CN204723058U - A kind of simple and easy brain wave collector - Google Patents
A kind of simple and easy brain wave collector Download PDFInfo
- Publication number
- CN204723058U CN204723058U CN201520276885.8U CN201520276885U CN204723058U CN 204723058 U CN204723058 U CN 204723058U CN 201520276885 U CN201520276885 U CN 201520276885U CN 204723058 U CN204723058 U CN 204723058U
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- converter
- voltage amplifier
- chip microcomputer
- chip
- brain wave
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- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Abstract
This utility model belongs to medical electronic field, in particular to the simple and easy brain wave collector of one, comprise pre-amplification circuit, voltage amplifier, button cell, A/D converter, single-chip microcomputer, bluetooth communication module, lithium battery, forehead electrode and ear-lobe electrode; Described pre-amplification circuit and voltage amplifier and forehead Electrode connection; Described button cell provides power supply for pre-amplification circuit and voltage amplifier; Described voltage amplifier is connected with A/D converter and ear-lobe electrode; Described A/D converter is connected with single-chip microcomputer; Described single-chip microcomputer is connected with bluetooth module; Described lithium battery is A/D converter, single-chip microcomputer and bluetooth communication module provide power supply.Compared with prior art, the utility model has the advantage of: circuit structure is simple, working stability is with low cost, is convenient to realize.
Description
Technical field
This utility model belongs to medical electronic field, particularly the simple and easy brain wave collector of one.
Background technology
Toy at present based on brain wave technological development gets more and more, and due to brain wave detection technique more complicated, therefore much equipment have employed expensive import dedicated processes chip and circuit, for domestic commercially producing in enormous quantities brings many obstructions.
Summary of the invention
In order to solve the problem, this utility model provides a kind of simple and easy brain wave collector, is specifically realized by following technical scheme:
A kind of simple and easy brain wave collector, comprises pre-amplification circuit, voltage amplifier, button cell, A/D converter, single-chip microcomputer, bluetooth communication module, lithium battery, forehead electrode and ear-lobe electrode; Described pre-amplification circuit and voltage amplifier and forehead Electrode connection; Described button cell provides power supply for pre-amplification circuit and voltage amplifier; Described voltage amplifier is connected with A/D converter and ear-lobe electrode; Described A/D converter is connected with single-chip microcomputer; Described single-chip microcomputer is connected with bluetooth module; Described lithium battery is A/D converter, single-chip microcomputer and bluetooth communication module provide power supply.
Described simple and easy brain wave collector, it designs further and is, described pre-amplification circuit adopts AD8608 chip, and described forehead electrode is connected with the pin 3 of this chip.
Described simple and easy brain wave collector, it designs further and is, described voltage amplifier have employed two AD8609 chips be connected to each other.
Described simple and easy brain wave collector, it designs further and is, described voltage amplifier, pre-amplification circuit are connected to a PEF2925 chip to provide reference voltage signal.
Described simple and easy brain wave collector, it designs further and is, the chip that described A/D converter adopts is ADS7813.
Described simple and easy brain wave collector, it designs further and is, described single-chip microcomputer adopts ATmega128 chip.
Compared with prior art, the utility model has the advantage of: circuit structure is simple, working stability is with low cost, is convenient to realize.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is circuit theory diagrams of the present utility model.
Detailed description of the invention
Below in conjunction with drawings and Examples, this utility model is further illustrated.This utility model is only the description to this utility model embodiment, does not have any restriction to scope of the present utility model.
Embodiment 1
As shown in Figure 1, this simple and easy brain wave collector, comprises pre-amplification circuit, voltage amplifier, button cell, A/D converter, single-chip microcomputer, bluetooth communication module, lithium battery, forehead electrode and ear-lobe electrode.Described pre-amplification circuit and voltage amplifier and forehead Electrode connection; Described button cell provides power supply for pre-amplification circuit and voltage amplifier; Described voltage amplifier is connected with A/D converter and ear-lobe electrode connects; Described A/D converter is connected with single-chip microcomputer; Described single-chip microcomputer is connected with bluetooth module; Described lithium battery is A/D converter, single-chip microcomputer and bluetooth communication module provide power supply.
As shown in Figure 2, be circuit theory diagrams of the present utility model.Comprise chip U1, chip U2, chip U3, chip U4, chip U5, chip U6, chip U7, bluetooth module U8 and other auxiliary electronic element.Wherein U1 is single-chip microcomputer, concrete chip model is ATmega128, be connected with the crystal oscillator that size is 7.3728MHz, U2 is 16 modulus conversion chip ADS7813, as described A/D converter, U3, U4, U5 are the high input impedance operational amplifier AD8609 of applicable brain wave or ECG signal process, U6 is 1.25V voltage-reference, and U7 is 2.5V voltage-reference.The pin 11 ~ 17 of U1 is connected with U2, and control ADS7813 carries out data acquisition; The pin 4 of U2 is input end of analog signal mouth; The pin 3 of U4 is connected with the electrode sensor being attached to human brain forehead center, gathers brain wave low frequency signal; Pin 7 and the Electrode connection be clipped on human brain ear-lobe of U5, can suppress amplifying circuit common-mode noise; U4 and U6 forms preamplifier; U3, U5, U7 form voltage amplifier, the low frequency signal of brain wave can be amplified more than 10,000 times; U6, U7 are respectively preamplifier and voltage amplifier provides reference voltage signal; Bluetooth module U8 is connected with the pin 28 and 29 of single-chip microcomputer U1, the brain wave data gathered is sent to host computer by wireless, the low-frequency interference signal of 50Hz can be got rid of like this, save and very complicated mix power frequency component in brain wave and alternating current harmonic signal; Whole system lithium battery power supply.
The above; only with this utility model preferably detailed description of the invention; but protection domain of the present utility model is also confined to this; anyly be familiar with those skilled in the art in the technical scope that this utility model discloses; the change expected easily or replacement can be thought, all should be encompassed in protection domain of the present utility model and so on.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (6)
1. a simple and easy brain wave collector, comprises pre-amplification circuit, voltage amplifier, button cell, A/D converter, single-chip microcomputer, bluetooth communication module, lithium battery, forehead electrode and ear-lobe electrode; Described pre-amplification circuit and voltage amplifier and forehead Electrode connection; Described button cell provides power supply for pre-amplification circuit and voltage amplifier; Described voltage amplifier is connected with A/D converter and ear-lobe electrode; Described A/D converter is connected with single-chip microcomputer; Described single-chip microcomputer is connected with bluetooth module; Described lithium battery is A/D converter, single-chip microcomputer and bluetooth communication module provide power supply.
2. simple and easy brain wave collector according to claim 1, is characterized in that, described pre-amplification circuit adopts AD8608 chip, and described forehead electrode is connected with the pin 3 of this chip.
3. simple and easy brain wave collector according to claim 2, is characterized in that, described voltage amplifier have employed two AD8609 chips be connected to each other.
4. device according to claim 3, is characterized in that: described voltage amplifier, pre-amplification circuit are connected to a PEF2925 chip to provide reference voltage signal.
5. device according to claim 1, is characterized in that: the chip that described A/D converter adopts is ADS7813.
6. simple and easy brain wave collector according to claim 1, is characterized in that, described single-chip microcomputer adopts ATmega128 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520276885.8U CN204723058U (en) | 2015-04-30 | 2015-04-30 | A kind of simple and easy brain wave collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520276885.8U CN204723058U (en) | 2015-04-30 | 2015-04-30 | A kind of simple and easy brain wave collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204723058U true CN204723058U (en) | 2015-10-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520276885.8U Expired - Fee Related CN204723058U (en) | 2015-04-30 | 2015-04-30 | A kind of simple and easy brain wave collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204723058U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106361326A (en) * | 2016-08-30 | 2017-02-01 | 张胜国 | Brain wave collecting and transmitting terminal |
-
2015
- 2015-04-30 CN CN201520276885.8U patent/CN204723058U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106361326A (en) * | 2016-08-30 | 2017-02-01 | 张胜国 | Brain wave collecting and transmitting terminal |
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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: 20151028 Termination date: 20160430 |