CN204581273U - A kind of hand held ECG Signal Sampling System for identity validation - Google Patents
A kind of hand held ECG Signal Sampling System for identity validation Download PDFInfo
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- CN204581273U CN204581273U CN201520262798.7U CN201520262798U CN204581273U CN 204581273 U CN204581273 U CN 204581273U CN 201520262798 U CN201520262798 U CN 201520262798U CN 204581273 U CN204581273 U CN 204581273U
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- ecg
- electrocardiosignal
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Abstract
This utility model relates to a kind of hand held ECG Signal Sampling System for identity validation, comprise: for gathering the electrocardiogram signal acquisition device of electrocardiosignal and the host computer for carrying out ECG's data compression from people's hand, described host computer is circumscribed with image capture device; Its technical characterstic is: described electrocardiogram signal acquisition device is made up of Electrocardial signal acquisition device and ECG's data compression device, described Electrocardial signal acquisition device is formed for the lucite tube and three textile electrodes be pasted onto on lucite tube outer wall supplying hands grasping by one, and described three textile electrodes are connected with the textile electrode interface on described ECG's data compression device respectively.The electrocardiosignal mode that this utility model gathers from hand, change and traditional press from both sides the ecg signal acquiring mode of electrode pasting ankle in electrode or wrist from chest, convenient, convenient, and adopt textile electrode to improve accuracy, the stability of ecg signal acquiring.
Description
Technical field
This utility model belongs to bio information recognition technology field, especially a kind of hand held ECG Signal Sampling System for identity validation.
Background technology
The feature that biometrics identification technology can not pass into silence by feat of it or forget, is subject to increasing researcher and pays close attention to.Be widely used in the field such as business activity, information security as iris technology, DNA technique, face recognition technology etc.
Since ECG is found, be just used in heart disease diagnosis and cardiac monitoring always, until research worker ECG has distinguished two individualities, carried out identity recognizing technology about ECG and just carry out gradually.ECG as a kind of live body signal because its easily gather, be not easy to be replicated steal, amount of calculation is little, squeezable advantage takes advantage gradually in bio information field.Identity confirming technology is one of them research direction of biometric technology, is also taken seriously gradually based on ECG identity confirming technology.The data of testing according to statistics mostly from MIT the standard database such as BIT, PTB, and achieve very high accuracy.Steven linear discriminent has carried out identification, achieves the result of 100%.Chen Tianding genetic algorithm and Particle Swarm Optimization Model parameter, reach the accuracy of 96% by neural network recognization by parameter.Some scholars have also used based on neutral net, have improved the sorting techniques such as neutral net, Euclidean distance, support vector and achieve very high accuracy rate.MIT the standard database such as BIT adopt the acquisition mode image data of 12 lead, not only gather inconvenience, and test by these data, experimental result is applied to reality may not be reliable.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, there is provided a kind of reasonable in design, gather electrocardiosignal noise little, accuracy rate is high, ecg signal acquiring speed is fast, the hand held ECG Signal Sampling System for identity validation that hardware cost is low and easy to use.
This utility model solves existing technical problem and takes following technical scheme to realize:
A kind of hand held ECG Signal Sampling System for identity validation, comprise: for gathering the electrocardiogram signal acquisition device of electrocardiosignal and the host computer for carrying out ECG's data compression from people's hand, described host computer is circumscribed with image capture device, described electrocardiogram signal acquisition device is made up of Electrocardial signal acquisition device and ECG's data compression device, described Electrocardial signal acquisition device is formed for the lucite tube and three textile electrodes be pasted onto on lucite tube outer wall supplying hands grasping by one, described three textile electrodes are connected with the textile electrode interface on described ECG's data compression device respectively.
And described electrocardiogram signal acquisition device adopts Bluetooth transmission mode to communicate with host computer.
And described ECG's data compression device is made up of casing and internal control circuit thereof; Described internal control circuit comprises: electrocardiosignal denoising module, AD conversion module, the MCU embedded platform of built-in power module, Bluetooth communication modules; Described electrocardiosignal denoising module is connected with the textile electrode interface be arranged in casing, the outfan of this electrocardiosignal denoising module is connected with the input of AD conversion module, the outfan of described AD conversion module is connected with the input of the MCU embedded platform of built-in power module, and the outfan of the MCU embedded platform of described built-in power module is connected with Bluetooth communication modules.
And described internal control circuit also comprises: memory module, LCD display module and key-press module, described memory module, LCD display module and key-press module are connected with the MCU embedded platform of built-in power module respectively; Described LCD display module is connected with the LCD display that casing is arranged, and described key-press module is connected with the control button that casing is arranged.
And described electrocardiosignal denoising module comprises: the pre-amplification circuit connected successively, low-pass filtering and rejector circuit; Described pre-amplification circuit is connected with textile electrode interface, and the outfan of rejector circuit is connected with AD conversion module.
And described AD conversion module comprises the amplifier and a/d converter that connect successively, and the input of described amplifier is connected with the outfan of rejector circuit, described AD conversion outfan is connected with the input of the MCU embedded platform of built-in power module.
And described rejector circuit is 50HZ rejector circuit.
Advantage of the present utility model and good effect are:
1, Electrocardial signal acquisition device of the present utility model is formed for the lucite tube and three textile electrodes be pasted onto on lucite tube outer wall supplying hands grasping by one, wherein two electrodes are for measuring electrocardiosignal from hand, 3rd electrode is for generation of higher common mode rejection ratio, make the electrocardiosignal noise that collects little, this electrocardiosignal mode gathered from hand, change and traditional press from both sides the ecg signal acquiring mode of electrode pasting ankle in electrode or wrist from chest, convenient, convenient, and the signal quality gathered is also highly stable.
2, this utility model adopts comfortable textile electrode, this fabric adopts silver-plated polyester material as conductive media, the stimulation of silver-plated polyester material to skin is less, and the impedance of self is low, there is good conducting power, this textile electrode is more comfortable than disposable electrode, in using for a long time, also can not affect signal quality.This textile electrode is adopted to be conducive to improving accuracy, the stability of ecg signal acquiring; The electrocardiosignal gathered meets medical significance, for identity validation experiment have accumulated mass data.
3, this utility model only needs measured's both hands to hold with a firm grip to be stained with the lucite tube for gathering electrocardiosignal from hand of textile electrode, and measured's electrocardiosignal just can upload to host computer from ecg signal acquiring equipment by bluetooth.By host computer, the electrocardiosignal uploaded is processed, generate the template for identity validation and be stored in the template base of host computer; When needing identity validation, then by host computer, the electrocardiosignal that measured uploads is processed and identity validation.The collection of whole electrocardiosignal and identity validation process only completed with tens seconds, for ECG identity confirming technology provides a kind of mode of simple and fast in actual applications.
Accompanying drawing explanation
Fig. 1 is system connection diagram of the present utility model;
Fig. 2 is the structural representation of electrocardiogram signal acquisition device;
Fig. 3 is the internal control circuit block diagram of ECG's data compression device;
The STM32 chip pin figure that Fig. 4 adopts for MCU embedded platform;
The ADS1298 chip pin figure that Fig. 5 adopts for AD conversion module;
Fig. 6 is the circuit diagram that low pass filtered involves amplification circuits;
Fig. 7 is the circuit diagram of 50HZ rejector circuit part;
Fig. 8 is the circuit diagram of LCD display module part;
Fig. 9 is the circuit diagram of bluetooth module;
Figure 10 is the circuit diagram of memory module;
Figure 11 is the process chart of masterplate generating portion in this utility model.
Figure 12 is the process chart of identity validation part in this utility model.
Figure 13 is the comparison diagram a of the single waveform of this utility model hand held and the waveform led one by one of 12 lead
Figure 14 is the comparison diagram b of the single waveform of this utility model hand held and the waveform led one by one of 12 lead
Figure 15 is the comparison diagram c of the single waveform of this utility model hand held and the waveform led one by one of 12 lead
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model embodiment is further described.
A kind of hand held ECG Signal Sampling System for identity validation, as shown in Figure 1, comprise: for gathering the electrocardiogram signal acquisition device of electrocardiosignal and the host computer for carrying out electrocardiosignal confirmation from people's hand, described electrocardiogram signal acquisition device adopts the mode of Bluetooth transmission to communicate with host computer.Described host computer is also circumscribed with image capture device, and in the present embodiment, this image capture device is a photographic head be connected with host computer, for gathering the head portrait of measured.
As shown in Figure 2, described electrocardiogram signal acquisition device is made up of Electrocardial signal acquisition device and ECG's data compression device.This Electrocardial signal acquisition device is a lucite tube for confession hands grasping, described lucite tube outer wall is bonded with three textile electrodes, described three textile electrodes are connected with the textile electrode interface on described ECG's data compression device respectively by three connecting lines.Wherein two textile electrodes are input electrode, and right-and-left current potential is measured in its effect, and the electrocardiosignal of required collection be these two textile electrodes survey the potential difference of current potential; Because electrocardiosignal is very faint, in order to produce higher common mode rejection ratio, reduce common mode disturbance voltage, lucite tube outer wall has been set up the 3rd textile electrode (right leg drive electrode), and this textile electrode is output electrode.
The effect of this Electrocardial signal acquisition device is electrocardiosignal from hand collection measured and transfers to ECG's data compression device to process.
Described ECG's data compression device is made up of casing and internal control circuit thereof, and described ECG's data compression device shell is provided with LCD display and controls button, and in the present embodiment, this control button comprises cancels button and power switch button.
As shown in Figure 3, described ECG's data compression device internal control circuit comprises: the MCU embedded platform of electrocardiosignal denoising module, AD conversion module, built-in power module, Bluetooth communication modules, memory module, LCD display module and key-press module; Described electrocardiosignal denoising module is connected with textile electrode interface, the outfan of this electrocardiosignal denoising module is connected with the input of AD conversion module, the outfan of described AD conversion module is connected with the input of the MCU embedded platform of built-in power module, and the outfan of the MCU embedded platform of described built-in power module is connected for the electrocardiosignal of collection is transferred to host computer with Bluetooth communication modules; The MCU embedded platform of described built-in power module is also connected to memory module, LCD display module and key-press module and realizes corresponding storage, display and keypress function.
Described electrocardiosignal denoising module comprises: the pre-amplification circuit connected successively, low-pass filtering and rejector circuit; Described pre-amplification circuit is connected with textile electrode interface, and the outfan of rejector circuit is connected with AD conversion module.
Described AD conversion module comprises the amplifier and a/d converter that connect successively, and the input of described amplifier is connected with the outfan of rejector circuit, and described AD conversion outfan is connected with the input of the MCU embedded platform of built-in power module.
Described rejector circuit is preferably 50HZ rejector circuit.
The ADS1298 chip pin figure that Fig. 4 to Figure 10 sets forth STM32 chip pin figure that MCU embedded platform adopts, AD conversion module adopts, low pass filtered involve the circuit diagram of amplification circuits, 50HZ rejector circuit part, LCD display module part, bluetooth module and memory module.
Operation principle of the present utility model is:
1, measured's template is generated
As shown in figure 11, first, measured gathers electrocardiosignal by the Electrocardial signal acquisition device of hand-held electrocardiogram signal acquisition device.Then, the electrocardiosignal of collection is transferred to ECG's data compression device by electrical signal collection device, by ECG's data compression device, the electrocardiosignal of collection is carried out signal denoising and signal processing and amplifying by electrocardiosignal denoising module and AD conversion module.For making the ecg signal data gathering measured more accurately, in the present embodiment, twice measured's electrocardiosignal need be gathered altogether.Secondly, the electrocardiosignal after process is uploaded to host computer by bluetooth module, and again processed electrocardiosignal by host computer, its contents processing comprises: R ripple detects, and is divided into single ripple, waveform extracting, and screening waveform, generates measured's masterplate; And by image collecting device shooting measured head portrait.Finally, measured's template and measured's head portrait are stored in the template base of host computer.
2, measured's identity is confirmed
When needs confirm measured's identity, as shown in figure 12, first, measured gathers electrocardiosignal by the Electrocardial signal acquisition device of hand-held electrocardiogram signal acquisition device.Then, the electrocardiosignal of collection is transferred to ECG's data compression device by electrical signal collection device, by ECG's data compression device, the electrocardiosignal of collection is carried out signal denoising and signal processing and amplifying by electrocardiosignal denoising module and AD conversion module.Finally, electrocardiosignal after process is uploaded to host computer by bluetooth module, again electrocardiosignal is processed by host computer, its contents processing comprises: R ripple detects, according to R point, signal segmentation is become single ripple complete one by one, and in divided good single ripple, random choose single ripple is produced into the template for identity validation.All masterplates in this template and template library are compared and calculate correlation coefficient; Finally, output judged result (measured's head portrait and Association Identity confirmation, as: measured's name, age etc.), reach the object of identity validation.
The collection of whole electrocardiosignal and identity validation process only completed with tens seconds.
In order to verify the electrocardiosignal mode Stability and veracity that hand held ecg signal acquiring equipment gathers, the holocentric of the electrocardiosignal of this utility model collection and traditional 12 lead is moved period ratio comparatively, as shown in Figure 13, Figure 14, Figure 15, everyone 12 lead data present with single heart cycle waveform, and the electrocardiogram (ECG) data of hand held ecg signal acquiring equipment presents with continuous wave and single waveform.As can be seen from the figure, the continuous wave of hand held is more stable, by the single waveform of hand held compared with the waveform led one by one of 12 lead, single cardiac waveform and the I of the known hand held collection single waveform morphology that leads is similar, illustrate electrocardiosignal that this hand held ECG Signal Sampling System gathers accurately, stablize and there is medical significance.
It is emphasized that; embodiment described in the utility model is illustrative; instead of it is determinate; therefore this utility model is not limited to the embodiment described in detailed description of the invention; every other embodiments drawn by those skilled in the art's technical scheme according to the present invention, belong to the scope of this utility model protection equally.
Claims (7)
1. the hand held ECG Signal Sampling System for identity validation, comprise: for gathering the electrocardiogram signal acquisition device of electrocardiosignal and the host computer for carrying out ECG's data compression from people's hand, described host computer is circumscribed with image capture device, it is characterized in that: described electrocardiogram signal acquisition device is made up of Electrocardial signal acquisition device and ECG's data compression device, described Electrocardial signal acquisition device is formed for the lucite tube and three textile electrodes be pasted onto on lucite tube outer wall supplying hands grasping by one, described three textile electrodes are connected with the textile electrode interface on described ECG's data compression device respectively.
2. a kind of hand held ECG Signal Sampling System for identity validation according to claim 1, is characterized in that: described electrocardiogram signal acquisition device adopts Bluetooth transmission mode to communicate with host computer.
3. a kind of hand held ECG Signal Sampling System for identity validation according to claim 1, is characterized in that: described ECG's data compression device is made up of casing and internal control circuit thereof; Described internal control circuit comprises: electrocardiosignal denoising module, AD conversion module, the MCU embedded platform of built-in power module, Bluetooth communication modules; Described electrocardiosignal denoising module is connected with the textile electrode interface be arranged in casing, the outfan of this electrocardiosignal denoising module is connected with the input of AD conversion module, the outfan of described AD conversion module is connected with the input of the MCU embedded platform of built-in power module, and the outfan of the MCU embedded platform of described built-in power module is connected with Bluetooth communication modules.
4. a kind of hand held ECG Signal Sampling System for identity validation according to claim 3, it is characterized in that: described internal control circuit also comprises: memory module, LCD display module and key-press module, described memory module, LCD display module and key-press module are connected with the MCU embedded platform of built-in power module respectively; Described LCD display module is connected with the LCD display that casing is arranged, and described key-press module is connected with the control button that casing is arranged.
5. a kind of hand held ECG Signal Sampling System for identity validation according to claim 3, is characterized in that: described electrocardiosignal denoising module comprises: the pre-amplification circuit connected successively, low-pass filtering and rejector circuit; Described pre-amplification circuit is connected with textile electrode interface, and the outfan of rejector circuit is connected with AD conversion module.
6. a kind of hand held ECG Signal Sampling System for identity validation according to claim 3, it is characterized in that: described AD conversion module comprises the amplifier and a/d converter that connect successively, the input of described amplifier is connected with the outfan of rejector circuit, and described AD conversion outfan is connected with the input of the MCU embedded platform of built-in power module.
7. a kind of hand held ECG Signal Sampling System for identity validation according to claim 5, is characterized in that: described rejector circuit is 50HZ rejector circuit.
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| CN201520262798.7U CN204581273U (en) | 2015-04-28 | 2015-04-28 | A kind of hand held ECG Signal Sampling System for identity validation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105662399A (en) * | 2016-02-18 | 2016-06-15 | 曲晓燕 | Handheld type electrocardiograph detection and analysis device |
| WO2017181746A1 (en) * | 2016-04-21 | 2017-10-26 | 深圳市前海康启源科技有限公司 | Handheld noninvasive blood sugar testing device |
| CN109291696A (en) * | 2018-09-29 | 2019-02-01 | 上海掌门科技有限公司 | A kind of method and apparatus acquiring electrocardiosignal by writing device |
-
2015
- 2015-04-28 CN CN201520262798.7U patent/CN204581273U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105662399A (en) * | 2016-02-18 | 2016-06-15 | 曲晓燕 | Handheld type electrocardiograph detection and analysis device |
| WO2017181746A1 (en) * | 2016-04-21 | 2017-10-26 | 深圳市前海康启源科技有限公司 | Handheld noninvasive blood sugar testing device |
| CN109291696A (en) * | 2018-09-29 | 2019-02-01 | 上海掌门科技有限公司 | A kind of method and apparatus acquiring electrocardiosignal by writing device |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20200428 |
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| CF01 | Termination of patent right due to non-payment of annual fee |