CN106137188A - A kind of electromyographic signal transmission method and system - Google Patents
A kind of electromyographic signal transmission method and system Download PDFInfo
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- CN106137188A CN106137188A CN201510167279.7A CN201510167279A CN106137188A CN 106137188 A CN106137188 A CN 106137188A CN 201510167279 A CN201510167279 A CN 201510167279A CN 106137188 A CN106137188 A CN 106137188A
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Abstract
The invention discloses a kind of electromyographic signal transmission method and system.A kind of electromyographic signal transmission method includes: utilize sensor device to receive the electromyographic signal from human body；Wherein, described sensor device includes four electrodes being arranged side by side, and middle two electrodes sensing is from the electromyographic signal of human body, and produces analog electronic signal, two, two ends electrode ground connection；Described analog electronic signal is amplified and filters, and obtained signal is converted to digital signal；Described digital signal is processed, obtains the signal value of maximum；By being wirelessly transferred, described output signal is transferred to mobile terminal.A kind of electromyographic signal transmission system includes: sensor unit, amplification and filter unit, digital signal processing unit and transmission unit.
Description
Technical field
The present invention relates to sensor field, particularly to a kind of electromyographic signal transmission method and system.
Background technology
In gymnasium or family fitness activity, body builder generally by fitness or oneself the corresponding fitness goals of formulation and scheme, then reaches this target by the time of a few weeks or months.During the body-building of this long period, body builder's needs could assess the effect of body-building scheme completing the whole body-building cycle, it is impossible to enough within a short period of time or the timely quality to body-building scheme carry out the assessment of science and make corresponding correction.Such as when using certain body-building apparatus to be trained, either body builder or fitness can not sufficiently accurately assess the impact on health of the action instantly.
Equally, during athletes, patients with cerebral apoplexy, old people etc. are needed health a part to carry out rehabilitation and carries out specific training, there is also similar problem, i.e. the training activity carried out can not be carried out the assessment of instant feedback and science.
A lot of sign of human body can be acquired by sensor with the analysis for human health status carries out science.In various sensor technologies, electromyographic signal sensor can be used to measure the active state of human muscle.As a rule, electromyographic signal sensor includes a pair both positive and negative polarity and a ground electrode, but the sensor of this form is when human skin gathers signal, and stronger noise signal can affect the acquisition precision of sensor.So, the electromyographic signal sensor of more high-quality and precision and the design of signal transmission system are the most necessary.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of electromyographic signal transmission method and system, to improve the precision of electromyographic signal sensing system.
The technical solution adopted in the present invention is:
A kind of electromyographic signal transmission method, the method includes:
-utilize sensor device to receive the electromyographic signal from human body；Wherein, described sensor device includes four electrodes being arranged side by side, and middle two electrodes sensing is from the electromyographic signal of human body, and produces analog electronic signal, two, two ends electrode ground connection；
-described analog electronic signal is amplified and filters, and obtained signal is converted to digital signal；
-described analog electronic signal is carried out sample conversion is digital signal, processes digital signal, obtains the signal value of maximum；
-pass through to be wirelessly transferred described output signal is transferred to mobile terminal.
Preferably, described electrode coats with silver.
It is preferred that described electrode coats with the silver that purity is 99.99%.
According to a preferred embodiment, described described analog electronic signal be amplified and filter, specifically include:
Amplifier is utilized to be filtered by described analog electronic signal and amplify.
According to a preferred embodiment, described analog electronic signal is amplified and filters, specifically includes:
Utilize and include that described analog electronic signal is amplified and filters by instrument amplifier, DC bias circuit and the amplification of operational amplifier composition and filter circuit；
Wherein, instrument amplifier is the instrument amplifier of JFET input, and JFET is junction field effect transistor；Operational amplifier is cmos operational amplifier, and CMOS is complementary metal oxide semiconductors (CMOS).
According to a preferred embodiment, described described digital signal is processed, obtains maximum signal level, specifically include:
Utilizing and described signal carries out sample conversion for digital signal with the Bluetooth chip of single-chip microcomputer, sample frequency is 1000Hz.To gained Digital Signal Processing, obtain maximum signal level.
According to a preferred embodiment, described in the method that is wirelessly transferred be Bluetooth transmission.
According to a preferred embodiment, described mobile terminal is smart mobile phone.
Present invention also offers a kind of electromyographic signal transmission system, this system includes:
Sensor unit, for utilizing sensor device to receive the electromyographic signal from human body；Wherein, described sensor device includes four electrodes being arranged side by side, and middle two electrodes sensing is from the electromyographic signal of human body, and produces analog electronic signal, two, two ends electrode ground connection；
Amplify and filter unit, for described analog electronic signal is amplified and filters；
Digital signal acquiring and processing unit, for being digital signal to described analog electronic signal sample conversion, carry out process to the digital signal changed and obtain maximum signal level；
Transmission unit, for being transferred to mobile terminal by described output signal by being wirelessly transferred.
Preferably, the electrode used in described sensor unit coats with silver.
It is preferred that the electrode used in described sensor unit coats with the silver that purity is 99.99%.
According to a preferred embodiment, described analog electronic signal is amplified and filters, specifically includes by described amplifying unit:
Amplifier is utilized to be filtered by described analog electronic signal and amplify.
According to a preferred embodiment, described analog electronic signal is amplified and filters, specifically includes by described amplifying unit:
Utilize and include that described analog electronic signal is amplified and filters by instrument amplifier, DC bias circuit and the amplification of operational amplifier composition and filter circuit；
Wherein, instrument amplifier is the instrument amplifier of JFET input, and JFET is junction field effect transistor；Operational amplifier is cmos operational amplifier, and CMOS is complementary metal oxide semiconductors (CMOS).
According to a preferred embodiment, described digital signal processing unit specifically for:
Utilizing and described signal carries out sample conversion for digital signal with the Bluetooth chip of single-chip microcomputer, sample frequency is 1000Hz.To gained Digital Signal Processing, obtain maximum signal level.
According to a preferred embodiment, the radio transmitting method that described transmission unit uses is Bluetooth transmission.
According to a preferred embodiment, described output signal is transferred to smart mobile phone by described transmission unit.
In the present invention, four electrodes on sensor device are arranged side by side, and two of which electrode is used for gathering electromyographic signal, the signal of two other ground electrode, help system can preferably remove noise, improve the signal to noise ratio of electromyographic signal, thus be greatly improved the precision of sensing system.
Accompanying drawing explanation
Fig. 1 is the flow chart of electromyographic signal transmission method provided by the present invention；
Fig. 2 is the schematic diagram of a kind of arrangement of sensor device provided by the present invention；
Fig. 3 is the circuit diagram of pre-amplification circuit provided by the present invention；
Fig. 4 is the circuit diagram of DC bias circuit provided by the present invention；
Fig. 5 is other filtering provided by the present invention and amplifying circuit schematic diagram；
Fig. 6 is the schematic diagram of an actual application of method provided by the present invention；
Fig. 7 is the structural representation of electromyographic signal provided by the present invention transmission system；
Fig. 8 is the schematic diagram of an actual application of electromyographic signal provided by the present invention transmission system.Detailed description of the invention
Below in conjunction with the accompanying drawings, the present invention is described further.
As it is shown in figure 1, the invention provides a kind of electromyographic signal transmission method, including:
S101, utilizes sensor device to receive the electromyographic signal from human body；Wherein, described sensor device includes four electrodes being arranged side by side, and middle two electrodes sensing is from the electromyographic signal of human body, and produces analog electronic signal, two, two ends electrode ground connection；
Myoelectricity (EMG) signal is activated by central nervous system and controls, and on the surface of limbs, the scope of the EMG signal of record is represented as the voltage of-5 to+5mV.By the analysis to electromyographic signal, it is possible to learn the health of people, and then utilize the result obtained by analyzing that the regulation of the individual person is instructed.
Nowadays, the detection of electromyographic signal is carried out generally by sensor.In the present invention, utilize and include that electromyographic signal is detected by the sensor device of four electrodes.Wherein, four electrodes are arranged side by side on sensor device.
A lot of medical treatment & health mechanisms the most also use similar method to detect electromyographic signal, but the sensor device used in these mechanisms generally comprises three electrodes, two electrode gap arrangements, thereunder arranges the 3rd electrode, this electrode ground connection.
Compared with prior art, four electrodes are used to be arranged side by side on sensor device in the present invention, two of which electrode is used for gathering electromyographic signal, the signal of two other ground electrode, help system can preferably remove noise, improve the signal to noise ratio of electromyographic signal, thus be greatly improved the precision of sensing system.
Electrode in the present invention can be coated with silver, preferably coats with the silver that purity is 99.99%, it is possible to preferably gather signal, improve efficiency.
It is understood that sensor of the invention device can be placed in any position on human body skin.Fig. 2 schematically provides a concrete example, and wherein sensor device is attached on the forearm 26 of people.In Fig. 2,20 is sensor device, and it is included in a concrete equipment 25, such as, can be electronic hand ring, the concrete configuration of sensor device carried out schematic expression with expanded view, and 21,22,23 and 24 is four electrodes being arranged side by side.
Sensor of the invention device can by any way with the contact skin of people.Such as, adhesive tape 27 grade can be used to paste sensor device with on human body skin, or sensor device can be integrated in the equipment such as Intelligent bracelet, this equipment is close to on human body skin, sensor device can also be allowed to play a role, and its concrete form is the present invention do not limit.
S102, is amplified described analog electronic signal and filters；
Fig. 3 to Fig. 5 shows the physical circuit figure being filtered analog electronic signal and amplifying.It should be noted that the present invention is not limited to the circuit diagram that this is concrete, it is possible to use any existing method performs this step.
In figure 3, amplifying circuit includes filter circuit 31 and JFET(Junction
Field-Effect Transistor, junction field effect transistor) the instrument amplifier 32(such as AD8220 shown in Fig. 3 that inputs).The dual power supply of this amplifier utilization ± 3.3V, i.e. 33 and 34 power, and obtain the signal of output at 35.It is then possible to the output obtained is accessed analog-digital converter be simulated electronic signal and the conversion of digital signal, it is possible to use any kind of analog-digital converter completes, and the present invention is without limitation.
Preferably, using the amplifying circuit in Fig. 3 as pre-amplification circuit, and the output that circuit illustrated in fig. 3 obtains can be biased, as shown in Figure 4.Circuit diagram shown in Fig. 4 includes that the power supply utilizing 3.3V is powered, and uses the reference voltage chip 41 of REF3012 type.The voltage of the 1.25V obtained, for biasing the output obtained by Fig. 3, specifically, is to add at the output of pre-amplification circuit by this voltage, obtains exporting 42.
More preferably, so that to result more readability and be easily processed, as it is shown in figure 5, the output 42 obtained in the output 35 and Fig. 4 that can be obtained by Fig. 3 inputs the input of circuit shown in Fig. 5 respectively, utilize this filtering and amplifying circuit that two results are processed.Circuit in Fig. 5 includes a CMOS(Complementary Metal Oxide Semiconductor, complementary metal oxide semiconductors (CMOS)) operational amplifier 51, it, for the output 42 of the output 35 and Fig. 4 of Fig. 3 being combined, obtains exporting 52.Cmos operational amplifier 51 is powered, as shown in Figure 5 with the power supply of ± 3.3V.After being amplified by signal, the signal obtained can be carried out digital-to-analogue conversion, analog electronic signal is converted to digital signal in the present invention, this can be completed by existing any digital to analog converter, and the present invention is without limitation.
S103, processes described digital signal, obtains the signal value of maximum；
In the present invention, step S103 can be completed with the Bluetooth chip of single-chip microcomputer by one.Except comprising usual micro-process function and sampling functions in this chip single-chip microcomputer.
Digital signal processes, and obtains maximum signal level.In the present invention, sample frequency is the bandwidth that the sample frequency of 1000Hz, 1000kHz meets electromyographic signal.
S104, is transferred to mobile terminal by being wirelessly transferred by described output signal,；
In the present invention, the mode being wirelessly transferred can be any prior art, does not limits.The present invention preferably utilizes Bluetooth transmission that output signal is transferred to mobile terminal, and mobile terminal can be smart mobile phone, panel computer etc. herein.
Mobile terminal for received signal with built-in various application programs, can obtain the various results relevant to health, and then the life of people can be played directive function.As shown in Figure 6,61 it is mobile terminal, herein for smart mobile phone, the most built-in application program 62.User can first determine which position need to take exercise or check is, e.g. left hand arm in Fig. 6.Now this information can be inputted application program by user, and corresponding muscle is tempered or checked at which position that application program can instruct user that concrete equipment (including sensor device) 64 is positioned over arm, and such as 63.After sensor device places, just can start step S101-S104, follow the tracks of the muscular movement of user, user is instructed.
Present invention also offers a kind of electromyographic signal transmission system, as it is shown in fig. 7, this system may include that
Sensor unit 701, for utilizing sensor device to receive the electromyographic signal from human body；Wherein, described sensor device includes four electrodes being arranged side by side, and middle two electrodes sensing is from the electromyographic signal of human body, and produces analog electronic signal, two, two ends electrode ground connection；
Amplifying unit and filtering 702, for being amplified described analog electronic signal and filter；
Digital signal processing unit 703, for sampling described digital signal and processing, obtains maximum signal level；
Transmission unit 704, for being transferred to mobile terminal by described output signal by being wirelessly transferred.
Mobile terminal can be with built-in application program, for instructing exercise and the health status of user.
Fig. 8 schematically provides the system of the present invention and the interaction of mobile terminal.In Fig. 8,81 is the system of the present invention, which includes 701,702,703 and 704,82 for being wirelessly transferred, can be Bluetooth transmission in the present invention, and 83 is mobile terminal, and 84 is built-in application program, and 85 is the biological information of user.
As shown in Figure 8, the system that the present invention provides, it is possible to the higher electromyographic signal of acquisition precision, and be prone to user and carry, carry out recovery exercising for individual subscriber or physical exercise provides and instructs.
Claims (16)
1. an electromyographic signal transmission method, it is characterised in that the method includes:
-utilize sensor device to receive the electromyographic signal from human body；Wherein, described sensor device includes four electrodes being arranged side by side, and middle two electrodes sensing is from the electromyographic signal of human body, and produces analog electronic signal, two, two ends electrode ground connection；
-described analog electronic signal is amplified and filters；
-described analog electronic signal is carried out sample conversion is digital signal, and gained digital signal is processed, obtain the signal value of maximum；
-pass through to be wirelessly transferred described output signal is transferred to mobile terminal.
Method the most according to claim 1, it is characterised in that described electrode coats with silver.
Method the most according to claim 1, it is characterised in that described electrode coats with the silver that purity is 99.99%.
Method the most according to claim 1, it is characterised in that described analog electronic signal is amplified and filters, specifically includes:
Amplifier is utilized to be filtered by described analog electronic signal and amplify.
5., according to the method described in aforementioned any one claim, it is characterised in that described described analog electronic signal is amplified and filters, specifically include:
Utilize and include that described analog electronic signal is amplified and filters by instrument amplifier, DC bias circuit and the amplification of operational amplifier composition and filter circuit；
Wherein, instrument amplifier is the instrument amplifier of JFET input, and JFET is junction field effect transistor；Operational amplifier is cmos operational amplifier, and CMOS is complementary metal oxide semiconductors (CMOS).
6., according to the method described in aforementioned any one claim, it is characterised in that described analog electronic signal is sampled and processes, obtain the signal value of maximum, specifically include:
Utilizing and described analog electronic signal carries out sample conversion for digital signal with the Bluetooth chip of single-chip microcomputer, sample frequency is 1000Hz, processes gained digital signal, obtains maximum signal level.
Method the most according to claim 1, it is characterised in that described in the method that is wirelessly transferred be Bluetooth transmission or wireless network (WiFi) transmission.
Method the most according to claim 1, it is characterised in that described mobile terminal is smart mobile phone or panel computer etc..
9. an electromyographic signal transmission system, it is characterised in that this system includes:
Sensor unit, for utilizing sensor device to receive the electromyographic signal from human body；Wherein, described sensor device includes four electrodes being arranged side by side, and middle two electrodes sensing is from the electromyographic signal of human body, and produces analog electronic signal, two, two ends electrode ground connection；
Amplify and filter unit, for described analog electronic signal is amplified and filters；
Digital signal acquiring and processing unit, be digital signal for described amplification and filtered analog electronic signal are carried out sample conversion, processes the digital signal of conversion, obtains the signal value of maximum；
Transmission unit, for being transferred to mobile terminal by described output signal by being wirelessly transferred.
System the most according to claim 9, it is characterised in that the electrode used in described sensor unit coats with silver.
11. systems according to claim 9, it is characterised in that the electrode used in described sensor unit coats with the silver that purity is 99.99%.
12. systems according to claim 9, it is characterised in that described analog electronic signal is amplified and filters by described amplification and filter unit, specifically includes:
Amplifier is utilized to be filtered by described analog electronic signal and amplify.
13. according to the system according to any one of claim 9 to 12, it is characterised in that described analog electronic signal is amplified by described amplifying unit, specifically includes:
Utilize and include that described analog electronic signal is amplified and filters by instrument amplifier, DC bias circuit and the amplification of operational amplifier composition and filter circuit；
Wherein, instrument amplifier is the instrument amplifier of JFET input, and JFET is junction field effect transistor；Operational amplifier is cmos operational amplifier, and CMOS is complementary metal oxide semiconductors (CMOS).
14. according to the system according to any one of claim 9 to 14, it is characterised in that described digital signal processing unit specifically for:
Utilizing and described signal carries out sample conversion for digital signal with the Bluetooth chip of single-chip microcomputer, sample frequency is 1000Hz, processes the digital signal of conversion, obtains the signal value of maximum.
15. systems according to claim 9, it is characterised in that the radio transmitting method that described transmission unit uses is Bluetooth transmission or wireless network (WiFi) transmission.
16. systems according to claim 9, it is characterised in that described output signal is transferred to smart mobile phone or panel computer etc. by described transmission unit.
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| CN201510167279.7A CN106137188A (en) | 2015-04-10 | 2015-04-10 | A kind of electromyographic signal transmission method and system |
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| CN101981533A (en) * | 2008-07-11 | 2011-02-23 | 松下电器产业株式会社 | Interface system using mastication myoelectricity |
| CN102139139A (en) * | 2011-01-13 | 2011-08-03 | 中国医学科学院生物医学工程研究所 | Myoelectric feedback control electric stimulation device and control method thereof |
| CN102488514A (en) * | 2011-12-09 | 2012-06-13 | 天津大学 | Method for analyzing relativity between electroencephalograph and myoelectricity based on autonomous and stimulation movement modalities |
| CN102846317A (en) * | 2012-07-18 | 2013-01-02 | 上海交通大学 | Wearing-type electromyographic signal acquisition system |
| CN102961132A (en) * | 2012-11-26 | 2013-03-13 | 重庆绿色智能技术研究院 | Wireless surface electromyographic signal pickup device and method and front-end compression method |
| CN203290900U (en) * | 2013-06-06 | 2013-11-20 | 郑义 | Wireless surface myoelectricity collecting instrument based on Bluetooth |
| CN103750836A (en) * | 2014-01-14 | 2014-04-30 | 优尔美有限公司 | Wearable myoelectricity instrument |
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2015
- 2015-04-10 CN CN201510167279.7A patent/CN106137188A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101981533A (en) * | 2008-07-11 | 2011-02-23 | 松下电器产业株式会社 | Interface system using mastication myoelectricity |
| CN102139139A (en) * | 2011-01-13 | 2011-08-03 | 中国医学科学院生物医学工程研究所 | Myoelectric feedback control electric stimulation device and control method thereof |
| CN102488514A (en) * | 2011-12-09 | 2012-06-13 | 天津大学 | Method for analyzing relativity between electroencephalograph and myoelectricity based on autonomous and stimulation movement modalities |
| CN102846317A (en) * | 2012-07-18 | 2013-01-02 | 上海交通大学 | Wearing-type electromyographic signal acquisition system |
| CN102961132A (en) * | 2012-11-26 | 2013-03-13 | 重庆绿色智能技术研究院 | Wireless surface electromyographic signal pickup device and method and front-end compression method |
| CN203290900U (en) * | 2013-06-06 | 2013-11-20 | 郑义 | Wireless surface myoelectricity collecting instrument based on Bluetooth |
| CN103750836A (en) * | 2014-01-14 | 2014-04-30 | 优尔美有限公司 | Wearable myoelectricity instrument |
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Application publication date: 20161123 |