CN205031255U - Microvolt level T ripples is real -time detection system in turn - Google Patents
Microvolt level T ripples is real -time detection system in turn Download PDFInfo
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- CN205031255U CN205031255U CN201520794395.7U CN201520794395U CN205031255U CN 205031255 U CN205031255 U CN 205031255U CN 201520794395 U CN201520794395 U CN 201520794395U CN 205031255 U CN205031255 U CN 205031255U
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Abstract
The utility model discloses a microvolt level T ripples is real -time detection system in turn, belong to the biomedical signal processing technique field, the system includes real -time electrocardiogram signal collection's data acquisition terminal, the data input module, the DSP controller, processing module, the early warning module, storage module and display module, data pre processing is carried out with the electrocardio signal transmission who gathers in real time to the data input module to the data acquisition terminal connection data input module, the DSP controller is connected to the data input module, the DSP controller is connected processing module and is detected the alternative T ripples in the electrocardiosignal by processing module, the DSP controller is connected to the early warning module, storage module connects on the DSP controller, the DSP controller is connected to the display module. The utility model provides a because the different T ripples testing results in turn that influences of factors such as race, age, living environment, problem that the error is big has the alternative advantage of non - dominance T ripples of existence in can accurate real -time detection electrocardiosignal.
Description
Technical field
This utility model belongs to processing of biomedical signals technical field, relate to detection side that T ripple replaces to, be specifically related to a kind of microvolt T ripple and replace real-time detecting system.
Background technology
In recent years, a large amount of materials shows that ventricular arrhythmia is the one of the main reasons causing cardiac sudden death, and TWA is as the noninvasive ECG detecting means of one, has become the important indicator of prediction ventricular arrhythmia and sudden cardiac death.T ripple alternately (T-wavealternans, TWA) is when the regular rhythm of the heart, a kind of electrocardio variation phenomenon being embodied in T waveform state, polarity and amplitude on surface electrocardiogram alternate by shooting.Theory is applied in the clinical treatment of reality, generally have employed multiple MTWA detection method, to reduce error, mainly contain Spectral Analysis Method, correlational analysis method, Poincare scatterplot method etc., and the most ripe TWA detection method is Spectral Analysis Method now.Zymography detects T ripple alternately also Shortcomings, as calculation of complex, detects each heart and claps the shortcomings such as the difficulty of T ripple alternating amplitudes.At present, the research replaced about electrocardiosignal T ripple mainly carries out simulating, verifying using america's MIT/BIH standard arrhythmia data base and European ST-T ecg database as sample.But due to the difference of the factors such as race, age, living environment, the testing result that can replace T ripple produces certain influence, therefore simple existing experimental data emulation difficulty or ease are used for clinical diagnosis.
Summary of the invention
According to above the deficiencies in the prior art, technical problem to be solved in the utility model proposes a kind of microvolt T ripple to replace real-time detecting system, by real-time data acquisition and process, denoising is carried out to electrocardio, the electrocardio in data base is utilized to adjust in conjunction with Chinese electrocardio, the non-dominant T ripple of real-time detection alternately, solve due to race, age, the testing result that the Different Effects T ripple of the factors such as living environment replaces, the problem that error is large, there is the advantage that the non-dominant T ripple that can exist in precise real-time detection electrocardiosignal replaces, this system has collection, process, analyze, show and store electrocardiogram data information, timely early warning.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of microvolt T ripple replaces real-time detecting system, described microvolt T ripple replaces the data collection station that real-time detecting system comprises Real-time Collection electrocardiosignal, data input module, dsp controller, processing module, warning module, memory module and display module, the electrocardiosignal of Real-time Collection is also sent to data input module and carries out data prediction by data collection station connection data input module, data input module connects dsp controller and carries data signal to arrive dsp controller, dsp controller connection handling module is detected the alternately T ripple in electrocardiosignal by processing module, warning module connects dsp controller and is used for sending according to the instruction of dsp controller the early warning signal finding alternately T ripple, memory module is connected to dsp controller and is used for storing data information, display module connects dsp controller and is used for showing information according to the instruction of dsp controller.
In said system, described processing module comprises pretreatment unit, index choosing unit and quantitative analysis unit, the pretreatment that pretreatment unit is used for electrocardiosignal connects index choosing unit, index choosing unit is used for the morphological index selected connection quantitative analysis unit of scatterplot, and the morphological characteristic value that quantitative analysis unit is used for scatterplot connects dsp controller to the quantitative analysis that T ripple replaces.Described memory module comprises america's MIT-BIH standard arrhythmia data base, European ST-T ecg database carries out the sampling of T ripple and real-time detector data storehouse, utilizes the data of MIT-BIH standard arrhythmia data base and European ST-T ecg database to carry out quantitative analysis with the electrocardiogram (ECG) data detected in real time.Described display module is that LCD MODULE comprises integrated logic circuit, converting unit, driver element and liquid crystal display, converting unit connects the outfan of dsp controller, converting unit connects integrated logic circuit, and integrated logic circuit connects driver element and liquid crystal display.Described display module also comprises development board, is provided with data register and address decoder in integrated logic circuit, and development board connects data register and the address decoder of integrated logic circuit.The input terminal voltage of described converting unit is 3.3V, and the output end voltage of converting unit is 5V, and converting unit is connected to the outfan of dsp controller for level isolation and voltage transitions.Described dsp controller adopts chip TMS320VC5509A.
This utility model beneficial effect is: the microvolt T ripple that this utility model provides based on dsp controller replaces real-time detecting system and method thereof, its system adopting dsp controller to set up a non-dominant T ripple that can exist in precise real-time detection electrocardiosignal to replace, this system has collection, process, analyze, show and store electrocardiogram data information, timely pre-alerting ability, effectively can improve anomalous ecg detection alarm system, find cardiac problems more timely, get rid of heart disease hidden danger, lower the sickness rate of sudden death and other heart rate exceptions, to protect, the mankind's is healthy.
Accompanying drawing explanation
Below the content expressed by this Figure of description and the labelling in figure are briefly described:
Fig. 1 is the real-time detecting system operation principle block diagram of detailed description of the invention of the present utility model.
Fig. 2 is the theory diagram of the display module of detailed description of the invention of the present utility model.
Fig. 3 is the method flow diagram of the real-time detecting system of detailed description of the invention of the present utility model.
Detailed description of the invention
Contrast accompanying drawing below, by the description to embodiment, detailed description of the invention of the present utility model is as the effect of the mutual alignment between the shape of involved each component, structure, each several part and annexation, each several part and operation principle, manufacturing process and operation using method etc., be described in further detail, have more complete, accurate and deep understanding to help those skilled in the art to inventive concept of the present utility model, technical scheme.
A kind of microvolt T ripple replaces real-time detecting system, as shown in Figure 1, system comprises data collection station, data input module, dsp controller, processing module, warning module, memory module and display module, the outfan connection data input module of data collection station, the outfan of data input module connects the input of dsp controller, the outfan of dsp controller connects warning module and display module, processing module and memory module are bi-directionally connected dsp controller, the image data of dsp controller according to reception and the result output display information command of processing module, LCDs result being presented at display module is preserved in a storage module.The electrocardiosignal of Real-time Collection is also sent to data input module and carries out data prediction by data collection station connection data input module, data input module connects dsp controller and carries data signal to arrive dsp controller, dsp controller connection handling module is detected the alternately T ripple in electrocardiosignal by processing module, warning module connects dsp controller and is used for sending according to the instruction of dsp controller the early warning signal finding alternately T ripple, memory module is connected to dsp controller and is used for storing data information, display module connects dsp controller and is used for showing information according to the instruction of dsp controller.The system that dsp controller adopts chip TMS320VC5509A to set up a non-dominant T ripple that can exist in precise real-time detection electrocardiosignal to replace, for the collection to ecg signal data, analyze, process and storage, and control to send warning module and display module, setting up of modules makes system have collection, process, analyze, show and store electrocardiogram data information, warning function, thus realize perfect anomalous ecg detection alarm system, find cardiac problems more timely, get rid of heart disease hidden danger, lower the sickness rate of sudden death and other heart rate exceptions, the effective protection mankind's is healthy.
Processing module comprises pretreatment unit, index choosing unit and quantitative analysis unit, the pretreatment that pretreatment unit is used for electrocardiosignal connects index choosing unit, index choosing unit is used for the morphological index selected connection quantitative analysis unit of scatterplot, and the morphological characteristic value that quantitative analysis unit is used for scatterplot connects dsp controller to the quantitative analysis that T ripple replaces.Memory module comprises america's MIT-BIH standard arrhythmia data base, European ST-T ecg database carries out the sampling of T ripple and real-time detector data storehouse, utilizes the data of MIT-BIH standard arrhythmia data base and European ST-T ecg database to carry out quantitative analysis with the electrocardiogram (ECG) data detected in real time.
As shown in Figure 2, display module is LCD MODULE, comprise integrated logic circuit, development board, converting unit, driver element and liquid crystal display, converting unit connects the outfan of dsp controller, converting unit connects integrated logic circuit, integrated logic circuit connects driver element and liquid crystal display, is provided with data register and address decoder in integrated logic circuit, and development board connects data register and the address decoder of integrated logic circuit.Integrated logic circuit adopts CPLD, and driver element adopts 74LS245, because the DSP of display apparatus module relative motion under high primary frequency belongs to comparatively slow devices, needs the Holding Problem considering signal on data wire during connection.Because dsp controller is 3.3V equipment, and LCD MODULE belongs to 5V equipment, so need when connection control line, data wire to add level isolation and conversion equipment, be connected between display module and dsp controller carry out level isolation and conversion so be provided with converting unit, the input terminal voltage of converting unit is 3.3V, the output end voltage of converting unit is 5V, and converting unit is connected to the outfan of dsp controller for level isolation and voltage transitions.
Microvolt T ripple replaces a method for real-time detecting system, and as shown in Figure 3, method step comprises its workflow:
Step one, system acquisition electrocardiosignal electrocardiogram, data also preserve by Real-time Collection electrocardiosignal, timely padding data storehouse, solve the not accurate problem of testing result that various factors causes.Due to the difference of the factors such as race, age, living environment, the testing result that can replace T ripple produces certain influence, in addition range-restricted, the limited amount of emulated data, make simple existing experimental data emulation difficulty or ease for clinical diagnosis, therefore need the reasonability in conjunction with the setting of Chinese body constitution inspection T ripple alternating threshold, and appropriately adjust.
Step 2, noise suppression preprocessing is carried out to electrocardiosignal, in order to obtain interference less, the little electrocardiosignal of distortion is so that the index point of determination and analysis electrocardiosignal, this utility model adopts simple integral coefficient method to remove 50HZ Hz noise, utilize Digital Filtering with Zero Phase Error to remove the baseline drift of electrocardiosignal, adopt bior2.2 wavelet function to carry out Wavelet Transform Threshold Denoising Algorithm and remove myoelectricity interference.
Step 3, alternately T ripple location finding.
Step 4, judge whether T ripple alternately exists.
Alternately, display of search results also stores Monitoring Data for step 5, if there is no T ripple; If there is T ripple alternately, determine to exist the morphological index threshold value that T ripple replaces.The concrete defining method of morphological index threshold value: the morphological index selecting scatterplot, by Matlab technology, the sampling of T ripple is carried out to america's MIT/BIH standard arrhythmia data base and European ST-T ecg database, draw the first difference scatterplot of sampled point, by the morphological characteristic value of scatterplot, T ripple is hocketed quantitative analysis, draw the morphological characteristic threshold value judging that whether T ripple alternately exists.
Step 6, utilize morphological index and Zymography testing result and relative analysis.Comparative result analytical method: the T ripple alternating amplitudes of the morphological index of scatterplot method and Zymography is compared the testing result that T ripple replaces, judge the accuracy that morphological index detection T ripple replaces, after drawing morphological index threshold value, gather Chinese electrocardiogram (ECG) data sample, threshold value is assessed, and relevant parameter is adjusted.Due to the difference of the factors such as race, age, living environment, the testing result that can replace T ripple produces certain influence, in addition range-restricted, the limited amount of emulated data, make simple existing experimental data emulation difficulty or ease for clinical diagnosis, therefore need the reasonability in conjunction with the setting of Chinese body constitution inspection T ripple alternating threshold, and appropriately adjust.
Alternately there is result and store detection data in step 7, display T ripple, real-time detection electrocardiogram (ECG) data and analysis result thereof are all kept in the memory module of system, no matter whether draw the testing result that T ripple replaces, detect data all will store in a storage module, enrich data base, facilitate dsp controller to call, analytical data.
Step 8, send T ripple and replace early warning, there is T ripple if detect alternately, dsp controller sends control command, is shown by detection data result, sends early warning, and making a choice property data information memory; If do not exist, central controller sends control command, is shown by detection data result, does not send early warning, and making a choice property data information memory.
By reference to the accompanying drawings this utility model is exemplarily described above; obvious this utility model specific implementation is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present utility model is conceived and technical scheme is carried out; or design of the present utility model and technical scheme directly applied to other occasion, all within protection domain of the present utility model without to improve.The protection domain that protection domain of the present utility model should limit with claims is as the criterion.
Claims (7)
1. a microvolt T ripple replaces real-time detecting system, it is characterized in that, described microvolt T ripple replaces the data collection station that real-time detecting system comprises Real-time Collection electrocardiosignal, data input module, dsp controller, processing module, warning module, memory module and display module, the electrocardiosignal of Real-time Collection is also sent to data input module and carries out data prediction by data collection station connection data input module, data input module connects dsp controller and carries data signal to arrive dsp controller, dsp controller connection handling module is detected the alternately T ripple in electrocardiosignal by processing module, warning module connects dsp controller and is used for sending according to the instruction of dsp controller the early warning signal finding alternately T ripple, memory module is connected to and dsp controller is used for storing data information, display module connects dsp controller and is used for showing information according to the instruction of dsp controller.
2. microvolt T ripple according to claim 1 replaces real-time detecting system, it is characterized in that, described processing module comprises pretreatment unit, index choosing unit and quantitative analysis unit, the pretreatment that pretreatment unit is used for electrocardiosignal connects index choosing unit, index choosing unit is used for the morphological index selected connection quantitative analysis unit of scatterplot, and the morphological characteristic value that quantitative analysis unit is used for scatterplot connects dsp controller to the quantitative analysis that T ripple replaces.
3. microvolt T ripple according to claim 1 replaces real-time detecting system, it is characterized in that, described memory module comprises america's MIT-BIH standard arrhythmia data base, European ST-T ecg database carries out the sampling of T ripple and real-time detector data storehouse, utilizes the data of MIT-BIH standard arrhythmia data base and European ST-T ecg database to carry out quantitative analysis with the electrocardiogram (ECG) data detected in real time.
4. microvolt T ripple according to claim 1 replaces real-time detecting system, it is characterized in that, described display module is that LCD MODULE comprises integrated logic circuit, converting unit, driver element and liquid crystal display, converting unit connects the outfan of dsp controller, converting unit connects integrated logic circuit, and integrated logic circuit connects driver element and liquid crystal display.
5. microvolt T ripple according to claim 4 replaces real-time detecting system, it is characterized in that, described display module also comprises development board, is provided with data register and address decoder in integrated logic circuit, and development board connects data register and the address decoder of integrated logic circuit.
6. microvolt T ripple according to claim 4 replaces real-time detecting system, it is characterized in that, the input terminal voltage of described converting unit is 3.3V, and the output end voltage of converting unit is 5V, and converting unit is connected to the outfan of dsp controller for level isolation and voltage transitions.
7. microvolt T ripple according to claim 1 replaces real-time detecting system, it is characterized in that, described dsp controller adopts chip TMS320VC5509A.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105105746A (en) * | 2015-10-12 | 2015-12-02 | 安徽工程大学机电学院 | Microvolt TWA (T-wave alternans) real-time detection system and method thereof |
| CN112315485A (en) * | 2019-07-18 | 2021-02-05 | 查宇亮 | Qualitative ability quantitative evaluation method based on asymmetric cardiac cycle change |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105105746A (en) * | 2015-10-12 | 2015-12-02 | 安徽工程大学机电学院 | Microvolt TWA (T-wave alternans) real-time detection system and method thereof |
| CN112315485A (en) * | 2019-07-18 | 2021-02-05 | 查宇亮 | Qualitative ability quantitative evaluation method based on asymmetric cardiac cycle change |
| CN112315485B (en) * | 2019-07-18 | 2023-06-23 | 查宇亮 | Quality capability quantitative evaluation method based on asymmetric cardiac cycle change |
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