CN202981993U - Performance test device for electrocardiogram (ECG) monitor - Google Patents
Performance test device for electrocardiogram (ECG) monitor Download PDFInfo
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- CN202981993U CN202981993U CN 201220570062 CN201220570062U CN202981993U CN 202981993 U CN202981993 U CN 202981993U CN 201220570062 CN201220570062 CN 201220570062 CN 201220570062 U CN201220570062 U CN 201220570062U CN 202981993 U CN202981993 U CN 202981993U
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Abstract
The utility model is suitable for the field of medical equipment and provides a performance test device for an ECG monitor. The performance test device comprises a programmable signal generator for generating ECG compound signals and standard signals and a signal generating circuit for generating function signal waves without power frequency interference, wherein the output end of the programmable signal generator and the output end of the signal generating circuit can be selectively connected with a detection-end cable of the ECG monitor. Standard signal requirements are satisfied through the ECG compound signals and the standard signals sent by the programmable signal generator, the ECG compound signals and the standard signals are input into the ECG monitor for performance test, the problems of complex means for generating the ECG compound signals and the standard signals and test processes are solved, and the signal generating circuit generates the function signals without the power frequency interference, so that the problem that test cannot be performed normally caused by the fact that power frequency interference exist during generating of waveforms originally is solved.
Description
Technical field
This utility model belongs to field of medical device, relates in particular to a kind of electrocardiogram monitor performance testing device.
Background technology
Electrocardiogram monitor is widely used in each section office of hospital, be used for monitoring patient vital sign parameter, assist medical personnel in time to understand the real-time situation of patient, for guaranteeing the accuracy of EGC parameter monitoring, be necessary very much to check by effective detection method the performance of cardiac monitoring.
Require the input decentraction to reply by cable in the application specific standard EC60601-2-27 of cardiac monitoring and GB9706.25 and close signal and standard signal, in to the electrocardiogram monitor process, also need electrocardio composite signal and standard signal are input in electrocardiogram monitor as test signal, because test signal is special, in present monitor testing process, the signal that the programmable signal generator that uses sends can not gather together electrocardio composite signal and standard signal, produce the needed method means of these two kinds of signals more loaded down with trivial details, make testing efficiency low.In addition, produce in test signal all with disturbing and cause test crash the power frequency that electrocardiogram monitor is tested.
The utility model content
The purpose of this utility model embodiment is to provide a kind of simple and reliable, electrocardiogram monitor performance testing device that efficient is high, is intended to solve existing test circuit and test process is comparatively loaded down with trivial details, test signal exists that power frequency is disturbed, the inefficiency problem.
This utility model embodiment realizes like this, a kind of electrocardiogram monitor performance testing device, be used for the performance test of electrocardiogram monitor, comprise: generate the programmable signal generator of electrocardio composite signal and standard signal and the signal generating circuit that generates the function signal ripple that disturbs without power frequency, the outfan of described programmable signal generator is connected outfan and optionally is connected with the test side cable of described electrocardiogram monitor with signal generating circuit.
In a preferred embodiment, described electrocardiogram monitor performance testing device also comprises described electrocardio composite signal and standard signal stack, and the electrocardio composite signal after superposeing, standard signal function signal wave dividing potential drop generate the attenuator circuit that the dividing potential drop electrocardiosignal outputs to described electrocardiogram monitor, the input of described attenuator circuit simultaneously and the outfan of described programmable signal generator be connected outfan with signal generating circuit and be connected, the outfan of described attenuator circuit is connected with the test side of electrocardio test circuit.
In a preferred embodiment, described electrocardiogram monitor performance testing device also comprises for the first single-pole double-throw switch (SPDT) of selecting whether described dividing potential drop electrocardiosignal to be polarized, be used for triggering with the second single-pole double-throw switch (SPDT) of described dividing potential drop electrocardiosignal polarization and polarizations unit, wherein
The input of described the first single-pole double-throw switch (SPDT) is connected with the outfan of described attenuator circuit, the first outfan is connected with the test side of described electrocardiogram monitor, the second outfan is connected with the outfan of described polarizations unit;
The input of described the second single-pole double-throw switch (SPDT) is connected with power supply, the first outfan is unsettled, the second outfan is connected with the power input of described polarizations unit, the input interlock of the input of described the first single-pole double-throw switch (SPDT) and described the second single-pole double-throw switch (SPDT);
The outfan of described polarizations unit is electrically connected to the test side of described electrocardiogram monitor, and described polarizations unit outputs to described electrocardiogram monitor after with described dividing potential drop electrocardiosignal polarization.
in a preferred embodiment, described attenuator circuit comprises the first attenuator circuit, the second attenuator circuit and divider resistance, described the first attenuator circuit be connected the input of attenuator circuit and all be connected with the outfan of described programmable signal generator, the outfan of described the first attenuator circuit and the second attenuator circuit is all through described divider resistance ground connection, described the first attenuator circuit, the second attenuator circuit be connected node that divider resistance the connects outfan as described attenuator circuit, described the first attenuator circuit, the second attenuator circuit and described divider resistance are with described electrocardio composite signal, standard signal and function signal superpose respectively and the described dividing potential drop electrocardiosignal of dividing potential drop generation is exported from described node.
In a preferred embodiment, described signal generating circuit comprises function signal generator, power supply circuits and the capacitance-resistance regulon that produces the adjustable and sine wave that amplitude is fixing of frequency, wherein,
Described power supply circuits comprise the first battery, and described the first battery provides required power supply for described function signal generator;
The output pin of described function signal generator is electrically connected to the input of described the first attenuator circuit;
The function signal wave frequency that described capacitance-resistance regulon is exported to change described function signal generator by the external capacitor, reference voltage and the input current that change described function signal generator.
In a preferred embodiment, described polarizations unit comprises voltage stabilizing output module, polarity selector, output resistance and polarity indicating module, wherein,
described voltage stabilizing output module is as described power supply, it comprises the second battery, the positive pole of described the second battery is connected with the input of described the second single-pole double-throw switch (SPDT), negative pole is connected with the negative input of described polarity selector, the second outfan of described the second single-pole double-throw switch (SPDT) is connected with the electrode input end of described polarity selector, described output resistance and polarity indicating module all are connected between the cathode output end and cathode output end of described polarity selector, and described output resistance first end is connected with the second outfan of described the first single-pole double-throw switch (SPDT), the second end is as the outfan of described polarizations unit, described polarity selector is used for selecting minute piezoelectric signal on described output resistance to carry out positive polarization or negative polarization,
Described polarity indicating module can be indicated the polarity of the polarizing voltage that increases.
In a preferred embodiment, described voltage stabilizing output module also comprises manostat, and the voltage input end of described manostat is connected with the second outfan of described the second single-pole double-throw switch (SPDT), voltage output end is connected with the electrode input end of described polarity selector.
In a preferred embodiment, described the first attenuator circuit comprises described the first input resistance, the first end of described the first input resistance and the second end are respectively as input and the outfan of the first attenuator circuit, described the second attenuator circuit comprises described the second input resistance, the first end of described the second input resistance and the second end are respectively as input and the outfan of the second attenuator circuit, and the resistance of described the first input resistance, the second input resistance and divider resistance is respectively 10
5Ohm, 910 ohm and 100 ohm.
In a preferred embodiment, the model of described function signal generator is MAX038.
above-mentioned electrocardiogram monitor performance testing device sends by the programmable signal generator signal demand that electrocardio composite signal and standard signal have satisfied standard-required, electrocardio composite signal and standard signal are input to electrocardiogram monitor carry out performance test, the means that produce electrocardio composite signal and standard signal have been overcome loaded down with trivial details, the problem of test process complexity, and the synchronous signal circuit for generating produce the function signal ripple that disturbs without power frequency overcome this waveform of original generation be with power frequency disturb and cause can't proper testing problem, realized simple and reliable, the electrocardiogram monitor performance test that efficient is high.
Description of drawings
Fig. 1 is the module frame chart of the electrocardiogram monitor performance testing device that provides of this utility model embodiment;
Fig. 2 is the modular structure figure of the electrocardiogram monitor performance testing device that provides of this utility model embodiment;
Fig. 3 is the circuit theory diagrams of the signal generating circuit that provides of this utility model embodiment;
Fig. 4 is the circuit theory diagrams of the attenuator circuit that provides of this utility model embodiment and polarizations unit;
Fig. 5 is the circuit theory diagrams of the attenuator circuit that provides of another embodiment of this utility model and polarizations unit.
The specific embodiment
In order to make the technical problems to be solved in the utility model, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, this utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining this utility model, and be not used in restriction this utility model.
as shown in Figure 1, it is the module frame chart of the electrocardiogram monitor performance testing device 100 in a preferred embodiment, electrocardiogram monitor performance testing device 100, be used for the performance test of electrocardiogram monitor 200, electrocardiogram monitor performance testing device 100 comprises the programmable signal generator 110 that generates electrocardio composite signal and standard signal and the signal generating circuit 120 that generates the function signal ripple that disturbs without power frequency, the outfan SIGNAL IN(that the outfan (not shown) of programmable signal generator 110 is connected with signal generating circuit is with reference to figure 3) optionally be connected with the test side (not shown) cable of electrocardiogram monitor 200.
above-mentioned electrocardiogram monitor performance detection tester sends by programmable signal generator 110 signal demand that electrocardio composite signal and standard signal have satisfied standard-required, electrocardio composite signal and standard signal are input to electrocardiogram monitor 200 carry out performance test, the means that produce electrocardio composite signal and standard signal have been overcome loaded down with trivial details, the problem of test process complexity, and synchronous signal circuit for generating 120 produce the function signal ripple that disturbs without power frequency overcome this waveform of original generation be with power frequency disturb and cause can't proper testing problem, realized simple and reliable, electrocardiogram monitor 200 performance tests that efficient is high.
As shown in Figure 1, be the module frame chart of the electrocardiogram monitor performance detection tester in embodiment.
In a preferred embodiment, electrocardiogram monitor performance testing device 100 also comprises attenuator circuit 130, attenuator circuit 130 is the stack of electrocardio composite signal and standard signal, and the electrocardio composite signal after superpose, standard signal function signal wave dividing potential drop generation dividing potential drop electrocardiosignal output to electrocardiogram monitor 200.The input of attenuator circuit 130 is connected with the outfan that the outfan of programmable signal generator 110 is connected with signal generating circuit simultaneously, the outfan of attenuator circuit 130 is connected with the test side of electrocardiogram monitor 200, and attenuator circuit 130 will be replied by cable and be closed signal, standard signal and function signal stack and dividing potential drop and generate the dividing potential drop electrocardiosignal and output to the detection test that electrocardiogram monitor 200 has realized electrocardiogram monitor 200.Are connected with signal generating circuit due to programmable signal generator 110 and are connected with electrocardiogram monitor 200 selectivitys, as can be known, when programmable signal generator 110 was connected with electrocardiogram monitor 200 by attenuator circuit 130, attenuator circuit 130 just produced the dividing potential drop electrocardiosignal with dividing potential drop after electrocardio composite signal and standard signal stack and outputs to electrocardiogram monitor 200; When signal generating circuit 120 was connected with electrocardiogram monitor 200 by attenuator circuit 130, attenuator circuit 130 just pressed the function signal wavelength-division generation dividing potential drop electrocardiosignal to output to electrocardiogram monitor 200.
In a preferred embodiment, electrocardiogram monitor performance testing device 100 also comprises for the first single-pole double-throw switch (SPDT) S31 that selects whether the dividing potential drop electrocardiosignal to be polarized, is used for triggering with the second single-pole double-throw switch (SPDT) S32 of dividing potential drop electrocardiosignal polarization and polarizations unit 140.
The input 1 of the first single-pole double-throw switch (SPDT) S31 is connected with the outfan of attenuator circuit 130, the first outfan 2 is connected with the test side of electrocardiogram monitor 200, the second outfan 3 is connected with the outfan of polarizations unit 140; The input 4 of the second single-pole double-throw switch (SPDT) S32 and power supply (figure is mark) are connected, the first outfan 5 is unsettled, the second outfan 6 is connected with the power input of polarizations unit 140, and the input 1 of the first single-pole double-throw switch (SPDT) S31 and the input of the second single-pole double-throw switch (SPDT) S32 4 link.
Due to input 3 interlocks of the input 1 of the first single-pole double-throw switch (SPDT) S31 and the second single-pole double-throw switch (SPDT) S32, when 1 dozen of the input of the first single-pole double-throw switch (SPDT) S31 is to its first outfan 2 so, 4 of the inputs of the second single-pole double-throw switch (SPDT) S32 are beaten to its first outfan 5,, dividing potential drop electrocardiosignal non-polarized, thus make unpolarized dividing potential drop electrocardiosignal be outputed to electrocardiogram monitor 200 by the direct outfan from electrocardiogram monitor performance testing device 100; 1 dozen of the input of the first single-pole double-throw switch (SPDT) is during to its second outfan 3, and 4 of the inputs of the second single-pole double-throw switch (SPDT) S32 are beaten to its second outfan 6, and, polarizations unit 140 will be activated the dividing potential drop electrocardiosignal is increased polarization.
The outfan of polarizations unit 140 is electrically connected to the test side of electrocardiogram monitor 200, and polarizations unit 140 outputs to electrocardiogram monitor 200 after with the polarization of dividing potential drop electrocardiosignal.In the present embodiment, the dividing potential drop electrocardiosignal that can utilize polarizations unit 140 that attenuator circuit 130 is exported increases positive polarization or negative polarization, specifically the stable DC component of series connection on the dividing potential drop electrocardiosignal.
as shown in Figure 2, in a preferred embodiment, attenuator circuit 130 comprises the first attenuator circuit 132, the second attenuator circuit 134 and divider resistance 136, the input of the first attenuator circuit 132 and the second attenuator circuit 134 is (as Fig. 4, CH1 shown in 5, CH2) all be connected with the outfan of programmable signal generator 110, the outfan of the first attenuator circuit 132 and the second attenuator circuit 134 is all through divider resistance 136 ground connection, the first attenuator circuit 132, the second attenuator circuit 134 is connected the node M that the connects outfan as attenuator circuit 130 with divider resistance, the first attenuator circuit 132, the second attenuator circuit 134 and divider resistance 136 are with the electrocardio composite signal, standard signal and function signal superpose respectively and dividing potential drop generation dividing potential drop electrocardiosignal is exported from node M.In the present embodiment, the first attenuator circuit 132, the second attenuator circuit 134 and divider resistance 136 form potential-divider network, programmable signal generator 110 is sent function signal ripple that electrocardio composite signal and standard signal and signal generating circuit 120 send carry out after dividing potential drop in outfan node M place's stack output of attenuator circuit 130, this moment, attenuator circuit 130 exported the dividing potential drop electrocardiosignal to electrocardiogram monitor 200 through the first single-pole double-throw switch (SPDT) S31.
In a preferred embodiment, signal generating circuit 120 comprises function signal generator 121, power supply circuits 122 and the capacitance-resistance regulon 124 that produces the adjustable and sine wave that amplitude is fixing of frequency.Preferably, with reference to figure 3, function signal generator 121 is that model is the chip U1 of MAX038, the waveform that chip U1 produces is the sine wave that frequency is adjustable and amplitude is fixing, in other embodiments, function signal generator 121 can be also other signal generator or integrated circuits that can send the function signal ripple.Signalization circuit for generating 120 has solved well because programmable signal generator 110 uses Alternating Current Power Supplies, disturbs with power frequency when sending the function signal ripple and the problem that causes testing electrocardiogram monitor 200.When namely needing to use the function signal ripple to electrocardiogram monitor 200 test, do not use the function signal ripple that programmable signal generator 110 exports and the function signal ripple that uses signal generating circuit 120 to produce tested electrocardiogram monitor 200.
In conjunction with Fig. 2, Fig. 3 and Fig. 4, power supply circuits 122 comprise the first battery BT1, and the first battery BT1 provides required power supply for function signal generator 121.The output pin OUT of function signal generator 121 is electrically connected to the input CH1 of the first attenuator circuit 132.The input CH1 of the first attenuator circuit 132 be connected the input CH2 of attenuator circuit 134 and all be connected with the outfan of programmable signal generator 110.As shown in Figure 3, in the present embodiment, power supply circuits 122 simultaneously and chip U1(function signal generator 121) positive supply input pin V+ be connected with negative supply input pin V-.Positive supply input pin V+, pin A0, pin A1, the pin DV+ of the positive pole of the first battery BT1 by positive voltage output voltage stabilizing chip MIC5205 and chip U1 is connected to chip U1 to be provided+5 volts of supply voltages; The negative supply input pin V-of the negative pole of the first battery BT1 by a negative voltage pio chip MIC1270-5BM5 and chip U1 is connected to chip U1 provides-5 volts of supply voltages.
The function signal wave frequency that capacitance-resistance regulon 124 is exported to change function signal generator 121 by the external capacitor, reference voltage and the input current that change function signal generator 121.in the present embodiment, with reference to figure 3, gears regulating switch S7 selects the resistance of different resistance values to be connected between the reference voltage pin REF and electric current input pin IIN of function signal generator 121 by resistance selection end B 10, gears regulating switch S7 selects the external capacitor pin COSC of the electric capacity access function signal generator 121 of different capacitances by capacitance selection end A10, reference voltage pin REF and the resistance value between electric current input pin IIN by adjustment function signal generator 121 are regulated the reference voltage of reference voltage pin REF and the input current of electric current input pin IIN with realization, finally realize the sinusoidal wave frequency that adjustment function signal generator 121 is exported.
In conjunction with Fig. 2 and Fig. 4, preferably, polarizations unit 140 also comprises voltage stabilizing output module 142, polarity selector 143, output resistance R3 and polarity indicating module 144.
Voltage stabilizing output module 142 comprises the second battery BT2 as power supply, the positive pole of the second battery BT2 is connected with the input 4 of the second single-pole double-throw switch (SPDT) S32, negative pole is connected with the negative input B of polarity selector 143, and the second outfan 6 of the second single-pole double-throw switch (SPDT) S32 is connected with the electrode input end A of polarity selector 143.
Output resistance R3 and polarity indicating module 144 all are connected between the cathode output end and cathode output end of polarity selector 143, and output resistance R3 first end is connected with the second outfan 3 of the first single-pole double-throw switch (SPDT) S 1, the second end is as the outfan of polarizations unit 140, and polarity selector 143 is used for selecting minute piezoelectric signal on output resistance R3 to carry out positive polarization or negative polarization; Polarity indicating module 144 can be indicated the polarity of the polarizing voltage that increases.
In the present embodiment, the electrode input end A of polarity selector 143 and negative input B interlock, and have the first cathode output end a1, the second unsettled cathode output end a2, the 3rd cathode output end a3 that is connected with the first end of output resistance R3, the first cathode output end b1 that is connected with the first end of output resistance R3, the second unsettled cathode output end b2 and the 3rd cathode output end b3 that is connected with the second end of output resistance R3 that is connected with the second end of output resistance R3.In the time of need to increasing polarization to the dividing potential drop electrocardiosignal, attenuator circuit 130 outputs to the dividing potential drop electrocardiosignal first end of output resistance R3, and direct current of voltage regulation of voltage stabilizing output module 142 outputs, utilize polarity selector 143 to select the dividing potential drop electrocardiosignal is carried out positive polarization or negative polarization, when the electrode input end A of polarity selector 143 be allocated to the first cathode output end a1, when negative input B will be allocated to the first cathode output end b1, polarizations 140 pairs of unit dividing potential drop electrocardiosignal negative polarization; And when the electrode input end A of polarity selector 143 be allocated to the 3rd cathode output end a3, when negative input B will be allocated to b3, polarizations 140 pairs of unit dividing potential drop electrocardiosignal positive polarization.In other embodiments, the second battery BT2 and the first battery BT1 are same.
Preferably, with reference to figure 5, voltage stabilizing output module 142 also comprises manostat U6, and the voltage input end IN of manostat U6 is connected with the second outfan 6 of the second single-pole double-throw switch (SPDT) S32, voltage output end OUT is connected with the electrode input end A of polarity selector 143.In the present embodiment, the model of manostat U6 is MIC5205.Can be also other voltage regulator chip in other embodiments.Be understandable that, when the second battery BT2 output voltage stabilization in voltage stabilizing output module 142, manostat U6 can omit, as shown in Fig. 4 (A).
In preferred embodiment, as shown in Fig. 4,5, the first attenuator circuit 132 comprises the first input resistance R1, the first end of the first input resistance R1 and the second end are respectively as input CH1 and the outfan of the first attenuator circuit 132, the second attenuator circuit 134 comprises the second input resistance R2, as input CH2 and the outfan of the second attenuator circuit 134, the resistance of the first input resistance R1, the second input resistance R2 and divider resistance 136 is respectively 10 respectively for the first end of the second input resistance R2 and the second end
5Ohm, 910 ohm and 100 ohm.Wherein divider resistance 136 comprises the different resistance resistors that can utilize driving switch S6 to select, as 200 ohm, 25K ohm, 10
5Ohm etc., thus make divider resistance 136 form different dividing potential drop ratios from the first input resistance R1 and the second input resistance R2.
In a preferred embodiment, as shown in Fig. 3,4, electrocardiogram monitor performance testing device 100 also comprises the input impedance regulating circuit 150 between the input 1 of the outfan M that is connected to attenuator circuit 130 and the first single-pole double-throw switch (SPDT) S31, and input impedance regulating circuit 150 comprises regulating resistance R4 between the input 1 of the outfan M that is connected to attenuator circuit 130 and the first single-pole double-throw switch (SPDT) S31, equal control capacittance C1 and switch S 1 in parallel with regulating resistance R4.When carrying out the electrocardiogram monitor performance test, when not needing to carry out the input impedance adjusting, this switch S 1 is closed, in the time of need to carrying out the input impedance adjusting, switch S 1 need to be disconnected, regulating resistance R4 and control capacittance C1 are increased in circuit, realize the adjusting of test input impedance.
In a preferred embodiment, P1, the P3 in Fig. 4 (A), P4, P5, P6, P7, P8 lead wire are used for the internal component Performance Detection for detecting lead-in wire.
In Fig. 4 (A), the outfan LA of electrocardio test circuit 100 with is connected a test lead RL with electrocardiogram monitor 200 port J13(as shown in Fig. 4 (B)) respective pins LA, RL be connected, and electrocardiogram monitor 200 port J13 with port J14(as shown in Fig. 4 (C)) in other pin respectively with Fig. 4 (D), (E) and the RC resistance-capacitance network (F) connect, the RC resistance-capacitance network in Fig. 4 (D), Fig. 4 (E) and Fig. 4 (F) is used for contact simulation human body skin signal to electrocardiogram monitor 200 test the time.
Illustrate that with preferred embodiment the operation principle of electrocardiogram monitor performance testing device 100 describes below in conjunction with Fig. 3 and Fig. 4.
When needs use the function signal ripple to detect test to electrocardiogram monitor 200, the function signal ripple that provides due to the programmable signal generator 110 with Alternating Current Power Supply exists the power frequency interference to cause and can't test electrocardiogram monitor 200, and signal generating circuit 120 can provide glitch-free sine wave, solved the problems referred to above, the function signal ripple that signal generating circuit 120 can utilize 124 pairs of signal generating circuits 120 of capacitance-resistance regulon to export carries out frequency modulation.
The above is only preferred embodiment of the present utility model; not in order to limit this utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (9)
1. electrocardiogram monitor performance testing device, be used for the performance test of electrocardiogram monitor, it is characterized in that, comprise: generate the programmable signal generator of electrocardio composite signal and standard signal and the signal generating circuit that generates the function signal ripple that disturbs without power frequency, the outfan of described programmable signal generator is connected outfan and optionally is connected with the test side cable of described electrocardiogram monitor with signal generating circuit.
2. electrocardiogram monitor performance testing device as claimed in claim 1, it is characterized in that, described electrocardiogram monitor performance testing device also comprises described electrocardio composite signal and standard signal stack, and the electrocardio composite signal after superposeing, standard signal function signal wave dividing potential drop generate the attenuator circuit that the dividing potential drop electrocardiosignal outputs to described electrocardiogram monitor, the input of described attenuator circuit simultaneously and the outfan of described programmable signal generator be connected outfan with signal generating circuit and be connected, the outfan of described attenuator circuit is connected with the test side of electrocardio test circuit.
3. electrocardiogram monitor performance testing device as claimed in claim 2, it is characterized in that, described electrocardiogram monitor performance testing device also comprises for the first single-pole double-throw switch (SPDT) of selecting whether described dividing potential drop electrocardiosignal to be polarized, be used for triggering with the second single-pole double-throw switch (SPDT) of described dividing potential drop electrocardiosignal polarization and polarizations unit, wherein
The input of described the first single-pole double-throw switch (SPDT) is connected with the outfan of described attenuator circuit, the first outfan is connected with the test side of described electrocardiogram monitor, the second outfan is connected with the outfan of described polarizations unit;
The input of described the second single-pole double-throw switch (SPDT) is connected with power supply, the first outfan is unsettled, the second outfan is connected with the power input of described polarizations unit, the input interlock of the input of described the first single-pole double-throw switch (SPDT) and described the second single-pole double-throw switch (SPDT);
The outfan of described polarizations unit is electrically connected to the test side of described electrocardiogram monitor, and described polarizations unit outputs to described electrocardiogram monitor after with described dividing potential drop electrocardiosignal polarization.
4. electrocardiogram monitor performance testing device as claimed in claim 2, it is characterized in that, described attenuator circuit comprises the first attenuator circuit, the second attenuator circuit and divider resistance, described the first attenuator circuit be connected the input of attenuator circuit and all be connected with the outfan of described programmable signal generator, the outfan of described the first attenuator circuit and the second attenuator circuit is all through described divider resistance ground connection, described the first attenuator circuit, the second attenuator circuit be connected node that divider resistance the connects outfan as described attenuator circuit, described the first attenuator circuit, the second attenuator circuit and described divider resistance are with described electrocardio composite signal, standard signal and function signal superpose respectively and the described dividing potential drop electrocardiosignal of dividing potential drop generation is exported from described node.
5. electrocardiogram monitor performance testing device as claimed in claim 4, is characterized in that, described signal generating circuit comprises function signal generator, power supply circuits and the capacitance-resistance regulon that produces the adjustable and sine wave that amplitude is fixing of frequency, wherein,
Described power supply circuits comprise the first battery, and described the first battery provides required power supply for described function signal generator;
The output pin of described function signal generator is electrically connected to the input of described the first attenuator circuit;
The function signal wave frequency that described capacitance-resistance regulon is exported to change described function signal generator by the external capacitor, reference voltage and the input current that change described function signal generator.
6. electrocardiogram monitor performance testing device as claimed in claim 3, is characterized in that, described polarizations unit comprises voltage stabilizing output module, polarity selector, output resistance and polarity indicating module, wherein,
Described voltage stabilizing output module is as described power supply, it comprises the second battery, the positive pole of described the second battery is connected with the input of described the second single-pole double-throw switch (SPDT), negative pole is connected with the negative input of described polarity selector, and the second outfan of described the second single-pole double-throw switch (SPDT) is connected with the electrode input end of described polarity selector;
Described output resistance and polarity indicating module all are connected between the cathode output end and cathode output end of described polarity selector, and described output resistance first end is connected with the second outfan of described the first single-pole double-throw switch (SPDT), the second end is as the outfan of described polarizations unit, and described polarity selector is used for selecting minute piezoelectric signal on described output resistance to carry out positive polarization or negative polarization;
Described polarity indicating module can be indicated the polarity of the polarizing voltage that increases.
7. electrocardiogram monitor performance testing device as claimed in claim 6, it is characterized in that, described voltage stabilizing output module also comprises manostat, and the voltage input end of described manostat is connected with the second outfan of described the second single-pole double-throw switch (SPDT), voltage output end is connected with the electrode input end of described polarity selector.
8. electrocardiogram monitor performance testing device as claimed in claim 4, it is characterized in that, described the first attenuator circuit comprises the first input resistance, the first end of described the first input resistance and the second end are respectively as input and the outfan of the first attenuator circuit, described the second attenuator circuit comprises described the second input resistance, the first end of described the second input resistance and the second end are respectively as input and the outfan of the second attenuator circuit, and the resistance of described the first input resistance, the second input resistance and divider resistance is respectively 10
5Ohm, 910 ohm and 100 ohm.
9. electrocardiogram monitor performance testing device as claimed in claim 5, is characterized in that, the model of described function signal generator is MAX038.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201220570062 CN202981993U (en) | 2012-11-01 | 2012-11-01 | Performance test device for electrocardiogram (ECG) monitor |
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| CN 201220570062 CN202981993U (en) | 2012-11-01 | 2012-11-01 | Performance test device for electrocardiogram (ECG) monitor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105559773A (en) * | 2015-12-12 | 2016-05-11 | 中国计量学院 | Special signal generator for medical treadmill exercise calibration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105559773A (en) * | 2015-12-12 | 2016-05-11 | 中国计量学院 | Special signal generator for medical treadmill exercise calibration |
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