CN2361227Y - Digital EEG detecting terminal - Google Patents
Digital EEG detecting terminal Download PDFInfo
- Publication number
- CN2361227Y CN2361227Y CN 98232313 CN98232313U CN2361227Y CN 2361227 Y CN2361227 Y CN 2361227Y CN 98232313 CN98232313 CN 98232313 CN 98232313 U CN98232313 U CN 98232313U CN 2361227 Y CN2361227 Y CN 2361227Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- computer
- digital conversion
- eeg signals
- digital
- 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
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Abstract
The utility model relates to a digital EEG detecting terminal which belongs to a medical appliance. The digital EEG detecting terminal is formed by connecting an EEG signal amplifying circuit, an analog-digital conversion and computer interface circuit, a flush-bonding veneer PC computer, a solid-state electronic disk and a liquid crystal display screen. The utility model combines the EEG signal amplifier, a digital interface, a screen signal display and digital communication and storage into a whole. The utility model has the characteristics of small volume, convenient carryover, strong disturbance-resisting capacity, and easy operation and use. The digital EEG detecting terminal can display, record and play back the brain-wave shape of the detected person independently for a long time, and the digital EEG detecting terminal can also transmit the EEG signal to other devices in real time in the form of digitalization through a serial line interface.
Description
This utility model relates to a kind of brain electro-detection instrument, belong to medical apparatus and instruments, especially a kind of volume is urinated in carrying, both can independently use, long-time demonstration, record, playback measured brain wave patterns, can with digitized forms EEG signals be passed to the brain electro-detection instrument of other equipment in real time by RS232 serial computer interface again, form medical treatment and detect a terminal in the network.
It is one of key equipment of hospital's Neurology Department inspection that electroencephalogram detects.But existing electroencephalograph exists volume big, is difficult for moving; Input impedance is little, is subject to disturb; Easily temperature influence produces drift; Signal is output as on paper and traces, and long-time the detection consumes greatly the cost height; And need manually to adjust time constant when detecting, set filtering, unfavorable factors such as amplification.On the other hand, along with the development of medical science and technology in recent years, people have had darker understanding to brain wave, and clinical requirement carries out complicated mathematical to brain wave.These all existing electroencephalographs can't be finished.
The purpose of this utility model provides a kind of digitized brain electro-detection terminal, and is little to constitute a volume, manipulates easy and can the EEG signals real-time Transmission be given the brain wave checkout equipment of miscellaneous equipment with digitized forms.
The purpose of this utility model is achieved in that by EEG signals amplifying circuit, analog digital conversion and computer interface circuit, embedded board PC computer, solid-state electronic dish and display screen and is formed by connecting, the input of the outfan of EEG signals amplifying circuit and analog digital conversion and computer interface circuit joins, the output interface of analog digital conversion and computer interface circuit is pressed embedded board PC computer, and embedded board PC computer joins with solid-state electronic dish and display screen.
EEG signals amplifying circuit of the present utility model is the Pyatyi amplifying circuit, usually be provided with 16 the tunnel, send into after 16 tunnel EEG signals are amplified and be connected to embedded board PC computer bus interface XTSLOT after analog-digital converter is converted to digital signal, embedded board PC computer is presented at signal pattern on the display screen through the VGA interface on the machine, and be stored in the solid-state electronic dish, under operator's instruction control, also can send digital signal to miscellaneous equipment through the RS232 interface.
This utility model with EEG signals amplifier and digital interface, screen signal show, digitized communication and storage be integrated, have volume urinate in carry, capacity of resisting disturbance is strong, manipulate easy characteristics.It both can independently use, and long-time demonstration, record, playback measured brain electricity electrical waveform can be passed to EEG signals other equipment again in real time by RS232 serial computer interface with digitized forms.
Fig. 1 is the circuit structure block diagram of an embodiment of this utility model.
Fig. 2 is a road EEG signals amplification circuit diagram among embodiment of this utility model.
Fig. 3 is analog digital conversion and the computer interface circuit diagram among embodiment of this utility model.
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing, combine by 16 tunnel EEG signals amplifying circuits, analog digital conversion and computer interface circuit, embedded board PC computer, LCDs, solid-state electronic dish.Fig. 2 is one tunnel EEG signals amplifying circuit, comprises A
1: A, A
1: B, A
2: A, A
2: B, A
2: C, A
2: six linear amplifiers of D, A
1: A and A
1: B is two linear amplifiers on the integrated circuit, A
2: A, A
2: B, A
2: C and A
2: D is four linear amplifiers on the integrated circuit, the positive termination A of the EEG signals of input
1: the L of A
1End, negative terminal meets A
1: the B end of B, linear amplifier A
1: A is through resistance R
1, R
2With potentiometer W
1Wiring amplifier A
1: B, again through potentiometer W
1And resistance R
3, R
4Ground connection is formed the anti-common-mode signal amplifying circuit of high input impedance, adjusts potentiometer and can make this amplifying circuit form the effect of best anti-common-mode signal, linear amplifier A
2: 1 end of A is through capacitor C
1, potentiometer W
2, resistance R
9Ground connection, the time constant control circuit of formation circuit is adjusted potentiometer W
2Can reduce because C
1And R
9The difference of each road time constant of causing of discreteness, circuit shown in Figure 2 has 16 the tunnel in this digitized brain electro-detection terminal, the output on each road is connected to the S in Fig. 3 analog digital conversion and the computer interface circuit respectively
1To S
16, analog digital conversion and computer interface circuit are made of U analog-digital conversion ic, decoder, NAND gate circuit, voltage stable circuit and resistance, electric capacity
1And U
2Be two 12 analog-digital converters, the EEG signals after amplifying 16 tunnel is converted to the EBI XTSLOT that delivers to embedded board PC computer behind the digital signal, the A of embedded board PC computer bus
24, A
23, A
22U in the map interlinking 3
31,2,3, B
13, B
14Meet U
4: 1,2 of A, U
4: 3 of A meets U
36, constitute decoding circuit, embedded board PC computer can be by specific address to U through this decoding circuit
1, U
2Carry out the reading and writing operation, V
1Be manostat, supply with U
1, U
2Carry out the accurate reference voltage that analog digital conversion is used.
Resistance R among Fig. 3
16Connect capacitor C
5Constitute U
1Electric source filter circuit, resistance R
17Connect capacitor C
7Constitute U
2Electric source filter circuit, the power supply medium-high frequency that causes in the time of reducing computer operation is effectively disturbed analog to digital conversion circuit U
1And U
2Influence.
In the present embodiment, A in the EEG signals amplifying circuit
1: A and A
1: B forms input stage circuit, and the EEG signals positive pole connects the L end, and negative pole connects the B end, tentatively amplifies after A
1: the 1 end output of A is through second utmost point amplifier A
2: the input resistance R of A
5Enter A
2: A amplifies, A
2: the outfan 1 of A meets C
1, W
2, R
9The high pass filter of forming, potentiometer W
2Through resistance R
9Ground connection, the time constant control circuit of formation circuit is adjusted potentiometer W
2Can reduce because C
1And R
9The difference of each road time constant of causing of discreteness.By C
1With W
2Junction point export filtered signal to third level amplifier A
2: B, A
2: the outfan 7 of B is through resistance R
14Meet fourth stage amplifier A
2: C, fourth stage amplifier is output as A
2: 8 ends of C, through R
15Meet level V amplifier A
2: D, the level V amplifier is output as A
2: 14 ends of D, through aerial lug S
1Be connected to the input S of analog to digital conversion circuit
1, other inputs S of analog digital conversion shown in Figure 3 and computer interface circuit
2To S
16Connect the outfan of other road EEG signals amplifying circuit, S in the 1st to 8 tunnel EEG signals map interlinkings 3 after amplifying
1To S
8End is connected to U
1Input 16 to 23 ends, the S in the EEG signals map interlinking 3 after the 9th to 16 tunnel amplifications
9To S
16, be connected to U
2Input 16 to 23 ends, U
1And U
2Be two 12 analog-digital converters, the EEG signals after the amplification is through U
1, U
2Be connected to embedded board PC computer bus interface XTSLOT after being converted to digital signal, VGA interface on the embedded board PC computer is presented at signal pattern on the LCDs, and be stored on the solid-state electronic dish, under operator's instruction control, also can send digital signal to miscellaneous equipment through the RS232 interface.
Claims (6)
1, a kind of digitized brain electro-detection terminal, it is characterized in that being formed by connecting by EEG signals amplifying circuit, analog digital conversion and computer interface circuit, embedded board PC computer, solid-state electronic dish and display screen, the input of the outfan of EEG signals amplifying circuit and analog digital conversion and computer interface circuit joins, the output interface of analog digital conversion and computer interface circuit connects embedded board PC computer, and embedded board PC computer joins with solid-state electronic dish and display screen.
2, by the described digitized brain of claim 1 electro-detection terminal, it is characterized in that described EEG signals amplifying circuit is provided with 16 the tunnel altogether, the output on each road is connected to the S in analog digital conversion and the computer interface circuit respectively
1To S
16
3, by claim 1 or 2 described digitized brain electro-detection terminals, it is characterized in that described EEG signals amplifying circuit comprises A
1: A, A
1: B, A
2: A, A
2: B, A
2: C, A
2: six linear amplifiers of D, A
1: A and A
1: B is two linear amplifiers on the integrated circuit, A
2: A, A
2: B, A
2: C and A
2: D is four linear amplifiers on the integrated circuit, the positive termination A of the EEG signals of input
1: the L of A
1End, negative terminal meets A
1: the B end of B, A
1: A is through resistance R
1, R
2With potentiometer W
1Meet A
1: B, again through W
1And resistance R
3, R
4Ground connection, the anti-common-mode signal amplifying circuit of composition high input impedance, A
2: 1 end of A is through capacitor C
1, potentiometer W
2, resistance R
9Ground connection, the time constant control circuit of formation circuit.
4,, it is characterized in that analog digital conversion and reach the computer interface circuit forming U by analog-digital conversion ic, decoder, NAND gate circuit, voltage stable circuit and resistance, electric capacity by claim 1 or 2 described digitized brain electro-detection terminals
1And U
2Be two 12 analog-digital converters, the EEG signals after amplifying 16 tunnel is converted to the EBI XTSLOT that delivers to embedded board PC computer behind the digital signal, the A of embedded board PC computer bus
24, A
23, A
22Meet U
31,2,3, B
13, B
14Meet U
4: 1,2 of A, U
4: 3 of A meets U
36, constitute decoding circuit.
5, by the described digitized brain of claim 4 electro-detection terminal, it is characterized in that resistance R in the voltage stable circuit in analog digital conversion and the computer interface circuit
16Connect capacitor C
5Constitute U
1Electric source filter circuit, resistance R
17Connect capacitor C
7Constitute U
2Electric source filter circuit.
6, by claim 1 or 2 described digitized brain electro-detection terminals, it is characterized in that described display screen is a LCDs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98232313 CN2361227Y (en) | 1998-12-31 | 1998-12-31 | Digital EEG detecting terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98232313 CN2361227Y (en) | 1998-12-31 | 1998-12-31 | Digital EEG detecting terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2361227Y true CN2361227Y (en) | 2000-02-02 |
Family
ID=33981338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98232313 Expired - Fee Related CN2361227Y (en) | 1998-12-31 | 1998-12-31 | Digital EEG detecting terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2361227Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103190903A (en) * | 2013-01-24 | 2013-07-10 | 上海帝仪科技有限公司 | EEG signal amplifier and method for amplifying EEG signal |
| CN103876735A (en) * | 2014-03-27 | 2014-06-25 | 王远志 | System and method for collecting high-performance brain electrical signals |
| CN107157478A (en) * | 2017-06-01 | 2017-09-15 | 电子科技大学 | A kind of multichannel Cortical ECoG acquisition system based on capacitive electrode |
-
1998
- 1998-12-31 CN CN 98232313 patent/CN2361227Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103190903A (en) * | 2013-01-24 | 2013-07-10 | 上海帝仪科技有限公司 | EEG signal amplifier and method for amplifying EEG signal |
| CN103876735A (en) * | 2014-03-27 | 2014-06-25 | 王远志 | System and method for collecting high-performance brain electrical signals |
| CN107157478A (en) * | 2017-06-01 | 2017-09-15 | 电子科技大学 | A kind of multichannel Cortical ECoG acquisition system based on capacitive electrode |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |