CN206166917U - Anesthesia monitor data acquisition device - Google Patents
Anesthesia monitor data acquisition device Download PDFInfo
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- CN206166917U CN206166917U CN201620957369.6U CN201620957369U CN206166917U CN 206166917 U CN206166917 U CN 206166917U CN 201620957369 U CN201620957369 U CN 201620957369U CN 206166917 U CN206166917 U CN 206166917U
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- amplifier
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- resistance
- filter circuit
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Abstract
The utility model belongs to the technical field of the data acquisition technique and specifically relates to an anesthesia monitor data acquisition device. It is including the EEG, preamplification circuit, high -pass filter circuit, secondary amplifier circuit, low pass filter circuit, power frequency trap, cubic amplifier circuit, AD converting circuit and the controller that connect gradually, preamplification circuit connection has DA compensating circuit, is the controller connected with alarm, pilot lamp and RS 485 the interface. The utility model discloses a EEG monitors human EEG signal, then reflects human narcosis according to the EEG signal who monitors, simultaneously, utilize a plurality of amplifier circuit to carry out a lot of with the signal, guarantee at signal intensity, and, utilize DA compensating circuit to carry out the DA compensation to the preamplification circuit, detach the potential difference interference that the input exists, its simple structure, convenient operation has very strong practicality.
Description
Technical field
The utility model is related to data acquisition technology field, especially a kind of anesthesia monitor data acquisition device.
Background technology
It is well known that anesthesia is the important part of current clinical medicine.Rational anesthesia can be in patient's analgesia
In the case of performed the operation, make patient from unnecessary pain, be also convenient for doctor's normal work.Scientific and reasonable judgement is simultaneously controlled
Making suitable depth of anesthesia has turned into clinical problem in the urgent need to address.The monitoring of depth of anesthesia is conducive to controlling anesthetic
Amount, optimal anesthesia medical effect is reached using minimum anaesthetic.Therefore, the collection of Anesthesia Monitoring data then turns into and carries
The premise of height anesthesia medical effect.
At present, there is interference in existing human body anesthesia data acquisition device generally existing data, and signal is not accurate enough.
Utility model content
For above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of height accurately to anaesthetize
Patient monitor data acquisition device.
To achieve these goals, the utility model is adopted the following technical scheme that：
A kind of anesthesia monitor data acquisition device, it includes eeg sensor, pre-amplification circuit, high-pass filtering electricity
Road, secondary amplifying circuit, low-pass filter circuit, notch filter circuit, No. three amplifying circuits, A/D change-over circuits and controllers；
Eeg sensor monitoring human body electroencephalogram's signal is simultaneously input a signal into pre-amplification circuit, the preposition amplification
Signal is amplified and input a signal into high-pass filtering circuit by circuit, and signal is carried out high pass filter by the high-pass filtering circuit
Ripple is processed and input a signal into secondary amplifying circuit, and signal is carried out secondary amplification and signal is defeated by the secondary amplifying circuit
Enter to low-pass filter circuit, signal is carried out LPF and input a signal into notch filter electricity by the low-pass filter circuit
Signal is carried out trap and processes and input a signal into No. three amplifying circuits, three amplifications by road, the notch filter circuit
Signal is amplified for three times and input a signal into A/D change-over circuits by circuit, and signal is carried out A/D conversions by the A/D change-over circuits
And input a signal into controller；
The pre-amplification circuit is connected with D/A compensation circuits, and the controller is connected with alarm, indicator lamp and RS-
485 interfaces.
Preferably, the pre-amplification circuit includes instrument amplifier and the first adjustable resistance, and the instrument amplifier is
AD620 amplifiers, the in-phase end of the instrument amplifier passes through the second resistance being sequentially connected in series and the second diode and brain fax
Sensor is connected and by the 3rd capacity earth, and the end of oppisite phase of the instrument amplifier passes through the first resistor and first being sequentially connected in series
Diode is connected and by the first capacity earth with eeg sensor, and the in-phase end and end of oppisite phase of the instrument amplifier are parallel with
Second electric capacity, first adjustable resistance is parallel on the 1 end pin and 8 end pin of instrument amplifier, 5 ends of the instrument amplifier
Pin is connected with D/A compensation circuits, and the output end of the instrument amplifier is connected with high-pass filtering circuit.
Preferably, the D/A compensation circuits include D/A converter, the first amplifier and the second amplifier, the D/A converter
Be LTC159 converters, the output end of the D/A converter is connected with the end of oppisite phase of the first amplifier, first amplifier it is anti-phase
End is connected by the 8th electric capacity with 2 end pin of D/A converter and the output end of itself, and the output end of first amplifier passes through the
Four resistance are connected with the end of oppisite phase of the second amplifier, and the output end of second amplifier is connected with pre-amplification circuit.
Preferably, the notch filter circuit includes the 3rd amplifier, four high guaily unit, the second adjustable resistance and the 3rd adjustable electric
Resistance, the end of oppisite phase of the 3rd amplifier passes through the 11st electric capacity being sequentially connected in series and the 6th resistance is connected with low-pass filter circuit,
Be connected with the output end of the 3rd amplifier by the tenth electric capacity between 6th resistance and the 11st electric capacity, by the 7th resistance with
The adjustable end connection of the second adjustable resistance, the fixing end ground connection of second adjustable resistance, the end of oppisite phase of the 3rd amplifier leads to
Cross the 8th resistance to be connected with the output end of itself, the output end of the 3rd amplifier is connected with the fixing end of the 3rd adjustable resistance,
The adjustable end of the 3rd adjustable resistance is connected by the 9th resistance with the end of oppisite phase of four high guaily unit, the four high guaily unit it is anti-phase
End is connected by the 11st resistance with low-pass filter circuit, and the end of oppisite phase of the four high guaily unit is defeated with itself by the tenth resistance
Go out end connection, the output end of the four high guaily unit is connected with No. three amplifying circuits.
As a result of such scheme, the utility model monitors human body electroencephalogram's signal by eeg sensor, according to monitoring
EEG signals then reflect human body narcosis；Meanwhile, signal is carried out repeatedly using multiple amplifying circuits, it is ensured that strong in signal
Degree；Also, D/A compensation is carried out to pre-amplification circuit using D/A compensation circuits, the potential difference interference that input is present is removed,
Its simple structure, it is easy to operate, with very strong practicality.
Brief description of the drawings
Fig. 1 is the principle schematic diagram. of the utility model embodiment；
Fig. 2 is the electrical block diagram of the pre-amplification circuit of the utility model embodiment；
Fig. 3 is the electrical block diagram of the D/A compensation circuits of the utility model embodiment；
Fig. 4 is the electrical block diagram of the notch filter circuit of the utility model embodiment.
Specific embodiment
Embodiment of the present utility model is described in detail below in conjunction with accompanying drawing, but the utility model can be by right
It is required that the multitude of different ways for limiting and covering is implemented.
As shown in Figures 1 to 4, a kind of anesthesia monitor data acquisition device that the present embodiment is provided, it includes brain fax
Sensor 1, pre-amplification circuit 2, high-pass filtering circuit 3, secondary amplifying circuit 4, low-pass filter circuit 5, notch filter circuit 6,
(controller 9 of the present embodiment can be using STM32F103RB controls for No. three amplifying circuits 7, A/D change-over circuits 8 and controllers 9
Device)；
Eeg sensor 1 is monitored human body electroencephalogram's signal and is input a signal into pre-amplification circuit 2, pre-amplification circuit 2
Signal is amplified and input a signal into high-pass filtering circuit 3, signal is carried out high-pass filtering treatment by high-pass filtering circuit 3
And input a signal into secondary amplifying circuit 4, signal is carried out secondary amplification and input a signal into low pass by secondary amplifying circuit 4
Signal is carried out LPF and input a signal into notch filter circuit 6, notch filter by filter circuit 5, low-pass filter circuit 5
Signal is carried out trap and processes and input a signal into No. three amplifying circuits 7 by circuit 6, and No. three amplifying circuits 7 put signal for three times
Big and input a signal into A/D change-over circuits 8, signal is carried out A/D and changes and input a signal into control by A/D change-over circuits 8
Device 9；Pre-amplification circuit 2 is connected with D/A compensation circuits 10, and controller 9 is connected with alarm 11, indicator lamp 12 and RS-485 and connects
Mouth 13.
The present embodiment can then be analyzed using human body EEG signals after the detection anesthesia of eeg sensor 1 using EEG signals
Patient's narcosis.And the data-signal for collecting then carries out the preliminary enhanced processing of signal using pre-amplification circuit 2,
In no extrinsic motivated signal, it is poor that the input of pre-amplification circuit there will still likely be small natural potential, and this is electric
Potential difference is that measurement is unwanted, it is therefore necessary to tries to be eliminated, therefore is carried out the interference of potential difference using D/A compensation circuits 10
Removal, then further to strengthen signal precisely, so as to carry out high-pass filtering and low-pass filtering treatment to signal, to prevent high pass
Signal is less than normal after filtering and LPF, therefore is respectively equipped with secondary putting after high-pass filtering circuit 3 and low-pass filter circuit 5
Big circuit 4 and No. three amplifying circuits 7, wherein then using notch filter electricity between No. three amplifying circuits 7 and low-pass filter circuit 5
Road 6 eliminates civil power Hz noise.Additionally, the present embodiment carries out early warning report using alarm 11 and indicator lamp 12 and state refers to
Show, and the outside transmission of data-signal is realized using RS-485 interfaces 13.
The pre-amplification circuit 2 of the present embodiment can use circuit structure as shown in Figure 2, i.e., including instrument amplifier U1 and
First adjustable resistance RX1, instrument amplifier U1 are AD620 amplifiers, and the in-phase end of instrument amplifier U1 passes through what is be sequentially connected in series
Second resistance R2 and the second diode D2 are connected with eeg sensor 1 and are grounded by the 3rd electric capacity C3, instrument amplifier U1's
End of oppisite phase passes through the first resistor R1 being sequentially connected in series and the first diode D1 is connected and by the first electric capacity C1 with eeg sensor 1
Ground connection, the in-phase end and end of oppisite phase of instrument amplifier U1 are parallel with the second electric capacity C2, and the first adjustable resistance RX1 is parallel to instrument and puts
On the 1 end pin and 8 end pin of big device U1, the 5 end pin of instrument amplifier U1 are connected with D/A compensation circuits 10, instrument amplifier U1's
Output end is connected with high-pass filtering circuit 3.This circuit mainly carries out signal amplification by instrument amplifier U1, is amplified using instrument
The first electric capacity C1, the second electric capacity C2 and the 3rd electric capacity C3 that device U1 front ends are set carry out input filter treatment, and can using first
Adjusting resistance RX1 carries out resistance regulation, so as to the work for realizing instrument amplifier U1 is adjusted.
Meanwhile, in no extrinsic motivated signal, it is poor that two inputs of amplifier there will still likely be small natural potential,
And this potential difference is that measurement is unwanted, it is therefore necessary to try to be eliminated.Therefore add D/A to mend at pre-amplification circuit 2
Repay circuit 10, the D/A compensation circuits 10 of the present embodiment can use circuit structure as shown in Figure 3, i.e., including D/A converter U2,
First amplifier A1 and the second amplifier A2, D/A converter U2 are LTC159 converters, the output end of D/A converter U2 and the first fortune
Put the end of oppisite phase connection of A1, the end of oppisite phase of the first amplifier A1 by the 2 end pin of the 8th electric capacity C8 and D/A converter U2 and itself
Output end is connected, and the output end of the first amplifier A1 is connected by the 4th resistance R4 with the end of oppisite phase of the second amplifier A2, the second amplifier
The output end of A2 is connected with pre-amplification circuit 2.Wherein D/A converter 10 uses LTC1596, and the first amplifier A1 is added afterwards
(LT1112) current value, is converted into magnitude of voltage, after an add circuit is realized by the second amplifier A2 (LT1112) again, realize from negative
Output of the reference voltage to reference voltage.
The present embodiment is by 50Hz Hz noises using mains-supplied, the EEG signals for collecting is submerged in interference
In, notch filter circuit 6 is provided with to eliminate Hz noise, this notch filter circuit 6 can be used as shown in figure 4, including
3rd amplifier A3, four high guaily unit A4, the second adjustable resistance RX2 and the 3rd adjustable resistance RX3, the end of oppisite phase of the 3rd amplifier A3 pass through
The 11st electric capacity C11 being sequentially connected in series and the 6th resistance R6 are connected with low-pass filter circuit 5, the 6th resistance R6 and the 11st electric capacity
Be connected with the output end of the 3rd amplifier A3 by the tenth electric capacity C10 between C11, by the 7th resistance R7 and the second adjustable resistance
The adjustable end connection of RX2, the fixing end ground connection of the second adjustable resistance RX2, the end of oppisite phase of the 3rd amplifier A3 passes through the 8th resistance R8
It is connected with the output end of itself, the output end of the 3rd amplifier A3 is connected with the fixing end of the 3rd adjustable resistance RX3, the 3rd adjustable electric
The adjustable end for hindering RX3 is connected by the 9th resistance R9 with the end of oppisite phase of four high guaily unit A4, and the end of oppisite phase of four high guaily unit A4 passes through the
11 resistance R11 are connected with low-pass filter circuit 5, and the end of oppisite phase of four high guaily unit A4 is by the tenth resistance R10 and the output of itself
End connection, the output end of four high guaily unit A4 is connected with No. three amplifying circuits 7.
Preferred embodiment of the present utility model is these are only, the scope of the claims of the present utility model is not thereby limited, it is every
The equivalent structure or equivalent flow conversion made using the utility model specification and accompanying drawing content, or be directly or indirectly used in
Other related technical fields, are similarly included in scope of patent protection of the present utility model.
Claims (4)
1. a kind of anesthesia monitor data acquisition device, it is characterised in that：It includes eeg sensor, pre-amplification circuit, height
Bandpass filter circuit, secondary amplifying circuit, low-pass filter circuit, notch filter circuit, No. three amplifying circuits, A/D change-over circuits and
Controller；
Eeg sensor monitoring human body electroencephalogram's signal is simultaneously input a signal into pre-amplification circuit, the pre-amplification circuit
Signal is amplified and input a signal into high-pass filtering circuit, the high-pass filtering circuit carries out at high-pass filtering signal
Manage and input a signal into secondary amplifying circuit, the secondary amplifying circuit by signal carry out it is secondary amplification and input a signal into
Signal is carried out LPF and input a signal into notch filter circuit, institute by low-pass filter circuit, the low-pass filter circuit
State notch filter circuit signal is carried out into trap and process and input a signal into No. three amplifying circuits, No. three amplifying circuits will
Signal amplifies for three times and inputs a signal into A/D change-over circuits, and signal is carried out A/D and changes and will believe by the A/D change-over circuits
Number input is to controller；
The pre-amplification circuit is connected with D/A compensation circuits, and the controller is connected with alarm, indicator lamp and RS-485 and connects
Mouthful.
2. a kind of anesthesia monitor data acquisition device as claimed in claim 1, it is characterised in that：The pre-amplification circuit
Including instrument amplifier and the first adjustable resistance, the instrument amplifier is AD620 amplifiers, the same phase of the instrument amplifier
End is connected and by the 3rd capacity earth, the instrument by the second resistance being sequentially connected in series and the second diode with eeg sensor
The end of oppisite phase of table amplifier passes through the first resistor being sequentially connected in series and the first diode is connected and by first with eeg sensor
Capacity earth, the in-phase end and end of oppisite phase of the instrument amplifier are parallel with the second electric capacity, and first adjustable resistance is parallel to
On the 1 end pin and 8 end pin of instrument amplifier, 5 end pin of the instrument amplifier are connected with D/A compensation circuits, and the instrument is put
The output end of big device is connected with high-pass filtering circuit.
3. a kind of anesthesia monitor data acquisition device as claimed in claim 2, it is characterised in that：The D/A compensation circuits
Including D/A converter, the first amplifier and the second amplifier, the D/A converter is LTC159 converters, the D/A converter
Output end is connected with the end of oppisite phase of the first amplifier, and the end of oppisite phase of first amplifier is by the 8th electric capacity and 2 ends of D/A converter
Pin and the output end of itself are connected, and the output end of first amplifier is connected by the 4th resistance with the end of oppisite phase of the second amplifier,
The output end of second amplifier is connected with pre-amplification circuit.
4. a kind of anesthesia monitor data acquisition device as claimed in claim 3, it is characterised in that：The notch filter circuit
Including the 3rd amplifier, four high guaily unit, the second adjustable resistance and the 3rd adjustable resistance, the end of oppisite phase of the 3rd amplifier is by successively
11st electric capacity and the 6th resistance of series connection are connected with low-pass filter circuit, pass through between the 6th resistance and the 11st electric capacity
Tenth electric capacity is connected with the output end of the 3rd amplifier, is connected with the adjustable end of the second adjustable resistance by the 7th resistance, and described
The fixing end ground connection of two adjustable resistances, the end of oppisite phase of the 3rd amplifier is connected by the 8th resistance with the output end of itself, institute
The output end for stating the 3rd amplifier is connected with the fixing end of the 3rd adjustable resistance, and the adjustable end of the 3rd adjustable resistance passes through the 9th
Resistance is connected with the end of oppisite phase of four high guaily unit, and the end of oppisite phase of the four high guaily unit is connected by the 11st resistance with low-pass filter circuit
Connect, the end of oppisite phase of the four high guaily unit is connected by the tenth resistance with the output end of itself, the output end of the four high guaily unit with
No. three amplifying circuit connections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620957369.6U CN206166917U (en) | 2016-08-26 | 2016-08-26 | Anesthesia monitor data acquisition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620957369.6U CN206166917U (en) | 2016-08-26 | 2016-08-26 | Anesthesia monitor data acquisition device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206166917U true CN206166917U (en) | 2017-05-17 |
Family
ID=60240681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620957369.6U Expired - Fee Related CN206166917U (en) | 2016-08-26 | 2016-08-26 | Anesthesia monitor data acquisition device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206166917U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109893734A (en) * | 2019-04-24 | 2019-06-18 | 庞娟莹 | Anesthetic gas machine based on artificial intelligence |
-
2016
- 2016-08-26 CN CN201620957369.6U patent/CN206166917U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109893734A (en) * | 2019-04-24 | 2019-06-18 | 庞娟莹 | Anesthetic gas machine based on artificial intelligence |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170517 Termination date: 20190826 |