CN111358476A

CN111358476A - Finger force sensor and muscle reaction monitoring system comprising same

Info

Publication number: CN111358476A
Application number: CN202010458358.4A
Authority: CN
Inventors: 刘佳; 周志明; 黄武
Original assignee: Chengdu Techman Software Co Ltd
Current assignee: Chengdu Techman Software Co Ltd
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2020-07-03
Anticipated expiration: 2040-05-27
Also published as: CN111358476B

Abstract

The invention discloses a finger force sensor and a muscle reaction monitoring system comprising the same, and relates to the field of human body muscle reaction experiments. The finger force sensor provided by the invention can better support the hand of a testee, prevents the interference of 'pseudo-mental fatigue' and the like possibly caused by the involuntary action of a human body in the detection process, improves the accuracy of the measurement result, and has better use comfort.

Description

Finger force sensor and muscle reaction monitoring system comprising same

Technical Field

The invention relates to the field of human muscle reaction experiments, in particular to a finger force sensor and a muscle reaction monitoring system comprising the same.

Background

Skeletal muscle fibers are controlled by motor nerve fibers, and after the nerve fibers are stimulated, the excitatory nerve fibers are conducted to corresponding muscle fibers in the form of action potentials, and the muscle fibers are caused to contract or relax through excitation-contraction coupling. The excitation of nerve fibers is manifested by bioelectricity on cell membranes-the generation and conduction of action potentials, and subsequently, the contraction of muscle cells, reflected by changes in tension and length, both of which produce different mechanisms and manifestations.

By electrically stimulating the forearm nerve and observing the muscle response to the change of the stimulation intensity, the single contraction and recruitment phenomena can be known, and the tonic contraction phenomena can be observed by the change of the muscle response to the stimulation frequency.

The specific operation steps are as follows: (1) the testee sits quietly, the stimulator is bound on the wrist along the long axis direction of the arm, and the two stimulation electrodes are completely attached to the skin; (2) slightly placing the palm of one hand of a subject on an experimental platform downwards, and slightly putting a middle finger on a finger pulse transducer sensing piece; (3) stimulation is delivered to the subject by a stimulator and waveform monitoring is performed.

The existing finger pulse transducer is simple in structure, not attractive, short of a structure for fixing the finger pulse transducer with an experimental platform and a structure for properly supporting the hand, and poor in comfort level, and can cause interference such as 'pseudo-mental fatigue' caused by human body involuntary actions in the detection process, so that the measurement result is inaccurate.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a finger force sensor and a muscle reaction monitoring system comprising the same, which have reasonable and attractive structure, play a role in supporting the hands of a testee during a human muscle reaction experiment, prevent the interference of 'pseudo-mental fatigue' and the like caused by the involuntary action of a human body, and improve the comfort level and the accuracy of an experiment result.

The purpose of the invention is realized by the following technical scheme:

the utility model provides a indicate force transducer, includes support, spheroid and adjusting device, the support adopts arch portal frame structure, and both ends are connecting portion, and the middle part is for holding the portion, connecting portion are used for being connected with experiment platform, the portion of holding is used for holding the hand of spheroid and examinee, be equipped with the button on the spheroid, be equipped with on the button and be used for receiving drawing of finger reaction and press the sensor, adjusting device both has been used for driving spheroid lift, rotation, is used for fixed spheroid position again.

The working principle of the invention is as follows: establish the device on experimental platform immediately through the connecting portion, the portion of holding, space between experimental platform and the spheroid is used for holding the hand of testee, it is specific, the palm of testee is the state of relaxing up, pass this space, the finger is bent a little and is relaxed (make the action of about to holding the spheroid), it goes up and down to utilize adjusting device to drive the spheroid, it is rotatory, it aims at with the finger that awaits measuring to press the key on the spheroid, then fixed spheroidal position, prevent its rotation or displacement again, the spheroid is held lightly to the finger (the finger that awaits measuring) and the palm of testee this moment, the finger that awaits measuring is taken gently on spheroidal key, can begin to carry out human muscle reaction experiment.

Furthermore, the adjusting device comprises a guide post, a guide sleeve and a locking piece, the guide post penetrates through the accommodating part and is connected with the position right above the ball body, the guide sleeve is arranged outside the guide post, the guide post can rotate and slide in the guide sleeve, the outside of the guide sleeve is connected with the bracket, and the locking piece is used for locking the guide post and the guide sleeve to limit the guide post and the guide sleeve to move relatively.

Further, the uide bushing is including the cover body and jack catch, the guide post outside is located to the cover body cover, the cover body can dismantle fixed connection with the holding portion, the jack catch is located set body one end for with the locking piece cooperation in order to restrict guide post and uide bushing and take place relative motion.

Further, the jack catch includes that a plurality of circumference locates the claw piece of cover body upper end, the upper end of claw piece sets up to the inclined plane.

Furthermore, the locking piece is a hollow cylinder, and the inner surface of the upper end of the hollow cylinder is provided with an inclined surface matched with the claw piece.

Further, the pull-press sensor is arranged on the mounting seat, the mounting seat is arranged inside the ball body, and the key is connected with the pull-press sensor.

Further, the connecting portion is connected with the experiment platform through a connecting device, and the connecting device comprises a sucker arranged on the bottom surface of the connecting portion.

Furthermore, the connecting device further comprises a first connecting piece, a second connecting piece and a wrench, wherein the second connecting piece is arranged above the connecting part, a through groove is formed in the side surface of the second connecting piece, the first connecting piece penetrates through the connecting part to be connected with the sucker, the upper end of the first connecting piece is sleeved inside the second connecting piece, the wrench is clamped outside the second connecting piece, a connecting rod is arranged in the first connecting piece, the connecting rod penetrates through the through groove, the first connecting piece and the wrench, and the connecting rod is connected with the eccentric position of the wrench.

A muscle response monitoring system comprises the finger force sensor, a stimulator used for electrically stimulating forearm nerves, a collector used for collecting data and a user terminal used for receiving the data, wherein the tension and compression sensor in the finger force sensor is in communication connection with the collector, and the collector is in communication connection with the stimulator and the user terminal respectively.

Further, the type of the collector is BL-420N.

The invention has the beneficial effects that:

(1) the finger force sensor provided by the invention can well support the hand of a testee, the testee can effectively support five fingers by holding the ball body in the test process, the interference of 'pseudo-mental fatigue' and the like caused by the involuntary action of a human body possibly occurring in the detection process is prevented, the accuracy of the measurement result is improved, and the use comfort level is good;

(2) the finger force sensor provided by the invention can be easily fixed on a smooth surface such as an experiment platform and the like through the suckers at the two sides, so that the finger force sensor can be fixed or moved conveniently without damage, and is more environment-friendly and reusable compared with the mode of fixing by using an adhesive tape in the prior art;

(3) the sphere of the finger force sensor provided by the invention can rotate 360 degrees so as to be respectively suitable for 5 fingers to carry out experiments at will; the sphere can be adjusted up and down to accommodate hand sizes of different subjects.

(4) The sensor cable welds on the inside PCB board of spheroid, and outside cable one end welding other end passes the solid wire sheath on the guide post of card and is connected with the collector on the PCB board, and the inside cable of rotatory spheroid in-process can not intertwine and knot, and the wiring is neater and more pleasing to the eye, can increase the life of cable simultaneously.

(5) The stimulation patch is required to be attached to the same side of the wrist and the palm of a testee in a muscle reaction experiment, when the experiment is carried out by adopting the prior art, the palm of the testee is required to face downwards, and the middle finger is lightly arranged on the sensor, so that the testee needs to turn over the wrist to face downwards after the stimulation patch is attached, and the stimulation patch is easy to fall off in the turning-over process.

Drawings

FIG. 1 is a schematic structural diagram of a finger force sensor provided in the present invention;

FIG. 2 is a cross-sectional view of a finger force sensor provided in accordance with the present invention;

FIG. 3 is an exploded view of an adjustment mechanism for a finger force sensor in accordance with the present invention;

FIG. 4 is a cross-sectional view of a locking member of the finger force sensor provided by the present invention;

FIG. 5 is a schematic diagram of the connection between the key and the finger force sensor according to the present invention;

FIG. 6 is a schematic diagram of a muscle response monitoring system provided by the present invention;

in the figure, 1-bracket, 2-ball, 3-adjusting device, 4-connecting part, 5-containing part, 6-guide column, 7-locking part, 8-guide sleeve, 9-key, 11-sleeve body, 12-claw, 13-connecting device, 14-suction cup, 15-connecting piece I, 16-connecting piece II, 17 wrench, 18-connecting rod, 19-through groove, 20-pulling and pressing sensor and 21-mounting seat.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution:

example 1

A finger force sensor comprises a support 1, a ball body 2 and an adjusting device 3, wherein two ends of the support 1 are both provided with connecting parts 4, the middle part of the support is provided with a containing part 5, the connecting parts 4 are used for being connected with an experiment platform, and the containing part 5 is of an arched portal frame structure and is used for containing the ball body 2 and a hand of a subject; the adjusting device 3 comprises a guide post 6, a guide sleeve 8 and a locking piece 7, wherein the guide post 6 penetrates through the accommodating part 5 to be connected with the position right above the ball body 2, the guide sleeve 8 is arranged outside the guide post 6, and the guide post 6 can rotate and slide in the guide sleeve 8; as a preferable mode, the guide sleeve 8 comprises a sleeve body 11 and a jaw 12, wherein the sleeve body 11 is sleeved outside the guide post 6, the sleeve body 11 and the accommodating part 5 are detachably and fixedly connected through bolts, buckles and the like, and the jaw 12 is arranged at one end of the sleeve body 11 and is used for being matched with the locking part 7 to limit the guide post 6 and the guide sleeve 8 to move relatively; as a further preferable mode, the claw 12 comprises a plurality of claw pieces circumferentially arranged at the upper end of the sleeve body 11, the upper end of each claw piece is provided with an inclined surface, the locking piece 7 is a hollow cylinder, and the inner surface of the upper end of the hollow cylinder is provided with an inclined surface matched with the inclined surface of the claw piece; the ball body 2 is provided with a key 9, the key 9 is provided with a pull-press sensor 20 for receiving finger reaction, an LFS-13S type pull-press sensor can be adopted, the pull-press sensor 20 is mainly applied to the field of force value monitoring with small installation space, such as a key 9 hand feeling tester, a plug-pull force tester, a riveting machine, a welding machine and the like, the pull-press sensor 20 is arranged on an installation seat 21, the installation seat 21 is arranged inside the ball body 2, the key 9 and the pull-press sensor 20 are locked through screws, and the pull-press sensor 20 is stressed when the key 9 is pressed down.

Preferably, the connecting part 4 is connected with the experiment platform through a connecting device 13, the connecting device 13 comprises a suction cup 14 arranged on the bottom surface of the connecting part 4, and the suction cup 14 is used for adsorbing the experiment platform; as a further preferable mode, the connecting device 13 further includes a first connecting member 15, a second connecting member 16 and a wrench 17, wherein the second connecting member 16 is disposed above the connecting portion 4, a through groove 19 is vertically formed in a side surface of the second connecting member, the first connecting member 15 penetrates through the connecting portion 4, a lower end of the first connecting member 15 is connected to the suction cup 14, an upper end of the first connecting member 15 is sleeved inside the second connecting member 16, the wrench 17 is clamped outside the second connecting member 16, a connecting rod 18 is disposed in the first connecting member 15, the connecting rod 18 penetrates through the through groove 19, the first connecting member 15 and the wrench 17, and the connecting rod 18 is connected to.

The working principle of the embodiment is as follows: firstly, the whole device is vertically arranged on an experiment platform, the initial positions of the wrenches 17 are vertical, the suckers 14 on two sides of the support 1 are pressed to be in full contact with the experiment platform, air is exhausted, and then the wrenches 17 are pressed down towards two sides simultaneously, so that the connection between the suckers 14 and the experiment platform is tighter;

after the device is erected, the accommodating part 5 of the bracket 1, the gap between the experiment platform and the sphere 2 is used for accommodating the hand of the subject, specifically, the palm of the subject is upward in a relaxed state, the subject penetrates through the gap, the fingers are slightly bent and relaxed (an action about to hold the sphere 2 is performed), the locking piece 7 is initially in an unlocked state (namely, the guide post 6 can rotate or move up and down relative to the guide sleeve 8), the guide post 6 is rotated, the guide post 6 drives the sphere 2 to rotate until the key 9 on the sphere 2 is aligned with the finger to be tested, the guide post 6 can also move up and down until the key 9 on the sphere 2 is aligned with the finger to be tested, then the guide post 6 is locked by the locking piece 7 to prevent the guide post from rotating or displacing again, the locking piece 7 is sleeved outside the guide post 6 and then moves down to the guide sleeve 8 until the inclined plane of the inner surface of the upper end of the locking piece 7 is overlapped with, the clamping jaws 12 tightly hold the guide post 6 to prevent the guide post 6 from rotating or moving up and down, and further, internal threads can be arranged on the inner surface of the lower end of the locking piece 7, and corresponding external threads are arranged at the corresponding positions of the guide sleeve 8 to further play a locking role;

after the height of the sphere 2 is adjusted and the keys 9 face to each other, the fingers of the testee to be tested are lightly put on the keys 9 of the sphere 2, and the other fingers and the palm lightly hold the sphere 2, so that the human muscle reaction experiment can be started.

The finger force sensor provided by the embodiment is used for carrying out the experiment, so that the hand of a subject can be well supported, the interference of 'pseudo-mental fatigue' and the like caused by the involuntary action of the human body in the detection process can be prevented, and the accuracy of the measurement result is improved; the size of the sphere 2 and the size of the bracket 1 are reasonably designed according to hand data of hundreds of testees, the holding feeling is comfortable, and the bracket 1 cannot cause interference to fingers; the device can be easily fixed on a smooth surface such as an experiment platform and the like through the suckers 14 on the two sides, so that the device can be fixed or moved conveniently without damage, and is more environment-friendly and reusable compared with the prior art for fixing the adhesive tape; the sphere 2 can rotate 360 degrees to respectively adapt to 5 fingers to carry out experiments at will; the ball 2 can be adjusted up and down to accommodate hand sizes of different subjects.

Example 2

A muscle response monitoring system comprises a finger force sensor, a stimulator for electrically stimulating forearm nerves, a collector for collecting data and a user terminal for receiving data in embodiment 1, wherein a tension and compression sensor 20 in the finger force sensor is in communication connection with the collector, the collector is in communication connection with the stimulator and the user terminal respectively, the type of the collector is BL-420N, and the user terminal can be a computer.

Specifically, the examinee slightly puts the finger to be tested on the key 9 of the ball 2 as in the method of embodiment 1, the other fingers and the palm naturally hold the ball 2, the stimulator is bound at the wrist along the long axis direction of the arm, and ensures that the two stimulation electrodes are completely attached to the skin, because the palm of the examinee is upward in the use process of the finger force sensor provided by the invention, the stimulation electrode at the wrist is also upward, so that the nerve position can be conveniently found in the experimental process, the stimulation electrode can be conveniently fixed, the stimulation electrode is not easy to fall off in the test process, the stimulator gives out stimulation to the examinee, the muscle of the corresponding finger to be tested after the examinee is stimulated reacts and presses the key 9, the sensor 20 is pulled and pressed to transmit the data to the collector, the collector receives, processes and stores the data, and transmits the data to the user terminal, to enable waveform monitoring.

The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A finger force sensor, comprising: including support (1), spheroid (2) and adjusting device (3), the both ends of support (1) are connecting portion (4), and the middle part is for holding portion (5), connecting portion (4) are used for being connected with the experiment platform, holding portion (5) are used for holding the hand of spheroid (2) and examinee, be equipped with button (9) on spheroid (2), be equipped with on button (9) and be used for receiving drawing of finger reaction and press sensor (20), adjusting device (3) both are used for driving spheroid (2) and go up and down, rotate, are used for fixed spheroid (2) position again.

2. A finger force sensor according to claim 1, wherein: adjusting device (3) are including guide post (6), uide bushing (8) and locking piece (7), guide post (6) pass receiving portion (5) and are connected directly over spheroid (2), guide post (6) outside is equipped with uide bushing (8), guide post (6) are rotatable, slidable in uide bushing (8), uide bushing (8) outside is connected with support (1), locking piece (7) are used for locking guide post (6) and uide bushing (8) and restrict its relative motion that takes place.

3. A finger force sensor according to claim 2, wherein: uide bushing (8) are including the cover body (11) and jack catch (12), guide post (6) outside is located to the cover body (11) cover, the fixed connection can be dismantled with holding portion (5) to the cover body (11), jack catch (12) are located cover body (11) one end for cooperate with locking piece (7) in order to restrict guide post (6) and uide bushing (8) and take place relative motion.

4. A finger force sensor according to claim 3, wherein: the jack catch (12) comprises a plurality of claw pieces circumferentially arranged at the upper end part of the sleeve body (11), and the upper end part of each claw piece is an inclined plane.

5. A finger force sensor according to claim 4, wherein: the locking piece (7) is a hollow cylinder, and the inner surface of the upper end of the hollow cylinder is provided with an inclined surface matched with the claw piece.

6. A finger force sensor according to claim 1, wherein: the pull-press sensor (20) is arranged on the mounting seat (21), the mounting seat (21) is arranged inside the sphere (2), and the key (9) is connected with the pull-press sensor (20).

7. A finger force sensor according to claim 1, wherein: connecting portion (4) are connected with the experiment platform through connecting device (13), connecting device (13) are including locating sucking disc (14) of connecting portion (4) bottom surface.

8. A finger force sensor according to claim 7, wherein: connecting device (13) still includes connecting piece (15), connecting piece two (16) and spanner (17), connecting portion (4) top is located in connecting piece two (16), and logical groove (19) have been seted up to the side, connecting piece one (15) run through connecting portion (4) are connected with sucking disc (14), inside connecting piece two (16) were located to the upper end cover of connecting piece one (15), spanner (17) press from both sides and locate connecting piece two (16) outsidely, be equipped with connecting rod (18) in connecting piece one (15), connecting rod (18) run through logical groove (19), connecting piece one (15) and spanner (17), connecting rod (18) are connected with the eccentric position of spanner (17).

9. A muscle response monitoring system, comprising: comprising a finger force sensor according to any one of claims 1-8, a stimulator for electrically stimulating the nerves of the forearm, a collector for collecting data, and a user terminal for receiving data, wherein the tension and compression sensor (20) of the finger force sensor is in communication connection with the collector, and the collector is in communication connection with the stimulator and the user terminal respectively.

10. A muscle response monitoring system according to claim 9, wherein: the type of the collector is BL-420N.