CN210582486U

CN210582486U - System for measuring and recognizing finger and ball gripping actions

Info

Publication number: CN210582486U
Application number: CN201820518270.5U
Authority: CN
Inventors: 魏鹏绪; 齐玉洁
Original assignee: Shanghai Eight Phoenix Industrial Co Ltd
Current assignee: Shanghai Eight Phoenix Industrial Co Ltd
Priority date: 2018-04-12
Filing date: 2018-04-12
Publication date: 2020-05-22
Anticipated expiration: 2028-04-12

Abstract

The utility model provides a to pointing to and measurement and identification system of spherical gripping action, this measurement and identification system include: one end of each sensor is attached to the body surface projection position of any one point of the connecting line from the far end of the fifth metacarpal bone to the near end, and the other end of each sensor is attached to the body surface projection position close to other metacarpal bones; and a control unit in communication with each of the at least one sensor to receive measurement data of each of the at least one sensor. The measuring and identifying system is simple in structure, easy to implement and capable of accurately measuring and identifying finger-little finger pairs and spherical grasping actions of hands in real time.

Description

System for measuring and recognizing finger and ball gripping actions

Technical Field

The present invention relates to the field of medical devices, and more particularly, to a system for measuring and identifying finger and ball grip movements.

Background

The hand function is an important function required for human life and work. There are many measurement methods and virtual reality techniques based on these methods, including virtual reality training techniques, which can only measure and simulate the flexion and extension of each finger, but consider the palm as a rigid body (i.e., the shape of the palm is fixed). Indeed, various functions of the hand involve thumb-little finger-to-finger action and ball-grip action. Thumb-little finger-to-finger, grasping a spherical/ball-like object, requires contraction of the metacarpal muscles of the thumb and little finger. I.e. the palmar action involving the thumb and little finger. However, the palm movements of the hand cannot be recognized by measuring the flexion and extension of the fingers, and it is difficult to actually monitor and reproduce the movement state of the hand and to simulate and train the entire functions of the hand. Therefore, an important step of evaluating the hand function accurately in evaluating the functional state of the metacarpal muscle of the thumb and the little finger. The currently existing sensor-based hand motion measurement, assessment and training methods, devices and systems have not been able to measure and evaluate the thumb-little finger palmar motion and the ball grip motion induced by these two muscle contractions.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a to pointing to with the measurement and the identification system of spherical gripping action, this measurement and identification system includes:

one end of each sensor is attached to the body surface projection position of any one point of the connecting line from the far end of the fifth metacarpal bone to the near end, and the other end of each sensor is attached to the body surface projection position close to other metacarpal bones; and

a control unit in communication with each of the at least one sensor to receive measurement data of each of the at least one sensor.

In one embodiment, the other end is attached to a body surface projection position near any point of a connection line from the far end to the near end of the second metacarpal bone.

In one embodiment, the other end is attached to a body surface projection position of any point on a connecting line between the second metacarpal bone and the proximal end of the fourth metacarpal bone.

In one embodiment, the other end is attached to a body surface projection of the carpal bone near the proximal end of the second to 4 th metacarpal bones.

In one embodiment, each of the at least one sensor is attached to the back or palm of the hand.

In one embodiment, each of the at least one sensor is a resistive sensor or a fiber optic sensor.

In one embodiment, each of the at least one sensor is attached to the hand by being placed inside the glove, outside the glove, in the glove sandwich.

In one embodiment, each of the at least one sensor is attached to the hand by a mesh, a ribbon, a thread, a string.

In one embodiment, the control unit comprises:

the single chip microcomputer is connected with each sensor to receive measurement data; and

the upper computer is communicated with the singlechip to receive the measurement data and analyze the measurement data to judge the hand movement,

preferably, the single chip microcomputer is communicated with the upper computer in a wired communication mode, more preferably, the single chip microcomputer is communicated with the upper computer through a USB interface,

preferably, the single chip microcomputer is communicated with the upper computer in a wireless communication mode, more preferably, the single chip microcomputer is communicated with the upper computer through a Bluetooth interface or a wireless local area network (Wi-Fi),

in one embodiment, the single chip microcomputer includes:

the power supply module is connected with an external power supply;

an analog-to-digital conversion module connected with each of the at least one sensor to receive the measured analog signal and convert the analog signal to a digital signal; and

the data transmission module is respectively connected with the analog-to-digital conversion module and the upper computer so as to transmit the digital signal to the upper computer; and

the host computer includes:

the data receiving module is connected with the data sending module to receive the digital signals;

the judging module is connected with the data receiving module to receive the digital signals and judge finger-to-finger and spherical grasping actions of the hand according to the digital signals; and

and the display module is respectively connected with the data receiving module and the judging module so as to display the hand motion data measured by each sensor and the judging result of the judging module.

The utility model discloses a to pointing to with the measurement and the identification system simple structure of spherical gripping action, easily operation, can be in real time, accurate, measure fast and contain the thumb-little finger to pointing to the hand action of spherical gripping action, make the discernment of hand action more reliable.

Drawings

Fig. 1 is a measurement and recognition system for finger and ball grip motion according to an exemplary embodiment of the present invention (where the arrow direction is the data transfer direction); and

fig. 2 is a schematic diagram of the operation of the control unit in the finger and ball grip action measuring and recognizing system shown in fig. 1.

Detailed Description

Illustrative, non-limiting embodiments of the present invention are described in detail below with reference to the accompanying drawings, further illustrating a finger and ball grip motion measurement and identification system according to the present invention.

Referring to fig. 1, the present invention discloses a measurement and recognition system for finger and ball grip actions comprising at least one sensor 1 and a control unit, wherein each of the at least one sensor 1 communicates with the control unit to transmit measurement data.

The sensor 1 can measure the palm motion of the hand when the hand performs finger and ball gripping, for example, the amplitude of the palm flexing, and convert the detected information into an electrical signal or other information in a desired form to the control unit according to a certain rule. The present invention can use one sensor 1 to measure the palm motion, and can also use a plurality of sensors 1 to measure the palm motion and/or the motion of each finger simultaneously, without limiting the number of sensors 1. Preferably, the sensor 1 in the present invention is a resistance sensor or an optical fiber sensor. It will be understood by those skilled in the art that the sensor 1 may be any sensor commonly used in the art that can measure joint motion or a change in the form of an object, and is not limited to the above two. In the use process, one end of the sensor 1 is attached to the body surface projection position of any one point in the connecting line from the far end of the fifth metacarpal bone to the near end, and the other end of the sensor is attached to the body surface projection position close to other metacarpal bones, so that the change of the palm form is measured, and the finger-little finger pair and the spherical grasping action of the thumb are recognized.

The control unit communicates with each of the at least one sensor 1 to receive measurement data of each of the at least one sensor 1. A dedicated application is installed in the control unit, which can analyze and recognize hand movements from the received measurement data of the sensors.

The working method of the finger and ball gripping action measuring and recognizing system disclosed in the present invention will be described with reference to fig. 1. Firstly, attaching a sensor 1 to the surface of a hand, so that one end of the sensor 1 is attached to the fifth metacarpal bone position, and the other end of the sensor 1 is attached to a body surface projection position close to other metacarpal bones; starting the sensor 1 and the control unit, wherein the sensor 1 starts to measure the change of the palm form and transmits the measurement data to the control unit; a dedicated application in the control unit analyzes and recognizes the hand movements from the measurement data.

It can be known from the above description that the utility model discloses a measurement and identification system of finger and spherical gripping action simple structure, easily realization to be convenient for operate in concrete application, can discern the hand action in real time, fast. Meanwhile, by measuring the change of the palm form, whether the hand action contains the thumb-little finger palm action component or not can be identified, and the action amplitude can be identified.

The utility model discloses an among the measurement and the identification system to pointing with spherical gripping action, at least one sensor 1 can be adjusted according to practical application in the subsides dress position of hand, and the explanation is according to the utility model discloses some exemplary embodiments's sensor pastes the dress scheme, wherein uses a sensor as the example.

In one embodiment, one end of the sensor 1 is attached to the body surface projection position of any point in the connecting line from the far end to the near end of the fifth metacarpus, and the other end is attached to the body surface projection position of any point in the connecting line from the far end to the near end of the second metacarpus.

In one embodiment, one end of the sensor 1 is attached to the body surface projection position of any point in the connecting line from the far end to the near end of the fifth metacarpal bone, and the other end is attached to the body surface projection position of any point in the connecting line from the second metacarpal bone to the near end of the 4 th metacarpal bone.

In one embodiment, one end of the sensor 1 is attached to the body surface projection position of any point in the connecting line from the far end to the near end of the fifth metacarpal bone, and the other end is attached to the body surface projection position of the second metacarpal bone to the carpal bone close to the near end of the 4 th metacarpal bone.

It should be noted that, in the above exemplary embodiment, the sensor 1 may be attached to the back of the hand or the palm of the hand, so that the user can select the position to attach the sensor according to his own exercise habits, thereby providing greater convenience.

In order to facilitate the application of the sensor to the hand, some embodiments of the present invention provide methods of applying the sensor to the hand. In one embodiment, at least one sensor is associated with the glove for donning fit to the hand, for example, the at least one sensor may be placed inside the glove, outside the glove, or in the glove sandwich. Therefore, the user can conveniently mount the sensor by wearing the glove, and the measurement and identification of the hand action are realized. In another embodiment, the sensor is attached to the hand by a mesh, ribbon, thread, string, or the like. However, it will be appreciated by those skilled in the art that the at least one sensor of the present invention may be flexibly attached to the hand by other means than those listed above.

Referring to fig. 1 and 2, in one embodiment, the control unit includes a single chip microcomputer 2 and an upper computer 3. The single chip microcomputer 2 is connected with each of the at least one sensor 1 to receive and store the measurement data sent by each of the at least one sensor 1 for subsequent data analysis and storage. The upper computer 3 is communicated with the singlechip 2 to receive the measurement data, a special application program is installed in the upper computer 3, and the measurement data is analyzed by the special application program to judge the hand movement. Therefore, the utility model discloses a to pointing to with the measurement of spherical gripping action and identification system's the control unit can gather sensor 1's measured data in real time, save measured data in order to analyze and follow-up traceing back.

With continued reference to fig. 2, in an embodiment, the single chip includes a power module (not shown in the figure), an analog-to-digital conversion module and a data transmission module, and the upper computer includes a data receiving module, a determination module and a data display module.

The power module is connected with an external power supply to provide required electric energy for the single chip microcomputer. The analog-to-digital conversion module is connected with each sensor to receive the measured analog signal, wherein the analog signal is the signal transmitted by the sensor to measure the palm action. The analog-to-digital conversion module further converts the analog signal into a digital signal to be sent to the data sending module. And the data sending module receives the digital signal from the analog-to-digital conversion module and then sends the digital signal to an upper computer so as to judge the finger-ball gripping action. The data receiving module receives the digital signal from the data sending module and further sends the digital signal to the judging module. The judgment module is internally provided with a special application program which analyzes the digital signal to judge the hand motion type according to the change range of the digital signal, in particular to judge the finger-to-finger and spherical grasping motion of the hand according to the preset change threshold value of the digital signal. It should be noted that the threshold of the change of the digital signal can be set according to the hand characteristics of the individual subject, and is not limited herein. The display module is respectively connected with the data receiving module and the judging module so as to display the digital signals of the hand motion data measured by each sensor and the judging result of the judging module.

In one embodiment, the single chip microcomputer 2 communicates with the upper computer 3 through a wired communication mode, for example, the single chip microcomputer 2 communicates with the upper computer 3 through a USB interface. In other embodiments, the single chip microcomputer 2 communicates with the upper computer 3 in a wireless communication mode, for example, the single chip microcomputer 2 communicates with the upper computer 3 through a bluetooth interface.

Claims

1. A system for measuring and identifying finger and ball grip motion, the system comprising:

the sensor is in a strip shape, one end of each sensor is attached to the body surface projection position of any one point of a connecting line from the far end of the fifth metacarpus to the near end, and the other end of each sensor is attached to the body surface projection position close to other metacarpus; and

2. The system of claim 1, wherein the other end is attached to a body surface projection near any point on a line connecting the distal end to the proximal end of the second metacarpal.

3. The system of claim 1, wherein the other end is attached to a body surface projection position near any point on a line connecting the proximal ends of the second and fourth metacarpals.

4. The system of claim 1, wherein the other end is attached to a body surface projection of the carpal bone proximate the proximal end of the second to 4 th metacarpal bone.

5. The system of claim 1, wherein each of the at least one sensor is attached to a back or palm of a hand.

6. The system of claim 1, wherein each of the at least one sensor is a resistive sensor or a fiber optic sensor.

7. The system of claim 1, wherein each of the at least one sensor is attached to the hand by being placed inside the glove, outside the glove, in the glove sandwich.

8. The system of claim 1, wherein each of the at least one sensor is affixed to the hand by a mesh, a ribbon, a thread, a string.

9. The system of claim 1, wherein the control unit comprises:

a single chip microcomputer connected with each of the at least one sensor to receive measurement data; and

the upper computer is communicated with the single chip microcomputer to receive the measurement data and analyze the measurement data to judge the hand movement.

10. The system of claim 9, wherein the single chip microcomputer communicates with the upper computer through a wired communication mode.

11. The system of claim 10, wherein the single chip microcomputer communicates with the upper computer through a USB interface.

12. The system of claim 9, wherein the single chip microcomputer communicates with the upper computer in a wireless communication manner.

13. The system of claim 12, wherein the single-chip microcomputer communicates with the upper computer through a bluetooth interface or a wireless local area network (Wi-Fi).

14. The system of claim 9, wherein,

the singlechip includes:

the power supply module is connected with an external power supply;

an analog-to-digital conversion module connected with each of the at least one sensor to receive a measured analog signal and convert the analog signal to a digital signal; and

the host computer includes:

the data receiving module is connected with the data sending module to receive the digital signal;

and the display module is respectively connected with the data receiving module and the judging module so as to display the hand action data measured by each sensor and the judging result of the judging module.