CN103300853B - Diagnosis and treatment system based on surface myoelectricity - Google Patents
Diagnosis and treatment system based on surface myoelectricity Download PDFInfo
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- CN103300853B CN103300853B CN201310236196.XA CN201310236196A CN103300853B CN 103300853 B CN103300853 B CN 103300853B CN 201310236196 A CN201310236196 A CN 201310236196A CN 103300853 B CN103300853 B CN 103300853B
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Abstract
The invention discloses a diagnosis and treatment system based on surface myoelectricity. The diagnosis and treatment system comprises an upper computer collection module, an upper computer assessment module, an upper computer circulation electrical stimulation module, an upper computer biological feedback electrical stimulation module, a communication module, a digital processing controller, a multichannel surface myoelectricity electrode, a multichannel amplification filtering module, an analog-digital converter, a digital-analog converter, a multichannel power amplification module and an output current-limiting monitoring module. The diagnosis and treatment system has multiple functions such as collection and diagnostic assessment of surface electromyogram signals, circulation electrical stimulation, biological feedback electrical stimulation and the like, and are applicable to fields such as sports science, rehabilitation medicine, biomedical engineering and the like.
Description
Technical field
The present invention relates to a kind of diagnosis and therapy system based on surface myoelectric, belong to sports science field, rehabilitation medicine field and biomedical engineering field.
Background technology
Surface electromyogram signal (surface Electromyogram, sEMG) be neuromuscular system carry out randomness and non-random movable time, bio electricity change is through surface electrode guiding, amplification, display and record the one dimension voltage time sequence signal obtained, its amplitude is 0-5000 μ V, and frequency is 30-500Hz.Between the active state of surface electromyogram signal and muscle and functional status, the dependency of various degrees, is widely used in sports science at present, as motor technique analysis on its rationality, tired to judge, the non-invasi prediction of anaerobic valve and muscle fiber types etc.; Clinical medicine, as all there is important value the aspects such as neuromuscular evaluation, biofeedback therapy, rehabilitation.
Transcutaneous electrical stimulation (being called for short TENS) main sensation nerve fiber, inputs human body to treat the electrotherapeutic method of pain by skin by specific low frequency pulse current.Neuromuscular swashs therapy (being called for short NMES) main stimulus movement nerve fiber, and application low frequency pulse current stimulated muscle makes it shrink, and has recovered the method for its motor function.FES (being called for short FES) utilizes the low frequency pulse current of some strength, one or more groups muscle is stimulated by the program preset, bring out muscular movement or simulate normal autonomic movement, to reach the object improved or recover by stimulated muscle or muscle group function.
Chinese patent CN201958882U discloses a kind of monitoring device of epidermic muscle-electricity, employing bipolar electrode detects, trap level adopts double T active electric network, overcomes the problem that epidermis sensor input impedance is low, information loss large and Hz noise ability is weak that commercially available Germany produces.
Chinese patent CN1088121A discloses a kind of reaction type apoplectic hemiplegia therapeutic instrument based on detecting the electromyographic signal that cranial nerve sends, adopt three electrode detection electromyographic signals, after its transfer power is amplified, become strong power impulses and stimulate limbs of patient, help it to rebuild human nerve passage, reach therapeutic effect.
In the market, most domestic and international surface myoelectric systems can be divided into two classes: diagnostic system (the ME6000 myoelectricity tester as Mega company of Finland) and electro-therapeutic system (the MyoTrac dual pathways biostimulation feedback apparatus as Canadian Thought company).They focus on the single work of settling signal collection assessment or electricity irritation respectively, belong to the piece-rate system of diagnostic function and treatment function opposite independent.
Analyzed as can be seen from above, the electrode channel of existing part myoelectricity instrument is less, therefore often needs, by repeatedly settling electrode, repeatedly to detect, so unavoidably take time and effort to the overall condition assessment of sufferer.In addition the more important thing is, most of instrument and equipment function singleness, myoelectricity collection assessment or electronic stimulation function can only be completed separately, not only increase the expense of Instrument purchase, and due to Diagnosis and Treat process relatively independent, the data target collected cannot be made very effectively to combine with treatment, and and guide the setting of parameters of electrical stimulation, this causes certain difficulty to the formulation of sufferer more excellent rehabilitation training scheme.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of diagnosis and therapy system based on surface myoelectric.
Inventive concept of the present invention is: the relatively single independence of existing surface myoelectric functions of the equipments, the signals collecting of surface myoelectric and condition assessment, completed separately by different instruments often with electric stimulation rehabilitation training, between lack and contact closely, the index of the surface electromyogram signal collected can not go the setting instructing parameters of electrical stimulation well, this causes Diagnosis and Treat process mutually to disconnect, and seem independent separately, relatedness is not strong.In addition, such instrument and equipment of existing part, gather and stimulation channels number all less, the diagnoses and treatment work of sufferer multiple location cannot be completed at one time.
For this reason, the signals collecting of surface myoelectric and condition assessment and electric stimulation rehabilitation are trained and are carried out function and be combined by the present invention, by biofeedback technology, Diagnosis and Treat process is associated, the surface myoelectric index allowing collection analysis obtain, better can instruct the setting of electricity irritation parameters, utilize the therapeutic modality such as circulation electricity irritation and biofeedback electricity irritation, help patient's restore funcitons better.Multi-channel surface myoelectric electrode of the present invention can realize the multiplexing of surface electromyogram signal acquisition and electricity irritation function.Each passage is four line three electrodes, and four lines are two holding wires, ground wire, a feedback line, and three electrodes are two signal electrodes, a reference electrode.Diagnosis and therapy system based on surface myoelectric of the present invention can complete the diagnosis and treatment work of sufferer multiple location at one time, and efficiency improves greatly.
Diagnosis and therapy system based on surface myoelectric of the present invention achieves the function such as collection assessment, circulation electricity irritation, biofeedback electricity irritation of surface electromyogram signal, specific as follows:
1) collection of surface electromyogram signal: multichannel collecting, sample frequency 3.3KHz, amplification 600, passband 6Hz to 1.2KHz.
2) assessment of surface electromyogram signal: comprise mid frequency (MF), on average to do manual work frequency (MPF), zero-crossing rate (ZCR), average myoelectricity (AEMG), frequency spectrum area (SPA).
3) circulation electricity irritation: the multiple stimulus modelity such as NMES, FES, TENS is optional; The multiple stimulus waveforms such as one side ripple, two-sided ripple, mutual ripple are optional; Stimulating current intensity 0 is adjustable to 10mA (RMS), and frequency 1 is adjustable to 100Hz, and pulse width 0 to 500 μ s is adjustable.
4) biofeedback electricity irritation: on the basis of electricity irritation, the multimedia function in conjunction with native system carries out (comprising sound, vision, game etc.) the interactive electronic stimulation of correlation type to patient.
Specifically, the present invention solves the technical scheme that its technical problem takes and is:
The diagnosis and therapy system that the present invention is based on surface myoelectric comprises:
Host computer acquisition module, for sending the acquisition instructions of collection surface electromyographic signal to communication module, and receives the surface electromyogram signal from communication module;
Communication module, for receive come from host computer acquisition module acquisition instructions, receive and come from the stimulation instructions of host computer circulation electrical stimulation module and host computer biofeedback electrical stimulation module, and receive the surface electromyogram signal from digital process controller;
Digital process controller, for carrying out digital filtering to the surface electromyogram signal coming from analog-digital converter, and to coming from acquisition instructions and the stimulation instructions decoding of communication module, to control analog-digital converter collection surface electromyographic signal, domination number weighted-voltage D/A converter produces stimulus sequence;
Host computer circulation electrical stimulation module, for receiving the circulation electricity irritation instruction of user's input, and passes to communication module by circulation electricity irritation instruction;
Host computer biofeedback electrical stimulation module, for receiving the biofeedback electricity irritation instruction of user's input, and passes to communication module by biofeedback electricity irritation instruction;
Host computer evaluation module, for receiving the surface electromyogram signal coming from host computer acquisition module, and gauging surface myoelectricity parameter, described surface myoelectric parameter generally includes the frequency spectrum area of the mid frequency of surface electromyogram signal, the average acting frequency of surface electromyogram signal, the zero-crossing rate of surface electromyogram signal, the average myoelectricity intensity of surface electromyogram signal and surface electromyogram signal;
Digital to analog converter, for receiving the stimulation instructions coming from digital process controller, and produces corresponding stimulus sequence according to stimulation instructions;
Multi-channel power amplification module, for receiving the stimulus sequence coming from digital to analog converter, and amplifies the power of stimulus sequence and produces stimulus signal, sending to output current limiting monitoring module;
Output current limiting monitoring module, for receiving the stimulus signal coming from multi-channel power amplification module, and being sent to by stimulus signal multi-channel surface myoelectric electrode to stimulate, the output current of Real-Time Monitoring stimulus signal, sends to analog-digital converter by the strength signal of output current;
Multi-channel surface myoelectric electrode, is sent to multichannel amplification filtering module for collection surface electromyographic signal, and passes to the position that will stimulate for the stimulus signal that receives output current limiting monitoring module;
Multichannel amplification filtering module, for receiving and amplifying the surface electromyogram signal coming from multi-channel surface myoelectric electrode, and does Filtering Processing by the surface electromyogram signal after amplifying;
Analog-digital converter, for receiving the surface electromyogram signal coming from multichannel amplification filtering module, and carries out analog digital conversion; Simultaneously for receiving the strength signal of the output current from output current limiting monitoring module, and carry out analog digital conversion, analog-digital converter is connected to digital process controller.
Further, the present invention also comprises power module, described power module comprises insulating power supply, low-dropout linear voltage-regulating circuit and LC filter circuit, the outfan of insulating power supply respectively with the input of low-dropout linear voltage-regulating circuit, the input of LC filter circuit connects, the outfan of low-dropout linear voltage-regulating circuit is connected with the input of LC filter circuit, the outfan of LC filter circuit and described communication module, digital process controller, digital to analog converter, multi-channel power amplification module, output current limiting monitoring module, multichannel filtering and amplifying circuit, the input of analog-digital converter connects respectively.
Further, power module of the present invention withstand voltagely should be more than or equal to 4000Vac.
Further, communication module of the present invention turns USB line by high-speed figure optocoupler and serial ports and forms, described high-speed figure optocoupler is for receiving the surface electromyogram signal from digital process controller, and sent to by surface electromyogram signal serial ports to turn USB line, receive the acquisition instructions and the stimulation instructions that turn USB line from serial ports simultaneously, and acquisition instructions and stimulation instructions are sent to digital process controller; Serial ports turns USB line for receiving the stimulation instructions coming from host computer circulation electrical stimulation module, host computer biofeedback electrical stimulation module from the acquisition instructions of host computer acquisition module and reception, and described acquisition instructions and stimulation instructions are sent to described high-speed figure optocoupler, receive the surface electromyogram signal from high-speed figure optocoupler simultaneously, and surface electromyogram signal is sent to host computer acquisition module.
Further, the isolation voltage of high-speed figure optocoupler of the present invention is peak-to-peak value 7500Vac, and data transmission rate is 1MHz.
Further, multichannel amplification filtering module of the present invention comprises the surface myoelectric process path of multiple passage, and the surface myoelectric process path of each passage comprises pre-amplification circuit, active filter circuit and booster circuit;
Described pre-amplification circuit is for the surface electromyogram signal that receives from multi-channel surface myoelectric electrode and amplify, and the surface electromyogram signal after amplifying is sent to active filter circuit;
Described active filter circuit for receiving the surface electromyogram signal from pre-amplification circuit, and does Filtering Processing, and filtered surface electromyogram signal is sent to booster circuit;
Surface electromyogram signal for receiving the surface electromyogram signal from active filter circuit, and is sent to analog-digital converter by described booster circuit.
Further, the differential input structure that three operational amplifiers that pre-amplification circuit of the present invention adopts same silicon chip to manufacture form.
Further, multi-channel power amplification module of the present invention comprises the electricity irritation path of multiple passage, and the electricity irritation path of each passage comprises voltage follower circuit, metal-oxide-semiconductor power amplification circuit and transformer boost circuit;
Stimulus sequence for receiving the stimulus sequence from digital to analog converter, and is sent to metal-oxide-semiconductor power amplification circuit by described voltage follower circuit;
Described metal-oxide-semiconductor power amplification circuit, for receiving the stimulus sequence from voltage follower circuit, amplifies the power of stimulus sequence and produces stimulus signal, and stimulus signal being sent to transformer boost circuit;
Stimulus signal for receiving the stimulus signal from metal-oxide-semiconductor power amplification circuit, and is sent to output current limiting monitoring module by described transformer boost circuit.
Further, output current limiting monitoring module of the present invention comprises diode bridge heap, accurate sample resistance and audion current-limiting circuit;
Stimulus signal for receiving the stimulus signal from multi-channel power amplification module, and is sent to accurate sample resistance by described diode bridge heap;
Stimulus signal for receiving the stimulus signal from diode bridge heap, and is sent to audion current-limiting circuit by described accurate sample resistance;
Described audion current-limiting circuit is for receiving the stimulus signal from accurate sample resistance, and stimulus signal is sent to multi-channel surface myoelectric electrode and stimulates, the output current of Real-Time Monitoring stimulus signal while of audion current-limiting circuit, and the strength signal of output current is sent to analog-digital converter.
Compared with prior art, the invention has the beneficial effects as follows: by the signals collecting of surface myoelectric and condition assessment, Function Integration Mechanism is carried out with electric stimulation rehabilitation training, achieve the collection assessment of surface electromyogram signal, circulation electricity irritation, the functions such as biofeedback electricity irritation, strengthen the relatedness of Diagnosis and Treat process, allow the surface electromyogram signal that collection analysis obtains, better can instruct the setting of electricity irritation parameters, simultaneously in rehabilitation training, at sound, on visual basis, increase game link, improve the interactivity of user and system, contribute to user and better recover extremity motor function.Multichannel collecting provided by the invention/stimulation diagnosis and therapy system can complete the Diagnosis and Treat work of sufferer multiple location at one time, has broad application prospects in the fields such as sports science, rehabilitation medicine, biomedical engineering.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of diagnosis and therapy system based on surface myoelectric of the present invention.
Fig. 2 is the structural representation of power module.
Fig. 3 is the structural representation of multichannel amplification filtering module.
Fig. 4 is the structural representation of multi-channel power amplification module.
Fig. 5 is the structural representation of output current limiting monitoring module.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention will be further described.
See Fig. 1, the diagnosis and therapy system that the present invention is based on surface myoelectric comprises host computer acquisition module, host computer evaluation module, host computer circulation electrical stimulation module, host computer biofeedback electrical stimulation module, communication module, digital process controller, multi-channel surface myoelectric electrode, multichannel amplification filtering module, analog-digital converter, digital to analog converter, multi-channel power amplification module, output current limiting monitoring module.Diagnosis and therapy system of the present invention provides the several functions such as collection and diagnostic assessment, circulation electricity irritation, biofeedback electricity irritation of surface electromyogram signal, and the collection assessment of surface myoelectric and the rehabilitation of electricity irritation are incorporated into same system.
1) collection of surface electromyogram signal: multichannel collecting, sample frequency 3.3KHz, amplification 600, passband 6Hz to 1.2KHz.
2) assessment of surface electromyogram signal: comprise mid frequency (MF), on average to do manual work frequency (MPF), zero-crossing rate (ZCR), average myoelectricity (AEMG), frequency spectrum area (SPA).
3) circulation electricity irritation: the multiple stimulus modelity such as NMES, FES, TENS is optional; The multiple stimulus waveforms such as one side ripple, two-sided ripple, mutual ripple are optional; Stimulating current intensity 0 is adjustable to 10mA (RMS), and frequency 1 is adjustable to 100Hz, and pulse width 0 to 500 μ s is adjustable.
4) biofeedback electricity irritation: on the basis of electricity irritation, the multimedia function in conjunction with native system carries out (comprising sound, vision, game etc.) the interactive electronic stimulation of correlation type to patient.
Introduce operation principle and the function of above-mentioned module below respectively.
A kind of embodiment of communication module is: turn USB line by serial ports and high-speed figure optocoupler forms, and completes host computer acquisition module, host computer circulation electrical stimulation module, communication between host computer biofeedback electrical stimulation module and digital process controller.Digital processing controls by the electromyographic signal that collects after treatment, to turn USB line and be uploaded to host computer acquisition module, carry out the display of waveform and the Treatment Analysis of electromyographic signal by serial ports; Acquisition instructions, circulation electricity irritation instruction, biofeedback electricity irritation instruction are turned USB line by serial ports and send to digital process controller by host computer acquisition module, host computer circulation electrical stimulation module, host computer biofeedback electrical stimulation module accordingly.Because each module of host computer is connected with electrical network 220V alternating current, the circuit of present system is connected with user, be delivered to human body in order to prevent the fluctuation of electrical network by circuit to damage to user, therefore communication module comprises optocoupler, to ensure certain withstand voltage isolation.In present system, the optocoupler in communication module is preferably high-speed figure optocoupler, and model is the H11L1 of motorola inc, isolation voltage is 7500Vac (pk), data transmission rate can reach 1MHz, namely ensure that withstand voltage safety, also ensure that the efficiency that data are transmitted.
Fig. 2 shows a kind of embodiment of power module.Power module is that each several part of circuit is powered, and is made up of insulating power supply, low-dropout linear voltage-regulating circuit and LC filter circuit.As described in Figure 2, power module comprises insulating power supply, low-dropout linear voltage-regulating circuit and LC filter circuit, the outfan of insulating power supply is connected with the input of low-dropout linear voltage-regulating circuit, the input of LC filter circuit respectively, the outfan of low-dropout linear voltage-regulating circuit is connected with the input of LC filter circuit, and the outfan of LC filter circuit is connected respectively with the input of described communication module, digital process controller, digital to analog converter, multi-channel power amplification module, output current limiting monitoring module, multichannel filtering and amplifying circuit, analog-digital converter.Because present system is connected with electrical network 220V alternating current, in order to prevent the fluctuation of electrical network from reaching system, danger may be caused to user, the insulating power supply meeting relevant safety standard should be selected, to ensure the safety used.Two groups of the MPD-65 series of Mean Well company such as can be selected to export medical type Switching Power Supply, withstand voltage 4000Vac (I/P-O/P), meet ANSI/AAMI ES60601-1, TUV EN60601-1, the safety standards such as IEC60601-1, are converted to direct current 12V and 5V doubleway output by electrical network 220V alternating current.The 5V that insulating power supply exports by low-dropout linear voltage-regulating circuit is transformed into the magnitude of voltage needed for each module further, wherein, the supply voltage of digital process controller is 3.3V and 1.8V, the supply voltage of analog-digital converter is 3.3V, the supply voltage of multichannel amplification filtering module is ± 3V, the supply voltage of multi-channel power amplification module and output current limiting monitoring module is 12V and 5V, and the supply voltage of digital to analog converter and communication module is 5V.The each road power supply obtained is carried out the regular process of filtering by LC filter circuit, controls ripple in 5mV, restraint speckle, avoids power supply noise to disturb the collection of electromyographic signal.
Digital process controller is responsible for accepting and is processed collection/stimulation instructions that communication module sends, and completes corresponding collection/stimulation work.Digital process controller of the present invention can select the model of TI company to be the dsp chip of TMS320F2809, and this resources of chip is abundant, calculation processing power is strong, meets system requirements.And, this chip carries the analog-digital converter of 12-bit precision, oversampling technique in addition, analog-to-digital precision can be increased to 15-bit, improve the resolution to the surface electromyogram signal collected, sample frequency is set in 3.3kHz, ensures accurately can intactly gather out original surface electromyogram signal.Under circulation electricity irritation and biofeedback electrical stimulation pattern, the stimulation instructions that communication module sends by digital process controller, as: electrical stimulation pattern (NMES, FES, TENS), electrical stimulation waveforms (unidirectional ripple, two-way ripple, mutual ripple), electrical stimulation current intensity, electrical stimulation signal frequency, electric stimulation pulse width etc., changed by digital to analog converter, export stimulus sequence.
Acquisition instructions, by setting acquisition channel quantity and choosing passage, is sent to communication module by host computer acquisition module, and notice digital process controller starts the collecting work of surface electromyogram signal; Afterwards, host computer acquisition module receives the treated surface electromyogram signal that digital process controller is sent to communication module.The surface electromyogram signal waveform of each passage and data carry out showing and storing at host computer acquisition module.
Host computer evaluation module is loaded into the data of corresponding surface electromyogram signal from host computer acquisition module, choose the process that interested a certain section surface electromyographic signal carries out time domain and frequency domain, wherein, the zero-crossing rate (ZCR) of surface electromyogram signal, the average myoelectricity intensity (AEMG) etc. of surface electromyogram signal can be obtained by the analysis of time domain; The analysis of frequency domain is the frequency spectrum being obtained surface electromyogram signal by fast Fourier transform, then frequency spectrum is converted to, by calculating, finally obtain the frequency-domain index such as the frequency spectrum area (SPA) of surface electromyogram signal, the mid frequency (MF) of surface electromyogram signal, the average acting frequency (MPF) of surface electromyogram signal, These parameters processes after calculating completes in host computer evaluation module, directly carries out the display of digital quantization.
Host computer circulation electrical stimulation module has multichannel electronic stimulation function, the instruction of user's input stimulus, as: electrical stimulation pattern (NMES, FES, TENS), electrical stimulation waveforms (unidirectional ripple, two-way ripple, mutual ripple), electrical stimulation current intensity, electrical stimulation signal frequency, electric stimulation pulse width etc., stimulation instructions passes to digital process controller by communication module, through digital to analog converter, send stimulus sequence, this stimulus sequence after multi-channel power amplification module by power amplification, produce stimulus signal, be sent to output current limiting monitoring module, eventually pass through multi-channel surface myoelectric electrode to export, user is stimulated, reach therapeutic effect, meet Treatment need.
Host computer biofeedback electrical stimulation module is on the function basis of host computer circulation electrical stimulation module, and the multimedia function in conjunction with this module carries out (comprising sound, vision, game etc.) electronic stimulation of correlation type to patient.After the intensity of the surface electromyogram signal collected when host computer acquisition module reaches the threshold value set by system, the feedback that host computer biofeedback electrical stimulation module can give user certain, if encouragement (as " you are excellent ") acoustically, visual change are (as the change in color, literal prompting), score (as more in the threshold value exceeded set by system, game points will be higher) in game.Like this, on the basis of circulation electricity irritation, for user provides a kind of interactively therapeutic scheme, allow user with the process of system mutual, reach the effect of rehabilitation.
Multi-channel surface myoelectric electrode is for providing the multiplexing function of the collection of surface electromyogram signal and circulation electricity irritation, biofeedback electricity irritation.Multi-channel surface myoelectric electrode comprises four line three electrodes, and " four lines " is wherein two holding wires, ground wire, a feedback line, and " three electrodes " is two signal electrodes, a reference electrode.Wherein, two signal electrodes, respectively by holding wire, input the input of the pre-amplification circuit in multichannel amplification filtering module with difference form; Reference electrode is connected with the ground level of system with ground wire; Feedback line is connected with the screen layer of multi-channel surface myoelectric electrode.
Fig. 3 shows a kind of embodiment of multichannel amplification filtering module.Multichannel amplification filtering module has the surface myoelectric process path of multiple passage, and each passage comprises pre-amplification circuit, active filter circuit, booster circuit.Surface electromyogram signal for receiving the surface electromyogram signal from multi-channel surface myoelectric electrode, and is sent to active filter circuit by pre-amplification circuit; Surface electromyogram signal for receiving the surface electromyogram signal from pre-amplification circuit, and is sent to booster circuit by active filter circuit; Surface electromyogram signal for receiving the surface electromyogram signal from active filter circuit, and is sent to analog-digital converter by booster circuit.The differential input structure of three operational amplifier compositions that pre-amplification circuit adopts the same silicon chip of low noise, high cmrr, high input impedance to manufacture, to obtain the good original surface electromyogram signal of signal to noise ratio.Active filter circuit carries out Filtering Processing to the surface electromyogram signal coming from pre-amplification circuit, and bandwidth is set to 6Hz to 1.2KHz, retains effective electromyographic signal, the noise outside filtering passband.Because multichannel amplification filtering module adopts dual power supply, signal amplitude has positive and negative, and the input signal amplitude of analog-digital converter should meet 0 ~ 3V, therefore needs surface electromyogram signal to be carried out boosting process.The adder that booster circuit is consisted of operational amplifier realizes, and the baseline of input signal is raised to 1.5V, makes the surface electromyogram signal amplitude after process meet the input requirements of analog-digital converter.The overall gain of multichannel amplification filtering module is 600 times, and bandwidth is 6Hz to 1.2KHz, resolution 0.2 μ V, can ensure surface electromyogram signal accurately intactly collected process.
Digital to analog converter comes from for receiving the stimulation instructions that communication module is sent to digital process controller, as: electrical stimulation pattern (NMES, FES, TENS), electrical stimulation waveforms (unidirectional ripple, two-way ripple, mutual ripple), electrical stimulation current intensity, electrical stimulation signal frequency, electric stimulation pulse width etc., produce corresponding stimulus sequence according to stimulation instructions.Digital to analog converter can adopt the model of TI company to be the chip of TLV5614, and support that 4 passages export, digital-to-analogue conversion figure place reaches 12-bit, ensure that the conversion accuracy of stimulus sequence.
Fig. 4 shows a kind of embodiment of multi-channel power amplification module.Multi-channel power amplification module comes from the stimulus sequence of digital to analog converter for receiving, and amplifies the power of stimulus sequence and produce stimulus signal.Multi-channel power amplification module can be made up of voltage follower circuit, metal-oxide-semiconductor power amplification circuit and transformer boost circuit.Stimulus sequence for receiving the stimulus sequence from digital to analog converter, and is sent to metal-oxide-semiconductor power amplification circuit by voltage follower circuit; Metal-oxide-semiconductor power amplification circuit, for receiving the stimulus sequence from voltage follower circuit, amplifies the power of stimulus sequence and produces stimulus signal, and stimulus signal being sent to transformer boost circuit; Stimulus signal for receiving the stimulus signal from metal-oxide-semiconductor power amplification circuit, and is sent to output current limiting monitoring module by transformer boost circuit.Voltage follower circuit mainly plays the effect of impedance transformation, the stimulus sequence of metal-oxide-semiconductor power amplification circuit logarithmic mode transducer carries out power amplification, transformer boost circuit passes through the different winding ratio of transformer primary secondary, the stimulus signal of generation is done process of further boosting, reaches the voltage amplitude needed for stimulation pulse signal.
Fig. 5 shows a kind of embodiment of output current limiting monitoring module.Output current limiting monitoring module comes from the stimulus signal of multi-channel power amplification module for receiving, stimulus signal is sent to multi-channel surface myoelectric electrode to stimulate, and the output current of Real-Time Monitoring stimulus signal, the strength signal of output current is sent to analog-digital converter.Output current limiting monitoring module is made up of diode bridge heap, accurate sample resistance, audion current-limiting circuit.The stimulation pulse signal that transformer boost circuit in multi-channel power amplification module produces is rectified into unidirectional stimulus waveform by diode bridge heap.Accurate sample resistance is used for carrying out current sampling to the Unidirectional stimulation waveform after rectification, is converted to magnitude of voltage.When the electric current monitored is greater than 10mA (RMS), audion current-limiting circuit is started working, and makes stimulating current be stabilized in set scope, ensures the safety that system uses.
Claims (9)
1. based on a diagnosis and therapy system for surface myoelectric, it is characterized in that, comprising:
Host computer acquisition module, for sending the acquisition instructions of collection surface electromyographic signal to communication module, and receives the surface electromyogram signal from communication module;
Communication module, for receive come from host computer acquisition module acquisition instructions, receive and come from the stimulation instructions of host computer circulation electrical stimulation module and host computer biofeedback electrical stimulation module, and receive the surface electromyogram signal from digital process controller;
Digital process controller, for carrying out digital filtering to the surface electromyogram signal coming from analog-digital converter, and to coming from acquisition instructions and the stimulation instructions decoding of communication module, to control analog-digital converter collection surface electromyographic signal, domination number weighted-voltage D/A converter produces stimulus sequence;
Host computer circulation electrical stimulation module, for receiving the circulation electricity irritation instruction of user's input, and passes to communication module by circulation electricity irritation instruction;
Host computer biofeedback electrical stimulation module, for receiving the biofeedback electricity irritation instruction of user's input, and passes to communication module by biofeedback electricity irritation instruction;
Host computer evaluation module, for receiving the surface electromyogram signal coming from host computer acquisition module, and gauging surface myoelectricity parameter;
Digital to analog converter, for receiving the stimulation instructions coming from digital process controller, and produces corresponding stimulus sequence according to stimulation instructions;
Multi-channel power amplification module, for receiving the stimulus sequence coming from digital to analog converter, and amplifies the power of stimulus sequence and produces stimulus signal, sending to output current limiting monitoring module;
Output current limiting monitoring module, for receiving the stimulus signal coming from multi-channel power amplification module, and being sent to by stimulus signal multi-channel surface myoelectric electrode to stimulate, the output current of Real-Time Monitoring stimulus signal, sends to analog-digital converter by the strength signal of output current;
Multi-channel surface myoelectric electrode, is sent to multichannel amplification filtering module for collection surface electromyographic signal, and passes to the position that will stimulate for the stimulus signal that receives output current limiting monitoring module;
Multichannel amplification filtering module, for receiving and amplifying the surface electromyogram signal coming from multi-channel surface myoelectric electrode, and does Filtering Processing by the surface electromyogram signal after amplifying;
Analog-digital converter, for receiving the surface electromyogram signal coming from multichannel amplification filtering module, and carries out analog digital conversion; Simultaneously for receiving the strength signal of the output current from output current limiting monitoring module, and carry out analog digital conversion, analog-digital converter is connected to digital process controller.
2. a kind of diagnosis and therapy system based on surface myoelectric according to claim 1, it is characterized in that: also comprise power module, described power module comprises insulating power supply, low-dropout linear voltage-regulating circuit and LC filter circuit, the outfan of insulating power supply respectively with the input of low-dropout linear voltage-regulating circuit, the input of LC filter circuit connects, the outfan of low-dropout linear voltage-regulating circuit is connected with the input of LC filter circuit, the outfan of LC filter circuit and described communication module, digital process controller, digital to analog converter, multi-channel power amplification module, output current limiting monitoring module, multichannel filtering and amplifying circuit, the input of analog-digital converter connects respectively.
3. the diagnosis and therapy system based on surface myoelectric according to claim 2, is characterized in that: described power module withstand voltagely should be more than or equal to 4000Vac.
4. a kind of diagnosis and therapy system based on surface myoelectric according to claim 1, it is characterized in that: described communication module turns USB line by high-speed figure optocoupler and serial ports and forms, described high-speed figure optocoupler is for receiving the surface electromyogram signal from digital process controller, and sent to by surface electromyogram signal serial ports to turn USB line, receive the acquisition instructions and the stimulation instructions that turn USB line from serial ports simultaneously, and acquisition instructions and stimulation instructions are sent to digital process controller; Serial ports turns USB line for receiving the stimulation instructions coming from host computer circulation electrical stimulation module, host computer biofeedback electrical stimulation module from the acquisition instructions of host computer acquisition module and reception, and described acquisition instructions and stimulation instructions are sent to described high-speed figure optocoupler, receive the surface electromyogram signal from high-speed figure optocoupler simultaneously, and surface electromyogram signal is sent to host computer acquisition module.
5. a kind of diagnosis and therapy system based on surface myoelectric according to claim 4, is characterized in that: the isolation voltage of described high-speed figure optocoupler is peak-to-peak value 7500Vac, and data transmission rate is 1MHz.
6. a kind of diagnosis and therapy system based on surface myoelectric according to claim 1, it is characterized in that: described multichannel amplification filtering module comprises the surface myoelectric process path of multiple passage, the surface myoelectric process path of each passage comprises pre-amplification circuit, active filter circuit and booster circuit;
Described pre-amplification circuit is for the surface electromyogram signal that receives from multi-channel surface myoelectric electrode and amplify, and the surface electromyogram signal after amplifying is sent to active filter circuit;
Described active filter circuit for receiving the surface electromyogram signal from pre-amplification circuit, and does Filtering Processing, and filtered surface electromyogram signal is sent to booster circuit;
Surface electromyogram signal for receiving the surface electromyogram signal from active filter circuit, and is sent to analog-digital converter by described booster circuit.
7. a kind of diagnosis and therapy system based on surface myoelectric according to claim 6, is characterized in that: the differential input structure of three operational amplifier compositions that described pre-amplification circuit adopts same silicon chip to manufacture.
8. a kind of diagnosis and therapy system based on surface myoelectric according to claim 1, it is characterized in that: described multi-channel power amplification module comprises the electricity irritation path of multiple passage, the electricity irritation path of each passage comprises voltage follower circuit, metal-oxide-semiconductor power amplification circuit and transformer boost circuit;
Stimulus sequence for receiving the stimulus sequence from digital to analog converter, and is sent to metal-oxide-semiconductor power amplification circuit by described voltage follower circuit;
Described metal-oxide-semiconductor power amplification circuit, for receiving the stimulus sequence from voltage follower circuit, amplifies the power of stimulus sequence and produces stimulus signal, and stimulus signal being sent to transformer boost circuit;
Stimulus signal for receiving the stimulus signal from metal-oxide-semiconductor power amplification circuit, and is sent to output current limiting monitoring module by described transformer boost circuit.
9. a kind of diagnosis and therapy system based on surface myoelectric according to claim 1, is characterized in that: described output current limiting monitoring module comprises diode bridge heap, accurate sample resistance and audion current-limiting circuit;
Stimulus signal for receiving the stimulus signal from multi-channel power amplification module, and is sent to accurate sample resistance by described diode bridge heap;
Stimulus signal for receiving the stimulus signal from diode bridge heap, and is sent to audion current-limiting circuit by described accurate sample resistance;
Described audion current-limiting circuit is for receiving the stimulus signal from accurate sample resistance, and stimulus signal is sent to multi-channel surface myoelectric electrode and stimulates, the output current of Real-Time Monitoring stimulus signal while of audion current-limiting circuit, and the strength signal of output current is sent to analog-digital converter.
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN115778398B (en) * | 2022-11-11 | 2023-08-08 | 中节能风力发电股份有限公司 | Body surface electromyographic signal detection circuit and detection method |
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Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2060075U (en) * | 1989-09-02 | 1990-08-08 | 西安医科大学 | Multi-channel qigong feedback treating instrument |
| US5462065A (en) * | 1994-08-17 | 1995-10-31 | Cusimano; Maryrose | Integrated movement analyziing system |
| CN1215614A (en) * | 1998-12-04 | 1999-05-05 | 清华大学 | Functional neuromyo-electric signal identification and stimulation apparatus |
| US20020133194A1 (en) * | 2000-11-29 | 2002-09-19 | Pairash Thajchayapong | Method and apparatus for treating poor laryngeal-elevation disorder with sequential-high voltage electrical stimulation |
| US20040039418A1 (en) * | 2002-04-17 | 2004-02-26 | Elstrom Tuan A. | Preparation for transmission and reception of electrical signals |
| CN1810319A (en) * | 2005-01-25 | 2006-08-02 | 电子科技大学 | Electromechanical bruxism monitoring and treating equipment |
| CN101036824A (en) * | 2006-03-13 | 2007-09-19 | 张潇潇 | Reconstructing device of neuronic network |
| US20070282217A1 (en) * | 2006-06-01 | 2007-12-06 | Mcginnis William J | Methods & systems for intraoperatively monitoring nerve & muscle frequency latency and amplitude |
| US7593769B1 (en) * | 2006-02-14 | 2009-09-22 | Iq Biolabs, Inc. | Surface electromyography index |
| CN101536905A (en) * | 2009-05-06 | 2009-09-23 | 中国科学技术大学 | Surface electromyography system and electrode plate thereof |
| CN101773393A (en) * | 2010-01-14 | 2010-07-14 | 中国科学院合肥物质科学研究院 | Low-cost multi-channel surface myoelectric amplification module |
| CN201537319U (en) * | 2009-11-10 | 2010-08-04 | 上海理工大学 | Myoelectric feedback electric stimulation instrument |
| CN101879062A (en) * | 2010-07-01 | 2010-11-10 | 清华大学 | Surface electromyograph, measuring box, surface electromyography module and measuring method |
| CN102049095A (en) * | 2009-11-10 | 2011-05-11 | 上海理工大学 | Electromyographic feedback electrical stimulator |
| CN102090885A (en) * | 2010-12-03 | 2011-06-15 | 浙江大学 | Multichannel human body skin potential acquiring system |
| 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 |
| CN202619650U (en) * | 2012-04-28 | 2012-12-26 | 宋天伟 | EMG (electromyographic) feedback instrument |
| CN202654544U (en) * | 2012-04-18 | 2013-01-09 | 上海诺诚电气有限公司 | Neuromuscular rehabilitation instrument based on electromyographic feedback |
-
2013
- 2013-06-15 CN CN201310236196.XA patent/CN103300853B/en active Active
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2060075U (en) * | 1989-09-02 | 1990-08-08 | 西安医科大学 | Multi-channel qigong feedback treating instrument |
| US5462065A (en) * | 1994-08-17 | 1995-10-31 | Cusimano; Maryrose | Integrated movement analyziing system |
| CN1215614A (en) * | 1998-12-04 | 1999-05-05 | 清华大学 | Functional neuromyo-electric signal identification and stimulation apparatus |
| US20020133194A1 (en) * | 2000-11-29 | 2002-09-19 | Pairash Thajchayapong | Method and apparatus for treating poor laryngeal-elevation disorder with sequential-high voltage electrical stimulation |
| US20040039418A1 (en) * | 2002-04-17 | 2004-02-26 | Elstrom Tuan A. | Preparation for transmission and reception of electrical signals |
| CN1810319A (en) * | 2005-01-25 | 2006-08-02 | 电子科技大学 | Electromechanical bruxism monitoring and treating equipment |
| US7593769B1 (en) * | 2006-02-14 | 2009-09-22 | Iq Biolabs, Inc. | Surface electromyography index |
| CN101036824A (en) * | 2006-03-13 | 2007-09-19 | 张潇潇 | Reconstructing device of neuronic network |
| US20070282217A1 (en) * | 2006-06-01 | 2007-12-06 | Mcginnis William J | Methods & systems for intraoperatively monitoring nerve & muscle frequency latency and amplitude |
| CN101536905A (en) * | 2009-05-06 | 2009-09-23 | 中国科学技术大学 | Surface electromyography system and electrode plate thereof |
| CN201537319U (en) * | 2009-11-10 | 2010-08-04 | 上海理工大学 | Myoelectric feedback electric stimulation instrument |
| CN102049095A (en) * | 2009-11-10 | 2011-05-11 | 上海理工大学 | Electromyographic feedback electrical stimulator |
| CN101773393A (en) * | 2010-01-14 | 2010-07-14 | 中国科学院合肥物质科学研究院 | Low-cost multi-channel surface myoelectric amplification module |
| CN101879062A (en) * | 2010-07-01 | 2010-11-10 | 清华大学 | Surface electromyograph, measuring box, surface electromyography module and measuring method |
| CN102090885A (en) * | 2010-12-03 | 2011-06-15 | 浙江大学 | Multichannel human body skin potential acquiring system |
| 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 |
| CN202654544U (en) * | 2012-04-18 | 2013-01-09 | 上海诺诚电气有限公司 | Neuromuscular rehabilitation instrument based on electromyographic feedback |
| CN202619650U (en) * | 2012-04-28 | 2012-12-26 | 宋天伟 | EMG (electromyographic) feedback instrument |
Non-Patent Citations (5)
| Title |
|---|
| 人体表面肌电信号处理及其在人机智能系统中的应用研究;蔡春风;《中国优秀硕士学位论文全文数据库》;20061215;E080-22 * |
| 用于脑卒中病人手功能康复的功能性电刺激系统的研制;贾佳;《中国优秀硕士学位论文全文数据库》;20120715;C030-127 * |
| 电刺激诱发表面肌电信号的初步实验研究;何庆华 等;《中国临床康复》;20040815;第8卷(第23期);4730-4731 * |
| 肌电图的电子计算机分析;吴宗耀;《第三军医大学学报 》;19810302(第1期);6-12 * |
| 肌电引导治疗仪的涉及;朱显武 等;《中国医疗器械杂志 》;20050731;第29卷(第4期);270-272 * |
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