CN109124579A - One kind being based on flexible force sensitive sensor array from arterial pulse localization method - Google Patents
One kind being based on flexible force sensitive sensor array from arterial pulse localization method Download PDFInfo
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/48—Other medical applications
- A61B5/4854—Diagnosis based on concepts of traditional oriental medicine
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6843—Monitoring or controlling sensor contact pressure
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Abstract
The invention proposes a kind of based on flexible force sensitive sensor array from arterial pulse localization method.Judge by comparing the amplitude variation degree in a period of time of different sensors in sensor array whether the sensor is located at pulse area, to achieve the purpose that be automatically positioned pulse.The present invention overcomes conventional methods not can be carried out automatic initial alignment, the lower defect low with method transmission cost height, diagnosis accuracy is had proposed of adaptivity.It is therefore proposed to which one kind can be automatically positioned, human pulse position, transmission cost is low, transmission accuracy is high and adaptivity is good from arterial pulse localization method.
Description
Technical field
The invention belongs to pulse signal detection fields, are related to a kind of based on flexible force sensitive sensor array automatic positioning pulse
Location method.
Background technique
With the promotion of today's society medical level, traditional tcm diagnosis mode also results in the extensive concern of people.
Traditional Chinese Medicine is analyzed by the bounce situation to pulse, it can be determined that the health degree of human body.Due to examining for Traditional Chinese Medicine
Disconnected mode is noninvasive, and has the advantages that low-risk, low cost and stability are high, therefore, can be automatic using state-of-the-art technology
Carrying out TCM pulse diagnosis just becomes hot spot concerned by people.
Existing electronic pulse feeling device uses force-sensing sensor, and the pulse by acquiring three positions of human body cun,guan,chi is believed
Number, obtain the essential informations such as frequency, the intensity of beat pulse, when use need to be by manually positioning pulse, the above method
There is also many defects.First, can not accurately be automatically positioned the corresponding position convenient for diagnosis, diagnostic result height according to
Rely the accuracy worn in electropulsograph, diagnostic result confidence level is not high；Second, existing pulse condition analyser generallys use the quick sensing of flexible force
Device array acquires the beat pulse information of cun,guan,chi and its corresponding site simultaneously, and collected all signals are carried out simultaneously
It all sends host computer after processing to, wherein the signal transmitted further includes the noise signal of pulseless beat region, therefore increases
Transmission cost, reduces the accuracy of transmission accuracy and diagnosis；Third, it has been suggested that one kind have automatic positioning pulse position
There is also deficiencies for the pulse signal detection device set: also needing that initial pulse position is positioned manually, freedom degree is lower, cannot be well
The problem of matching the different pulse locations that different people has.It cannot adapt to different thicknesses, hand of different shapes automatically well
Wrist also needs manual adjustment.
It is therefore proposed that it is a kind of can be automatically positioned human pulse position, transmission cost is low, transmission accuracy is high, oneself
Adaptability is good to have great importance from arterial pulse localization method.
Summary of the invention
The purpose of the invention is to realize the automatic positioning of pulse location, overcome the prior art due to measurement position and survey
Measure the problem that transmission cost caused by the inaccuracy of range is high, diagnosis accuracy is low；The method of having proposed is overcome to still need to artificial first
The not high problem of beginningization measurement position, adaptivity and the one kind proposed can be automatically positioned human pulse position, transmission cost
It is low, accuracy is high, adaptivity is good from arterial pulse localization method.
Since pulse wave has the characteristics that cyclically-varying, and variation degree is much larger than the variation degree of noise, therefore this
Invention proposes a kind of same sensor of utilization after a period of time, and the difference of signal amplitude variation degree carries out pulse location
The method of positioning.
The present invention is implemented as follows:
Flexible force sensitive sensor array is covered into whole wrists to acquire pulse signal, then passes through collected signal
Filter circuit is filtered, and digital filtering is carried out after A/D conversion circuit；
Record the pulse wave signal of the different sensors of flexible force sensitive sensor array；
Record pulse wave signal in a period of time；
Corresponding signal is most worth deviation in one section of sampling time of more same sensor；
Judge whether sensor is located in pulse range.
Optionally, the different sensors pulse wave signal of record flexible force sensitive sensor array includes:
By the different sensors position coordinates of flexible force sensitive sensor array；
Obtained signal is normalized, the signal strength matrix of different sensors is obtained.
Optionally, recording pulse wave signal in a period of time includes:
Record a series of signal intensity matrix in a period of time after different sampling instant different sensors normalization.
Optionally, corresponding signal most value deviation includes: in one section of sampling time of more same sensor
The maxima and minima of each element in above-mentioned a series of signal intensity matrix is proposed respectively, is constituted maximum
Two most value matrixs are subtracted each other and do signed magnitude arithmetic(al) and obtain most value deviation matrix by amplitude matrix and minimum amplitude matrix.
Optionally, judging whether sensor is located in pulse range includes:
The value of element each in matrix is compared with threshold value, retains its respective sensor if element value is greater than threshold value
Pulse wave signal, it is on the contrary then abandon.
Optionally, the characteristic that threshold value has are as follows:
Absolute value close to zero, greater than zero and greater than noise maxima and minima difference.
Compared with prior art, beneficial effects of the present invention: first is that can be very good by the above method to pulse location
It is automatically positioned, and adaptivity with higher, can overcome can since inaccurate caused diagnostic result is positioned manually
The not high problem of reliability；Second is that eliminating redundancy in transmission process, improve transmission accuracy, reduce transmission at
This, to improve the accuracy of diagnosis.
Detailed description of the invention
Fig. 1 is a kind of based on flexible force sensitive sensor array automatic positioning pulse location method flow diagram；
Fig. 2 is a kind of based on flexible force sensitive sensor array automatic positioning pulse location Method And Principle schematic diagram；
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Not
It is detached from the case of the principle of the present invention, variation, modification, replacement and deformation is made to the embodiment of the present invention and belong to protection of the present invention
Range.
The embodiment of the invention provides a kind of sides that automatic positioning pulse location is carried out based on flexible force sensitive sensor array
Method, as shown in Figure 1, which comprises
S11, Signal acquiring and processing.
Specifically, by the whole wrists of flexible force sensitive sensor array covering to acquire pulse signal, it then will be collected
Signal is filtered by filter circuit, carries out digital filtering after A/D conversion circuit, will treated that signal reaches is upper
Machine, this method are able to ascend the quality of signal.
S12, record different sensors pulse wave signal.
Specifically, the sensor of different location in sensor array is marked with accordingly by the present invention for the ease of signal processing
Coordinate.
It optionally, can be by the different sensors position coordinates of flexible force sensitive sensor array:
Optionally, in order to eliminate different people pulse amplitude individual difference, the present invention using method for normalizing pre-process
Signal, and the signal amplitude after sensor each in sensor array normalization is constituted into amplitude matrix V:
S13, pulse wave signal in record a period of time.
Specifically, the amplitude variation due to pulse area changes greatly than the noise amplitude in pulseless region, the present invention
It is greater than the amplitude variation degree within pulse cycle using different sensors in sensor array and differentiates the sensor
Whether it is located in pulse area.A series of signal strength matrix V of different sensors is obtained by being greater than a pulse cycle1~
Vn。
S14, corresponding signal is most worth deviation in one section of sampling time of more same sensor.
Specifically, differentiating to the corresponding element for being greater than a series of resulting amplitude matrixes in a pulse cycle, count
The maxima and minima in each element period is calculated, and the maximum value of all elements is constituted into maximum amplitude matrix Vmax,
Similarly construct corresponding minimum amplitude matrix Vmin。
As shown in Fig. 2, wherein S21 is maximum amplitude matrix in greater than one pulse cycle sampling time, S22 is greater than one
Minimum amplitude matrix in a pulse cycle sampling time.Optionally, the present invention takes absolute value after using maximum value to subtract minimum value
Difference between positive negativity and more identical sensor most value of the method to eliminate amplitude variation, i.e., by matrix VmaxAnd matrix Vmin
In corresponding element carry out subtracting each other the operation that takes absolute value:
Eij=| VMax (i, j)-VMin (i, j)| (4)
Obtain corresponding most value deviation matrix E:
S15, judge whether it is pulse area.
Specifically, the value of element each in matrix E is compared with threshold epsilon:
Eij> ε (6)
Threshold epsilon in formula (6) should have close to zero, greater than zero and be greater than noise maxima and minima difference
The characteristic of absolute value, as shown in formula (7).
|Imax-Imin| < ε (7)
I in formula (7)maxFor noise maximum amplitude, IminFor noise minimum amplitude.
Think that sensor corresponding to the element is located in pulse range if element in matrix E meets (6) formula, otherwise abandons
The sensor signal has just achieved the purpose that be automatically positioned pulse area in this way, as shown in S23 in Fig. 2.Optionally, specific threshold
Value can be by being manually specified.
A kind of flexible force sensitive sensor array automatic positioning pulse location method that is based on proposed by the present invention utilizes flexible force
Dependent sensor array acquisition pulse amplitude value matrix, further according to the signal amplitude for being greater than identical sensor in pulse cycle,
Give up the lesser point of deviation, retains the biggish point of deviation and positioned with reaching from arterial pulse.The reduction of the present invention compared with existing method
Transmission cost, improves transmission accuracy, improves the accuracy of diagnosis.
The above, one of preferred embodiment only of the present invention, when not departing from the principle of the present invention, to the present invention
Embodiment makes variation, modification, replacement and deformation and all falls in the scope of protection of the present invention.
Claims (8)
1. it is a kind of based on flexible force sensitive sensor array from arterial pulse localization method, it is characterised in that: by the quick sensing of flexible force
Device array covers whole wrists, changes strong and weak determining effective pulse location according to each sensor unit signal.
2. it is as described in claim 1 it is a kind of based on flexible force sensitive sensor array from arterial pulse localization method, feature exists
In: steps are as follows for above-mentioned pulse localization method:
2-1 Signal acquiring and processing；
2-2 records different sensors pulse wave signal；
2-3 record is greater than pulse wave signal in a pulse cycle；
Corresponding signal is most worth deviation in 2-4 one section of sampling time of more same sensor；
2-5 judges whether it is pulse area.
3. it is as claimed in claim 2 it is a kind of based on flexible force sensitive sensor array from arterial pulse localization method, feature exists
In Signal acquiring and processing includes: that flexible force sensitive sensor array is covered whole wrists to acquire pulse signal, then will be adopted
The signal collected is filtered by filter circuit, and digital filtering is carried out after A/D conversion circuit, and by treated, signal is passed
To host computer.
4. it is as claimed in claim 2 it is a kind of based on flexible force sensitive sensor array from arterial pulse localization method, feature exists
In, record different sensors pulse wave signal include: by the different sensors position coordinatesization of flexible force sensitive sensor array simultaneously
Signal amplitude after sensor each in sensor array normalization is constituted into amplitude matrix V.
5. it is as claimed in claim 2 it is a kind of based on flexible force sensitive sensor array from arterial pulse localization method, feature exists
In it includes: to obtain a series of not simultaneous interpretations by being greater than a pulse cycle that record, which is greater than pulse wave signal in a pulse cycle,
The signal strength matrix V of sensor1~Vn。
6. it is as claimed in claim 2 it is a kind of based on flexible force sensitive sensor array from arterial pulse localization method, feature exists
In corresponding signal most value deviation includes: by above-mentioned a series of signal intensity square in one section of sampling time of more same sensor
The maxima and minima of each element in battle array respectively constitutes maximum amplitude matrix VmaxWith minimum amplitude matrix Vmin, by two
Most value matrix corresponding element, which subtracts each other, to be done signed magnitude arithmetic(al) and obtains most value deviation matrix E.
7. it is as claimed in claim 2 it is a kind of based on flexible force sensitive sensor array from arterial pulse localization method, feature exists
In judging whether it is pulse area includes: then to protect the element in most value deviation matrix if more than threshold value one by one with threshold value comparison
The signal for staying sensor corresponding to the element, otherwise then abandons.
8. it is as claimed in claim 7 it is a kind of based on flexible force sensitive sensor array from arterial pulse localization method, feature exists
In: threshold value should have close to zero, the characteristic of the absolute value greater than zero and greater than noise maxima and minima difference.
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Cited By (5)
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| CN109907741A (en) * | 2019-03-06 | 2019-06-21 | 珠海市万瑙特健康科技有限公司 | Display methods, device, computer equipment and the storage medium of three-dimensional pulse wave |
| CN109938705A (en) * | 2019-03-06 | 2019-06-28 | 珠海市万瑙特健康科技有限公司 | Display methods, device, computer equipment and the storage medium of three-dimensional pulse wave |
| CN110123275A (en) * | 2019-05-08 | 2019-08-16 | 深圳前海达闼云端智能科技有限公司 | Artery position detection device and method |
| CN110575144A (en) * | 2019-09-18 | 2019-12-17 | 钛深科技(深圳)有限公司 | Head-mounted device for monitoring human health information based on pressure sensing array |
| CN114052676A (en) * | 2021-11-19 | 2022-02-18 | 南开大学 | Traditional Chinese medicine pulse simplifying array sensor and full-array pulse information acquisition algorithm thereof |
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Cited By (6)
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