Wrist type intelligent wearable device

Abstract

The invention belongs to the technical field of intelligent sensor diagnosis, and particularly relates to wrist type intelligent wearable equipment which comprises an intelligent dial plate, a watchband and a PLC microcontroller fixedly arranged in the intelligent dial plate, and further comprises two winding and retracting mechanisms, a self-releasing convex surface base assembly and multiple active ventilation and cooling mechanisms. The clamping force can be automatically adjusted and controlled based on the thickness of the wrist, it is ensured that the sensor is stably attached, and it is avoided that the comfort is affected by too large local pressure; the curvature of the convex surface of the sensor can be automatically adjusted according to wrist skin temperature changes, and compression discomfort and blood flow signal weakening are prevented; active ventilation and heat dissipation can be achieved when the skin temperature is too high, the wearing comfort is improved, and the temperature is prevented from affecting the signal collection accuracy.

Description

Technical Field

[0001] This invention belongs to the field of intelligent sensor diagnostic technology, and in particular relates to a wrist-worn intelligent wearable device. Background Technology

[0002] Wrist-worn smart wearable devices are portable medical monitoring devices that integrate multimodal sensors, data processing modules, and wireless communication functions. They are typically fixed to the wrist with a strap and use biomedical signal acquisition technology to achieve real-time, non-invasive monitoring of human physiological parameters.

[0003] When using wrist-worn smart wearable devices, the skin surface of the wrist is not perfectly flat. Especially during exercise, the skin undergoes curvature changes due to muscle contraction, resulting in a larger air gap between the watch face and the wrist skin. Excessive air gap can affect the signal acquisition quality of the wearable device. Taking PPG (photoplethysmography) detection as an example, for every 0.1mm increase in air gap, red light (660nm) attenuates by about 12%, and infrared light (940nm) attenuates by about 8%. Therefore, the sensor substrate in current smart wearable devices adopts a convex structure design to achieve close contact with the skin and reduce air gap. This can reduce the fluctuation range of reflected light intensity from ±25% to ±5%, significantly improving signal stability and increasing the optical signal coupling efficiency by more than 60%.

[0004] When wearing smart wearable devices for extended periods, the lack of airflow between the watch face and the wrist skin, along with the heat generated by the sensors during prolonged operation, causes the wrist skin temperature to gradually rise. Initially, when the wrist skin is at a lower temperature, blood flow slows down due to vasoconstriction, resulting in a decrease of approximately 30% in the AC component amplitude of the photoplethysmography (PPG) signal. At this point, the sensor needs to be in close contact (pitch <0.1mm) to improve optical coupling efficiency and avoid errors in detecting parameters such as heart rate and blood oxygen due to weak signals. Therefore, the curvature of the sensor's convex surface needs to be set more sharply at this time. When the wrist skin temperature exceeds 34°C (the normal temperature range for human skin is usually 32°C to 36°C), blood vessels begin to dilate (due to heat dissipation needs), and the wrist skin becomes more sensitive to mechanical pressure. If the curved surface is continuously pressed, it will cause a stinging sensation on the wrist skin. Furthermore, pressure on blood vessels at high temperatures weakens the blood flow signal, affecting the accuracy of sensor signal acquisition. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a wrist-worn smart wearable device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a wrist-worn smart wearable device, comprising a smart watch face, a watch strap, and a PLC microcontroller fixedly installed within the smart watch face, and further comprising: Two sets of winding and unwinding mechanisms are fixedly installed at the connection between the smart dial and the watch strap, and are used to adjust the clamping force on the wrist when the watch strap is worn. A self-slowing convex substrate assembly is mounted on the rear side of the smart dial and connected to the monitoring sensor within the smart dial. Multiple sets of active ventilation and cooling mechanisms are evenly embedded on the back of the smart watch face to provide ventilation and heat dissipation at the contact points between the smart watch face and the skin of the wrist.

[0007] In the aforementioned wrist-worn smart wearable device, the winding and unwinding mechanism includes a storage shell fixedly connected to the end of the smart watch face. Two bearing seats are symmetrically fixedly connected to one side of the inner wall of the storage shell. The inner walls of the two bearing seats are rotatably sleeved with the same winding shaft through ball bearings. One end of the watch strap is wound around the winding shaft. The side wall of the storage shell has a through-hole for the watch strap to extend through. The inner wall of the storage shell is also fixedly equipped with a self-locking motor for driving the winding shaft to rotate.

[0008] In the aforementioned wrist-worn smart wearable device, the self-slowing convex substrate assembly includes a nickel-titanium alloy sheet disposed on the inner side and a copper-aluminum-nickel alloy sheet disposed on the outer side. A rigid ceramic substrate is sandwiched between the nickel-titanium alloy sheet and the copper-aluminum-nickel alloy sheet. An outer frame is fixedly connected to the outer edges of the nickel-titanium alloy sheet, the copper-aluminum-nickel alloy sheet and the rigid ceramic substrate. A plurality of elastic limiting plates and compensating springs are fixedly connected between the outer frame and the smart dial.

[0009] In the aforementioned wrist-worn smart wearable device, the active ventilation and cooling mechanism includes an insert groove on the back of the smart dial. A pressure cylinder is fixedly connected to the inner wall of the insert groove. A lifting tube is movably inserted into the bottom of the pressure cylinder. A silicone lifting block is fixedly connected to the lower end of the lifting tube. A pressure piston is sealed and fixedly fitted onto the upper wall of the lifting tube. A retaining spring, sleeved outside the lifting tube, is fixedly connected to the lower end of the pressure piston and the bottom of the inner wall of the pressure cylinder. An electrically controlled on / off valve is installed on the upper wall of the lifting tube. The upper end of the pressure cylinder... A miniature barometer is fixedly installed on the side wall. A blower head is fixedly connected to the lower end of the lifting pipe. An air pump is fixedly installed at the bottom of the mounting slot. An air inlet pipe is fixedly connected to the air pump. The end of the air inlet pipe away from the air pump extends through and out of the outer wall of the smart dial. A dustproof net corresponding to the position of the air inlet pipe is fixedly connected to the outer wall of the smart dial. An air supply pipe is fixedly inserted into the upper end of the pressure cylinder. An elastic air delivery pipe is fixedly connected to the blower head. The upper ends of the air supply pipe and the elastic air delivery pipe are connected to the air outlet of the air pump through a two-way valve.

[0010] In the aforementioned wrist-worn smart wearable device, an electric push rod is fixedly installed on one side of the inner wall of the storage shell. The moving end of the electric push rod is fixedly connected to a mounting frame. An encoder is fixedly installed inside the mounting frame. A driven gear is fixedly connected to the input end of the encoder. A drive gear that meshes with the driven gear is fixedly connected to one end of the take-up shaft.

[0011] In the aforementioned wrist-worn smart wearable device, multiple miniature pressure sensors are uniformly fixedly connected to the inner wall of the smart dial, and multiple elastic compression rods corresponding to the positions of the miniature pressure sensors are fixedly connected to the outer wall of the outer frame.

[0012] In the aforementioned wrist-worn smart wearable device, a sealing groove is provided at the connection between the smart dial and the copper-aluminum-nickel alloy sheet, and a silicone sealing ring that is tightly attached to the outer side of the copper-aluminum-nickel alloy sheet is fixedly installed on the inner wall of the sealing groove.

[0013] In the aforementioned wrist-worn smart wearable device, a plurality of blocking blocks are symmetrically fixedly connected to the upper side of the inner wall of the pressure cylinder, which are connected to the upper end of the pressure piston.

[0014] Compared with existing technologies, the advantages of this invention are as follows: 1. Through the smart watch face, winding and unwinding mechanism, and watch strap, the wearing clamping force on the smart watch face can be automatically adjusted and confirmed based on the user's wrist size. This ensures the stable fit of the sensors inside the smart watch face and avoids excessive clamping force, which could cause excessive local pressure during wear and thus affect wearing comfort.

[0015] 2. By setting a self-slowing convex base component, the curvature of the sensor convex base can be automatically adjusted based on changes in wrist skin temperature. This avoids discomfort caused by excessive pressure on the wrist skin due to continuous excessive curvature, and also avoids the problem that excessive pressure can lead to a continuous rise in wrist skin temperature, which can weaken blood flow signals and affect the accuracy of sensor signal acquisition.

[0016] 3. With the active ventilation and cooling mechanism, when the temperature of the wrist skin is too high, it can be reduced in time by actively ventilating and dissipating heat. This not only makes it more comfortable to wear, but also avoids the problem that the continuous rise in temperature of the wrist skin will affect the accuracy of signal acquisition. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a side view of the structure of the present invention; Figure 3 This is a side cross-sectional view of the winding and unwinding mechanism of the present invention; Figure 4 This is a schematic diagram of the structure of the self-slowing convex substrate assembly of the present invention; Figure 5 yes Figure 4 Enlarged schematic diagram of the middle section; Figure 6 This is a cross-sectional structural schematic diagram of the active ventilation and cooling mechanism of the present invention.

[0018] In the diagram: 1 Smart dial, 2 Winding and unwinding mechanism, 21 Storage shell, 22 Bearing housing, 23 Rewinding shaft, 24 Through-hole, 25 Self-locking motor, 26 Electric actuator, 27 Mounting frame, 28 Encoder, 29 Driven gear, 210 Driven gear, 3 Self-slowing convex substrate assembly, 31 Nickel-titanium alloy sheet, 32 Copper-aluminum-nickel alloy sheet, 33 Rigid ceramic substrate, 34 Outer frame, 35 Elastic limiting plate, 36 Compensating spring, 37 Miniature pressure sensor 38. Elastic compression rod; 39. Sealing groove; 310. Silicone sealing ring; 4. Active ventilation and cooling mechanism; 41. Embedding groove; 42. Pressure cylinder; 43. Lifting pipe; 44. Silicone lifting block; 45. Pressure piston; 46. Holding spring; 47. Electrically controlled on / off valve; 48. Miniature barometer; 49. Spray nozzle; 410. Air pump; 411. Inlet pipe; 412. Dustproof net; 413. Air supply pipe; 414. Elastic air delivery pipe; 415. Two-way valve; 416. Blocking block; 5. Watch strap. Detailed Implementation

[0019] 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.

[0020] like Figures 1-6 As shown, a wrist-worn smart wearable device includes a smart watch face 1, a watch strap 5, and a PLC microcontroller fixedly installed in the smart watch face 1, and further includes: Two sets of winding and unwinding mechanisms 2 are fixedly installed at the connection between the smart watch face 1 and the watch strap 5. They are used to adjust the clamping force of the watch strap 5 on the wrist when worn. The winding and unwinding mechanism 2 includes a storage shell 21 fixedly connected to the end of the smart watch face 1. Two bearing seats 22 are symmetrically fixedly connected to one side of the inner wall of the storage shell 21. The inner walls of the two bearing seats 22 are rotatably sleeved with the same winding shaft 23 through ball bearings. One end of the watch strap 5 is wound around the winding shaft 23. The side wall of the storage shell 21 has a useful opening. Through the through-hole 24 extending through the watch strap 5, a self-locking motor 25 for driving the winding shaft 23 to rotate is also fixedly installed on the inner wall of the storage shell 21. An electric push rod 26 is fixedly installed on one side of the inner wall of the storage shell 21. A mounting frame 27 is fixedly connected to the moving end of the electric push rod 26. An encoder 28 is fixedly installed inside the mounting frame 27. A driven gear 29 is fixedly connected to the input end of the encoder 28. A driving gear 210 that meshes with the driven gear 29 is fixedly connected to one end of the winding shaft 23.

[0021] The self-slowing convex substrate assembly 3 is installed on the rear side of the smart dial 1 and connected to the monitoring sensor inside the smart dial 1. The self-slowing convex substrate assembly 3 includes a nickel-titanium alloy sheet 31 disposed on the inner side and a copper-aluminum-nickel alloy sheet 32 ​​disposed on the outer side. A rigid ceramic substrate 33 is sandwiched between the nickel-titanium alloy sheet 31 and the copper-aluminum-nickel alloy sheet 32. An outer frame 34 is fixedly connected to the outer edges of the nickel-titanium alloy sheet 31, the copper-aluminum-nickel alloy sheet 32 ​​and the rigid ceramic substrate 33. Multiple elastic limiting plates 35 and compensating springs 36 are fixedly connected between the outer frame 34 and the smart dial 1. Multiple miniature pressure sensors 37 are uniformly fixedly connected to the inner wall of the smart dial 1. Multiple elastic compression rods 38, corresponding to the positions of the miniature pressure sensors 37, are fixedly connected to the outer wall of the outer frame 34. A sealing groove 39 is provided at the connection between the smart dial 1 and the copper-aluminum-nickel alloy sheet 32. A silicone sealing ring 310, which is tightly attached to the outer side of the copper-aluminum-nickel alloy sheet 32, is fixedly installed on the inner wall of the sealing groove 39.

[0022] Multiple sets of active ventilation and cooling mechanisms 4 are evenly embedded and installed on the back side of the smart watch face 1 to ventilate and dissipate heat at the contact points between the smart watch face 1 and the wrist skin. The active ventilation and cooling mechanism 4 includes an embedding groove 41 opened on the back side of the smart watch face 1. A pressure cylinder 42 is fixedly connected to the inner wall of the embedding groove 41. A lifting tube 43 is movably inserted into the bottom of the pressure cylinder 42. A silicone lifting block 44 is fixedly connected to the lower end of the lifting tube 43. A pressure piston 45 is sealed and fixedly sleeved on the upper end of the lifting tube 43. A retaining spring 46 sleeved on the outside of the lifting tube 43 is fixedly connected to the lower end of the pressure piston 45 and the bottom of the inner wall of the pressure cylinder 42. An electrically controlled on / off valve 47 is installed on the upper end of the lifting tube 43. A micro air pressure device is fixedly installed on the upper side wall of the pressure cylinder 42. The lower end of the lifting pipe 43 is fixedly connected to a blower head 49. An air pump 410 is fixedly installed at the bottom of the mounting groove 41. An air inlet pipe 411 is fixedly connected to the air inlet of the air pump 410. The end of the air inlet pipe 411 away from the air pump 410 extends through the outer wall of the smart dial 1. A dustproof net 412 corresponding to the position of the air inlet pipe 411 is fixedly connected to the outer wall of the smart dial 1. An air supply pipe 413 is fixedly inserted into the upper end of the pressure cylinder 42. An elastic air delivery pipe 414 is fixedly connected to the blower head 49. The upper ends of the air supply pipe 413 and the elastic air delivery pipe 414 are connected to the air outlet of the air pump 410 through a two-way valve 415. Multiple blocking blocks 416 that are symmetrically fixed to the upper side of the inner wall of the pressure cylinder 42 are fixedly connected to the upper end of the pressure piston 45.

[0023] The operating principle of this invention is described as follows: The watch strap 5 is initially placed at its loosest position. When wearing the watch, the strap 5 is placed on the user's wrist, and the wearing button on the smart watch face 1 is pressed. The PLC microcontroller inside the smart watch face 1 controls the self-locking motor 25 in the winding and unwinding mechanism 2 to operate. During the wearing process, the PLC microcontroller also controls the electric push rod 26 to move the mounting frame 27 and the encoder 28, causing the driven gear 29 connected to the input end of the encoder 28 to mesh with the driving gear 210 outside the winding shaft 23. The self-locking motor... The motor 25 drives the take-up shaft 23 to rotate, and the take-up shaft 23 winds the watch strap 5 into the storage housing 21, causing the watch strap 5 to gradually tighten until the torque sensor installed in the self-locking motor 25 reaches the set threshold, indicating that the watch strap 5 has completed the initial tightening work. At this time, the PLC microcontroller controls the electric push rod 26 to drive the encoder 28 to reset and move, so that the encoder 28 is disengaged from the transmission connection with the take-up shaft 23. When the take-up shaft 23 rotates, the meshing action of the drive gear 210 and the driven gear 29 will drive the input end of the encoder 28 to rotate. The encoder 28 records the rotation angle of the winding shaft 23, which can provide feedback on the thickness of the user's wrist. Specifically, when the encoder 28 detects a larger rotation angle of the winding shaft 23, it indicates that the length of the watch strap 5 wound up is longer, meaning the user's wrist is thinner. At this time, the PLC microcontroller sets a smaller second torque signal value of the torque sensor inside the self-locking motor 25 based on the signal feedback from the encoder 28. That is, as the self-locking motor 25 continues to operate, the torque sensor inside the self-locking motor 25 stops tightening the watch strap 5 when it reaches a subsequently smaller torque signal value. The operation results in a relatively small clamping force on the watch strap 5. Conversely, when the user's wrist is thicker, the encoder 28 detects a smaller angle of rotation of the winding shaft 23, and the PLC microcontroller sets a larger second threshold for the torque sensor inside the self-locking motor 25, which makes the watch strap 5 provide a greater clamping force on the user's wrist. Because the wrists are different in thickness, the contact area between the skin and the sensor is different. If a thinner wrist uses too much clamping force, it will cause local pressure concentration (such as at the protrusion of the wrist bone), while a thicker wrist requires greater overall pressure to ensure that the sensor fits due to the larger contact area. During prolonged wear, the smart watch face 1 experiences compression and heat buildup between the watch and the wrist skin, causing the wrist skin temperature to gradually rise. In the self-relaxing convex substrate component 3, the nickel-titanium alloy sheet 31 is 0.15mm thick with a phase transition temperature of 34℃, the copper-aluminum-nickel alloy sheet 32 ​​is 0.15mm thick with a phase transition temperature of 50℃, and the rigid ceramic substrate 33 in between is 0.3mm thick. When the temperature transmitted from the wrist skin is below 34℃, both the nickel-titanium alloy sheet 31 and the copper-aluminum-nickel alloy sheet 32 ​​are in an austenitic state. A pre-bending process maintains a convex surface with a radius of R=30mm. The sensor convex substrate fits tightly against the wrist skin (contact pressure 1.2kPa) to ensure the biosignal (such as P...)... Stable acquisition of PG photoplethysmography (PPG) waves: When the temperature transmitted through the wrist skin exceeds 34°C, the nickel-titanium alloy sheet 31 begins a martensitic phase transformation, changing its crystal structure from body-centered cubic to monoclinic. The atomic arrangement becomes loose, the elastic modulus drops sharply by 40%, and the material softens. Since the lower copper-aluminum-nickel alloy sheet 32 ​​has not reached the 50°C phase transformation point, it still maintains austenitic rigidity (elastic modulus 120 GPa). After the upper nickel-titanium alloy sheet 31 softens, it cannot resist the supporting force of the lower layer and is forced to extend along the plane of the rigid ceramic substrate 33. This results in the convex curvature increasing from R=30mm to R=45mm, increasing the contact area by about 30%, and reducing the contact pressure to 0.8 kPa. The pressure dispersion reduces the skin's pressure sensation and avoids... To prevent blood flow signal attenuation caused by vascular compression under high temperatures (such as a 25% increase in the retention rate of the AC component of the PPG signal), when the lower copper-aluminum-nickel alloy sheet 32 ​​reaches the 50°C phase transition point, both the nickel-titanium alloy sheet 31 and the copper-aluminum-nickel alloy sheet 32 ​​transform into martensite, and the elastic modulus decreases synchronously. The curvature of the convex surface further decreases to R=60mm. This design serves as a safety redundancy to prevent excessive pressure on the skin from the device during pathological high temperatures (such as heating to 40°C), while also avoiding detection distortion caused by sensor overheating. When the curvature of the nickel-titanium alloy sheet 31, the copper-aluminum-nickel alloy sheet 32, and the rigid ceramic substrate 33 changes, the elastic limiting plate 35 and the compensating spring 36 will compensate for this displacement difference. Moreover, the elastic limiting plate 35 can only... Supporting deformation in one direction, and under the action of multiple elastic limiting plates 35, relative movement only occurs when the curvature of the nickel-titanium alloy sheet 31, copper-aluminum-nickel alloy sheet 32, and rigid ceramic substrate 33 changes due to temperature, ensuring the stability of the convex substrate's position during normal use. Furthermore, the provided silicone sealing ring 310, with a Shore hardness A=20 and a compression set rate <5%, compresses 0.2mm at low temperatures (tight curvature) when the convex surface curvature changes, storing elastic potential energy. At high temperatures (gentle curvature), the convex surface height decreases, and the sealing ring elastically recovers 0.2mm, filling any gaps that may appear. Simultaneously, its viscoelastic properties (loss factor tanδ=0) are also considered.15) It can absorb interface vibrations and prevent friction noise. When the skin temperature rises from normal temperature (25℃) to medium temperature (38℃), the thermal expansion of the collagen fibers in the dermis increases the skin thickness by 0.15mm. At the same time, vasodilation increases the height of the skin surface protrusion by 0.2mm. If the temperature rises further to high temperature (50℃), the viscoelastic modulus of the skin tissue drops from 12MPa to 8MPa, and the contact stiffness decreases by 33%. At this time, if the sensor maintains its original curvature, it will generate a pressure force of more than 1.2N (exceeding the safety threshold of 0.8N). Signal acquisition requires the contact pressure to be maintained at 0.4-0.6N. When the pressure is <0.4N, the distance between the sensor and the skin is >0.5mm, and the light signal attenuation exceeds 40%. When the pressure is >0.6N, the radial artery blood flow velocity drops from 50cm / s to 35cm / s, and the blood oxygen saturation measurement error is >5%. For every 1℃ increase in skin temperature, the blood vessel diameter dilates by 0.05mm, and the contact pressure needs to be reduced by 0.1N simultaneously to maintain normal blood flow. When the wrist skin temperature exceeds 34°C, causing the self-relaxing convex base component 3 to deform, the elastic compression rod 38 presses against the micro pressure sensor 37. When the micro pressure sensor 37 reaches the first pressure threshold, it indicates that the wrist skin temperature is too high and cooling is required. At this time, the PLC microcontroller controls the air pump 410 to operate, and causes the two-way valve 415 to open the air passage connecting to the air supply pipe 413. The air pump 410 draws air from outside the smart dial 1 through the air inlet pipe 411 and delivers it into the air supply pipe 413, causing the air pressure in the upper end of the pressure cylinder 42 to gradually increase. This, in turn, causes the pressure piston 45 to push the lifting tube 43 and the silicone lifting block 44 downwards and out of the mounting groove 41. Inside, the smart watch face 1 separates from the wrist skin. A miniature barometer 48 monitors the air pressure inside the pressure cylinder 42. The PLC microcontroller automatically adjusts the monitoring threshold of the miniature barometer 48 based on the clamping force of the watch strap 5 controlled by the winding and unwinding mechanism 2. The greater the clamping force of the watch strap 5, the higher the air pressure threshold of the miniature barometer 48 is set. This means the air pressure inside the pressure cylinder 42 needs to reach a higher value before the air pump 410 stops working. Because a greater clamping force of the watch strap 5 requires a greater lifting force to ensure the smart watch face 1 separates from the wrist skin, after the lifting action is completed, the PLC microcontroller then controls the two-way valve 415 to connect the air pump 410 and the elastic air delivery pipe 414. The air supply system, with air pump 410 supplying air to nozzle 49 via elastic air supply pipe 414, delivers cooling airflow through nozzle 49. This rapidly ventilates and dissipates heat at the contact point between the smart dial 1 and the wrist skin, effectively reducing the temperature of the wrist skin. After 120 seconds of continuous ventilation, the PLC microcontroller opens the electrically controlled on / off valve 47 at the upper end of the lifting pipe 43. This allows the air accumulated inside the upper end of the pressure cylinder 42 to be transported through the lifting pipe 43 to the nozzle 49 for ventilation and heat dissipation. It also quickly expels the air from the pressure cylinder 42. With the assistance of the resetting spring 46, the silicone lifting block 44 retracts back into the mounting slot 4. Within 1, when the wrist skin temperature is between 34℃ and 50℃, causing the micro pressure sensor 37 to reach the first pressure threshold, the interval between each operation of the active ventilation and cooling mechanism 4 is kept at 20 minutes to avoid continuous ventilation and heat dissipation affecting the normal wearing of the smart watch face 1. When the wrist skin temperature exceeds 50℃, causing the elastic compression rod 38 to press on the micro pressure sensor 37 to reach the preset second pressure threshold, it indicates that the current wrist skin temperature urgently needs to be cooled down. The PLC microcontroller controls the active ventilation and cooling mechanism 4 to work continuously for 300 seconds and displays a message on the smart watch face 1 suggesting that the watch should not be worn for the time being to remind the user to take appropriate action.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wrist type smart wearable device comprising a smart watch face (1), a watch band (5) and a PLC microcontroller fixedly arranged in the smart watch face (1), characterized in that, Also include: Two groups of winding mechanism (2), fixed installation in the connection of the smart watch dial (1) and watchband (5), for regulating the size of the watchband (5) when wearing on the wrist clamping force; From the slow convex base assembly (3), installed in the back of the smart watch dial (1), and connected with the monitoring sensor in the smart watch dial (1); Multiple groups of active ventilation cooling mechanism (4), evenly embedded in the back of the smart watch dial (1), for ventilation and heat dissipation of the contact position between smart watch dial (1) and wrist skin. 2.The wrist-type smart wearable device of claim 1, wherein, The winding mechanism (2) includes a receiving shell (21) fixedly connected to the end of the smart watch dial (1), two bearing seats (22) are fixedly connected to the inner wall of the receiving shell (21), the inner wall of the two bearing seats (22) is rotatably sleeved with the same winding shaft (23) through the ball bearing, one end of the watchband (5) is wound on the winding shaft (23), the side wall of the receiving shell (21) is provided with a through opening (24) for the watchband (5) to pass through, and the inner wall of the receiving shell (21) is further fixedly provided with a self-locking motor (25) for driving the winding shaft (23) to rotate. 3.The wrist-type smart wearable device of claim 1, wherein, The self-slow convex base assembly (3) includes a nickel-titanium alloy sheet (31) arranged on the inner side and a copper-aluminum-nickel alloy sheet (32) arranged on the outer side, a rigid ceramic substrate (33) is clamped between the nickel-titanium alloy sheet (31) and the copper-aluminum-nickel alloy sheet (32), and the outer edges of the nickel-titanium alloy sheet (31), the copper-aluminum-nickel alloy sheet (32) and the rigid ceramic substrate (33) are fixedly connected with an outer frame (34), a plurality of elastic limiting plates (35) and compensation springs (36) are fixedly connected between the outer frame (34) and the smart watch dial (1). 4.The wrist-type smart wearable device of claim 1, wherein, The active ventilation cooling mechanism (4) comprises an embedded groove (41) opened at the back side of the intelligent dial (1), the inner wall of the embedded groove (41) is fixedly connected with a pressure cylinder (42), the bottom of the pressure cylinder (42) movably inserts a lifting pipe (43), the lower end of the lifting pipe (43) is fixedly connected with a silica gel lifting block (44), the upper end wall of the lifting pipe (43) is sealingly fixedly sleeved with a pressure piston (45), the lower end of the pressure piston (45) and the inner wall bottom of the pressure cylinder (42) are fixedly connected with a retaining spring (46) sleeved outside the lifting pipe (43), the upper end wall of the lifting pipe (43) is provided with an electrically controlled on-off valve (47), the upper end side wall of the pressure cylinder (42) is fixedly provided with a micro barometer (48), the lower end wall of the lifting pipe (43) is fixedly communicated with a blowing head (49), the groove bottom of the embedded groove (41) is fixedly provided with an air pump (410), the air inlet of the air pump (410) is fixedly communicated with an air inlet pipe (411), one end of the air inlet pipe (411) away from the air pump (410) penetrates and extends out of the outer wall of the intelligent dial (1), the outer wall of the intelligent dial (1) is fixedly connected with a dustproof net (412) arranged at a position corresponding to the air inlet pipe (411), the upper end of the air inlet pipe (411) and the air outlet of the air pump (410) are communicated through a double-way valve (415). 5.The wrist-type smart wearable device of claim 2, wherein, The inner wall of the storage shell (21) is fixedly provided with an electric push rod (26), the moving end of the electric push rod (26) is fixedly connected with a mounting frame (27), the mounting frame (27) is fixedly provided with an encoder (28) inside, the input end of the encoder (28) is fixedly connected with a driven gear (29), one end of the winding shaft (23) is fixedly connected with a driving gear (210) engaged with the driven gear (29). 6.The wrist-type smart wearable device of claim 3, wherein, The inner wall of the intelligent dial (1) is uniformly fixedly connected with a plurality of micro pressure sensors (37), the outer wall of the outer frame (34) is fixedly connected with a plurality of elastic extrusion rods (38) arranged at positions corresponding to the micro pressure sensors (37). 7.The wrist-type smart wearable device of claim 3, wherein, The connection between the intelligent dial (1) and the copper-aluminum-nickel alloy sheet (32) is provided with a sealing groove (39), the inner wall of the sealing groove (39) is fixedly provided with a silica gel sealing ring (310) tightly attached to the outer side of the copper-aluminum-nickel alloy sheet (32). 8.The wrist-type smart wearable device of claim 4, wherein, The inner wall of the pressure cylinder (42) is symmetrically fixedly connected with a plurality of blocking blocks (416) blocked on the upper end of the pressure piston (45).

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