CN113057618A - Muscle sound signal detection device with impedance detection function - Google Patents
Muscle sound signal detection device with impedance detection function Download PDFInfo
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- CN113057618A CN113057618A CN202110325993.XA CN202110325993A CN113057618A CN 113057618 A CN113057618 A CN 113057618A CN 202110325993 A CN202110325993 A CN 202110325993A CN 113057618 A CN113057618 A CN 113057618A
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- 238000001514 detection method Methods 0.000 title claims abstract description 62
- 210000003205 muscle Anatomy 0.000 title claims abstract description 37
- 230000005236 sound signal Effects 0.000 title claims abstract description 15
- 230000005284 excitation Effects 0.000 claims abstract description 34
- 238000012545 processing Methods 0.000 claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 16
- 206010044565 Tremor Diseases 0.000 claims abstract description 15
- 230000006870 function Effects 0.000 claims abstract description 13
- 230000004044 response Effects 0.000 claims abstract description 7
- 230000008447 perception Effects 0.000 claims abstract description 6
- 230000000638 stimulation Effects 0.000 claims abstract description 5
- 238000003708 edge detection Methods 0.000 claims description 7
- 239000003086 colorant Substances 0.000 claims description 2
- 230000001114 myogenic effect Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 7
- 230000003183 myoelectrical effect Effects 0.000 description 6
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/053—Measuring electrical impedance or conductance of a portion of the body
- A61B5/0531—Measuring skin impedance
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6802—Sensor mounted on worn items
- A61B5/681—Wristwatch-type devices
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B7/00—Instruments for auscultation
- A61B7/02—Stethoscopes
- A61B7/04—Electric stethoscopes
Abstract
The invention relates to a muscle sound signal detection device with an impedance detection function, which belongs to the technical field of electronic equipment and comprises a detection box and a bracelet, wherein the detection box is internally provided with: the excitation source module is used for outputting weak stimulation current lower than a human body perception threshold; the fixed array metal electrode is used for acting the weak excitation current which is output by the excitation source module and is lower than the human body perception threshold on the human body and collecting the human body response voltage; the tremor sensor is used for collecting muscle tone signals of human arms; the signal processing module is used for processing the detected voltage signal; the WIFI module is used for sending the impedance value obtained by calculation of the microcontroller to the intelligent terminal; the excitation source module is connected with the fixed array metal electrode, the signal processing module and the microcontroller into a loop, the microcontroller is further connected with the tremor sensor, the WIFI module and the status indicator lamp, and the power supply module supplies power to the modules. The invention judges the quality of the acquired myogenic signals according to the acquired impedance.
Description
Technical Field
The invention belongs to the technical field of electronic equipment, and relates to a muscle tone signal detection device with an impedance detection function.
Background
The muscle tone signal is a sound signal generated by the transverse vibration of muscle fibers caused by the contraction and relaxation of muscles when a biological limb executes an action instruction. The frequency range is 1-100Hz, and the myoelectric signal detection device has the characteristics of easiness in acquisition, strong interference resistance and the like relative to myoelectric signals, and based on the myoelectric signal detection device, the myoelectric signal detection device has wide application scenes including muscle function rehabilitation, serving as a muscle strength judgment basis of old people, a control source of an artificial limb, a rehabilitation robot application and the like, so that the design of the reliable myoelectric signal detection device has an important value for popularization of the application of the myoelectric signal.
Chinese patent CN111466945A discloses a muscle tone signal detection sensing device capable of automatically adjusting contact pressure, which comprises an acceleration-pressure sensor unit, a microprocessor, a serial bluetooth, a power module and an air sac bandage. The acceleration sensor is used for collecting muscle tone signals, the pressure sensor is used for collecting pressure between the bandage and the arm, and the pressure is regulated through the inflation and deflation of the air bag, so that the acceleration sensor collects the muscle tone signals with the best quality.
Chinese patent CN109171124A discloses a flesh tone signal wireless collection bracelet for sign language identification, which is formed by hinging a plastic shell and an elastic wrist strap, and is internally provided with a signal collection circuit board and a rechargeable lithium battery for muscle tone signal collection and WIFI data transmission, and the inner side of the bracelet is provided with four acceleration sensors for collecting flesh tone signals, and the position of the bracelet is adjustable.
The detection principle of the method is that mechanical vibration signals generated by stretching muscle fibers when skeletal muscles contract are conducted to the surface of skin through human tissues to be coupled with the sensor, the sensor can be in direct contact with the skin or be used for measurement through a separation garment, but the contact state of the sensor and the skin is a key link influencing energy coupling in the whole measurement process, when the sensor is in contact with the skin too tightly, pulse wave signals can be mistakenly acquired due to the increase of pressure, the acquired muscle signals are very weak when the sensor is in contact with the skin, and even information can be lost, so the contact state of the sensor and the skin can influence the detection quality of the muscle signals. Good muscle tone signals can be obtained only by proper pressure, but in the patent, although the position and pressure adjustment is realized, no quantifiable index exists, and the use process mainly depends on the experience of operators; meanwhile, in the detection of muscle sound signals of limb movements, the contact state of the sensor with the skin and muscles may change, and if an operator does not find that the detection quality of the signals is affected in time, the monitoring of the contact state of the sensor with the skin is very important for detecting the muscle sound signals.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a muscle sound signal detecting apparatus with an impedance detecting function.
In order to achieve the purpose, the invention provides the following technical scheme:
a muscle sound signal detection device with an impedance detection function comprises a detection box, wherein the detection box is fixed on an arm through a bracelet, and an excitation source module, a fixed array metal electrode, a tremor sensor, a signal processing module, a microcontroller, a WIFI module and a power supply module are arranged in the detection box; the excitation source module is connected with the fixed array metal electrode, the signal processing module and the microcontroller to form a loop, the microcontroller is also connected with the tremor sensor, the WIFI module and the status indicator lamp, and the power supply module supplies power to the modules;
the excitation source module is used for outputting weak stimulation current lower than a human body perception threshold;
the fixed array metal electrode is used for acting the weak excitation current which is output by the excitation source module and is lower than a human body perception threshold on a human body and collecting human body response voltage;
the tremor sensor is used for collecting muscle tone signals of human arms;
the signal processing module is used for processing the detected voltage signal;
and the WIFI module is used for sending the impedance value obtained by calculation of the microcontroller to the intelligent terminal.
Further, a status indicator light connected with the microcontroller is further included for reflecting different contact states between the skin and the sensor through different colors.
Further, the fixed array metal electrodes comprise excitation electrodes and detection electrodes, the excitation electrodes comprise a pair of positive and negative electrodes positioned at the bottom of the detection box, the detection electrodes comprise nine pairs of positive and negative electrodes, the bottom of the detection box is provided with 4 x 4 pairs of array detection electrodes, and the edges of the detection box are provided with a pair of edge detection electrodes.
Furthermore, the waveform, amplitude and frequency of the output signal of the excitation source module are controlled by the instruction sent by the microcontroller.
Furthermore, the power supply module is connected with an electric quantity calculating module and a charging port, and controls the power supply of the detection box through a power switch.
Further, the bracelet is the rubber bracelet of adjustable length, adjusts length through buckle and a plurality of fixed orificess.
The contact pressure is indirectly reflected by detecting the contact impedance between the acquisition device and the skin, and because the skin of the human body is not smooth, when the contact pressure between the electrode and the human body is changed from small to large, the closer the attaching degree between the electrode for detecting impedance and the skin is, the larger the contact area is, according to the formula of resistance law, where R is ρ L/S, the contact resistance of the electrode and the skin is inversely proportional to the contact area of the electrode and the skin, i.e., the larger the contact area, the smaller the contact resistance, when the electrodes distributed on the edge of the device are contacted with the skin due to the increase of the pressure, the edge impedance is reduced, the resistance value of the bottom electrode is reduced due to the increase of the contact area and the pressure, therefore, the quality of the collected muscular tone is the best when the electrodes distributed at the bottom of the device collect the minimum impedance values and reach the equilibrium among each other, and the electrodes at the edge of the device collect the maximum impedance values.
The invention has the beneficial effects that: this device detects the real-time impedance value between collection system and the human skin and then monitors the contact state of device and skin through fixed array metal electrode, but tremble sensor attached gathers flesh tone signal simultaneously on the electrode slice, its elasticity degree is adjusted through the buckle of adjustment bracelet, place collection system and can gather the flesh tone signal of relevant muscle on the muscle of difference, it reaches the minimum and reaches the equilibrium each other to show the impedance value that distributes to gather at the array detection electrode of device bottom when intelligent terminal, and the quality of the flesh tone signal of gathering when the impedance value of device edge is the biggest is best.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a functional block diagram of the structure of the apparatus of the present invention;
FIG. 2 is a block diagram of the apparatus of the present invention;
FIG. 3 is an expanded view of an array electrode of the device of the present invention;
FIG. 4 is a view showing the internal structure of the apparatus of the present invention;
FIG. 5 is a cross-sectional view of the apparatus of the present invention;
FIG. 6 is a diagram of an application scenario of the apparatus of the present invention;
FIG. 7 is a system flow diagram of the apparatus of the present invention;
FIGS. 8, 9 and 10 are practical views of the device of the present invention;
reference numerals: a. the11、A12Are respectively a first pairPositive and negative electrodes of the bottom detection electrode, A21、A22Positive and negative electrodes, A, respectively, of a second pair of bottom detection electrodes31、A32Positive and negative electrodes, A, respectively, of a third pair of bottom detection electrodes41、A42Positive and negative electrodes, A, respectively, of a fourth pair of bottom detection electrodes51、A52Positive and negative electrodes, A, respectively, of a fifth pair of bottom detection electrodes61、A62Positive and negative electrodes, A, respectively, of a sixth pair of bottom detection electrodes71、A72Positive and negative electrodes, A, respectively, of a seventh pair of bottom detection electrodes81、A82Positive and negative electrodes, A, respectively, of an eighth pair of bottom detection electrodes91、A92Positive and negative electrodes for exciting the electrodes, A101、A102Positive and negative electrodes which are edge detection electrodes. B1 is the rubber bracelet, B2 is the buckle, B3 is the fixed orifices, B4 is the plastic casing, B5 is the switch key, B6 is the status indicator lamp, B7 is the mouth that charges, B8 is the circuit board, B9 is the circuit board support, C1 is power module, C2 is the tremor sensor, C3 is microcontroller, C4 is the WIFI module, C5 is the excitation source module, C6 is signal processing module.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Referring to fig. 1 to 10, the invention provides a muscle tone signal detection device with an impedance detection function, which includes a rubber bracelet with adjustable length, a fixed array metal electrode, a status indicator lamp, an excitation source module, a tremor sensor, a signal processing module, a microcontroller, a WIFI module, and a power module. The functional diagram of the structural frame is shown in fig. 1, the fixed metal electrode comprises an excitation electrode and a detection electrode, the excitation electrode and the detection electrode are used for acting the current output by the excitation source module on a human body and collecting the response voltage of the human body, and the state indicator lamp is used for reflecting the greatly different contact states of the skin and the sensor; the tremor sensor is used for collecting muscle sound signals, the signal processing module is used for processing detected response voltage signals, the tremor sensor mainly comprises an amplifying and filtering circuit, and the microcontroller is used for controlling stimulation parameters of the excitation source module, calculating detected impedance values and battery electric quantity and sending the parameters to the intelligent terminal through the WIFI module. Pressure and area of contact between elasticity degree control electrode piece and the arm through adjusting the bracelet, thereby the adjustment impedance value, edge detection electrode does not contact skin during slight pressure, the impedance value is the biggest, bottom array electrode's contact pressure is less, the impedance value is great, the impedance value that bottom array electrode detected distributes stably balanced during suitable intensity pressure, edge detection electrode's impedance value is great, edge detection electrode contacts skin during great intensity pressure, the impedance value will diminish so that the contact area increase, so reach minimumly and comparatively balanced each other when the impedance value that the electrode of distribution bottom the device was gathered, and the flesh tone signal quality of gathering when the impedance value of device edge is the biggest is the best.
FIG. 2 is a view showing the structure of an apparatus of the present invention, A101-A102Respectively, an excitation electrode and a detection electrode, as shown in the expanded view of FIG. 3, wherein A11-A82The array detection electrodes with 4 x 4 at the bottom respectively, and the balance of resistance values can judge whether the stress is uniform, A91、A92Respectively positive and negative electrodes of the excitation electrode for applying an excitation signal generated by the excitation power supply to the skin of a human body, A101、A102The impedance values of the positive and negative electrodes of the edge detection electrode are used for judging the contact tightness degree of the detection device with skin and muscle, the edge impedance value is reduced when the contact pressure is overlarge, the edge impedance value is large when the contact pressure is too small, but the impedance values of the bottom array detection electrodes are unbalanced, and the edge impedance value is maximum and the impedance values of the bottom array detection electrodes are balanced when the contact pressure is proper. B1 is the rubber bracelet, and B2 is the buckle, and B3 is the fixed orifices, and the buckle has 3, and the fixed orifices has 9, the length of the adjustable bracelet of cooperation through buckle and fixed orifices. B4 is a plastic case, which is insulating and prevents static electricity from being generated. B5 is a power switch for starting or cutting off the power supply of the device by long pressing. B6 is status indicator lamp, and the contact pressure when flesh sound detection device and skin is too big to be red, and the contact pressure is orange when too little, and is green when the contact pressure is suitable, and the user can be according to the different colour adjustment rubber bracelet's of status indicator lamp elasticity degree. B7 is a charging port for charging the device.
Fig. 4 and 5 are an internal structural view and a sectional view of the device of the present invention, respectively, B8 is a circuit board, B9 is a circuit board support, for supporting the circuit board, C1 is a power module, which is composed of rechargeable lithium batteries, for supplying power to the entire circuit module, the battery power calculation function can calculate the residual power of the lithium battery and send the residual power to the intelligent terminal, a user can charge the device in time according to the power displayed by the intelligent terminal, the C2 is a tremor sensor which is used for collecting muscle tone signals generated when arm muscles vibrate, the C4 is a WIFI module which is used for sending an impedance value calculated by a microcontroller to the intelligent terminal, the C5 is an excitation source module which is used for outputting weak excitation current acting on a human body, and the C6 is a signal processing module which is used for processing a human body response voltage signal detected by a fixed array metal electrode; c3 is a microcontroller. The microcontroller is connected with the excitation source module, the signal processing module, the power supply module, the tremor sensor and the WIFI module and is used for calculating the impedance value detected by the fixed array metal electrode and sending the impedance value to the intelligent terminal through the WIFI module.
The device can act on any muscle of the upper limb of a human body, the application scene of the device in practice is shown in figure 6, taking extensor carpi radialis longus as an example, the flow chart of the measurement process is shown in figure 7, firstly, alcohol is used for disinfecting the muscle to be measured during measurement, the device is worn after the alcohol volatilizes, a fixed metal electrode is accurately placed on the muscle to be measured, the measurement device is fixed through matching of a buckle on a rubber bracelet and a fixed hole, a power switch key is pressed for a long time to start a measurement system, at the moment, an excitation source module starts to output constant stimulation current, an array detection electrode starts to collect response voltage of the human body, a microcontroller performs real-time impedance calculation, when the edge impedance value does not reach the maximum value, the contact pressure of the device and the skin is too large, the actual state is shown in figure 10, at the moment, a state indicator lamp is red, and a user starts to adjust the tightness degree of the bracelet until the edge impedance value reaches the maximum value, the Whether the impedance is balanced, it is too little to represent contact pressure when unbalanced, its actual state is as shown in fig. 8, state indicator is orange this moment, continue to adjust the bracelet until the bottom impedance value reaches the equilibrium, its actual state is as shown in fig. 9, state indicator is green this moment, it is suitable to represent contact pressure, the flesh tone signal quality of gathering this moment is best, the user can adjust the bracelet according to the colour of state indicator in whole signal acquisition process, long press the switch key after the measurement and close the system.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (6)
1. A muscle sound signal detecting apparatus having an impedance detecting function, characterized in that: the hand-operated vibration detection device comprises a detection box, wherein the detection box is fixed on an arm through a bracelet, and an excitation source module, a fixed array metal electrode, a tremor sensor, a signal processing module, a microcontroller, a WIFI module and a power module are arranged in the detection box; the excitation source module is connected with the fixed array metal electrode, the signal processing module and the microcontroller to form a loop, the microcontroller is also connected with the tremor sensor, the WIFI module and the status indicator lamp, and the power supply module supplies power to the modules;
the excitation source module is used for outputting weak stimulation current lower than a human body perception threshold;
the fixed array metal electrode is used for acting the weak excitation current which is output by the excitation source module and is lower than a human body perception threshold on a human body and collecting human body response voltage;
the tremor sensor is used for collecting muscle tone signals of human arms;
the signal processing module is used for processing the detected voltage signal;
and the WIFI module is used for sending the impedance value obtained by calculation of the microcontroller to the intelligent terminal.
2. The muscle sound signal detecting apparatus having an impedance detecting function according to claim 1, wherein: and the status indicator lamp is connected with the microcontroller and is used for reflecting different contact statuses between the skin and the sensor through different colors.
3. The muscle sound signal detecting apparatus having an impedance detecting function according to claim 1, wherein: the fixed array metal electrode comprises an excitation electrode and a detection electrode, the excitation electrode comprises a pair of positive and negative electrodes positioned at the bottom of the detection box, the detection electrode comprises nine pairs of positive and negative electrodes, the bottom of the detection box is 4 x 4 eight pairs of array detection electrodes, and a pair of edge detection electrodes is arranged at the edge of the detection box.
4. The muscle sound signal detecting apparatus having an impedance detecting function according to claim 1, wherein: the waveform, amplitude and frequency of the output signal of the excitation source module are controlled by the instruction sent by the microcontroller.
5. The muscle sound signal detecting apparatus having an impedance detecting function according to claim 1, wherein: the power supply module is connected with an electric quantity calculating module and a charging port and controls the power supply of the detection box through a power switch.
6. The muscle sound signal detecting apparatus having an impedance detecting function according to claim 1, wherein: the bracelet is the rubber bracelet of adjustable length, adjusts length through buckle and a plurality of fixed orificess.
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| CN202110325993.XA CN113057618A (en) | 2021-03-26 | 2021-03-26 | Muscle sound signal detection device with impedance detection function |
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| CN202110325993.XA CN113057618A (en) | 2021-03-26 | 2021-03-26 | Muscle sound signal detection device with impedance detection function |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104850231A (en) * | 2015-05-25 | 2015-08-19 | 上海交通大学 | Man-machine interface system based on fusion of surface electromyography (EMG) and myocrismus signals |
| CN111110234A (en) * | 2019-12-11 | 2020-05-08 | 广州医科大学 | Skin jaundice detector and detection method |
| CN111297354A (en) * | 2020-02-17 | 2020-06-19 | 中国人民解放军军事科学院军事医学研究院 | Myoelectric and pressure combined hybrid sensor system with self-calibration function |
| CN111466945A (en) * | 2020-04-26 | 2020-07-31 | 重庆大学 | Muscle sound signal detection sensing device capable of automatically adjusting contact pressure |
| GB202010270D0 (en) * | 2020-07-03 | 2020-08-19 | Imperial College Innovations Ltd | A mechanomyography apparatus and associated methods |
-
2021
- 2021-03-26 CN CN202110325993.XA patent/CN113057618A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104850231A (en) * | 2015-05-25 | 2015-08-19 | 上海交通大学 | Man-machine interface system based on fusion of surface electromyography (EMG) and myocrismus signals |
| CN111110234A (en) * | 2019-12-11 | 2020-05-08 | 广州医科大学 | Skin jaundice detector and detection method |
| CN111297354A (en) * | 2020-02-17 | 2020-06-19 | 中国人民解放军军事科学院军事医学研究院 | Myoelectric and pressure combined hybrid sensor system with self-calibration function |
| CN111466945A (en) * | 2020-04-26 | 2020-07-31 | 重庆大学 | Muscle sound signal detection sensing device capable of automatically adjusting contact pressure |
| GB202010270D0 (en) * | 2020-07-03 | 2020-08-19 | Imperial College Innovations Ltd | A mechanomyography apparatus and associated methods |
Non-Patent Citations (1)
| Title |
|---|
| 李章勇等, 重庆大学出版社 * |
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