CN110523000B - Electrocardiogram simulation device - Google Patents
Electrocardiogram simulation device Download PDFInfo
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- CN110523000B CN110523000B CN201910722343.1A CN201910722343A CN110523000B CN 110523000 B CN110523000 B CN 110523000B CN 201910722343 A CN201910722343 A CN 201910722343A CN 110523000 B CN110523000 B CN 110523000B
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- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/362—Heart stimulators
- A61N1/37—Monitoring; Protecting
- A61N1/3706—Pacemaker parameters
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Abstract
The invention belongs to the field of medical electronic equipment, and discloses an electrocardiograph simulation device, which receives an original trigger signal through a control module and generates a first trigger signal, a plurality of switch control signals and a second trigger signal according to the original trigger signal; the original trigger signal carries electrode selection information; the pacing signal generation module generates an original pacing signal according to the first trigger signal; the level conversion module generates a target pacing signal according to the original pacing signal; the electrocardiosignal generation module generates an electrocardiosignal according to the second trigger signal; the plurality of switch modules are communicated with or cut off the target pacing signals according to the switch control signals; the plurality of adder modules generate an electrocardio superposition signal according to the electrocardio signal and the target pacing signal; because the target pacing signals can be output to any one or more adder modules, the electrocardiosignals and the target pacing signals are overlapped by any one or more adder modules, and the testing efficiency and the testing integrity are improved.
Description
Technical Field
The invention belongs to the field of medical electronic equipment, and particularly relates to an electrocardiograph simulation device.
Background
The pacing signal is also called pulse signal or nail mark, which is a tiny electric pulse for the pacemaker to transmit to heart when needed, a mark for stimulating heart beating is reflected on the electrocardiogram, some of the pacing signal on the electrocardiogram plays a role in clinical medicine, after the artificial cardiac pacemaker is implanted, the function and working state of the pacemaker are reflected by recording the surface electrocardiogram, the fault occurrence is diagnosed, then the doctor judges the functional state of the pacemaker by analyzing the pacing signal on the electrocardiogram, and the pacing parameters are adjusted. The pacing signals on the electrocardiosignal are detected by the medical equipment in the current market, and are mainly acquired and sampled through a high-precision analog-to-digital converter.
According to the clinical application of Pace signals, the pacing signals are superimposed on the electrodes of certain cardiac signals reflecting the working state of the pacemaker. The electrocardio simulation device of the pacing signal can simulate a human body implanted pacemaker to transmit a tiny electric pulse signal to the heart, thereby meeting the test requirement of medical equipment on the accuracy of the pacing signal. The test equipment used as the medical equipment for simulating the human body pacing signals is required to work stably and has high accuracy, wide testable range, and low cost, and can cover the standard requirements of all medical equipment on the market for detecting the pacing signals, and the operation is simple and flexible.
In addition, in practical use, the existing pacing signal simulation device can only simultaneously superimpose pacing signals on electrocardiosignals of all electrodes or superimpose pacing signals on a single electrocardiosignal of a certain electrode, which results in low efficiency and incomplete test.
Therefore, the traditional electrocardio simulation device has the defects that the pacing signal is only overlapped on the electrocardiosignals of all electrodes at the same time or the pacing signal is overlapped on a single-path electrocardiosignal of one electrode, so that the test efficiency is low and the test is incomplete.
Disclosure of Invention
The invention provides an electrocardiograph simulation device, which aims to solve the problems that the traditional electrocardiograph simulation device only can simultaneously superimpose pacing signals on electrocardiograph signals of all electrodes or superimpose the pacing signals on a single-path electrocardiograph signal of one electrode, thereby causing low testing efficiency and incomplete testing.
The invention is realized in that an electrocardiographic simulation apparatus is connected to a plurality of electrodes, the electrocardiographic simulation apparatus comprising:
the control module is used for receiving the original trigger signal and generating a first trigger signal, a plurality of switch control signals and a second trigger signal according to the original trigger signal; the original trigger signal carries electrode selection information;
the pacing signal generation module is connected with the control module and used for generating an original pacing signal according to the first trigger signal;
the electrocardiosignal generation module is connected with the control module and used for generating an electrocardiosignal according to the second trigger signal;
the level conversion module is connected with the pacing signal generation module and is used for generating a target pacing signal according to the original pacing signal;
the switch modules are connected with the control module and the level conversion module and are used for communicating or switching off the target pacing signals according to the switch control signals;
and the adder modules are connected with the electrodes, the electrocardiosignal generating modules and the switch modules and are used for generating electrocardiosignal superposition signals according to the electrocardiosignals and the target pacing signals.
In one embodiment, the electrocardiograph signal generation module includes:
the digital-to-analog conversion module is connected with the control module and is used for generating an original electrocardiosignal according to the second trigger signal;
and the attenuation module is connected with the digital-to-analog conversion module and the adder module and is used for carrying out level conversion and attenuation on the original electrocardiosignal.
In one embodiment, the electrocardiographic simulation apparatus further includes:
the display module is connected with the control module and used for displaying according to the display signal;
the control module is also used for generating the display signal according to the original trigger signal.
In one embodiment, the original trigger signal carries the electrode selection information, pacing signal parameter information, and electrocardiosignal parameter information, and the control module is specifically configured to:
the first trigger signal is generated according to the pacing signal parameter information, the second trigger signal is generated according to the electrocardiosignal parameter information, and a plurality of switch control signals are generated according to the electrode selection information.
In one embodiment, the electrocardiographic simulation apparatus further includes:
and the anti-interference modules are connected with the adder modules in a one-to-one correspondence manner and connected with the electrodes in a one-to-one correspondence manner, and are used for carrying out voltage clamping on the electrocardio superposition signals and inhibiting electrostatic interference.
In one embodiment, the anti-interference module comprises a first diode, a second diode and magnetic beads;
the first end of the magnetic bead, the cathode of the first diode and the anode of the second diode jointly form the input end of the anti-interference module, the second end of the magnetic bead is the output end of the anti-interference module, the anode of the first diode is connected with a first power supply, and the cathode of the second diode is connected with a second power supply.
In one embodiment, the pacing signal generation module includes a digital-to-analog converter;
the serial clock end of the digital-to-analog converter, the loading end of the digital-to-analog converter, the trigger control end of the digital-to-analog converter and the serial data end of the digital-to-analog converter jointly form a first trigger signal input end of the pacing signal generating module, and the analog voltage output end of the digital-to-analog converter is an original pacing signal output end of the pacing signal generating module.
In one embodiment, the level shift module includes a first operational amplifier, a first resistor, a second resistor, a third resistor, and a fourth resistor;
the positive phase input end of the first operational amplifier is connected with the first end of the first resistor and the first end of the second resistor, the second end of the first resistor is an original pacing signal input end of the level conversion module, the negative phase input end of the first operational amplifier is connected with the first end of the third resistor and the first end of the fourth resistor, the second end of the third resistor is a reference voltage input end of the level conversion module, the output end of the first operational amplifier and the second end of the fourth resistor jointly form a target pacing signal output end of the level conversion module, and the second end of the second resistor is connected with a power supply ground.
In one embodiment, the adder module includes a second operational amplifier, a fifth resistor, a sixth resistor, and a seventh resistor;
the positive input end of the second operational amplifier is connected with the first end of the fifth resistor, the first end of the sixth resistor and the first end of the seventh resistor, the second end of the fifth resistor is an electrocardiosignal input end of the adder module, the second end of the seventh resistor is a target pacing signal input end of the adder module, and the negative input end of the second operational amplifier and the second end of the sixth resistor jointly form an electrocardio superposition signal output end of the adder module.
In one embodiment, the switch module comprises an analog switch;
the input end of the analog switch is a target pacing signal input end of the switch module, the output end of the analog switch is a target pacing signal output end of the switch module, and the control end of the analog switch is a control end of the switch module.
In one embodiment, the control module includes a microprocessor;
the first data input and output end of the microprocessor, the second data input and output end of the microprocessor, the third data input and output end of the microprocessor and the fourth data input and output end of the microprocessor jointly form a first trigger signal output end of the control module, and the fifth data input and output end of the microprocessor, the sixth data input and output end of the microprocessor, the seventh data input and output end of the microprocessor and the eighth data input and output end of the microprocessor are second trigger signal output ends of the control module;
the microprocessor also comprises a plurality of switch control signal output ends;
wherein each switch control signal output terminal comprises a data input/output terminal.
The embodiment of the invention is connected with a plurality of electrodes and comprises a key module, a control module, a pacing signal generation module, a level conversion module, an electrocardiosignal generation module, a plurality of switch modules and a plurality of adder modules; the control module receives the original trigger signal and generates a first trigger signal, a plurality of switch control signals and a second trigger signal according to the original trigger signal; the original trigger signal carries electrode selection information; the pacing signal generation module generates an original pacing signal according to the first trigger signal; the level conversion module generates a target pacing signal according to the original pacing signal; the electrocardiosignal generating module generates an electrocardiosignal according to the second trigger signal; the plurality of switch modules are communicated with or cut off the target pacing signals according to the switch control signals; the plurality of adder modules generate an electrocardio superposition signal according to the electrocardio signal and the target pacing signal; because the plurality of switch modules are communicated with or cut off the target pacing signals according to the switch control signals, the target pacing signals can be output to any one or more adder modules, so that the electrocardiosignals and the target pacing signals are overlapped by any one or more adder modules, and the testing efficiency and the testing integrity are improved.
Drawings
In order to more clearly illustrate the technical invention in the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it will be apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort to those of ordinary skill in the art.
FIG. 1 is a block diagram of an electrocardiograph simulation device according to an embodiment of the present invention;
FIG. 2 is a block diagram of another electrocardiograph signal module of the electrocardiograph simulation device according to the embodiment of the present invention;
FIG. 3 is a block diagram of an electrocardiograph signal generating module of an electrocardiograph simulation device according to an embodiment of the present invention;
FIG. 4 is a block diagram of another embodiment of an electrocardiograph simulation apparatus according to the present invention;
FIG. 5 is a block diagram of another embodiment of an electrocardiograph simulation apparatus according to the present invention;
FIG. 6 is a schematic circuit diagram of a switch module, an adder module, and an anti-interference module of an electrocardiograph simulation device according to an embodiment of the present invention;
fig. 7 is a schematic diagram of an exemplary circuit of a pacing signal generating module and a level converting module of an electrocardiograph analog device according to an embodiment of the present invention;
fig. 8 is a schematic circuit diagram of a control module of an electrocardiograph simulation device according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 shows a module structure of an electrocardiographic simulation apparatus according to an embodiment of the present invention, and for convenience of explanation, only the portions related to the embodiment of the present invention are shown in detail as follows:
the electrocardiograph simulation apparatus is connected to the plurality of electrodes 07i, and includes a key module 01, a control module 02, a pacing signal generation module 03, a level conversion module 04, an electrocardiograph signal generation module 010, a plurality of switch modules 05i, and a plurality of adder modules 06i.
The control module 02 is used for receiving an original trigger signal and generating a first trigger signal, a plurality of switch control signals and a second trigger signal according to the original trigger signal; the original trigger signal carries electrode selection information; the pacing signal generating module 03 is connected with the control module 02 and is used for generating an original pacing signal according to the first trigger signal; the level conversion module 04 is connected with the pacing signal generation module 03 and is used for generating a target pacing signal according to the original pacing signal; the electrocardiosignal generation module 010 is connected with the control module 02 and is used for generating electrocardiosignals according to the second trigger signal; a plurality of switch modules 05i are connected with the control module 02 and the level conversion module 04 and are used for communicating or shutting off the target pacing signals according to the switch control signals; the plurality of adder modules 06i are connected to the plurality of electrodes 07i, the electrocardiosignal generation module 010 and the level conversion module 04 for generating an electrocardiosignal superposition signal according to the electrocardiosignal and the target pacing signal.
In specific implementation, the electrode selection information can select any one or more electrodes to forward the electrocardio superposition signals, so that the control module generates a plurality of switch control signals according to the electrode selection information (original trigger signals), and the plurality of switch modules are communicated or cut off the target pacing signals according to the plurality of switch control signals, so that the target pacing signals can be output to any one or more adder modules, and the electrocardio signals and the target pacing signals are superposed by the any one or more adder modules, and finally, the electrocardio superposition signals are forwarded by any one or more electrodes, so that the test efficiency and the test integrity are improved.
In specific implementation, as shown in fig. 2, the electrocardiograph simulation device further includes a triggering module 01.
The trigger module 01 is connected with the control module 02 and is used for generating an original trigger signal according to user input. The triggering module 01 can be a key or a touch screen. The triggering module 01 can also be a mobile terminal and a communication module connected with the mobile terminal in a wireless way. The mobile terminal generates an original trigger signal according to user input, and the communication module forwards the original trigger signal.
In specific implementation, the original trigger signal carries electrode selection information, pacing signal parameter information and electrocardiosignal parameter information, and the control module 02 is specifically configured to:
the first trigger signal is generated according to the pacing signal parameter information, the second trigger signal is generated according to the electrocardiosignal parameter information, and a plurality of switch control signals are generated according to the electrode selection information.
The electrodes 07i are connected with the adder modules 06i in a one-to-one correspondence manner and are used for forwarding the electrocardio superposition signals. The electrocardiographic superimposed signal is output through the plurality of electrodes 07i to meet the testing requirements of the medical equipment on the accuracy of the pacing signals. The triggering module 01 may be a matrix key. A user can set an electrocardiosignal and a pacing signal through the triggering module 01, the pulse width of the pacing signal can be set to be in the range of 0.1ms to 2ms, the amplitude of the pacing signal can be set to be in the range of +/-0.75 mV to +/-700 mV, the amplitude of the electrocardiosignal can be set to be in the range of +/-0.05 mV to +/-12.0 mV, the pulse rate of the electrocardiosignal can be set to be in the range of 5bpm to 400bpm, the target pacing signal can be selectively overlapped or not overlapped on the electrocardiosignal through the triggering module 01, all the control processes are automatically completed by a control module program, the target pacing signal and the electrocardiosignal meeting the expected target are finally output, and waveform parameters are displayed on the display module 08.
The electrocardio simulation device also comprises a power supply module, and the power supply module generates a power supply according to an input power supply so as to supply power to each functional module.
The power module is mainly powered by an AC adapter and a rechargeable lithium battery, and then the power module is used for converting to obtain a power supply required by a circuit, the power supply of the lithium battery can reduce the power frequency interference of the adapter to the electrocardiosignal and the pacing signal, and the isolation conversion of the power module circuit can reduce the output interference to the electrocardiosignal and the pacing signal.
As shown in fig. 3, the electrocardiograph signal generation module 010 includes a digital-to-analog conversion module 011 and an attenuation module 012.
The digital-to-analog conversion module 011 is connected with the control module 02 and is used for generating an original electrocardiosignal according to the second trigger signal; the attenuation module 012 is connected to the digital-analog conversion module 011 and the adder module 06i, and is used for performing level conversion and attenuation on the original electrocardiograph signal.
As shown in fig. 4, the electrocardiograph simulation apparatus further includes a display module 08.
The display module 08 is connected with the control module 02 and is used for displaying according to display signals; the control module 02 is further configured to generate the display signal according to the original trigger signal.
The original trigger signal carries the selection information, pacing signal parameter information and electrocardiosignal parameter information, and the display of the waveform parameters output by each electrode is realized through the display module.
As shown in fig. 5, the electrocardiograph simulation apparatus further includes an anti-interference module 09i.
The anti-interference modules 09i are connected with the adder modules 06i in a one-to-one correspondence manner and connected with the electrodes 07i in a one-to-one correspondence manner, and are used for carrying out voltage clamping and static interference suppression on the electrocardio superposition signals.
By carrying out voltage clamping and static interference suppression on the electrocardio superposition signals, the circuit is prevented from being interfered or damaged by external large voltage or static pulse and the like.
Fig. 6 shows an exemplary circuit structure of the electrocardiograph analog device switch module 05i, the adder module 06i and the anti-interference module 09i according to the embodiment of the present invention, and for convenience of explanation, only the portions related to the embodiment of the present invention are shown in detail as follows:
the anti-interference module 09i includes a first diode D1, a second diode D2, and a magnetic bead B1.
The first end of the magnetic bead B1, the negative electrode of the first diode D1 and the positive electrode of the second diode D2 jointly form the input end of the anti-interference module 09i, the second end of the magnetic bead B1 is the output end of the anti-interference module 09i, the positive electrode of the first diode D1 is connected with a first power supply VAA, and the negative electrode of the second diode D2 is connected with a second power supply VBB.
The adder module 06i includes a second operational amplifier U3, a fifth resistor R5, a sixth resistor R6, and a seventh resistor R7.
The non-inverting input end of the second operational amplifier U3 is connected with the first end of the fifth resistor R5, the first end of the sixth resistor R6, and the first end of the seventh resistor R7, the second end of the fifth resistor R5 is the electrocardiosignal input end of the adder module 06i, the second end of the seventh resistor R7 is the target pacing signal input end of the adder module 06i, and the inverting input end of the second operational amplifier U3 and the second end of the sixth resistor R6 together form an electrocardiosignal superposition signal output end of the adder module 06i.
The resistance of the fifth resistor R5, the resistance of the sixth resistor R6, and the resistance of the seventh resistor R7 are equal.
The switch module 05i includes an analog switch U4.
The input end A of the analog switch U4 is a target pacing signal input end of the switch module 05i, the output end B of the analog switch U4 is a target pacing signal output end of the switch module 05i, and the control end C of the analog switch U4 is a control end of the switch module 05 i.
Whether the target pacing signals are required to be overlapped or not is controlled through a single-path analog switch, and anti-interference performance of output signals of the electrodes 07i is improved.
Fig. 7 shows an exemplary circuit structure of the pacing signal generating module 03 and the level converting module 04 of the electrocardiograph analog device according to an embodiment of the present invention, and for convenience of explanation, only the portions related to the embodiment of the present invention are shown, and the details are as follows:
the pacing signal generation module 03 includes a digital-to-analog converter U1.
The serial clock end SCLK of the digital-to-analog converter U1, the loading end LDAC of the digital-to-analog converter U1, the trigger control end SYNC of the digital-to-analog converter U1, and the serial data end DIN of the digital-to-analog converter U1 together form a first trigger signal input end of the pacing signal generating module 03, and the analog voltage output end VOUT of the digital-to-analog converter U1 is an original pacing signal output end of the pacing signal generating module 03.
The level shift module 04 includes a first operational amplifier U2, a first resistor R1, a second resistor R2, a third resistor R3, and a fourth resistor R4.
The positive input end of the first operational amplifier U2 is connected with the first end of the first resistor R1 and the first end of the second resistor R2, the second end of the first resistor R1 is an original pacing signal input end of the level conversion module 04, the negative input end of the first operational amplifier U2 is connected with the first end of the third resistor R3 and the first end of the fourth resistor R4, the second end of the third resistor R3 is a reference voltage input end of the level conversion module 04, the output end of the first operational amplifier U2 and the second end of the fourth resistor R4 together form a target pacing signal output end of the level conversion module 04, and the second end of the second resistor R2 is connected with a power supply.
The level conversion module 04 may be a subtractor module, and the subtractor module performs impedance matching by using a first resistor R1, a second resistor R2, a third resistor R3, and a fourth resistor R4, and forms a differential circuit with the first operational amplifier U2, i.e.: the voltage of the target pacing signal is equal to the difference between the voltage of the original pacing signal and the reference voltage. When the reference voltage is 2.5V, when the microcontroller controls the digital-to-analog converter U1 to output the original pacing signal with the amplitude equal to 2.5V, the target pacing signal is output as 0, when the microcontroller controls the digital-to-analog converter U1 to output the original pacing signal with the amplitude greater than 2.5V, the target pacing signal is output as a positive pulse signal, and when the microcontroller controls the digital-to-analog converter U1 to output the original pacing signal with the amplitude less than 2.5V, the target pacing signal is output as a negative pulse signal.
Fig. 8 shows an exemplary circuit structure of the electrocardiograph simulation device control module 02 according to the embodiment of the present invention, and for convenience of explanation, only the portions relevant to the embodiment of the present invention are shown, and the details are as follows:
the control module 02 includes a microprocessor U5.
The first data input/output end P1.0 of the microprocessor U5, the second data input/output end P1.1 of the microprocessor U5, the third data input/output end P1.2 of the microprocessor U5, and the fourth data input/output end P1.3 of the microprocessor U5 together form a first trigger signal output end of the control module 02, and the fifth data input/output end P1.4 of the microprocessor U5, the sixth data input/output end P1.5 of the microprocessor U5, the seventh data input/output end P1.6 of the microprocessor U5, and the eighth data input/output end P1.7 of the microprocessor U5 are second trigger signal output ends of the control module 02.
The microprocessor U5 also comprises a plurality of switch control signal output ends;
wherein each switch control signal output terminal comprises a data input/output terminal.
The following further describes the operation of the device shown in fig. 6 to 8:
the microprocessor U5 generates a first trigger signal, a plurality of switch control signals and a second trigger signal according to the original trigger signal; the first trigger signal is output from the first data input/output end P1.0 of the microprocessor U5, the second data input/output end P1.1 of the microprocessor U5, the third data input/output end P1.2 of the microprocessor U5, and the fourth data input/output end P1.3 of the microprocessor U5 to the serial clock end SCLK of the digital-to-analog converter U1, the loading end LDAC of the digital-to-analog converter U1, the trigger control end SYNC of the digital-to-analog converter U1, and the serial data end DIN of the digital-to-analog converter U1, the electrocardiosignal is output from the fifth data input/output end P1.4 of the microprocessor U5 to the second end of the fifth resistor R5 of the adder module 06i, and the plurality of switch control signals are respectively output from the plurality of data input/output ends of the microprocessor U5 to the control ends C of the plurality of analog switches U4.
The first trigger signal is output from the sixth data input/output end P1.5 of the microprocessor U5, the seventh data input/output end P1.6 of the microprocessor U5, and the eighth data input/output end P1.7 of the microprocessor U5 to the electrocardiograph signal generating module 010, and the electrocardiograph signal generating module 010 generates an electrocardiograph signal according to the second trigger signal.
The digital-analog converter U1 generates an original pacing signal according to the first trigger signal and sends the original pacing signal to a non-inverting input end of the first operational amplifier U2 from an analog voltage output end VOUT of the digital-analog converter U1, the first operational amplifier U2 generates a target pacing signal according to the original pacing signal and a reference voltage and sends the target pacing signal to an input end a of the plurality of analog switches U4 from an output end of the first operational amplifier U2, the plurality of analog switches U4 are respectively connected or disconnected with the target pacing signal according to a plurality of switch control signals, when the analog switches U4 are connected with the target pacing signal, the target pacing signal is output from an output end B of the analog switches U4 to a second end of a seventh resistor R7 of the adder module 06i, the second operational amplifier U3 of the adder module 06i generates an electrocardio-superimposed signal according to the target pacing signal and the electrocardio-signal and outputs the electrocardio-superimposed signal from an output end of the second operational amplifier U3, the first diode D1 and the second diode D2 carry out voltage clamping on the electrocardio-superimposed signal, and the magnetic beads B1 carry out electrostatic interference suppression on the electrocardio-superimposed signal.
The invention also provides an electrocardiograph simulation method based on the electrocardiograph simulation device, and the electrocardiograph simulation method comprises steps 101 to 106.
In step 101, a control module receives an original trigger signal and generates a first trigger signal, a plurality of switch control signals and a second trigger signal according to the original trigger signal; the original trigger signal carries electrode selection information, pacing signal parameter information and electrocardiosignal parameter information; the pacing signal parameter information comprises pacing signal frequency information and pacing signal amplitude information, and the electrocardiosignal parameter information comprises electrocardiosignal frequency information and electrocardiosignal amplitude information; the first trigger signal carries pacing signal parameter information, the second trigger signal carries electrocardiosignal parameter information, and the plurality of switch control signals carry electrode selection information.
In step 102, a pacing signal generation module generates an original pacing signal from the first trigger signal.
In step 103, the electrocardiosignal generating module generates an electrocardiosignal according to the second trigger signal.
In step 104, a level shift module generates a target pacing signal from the original pacing signal.
In step 105, a plurality of switch modules turn on or off the target pacing signal according to the switch control signal.
In step 106, a plurality of adder modules generate an electrocardiographic superposition signal from the electrocardiographic signal and the target pacing signal.
The embodiment of the invention comprises a control module, a pacing signal generation module, a level conversion module, an electrocardiosignal generation module, a plurality of switch modules and a plurality of adder modules which are connected with a plurality of electrodes; the control module receives the original trigger signal and generates a first trigger signal, a plurality of switch control signals and a second trigger signal according to the original trigger signal; the original trigger signal carries electrode selection information; the pacing signal generation module generates an original pacing signal according to the first trigger signal; the level conversion module generates a target pacing signal according to the original pacing signal; the electrocardiosignal generating module generates an electrocardiosignal according to the second trigger signal; the plurality of switch modules are communicated with or cut off the target pacing signals according to the switch control signals; the plurality of adder modules generate an electrocardio superposition signal according to the electrocardio signal and the target pacing signal; because the plurality of switch modules are communicated with or cut off the target pacing signals according to the switch control signals, the target pacing signals can be output to any one or more adder modules, so that the electrocardiosignals and the target pacing signals are overlapped by any one or more adder modules, and the testing efficiency and the testing integrity are improved.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (10)
1. An electrocardiographic simulation apparatus connected to a plurality of electrodes, the electrocardiographic simulation apparatus comprising:
the control module is used for receiving the original trigger signal and generating a first trigger signal, a plurality of switch control signals and a second trigger signal according to the original trigger signal; the original trigger signal carries electrode selection information;
the pacing signal generation module is connected with the control module and used for generating an original pacing signal according to the first trigger signal;
the electrocardiosignal generation module is connected with the control module and used for generating an electrocardiosignal according to the second trigger signal;
the level conversion module is connected with the pacing signal generation module and is used for generating a target pacing signal according to the original pacing signal;
the switch modules are connected with the control module and the level conversion module and are used for communicating or switching off the target pacing signals according to the switch control signals;
the adder modules are connected with the electrodes, the electrocardiosignal generation modules and the switch modules and are used for generating electrocardiosignal superposition signals according to the electrocardiosignals and the target pacing signals;
the electrode selection information selects any one or more electrodes to forward the electrocardio superposition signals, so that the control module generates a plurality of switch control signals according to the electrode selection information, the switch modules are communicated or disconnected with the target pacing signals according to the switch control signals, the target pacing signals are output to any one or more adder modules, and any one or more adder modules superimpose the electrocardio signals and the target pacing signals, so that the electrocardio superposition signals are forwarded by any one or more electrodes.
2. The electrocardiographic simulation apparatus according to claim 1, wherein the electrocardiographic signal generation module includes:
the digital-to-analog conversion module is connected with the control module and is used for generating an original electrocardiosignal according to the second trigger signal;
and the attenuation module is connected with the digital-to-analog conversion module and the adder module and is used for carrying out level conversion and attenuation on the original electrocardiosignal.
3. The electrocardiographic simulation apparatus according to claim 1, wherein the electrocardiographic simulation apparatus further comprises:
the display module is connected with the control module and used for displaying according to the display signal;
the control module is also used for generating the display signal according to the original trigger signal.
4. The electrocardiographic simulation apparatus according to claim 1, wherein the original trigger signal carries the electrode selection information, pacing signal parameter information, and electrocardiograph signal parameter information, and the control module is specifically configured to:
the first trigger signal is generated according to the pacing signal parameter information, the second trigger signal is generated according to the electrocardiosignal parameter information, and a plurality of switch control signals are generated according to the electrode selection information.
5. The electrocardiographic simulation apparatus according to claim 1, wherein the electrocardiographic simulation apparatus further comprises:
and the anti-interference modules are connected with the adder modules in a one-to-one correspondence manner and connected with the electrodes in a one-to-one correspondence manner, and are used for carrying out voltage clamping on the electrocardio superposition signals and inhibiting electrostatic interference.
6. The electrocardiographic simulation apparatus of claim 1 wherein the pacing signal generation module comprises a digital-to-analog converter;
the serial clock end of the digital-to-analog converter, the loading end of the digital-to-analog converter, the trigger control end of the digital-to-analog converter and the serial data end of the digital-to-analog converter jointly form a first trigger signal input end of the pacing signal generating module, and the analog voltage output end of the digital-to-analog converter is an original pacing signal output end of the pacing signal generating module.
7. The electrocardiographic analog device according to claim 1 wherein the level conversion module includes a first operational amplifier, a first resistor, a second resistor, a third resistor, and a fourth resistor;
the positive phase input end of the first operational amplifier is connected with the first end of the first resistor and the first end of the second resistor, the second end of the first resistor is an original pacing signal input end of the level conversion module, the negative phase input end of the first operational amplifier is connected with the first end of the third resistor and the first end of the fourth resistor, the second end of the third resistor is a reference voltage input end of the level conversion module, the output end of the first operational amplifier and the second end of the fourth resistor jointly form a target pacing signal output end of the level conversion module, and the second end of the second resistor is connected with a power supply ground.
8. The electrocardiographic simulation apparatus according to claim 1, wherein the adder module includes a second operational amplifier, a fifth resistor, a sixth resistor, and a seventh resistor;
the positive input end of the second operational amplifier is connected with the first end of the fifth resistor, the first end of the sixth resistor and the first end of the seventh resistor, the second end of the fifth resistor is an electrocardiosignal input end of the adder module, the second end of the seventh resistor is a target pacing signal input end of the adder module, and the negative input end of the second operational amplifier and the second end of the sixth resistor jointly form an electrocardio superposition signal output end of the adder module.
9. The electrocardiographic simulation apparatus according to claim 1, wherein the switch module includes an analog switch;
the input end of the analog switch is a target pacing signal input end of the switch module, the output end of the analog switch is a target pacing signal output end of the switch module, and the control end of the analog switch is a control end of the switch module.
10. The electrocardiographic simulation apparatus according to claim 1, wherein the control module includes a microprocessor;
the first data input and output end of the microprocessor, the second data input and output end of the microprocessor, the third data input and output end of the microprocessor and the fourth data input and output end of the microprocessor jointly form a first trigger signal output end of the control module, and the fifth data input and output end of the microprocessor, the sixth data input and output end of the microprocessor, the seventh data input and output end of the microprocessor and the eighth data input and output end of the microprocessor are second trigger signal output ends of the control module;
the microprocessor also comprises a plurality of switch control signal output ends;
wherein each switch control signal output terminal comprises a data input/output terminal.
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