CN104000582A - Lead falling detection device for electrocardiogram monitoring device - Google Patents
Lead falling detection device for electrocardiogram monitoring device Download PDFInfo
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- CN104000582A CN104000582A CN201410183488.6A CN201410183488A CN104000582A CN 104000582 A CN104000582 A CN 104000582A CN 201410183488 A CN201410183488 A CN 201410183488A CN 104000582 A CN104000582 A CN 104000582A
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- operational amplifier
- adjustable resistance
- outfan
- monitoring device
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Abstract
The invention relates to a lead falling detection device for an electrocardiogram monitoring device. The lead falling detection device comprises a differential amplification circuit formed by a first operational amplifier OP1, a window comparator circuit formed by a second operational amplifier OP2, a third operational amplifier OP3, a first adjustable resistor RW1, a second adjustable resistor RW2, a first diode D1 and a second diode D2 and an alarm circuit formed by a third adjustable resistor RW3, a light emitting diode D3 and an AND gate G1. By means of the lead falling detection device, a pre-amplification voltage is amplified by the differential amplification circuit to be input into a window comparator, and when the voltage is beyond of the window scope of the window comparator, it is considered that an electrode falls, the level output by the window comparator is changed from the normal high level to the low level, and the alarm circuit is accordingly driven to generate an alarm signal. The lead falling detection device is simple in structure, reliable and convenient to use and capable of rapidly judging lead falling and giving an alarm and the diagnosis reliability of the electrocardiogram monitoring device is accordingly guaranteed.
Description
Technical field
The present invention relates to medical weak biological electrical signal collection detection technique field, specifically a kind of checkout gear that comes off that leads for electrocardiograph monitoring device.
Background technology
At present, electrocardiogram monitor is the classical conventional instrument that hospital is generally used, it mainly comprises ecg signal acquiring circuit, pre-amplification circuit and follow-up electrocardiosignal treatment circuit, use safety, can be in real time, accurately, the variation of the basic electric-physiology parameter of detection of dynamic patient for a long time, and can record exactly and analyze, for treating and rescue to provide effectively, medical personnel help.
But patient likely leads loosening and comes off when using electrocardiogram monitor, this will introduce very large interference, cause ecg wave form distortion, make ECG monitor terminal be difficult to export actual waveform, thereby cause the false judgment to electrocardiosignal, affect diagnostic result.
Summary of the invention
For above-mentioned deficiency, the invention provides a kind of checkout gear that comes off that leads for electrocardiograph monitoring device, it can judge fast to lead and come off and report to the police, thereby guarantees the reliability of electrocardiograph monitoring device diagnostic result.
The technical solution adopted for the present invention to solve the technical problems is: a kind of checkout gear that comes off that leads for electrocardiograph monitoring device, it is characterized in that, comprise differential amplifier circuit, window comparator circuit and warning circuit, the input of described differential amplifier circuit is connected with the outfan of the pre-amplification circuit of electrocardiograph monitoring device, outfan is connected with the input of window comparator circuit, and the outfan of described window comparator circuit is connected with warning circuit.
Further, of the present invention a kind of for leading of electrocardiograph monitoring device come off checkout gear comprise the first operational amplifier OP1, the second operational amplifier OP2, the 3rd operational amplifier OP3, the first adjustable resistance RW1, the second adjustable resistance RW2, the 3rd adjustable resistance RW3, the first diode D1, the second diode D2, light emitting diode D3 and with door G1; The outfan of described the first positive input of operational amplifier OP1 and the pre-amplification circuit of electrocardiograph monitoring device is connected, and outfan is connected with the reverse input end of the 3rd operational amplifier OP3 with the reverse input end of the first operational amplifier OP1, the positive input of the second operational amplifier OP2 respectively; The positive input of the reverse input end of the second operational amplifier OP2 and the 3rd operational amplifier OP3 is connected with the adjustable end of the second adjustable resistance RW2 with the adjustable end of the first adjustable resistance RW1 respectively, described the first adjustable resistance RW1 and the second adjustable resistance RW2 form series circuit, and series circuit two ends connect respectively generating positive and negative voltage and be connected with isoelectric level between the first adjustable resistance RW1 and the second adjustable resistance RW2; The outfan of the outfan of the second operational amplifier OP2 and the 3rd operational amplifier OP3 first diode D1 that connects is respectively connected with one end of the 3rd adjustable resistance RW3 with after the second diode D2; The other end of described the 3rd adjustable resistance RW3 connects isoelectric level, adjustable end be connected with the input of door G1, the described light emitting diode D3 that connects with the outfan of a G1.
Preferably, outfan described and door G1 is also in series with buzzer, and described buzzer is connected with light emitting diode D3.
Preferably, the first described operational amplifier OP1, the second operational amplifier OP2 and the 3rd operational amplifier OP3 all adopt LM324 integrated circuit.
Preferably, described and door G1 adopts a SN74F08D chip.
The present invention has following outstanding beneficial effect: under normal circumstances, the polarizing voltage that the positive and negative electrode of electrocardiograph monitoring device forms human body skin can be cancelled out each other, when a lateral electrode comes off, larger polarizing voltage input will be had, the voltage range of voltage after preposition amplification when considerably beyond normal connect, therefore, first by differential amplifier circuit, the voltage after to preposition amplification amplifies rear input window comparator in the present invention, when voltage exceeds the window ranges of window comparator, think that generating electrodes comes off, the high level of window comparator output level when normal becomes low level, thereby drive warning circuit to produce alarm signal.The present invention is simple in structure, easy to use and reliable, and can judge fast leads comes off and reports to the police, thereby guarantees the reliability of electrocardiograph monitoring device diagnostic result.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described:
Fig. 1 is schematic circuit of the present invention.
The specific embodiment
As shown in Figure 1, of the present invention
The outfan of described the first positive input of operational amplifier OP1 and the pre-amplification circuit of electrocardiograph monitoring device is connected, and outfan is connected with the reverse input end of the 3rd operational amplifier OP3 with the reverse input end of the first operational amplifier OP1, the positive input of the second operational amplifier OP2 respectively; The positive input of the reverse input end of the second operational amplifier OP2 and the 3rd operational amplifier OP3 is connected with the adjustable end of the second adjustable resistance RW2 with the adjustable end of the first adjustable resistance RW1 respectively, described the first adjustable resistance RW1 and the second adjustable resistance RW2 form series circuit, and series circuit two ends connect respectively generating positive and negative voltage and be connected with isoelectric level between the first adjustable resistance RW1 and the second adjustable resistance RW2; The outfan of the outfan of the second operational amplifier OP2 and the 3rd operational amplifier OP3 first diode D1 that connects is respectively connected with one end of the 3rd adjustable resistance RW3 with after the second diode D2; The other end of described the 3rd adjustable resistance RW3 connects isoelectric level, adjustable end be connected with the input of door G1, the described light emitting diode D3 that connects with the outfan of a G1.Wherein, the first described operational amplifier OP1, the second operational amplifier OP2 and the 3rd operational amplifier OP3 all adopt LM324 integrated circuit, and described and door G1 adopts a SN74F08D chip.
Further, a kind of checkout gear that comes off that leads for electrocardiograph monitoring device shown in Fig. 1, outfan described and door G1 is also in series with buzzer, in order to report to the police by sound.
It should be noted that illustrated parts are not necessarily drawn in proportion in the accompanying drawings.The present invention has omitted the description of known assemblies and treatment technology and technique to avoid unnecessarily limiting the present invention.
The above is the preferred embodiment of the present invention, for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, and these improvements and modifications are also regarded as protection scope of the present invention.
Claims (5)
1. the checkout gear that comes off that leads for electrocardiograph monitoring device, it is characterized in that, comprise differential amplifier circuit, window comparator circuit and warning circuit, the input of described differential amplifier circuit is connected with the outfan of the pre-amplification circuit of electrocardiograph monitoring device, outfan is connected with the input of window comparator circuit, and the outfan of described window comparator circuit is connected with warning circuit.
2. a kind of checkout gear that comes off that leads for electrocardiograph monitoring device according to claim 1, it is characterized in that, comprise the first operational amplifier OP1, the second operational amplifier OP2, the 3rd operational amplifier OP3, the first adjustable resistance RW1, the second adjustable resistance RW2, the 3rd adjustable resistance RW3, the first diode D1, the second diode D2, light emitting diode D3 and with door G1; The outfan of described the first positive input of operational amplifier OP1 and the pre-amplification circuit of electrocardiograph monitoring device is connected, and outfan is connected with the reverse input end of the 3rd operational amplifier OP3 with the reverse input end of the first operational amplifier OP1, the positive input of the second operational amplifier OP2 respectively; The positive input of the reverse input end of the second operational amplifier OP2 and the 3rd operational amplifier OP3 is connected with the adjustable end of the second adjustable resistance RW2 with the adjustable end of the first adjustable resistance RW1 respectively, described the first adjustable resistance RW1 and the second adjustable resistance RW2 form series circuit, and series circuit two ends connect respectively generating positive and negative voltage and be connected with isoelectric level between the first adjustable resistance RW1 and the second adjustable resistance RW2; The outfan of the outfan of the second operational amplifier OP2 and the 3rd operational amplifier OP3 first diode D1 that connects is respectively connected with one end of the 3rd adjustable resistance RW3 with after the second diode D2; The other end of described the 3rd adjustable resistance RW3 connects isoelectric level, adjustable end be connected with the input of door G1, the described light emitting diode D3 that connects with the outfan of a G1.
3. a kind of checkout gear that comes off that leads for electrocardiograph monitoring device according to claim 2, is characterized in that, outfan described and door G1 is also in series with buzzer, and described buzzer is connected with light emitting diode D3.
4. according to a kind of checkout gear that comes off that leads for electrocardiograph monitoring device described in claim 2 or 3, it is characterized in that, the first described operational amplifier OP1, the second operational amplifier OP2 and the 3rd operational amplifier OP3 all adopt LM324 integrated circuit.
5. according to a kind of checkout gear that comes off that leads for electrocardiograph monitoring device described in claim 2 or 3, it is characterized in that, described and door G1 adopts a SN74F08D chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410183488.6A CN104000582A (en) | 2014-05-04 | 2014-05-04 | Lead falling detection device for electrocardiogram monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410183488.6A CN104000582A (en) | 2014-05-04 | 2014-05-04 | Lead falling detection device for electrocardiogram monitoring device |
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| CN104000582A true CN104000582A (en) | 2014-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410183488.6A Pending CN104000582A (en) | 2014-05-04 | 2014-05-04 | Lead falling detection device for electrocardiogram monitoring device |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105496400A (en) * | 2016-03-01 | 2016-04-20 | 张胜国 | Portable multilead wireless electrocardiogram monitoring apparatus and method |
| CN105534492A (en) * | 2015-11-30 | 2016-05-04 | 张胜国 | Intelligent human body sign mobile phone monitoring system |
| CN106093774A (en) * | 2016-08-31 | 2016-11-09 | 贵州贵航汽车零部件股份有限公司华阳电器公司 | A kind of switch detection circuit |
| CN106301336A (en) * | 2016-09-10 | 2017-01-04 | 苏州创必成电子科技有限公司 | Input data validity testing circuit with threshold values numerical control |
| CN106301335A (en) * | 2016-09-10 | 2017-01-04 | 苏州创必成电子科技有限公司 | Input data validity testing circuit with on-off control |
| CN106341113A (en) * | 2016-09-10 | 2017-01-18 | 苏州创必成电子科技有限公司 | Input data validity detection circuit with intelligent numerical control |
| CN106341111A (en) * | 2016-09-10 | 2017-01-18 | 苏州创必成电子科技有限公司 | Multiple-input data state parallel detection circuit with intelligent numerical control |
| CN106341114A (en) * | 2016-09-10 | 2017-01-18 | 苏州创必成电子科技有限公司 | Input data state detection circuit |
| CN106341115A (en) * | 2016-09-10 | 2017-01-18 | 苏州创必成电子科技有限公司 | Multiple-input data state parallel detection circuit with threshold-value numerical control |
| CN106341112A (en) * | 2016-09-10 | 2017-01-18 | 苏州创必成电子科技有限公司 | Input data state detection circuit with intelligent numerical control |
| CN106357260A (en) * | 2016-09-10 | 2017-01-25 | 苏州创必成电子科技有限公司 | Multi-input-data-state parallel detecting circuit |
| CN106452419A (en) * | 2016-09-10 | 2017-02-22 | 苏州创必成电子科技有限公司 | Input data state detection circuit with switch control |
| CN106618557A (en) * | 2016-10-19 | 2017-05-10 | 深圳市杰纳瑞医疗仪器股份有限公司 | Induction type electrocardio probe and device |
| CN106821366A (en) * | 2015-10-14 | 2017-06-13 | 张胜国 | Intelligent cardiac monitor system |
| CN109581233A (en) * | 2018-12-29 | 2019-04-05 | 武汉理工大学 | Detect the device and its control method of the positive and negative monolithic voltage of fuel cell |
| CN109975878A (en) * | 2017-12-27 | 2019-07-05 | 四川锦江电子科技有限公司 | It falls off the device and method of detection for three-dimensional mapping system body surface excitation electrode slice |
| CN110255118A (en) * | 2019-06-04 | 2019-09-20 | 仵军红 | A kind of food inspection transmission device with screening function |
| CN111208451A (en) * | 2018-11-22 | 2020-05-29 | 深圳迈瑞生物医疗电子股份有限公司 | Electrocardio lead falling detection circuit and method and medical monitoring equipment |
| CN117770824A (en) * | 2023-11-30 | 2024-03-29 | 苏州泽声微电子有限公司 | ECG shedding detection method |
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Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106821366A (en) * | 2015-10-14 | 2017-06-13 | 张胜国 | Intelligent cardiac monitor system |
| CN105534492A (en) * | 2015-11-30 | 2016-05-04 | 张胜国 | Intelligent human body sign mobile phone monitoring system |
| CN105496400A (en) * | 2016-03-01 | 2016-04-20 | 张胜国 | Portable multilead wireless electrocardiogram monitoring apparatus and method |
| CN106093774A (en) * | 2016-08-31 | 2016-11-09 | 贵州贵航汽车零部件股份有限公司华阳电器公司 | A kind of switch detection circuit |
| CN106093774B (en) * | 2016-08-31 | 2019-08-06 | 贵州贵航汽车零部件股份有限公司华阳电器公司 | A kind of switch detection circuit |
| CN106357260A (en) * | 2016-09-10 | 2017-01-25 | 苏州创必成电子科技有限公司 | Multi-input-data-state parallel detecting circuit |
| CN106301336A (en) * | 2016-09-10 | 2017-01-04 | 苏州创必成电子科技有限公司 | Input data validity testing circuit with threshold values numerical control |
| CN106341114A (en) * | 2016-09-10 | 2017-01-18 | 苏州创必成电子科技有限公司 | Input data state detection circuit |
| CN106341115A (en) * | 2016-09-10 | 2017-01-18 | 苏州创必成电子科技有限公司 | Multiple-input data state parallel detection circuit with threshold-value numerical control |
| CN106341112A (en) * | 2016-09-10 | 2017-01-18 | 苏州创必成电子科技有限公司 | Input data state detection circuit with intelligent numerical control |
| CN106341113A (en) * | 2016-09-10 | 2017-01-18 | 苏州创必成电子科技有限公司 | Input data validity detection circuit with intelligent numerical control |
| CN106452419A (en) * | 2016-09-10 | 2017-02-22 | 苏州创必成电子科技有限公司 | Input data state detection circuit with switch control |
| CN106301335A (en) * | 2016-09-10 | 2017-01-04 | 苏州创必成电子科技有限公司 | Input data validity testing circuit with on-off control |
| CN106341111A (en) * | 2016-09-10 | 2017-01-18 | 苏州创必成电子科技有限公司 | Multiple-input data state parallel detection circuit with intelligent numerical control |
| CN106618557A (en) * | 2016-10-19 | 2017-05-10 | 深圳市杰纳瑞医疗仪器股份有限公司 | Induction type electrocardio probe and device |
| CN109975878A (en) * | 2017-12-27 | 2019-07-05 | 四川锦江电子科技有限公司 | It falls off the device and method of detection for three-dimensional mapping system body surface excitation electrode slice |
| CN111208451A (en) * | 2018-11-22 | 2020-05-29 | 深圳迈瑞生物医疗电子股份有限公司 | Electrocardio lead falling detection circuit and method and medical monitoring equipment |
| CN111208451B (en) * | 2018-11-22 | 2023-12-12 | 深圳迈瑞生物医疗电子股份有限公司 | Electrocardiogram lead falling detection circuit, method and medical monitoring equipment |
| CN109581233A (en) * | 2018-12-29 | 2019-04-05 | 武汉理工大学 | Detect the device and its control method of the positive and negative monolithic voltage of fuel cell |
| CN109581233B (en) * | 2018-12-29 | 2024-03-15 | 武汉理工大学 | Device for detecting positive and negative monolithic voltages of fuel cell and control method thereof |
| CN110255118A (en) * | 2019-06-04 | 2019-09-20 | 仵军红 | A kind of food inspection transmission device with screening function |
| CN110255118B (en) * | 2019-06-04 | 2021-01-05 | 仵军红 | Food detection and conveying device with screening function |
| CN117770824A (en) * | 2023-11-30 | 2024-03-29 | 苏州泽声微电子有限公司 | ECG shedding detection method |
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Application publication date: 20140827 |
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