CN114343678A - Myoelectricity acquisition system and myoelectricity acquisition unit for wireless transmission of human body surface - Google Patents
Myoelectricity acquisition system and myoelectricity acquisition unit for wireless transmission of human body surface Download PDFInfo
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- CN114343678A CN114343678A CN202111516730.3A CN202111516730A CN114343678A CN 114343678 A CN114343678 A CN 114343678A CN 202111516730 A CN202111516730 A CN 202111516730A CN 114343678 A CN114343678 A CN 114343678A
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Abstract
The invention belongs to the field of body surface electromyography acquisition, and particularly relates to a body surface wireless transmission electromyography acquisition system and an electromyography acquisition unit, which comprise body surface electrodes, a plurality of electromyography acquisition units, a data processing unit and a display terminal; the myoelectricity acquisition unit is connected with the body surface electrode in a solid line mode, the myoelectricity acquisition unit is wirelessly connected with the data processing unit through wifi, and the data processing unit is connected with the display terminal through a USB line. The method has the advantages of convenient use steps and no need of connecting a plurality of entity lines. The used distance is increased and is more flexible than a physical line. The myoelectricity acquisition unit and the data processing unit carry out data double backup, and original data are stored, so that data loss caused by accidents can be avoided. The acquisition channel can be flexibly selected according to the requirement.
Description
Technical Field
The invention belongs to the field of body surface electromyography acquisition, and particularly relates to a human body surface wireless transmission electromyography acquisition system and a human body surface wireless transmission electromyography acquisition unit.
Background
The multichannel wireless transmission surface electromyography acquisition system (sEMG) is characterized in that surface electrodes are pasted on the surface of skin where active muscles are located to acquire bioelectricity signals of muscle activity, and then recorded time sequence signals of voltage are amplified and displayed, so that the multichannel wireless transmission surface electromyography acquisition system has good real-time performance, locality and functionality. sEMG is a detection means and method capable of objectively reflecting bioelectrical activity of a neuromuscular system, and is mainly characterized by noninjurious and multi-target detection and consistency of signal characteristic change with intrinsic physiological and pathological changes. In the aspect of neuromuscular function evaluation, sEMG can accurately describe local muscle activation time, activation level, functional state and the interrelation with human body links and overall movement, can quantitatively describe the time sequence relation of the detected muscle group activity, and can perform neuromuscular synergy analysis, in the diagnosis of neuromuscular system diseases, sEMG signal and image analysis technology is widely applied to dyskinesia evaluation of diseases including chronic lumbago, neck pain, Parkinson disease, infantile cerebral palsy, spinal cord injury and the like and auxiliary diagnosis of related diseases, for example, clinical auxiliary evidence and the like are provided for the diagnosis of chronic nonspecific lumbago through the detection of lumbar vertebra stable muscle ' bend, relaxation and ' feedforward control weakening ' phenomena of suspected patients with chronic nonspecific lumbago. In addition, sEMG can be combined with other physical detection technologies (such as electroencephalogram, imaging, force detection, and the like) and further applied to functional evaluation of central activation and control, peripheral nerve conduction velocity, spinal cord motor control, muscle spasm, and the like, thereby playing an important role in disease diagnosis and functional evaluation.
The prior problems are that: for data transmission, whether wired transmission or wireless transmission has data packet loss and errors, a common solution is to process the data errors and losses through a data check code determination and retransmission mechanism. However, the contradictory point to this processing method is that data check and retransmission may cause a decrease in data transmission rate, especially in some application scenarios with high real-time requirement.
In addition, the current myoelectric acquisition unit has extremely high cost, and the safety of the acquisition unit when the acquisition unit is used and placed is a problem to be considered, and the problems comprise the following:
1. the waterproof and dustproof problems of the components in the housing during charging and placing.
2. The waterproof dustproof short circuit problem of preventing of battery charging mouth.
3. In the process of collecting the muscle electrical signals, if the time is long, the contact part of the collecting unit and the skin is usually whitened due to local hypoxia.
4. In the process of electromyographic signal acquisition, the acquisition unit is used for solving the problems of water and dust prevention of the radiating holes.
5. The reference electrode of the acquisition unit is easy to fall off in the use process through the contact mode of the silica gel sheet and the skin adhesion.
The invention designs a myoelectricity acquisition system and a myoelectricity acquisition unit for human body surface wireless transmission, which solve the problems.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention discloses a myoelectricity acquisition system and a myoelectricity acquisition unit for wireless transmission on the surface of a human body, which are realized by adopting the following technical scheme.
In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention conventionally use, which are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, or be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
A myoelectricity collection system for wireless transmission on the surface of a human body comprises a body surface electrode, a plurality of myoelectricity collection units, a data processing unit and a display terminal; the myoelectricity acquisition unit is connected with the body surface electrode in a solid line, the myoelectricity acquisition unit is wirelessly connected with the data processing unit through wifi, and the data processing unit is connected with the display terminal through a USB line; the body surface electrodes are not connected with each other, and the myoelectricity acquisition units are not connected with each other.
The myoelectric acquisition unit comprises a cortix-m 4 kernel MCU, a myoelectric signal acquisition module, a data storage module, a wireless transmission module (WiFi), a battery power supply module, a battery charging module, an electric quantity detection module, a nine-axis inertial measurement sensor module and an interaction indication module, wherein the myoelectric signal acquisition module comprises a differential amplification circuit, a filter circuit, an AD conversion unit and a right leg driving circuit; the battery power supply module comprises a group of linear lithium batteries and a power supply circuit, the nine-axis inertial measurement sensor module comprises a three-axis gyroscope sensor, a three-axis acceleration sensor and a three-axis magnetic induction sensor, and the interaction indication module comprises an LED indication circuit and a key interaction circuit; the data processing unit comprises a data storage module, a wireless transmission module (WiFi), a power supply module and a USB interface module.
The kertex-m 4 kernel MCU is specifically STM32L496QGI6 and is used as each module in the central processing unit control myoelectricity acquisition unit; the electromyographic signal acquisition module is specifically an ADS1294 integrated bioelectricity signal acquisition analog front-end chip, and the differential amplification circuit is 4 independent differential input program-controlled gain amplifiers for amplifying the electromyographic signals acquired by the body surface electrodes; the filter circuit is used for removing power frequency interference in the electromyographic signal acquisition process; the AD conversion unit is used for carrying out analog-to-digital conversion on the electromyographic signals, converting the analog signals into digital signals and sending the digital signals to the MCU, and the MCU transmits the digital signals to the data processing unit in real time through controlling the wireless transmission module (WIFI).
The data storage module is used for storing the acquired original electromyographic signals, backing up data and reading the data stored in the data storage module through the MCU; the battery power supply module provides stable working voltage for the whole circuit; the battery charging module can perform cycle charging on the lithium battery; the electric quantity detection module can monitor the electric quantity of the battery, prevent the battery capacity from being too low and influence the performance of the battery, and can guide a user to charge in time when the electric quantity is low.
The indicating module comprises an LED lamp and a key, the LED lamp is an RGB lamp, various colors can be displayed, and the key can allow single click, double click, long press and other operations to realize different functions; the USB interface module provides a physical connection interface for a USB line to realize data transmission between the data processing unit and the display terminal; the group of linear batteries, particularly 3.7V800mA lithium batteries, is connected with a power supply circuit.
As a further improvement of the technology, the myoelectricity acquisition unit used by the myoelectricity acquisition system for the wireless transmission on the body surface of a human body is characterized in that a heat dissipation mechanism for dissipating heat in the myoelectricity acquisition unit is arranged at the top in a shell A of the myoelectricity acquisition unit; the heat dissipation mechanism opens the two air suction grooves A at the top of the shell A when the heat dissipation mechanism operates and closes the two heat dissipation grooves A when the heat dissipation mechanism stops operating; the bottom of the shell B of the myoelectricity acquisition unit is provided with an adsorption mechanism which is used for fixing the myoelectricity acquisition unit on the body surface and electrically connecting the body surface with three reference electrodes on the circuit board B in the myoelectricity acquisition unit; the adsorption mechanism opens a plurality of heat dissipation grooves A at the bottom of the shell B of the myoelectricity acquisition unit in the working state of the adsorption mechanism, and closes the heat dissipation grooves A in the non-working state of the adsorption mechanism; and a charging transmission interface mechanism is arranged in the tail mounting grooves A of the shell A and the shell B of the myoelectricity acquisition unit and is electrically connected with a corresponding module unit on the circuit board A in the myoelectricity acquisition unit.
As a further improvement of the technology, the heat dissipation mechanism comprises a fixed shaft, a mounting seat, a ring sleeve, a volute spring, a fixture block A, a fixture block B, a motor, a fan, a gear A, a gear B, a rotating shaft A and a sealed rotating ring, wherein the fixed shaft is mounted at the top of the inner part of the shell A of the myoelectricity acquisition unit; a ring sleeve arranged on the mounting seat is nested and rotated on the fixed shaft, and a fixture block B arranged on the fixed shaft is matched with a fixture block A arranged on the ring sleeve; the fixed shaft is nested with a volute spring which can rotationally reset the ring sleeve; a motor with an output shaft and a fixed shaft which have the same central axis is fixed on the mounting seat, and a fan is mounted on the output shaft of the motor; the top in the shell A of the myoelectricity acquisition unit is provided with a circular groove A communicated with the two air suction grooves A, and a rotating shaft A in transmission connection with the ring sleeve is in rotating fit in the circular groove A; the end face of the rotating shaft A is provided with two air suction grooves B which correspond to the air suction grooves A one by one.
As a further improvement of the technology, the volute spring is positioned in a ring groove B on the inner wall of the ring sleeve; one end of the volute spring is connected with the inner wall of the ring groove B, and the other end of the volute spring is connected with the fixed shaft; the clamping block A is arranged in a ring groove C on the inner wall of the ring sleeve, and the clamping block B is movable in the ring groove C; a sealing rotating ring matched with the rotating shaft A is arranged in a ring groove A on the inner wall of the circular groove A; the ring sleeve is provided with a gear A which is meshed with a gear B arranged on the rotating shaft A.
As a further improvement of the technology, the charging transmission interface mechanism comprises a fixed seat, a contact A, a spring A, a contact sleeve A, a contact B, a spring B, a mandril, a plug and a contact sleeve B, wherein the fixed seat is hermetically arranged in a shell A of the myoelectricity acquisition unit and a mounting groove A at the tail part of the shell B; one end of the fixed seat is provided with a slot A, and the other end of the fixed seat is provided with four sliding chutes C; the inner end face of the slot A is provided with four slots B which are in one-to-one correspondence with the sliding grooves C; the inner end surface of the slot B is provided with a mounting slot B which is axially communicated with the corresponding slot C; a contact sleeve A is fixedly sealed in each mounting groove B, a contact B is axially matched with the contact A in a sliding manner, and a spring B for resetting the contact B is mounted in a ring groove D in the inner wall of the mounting groove B; a contact A which is electrically connected with the circuit board A in the myoelectricity acquisition unit and is matched with the corresponding contact B is axially slid in each sliding groove C, and a spring A for resetting the contact A is nested on the contact A; the plug which is in splicing fit with the slot A is provided with four plug bushes B which are in one-to-one corresponding fit with the plug bushes A; the end face of the ring groove D is communicated with the end face of the corresponding slot B through two sliding grooves B, and an ejector rod which is fixedly connected with the contact B and matched with the end face of the corresponding contact sleeve B is arranged in each sliding groove B in a sliding mode.
As a further improvement of the technology, a limiting ring for limiting the sliding amplitude of the contact A is arranged on the contact A, and the contact A is electrically connected with a corresponding module unit on a circuit board A in the myoelectricity acquisition unit through a lead; the contact B is provided with a ring plate which moves in the corresponding ring groove D; the spring A is a compression spring; the spring A is positioned in the annular groove E of the inner wall of the corresponding chute C; one end of the spring A is connected with the inner wall of the corresponding chute E, and the other end of the spring A is connected with the annular protrusion on the corresponding contact A; the spring B is an extension spring; one end of the spring B is connected with the end face of the corresponding ring groove D, and the other end of the spring B is connected with the corresponding ring plate.
As a further improvement of the technology, the adsorption mechanism comprises copper columns, a spring C, a round bar, a sucker, a copper inclined plate, a copper contact piece, a driving block, a driving rod, a rack, a gear C, a rotating shaft B, a turbine, a swivel base A, a worm and a torsion wheel, wherein the three copper columns respectively slide in three sliding chutes A at the bottom of a middle shell B of the myoelectricity acquisition unit in a sealing manner along the direction vertical to the body surface; the three copper columns are respectively and electrically connected with three reference electrodes on the circuit board B; each copper column is nested with a spring C for resetting the copper column; the tail end of each copper column is provided with a sucking disc which is matched with the body surface and is matched with the conical groove on the inner wall of the corresponding sliding groove A, and a copper contact sheet which is positioned in the sucking disc and is matched with the body surface is connected with the corresponding copper column through a copper inclined plate which resets the copper contact sheet; and a conical ring for ensuring the gap between the body surface and the shell B is arranged at the notch of each conical groove.
A driving rod is matched with the bottom in the shell B of the myoelectricity acquisition unit in a sliding manner, and a plurality of heat dissipation grooves B on the driving rod are matched with the heat dissipation grooves A at the bottom of the shell B of the myoelectricity acquisition unit in a one-to-one correspondence manner; three driving blocks which correspond to the copper columns one to one are mounted on the driving rod A, and driving inclined planes on the driving blocks are matched with round rods mounted on the corresponding copper columns; a rotating shaft B is rotatably matched on a rotating seat A at the bottom in a shell B of the myoelectricity acquisition unit, and a gear C arranged on the rotating shaft B is meshed with a rack arranged on the side wall of the driving rod; a worm is rotationally matched in a circular groove B in the side wall of a shell B of the myoelectricity acquisition unit, and the worm is meshed with a turbine arranged on a rotating shaft B; the exposed end of the worm is provided with a torsion wheel.
As a further improvement of the technology, the driving rod slides between two guide rails at the bottom in the shell B of the myoelectricity acquisition unit; the spring C is an extension spring; one end of the spring C is connected with the bottom in the shell B of the myoelectricity acquisition unit, and the other end of the spring C is connected with a tension spring ring arranged on a corresponding copper column; a rotary seat B which is in rotary fit with the worm is arranged at the bottom in the shell B of the myoelectricity acquisition unit so as to increase the strength of the worm.
Compared with the traditional body surface myoelectricity acquisition equipment, the method has the advantages that the use steps are convenient and fast, and a plurality of entity lines are not required to be connected. The used distance is increased and is more flexible than a physical line. The myoelectricity acquisition unit and the data processing unit carry out data double backup, and original data are stored, so that data loss caused by accidents can be avoided. The acquisition channel can be flexibly selected according to the requirement.
The charging transmission interface mechanism can be automatically disconnected from the relevant module units on the circuit board A in the myoelectricity acquisition unit when the charging transmission interface mechanism is not charged, so that the four contacts A in the charging transmission interface mechanism are prevented from being communicated with each other due to water inflow, and the circuit board A in the myoelectricity acquisition unit is prevented from being burnt out due to short circuit caused by the fact that the four contacts A in the charging transmission interface mechanism are communicated with each other.
According to the myoelectricity collecting unit, the air suction groove A on the shell A and the heat dissipation groove A on the shell B are in a closed state when the myoelectricity collecting unit is in an idle state, so that the phenomenon that water or dust enters to cause short circuit of components on the circuit board A or the circuit board B is avoided, and the dustproof and waterproof functions are fully exerted. According to the myoelectricity collection unit, the air suction groove A on the shell A and the heat dissipation groove A on the shell B are in an open state when the myoelectricity collection unit is in a use state, so that the components in the myoelectricity collection unit can be effectively dissipated.
Compared with the traditional silica gel sheet sticking mode, the adsorption mechanism can complete the tight fixation of the silica gel sheet and the body surface through the sucker, and the phenomenon that the traditional silica gel sheet needs to be replaced because the viscosity is weakened due to repeated use can not occur in the adsorption mechanism.
In addition, in the working state, a certain gap is formed between the shell B and the body surface due to the three conical rings, so that the phenomenon that the body surface is whitened due to oxygen deficiency caused by long-time extrusion contact with the shell B is avoided, and the comfortable experience is better.
The invention has simple structure and better use effect.
Drawings
Fig. 1 is an overall schematic view of the present invention from two perspectives.
Fig. 2 is a schematic overall cross-sectional view from two perspectives of the present invention.
Fig. 3 is a schematic cross-sectional view of the heat dissipation mechanism and the housing a.
Fig. 4 is a schematic cross-sectional view of the engagement between the latch a and the latch B.
FIG. 5 is a cross-sectional view of the attachment mechanism, the housing B and the reference electrode.
Fig. 6 is a schematic cross-sectional view of the suction mechanism and the housing B from two viewing angles.
Fig. 7 is a schematic sectional view of the case a.
Fig. 8 is a schematic sectional view of the case B and its.
Fig. 9 is a schematic view of the adsorption mechanism.
Fig. 10 is a schematic view of a heat dissipation mechanism.
FIG. 11 is a cross-sectional view of the mounting base and the rotating shaft A.
Fig. 12 is a schematic view of a charge transfer interface mechanism.
Fig. 13 is a schematic cross-sectional view of the charging transmission interface mechanism from two perspectives.
Fig. 14 is a cross-sectional view of the fixing base from two viewing angles.
FIG. 15 is a system framework diagram.
Fig. 16 is a schematic diagram of a surface myoelectricity collection unit frame.
FIG. 17 is a data cell framework diagram.
Number designation in the figures: 1. a myoelectricity collection unit; 3. a shell A; 4. mounting grooves A; 5. a suction groove A; 6. a circular groove A; 7. a ring groove A; 8. a shell B; 10. a heat dissipation groove A; 11. a chute A; 12. a conical groove; 13. a circular groove B; 14. a heat dissipation mechanism; 15. a fixed shaft; 16. a mounting seat; 17. sleeving a ring; 18. a ring groove B; 19. a ring groove C; 20. a volute spring; 21. a clamping block A; 22. a clamping block B; 23. a motor; 24. a fan; 25. a gear A; 26. a gear B; 27. a rotating shaft A; 28. a suction groove B; 29. sealing the rotating ring; 30. a lithium battery; 31. a circuit board A; 32. a circuit board B; 33. a wire; 34. a charging transmission interface mechanism; 35. a fixed seat; 36. a slot A; 37. mounting grooves B; 38. a ring groove D; 39. a slot B; 40. a chute B; 41. a chute C; 42. a ring groove E; 43. a contact A; 44. a ring protrusion; 45. a spring A; 46. a limiting ring; 47. contacting the sleeve A; 48. a contact B; 49. a ring plate; 50. a spring B; 51. a top rod; 52. a plug; 53. contacting the sleeve B; 54. an adsorption mechanism; 55. a copper pillar; 56. a spring C; 57. a tension spring ring; 58. a round bar; 59. a suction cup; 60. a copper sloping plate; 61. a copper contact; 62. a drive block; 63. a drive ramp; 64. a drive rod; 65. a heat dissipation groove B; 66. a guide rail; 67. a rack; 68. a gear C; 69. a rotating shaft B; 70. a turbine; 71. a transposition A; 72. a worm; 73. a torsion wheel; 74. a transposable B; 75. a reference electrode; 76. a conical ring; 77. and a button is switched on and off.
Detailed Description
The drawings are schematic illustrations of the implementation of the present invention to facilitate understanding of the principles of structural operation. The specific product structure and the proportional size are determined according to the use environment and the conventional technology.
As shown in fig. 1 and 15, the myoelectric monitoring device comprises a body surface electrode, a plurality of myoelectric acquisition units, a data processing unit and a display terminal; the myoelectricity acquisition unit is connected with the body surface electrode in a solid line, the myoelectricity acquisition unit is wirelessly connected with the data processing unit through wifi, and the data processing unit is connected with the display terminal through a USB line; the body surface electrodes are not connected with each other, and the myoelectricity acquisition units are not connected with each other.
As shown in fig. 16, the myoelectric acquisition unit includes a cortix-m 4 kernel MCU, a myoelectric signal acquisition module, a data storage module, a wireless transmission module (WiFi), a battery power supply module, a battery charging module, an electric quantity detection module, a nine-axis inertial measurement sensor module, and an interactive indication module, wherein the myoelectric signal acquisition module includes a differential amplification circuit, a filter circuit, an AD conversion unit, and a right leg driving circuit; the battery power supply module comprises a group of linear lithium batteries 30 and a power supply circuit, the nine-axis inertial measurement sensor module comprises a three-axis gyroscope sensor, a three-axis acceleration sensor and a three-axis magnetic induction sensor, and the interaction indication module comprises an LED indication circuit and a key interaction circuit; as shown in fig. 17, the data processing unit includes a data storage module, a wireless transmission module (WiFi), a power supply module, and a USB interface module.
The kertex-m 4 kernel MCU is specifically STM32L496QGI6 and is used as each module in the central processing unit control myoelectricity acquisition unit; the electromyographic signal acquisition module is specifically an ADS1294 integrated bioelectricity signal acquisition analog front-end chip, and the differential amplification circuit is 4 independent differential input program-controlled gain amplifiers for amplifying the electromyographic signals acquired by the body surface electrodes; the filter circuit is used for removing power frequency interference in the electromyographic signal acquisition process; the AD conversion unit is used for carrying out analog-to-digital conversion on the electromyographic signals, converting the analog signals into digital signals and sending the digital signals to the MCU, and the MCU transmits the digital signals to the data processing unit in real time through controlling the wireless transmission module (WIFI).
The data storage module is used for storing the acquired original electromyographic signals, backing up data and reading the data stored in the data storage module through the MCU; the battery power supply module provides stable working voltage for the whole circuit; the battery charging module can perform cycle charging on the lithium battery 30; the electric quantity detection module can monitor the electric quantity of the battery, prevent the battery capacity from being too low and influence the performance of the battery, and can guide a user to charge in time when the electric quantity is low.
The indicating module comprises an LED lamp and a key, the LED lamp is an RGB lamp, various colors can be displayed, and the key can allow single click, double click, long press and other operations to realize different functions; the USB interface module provides a physical connection interface for a USB line to realize data transmission between the data processing unit and the display terminal; the group of linear batteries, specifically the 3.7V800mA lithium battery 30, is connected to a power supply circuit.
As shown in fig. 2, 3 and 7, a heat dissipation mechanism 14 for dissipating heat inside is installed at the top inside a shell a3 of the myoelectric acquisition unit 1; the heat dissipation mechanism 14 opens the two air suction grooves a5 at the top of the case A3 when it is operating and closes the two heat dissipation grooves a10 when it is not operating; as shown in fig. 2 and 5, the bottom of the shell B8 of the myoelectricity collection unit 1 is provided with an adsorption mechanism 54 which fixes the myoelectricity collection unit 1 on the body surface and electrically connects the body surface with the three reference electrodes 75 on the circuit board B32 in the myoelectricity collection unit 1; as shown in fig. 6 and 8, the adsorption mechanism 54 is opened to a plurality of heat dissipation grooves a10 at the bottom of the shell B8 of the myoelectricity collection unit 1 in the working state thereof, and the adsorption mechanism 54 is closed to the heat dissipation grooves a10 in the non-working state thereof; as shown in fig. 2, 7 and 8, the charging transmission interface mechanism 34 is installed in the tail installation groove a4 of the shell A3 and the shell B8 of the myoelectric acquisition unit 1, and the charging transmission interface mechanism 34 is electrically connected with the corresponding module unit on the circuit board a31 in the myoelectric acquisition unit 1.
As shown in fig. 10, the heat dissipation mechanism 14 includes a fixed shaft 15, a mounting seat 16, a ring sleeve 17, a volute spring 20, a latch a21, a latch B22, a motor 23, a fan 24, a gear a25, a gear B26, a rotating shaft a27, and a sealed rotating ring 29, wherein as shown in fig. 3, 4, and 11, the fixed shaft 15 is mounted on the top inside a housing A3 of the myoelectricity collection unit 1; the ring sleeve 17 arranged on the mounting seat 16 is nested and rotated on the fixed shaft 15, and the fixture block B22 arranged on the fixed shaft 15 is matched with the fixture block A21 arranged on the ring sleeve 17; the fixed shaft 15 is nested with a volute spring 20 which can rotationally reset the ring sleeve 17; a motor 23 with an output shaft having the same central axis with the fixed shaft 15 is fixed on the mounting seat 16, and a fan 24 is mounted on the output shaft of the motor 23; as shown in fig. 3 and 7, the top of the shell A3 of the myoelectricity collecting unit 1 is provided with a circular groove a6 communicated with two air suction grooves a5, and a rotating shaft a27 in transmission connection with the ring sleeve 17 is rotatably matched in the circular groove a 6; the end face of the rotating shaft A27 is provided with two air suction grooves B28 which correspond to the air suction grooves A5 one by one.
As shown in fig. 3, 4 and 7, the volute spring 20 is located in a ring groove B18 on the inner wall of the ring 17; one end of the volute spring 20 is connected with the inner wall of the ring groove B18, and the other end is connected with the fixed shaft 15; the fixture block A21 is arranged in a ring groove C19 on the inner wall of the ring sleeve 17, and the fixture block B22 is movable in the ring groove C19; a sealing rotary ring 29 matched with the rotating shaft A27 is arranged in a ring groove A7 on the inner wall of the circular groove A6; the ring 17 is provided with a gear A25, and a gear A25 is meshed with a gear B26 arranged on a rotating shaft A27.
As shown in fig. 12 and 13, the charging transmission interface mechanism 34 includes a fixing seat 35, a contact a43, a spring a45, a contact sleeve a47, a contact B48, a spring B50, a push rod 51, a plug 52, and a contact sleeve B53, wherein as shown in fig. 2, 7, and 8, the fixing seat 35 is hermetically installed in a shell A3 and a shell B8 tail installation groove a4 of the myoelectricity acquisition unit 1; as shown in fig. 14, the fixing base 35 has a slot a36 at one end and four sliding slots C41 at the other end; the inner end face of the slot A36 is provided with four slots B39 which are in one-to-one correspondence with the sliding slots C41; the inner end surface of the slot B39 is provided with a mounting slot B37 which is axially communicated with the corresponding slot C; as shown in fig. 13, a contact sleeve a47 is fixedly and hermetically mounted in each mounting groove B37, a contact B48 is axially and slidably fitted in the contact sleeve a47, and a spring B50 for restoring the contact B48 is mounted in a ring groove D38 on the inner wall of the mounting groove B37; as shown in fig. 2 and 13, a contact a43 electrically connected with a circuit board a31 in the myoelectricity acquisition unit 1 and matched with a corresponding contact B48 is axially slid in each sliding groove C41, and a spring a45 for resetting the contact a43 is nested on the contact a 43; as shown in fig. 13, four plug bushes B, which are in one-to-one correspondence with the plug bushes a, are mounted on the plug 52, which is in plug-in fit with the slot a 36; the end face of the ring groove D38 is communicated with the end face of the corresponding slot B39 through two sliding grooves B40, and a push rod 51 fixedly connected with the contact B48 and matched with the end face of the corresponding contact sleeve B53 is arranged in each sliding groove B40 in a sliding mode.
As shown in fig. 13 and 14, a limiting ring 46 for limiting the sliding amplitude of the contact a43 is mounted on the contact a43, and the contact a43 is electrically connected with a corresponding module unit on a circuit board a31 in the myoelectricity collection unit 1 through a lead 33; the contact B48 is provided with a ring plate 49, and the ring plate 49 moves in the corresponding ring groove D38; the spring A45 is a compression spring; the spring A45 is positioned in a ring groove E42 on the inner wall of the corresponding chute C41; one end of the spring A45 is connected with the inner wall of the corresponding chute E, and the other end is connected with the annular protrusion 44 on the corresponding contact A43; the spring B50 is an extension spring; one end of the spring B50 is connected with the end face of the corresponding ring groove D38, and the other end is connected with the corresponding ring plate 49.
As shown in fig. 9, the adsorption mechanism 54 includes a copper column 55, a spring C56, a round bar 58, a suction cup 59, a copper inclined plate 60, a copper contact piece 61, a driving block 62, a driving rod 64, a rack 67, a gear C68, a rotating shaft B69, a turbine 70, a rotating seat a71, a worm 72, and a torsion wheel 73, wherein as shown in fig. 5 and 8, the three copper columns 55 respectively slide in three sliding grooves a11 at the bottom of a housing B8 in the myoelectricity collection unit 1 in a sealing manner along a direction perpendicular to the body surface; the three copper pillars 55 are electrically connected to three reference electrodes 75 on the circuit board B32, respectively; each copper column 55 is nested with a spring C56 for resetting the copper column; the tail end of each copper column 55 is provided with a sucking disc 59 which is matched with the body surface and is matched with the corresponding chute A11 inner wall taper groove 12, and a copper contact sheet 61 which is positioned in the sucking disc 59 and is matched with the body surface is connected with the corresponding copper column 55 through a copper inclined plate 60 which resets the copper contact sheet; the notch of each conical groove 12 is provided with a conical ring 76 which ensures the clearance between the body surface and the shell B8.
As shown in fig. 5, 6 and 9, the drive rod 64 is slidably fitted at the bottom inside the shell B8 of the myoelectricity collection unit 1, and a plurality of heat dissipation grooves B65 on the drive rod 64 are correspondingly fitted with the heat dissipation grooves a10 at the bottom of the shell B8 of the myoelectricity collection unit 1; three driving blocks 62 which are in one-to-one correspondence with the copper columns 55 are installed on the driving rod 64A, and driving inclined planes 63 on the driving blocks 62 are matched with the round rods 58 installed on the corresponding copper columns 55; a rotating shaft B69 is rotatably matched on a rotating seat A71 at the bottom in a shell B8 of the myoelectricity acquisition unit 1, and a gear C68 arranged on the rotating shaft B69 is meshed with a rack 67 arranged on the side wall of the driving rod 64; a worm 72 is rotationally matched in a circular groove B13 in the side wall of a shell B8 of the myoelectricity acquisition unit 1, and the worm 72 is meshed with a turbine 70 arranged on a rotating shaft B69; the exposed end of the worm 72 is fitted with a torsion wheel 73.
As shown in fig. 5 and 6, the driving rod 64 slides between two guide rails 66 at the bottom inside the shell B8 of the myoelectric acquisition unit 1; the spring C56 is an extension spring; one end of a spring C56 is connected with the bottom in the shell B8 of the myoelectricity acquisition unit 1, and the other end is connected with a tension spring ring 57 arranged on the corresponding copper column 55; a rotary seat B74 which is rotatably matched with the worm 72 is arranged at the bottom in the shell B8 of the myoelectricity acquisition unit 1 so as to increase the strength of the worm 72.
The motor 23 of the present invention is known in the art.
The working process of the invention is as follows: before the myoelectric muscle measuring instrument is used, a body surface electrode is correctly connected with a myoelectric acquisition unit, the body surface electrode is adhered to a muscle group to be measured, the myoelectric acquisition unit is controlled to start working through a display terminal, a myoelectric signal acquisition module can acquire myoelectric signals of a human body and amplify and filter the data, an MCU (micro control unit) acquires the myoelectric data processed by the myoelectric signal acquisition module and transmits the data to a data processing unit through a wireless transmission module in real time, and meanwhile, a data storage module can store the myoelectric data. After receiving the myoelectric data sent by one or more myoelectric acquisition units, the data processing unit analyzes and repackages the data, then uniformly sends the received data to the display terminal through the USB interface module, and meanwhile, the data processing unit stores the myoelectric data in the data storage unit for secondary backup. The display terminal analyzes and processes the data after receiving the myoelectric data, and displays the waveform, information and the like required by the user.
The working flows of the heat dissipation mechanism 14 and the adsorption mechanism 54 are as follows: in the initial state, the volute spring 20 is in a compressed state, the latch A21 abuts against the latch B22, the air suction groove B28 on the rotating shaft A27 is staggered with the air suction groove A5 on the shell A3, and the rotating shaft A27 is in a closed state relative to the two air suction grooves A5. Three springs C56 in the suction mechanism 54 are all in a stretched state, the suction cups 59 protrude out of the corresponding conical rings 76, each circular rod 58 is pressed against the driving rod 64, the heat dissipation grooves B65 on the driving rod 64 are staggered with the heat dissipation grooves a10 on the shell B8, and the driving rod 64 is in a closed state with respect to the heat dissipation grooves a10 on the shell B8.
The invention is pressed against the body surface, three suckers 59 in the adsorption mechanism 54 tightly press against the body surface and tightly adsorb the skin of the body surface in a mode of extruding air, the copper contact sheet 61 in the suckers 59 tightly presses against the skin of the body surface, and the copper inclined plate 60 connected with the copper contact sheet 61 is elastically deformed. Then, the torsion wheel 73 is rotated, the torsion wheel 73 drives the driving rod 64 to slide on the bottom in the shell B8 through the worm 72, the worm wheel 70, the rotating shaft B69 and the rack 67, and the driving rod 64 drives the driving inclined planes 63 on the three driving blocks 62 to start to interact with the corresponding round rods 58. The driving block 62 moving synchronously with the driving rod 64 drives the round rods 58 to move vertically upwards along the driving inclined plane 63, the three round rods 58 respectively drive the corresponding copper columns 55 to move upwards in the sliding grooves A11, the copper columns 55 drive the body surface skin to move towards the conical grooves 12 through the sucking discs 59, and finally the three conical rings 76 on the shell B8 are tightly pressed against the body surface. When the circular rod 58 moves to the uppermost end of the driving block 62, the three conical rings 76 are fully pressed against the body surface and the suction fixation of the invention on the body surface is realized, and the three springs C56 are further stretched. At this time, the turning of the torsion wheel 73 is stopped. The three conical rings 76 enable a certain gap to be formed between the body surface and the shell B8, the body surface is guaranteed not to block the heat dissipation groove A10 which is opened on the shell B8, continuous and effective heat dissipation is facilitated in the working state of the heat dissipation device, meanwhile, the shell B8 is guaranteed not to abut against the body surface, the phenomenon that the skin of the body surface is lack of oxygen and whitened due to long-time tight abutting against by the shell B8 is avoided, and the use experience of a user is more comfortable.
Then, the switch button 77 is pressed to start the operation of the present invention, after the switch button 77 is pressed to start the operation of the present invention, the motor 23 starts to operate, the motor 23 drives the fan 24 to rotate rapidly, and simultaneously, the reaction force of the fan 24 drives the housing of the motor 23 and the mounting base 16 to rotate relative to the fixed shaft 15 in the direction opposite to the rotation of the fan 24, and the volute spring 20 is further compressed. The mounting seat 16 drives the rotating shaft A27 to rotate through the gear A25 and the gear B26. When the elastic force of the volute spring 20 is balanced with the reaction force of the fan 24, the rotation of the mount 16 with respect to the fixed shaft 15 is stopped, and the two suction grooves B28 of the rotation shaft a27 are just opposite to the two suction grooves a5 of the housing A3, thereby opening the two suction grooves a 5.
The fan 24 rotating fast discharges the heat generated by the operation of the internal components of the present invention through the opened heat dissipation groove a10 and simultaneously sucks new cool air into the case A3 and the case B8 through the opened air suction groove a5, thereby achieving effective heat dissipation of the inside of the present invention.
When the use of the present invention is finished, the switch button 77 is pressed to stop the operation of the present invention, the motor 23 stops operating, the fan 24 stops rotating, the mounting seat 16 drives the motor 23 and the fan 24 to rotate and reset relative to the fixed shaft 15 under the reset action of the volute spring 20, and the fixture block a21 and the fixture block B22 are pressed against each other again. Meanwhile, the mounting seat 16 drives the rotating shaft A27 to rotate reversely through the gear A25 and the gear B26, the air suction groove B28 on the rotating shaft A27 is staggered with the air suction groove A5 on the shell A3 again, and the air suction groove A5 is closed, so that water and dust are prevented from entering through the air suction groove A5 during the period of nonuse of the invention.
Then, the torsion wheel 73 is rotated reversely, the torsion wheel 73 drives the driving rod 64 to slide back and return in the shell B8 through a series of transmission, the driving rod 64 drives the three driving blocks 62 to return synchronously, and the three round rods 58 reach the driving rod 64 through the driving inclined surfaces 63 on the corresponding driving blocks 62 under the return action of the corresponding springs C56. The heat sink B65 on the actuator lever 64 is again staggered from the heat sink a10 on the housing B8 and closes the heat sink a10 to prevent ingress of water and dust through the heat sink a10 when the present invention is not in use. At the same time, the three copper cylinders 55 respectively drive the corresponding suction cups 59 to protrude out of the cone rings 76 and end the pressing of the cone against the body surface. Then the invention is pulled out of the body surface.
The working process of the charging transmission interface mechanism 34 is as follows: when the charging is not carried out, the four contacts A43 are respectively away from the corresponding contacts B48 by a certain distance, so that the damage of components in the charging socket caused by short circuit due to the fact that a large amount of water enters the slot A36 to enable the four contact sleeves A47 to be mutually connected when the charging socket is idle is avoided. Spring A45 is in a natural state and spring B50 is in a stretched state.
When the charging is needed to transmit data, the plug 52 is inserted into the slot a36, the four contact sleeves B53 are respectively sleeved on the corresponding contact sleeves a, and the four contact sleeves B drive the corresponding contacts B48 to approach the corresponding contacts a43 through the corresponding two push rods 51, so that the contact between the contact a43 and the contact B48 is finally completed. The four springs B50 are further extended and the four springs a45 are compressed. The compressed spring a45 ensures that the corresponding contact a43 can make effective contact with the corresponding contact B48, ensuring electrical connection during charge transfer.
When the charging transmission is finished, the plug 52 is pulled out of the slot a 36.
In conclusion, the beneficial effects of the invention are as follows: the method has the advantages of convenient use steps and no need of connecting a plurality of entity lines. The used distance is increased and is more flexible than a physical line. The myoelectricity acquisition unit and the data processing unit carry out data double backup, and original data are stored, so that data loss caused by accidents can be avoided. The acquisition channel can be flexibly selected according to the requirement.
The charging transmission interface mechanism 34 of the invention can be automatically disconnected from the relevant module unit on the circuit board A31 in the myoelectricity acquisition unit 1 when not charging, so that the four contacts A43 in the charging transmission interface mechanism 34 are prevented from being communicated with each other due to water inflow, and the circuit board A31 in the myoelectricity acquisition unit 1 is prevented from being burnt out due to short circuit caused by the communication of the four contacts A43 in the charging transmission interface mechanism 34.
According to the invention, the air suction groove A5 on the shell A3 and the heat dissipation groove A10 on the shell B8 in the myoelectricity acquisition unit 1 are in a closed state when the myoelectricity acquisition unit is in an idle state, so that the phenomenon that water or dust enters to cause short circuit of components on the circuit board A31 or the circuit board B32 is avoided, and the dustproof and waterproof functions are fully exerted. According to the myoelectricity acquisition unit, the air suction groove A5 on the shell A3 and the heat dissipation groove A10 on the shell B8 in the myoelectricity acquisition unit 1 are in an open state when the myoelectricity acquisition unit is in a use state, so that the internal components of the myoelectricity acquisition unit 1 can be effectively dissipated.
Compared with the traditional silica gel sheet sticking mode, the suction mechanism 54 can be tightly fixed with the body surface through the suction cup 59, and the phenomenon that the viscosity of the traditional silica gel sheet is weakened and needs to be replaced due to repeated use in the suction mechanism 54 can be avoided.
Claims (8)
1. The utility model provides a human body surface wireless transmission's flesh electricity collection system which characterized in that: the myoelectricity monitoring device comprises a body surface electrode, a plurality of myoelectricity acquisition units, a data processing unit and a display terminal; the myoelectricity acquisition unit is connected with the body surface electrode in a solid line, the myoelectricity acquisition unit is wirelessly connected with the data processing unit through wifi, and the data processing unit is connected with the display terminal through a USB line; the body surface electrodes are not connected with each other, and the myoelectricity acquisition units are not connected with each other;
the myoelectric acquisition unit comprises a cortix-m 4 kernel MCU, a myoelectric signal acquisition module, a data storage module, a wireless transmission module (WiFi), a battery power supply module, a battery charging module, an electric quantity detection module, a nine-axis inertial measurement sensor module and an interaction indication module, wherein the myoelectric signal acquisition module comprises a differential amplification circuit, a filter circuit, an AD conversion unit and a right leg driving circuit; the battery power supply module comprises a group of linear lithium batteries and a power supply circuit, the nine-axis inertial measurement sensor module comprises a three-axis gyroscope sensor, a three-axis acceleration sensor and a three-axis magnetic induction sensor, and the interaction indication module comprises an LED indication circuit and a key interaction circuit; the data processing unit comprises a data storage module, a wireless transmission module (WiFi), a power supply module and a USB interface module;
the kertex-m 4 kernel MCU is specifically STM32L496QGI6 and is used as each module in the central processing unit control myoelectricity acquisition unit; the electromyographic signal acquisition module is specifically an ADS1294 integrated bioelectricity signal acquisition analog front-end chip, and the differential amplification circuit is 4 independent differential input program-controlled gain amplifiers for amplifying the electromyographic signals acquired by the body surface electrodes; the filter circuit is used for removing power frequency interference in the electromyographic signal acquisition process; the AD conversion unit is used for carrying out analog-to-digital conversion on the electromyographic signals, converting the analog signals into digital signals and sending the digital signals to the MCU, and the MCU transmits the digital signals to the data processing unit in real time through controlling a wireless transmission module (WIFI);
the data storage module is used for storing the acquired original electromyographic signals, backing up data and reading the data stored in the data storage module through the MCU; the battery power supply module provides stable working voltage for the whole circuit; the battery charging module can perform cycle charging on the lithium battery; the electric quantity detection module can monitor the electric quantity of the battery, prevent the influence of the over-low capacity of the battery on the performance of the battery and guide a user to charge in time when the electric quantity is low;
the indicating module comprises an LED lamp and a key, the LED lamp is an RGB lamp, various colors can be displayed, and the key can allow single click, double click, long press and other operations to realize different functions; the USB interface module provides a physical connection interface for a USB line to realize data transmission between the data processing unit and the display terminal; the group of linear batteries, particularly 3.7V800mA lithium batteries, is connected with a power supply circuit.
2. The myoelectricity collection unit of the myoelectricity collection system for the wireless transmission on the body surface of the human body according to claim 1, wherein: a heat dissipation mechanism for dissipating heat in the myoelectricity acquisition unit is mounted at the top in the shell A of the myoelectricity acquisition unit; the heat dissipation mechanism opens the two air suction grooves A at the top of the shell A when the heat dissipation mechanism operates and closes the two heat dissipation grooves A when the heat dissipation mechanism stops operating; the bottom of the shell B of the myoelectricity acquisition unit is provided with an adsorption mechanism which is used for fixing the myoelectricity acquisition unit on the body surface and electrically connecting the body surface with three reference electrodes on the circuit board B in the myoelectricity acquisition unit; the adsorption mechanism opens a plurality of heat dissipation grooves A at the bottom of the shell B of the myoelectricity acquisition unit in the working state of the adsorption mechanism, and closes the heat dissipation grooves A in the non-working state of the adsorption mechanism; and a charging transmission interface mechanism is arranged in the tail mounting grooves A of the shell A and the shell B of the myoelectricity acquisition unit and is electrically connected with a corresponding module unit on the circuit board A in the myoelectricity acquisition unit.
3. The myoelectricity collection unit of the myoelectricity collection system for the wireless transmission on the body surface of the human body according to claim 2, wherein: the heat dissipation mechanism comprises a fixed shaft, a mounting seat, a ring sleeve, a volute spring, a clamping block A, a clamping block B, a motor, a fan, a gear A, a gear B, a rotating shaft A and a sealed rotating ring, wherein the fixed shaft is mounted at the top of the inner part of a shell A of the myoelectricity acquisition unit; a ring sleeve arranged on the mounting seat is nested and rotated on the fixed shaft, and a fixture block B arranged on the fixed shaft is matched with a fixture block A arranged on the ring sleeve; the fixed shaft is nested with a volute spring which can rotationally reset the ring sleeve; a motor with an output shaft and a fixed shaft which have the same central axis is fixed on the mounting seat, and a fan is mounted on the output shaft of the motor; the top in the shell A of the myoelectricity acquisition unit is provided with a circular groove A communicated with the two air suction grooves A, and a rotating shaft A in transmission connection with the ring sleeve is in rotating fit in the circular groove A; the end face of the rotating shaft A is provided with two air suction grooves B which correspond to the air suction grooves A one by one.
4. The myoelectricity collection unit of the myoelectricity collection system for the wireless transmission on the body surface of the human body according to claim 3, wherein: the volute spring is positioned in the annular groove B on the inner wall of the ring sleeve; one end of the volute spring is connected with the inner wall of the ring groove B, and the other end of the volute spring is connected with the fixed shaft; the clamping block A is arranged in a ring groove C on the inner wall of the ring sleeve, and the clamping block B is movable in the ring groove C; a sealing rotating ring matched with the rotating shaft A is arranged in a ring groove A on the inner wall of the circular groove A; the ring sleeve is provided with a gear A which is meshed with a gear B arranged on the rotating shaft A.
5. The myoelectricity collection unit of the myoelectricity collection system for the wireless transmission on the body surface of the human body according to claim 2, wherein: the charging transmission interface mechanism comprises a fixed seat, a contact A, a spring A, a contact sleeve A, a contact B, a spring B, a push rod, a plug and a contact sleeve B, wherein the fixed seat is hermetically arranged in a shell A and a shell B tail installation groove A of the myoelectricity acquisition unit; one end of the fixed seat is provided with a slot A, and the other end of the fixed seat is provided with four sliding chutes C; the inner end face of the slot A is provided with four slots B which are in one-to-one correspondence with the sliding grooves C; the inner end surface of the slot B is provided with a mounting slot B which is axially communicated with the corresponding slot C; a contact sleeve A is fixedly sealed in each mounting groove B, a contact B is axially matched with the contact A in a sliding manner, and a spring B for resetting the contact B is mounted in a ring groove D in the inner wall of the mounting groove B; a contact A which is electrically connected with the circuit board A in the myoelectricity acquisition unit and is matched with the corresponding contact B is axially slid in each sliding groove C, and a spring A for resetting the contact A is nested on the contact A; the plug which is in splicing fit with the slot A is provided with four plug bushes B which are in one-to-one corresponding fit with the plug bushes A; the end face of the ring groove D is communicated with the end face of the corresponding slot B through two sliding grooves B, and an ejector rod which is fixedly connected with the contact B and matched with the end face of the corresponding contact sleeve B is arranged in each sliding groove B in a sliding mode.
6. The myoelectricity collection unit of claim 5, wherein the myoelectricity collection unit is used in the myoelectricity collection system for wireless transmission on the body surface of a human body, and comprises: the contact A is provided with a limiting ring for limiting the sliding amplitude of the contact A, and the contact A is electrically connected with a corresponding module unit on a circuit board A in the myoelectricity acquisition unit through a lead; the contact B is provided with a ring plate which moves in the corresponding ring groove D; the spring A is a compression spring; the spring A is positioned in the annular groove E of the inner wall of the corresponding chute C; one end of the spring A is connected with the inner wall of the corresponding chute E, and the other end of the spring A is connected with the annular protrusion on the corresponding contact A; the spring B is an extension spring; one end of the spring B is connected with the end face of the corresponding ring groove D, and the other end of the spring B is connected with the corresponding ring plate.
7. The myoelectricity collection unit of the myoelectricity collection system for the wireless transmission on the body surface of the human body according to claim 2, wherein: the adsorption mechanism comprises copper columns, a spring C, a round rod, a sucker, a copper inclined plate, a copper contact piece, a driving block, a driving rod, a rack, a gear C, a rotating shaft B, a turbine, a swivel mount A, a worm and a torsion wheel, wherein the three copper columns respectively slide in three sliding chutes A at the bottom of a shell B in the myoelectricity acquisition unit in a sealing manner along the direction vertical to the body surface; the three copper columns are respectively and electrically connected with three reference electrodes on the circuit board B; each copper column is nested with a spring C for resetting the copper column; the tail end of each copper column is provided with a sucking disc which is matched with the body surface and is matched with the conical groove on the inner wall of the corresponding sliding groove A, and a copper contact sheet which is positioned in the sucking disc and is matched with the body surface is connected with the corresponding copper column through a copper inclined plate which resets the copper contact sheet; a conical ring for ensuring the gap between the body surface and the shell B is arranged at the notch of each conical groove;
a driving rod is matched with the bottom in the shell B of the myoelectricity acquisition unit in a sliding manner, and a plurality of heat dissipation grooves B on the driving rod are matched with the heat dissipation grooves A at the bottom of the shell B of the myoelectricity acquisition unit in a one-to-one correspondence manner; three driving blocks which correspond to the copper columns one to one are mounted on the driving rod A, and driving inclined planes on the driving blocks are matched with round rods mounted on the corresponding copper columns; a rotating shaft B is rotatably matched on a rotating seat A at the bottom in a shell B of the myoelectricity acquisition unit, and a gear C arranged on the rotating shaft B is meshed with a rack arranged on the side wall of the driving rod; a worm is rotationally matched in a circular groove B in the side wall of a shell B of the myoelectricity acquisition unit, and the worm is meshed with a turbine arranged on a rotating shaft B; the exposed end of the worm is provided with a torsion wheel.
8. The myoelectricity collection unit of claim 7, wherein the myoelectricity collection unit is used in the myoelectricity collection system for wireless transmission on the body surface of a human body, and comprises: the driving rod slides between two guide rails at the bottom in the shell B of the myoelectricity acquisition unit; the spring C is an extension spring; one end of the spring C is connected with the bottom in the shell B of the myoelectricity acquisition unit, and the other end of the spring C is connected with a tension spring ring arranged on a corresponding copper column; a rotary seat B which is in rotary fit with the worm is arranged at the bottom in the shell B of the myoelectricity acquisition unit so as to increase the strength of the worm.
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| CN117426912A (en) * | 2023-12-22 | 2024-01-23 | 浙江强脑科技有限公司 | Bionic hand |
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| 韩晓晨: "蜡疗联合肢体功能被动训练与痉挛肌电疗治疗痉挛型脑瘫随机平行对照研究", 《实用中医内科杂志》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117426912A (en) * | 2023-12-22 | 2024-01-23 | 浙江强脑科技有限公司 | Bionic hand |
| CN117426912B (en) * | 2023-12-22 | 2024-03-15 | 浙江强脑科技有限公司 | Bionic hand |
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