CN211432866U - Synchronous acquisition device for cardiac shock, electrocardio and fingertip pulse waves - Google Patents
Synchronous acquisition device for cardiac shock, electrocardio and fingertip pulse waves Download PDFInfo
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- CN211432866U CN211432866U CN201922353142.7U CN201922353142U CN211432866U CN 211432866 U CN211432866 U CN 211432866U CN 201922353142 U CN201922353142 U CN 201922353142U CN 211432866 U CN211432866 U CN 211432866U
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Abstract
The utility model provides a synchronous acquisition device of cardiac shock, electrocardio and fingertip pulse wave. Three analog-to-digital conversion I/O pins of a Micro Control Unit (MCU) in the device are respectively connected with a finger-clipped infrared pulse wave measuring unit, a single-lead electrocardio detecting unit and a cushion type heart impact signal collecting unit, voltage analog quantities of the three units are converted into digital quantities, the three digital quantities are transmitted to a Matlab-based waveform receiving unit in a PC end through a Mini USB data line through the USB transmission unit, and the Matlab-based waveform receiving unit can synchronously display waveforms of heart impact signals, electrocardiosignals and fingertip pulse wave signals at the PC end. The utility model discloses, can realize synchronous acquisition heart impact signal's waveform, electrocardiosignal's waveform and the waveform of fingertip pulse wave signal to the interface visual display at the PC end comes out, has solved different equipment and can only obtain the waveform characteristic of each signal and can't obtain the problem of the chronogenesis characteristic between each signal.
Description
Technical Field
The utility model relates to a heart impact, electrocardio and fingertip pulse wave synchronous acquisition device, especially heart impact signal, electrocardiosignal and fingertip pulse wave signal's synchronous acquisition.
Background
The research on the aspect of human heart activity usually needs to synchronously acquire a plurality of different physiological signals to obtain waveform characteristics and time sequence characteristics of each signal, and analyze the relation between a plurality of physiological signals from the waveform characteristics and the time sequence characteristics to obtain the hidden relation between the human heart activity and the physiological signals, which is particularly important for the synchronous acquisition of each physiological signal. The existing electrocardio acquisition equipment often only has the acquisition function of a single physiological signal, so that the waveform characteristics of the signals which can be acquired by a plurality of equipment during acquisition lose the important influence factor of time sequence characteristics; or there are Electrocardiographic (ECG) and fingertip pulse wave (pulse) acquisition devices, but acquisition of the ballistocardiographic signal (BCG) on a new outcome of electrocardiographic studies is not considered. Therefore, the synchronous acquisition device for the cardiac shock signals, the electrocardiosignals and the fingertip pulse wave signals is designed, and the continuous research on the relationship between the human heart activity and the human characterization signals is facilitated.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of current electrocardio collection system, the utility model provides a heart is strikeed, electrocardio and fingertip pulse wave synchronous collection system, its aim at solve in the aspect of the electrocardio research because can not synchronous acquisition to a plurality of physiological signals and lead to the important chronogenesis characteristic disappearance problem between the signal to the physiological signal of new research also brings the device in the aspect of this type of electrocardio research of heart impact signal, provides better hardware basis for the research in the aspect of the electrocardio.
The purpose of the utility model is realized by adopting the following technical scheme:
a synchronous acquisition device for cardiac shock, electrocardio and fingertip pulse waves comprises a finger-clipped infrared pulse wave measurement unit, a single-lead electrocardio detection unit, a cushion type cardiac shock signal acquisition unit, a Micro Control Unit (MCU), a USB transmission unit and a waveform receiving unit based on Matlab;
three analog-to-digital conversion I/O pins of the Micro Control Unit (MCU) are respectively connected with the finger-clipped infrared pulse wave measuring unit, the single-lead electrocardiogram detecting unit and the cushion type heart impact signal acquisition unit, voltage analog quantities of the three units are converted into digital quantities, the three digital quantities are transmitted to a Matlab-based waveform receiving unit in the PC end through a Mini USB data line through the USB transmission unit, and the Matlab-based waveform receiving unit can synchronously display waveforms of heart impact signals, electrocardiogram signals and fingertip pulse wave signals at the PC end.
The Micro Control Unit (MCU) comprises a control chip U1, a first crystal oscillator Y1, a second crystal oscillator Y2, a first crystal oscillator oscillation starting capacitor C1, a second crystal oscillator oscillation starting capacitor C2, a third crystal oscillator oscillation starting capacitor C3 and a fourth crystal oscillator oscillation starting capacitor C4; the 3 rd pin of the control chip U1 is connected to one end of the second crystal oscillator Y2 and one end of the third crystal oscillator oscillation-starting capacitor C3; the 4 th pin of the control chip U1 is connected with the other end of the second crystal oscillator Y2 and one end of the fourth crystal oscillator oscillation starting capacitor C4 at the same time; the 5 th pin of the control chip U1 is connected with one end of the first crystal oscillator Y1 and one end of the first crystal oscillator oscillation starting capacitor C1 at the same time; the 6 th pin of the control chip U1 is connected with the other end of the first crystal oscillator Y1 and one end of the second crystal oscillator oscillation-starting capacitor C2 at the same time; the other ends of the first crystal oscillation starting capacitor C1, the second crystal oscillation starting capacitor C2, the third crystal oscillation starting capacitor C3 and the fourth crystal oscillation starting capacitor C4 are all grounded; the 13 th pin of the control chip U1 is externally connected with a 3.3V power supply; the 12 th pin of the control chip U1 is grounded;
the USB transmission unit comprises a USB port P1, a fuse F1, a second resistor R2, a third resistor R3 and a fourth resistor R4; one end of the fuse F1 is connected with the 1 st pin of the USB port P1, and the other end is connected with a 5V power supply; one end of the second resistor R2 is connected with the No. 2 pin of the USB port P1, and the other end of the second resistor R2 is connected with the No. 44 pin of the control chip U1; one end of the third resistor R3 is connected with the 3 rd pin of the USB port P1 and one end of the fourth resistor R4 at the same time, and the other end of the third resistor R3 is connected with the 45 th pin of the control chip U1; the other end of the fourth resistor R4 is connected with a 3.3V power supply; pin 5 of USB port P1 is connected to ground.
The finger-clipped infrared pulse wave measuring unit comprises a finger-clipped rubber sleeve HR Sensor, an MCP6004 chip U4, a diode D1, an eleventh capacitor C11, a twelfth capacitor C12, a thirteenth capacitor C13, a fourteenth capacitor C14, twenty-first resistors R21-twenty-ninth resistors R29, a slide rheostat R30 and a port P5. A 1 st pin of a finger-clamped rubber sleeve HR Sensor is connected with one end of a twenty-third resistor R23, the other end of the twenty-third resistor R23 is connected with a 5V power supply, and a 2 nd pin of the finger-clamped rubber sleeve HR Sensor is connected with one end of a fourteenth capacitor C14 and one end of a twenty-fifth resistor R25; the other end of the twenty-fifth resistor R25 is connected with a 5V power supply, and the other end of the fourteenth capacitor C14 is connected with the 10 th pin of the chip U4; the 4 th pin of the chip U4 is connected with a 5V power supply; the 11 th pin of the chip U4 is grounded; the 8 th pin of the chip U4 is connected with one end of a twenty-seventh resistor R27, one end of a twelfth capacitor C12 and one end of a slide rheostat R30; the other end of the twenty-seventh resistor R27 and the other end of the twelfth capacitor C12 are connected with one end of a twenty-second resistor R22; the other end of the twenty-second resistor R22 is connected with one end of a twenty-eighth resistor R28, the other end of the slide rheostat R30 and Vref; the other end of the twenty-eighth resistor R28 is connected with the 9 th pin of the chip U4; the moving end of the slide rheostat R30 is connected with one end of a thirteenth capacitor C13; the other end of the thirteenth capacitor C13 is connected with the 3 rd pin of the chip U4; the 1 st pin of the chip U4 is connected with one end of a twenty-fourth resistor R24, one end of an eleventh capacitor C11 and the 5 th pin of the chip U4; the other end of the twenty-fourth resistor R24 and the other end of the eleventh capacitor C11 are connected with one end of a twenty-first resistor R21; the other end of the twenty-first resistor R21 is connected with Vref and one end of a twenty-sixth resistor R26; the other end of the twenty-sixth resistor R26 is connected with the 2 nd pin of the chip U4; the 7 th pin of the chip U4 is connected with the 6 th pin of the chip U4 and the 2 nd pin of the port P5; the 1 st pin of the port P5 is connected with a 5V power supply, and the 3 rd pin of the port P5 is grounded; one end of a twenty-ninth resistor R29 is connected with a 5V power supply, and the other end of the twenty-ninth resistor R29 is connected with Vref and one end of a diode D1; the other end of the diode D1 is connected to ground.
The single-lead electrocardio detection unit comprises an electrode LA, an electrode RA, an electrode RL, an AD8232 chip U2, sixth resistors R6-fifteenth resistors R15, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8 and a port P2. The electrode LA is connected with one end of a sixth resistor R6 and one end of a ninth resistor R9, the electrode RA is connected with one end of a seventh resistor R7 and one end of a tenth resistor R10, the other end of the sixth resistor R6 is connected with the other end of the seventh resistor R7 and connected with a 5V power supply, and the other end of the ninth resistor R9 is connected with a 2 nd pin of a chip U2; the other end of the tenth resistor R10 is connected with the 3 rd pin of the chip U2; the electrode RL is connected with one end of a twelfth resistor R12, the other end of the twelfth resistor R12 is connected with a 5 th pin of a chip U2 and one end of a seventh capacitor C7, and the other end of the seventh capacitor C7 is connected with a 4 th pin of a chip U2; one end of an eighth capacitor C8 is connected with the 7 th pin of the chip U2, the other end of the eighth capacitor C8 is connected with one end of a fourteenth resistor R14, and the other end of the fourteenth resistor R14 is connected with the 8 th pin of the chip U2; one end of a fifteenth resistor R15 is connected with the 9 th pin of the chip U2, and the other end of the fifteenth resistor R15 is connected with the 10 th pin of the chip U2 and the 3 rd pin of the port P2; the 14 th pin of the chip U2 is grounded; the 15 th lead of the chip U2 is connected with a 5V power supply; a 16 th pin of the chip U2 is connected with one end of a thirteenth resistor R13 and is grounded, the other end of the thirteenth resistor R13 is connected with one end of an eleventh resistor R11, and a 17 th pin of the chip U2 and the other end of the eleventh resistor R11 are connected with a 5V power supply; one end of a sixth capacitor C6 is connected to the 1 st pin of the chip U2, the other end of the sixth capacitor C6 is connected to the 20 th pin of the chip U2 and one end of an eighth resistor R8, the other end of the eighth resistor R8 is connected to one end of a fifth resistor R5, the other end of the fifth resistor R5 is connected to one end of the fifth capacitor C5 and the 6 th pin of the chip U2, and the other end of the fifth capacitor C5 is connected to the 8 th pin of the chip U2; the 1 st pin of the port P2 is connected to a 5V power supply, and the 3 rd pin of the port P2 is grounded.
The heart impact signal acquisition unit comprises a PVDF piezoelectric film P4, an LM2904 chip U3, a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18, a nineteenth resistor R19, a twentieth resistor R20, a ninth capacitor 9, a tenth capacitor C10 and a port P3; a 1 st pin of the PVDF piezoelectric film P4 is connected with one end of a sixteenth resistor R16 and one end of a ninth capacitor C9, the other end of the sixteenth resistor R16 is connected with a 5V power supply, and the other end of the ninth capacitor C9 is simultaneously connected with one end of an eighteenth resistor R18 and a 3 rd pin of a chip U3; the other end of the eighteenth resistor R18 is connected with the No. 2 pin of the PVDF piezoelectric film P4 and is grounded, the No. 8 pin of the chip U3 is connected with a 5V power supply, and the No. 4 pin of the chip U3 is grounded; the 1 st pin of the chip U3 is connected with one end of a seventeenth resistor R17 and the 2 nd pin of the chip U3; the other end of the seventeenth resistor R17 is connected with the 5 th pin of the chip U3 and one end of a tenth capacitor C10, the other end of the tenth capacitor C10 is grounded, and the 7 th pin of the chip U3 is connected with the 2 nd pin of the port P3 and one end of a nineteenth resistor R19; the other end of the nineteenth resistor R19 is connected with the 6 th pin of the chip U3 and one end of the twentieth resistor R20, the other end of the twentieth resistor R20 is grounded, and the 1 st pin of the port P3 is connected with a 5V power supply; pin 3 of port P3 is connected to ground.
The model of the control chip U1 is STM32F103RCT 6.
The invention has the following beneficial effects:
the utility model discloses a three signal acquisition unit can realize synchronous acquisition heart impact signal's waveform, electrocardiosignal's waveform and fingertip pulse wave signal's waveform to the interface visual display at the PC end comes out, for providing audio-visual waveform characteristic and data record information in the aspect of the electrocardio research, has solved different equipment and can only obtain the waveform characteristic of each signal and can't obtain the problem of the chronogenesis characteristic between each signal, does the foreshadowing for heart impact signal, electrocardiosignal and fingertip pulse wave signal's research.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic wearing diagram of the present invention;
FIG. 3 is a flow chart of the present invention;
FIG. 4 is a schematic diagram of a Micro Control Unit (MCU) according to the present invention;
FIG. 5 is a schematic diagram of a USB transmission unit according to the present invention;
FIG. 6 is a schematic view of a single lead ECG detecting unit of the present invention;
FIG. 7 is a schematic view of a cushion-type cardioblast signal collecting unit of the present invention;
fig. 8 is a schematic view of the finger-clipped infrared pulse wave measuring unit of the present invention.
Detailed Description
The technical solution of the present invention will be further described with reference to the following specific examples.
A synchronous acquisition device for cardiac shock, electrocardio and fingertip pulse waves comprises a finger-clipped infrared pulse wave measurement unit, a single-lead electrocardio detection unit, a cushion type cardiac shock signal acquisition unit, a Micro Control Unit (MCU), a USB transmission unit and a waveform receiving unit based on Matlab;
three analog-to-digital conversion I/O pins of the Micro Control Unit (MCU) are respectively connected with the finger-clipped infrared pulse wave measuring unit, the single-lead electrocardiogram detecting unit and the cushion type heart impact signal acquisition unit, voltage analog quantities of the three units are converted into digital quantities, the three digital quantities are transmitted to a Matlab-based waveform receiving unit in the PC end through a Mini USB data line through the USB transmission unit, and the Matlab-based waveform receiving unit can synchronously display waveforms of heart impact signals, electrocardiogram signals and fingertip pulse wave signals at the PC end.
As shown in fig. 4, the Micro Control Unit (MCU) includes a control chip U1, a first crystal oscillator Y1, a second crystal oscillator Y2, a first crystal oscillator oscillation starting capacitor C1, a second crystal oscillator oscillation starting capacitor C2, a third crystal oscillator oscillation starting capacitor C3, and a fourth crystal oscillator oscillation starting capacitor C4; the 3 rd pin of the control chip U1 is connected to one end of the second crystal oscillator Y2 and one end of the third crystal oscillator oscillation-starting capacitor C3; the 4 th pin of the control chip U1 is connected with the other end of the second crystal oscillator Y2 and one end of the fourth crystal oscillator oscillation starting capacitor C4 at the same time; the 5 th pin of the control chip U1 is connected with one end of the first crystal oscillator Y1 and one end of the first crystal oscillator oscillation starting capacitor C1 at the same time; the 6 th pin of the control chip U1 is connected with the other end of the first crystal oscillator Y1 and one end of the second crystal oscillator oscillation-starting capacitor C2 at the same time; the other ends of the first crystal oscillation starting capacitor C1, the second crystal oscillation starting capacitor C2, the third crystal oscillation starting capacitor C3 and the fourth crystal oscillation starting capacitor C4 are all grounded; the 13 th pin of the control chip U1 is externally connected with a 3.3V power supply; the 12 th pin of the control chip U1 is grounded;
as shown in fig. 5, the USB transmission unit includes a USB port P1, a fuse F1, a second resistor R2, a third resistor R3, and a fourth resistor R4; one end of the fuse F1 is connected with the 1 st pin of the USB port P1, and the other end is connected with a 5V power supply; one end of the second resistor R2 is connected with the No. 2 pin of the USB port P1, and the other end of the second resistor R2 is connected with the No. 44 pin of the control chip U1; one end of the third resistor R3 is connected with the 3 rd pin of the USB port P1 and one end of the fourth resistor R4 at the same time, and the other end of the third resistor R3 is connected with the 45 th pin of the control chip U1; the other end of the fourth resistor R4 is connected with a 3.3V power supply; pin 5 of USB port P1 is connected to ground.
As shown in fig. 8, the finger-clipped infrared pulse wave measuring unit includes a finger-clipped rubber sleeve HR Sensor, an MCP6004 chip U4, a diode D1, an eleventh capacitor C11, a twelfth capacitor C12, a thirteenth capacitor C13, a fourteenth capacitor C14, twenty-first to twenty-ninth resistors R21 to R29, a slide rheostat R30, and a port P5. A 1 st pin of a finger-clamped rubber sleeve HR Sensor is connected with one end of a twenty-third resistor R23, the other end of the twenty-third resistor R23 is connected with a 5V power supply, and a 2 nd pin of the finger-clamped rubber sleeve HR Sensor is connected with one end of a fourteenth capacitor C14 and one end of a twenty-fifth resistor R25; the other end of the twenty-fifth resistor R25 is connected with a 5V power supply, and the other end of the fourteenth capacitor C14 is connected with the 10 th pin of the chip U4; the 4 th pin of the chip U4 is connected with a 5V power supply; the 11 th pin of the chip U4 is grounded; the 8 th pin of the chip U4 is connected with one end of a twenty-seventh resistor R27, one end of a twelfth capacitor C12 and one end of a slide rheostat R30; the other end of the twenty-seventh resistor R27 and the other end of the twelfth capacitor C12 are connected with one end of a twenty-second resistor R22; the other end of the twenty-second resistor R22 is connected with one end of a twenty-eighth resistor R28, the other end of the slide rheostat R30 and Vref; the other end of the twenty-eighth resistor R28 is connected with the 9 th pin of the chip U4; the moving end of the slide rheostat R30 is connected with one end of a thirteenth capacitor C13; the other end of the thirteenth capacitor C13 is connected with the 3 rd pin of the chip U4; the 1 st pin of the chip U4 is connected with one end of a twenty-fourth resistor R24, one end of an eleventh capacitor C11 and the 5 th pin of the chip U4; the other end of the twenty-fourth resistor R24 and the other end of the eleventh capacitor C11 are connected with one end of a twenty-first resistor R21; the other end of the twenty-first resistor R21 is connected with Vref and one end of a twenty-sixth resistor R26; the other end of the twenty-sixth resistor R26 is connected with the 2 nd pin of the chip U4; the 7 th pin of the chip U4 is connected with the 6 th pin of the chip U4 and the 2 nd pin of the port P5; the 1 st pin of the port P5 is connected with a 5V power supply, and the 3 rd pin of the port P5 is grounded; one end of a twenty-ninth resistor R29 is connected with a 5V power supply, and the other end of the twenty-ninth resistor R29 is connected with Vref and one end of a diode D1; the other end of the diode D1 is connected to ground.
As shown in fig. 6, the single lead electrocardiograph detection unit includes an electrode LA, an electrode RA, an electrode RL, an AD8232 chip U2, sixth to fifteenth resistors R6-R15, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, and a port P2. The electrode LA is connected with one end of a sixth resistor R6 and one end of a ninth resistor R9, the electrode RA is connected with one end of a seventh resistor R7 and one end of a tenth resistor R10, the other end of the sixth resistor R6 is connected with the other end of the seventh resistor R7 and connected with a 5V power supply, and the other end of the ninth resistor R9 is connected with a 2 nd pin of a chip U2; the other end of the tenth resistor R10 is connected with the 3 rd pin of the chip U2; the electrode RL is connected with one end of a twelfth resistor R12, the other end of the twelfth resistor R12 is connected with a 5 th pin of a chip U2 and one end of a seventh capacitor C7, and the other end of the seventh capacitor C7 is connected with a 4 th pin of a chip U2; one end of an eighth capacitor C8 is connected with the 7 th pin of the chip U2, the other end of the eighth capacitor C8 is connected with one end of a fourteenth resistor R14, and the other end of the fourteenth resistor R14 is connected with the 8 th pin of the chip U2; one end of a fifteenth resistor R15 is connected with the 9 th pin of the chip U2, and the other end of the fifteenth resistor R15 is connected with the 10 th pin of the chip U2 and the 3 rd pin of the port P2; the 14 th pin of the chip U2 is grounded; the 15 th lead of the chip U2 is connected with a 5V power supply; a 16 th pin of the chip U2 is connected with one end of a thirteenth resistor R13 and is grounded, the other end of the thirteenth resistor R13 is connected with one end of an eleventh resistor R11, and a 17 th pin of the chip U2 and the other end of the eleventh resistor R11 are connected with a 5V power supply; one end of a sixth capacitor C6 is connected to the 1 st pin of the chip U2, the other end of the sixth capacitor C6 is connected to the 20 th pin of the chip U2 and one end of an eighth resistor R8, the other end of the eighth resistor R8 is connected to one end of a fifth resistor R5, the other end of the fifth resistor R5 is connected to one end of the fifth capacitor C5 and the 6 th pin of the chip U2, and the other end of the fifth capacitor C5 is connected to the 8 th pin of the chip U2; the 1 st pin of the port P2 is connected to a 5V power supply, and the 3 rd pin of the port P2 is grounded.
As shown in fig. 7, the cardiac shock signal acquisition unit includes a PVDF piezoelectric film P4, an LM2904 chip U3, a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18, a nineteenth resistor R19, a twentieth resistor R20, a ninth capacitor 9, a tenth capacitor C10 and a port P3; a 1 st pin of the PVDF piezoelectric film P4 is connected with one end of a sixteenth resistor R16 and one end of a ninth capacitor C9, the other end of the sixteenth resistor R16 is connected with a 5V power supply, and the other end of the ninth capacitor C9 is simultaneously connected with one end of an eighteenth resistor R18 and a 3 rd pin of a chip U3; the other end of the eighteenth resistor R18 is connected with the No. 2 pin of the PVDF piezoelectric film P4 and is grounded, the No. 8 pin of the chip U3 is connected with a 5V power supply, and the No. 4 pin of the chip U3 is grounded; the 1 st pin of the chip U3 is connected with one end of a seventeenth resistor R17 and the 2 nd pin of the chip U3; the other end of the seventeenth resistor R17 is connected with the 5 th pin of the chip U3 and one end of a tenth capacitor C10, the other end of the tenth capacitor C10 is grounded, and the 7 th pin of the chip U3 is connected with the 2 nd pin of the port P3 and one end of a nineteenth resistor R19; the other end of the nineteenth resistor R19 is connected with the 6 th pin of the chip U3 and one end of the twentieth resistor R20, the other end of the twentieth resistor R20 is grounded, and the 1 st pin of the port P3 is connected with a 5V power supply; pin 3 of port P3 is connected to ground.
The model of the control chip U1 is STM32F103RCT 6.
Furthermore, the finger-clipped infrared pulse measurement unit is used for measuring fingertip pulse wave signals and comprises a finger-clipped rubber sleeve embedded with an infrared light tube and a corresponding amplifier circuit, the light tube in the finger-clipped rubber sleeve emits infrared light, the absorption amount of arterial blood to the light continuously changes along with pulse wave fluctuation, a waveform corresponding to the fingertip pulse can be obtained by collecting the intensity of the infrared light, and the obtained waveform is connected with an I/O of the Micro Control Unit (MCU) after being amplified by the amplifier circuit.
Furthermore, the single lead ECG detecting unit is used for measuring the electrical activity signals of the human heart and comprises a snap-button electrode plate, a dynamic ECG 3 lead wire and an AD8232 signal conditioning circuit, wherein the heart is excited by a pace-making point, an atrium and a ventricle in each cardiac cycle, potential differences are formed among a plurality of points on the surface of the human body along with the change of bioelectricity, fine potential signals can be obtained through the snap-button electrode plate stuck on the surface of the human body, and the obtained potential signals are connected with an I/O of a Micro Control Unit (MCU) after being filtered and amplified by the AD8232 signal conditioning circuit.
Furthermore, the cushion type cardiac shock signal acquisition unit is used for measuring mechanical activity signals of the heart of a human body and comprises a cushion embedded with a PVDF piezoelectric film and a corresponding signal conditioning circuit, when the heart of the human body beats and erupts blood each time, tiny mechanical changes of the body can be caused, when the human body sits on the cushion embedded with the PVDF piezoelectric film statically, tiny mechanical quantities are acquired through the PVDF piezoelectric film, and the acquired tiny signals are connected with an I/O (input/output) of a Micro Control Unit (MCU) after being filtered and amplified through the signal conditioning circuit.
Furthermore, the Micro Control Unit (MCU) includes three 12-bit successive approximation analog-to-digital converters, which can sequentially convert the analog quantities of three different input signals into digital quantities.
Further, the USB transmission unit sends the digital quantity converted and processed by the Micro Control Unit (MCU) to the Matlab-based waveform receiving application at the PC end via the USB2.0 full-speed bus.
Further, the Matlab-based waveform receiving application receives data transmitted from a Micro Control Unit (MCU) through a USB2.0 communication protocol, draws a waveform on an interface, and may determine whether to store the waveform according to the waveform.
As shown in fig. 1, which is a wearing schematic diagram of a device for collecting a cardiac shock signal, an electrocardiosignal and a fingertip pulse wave signal during testing, 1 is a dynamic electrocardio RL lead wire of the single-lead electrocardio detection unit, and a snap button electrode plate is pasted at the sword projection level of the right clavicle midline of a human body to connect the dynamic electrocardio RL lead wire with the single-lead electrocardio detection unit; 2 is the dynamic electrocardiogram RA lead wire of the single lead connection electrocardiogram detection unit, and the dynamic electrocardiogram RA lead wire is connected with a sticking snap fastener electrode plate at the first intercostal of the right clavicle midline of the human body; 3 is the dynamic electrocardiogram LA lead wire of the single-lead electrocardiogram detection unit, and the dynamic electrocardiogram LA lead wire is connected with a sticking snap fastener electrode plate at the first intercostal of the right clavicle midline of the human body; and 4, a lead wire between a finger-clipped rubber sleeve of the finger-clipped infrared pulse wave measuring unit and the amplifier circuit is used, and a tester sleeves the finger-clipped rubber sleeve on a forefinger. And 5, a lead wire between the PVDF piezoelectric film cushion of the cushion type cardiac shock signal acquisition unit and the signal conditioning circuit is used, so that a tester keeps quiet and sits on the PVDF piezoelectric film cushion.
As shown in fig. 2, a device for collecting a cardiac shock signal, an electrocardiographic signal and a fingertip pulse wave signal includes a finger-clipped infrared pulse wave measuring unit, a single lead electrocardiographic detecting unit, a cushion-type cardiac shock signal collecting unit, a Micro Control Unit (MCU), a USB transmission unit and a Matlab-based waveform receiving application. The Micro Control Unit (MCU) is respectively connected with the finger-clipped infrared pulse wave measuring unit, the single-lead electrocardio detecting unit, the cushion-type cardiac shock signal collecting unit and the USB transmission unit, the USB transmission unit is connected with a Personal Computer (PC) end through a Mini USB data line, and the Matlab-based waveform receiving application runs at the PC end.
The utility model discloses an among the specific technical scheme, the bioelectricity change information that single lead allies oneself with electrocardio detecting element glues electrocardio electrode slice on one's body through the collection is handled the analysis and is sent to little the control unit (MCU) is handled, and the electric activity signal of original heart becomes the waveform of voltage through single lead allies oneself with electrocardio detecting element.
The utility model discloses an among the specific technical scheme, finger clip formula infrared pulse ripples measuring unit changes information through gathering finger sleeve pipe in the infrared light and handles the analysis and send little the control unit (MCU) is handled, and original fingertip pulse signal becomes the wave form of voltage through finger clip formula infrared pulse ripples measuring unit.
The utility model discloses an among the specific technical scheme, indicate to press from both sides formula infrared pulse ripples measuring unit and carry out processing analysis and send through voltage variation information in gathering PVDF piezoelectric film little the control unit (MCU) is handled, and the mechanical activity signal of original heart indicates to press from both sides formula infrared pulse ripples measuring unit and becomes the wave form of voltage.
As shown in fig. 3, for the utility model relates to a ballistocardiogram, electrocardiosignal and fingertip pulse wave signal's collection system's little the control unit (MCU) procedure flow chart, little the control unit (MCU) is after the electricity, initialize the ADC, and set up the ADC mode into the scanning mode, sampling period sets up to 16us, scan three IO in proper order, obtain the heart rate signal after higher level's circuit processing respectively, electrocardiosignal and ballistocardiogram's analog quantity, little the control unit (MCU) converts three analog quantity into corresponding magnitude respectively through calculating after the analog quantity that obtains three signal, then send three magnitude of voltage for the computer through USB. And then circularly sampling, calculating and transmitting.
Claims (7)
1. A synchronous acquisition device for cardiac shock, electrocardio and fingertip pulse waves is characterized by comprising a finger-clipped infrared pulse wave measurement unit, a single-lead electrocardio detection unit, a cushion type cardiac shock signal acquisition unit, a Micro Control Unit (MCU), a USB transmission unit and a Matlab-based waveform receiving unit;
three analog-to-digital conversion I/O pins of the Micro Control Unit (MCU) are respectively connected with the finger-clipped infrared pulse wave measuring unit, the single-lead electrocardiogram detecting unit and the cushion type heart impact signal acquisition unit, voltage analog quantities of the three units are converted into digital quantities, the three digital quantities are transmitted to a Matlab-based waveform receiving unit in the PC end through a Mini USB data line through the USB transmission unit, and the Matlab-based waveform receiving unit can synchronously display waveforms of heart impact signals, electrocardiogram signals and fingertip pulse wave signals at the PC end.
2. The device for synchronously collecting the cardiac shock, the cardiac electricity and the fingertip pulse waves according to claim 1, wherein the Micro Control Unit (MCU) comprises a control chip U1, a first crystal oscillator Y1, a second crystal oscillator Y2, a first crystal oscillator oscillation starting capacitor C1, a second crystal oscillator oscillation starting capacitor C2, a third crystal oscillator oscillation starting capacitor C3 and a fourth crystal oscillator oscillation starting capacitor C4; the 3 rd pin of the control chip U1 is connected to one end of the second crystal oscillator Y2 and one end of the third crystal oscillator oscillation-starting capacitor C3; the 4 th pin of the control chip U1 is connected with the other end of the second crystal oscillator Y2 and one end of the fourth crystal oscillator oscillation starting capacitor C4 at the same time; the 5 th pin of the control chip U1 is connected with one end of the first crystal oscillator Y1 and one end of the first crystal oscillator oscillation starting capacitor C1 at the same time; the 6 th pin of the control chip U1 is connected with the other end of the first crystal oscillator Y1 and one end of the second crystal oscillator oscillation-starting capacitor C2 at the same time; the other ends of the first crystal oscillation starting capacitor C1, the second crystal oscillation starting capacitor C2, the third crystal oscillation starting capacitor C3 and the fourth crystal oscillation starting capacitor C4 are all grounded; the 13 th pin of the control chip U1 is externally connected with a 3.3V power supply; the 12 th pin of the control chip U1 is grounded.
3. The apparatus for synchronously acquiring cardiac shock, cardiac electricity and fingertip pulse waves according to claim 1, wherein said USB transmission unit comprises a USB port P1, a fuse F1, a second resistor R2, a third resistor R3 and a fourth resistor R4; one end of the fuse F1 is connected with the 1 st pin of the USB port P1, and the other end is connected with a 5V power supply; one end of the second resistor R2 is connected with the No. 2 pin of the USB port P1, and the other end of the second resistor R2 is connected with the No. 44 pin of the control chip U1; one end of the third resistor R3 is connected with the 3 rd pin of the USB port P1 and one end of the fourth resistor R4 at the same time, and the other end of the third resistor R3 is connected with the 45 th pin of the control chip U1; the other end of the fourth resistor R4 is connected with a 3.3V power supply; pin 5 of USB port P1 is connected to ground.
4. The device for synchronously acquiring the pulse waves of cardiac shock, electrocardio and fingertips as claimed in claim 1, wherein the finger-clipped infrared pulse wave measuring unit comprises a finger-clipped rubber sleeve HR Sensor, an MCP6004 chip U4, a diode D1, an eleventh capacitor C11, a twelfth capacitor C12, a thirteenth capacitor C13, a fourteenth capacitor C14, twenty-first to twenty-ninth resistors R21-R29, a slide rheostat R30 and a port P5; a 1 st pin of a finger-clamped rubber sleeve HR Sensor is connected with one end of a twenty-third resistor R23, the other end of the twenty-third resistor R23 is connected with a 5V power supply, and a 2 nd pin of the finger-clamped rubber sleeve HR Sensor is connected with one end of a fourteenth capacitor C14 and one end of a twenty-fifth resistor R25; the other end of the twenty-fifth resistor R25 is connected with a 5V power supply, and the other end of the fourteenth capacitor C14 is connected with the 10 th pin of the chip U4; the 4 th pin of the chip U4 is connected with a 5V power supply; the 11 th pin of the chip U4 is grounded; the 8 th pin of the chip U4 is connected with one end of a twenty-seventh resistor R27, one end of a twelfth capacitor C12 and one end of a slide rheostat R30; the other end of the twenty-seventh resistor R27 and the other end of the twelfth capacitor C12 are connected with one end of a twenty-second resistor R22; the other end of the twenty-second resistor R22 is connected with one end of a twenty-eighth resistor R28, the other end of the slide rheostat R30 and Vref; the other end of the twenty-eighth resistor R28 is connected with the 9 th pin of the chip U4; the moving end of the slide rheostat R30 is connected with one end of a thirteenth capacitor C13; the other end of the thirteenth capacitor C13 is connected with the 3 rd pin of the chip U4; the 1 st pin of the chip U4 is connected with one end of a twenty-fourth resistor R24, one end of an eleventh capacitor C11 and the 5 th pin of the chip U4; the other end of the twenty-fourth resistor R24 and the other end of the eleventh capacitor C11 are connected with one end of a twenty-first resistor R21; the other end of the twenty-first resistor R21 is connected with Vref and one end of a twenty-sixth resistor R26; the other end of the twenty-sixth resistor R26 is connected with the 2 nd pin of the chip U4; the 7 th pin of the chip U4 is connected with the 6 th pin of the chip U4 and the 2 nd pin of the port P5; the 1 st pin of the port P5 is connected with a 5V power supply, and the 3 rd pin of the port P5 is grounded; one end of a twenty-ninth resistor R29 is connected with a 5V power supply, and the other end of the twenty-ninth resistor R29 is connected with Vref and one end of a diode D1; the other end of the diode D1 is connected to ground.
5. The device for synchronously acquiring the cardiac shock, the electrocardio and the fingertip pulse waves as claimed in claim 1, wherein the single-lead electrocardio detection unit comprises an electrode LA, an electrode RA, an electrode RL, an AD8232 chip U2, sixth resistors R6-fifteenth resistors R15, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8 and a port P2; the electrode LA is connected with one end of a sixth resistor R6 and one end of a ninth resistor R9, the electrode RA is connected with one end of a seventh resistor R7 and one end of a tenth resistor R10, the other end of the sixth resistor R6 is connected with the other end of the seventh resistor R7 and connected with a 5V power supply, and the other end of the ninth resistor R9 is connected with a 2 nd pin of a chip U2; the other end of the tenth resistor R10 is connected with the 3 rd pin of the chip U2; the electrode RL is connected with one end of a twelfth resistor R12, the other end of the twelfth resistor R12 is connected with a 5 th pin of a chip U2 and one end of a seventh capacitor C7, and the other end of the seventh capacitor C7 is connected with a 4 th pin of a chip U2; one end of an eighth capacitor C8 is connected with the 7 th pin of the chip U2, the other end of the eighth capacitor C8 is connected with one end of a fourteenth resistor R14, and the other end of the fourteenth resistor R14 is connected with the 8 th pin of the chip U2; one end of a fifteenth resistor R15 is connected with the 9 th pin of the chip U2, and the other end of the fifteenth resistor R15 is connected with the 10 th pin of the chip U2 and the 3 rd pin of the port P2; the 14 th pin of the chip U2 is grounded; the 15 th lead of the chip U2 is connected with a 5V power supply; a 16 th pin of the chip U2 is connected with one end of a thirteenth resistor R13 and is grounded, the other end of the thirteenth resistor R13 is connected with one end of an eleventh resistor R11, and a 17 th pin of the chip U2 and the other end of the eleventh resistor R11 are connected with a 5V power supply; one end of a sixth capacitor C6 is connected to the 1 st pin of the chip U2, the other end of the sixth capacitor C6 is connected to the 20 th pin of the chip U2 and one end of an eighth resistor R8, the other end of the eighth resistor R8 is connected to one end of a fifth resistor R5, the other end of the fifth resistor R5 is connected to one end of the fifth capacitor C5 and the 6 th pin of the chip U2, and the other end of the fifth capacitor C5 is connected to the 8 th pin of the chip U2; the 1 st pin of the port P2 is connected to a 5V power supply, and the 3 rd pin of the port P2 is grounded.
6. The device for synchronously acquiring the cardiac shock, the electrocardio-pulse wave and the fingertip pulse wave as claimed in claim 1, wherein the cardiac shock signal acquisition unit comprises a PVDF piezoelectric film P4, an LM2904 chip U3, a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18, a nineteenth resistor R19, a twentieth resistor R20, a ninth capacitor 9, a tenth capacitor C10 and a port P3; a 1 st pin of the PVDF piezoelectric film P4 is connected with one end of a sixteenth resistor R16 and one end of a ninth capacitor C9, the other end of the sixteenth resistor R16 is connected with a 5V power supply, and the other end of the ninth capacitor C9 is simultaneously connected with one end of an eighteenth resistor R18 and a 3 rd pin of a chip U3; the other end of the eighteenth resistor R18 is connected with the No. 2 pin of the PVDF piezoelectric film P4 and is grounded, the No. 8 pin of the chip U3 is connected with a 5V power supply, and the No. 4 pin of the chip U3 is grounded; the 1 st pin of the chip U3 is connected with one end of a seventeenth resistor R17 and the 2 nd pin of the chip U3; the other end of the seventeenth resistor R17 is connected with the 5 th pin of the chip U3 and one end of a tenth capacitor C10, the other end of the tenth capacitor C10 is grounded, and the 7 th pin of the chip U3 is connected with the 2 nd pin of the port P3 and one end of a nineteenth resistor R19; the other end of the nineteenth resistor R19 is connected with the 6 th pin of the chip U3 and one end of the twentieth resistor R20, the other end of the twentieth resistor R20 is grounded, and the 1 st pin of the port P3 is connected with a 5V power supply; pin 3 of port P3 is connected to ground.
7. The synchronous acquisition device of the cardiac shock, the electrocardio and the fingertip pulse waves as claimed in claim 2, wherein the model of the control chip U1 is STM32F103RCT 6.
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