A wearable professional health data monitoring device for power grid operators

Abstract

This invention provides a wearable occupational health data monitoring device for power grid workers. It includes an adaptive constant-pressure fitting mechanism for driving the strap to expand in low-temperature environments, ensuring constant pressure contact between the sensor module on the back of the watch and the wearer's wrist; and an inertial-triggered joint locking mechanism for converting the flexible joint between the flexible watch head and the strap into a rigid connection upon detecting an impact. This invention provides an adaptive intelligent monitoring device for high-altitude, low-temperature, strong magnetic field, and high-impact working environments. Utilizing a bidirectional shape memory actuator and a temperature control valve, the strap automatically expands at low temperatures, eliminating wearing gaps and ensuring accurate and continuous monitoring of physiological signals; rapid locking via a MEMS accelerometer and magnetorheological fluid joint suppresses vibration and improves monitoring stability; and a permalloy alloy and coating are used to construct an anti-magnetic structure to resist interference from strong power frequency magnetic fields. The device significantly improves adaptability, reliability, and wearing comfort under extreme working conditions.

Description

Technical Field

[0001] This invention relates to health data monitoring devices, and more particularly to a wearable occupational health data monitoring device for power grid workers, belonging to the field of worker health protection technology. Background Technology

[0002] Power workers engaged in the construction and operation of high-voltage power transmission projects in high-altitude areas (such as Yunnan, Guizhou, Tibet, and Qinghai) face long-term exposure to extreme environments of hypoxia, low temperatures, and strong radiation, resulting in a significant risk of acute and chronic altitude sickness. To establish a systematic occupational health protection system, a comprehensive technical solution covering the entire chain of "monitoring—early warning—diagnosis—rescue—protection" needs to be developed. The monitoring device involved in this patent is a sensing terminal in this system that enables real-time and accurate collection of front-end physiological data.

[0003] Traditional monitoring devices, when applied to power grid operations, typically use elastic materials or mechanical buckles for their straps. This static fixing method is ill-suited to adapting to the thermal expansion and contraction of the body and the deformation of the materials themselves caused by low temperatures. It also cannot keep up with the relative movements between the skin and bones caused by complex wrist movements during operations. This can easily create gaps between the device and the wrist skin, leading to signal attenuation, fluctuations, or even interruptions in the internal sensors, affecting the accuracy of long-term monitoring data. To improve wearing comfort, monitoring watches and straps are usually connected using non-rigid connections. However, when workers use tools such as electric picks and impact drills, the high-frequency vibrations can cause the device to rotate around its axis under inertia, slapping against the back of the hand, and exacerbating the relative micro-movements between the sensors and the skin. This results in distorted or unusable data.

[0004] To address this, a wearable occupational health data monitoring device for power grid workers is proposed. Summary of the Invention

[0005] In view of this, the present invention provides a wearable occupational health data monitoring device for power grid workers to solve or alleviate the technical problems existing in the prior art, and at least provides a beneficial alternative.

[0006] The technical solution of the present invention is implemented as follows: a wearable occupational health data monitoring device for power grid workers, comprising a watch strap and a meter head, wherein the watch strap and the meter head integrate a; An adaptive constant pressure bonding mechanism is used to drive the strap to expand in low-temperature environments so that the sensor module on the back of the watch maintains constant pressure contact with the wearer's wrist. An inertial-triggered joint locking mechanism is used to convert the flexible joint between the flexible head and the strap into a rigid connection when an impact is detected.

[0007] More preferably, the adaptive constant pressure fitting mechanism includes an infusion tube embedded inside the watch band, a constraint strap installed on the outside of the watch band, an expansion fitting sleeve connected to the infusion tube, an installation cavity installed below the watch head, a storage cavity installed inside the installation cavity, a drive cavity connected to the side of the storage cavity, a connecting cylinder connected to the side of the drive cavity, a pull rod slidably passing through the connecting cylinder, a piston head adapted to the inner wall of the drive cavity installed at one end of the pull rod passing through the drive cavity, a bidirectional shape memory actuator provided on the pull rod, a temperature control valve connected to the storage cavity, and rotary fluid connectors provided on both sides of the watch head, the rotary fluid connectors being connected to the infusion tube; the storage cavity flows through the temperature control valve and the rotary fluid connectors in sequence via a pipeline and is connected to the infusion tube, and an injection port is also provided on the storage cavity.

[0008] Further preferably, the inner wall of the connecting cylinder is provided with an axial sliding groove, a limiting plate is installed at the end of the pull rod away from the drive cavity, and a protrusion structure adapted to the sliding groove is installed on the limiting plate, the protrusion being slidably disposed in the sliding groove; the bidirectional shape memory actuator is a helical spring made of shape memory alloy, one end of which is fixed to the inner wall of the connecting cylinder and the other end is fixed to the limiting plate; a protective shell is provided on the mounting cavity, the protective shell being made of permalloy; the inner side of the watch head is electroplated with a nickel-iron permalloy coating; and the watch strap is made of low-temperature resistant thermoplastic elastomer.

[0009] More preferably, the deformation of the bidirectional shape memory actuator is configured to have an approximately linear relationship with the ambient temperature; when the ambient temperature changes from high to low, it produces a linear contraction deformation, pulling the piston head into the drive chamber, and pressing the working medium in the storage chamber into the expansion sleeve through the infusion tube; when the ambient temperature changes from low to high, it produces a linear elongation deformation, pushing the piston head out of the drive chamber, and drawing the working medium in the expansion sleeve back into the storage chamber through the infusion tube.

[0010] Further preferably, the inertial trigger joint locking mechanism includes a sleeve fixed to the watch strap, one end of the sleeve being rotatably mounted on a mounting cavity, a stop worm gear being mounted on the outer wall of the sleeve, a sealed bearing being provided on the sleeve, a fluid cavity being rotatably mounted on the sleeve via the sealed bearing, the fluid cavity being mounted on the side of the mounting cavity, an arc-shaped guide plate being mounted on the mounting cavity, a slider being slidably mounted on the arc-shaped guide plate, a sleeve plate being mounted on the slider, a permanent magnet being embedded in the sleeve plate, a toothed ring being rotatably mounted at the middle section of the mounting cavity, and a through groove being formed on the outer wall of the mounting cavity corresponding to the toothed ring; the slider passes through the through groove and is connected to the toothed ring; a MEMS accelerometer is also installed in the mounting cavity, and a motion conversion transmission mechanism and an energy storage and release mechanism are provided.

[0011] More preferably, the motion conversion transmission mechanism includes an output gear rotatably mounted in the mounting cavity, the output gear meshing with a gear ring, a first acceleration gear coaxially connected below the output gear, a second acceleration gear meshing laterally with the first acceleration gear, a rack coaxially connected below the second acceleration gear, a guide rod mounted in the mounting cavity, a sliding sleeve slidably mounted on the guide rod, a toothed plate meshing with the rack mounted on the sliding sleeve, and a drive spring sleeved on the guide rod.

[0012] Further preferably, the energy storage and release mechanism includes a cylinder installed in the mounting cavity, a first piston rod slidably disposed in the cylinder, one end of the first piston rod being mounted on a sliding sleeve, a pressure injection chamber connected to the side of the cylinder, and a first one-way valve disposed at the connection between the cylinder and the pressure injection chamber, an air injection pipe connected to the side of the pressure injection chamber, a second one-way valve disposed on the air injection pipe, and one end of the air injection pipe penetrating the mounting cavity and connected to a dust cover; a pressure relief pipe also connected to the side of the cylinder, a miniature solenoid valve disposed on the pressure relief pipe, a second piston rod disposed in the pressure injection chamber, a connecting plate hinged to the tail end of the second piston rod, a drive motor installed in the mounting cavity, an eccentric wheel disposed at the output end of the drive motor, and the connecting plate being hinged to the eccentric wheel.

[0013] More preferably, an annular sealing cavity is formed between the sleeve and the fluid cavity, and the annular sealing cavity is filled with magnetorheological fluid.

[0014] More preferably, one end of the drive spring abuts against the end of the guide rod, and the other end abuts against the sliding sleeve.

[0015] More preferably, the miniature solenoid valve is electrically connected to the MEMS accelerometer and is controlled by the output signal of the MEMS accelerometer; when the impact signal detected by the MEMS accelerometer exceeds a set threshold, the miniature solenoid valve is controlled to open.

[0016] The embodiments of the present invention have the following advantages due to the adoption of the above technical solutions: I. In this invention, the built-in bidirectional shape memory actuator, in conjunction with a temperature control valve, enables the watchband to dynamically adapt to the wrist's condition. In low-temperature environments, the watchband automatically expands, eliminating the gaps caused by wrist contraction due to cold. This ensures that the sensor module maintains uniform and constant contact pressure with the skin, significantly improving the accuracy and continuity of monitoring physiological parameters such as blood oxygen and heart rate. It also greatly enhances the comfort of prolonged wear, providing a fundamental guarantee for reliable health monitoring in high-altitude, low-temperature working environments.

[0017] II. In this invention, a MEMS accelerometer is used to sense specific impacts in real time, and the magnetorheological fluid joint is controlled to quickly achieve rigid locking. This mechanism can effectively suppress severe vibrations and inertial swaying generated during high-intensity tool operations (such as the use of electric picks and impact drills). At the stable contact interface established by the fitting mechanism, this locking action can completely eliminate the relative movement between the meter head and the strap, thereby ensuring that the monitoring signal remains reliable even under the most severe operational impacts. Together, these two components constitute a highly efficient and intelligent monitoring system for high-altitude power operations.

[0018] Third, in this invention, by using a permalloy protective shell, an electroplated nickel-iron permalloy coating on the inner side of the watch head, and a low-temperature resistant thermoplastic elastomer for the watch strap, a strong magnetic field protection system is constructed. This system can effectively resist the 50Hz power frequency alternating strong magnetic field of the high-altitude power grid. The permalloy and coating can attenuate the magnetic field strength, thereby preventing interference with the internal precision electronic components from the source. Furthermore, it will not couple with the internal magnetic sensitive components, thus not affecting the precise operation of each mechanism, and further improving the working stability of the device in extreme working environments.

[0019] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the exploded structure of the protective shell in this invention; Figure 3 This is a schematic diagram of the overhead structure of the present invention; Figure 4 This is a schematic diagram of the internal structure of the mounting cavity in this invention; Figure 5 This is an exploded view of the pull rod in this invention; Figure 6 This is a schematic diagram of the exploded structure of the fluid cavity in this invention; Figure 7 This is a schematic diagram of the motion conversion transmission mechanism in this invention; Figure 8This is a schematic diagram of the internal structure of the mounting cavity in this invention; Figure 9 This is an exploded structural diagram of the toothed plate in this invention; Figure 10 This is a cross-sectional structural diagram of the mounting cavity in this invention.

[0022] Reference numerals: 1. Watch strap; 2. Watch head; 3. Restraint strap; 4. Infusion tube; 5. Expansion fitting sleeve; 6. Liquid storage chamber; 7. Drive chamber; 8. Connecting cylinder; 9. Pull rod; 10. Piston head; 11. Bidirectional shape memory actuator; 12. Temperature control valve; 13. Rotary fluid connector; 14. Injection port; 15. Sleeve; 16. Stop worm gear; 17. Fluid chamber; 18. Sealed bearing; 19. Arc-shaped guide plate; 20. Slider; 21. Sleeve plate; 22. Gear ring; 23. Through groove; 24. Output gear; 25. First acceleration 26. Gear; 27. Second acceleration gear; 28. Gear rack; 29. ​​Guide rod; 30. Sliding sleeve; 31. Gear plate; 32. Drive spring; 33. Cylinder body; 34. First piston rod; 35. Injection chamber; 36. First one-way valve; 37. Air injection pipe; 38. Dust cover; 39. Pressure relief pipe; 40. Miniature solenoid valve; 41. MEMS accelerometer; 42. Second piston rod; 43. Connecting plate; 44. Drive motor; 45. Eccentric wheel; 46. Protective shell; 47. Permanent magnet; 48. Mounting cavity; 49. Second one-way valve. Detailed Implementation

[0023] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0024] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0025] like Figure 1-10 As shown, this embodiment of the invention provides a wearable occupational health data monitoring device for power grid workers, including a watch strap 1 and a meter head 2, wherein the watch strap 1 and the meter head 2 are integrated with; An adaptive constant pressure bonding mechanism is used to drive the strap 1 to expand in low-temperature environments so that the sensor module on the back of the watch maintains constant pressure contact with the wearer's wrist. An inertial-triggered joint locking mechanism is used to convert the flexible joint between the flexible head 2 and the strap 1 into a rigid connection when an impact is detected.

[0026] like Figure 3 , 6As shown in Figure 10, in one embodiment, the adaptive constant pressure fitting mechanism includes an infusion tube 4 embedded inside the watch strap 1, a restraint strap 3 installed on the outside of the watch strap 1, an expansion fitting sleeve 5 connected to the infusion tube 4, an installation cavity 47 installed below the watch head 2, a storage cavity 6 installed inside the installation cavity 47, a drive cavity 7 connected to the side of the storage cavity 6, a connecting cylinder 8 connected to the side of the drive cavity 7, a pull rod 9 slidably passing through the connecting cylinder 8, a piston head 10 adapted to the inner wall of the drive cavity 7 installed at one end of the pull rod 9 passing through the drive cavity 7, a bidirectional shape memory actuator 11 provided on the pull rod 9, a temperature control valve 12 connected to the storage cavity 6, and rotary fluid connectors 13 provided on both sides of the watch head 2, the rotary fluid connectors 13 being connected to the infusion tube 4; the storage cavity 6 flows through the temperature control valve 12 and the rotary fluid connectors 13 in sequence through the pipeline and is connected to the infusion tube 4, and an injection port 14 is also provided on the storage cavity 6. The device needs to integrate multiple sensors to collect physiological signals (such as blood oxygen, heart rate, and body temperature) to provide a fusion data source for the backend altitude sickness risk analysis model. As a distributed sensing node, the data collected by the device must be reliably transmitted to handheld terminals and communication central stations via wireless communication methods (such as Wi-Fi / Bluetooth) and ultimately connected to "Occupational Health Data Governance and Analysis" and "Altitude Sickness Knowledge Graph Intelligent Diagnosis". The traditional strap fixing method cannot adapt to the thermal expansion and contraction of limbs caused by low temperature, which can easily lead to poor contact between the sensor and the skin, causing photoplethysmography (PPG) signal attenuation or interruption, and distorting the monitoring data of key vital signs such as blood oxygen and heart rate.

[0027] like Figure 5 , 10 As shown, in one embodiment, the inner wall of the connecting cylinder 8 is provided with an axial groove, and a limiting plate is installed at the end of the pull rod 9 away from the drive cavity 7. The limiting plate is provided with a protrusion structure that matches the groove, and the protrusion is slidably disposed in the groove. The bidirectional shape memory actuator 11 is a helical spring made of shape memory alloy. One end of the spring is fixed to the inner wall of the connecting cylinder 8, and the other end is fixed to the limiting plate. A protective shell 45 is provided on the mounting cavity 47. The protective shell 45 is made of permalloy. The inner side of the watch head 2 is electroplated with a nickel-iron permalloy coating. The watch strap 1 is made of low-temperature resistant thermoplastic elastomer.

[0028] High-altitude power grids are centered around high-voltage transmission lines, transformers, and reactors. These devices carry high-frequency 50Hz currents, generating strong alternating magnetic fields in the work area. Since high-altitude power grids are mostly outdoor structures without additional magnetic field shielding, workers are constantly exposed to this strong magnetic field environment. The protective shell 45 is made of permalloy. Permalloy has extremely high permeability and a strong magnetic focusing ability for the typical 50Hz low-frequency alternating strong magnetic field in power grid working environments. It can guide most of the external magnetic field lines into the interior of the protective shell 45, significantly attenuating the magnetic field strength penetrating into the mounting cavity 47. This fundamentally prevents signal interference and data distortion caused by strong magnetic fields to precision electronic components such as the MEMS accelerometer 40 and the miniature solenoid valve 39, ensuring the accuracy of health monitoring data. In addition, the permalloy has extremely low coercivity, fast magnetization and demagnetization response speed, and does not generate residual magnetism. It will not attract the permanent magnet 46 inside the device, nor will it cause magnetic field interference to the magnetorheological fluid between the sleeve 15 and the fluid cavity 17. It can perfectly match the magnetic response working logic of the inertial trigger joint locking mechanism, ensuring that the magnetorheological fluid solidifies quickly when the permanent magnet 46 is close and liquefies smoothly when it is far away, thus ensuring the precise triggering of joint locking and unlocking actions.

[0029] The nickel-iron permalloy coating can minimize the magnetic field strength within the mounting cavity 47 without obstructing the signal acquisition path of the sensor module on the back of the meter. At the same time, the nickel-iron permalloy also has the characteristics of low coercivity and no residual magnetism, and will not cause magnetic coupling interference with the internal permanent magnet 46 and magnetorheological fluid, thus not affecting the precise movement of the inertial trigger joint locking mechanism. The nickel-iron permalloy is a conductive metallic material, and the dense coating formed by electroplating can act as an electrostatic discharge layer, which can quickly conduct away the static charge generated by friction and environmental electrostatic induction during the operation of the meter head 2, preventing the accumulation of static charge on the inside of the meter head 2.

[0030] The low-temperature resistant thermoplastic elastomer is made of a non-magnetic insulating material with no magnetic properties. It will not become a conduction path for external magnetic field lines, thus avoiding damage to the magnetic shielding closed loop of the protective shell 45 and the inner coating of the watch head 2. It will also not cause magnetic field interference with the magnetic sensitive components inside the watch head 2. The low-temperature resistant thermoplastic elastomer has excellent antistatic properties, which can effectively reduce the amount of static electricity generated by the watch strap 1 during friction with the wrist and clothing, and prevent static electricity from interfering with the internal components of the device.

[0031] like Figure 5As shown, in one embodiment, the deformation of the bidirectional shape memory actuator 11 is configured to be approximately linearly related to the ambient temperature; when the ambient temperature changes from high to low, it produces linear contraction deformation, pulling the piston head 10 into the drive chamber 7, and pressing the working medium in the storage chamber 6 into the expansion sleeve 5 through the infusion tube 4; when the ambient temperature changes from low to high, it produces linear elongation deformation, pushing the piston head 10 out of the drive chamber 7, and drawing the working medium in the expansion sleeve 5 back into the storage chamber 6 through the infusion tube 4.

[0032] like Figure 6 , 10 As shown, in one embodiment, the inertial trigger joint locking mechanism includes a sleeve 15 fixed to the watch strap 1. One end of the sleeve 15 is rotatably mounted on the mounting cavity 47. A stop worm gear 16 is mounted on the outer wall of the sleeve 15. A sealed bearing 18 is provided on the sleeve 15. A fluid cavity 17 is rotatably mounted on the sleeve 15 through the sealed bearing 18. The fluid cavity 17 is mounted on the side of the mounting cavity 47. An arc-shaped guide plate 19 is mounted on the mounting cavity 47. A slider 20 is slidably mounted on the arc-shaped guide plate 19. A sleeve plate 21 is mounted on the slider 20. A permanent magnet 46 is embedded in the sleeve plate 21. A toothed ring 22 is rotatably mounted at the middle section of the mounting cavity 47. A through groove 23 is opened on the outer wall of the mounting cavity 47 corresponding to the toothed ring 22. The slider 20 passes through the through groove 23 and is connected to the toothed ring 22. A MEMS accelerometer 40 is also installed in the mounting cavity 47, and a motion conversion transmission mechanism and an energy storage and release mechanism are provided. Under the high-frequency vibration and accidental impact generated by tools such as electric picks and impact drills, the flexible connection between the watch head 2 and the watch strap 1 of a traditional watch will generate violent relative motion. This not only aggravates the micro-motion interference of the sensor and causes the motion data to be distorted, but may also directly cause mechanical damage to the internal precision components, causing the equipment to fail at critical moments.

[0033] like Figure 7-9 As shown, in one embodiment, the motion conversion transmission mechanism includes an output gear 24 rotatably mounted in the mounting cavity 47, the output gear 24 meshing with a gear ring 22, a first acceleration gear 25 coaxially connected below the output gear 24, a second acceleration gear 26 meshing laterally with the first acceleration gear 25, a rack 27 coaxially connected below the second acceleration gear 26, a guide rod 28 mounted in the mounting cavity 47, a sliding sleeve 29 slidably mounted on the guide rod 28, a toothed plate 30 meshing with the rack 27 mounted on the sliding sleeve 29, and a drive spring 31 sleeved on the guide rod 28.

[0034] like Figure 7 , 9As shown, in one embodiment, the energy storage and release mechanism includes a cylinder 32 installed in a mounting cavity 47. A first piston rod 33 is slidably disposed in the cylinder 32, one end of which is mounted on a sliding sleeve 29. A pressure injection chamber 34 is connected to the side of the cylinder 32, and a first one-way valve 35 is provided at the connection between the cylinder 32 and the pressure injection chamber 34. An air injection pipe 36 is connected to the side of the pressure injection chamber 34, and a second one-way valve 48 is provided on the air injection pipe 36. One end of the air injection pipe 36 passes through the mounting cavity 47 and is connected to a dust cover 37. A pressure relief pipe 38 is also connected to the side of the cylinder 32, and a miniature solenoid valve 39 is provided on the pressure relief pipe 38. A second piston rod 41 is disposed in the pressure injection chamber 34, and a connecting plate 42 is hinged to the tail end of the second piston rod 41. A drive motor 43 is installed in the mounting cavity 47, and an eccentric wheel 44 is installed at the output end of the drive motor 43. The connecting plate 42 is hinged to the eccentric wheel 44.

[0035] In one embodiment, an annular sealing cavity is formed between the sleeve 15 and the fluid cavity 17, and the annular sealing cavity is filled with magnetorheological fluid.

[0036] like Figure 9 As shown, in one embodiment, one end of the drive spring 31 abuts against the end of the guide rod 28, and the other end abuts against the sliding sleeve 29.

[0037] like Figure 9 As shown, in one embodiment, the micro solenoid valve 39 is electrically connected to the MEMS accelerometer 40 and is controlled by the output signal of the MEMS accelerometer 40; when the impact signal detected by the MEMS accelerometer 40 exceeds a set threshold, the micro solenoid valve 39 is controlled to open.

[0038] The working principle of this invention is as follows: It begins when the ambient temperature drops. At this time, the bidirectional shape memory actuator 11 (using shape memory alloy properties), installed inside the connecting cylinder 8, senses the low temperature and generates linear contraction deformation. This deformation is converted into a linear pulling force on the pull rod 9, which is fixedly connected to its two ends by a limiting plate. Under the guidance and constraint of the sliding groove and protrusion on the inner wall of the connecting cylinder 8, the pull rod 9 is stably pulled axially, causing the piston head 10 at its end to move into the drive chamber 7. The movement of the piston head 10 generates pressure on the sealed working medium in the drive chamber 7 and the liquid storage chamber 6 connected to it. With the temperature control valve 12 opening the passage according to the low temperature signal, the compressed working medium flows through the pipeline, through the rotary fluid connector 13, and into the infusion tube 4 embedded inside the watch strap 1, and is finally injected into the expansion sleeve 5. The expansion sleeve 5 expands under pressure, pushing the inner side of the watch strap 1 towards the wrist skin, thereby offsetting the gap caused by cold contraction and achieving constant pressure contact between the bottom detection sensor and the wrist. When the ambient temperature rises, the bidirectional shape memory actuator 11 generates a reverse linear elongation deformation, which in turn pushes the piston head 10 to move outward. At the same time, under the premise that the temperature control valve 12 opens the passage according to the temperature signal, the working medium in the expansion sleeve 5 is drawn back to the liquid storage chamber 6 through the original path, so that the watch strap 1 returns to a loose state and avoids excessive compression.

[0039] During operation, the MEMS accelerometer 40 monitors the start-up in real time. When the detected impact acceleration exceeds a preset threshold, the MEMS accelerometer 40 immediately outputs an electrical signal to control the opening of the miniature solenoid valve 39. At this time, the high-pressure gas pre-compressed and stored in the cylinder 32 is rapidly released through the pressure relief pipe 38, causing the cylinder pressure to drop. The first piston rod 33 moves into the cylinder 32 under the action of external air pressure or the elastic force of the drive spring 31. At the same time, the spring 31 releases elastic potential energy and drives the sliding sleeve 29 to slide rapidly along the guide rod 28. The toothed plate 30 on the sliding sleeve 29 moves with it. Under the meshing action with the toothed rod 27, it drives the toothed rod 27 and the second acceleration gear 26 to transmit. Under the meshing action with the first acceleration gear 25, it drives the first acceleration gear 25 and the output gear 24 to accelerate and rotate. Finally, under the meshing action with the toothed ring 22, it drives the toothed ring 22 to rotate at a certain angle in the mounting cavity 47. The toothed ring 22 drives the sleeve plate 21 and the permanent magnet 46 to slide rapidly along the arc-shaped guide plate 19 through the slider 20 passing through the through groove 23, approaching the fluid cavity 17. When the permanent magnet 46 is pressed against the outer wall of the fluid cavity 17, the strong magnetic field it generates penetrates the wall and acts on the magnetorheological fluid in the annular sealed cavity between the sleeve 15 and the fluid cavity 17, causing it to instantly change from a liquid to a solid state. This completely locks the sleeve 15 and the fluid cavity 17, which were originally able to rotate relative to each other, thus achieving a rigid connection between the dial 2 and the watch strap 1 and resisting impact inertia. After the impact, the miniature solenoid valve 39 closes, and the drive motor 43 drives the eccentric wheel 44 to rotate. The eccentric wheel 44, through its hinge with the connecting plate 42, pushes the second piston rod 41 to reciprocate in the injection chamber 34, forcing air into the cylinder 32 through the first one-way valve 35 to complete the high-pressure gas storage. At the same time, the drive spring 31 is compressed and stored energy. The entire transmission chain resets, moving the permanent magnet 46 away from the fluid cavity 17. As the permanent magnet 46 moves away, the magnetic field disappears, the magnetorheological fluid returns to a liquid state, and the joint is unlocked.

[0040] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in the present invention, and these should all be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A wearable occupational health data monitoring device for power grid workers, characterized in that: Includes a watch strap (1) and a watch head (2), wherein the watch strap (1) and the watch head (2) are integrated therein; An adaptive constant pressure bonding mechanism is used to drive the strap (1) to expand in a low temperature environment so that the sensor module on the back of the watch maintains constant pressure contact with the wearer's wrist; An inertial trigger joint locking mechanism is used to convert the flexible joint between the flexible head (2) and the strap (1) into a rigid connection when an impact is detected.

2. The wearable occupational health data monitoring device for power grid workers according to claim 1, characterized in that: The adaptive constant pressure fitting mechanism includes an infusion tube (4) embedded inside the watch strap (1), a restraint strap (3) installed on the outside of the watch strap (1), an expansion fitting sleeve (5) connected to the infusion tube (4), an installation cavity (47) installed below the watch head (2), a reservoir cavity (6) installed inside the installation cavity (47), a drive cavity (7) connected to the side of the reservoir cavity (6), a connecting cylinder (8) connected to the side of the drive cavity (7), a pull rod (9) slidably passing through the connecting cylinder (8), and the pull rod (9) passing through one of the drive cavity (7). A piston head (10) adapted to the inner wall of the drive chamber (7) is installed at the end. A bidirectional shape memory actuator (11) is provided on the pull rod (9). A temperature control valve (12) is connected to the liquid storage chamber (6). Rotary fluid connectors (13) are provided on both sides of the meter (2). The rotary fluid connectors (13) are connected to the infusion pipe (4). The liquid storage chamber (6) flows through the temperature control valve (12) and the rotary fluid connector (13) in sequence through the pipeline and is connected to the infusion pipe (4). An injection port (14) is also provided on the liquid storage chamber (6).

3. The wearable occupational health data monitoring device for power grid workers according to claim 2, characterized in that: The inner wall of the connecting cylinder (8) is provided with an axial sliding groove. The end of the pull rod (9) away from the drive cavity (7) is equipped with a limiting plate, and the limiting plate is equipped with a protrusion structure that matches the sliding groove. The protrusion is slidably disposed in the sliding groove. The bidirectional shape memory actuator (11) is a helical spring made of shape memory alloy. One end of it is fixed to the inner wall of the connecting cylinder (8), and the other end is fixed to the limiting plate. A protective shell (45) is provided on the mounting cavity (47). The protective shell (45) is made of permalloy. The inner side of the watch head (2) is electroplated with a nickel-iron permalloy coating. The watch strap (1) is made of low-temperature resistant thermoplastic elastomer.

4. A wearable occupational health data monitoring device for power grid workers according to claim 1 or 3, characterized in that: The deformation of the bidirectional shape memory actuator (11) is configured to be approximately linearly related to the ambient temperature. When the ambient temperature changes from high to low, it generates linear contraction deformation, pulling the piston head (10) into the drive chamber (7) and pressing the working medium in the storage chamber (6) into the expansion sleeve (5) through the infusion tube (4). When the ambient temperature changes from low to high, it generates linear elongation deformation, pushing the piston head (10) out of the drive chamber (7) and drawing the working medium in the expansion sleeve (5) back into the storage chamber (6) through the infusion tube (4).

5. The wearable occupational health data monitoring device for power grid workers according to claim 1, characterized in that: The inertial trigger joint locking mechanism includes a sleeve (15) fixed to the strap (1). One end of the sleeve (15) is rotatably mounted on the mounting cavity (47). A stop worm gear (16) is mounted on the outer wall of the sleeve (15). A sealed bearing (18) is provided on the sleeve (15). A fluid cavity (17) is rotatably mounted on the sleeve (15) through the sealed bearing (18). The fluid cavity (17) is mounted on the side of the mounting cavity (47). An arc-shaped guide plate (19) is mounted on the mounting cavity (47). 19) A slider (20) is slidably mounted on the upper part of the mounting cavity (47). A sleeve plate (21) is mounted on the slider (20). A permanent magnet (46) is embedded in the sleeve plate (21). A toothed ring (22) is rotatably mounted in the middle section of the mounting cavity (47). A through groove (23) is opened on the outer wall of the mounting cavity (47) corresponding to the toothed ring (22). The slider (20) passes through the through groove (23) and is connected to the toothed ring (22). A MEMS accelerometer (40) is also installed in the mounting cavity (47). A motion conversion transmission mechanism and an energy storage and release mechanism are provided.

6. A wearable occupational health data monitoring device for power grid workers according to claim 5, characterized in that: The motion conversion transmission mechanism includes an output gear (24) rotatably installed in the mounting cavity (47), the output gear (24) meshing with a gear ring (22), a first acceleration gear (25) coaxially connected below the output gear (24), a second acceleration gear (26) meshing to the side of the first acceleration gear (25), a rack (27) coaxially connected below the second acceleration gear (26), a guide rod (28) installed in the mounting cavity (47), a sliding sleeve (29) slidably installed on the guide rod (28), a toothed plate (30) meshing with the rack (27) installed on the sliding sleeve (29), and a drive spring (31) sleeved on the guide rod (28).

7. A wearable occupational health data monitoring device for power grid workers according to claim 5, characterized in that: The energy storage and release mechanism includes a cylinder (32) installed in a mounting cavity (47). A first piston rod (33) is slidably disposed in the cylinder (32). One end of the first piston rod (33) is mounted on a sliding sleeve (29). A pressure injection chamber (34) is connected to the side of the cylinder (32), and a first one-way valve (35) is provided at the connection between the cylinder (32) and the pressure injection chamber (34). An air injection pipe (36) is connected to the side of the pressure injection chamber (34), and a second one-way valve (48) is provided on the air injection pipe (36). One end of 36) passes through the mounting cavity (47) and is connected to a dust cover (37); a pressure relief pipe (38) is also connected to the side of the cylinder body (32), a miniature solenoid valve (39) is provided on the pressure relief pipe (38), a second piston rod (41) is provided in the injection cavity (34), a connecting plate (42) is hinged to the tail end of the second piston rod (41), a drive motor (43) is installed in the mounting cavity (47), an eccentric wheel (44) is installed at the output end of the drive motor (43), and the connecting plate (42) is hinged to the eccentric wheel (44).

8. A wearable occupational health data monitoring device for power grid workers according to claim 5, characterized in that: An annular sealing cavity is formed between the sleeve (15) and the fluid cavity (17), and the annular sealing cavity is filled with magnetorheological fluid.

9. A wearable occupational health data monitoring device for power grid workers according to claim 6, characterized in that: One end of the drive spring (31) abuts against the end of the guide rod (28), and the other end abuts against the sliding sleeve (29).

10. A wearable occupational health data monitoring device for power grid workers according to claim 7, characterized in that: The micro solenoid valve (39) is electrically connected to the MEMS accelerometer (40) and is controlled by the output signal of the MEMS accelerometer (40); when the impact signal detected by the MEMS accelerometer (40) exceeds the set threshold, the micro solenoid valve (39) is controlled to open.

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