CN207397295U - A kind of breathing and BCG signal extraction systems based on light shock sensor - Google Patents
A kind of breathing and BCG signal extraction systems based on light shock sensor Download PDFInfo
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- CN207397295U CN207397295U CN201721555801.XU CN201721555801U CN207397295U CN 207397295 U CN207397295 U CN 207397295U CN 201721555801 U CN201721555801 U CN 201721555801U CN 207397295 U CN207397295 U CN 207397295U
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Abstract
The utility model belongs to sensor signal processing and signal extraction technical field, a kind of breathing based on light shock sensor and BCG signal extraction systems is disclosed, for carrying out the sampling apparatus of signal acquisition；It is electrically connected with sampling apparatus, is used to implement the wave filter of filtering；It is electrically connected with wave filter, is used to implement the draw-out device of signal extraction；It is used to implement and dry removes dry device；With dry device is gone to be connected, the signal stabilization device of enhancing signal stationarity is used to implement；With dry device is gone to be connected, for extracting the low pass device of respiratory waveform and BCG waveforms and high exchange device；It is connected with signal stabilization device, is used to implement the spectrum analyzer of line spectrum analysis.Algorithm simplifies circuit structure, realizes high performance pre-filtering by filtering and extracting, guarantee meets time domain sampling theorem.First passing through small echo goes the method for dry FFT again to enhance the stationarity of signal, to determine breathing and BCG by the two big value spectral line of amplitude-frequency after FFT.
Description
Technical field
The utility model belongs to sensor signal processing and signal extraction technical field more particularly to a kind of light that is based on shakes
The dynamic breathing of sensor and BCG signal extraction systems.
Background technology
Respiratory rate and BCG are important human body physiological parameters.Concept based on microbend fiber and energy loss, design and
Manufacture it is theoretical it is verified that.Be shown the sensor mat of embedded multimode fibre in attached drawing 2, an optoelectronics transceivers and
The embeded processor of one DSP algorithm, maximum micro-bend sensibility are realized by appropriate optical configuration.TOSA and ROSA points
Not Wei optical signal transmitting and receiver, in the selection of TOSA we selected can 850nm wavelength channels TOSA, with
This matches corresponding optical fiber and hardware circuit.
At the movement of mechanical disturbance quasi-periodic (breathing chest and body kinematics), anamorphoser plate (grenadine) squeezes optical fiber and lures
It leads a series of along fiber axis.Microbend causes optical coupling to enter radiation mode from kernel boot pattern, causes irreversible light loss
Consumption, and reduce the luminous intensity of radio transceiver.
In conclusion problem existing in the prior art is：Microbend causes optical coupling to enter radiation from kernel boot pattern
Pattern causes irreversible light loss, and reduces the luminous intensity of radio transceiver.
Utility model content
In view of the problems of the existing technology, the utility model provide a kind of breathing based on light shock sensor and
BCG signal extraction systems.
The utility model is realized in this way breathing that should be based on light shock sensor and BCG signal extraction system bags
It includes：
For carrying out the sampling apparatus of signal acquisition；
It is electrically connected with sampling apparatus, is used to implement the wave filter of filtering；
It is electrically connected with wave filter, is used to implement the draw-out device of signal extraction；
It is electrically connected with draw-out device, is used to implement and dry removes dry device；
With dry device is gone to be connected, the signal stabilization device of enhancing signal stationarity is used to implement；
With dry device is gone to be connected, for extracting the low pass device of respiratory waveform and BCG waveforms and high exchange device；
It is connected with signal stabilization device, is used to implement the spectrum analyzer of line spectrum analysis.
Further, the sampling apparatus uses high-speed sampler, and the wave filter uses low-pass filter.
The advantages of the utility model and good effect are：
1. the utility model constructs complete breathing and BCG infomation detection schemes, using STM32L476RGT6 processing
Device realizes dsp system, suits at low cost, clear in structure, reliability and cost-effective, and scalability, portable good etc.
The characteristics of modern product.
2. the utility model algorithm simplifies circuit structure, realize high performance pre-filtering by filtering and extracting, ensure
Meet time domain sampling theorem.First passing through small echo goes the method for dry FFT again to enhance the stationarity of signal, to pass through amplitude-frequency after FFT
Two big value spectral line determine breathing and BCG.
3. small echo go it is dry after, extract respiratory waveform and BCG waveforms respectively by IIR digital lowpasses and high-pass filter.
4.FFT algorithms using directly calculate and table look-up be combined by the way of promote calculating speed.
5.FIR filtering sampling linear phase structures, filtering data use circle queue, Lifting Convey speed.
Description of the drawings
Fig. 1 is the breathing based on light shock sensor and BCG signal extraction systems that the utility model embodiment provides
Fig. 2 is the sensor-based system block diagram that the utility model embodiment provides.
In figure：1st, sampling apparatus；2nd, wave filter；3rd, draw-out device；4th, dry device is removed；5th, signal stabilization device；6th, low pass
Device；7th, high exchange device；8th, spectrum analyzer.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, with reference to embodiments, to this
Utility model is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain this practicality
It is new, it is not used to limit the utility model.
Below in conjunction with the accompanying drawings 1 and specific embodiment the application principle of the utility model is further described.
The breathing and BCG signal extraction systems based on light shock sensor include：
For carrying out the sampling apparatus 1 of signal acquisition；
It is electrically connected with sampling apparatus 1, is used to implement the wave filter 2 of filtering；
It is electrically connected with wave filter 2, is used to implement the draw-out device 3 of signal extraction；
It is electrically connected with draw-out device 3, is used to implement and dry removes dry device 4；
With dry device 4 is gone to be connected, the signal stabilization device 5 of enhancing signal stationarity is used to implement；
With dry device 4 is gone to be connected, for extracting the low pass device 6 of respiratory waveform and BCG waveforms and high exchange device 7；
It is connected with signal stabilization device 5, is used to implement the spectrum analyzer 8 of line spectrum analysis.
As the preferred embodiment of the present invention, the sampling apparatus 1 uses high-speed sampler, and the wave filter 2 is using low
Pass filter device.
The operation principle of the utility model is：The small echo of dry device 4 is gone to remove dry algorithm using wavelet transform filtering realization pair
Signal goes dry, the stationarity of promotion signal, then carries out the extraction of breathing and BCG waveforms and numerical value again.Small echo goes dry to use two
The identification of root spectral line breathes and BCG spectral lines.Low pass device 6 and high exchange device 7 are after IIR lowpass analysis and IIR high pass analysis is carried out
Respiratory waveform and BCG waveforms are extracted respectively.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (2)
1. a kind of breathing and BCG signal extraction systems based on light shock sensor, which is characterized in that should be shaken based on light
The breathing of sensor and BCG signal extraction systems include：
For carrying out the sampling apparatus of signal acquisition；
It is electrically connected with sampling apparatus, is used to implement the wave filter of filtering；
It is electrically connected with wave filter, is used to implement the draw-out device of signal extraction；
It is electrically connected with draw-out device, is used to implement and dry removes dry device；
With dry device is gone to be connected, the signal stabilization device of enhancing signal stationarity is used to implement；
With dry device is gone to be connected, for extracting the low pass device of respiratory waveform and BCG waveforms and high exchange device；
It is connected with signal stabilization device, is used to implement the spectrum analyzer of line spectrum analysis.
2. breathing and BCG signal extraction systems as described in claim 1 based on light shock sensor, which is characterized in that
The sampling apparatus uses high-speed sampler, and the wave filter uses low-pass filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721555801.XU CN207397295U (en) | 2017-11-20 | 2017-11-20 | A kind of breathing and BCG signal extraction systems based on light shock sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721555801.XU CN207397295U (en) | 2017-11-20 | 2017-11-20 | A kind of breathing and BCG signal extraction systems based on light shock sensor |
Publications (1)
| Publication Number | Publication Date |
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| CN207397295U true CN207397295U (en) | 2018-05-22 |
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| CN201721555801.XU Active CN207397295U (en) | 2017-11-20 | 2017-11-20 | A kind of breathing and BCG signal extraction systems based on light shock sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111160090A (en) * | 2019-11-22 | 2020-05-15 | 新绎健康科技有限公司 | BCG signal noise reduction method and system |
| CN113080918A (en) * | 2021-03-10 | 2021-07-09 | 杭州澳芯科技有限公司 | BCG-based non-contact heart rate monitoring method and system |
-
2017
- 2017-11-20 CN CN201721555801.XU patent/CN207397295U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111160090A (en) * | 2019-11-22 | 2020-05-15 | 新绎健康科技有限公司 | BCG signal noise reduction method and system |
| CN111160090B (en) * | 2019-11-22 | 2023-09-29 | 新绎健康科技有限公司 | BCG signal noise reduction method and system |
| CN113080918A (en) * | 2021-03-10 | 2021-07-09 | 杭州澳芯科技有限公司 | BCG-based non-contact heart rate monitoring method and system |
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