WO2016026100A1 - 一种肌电信号采集装置 - Google Patents

一种肌电信号采集装置 Download PDF

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Publication number
WO2016026100A1
WO2016026100A1 PCT/CN2014/084813 CN2014084813W WO2016026100A1 WO 2016026100 A1 WO2016026100 A1 WO 2016026100A1 CN 2014084813 W CN2014084813 W CN 2014084813W WO 2016026100 A1 WO2016026100 A1 WO 2016026100A1
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WIPO (PCT)
Prior art keywords
circuit
resistor
signal
operational amplifier
output
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Application number
PCT/CN2014/084813
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English (en)
French (fr)
Inventor
李涛
余尧
谭玉波
Original Assignee
华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2014/084813 priority Critical patent/WO2016026100A1/zh
Priority to CN201480036369.6A priority patent/CN106102575A/zh
Publication of WO2016026100A1 publication Critical patent/WO2016026100A1/zh

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/24Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316Modalities, i.e. specific diagnostic methods
    • A61B5/389Electromyography [EMG]

Definitions

  • Electromyography signal collection device
  • the present invention relates to the field of electronic technologies, and in particular, to a myoelectric signal gathering device. Background technique
  • the myoelectric signal is a sequence of action potentials generated by the unit of motion recruited by muscle excitement. It is a non-stationary weak signal superimposed on the surface of the skin.
  • the human surface EMG signal can reflect the muscle state and is used in sports medicine, clinical medicine and human-computer interaction intelligent systems. In the field of sports medicine, muscle strength and muscle fatigue can be assessed by EMG signals, helping athletes to establish scientific training methods, thereby improving the performance of sports competitions. In addition, by comparing normal EMG signals, athletes can be helped. Adjust the tension, anxiety and irritability on the spot. In the field of clinical medicine, EMG signals can be used to diagnose muscle diseases such as muscle atrophy and muscle weakness, and can also be used to assess post-treatment rehabilitation assessments.
  • the eigenvalues of the EMG signals can reflect the human body's motion intentions, it can be used as a control information source for prosthetic and external bone robots, and can also be used for gait analysis, muscle tension assessment, and the like.
  • the myoelectric signal is mainly collected by a surface electromyography measuring instrument, so it is necessary to provide another collecting device. Summary of the invention
  • the present invention provides an electromyographic signal collection device by which surface muscle signals can be collected.
  • a first aspect of the embodiments of the present invention provides an EMG signal collection device, including: a signal sampling circuit, at least one group of lead circuits, and at least one signal adjusting circuit corresponding to the at least one group of lead circuits.
  • the lead circuit includes an electrode sheet, wherein:
  • the at least one set of lead circuits for acquiring an electromyogram signal of a surface of the body through the electrode sheet, and outputting the myoelectric signal to the signal adjustment circuit;
  • the at least one signal adjustment circuit is connected to the at least one group of lead circuits for The electromyogram voltage obtained by the adjustment and processing of the myoelectric signal is output to the signal sampling circuit;
  • the signal sampling circuit is connected to the at least one signal adjusting circuit for performing the electromyogram voltage Sample processing to obtain myoelectric data signals;
  • the signal sampling circuit When the mobile terminal is connected to the signal sampling circuit, the signal sampling circuit outputs the somatosensory data signal obtained by the sample processing to the mobile terminal, so that the mobile terminal performs the electromyogram data signal
  • the operation analysis process displays and displays the analysis result obtained by the operation analysis process.
  • the device includes an interface conversion circuit, where the interface conversion circuit includes a UART interface and a USB interface, and the UART interface is connected to the signal sampling circuit, the USB The interface is connected to the mobile terminal, and the interface conversion circuit is configured to: according to the myoelectric data signal output by the signal sampling circuit received by the UART interface, send the myoelectric data signal through the USB interface Output to the mobile terminal
  • the signal conditioning circuit includes a voltage follower circuit for buffering the EMG signal.
  • the lead circuit includes a positive electrode tab and a negative electrode tab
  • the voltage follower circuit includes a positive pole An input terminal for receiving the electromyogram signal obtained by the positive electrode tab, and a negative input terminal for receiving the electromyogram signal obtained by the positive electrode tab
  • the voltage follower circuit is configured to buffer the electromyogram signal received by the positive input terminal and buffer the myoelectric signal received by the negative input terminal.
  • the voltage follower circuit includes a first resistor, a first diode, and a second a pole tube, a first operational amplifier, a second resistor, a third diode, a fourth diode, and a second operational amplifier, wherein:
  • One end of the first resistor is connected to the positive input terminal of the voltage follower circuit, and the other end of the first resistor is respectively connected to a negative pole of the first diode and a positive pole of the second diode And a positive input terminal of the first operational amplifier, wherein a negative input terminal of the first operational amplifier is respectively connected to a positive electrode of the first diode, a negative electrode of the second diode, and the first operation An output of the amplifier is connected, and an output of the first operational amplifier is connected to a positive output of the voltage follower circuit;
  • One end of the second resistor is connected to the negative input terminal of the voltage follower circuit, and the other end of the second resistor is respectively connected to a negative pole of the third diode and a positive pole of the fourth diode And a positive input terminal of the second operational amplifier, wherein a negative input terminal of the second operational amplifier is respectively connected to a positive electrode of the third diode, a negative electrode of the fourth diode, and the second operation An output of the
  • the signal adjusting circuit includes a first amplifying circuit, and the first amplifying circuit is configured to perform a first-stage amplification process on the myoelectric signal.
  • the first amplifying circuit includes a third electrical group, a fourth electrical resistor, and a third operational amplifier, the first a capacitor and a second capacitor, wherein:
  • One end of the first capacitor is connected to a positive input end of the first amplifying circuit, and the other end of the first capacitor is respectively connected to one end of the third resistor and a positive input end of the third operational amplifier.
  • One end of the second capacitor is connected to a negative input end of the first amplifying circuit, and the other end of the second capacitor is respectively connected to one end of the fourth resistor and a negative input end of the third operational amplifier.
  • the other end of the fourth resistor is respectively connected to the other end of the third resistor and the voltage reference point of the first amplifying circuit, and the output end of the third operational amplifier and the output end of the first amplifying circuit connection.
  • the signal adjustment circuit further includes a floating circuit, where the floating circuit is respectively The lead circuit and the first amplifying circuit are connected to provide a floating voltage to the lead circuit according to a reference voltage of a voltage reference point of the first amplifying circuit.
  • the lead circuit includes a reference electrode
  • the floating circuit includes a fourth operational amplifier, a fifth resistor, a fifth operational amplifier, a sixth resistor, a third capacitor, and a seventh resistor, wherein: a positive input terminal of the fourth operational amplifier is connected to another end of the third resistor, and the fourth operational amplifier The negative input terminals are respectively connected to the output end of the fourth operational amplifier and one end of the fifth resistor, and the other end of the fifth resistor is respectively connected to the negative input terminal and the sixth resistor of the fifth operational amplifier One end of the third capacitor and one end of the third capacitor are connected, the fifth operational amplifier The output ends of the amplifiers are respectively connected to the other end of the sixth resistor, the other end of the third capacitor, and one end of the seventh resistor, and the other end of the seventh resistor is connected to the reference electrode sheet.
  • the signal adjusting circuit includes a filtering circuit, and the filtering circuit is configured to perform filtering processing on the myoelectric signal.
  • the filter circuit includes an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, and a first a twelve-resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, and a filter chip, wherein the filter chip includes a first voltage input terminal, a second voltage input terminal, an auxiliary operational amplifier positive input terminal, and an auxiliary operational amplifier Inverting input, low-pass output, band-pass output, high-pass output, first frequency adjustment terminal, second frequency adjustment terminal, auxiliary operational amplifier output terminal, and ground terminal, wherein:
  • the first voltage input end is connected to an input end of the filter circuit
  • the second voltage input end is connected to one end of the eighth resistor
  • the other end of the eighth resistor is respectively connected to the auxiliary operational amplifier Connecting to the input end and the ground end
  • the auxiliary op amp reverse input end is respectively connected to one end of the ninth resistor, one end of the tenth resistor, and one end of the eleventh resistor
  • the other end of the nine resistor is connected to the low-pass output
  • the other end of the tenth resistor is connected to the high-pass output and one end of the twelfth resistor
  • the other end of the twelfth resistor is One end of the thirteenth resistor is connected, the other end of the thirteenth resistor is connected to the first frequency adjustment end, and the second frequency adjustment end is connected to one end of the fourteenth resistor, the tenth
  • the other end of the four resistor is connected to one end of the fifteenth resistor, the other end of the fifteenth resistor is connected to
  • the signal adjustment circuit includes a level adjustment circuit, and the level adjustment circuit is configured to perform level adjustment processing on the myoelectric signal.
  • the level adjusting circuit includes a sixteenth resistor, a seventeenth resistor, and an eighteenth resistor a nineteenth resistor, a twentieth resistor, a twenty-first resistor, a power supply, a fifth diode, and a sixth operational amplifier, wherein:
  • One end of the sixteenth resistor is connected to an input end of the level adjusting circuit, the other end of the sixteenth resistor is opposite to one end of the seventeenth resistor, one end of the eighteenth resistor, and the a positive input terminal of the sixth operational amplifier is connected, and the other end of the seventeenth resistor is connected to the power supply.
  • the other end of the eighteenth resistor is grounded, and the negative input terminal of the sixth operational amplifier is connected to one end of the nineteenth resistor and one end of the twentieth resistor, and the other end of the nineteenth resistor Grounding, the other end of the twentieth resistor is connected to an output end of the sixth operational amplifier and one end of the second eleventh resistor, and the other end of the twenty-first resistor is opposite to the fifth dipole.
  • the cathode of the tube and the output of the level adjustment circuit are connected.
  • the signal adjusting circuit includes a voltage following circuit, a first amplifying circuit, a filtering circuit, a second amplifying circuit, a level adjusting circuit, and a floating circuit, where:
  • the voltage following circuit is connected to the lead circuit for buffering the myoelectric signal, and outputting the buffered myoelectric signal to the first amplifying circuit;
  • the first amplifying circuit is connected to the voltage follower circuit, configured to perform a first-stage amplification process on the buffer-processed myoelectric signal, and output the myoelectric signal processed by the first-stage amplification To the filter circuit;
  • the filter circuit is connected to the first amplifying circuit, configured to perform filtering processing on the first-stage amplified processed myoelectric signal, and output the filtered processed myoelectric signal to the second amplifying circuit;
  • the second amplifying circuit is connected to the filtering circuit, configured to perform second-stage amplification processing on the filtered processed muscle telecommunications, and output the second-stage amplified processed myoelectric signal to the Level adjustment circuit
  • the level adjusting circuit is connected to the second amplifying circuit, and configured to perform level adjustment processing on the second-stage amplified processed myoelectric signal, and the electromyogram obtained by the level adjusting process Voltage output to the signal sampling circuit;
  • the floating circuit is respectively connected to the lead circuit and the first amplifying circuit for supplying a floating voltage to the lead circuit according to a reference voltage of a voltage reference point of the first amplifying circuit.
  • the second amplifying circuit includes a second twelve resistance, a twenty-third resistance, and a seventh Operational amplifier, where:
  • a positive input terminal of the seventh operational amplifier is connected to an input end of the second amplifying circuit
  • the negative input terminal of the seventh operational amplifier is connected to one end of the twenty-second resistor and one end of the twenty-third resistor, and the other end of the twenty-second resistor is grounded, the twenty-third resistor The other end is connected to the output of the seventh operational amplifier, and the output of the seventh operational amplifier is connected to the output of the second amplifying circuit.
  • the device includes a power supply circuit, and the power supply circuit separately adjusts with the signal The circuit and the signal sampling circuit are connected to supply power to the signal conditioning circuit and the signal sampling circuit.
  • a second aspect of the embodiments of the present invention provides an EMG signal collection system, including an EMG signal collection device and a mobile terminal, wherein:
  • the EMG signal collecting device includes a signal sampling circuit, at least one set of lead circuits, and at least one signal adjusting circuit corresponding to the at least one set of lead circuits, wherein the lead circuit includes an electrode sheet, wherein: Said at least one set of lead circuits for acquiring an electromyogram signal of a surface of the body through the electrode sheet, and outputting the myoelectric signal to the signal adjusting circuit; the at least one signal adjusting circuit, and the at least one group a lead circuit correspondingly connected to output the myoelectric voltage obtained by the adjustment and processing of the myoelectric signal to the signal sampling circuit; the signal sampling circuit is connected to the at least one signal adjusting circuit, Performing a sample-like treatment on the myoelectric voltage to obtain an electromyographic data signal;
  • the mobile terminal is configured to acquire an EMG data signal obtained by sampling the EMG voltage by the signal sampling circuit, perform operation analysis processing on the EMG data signal, and display an operation analysis process. Analysis results.
  • the electromyogram signal of the surface of the body is first obtained by the electrode piece of the lead circuit, and the myoelectric signal is output to the signal adjustment circuit; and then the electromyogram obtained by the signal adjustment circuit is adjusted and processed.
  • the voltage is output to the signal sampling circuit, and finally the signal sampling circuit performs the sample processing on the myoelectric voltage to obtain the myoelectric data signal, thereby collecting the myoelectric data signal through the device, and collecting the myoelectric data signal.
  • FIG. 1 is a schematic structural view of a myoelectric signal collecting device according to a first embodiment of the present invention
  • FIG. 2 is a schematic structural view of a myoelectric signal collecting device according to a second embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a voltage follower circuit according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a voltage follower circuit according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of a first amplifying circuit according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a floating circuit according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a filter circuit according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a level adjustment circuit according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a second amplifying circuit according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a myoelectric signal collection system according to an embodiment of the present invention. detailed description
  • FIG. 1 is a device for collecting myoelectric signals according to a first embodiment of the present invention.
  • the EMG signal collection device in the embodiment of the present invention includes: a signal sampling circuit 130, at least one set of lead circuits 110, and at least one signal adjusting circuit 120 corresponding to the at least one set of lead circuits.
  • the lead circuit 130 includes an electrode sheet, wherein:
  • At least one set of lead circuits 110 is configured to acquire an electromyogram signal of the surface of the body through the electrode sheets, and output the myoelectric signals to the signal adjustment circuit.
  • At least one set of lead circuits 110 may include 24 lead wires and 24 electrode pads, and is divided into 8 sets of lead circuits, each set of lead circuits includes 3 lead wires and 3 electrode pads, and the electrode pads It may be an Ag-AgCI electrode sheet, and the electrode sheets of each group of lead circuits include a positive electrode sheet, a negative electrode sheet, and a reference electrode sheet.
  • the electrode sheets can be respectively placed at different positions on the surface of the body to obtain the myoelectric signals at different positions on the surface of the body.
  • the apparatus in the embodiment of the present invention is not limited to including eight sets of lead circuits, and may also include any other number of lead circuits.
  • the at least one signal adjustment circuit 120 is connected to the at least one set of lead circuits 110 for outputting the myoelectric voltage obtained by the adjustment and processing of the myoelectric signal to the signal sampling circuit.
  • the device may also include eight signal adjustment circuits, and each of the signal adjustment circuits is respectively connected to a group of lead circuits, as with the number of groups of the at least one set of lead circuits 110. It should be noted that the apparatus in the embodiment of the present invention is not limited to including eight signal adjustment circuits, and may include any other number of signal adjustment circuits.
  • the signal adjustment circuit receives the myoelectric signal output by the lead circuit, the signal adjustment circuit can buffer, amplify, filter or level adjust the myoelectric signal, and convert the myoelectric signal into a muscle of 0-3.3V. Electric voltage.
  • the signal adjustment circuit 120 may include a voltage follower circuit for buffering the myoelectric signal to increase the input impedance.
  • the voltage follower circuit may include a positive input end for receiving the electromyogram signal obtained by the positive electrode tab, and a negative input end for receiving the positive electrode lead piece.
  • the EMG signal, the voltage follower circuit is configured to buffer the EMG signal received by the positive input terminal and buffer the EMG signal received by the negative input terminal.
  • the voltage follower circuit may include a first resistor R1, a first diode D1, a second diode D3, a first operational amplifier U1, a second resistor R2, a third diode D2, and a fourth Diode D4, second operational amplifier U2, where:
  • One end of the first resistor R1 is connected to the positive input terminal IN+ of the voltage follower circuit, and the other end of the first resistor R1 is respectively opposite to the cathode of the first diode D1, the anode of the second diode D3, and the first operational amplifier U1.
  • the positive input terminal is connected, and the negative input terminal of the first operational amplifier U1 is respectively connected to the positive pole of the first diode D1, the negative pole of the second diode D3, and the output end of the first operational amplifier U1, and the first operational amplifier U1
  • the output end is connected to the positive output end of the voltage follower circuit; one end R2 of the second resistor is connected to the negative input terminal IN- of the voltage follower circuit, and the other end of the second resistor R2 is respectively connected to the negative pole and the fourth of the third diode D2
  • the anode of the diode D4 and the anode input terminal of the second operational amplifier U2 are connected, and the cathode input terminal of the second operational amplifier U2 is respectively connected to the anode of the third diode D2, the cathode of the fourth diode D4, and the second operation.
  • the signal adjustment circuit 120 may include a first amplification circuit, and the first amplification circuit is configured to perform a first-stage amplification process on the myoelectric signal.
  • the first amplifying circuit includes a third electric group R4, a fourth resistor R3, a third operational amplifier U3, a first capacitor C6 and a second capacitor C5, wherein:
  • One end of the first capacitor C6 is connected to the positive input terminal of the first amplifying circuit, and the other end of the first capacitor C6 is respectively connected to one end of the third resistor R4 and the positive input terminal of the third operational amplifier U3, and one end of the second capacitor C5 Connected to the negative input terminal of the first amplifying circuit, the other end of the second capacitor C5 is respectively connected to one end of the fourth resistor R3 and the negative input terminal of the third operational amplifier U3, and the other end of the fourth resistor R3 is respectively connected with the third resistor
  • the other end of R4 is connected to the voltage reference point of the first amplifying circuit, and the output of the third operational amplifier U3 is connected to the output of the first amplifying circuit.
  • the signal adjustment circuit 120 may further include a floating circuit, and the floating circuit is respectively connected to the lead circuit 110 and the first amplifying circuit, and is used for the reference voltage according to the voltage reference point of the first amplifying circuit.
  • the floating circuit includes a fourth operational amplifier U4, a fifth resistor R6, a fifth operational amplifier U5, a sixth resistor R7, a third capacitor C9, and a seventh resistor R10, wherein:
  • the positive input terminal of the fourth operational amplifier U4 is connected to the other end of the third resistor R4, and the negative input terminal of the fourth operational amplifier U4 is respectively connected to the output end of the fourth operational amplifier U4 and one end of the fifth resistor R6, and the fifth resistor
  • the other end of the R6 is connected to the negative input terminal of the fifth operational amplifier U5, one end of the sixth resistor R7, and one end of the third capacitor C9.
  • the output end of the fifth operational amplifier U5 and the other end of the sixth resistor R7 are respectively The other end of the third capacitor C9 and one end of the seventh resistor R10 are connected, and the other end of the seventh resistor R10 is connected to the reference electrode sheet.
  • the signal adjustment circuit 120 may include a filter circuit for filtering the myoelectric signal.
  • the filter circuit includes an eighth resistor R25, a ninth resistor R24, a tenth resistor R23, an eleventh resistor R30, a twelfth resistor R27, a thirteenth resistor R28, a fourteenth resistor R29, and a tenth.
  • the filter chip includes a first voltage input terminal VIN3, a second voltage input terminal VIN2, an auxiliary operational amplifier forward input terminal AUXIN+, and an auxiliary operational amplifier reverse input terminal AUXIN -, low-pass output LPOUT, band-pass output BPOUT, high-pass output HPOUT, first frequency adjustment terminal FADJ1, second frequency adjustment terminal FADJ2, auxiliary op amp output AUXOUT, and ground GND, where:
  • the first voltage input terminal VIN3 is connected to the input end of the filter circuit
  • the second voltage input terminal VIN2 is connected to one end of the eighth resistor R25
  • the other end of the eighth resistor R25 is respectively connected to the auxiliary operational amplifier forward input terminal AUXIN+ and the ground terminal GND.
  • the auxiliary input op amp reverse input terminal AUXIN- is respectively connected to one end of the ninth resistor R24, one end of the tenth resistor R23, and one end of the eleventh resistor R30, and the other end of the ninth resistor R24 is connected to the low-pass output terminal LPOUT.
  • the other end of the tenth resistor R23 is connected to one end of the high-pass output terminal HP0UT and the twelfth resistor R27, the other end of the twelfth resistor R27 is connected to one end of the thirteenth resistor R28, and the other end of the thirteenth resistor R28 is
  • the first frequency adjustment terminal FADJ1 is connected
  • the second frequency adjustment terminal FADJ2 is connected to one end of the fourteenth resistor R29
  • the other end of the fourteenth resistor R29 is connected to one end of the fifteenth resistor R26
  • the other end of the fifteenth resistor R26 Connected to the band-pass output terminal BP0UT
  • the auxiliary operational amplifier output terminal AUXOUT is respectively connected to the other end of the eleventh resistor R30 and the output end of the filter circuit.
  • the signal adjustment circuit 120 may include a level adjustment circuit for level adjustment processing of the myoelectric signal.
  • the level adjusting circuit includes a sixteenth resistor R17, a seventeenth resistor R20, an eighteenth resistor R19, a nineteenth resistor R18, a twentieth resistor R21, a twenty-first resistor R22, and a power supply.
  • a fifth diode D5 and a sixth operational amplifier U6 wherein: one end of the sixteenth resistor R17 is connected to the input end of the level adjusting circuit, and the other end of the sixteenth resistor R17 and one end of the seventeenth resistor R20, One end of the eighteenth resistor R19 is connected to the positive input terminal of the sixth operational amplifier U6, the other end of the seventeenth resistor R20 is connected to the power supply, the other end of the eighteenth resistor R19 is grounded, and the negative input of the sixth operational amplifier U6 is The end is connected to one end of the nineteenth resistor R18 and one end of the twentieth resistor R21, the other end of the nineteenth resistor R18 is grounded, the other end of the twentieth resistor R21 is connected to the output of the sixth operational amplifier U6, and the twentieth One end of a resistor R22 is connected, and the other end of the twenty-first resistor R22 is connected to the cathode of the fifth diode D5 and the output terminal of the level adjusting circuit.
  • the signal sampling circuit 130 is connected to at least one signal adjusting circuit 120 for performing sample processing on the myoelectric voltage to obtain an electromyographic data signal.
  • the signal sampling circuit 130 can be a single chip microcomputer, and the at least one signal adjusting circuit is configured. 120 is respectively connected to a plurality of sampling channels on the single chip microcomputer.
  • the single-chip microcomputer can select each sampling channel according to the preset sampling frequency through the internal switching switch, and respectively cycle the myoelectric voltage outputted by each signal adjusting circuit to obtain at least one electromyographic data. signal.
  • the signal sampling circuit 130 When the mobile terminal establishes a connection with the device, the signal sampling circuit 130 outputs the myoelectric data signal obtained by the sample processing to the mobile terminal, so that the mobile terminal performs operation analysis processing on the myoelectric data signal and displays the operation analysis processing. Analysis results.
  • the mobile terminal can also upload the EMG data signal or analysis result to the network cloud storage platform to realize information sharing.
  • the use of a mobile terminal to analyze and process the myoelectric data signals obtained by the electromyography collection device is convenient for the user to carry and analyze the electromyogram signal more conveniently.
  • the electromyogram signal of the surface of the body is first obtained by the electrode piece of the lead circuit, and the myoelectric signal is output to the signal adjustment circuit; and then the electromyogram obtained by the signal adjustment circuit is adjusted and processed.
  • the voltage is output to the signal sampling circuit, and finally the signal sampling circuit performs the sample processing on the myoelectric voltage to obtain the myoelectric data signal, thereby collecting the myoelectric data signal through the device, and collecting the myoelectric data signal.
  • FIG. 2 is a schematic structural diagram of a myoelectric signal collecting device according to a second embodiment of the present invention.
  • the EMG signal collecting device in the embodiment of the present invention includes at least one set of lead circuit 210, at least one signal adjusting circuit 220, a signal sampling circuit 230, an interface converting circuit 240, and a power supply circuit 260. It can be connected to the mobile terminal 250, wherein:
  • At least one set of lead circuits 210 for acquiring an electromyogram signal of the surface of the body through the electrode sheets, and outputting the myoelectric signals to the signal adjustment circuit.
  • At least one set of lead circuits 210 may include 24 lead wires and 24 electrode pads, and is divided into 8 sets of lead circuits, each set of lead circuits includes 3 lead wires and 3 electrode pads, and the electrode pads It may be an Ag-AgCI electrode sheet, and the electrode sheets of each group of lead circuits include a positive electrode sheet, a negative electrode sheet, and a reference electrode sheet.
  • the electrode sheets can be placed at different positions on the surface of the body to obtain the myoelectric signals at different positions on the surface of the body.
  • the apparatus in the embodiment of the present invention is not limited to including eight sets of lead circuits, and may include any other number of lead circuits.
  • At least one signal adjustment circuit 220 is connected to the lead circuit 210 for using the EMG signal
  • the myoelectric voltage obtained after the adjustment process is output to the signal sampling circuit.
  • the EMG signal collection device may also include eight signal adjustment circuits, and each of the signal adjustment circuits is respectively connected to a group of lead circuits, as with the number of groups of the at least one set of lead circuits 210. It should be noted that the apparatus in the embodiment of the present invention is not limited to including eight signal adjustment circuits, and may include any other number of signal adjustment circuits.
  • the signal adjustment circuit receives the myoelectric signal output by the lead circuit, the signal adjustment circuit can buffer, amplify, filter or level adjust the myoelectric signal, and convert the myoelectric signal into a muscle of 0-3.3V. Electric voltage.
  • the signal sampling circuit 230 is connected to the signal adjusting circuit 220 for performing the sample processing on the myoelectric voltage to obtain the myoelectric data signal.
  • the signal sampling circuit 230 can be a single chip, and the at least one signal adjusting circuit 220 is respectively connected to a plurality of sampling channels on the single chip.
  • the single-chip microcomputer can select each sampling channel according to the preset sampling frequency through the internal switching switch, and respectively cycle the myoelectric voltage outputted by each signal adjusting circuit to obtain at least one electromyographic data. signal.
  • the interface conversion circuit 240 includes a UART (Universal Asynchronous Receiver/Transmitter) interface and a USB (Universal Serial Bus) interface, and the UART interface is connected to the signal sampling circuit 230, and the USB interface and the mobile terminal are connected. 250 is connected, and the interface conversion circuit 240 is configured to output the myoelectric data signal to the mobile terminal 250 through the USB interface according to the myoelectric data signal output by the signal sampling circuit 230 received by the UART interface. It should be noted that, when the signal sampling circuit 230 outputs the myoelectric data signal through the UART interface, and the mobile terminal 250 receives the myoelectric data signal through the USB, the device in the embodiment of the present invention may include the interface conversion circuit 240.
  • the signal sampling circuit 230 When the mobile terminal 250 is connected to the signal sampling circuit 230 through the interface conversion circuit 240, the signal sampling circuit 230 outputs the somatosensory data signal obtained by the sample processing to the mobile terminal 250, so that the mobile terminal 250 performs the myoelectric data signal.
  • the operation analysis process displays and displays the analysis result obtained by the operation analysis process.
  • the mobile terminal 250 can also upload the EMG data signal or analysis result to the network cloud storage platform to achieve information sharing. Compared with the use of the computer, the use of the mobile terminal 250 to calculate and process the myoelectric data signals obtained by the electromyography collection device is convenient for the user to carry and analyze the analysis of the myoelectric signal more conveniently.
  • the power supply circuit 260 is respectively connected to the signal adjustment circuit 220, the signal sampling circuit 230, and the mobile terminal
  • the terminal 250 is connected to supply power to the signal adjustment circuit 220, the signal sampling circuit 230, and the mobile terminal 250.
  • the electromyogram signal of the surface of the body is first obtained by the electrode piece of the lead circuit, and the myoelectric signal is output to the signal adjustment circuit; and then the electromyogram obtained by the signal adjustment circuit is adjusted and processed.
  • the voltage is output to the signal sampling circuit, and finally the signal sampling circuit performs the sample processing on the myoelectric voltage to obtain the myoelectric data signal, thereby collecting the myoelectric data signal through the device, and collecting the myoelectric data signal.
  • FIG. 3 is a schematic structural diagram of a myoelectric signal collecting device according to a third embodiment of the present invention. The device is not limited to the one shown in FIG.
  • the EMG signal collection device in the embodiment of the present invention includes:
  • At least one set of lead circuit 310 is configured to acquire an electromyogram signal of the surface of the body through the electrode sheet, and output the myoelectric signal to the signal adjusting circuit.
  • At least one set of lead circuits 310 may include 24 lead wires and 24 electrode pads, and is divided into 8 sets of lead circuits, each set of lead circuits includes 3 lead wires and 3 electrode pads, and the electrode pads It may be an Ag-AgCI electrode sheet, and the electrode sheets of each group of lead circuits include a positive electrode sheet, a negative electrode sheet, and a reference electrode sheet.
  • the electrode sheets can be placed at different positions on the surface of the body to obtain the myoelectric signals at different positions on the surface of the body.
  • the apparatus in the embodiment of the present invention is not limited to including eight sets of lead circuits, and may include any other number of lead circuits.
  • At least one signal adjustment circuit 320 is connected to at least one set of lead circuits 310 for outputting the myoelectric voltage obtained by adjusting the myoelectric signal to the signal sampling circuit.
  • the device may also include eight signal adjustment circuits, and each of the signal adjustment circuits is respectively connected to a group of lead circuits, as with the number of groups of the at least one set of lead circuits 310.
  • the apparatus in the embodiment of the present invention is not limited to including eight signal adjustment circuits, and may also include He adjusts the circuit for any number of signals.
  • the signal adjustment circuit receives the myoelectric signal output by the lead circuit, the signal adjustment circuit 320 can buffer, amplify, filter, and level adjust the myoelectric signal, and convert the myoelectric signal into 0-3.3V. EMG voltage.
  • the signal adjustment circuit 320 further includes a voltage following circuit 321, a first amplification circuit 322, a filter circuit 323, a second amplification circuit 324, a level adjustment circuit 325, and a floating circuit 326, where:
  • the voltage follower circuit 321 is connected to the lead circuit 310 for buffering the myoelectric signal, and outputs the buffered myoelectric signal to the first amplifying circuit. Further, the voltage follower circuit 321 may include a positive input terminal for receiving the electromyogram signal obtained by the positive electrode tab, and a negative input terminal for receiving the positive electrode tab for acquiring The electromyogram signal, the voltage follower circuit is configured to buffer the electromyogram signal received by the positive input terminal and buffer the electromyographic signal received by the negative input terminal . As shown in FIG.
  • the voltage follower circuit may include a first resistor R1, a first diode D1, a second diode D3, a first operational amplifier U1, a second resistor R2, a third diode D2, and a fourth Diode D4, second operational amplifier U2, where:
  • One end of the first resistor R1 is connected to the positive input terminal IN+ of the voltage follower circuit, and the other end of the first resistor R1 is respectively opposite to the cathode of the first diode D1, the anode of the second diode D3, and the first operational amplifier U1.
  • the positive input terminal is connected, and the negative input terminal of the first operational amplifier U1 is respectively connected to the positive pole of the first diode D1, the negative pole of the second diode D3, and the output end of the first operational amplifier U1, and the first operational amplifier U1
  • the output end is connected to the positive output end of the voltage follower circuit; one end R2 of the second resistor is connected to the negative input terminal IN- of the voltage follower circuit, and the other end of the second resistor R2 is respectively connected to the negative pole and the fourth of the third diode D2
  • the anode of the diode D4 and the anode input terminal of the second operational amplifier U2 are connected, and the cathode input terminal of the second operational amplifier U2 is respectively connected to the anode of the third diode D2, the cathode of the fourth diode D4, and the second operation.
  • the output of the amplifier U2 is connected, and the output of the second operational amplifier U2 is connected to the negative output of the voltage follower circuit.
  • the first amplifying circuit 322 is connected to the voltage follower circuit 321 for performing a first-stage amplification process on the buffer-processed myoelectric signal, and outputting the myoelectric signal processed by the first-stage amplification to the The filter circuit. As shown in FIG.
  • the first amplifying circuit includes a third electric group R4, a fourth resistor R3, a third operational amplifier U3, a first capacitor C6 and a second capacitor C5, wherein: One end of the first capacitor C6 is connected to the positive input terminal of the first amplifying circuit, and the other end of the first capacitor C6 is respectively connected to one end of the third resistor R4 and the positive input terminal of the third operational amplifier U3, and one end of the second capacitor C5 Connected to the negative input terminal of the first amplifying circuit, the other end of the second capacitor C5 is respectively connected to one end of the fourth resistor R3 and the negative input terminal of the third operational amplifier U3, and the other end of the fourth resistor R3 is respectively connected with the third resistor The other end of R4 is connected to the voltage reference point of the first amplifying circuit, and the output terminal of the third operational amplifier U3 is connected to the output terminal of the first amplifying circuit.
  • the filter circuit 323 is connected to the first amplifying circuit 322, configured to perform filtering processing on the first-stage amplified processed myoelectric signal, and output the filtered processed myoelectric signal to the second amplifying circuit .
  • the filter circuit includes an eighth resistor R25, a ninth resistor R24, a tenth resistor R23, an eleventh resistor R30, a twelfth resistor R27, a thirteenth resistor R28, a fourteenth resistor R29, and a tenth.
  • the fifth resistor R26 and the filter chip, the filter chip comprises a first voltage input terminal VIN3, a second voltage input terminal VIN2, an auxiliary operational amplifier forward input terminal AUXIN+, an auxiliary operational amplifier inverting input terminal AUXIN-, a low-pass output terminal LPOUT, a belt
  • the first voltage input terminal VIN3 is connected to the input end of the filter circuit
  • the second voltage input terminal VIN2 is connected to one end of the eighth resistor R25
  • the other end of the eighth resistor R25 is respectively connected to the auxiliary operational amplifier forward input terminal AUXIN+ and the ground terminal GND.
  • the auxiliary input op amp reverse input terminal AUXIN- is respectively connected to one end of the ninth resistor R24, one end of the tenth resistor R23, and one end of the eleventh resistor R30, and the other end of the ninth resistor R24 is connected to the low-pass output terminal LPOUT.
  • the other end of the tenth resistor R23 is connected to one end of the high-pass output terminal HP0UT and the twelfth resistor R27, the other end of the twelfth resistor R27 is connected to one end of the thirteenth resistor R28, and the other end of the thirteenth resistor R28 is
  • the first frequency adjustment terminal FADJ1 is connected
  • the second frequency adjustment terminal FADJ2 is connected to one end of the fourteenth resistor R29
  • the other end of the fourteenth resistor R29 is connected to one end of the fifteenth resistor R26
  • the other end of the fifteenth resistor R26 Connected to the band-pass output terminal BP0UT
  • the auxiliary operational amplifier output terminal AUXOUT is respectively connected to the other end of the eleventh resistor R30 and the output end of the filter circuit.
  • the second amplifying circuit 324 is connected to the filtering circuit 323, configured to perform second-stage amplification processing on the filtered processed muscle telecommunications, and output the second-stage amplified processed myoelectric signal to the level Adjust the circuit.
  • the second amplifying circuit 324 includes a twenty-second resistor R15 and a twentieth a three resistor R16 and a seventh operational amplifier U7, wherein:
  • the positive input terminal of the seventh operational amplifier U7 is connected to the input end of the second amplifying circuit, and the negative input terminal of the seventh operational amplifier U7 is connected to one end of the twenty-second resistor R15 and one end of the twenty-third resistor R16, and second The other end of the twelve resistor R15 is grounded, the other end of the twenty-third resistor R16 is connected to the output terminal of the seventh operational amplifier U7, and the output terminal of the seventh operational amplifier U7 is connected to the output terminal of the second amplifying circuit.
  • the level adjusting circuit 325 is connected to the second amplifying circuit 324, configured to perform level adjustment processing on the second-stage amplified processed myoelectric signal, and output the electromyogram voltage obtained by the level adjusting process.
  • the level adjusting circuit includes a sixteenth resistor R17, a seventeenth resistor R20, an eighteenth resistor R19, a nineteenth resistor R18, a twentieth resistor R21, a twenty-first resistor R22, and a power supply.
  • a fifth diode D5 and a sixth operational amplifier U6 wherein: one end of the sixteenth resistor R17 is connected to the input end of the level adjusting circuit, and the other end of the sixteenth resistor R17 and one end of the seventeenth resistor R20, One end of the eighteenth resistor R19 is connected to the positive input terminal of the sixth operational amplifier U6, the other end of the seventeenth resistor R20 is connected to the power supply, the other end of the eighteenth resistor R19 is grounded, and the negative input of the sixth operational amplifier U6 is The end is connected to one end of the nineteenth resistor R18 and one end of the twentieth resistor R21, the other end of the nineteenth resistor R18 is grounded, the other end of the twentieth resistor R21 is connected to the output of the sixth operational amplifier U6, and the twentieth One end of a resistor R22 is connected, and the other end of the twenty-first resistor R22 is connected to the cathode of the fifth diode D5 and the output terminal of the level adjusting circuit.
  • the floating circuit 326 is connected to the lead circuit 310 and the first amplifying circuit 322, respectively, for providing a floating voltage according to the reference voltage of the voltage reference point of the first amplifying circuit 322. It should be noted that since the myoelectric signal is a very weak differential signal, if the lead circuit is directly grounded, the myoelectric signal will be interfered by the ground of other circuits, so the voltage reference of the floating circuit and the first amplifying circuit With the point connection, the pilot circuit 310 outputs a floating voltage, which can isolate the interference from the DC ground and improve the stability of the output myoelectric voltage. As shown in FIG. 6, the floating circuit includes a fourth operational amplifier U4, a fifth resistor R6, a fifth operational amplifier U5, a sixth resistor R7, a third capacitor C9, and a seventh resistor R10, wherein:
  • the positive input terminal of the fourth operational amplifier U4 is connected to the other end of the third resistor R4, and the negative input terminal of the fourth operational amplifier U4 is respectively connected to the output terminal of the fourth operational amplifier U4 and the fifth resistor.
  • One end of the R6 is connected, and the other end of the fifth resistor R6 is respectively connected to the negative input terminal of the fifth operational amplifier U5, one end of the sixth resistor R7, and one end of the third capacitor C9, and the output ends of the fifth operational amplifier U5 are respectively
  • the other end of the sixth resistor R7, the other end of the third capacitor C9, and one end of the seventh resistor R10 are connected, and the other end of the seventh resistor R10 is connected to the reference electrode sheet.
  • the signal sampling circuit 330 is connected to at least one signal adjusting circuit 320 for performing sample processing on the myoelectric voltage to obtain an electromyographic data signal.
  • the signal sampling circuit 330 may be a single chip, and the at least one signal adjusting circuit 320 is respectively connected to a plurality of sampling channels on the single chip.
  • the single-chip microcomputer can select each sampling channel according to the preset sampling frequency through the internal switching switch, and respectively cycle the myoelectric voltage outputted by each signal adjusting circuit to obtain at least one electromyographic data. signal.
  • the signal sampling circuit 330 When the mobile terminal 340 is connected to the signal sampling circuit 330, the signal sampling circuit 330 outputs the myoelectric data signal obtained by the sample processing to the mobile terminal 340, so that the mobile terminal 340 performs operation analysis processing on the myoelectric data signal. And the analysis results obtained by the operation analysis processing are displayed.
  • the mobile terminal 340 can also upload the EMG data signal or the analysis result to the network cloud storage platform for information sharing. Compared with the use of a computer, the use of a mobile terminal to perform an analysis and processing of the myoelectric data signal obtained by the electromyography collection device is advantageous for the user to conveniently carry and analyze the electromyographic signal.
  • the electromyogram signal of the surface of the body is first obtained by the electrode piece of the lead circuit, and the myoelectric signal is output to the signal adjustment circuit; and then the electromyogram obtained by the signal adjustment circuit is adjusted and processed.
  • the voltage is output to the signal sampling circuit, and finally the signal sampling circuit performs the sample processing on the myoelectric voltage to obtain the myoelectric data signal, thereby collecting the myoelectric data signal through the device, and collecting the myoelectric data signal.
  • an embodiment of the present invention further provides an EMG signal collection system, including an EMG signal collection device 1001 and a mobile terminal 1002, wherein:
  • the electromyography signal collecting device 1001 includes a signal sampling circuit, at least one set of lead circuits, and at least one signal adjusting circuit corresponding to the at least one set of lead circuits, the lead circuit including an electrode sheet, wherein: At least one set of lead circuits for acquiring an electromyogram signal of the surface of the body through the electrode sheet, and outputting the myoelectric signal to the signal adjustment circuit; the at least one signal adjustment circuit, and the at least one group of leads Connected circuit corresponding to the muscle obtained by adjusting the myoelectric signal The electrical voltage is output to the signal sampling circuit; the signal sampling circuit is connected to the at least one signal adjusting circuit for performing sample processing on the myoelectric voltage to obtain a myoelectric data signal.
  • the mobile terminal 1002 is configured to acquire a myoelectric data signal obtained by performing sampling processing on the myoelectric voltage by the signal sampling circuit, perform operation analysis and processing on the myoelectric data signal, and display an analysis obtained by operation analysis processing. result.
  • the program may be stored in a computer readable storage medium, and the storage medium may include: Flash disk, read-only memory (ROM), random access memory (RAM), disk or optical disk.

Abstract

一种肌电信号采集装置,包括:至少一组导联电路(110),用于通过电极片获取肌体表面的肌电信号,并将所述肌电信号输出到信号调整电路(120);至少一路所述信号调整电路(120),用于将所述肌电信号经调整处理后得到的肌电电压输出到信号采样电路(130);所述信号采样电路(130),用于对所述肌电电压进行采样处理得到肌电数据信号;当移动终端与所述装置连接时,所述信号采样电路(130)将采样处理得到的肌电数据信号输出到所述移动终端,以使所述移动终端对所述肌电数据信号进行运算分析处理并显示运算分析处理得到的分析结果。采用上述肌电信号采集装置,可以通过该装置采集表面肌电信号。

Description

一种肌电信号釆集装置 技术领域
本发明涉及电子技术领域, 尤其涉及一种肌电信号釆集装置。 背景技术
肌电信号是由肌肉兴奋时所募集的运动单位产生的一个个动作电位序列 在皮肤表面叠加而成,是一种非平稳的微弱信号。人体表面肌电信号可以反映 肌肉状态, 被用于体育运动医学、 临床医学及人机交互智能系统。 在体育运动 医学领域中, 可以通过肌电信号对肌肉力量、 肌肉疲劳程度作出评估, 帮助运 动员建立科学的训练方法,从而提高体育竟赛的成績, 另外通过对比正常的肌 电信号, 可以帮助运动员调整临场时的紧张、 焦虑与烦躁情绪。 在临床医学领 域中, 肌电信号可被用来诊断肌肉疾病, 如: 肌萎缩、 肌无力, 还可被用来评 估治疗后的康复评价。在人机交互智能系统领域中, 由于肌电信号的特征值可 以反映人体运动意图, 它可作为假肢手、 外骨 机器人的控制信息源, 也可用 于步态分析、 肌张力评估等等。 在人体运动过程中, 例如上下楼梯、 跑步、 弹 跳,获取表面肌电信号,全面反馈人体肌肉状态十分重要。在现有技术方案中, 主要通过表面肌电测量仪器来对肌电信号进行釆集,因此有必要提供一种其他 的釆集装置。 发明内容
本发明提供了一种肌电信号釆集装置, 可以通过该装置釆集表面肌电信 号。
本发明实施例第一方面提供了一种肌电信号釆集装置, 包括: 信号釆样电 路、至少一组导联电路以及与所述至少一组导联电路对应的至少一路信号调整 电路, 所述导联电路包括电极片, 其中:
所述至少一组导联电路,用于通过电极片获取肌体表面的肌电信号, 并将 所述肌电信号输出到所述信号调整电路;
所述至少一路信号调整电路, 与所述至少一组导联电路对应连接, 用于将 所述肌电信号经调整处理后得到的肌电电压输出到所述信号釆样电路; 所述信号釆样电路, 与所述至少一路信号调整电路连接, 用于对所述肌电 电压进行釆样处理得到肌电数据信号;
当移动终端与所述信号釆样电路连接时,所述信号釆样电路将釆样处理得 到的肌电数据信号输出到所述移动终端,以使所述移动终端对所述肌电数据信 号进行运算分析处理并显示运算分析处理得到的分析结果。
在第一方面的第一种可能的实现方式中, 所述装置包括接口转换电路, 所 述接口转换电路包括 UART接口和 USB接口, 所述 UART接口与所述信号釆 样电路连接, 所述 USB接口与所述移动终端连接, 所述接口转换电路用于根 据所述 UART接口接收到的所述信号釆样电路输出的所述肌电数据信号, 通 过所述 USB接口将所述肌电数据信号输出到所述移动终端
在第一方面的第二种可能的实现方式中,所述信号调整电路包括电压跟随 电路, 所述电压跟随电路用于对所述肌电信号进行緩冲处理。
结合第一方面的第二种可能的实现方式,在第一方面的第三种可能的实现 方式中, 所述导联电路包括一个正极电极片和一个负极电极片, 所述电压跟随 电路包括正极输入端和负极输入端,所述正极输入端用于接收所述正极电极片 获取到的所述肌电信号,所述负极输入端用于接收所述正极电极片获取到的所 述肌电信号,所述电压跟随电路用于分别对所述正极输入端接收到的所述肌电 信号进行緩冲处理和对所述负极输入端接收到的所述肌电信号进行緩冲处理。
结合第一方面的第二种以及第三种可能的实现方式,在第一方面的第四种 可能的实现方式中, 所述电压跟随电路包括第一电阻、 第一二极管、 第二二极 管、 第一运算放大器、 第二电阻、 第三二极管、 第四二极管、 第二运算放大器, 其中:
所述第一电阻的一端与所述电压跟随电路的所述正极输入端连接,所述第 一电阻的另一端分别与所述第一二极管的负极、所述第二二极管的正极以及所 述第一运算放大器的正极输入端连接,所述第一运算放大器的负极输入端分别 与所述第一二极管的正极、所述第二二极管的负极以及所述第一运算放大器的 输出端连接,所述第一运算放大器的输出端与所述电压跟随电路的正极输出端 连接; 所述第二电阻的一端与所述电压跟随电路的所述负极输入端连接,所述第 二电阻的另一端分别与所述第三二极管的负极、所述第四二极管的正极以及所 述第二运算放大器的正极输入端连接,所述第二运算放大器的负极输入端分别 与所述第三二极管的正极、所述第四二极管的负极以及所述第二运算放大器的 输出端连接,所述第二运算放大器的输出端与所述电压跟随电路的负极输出端 连接。
在第一方面的第五种可能的实现方式中,所述信号调整电路包括第一放大 电路, 所述第一放大电路用于对所述肌电信号进行第一级放大处理。
结合第一方面的第五种可能的实现方式,在第一方面的第六种可能的实现 方式中, 所述第一放大电路包括第三电组、 第四电阻、 第三运算放大器, 第一 电容以及第二电容, 其中:
所述第一电容的一端与所述第一放大电路的正极输入端连接,所述第一电 容的另一端分别与所述第三电阻的一端以及所述第三运算放大器的正极输入 端连接, 所述第二电容的一端与所述第一放大电路的负极输入端连接, 所述第 二电容的另一端分别与所述第四电阻的一端以及所述第三运算放大器的负极 输入端连接,所述第四电阻的另一端分别与所述第三电阻的另一端以及所述第 一放大电路的电压参考点连接,所述第三运算放大器的输出端与所述第一放大 电路的输出端连接。
结合第一方面的第五种以及第六种可能的实现方式,在第一方面的第七种 可能的实现方式中, 所述信号调整电路还包括浮地电路, 所述浮地电路分别与 所述导联电路以及所述第一放大电路连接,用于根据所述第一放大电路的电压 参考点的参考电压, 向所述导联电路提供浮地电压。
结合第一方面的第七种可能的实现方式,在第一方面的第八种可能的实现 方式中, 所述导联电路包括一个参考电极片, 所述浮地电路包括第四运算放大 器、 第五电阻、 第五运算放大器、 第六电阻、 第三电容、 第七电阻, 其中: 所述第四运算放大器的正极输入端与所述第三电阻的另一端连接,所述第 四运算放大器的负极输入端分别与所述第四运算放大器的输出端以及所述第 五电阻的一端连接,所述第五电阻的另一端分别与所述第五运算放大器的负极 输入端、所述第六电阻的一端以及所述第三电容的一端连接, 所述第五运算放 大器的输出端分别与所述第六电阻的另一端、所述第三电容的另一端以及所述 第七电阻的一端连接, 所述第七电阻的另一端与所述参考电极片连接。
在第一方面的第九种可能的实现方式中, 所述信号调整电路包括滤波电 路, 所述滤波电路用于对肌电信号进行滤波处理。
结合第一方面的第九种可能的实现方式,在第一方面的第十种可能的实现 方式中, 所述滤波电路包括第八电阻、 第九电阻、 第十电阻、 第十一电阻、 第 十二电阻、 第十三电阻、 第十四电阻、 第十五电阻以及滤波芯片, 所述滤波芯 片包括第一电压输入端、 第二电压输入端、 辅助运放正向输入端、 辅助运放反 向输入端、 低通输出端、 带通输出端、 高通输出端、 第一频率调节端、 第二频 率调节端、 辅助运放输出端以及接地端, 其中:
所述第一电压输入端与所述滤波电路的输入端连接,所述第二电压输入端 与所述第八电阻的一端连接,所述第八电阻的另一端分别与所述辅助运放正向 输入端以及所述接地端连接,所述辅助运放反向输入端分别与所述第九电阻的 一端、所述第十电阻的一端以及所述第十一电阻的一端连接, 所述第九电阻的 另一端与所述低通输出端连接,所述第十电阻的另一端与所述高通输出端以及 所述第十二电阻的一端连接,所述第十二电阻的另一端与所述第十三电阻的一 端连接, 所述第十三电阻的另一端与所述第一频率调节端连接, 所述第二频率 调节端与所述第十四电阻的一端连接,所述第十四电阻的另一端与所述第十五 电阻的一端连接, 所述第十五电阻的另一端与所述带通输出端连接, 所述辅助 运放输出端分别与所述第十一电阻的另一端以及所述滤波电路的输出端连接。
在第一方面的第十一种可能的实现方式中,所述信号调整电路包括电平调 整电路, 所述电平调整电路用于对肌电信号进行电平调整处理。
结合第一方面的第十一种可能的实现方式,在第一方面的第十二种可能的 实现方式中, 所述电平调整电路包括第十六电阻、 第十七电阻、 第十八电阻、 第十九电阻、 第二十电阻、 第二十一电阻、 供电电源、 第五二极管以及第六运 算放大器, 其中:
所述第十六电阻的一端与所述电平调整电路的输入端连接,所述第十六电 阻的另一端与所述第十七电阻的一端、所述第十八电阻的一端以及所述第六运 算放大器的正极输入端连接, 所述第十七电阻的另一端与所述供电电源连接, 所述第十八电阻的另一端接地,所述第六运算放大器的负极输入端与所述第十 九电阻的一端以及所述第二十电阻的一端连接, 所述第十九电阻的另一端接 地,所述第二十电阻的另一端与所述第六运算放大器的输出端以及所述第二十 一电阻的一端连接,所述第二十一电阻的另一端与所述第五二极管的负极以及 所述电平调整电路的输出端连接。
在第一方面的第十三种可能的实现方式中,所述信号调整电路包括电压跟 随电路、 第一放大电路、 滤波电路、 第二放大电路、 电平调整电路以及浮地电 路, 其中:
所述电压跟随电路, 与所述导联电路连接, 用于对所述肌电信号进行緩冲 处理, 并将经緩冲处理过的肌电信号输出到所述第一放大电路;
所述第一放大电路, 与所述电压跟随电路连接、用于对所述经緩冲处理过 的肌电信号进行第一级放大处理,并将经第一级放大处理过的肌电信号输出到 所述滤波电路;
所述滤波电路, 与所述第一放大电路连接, 用于对所述经第一级放大处理 过的肌电信号进行滤波处理,并将经滤波处理过的肌电信号输出到所述第二放 大电路;
所述第二放大电路, 与所述滤波电路连接, 用于对所述经滤波处理过的肌 电信进行第二级放大处理,并将经第二级放大处理过的肌电信号输出到所述电 平调整电路;
所述电平调整电路, 与所述第二放大电路连接,用于对所述经第二级放大 处理过的肌电信号进行电平调整处理,并将电平调整处理得到的所述肌电电压 输出到所述信号釆样电路;
所述浮地电路, 分别与所述导联电路以及所述第一放大电路连接, 用于根 据所述第一放大电路的电压参考点的参考电压, 向所述导联电路提供浮地电 压。
结合第一方面的第十三种可能的实现方式,在第一方面的第十四种可能的 实现方式中, 所述第二放大电路包括第二十二电阻、第二十三电阻以及第七运 算放大器, 其中:
所述第七运算放大器的正极输入端与所述第二放大电路的输入端连接,所 述第七运算放大器的负极输入端与所述第二十二电阻的一端以及所述第二十 三电阻的一端连接, 所述第二十二电阻的另一端接地, 所述第二十三电阻的另 一端与所述第七运算放大器的输出端连接,所述第七运算放大器的输出端与所 述第二放大电路的输出端连接。
结合第一方面以及第一方面的第十三种可能的实现方式,在第一方面的第 十五种可能的实现方式中, 所述装置包括供电电路, 所述供电电路分别与所述 信号调整电路以及所述信号釆样电路连接,用于对所述信号调整电路以及所述 信号釆样电路进行供电。
本发明实施例第二方面提供了一种肌电信号釆集系统,包括肌电信号釆集 装置和移动终端, 其中:
所述肌电信号釆集装置包括信号釆样电路、至少一组导联电路以及与所述 至少一组导联电路对应的至少一路信号调整电路, 所述导联电路包括电极片, 其中: 所述至少一组导联电路, 用于通过电极片获取肌体表面的肌电信号, 并 将所述肌电信号输出到所述信号调整电路; 所述至少一路信号调整电路, 与所 述至少一组导联电路对应连接,用于将所述肌电信号经调整处理后得到的肌电 电压输出到所述信号釆样电路; 所述信号釆样电路, 与所述至少一路信号调整 电路连接, 用于对所述肌电电压进行釆样处理得到肌电数据信号;
所述移动终端,用于获取所述信号釆样电路对所述肌电电压进行釆样处理 得到的肌电数据信号, 对所述肌电数据信号进行运算分析处理, 并显示运算分 析处理得到的分析结果。
在本发明实施例中, 首先通过导联电路的电极片获取肌体表面的肌电信 号, 并将肌电信号输出到信号调整电路; 然后信号调整电路将肌电信号经调整 处理后得到的肌电电压输出到信号釆样电路,最后信号釆样电路对肌电电压进 行釆样处理得到肌电数据信号,从而通过该装置釆集到肌电数据信号, 并且可 以将釆集到的肌电数据信号输出到与该装置建立连接的移动终端。 附图说明
为了更清楚地说明本发明实施例中的技术方案,下面将对实施例中所需要 使用的附图作简单地介绍,显而易见地, 下面描述中的附图仅仅是本发明的一 些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动性的前提下, 还可以根据这些附图获得其他的附图。
图 1是本发明第一实施例提出的一种肌电信号釆集装置的结构示意图; 图 2是本发明第二实施例提出的一种肌电信号釆集装置的结构示意图; 图 3是本发明第三实施例提出的一种肌电信号釆集装置的结构示意图; 图 4是本发明实施例提出的一种电压跟随电路的结构示意图;
图 5是本发明实施例提出的一种第一放大电路的结构示意图;
图 6是本发明实施例提出的一种浮地电路的结构示意图;
图 7是本发明实施例提出的一种滤波电路的结构示意图;
图 8是本发明实施例提出的一种电平调整电路的结构示意图;
图 9是本发明实施例提出的一种第二放大电路的结构示意图;
图 10是本发明实施例提出的一种肌电信号釆集系统的结构示意图。 具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清 楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而不是 全部的实施例。基于本发明中的实施例, 本领域普通技术人员在没有做出创造 性劳动前提下所获得的所有其他实施例, 都属于本发明保护的范围。
请参考图 1, 图 1是本发明第一实施例提出的一种肌电信号釆集装置。 如 图所示, 本发明实施例中的肌电信号釆集装置包括: 信号釆样电路 130、 至少 一组导联电路 110 以及与所述至少一组导联电路对应的至少一路信号调整电 路 120, 导联电路 130包括电极片, 其中:
至少一组导联电路 110, 用于通过电极片获取肌体表面的肌电信号, 并将 所述肌电信号输出到所述信号调整电路。
具体的, 至少一组导联电路 110可以包括 24根导联线和 24片电极片, 分 为 8组导联电路,每组导联电路包括 3根导联线和 3片电极片, 电极片可以为 Ag-AgCI电极片,每组导联电路的电极片包括一个正极电极片、一个负极电极 片以及一个参考电极片。 当需要获取机体表面的肌电信号时, 可以将电极片分 别贴放在机体表面的不同位置处, 从而获取机体表面不同位置处的肌电信号。 需要说明的是, 本发明实施例中的装置不局限于包括 8组导联电路,还可以包 括其他任何组数的导联电路。
至少一路信号调整电路 120, 与至少一组导联电路 110对应连接, 用于将 所述肌电信号经调整处理后得到的肌电电压输出到所述信号釆样电路。
具体的, 与上述至少一组导联电路 110的组数一样, 该装置也可以包括 8 路信号调整电路,每路信号调整电路分别与一组导联电路对应连接。 需要说明 的是, 本发明实施例中的装置不局限于包括 8路信号调整电路,还可以包括其 他任何数量的信号调整电路。当信号调整电路接收到导联电路输出的肌电信号 时,信号调整电路可以对该肌电信号进行緩冲、放大、滤波或者电平调整处理, 将肌电信号转化为 0~3.3V的肌电电压。
可选的,信号调整电路 120可以包括电压跟随电路, 该电压跟随电路用于 对所述肌电信号进行緩冲处理, 提高输入阻抗。 进一步的, 电压跟随电路可以 包括正极输入端和负极输入端,正极输入端用于接收所述正极电极片获取到的 所述肌电信号, 负极输入端用于接收所述正极电极片获取到的所述肌电信号, 电压跟随电路用于分别对所述正极输入端接收到的所述肌电信号进行緩冲处 理和对所述负极输入端接收到的所述肌电信号进行緩冲处理。如图 4所示, 电 压跟随电路可以包括第一电阻 Rl、 第一二极管 Dl、 第二二极管 D3、 第一运 算放大器 Ul、 第二电阻 R2、 第三二极管 D2、 第四二极管 D4、 第二运算放大 器 U2, 其中:
第一电阻 R1的一端与电压跟随电路的正极输入端 IN+连接,第一电阻 R1 的另一端分别与第一二极管 D1的负极、 第二二极管 D3的正极以及第一运算 放大器 U1的正极输入端连接, 第一运算放大器 U1的负极输入端分别与第一 二极管 D1的正极、 第二二极管 D3的负极以及第一运算放大器 U1的输出端 连接, 第一运算放大器 U1的输出端与电压跟随电路的正极输出端连接; 第二 电阻的一端 R2与电压跟随电路的负极输入端 IN-连接,第二电阻 R2的另一端 分别与第三二极管 D2的负极、第四二极管 D4的正极以及第二运算放大器 U2 的正极输入端连接, 第二运算放大器 U2的负极输入端分别与第三二极管 D2 的正极、 第四二极管 D4的负极以及第二运算放大器 U2的输出端连接, 第二 运算放大器 U2的输出端与电压跟随电路的负极输出端连接。 可选的,信号调整电路 120可以包括第一放大电路, 第一放大电路用于对 所述肌电信号进行第一级放大处理。如图 5所示, 第一放大电路包括第三电组 R4、 第四电阻 R3、 第三运算放大器 U3, 第一电容 C6以及第二电容 C5, 其 中:
第一电容 C6的一端与第一放大电路的正极输入端连接, 第一电容 C6的 另一端分别与第三电阻 R4的一端以及第三运算放大器 U3的正极输入端连接, 第二电容 C5的一端与第一放大电路的负极输入端连接, 第二电容 C5的另一 端分别与第四电阻 R3的一端以及第三运算放大器 U3的负极输入端连接, 第 四电阻 R3的另一端分别与第三电阻 R4的另一端以及第一放大电路的电压参 考点的连接, 第三运算放大器 U3的输出端与第一放大电路的输出端连接。
可选的,信号调整电路 120还可以包括浮地电路,浮地电路分别与导联电 路 110以及第一放大电路连接,用于根据第一放大电路的电压参考点的参考电 压, 向导联电路 110提供浮地电压。 需要说明的是, 由于肌电信号是一个很微 弱的差分信号,如果将导联电路直接接地,肌电信号将受到其他电路接地端的 干扰, 因此, 将浮地电路与第一放大电路的电压参考点连接, 向导联电路 110 输出浮地电压, 可以隔离来自直流接地的干扰, 提高输出肌电电压的稳定性。 如图 6所示, 浮地电路包括第四运算放大器 U4、 第五电阻 R6、 第五运算放大 器 U5、 第六电阻 R7、 第三电容 C9、 第七电阻 R10, 其中:
第四运算放大器 U4的正极输入端与第三电阻 R4的另一端连接, 第四运 算放大器 U4的负极输入端分别与第四运算放大器 U4的输出端以及第五电阻 R6的一端连接, 第五电阻 R6的另一端分别与第五运算放大器 U5的负极输入 端、 第六电阻 R7的一端以及第三电容 C9的一端连接, 第五运算放大器 U5 的输出端分别与第六电阻 R7的另一端、 第三电容 C9的另一端以及第七电阻 R10的一端连接, 第七电阻 R10的另一端与参考电极片连接。
可选的,信号调整电路 120可以包括滤波电路, 滤波电路用于对肌电信号 进行滤波处理。 如图 7所示, 滤波电路包括第八电阻 R25、 第九电阻 R24、 第 十电阻 R23、 第十一电阻 R30、 第十二电阻 R27、 第十三电阻 R28、 第十四电 阻 R29、第十五电阻 R26以及滤波芯片,滤波芯片包括第一电压输入端 VIN3、 第二电压输入端 VIN2、 辅助运放正向输入端 AUXIN+、 辅助运放反向输入端 AUXIN -、 低通输出端 LPOUT、 带通输出端 BPOUT、 高通输出端 HPOUT、 第一频率调节端 FADJ1、 第二频率调节端 FADJ2、 辅助运放输出端 AUXOUT 以及接地端 GND, 其中:
第一电压输入端 VIN3与滤波电路的输入端连接, 第二电压输入端 VIN2 与第八电阻 R25的一端连接, 第八电阻 R25的另一端分别与辅助运放正向输 入端 AUXIN+以及接地端 GND连接, 辅助运放反向输入端 AUXIN-分别与第 九电阻 R24的一端、 第十电阻 R23的一端以及第十一电阻 R30的一端连接, 第九电阻 R24的另一端与低通输出端 LP0UT连接,第十电阻 R23的另一端与 高通输出端 HP0UT以及第十二电阻 R27的一端连接, 第十二电阻 R27的另 一端与第十三电阻 R28的一端连接, 第十三电阻 R28的另一端与第一频率调 节端 FADJ1连接, 第二频率调节端 FADJ2与第十四电阻 R29的一端连接, 第 十四电阻 R29的另一端与第十五电阻 R26的一端连接, 第十五电阻 R26的另 一端与带通输出端 BP0UT连接, 辅助运放输出端 AUXOUT分别与第十一电 阻 R30的另一端以及滤波电路的输出端连接。
可选的,信号调整电路 120可以包括电平调整电路, 电平调整电路用于对 肌电信号进行电平调整处理。如图 8所示,电平调整电路包括第十六电阻 R17、 第十七电阻 R20、 第十八电阻 R19、 第十九电阻 R18、 第二十电阻 R21、 第二 十一电阻 R22、 供电电源、 第五二极管 D5以及第六运算放大器 U6, 其中: 第十六电阻 R17 的一端与电平调整电路的输入端连接, 第十六电阻 R17 的另一端与第十七电阻 R20的一端、 第十八电阻 R19的一端以及第六运算放 大器 U6的正极输入端连接, 第十七电阻 R20的另一端与供电电源连接, 第十 八电阻 R19的另一端接地, 第六运算放大器 U6的负极输入端与第十九电阻 R18的一端以及第二十电阻 R21的一端连接, 第十九电阻 R18的另一端接地, 第二十电阻 R21 的另一端与第六运算放大器 U6的输出端以及第二十一电阻 R22的一端连接, 第二十一电阻 R22的另一端与第五二极管 D5的负极以及电 平调整电路的输出端连接。
信号釆样电路 130, 与至少一路信号调整电路 120连接, 用于对所述肌电 电压进行釆样处理得到肌电数据信号。
具体的, 信号釆样电路 130 可以为单片机, 上述至少一路信号调整电路 120分别与单片机上的多个釆样通道连接。 单片机可以根据预先设定的釆样频 率,通过内部的切换开关分时选定每个釆样通道, 分别对各路信号调整电路输 出的肌电电压进行循环釆样, 从而得到至少一路肌电数据信号。
当移动终端与装置建立连接时,信号釆样电路 130将釆样处理得到的肌电 数据信号输出到移动终端,以使移动终端对所述肌电数据信号进行运算分析处 理并显示运算分析处理得到的分析结果。此外,移动终端还可以将肌电数据信 号或者分析结果上传到网络云存储平台从而实现信息共享。 与使用计算机相 比,使用移动终端运算分析处理肌电釆集装置釆集得到的肌电数据信号,有利 于用户方便携带进而处理分析肌电信号更加便捷。
在本发明实施例中, 首先通过导联电路的电极片获取肌体表面的肌电信 号, 并将肌电信号输出到信号调整电路; 然后信号调整电路将肌电信号经调整 处理后得到的肌电电压输出到信号釆样电路,最后信号釆样电路对肌电电压进 行釆样处理得到肌电数据信号,从而通过该装置釆集到肌电数据信号, 并且可 以将釆集到的肌电数据信号输出到与该装置建立连接的移动终端。 请参考图 2, 图 2是本发明第二实施例提出的一种肌电信号釆集装置的结 构示意图。如图所示, 本发明实施例中的肌电信号釆集装置包括至少一组导联 电路 210、 至少一路信号调整电路 220、 信号釆样电路 230、接口转换电路 240 以及供电电路 260, 该装置可以与移动终端 250连接, 其中:
至少一组导联电路 210, 用于通过电极片获取肌体表面的肌电信号, 并将 所述肌电信号输出到所述信号调整电路。
具体的, 至少一组导联电路 210可以包括 24根导联线和 24片电极片, 分 为 8组导联电路,每组导联电路包括 3根导联线和 3片电极片, 电极片可以为 Ag-AgCI电极片,每组导联电路的电极片包括一个正极电极片、一个负极电极 片以及一个参考电极片。 当需要获取机体表面的肌电信号时, 可以将电极片分 别贴放在机体表面的不同位置处, 从而获取机体表面不同位置处的肌电信号。 需要说明的是, 本发明实施例中的装置不局限于包括 8组导联电路,还可以包 括其他任何组数的导联电路。
至少一路信号调整电路 220, 与导联电路 210连接, 用于将所述肌电信号 经调整处理后得到的肌电电压输出到所述信号釆样电路。
具体的, 与上述至少一组导联电路 210的组数一样,肌电信号釆集装置也 可以包括 8 路信号调整电路, 每路信号调整电路分别与一组导联电路对应连 接。 需要说明的是, 本发明实施例中的装置不局限于包括 8路信号调整电路, 还可以包括其他任何数量的信号调整电路。当信号调整电路接收到导联电路输 出的肌电信号时, 信号调整电路可以对该肌电信号进行緩冲、放大、 滤波或者 电平调整处理, 将肌电信号转化为 0~3.3V的肌电电压。
信号釆样电路 230, 与信号调整电路 220连接, 用于对所述肌电电压进行 釆样处理得到肌电数据信号。
具体的, 信号釆样电路 230 可以为单片机, 上述至少一路信号调整电路 220分别与单片机上的多个釆样通道连接。 单片机可以根据预先设定的釆样频 率,通过内部的切换开关分时选定每个釆样通道, 分别对各路信号调整电路输 出的肌电电压进行循环釆样, 从而得到至少一路肌电数据信号。
接口转换电路 240, 包括 UART ( Universal Asynchronous Receiver /Transmitter, 通用异步接收 /发送 )接口和 USB ( Universal Serial Bus, 通用串 行总线)接口, UART接口与信号釆样电路 230连接, USB接口与移动终端 250连接,接口转换电路 240用于根据所述 UART接口接收到的所述信号釆样 电路 230输出的肌电数据信号, 通过所述 USB接口将肌电数据信号输出到移 动终端 250。 需要说明的是, 当信号釆样电路 230是通过 UART接口输出肌电 数据信号, 而移动终端 250是通过 USB接收肌电数据信号时, 本发明实施例 中的装置可以包括接口转换电路 240。
当移动终端 250通过接口转换电路 240与信号釆样电路 230连接时,信号 釆样电路 230将釆样处理得到的肌电数据信号输出到移动终端 250, 以使移动 终端 250对肌电数据信号进行运算分析处理并显示运算分析处理得到的分析 结果。移动终端 250还可以将肌电数据信号或者分析结果上传到网络云存储平 台从而实现信息共享。 与使用计算机相比,使用移动终端 250运算分析处理肌 电釆集装置釆集得到的肌电数据信号,有利于用户方便携带进而处理分析肌电 信号更加便捷。
供电电路 260, 分别与信号调整电路 220、 信号釆样电路 230以及移动终 端 250连接, 用于对信号调整电路 220、 信号釆样电路 230以及移动终端 250 进行供电。
在本发明实施例中, 首先通过导联电路的电极片获取肌体表面的肌电信 号, 并将肌电信号输出到信号调整电路; 然后信号调整电路将肌电信号经调整 处理后得到的肌电电压输出到信号釆样电路,最后信号釆样电路对肌电电压进 行釆样处理得到肌电数据信号,从而通过该装置釆集到肌电数据信号, 并且可 以将釆集到的肌电数据信号输出到与该装置建立连接的移动终端。 请参考图 3, 图 3是本发明第三实施例提出的一种肌电信号釆集装置的结 构示意图。 该装置不仅限于图 3所示的包括一组导联电路 310、 一路信号调整 电路 320以及信号釆样电路 330, 还可以包括多组导联电路以及多路信号调整 电路, 并且信号釆样电路 330可以包括多路釆集通道。 其中, 每组导联电路的 三个电极片分别与信号调整电路的正极输入端、负极输入端以及电压参考点连 接,每路信号调整电路分别与信号釆样电路 330的一个釆样通道连接,从而可 以釆集到多路肌电信号。 本发明实施例中的肌电信号釆集装置包括:
至少一组导联电路 310, 用于通过电极片获取肌体表面的肌电信号, 并将 所述肌电信号输出到所述信号调整电路。
具体的, 至少一组导联电路 310可以包括 24根导联线和 24片电极片, 分 为 8组导联电路,每组导联电路包括 3根导联线和 3片电极片, 电极片可以为 Ag-AgCI电极片,每组导联电路的电极片包括一个正极电极片、一个负极电极 片以及一个参考电极片。 当需要获取机体表面的肌电信号时, 可以将电极片分 别贴放在机体表面的不同位置处, 从而获取机体表面不同位置处的肌电信号。 需要说明的是, 本发明实施例中的装置不局限于包括 8组导联电路,还可以包 括其他任何组数的导联电路。
至少一路信号调整电路 320, 与至少一组导联电路 310连接, 用于将肌电 信号经调整处理后得到的肌电电压输出到所述信号釆样电路。
具体的, 与上述至少一组导联电路 310的组数一样, 该装置也可以包括 8 路信号调整电路,每路信号调整电路分别与一组导联电路对应连接。 需要说明 的是, 本发明实施例中的装置不局限于包括 8路信号调整电路,还可以包括其 他任何数量的信号调整电路。当信号调整电路接收到导联电路输出的肌电信号 时, 信号调整电路 320可以对该肌电信号进行緩冲、放大、 滤波以及电平调整 处理, 将肌电信号转化为 0~3.3V的肌电电压。
可选的, 信号调整电路 320还可以进一步包括电压跟随电路 321、 第一放 大电路 322、 滤波电路 323、 第二放大电路 324、 电平调整电路 325以及浮地 电路 326, 其中:
电压跟随电路 321,与导联电路 310连接,用于对肌电信号进行緩冲处理, 并将经緩冲处理过的肌电信号输出到所述第一放大电路。进一步的, 电压跟随 电路 321可以包括正极输入端和负极输入端,正极输入端用于接收所述正极电 极片获取到的所述肌电信号,负极输入端用于接收所述正极电极片获取到的所 述肌电信号,电压跟随电路用于分别对所述正极输入端接收到的所述肌电信号 进行緩冲处理和对所述负极输入端接收到的所述肌电信号进行緩冲处理。如图 4所示,电压跟随电路可以包括第一电阻 Rl、第一二极管 Dl、第二二极管 D3、 第一运算放大器 Ul、 第二电阻 R2、 第三二极管 D2、 第四二极管 D4、 第二运 算放大器 U2, 其中:
第一电阻 R1的一端与电压跟随电路的正极输入端 IN+连接,第一电阻 R1 的另一端分别与第一二极管 D1的负极、 第二二极管 D3的正极以及第一运算 放大器 U1的正极输入端连接, 第一运算放大器 U1的负极输入端分别与第一 二极管 D1的正极、 第二二极管 D3的负极以及第一运算放大器 U1的输出端 连接, 第一运算放大器 U1的输出端与电压跟随电路的正极输出端连接; 第二 电阻的一端 R2与电压跟随电路的负极输入端 IN-连接,第二电阻 R2的另一端 分别与第三二极管 D2的负极、第四二极管 D4的正极以及第二运算放大器 U2 的正极输入端连接, 第二运算放大器 U2的负极输入端分别与第三二极管 D2 的正极、 第四二极管 D4的负极以及第二运算放大器 U2的输出端连接, 第二 运算放大器 U2的输出端与电压跟随电路的负极输出端连接。
第一放大电路 322, 与电压跟随电路 321连接、 用于对所述经緩冲处理过 的肌电信号进行第一级放大处理,并将经第一级放大处理过的肌电信号输出到 所述滤波电路。 如图 5所示, 第一放大电路包括第三电组 R4、 第四电阻 R3、 第三运算放大器 U3, 第一电容 C6以及第二电容 C5, 其中: 第一电容 C6的一端与第一放大电路的正极输入端连接, 第一电容 C6的 另一端分别与第三电阻 R4的一端以及第三运算放大器 U3的正极输入端连接, 第二电容 C5的一端与第一放大电路的负极输入端连接, 第二电容 C5的另一 端分别与第四电阻 R3的一端以及第三运算放大器 U3的负极输入端连接, 第 四电阻 R3的另一端分别与第三电阻 R4的另一端以及所述第一放大电路的电 压参考点连接, 第三运算放大器 U3的输出端与第一放大电路的输出端连接。
滤波电路 323, 与第一放大电路 322连接, 用于对所述经第一级放大处理 过的肌电信号进行滤波处理,并将经滤波处理过的肌电信号输出到所述第二放 大电路。 如图 7所示, 滤波电路包括第八电阻 R25、 第九电阻 R24、 第十电阻 R23、 第十一电阻 R30、 第十二电阻 R27、 第十三电阻 R28、 第十四电阻 R29、 第十五电阻 R26以及滤波芯片, 滤波芯片包括第一电压输入端 VIN3、 第二电 压输入端 VIN2、辅助运放正向输入端 AUXIN+、辅助运放反向输入端 AUXIN -、 低通输出端 LPOUT、 带通输出端 BPOUT、 高通输出端 HPOUT、 第一频率调 节端 FADJ1、 第二频率调节端 FAD J2、 辅助运放输出端 AUXOUT以及接地端 GND, 其中:
第一电压输入端 VIN3与滤波电路的输入端连接, 第二电压输入端 VIN2 与第八电阻 R25的一端连接, 第八电阻 R25的另一端分别与辅助运放正向输 入端 AUXIN+以及接地端 GND连接, 辅助运放反向输入端 AUXIN-分别与第 九电阻 R24的一端、 第十电阻 R23的一端以及第十一电阻 R30的一端连接, 第九电阻 R24的另一端与低通输出端 LP0UT连接,第十电阻 R23的另一端与 高通输出端 HP0UT以及第十二电阻 R27的一端连接, 第十二电阻 R27的另 一端与第十三电阻 R28的一端连接, 第十三电阻 R28的另一端与第一频率调 节端 FADJ1连接, 第二频率调节端 FADJ2与第十四电阻 R29的一端连接, 第 十四电阻 R29的另一端与第十五电阻 R26的一端连接, 第十五电阻 R26的另 一端与带通输出端 BP0UT连接, 辅助运放输出端 AUXOUT分别与第十一电 阻 R30的另一端以及滤波电路的输出端连接。
第二放大电路 324, 与滤波电路 323连接, 用于对所述经滤波处理过的肌 电信进行第二级放大处理,并将经第二级放大处理过的肌电信号输出到所述电 平调整电路。 如图 9所示, 第二放大电路 324包括第二十二电阻 R15、 第二十 三电阻 R16以及第七运算放大器 U7, 其中:
第七运算放大器 U7的正极输入端与第二放大电路的输入端连接, 第七运 算放大器 U7的负极输入端与第二十二电阻 R15的一端以及第二十三电阻 R16 的一端连接, 第二十二电阻 R15的另一端接地, 第二十三电阻 R16的另一端 与第七运算放大器 U7的输出端连接, 第七运算放大器 U7的输出端与第二放 大电路的输出端连接。
电平调整电路 325, 与所述第二放大电路 324连接, 用于对所述经第二级 放大处理过的肌电信号进行电平调整处理,并将电平调整处理得到的肌电电压 输出到所述信号釆样电路。 如图 8所示, 电平调整电路包括第十六电阻 R17、 第十七电阻 R20、 第十八电阻 R19、 第十九电阻 R18、 第二十电阻 R21、 第二 十一电阻 R22、 供电电源、 第五二极管 D5以及第六运算放大器 U6, 其中: 第十六电阻 R17 的一端与电平调整电路的输入端连接, 第十六电阻 R17 的另一端与第十七电阻 R20的一端、 第十八电阻 R19的一端以及第六运算放 大器 U6的正极输入端连接, 第十七电阻 R20的另一端与供电电源连接, 第十 八电阻 R19的另一端接地, 第六运算放大器 U6的负极输入端与第十九电阻 R18的一端以及第二十电阻 R21的一端连接, 第十九电阻 R18的另一端接地, 第二十电阻 R21 的另一端与第六运算放大器 U6的输出端以及第二十一电阻 R22的一端连接, 第二十一电阻 R22的另一端与第五二极管 D5的负极以及电 平调整电路的输出端连接。
浮地电路 326, 分别与导联电路 310以及第一放大电路 322连接, 用于根 据第一放大电路 322的电压参考点的参考电压,向导联电路 310提供浮地电压。 需要说明的是, 由于肌电信号是一个很微弱的差分信号,如果将导联电路直接 接地, 肌电信号将受到其他电路接地端的干扰, 因此, 将浮地电路与第一放大 电路的电压参考点连接, 向导联电路 310输出浮地电压, 可以隔离来自直流接 地的干扰, 提高输出肌电电压的稳定性。 如图 6所示, 浮地电路包括第四运算 放大器 U4、 第五电阻 R6、 第五运算放大器 U5、 第六电阻 R7、 第三电容 C9、 第七电阻 R10, 其中:
第四运算放大器 U4的正极输入端与第三电阻 R4的另一端连接, 第四运 算放大器 U4的负极输入端分别与第四运算放大器 U4的输出端以及第五电阻 R6的一端连接, 第五电阻 R6的另一端分别与第五运算放大器 U5的负极输入 端、 第六电阻 R7的一端以及第三电容 C9的一端连接, 第五运算放大器 U5 的输出端分别与第六电阻 R7的另一端、 第三电容 C9的另一端以及第七电阻 R10的一端连接, 第七电阻 R10的另一端与参考电极片连接。
信号釆样电路 330, 与至少一路信号调整电路 320连接, 用于对所述肌电 电压进行釆样处理得到肌电数据信号。
具体的, 信号釆样电路 330 可以为单片机, 上述至少一路信号调整电路 320分别与单片机上的多个釆样通道连接。 单片机可以根据预先设定的釆样频 率,通过内部的切换开关分时选定每个釆样通道, 分别对各路信号调整电路输 出的肌电电压进行循环釆样, 从而得到至少一路肌电数据信号。
当移动终端 340与信号釆样电路 330连接时,信号釆样电路 330将釆样处 理得到的肌电数据信号输出到所述移动终端 340, 以使移动终端 340对肌电数 据信号进行运算分析处理并显示运算分析处理得到的分析结果。 移动终端 340 还可以将肌电数据信号或者分析结果上传到网络云存储平台从而实现信息共 享。 与使用计算机相比,使用移动终端运算分析处理肌电釆集装置釆集得到的 肌电数据信号, 有利于用户方便携带进而处理分析肌电信号更加便捷。
在本发明实施例中, 首先通过导联电路的电极片获取肌体表面的肌电信 号, 并将肌电信号输出到信号调整电路; 然后信号调整电路将肌电信号经调整 处理后得到的肌电电压输出到信号釆样电路,最后信号釆样电路对肌电电压进 行釆样处理得到肌电数据信号,从而通过该装置釆集到肌电数据信号, 并且可 以将釆集到的肌电数据信号输出到与该装置建立连接的移动终端。 如图 10所示, 本发明实施例还提供了一种肌电信号釆集系统, 包括肌电 信号釆集装置 1001和移动终端 1002, 其中:
肌电信号釆集装置 1001包括信号釆样电路、 至少一组导联电路以及与所 述至少一组导联电路对应的至少一路信号调整电路, 所述导联电路包括电极 片,其中:所述至少一组导联电路,用于通过电极片获取肌体表面的肌电信号, 并将所述肌电信号输出到所述信号调整电路; 所述至少一路信号调整电路, 与 所述至少一组导联电路对应连接,用于将所述肌电信号经调整处理后得到的肌 电电压输出到所述信号釆样电路; 所述信号釆样电路, 与所述至少一路信号调 整电路连接, 用于对所述肌电电压进行釆样处理得到肌电数据信号。
移动终端 1002, 用于获取所述信号釆样电路对所述肌电电压进行釆样处 理得到的肌电数据信号,对所述肌电数据信号进行运算分析处理, 并显示运算 分析处理得到的分析结果。
需要说明的是, 对于前述的各个方法实施例, 为了简单描述, 故将其都表 述为一系列的动作组合,但是本领域技术人员应该知悉, 本发明并不受所描述 的动作顺序的限制, 因为依据本发明, 某一些步骤可以釆用其他顺序或者同时 进行。 其次, 本领域技术人员也应该知悉, 说明书中所描述的实施例均属于优 选实施例, 所涉及的动作和模块并不一定是本发明所必须的。
在上述实施例中,对各个实施例的描述都各有侧重, 某个实施例中没有详 细描述的部分, 可以参见其他实施例的相关描述。
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步 骤是可以通过程序来指令相关的硬件来完成,该程序可以存储于一计算机可读 存储介质中, 存储介质可以包括: 闪存盘、 只读存储器(Read-Only Memory , ROM ), 随机存取器 ( Random Access Memory, RAM ), 磁盘或光盘等。
以上对本发明实施例所提供的内容下载方法及相关设备、系统进行了详细 施例的说明只是用于帮助理解本发明的方法及其核心思想; 同时,对于本领域 的一般技术人员,依据本发明的思想,在具体实施方式及应用范围上均会有改 变之处, 综上所述, 本说明书内容不应理解为对本发明的限制。

Claims

权 利 要 求
1、 一种肌电信号釆集装置, 其特征在于, 所述装置包括信号釆样电路、 至少一组导联电路以及与所述至少一组导联电路对应的至少一路信号调整电 路, 所述导联电路包括电极片, 其中:
所述至少一组导联电路,用于通过电极片获取肌体表面的肌电信号, 并将 所述肌电信号输出到所述信号调整电路;
所述至少一路信号调整电路, 与所述至少一组导联电路对应连接, 用于将 所述肌电信号经调整处理后得到的肌电电压输出到所述信号釆样电路;
所述信号釆样电路, 与所述至少一路信号调整电路连接, 用于对所述肌电 电压进行釆样处理得到肌电数据信号;
当移动终端与所述信号釆样电路连接时,所述信号釆样电路将釆样处理得 到的肌电数据信号输出到所述移动终端,以使所述移动终端对所述肌电数据信 号进行运算分析处理并显示运算分析处理得到的分析结果。
2、 如权利要求 1所述的装置, 其特征在于, 所述装置包括接口转换电路, 所述接口转换电路包括 UART接口和 USB接口, 所述 UART接口与所述信号 釆样电路连接, 所述 USB接口与所述移动终端连接, 所述接口转换电路用于 根据所述 UART接口接收到的所述信号釆样电路输出的所述肌电数据信号, 通过所述 USB接口将所述肌电数据信号输出到所述移动终端。
3、 如权利要求 1所述的装置, 其特征在于, 所述信号调整电路包括电压 跟随电路, 所述电压跟随电路用于对所述肌电信号进行緩冲处理。
4、 如权利要求 3所述装置, 其特征在于, 所述导联电路包括一个正极电 极片和一个负极电极片, 所述电压跟随电路包括正极输入端和负极输入端, 所 述正极输入端用于接收所述正极电极片获取到的所述肌电信号,所述负极输入 端用于接收所述正极电极片获取到的所述肌电信号,所述电压跟随电路用于分 别对所述正极输入端接收到的所述肌电信号进行緩冲处理和对所述负极输入 端接收到的所述肌电信号进行緩冲处理。
5、 如权利要求 3或 4所述的装置, 其特征在于, 所述电压跟随电路包括 第一电阻、 第一二极管、 第二二极管、 第一运算放大器、 第二电阻、 第三二极 管、 第四二极管、 第二运算放大器, 其中:
所述第一电阻的一端与所述电压跟随电路的所述正极输入端连接,所述第 一电阻的另一端分别与所述第一二极管的负极、所述第二二极管的正极以及所 述第一运算放大器的正极输入端连接,所述第一运算放大器的负极输入端分别 与所述第一二极管的正极、所述第二二极管的负极以及所述第一运算放大器的 输出端连接,所述第一运算放大器的输出端与所述电压跟随电路的正极输出端 连接;
所述第二电阻的一端与所述电压跟随电路的所述负极输入端连接,所述第 二电阻的另一端分别与所述第三二极管的负极、所述第四二极管的正极以及所 述第二运算放大器的正极输入端连接,所述第二运算放大器的负极输入端分别 与所述第三二极管的正极、所述第四二极管的负极以及所述第二运算放大器的 输出端连接,所述第二运算放大器的输出端与所述电压跟随电路的负极输出端 连接。
6、 如权利要求 5所述的装置, 其特征在于, 所述信号调整电路包括第一 放大电路, 所述第一放大电路用于对所述肌电信号进行第一级放大处理。
7、 如权利要求 6所述的装置, 其特征在于, 所述第一放大电路包括第三 电组、 第四电阻、 第三运算放大器, 第一电容以及第二电容, 其中:
所述第一电容的一端与所述第一放大电路的正极输入端连接,所述第一电 容的另一端分别与所述第三电阻的一端以及所述第三运算放大器的正极输入 端连接, 所述第二电容的一端与所述第一放大电路的负极输入端连接, 所述第 二电容的另一端分别与所述第四电阻的一端以及所述第三运算放大器的负极 输入端连接,所述第四电阻的另一端分别与所述第三电阻的另一端以及所述第 一放大电路的电压参考点连接,所述第三运算放大器的输出端与所述第一放大 电路的输出端连接。
8、 如权利要求 6或 7所述的装置, 其特征在于, 所述信号调整电路还包 括浮地电路, 所述浮地电路分别与所述导联电路以及所述第一放大电路连接, 用于根据所述第一放大电路的电压参考点的参考电压,向所述导联电路提供浮 地电压。
9、 如权利要求 8所述的装置, 其特征在于, 所述导联电路包括一个参考 电极片, 所述浮地电路包括第四运算放大器、 第五电阻、 第五运算放大器、 第 六电阻、 第三电容、 第七电阻, 其中:
所述第四运算放大器的正极输入端与所述第三电阻的另一端连接,所述第 四运算放大器的负极输入端分别与所述第四运算放大器的输出端以及所述第 五电阻的一端连接,所述第五电阻的另一端分别与所述第五运算放大器的负极 输入端、所述第六电阻的一端以及所述第三电容的一端连接, 所述第五运算放 大器的输出端分别与所述第六电阻的另一端、所述第三电容的另一端以及所述 第七电阻的一端连接, 所述第七电阻的另一端与所述参考电极片连接。
10、 如权利要求 1所述的装置, 其特征在于, 所述信号调整电路包括滤波 电路, 所述滤波电路用于对肌电信号进行滤波处理。
11、 如权利要求 10所述的装置, 其特征在于, 所述滤波电路包括第八电 阻、 第九电阻、 第十电阻、 第十一电阻、 第十二电阻、 第十三电阻、 第十四电 阻、 第十五电阻以及滤波芯片, 所述滤波芯片包括第一电压输入端、 第二电压 输入端、 辅助运放正向输入端、 辅助运放反向输入端、 低通输出端、 带通输出 端、 高通输出端、 第一频率调节端、 第二频率调节端、 辅助运放输出端以及接 地端, 其中:
所述第一电压输入端与所述滤波电路的输入端连接,所述第二电压输入端 与所述第八电阻的一端连接,所述第八电阻的另一端分别与所述辅助运放正向 输入端以及所述接地端连接,所述辅助运放反向输入端分别与所述第九电阻的 一端、所述第十电阻的一端以及所述第十一电阻的一端连接, 所述第九电阻的 另一端与所述低通输出端连接,所述第十电阻的另一端与所述高通输出端以及 所述第十二电阻的一端连接,所述第十二电阻的另一端与所述第十三电阻的一 端连接, 所述第十三电阻的另一端与所述第一频率调节端连接, 所述第二频率 调节端与所述第十四电阻的一端连接,所述第十四电阻的另一端与所述第十五 电阻的一端连接, 所述第十五电阻的另一端与所述带通输出端连接, 所述辅助 运放输出端分别与所述第十一电阻的另一端以及所述滤波电路的输出端连接。
12、 如权利要求 11所述的装置, 其特征在于, 所述信号调整电路包括电 平调整电路, 所述电平调整电路用于对肌电信号进行电平调整处理。
13、 如权利要求 12所述的装置, 其特征在于, 所述电平调整电路包括第 十六电阻、 第十七电阻、 第十八电阻、 第十九电阻、 第二十电阻、 第二十一电 阻、 供电电源、 第五二极管以及第六运算放大器, 其中:
所述第十六电阻的一端与所述电平调整电路的输入端连接,所述第十六电 阻的另一端与所述第十七电阻的一端、所述第十八电阻的一端以及所述第六运 算放大器的正极输入端连接, 所述第十七电阻的另一端与所述供电电源连接, 所述第十八电阻的另一端接地,所述第六运算放大器的负极输入端与所述第十 九电阻的一端以及所述第二十电阻的一端连接, 所述第十九电阻的另一端接 地,所述第二十电阻的另一端与所述第六运算放大器的输出端以及所述第二十 一电阻的一端连接,所述第二十一电阻的另一端与所述第五二极管的负极以及 所述电平调整电路的输出端连接。
14、 如权利要求 1所述的装置, 其特征在于, 所述信号调整电路包括电压 跟随电路、 第一放大电路、 滤波电路、 第二放大电路、 电平调整电路以及浮地 电路, 其中:
所述电压跟随电路, 与所述导联电路连接, 用于对所述肌电信号进行緩冲 处理, 并将经緩冲处理过的肌电信号输出到所述第一放大电路; 所述第一放大电路, 与所述电压跟随电路连接、用于对所述经緩冲处理过 的肌电信号进行第一级放大处理,并将经第一级放大处理过的肌电信号输出到 所述滤波电路;
所述滤波电路, 与所述第一放大电路连接, 用于对所述经第一级放大处理 过的肌电信号进行滤波处理,并将经滤波处理过的肌电信号输出到所述第二放 大电路;
所述第二放大电路, 与所述滤波电路连接, 用于对所述经滤波处理过的肌 电信进行第二级放大处理,并将经第二级放大处理过的肌电信号输出到所述电 平调整电路;
所述电平调整电路, 与所述第二放大电路连接,用于对所述经第二级放大 处理过的肌电信号进行电平调整处理,并将电平调整处理得到的所述肌电电压 输出到所述信号釆样电路;
所述浮地电路, 分别与所述导联电路以及所述第一放大电路连接, 用于根 据所述第一放大电路的电压参考点的参考电压, 向所述导联电路提供浮地电 压。
15、 如权利要求 14所述的装置, 其特征在于, 所述第二放大电路包括第 二十二电阻、 第二十三电阻以及第七运算放大器, 其中:
所述第七运算放大器的正极输入端与所述第二放大电路的输入端连接,所 述第七运算放大器的负极输入端与所述第二十二电阻的一端以及所述第二十 三电阻的一端连接, 所述第二十二电阻的另一端接地, 所述第二十三电阻的另 一端与所述第七运算放大器的输出端连接,所述第七运算放大器的输出端与所 述第二放大电路的输出端连接。
16、 如权利要求 1或 14所述的装置, 其特征在于, 所述装置包括供电电 路, 所述供电电路分别与所述信号调整电路以及所述信号釆样电路连接,用于 对所述信号调整电路以及所述信号釆样电路进行供电。 置和移动终端, 其中:
所述肌电信号釆集装置包括信号釆样电路、至少一组导联电路以及与所述 至少一组导联电路对应的至少一路信号调整电路, 所述导联电路包括电极片, 其中: 所述至少一组导联电路, 用于通过电极片获取肌体表面的肌电信号, 并 将所述肌电信号输出到所述信号调整电路; 所述至少一路信号调整电路, 与所 述至少一组导联电路对应连接,用于将所述肌电信号经调整处理后得到的肌电 电压输出到所述信号釆样电路; 所述信号釆样电路, 与所述至少一路信号调整 电路连接, 用于对所述肌电电压进行釆样处理得到肌电数据信号;
所述移动终端,用于获取所述信号釆样电路对所述肌电电压进行釆样处理 得到的肌电数据信号, 对所述肌电数据信号进行运算分析处理, 并显示运算分 析处理得到的分析结果。
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