CN206499449U - A kind of pulse wave gathers bracelet - Google Patents
A kind of pulse wave gathers bracelet Download PDFInfo
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- CN206499449U CN206499449U CN201621054393.5U CN201621054393U CN206499449U CN 206499449 U CN206499449 U CN 206499449U CN 201621054393 U CN201621054393 U CN 201621054393U CN 206499449 U CN206499449 U CN 206499449U
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- pulse wave
- bracelet
- touch inductor
- wave sensor
- microcontroller
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Abstract
The utility model provides a kind of pulse wave and gathers bracelet, including bracelet body and display screen, also include touch inductor, pulse wave sensor and microcontroller, the Petting Area of the touch inductor and the acquisition zone of pulse wave sensor are disposed adjacent, and the surface of the bracelet body is arranged at, the touch inductor is used to detect whether finger contacts the pulse wave collection bracelet；The detection input of the microcontroller connects the output end of the touch inductor, control signal output connects the control signal input of the pulse wave sensor, the microcontroller is used for after the detectable signal of the touch inductor output is received, and outputs control signals to the pulse wave sensor；The control signal is used to start the pulse wave sensor collection pulse wave in human fingers.Pulse wave of the present utility model gathers bracelet, and working automation degree is high, can be user-friendly.
Description
【Technical field】
The utility model is related to wearable electronic, more particularly to a kind of pulse wave collection bracelet.
【Background technology】
Present study work has obtained National Natural Science Foundation of China (NSFC) subsidy (project approval number：61571268).
The contraction and diastole of human body ventricular cycle can drive sustainer to shrink and diastole, and this can cause blood flow from sustainer
Propagated along whole arterial system root.Pulse wave is heartthrob in above process along arteries and blood flow to periphery
Formed by propagation.Therefore, the information entrained by pulse wave largely reflects many physiology in cardiovascular system of human body
Pathological characters.Collection pulse wave signal is the important prerequisite that medical diagnosis on disease and physiological parameter estimation are carried out using pulse wave.
The existing main stream approach for carrying out pulse wave non-invasive measurement using biomedical sensor is divided into two major classes：Pressure arteries and veins
Fight ripple and volume pulsation wave.The method of pressure pulse wave can bring discomfort due to producing pressure to blood vessel to tested crowd.Volume
The method of pulse wave main flow the most be exactly photoplethysmographic graphical method ((PPG, Photo PlethysmoGraphy), this
The technology of kind is using the different characteristic of absorptivity of the blood to light of not co-content, by measuring the different light through blood
Attenuation degree can obtain the situation of change of capacity of blood vessel.According to light source and the position relationship of photoelectric sensor, PPG can divide
For transmission-type and reflective.Transmission-type generally selects finger tip as measured zone, and this mode is high-quality due to that can capture
Signal, and be widely used.
At present, in the bracelet that pulse wave can be gathered, mobile phone A PP need to be coordinated to start collecting work mostly, or pass through bracelet
The switch control of upper setting starts collection, and the automaticity of collection is not high, is not easy to the use of user.Furthermore, existing bracelet
During collection, the collection position of bracelet is directed at wrist, and collection point is in the position that bracelet is affixed on wrist skin.The position
The scattering of beneath tissue is higher, and reflected signal is of low quality, causes the accuracy of the pulse wave data of collection not high.
【Utility model content】
Technical problem to be solved in the utility model is：Above-mentioned the deficiencies in the prior art are made up, a kind of pulse wave is proposed
Bracelet is gathered, working automation degree is high, can be user-friendly.
Technical problem of the present utility model is solved by following technical scheme：
A kind of pulse wave gathers bracelet, including bracelet body and display screen, in addition to touch inductor, pulse wave sensor
And microcontroller, the Petting Area of the touch inductor and the acquisition zone of pulse wave sensor are disposed adjacent, and are arranged at institute
The surface of bracelet body is stated, the touch inductor is used to detect whether finger contacts the pulse wave collection bracelet；It is described micro-
The detection input of controller connects the output end of the touch inductor, and control signal output connects the pulse wave sensing
The control signal input of device, the microcontroller is used for after the detectable signal of the touch inductor output is received, defeated
Go out control signal to the pulse wave sensor；The control signal is used to start the pulse wave sensor collection finger pulse
Ripple.
The beneficial effect that the utility model is compared with the prior art is：
Pulse wave of the present utility model gathers bracelet, by the setting of touch inductor, Petting Area and acquisition zone is adjacent sets
Put on the surface of bracelet body, coordinate the control work of microcontroller, so that finger can start collection when directly contacting Petting Area
Work, and finger also extracts pulse data while directly touch by the pulse wave sensor collection of adjacent acquisition zone.It is whole
The startup work of individual bracelet, the mobile phone A PP extra without relying on or the button of startup collection, are touched by finger and can be achieved
Collection, automaticity is high, user-friendly.Meanwhile, pulse wave sensor of the present utility model directly gathers finger arteries and veins
Fight the data of ripple, be no longer the pulse data at wrist, so that the data of collection are more accurate.
【Brief description of the drawings】
Fig. 1 is that the pulse wave of the utility model embodiment gathers the structural representation of bracelet；
Fig. 2 is that the pulse wave of the utility model embodiment gathers the operational module schematic diagram of bracelet；
Fig. 3 is the circuit structure diagram of the touch inductor of the utility model embodiment；
Fig. 4 is that the pulse wave of the utility model embodiment gathers the side structure schematic diagram of bracelet；
Fig. 5 is that the pulse wave of the utility model embodiment gathers the another side structural representation of bracelet.
【Embodiment】
With reference to embodiment and compare accompanying drawing the utility model is described in further details.
The pulse wave collection bracelet of present embodiment, for being worn at wrist.As shown in Fig. 1~2, bracelet includes
Bracelet body 100, display screen 200, touch inductor 300, pulse wave sensor 400 and microcontroller 500.Specifically, pulse
Wave sensor 400 is photo-electric pulse wave sensor.
Wherein, the Petting Area 301 of touch inductor 300 and the acquisition zone 401 of pulse wave sensor 400 are disposed adjacent, and
It is arranged at the surface of bracelet body 100.Touch inductor 300 is used to detect whether finger contacts the letter that pulse wave gathers bracelet
Breath.Specifically, the front of general bracelet sets display screen 200, the related status information for showing bracelet.Therefore, can be aobvious
The side of display screen 200 sets Petting Area 301 and acquisition zone 401, when being easy to collection pulse wave data, is observed and gathered by display screen
Situation.
The detection input of microcontroller 500 connects the output end of touch inductor 300, control signal output connection arteries and veins
Fight the control signal input of wave sensor 400, microcontroller 500 is used to receive the detection of the output of touch inductor 300
After signal, pulse wave sensor 400 is output control signals to.The control signal of the output is used to start pulse wave sensor 400
Gather pulse wave in human fingers.
During specific works, during bracelet opening of device, equipment initialization.After the completion of initialization, screen display device starts.It is logical
The control of microcontroller 500 is crossed, the pulse wave signal of bracelet opponent's finger tip is automatically gathered, photo-electric pulse wave sensor is with touching
Touch inductor to switch each other, specific control process is controlled by microcontroller 500.
During start-up operation, touch inductor 300 starts, and carries out the work of detection finger.Microcontroller 500 starts detection and touched
The signal that inductor is sent is touched, now, photo-electric pulse wave sensor is without signal acquisition.
Because initial period finger is not affixed on Petting Area and acquisition zone, touch inductor 300 is sent not to microcontroller 500
The coherent signal of finger is detected, microcontroller 500 continues to detect touch inductor 300.
When finger is affixed on Petting Area and acquisition zone, touch inductor 300 detects the information, and to microcontroller 500
Send the coherent signal for detecting finger.Microcontroller is received after the signal, is started photo-electric pulse wave sensor 400 and is entered
The collecting work of row signal, while stopping the detection work to touch inductor.In the gatherer process of pulse wave signal, docking
The collection signal received is differentiated.If the signal for differentiating collection is pulse wave signal, then it is assumed that finger is still in probe positions, letter
Number collecting work proceeds.
When finger departs from Petting Area and acquisition zone, the signal of collection will no longer be pulse wave signal.Now, microcontroller
500 detect the information, judge that finger leaves probe positions, the control of microcontroller 500 stops photoelectric sphyg wave sensor 400
Collecting work, and start the sensing work that touch inductor 300 carries out finger touch next time.
For the user of bracelet, it is only necessary to which finger finger tip is affixed on the acquisition zone of pulse wave sensor by tested personnel
On.Now, the Petting Area 301 of touch inductor 300 is because by touch sensible, so as to be detected with tested personnel.Pass through micro-control
The control of device processed, pulse wave sensor starts to gather pulse wave, and display screen then shows the mark for starting to gather pulse wave, whole hand
Ring apparatus is in the working condition of collection pulse wave.After collection terminates, tested personnel remove finger from acquisition zone, touch
Inductor 300 is detected after relevant information, by the control of microcontroller, so as to stop collection.
The bracelet of present embodiment, collection position is finger end, so as to avoid when the positions such as wrist are gathered because dissipating
Penetrate the problem of signal quality caused by problem is not high.Equipment is Wrist belt-type bracelet, and the acquisition zone of signal is located at the screen of bracelet
Side, is easy to be acquired operation to finger pulse wave signal at any time.In gatherer process, touched by finger, the touch sense of setting
Device is answered to recognize after the touch action, you can to start collection, without clicking on button or coordinating related mobile phone A PP etc. operation,
The automaticity of collection is high.
Above-mentioned touch inductor has a variety of implementations.A kind of simple in construction, low touch inductor of cost is provided below
Implementation.
As shown in figure 3, the function for the above-mentioned touch inductor of circuit realiration for passing through design.The touch inductor circuit includes
Inductance capacitance Cp, first resistor R1 and Schmitt trigger.Inductance capacitance Cp and first resistor R1 constitutes RC charge-discharge circuits.
First resistor R1 free end connects the output end of Schmitt trigger, inductance capacitance Cp free ending grounding.Inductance capacitance Cp
As Petting Area is treated, the touch zone position on foregoing bracelet is arranged on.The magnitude of voltage at inductance capacitance Cp two ends is inputted to Schmitt
The input of trigger, the output end of Schmitt trigger connects the inspection of microcontroller 500 as the output end of touch inductor
Input is surveyed, Schmitt trigger produces output signal according to the magnitude of voltage at inductance capacitance Cp two ends.
Specifically, operational amplifier U and resistance R2, R3, R4 constitute Schmitt trigger together.Second resistance R2, the 3rd
Resistance R3 and the 4th resistance R4 one end are connected, connected end concatenation operation amplifier U input in the same direction, and second resistance R2's is another
One end concatenation operation amplifier U high level reference voltage connection end, 3rd resistor R3 other end ground connection, the 4th resistance R4's
Other end concatenation operation amplifier U output end, operational amplifier U reverse input end as Schmitt trigger input
Connect the magnitude of voltage at inductance capacitance Cp two ends.In addition, the GND shown in figure is zero-potential point.S point signals are touch sensible
The induced signal of device output.G1 is drawn from S points, to connect the pin for being used to detect touch inductor of microcontroller 500.G2 tables
Show the high level reference voltage for being supplied to operational amplifier U, what the occurrence of the voltage was made up of the circuit and microcontroller etc.
High level reference voltage level in circuit system determines that the value can be supplied to operational amplifier U by microcontroller.This is specific real
Apply in mode, operational amplifier U low level reference voltage is directly connected to zero potential.The S point signals of operational amplifier U outputs
For square-wave signal, its low and high level is then by the high level reference voltage of operational amplifier, low level reference voltage the two pins
The magnitude of voltage of reception is determined.Follow-up microcontroller detects the state of low and high level to judge corresponding information.
In the circuit, in Schmitt trigger, the voltage at C2 is internal comparison reference voltage.When the voltage of C1 points
Higher than C2 points voltage when, the zero potential that connects in U output low level, i.e. present embodiment.When the voltage of C1 points is less than
During the voltage of C2 points, U output HIGH voltages, i.e. high level reference voltage G2.From the structure of circuit, inductance capacitance Cp two ends will
Constantly charge and discharge, output point S will produce periodic square-wave signal, the frequency of the square-wave signal and Cp capacitance
Size is relevant.
If R1, R2, R3, R4 resistance are r, high level reference voltage G2 value is u.It can calculate and obtain the high electricity of U outputs
During pressure, the comparison voltage at C2：When U exports low level, the comparison voltage at C2：
By RC discharge and recharge time formula：Wherein, V0For starting voltage value on electric capacity, V1For electricity
Hold the magnitude of voltage that finally can be charged to or be put into the case of coideal, VtFor the magnitude of voltage on t electric capacity.
If inductance capacitance Cp capacitance is c, the square-wave signal of the touch inductor output of the circuit realiration can be calculated
Cycle T and frequency F be respectively：T=rc*2ln (2), F=1/T.
From the foregoing, the output square-wave signal frequency of touch inductor is directly related with the capacitance of inductance capacitance.When
When finger contacts touch inductor, the capacitance of inductance capacitance becomes big, and the frequency of corresponding square-wave signal can diminish.Microcontroller
500 pass through the frequency values size for the square-wave signal for detecting touch inductor output, you can judge whether finger is affixed at probe.If
The signal frequency of (no finger touching) is fs when touch inductor is unloaded, and unloaded lower-cut-off frequency isWhereinDetermined according to the performance of the inductance capacitance of actual selection.As the output signal frequency f of touch inductor<During fd, then finger is judged
Press close to acquisition zone, start the work of pulse wave sensor 400.
When using foregoing circuit as touch inductor, when bracelet starts, Petting Area and acquisition zone keep Light Condition
One minute.Now, the idling frequency of microcontroller detection touch inductor is fs, and stores the idling frequency as follow-up judgement
Standard.Microcontroller calculates the lower limit fd for obtaining idling frequency using fs.Microcontroller continues to detect that touch inductor is sent
Signal, and obtained current demand signal frequency f is made comparisons with idling frequency lower limit, if f>=fd, then judge that no finger is affixed on
Petting Area and acquisition zone, proceed to detect the process of finger.If f<Fd, then it is assumed that have finger to be affixed at probe, then stop inspection
Survey the work of touch inductor.Meanwhile, start the collecting work that photo-electric pulse wave sensor carries out pulse wave.In pulse wave
In gatherer process, microcontroller is detected to the signal of collection, and whether judge the signal is pulse wave signal.If so, then after
Continuous pulse wave collecting work；Otherwise, it is judged as that finger has been moved off acquisition zone, then controls photo-electric pulse wave sensor to stop work
Make.Meanwhile, start the detection work of touch inductor next time.
Touch inductor 300 is used as by foregoing circuit so that in gatherer process, based on the touch action recognized
Start collection, without clicking on button or coordinating related mobile phone A PP etc. operation, the automaticity of collection is high.Meanwhile, circuit
Simple in construction, cost is low, is easy to be integrated into bracelet.
Preferably, computing module is also included in microcontroller, computing module is used for the hand gathered according to pulse wave sensor
Referring to pulse wave signal calculating includes at least one of blood pressure, blood oxygen saturation, heart rate, respiratory rate.So, the meter of setting is passed through
Module is calculated using the pulse wave data collected, the one or more in blood pressure, blood oxygen, heart rate and respiratory rate are calculated.Calculate
Module is integrated on fpga chip or dsp chip, using fpga chip or DSP chips to complex data parallel processing
The peculiar advantage having in terms of ability, the operational efficiency of raising algorithm, greatly improves the calculating performance of bracelet.
Preferably, as shown in figure 4, bracelet equipment side sets a storage card slot 600, storage is set for pluggable
Card, thus locates to install and remove storage card.During work, by the cooperation between microcontroller and card slot, control will be collected
Pulse wave data store into storage card.After the completion of all collecting works, storage card can be extracted, by computer etc. its
He reads the pulse wave data collected equipment.By setting neck and pluggable storage card, Large Copacity arteries and veins can be carried out
The storage and acquisition of wave number of fighting evidence, facilitate follow-up analyzing and diagnosing to work.In addition, charging also can be set in the side of bracelet equipment
Mouth 700, can connect charging wire opponent's ring apparatus by charging inlet 700 and be charged.As shown in figure 5, the side of bracelet equipment
A total shift knob 800 also can be set.When not using bracelet equipment collection pulse wave, can long-press total switch press
Button 800, closes equipment.
Further, bracelet equipment also includes wireless communication module (not shown), and it has wireless transmission function, can
To be the communications such as 3G, 4G, bluetooth, LAN, near-field communication.By taking bluetooth module as an example, in the situation of opening of device
Under, bluetooth connection function is opened, with other electronic equipments for possessing Bluetooth transmission function, is attached such as mobile phone.Connection
After the completion of, you can operate to obtain the pulse wave data gathered in the bracelet equipment on the electronic equipment of connection.If in bluetooth
Function is opened after 10s, and no equipment is attached, or disconnecting reaches 10s, and bracelet equipment can close bluetooth connection automatically
Function.By setting above-mentioned bluetooth module, bluetooth connection and corresponding data transfer can be achieved.
Above content is to combine specific preferred embodiment further detailed description of the utility model, it is impossible to
Assert that specific implementation of the present utility model is confined to these explanations.For the ordinary skill of the utility model art
For personnel, some replacements or substantially modification, and performance or purposes are made without departing from the concept of the premise utility
It is identical, it should all be considered as belonging to protection domain of the present utility model.
Claims (10)
1. a kind of pulse wave gathers bracelet, including bracelet body and display screen, it is characterised in that：Also include touch inductor, arteries and veins
Fight wave sensor and microcontroller, the Petting Area of the touch inductor and the acquisition zone of pulse wave sensor are disposed adjacent, and
The surface of the bracelet body is arranged at, the touch inductor is used to detect whether finger contacts the pulse wave collection hand
Ring；The detection input of the microcontroller connects the output end of the touch inductor, and control signal output connection is described
The control signal input of pulse wave sensor, the microcontroller is used to receive the detection of the touch inductor output
After signal, the pulse wave sensor is output control signals to；The control signal is adopted for starting the pulse wave sensor
Collect pulse wave in human fingers.
2. pulse wave according to claim 1 gathers bracelet, it is characterised in that：The touch inductor includes induced electricity
Hold, first resistor and Schmitt trigger, the inductance capacitance and first resistor constitute RC charge-discharge circuit, the first resistor
Free end connect the output end of the Schmitt trigger, the free ending grounding of the inductance capacitance, the inductance capacitance two
The magnitude of voltage at end is inputted to the input of the Schmitt trigger, and the output end of the Schmitt trigger is used as touch sensible
The output end of device, connects the detection input of the microcontroller, the Schmitt trigger is according to the inductance capacitance two ends
Magnitude of voltage produce output signal.
3. pulse wave according to claim 2 gathers bracelet, it is characterised in that：The Schmitt trigger is put including computing
Big device, second resistance, 3rd resistor and the 4th resistance, the second resistance, 3rd resistor are connected with one end of the 4th resistance, phase
The input in the same direction of the Lian Duan connections operational amplifier, the other end of the second resistance connects the height of the operational amplifier
Level reference voltage connection end, the other end ground connection of the 3rd resistor, the other end of the 4th resistance connects the computing
The output end of amplifier, the reverse input end of the operational amplifier is described as the input connection of the Schmitt trigger
The magnitude of voltage at inductance capacitance two ends.
4. pulse wave according to claim 1 gathers bracelet, it is characterised in that：The Petting Area and acquisition zone are arranged at
The side of the display screen on the bracelet body.
5. pulse wave according to claim 1 gathers bracelet, it is characterised in that：The pulse wave sensor is photo-electric arteries and veins
Fight wave sensor.
6. pulse wave according to claim 1 gathers bracelet, it is characterised in that：Also include calculating mould in the microcontroller
Block, the pulse wave in human fingers signal of change that the computing module is used to be gathered according to the pulse wave sensor includes blood pressure, blood oxygen
At least one of saturation degree, heart rate, respiratory rate.
7. pulse wave according to claim 6 gathers bracelet, it is characterised in that：The computing module is integrated in fpga chip
Or on dsp chip.
8. pulse wave according to claim 1 gathers bracelet, it is characterised in that：Card is additionally provided with the bracelet body
Groove, the neck is used for pluggable installation storage card.
9. pulse wave according to claim 1 gathers bracelet, it is characterised in that：Charging is additionally provided with the bracelet body
Interface.
10. pulse wave according to claim 1 gathers bracelet, it is characterised in that：Also include wireless communication module, the nothing
Line communication module is used for the pulse wave data gathered by pulse wave sensor described in wireless transmission.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621054393.5U CN206499449U (en) | 2016-09-13 | 2016-09-13 | A kind of pulse wave gathers bracelet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621054393.5U CN206499449U (en) | 2016-09-13 | 2016-09-13 | A kind of pulse wave gathers bracelet |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107693006A (en) * | 2017-10-24 | 2018-02-16 | 海南和家健康科技有限公司 | A kind of low-power consumption electrocardiogram signal acquisition circuit |
| CN107802259A (en) * | 2017-12-18 | 2018-03-16 | 苏州安莱光电科技有限公司 | A kind of blood pressure monitoring device based on smart machine and wearable bracelet |
| CN108771538A (en) * | 2018-07-05 | 2018-11-09 | 江苏医药职业学院 | A kind of blood monitoring system |
| CN109709613A (en) * | 2018-12-24 | 2019-05-03 | 福建联迪商用设备有限公司 | A kind of method, terminal and circuit whether detection wearable device is dressed |
| CN109833035A (en) * | 2017-11-28 | 2019-06-04 | 深圳市岩尚科技有限公司 | The classification prediction data processing method of pulse wave blood pressure measuring device |
-
2016
- 2016-09-13 CN CN201621054393.5U patent/CN206499449U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107693006A (en) * | 2017-10-24 | 2018-02-16 | 海南和家健康科技有限公司 | A kind of low-power consumption electrocardiogram signal acquisition circuit |
| CN109833035A (en) * | 2017-11-28 | 2019-06-04 | 深圳市岩尚科技有限公司 | The classification prediction data processing method of pulse wave blood pressure measuring device |
| CN107802259A (en) * | 2017-12-18 | 2018-03-16 | 苏州安莱光电科技有限公司 | A kind of blood pressure monitoring device based on smart machine and wearable bracelet |
| CN108771538A (en) * | 2018-07-05 | 2018-11-09 | 江苏医药职业学院 | A kind of blood monitoring system |
| CN108771538B (en) * | 2018-07-05 | 2020-12-04 | 江苏医药职业学院 | Blood monitoring system |
| CN109709613A (en) * | 2018-12-24 | 2019-05-03 | 福建联迪商用设备有限公司 | A kind of method, terminal and circuit whether detection wearable device is dressed |
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