CN107899134A - A kind of defibrillator analyzer - Google Patents

Abstract

The present invention discloses a kind of defibrillator analyzer, it includes electrode interface, for connecting defibrillator to be measured；Acquisition Circuit, for obtaining the defibrillation energy signal of defibrillator to be measured；Control module, including STM32F103RE chips, for obtaining the defibrillation energy signal of defibrillator to be measured, storage energy signal data calculates the magnitude of voltage and energy value of defibrillator to be measured, and the control module also exports PWM waveform；Filter circuit, for being filtered the PWM waveform of the control module and forming analog waveform；Display module, for showing the magnitude of voltage and energy value of defibrillator release defibrillation energy to be measured.Defibrillator analyzer provided by the invention, simplifies the hardware circuit of existing defibrillator analyzer, improves accuracy in computation, reduces equipment manufacturing costs, reduces equipment volume；The present invention also has the characteristics that measurement range is wider array of at the same time, can be suitably used for the energy test of various defibrillators；There was only three on control panel and press key control, it is easy to operate.

Description

A defibrillator analyzer

technical field

The invention relates to the technical field of medical equipment measurement, in particular to a defibrillator analyzer.

Background technique

Cardiac defibrillator, also known as cardioverter, is a medical electronic device that uses a strong pulse current to pass through the heart to eliminate arrhythmia and restore it to sinus rhythm. When a patient has severe tachyarrhythmia, such as atrial flutter, atrial fibrillation, supraventricular or ventricular tachycardia, etc., hemodynamic disturbances of varying degrees are often caused. Especially when the patient has ventricular fibrillation, because the ventricle has no overall contractility, the heart ejects blood and blood pressure circulation stops. If the patient is not rescued in time, the patient often dies due to brain hypoxia for a long time. If a defibrillator is used to release a certain energy current to the patient's heart through the electrodes, it can eliminate some cardiac rhythm disorders and restore the cardiac rhythm to normal, so that the patient can be rescued and treated.

The current delivered by the defibrillator should be the lowest energy capable of terminating ventricular fibrillation. Too low energy and current will fail to terminate the arrhythmia, and too high energy and current will cause damage to the heart muscle. Generally, the duration of an instantaneous high-energy pulse that a defibrillator acts on the heart is 4-10ms, and the electric energy is within 4-400J. The impedance of the human body is different for each person. The greater the impedance of the human body, the higher the voltage required and the higher the energy selected. For different patients, different energy needs to be selected for defibrillation, so the accuracy of energy released by the defibrillator is one of the important indicators to measure whether a defibrillator is qualified.

With the development of the domestic medical industry, defibrillators have also been promoted, and defibrillator analyzers, as equipment for measuring the accuracy of energy released by defibrillators, mostly rely on imports from the United States and Europe, and there are few professional ones in China. The equipment for measuring defibrillation energy, and the defibrillator analyzer imported from abroad, although powerful, but the price is also very expensive.

Existing defibrillator energy test equipment generally uses hardware multipliers and integrators to calculate energy values, and the generation of analog waveforms is also generated by components, which makes the volume of the test equipment relatively large. Moreover, the energy testing equipment has many functions, and the operation is not very convenient. The powerful functions make its price relatively expensive.

Therefore, aiming at the above deficiencies, the present invention urgently needs to provide a defibrillator analyzer.

Contents of the invention

The object of the present invention is to provide a defibrillator analyzer, to at least solve the technical problem of the inconvenient operation of the defibrillator energy testing equipment in the prior art, and can solve the defibrillator energy testing equipment in the prior art simultaneously An expensive question.

In order to solve the above problems, the invention provides a defibrillator analyzer, its technical scheme is as follows:

A defibrillator analyzer, comprising an electrode interface, the electrode interface is used to connect the defibrillator to be tested; an acquisition circuit, the input end of the acquisition circuit is connected to the electrode interface, and the acquisition circuit is used to obtain the defibrillator to be tested The defibrillation energy signal of defibrillator; control module, described control module comprises STM32F103RE chip, and described control module is connected with described acquisition circuit, is used for obtaining the defibrillation energy signal of the defibrillator to be tested that acquisition circuit transmits , store the energy signal data, calculate the voltage value and the energy value of the defibrillator to be tested, and the control module also outputs a PWM waveform; a filter circuit, the filter circuit is connected with the control module, and the filter circuit is used to convert the The PWM waveform of the control module is filtered to form an analog waveform; the filter circuit is also connected to the electrode interface and outputs an analog waveform through the electrode interface; a display module, the display module is connected to the control module for Display the voltage value and energy value of defibrillation energy released by the defibrillator to be tested, prompt the power supply capacity, and display the analog serial number when the output analog waveform is selected.

As above-mentioned defibrillator analyzer, further preferably: also comprise control panel, control panel belongs to the part of display module as user interface; For can control the operation of the present invention through control panel, also can pass through described control panel Prompt information to understand the operating state of the present invention; four nixie tubes are provided on the display module, and three buttons are arranged on the control panel, the first button is the switch machine ON/OFF button, and the second button is the Set button , the third button is a Shift button; the first button, the second button, and the third button are all connected to the control module; seven prompt indicator lights are also provided on the display module, including power Indicator light, battery level indicator, warning indicator, display energy indicator, display voltage indicator, Set button indicator and Shift button indicator.

As in the defibrillator analyzer described above, it is further preferred to further include a power supply module, the power supply module is used to provide power supply energy for the control module, the acquisition circuit, the filter circuit and the display module.

The above-mentioned defibrillator analyzer is further preferably: a first-level protection circuit gas discharge tube, and the first-level protection circuit gas discharge tube is installed between the filter circuit and the electrode interface; the second Level protection circuit TVS diode, the second level protection circuit TVS diode is installed between the filter circuit and the electrode interface; the first level protection circuit gas discharge tube and the second level protection circuit TVS diode are used It is used to protect the components in the filter circuit.

As in the defibrillator analyzer described above, it is further preferred that: the control module also detects the power of the power module, and gives a power prompt through the display module.

As in the above-mentioned defibrillator analyzer, it is further preferred that: the analog waveform formed by the filter circuit includes sine wave, square wave, triangle wave, sinus rhythm, atrial fibrillation rhythm, supraventricular tachycardia rhythm and ventricular tachycardia heart rate.

As above-mentioned defibrillator analyzer, further preferably: also comprise voltage dividing resistance, described voltage dividing resistance is placed between described acquisition circuit and described electrode interface, and described acquisition circuit collects the voltage of described voltage dividing resistance voltage to obtain a defibrillation energy signal.

As in the defibrillator analyzer described above, it is further preferred that it further includes a simulated human body impedance circuit, and the simulated human body impedance circuit is located between the acquisition circuit and the electrode interface.

As in the defibrillator analyzer described above, it is further preferred that: the resistance value of the simulated human body impedance circuit is 50Ω.

As in the defibrillator analyzer described above, it is further preferred that: the control module detects the defibrillation energy signal according to the characteristics of the defibrillation waveform, stores the collected data after detecting the input of the defibrillated energy signal, and stops the collection after the storage is completed. The voltage value of the defibrillation energy information is the peak voltage. The search is started from the data in which the defibrillation energy signal is detected, and the maximum value of the data is collected through the bubbling method, so as to calculate the peak voltage value. The calculation formula of defibrillation energy value converts the stored data into the corresponding voltage value, and calculates the defibrillation energy value according to the energy calculation formula. The energy calculation formula is as follows:

E=∑(U ² /R)×Δt

Among them, E is the energy value;

U is the voltage value;

R is the impedance of the simulated human body;

Δt is the sampling time.

The analog waveform is generated by outputting PWM waves through the main chip, the PWM output frequency is 10KHz, different waveforms are output by changing the duty cycle, and the duty cycle change frequency is 1KHz. The analog waveform is filtered and output by two filtering circuits.

As the above-mentioned defibrillator analyzer, it is further preferred to: also include the software main flow of the main chip: start, system initialization, the main loop starts, the system judges whether it has reached 10ms, if the 10ms is timed, judge whether there is a button input, if not The key input determines whether the system is in the power-on state. If the system is not powered on, return to the beginning of the main loop; if the 10ms counts up, determine whether there is the key input. If there is no key input, determine whether the system is in the power-on state. If When the system is turned on, it enters the model signal acquisition to determine whether there is a defibrillation pulse input; if there is the key input, it enters the key detection subroutine, after exiting the key detection subroutine, enters the analog signal acquisition to determine whether there is defibrillation Pulse input; if the defibrillation pulse signal is not detected, the display interface remains unchanged; if the defibrillation pulse signal is detected, the voltage value and energy value are calculated, the voltage energy display value is updated, and the main loop is returned to start again.

As the above-mentioned defibrillator analyzer, it is further preferred to: also include a software work subroutine: when the system enters the button detection subroutine, the system judges whether it is the ON/OFF button of the switch machine, if the ON/OFF button described in the switch machine, the system Discriminate whether described ON/OFF button input time is greater than 2S, if greater than 2S, system judges whether it has been turned on, if it is on, then shuts down and exits the subroutine; if it is turned off, then boots up and exits the subroutine. If the key press time is less than 2S, exit the sub-process; if it is not the ON/OFF key of the switch, the system judges whether it is the set button Set button, if it is the Set button, the system judges whether it is the voltage energy value display interface, if it is the voltage energy value display interface , set the display interface to the waveform selection interface, and exit the process; if it is not the voltage energy value display interface, set the display interface to the voltage energy value display interface, and exit the process. If it is not the Set button, it is the Shift button input to determine whether it is the voltage energy value display interface. If it is the voltage energy value display interface, switch to the voltage energy value display and exit the process; if it is not the voltage energy value display interface, it is the waveform selection interface. , add 1 to the serial number of the output waveform, display the currently selected waveform, and exit the process.

Analysis shows that compared with the prior art, advantages and beneficial effects of the present invention are:

1. The present invention adopts the STM32F103RE chip as the control main chip of the control module. The control chip replaces the hardware and uses components to realize energy calculation and analog waveform generation, which improves the calculation accuracy, simplifies the hardware circuit, reduces the volume of the equipment, and reduces the product manufacturing costs.

2. There are only three buttons on the control panel for control, which simplifies the functions of the existing defibrillator energy testing equipment and is easy to operate.

3. The defibrillator analyzer proposed by the present invention has a wider measurement range, and can realize the shock energy measurement of most defibrillators, including defibrillators with single-phase defibrillation waveform and biphasic defibrillation waveform output.

Description of drawings

Fig. 1 is a structural block diagram of a defibrillator analyzer of the present invention;

Fig. 2 is a schematic diagram of a defibrillator analyzer of the present invention;

Fig. 3 is the main chip flowchart of defibrillator analyzer software of the present invention;

Fig. 4 is the software working subflow chart of defibrillator analyzer of the present invention;

Fig. 5 is a schematic diagram of the defibrillator analyzer panel of the present invention;

Fig. 6 is a schematic diagram of the filter circuit of the defibrillator analyzer of the present invention.

In the figure, 1-control module; 2-display module; 3-power supply module; 4-filter circuit; 5-acquisition circuit;

6-simulating human body impedance circuit; 7-electrode interface; 8-voltage divider resistor.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Fig. 1 and Fig. 2, the defibrillator analyzer of preferred embodiment of the present invention mainly comprises electrode interface 7, is used to connect the defibrillator to be tested; Acquisition circuit 5, the input end of acquisition circuit 5 is connected electrode interface 7, For obtaining the defibrillation energy signal of the defibrillator under test; the control module 1, including the STM32F103RE chip, is connected with the acquisition circuit 5, and is used for obtaining the defibrillation energy signal of the defibrillator under test transmitted by the acquisition circuit 5 , store the energy signal data, calculate the voltage value and energy value of the defibrillator to be tested, the control module 1 also outputs different PWM waveforms according to the characteristics of the output waveform; the filter circuit 4 is connected with the control module 1, and is used for the control module 1 The PWM waveform is filtered to form an analog waveform; the output end of the filter circuit 4 is also connected to the electrode interface 7 and outputs an analog waveform through the electrode interface 7; the display module 2 is connected to the control module 1 for displaying that the defibrillator to be tested releases the defibrillator It can display the voltage value and energy value of tremor energy, prompt the power supply capacity, and also display the waveform sequence number when the analog waveform is selected to be output.

In a word, as shown in Fig. 3 and Fig. 4, in order to reduce the volume of the equipment and reduce the manufacturing cost of the product, the control module 1 of the defibrillator analyzer provided by the present invention adopts the STM32F103RE chip of ST Company as the main control chip. Its peripheral circuit constitutes the minimum system of single-chip microcomputer as the control module. The STM32F103RE chip is an ARM 32-bit Cortex-M3 core, the main frequency clock can reach up to 72MHz, the 16-bit timer has input capture, output comparison and PWM functions, and 12-bit 16-channel A/D conversion. The energy measurement and analog waveform output functions of the vibrator analyzer. The control module is connected to the acquisition circuit 5, and the defibrillation energy signal is collected by the A/D conversion channel. When the main chip detects the defibrillation energy signal, the defibrillation energy data is stored, and the energy value and voltage value of the defibrillation energy are calculated;

The main software process of the main chip is shown in Figure 3. Start, system initialization, and the main loop start. The system judges whether it is 10ms. If the 10ms timer is up, judge whether there is a key input. If there is no key input, judge whether the system is in the power-on state. If the system is not powered on, return to the start of the main loop; if the 10ms counts up, determine whether there is a key input, if there is no key input, determine whether it is in the power-on state, if the system is in the power-on state, enter the model signal acquisition, and determine whether there is defibrillation Pulse input; if there is a key input, then enter the key detection subroutine (as shown in Figure 4), after exiting the key detection subroutine, enter the analog signal acquisition to determine whether there is a defibrillation pulse input. If no defibrillation pulse signal is detected, the display interface remains unchanged; if a defibrillation pulse signal is detected, the voltage value and energy value are calculated, the voltage energy display value is updated, and the main loop is returned to start again.

The software working subflow is shown in Figure 4. When the system enters the button detection subroutine, the system judges whether it is the ON/OFF button of the power switch. If it is greater than 2S, the system will judge whether it is powered on, if it is powered on, it will shut down and exit the sub-process; if it is powered off, it will power on and exit the sub-process. If the pressing time is less than 2S, exit the subroutine. If it is not the switch ON/OFF button, the system judges whether it is the setting button Set button, if it is the Set button, the system judges whether it is the voltage energy value display interface, if it is the voltage energy value display interface, set the display interface to the waveform selection interface, and exit the process; If it is not the voltage energy value display interface, set the display interface to the voltage energy value display interface and exit the process. If it is not the Set button, it is the Shift button input to determine whether it is the voltage energy value display interface, if it is the voltage energy value display interface, switch the voltage energy value display, and exit the process. If it is not the voltage energy value display interface, it is the waveform selection interface, the output waveform number is increased by 1, the currently selected waveform is displayed, and the process is exited.

The control module 1 is connected to the filter circuit 4. The analog waveform output by the defibrillator analyzer is the PWM wave output by the pin of the main chip with PWM output function, and the output duty cycle is adjusted to output the corresponding analog waveform. The output frequency of the PWM wave is 10KHz. The changing frequency of the duty cycle is 1KHz. Then the analog waveform is filtered and output by the filter circuit 4 (see the filter circuit in FIG. 6 ). The control module 1 can also detect the battery power, and when the battery power is too low, control the battery power indicator light to flash to prompt.

The input end of the acquisition circuit 5 is connected to the electrode interface 7, and the acquisition circuit 5 is used to obtain the defibrillation energy signal of the defibrillator to be tested; the output end of the acquisition circuit 5 is connected to the control module 1, and the acquisition circuit 5 transmits the collected analog signal To the control module 1, the control module 1 analyzes and processes the collected analog signals, and calculates voltage and energy values;

A filter circuit 4, the filter circuit 4 is connected to the control module 1, and the filter circuit 4 is used to filter the PWM waveform of the control module 1 and form an analog waveform; the filter circuit 4 is also connected to the electrode interface 7 and outputs an analog waveform through the electrode interface 7;

In order to simplify operations, as shown in Figure 5, the present invention also includes a control panel, the control panel belongs to a part of the display module 2, and the display module 2 is provided with four digital tubes, and the control panel is provided with three buttons, the ON/OFF button (ie The first button) is the switch button, the Set button (ie the second button) is the setting button, and the setting display interface is the energy voltage value interface or the waveform selection interface; the Shift button (ie the third button) has different functions according to different display interfaces Control function, if the display interface is an energy voltage value display interface, the Shift button is used as a switch control button for energy value and voltage value; if the display interface is a waveform selection interface, the Shift button is used as a control button for waveform selection; display module 2 and control Module 1 is connected. The ON/OFF button (that is, the first button) is used to control the start and shutdown of the defibrillator analyzer; the Set button (that is, the second button) is used to set the display interface, and the display interface includes the display energy voltage value interface and the output analog waveform selection interface ; The Shift button (i.e. the third button) performs a corresponding switching function according to the display interface. If the display interface is an energy voltage display interface, then the Shift button is used to switch the displayed energy value or voltage value. If the display interface is an output analog waveform selection interface, Then the Shift button is used to select the output analog waveform.

The present invention also includes the gas discharge tube of the first level protection circuit, the gas discharge tube of the first level protection circuit is installed between the filter circuit 4 and the electrode interface 7; the TVS diode of the second level protection circuit, the TVS diode of the second level protection circuit is installed on Between the filter circuit 4 and the electrode interface 7; the gas discharge tube of the first protection circuit and the TVS diode of the second protection circuit are used to protect components. The waveform output of the defibrillator analyzer is output by the control module 1 according to the characteristics of the output waveform to output different PWM waves, and then filtered by the filter circuit 4 to generate a variety of analog waveforms, the output waveform can be selected by pressing the button, and the filter circuit 4 passes the electrode Interface 7 is connected with external equipment.

In the present invention, the control module 1 also has the function of detecting the electric quantity of the power supply, which can detect the electric quantity of the power supply module 3 and give a reminder of the electric quantity through the display module. When the power supply is sufficient, the battery power indicator is always on; when the detected power value is lower than the first threshold, the battery power indicator flashes slowly; when the detected power value is lower than the second threshold, the battery power indicator flashes quickly ; When it is detected that the power value is lower than the third threshold, shut down.

In the present invention, the analog waveform formed by filter circuit 4 includes sine wave, square wave, triangular wave, sinus rhythm, atrial fibrillation rhythm, supraventricular tachycardia rhythm and ventricular tachycardia rhythm, corresponding to the display module display output simulation Waveform number 0-6.

In the present invention, the voltage dividing resistor 8 is placed between the acquisition circuit 4 and the electrode interface 7, and the acquisition circuit 4 acquires the defibrillation energy signal by collecting the voltage of the voltage dividing resistor 8.

In the present invention, the simulated human body impedance circuit 6 is located between the acquisition circuit 4 and the electrode interface 7 . There are many options for simulating human body impedance 6, including 25Ω, 50Ω, 75Ω, 100Ω, 125Ω, 150Ω, and 175Ω, and 50Ω is used by default.

The measurement of the energy of the defibrillator analyzer of the present invention is to release the electric shock by the external defibrillation equipment, and the energy signal enters the control module 1 through the acquisition circuit 5, and the control module 1 realizes the calculation of the peak voltage and energy by software programming, and then calculates the The energy value or voltage value is output to the display module 2 for display, and the energy value or voltage value can be selected to be displayed by pressing the button. The control module 1 detects the defibrillation energy signal according to the characteristics of the defibrillation waveform, stores the collected data after detecting that the defibrillated energy signal is input, and stops the collection after the storage is completed. The voltage value of the defibrillation energy signal is the peak voltage. Starting from the detected defibrillation energy signal data, the maximum value of the collected data is found by the bubble sorting method, and then the defibrillation voltage value is calculated according to the AD conversion principle. The calculation of the defibrillation energy value is to convert the stored data into the corresponding voltage value according to the AD conversion principle, and calculate the defibrillation energy value according to the energy calculation formula. The energy calculation formula is as follows:

E=∑(U ² /R)×Δt

Among them, E is the energy value;

U is the voltage value, and the voltage value is obtained by calculating the collected AD value;

R is the impedance of the simulated human body;

Δt is the sampling time.

Working process of the present invention is:

The defibrillator under test has an analysis function, such as an automatic external defibrillator (AED). When the electrocardiographic analysis result is recommended for defibrillation, it can charge and release defibrillation energy. After the defibrillator analyzer is correctly connected to the defibrillator under test, it is necessary to set the defibrillator analyzer to output defibrillation ECG signals after starting up. The selection of the analog waveform output by the defibrillator analyzer can be set through the Set button and the Shift button on the control panel. After the defibrillator analyzer is turned on, the default display interface is the voltage energy display interface. Press the Set button to set the display interface to the selected waveform display interface. The default output analog waveform number is 0. Click the Shift button to switch the output analog waveform, click Add 1 to the serial number of the output analog waveform. After selecting the required output analog waveform, press the Set button to confirm the output of the analog waveform, and the display interface enters the voltage energy display interface at the same time. After the setting is completed, turn on the defibrillator under test and operate according to the defibrillator prompts. After the defibrillator releases the defibrillation energy, the defibrillator analyzer detects the defibrillation energy signal, searches for the maximum value of the collected data, and calculates the peak voltage. The energy value is calculated by the energy calculation formula.

The defibrillator under test can directly release the defibrillation shock, and the defibrillator analyzer does not need to set the output waveform. After the defibrillator under test is connected to the defibrillator analyzer, the defibrillator can directly release the shock energy, and then defibrillation The analyzer detects the electric shock energy signal and calculates the energy value and voltage value.

Analysis shows that compared with the prior art, advantages and beneficial effects of the present invention are:

1. The present invention adopts the STM32F103RE chip as the control main chip of the control module. The control chip replaces the hardware and uses components to realize energy calculation and analog waveform generation, which improves the calculation accuracy, simplifies the hardware circuit, reduces the volume of the equipment, and reduces the product manufacturing costs.

2. There are only three buttons on the control panel for control, which simplifies the functions of the existing defibrillator energy testing equipment and is easy to operate.

3. The defibrillator analyzer proposed by the present invention has a wider measurement range, and can realize the shock energy measurement of most defibrillators, including defibrillators with single-phase defibrillation waveform and biphasic defibrillation waveform output.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (10)

1. A kind of 1. defibrillator analyzer, it is characterised in that including：

   Electrode interface, the electrode interface are used to connect defibrillator to be measured；

   Acquisition Circuit, the input terminal of the Acquisition Circuit connect the electrode interface, and the Acquisition Circuit is used to obtain to be measured remove Quiver the defibrillation energy signal of device；

   Control module, the control module include STM32F103RE chips, and the control module is connected with the Acquisition Circuit, Defibrillation energy signal for the defibrillator to be measured for obtaining Acquisition Circuit transmission, storage energy signal data, calculates to be measured The magnitude of voltage and energy value of defibrillator, the control module also export PWM waveform；

   Filter circuit, the filter circuit are connected with the control module, and the filter circuit is used for the control module PWM waveform is filtered and forms analog waveform；The filter circuit is also connected with the electrode interface and by the electrode Interface exports analog waveform；

   Display module, the display module are connected with the control module, for showing defibrillator release defibrillation energy to be measured Magnitude of voltage and energy value, prompt electric quantity of power supply, the display waveform sequence number when exporting analog waveform.
2. 2. defibrillator analyzer according to claim 1, it is characterised in that further include：

   Control panel, user are controlled by control panel and run, and understand operating status by the prompt message on control panel；

   Four charactrons are equipped with the display module, three buttons are equipped with the control panel, the first button is to open Shut down ON/OFF buttons, and the second button is Set buttons, and the 3rd button is Shift buttons；First button, described second are pressed Key, the 3rd button are connected with the control module；

   Be additionally provided with the display module seven prompting indicator lights, including power supply indicator, battery capacity indicator light, warning refer to Show lamp, display energy indicator light, display voltage indicator lamp, Set key indicator lamps and Shift key indicator lamps.
3. 3. defibrillator analyzer according to claim 1 or 2, it is characterised in that further include：

   Power module, the power module are used for for the control module, the Acquisition Circuit, the filter circuit and described aobvious Show that module provides power supply energy.
4. 4. defibrillator analyzer according to claim 1 or 2, it is characterised in that further include：

   The first order protects circuit gas-discharge tube, first order protection circuit gas-discharge tube be installed on the filter circuit and Between the electrode interface；

   Circuit TVS diode is protected in the second level, and the second level protection circuit TVS diode is installed on the filter circuit and institute State between electrode interface；

   The first order protection circuit gas-discharge tube and second level protection circuit TVS diode are used to protect filter circuit In component.
5. 5. defibrillator analyzer according to claim 3, it is characterised in that：

   The control module also detects the electricity of the power module, and provides capacity prompt by the display module.
6. 6. defibrillator analyzer according to claim 1 or 2, it is characterised in that：

   The analog waveform that the filter circuit is formed includes sine wave, square wave, triangular wave, sinus rhythm, the auricular fibrillation rhythm of the heart, room Upper the property tachycardia rhythm of the heart and the Ventricular Tachycardia rhythm of the heart.
7. 7. defibrillator analyzer according to claim 1 or 2, it is characterised in that further include：

   Divider resistance, the divider resistance are placed between the Acquisition Circuit and the electrode interface, and the Acquisition Circuit passes through The voltage for gathering the divider resistance obtains defibrillation energy signal.
8. 8. defibrillator analyzer according to claim 1 or 2, it is characterised in that further include：

   Body impedance circuitry is simulated, the simulation body impedance circuitry is between the Acquisition Circuit and the electrode interface.
9. 9. defibrillator analyzer according to claim 8, it is characterised in that：

   The resistance value of the simulation body impedance circuitry is 50 Ω.
10. 10. defibrillator analyzer according to claim 1 or 2, it is characterised in that：

    After the control module has detected defibrillation energy signal, storage energy data, search maximum by bubbling method, calculate Crest voltage.Defibrillation energy value is calculated by energy balane formula, energy balane formula is as follows：

    E=∑s (U²/R)×Δt

    Wherein, E is energy value；

    U is magnitude of voltage；

    R is simulation human body impedance；

    Δ t is the sampling time.