CN103040458B - Human body electrophysiological signal detection instrument - Google Patents
Human body electrophysiological signal detection instrument Download PDFInfo
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- CN103040458B CN103040458B CN201210583490.3A CN201210583490A CN103040458B CN 103040458 B CN103040458 B CN 103040458B CN 201210583490 A CN201210583490 A CN 201210583490A CN 103040458 B CN103040458 B CN 103040458B
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Abstract
The invention discloses a human body electrophysiological signal detection instrument which comprises a master power module, a human body electrophysiological signal detection device, a detection circuit and a switching circuit. The detection device comprises at least one pair of electrode plates attached to the human body, the detection circuit is used for detecting conducting states of the electrode plates in fit contact with the human body, and the switching circuit is connected with the master power module, the human body electrophysiological signal detection device and the detection circuit and switching operation states of the human body electrophysiological signal detection device and the detection circuit. Data detection influences caused by poor contact and poor conductivity can be timely detected and repaired by detecting the conducting states of the electrode plates attached to the surface of the human body and contacted with the human body and detecting the conducting states of the electrode plates and a conductive cable connected with an instrument, and accordingly effective connection between the instrument cable and the human body can be guaranteed, and human body resistance values obtained from detection can be real, accurate and reliable.
Description
Technical field
The present invention relates to medical domain, particularly relate to a kind of device for human body resistance value for medical domain.
Background technology
At current medical health field, the electricity physiological signal of human body electrophysiologicalsignal signal detection instrument to human body need being used to detect in real time, needing when detecting to adopt electrode slice to be affixed on body surface.But, the laminating tightness degree of electrode slice and body surface detects verity and the accuracy of numerical value by directly affecting detector, but, the existing human body electrophysiologicalsignal signal detection instrument not special laminating tightness degree of device to electrode slice and body surface detects and assesses, artificially electrode slice can only be adjacent to body surface as much as possible by detecting operator, anthropic factor impact is very large, result in the verity of existing human body electrophysiologicalsignal signal detection instrument detection the data obtained, accuracy and reliability and all there is certain uncertainty.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of human body electrophysiologicalsignal signal detection instrument, and it can detect to fast and reliable the laminating tightness degree of electrode slice and body surface, to guarantee verity and the accuracy of the data obtained when detecting electricity physiological signal.
In order to solve the problems of the technologies described above, the present invention proposes a kind of human body electrophysiologicalsignal signal detection instrument, comprise main power source module, human body electrophysiologicalsignal signal detection device and at least one pair of is for being attached to the electrode slice on human body, described human body electrophysiologicalsignal signal detection instrument also comprises: for detecting the testing circuit of this conduction state contacted of fitting to electrode slice and human body, the equal correspondence of every a pair electrode slice is provided with an alignment detection circuit; And be connected with main power source module, human body electrophysiologicalsignal signal detection device and testing circuit respectively and the commutation circuit that the duty of human body electrophysiologicalsignal signal detection device and testing circuit is switched.
Further, described testing circuit comprises integrated operational amplifier and detects power supply, the positive termination of power input of described integrated operational amplifier detects power supply, power input negativing ending grounding, the inverting input of described integrated operational amplifier connects detection power supply by pull-up resistor and passes through pull down resistor ground connection, the in-phase input end of integrated operational amplifier is by the first resistance eutral grounding, and described in-phase input end is also connected to the first electrode slice in described pair of electrodes sheet, in described pair of electrodes sheet, the second electrode slice is connected to detection power supply, the outfan of integrated operational amplifier and the second resistance, ground connection after first light emitting diode series connection, and the outfan of integrated operational amplifier is also connected to inverting input by the 3rd resistance.
Further, described commutation circuit comprises the first relay, the first key switch and the second key switch, and the first end of described first key switch and the second key switch is all connected to main power source module; Described first relay has ten pins, the concrete wiring of each pin is as follows: the first pin connects the second end of the first key switch, second pin and the 9th pin are connected two detection lines of human body electrophysiologicalsignal signal detection device respectively, three-prong and the 8th pin are connected the first electrode slice and second electrode slice of described pair of electrodes sheet respectively, 4th pin connects detection power supply, 5th pin and the equal ground connection of the 6th pin, 7th pin connects the in-phase input end of integrated operational amplifier, and the tenth pin connects the second end of the second key switch.
Further, described commutation circuit also comprises the second relay, second relay also has ten pins, each pin wiring of the second relay is as follows: the first pin connects the second end of the first key switch, second pin is vacant, three-prong and the 8th pin are all connected to main power source module, 4th pin is connected to detection power supply, 5th pin and the equal ground connection of the 6th pin, 7th pin is connected with the 4th pin and ground connection after being connected in series the 4th resistance and the second light emitting diode, 9th pin serial connection the 5th resistance and the 3rd light emitting diode after ground connection, tenth pin connects the second end of the second key switch.
Further, described detection power supply includes the chip with voltage output end foot.
Further, the described main power source module on and off switch that comprises main power source and be connected with main power source for controlling main power source break-make.
Further, described main power source module also comprise by the 6th resistance and the 4th light emitting diode connect formed after be connected to power indicating circuit between one end away from main power source of on and off switch and earth terminal.
Further, described human body electrophysiologicalsignal signal detection instrument has multipair electrode slice, the connecting line of each pair of electrode slice is all integrated into an electrode slice grafting row, described electrode slice grafting row is provided with the terminals be connected with each electrode slice one_to_one corresponding, and the three-prong of the first relay of each testing circuit is corresponding with each terminals that the 8th pin is arranged with electrode slice grafting to be respectively connected.
Further, described human body electrophysiologicalsignal signal detection instrument has the quantity detection line identical with the quantity of electrode slice, one end of each detection line is integrated into a detection line grafting row, described detection line grafting row is provided with the terminals be connected with each detection line one_to_one corresponding, and the second pin of the first relay of each testing circuit is corresponding with each terminals that the 9th pin is arranged with detection line grafting to be respectively connected.
The invention has the beneficial effects as follows: by detecting the conduction state of the electrode slice and human contact that are pasted on body surface, can detect in time and repair the Data Detection impact that loose contact brings, thus ensure that detector is effectively connected with the good of human body, the human body electricity physiological signal that detector is obtained is true, accurate and reliable.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of power pack in the present invention and notification portion.
Fig. 2 is the circuit diagram of commutation circuit part in the present invention and detecting portion.
Fig. 3 is the circuit diagram of the human body junction point interface in the present invention.
Fig. 4 is the circuit diagram of the instrument junction point interface in the present invention.
Fig. 5 is the schematic diagram of theory diagram of the present invention.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can be combined with each other, and are described in further detail the present invention below in conjunction with the drawings and specific embodiments.
Shown in Fig. 5, a kind of human body electrophysiologicalsignal signal detection instrument, comprise main power source module, human body electrophysiologicalsignal signal detection device and at least one pair of is for being attached to the electrode slice on human body, described human body electrophysiologicalsignal signal detection instrument also comprises: for detecting the testing circuit of this conduction state contacted of fitting to electrode slice and human body, the equal correspondence of every a pair electrode slice is provided with an alignment detection circuit; And be connected with main power source module, human body electrophysiologicalsignal signal detection device and testing circuit respectively and the commutation circuit that the duty of human body electrophysiologicalsignal signal detection device and testing circuit is switched.
An embodiment is, described main power source part comprises power interface JP1,5V DC source, also have main power source module described on and off switch P1. also comprise by the 6th resistance R6 and the 4th light emitting diode D4 connect formed after be connected to power indicating circuit between one end away from main power source of on and off switch and earth terminal.When switch P 1 closes, light emitting diode D4 is bright, display power supply work.
An embodiment is, with reference to shown in Fig. 2, described testing circuit comprises integrated operational amplifier U3A and detects power supply U1, U2, power input anode and the pin 8 of described integrated operational amplifier connect detection power supply, power input negative terminal and pin 4 ground connection, the inverting input of described integrated operational amplifier and pin two connect detection power supply VCC1 by pull-up resistor R4 and pass through pull down resistor R8 ground connection GND1, the in-phase input end of integrated operational amplifier U3A and pin 3 are by the first resistance R1 ground connection, and described in-phase input end pin 3 is also connected to the first electrode slice in described pair of electrodes sheet, in described pair of electrodes sheet, the second electrode slice is connected to detection power supply, the outfan of integrated operational amplifier and pin one and the second resistance R2, ground connection GND1 after first light emitting diode D1 connects, and the outfan of integrated operational amplifier and pin one are also connected to inverting input and pin two by the 3rd resistance R3.By the light on and off situation display testing result of light emitting diode D1.
The operation principle that described voltage comparator realizes detecting is: when electrode slice and human contact bad time, detect the in-phase input end voltage reduction that power supply flows through the resistance increase integrated operational amplifier of human body, when its magnitude of voltage is lower than reference voltage, integrated operational amplifier output LOW voltage, the light emitting diode be attached thereto goes out; On the contrary, when electrode slice and human contact good time, detect power supply flow through human body resistance reduce, the in-phase input end voltage of integrated operational amplifier raises, when its magnitude of voltage is higher than reference voltage, integrated operational amplifier output HIGH voltage, the light emitting diode be attached thereto is bright.
An embodiment is, shown in seeing figures.1.and.2, described commutation circuit comprises the first relay K 1, first key switch S1 and the second key switch S2, and the first end of described first key switch S1 and the second key switch S2 is all connected to main power source module, described first relay K 1 has ten pins, the concrete wiring of each pin is as follows: the first pin connects second end of the first key switch S1, second pin and the 9th pin are connected two detection line J-H1 of human body electrophysiologicalsignal signal detection device respectively, J-H2, three-prong and the 8th pin are connected the first electrode slice H1 and the second electrode slice H2 of described pair of electrodes sheet respectively, 4th pin connects detection power supply VCC1, 5th pin and the equal ground connection GND1 of the 6th pin, 7th pin connects the in-phase input end of integrated operational amplifier, tenth pin connects second end of the second key switch S2.
Described commutation circuit also comprises the second relay K 2, second relay K 2 also has ten pins, each pin wiring of the second relay is as follows: the first pin connects second end of the first key switch S1, second pin is vacant, three-prong and the 8th pin are all connected to main power source module, 4th pin is connected to for generating the power circuit detecting power supply, 5th pin and the equal ground connection of the 6th pin, 7th pin is connected with the 4th pin and ground connection after being connected in series the 4th resistance R4 and the second light emitting diode D2, ground connection after 9th pin serial connection the 5th resistance R5 and the 3rd light emitting diode D3, tenth pin connects the second end of the second key switch.Described relay K 2 and light emitting diode D2, D3 form a duty Tip element, when key switch S1 closes, 3,4 foot conductings in relay K 2,7,8 foot conductings, Light-Emitting Diode D2 lights, prompting enters into bulk resistor testing circuit duty, otherwise, when key switch S1 closes, 2,3 foot conductings in relay K 1,8,9 foot conductings, Light-Emitting Diode D3 lights, and prompting enters into human body electrophysiologicalsignal signal detection instrument part.
Meanwhile, the detection power supply in described testing circuit, namely has chip U1 and U2 of voltage output end.This part is connected with the second relay K 2, and the 4th pin of the second relay K 2 is connected in series with the 7th pin and is connected with the input pin one of chip U1 with U2.When key switch S1 closes, 3,4 foot conductings in relay K 2,7,8 foot conductings, Light-Emitting Diode D2 lights, and prompting enters into bulk resistor testing circuit duty, simultaneously, DC source U1 with U2 is communicated with main power source part, for checkout gear provides supply voltage to input.
Generally, when on and off switch P1 closes, when key switch S1 also closes, then commutation circuit device is switched to checkout gear work, otherwise when key switch S2 closes, commutation circuit device is switched to human body electrophysiologicalsignal signal detection instrument some work.
Two cathode power supplies of the relay K 2 of described commutation circuit part are connected with power pack positive pole respectively; Two data input pins of this relay K 2 are connected with the interface of human body junction point; The outfan of described relay K 2 is connected with checkout gear and instrument junction point interface and human body electrophysiologicalsignal signal detection instrument importation respectively.
An embodiment is, with reference to shown in Fig. 3, described human body electrophysiologicalsignal signal detection instrument has multipair electrode slice, the connecting line of each pair of electrode slice is all integrated into an electrode slice grafting row JP2, described electrode slice grafting row is provided be connected with each electrode slice one_to_one corresponding terminals H1, H2, H3, H4 and L1, L2, L3, L4, the three-prong of the first relay K 1 of each testing circuit is corresponding with each terminals that the 8th pin is arranged with electrode slice grafting to be respectively connected.
With reference to shown in Fig. 4, described human body electrophysiologicalsignal signal detection instrument has the quantity detection line identical with the quantity of electrode slice, one end of each detection line is integrated into a detection line grafting row JP3, described detection line grafting row is provided be connected with each detection line one_to_one corresponding terminals J-H1, J-H2, J-H3, J-H4 and J-L1, J-L2, J-L3, J-L4, the second pin of the first relay K 1 of each testing circuit is corresponding with each terminals that the 9th pin is arranged with detection line grafting to be respectively connected.
Although illustrate and describe embodiments of the invention, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments without departing from the principles and spirit of the present invention, scope of the present invention is limited by claims and equivalency range thereof.
Claims (9)
1. a human body electrophysiologicalsignal signal detection instrument, comprises main power source module, human body electrophysiologicalsignal signal detection device and at least one pair of is for being attached to the electrode slice on human body, and it is characterized in that, described human body electrophysiologicalsignal signal detection instrument also comprises:
For detecting the testing circuit of this conduction state contacted of fitting to electrode slice and human body, the equal correspondence of every a pair electrode slice is provided with an alignment detection circuit; And
Be connected with main power source module, human body electrophysiologicalsignal signal detection device and testing circuit respectively and the commutation circuit switched the duty of human body electrophysiologicalsignal signal detection device and testing circuit, described commutation circuit alternatively makes human body electrophysiologicalsignal signal detection device or testing circuit enter duty.
2. human body electrophysiologicalsignal signal detection instrument as claimed in claim 1, it is characterized in that, described testing circuit comprises integrated operational amplifier and detects power supply, the positive termination of power input of described integrated operational amplifier detects power supply, power input negativing ending grounding, the inverting input of described integrated operational amplifier connects detection power supply by pull-up resistor and passes through pull down resistor ground connection, the in-phase input end of integrated operational amplifier is by the first resistance eutral grounding, and described in-phase input end is also connected to the first electrode slice in described pair of electrodes sheet, in described pair of electrodes sheet, the second electrode slice is connected to detection power supply, the outfan of integrated operational amplifier and the second resistance, ground connection after first light emitting diode series connection, and the outfan of integrated operational amplifier is also connected to inverting input by the 3rd resistance.
3. human body electrophysiologicalsignal signal detection instrument as claimed in claim 2, it is characterized in that, described commutation circuit comprises the first relay, the first key switch and the second key switch, and the first end of described first key switch and the second key switch is all connected to main power source module; Described first relay has ten pins, the concrete wiring of each pin is as follows: the first pin connects the second end of the first key switch, second pin and the 9th pin are connected two detection lines of human body electrophysiologicalsignal signal detection device respectively, three-prong and the 8th pin are connected the first electrode slice and second electrode slice of described pair of electrodes sheet respectively, 4th pin connects detection power supply, 5th pin and the equal ground connection of the 6th pin, 7th pin connects the in-phase input end of integrated operational amplifier, and the tenth pin connects the second end of the second key switch.
4. human body electrophysiologicalsignal signal detection instrument as claimed in claim 3, it is characterized in that, described commutation circuit also comprises the second relay, second relay also has ten pins, each pin wiring of the second relay is as follows: the first pin connects the second end of the first key switch, second pin is vacant, three-prong and the 8th pin are all connected to main power source module, 4th pin is connected to detection power supply, 5th pin and the equal ground connection of the 6th pin, 7th pin is connected with the 4th pin and ground connection after being connected in series the 4th resistance and the second light emitting diode, 9th pin serial connection the 5th resistance and the 3rd light emitting diode after ground connection, tenth pin connects the second end of the second key switch.
5. human body electrophysiologicalsignal signal detection instrument as claimed in claim 4, it is characterized in that, described detection power supply includes the chip with voltage output end foot.
6. human body electrophysiologicalsignal signal detection instrument as claimed in claim 4, is characterized in that, the on and off switch that described main power source module comprises main power source and is connected with main power source for controlling main power source break-make.
7. human body electrophysiologicalsignal signal detection instrument as claimed in claim 6, it is characterized in that, described main power source module also comprise by the 6th resistance and the 4th light emitting diode connect formed after be connected to power indicating circuit between one end away from main power source of on and off switch and earth terminal.
8. human body electrophysiologicalsignal signal detection instrument as claimed in claim 3, it is characterized in that, described human body electrophysiologicalsignal signal detection instrument has multipair electrode slice, the connecting line of each pair of electrode slice is all integrated into an electrode slice grafting row, described electrode slice grafting row is provided with the terminals be connected with each electrode slice one_to_one corresponding, and the three-prong of the first relay of each testing circuit is corresponding with each terminals that the 8th pin is arranged with electrode slice grafting to be respectively connected.
9. human body electrophysiologicalsignal signal detection instrument as claimed in claim 8, it is characterized in that, described human body electrophysiologicalsignal signal detection instrument has the quantity detection line identical with the quantity of electrode slice, one end of each detection line is integrated into a detection line grafting row, described detection line grafting row is provided with the terminals be connected with each detection line one_to_one corresponding, and the second pin of the first relay of each testing circuit is corresponding with each terminals that the 9th pin is arranged with detection line grafting to be respectively connected.
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| CN201210583490.3A CN103040458B (en) | 2012-12-28 | 2012-12-28 | Human body electrophysiological signal detection instrument |
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| CN201210583490.3A CN103040458B (en) | 2012-12-28 | 2012-12-28 | Human body electrophysiological signal detection instrument |
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| CN103040458B true CN103040458B (en) | 2015-01-21 |
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| JPS62324A (en) * | 1985-06-27 | 1987-01-06 | 本山 博 | Apparatus for diagnosis of internal organs and nerval function |
| EP3150121B1 (en) * | 2004-12-20 | 2018-10-03 | UNEEG medical A/S | Device for prediction and warning of hypoglycaemic attack |
| KR100871842B1 (en) * | 2007-05-02 | 2008-12-03 | 한국전자통신연구원 | Apparatus and Method for controlling Human Body Contact of Ground Electrode, and Human Body Communication System using it |
| CN201088626Y (en) * | 2007-11-09 | 2008-07-23 | 上海沪通电子有限公司 | Resonant dual disc neutral electrode observation system |
| CN201353144Y (en) * | 2008-12-29 | 2009-12-02 | 深圳市鑫汇科科技有限公司 | Human body resistance measuring device |
| EP2305111A1 (en) * | 2009-10-01 | 2011-04-06 | seca ag | Bioimpedance measuring device and method |
| CN202568245U (en) * | 2012-05-09 | 2012-12-05 | 上海理工大学 | Monitoring device for contact state of electrocardio electrode and skin |
| CN203417200U (en) * | 2012-12-28 | 2014-02-05 | 深圳市千帆电子有限公司 | Detector of electric physiological signals in human bodies |
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