CN220588838U

CN220588838U - Dumbbell action recognition sensor based on internet of things

Info

Publication number: CN220588838U
Application number: CN202322079180.4U
Authority: CN
Inventors: 王宇帆; 孙士龙; 刘俊; 马放心
Original assignee: Jidong Suzhou Sensing Technology Co ltd
Current assignee: Jidong Suzhou Sensing Technology Co ltd
Priority date: 2023-08-03
Filing date: 2023-08-03
Publication date: 2024-03-15
Anticipated expiration: 2033-08-03

Abstract

The utility model discloses a dumbbell action recognition sensor based on the Internet of things, which comprises a shell, a PCB (printed circuit board), an MEMS (micro electro mechanical System) six-axis inertial sensor, a Bluetooth module, a data memory, an antenna, a rechargeable lithium battery, a switch key, a charging conductive column and a mounting seat, wherein the PCB is detachably arranged in an upper shell, the MEMS six-axis inertial sensor comprises a three-axis MEMS gyroscope and a three-axis MEMS accelerometer, the rechargeable lithium battery is arranged on the inner bottom wall of a lower shell, the switch key is embedded on the upper end wall of the upper shell, the charging conductive column is respectively embedded on two sides of the front end wall of the shell, the front end part of the mounting seat is provided with a containing groove, and the shell is detachably embedded in the containing groove. The technical scheme of the utility model can collect and identify various different motion data such as the speed, the acceleration, the amplitude, the motion track and the like of the dumbbell, and the sensor is very convenient and quick to install and detach, and has the advantages of simple operation, high identification accuracy and strong practicability.

Description

Dumbbell action recognition sensor based on internet of things

Technical Field

The utility model relates to the technical field of motion capture and recognition, in particular to a dumbbell motion recognition sensor based on the Internet of things.

Background

Dumbbell is a simple device for strengthening muscle strength training, and can strengthen the muscle strength of all parts of the body by frequently doing dumbbell exercise. However, after a few people exercise with the dumbbell, the dumbbell does not increase the strength, does not become strong and handsome, often has a cool mind, is also bound by the pavilion, and even becomes a substitute of a hammer. In fact, dumbbell exercise is a big academic, and if the exercise using the dumbbell is incorrect and out of specification, the exercise effect tends to be greatly lost.

In recent years, with the development of sensor technology, motion recognition applications have become a focus of attention. Simple motion recognition techniques, such as pedometers and the like, have been widely used in wearable devices such as smart bracelets. However, the action recognition function of the existing wearable device is relatively single, and the requirement of recognizing more actions in dumbbell training can not be met far. Therefore, we propose a dumbbell action recognition sensor based on thing networking, through using dumbbell training in-process to basic motion data such as speed, acceleration, range, action track of dumbbell gather, discernment and correct the action of nonstandard action, improve training effect.

Disclosure of Invention

The utility model mainly aims to provide a dumbbell action recognition sensor based on the Internet of things, and aims to solve the technical problem that the action recognition function of the existing wearable equipment is single and the requirement of recognizing more actions in dumbbell training cannot be met.

In order to achieve the above object, the dumbbell action recognition sensor based on the internet of things provided by the utility model comprises a shell, a PCB, a MEMS six-axis inertial sensor, a Bluetooth module, a data memory, an antenna, a rechargeable lithium battery, a switch key, a charging conductive column and an installation seat, wherein the shell comprises an upper shell and a lower shell, the upper shell is detachably covered on the upper end part of the lower shell, the PCB is detachably arranged in the upper shell, the MEMS six-axis inertial sensor comprises a triaxial MEMS gyroscope and a triaxial MEMS accelerometer, the MEMS six-axis inertial sensor, the Bluetooth module, the data memory and the antenna are respectively arranged on the PCB, the rechargeable lithium battery is arranged on the inner bottom wall of the lower shell, the rechargeable lithium battery is positioned below the PCB, the switch key is embedded on the upper end wall of the upper shell, the charging conductive column is respectively embedded on two sides of the front end wall of the shell, the MEMS six-axis inertial sensor, the Bluetooth module, the data memory, the antenna, the lithium battery, the charging column and the installation seat are respectively arranged on the two side walls of the shell, and the installation seat is respectively provided with a detachable dumbbell.

Optionally, a first fastening groove is concavely arranged on the outer side wall of the shell along the circumferential direction, a first fastening protrusion is convexly arranged on the inner side wall of the front end part of the accommodating groove along the circumferential direction, and the first fastening protrusion is detachably embedded in the first fastening groove.

Optionally, the lateral wall of the lower tip of last casing is protruding along the circumferencial direction to be equipped with a plurality of spacing archs of second, the inside wall of the upper tip of lower casing along the circumferencial direction concave be equipped with a plurality of with the spacing protruding one-to-one of second spacing groove, the spacing arch of second detachably inlays respectively and locates the setting in the spacing inslot of second.

Optionally, the inside wall of lower casing is protruding along the circumferencial direction to be equipped with a plurality of first limiting plates, chargeable lithium cell's lateral wall respectively with the lateral wall butt setting of first limiting plate.

Optionally, four base angles of the inner top wall of the upper shell are respectively provided with a first limiting column in a protruding mode, the lower end parts of the first limiting columns are respectively provided with a locating pin in a protruding mode, four top angles of the PCB board are respectively provided with a locating hole in a recessed mode, the locating pins are respectively detachably embedded in the locating holes, the lower end walls of the first limiting columns are respectively in butt joint with the upper end walls of the locating holes, four base angles of the inner bottom wall of the lower shell are respectively provided with a second limiting column in a protruding mode, and the upper end walls of the second limiting columns are respectively in butt joint with the lower end walls of the locating holes.

Optionally, a plurality of second limiting plates are respectively arranged on two sides of the inner bottom wall of the upper shell in a protruding mode, and the upper end walls of the second limiting plates are respectively in butt joint with the upper end walls of the PCB.

Alternatively, the MEMS six-axis inertial sensor employs a BMI055 inertial sensor chip.

Optionally, the bluetooth module adopts an NRF52832 bluetooth chip.

Optionally, the LED display device further comprises an LED indicator lamp, wherein the LED indicator lamp is embedded in the upper end wall of the upper shell, and the LED indicator lamp is electrically connected with the PCB.

The technical scheme of the utility model has the following beneficial effects: according to the technical scheme, through the built-in MEMS six-axis inertial sensor, various different motion data such as speed, acceleration, amplitude, motion track and the like in the dumbbell using process are acquired, identified and stored, the built-in Bluetooth chip is connected with the mobile intelligent terminal in a data mode, measurement data are wirelessly transmitted to the mobile intelligent terminal through Bluetooth, data processing analysis is carried out, the measurement data are compared with a background standard motion database, real-time motion analysis and motion standard standardization assessment are provided for dumbbell trainers, nonstandard motions are identified and corrected, the requirement of more complex motion identification in dumbbell motion is met, guidance is provided for effectively and scientifically completing standard motions, the dumbbell training effect is improved, the sensor is convenient and fast to install and detach, the sensor is convenient to charge, the operation is simple, the measurement identification precision is high, and the practicability is high.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of the overall structure of a dumbbell motion recognition sensor based on the internet of things according to an embodiment of the utility model;

FIG. 2 is a schematic diagram of an overall structure of a dumbbell motion recognition sensor based on the Internet of things according to another view angle of an embodiment of the utility model;

FIG. 3 is a schematic diagram of an exploded structure of a dumbbell motion recognition sensor based on the Internet of things according to an embodiment of the utility model;

FIG. 4 is a schematic diagram of another exploded structure of a dumbbell motion recognition sensor based on the Internet of things according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of another exploded structure of a dumbbell motion recognition sensor based on the Internet of things according to an embodiment of the utility model;

fig. 6 is a schematic diagram of still another exploded structure of a dumbbell motion recognition sensor based on internet of things according to an embodiment of the utility model.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model provides a dumbbell action recognition sensor based on the Internet of things.

As shown in fig. 1 to 6, in an embodiment of the present utility model, the dumbbell motion recognition sensor based on the internet of things comprises a housing 101, a PCB board 102, a MEMS six-axis inertial sensor 103, a bluetooth module 104, a data memory 105, an antenna 106, a rechargeable lithium battery 107, a switch button 108, a charging conductive post 109 and a mounting seat 110, wherein the housing 101 comprises an upper housing 1011 and a lower housing 1012, the upper housing 1011 is detachably covered on the upper end of the lower housing 1012, the PCB board 102 is detachably arranged in the upper housing 1011, the MEMS six-axis inertial sensor 103 comprises a three-axis MEMS gyroscope and a three-axis MEMS accelerometer, the MEMS six-axis inertial sensor 103, the bluetooth module 104, the data memory 105 and the antenna 106 are respectively arranged on the PCB board 102, the rechargeable lithium battery 107 is arranged on the inner bottom wall of the lower housing 1012, the rechargeable lithium battery 107 is positioned below the PCB board 102, the switch button 108 is embedded on the upper end wall of the upper housing 1011, the charging conductive post 109 is respectively embedded on two sides of the front end wall of the housing 101, the MEMS six-axis inertial sensor 103, the bluetooth module 105, the data memory 105, the antenna 106 is arranged on the two-sided adhesive pad 101 and the mounting seat 110 is respectively arranged on the side wall of the housing 1101, and the housing 1101 is detachably connected with the housing 101.

As shown in fig. 3 and 4, in the present embodiment, a first fastening groove 111 is concavely formed in the outer side wall of the housing 101 along the circumferential direction, a first fastening protrusion 1102 is convexly formed in the inner side wall of the front end portion of the accommodating groove 1101 along the circumferential direction, and the first fastening protrusion 1102 is detachably embedded in the first fastening groove 111 to perform a good limiting function on the housing, so that the housing is more firmly fixed on the base, and the housing is effectively prevented from being released and dropped from the housing.

As shown in fig. 5 and 6, in the present embodiment, the outer sidewall of the lower end portion of the upper housing 1011 is provided with a plurality of second limiting protrusions 112 protruding in the circumferential direction, the inner sidewall of the upper end portion of the lower housing 1012 is provided with a plurality of second limiting grooves (not shown) corresponding to the second limiting protrusions 112 one by one in the circumferential direction, and the second limiting protrusions 112 are respectively detachably embedded in the second limiting grooves, so that the assembly and disassembly between the upper housing and the lower housing are more convenient and quick, and the screw does not need to be screwed by means of a tool.

As shown in fig. 5, in the present embodiment, the inner side wall of the lower housing 1012 is provided with a plurality of first limiting plates 113 protruding along the circumferential direction, and the outer side walls of the rechargeable lithium battery 107 are respectively abutted to the side walls of the first limiting plates 113, so as to limit the rechargeable lithium battery and prevent the rechargeable lithium battery from being displaced and loosened.

As shown in fig. 5 and 6, in the present embodiment, four bottom corners of the inner top wall of the upper housing 1011 are respectively provided with a first limiting post 114, the lower end of the first limiting post 114 is respectively provided with a positioning pin 1141, four top corners of the PCB 102 are respectively provided with a positioning hole 1021 in a concave manner, the positioning pins 1141 are respectively detachably embedded in the positioning holes 1021, the lower end wall of the first limiting post 114 is respectively abutted with the upper end wall of the positioning hole 1021, four bottom corners of the inner bottom wall of the lower housing 1012 are respectively provided with a second limiting post 115, and the upper end wall of the second limiting post 115 is respectively abutted with the lower end wall of the positioning hole 1021, thereby facilitating the assembly and disassembly of the PCB without screwing a screw by means of a tool, and being firm and reliable.

As shown in fig. 5 and 6, in the present embodiment, two sides of the inner bottom wall of the upper housing 1011 are respectively provided with a plurality of second limiting plates 116 in a protruding manner, the upper end walls of the second limiting plates 116 are respectively in abutting connection with the upper end wall of the PCB 102, and the PCB is pressed and fixed by the second limiting plates, so that the PCB is further limited, and the PCB is prevented from being skewed and loose.

In this embodiment, the MEMS six-axis inertial sensor 103 adopts a BMI055 inertial sensor chip, and the inertial sensor chip integrates a 3-axis MEMS gyroscope and a 3-axis MEMS accelerometer on a single chip, that is, the sensor size can be reduced by using a technology based on a single-chip MEMS to realize high 6-axis orthogonality (inter-axis orthogonality ++0.01°), space is saved, measurement accuracy is ensured by an algorithm, attitude parameters (roll angle, pitch angle, angular velocity and acceleration) of a moving carrier can be measured, and the attitude and angular velocity deviation can be correspondingly estimated by 6-state kalman filtering with proper gain, so that the sensor chip is suitable for inertial attitude measurement under a moving or vibrating state, and meets the requirement of more complex motion recognition in dumbbell movement.

In this embodiment, the bluetooth module 104 adopts an NRF52832 bluetooth chip, where the NRF52832 bluetooth chip is a flagship bluetooth chip with BLE 5.0 issued by NORDIC, which brings higher performance, lower power consumption and more functions, has ultra-small volume, supports bluetooth versions of 5.0 and below, supports interfaces such as UART, I2C, SPI, and the like by hardware, and effectively ensures the transmission accuracy of measurement data in a low-power bluetooth mode.

As shown in fig. 4, in this embodiment, the device further includes an LED indicator 117, the LED indicator 117 is embedded on the upper end wall of the upper housing 1011, and the LED indicator 117 is electrically connected with the PCB 102.

Specifically, the working principle and the working process of the utility model are as follows: firstly, the rear side wall of the mounting seat is stuck on the outer side wall of the dumbbell through double faced adhesive tape, then the shell is inserted into the accommodating groove of the mounting seat, so that the sensor is very convenient and quick to mount and dismount, various different motion data such as speed, acceleration, amplitude, action track and the like in the using process of the dumbbell are acquired, identified and stored in real time through the built-in MEMS six-axis inertial sensor, the data connection is carried out between the built-in Bluetooth chip and the mobile intelligent terminal, the measurement data is wirelessly transmitted to the mobile intelligent terminal through Bluetooth, the method is characterized in that data processing analysis is carried out, the data processing analysis is compared with a background standard action database, real-time movement analysis and action standard standardization assessment are provided for dumbbell trainers, irregular actions are identified and corrected, the requirement of more complex action identification in dumbbell movement is met, instruction is provided for effectively and scientifically completing standardized actions, dumbbell training effects are improved, accordingly, more efficient and safe exercise can be achieved, and the sensor is installed on a dumbbell through an installation base, and is simple and fast to install and disassemble.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. The dumbbell action recognition sensor based on the Internet of things is characterized by comprising a shell, a PCB, a MEMS six-axis inertial sensor, a Bluetooth module, a data memory, an antenna, a rechargeable lithium battery, a switch key, a charging conductive column and a mounting seat, wherein the shell comprises an upper shell and a lower shell, the upper shell is detachably covered on the upper end part of the lower shell, the PCB is detachably arranged in the upper shell, the MEMS six-axis inertial sensor comprises a triaxial MEMS gyroscope and a triaxial MEMS accelerometer, the MEMS six-axis inertial sensor, the Bluetooth module, the data memory and the antenna are respectively arranged on the PCB, the rechargeable lithium battery is arranged on the inner bottom wall of the lower shell, the rechargeable lithium battery is positioned below the PCB, the switch key is embedded on the upper end wall of the upper shell, the charging conductive column is respectively embedded on two sides of the front end wall of the shell, the MEMS six-axis inertial sensor, the Bluetooth module, the data memory, the antenna, the lithium battery, the charging column and the charging column are respectively embedded on the two sides of the front end wall of the shell, and the front end wall of the shell are respectively, and the mounting seat is provided with a detachable side wall of the housing, and the mounting seat is respectively arranged on the side wall of the PCB.

2. The dumbbell action recognition sensor based on the internet of things according to claim 1, wherein a first fastening groove is concavely formed in the outer side wall of the shell along the circumferential direction, a first fastening protrusion is convexly formed in the inner side wall of the front end portion of the accommodating groove along the circumferential direction, and the first fastening protrusion is detachably embedded in the first fastening groove.

3. The dumbbell action recognition sensor based on the internet of things according to claim 1, wherein a plurality of second limiting protrusions are convexly arranged on the outer side wall of the lower end portion of the upper shell along the circumferential direction, a plurality of second limiting grooves which are in one-to-one correspondence with the second limiting protrusions are concavely arranged on the inner side wall of the upper end portion of the lower shell along the circumferential direction, and the second limiting protrusions are respectively detachably embedded in the second limiting grooves.

4. The dumbbell action recognition sensor based on the internet of things according to claim 1, wherein a plurality of first limiting plates are arranged on the inner side wall of the lower shell in a protruding mode along the circumferential direction, and the outer side walls of the rechargeable lithium batteries are respectively in butt joint with the side walls of the first limiting plates.

5. The dumbbell action recognition sensor based on the internet of things according to claim 1, wherein four bottom corners of the inner top wall of the upper shell are respectively provided with a first limiting column in a protruding mode, the lower end parts of the first limiting columns are respectively provided with a positioning pin in a protruding mode, four top corners of the PCB board are respectively provided with a positioning hole in a recessed mode, the positioning pins are respectively detachably embedded in the positioning holes, the lower end walls of the first limiting columns are respectively abutted with the upper end walls of the positioning holes, the four bottom corners of the inner bottom wall of the lower shell are respectively provided with a second limiting column in a protruding mode, and the upper end walls of the second limiting columns are respectively abutted with the lower end walls of the positioning holes.

6. The dumbbell action recognition sensor based on the internet of things according to claim 1, wherein a plurality of second limiting plates are respectively arranged on two sides of the inner bottom wall of the upper shell in a protruding mode, and the upper end walls of the second limiting plates are respectively in butt joint with the upper end walls of the PCB.

7. The dumbbell motion recognition sensor based on the internet of things according to claim 1, wherein the MEMS six-axis inertial sensor adopts a BMI055 inertial sensor chip.

8. The dumbbell motion recognition sensor based on the internet of things according to claim 1, wherein the Bluetooth module is an NRF52832 Bluetooth chip.

9. The dumbbell action recognition sensor based on the internet of things according to claim 1, further comprising an LED indicator lamp, wherein the LED indicator lamp is embedded in the upper end wall of the upper shell, and the LED indicator lamp is electrically connected with the PCB.