner wall of the base plate 6 is provided with a plurality of limiting holes 10 at equal density, and the inner walls of the plurality of limiting holes 10 are attached to the outer walls of the insertion rod 35 and the locking block 36. The bottom inner wall of the limiting hole 10 is provided with a limiting groove 37, and the inner diameter of the limiting groove 37 is larger than the inner diameter of the limiting hole 10. When fixing the optical heart rate sensor 8, firstly, one side of it is attached to the inner wall of the L-shaped limiting frame 33 fixed on the base plate 6, then another L-shaped limiting frame 33 is taken out, a suitable limiting hole 10 is found, the insertion rod 35 is inserted and rotated to fix it, so that the limiting plate 34 covers the top surface of the optical heart rate sensor 8 for limiting, which can effectively prevent the optical heart rate sensor 8 from falling off and being damaged after the test due to its adhesion to the pressing pad 24. At the same time, by providing a plurality of limiting holes 10, it can be used to fix optical heart rate sensors 8 of different specifications.

[0032] Working principle: When testing the optical heart rate sensor 8, the optical heart rate sensor 8 is first fixed to the base plate 6 by the limiting mechanism 7. Then, the vascular simulation mechanism 1 is pressed down by the pressing mechanism 3. During the pressing process, the outer sleeve 12 is lowered by manually pressing down the lever 14, and the spring 15 deforms at the same time. The inner sleeve 16 is still located on the inner wall of the outer sleeve 12 and is limited by fitting against the inner wall of the outer sleeve 12. Compared with automatic pressing, this method is easier to control the pressing pressure and can be easily adjusted according to individual working speed, with higher adaptability. Furthermore, the pressing pad 24 presses on the light emitter and detector, and the centrifugal pump 19 is controlled to simulate the heart pumping blood, drawing out the red liquid in the reservoir 18 and simulating the blood flow state through the fluid inlet tube 20. When the pressing pad 24 is pressed in place, the light emitter and detector identify the flow rate in the fluid inlet tube 20 and display the heart rate index. By viewing the data and the device... The consistency of the set data is used to determine whether the optical heart rate sensor 8 is qualified. Since simulating the blood pumping state through the centrifugal pump 19 has data stability compared to human heart rate detection, it can quickly and intuitively test the optical heart rate sensor 8, improving testing efficiency. At the same time, the set time relay can stop the centrifugal pump 19 within a certain period of time, thereby checking whether the alarm system of the optical heart rate sensor 8 is normal, realizing the diversity of detection data. After the optical heart rate sensor 8 is tested normally, the stepper motor 32 is started to drive one of the double-ended lead screws 25 to rotate. Under the action of the synchronous pulley 28 and the synchronous belt 29, both double-ended lead screws 25 rotate simultaneously. Correspondingly, the two sets of lead screw nuts 26 drive the baffle 30 to move inward and block the bottom of the fluid inlet hose 20, simulating the obstruction of human bones and tendons. It is observed whether the optical heart rate sensor 8 can operate normally when obstructed, making the simulation state more realistic and further enhancing the diversity of the test.

[0033] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A testing device for an optical heart rate sensor in a smartwatch, comprising a main support (4), characterized in that, A pressing mechanism (3) is provided on one side of the main support (4), a vascular simulation mechanism (1) is provided at the bottom end of the pressing mechanism (3), an obstacle simulation mechanism (2) is provided at the bottom end of the vascular simulation mechanism (1), a base plate (6) is connected to the bottom end of the main support (4), a control panel (5) is connected to one side of the base plate (6), and a limiting mechanism (7) is provided at the top end of the base plate (6). An optical heart rate sensor (8) is snapped into the inner wall of the limiting mechanism (7). The optical heart rate sensor (8) includes a light emitter and a detector. The vascular simulation mechanism (1) includes a reservoir (18) and a supporting shell (23). The top of the 23) is connected to a connecting frame (11). The inside of the liquid storage tank (18) is provided with a liquid-conducting hose (20), and most of the liquid-conducting hose (20) is located inside the supporting shell (23). The outer wall of the liquid-conducting hose (20) is provided with multiple limiting frames (21), and the liquid-conducting hose (20) is fixed to the inner wall of the supporting shell (23) by multiple limiting frames (21). The bottom end of the supporting shell (23) is provided with a pressing pad (24). One end of the liquid-conducting hose (20) is connected to a centrifugal pump (19). A time relay (17) is provided on one side of the outer wall of the liquid storage tank (18), and the time relay (17) is connected to the centrifugal pump (19). The two sides of the supporting shell (23) are connected to the side supporting shell (22). The obstacle simulation mechanism (2) is set inside the side supporting shell (22). The obstacle simulation mechanism (2) includes two double-ended lead screws (25), and the two ends of the double-ended lead screws (25) are respectively provided with bearing seats (31). The bearing seats (31) are fixed to the inner wall of the side supporting shell (22). Two screw nuts (26) are respectively engaged on the outer walls of the two double-ended screws (25). A baffle (30) is connected to the inner wall of one side of the screw nut (26). Synchronous rollers (28) are respectively connected to the outer walls of the two double-ended screws (25) on the same side. A synchronous belt (29) is connected to the outer walls of the two synchronous rollers (28). The baffle (30) is adapted to open and close under the drive of the double-ended screws (25) to form a shield between the fluid inlet hose (20) and the optical heart rate sensor (8).

2. The optical heart rate sensor testing device for a smartwatch according to claim 1, characterized in that, One end of one of the double-ended lead screws (25) is fixedly connected to a stepper motor (32), and the stepper motor (32) is located on one side of the side support housing (22).

3. The optical heart rate sensor testing device for a smartwatch according to claim 1, characterized in that, The pressing mechanism (3) includes an inner rod (16), and an outer sleeve (12) is movably sleeved on the outer wall of the inner rod (16). A spring (15) is connected to the top end of the outer sleeve (12), and one end of the spring (15) and the inner rod (16) are simultaneously fixed to the top inner wall of the main support (4). The connecting frame (11) is fixed to the bottom end of the outer sleeve (12).

4. The optical heart rate sensor testing device for a smartwatch according to claim 3, characterized in that, A snap-fit ​​plate (13) is connected to one side of the outer wall of the outer sleeve (12), and a paddle (14) is connected to one side of the outer wall of the snap-fit ​​plate (13). A slot (9) is provided on one side of the inner wall of the main bracket (4), and the snap-fit ​​plate (13) is movably snapped into the slot (9).

5. The optical heart rate sensor testing device for a smartwatch according to claim 1, characterized in that, The limiting mechanism (7) includes two L-shaped limiting frames (33), one of which is fixed to the bottom outer wall of the base plate (6), and the other L-shaped limiting frame (33) has a rod (35) fixedly connected to its bottom outer wall, and a locking block (36) is provided at the bottom end of the rod (35). A limiting plate (34) is provided on the inner wall of one of the L-shaped limiting frames (33).

6. The optical heart rate sensor testing device for a smartwatch according to claim 5, characterized in that, The bottom inner wall of the base plate (6) is provided with multiple limiting holes (10) at equal density, and the inner wall of the multiple limiting holes (10) fits the outer wall of the insertion rod (35) and the card block (36). The bottom inner wall of the limiting hole (10) is provided with a limiting circular groove (37), and the inner diameter of the limiting circular groove (37) is larger than the inner diameter of the limiting hole (10).

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