CN203970389U - A kind of ecg signal acquiring circuit - Google Patents
A kind of ecg signal acquiring circuit Download PDFInfo
- Publication number
- CN203970389U CN203970389U CN201420433047.2U CN201420433047U CN203970389U CN 203970389 U CN203970389 U CN 203970389U CN 201420433047 U CN201420433047 U CN 201420433047U CN 203970389 U CN203970389 U CN 203970389U
- Authority
- CN
- China
- Prior art keywords
- resistance
- operational amplifier
- connects
- circuit
- capacitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Amplifiers (AREA)
Abstract
The utility model discloses a kind of ecg signal acquiring circuit, be included in the electrode RA of the right hand signal for extracting human body, be used for the electrode LA of the left hand signal that extracts human body, be used for the electrode RL of the left foot signal that extracts human body, preposing signal process circuit, trap circuit, follower, linear isolation amplifier, compensating circuit, electrode RA is all connected preposing signal process circuit with electrode LA, electrode RL connects earth signal, preposing signal process circuit connects trap circuit, trap circuit connects follower, follower connects linear isolation amplifier, linear isolation amplifier connects compensating circuit, this utility model provides one can eliminate interference noise, be difficult for being disturbed, reliability is high, accuracy is high, the ecg signal acquiring circuit that cost is low.
Description
Technical field
This utility model relates to a kind of ecg signal acquiring circuit.
Background technology
Ecg signal acquiring circuit is the core component in various electrocardiogram monitor, and the quality of its performance directly affects Accurate Diagnosis and the treatment of heart disease, and therefore the accuracy of ECG signal sampling circuit and reliability are vital.Existing ecg signal acquiring circuit is easily interfered, and causes detecting inaccuracy, and circuit more complicated, and cost is high.
Utility model content
The purpose of this utility model is the deficiency overcoming in existing product, provides one can eliminate interference noise, is difficult for being disturbed the ecg signal acquiring circuit that reliability is high, accuracy is high, cost is low.
In order to achieve the above object, this utility model is achieved through the following technical solutions:
A kind of ecg signal acquiring circuit of the present utility model, be included in the electrode RA of the right hand signal for extracting human body, for extract human body left hand signal electrode LA, for extracting electrode RL, preposing signal process circuit, trap circuit, follower, linear isolation amplifier, the compensating circuit of left foot signal of human body, electrode RA is all connected preposing signal process circuit with electrode LA, electrode RL connects earth signal, preposing signal process circuit connects trap circuit, trap circuit connects follower, follower connects linear isolation amplifier, and linear isolation amplifier connects compensating circuit.
Preposing signal process circuit of the present utility model comprises pre-amplification circuit and active low-pass filter amplifying circuit, pre-amplification circuit connects active low-pass filter amplifying circuit, pre-amplification circuit comprises AD620 integral instrument amplifier U1, resistance R 1, resistance R 2, resistance R 3, resistance R 4, electrode RL connects earth signal by resistance R 3, electrode LA connects the input in the same way of AD620 integral instrument amplifier U1 by resistance R 1, electrode RA is by connecting the reverse input end of AD620 integral instrument amplifier U1 by resistance R 2, active low-pass filter amplifying circuit comprises capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4, capacitor C 5, resistance R 5, resistance R 6, resistance R 7, resistance R 8, resistance R 9, resistance R 10, resistance R 11, resistance R 8, TL084 operational amplifier U2, TL084 operational amplifier U3, the outfan of AD620 integral instrument amplifier U1 connects one end of capacitor C 1, one end of the other end contact resistance R5 of capacitor C 1, the other end of resistance R 5 connects the input in the same way of TL084 operational amplifier U2, the other end of capacitor C 1 connects earth signal by resistance R 6, the other end of resistance R 5 connects earth signal by capacitor C 2, the reverse input end of TL084 operational amplifier U2 connects earth signal by resistance R 8, the reverse input end of operational amplifier U2 connects the outfan of TL084 operational amplifier U2 by resistance R 7, the outfan of TL084 operational amplifier U2 connects the input in the same way of TL084 operational amplifier U3 by capacitor C 3, the input in the same way of TL084 operational amplifier U3 connects earth signal by resistance R 9, the reverse input end of TL084 operational amplifier U3 connects earth signal by resistance R 10, the reverse input end of TL084 operational amplifier U3 connects the outfan of TL084 operational amplifier U3 by resistance R 11, capacitor C 5 is in parallel with resistance R 11, the outfan of TL084 operational amplifier U3 connects capacitor C 4, the 7 pin connection+12V power supplys of AD620 integral instrument amplifier U1, the 4 pin connection-12V power supplys of AD620 integral instrument amplifier U1, TL084 operational amplifier U2, all connect-12V of the 11 pins power supply of TL084 operational amplifier U3, TL084 operational amplifier U2, all connect+12V of the 4 pins power supply of TL084 operational amplifier U3.
Trap circuit of the present utility model comprises capacitor C 21, capacitor C 22, capacitor C 23, resistance R 21, resistance R 22, resistance R 23, resistance R 24, resistance R 25, TL084 operational amplifier U4, capacitor C 21, capacitor C 22 mutually series connection forms series circuit a, resistance R 21, resistance R 22 mutually series connection forms series circuit b, series circuit a and the series circuit b formation parallel circuit that is in parallel, parallel circuit connects the input in the same way of TL084 operational amplifier U4, the junction point that capacitor C 21 is connected mutually with capacitor C 22 is connected the outfan of TL084 operational amplifier U4 by resistance R 23, resistance R 21 is connected earth signal with the junction point that resistance R 22 is connected mutually by capacitor C 23, the reverse input end of TL084 operational amplifier U4 connects the outfan of TL084 operational amplifier U4 by resistance R 24, the reverse input end of TL084 operational amplifier U4 also connects earth signal by resistance R 25, the 11 pin connection-12V power supplys of TL084 operational amplifier U4, the 4 pin connection+12V power supplys of TL084 operational amplifier U4.
Follower of the present utility model comprises TL084 operational amplifier U5, the reverse input end of TL084 operational amplifier U5 connects the outfan of TL084 operational amplifier U5, the 11 pin connection-12V power supplys of TL084 operational amplifier U5, the 4 pin connection+12V power supplys of TL084 operational amplifier U5.
Linear isolation amplifier of the present utility model comprises 6N136 high speed optoelectronic isolator U7, for by+12V power conversion being+the MC78L05CP power conversion device U6 of 5V power supply, capacitor C 30, resistance R 39, resistance R 30, resistance R 31, resistance R 32, NPN audion Q1, the 3 pin connection+12V power supplys of MC78L05CP power conversion device U6, the 2 pin downlink connection earth signals of MC78L05CP power conversion device U6, 1 pin of MC78L05CP power conversion device U6 connects the base stage of NPN audion Q1 by resistance R 39, 1 pin of MC78L05CP power conversion device U6 also connects the colelctor electrode of NPN audion Q1 by resistance R 30, the emitter stage of NPN audion Q1 connects 2 pins of 6N136 high speed optoelectronic isolator U7, the base stage of NPN audion Q1 also connects capacitor C 30, 3 pins of 6N136 high speed optoelectronic isolator U7 connect earth signal by resistance R 31, 5 pins of 6N136 high speed optoelectronic isolator U7 connect earth signal, 8 pins of 6N136 high speed optoelectronic isolator U7 connect 1 pin of MC78L05CP power conversion device U6, 8 pins of 6N136 high speed optoelectronic isolator U7 connect 6 pins of 6N136 high speed optoelectronic isolator U7 by resistance R 31.
Compensating circuit of the present utility model comprises TL084 operational amplifier U8, TL084 operational amplifier U9, resistance R 41, resistance R 42, resistance R 43, capacitor C 41, capacitor C 41 connects the input in the same way of TL084 operational amplifier U8, the input in the same way of TL084 operational amplifier U8 connects earth signal by resistance R 41, the reverse input end of TL084 operational amplifier U8 connects earth signal by resistance R 42, the reverse input end of TL084 operational amplifier U8 also connects the outfan of TL084 operational amplifier U8 by resistance R 43, the outfan of TL084 operational amplifier U8 connects the input in the same way of TL084 operational amplifier U9, the reverse input end of TL084 operational amplifier U9 connects the outfan of TL084 operational amplifier U9, TL084 operational amplifier U8, all connect-12V of the 11 pins power supply of TL084 operational amplifier U9, TL084 operational amplifier U8, all connect+12V of the 4 pins power supply of TL084 operational amplifier U9.
The beneficial effects of the utility model are as follows: preposing signal process circuit of the present utility model comprises pre-amplification circuit and active low-pass filter amplifying circuit, pre-amplification circuit connects active low-pass filter amplifying circuit, pre-amplification circuit comprises AD620 integral instrument amplifier U1, the high input impedance that pre-amplification circuit is made up of AD620, high cmrr, low noise, low drift pre-amplification circuit, therefore pre-amplification circuit is eliminated interference noise, be not subject to external disturbance, active low-pass filter amplifying circuit plays low-pass filtering, the effect of voltage amplification, signal is carried out to filtering, make signal more accurate, electrocardiosignal is because frequency is low, signal is little, therefore the power frequency of 50Hz is disturbed especially severe.Power frequency interference signals is obscured among electrocardiosignal by the distribution capacity in around instrument and equipment and human body, affect measurement effect, for the power frequency 50Hz removing in human body or measuring system disturbs, therefore need to be suppressed with trap circuit, trap circuit can well be removed power frequency 50Hz and disturb, and makes signal more accurate, linear isolation amplifier is for buffer action, eliminated the impact of external interference signals, therefore reliability is high, and degree of accuracy is high; Compensating circuit is the stability of the signal of photoelectricity isolation generation being done to further amplification and raising circuit, in compensating circuit, the reverse input end of TL084 operational amplifier U9 connects the outfan of TL084 operational amplifier U9, the impact of the change in resistance that has reduced to a great extent the unstable and load that display section circuit may exist on signal, improve the stability of circuit, reliability is high, and degree of accuracy is high; The number of electronic components that this utility model adopts is few, and electronic component cost is low, and therefore this utility model cost is low.
Brief description of the drawings
Fig. 1 is the system block diagram of a kind of ecg signal acquiring circuit of the present utility model;
Fig. 2 is the circuit theory diagrams of preposing signal process circuit of the present utility model;
Fig. 3 is the circuit theory diagrams of trap circuit of the present utility model;
Fig. 4 is the circuit theory diagrams of follower of the present utility model;
Fig. 5 is the circuit theory diagrams of linear isolation amplifier of the present utility model;
Fig. 6 is the circuit theory diagrams of compensating circuit of the present utility model.
Detailed description of the invention
Below in conjunction with Figure of description, the technical solution of the utility model is described further:
Illustrate: if network label is identical, they are connected.
As Fig. 1, Fig. 2, as Fig. 3, Fig. 4, Fig. 5, shown in Fig. 6, a kind of ecg signal acquiring circuit, be included in the electrode RA 1 of the right hand signal for extracting human body, be used for the electrode LA2 of the left hand signal that extracts human body, be used for the electrode RL3 of the left foot signal that extracts human body, preposing signal process circuit 4, trap circuit 5, follower 6, linear isolation amplifier 7, compensating circuit 8, electrode RA 1 is all connected preposing signal process circuit 4 with electrode LA2, electrode RL3 connects earth signal, preposing signal process circuit 4 connects trap circuit 5, trap circuit 5 connects follower 6, follower 6 connects linear isolation amplifier 7, linear isolation amplifier 7 connects compensating circuit 8.
Preposing signal process circuit 4 comprises pre-amplification circuit and active low-pass filter amplifying circuit, pre-amplification circuit connects active low-pass filter amplifying circuit, pre-amplification circuit comprises AD620 integral instrument amplifier U1, resistance R 1, resistance R 2, resistance R 3, resistance R 4, electrode RL connects earth signal by resistance R 3, electrode LA connects the input in the same way of AD620 integral instrument amplifier U1 by resistance R 1, electrode RA is by connecting the reverse input end of AD620 integral instrument amplifier U1 by resistance R 2, active low-pass filter amplifying circuit comprises capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4, capacitor C 5, resistance R 5, resistance R 6, resistance R 7, resistance R 8, resistance R 9, resistance R 10, resistance R 11, TL084 operational amplifier U2, TL084 operational amplifier U3, the outfan of AD620 integral instrument amplifier U1 connects one end of capacitor C 1, one end of the other end contact resistance R5 of capacitor C 1, the other end of resistance R 5 connects the input in the same way of TL084 operational amplifier U2, the other end of capacitor C 1 connects earth signal by resistance R 6, the other end of resistance R 5 connects earth signal by capacitor C 2, the reverse input end of TL084 operational amplifier U2 connects earth signal by resistance R 8, the reverse input end of operational amplifier U2 connects the outfan of TL084 operational amplifier U2 by resistance R 7, the outfan of TL084 operational amplifier U2 connects the input in the same way of TL084 operational amplifier U3 by capacitor C 3, the input in the same way of TL084 operational amplifier U3 connects earth signal by resistance R 9, the reverse input end of TL084 operational amplifier U3 connects earth signal by resistance R 10, the reverse input end of TL084 operational amplifier U3 connects the outfan of TL084 operational amplifier U3 by resistance R 11, capacitor C 5 is in parallel with resistance R 11, the outfan of TL084 operational amplifier U3 connects one end of capacitor C 4, the 7 pin connection+12V power supplys of AD620 integral instrument amplifier U1, the 4 pin connection-12V power supplys of AD620 integral instrument amplifier U1, TL084 operational amplifier U2, all connect-12V of the 11 pins power supply of TL084 operational amplifier U3, TL084 operational amplifier U2, all connect+12V of the 4 pins power supply of TL084 operational amplifier U3.
Trap circuit 5 comprises capacitor C 21, capacitor C 22, capacitor C 23, resistance R 21, resistance R 22, resistance R 23, resistance R 24, resistance R 25, TL084 operational amplifier U4, capacitor C 21, capacitor C 22 mutually series connection forms series circuit a, resistance R 21, resistance R 22 mutually series connection forms series circuit b, series circuit a and the series circuit b formation parallel circuit that is in parallel, one end of parallel circuit connects the input in the same way of TL084 operational amplifier U4, the other end of parallel circuit connects the other end of capacitor C 4, the junction point that capacitor C 21 is connected mutually with capacitor C 22 is connected the outfan of TL084 operational amplifier U4 by resistance R 23, resistance R 21 is connected earth signal with the junction point that resistance R 22 is connected mutually by capacitor C 23, the reverse input end of TL084 operational amplifier U4 connects the outfan of TL084 operational amplifier U4 by resistance R 24, the reverse input end of TL084 operational amplifier U4 also connects earth signal by resistance R 25, the 11 pin connection-12V power supplys of TL084 operational amplifier U4, the 4 pin connection+12V power supplys of TL084 operational amplifier U4.
Follower 6 comprises TL084 operational amplifier U5, the outfan of TL084 operational amplifier U4 connects the input in the same way of TL084 operational amplifier U5, the reverse input end of TL084 operational amplifier U5 connects the outfan of TL084 operational amplifier U5, the 11 pin connection-12V power supplys of TL084 operational amplifier U5, the 4 pin connection+12V power supplys of TL084 operational amplifier U5
Linear isolation amplifier 7 comprises 6N136 high speed optoelectronic isolator U7, for by+12V power conversion being+the MC78L05CP power conversion device U6 of 5V power supply, capacitor C 30, resistance R 39, resistance R 30, resistance R 31, resistance R 32, NPN audion Q1, the 3 pin connection+12V power supplys of MC78L05CP power conversion device U6, the 2 pin downlink connection earth signals of MC78L05CP power conversion device U6, 1 pin of MC78L05CP power conversion device U6 connects the base stage of NPN audion Q1 by resistance R 39, 1 pin of MC78L05CP power conversion device U6 also connects the colelctor electrode of NPN audion Q1 by resistance R 30, the emitter stage of NPN audion Q1 connects 2 pins of 6N136 high speed optoelectronic isolator U7, the base stage of NPN audion Q1 also connects one end of capacitor C 30, the other end of capacitor C 30 connects the outfan of TL084 operational amplifier U5, 3 pins of 6N136 high speed optoelectronic isolator U7 connect earth signal by resistance R 31, 5 pins of 6N136 high speed optoelectronic isolator U7 connect earth signal, 8 pins of 6N136 high speed optoelectronic isolator U7 connect 1 pin of MC78L05CP power conversion device U6, 8 pins of 6N136 high speed optoelectronic isolator U7 connect 6 pins of 6N136 high speed optoelectronic isolator U7 by resistance R 31.
Compensating circuit 8 comprises TL084 operational amplifier U8, TL084 operational amplifier U9, resistance R 41, resistance R 42, resistance R 43, capacitor C 41, 6 pins of 6N136 high speed optoelectronic isolator U7 connect the input in the same way of TL084 operational amplifier U8 by capacitor C 41, the input in the same way of TL084 operational amplifier U8 connects earth signal by resistance R 41, the reverse input end of TL084 operational amplifier U8 connects earth signal by resistance R 42, the reverse input end of TL084 operational amplifier U8 also connects the outfan of TL084 operational amplifier U8 by resistance R 43, the outfan of TL084 operational amplifier U8 connects the input in the same way of TL084 operational amplifier U9, the reverse input end of TL084 operational amplifier U9 connects the outfan of TL084 operational amplifier U9, TL084 operational amplifier U8, all connect-12V of the 11 pins power supply of TL084 operational amplifier U9, TL084 operational amplifier U8, all connect+12V of the 4 pins power supply of TL084 operational amplifier U9.
Preposing signal process circuit of the present utility model comprises pre-amplification circuit and active low-pass filter amplifying circuit, pre-amplification circuit connects active low-pass filter amplifying circuit, pre-amplification circuit comprises AD620 integral instrument amplifier U1, the high input impedance that pre-amplification circuit is made up of AD620, high cmrr, low noise, low drift pre-amplification circuit, the integral instrument amplifier AD620 of AD company, it is with the same differential basis that is enlarged into that is in parallel, outstanding advantages is that low-frequency noise is little, be 0.28 μ V from noise voltage p-p (peak-peak) value of 0.1Hz-10Hz, offset voltage, temperature is floated all very little, common mode rejection ratio is 110dB, bandwidth 120Hz (G=100).Therefore pre-amplification circuit is eliminated interference noise, is not subject to external disturbance, and active low-pass filter amplifying circuit plays the effect of low-pass filtering, voltage amplification, and signal is carried out to filtering, makes signal more accurate; Electrocardiosignal is because frequency is low, signal is little, therefore the power frequency of 50Hz is disturbed especially severe.Power frequency interference signals is obscured among electrocardiosignal by the distribution capacity in around instrument and equipment and human body, affect measurement effect, for the power frequency 50Hz removing in human body or measuring system disturbs, therefore need to be suppressed with trap circuit, trap circuit can well be removed power frequency 50Hz and disturb, make signal more accurate, linear isolation amplifier is for buffer action, 6N136 high speed optoelectronic isolator is applicable to the occasion higher to transfer of data rate request, 6N136 has low price, debugging is convenient, noise is little, isolation is high, the series of advantages such as the linearity is good, be widely used, linear isolation amplifier can have been eliminated the impact of external interference signals, therefore reliability is high, degree of accuracy is high, compensating circuit is the stability of the signal of photoelectricity isolation generation being done to further amplification and raising circuit, in compensating circuit, the reverse input end of TL084 operational amplifier U9 connects the outfan of TL084 operational amplifier U9, the impact of the change in resistance that has reduced to a great extent the unstable and load that display section circuit may exist on signal, improve the stability of circuit, reliability is high, and degree of accuracy is high, the number of electronic components that this utility model adopts is few, and electronic component cost is low, and therefore this utility model cost is low.
It should be noted that above what enumerate is only a kind of specific embodiment of the present utility model.Obviously, this utility model is not limited to above embodiment, can also have many distortion.
In a word, all distortion that those of ordinary skill in the art can directly derive or associate from the disclosed content of this utility model, all should think protection domain of the present utility model.
Claims (6)
1. an ecg signal acquiring circuit, it is characterized in that, be included in the electrode RA (1) of the right hand signal for extracting human body, be used for the electrode LA (2) of the left hand signal that extracts human body, be used for the electrode RL (3) of the left foot signal that extracts human body, preposing signal process circuit (4), trap circuit (5), follower (6), linear isolation amplifier (7), compensating circuit (8), described electrode RA (1) is all connected preposing signal process circuit (4) with electrode LA (2), described electrode RL (3) connects earth signal, described preposing signal process circuit (4) connects trap circuit (5), described trap circuit (5) connects follower (6), described follower (6) connects linear isolation amplifier (7), described linear isolation amplifier (7) connects compensating circuit (8).
2. a kind of ecg signal acquiring circuit according to claim 1, it is characterized in that, described preposing signal process circuit (4) comprises pre-amplification circuit and active low-pass filter amplifying circuit, described pre-amplification circuit connects active low-pass filter amplifying circuit, described pre-amplification circuit comprises AD620 integral instrument amplifier U1, resistance R 1, resistance R 2, resistance R 3, resistance R 4, described electrode RL connects earth signal by resistance R 3, described electrode LA connects the input in the same way of AD620 integral instrument amplifier U1 by resistance R 1, described electrode RA is by connecting the reverse input end of AD620 integral instrument amplifier U1 by resistance R 2, described active low-pass filter amplifying circuit comprises capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4, capacitor C 5, resistance R 5, resistance R 6, resistance R 7, resistance R 8, resistance R 9, resistance R 10, resistance R 11, resistance R 8, TL084 operational amplifier U2, TL084 operational amplifier U3, the outfan of described AD620 integral instrument amplifier U1 connects one end of capacitor C 1, one end of the other end contact resistance R5 of described capacitor C 1, the other end of described resistance R 5 connects the input in the same way of TL084 operational amplifier U2, the other end of described capacitor C 1 connects earth signal by resistance R 6, the other end of described resistance R 5 connects earth signal by capacitor C 2, the reverse input end of described TL084 operational amplifier U2 connects earth signal by resistance R 8, the reverse input end of described operational amplifier U2 connects the outfan of TL084 operational amplifier U2 by resistance R 7, the outfan of described TL084 operational amplifier U2 connects the input in the same way of TL084 operational amplifier U3 by capacitor C 3, the input in the same way of described TL084 operational amplifier U3 connects earth signal by resistance R 9, the reverse input end of described TL084 operational amplifier U3 connects earth signal by resistance R 10, the reverse input end of described TL084 operational amplifier U3 connects the outfan of TL084 operational amplifier U3 by resistance R 11, described capacitor C 5 is in parallel with resistance R 11, the outfan of described TL084 operational amplifier U3 connects capacitor C 4, the 7 pin connection+12V power supplys of described AD620 integral instrument amplifier U1, the 4 pin connection-12V power supplys of described AD620 integral instrument amplifier U1, described TL084 operational amplifier U2, all connect-12V of the 11 pins power supply of TL084 operational amplifier U3, described TL084 operational amplifier U2, all connect+12V of the 4 pins power supply of TL084 operational amplifier U3.
3. a kind of ecg signal acquiring circuit according to claim 1, it is characterized in that, described trap circuit (5) comprises capacitor C 21, capacitor C 22, capacitor C 23, resistance R 21, resistance R 22, resistance R 23, resistance R 24, resistance R 25, TL084 operational amplifier U4, described capacitor C 21, capacitor C 22 mutually series connection forms series circuit a, resistance R 21, resistance R 22 mutually series connection forms series circuit b, described series circuit a and the series circuit b formation parallel circuit that is in parallel, described parallel circuit connects the input in the same way of TL084 operational amplifier U4, the junction point that described capacitor C 21 is connected mutually with capacitor C 22 is connected the outfan of TL084 operational amplifier U4 by resistance R 23, described resistance R 21 is connected earth signal with the junction point that resistance R 22 is connected mutually by capacitor C 23, the reverse input end of described TL084 operational amplifier U4 connects the outfan of TL084 operational amplifier U4 by resistance R 24, the reverse input end of described TL084 operational amplifier U4 also connects earth signal by resistance R 25, the 11 pin connection-12V power supplys of described TL084 operational amplifier U4, the 4 pin connection+12V power supplys of described TL084 operational amplifier U4.
4. a kind of ecg signal acquiring circuit according to claim 1, it is characterized in that, described follower (6) comprises TL084 operational amplifier U5, the reverse input end of TL084 operational amplifier U5 connects the outfan of TL084 operational amplifier U5, the 11 pin connection-12V power supplys of described TL084 operational amplifier U5, the 4 pin connection+12V power supplys of described TL084 operational amplifier U5.
5. a kind of ecg signal acquiring circuit according to claim 1, it is characterized in that, described linear isolation amplifier (7) comprises 6N136 high speed optoelectronic isolator U7, for by+12V power conversion being+the MC78L05CP power conversion device U6 of 5V power supply, capacitor C 30, resistance R 39, resistance R 30, resistance R 31, resistance R 32, NPN audion Q1, the 3 pin connection+12V power supplys of described MC78L05CP power conversion device U6, the 2 pin downlink connection earth signals of described MC78L05CP power conversion device U6, 1 pin of described MC78L05CP power conversion device U6 connects the base stage of NPN audion Q1 by resistance R 39, 1 pin of described MC78L05CP power conversion device U6 also connects the colelctor electrode of NPN audion Q1 by resistance R 30, the emitter stage of described NPN audion Q1 connects 2 pins of 6N136 high speed optoelectronic isolator U7, the base stage of described NPN audion Q1 also connects capacitor C 30, 3 pins of described 6N136 high speed optoelectronic isolator U7 connect earth signal by resistance R 31, 5 pins of described 6N136 high speed optoelectronic isolator U7 connect earth signal, 8 pins of described 6N136 high speed optoelectronic isolator U7 connect 1 pin of MC78L05CP power conversion device U6, 8 pins of described 6N136 high speed optoelectronic isolator U7 connect 6 pins of 6N136 high speed optoelectronic isolator U7 by resistance R 31.
6. a kind of ecg signal acquiring circuit according to claim 1, it is characterized in that, described compensating circuit (8) comprises TL084 operational amplifier U8, TL084 operational amplifier U9, resistance R 41, resistance R 42, resistance R 43, capacitor C 41, described capacitor C 41 connects the input in the same way of TL084 operational amplifier U8, the input in the same way of described TL084 operational amplifier U8 connects earth signal by resistance R 41, the reverse input end of described TL084 operational amplifier U8 connects earth signal by resistance R 42, the reverse input end of described TL084 operational amplifier U8 also connects the outfan of TL084 operational amplifier U8 by resistance R 43, the outfan of described TL084 operational amplifier U8 connects the input in the same way of TL084 operational amplifier U9, the reverse input end of described TL084 operational amplifier U9 connects the outfan of TL084 operational amplifier U9, described TL084 operational amplifier U8, all connect-12V of the 11 pins power supply of TL084 operational amplifier U9, described TL084 operational amplifier U8, all connect+12V of the 4 pins power supply of TL084 operational amplifier U9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420433047.2U CN203970389U (en) | 2014-07-28 | 2014-07-28 | A kind of ecg signal acquiring circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420433047.2U CN203970389U (en) | 2014-07-28 | 2014-07-28 | A kind of ecg signal acquiring circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203970389U true CN203970389U (en) | 2014-12-03 |
Family
ID=51967864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420433047.2U Expired - Fee Related CN203970389U (en) | 2014-07-28 | 2014-07-28 | A kind of ecg signal acquiring circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203970389U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105496393A (en) * | 2015-12-28 | 2016-04-20 | 哈尔滨恒誉名翔科技有限公司 | Intelligent electrocardiogram monitoring system |
| CN108111130A (en) * | 2017-12-29 | 2018-06-01 | 西安柒凌防务科技有限公司 | A kind of amplifying circuit for infrared detection system |
| CN110269606A (en) * | 2019-08-05 | 2019-09-24 | 东北大学 | A kind of 32 road electrocardio of combined type/electromyographic signal collection system |
-
2014
- 2014-07-28 CN CN201420433047.2U patent/CN203970389U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105496393A (en) * | 2015-12-28 | 2016-04-20 | 哈尔滨恒誉名翔科技有限公司 | Intelligent electrocardiogram monitoring system |
| CN108111130A (en) * | 2017-12-29 | 2018-06-01 | 西安柒凌防务科技有限公司 | A kind of amplifying circuit for infrared detection system |
| CN110269606A (en) * | 2019-08-05 | 2019-09-24 | 东北大学 | A kind of 32 road electrocardio of combined type/electromyographic signal collection system |
| CN110269606B (en) * | 2019-08-05 | 2021-09-24 | 东北大学 | Combined 32-channel electrocardio/electromyogram signal acquisition system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203970389U (en) | A kind of ecg signal acquiring circuit | |
| CN102551727B (en) | Respiratory information detecting method and device | |
| CN107144719A (en) | A kind of high-precision testing weak signals instrument and method of testing | |
| CN104917471A (en) | Acquisition and amplification circuit for physiological signals | |
| CN202975066U (en) | High-impedance active differential probe circuit | |
| CN104000583A (en) | Electrocardiosignal preamplifier circuit | |
| CN203464953U (en) | Measurement system based on digital isolation | |
| CN202161408U (en) | High-frequency electrotome interference suppression circuit | |
| CN106840470B (en) | A kind of bridge type pressure sensor output signal acquisition device and method | |
| Singh et al. | Labview based ECG patient monitoring system for cardiovascular patient using SMTP Technology | |
| Eilebrecht et al. | A capacitive ECG array with visual patient feedback | |
| CN103654773B (en) | Electroencephalo experimental teaching unit | |
| Lin et al. | Design and development of standard 12-lead ECG data acquisition and monitoring system | |
| CN104038161A (en) | Module for amplifying signals in gas concentration detection system of transformer substation | |
| CN104706344A (en) | Electrocardiosignal measurement collecting system | |
| CN209590067U (en) | Signal acquiring system | |
| CN204517764U (en) | A kind of enlarge leadingly filter circuit for DIT | |
| CN201847675U (en) | Pulse signal processing circuit based on PVDF (polyvinylidene fluoride) sensor | |
| CN202340219U (en) | Circuit for preprocessing low voltage signal in analog circuit | |
| CN203122375U (en) | Non-invasive blood pressure anti-interference circuit | |
| Ji et al. | An active electrode design for weak biosignal measurements | |
| CN205697751U (en) | Bioelectric signal measuring apparatus | |
| CN105640550A (en) | Electroencephalogram collecting front-end design based on INA128 | |
| CN203933554U (en) | A kind of intelligent ultra-weak electronic signal measurement by magnification system | |
| CN203935184U (en) | A kind of electrocardiosignal pre-amplification circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20150728 |
|
| EXPY | Termination of patent right or utility model |