CN102961132A - Wireless surface electromyographic signal pickup device and method and front-end compression method - Google Patents
Wireless surface electromyographic signal pickup device and method and front-end compression method Download PDFInfo
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Abstract
The invention discloses a wireless surface electromyographic signal pickup device and method and a front-end compression method. The device specifically comprises a wireless receiving terminal and a plurality of active wireless surface sensors which are in wireless communication with the wireless receiving terminal, wherein the active wireless surface sensors are used for high-fidelity pickup of surface electromyographic signals, and quantifying and transmitting the surface electromyographic signals, and the wireless receiving terminal is used for receiving the surface electromyographic signals picked up by the active wireless surface sensor and sending the signals to terminal equipment. The device solves the problem that the traditional wireless surface electromyographic signal acquisition device has a large amount of data, and the differential absolute value moving average algorithm is used by the front ends of the active wireless sensors to effectively compress the wireless transmission data amount, so that the support for the extension of channel number acquired by the active sensors is provided, and simultaneously, the time support for retransmission of lost packets is provided, and thus the ability of wireless peripheral object interference resistance and electromagnetic interference resistance is improved.
Description
Technical field
The present invention relates to physiological signal pickup technology field, in particular, relate to a kind of wireless surface myoelectric signal pick device, method and front end compression method.
Background technology
The physiological signal interactive device is to gather the physiological signals such as electromyographic signal, brain signal or electroneurographic signal, by identifying the characteristic information of this class signal, judge the intention of human brain, wherein, electromyographic signal is widely used in the fields such as clinical human body medical diagnosis on disease, sports medical science and rehabilitation engineering at present as a kind of electro-physiological signals of following muscular movement to produce.Compare with traditional implanted electromyographic signal, surface electromyogram signal is that the conductive electrode docile is obtained at skin surface, its characteristic information can directly reflect the human action intention, has the substantivity of sensed activation, therefore can constitute myoelectric limb with mechanical arm.In addition, the noinvasive characteristic of surface electromyogram signal also is used as man-machine interface, is applied to the various aspects such as interactive entertainment amusement, sign language automatic translation, electrical equipment control, operational commanding.
Surface electromyogram signal is the motor potential that is formed in the stack of time and space by the single muscle fiber action potential pulse that forms on the muscle fiber, and the characteristics of its signal are to be superposeed by the high-frequency impulse in a plurality of audioranges to form.The surface myoelectric collecting part is divided into wired surface myoelectric and wireless surface myoelectricity according to the characteristics of communication.Because wired surface myoelectric to the dependence of cable, affects the wearable and portable application of surface myoelectric to a great extent, in order to solve its wearable and portable application, the wireless surface myoelectricity has obtained development to a certain degree.At present, what multiple wireless surface myoelectricity adopted is topological structure, each sensor integrated meter facial muscle tele-release is large, the function of analog digital conversion and wireless transmit, the whole myoelectricity data communication devices that gather are crossed the receptor that custom protocol sends to appointment, this full initial data surface myoelectric acquisition system mainly is for nerve and muscle damage and rehabilitation research, the data volume that its fatal shortcoming is full original data transmissions is very large, limited the acquisition channel expansion, simultaneously also limited wireless transmission distance, and the anti-electromagnetic interference capability of system.
Therefore, a kind of wireless surface myoelectric signal pick device, method and front end compression method are provided, effectively reduce the wirelessly transmitting data amount, with expansion acquisition channel and expansion wireless transmission distance, the anti-electromagnetic interference capability of raising system is those skilled in the art's problem demanding prompt solutions.
Summary of the invention
In view of this, the invention provides a kind of wireless surface myoelectric signal pick device, method and front end compression method, to overcome in the prior art because full original data transmissions data volume is very large, the expansion of restriction acquisition channel, simultaneously also limit wireless transmission distance, and the problem of the anti-electromagnetic interference capability of system.
For achieving the above object, the invention provides following technical scheme:
A kind of wireless surface myoelectric signal pick device, the front end compression wireless surface myoelectric signal that is used for action recognition picks up, and this device comprises: radio receiving terminal and a plurality of active radio surface probes that are connected with described radio receiving terminal radio communication, wherein,
Described active radio surface probe effects on surface electromyographic signal is carried out picking up of high-fidelity, and described surface electromyogram signal quantized and transmits;
Described radio receiving terminal receives the described surface electromyogram signal that described active radio surface probe picks up, and is sent to terminal unit.
Wherein, described active radio surface probe specifically is made of non-polarized high-purity filamentary silver, high pass instrumentation amplifier, bandpass amplifier, built-in analog-digital converter low-power scm, the first radio frequency transceiving module, battery module and battery management module,
Described non-polarized high-purity filamentary silver obtains surface electromyogram signal by being adjacent to skin, carry out the high impedance coupling of described surface electromyogram signal through the high gain amplifier of described high pass instrumentation amplifier and described bandpass amplifier formation, small signals amplification and the pseudo-track interference elimination treatment of moving, obtain the relatively high analogue signal of amplitude, described built-in analog-digital converter low-power scm becomes digital signal and buffer memory with described analog signal conversion, and described digital signal compressed processing, the described digital signal of controlling after described the first radio frequency transceiving module will be compressed is sent to described radio receiving terminal.
Wherein, described radio receiving terminal comprises: the second radio frequency transceiving module, described radio receiving terminal receives the described digital signal that described active radio surface probe sends by described the second radio frequency transceiving module.
Preferably, described non-polarized high-purity filamentary silver is cylindrical, arranges according to parallel three utmost point pole technologies.
Preferably, the spacing between three utmost point bars of described non-polarized high-purity filamentary silver is 5cm-15cm, and wherein any one utmost point bar all can be used as ground electrode, and other two utmost point bars link to each other with the positive inverting input of described high pass instrumentation amplifier.
On the basis of above-mentioned disclosed a kind of wireless surface myoelectric signal pick device, the invention also discloses a kind of wireless surface myoelectric signal pick-up method, the front end compression wireless surface myoelectric signal that is used for action recognition picks up, and the method comprises:
A1, active radio surface probe obtain surface electromyogram signal by the non-polarized high-purity filamentary silver that is adjacent to skin;
The high pass instrumentation amplifier of A2, described active radio surface probe and bandpass amplifier consist of high gain amplifier and carry out high impedance coupling, the small signals amplification of described surface electromyogram signal and the pseudo-track interference elimination treatment of moving, and obtain the relatively high analogue signal of amplitude;
The built-in analog-digital converter low-power scm of A3, described active radio surface probe becomes digital signal and buffer memory with described analog signal conversion, and described digital signal compressed processing, the described digital signal of controlling after described the first radio frequency transceiving module will be compressed is sent to described radio receiving terminal;
A4, described radio receiving terminal receive the described surface electromyogram signal that described active radio surface probe picks up, and are sent to terminal unit.
The invention also discloses a kind of front end compression method, it is characterized in that, the front end compression wireless surface myoelectric signal that is used for action recognition picks up, and the method comprises:
S1, the numerical value after the signal quantization is carried out differential process;
S2, the data that obtain after described differential processed take absolute value, and to the summation that adds up of described absolute value;
S3, the cumulative summing value that described cumulative summation is obtained are fixed the average or shifting processing of window;
S4, described value structure average or shifting processing is carried out buffer memory.
Preferably, the described differential processing concrete grammar among the described step S1 is:
Current quantized values is deducted a upper quantized values, preserve simultaneously current quantized values, process for lower subdifferential and prepare.
Preferably, described step S3 is specially:
Number of times or differential are processed or cumulative number is counted to quantizing;
When counting reaches the stationary window data volume, described cumulative summing value is processed divided by the stationary window size of data;
When the stationary window data volume satisfies 2 n power, on average adopt shifting processing.
Via above-mentioned technical scheme as can be known, compared with prior art, the invention discloses a kind of wireless surface myoelectric signal pick device, method and front end compression method, this device specifically comprises: radio receiving terminal and a plurality of active radio surface probes that are connected with described radio receiving terminal radio communication, wherein, described active radio surface probe effects on surface electromyographic signal is carried out picking up of high-fidelity, and described surface electromyogram signal quantized and transmits; Described radio receiving terminal receives the described surface electromyogram signal that described active radio surface probe picks up, and is sent to terminal unit.This device has overcome the large problem of data volume of conventional wireless surface myoelectric harvester, carry out differential absolute value rolling average compression algorithm by the active radio sensor front end, effectively compressed the wirelessly transmitting data amount, for the expansion of the port number of active sensor collection provides support, provide the time support for packet loss retransmits simultaneously, improved the ability of anti-wireless peripheral object interference and electromagnetic interference.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiments of the invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to the accompanying drawing that provides other accompanying drawing.
Fig. 1 is the structural representation of the disclosed a kind of wireless surface myoelectric signal pick device of the embodiment of the invention;
Fig. 2 is the structural representation of active radio surface probe in the disclosed a kind of wireless surface myoelectric signal pick device of the embodiment of the invention;
Fig. 3 is the geometry figure of non-polarized high-purity silver filament bar;
Fig. 4 is the flow chart of the disclosed a kind of wireless surface myoelectric signal pick-up method of the embodiment of the invention;
Fig. 5 is the flow chart of the disclosed a kind of front end compression method of the embodiment of the invention;
Fig. 6 is the characteristic effect figure of the disclosed a kind of front end compression method of the embodiment of the invention.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
The invention discloses a kind of wireless surface myoelectric signal pick device, method and front end compression method, this device specifically comprises: radio receiving terminal and a plurality of active radio surface probes that are connected with the radio receiving terminal radio communication, wherein, active radio surface probe effects on surface electromyographic signal is carried out picking up of high-fidelity, and surface electromyogram signal quantized and transmits; Radio receiving terminal receives the surface electromyogram signal that the active radio surface probe picks up, and is sent to terminal unit.This device has overcome the large problem of data volume of conventional wireless surface myoelectric harvester, carry out differential absolute value rolling average compression algorithm by the active radio sensor front end, effectively compressed the wirelessly transmitting data amount, for the expansion of the port number of active sensor collection provides support, provide the time support for packet loss retransmits simultaneously, improved the ability of anti-wireless peripheral object interference and electromagnetic interference.This front end compression method has not only been realized data compression, has finished simultaneously surface electromyogram signal feature extraction task, and the task of feature extraction is given a plurality of active radio sensors, has reduced the operand of action recognition processor.
See also accompanying drawing 1, be the structural representation of a kind of wireless surface myoelectric signal pick device disclosed by the invention.The invention discloses a kind of wireless surface myoelectric signal pick device, the front end compression wireless surface myoelectric signal that is used for action recognition picks up, this device comprises: radio receiving terminal 101 and a plurality of active radio surface probes 102 that are connected with described radio receiving terminal 101 radio communications, wherein, described active radio surface probe 102 effects on surface electromyographic signals are carried out picking up of high-fidelity, and described surface electromyogram signal quantized and transmit; Described radio receiving terminal 101 receives the described surface electromyogram signal that described active radio surface probe 102 picks up, and is sent to terminal unit.
The invention discloses a kind of wireless surface myoelectric signal pick device, this device specifically comprises: radio receiving terminal and a plurality of active radio surface probes that are connected with the radio receiving terminal radio communication, wherein, active radio surface probe effects on surface electromyographic signal is carried out picking up of high-fidelity, and surface electromyogram signal quantized and transmits; Radio receiving terminal receives the surface electromyogram signal that the active radio surface probe picks up, and is sent to terminal unit.This device has overcome the large problem of data volume of conventional wireless surface myoelectric harvester, carry out differential absolute value rolling average compression algorithm by the active radio sensor front end, effectively compressed the wirelessly transmitting data amount, for the expansion of the port number of active sensor collection provides support, provide the time support for packet loss retransmits simultaneously, improved the ability of anti-wireless peripheral object interference and electromagnetic interference.
See also accompanying drawing 2, be the structural representation of active radio surface probe in the disclosed a kind of wireless surface myoelectric signal pick device of the embodiment of the invention.The structure of concrete described active radio surface probe comprises: non-polarized high-purity filamentary silver, high pass instrumentation amplifier, bandpass amplifier, built-in analog-digital converter low-power scm, radio frequency transceiving module, lithium battery and power management module consist of, and the annexation of modules sees also accompanying drawing 2.
The workflow of each active sensor is that non-polarized high-purity silver silk obtains surface electromyogram signal by being close to skin, then carry out skin high impedance coupling through the high gain amplifier that is consisted of by high pass instrumentation amplifier and bandpass amplifier, small signals amplification, and the pseudo-track of moving obtains the relatively high analogue signal of amplitude after disturbing the processing such as elimination, finish analog signal conversion by built-in analog-digital converter low-power scm again and become digital signal and buffer memory, single-chip microcomputer compresses processing to the digital signal after changing, and last Single-chip Controlling radio frequency transceiving module sends the digital signal after the compression.The compression of single-chip microcomputer is the process of surface electromyogram signal feature extraction.
A plurality of active radio sensors consist of surface electromyogram signal and pick up array, and the task that each active radio sensor need to carry out is to pick up, amplify, quantize and compress.Then send to radio receiving terminal by custom protocol wireless network or bluetooth, wireless terminal utilizes packed data control domestic electric appliances controller, PC or the mechanical hand with the surface electromyogram signal characteristic information, consists of artificial limb or the body sense controller of belt surface electromyographic signal control.
The bulk supply of active radio sensor is to be provided by lithium battery, then carries out voltage stabilizing and under-voltage management through power management module.The purpose of voltage stabilizing is to provide low noise power supply for the analog circuit that amplifier consists of, single-chip microcomputer for the radio circuit that digital circuit and the 2.4G wireless chip of core consists of, comprise positive and negative regulated power supply, wherein, the high pass instrumentation amplifier adopts the positive negative bipolar Power supply, and bandpass amplifier and single-chip microcomputer and radio transceiver part are powered by the unipolarity positive supply.In addition, all place a decoupling capacitor near the acp chip power pin of each functional module, avoid its power supply to crosstalk.
The high pass instrumentation amplifier adopts the integrated instrumentation amplifier of three amplifiers, and the embodiment of its high pass is the gain control end that the mode of employing resistance and capacitances in series accesses three amplifier instrumentation amplifiers.Bandpass amplifier is the Butterworth band pass filter circuit that adopts single amplifier single power supply.Two amplifier series connection consist of the band filter with second order high pass and single order low pass, and high pass cut off frequency is set to 10Hz, and low-pass cut-off frequencies is set to 500Hz.The high-pass filtering characteristic that amplifier the embodies noise jamming that pseudo-track causes that can effectively suppress to move provides the analogue signal of high s/n ratio for the eigenvalue signal of subsequent data compression.
The single-chip microcomputer of active radio sensor adopts the built-in AD type of low-power consumption, pays the utmost attention to MSP430 series and STM320 series.Single-chip microcomputer is by spi bus or self-defined bus and radio frequency chip communication, and the antenna of radio frequency chip adopts the snakelike layout of PCB.Radio frequency transceiving module can with other functional modules on same circuit board, also can become separately plate, by flexible winding displacement and microcontroller communication.
The pickoff electrode of active radio sensor adopts cylindrical non-polarized high-purity filamentary silver, arranges according to parallel three utmost point pole technologies.As shown in Figure 3, utmost point bar 1,2,3 is arranged in parallel, and the spacing between them is preferentially selected 10cm at 5cm-15cm.Any one utmost point bar in three utmost point bars all can be used as ground electrode, and two other electrode directly links to each other with the positive inverting input of the instrumentation amplifier of accompanying drawing 2.
The invention discloses a kind of wireless surface myoelectric signal pick device, this device specifically comprises: radio receiving terminal and a plurality of active radio surface probes that are connected with the radio receiving terminal radio communication, wherein, active radio surface probe effects on surface electromyographic signal is carried out picking up of high-fidelity, and surface electromyogram signal quantized and transmits; Radio receiving terminal receives the surface electromyogram signal that the active radio surface probe picks up, and is sent to terminal unit.This device has overcome the large problem of data volume of conventional wireless surface myoelectric harvester, carry out differential absolute value rolling average compression algorithm by the active radio sensor front end, effectively compressed the wirelessly transmitting data amount, for the expansion of the port number of active sensor collection provides support, provide the time support for packet loss retransmits simultaneously, improved the ability of anti-wireless peripheral object interference and electromagnetic interference.
On the basis of the disclosed embodiment of the invention described above, see also accompanying drawing 4, be the flow chart of the disclosed a kind of wireless surface myoelectric signal pick-up method of the embodiment of the invention.The embodiment of the invention also discloses a kind of wireless surface myoelectric signal pick-up method, the front end compression wireless surface myoelectric signal that is used for action recognition picks up, and the method concrete steps comprise:
The high pass instrumentation amplifier of steps A 2, active radio surface probe and bandpass amplifier consist of high gain amplifier and carry out high impedance coupling, the small signals amplification of surface electromyogram signal and the pseudo-track interference elimination treatment of moving, and obtain the relatively high analogue signal of amplitude.
The built-in analog-digital converter low-power scm of steps A 3, active radio surface probe becomes digital signal and buffer memory with analog signal conversion, and digital signal compressed processing, the digital signal of controlling after described the first radio frequency transceiving module will be compressed is sent to radio receiving terminal.
Steps A 4, radio receiving terminal receive the surface electromyogram signal that the active radio surface probe picks up, and are sent to terminal unit.
The invention discloses a kind of wireless surface myoelectric signal pick-up method, the method has overcome the large problem of data volume of conventional wireless surface myoelectric harvester, carry out differential absolute value rolling average compression algorithm by the active radio sensor front end, effectively compressed the wirelessly transmitting data amount, for the expansion of the port number of active sensor collection provides support, provide the time support for packet loss retransmits simultaneously, improved the ability of anti-wireless peripheral object interference and electromagnetic interference.
For the disclosed method of embodiment, because it is corresponding with the disclosed device of embodiment, so description is fairly simple, relevant part gets final product referring to the explanation of device part.
On the basis of above-mentioned disclosed a kind of wireless surface myoelectric signal pick device and method, see also accompanying drawing 5, be the flow chart of the disclosed a kind of front end compression method of the embodiment of the invention.The invention also discloses a kind of front end compression method, the front end compression wireless surface myoelectric signal that is used for action recognition picks up, after the active radio sensor starts collection, and the numerical value that the AD converting analogue signals obtains quantizing, single-chip microcomputer carries out data compression, and the method concrete steps comprise:
Step S1, the numerical value after the signal quantization is carried out differential process.
Current quantized values is deducted a upper quantized values, preserve simultaneously current quantized values, process for lower subdifferential and prepare.
Step S2, the data that obtain after described differential processed take absolute value, and to the summation that adds up of described absolute value.
Step S3, the cumulative summing value that described cumulative summation is obtained are fixed the average or shifting processing of window.
Number of times or differential are processed or cumulative number is counted to quantizing;
When counting reaches the stationary window data volume, described cumulative summing value is processed divided by the stationary window size of data;
When the stationary window data volume satisfies 2 n power, on average adopt shifting processing.
Step S4, described value structure average or shifting processing is carried out buffer memory.
The compression ratio of this surface electromyogram signal data front end compression method is fixed window size, and top-priority window size is 128.After each active radio sensor of wireless front end compressive surfaces electromyographic signal pick device carries out data compression according to the method, carry out again packed data timesharing transmission.This method has not only realized data compression, has finished simultaneously surface electromyogram signal feature extraction task, the characteristic effect of its extraction as shown in Figure 6, compression ratio is 128, the line of black is the later signal of compression, Lycoperdon polymorphum Vitt be primary signal.
The disclosed a kind of front end compression method of the embodiment of the invention has not only been realized data compression, has finished simultaneously surface electromyogram signal feature extraction task, and the task of feature extraction is given a plurality of active radio sensors, has reduced the operand of action recognition processor.
In sum: the invention discloses a kind of wireless surface myoelectric signal pick device, method and front end compression method, this device specifically comprises: radio receiving terminal and a plurality of active radio surface probes that are connected with the radio receiving terminal radio communication, wherein, active radio surface probe effects on surface electromyographic signal is carried out picking up of high-fidelity, and surface electromyogram signal quantized and transmits; Radio receiving terminal receives the surface electromyogram signal that the active radio surface probe picks up, and is sent to terminal unit.This device has overcome the large problem of data volume of conventional wireless surface myoelectric harvester, carry out differential absolute value rolling average compression algorithm by the active radio sensor front end, effectively compressed the wirelessly transmitting data amount, for the expansion of the port number of active sensor collection provides support, provide the time support for packet loss retransmits simultaneously, improved the ability of anti-wireless peripheral object interference and electromagnetic interference.This front end compression method has not only been realized data compression, has finished simultaneously surface electromyogram signal feature extraction task, and the task of feature extraction is given a plurality of active radio sensors, has reduced the operand of action recognition processor.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can in the situation that does not break away from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. wireless surface myoelectric signal pick device, it is characterized in that the front end compression wireless surface myoelectric signal that is used for action recognition picks up, this device comprises: radio receiving terminal and a plurality of active radio surface probes that are connected with described radio receiving terminal radio communication, wherein
Described active radio surface probe effects on surface electromyographic signal is carried out picking up of high-fidelity, and described surface electromyogram signal quantized and transmits;
Described radio receiving terminal receives the described surface electromyogram signal that described active radio surface probe picks up, and is sent to terminal unit.
2. device according to claim 1, it is characterized in that, described active radio surface probe specifically is made of non-polarized high-purity filamentary silver, high pass instrumentation amplifier, bandpass amplifier, built-in analog-digital converter low-power scm, the first radio frequency transceiving module, battery module and battery management module
Described non-polarized high-purity filamentary silver obtains surface electromyogram signal by being adjacent to skin, carry out the high impedance coupling of described surface electromyogram signal through the high gain amplifier of described high pass instrumentation amplifier and described bandpass amplifier formation, small signals amplification and the pseudo-track interference elimination treatment of moving, obtain the relatively high analogue signal of amplitude, described built-in analog-digital converter low-power scm becomes digital signal and buffer memory with described analog signal conversion, and described digital signal compressed processing, the described digital signal of controlling after described the first radio frequency transceiving module will be compressed is sent to described radio receiving terminal.
3. device according to claim 2, it is characterized in that, described radio receiving terminal comprises: the second radio frequency transceiving module, described radio receiving terminal receives the described digital signal that described active radio surface probe sends by described the second radio frequency transceiving module.
4. device according to claim 2 is characterized in that, described non-polarized high-purity filamentary silver is cylindrical, arranges according to parallel three utmost point pole technologies.
5. device according to claim 4, it is characterized in that, spacing between three utmost point bars of described non-polarized high-purity filamentary silver is 5cm-15cm, and wherein any one utmost point bar all can be used as ground electrode, and other two utmost point bars link to each other with the positive inverting input of described high pass instrumentation amplifier.
6. a wireless surface myoelectric signal pick-up method is characterized in that, the front end compression wireless surface myoelectric signal that is used for action recognition picks up, and the method comprises:
A1, active radio surface probe obtain surface electromyogram signal by the non-polarized high-purity filamentary silver that is adjacent to skin;
The high pass instrumentation amplifier of A2, described active radio surface probe and bandpass amplifier consist of high gain amplifier and carry out high impedance coupling, the small signals amplification of described surface electromyogram signal and the pseudo-track interference elimination treatment of moving, and obtain the relatively high analogue signal of amplitude;
The built-in analog-digital converter low-power scm of A3, described active radio surface probe becomes digital signal and buffer memory with described analog signal conversion, and described digital signal compressed processing, the described digital signal of controlling after described the first radio frequency transceiving module will be compressed is sent to described radio receiving terminal;
A4, described radio receiving terminal receive the described surface electromyogram signal that described active radio surface probe picks up, and are sent to terminal unit.
7. a front end compression method is characterized in that, the front end compression wireless surface myoelectric signal that is used for action recognition picks up, and the method comprises:
S1, the numerical value after the signal quantization is carried out differential process;
S2, the data that obtain after described differential processed take absolute value, and to the summation that adds up of described absolute value;
S3, the cumulative summing value that described cumulative summation is obtained are fixed the average or shifting processing of window;
S4, described value structure average or shifting processing is carried out buffer memory.
8. method according to claim 7 is characterized in that, the described differential among the described step S1 is processed concrete grammar and is:
Current quantized values is deducted a upper quantized values, preserve simultaneously current quantized values, process for lower subdifferential and prepare.
9. method according to claim 7 is characterized in that, described step S3 is specially:
Number of times or differential are processed or cumulative number is counted to quantizing;
When counting reaches the stationary window data volume, described cumulative summing value is processed divided by the stationary window size of data;
When the stationary window data volume satisfies 2 n power, on average adopt shifting processing.
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| CN103169472A (en) * | 2013-04-09 | 2013-06-26 | 重庆绿色智能技术研究院 | Non-invasive neuromuscular disease inspection system based on attached electrode |
| CN106137188A (en) * | 2015-04-10 | 2016-11-23 | 青岛智拓智能科技有限公司 | A kind of electromyographic signal transmission method and system |
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| EP3120764A1 (en) | 2015-07-23 | 2017-01-25 | Universitat Politècnica De Catalunya | Portable device and method for measuring electromyographic signals of an user |
| TWI602164B (en) * | 2015-09-03 | 2017-10-11 | 國立臺北科技大學 | An electromyography sensor and inertia sensor-based posture recognition device for real-time sign language translation system |
| CN109512425A (en) * | 2019-01-09 | 2019-03-26 | 大悦创新（苏州）医疗科技股份有限公司 | Compression, the method and apparatus for decompressing myoelectricity data |
| CN111248908A (en) * | 2020-02-06 | 2020-06-09 | 中国矿业大学 | Distributed surface electromyographic signal wireless acquisition system with variable channel number |
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