A flexible sensor and a preparation process thereof

Abstract

This invention discloses a flexible sensor and its fabrication process, relating to the field of sensor technology. It aims to solve the technical problem that existing wearable flexible sensors, after prolonged wear, cause pressure on the skin of the arm, resulting in poor wearing comfort. The invention includes a first monitoring mechanism and a second monitoring mechanism. The first monitoring mechanism comprises a first upper frame and a first lower frame, and the second monitoring mechanism comprises a second upper frame and a second lower frame. Upper flexible plates are arranged on the inner sidewalls of both the first and second upper frames, with a heart rate sensor and a body temperature sensor arranged on the bottom surface of the upper flexible plates. Lower flexible plates are arranged on the inner sidewalls of both the first and second lower frames, with a blood pressure sensor and a blood oxygen sensor arranged on the top surface of the lower flexible plates. An air pressure regulating mechanism is arranged between the first and second monitoring mechanisms. This invention has the advantage of being able to switch the monitoring position on the arm skin, improving wearing comfort.

Description

Technical Field

[0001] This invention relates to the field of sensor technology, and more specifically, to a flexible sensor and its fabrication process. Background Technology

[0002] Flexible sensors, as devices not specifically designed for the transmission or conversion of specific variables, have broad application prospects and can play a role in various fields, such as medical, industrial, and environmental monitoring. Because flexible sensors are not limited to the measurement of specific variables, they can be customized and adjusted according to different application requirements. By changing materials, structures, or sensing mechanisms, they can adapt to different measurement objects and environmental conditions, further enabling flexible sensors to achieve multi-functional integration and reducing the need for multiple single-function sensors.

[0003] For example, when monitoring human physiological parameters, flexible sensors can simultaneously monitor multiple physiological parameters such as heart rate, blood pressure, and body temperature, rather than just measuring a single indicator. By acquiring multiple health information about the human body through flexible sensor devices, a more comprehensive understanding of the body's physical condition can be achieved.

[0004] Existing methods for monitoring human physiological parameters typically employ wearable flexible sensors, which are attached to the arm to monitor health in real time. While these sensors offer some flexibility, prolonged wear can still cause discomfort, such as pressure on the skin leading to redness, itching, or even allergies. Furthermore, the elasticity or tightness of these sensors is difficult to adjust, and since the arm typically tapers from the wrist towards the forearm, prolonged wear can exacerbate discomfort. Even adjusting the sensor's position towards the arm to alleviate skin discomfort may increase pressure, causing even greater discomfort. Moreover, the varying body shapes and sizes of individuals mean that wearable flexible sensors cannot perfectly conform to everyone's skin, potentially affecting monitoring accuracy and user experience. Therefore, we propose a flexible sensor and its fabrication process. Summary of the Invention

[0005] The purpose of this invention is to provide a flexible sensor and its manufacturing process to solve the technical problem that existing wearable flexible sensors, after prolonged wear, will cause pressure on the skin of the arm, resulting in poor wearing comfort.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a flexible sensor, comprising a first monitoring mechanism and a second monitoring mechanism, the first monitoring mechanism and the second monitoring mechanism being connected by a plurality of fixed rods; the first monitoring mechanism comprising a first upper frame and a first lower frame, the first upper frame and the first lower frame being movably connected; the second monitoring mechanism comprising a second upper frame and a second lower frame, the second upper frame and the second lower frame being movably connected; the first upper frame and the second upper frame are connected by a plurality of fixed rods, and the first lower frame and the second lower frame are connected by a plurality of fixed rods; an upper flexible plate is arranged on the inner sidewall of both the first upper frame and the second upper frame, the bottom of the upper flexible plate... A heart rate sensor and a body temperature sensor are arranged on the surface. The heart rate sensor is used to detect changes in heart rate by detecting changes in the arm's pulse, and the body temperature sensor is used to detect heat dissipation by detecting changes in the temperature of the arm's skin. A lower flexible plate is arranged on the inner sidewall of both the first and second lower frames. A blood pressure sensor and a blood oxygen sensor are arranged on the top surface of the lower flexible plate. The blood pressure sensor is used to monitor changes in blood pressure in the blood vessels, and the blood oxygen sensor is used to monitor blood oxygen saturation in individuals with respiratory diseases. A pressure regulating mechanism is arranged between the first and second monitoring mechanisms to adjust the alternating monitoring of human physiology by the first and second monitoring mechanisms.

[0007] Preferably, the heart rate sensor, body temperature sensor, blood pressure sensor, and blood oxygen sensor are arranged in a ring inside the first upper frame and the first lower frame.

[0008] Preferably, a screw runs through the top of the second upper frame from top to bottom and is threadedly engaged with the screw. A fixing plate is movably connected to the end of the screw. The bottom of the fixing plate is connected to the upper flexible plate. A rotating block is provided at the top of the screw. The top of the first upper frame, the first lower frame, and the bottom of the second lower frame are provided with structural components identical to the screw.

[0009] Preferably, a cover plate one is connected to the side wall of the first upper frame, and a cover plate two is connected to the side wall of the second upper frame. A snap-fit ​​channel is formed between the cover plate one and the cover plate two. A positioning block one is provided on the top surface of the cover plate one, and a positioning block two is provided on the top surface of the cover plate two. The positioning blocks one and the positioning blocks two are distributed in an alternating manner. A lower cover plate is provided between the first lower frame and the second lower frame. A rotating plate is movably connected to the top surface of the lower cover plate. The rotating plate is used to rotate after passing through the snap-fit ​​channel, so that the cover plate one and the cover plate two form a snap-fit ​​structure with the lower cover plate.

[0010] Preferably, the second upper frame has two compartments inside, and the bottom of the upper flexible plate is movably arranged inside the compartments. The first upper frame, the first lower frame, and the second lower frame have the same structural components as the second upper frame.

[0011] Preferably, the first upper frame has multiple air chambers 1 inside, and the bottom of each air chamber 1 is connected to an elastic bag 1. The first lower frame has multiple air chambers 2 inside, and the top of each air chamber 2 is connected to an elastic bag 2. The second upper frame has multiple air chambers 3 inside, corresponding to the air chambers 1, and the bottom of each air chamber 3 is connected to an elastic bag 3. The second lower frame has multiple air chambers 4 inside, corresponding to the air chambers 2, and the top of each air chamber 4 is connected to an elastic bag 4. The bottoms of the elastic bags 1 and 3 are in contact with the top of the upper flexible plate. The tops of the elastic bags 2 and 4 are in contact with the bottom of the lower flexible plate. The inner cavities of the air chambers 1, 2, 3, and 4 are filled with air. The elastic bags 1, 2, 3, and 4 are made of soft, elastic material, which deforms and expands under air pressure, exerting compressive force on the upper and lower flexible plates.

[0012] Preferably, the air pressure regulating mechanism includes an upper regulating ring and a lower regulating ring. A clamping plate is provided at the bottom of one end of the upper regulating ring. A slot is provided on the side wall of the clamping plate. The clamping plate is inserted into the top of one end of the lower regulating ring through the slot. A sleeve plate is provided at the top of the other end of the lower regulating ring. A slot is provided at the top of the sleeve plate. The sleeve plate is inserted into the bottom of the other end of the upper regulating ring through the slot.

[0013] Preferably, multiple fixing rods penetrate the sidewalls of the upper and lower adjusting rings, and the upper and lower adjusting rings slide in cooperation with the multiple fixing rods. A push-pull plate is connected to the top of the upper adjusting ring, and a movable groove is formed on the sidewall of the push-pull plate. An insert rod is arranged in the movable groove, and the insert rod penetrates the top of the push-pull plate and extends above the upper adjusting ring. A spring is sleeved on the circumferential sidewall of the insert rod, and a limit plate is connected to the bottom of the spring. The sidewall of the limit plate is set as an inclined surface. A pressing plate is arranged on the side of the movable groove, and two sliding rods are connected to the sidewall of the pressing plate. The sliding rods are inserted into the side of the push-pull plate. The sliding rod is slidably engaged with the side wall of the push-pull plate. A second spring is sleeved on the outer circumference of the sliding rod. One end of the second spring is fixedly connected to the side wall of the pressing plate, and the other end of the second spring is fixedly connected to the side wall of the push-pull plate. The side wall of the pressing plate is also provided with two wedge-shaped inserts. The wedge-shaped inserts are used to insert into the bottom surface of the limiting plate through the inclined surface of the side wall of the limiting plate to raise the limiting plate. An adjustment plate is arranged at the bottom of the insert rod. One end of the adjustment plate is connected to the upper side wall of the first upper frame, and the other end is connected to the upper side wall of the second upper frame. Multiple adjustment holes are opened on the top surface of the adjustment plate, and the bottom of the insert rod is inserted into the adjustment holes.

[0014] Preferably, the inner walls of the upper and lower adjusting rings are connected to the outer walls of the moving plate via connecting columns, and there are multiple connecting columns and moving plates; a moving rod passes through the side wall of the moving plate and is fixedly connected to the moving rod; a fixed cylinder is slidably connected to both ends of the moving rod; a piston is connected to the side wall of the fixed cylinder; an air cylinder is slidably connected to the fixed cylinder; the piston is arranged in the inner cavity of the air cylinder; the inner cavity of the air cylinder is connected to the inner cavity of the first air chamber; a limiting plate is provided at both ends of the moving rod; the limiting plate is located in the inner cavity of the fixed cylinder; the two ends of the moving rod are configured as symmetrical structural components; the air pressure regulating mechanism connects multiple first air chambers and multiple corresponding third air chambers, and connects multiple second air chambers and multiple corresponding fourth air chambers.

[0015] Preferably, the fabrication process of the flexible sensor includes the following steps:

[0016] S1. Wearing operation: Rotate the first upper frame and the second upper frame around the first lower frame and the second lower frame to open them. Place the wearer's arm inside the first lower frame and the second lower frame. Then rotate the first upper frame and the second upper frame to close them, so that cover plate one and cover plate two are placed on the lower cover plate. The rotating plate will pass through the snap-fit ​​channel to reach the top surface of cover plate one and cover plate two. Then rotate the rotating plate so that the side wall of the rotating plate contacts the side wall of the positioning block one side wall and the side wall of the positioning block two side wall, so that cover plate one and cover plate two are firmly snapped into the lower cover plate.

[0017] S2. Initial adjustment of the sensor fits the arm. After wearing, manually rotate the rotating block at the top of the screw to move the screw inward at the top of the second upper frame. This will cause the fixing plate to push the upper flexible plate towards the surface of the arm. The upper flexible plate will then cause the heart rate sensor and body temperature sensor to fit against the surface of the arm. After adjusting to a comfortable angle, adjust the lower flexible plate in the same way as above to make the blood pressure sensor and blood oxygen sensor fit against the surface of the arm.

[0018] S3. Precise adjustment of the sensor's contact arm: After initial adjustment of the sensor's contact arm, the two pressing plates are pinched, causing them to move towards each other towards the push-pull plate. This further drives the wedge-shaped insert to insert from the inclined surface of the limit plate's side wall into the bottom surface of the limit plate, raising the limit plate and causing the insert rod to move upward, so that the bottom of the insert rod leaves the adjustment hole on the top surface of the adjustment plate. Then, by moving the push-pull plate towards the first monitoring mechanism, the push-pull plate drives the upper and lower adjustment rings towards the first monitoring mechanism. The upper and lower adjustment rings, through multiple moving plates, drive multiple moving rods towards the first monitoring mechanism. The multiple moving rods drive multiple pistons to squeeze forward in the inner cavities of multiple air cylinders. The pressure forces the gas inside multiple air cylinders into multiple corresponding air chambers 1 and 2. This causes the elastic bag 1 at the bottom of air chamber 1 to deform and expand under the pressure of the gas, exerting pressure on the upper flexible plate. This allows the upper flexible plate to deform and conform to the shape of the arm surface for a more precise fit. Similarly, the elastic bag 2 at the top of air chamber 2 deforms and expands under the pressure of the gas, exerting pressure on the lower flexible plate. This allows the lower flexible plate to deform and conform to the shape of the arm surface for a more precise fit. This further ensures that the heart rate sensor, body temperature sensor, blood pressure sensor, and blood oxygen sensor are more precisely attached to the arm surface to monitor human physiological parameters.

[0019] S4. Alternating monitoring and adjustment of the sensors: After the sensors of the first monitoring mechanism have been monitoring the surface of the arm for a long time, they will exert pressure on the skin tissue, causing fatigue and soreness in the arm. Simply move the push-pull plate towards the second monitoring mechanism using the method described above. At this time, the moving rod moves towards the second monitoring mechanism, which will drive multiple pistons in the first monitoring mechanism to move back in the corresponding air cylinder cavities. This will draw the gas from the air chambers one and two into the corresponding air cylinders, further aggravating the elastic bag of the first monitoring mechanism. When the elastic bag contracts and resets, it loses the squeezing force on the upper and lower flexible plates, allowing the heart rate sensor, body temperature sensor, blood pressure sensor, and blood oxygen sensor of the first monitoring mechanism to relax and avoid pressure on the arm. At the same time, when the push-pull plate moves towards the second monitoring mechanism, the moving rod will drive multiple pistons in the second monitoring mechanism to squeeze forward in multiple corresponding air cylinder cavities. Similarly, the working principle of S3 makes the heart rate sensor, body temperature sensor, blood pressure sensor, and blood oxygen sensor of the second monitoring mechanism fit more accurately on the surface of the arm to monitor human physiological parameters.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. This invention designs the first and second monitoring mechanisms into an integrated structure. When worn on the arm, the air pressure adjustment mechanism allows the first and second monitoring mechanisms to alternately adhere to and monitor the human body's physiology. This avoids prolonged pressure on the same area of ​​the arm skin by the sensor, which can cause discomfort. By switching the monitoring position on the arm skin, the wearing comfort is improved.

[0022] 2. This invention also allows for manual rotation of the rotating block at the top of the screw, causing the screw to move inward from the top of the second upper frame. This movement drives the fixing plate to push the upper flexible plate towards the arm surface. The upper flexible plate then causes the heart rate sensor and body temperature sensor to adhere to the arm surface. After adjusting to a comfortable angle, the lower flexible plate is adjusted in the same way as described above, allowing the blood pressure sensor and blood oxygen sensor to adhere to the arm surface. By positioning the arm from both the top and bottom, the fit of the sensors can be adjusted according to the thickness of the human arm, and the tightness can be adjusted according to the user's sensation, further improving the wearing comfort.

[0023] 3. This invention also involves pinching two pressing plates, causing them to move towards each other in the direction of the push-pull plate. This further drives the wedge-shaped insert to be inserted from the inclined surface of the side wall of the limiting plate into the bottom surface of the limiting plate, raising the limiting plate and causing the insert rod to move upward, so that the bottom of the insert rod leaves the adjustment hole on the top surface of the adjusting plate. Then, by moving the push-pull plate towards the first monitoring mechanism, the push-pull plate drives the upper and lower adjusting rings to move towards the first monitoring mechanism. The upper and lower adjusting rings, through multiple moving plates, drive multiple moving rods to move towards the first monitoring mechanism. The multiple moving rods drive multiple pistons to squeeze forward in the inner cavities of multiple air cylinders, causing the gas inside the multiple air cylinders to be squeezed into the multiple corresponding air chambers one and two. This further causes the elastic bag one at the bottom of air chamber one to be compressed by the gas. The air chamber expands and deforms, exerting pressure on the upper flexible plate, causing it to conform to the shape of the arm surface for a more precise fit. Similarly, the elastic bag at the top of the air chamber expands and deforms under gas pressure, exerting pressure on the lower flexible plate, causing it to conform to the shape of the arm surface for a more precise fit. This further ensures that the heart rate sensor, body temperature sensor, blood pressure sensor, and blood oxygen sensor fit the arm surface more accurately, monitoring human physiological parameters. By using compressed gas to generate gas pressure on the elastic bag, the sensors are subjected to uniform force and deform according to the shape of the arm, enhancing the fit of the sensors to the arm, improving wearing comfort, and increasing the accuracy of sensor monitoring. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention from one perspective;

[0025] Figure 2 This is a schematic diagram of the overall structure of the present invention from a second perspective;

[0026] Figure 3 This is a schematic diagram showing the overall structure of the present invention broken down;

[0027] Figure 4 This is a schematic diagram of the upper flexible plate and lower flexible plate structure of the present invention;

[0028] Figure 5 This is a schematic diagram of the open state structure of the present invention;

[0029] Figure 6 This is a schematic diagram of the internal structure of the second upper frame and the second lower frame of the present invention;

[0030] Figure 7 This is a schematic diagram of the lower cover plate structure of the present invention;

[0031] Figure 8 This is a schematic cross-sectional view of the air pressure regulating mechanism of the present invention;

[0032] Figure 9 This is an enlarged cross-sectional schematic diagram of the air pressure regulating mechanism of the present invention;

[0033] Figure 10 This is a schematic diagram of the upper and lower adjusting rings of the present invention;

[0034] Figure 11 This is a schematic diagram of the push-pull plate structure of the present invention;

[0035] Figure 12 This is a schematic diagram of one usage state of the present invention.

[0036] Explanation of the labels in the diagram:

[0037] 1. First monitoring mechanism; 2. Second monitoring mechanism; 3. Fixing rod; 4. First upper frame; 5. First lower frame; 6. Second upper frame; 7. Second lower frame; 8. Upper flexible plate; 9. Heart rate sensor; 10. Body temperature sensor; 11. Lower flexible plate; 12. Blood pressure sensor; 13. Blood oxygen sensor; 14. Air pressure regulation mechanism;

[0038] 401. Cover plate 1; 402. Positioning block 1; 403. Air chamber 1; 404. Elastic bag 1;

[0039] 501. Lower cover plate; 502. Rotating plate; 503. Air chamber two; 504. Elastic bag two;

[0040] 601. Screw; 602. Fixing plate; 603. Rotating block; 604. Cover plate II; 605. Positioning block II; 606. Plate hopper; 607. Air chamber III; 608. Elastic bag III;

[0041] 701. Air chamber four; 702. Elastic bag four;

[0042] 1401. Upper adjusting ring; 1402. Lower adjusting ring; 1403. Clamping plate; 1404. Sleeve plate; 1405. Push-pull plate; 1406. Movable groove; 1407. Insert rod; 1408. Spring 1; 1409. Limiting plate; 1410. Pressing plate; 1411. Slide rod; 1412. Spring 2; 1413. Wedge-shaped insert; 1414. Adjusting plate; 1415. Adjusting hole; 1416. Connecting column; 1417. Moving plate; 1418. Moving rod; 1419. Fixed cylinder; 1420. Piston; 1421. Air cylinder; 1422. Limiting plate. Detailed Implementation

[0043] like Figures 1 to 12 As shown, the present invention relates to a flexible sensor, including a first monitoring mechanism 1 and a second monitoring mechanism 2, which are connected by a plurality of fixed rods 3.

[0044] In an embodiment of the present invention, the first monitoring mechanism 1 includes a first upper frame 4 and a first lower frame 5, which are movably connected; the second monitoring mechanism 2 includes a second upper frame 6 and a second lower frame 7, which are movably connected; the first upper frame 4 and the second upper frame 6 are connected by a plurality of fixing rods 3, and the first lower frame 5 and the second lower frame 7 are connected by a plurality of fixing rods 3; the inner sidewalls of the first upper frame 4 and the second upper frame 6 are each provided with an upper flexible plate 8, and a heart rate sensor 9 and a body temperature sensor 10 are arranged on the bottom surface of the upper flexible plate 8. The heart rate sensor 9 is used to detect the trend of heart rate changes by detecting the pulse of the arm, and the body temperature sensor 10 is used to detect the temperature of the arm skin. The system detects changes in body heat dissipation. Lower flexible plates 11 are arranged on the inner walls of both the first lower frame 5 and the second lower frame 7. A blood pressure sensor 12 and a blood oxygen sensor 13 are arranged on the top surface of the lower flexible plate 11. The blood pressure sensor 12 monitors the pressure change trend in blood vessels, and the blood oxygen sensor 13 monitors blood oxygen saturation in individuals with respiratory diseases. A pressure regulating mechanism 14 is arranged between the first monitoring mechanism 1 and the second monitoring mechanism 2. The pressure regulating mechanism 14 regulates the alternating monitoring of human physiology by the first monitoring mechanism 1 and the second monitoring mechanism 2. The heart rate sensor 9, body temperature sensor 10, blood pressure sensor 12, and blood oxygen sensor 13 are arranged in a ring inside the first upper frame 4 and the first lower frame 5.

[0045] In this invention, the heart rate sensor 9, body temperature sensor 10, blood pressure sensor 12, and blood oxygen sensor 13 all belong to the category of flexible sensors and are existing technologies in this example, so there is no need to elaborate further. This invention designs the first monitoring mechanism 1 and the second monitoring mechanism 2 to be an integrated structure. After being worn on the arm, the air pressure adjustment mechanism 14 can adjust the first monitoring mechanism 1 and the second monitoring mechanism 2 to alternately adhere to and monitor human physiology, avoiding prolonged pressure on the arm skin by the sensors, which would cause discomfort to the arm skin. By switching the monitoring position on the arm skin, the wearing comfort is improved.

[0046] In an embodiment of the present invention, a screw 601 extends from top to bottom through the top of the second upper frame 6 and is threadedly engaged with the screw 601. A fixing plate 602 is movably connected to the end of the screw 601, and a flexible plate 8 is connected to the bottom of the fixing plate 602. A rotating block 603 is provided on the top of the screw 601. The top of the first upper frame 4, the bottom of the first lower frame 5 and the second lower frame 7 are provided with structural components identical to the screw 601. The present invention designs the first monitoring mechanism 1 and the second monitoring mechanism 2 to be an integrated structure. When worn on the arm, the air pressure adjustment mechanism 14 can adjust the first monitoring mechanism 1 and the second monitoring mechanism 2 to alternately adhere to and monitor the human body's physiology, avoiding prolonged pressure on the same position of the arm skin by the sensor, which could cause discomfort to the arm skin. By switching the monitoring position on the arm skin, the wearing comfort is improved.

[0047] In another embodiment of the present invention, a cover plate 401 is connected to the side wall of the first upper frame 4, and a cover plate 604 is connected to the side wall of the second upper frame 6, forming a snap-fit ​​channel between the cover plate 401 and the cover plate 604; a positioning block 402 is provided on the top surface of the cover plate 401, and a positioning block 605 is provided on the top surface of the cover plate 604, with the positioning blocks 402 and 605 arranged in an alternating pattern; a lower cover plate 501 is provided between the first lower frame 5 and the second lower frame 7, and a rotating plate 502 is movably connected to the top surface of the lower cover plate 501. The rotating plate 502 is used to rotate after passing through the snap-fit ​​channel, so that the cover plate 401 and the cover plate 604 form a snap-fit ​​structure with the lower cover plate 501. This invention opens by rotating the first upper frame 4 and the second upper frame 6 around the first lower frame 5 and the second lower frame 7. The wearer's arm is placed inside the first lower frame 5 and the second lower frame 7. Then, the first upper frame 4 and the second upper frame 6 are rotated to close, so that cover plate 1 401 and cover plate 2 604 cover the lower cover plate 501. The rotating plate 502 passes through the snap-fit ​​channel to reach the top surface of cover plate 1 401 and cover plate 2 604. Then, the rotating plate 502 is rotated so that the side wall of the rotating plate 502 contacts the side wall of positioning block 1 402 and the side wall of positioning block 2 605, so that cover plate 1 401 and cover plate 2 604 are firmly snapped into the lower cover plate 501, thereby improving the stability of the device after wearing.

[0048] In another embodiment of the present invention, two compartments 606 are provided inside the second upper frame 6, and the bottom of the upper flexible plate 8 is movably arranged inside the compartments 606. The first upper frame 4, the first lower frame 5, and the second lower frame 7 are provided with the same structural components as those inside the second upper frame 6. Multiple air chambers 403 are provided inside the first upper frame 4, and elastic bags 404 are connected to the bottom of the air chambers 403. Multiple air chambers 503 are provided inside the first lower frame 5, and elastic bags 504 are connected to the top of the air chambers 503. Multiple air chambers 607 corresponding to the air chambers 403 are provided inside the second upper frame 6, and elastic bags 608 are connected to the bottom of the air chambers 607. Multiple air chambers 701 corresponding to the air chambers 503 are provided inside the second lower frame 7, and elastic bags 702 are connected to the top of the air chambers 701. The bottoms of the elastic bags 404 and 608 are in contact with the top of the upper flexible plate 8.

[0049] The tops of elastic bags 504 and 702 are in contact with the bottom of the lower flexible plate 11; the cavities of air chambers 403, 503, 607, and 701 are filled with air; elastic bags 404, 504, 608, and 702 are made of soft, elastic material, which deforms and expands under air pressure, exerting pressure on the upper flexible plate 8 and the lower flexible plate 11. This invention utilizes compressed gas to generate gas pressure on the elastic bags, enabling the sensor to be subjected to uniform force and deform according to the shape of the arm, thereby enhancing the fit of the sensor to the arm, improving the comfort after wearing and the accuracy of sensor monitoring.

[0050] In another embodiment of the present invention, the air pressure regulating mechanism 14 includes an upper regulating ring 1401 and a lower regulating ring 1402. A clamping plate 1403 is provided at the bottom of one end of the upper regulating ring 1401. A slot is provided on the side wall of the clamping plate 1403. The clamping plate 1403 is inserted into the top of one end of the lower regulating ring 1402 through the slot. A sleeve plate 1404 is provided at the top of the other end of the lower regulating ring 1402. A slot is provided at the top of the sleeve plate 1404. The sleeve plate 1404 is connected to the bottom of the other end of the upper regulating ring 1401 through the slot. The upper and lower adjustment rings 1401 and 1402 are connected by a plug-in joint, with multiple fixing rods 3 passing through the side walls of the upper adjustment ring 1401 and 1402, and the upper and lower adjustment rings 1401 and 1402 are slidably engaged with the multiple fixing rods 3. By designing the upper adjustment ring 1401 and 1402 as a plug-in joint structure, this invention facilitates the synchronous movement of the upper and lower adjustment rings 1401 and 1402 after the device is worn, and the upper and lower adjustment rings 1401 and 1402 can be easily separated after the device is opened.

[0051] In another embodiment of the present invention, a push-pull plate 1405 is connected to the top of the upper adjusting ring 1401. A movable groove 1406 is formed on the side wall of the push-pull plate 1405. A rod 1407 is arranged in the movable groove 1406, passing through the top of the push-pull plate 1405 and extending above the upper adjusting ring 1401. A spring 1408 is sleeved on the circumferential side wall of the rod 1407. A limiting plate 1409 is connected to the bottom of the spring 1408, and the side wall of the limiting plate 1409 is sloped. A pressing plate 1410 is arranged on the side of the movable groove 1406. Two sliding rods 1411 are connected to the side wall. The sliding rods 1411 are inserted into the side wall of the push-pull plate 1405 and slide in cooperation with the side wall of the push-pull plate 1405. A second spring 1412 is sleeved on the outer circumference of the sliding rod 1411. One end of the second spring 1412 is fixedly connected to the side wall of the pressing plate 1410, and the other end of the second spring 1412 is fixedly connected to the side wall of the push-pull plate 1405. The side wall of the pressing plate 1410 is also provided with two wedge-shaped inserts 1413. The wedge-shaped inserts 1413 are used to insert into the bottom surface of the limiting plate 1409 through the inclined surface of the side wall of the limiting plate 1409 to raise the limiting plate 1409.

[0052] An adjusting plate 1414 is arranged at the bottom of the insertion rod 1407. One end of the adjusting plate 1414 is connected to the upper side wall of the first upper frame 4, and the other end is connected to the upper side wall of the second upper frame 6. The top surface of the adjusting plate 1414 has multiple adjusting holes 1415, and the bottom of the insertion rod 1407 is inserted into the adjusting holes 1415. In this invention, by pinching the two pressing plates 1410, the two pressing plates 1410 are moved towards each other in the direction of the push-pull plate 1405, which further drives the wedge-shaped insertion rod. Block 1413 is inserted into the bottom surface of the limiting plate 1409 from the inclined surface of the side wall of the limiting plate 1409, raising the limiting plate 1409 and causing the insertion rod 1407 to move upward, so that the bottom of the insertion rod 1407 leaves the adjustment hole 1415 on the top surface of the adjustment plate 1414. By using the cooperation between the insertion rod 1407 and the adjustment plate 1414, the movement and locking states of the upper adjustment ring 1401 and the lower adjustment ring 1402 when sliding on multiple fixed rods 3 are adjusted.

[0053] In another embodiment of the present invention, the inner circumferential walls of the upper adjusting ring 1401 and the lower adjusting ring 1402 are respectively connected to the outer circumferential wall of the moving plate 1417 via connecting posts 1416. Multiple connecting posts 1416 and moving plates 1417 are present. A moving rod 1418 passes through the side wall of the moving plate 1417 and is fixedly connected to it. Fixed cylinders 1419 are slidably connected to both ends of the moving rod 1418. A piston 1420 is connected to the side wall of the fixed cylinder 1419. An air cylinder 1421 is slidably connected to the fixed cylinder 1419. The piston 1420 is arranged inside the air cylinder 1421. The inner cavity of cylinder 1421 is connected to the inner cavity of air chamber 403. Both ends of the moving rod 1418 are provided with limiting plates 1422, which are located within the inner cavity of the fixed cylinder 1419. The two ends of the moving rod 1418 are symmetrical structural components. The air pressure regulating mechanism 14 connects multiple air chambers 403 and multiple corresponding air chambers 607, and multiple air chambers 503 and multiple corresponding air chambers 701. This invention moves the push-pull plate 1405 towards the first monitoring mechanism 1, causing the push-pull plate 1405 to drive the upper adjusting ring 1401 and the lower adjusting ring 1401. 402 moves towards the first monitoring mechanism 1. The upper adjusting ring 1401 and the lower adjusting ring 1402 drive multiple moving rods 1418 to move towards the first monitoring mechanism 1 via multiple moving plates 1417. The multiple moving rods 1418 drive multiple pistons 1420 to squeeze forward in the inner cavity of multiple air cylinders 1421, causing the gas inside the multiple air cylinders 1421 to be squeezed into the multiple corresponding air chambers 1 403 and 2 503. This further causes the elastic bag 404 at the bottom of air chamber 1 403 to deform and expand under the pressure of the gas, thus squeezing the upper flexible plate 8. Pressure causes the upper flexible plate 8 to deform and conform to the shape of the arm surface for a more precise fit. Similarly, the elastic bag 504 at the top of the air chamber 503 deforms and expands under the pressure of gas, exerting pressure on the lower flexible plate 11. This causes the lower flexible plate 11 to deform and conform to the shape of the arm surface for a more precise fit. Furthermore, this allows the heart rate sensor 9, body temperature sensor 10, blood pressure sensor 12, and blood oxygen sensor 13 to fit more precisely on the arm surface, enabling the monitoring of human physiological parameters. The system is easy to adjust, has a high degree of fit, and provides a high level of comfort.

[0054] As another embodiment of the present invention, a fabrication process for a flexible sensor includes the following steps:

[0055] S1. Wearing operation: Rotate the first upper frame 4 and the second upper frame 6 around the first lower frame 5 and the second lower frame 7 to open them. Place the wearer's arm inside the first lower frame 5 and the second lower frame 7. Then rotate the first upper frame 4 and the second upper frame 6 to close them, so that cover plate 1 401 and cover plate 2 604 cover the lower cover plate 501. The rotating plate 502 will pass through the snap-fit ​​channel to reach the top surface of cover plate 1 401 and cover plate 2 604. Then rotate the rotating plate 502 so that the side wall of the rotating plate 502 contacts the side wall of positioning block 1 402 and the side wall of positioning block 2 605, so that cover plate 1 401 and cover plate 2 604 are firmly snapped into the lower cover plate 501.

[0056] S2. Initial adjustment of the sensor fits the arm. After wearing, manually rotate the rotating block 603 at the top of the screw 601 to move the screw 601 inward at the top of the second upper frame 6. This causes the fixing plate 602 to push the upper flexible plate 8 towards the surface of the arm. The upper flexible plate 8 causes the heart rate sensor 9 and the body temperature sensor 10 to fit against the surface of the arm. After adjusting to a comfortable angle, adjust the lower flexible plate 11 according to the above method to make the blood pressure sensor 12 and the blood oxygen sensor 13 fit against the surface of the arm.

[0057] S3. Precise adjustment of the sensor's contact arm: After initial adjustment of the sensor's contact arm, the two pressing plates 1410 are pinched, causing them to move towards the push-pull plate 1405. This further drives the wedge-shaped insert 1413 to insert into the bottom surface of the limiting plate 1409 from the inclined surface of the side wall of the limiting plate 1409, raising the limiting plate 1409 and causing the insert rod 1407 to move upward, so that the bottom of the insert rod 1407 leaves the adjustment hole 1415 on the top surface of the adjusting plate 1414. Then, by moving the push-pull plate 1405 towards the first monitoring mechanism 1, the push-pull plate 1405 drives the upper adjusting ring 1401 and the lower adjusting ring 1402 towards the first monitoring mechanism 1. The upper adjusting ring 1401 and the lower adjusting ring 1402 drive multiple moving rods 1418 towards the first monitoring mechanism 1 through multiple moving plates 1417. 1418 drives multiple pistons 1420 to press forward within the inner cavities of multiple air cylinders 1421, causing the gas inside the multiple air cylinders 1421 to be squeezed into the corresponding air chambers 1 403 and 2 503. This further causes the elastic bag 1 404 at the bottom of air chamber 1 403 to deform and expand under the pressure of the gas, exerting pressure on the upper flexible plate 8. This allows the upper flexible plate 8 to deform and conform to the shape of the arm surface for a more precise fit. Similarly, the elastic bag 2 504 at the top of air chamber 2 503 deforms and expands under the pressure of the gas, exerting pressure on the lower flexible plate 11. This allows the lower flexible plate 11 to deform and conform to the shape of the arm surface for a more precise fit. This further allows the heart rate sensor 9, body temperature sensor 10, blood pressure sensor 12, and blood oxygen sensor 13 to fit more precisely on the arm surface for monitoring human physiological parameters.

[0058] S4. Alternating monitoring and adjustment of the sensors: After the sensors of the first monitoring mechanism 1 monitor the surface of the arm for a long time, they will exert pressure on the skin tissue of the arm, causing fatigue and soreness. Simply move the push-pull plate 1405 towards the second monitoring mechanism 2 according to the above-mentioned adjustment method. At this time, the moving rod 1418 moves towards the second monitoring mechanism 2. The moving rod 1418 will drive the multiple pistons 1420 in the first monitoring mechanism 1 to move back in the inner cavity of the multiple corresponding air cylinders 1421, so that the gas in the inner cavity of the first air chamber 403 and the second air chamber 503 is drawn into the multiple corresponding air cylinders 1421, further causing the elastic bag 4 of the first monitoring mechanism 1 to... When the elastic bag 504 contracts and resets, it loses the squeezing force on the upper flexible plate 8 and the lower flexible plate 11, allowing the heart rate sensor 9, body temperature sensor 10, blood pressure sensor 12 and blood oxygen sensor 13 of the first monitoring mechanism 1 to relax, avoiding pressure on the arm. At the same time, when the push-pull plate 1405 moves towards the second monitoring mechanism 2, the moving rod 1418 will drive multiple pistons 1420 in the second monitoring mechanism 2 to squeeze forward in the inner cavity of multiple corresponding air cylinders 1421. Similarly, the working principle of S3 makes the heart rate sensor 9, body temperature sensor 10, blood pressure sensor 12 and blood oxygen sensor 13 of the second monitoring mechanism 2 fit more accurately on the surface of the arm to monitor human physiological parameters.

[0059] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. A flexible sensor, characterized in that, It includes a first monitoring unit (1) and a second monitoring unit (2), which are connected by multiple fixed rods (3); The first monitoring mechanism (1) includes a first upper frame (4) and a first lower frame (5), which are movably connected; The second monitoring mechanism (2) includes a second upper frame (6) and a second lower frame (7), which are movably connected; The first upper frame (4) and the second upper frame (6) are connected by a plurality of fixed rods (3), and the first lower frame (5) and the second lower frame (7) are connected by a plurality of fixed rods (3); The inner walls of the first upper frame (4) and the second upper frame (6) are provided with upper flexible plates (8). The bottom surface of the upper flexible plates (8) is provided with a heart rate sensor (9) and a body temperature sensor (10). The heart rate sensor (9) is used to detect the trend of heart rate change through the pulse of the arm, and the body temperature sensor (10) is used to detect the body heat dissipation through the temperature change of the arm skin. The inner walls of the first lower frame (5) and the second lower frame (7) are provided with lower flexible plates (11). The top surface of the lower flexible plate (11) is provided with a blood pressure sensor (12) and a blood oxygen sensor (13). The blood pressure sensor (12) is used to monitor the pressure change trend of blood vessels, and the blood oxygen sensor (13) is used to monitor the blood oxygen saturation of people with respiratory diseases. A pressure regulating mechanism (14) is arranged between the first monitoring mechanism (1) and the second monitoring mechanism (2). The pressure regulating mechanism (14) is used to regulate the alternating monitoring of human physiology by the first monitoring mechanism (1) and the second monitoring mechanism (2).

2. The flexible sensor according to claim 1, characterized in that, The heart rate sensor (9), body temperature sensor (10), blood pressure sensor (12) and blood oxygen sensor (13) are arranged in a ring inside the first upper frame (4) and the first lower frame (5).

3. A flexible sensor according to claim 2, characterized in that, The second upper frame (6) has a screw (601) running through it from top to bottom, and is threadedly engaged with the screw (601). A fixing plate (602) is movably connected to the end of the screw (601). The bottom of the fixing plate (602) is connected to the upper flexible plate (8). A rotating block (603) is provided on the top of the screw (601). The top of the first upper frame (4), the bottom of the first lower frame (5) and the second lower frame (7) are provided with the same structural components as the screw (601).

4. A flexible sensor according to claim 3, characterized in that, The first upper frame (4) is connected to a cover plate one (401) on its side wall, and the second upper frame (6) is connected to a cover plate two (604) on its side wall. A snap-fit ​​channel is formed between the cover plate one (401) and the cover plate two (604). The top surface of the cover plate one (401) is provided with a positioning block one (402), and the top surface of the cover plate two (604) is provided with a positioning block two (605). The positioning block one (402) and the positioning block two (605) are distributed in an alternating manner. A lower cover plate (501) is provided between the first lower frame (5) and the second lower frame (7). A rotating plate (502) is movably connected to the top surface of the lower cover plate (501). The rotating plate (502) is used to rotate after passing through the snap-fit ​​channel, so that the first cover plate (401) and the second cover plate (604) form a snap-fit ​​structure with the lower cover plate (501).

5. A flexible sensor according to claim 4, characterized in that, The second upper frame (6) has two hoppers (606) inside. The bottom of the upper flexible plate (8) is movably arranged inside the hopper (606). The first upper frame (4), the first lower frame (5) and the second lower frame (7) are provided with the same structural components as the second upper frame (6).

6. A flexible sensor according to claim 5, characterized in that, The first upper frame (4) has multiple air chambers (403) inside, and the bottom of the air chambers (403) is connected to an elastic bag (404). The first lower frame (5) has multiple air chambers (503) inside, and the top of the air chambers (503) is connected to an elastic bag (504). The second upper frame (6) has multiple air chambers (607) corresponding to the first air chamber (403) inside, and the bottom of the air chamber (607) is connected to an elastic bag (608). The second lower frame (7) has multiple air chambers (701) corresponding to the second air chamber (503) inside, and the top of the air chamber (701) is connected to an elastic bag (702). The bottoms of the first elastic bag (404) and the third elastic bag (608) are in contact with the top of the upper flexible plate (8); The tops of the second elastic bag (504) and the fourth elastic bag (702) are in contact with the bottom of the lower flexible plate (11); The inner cavities of air chamber one (403), air chamber two (503), air chamber three (607) and air chamber four (701) are filled with air; The elastic bag one (404), elastic bag two (504), elastic bag three (608) and elastic bag four (702) are made of soft elastic material and are used to deform and expand when subjected to air pressure, thereby generating extrusion force on the upper flexible plate (8) and the lower flexible plate (11).

7. A flexible sensor according to claim 6, characterized in that, The air pressure regulating mechanism (14) includes an upper regulating ring (1401) and a lower regulating ring (1402). A clamping plate (1403) is provided at the bottom of one end of the upper regulating ring (1401). A slot is provided on the side wall of the clamping plate (1403). The clamping plate (1403) is inserted into the top of one end of the lower regulating ring (1402) through the slot. A sleeve plate (1404) is provided at the top of the other end of the lower regulating ring (1402). A slot is provided at the top of the sleeve plate (1404). The sleeve plate (1404) is inserted into the bottom of the other end of the upper regulating ring (1401) through the slot.

8. A flexible sensor according to claim 7, characterized in that, Multiple fixing rods (3) pass through the sidewalls of the upper adjusting ring (1401) and the lower adjusting ring (1402), and the upper adjusting ring (1401) and the lower adjusting ring (1402) slide in cooperation with the multiple fixing rods (3). A push-pull plate (1405) is connected to the top of the upper adjusting ring (1401). A movable groove (1406) is opened on the sidewall of the push-pull plate (1405). An insert rod (1407) is arranged in the movable groove (1406). The insert rod (1407) passes through the top of the push-pull plate (1405) and extends to the top of the upper adjusting ring (1401). A spring (1408) is sleeved on the circumferential sidewall of the insert rod (1407). A limit plate (1409) is connected to the bottom of the spring (1408). The sidewall of the limit plate (1409) is set as an inclined surface. A pressing plate (1410) is arranged on the side of the movable groove (1406). Two sliding rods (1411) are connected to the side wall of the pressing plate (1410). The sliding rods (1411) are inserted into the side wall of the push-pull plate (1405) and slide in cooperation with the side wall of the push-pull plate (1405). A second spring (1412) is sleeved on the outer circumference of the sliding rod (1411). One end of the second spring (1412) is fixedly connected to the side wall of the pressing plate (1410), and the other end of the second spring (1412) is fixedly connected to the side wall of the push-pull plate (1405). Two wedge-shaped inserts (1413) are also provided on the side wall of the pressing plate (1410). The wedge-shaped inserts (1413) are used to insert into the bottom surface of the limiting plate (1409) through the inclined surface of the side wall of the limiting plate (1409) to raise the limiting plate (1409). An adjustment plate (1414) is arranged at the bottom of the insertion rod (1407). One end of the adjustment plate (1414) is connected to the upper side wall of the first upper frame (4), and the other end is connected to the upper side wall of the second upper frame (6). A plurality of adjustment holes (1415) are opened on the top surface of the adjustment plate (1414), and the bottom of the insertion rod (1407) is inserted into the adjustment holes (1415).

9. A flexible sensor according to claim 8, characterized in that, The inner circumference of the upper adjusting ring (1401) and the lower adjusting ring (1402) are respectively connected to the outer circumference of the moving plate (1417) via connecting posts (1416), and there are multiple connecting posts (1416) and moving plates (1417); The movable plate (1417) has a movable rod (1418) passing through its side wall and is fixedly connected to the movable rod (1418). Both ends of the movable rod (1418) are slidably connected to a fixed cylinder (1419). The side wall of the fixed cylinder (1419) is connected to a piston (1420). The fixed cylinder (1419) is slidably connected to an air cylinder (1421). The piston (1420) is arranged in the inner cavity of the air cylinder (1421). The inner cavity of the air cylinder (1421) is connected to the inner cavity of the first air chamber (403). Both ends of the movable rod (1418) are provided with a limiting plate (1422). The limiting plate (1422) is arranged in the inner cavity of the fixed cylinder (1419). The moving rod (1418) is configured with symmetrical structural components at both ends. The air pressure regulating mechanism (14) connects multiple air chambers one (403) and multiple corresponding air chambers three (607), and connects multiple air chambers two (503) and multiple corresponding air chambers four (701).

10. The fabrication process of a flexible sensor according to claim 9, characterized in that, Includes the following steps: S1. Wearing operation: Rotate the first upper frame (4) and the second upper frame (6) around the first lower frame (5) and the second lower frame (7) to open. Place the wearer's arm inside the first lower frame (5) and the second lower frame (7). Then rotate the first upper frame (4) and the second upper frame (6) to cover the lower cover plate (501) so that the cover plate one (401) and the cover plate two (604) cover the lower cover plate (501). The rotating plate (502) will pass through the snap-fit ​​channel to reach the top surface of the cover plate one (401) and the cover plate two (604). Then rotate the rotating plate (502) so that the side wall of the rotating plate (502) contacts the side wall of the positioning block one (402) and the side wall of the positioning block two (605) so that the cover plate one (401) and the cover plate two (604) are firmly snapped into the lower cover plate (501). S2. Initial adjustment of sensor fit to arm. After wearing, manually rotate the rotating block (603) at the top of the screw (601) to move the screw (601) inward at the top of the second upper frame (6), which drives the fixing plate (602) to push the upper flexible plate (8) to the surface of the arm. The upper flexible plate (8) drives the heart rate sensor (9) and body temperature sensor (10) to fit to the surface of the arm. After adjusting to a comfortable angle, adjust the lower flexible plate (11) according to the above method to make the blood pressure sensor (12) and blood oxygen sensor (13) fit to the surface of the arm. S3. Precise adjustment of the sensor's contact arm: After initial adjustment of the sensor's contact arm, the two pressing plates (1410) are pinched, causing them to move towards the push-pull plate (1405). This further drives the wedge-shaped insert (1413) to insert from the inclined surface of the side wall of the limiting plate (1409) into the bottom surface of the limiting plate (1409), raising the limiting plate (1409) and causing the insert rod (1407) to move upward, so that the bottom of the insert rod (1407)... After leaving the adjustment hole (1415) on the top surface of the adjustment plate (1414), the push-pull plate (1405) is moved towards the first monitoring mechanism (1). The push-pull plate (1405) drives the upper adjustment ring (1401) and the lower adjustment ring (1402) to move towards the first monitoring mechanism (1). The upper adjustment ring (1401) and the lower adjustment ring (1402) drive multiple moving rods (1418) to move towards the first monitoring mechanism (1) through multiple moving plates (1417). A movable lever (1418) drives multiple pistons (1420) to press forward within the inner cavities of multiple air cylinders (1421), causing the gas inside the multiple air cylinders (1421) to be squeezed into the corresponding air chambers 1 (403) and 2 (503). This further causes the elastic bag 1 (404) at the bottom of air chamber 1 (403) to deform and expand under the pressure of the gas, generating a compressive force on the upper flexible plate (8). This allows the upper flexible plate (8) to deform and conform to the shape of the arm surface, further... The elastic bag 2 (504) at the top of the air chamber 2 (503) deforms and expands under the pressure of the gas, which exerts a squeezing force on the lower flexible plate (11), so that the lower flexible plate (11) can conform to the shape of the arm surface and deform to achieve a more precise fit. This further enables the heart rate sensor (9), body temperature sensor (10), blood pressure sensor (12) and blood oxygen sensor (13) to fit more precisely on the arm surface and monitor human physiological parameters. S4. Alternating monitoring and adjustment of sensors: After the sensors of the first monitoring mechanism (1) monitor the surface of the arm for a long time, they will exert pressure on the skin tissue of the arm surface, causing fatigue and soreness in the arm. Simply move the push-pull plate (1405) towards the second monitoring mechanism (2) according to the above-mentioned moving adjustment method. At this time, the moving rod (1418) moves towards the second monitoring mechanism (2). The moving rod (1418) will drive multiple pistons (1420) in the first monitoring mechanism (1) to move back in the inner cavity of multiple corresponding air cylinders (1421), so that the gas in the inner cavity of air chamber one (403) and air chamber two (503) is drawn into multiple corresponding air cylinders (1421), further causing the elastic bag one (404) and elastic bag two (503) of the first monitoring mechanism (1) to move back in the inner cavity of multiple corresponding air cylinders (1421). When the second sac (504) contracts and resets, it loses the squeezing force on the upper flexible plate (8) and the lower flexible plate (11), allowing the heart rate sensor (9), body temperature sensor (10), blood pressure sensor (12) and blood oxygen sensor (13) of the first monitoring mechanism (1) to relax, avoiding pressure on the arm. At the same time, when the push-pull plate (1405) moves towards the second monitoring mechanism (2), the moving rod (1418) will drive multiple pistons (1420) in the second monitoring mechanism (2) to squeeze forward in the inner cavity of multiple corresponding air cylinders (1421). Similarly, the working principle of S3 makes the heart rate sensor (9), body temperature sensor (10), blood pressure sensor (12) and blood oxygen sensor (13) of the second monitoring mechanism (2) fit more accurately on the surface of the arm, and monitor human physiological parameters.

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