CN203154598U - Electrode contact loss detection circuit and pace-making circuit - Google Patents
Electrode contact loss detection circuit and pace-making circuit Download PDFInfo
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- CN203154598U CN203154598U CN 201320147176 CN201320147176U CN203154598U CN 203154598 U CN203154598 U CN 203154598U CN 201320147176 CN201320147176 CN 201320147176 CN 201320147176 U CN201320147176 U CN 201320147176U CN 203154598 U CN203154598 U CN 203154598U
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Abstract
The utility model provides an electrode contact loss detection circuit and a pace-making circuit. The electrode contact loss detection circuit is characterized by comprising a first power supply, a first resistor, a second power supply, a first comparator and a processor. The first power supply is respectively connected on the first input end of the first comparator and an electrode loop through the first resistor. The second power supply is connected on the second input end of the first comparator. The processor which is connected with the output end of the first comparator is used for judging whether the electrode undergoes a contact loss or not according to the output of the first comparator. Compared with the prior art, the electrode contact loss detection circuit and the pace-making circuit make use of the comparator and the processor for judgment. The circuit structure is simplified. Meanwhile, the processor is not required to acquire large amounts of data. The judging efficiency is increased. The working efficiency of the processor is also enhanced.
Description
Technical field
This utility model relates to technical field of medical instruments, relates in particular to a kind of electrode come off testing circuit and pace-making circuit.
Background technology
In the medical field existing electrode (perhaps leading) come off main a kind of of judgment technology be in extra sinusoidal signal of AFE (analog front end) coupling on the AFE (analog front end) input channel, the amplitude of this sinusoidal signal becomes very little and is the common mode input on each electrode (perhaps leading) passage, and this sinusoidal signal becomes fainter after the difference; When electrode (perhaps leading) is correct the access, it is known to be used for the come off sinusoidal signal amplitude judged of electrode (perhaps leading) on the input channel of this electrode (perhaps leading), amplify, use after the analog digital conversion method such as software digital filter to obtain this sinusoidal signal in difference, by MCU(Micro Control Unit, microprocessor) according to the amplitude of this signal size or whether be that sinusoidal signal is judged electrode (the perhaps leading) state that comes off.In order to realize that multi-electrode (perhaps leading) is when coming off, need to adopt multichannel to cushion prime signal and multi-channel A/D(mould/number simultaneously) transducer, the circuit more complicated, therefore, need sample at short notice mass data and handling of MCU has consumed the MCU resource too much.And front stage circuits is more complicated also.
The utility model content
This utility model is in order to solve circuit complicated technology problem in the prior art, and a kind of electrode testing circuit that comes off is provided, and a kind of pace-making circuit also is provided simultaneously.
Specific as follows: a kind of electrode testing circuit that comes off, wherein, comprise first power supply, first resistance, second source, first comparator and processor, described first power supply is connected in the first input end and electrode loop of described first comparator by first resistance, described second source is connected in second input of described first comparator, and described processor is connected with the outfan of described first comparator and is used for judging according to the output of described first comparator whether described electrode comes off.
Further, also comprise amplitude limiter circuit, described amplitude limiter circuit is connected between described first resistance and the described electrode loop.
Further, also comprise discharge tube, an end of described discharge tube is connected between described amplitude limiter circuit and the described electrode loop, other end ground connection.
Further, described amplitude limiter circuit comprises the 3rd power supply, first diode and second diode, the negative pole of described first diode links to each other with the positive output of described the 3rd power supply, the positive and negative connection of described first, second diode, the plus earth of described second diode, described first resistance are connected in described first, second diode junction.
Further, described processor judges according to input trailing edge or rising edge whether electrode comes off.
This utility model embodiment also provides a kind of pace-making circuit.This pace-making circuit comprises electrode loop and the above-mentioned electrode testing circuit that comes off, described electrode loop comprises pacing controller, the 4th power supply, first switching tube, the second switch pipe, second comparator and second resistance, described the 4th power supply, first switching tube, electrode, the second switch pipe, second resistance and ground connect successively, the outfan of described second comparator is connected with the control end of described second switch pipe, the first input end of described second comparator is connected between described second resistance and the described second switch pipe, second input of described second comparator is connected with described pacing controller, described pacing controller also is connected with described first control end of switching tube, and the described electrode testing circuit that comes off is connected between described first switching tube and the described electrode.
Further, also comprise the 5th power supply and the 3rd switching tube, described pacing controller is connected with described first control end of switching tube by described the 3rd switching tube, described pacing controller is connected with described the 3rd control end of switching tube, and the other two ends of described the 3rd switching tube are connected with ground with described the 5th power supply respectively.
Further, the 3rd resistance, the 3rd diode and first electric capacity are connected in parallel on the two ends of the non-control end of described first switching tube behind described the 3rd resistance and described first capacitance series, and described the 3rd diode is connected in parallel on the two ends of described the 3rd resistance.
Further, described the 4th power source voltage greater than 24V less than 500V.
Further, also comprise relay, the switch terminals of described relay is connected in the described electrode loop, and the control end of described relay is connected with described pacing controller.
Beneficial effect: with respect to prior art, come off testing circuit and pace-making circuit of electrode of the present utility model utilizes comparator and processor to judge, simplify circuit structure, and processor do not need to gather mass data yet, improved the work efficiency of judging efficiency and processor.
Description of drawings
Fig. 1 is the electrode of this utility model embodiment testing circuit structural representation that comes off.
Fig. 2 is the pace-making electrical block diagram of this utility model embodiment.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage 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.
The come off core concept of testing circuit of electrode of the present utility model is not utilize sinusoidal signal to judge whether electrode comes off, but utilize comparator and processor to judge, simplify circuit structure, and processor does not need to gather mass data yet, has improved the work efficiency of judging efficiency and processor.The electrode of the present utility model testing circuit that comes off can be applied to a lot of occasions, for example in pacemaker, defibrillator etc. medical apparatus and instruments, certainly, also can be applied in the electrical type application scenario of some other needs.The electrode of this utility model embodiment testing circuit that comes off, owing to need detecting electrode whether to come off, therefore, this electrode testing circuit that comes off generally need be connected in the electrode loop, judges according to the detection of the signal of telecommunication (electric current or voltage) whether this electrode comes off.Electrode loop described in the utility model generally refers under the situation that electrode do not come off, this electrode and ground or other paths be can UNICOM circuit be connected.
Fig. 1 is the electrode of this utility model embodiment testing circuit structural representation that comes off.Please refer to Fig. 1, the electrode of this utility model embodiment testing circuit that comes off comprises the first power supply V1, first resistance R 1, second source V2, first comparator U1 and the processor.This first power supply V1, first resistance R 1, second source V2 and the first comparator U1 etc. choose does not have special requirement, as long as can realize the function of this circuit, for example, this first power supply V1 can choose the power supply of 4.8V, and this second source V2 can choose the power supply of 0.24V.This second source V2 can obtain by the first power supply V1 dividing potential drop, and this second source V2 is used for judging the benchmark whether electrode comes off generally as reference power supply.Certainly, this first power supply V1 also can obtain through amplifying for this second source V2.This first power supply V1 and second source V2 also can obtain through different bleeder circuits by same power supply.This processor is generally module or the device of functions such as having calculating and logical process, this processor generally comprises ECU(Electronic Control Unit in the present embodiment, electronic control unit), MCU(Micro Control Unit, microprocessor), DSP(Digital Signal Processing, Digital Signal Processing), single-chip microcomputer etc.This processor is preferably single-chip microcomputer in the present embodiment.
This first power supply V1 is connected in the first input end and electrode loop of this first comparator U1 by this first resistance R 1, this second source V2 is connected in second input of the first comparator U1, and this processor is connected with the outfan of the first comparator U1 and is used for judging according to the output of described comparator whether described electrode comes off.This processor can judge whether electrode comes off, and judgment processing is rapid like this, and the logical judgment amount is few according to input trailing edge or rising edge.This processor also can carry out logical operations according to the high-low level of first comparator U1 output and judge whether this electrode comes off.Certainly, this processor also can judge whether this electrode comes off according to other known methods.
The come off work process of testing circuit of the electrode of brief description present embodiment: when electrode does not come off, this first power supply V1 constitutes path by first resistance R 1 through electrode loop, this moment, the first input end of this first comparator U1 received first voltage (the first power supply V1 is through first resistance R, 1 voltage after partial), this first comparator U1 compares output one level with the voltage of first voltage and this second source V2, when electrode comes off, because electrode loop disconnects, therefore, the voltage of this first power supply V1 just directly is carried in this first input end, so, this first comparator U1 compares another level of output with the voltage of the first power supply V1 and the voltage of this second source V2, because the output that both of these case can produce two kinds of level, therefore, this processor just can judge whether electrode comes off according to input trailing edge or rising edge.
Further, this electrode testing circuit that comes off also comprises amplitude limiter circuit in certain embodiments, can there be big voltage in the electrode loop among the general this embodiment, should can brings adverse effect to devices such as this first comparators by big voltage, therefore need to increase this amplitude limiter circuit.This amplitude limiter circuit is connected between this first resistance R 1 and this electrode loop.Specifically, this amplitude limiter circuit comprises the 3rd power supply V3, the first diode D1 and the second diode D2, the negative pole of this first diode D1 links to each other with the positive output of described the 3rd power supply V3, the positive and negative connection of described first, second diode (D1, D2) (namely positive pole is connected with negative pole), the plus earth of this second diode D2, this first resistance R 1 and this electrode loop are connected in described first, second diode (D1, D2) junction.When having big voltage, this second diode D2 can breakdownly be formed into the path on ground, and voltage is clamped down on voltage place at the 3rd power supply V3 well.The size of tertiary voltage V3 is generally 5V.
Further, some exist bigger voltage electrode loop embodiment in, also comprise discharge tube G, the end of this discharge tube G is between this amplitude limiter circuit and described electrode loop, other end ground connection, in conjunction with above-described embodiment, the non-earth terminal of this discharge tube G is connected this first, second diode (D1, D2) junction.Work process is similar to amplitude limiter circuit, does not repeat them here.
Fig. 2 is the pace-making electrical block diagram of this utility model embodiment.Please refer to Fig. 2, this utility model embodiment also provides a kind of pace-making circuit.This pace-making circuit comprises electrode loop and the above-mentioned electrode testing circuit that comes off, this electrode loop comprises pacing controller, the 4th power supply V4, the first switching tube M1, second switch pipe M2, the second comparator U2 and second resistance R 2, the 4th power supply V4, the first switching tube M1, electrode, second switch pipe M2, second resistance R 2 and ground connect successively, the outfan of this second comparator U2 is connected with the control end of this second switch pipe M2, the first input end of this second comparator U2 is connected between this second resistance R 2 and the described second switch pipe M2, second input of this second comparator U2 is connected with described pacing controller, this pacing controller also is connected with the control end of this first switching tube M1, and this electrode testing circuit that comes off is connected between this first switching tube M1 and this electrode.This first, second diode (D1, D2) junction is connected between this first switching tube M1 and this electrode, and the position does not have special requirement.The size of the 4th power supply V4 is the same with this first power supply V1 not to have specific (special) requirements.General this first to fourth power supply is preferably dc source.This first switching tube M1, second switch pipe M2 can be tripod gate-controlled switch devices such as audion, metal-oxide-semiconductor.Present embodiment preferably this first switching tube M1, second switch pipe M2 is metal-oxide-semiconductor.This pacing controller can also can reactivate other processors for come off single-chip microcomputer in the testing circuit of this electrode.Certainly generally comprise pace-making control sequence or sequential or software etc. in these processors or the single-chip microcomputer.
This pace-making circuit is controlled the second input terminal voltage size with the second comparator U2 of cut-offfing of the first switching tube M1 by pacing controller, obtains the continuous current of variable size.This continuous current is used for pace-making, realizes starting the heartbeat function.This pace-making circuit is simple, design is ingenious, has also realized carrying out in the process of pace-making the detection whether electrode comes off simultaneously.
Further, in order to realize accurately and security control, this pace-making circuit also comprises the 5th power supply V5 and the 3rd switching tube M3, this pacing controller is connected with the control end of the described first switching tube M1 by described the 3rd switching tube M3, described pacing controller is connected with the control end of described the 3rd switching tube M3, and the other two ends of described the 3rd switching tube M3 are connected with ground with described the 5th power supply V5 respectively.Further preferred, this pace-making circuit also comprises the 4th resistance R 4 and the 5th resistance R 5, the 4th resistance R 4 is connected between the 5th power supply V5 and the 3rd switching tube M3, the 5th resistance R 5 is connected between the 5th power supply V5 and the 4th resistance R 4, and the control end of this first switching tube M1 is connected between the 4th resistance R 4 and the 5th resistance R 5.The 4th resistance R 4, the 5th resistance R 5 can play the effect of current-limiting protection and voltage-limiting protection, simultaneously, are under the situation of same power supply at the 4th power supply V4 and the 5th power supply V5, and necessary pressure drop can also be provided, and realize the driving to the first switching tube M1.
Further; for the first switching tube M1 is protected; this pace-making circuit preferably also comprises the 3rd resistance R 3, the 3rd diode D3 and first capacitor C 1; described the 3rd resistance R 3 be connected in parallel on the two ends of the non-control end of the described first switching tube M1 after described first capacitor C 1 is connected in series, described the 3rd diode D3 is connected in parallel on the two ends of described the 3rd resistance R 3.
Further, in the pace-making circuit advantageous applications defibrillator of present embodiment, preferably less than 500V, therefore, defibrillation and pace-making can use same power supply to the voltage of the 4th power supply V4, reduce cost greater than 24V.Need that individual pressure reduction is arranged between general the 4th power supply V4 and the 5th power supply V5, realize opening and shutting off of the first switching tube M1 well.
Further, in order to guarantee electrode loop safety under big voltage, can not threaten people's life security, the pace-making circuit of present embodiment preferably also comprises relay, the switch terminals of described relay is connected in the described electrode loop, and the control end of described relay is connected with described pacing controller.The quantity of this relay does not have special requirement, can be corresponding one by one with the quantity of electrode, also can be one, perhaps other needed numbers.In the needs pace-making, pacing controller makes the switch terminals closure of relay realize the electrode loop conducting by the control end of controlling this relay, and pacing controller is controlled the detection that the second comparator U2 and the 3rd switching tube M3 realization constant current pace-making and electrode come off then.
More than come off testing circuit and pace-making circuit of electrode provided by the utility model is described in detail, used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand core concept of the present utility model; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (10)
1. electrode testing circuit that comes off, it is characterized in that, comprise first power supply, first resistance, second source, first comparator and processor, described first power supply is connected to by described first resistance on the first input end of described first comparator and in the electrode loop, described second source is connected on second input of described first comparator, and described processor is connected with the outfan of described first comparator and is used for judging according to the output of described first comparator whether described electrode comes off.
2. the electrode as claimed in claim 1 testing circuit that comes off is characterized in that also comprise amplitude limiter circuit, described amplitude limiter circuit is connected between described first resistance and the described electrode loop.
3. the electrode as claimed in claim 2 testing circuit that comes off is characterized in that also comprise discharge tube, an end of described discharge tube is connected between described amplitude limiter circuit and the described electrode loop, other end ground connection.
4. as claim 2 or the 3 described electrodes testing circuit that comes off, it is characterized in that, described amplitude limiter circuit comprises the 3rd power supply, first diode and second diode, the negative pole of described first diode links to each other with the positive output of described the 3rd power supply, the positive and negative connection of described first, second diode, the plus earth of described second diode, described first resistance are connected in described first, second diode junction.
5. the electrode as claimed in claim 1 testing circuit that comes off is characterized in that, described processor judges according to input trailing edge or rising edge whether electrode comes off.
6. pace-making circuit, it is characterized in that, comprise each described electrode of electrode loop and claim 1 to 5 testing circuit that comes off, described electrode loop comprises pacing controller, the 4th power supply, first switching tube, the second switch pipe, second comparator and second resistance, described the 4th power supply, first switching tube, electrode, the second switch pipe, second resistance and ground connect successively, the outfan of described second comparator is connected with the control end of described second switch pipe, the first input end of described second comparator is connected between described second resistance and the described second switch pipe, second input of described second comparator is connected with described pacing controller, described pacing controller also is connected with described first control end of switching tube, and the described electrode testing circuit that comes off is connected between described first switching tube and the described electrode.
7. pace-making circuit as claimed in claim 6, it is characterized in that, also comprise the 5th power supply and the 3rd switching tube, described pacing controller is connected with described first control end of switching tube by described the 3rd switching tube, described pacing controller is connected with described the 3rd control end of switching tube, and the other two ends of described the 3rd switching tube are connected with ground with described the 5th power supply respectively.
8. pace-making circuit as claimed in claim 6, it is characterized in that, the 3rd resistance, the 3rd diode and first electric capacity are connected in parallel on the two ends of the non-control end of described first switching tube behind described the 3rd resistance and described first capacitance series, and described the 3rd diode is connected in parallel on the two ends of described the 3rd resistance.
9. pace-making circuit as claimed in claim 6 is characterized in that, described the 4th power source voltage greater than 24V less than 500V.
10. pace-making circuit as claimed in claim 6 is characterized in that, also comprises relay, and the switch terminals of described relay is connected in the described electrode loop, and the control end of described relay is connected with described pacing controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320147176 CN203154598U (en) | 2013-03-28 | 2013-03-28 | Electrode contact loss detection circuit and pace-making circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320147176 CN203154598U (en) | 2013-03-28 | 2013-03-28 | Electrode contact loss detection circuit and pace-making circuit |
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| CN203154598U true CN203154598U (en) | 2013-08-28 |
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| CN 201320147176 Expired - Lifetime CN203154598U (en) | 2013-03-28 | 2013-03-28 | Electrode contact loss detection circuit and pace-making circuit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107290619A (en) * | 2017-08-08 | 2017-10-24 | 广州市三锐电子科技有限公司 | A kind of electrode delamination detects circuit |
| 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 |
| WO2020172820A1 (en) * | 2019-02-27 | 2020-09-03 | 深圳迈瑞生物医疗电子股份有限公司 | Defibrillator and electrode plates |
| CN112494159A (en) * | 2020-11-27 | 2021-03-16 | 广州通泽医疗科技有限公司 | Electric signal transmission device for preventing electrode from falling off |
-
2013
- 2013-03-28 CN CN 201320147176 patent/CN203154598U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107290619A (en) * | 2017-08-08 | 2017-10-24 | 广州市三锐电子科技有限公司 | A kind of electrode delamination detects circuit |
| CN107290619B (en) * | 2017-08-08 | 2023-09-26 | 广州市三锐电子科技有限公司 | Electrode drop detection circuit |
| 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 |
| WO2020172820A1 (en) * | 2019-02-27 | 2020-09-03 | 深圳迈瑞生物医疗电子股份有限公司 | Defibrillator and electrode plates |
| CN112714664A (en) * | 2019-02-27 | 2021-04-27 | 深圳迈瑞生物医疗电子股份有限公司 | Defibrillator and electrode slice |
| CN112494159A (en) * | 2020-11-27 | 2021-03-16 | 广州通泽医疗科技有限公司 | Electric signal transmission device for preventing electrode from falling off |
| CN112494159B (en) * | 2020-11-27 | 2022-02-11 | 广州通泽医疗科技有限公司 | Electric signal transmission device for preventing electrode from falling off |
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Granted publication date: 20130828 |