CN207477498U - Sitting posture detection device for vital signs and system - Google Patents
Sitting posture detection device for vital signs and system Download PDFInfo
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- CN207477498U CN207477498U CN201720367852.3U CN201720367852U CN207477498U CN 207477498 U CN207477498 U CN 207477498U CN 201720367852 U CN201720367852 U CN 201720367852U CN 207477498 U CN207477498 U CN 207477498U
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Abstract
The utility model provides a kind of sitting posture detection device for vital signs and system, belongs to field of medical equipment.The system comprises user terminals,Cloud Server and sitting posture detection device for vital signs,Described device includes ballistocardiography acquisition module,Channels and collaterals signals acquisition module,Signal processing module,Alarm module and LORA wireless communication modules,Treated described in Cloud Server from acquisition ballistocardiography signal and extract signal characteristic in channels and collaterals signals,Signal characteristic is compared with the pre-stored model for representing physical condition,To obtain the vital sign testing result of user,Vital sign testing result is generated into corresponding alarm signal again and is sent to alarm module,The alarm signal that alarm module is sent further according to Cloud Server is alarmed,So as to quickly detect the physical condition of user and user is allowed to know dangerous situation in time,And user can on the subscriber terminal real time inspection and understand the physical condition of itself,Occur to avoid unfortunate thing.
Description
Technical field
The utility model is related to field of medical equipment, in particular to a kind of sitting posture detection device for vital signs and are
System.
Background technology
Heart disease is that one of highest disease of the death rate, China's deaths from heart disease rate account for various disease deaths in the world at present
The 10%-20% of rate, and it is in rising trend.Therefore for improving cardiopathic early diagnosis and therapy method with particularly significant
Meaning.Cardiac pumping can make the stress for the supporting object being in close contact with human body change, and recorded and be just known as
Ballistocardiography (Ballistocardiogram, BCG).BCG signals reflect the working condition of cardiovascular system, without in people
Acquisition can be facilitated by showing consideration for attached sensor, and detection method can obtain it in the case where subject is not felt by measuring state
Cardiomotility situation, long-time service will not cause psychological burden to subject.A large amount of useful angiocarpy are contained in BCG signals
System physiologic information, it can effectively assist doctor to diagnose and analyze various angiocardiopathies, and realization will effectively
Promote the raising of level of human health.
Signal processing mode of the prior art is unit processing, and signal processing end volume is larger, and processing speed is slower,
Prevent user from knowing the physical condition of itself in time.
Therefore, how to quickly detect the physical condition of user and user is allowed to know dangerous situation in time, avoid misfortune
Thing occur, be current urgent problem.
Utility model content
The purpose of this utility model is to provide a kind of sitting posture detection device for vital signs and system, to improve above-mentioned ask
Topic.
What the embodiment of the utility model was realized in：
A kind of sitting posture detection device for vital signs, applied to sitting posture vital sign detecting system, the system also includes clouds
Server, described device include ballistocardiography acquisition module, channels and collaterals signals acquisition module, signal processing module, alarm module and
LORA wireless communication modules, the ballistocardiography acquisition module, the channels and collaterals signals acquisition module with the signal processing mould
Block couples, and the signal processing module couples with the LORA wireless communication modules, the LORA wireless communication modules, described
Alarm module is used to couple with the Cloud Server, and the ballistocardiography acquisition module is arranged on Chain cushion and backrest
On；The ballistocardiography acquisition module is used to acquire the ballistocardiography signal of user；The channels and collaterals signals acquisition module is used to adopt
Collect the channels and collaterals signals of the user；The signal processing module is used to believe the ballistocardiography signal of acquisition with the channels and collaterals
It number is amplified and filtering process, and will treated that ballistocardiography signal passes through the LORA radio communication molds with channels and collaterals signals
Block is sent to the Cloud Server；The Cloud Server is used for from treated described in acquisition ballistocardiography signal and channels and collaterals letter
Signal characteristic is extracted in number, the signal characteristic is the ballistocardiography signal for characterizing user's vital sign parameter
The temporal signatures and frequency domain character of temporal signatures and frequency domain character and the channels and collaterals signals, by the signal characteristic with depositing in advance
The model of the expression physical condition of storage is compared, to obtain the vital sign testing result of the user, and according to the life
Life sign testing result generates corresponding alarm signal and is sent to the alarm module；The alarm module is used for according to the cloud
The alarm signal that server is sent is alarmed.
A kind of sitting posture vital sign detecting system, the system comprises user terminal, Cloud Server and sitting posture vital signs
Detection device, the user terminal are coupled with the Cloud Server, and the Cloud Server is filled with sitting posture vital sign detection
Put coupling.
The advantageous effect of the utility model embodiment is：
The utility model embodiment provides a kind of sitting posture detection device for vital signs and system, and mould is acquired by ballistocardiography
The ballistocardiography signal of block acquisition user and the channels and collaterals signals of channels and collaterals signals acquisition module acquisition user, then the heart is impacted
Figure signal is amplified with the channels and collaterals signals and filtering process, and ballistocardiography signal passes through with channels and collaterals signals by treated
The LORA wireless communication modules are sent to the Cloud Server, and from treated described in acquisition, the heart impacts the Cloud Server
Signal characteristic is extracted in figure signal and channels and collaterals signals, the signal characteristic is the described of characterization user's vital sign parameter
The temporal signatures and frequency domain character of ballistocardiography signal and the temporal signatures and frequency domain character of the channels and collaterals signals, by the letter
Number feature is compared with the pre-stored model for representing physical condition, to obtain the vital sign of user detection knot
Fruit, and corresponding alarm signal is generated according to the vital sign testing result and is sent to the alarm module, alarm module is again
According to the Cloud Server send alarm signal alarm, so as to quickly detect the physical condition of user and and
When user is allowed to know dangerous situation, and user real time inspection and can understand the physical condition of itself on the subscriber terminal, to keep away
Exempt from unfortunate thing to occur.
Description of the drawings
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the structure diagram of a kind of sitting posture vital sign detecting system that the utility model embodiment provides；
Fig. 2 is the structure diagram of a kind of LORA wireless communication modules that the utility model embodiment provides；
Fig. 3 is the circuit diagram of a kind of LORA wireless communication modules that the utility model embodiment provides；
Fig. 4 is the structure diagram of a kind of signal processing module that the utility model embodiment provides；
Fig. 5 is the circuit diagram of a kind of pre-amplification circuit that the utility model embodiment provides；
Fig. 6 is the circuit diagram of a kind of suppression common mode signal circuit that the utility model embodiment provides；
Fig. 7 is the circuit diagram of a kind of low-pass filter circuit that the utility model embodiment provides；
Fig. 8 is the circuit diagram of a kind of rejector circuit that the utility model embodiment provides；
Fig. 9 is the circuit diagram of a kind of rear class amplifying circuit that the utility model embodiment provides；
Figure 10 is the waveform diagram of a kind of ballistocardiography signal that the utility model embodiment provides.
Icon：200- sitting posture vital sign detecting systems；210- Cloud Servers；220- user terminals；100- sitting posture life
Sign detection device；110- ballistocardiography acquisition modules；120- channels and collaterals signals acquisition modules；130-LORA wireless communication modules；
132- modulation circuits；134- signal circuits；1342- radiating circuits；1344- receiving circuits；136- control circuits；138- believes
Number antenna；140- signal processing modules；141- pre-amplification circuits；142- suppression common mode signal circuits；143- low-pass filtering electricity
Road；144- rejector circuits；145- rear class amplifying circuits；150- alarm modules.
Specific embodiment
Purpose, technical scheme and advantage to make the utility model embodiment are clearer, new below in conjunction with this practicality
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, instead of all the embodiments.Usually here described in attached drawing and
The component of the utility model embodiment shown can be configured to arrange and design with a variety of different.
Therefore, requirement is not intended to limit to the detailed description of the embodiment of the utility model provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, those of ordinary skill in the art's all other embodiments obtained without creative efforts, all
Belong to the range of the utility model protection.
It should be noted that：Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need to that it is further defined and explained in subsequent attached drawing.
In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, and it is not intended that instruction or hint
Relative importance.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set
Put ", " coupling ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected,
Or it is integrally connected；Can be mechanical connection or electrical connection；It can be directly connected, intermediary can also be passed through
It is indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, it can be managed with concrete condition
Solve concrete meaning of the above-mentioned term in the utility model.
Other feature and advantage of the utility model will illustrate, also, in subsequent specification partly from specification
It becomes apparent or is understood by implementing the utility model embodiment.The purpose of this utility model and other advantages can
It realizes and obtains by specifically noted structure in the specification, claims and attached drawing write.
Fig. 1 is please referred to, Fig. 1 is the knot of a kind of sitting posture vital sign detecting system 200 that the utility model embodiment provides
Structure block diagram, the system comprises user terminal 220, Cloud Server 210 and sitting posture detection device for vital signs 100, the users
Terminal 220 is coupled with the Cloud Server 210, the Cloud Server 210 and 100 coupling of sitting posture detection device for vital signs
It closes.
The user terminal 220 can be PC (personal computer, PC), tablet computer, intelligent hand
The terminals such as machine, personal digital assistant (personal digital assistant, PDA), wearable device.In the present embodiment
In, observe and understand the vital sign situation of itself in real time for the ease of user, the user terminal 220 is smart mobile phone, with
Just it can take measures, avoid accidents in time when being in danger dangerous or fortuitous event.
Cloud Server 210 (Elastic Compute Service, abbreviation ECS) is that a kind of processing capacity can elastic telescopic
Calculating service, way to manage is more simple and efficient than physical server.Cloud Server 210 help your rapid build it is more stable,
The application of safety reduces the difficulty and entirety IT costs of exploitation O＆M, you is enable to focus more on the innovation of core business.It is described
Cloud Server 210 has many advantages, such as high-performance throughput calculation ability, high density, virtualization, extending transversely and parallel computation.
The sitting posture detection device for vital signs 100 includes ballistocardiography acquisition module 110, channels and collaterals signals acquisition module
120th, signal processing module 140, alarm module 150 and LORA wireless communication modules 130, the ballistocardiography acquisition module 110,
The channels and collaterals signals acquisition module 120 is coupled with the signal processing module 140, the signal processing module 140 with it is described
LORA wireless communication modules 130 couple, and the LORA wireless communication modules 130, the alarm module 150 are used to and the cloud
Server 210 couples.
In Heart Beat procedure, body can generate the microvibration for being parallel to vertebra direction, by detecting the vibration, using
Signal processing can obtain ballistocardiography signal, so in order to reduce extraneous interference, improve the accuracy of acquisition signal, can
The ballistocardiography acquisition module 110 is arranged on Chain cushion and backrest, the blood circulation in sitting posture of such human body
Body is made to act the power in chair, the direction of power is vertical direction, as a kind of embodiment, ballistocardiography acquisition dress
It puts and piezoelectric film sensor can be used is acquired, it can be by the piezoelectric film sensor by the weight of user, the weight of chair
And the active force that body generates chair during heartbeat is converted into measurable electrical output signal, that is, the ballistocardiography of user
Signal is amplified and filtering process by the ballistocardiography signal transmission to signal processing module 140.The piezoelectric membrane senses
Utensil has the advantages that high sensitivity, fast response time, reliability are high and detection area is big, in addition, the piezoelectric film sensor
PVF 2-11-0.125-EK can be used in model.
In order to which the processing of ballistocardiography signal is given to provide reference, and more foundations are provided for user's body State Diagnosis, carried
High diagnosis efficiency and quality also need acquisition channels and collaterals signals in the present embodiment, certainly in a practical situation, can also acquire pulse letter
Number or other can react the characteristic signal of user's body situation.The channels and collaterals signals acquisition module 120 is used to acquire the warp of user
Network signal, as a kind of embodiment, which can be used channels and collaterals sensor and carries out adopting for channels and collaterals signals
Collection, then the channels and collaterals signals of acquisition are transmitted to signal processing module 140 and are amplified and filtering process.
The signal processing module 140 is used to be amplified the ballistocardiography signal of acquisition and the channels and collaterals signals
And filtering process, and ballistocardiography signal is sent with channels and collaterals signals by the LORA wireless communication modules 130 by treated
To the Cloud Server 210.
The LORA wireless communication modules 130 are used to treated the ballistocardiography signal and channels and collaterals signals being sent to
The Cloud Server 210, in the present embodiment, LORA wireless communication modules 130 are half duplex mode of communication, and working frequency is
410M-525MHz, reception electric current are 14mA, and its emission current 120mA, and the bandwidth of emission current is 20dBm, transmission power
It is adjustable：5~20dBm, and stepping is 1dB, the reachable -148dBm of receiving sensitivity, transmission rate is 0.123~300kbps.LORA
Wireless communication module 130 uses spread spectrum mode and efficient forward error correction channel technology, so as to LORA wireless communication modules
130 can have higher receiving sensitivity, while strong antijamming capability, also have the excellent of long distance transmission and low-power consumption
Point.
Fig. 2 is please referred to, Fig. 2 is the structural frames of a kind of LORA wireless communication modules 130 that the utility model embodiment provides
Figure.Wherein, the LORA wireless communication modules 130 include：Modulation circuit 132, signal circuit 134,136 and of control circuit
Signal antenna 138；The modulation circuit 132 is coupled with the signal processing module 140, and the signal circuit 134 is distinguished
Coupled with the modulation circuit 132 and the control circuit 136, the control circuit 136 also respectively with the signal antenna 138
It is coupled with the modulation circuit 132, the signal antenna 138 is coupled with the Cloud Server 210.The signal circuit
134 include：Radiating circuit 1342 and receiving circuit 1344, the input terminal of the radiating circuit 1342 and the modulation circuit 132
Output terminal coupling, the output terminal of the radiating circuit 1342 couples with the control circuit 136, the receiving circuit 1344
Input terminal of the output terminal also with the modulation circuit 132 couples, and the input terminal of the receiving circuit 1344 is also electric with the control
Road 136 couples.
Modulation circuit 132 is used to carry out the ballistocardiography signal and channels and collaterals signals that get from signal processing module 140
Modulation, and modulated signal is sent to signal circuit 134.Furthermore modulation circuit 132 is additionally operable to by control electricity
Road 136 is controlled, with the transmitting or reception of control signal transmission circuit 134.
Fig. 3 is please referred to, Fig. 3 is that a kind of circuit for LORA wireless communication modules 130 that the utility model embodiment provides is former
Reason figure.The modulation circuit 132 includes：Modulate chip U1, the first capacitance C1, the second capacitance C2, third capacitance C3, the 4th capacitance
C4, the 5th capacitance C5, the 6th capacitance C6 and crystal oscillator O1, the modulation chip U1 respectively with one end of the first capacitance C1, second
One end of capacitance C2, one end coupling of one end of third capacitance C3, the 4th capacitance C4, one end of the crystal oscillator O1 and described first
One end coupling of capacitance C1, the other end of the crystal oscillator O1 are coupled with one end of the second capacitance C2, and the first capacitance C1's is another
One end, the other end of the second capacitance C2, the other end of third capacitance C3 and the 4th capacitance C4 the other end be grounded, the 5th electricity
The one end for holding C5 is coupled with one end of the 6th capacitance C6 with the modulation chip U1, the other end of the 5th capacitance C5 and the
The other end of six capacitance C6 is grounded.
By above-mentioned connection relation, the coupling of crystal oscillator O1 and modulation chip U1 can ensure to modulate the normal work of chip U1
Make, and after the coupling of capacitance and modulation chip U1, capacitance is filtered by it or the function of energy storage, to ensure modulation chip U1 just
Often work.
Signal circuit 134 is used to ballistocardiography signal and channels and collaterals signals that modulation circuit 132 modulates being sent to
Signal antenna 138 emits.
The receiving circuit 1344 includes：First inductance L1, the 7th capacitance C7, the 8th capacitance C8, the 9th capacitance C9 and
Ten capacitance C10.One end of the first inductance L1 is coupled with the modulation chip U1, another termination of the first inductance L1
Ground, one end of the 7th capacitance C7 are coupled with the modulation chip U1, the other end of the 7th capacitance C7 ground connection, and described the
One end of eight capacitance C8 is coupled with one end of the first inductance L1, the other end and the 9th capacitance of the 8th capacitance C8
One end coupling of C9, the other end of the 9th capacitance C9 are coupled with one end of the tenth capacitance C10, the tenth capacitance
The other end of C10 is coupled with the control circuit 136.
The radiating circuit 1342 includes：11st capacitance C11, the 12nd capacitance C12, the 13rd capacitance C13, the 14th
Capacitance C14, the 15th capacitance C15, the 16th capacitance C16, the second inductance L2, third inductance L3, the electricity of the 4th inductance L4 and the 5th
Feel L5.Modulation chip U1 is coupled with one end of the second inductance L2, the other end of the second inductance L2 and one end coupling of third inductance L3
It closes, and the other end of third inductance L3 and the U2 couplings of modulation chip.One end of 11st capacitance C11 and the 12nd capacitance C12's
The other end of the one end with the second inductance L2 couples.The other end of the 12nd capacitance C12 is respectively with the described 13rd
One end of capacitance C13, one end coupling of one end of the 4th inductance L4, the 14th capacitance C14, the 4th inductance L4
The other end coupled with the other end of the 14th capacitance C14.One end of the 15th capacitance C15 and the 5th inductance
One end coupling of L5, the other end of the 5th inductance L5 connect with one end of the 16th capacitance C16, and with the control
Circuit 136 processed couples, the other end of the 11st capacitance C11, the other end of the 13rd capacitance C13, the described 15th
The other end of capacitance C15 and the other end of the 16th capacitance C16 are grounded.
The control circuit 136 includes：RF switch chip U2, the 17th capacitance C17, first resistor R1, second resistance
R2 and the first field-effect tube Q1.And signal antenna 138 includes：Antenna and the 18th capacitance C18.
RF switch chip U2 is coupled respectively with one end of first resistor R1.The other end and external electrical of first resistor R1
Source couples.Drain electrode of the one end of first resistor R1 also with the first field-effect tube Q1 couples, and the grid of the first field-effect tube Q1 is equipped with
First connectivity port, first connectivity port are coupled with modulation chip U1.The source electrode ground connection of first field-effect tube Q1, and with second
One end coupling of resistance R2.And one end of the other end of second resistance R2 and the 17th capacitance C17 connect and are connect with first
Port couples.One end of RF switch chip U2 and the 18th capacitance C18 couple, the other end and antenna of the 18th capacitance C18
Coupling, the 18th capacitance C18 are additionally provided with the second connection end mouth coupled with antenna, the second connection end mouth and modulation chip U1 couplings
It closes.
As a kind of mode, RF switch chip U2 can be the mode that the I/O port of modulation chip U1 directly controls.Radio frequency
After switch chip U2 is coupled with the modulation chip U1, modulation chip U1 can by control the output of RF switch chip U2 and
The opening and closing of the first field-effect tube Q1 is controlled, so as to control the voltage of RF switch chip U2.Furthermore by controlling signal day
Connection conducting between line 138 and receiving circuit 1344.RF switch chip U2 enters the signal reception state of low-power consumption, so as to
RF switch chip U2 can receive signal.
Fig. 4 is please referred to, Fig. 4 is the structure diagram of a kind of signal processing module 140 that the utility model embodiment provides.
The signal processing module 140 includes pre-amplification circuit 141, suppression common mode signal circuit 142, low-pass filter circuit 143, band
Hinder filter circuit 144, rear class amplifying circuit 145, the pre-amplification circuit 141 respectively with the ballistocardiography acquisition module
110th, the channels and collaterals signals acquisition module 120, the suppression common mode signal circuit 142 couple, the suppression common mode signal circuit
142 couple with the low-pass filter circuit 143, and the low-pass filter circuit 143 is coupled with the rejector circuit 144, institute
Rejector circuit 144 is stated to couple with the rear class amplifying circuit 145, the rear class amplifying circuit 145 and the LORA without
Line communication module 130 couples.
Wherein, since the ballistocardiography signal of acquisition and channels and collaterals signals are fainter, so needing to it by before described
It puts amplifying circuit 141 and is amplified processing.
In the present embodiment, Fig. 5 is please referred to, Fig. 5 is a kind of pre-amplification circuit 141 that the utility model embodiment provides
Circuit diagram.The pre-amplification circuit 141 includes the first amplifier A1, the second amplifier A2, third amplifier A3, the
Four amplifier A4, the 5th amplifier A5,3rd resistor R3.4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 7th resistance
R7, the 8th resistance R8, the 9th resistance R9 and the tenth resistance R10, the in-phase input end input signal of the first amplifier A1 are reversely defeated
Enter end to connect with output terminal, the output terminal of the first amplifier A1 is connect with the in-phase input end of third amplifier A3, third amplification
The one end of the reverse input end of device A3 respectively with one end of 3rd resistor R3, the 4th resistance R4 is connect, and third amplifier A3's is defeated
Outlet is connect with the other end of 3rd resistor R3, one end of the 5th resistance R5, and the other end of the 5th resistance R5 is put respectively with the 5th
One end connection of the in-phase input end and the 6th resistance R6 of big device A5, the other end of the 6th resistance R6 are defeated with the 5th amplifier A5's
Outlet connects, and the reverse input end of the second amplifier A2 is connect with output terminal, and output terminal is in the same direction defeated with the 4th amplifier A4's
Enter end connection, the reverse input end of the 4th amplifier A4 one end with the other end of the 4th resistance R4 and the 7th resistance R7 respectively
Connection, the other end of the 7th resistance R7 are connect with one end of the 8th resistance R8, the other end and the 9th resistance R9 of the 8th resistance R8
One end connection, the other end of the 9th resistance R9 connect with one end of the tenth resistance R10, and the other end of the tenth resistance R10 is grounded.
Wherein, the tenth resistance R10 is adjustable resistance.
As a kind of embodiment, which may be used AD620 chips to design the amplifying circuit,
AD620 chips be a kind of with a non-essential resistance with regard to the low price, low-power consumption, high-precision that amplification factor is 1-1000 can be set
Instrument amplifier, it has good DC characteristic and AC characteristic, can ensure that the low imbalance needed for the amplification of high-gain precision
Voltage, the performance indicators such as low maladjustment voltage drift and low noise, therefore available for accurate data collecting system, as various faint
The preamplifier of signal.
After processing is amplified to ballistocardiography signal and channels and collaterals signals by pre-amplification circuit 141, ballistocardiography
Signal and channels and collaterals signals neutralization there may be the interference of other signals, therefore also need to use suppression common mode signal circuit 142 right
It carries out anti-interference process, can eliminate common-mode voltage therein using the circuit, moreover it is possible to improve common-mode rejection ratio, make signal defeated
The quality gone out is improved.
In the present embodiment, driven-right-leg circuit can be used to realize the design of the suppression common mode signal circuit 142, the right side
Leg driving circuit is commonly used in bio-signals amplifier, to reduce common mode interference.
Fig. 6 is please referred to, Fig. 6 is that a kind of circuit for suppression common mode signal circuit 142 that the utility model embodiment provides is former
Reason figure, the suppression common mode signal circuit 142 include the 6th amplifier A6, the 11st resistance R11, the 12nd resistance R12, the
13 resistance R13 and the 19th capacitance C19, one end of the 11st resistance R11 are connect with the output terminal of pre-amplification circuit 141,
The other end of 11st resistance R11 respectively with the noninverting input of the 6th amplifier A6, one end of the 12nd resistance R12, the tenth
One end connection of nine capacitance C19, the reverse input end ground connection of the 6th amplifier A6, the other end and the tenth of the 12nd resistance R12
Output terminal of the other end of nine capacitance C19 with the 6th amplifier A6 is connect, and the output terminal of the 6th amplifier A6 is also with the 13rd
One end connection of resistance R13, the other end of the 13rd resistance R13 are connect with the input terminal of low-pass filter circuit 143.
After suppression common mode signal circuit 142 carries out elimination interference to ballistocardiography signal and channels and collaterals signals, also it can be used
Low-pass filter circuit 143 is filtered away the ballistocardiography signal with channels and collaterals signals and interferes, and in the present embodiment, can be used
Butterworth designs the low-pass filter for meeting filtering requirements.
Fig. 7 is please referred to, Fig. 7 is the circuit theory of a kind of low-pass filter circuit 143 that the utility model embodiment provides
Figure.The low-pass filter circuit 143 includes the 7th amplifier A7, the 14th resistance R14, the 15th resistance R15, the 16th resistance
R16, the 20th capacitance C20, the 21st capacitance C21 and the 22nd capacitance C22, one end of the 14th resistance R14 and inhibition
The output terminal connection of common-mode signal circuit 142142, the other end of the 14th resistance R14 respectively with the 15th resistance R15 one
End, one end connection of the 22nd capacitance C22, one end of the 15th resistance R15 respectively with one end of the 16th resistance R16, the
One end connection of 21 capacitance C21, the other end of the 16th resistance R16 are connect with the noninverting input of the 7th amplifier A7,
The other end of 20th capacitance C20 connect and is grounded with one end of the 22nd capacitance C22, and the 22nd capacitance C22's is another
End is connect with the other end of the 16th resistance R16, and the other end of the 21st capacitance C21 is reversed with the 7th amplifier A7 respectively
The output terminal connection of input terminal, the 7th amplifier A7, output terminal are connect with the input terminal of rejector circuit 144.
Because Hz noise is the main interference of ballistocardiography signal and channels and collaterals signals, although pre-amplification circuit 141 is right
Common mode interference has stronger inhibiting effect, but has part Hz noise to be and touched aspect with difference and entered circuit, and frequency
Within frequency band in ballistocardiography signal and channels and collaterals signals, in addition the factors such as electrode and the circuit inputted are unstable, from low pass
The ballistocardiography signal and channels and collaterals signals that filter circuit 143 exports are there are still stronger Hz noise, so need specially to filter out,
It is filtered out in the present embodiment using rejector circuit 144.
Fig. 8 is please referred to, Fig. 8 is the circuit theory of a kind of rejector circuit 144 that the utility model embodiment provides
Figure.The rejector circuit 144 includes the 17th resistance R17, the 18th resistance R18, the 19th resistance R19, the 20th electricity
Resistance R20, the 21st resistance R21, the 23rd capacitance C23, the 24th capacitance C24, the 25th capacitance C25, the 8th are put
Big device A8 and the 9th amplifier A9, one end of the 17th resistance R17 connect with one end of the 23rd capacitance C23 and with it is described low
The output terminal connection of bandpass filter circuit 143, the other end of the 17th resistance R17 and one end of the 18th resistance R18, the 24th
One end connection of capacitance C24, the other end of the 18th resistance R18 are connect with the reverse input end of the 8th amplifier A8, and the 20th
The one end of the other end of three capacitance C23 respectively with one end of the 19th resistance R19, the 25th capacitance C25 is connect, the 19th electricity
The other end for hindering R19 connects respectively with the other end of the 24th capacitance C24, the output terminal of the 9th amplifier A9 and reverse input end
It connecing in succession, the positive input of the 8th amplifier A8 is connect with output terminal, and is connect with the output terminal of rear class amplifying circuit 145,
And it is connect with one end of the 20th resistance R20, the other end of the 20th resistance R20 one end with the 21st resistance R21 respectively
Connection, the positive input connection of the 9th amplifier A9, the other end ground connection of all 21 resistance.
Fig. 9 is please referred to, Fig. 9 is the circuit theory of a kind of rear class amplifying circuit 145 that the utility model embodiment provides
Figure, the rear class amplifying circuit 145 are designed using inverting amplifier, amplification and filtering can be achieved at the same time, the rear class amplifying circuit
145 include the 26th capacitance C26, the 27th capacitance C27, the 22nd resistance R22, the 23rd resistance R23 and the tenth
Amplifier A10, one end of the 26th capacitance C26 are connect with the output terminal of rejector circuit 144, the 26th capacitance C26
The other end connect with one end of the 22nd resistance R22, the other end of the 22nd resistance R22 respectively with the tenth amplifier
The reverse input end of A10, one end connection of one end of the 23rd resistance R23, the 27th capacitance C27, the 27th capacitance
The other end of C27 is connect with the other end of the 23rd resistance R23, and is connect with the output terminal of the tenth amplifier A10, also with
The input terminal coupling of LORA wireless communication modules 130, the positive input ground connection of the tenth amplifier A10.
It is amplified through signal processing module 140 and passes through LORA with the ballistocardiography signal after filtering process and channels and collaterals signals
Wireless communication module 130 is sent to Cloud Server 210, and the Cloud Server 210 is for from treated described in acquisition, the heart to rush
It hits in figure signal and channels and collaterals signals and extracts signal characteristic, institute of the signal characteristic for characterization user's vital sign parameter
The temporal signatures of ballistocardiography signal and the temporal signatures and frequency domain character of frequency domain character and the channels and collaterals signals are stated, by described in
Signal characteristic is compared with the pre-stored model for representing physical condition, to obtain the vital sign of user detection knot
Fruit, and corresponding alarm signal is generated according to the vital sign testing result and is sent to the alarm module 150.
The processing procedure of Cloud Server 210 is illustrated by taking ballistocardiography signal as an example below, please refers to Figure 10, Figure 10
For the waveform diagram of a kind of ballistocardiography signal that the utility model embodiment provides, Figure 10 show the standard of BCG signals
Waveform, normal ballistocardiography signal should be harmonious with heartbeat, has repeatability, and mainly include, M, N waves, wherein H,
The amplitude maximum of I, J, K, L wave, a combination thereof are similar to the shape of letter.
The temporal signatures of ballistocardiography signal are extracted first, and extraction process is：Temporal signatures are present in the independent heart more
It impacts in figure signal cardiac cycle, it is therefore necessary to first its period be carried out point, acquisition cycle information.Wherein it is possible to reference to warp
Network signal divides the ballistocardiography signal period, particular algorithm can also be used to carry out framing to signal, obtain the period.Label is independent
Each peak point in period, including wave crest, trough.Amplitude, interval after obtaining previous wave crest therewith between wave crest close
System, therefore constitute the feature vector for characterizing the wave crest pattern.It can be judged between two feature vectors using Euclidean distance
Similarity, tetra- class wave crest of H, J, L, N is judged with this.Clustering processing is carried out by neural network, wave character is determined
Position.Behind the J waves position for each cardiac cycle amplitude maximum of having good positioning, wave crest, the trough that can forward, backward be detected according to it
The position of H, I, K, L, M, N are determined, so as to extracting its corresponding amplitude.At the same time, according to the temporal information of positioning,
The time interval of H-I, H-J, H-J are calculated, completes the detection of composite wave.
The frequency domain character of ballistocardiography signal is extracted again, and extraction process is：Power spectrum PSE estimations are with there is limit for length
Data estimation signal power spectrum, this is highly important for the real-time analysis of the very strong signal of randomness, therefore, is adopted
The frequency spectrum of signal is analyzed with PSE algorithms, extraction can characterize the frequency domain character parameter of real-time cardiac function.
For suffering from the patient of heart disease, phenomena such as frequency spectrum will appear bimodal, multi-peak, different peak separation, because
This can also be using peak detection algorithm, and the amplitude and location information of each peak point in frequency spectrum estimated by extraction are as diagnosis
The frequecy characteristic parameter of heart disease.
In addition, signal characteristic abstraction side of the signal characteristic extracting methods of channels and collaterals signals with reference to above-mentioned ballistocardiography signal
Method is not illustrated at this.
After the signal characteristic for extracting ballistocardiography signal, i.e. temporal signatures and frequency domain character of ballistocardiography signal,
The signal characteristic is compared with the pre-stored model for representing physical condition.
Wherein, the pre-stored model for representing physical condition is corresponding with various physical conditions previously according to acquisition
The model or model, then the signal that will subsequently acquire every time are established according to the signal characteristic of multi collect that signal characteristic is established
Feature, which continuously adds, carries out sophisticated model in the model, for example, the patient that is critically ill, shock patients, hypothyroidism and mostly
In number failure at heart, Addison's disease, the recovery process seriously generated heat and artery chronic hardenability heart disease and part
In valve lesion and hypertensive patient, low dynamics ballistocardiography waveform can be shown.Most thyroid functions permit into, extremely disappear
Thin person, part anaemia, arteriovenous aneurysm, fever, early high blood pressure and only a few normal subjects in, show high powered arbor
Impact figure waveform.Furthermore in peripheral vascular disease, for example, pulseless disease, peripheral arteriosclerosis, thromboangiitis etc., normal table
Reveal abnormal ballistocardiography waveform, including I waves it is narrow and shallow or disappear, K waves increase deep, K waves or J wave incisuras etc..
In diabetic, unusual waveforms are also shown, exception ballistocardiography variation is lowered, diastole including amplitude
Phase amplitude increases, morning M shapes, late concave shape and waveform is poor etc. during breathing.These show as the patient mostly companion of abnormal ballistocardiography
There is cholesterin rising disease shape.Larger surgical site infections, I-J wave-amplitudes are substantially reduced, which is suitably infusing to subject
After have clear improvement, this may be when certain operations cardiac output reduce caused by.
So for different types of disease, the waveform of ballistocardiography signal has corresponding variation, can pass through foundation
After these can react the model of physical condition, Cloud Server 210 can be by treated described in acquisition ballistocardiography signal
It is compared with signal characteristic is extracted in channels and collaterals signals with the model, data processing speed is fast, can quickly obtain user
Vital sign testing result, i.e., whether in illness, heart rate is too fast or under other unsafe conditions, is not suitable for by user
It takes vigorous exercise.
Corresponding alarm signal, which is generated, further according to the vital sign testing result is sent to the alarm module 150, institute
The alarm signal that alarm module 150 is stated for being sent according to the Cloud Server 210 is alarmed.It is, work as Cloud Server
When the 210 vital sign testing results of users obtained are that user is under unsafe condition, then generate corresponding alarm signal to
Alarm module 150, as a kind of embodiment, the alarm module 150 include buzzer and voice module, the buzzer,
The voice module is coupled with the Cloud Server 210, and buzzer is used to send out alarm sound, voice according to alarm signal
Module is used to send out voice prompt according to alarm signal so that whether user can know the physical condition of itself in danger in time
In, so as to which unfortunate thing be avoided to occur.
In addition, the speech chip of model ISD4003-04MP can be used in voice module.
In conclusion the utility model embodiment provides a kind of sitting posture detection device for vital signs and system, rushed by the heart
The ballistocardiography signal of figure acquisition module acquisition user and the channels and collaterals signals of channels and collaterals signals acquisition module acquisition user are hit, then will
The ballistocardiography signal and the channels and collaterals signals are amplified and filtering process, and will treated ballistocardiography signal and warp
Network signal is sent to the Cloud Server by the LORA wireless communication modules, and the Cloud Server is from the processing of acquisition
Signal characteristic is extracted in ballistocardiography signal and channels and collaterals signals afterwards, the signal characteristic is characterizes user's vital sign
The temporal signatures and the temporal signatures and frequency domain of frequency domain character and the channels and collaterals signals of the ballistocardiography signal of parameter are special
Sign the signal characteristic is compared with the pre-stored model for representing physical condition, to obtain the life of the user
Sign testing result, and corresponding alarm signal is generated according to the vital sign testing result and is sent to the alarm module,
The alarm signal that alarm module is sent further according to the Cloud Server is alarmed, so as to quickly detect the body of user
Situation and user is allowed to know dangerous situation in time, and user real time inspection and can understand the body of itself on the subscriber terminal
Situation occurs to avoid unfortunate thing.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of sitting posture detection device for vital signs, which is characterized in that applied to sitting posture vital sign detecting system, the system
Cloud Server is further included, described device includes ballistocardiography acquisition module, channels and collaterals signals acquisition module, signal processing module, report
Alert module and LORA wireless communication modules, the ballistocardiography acquisition module, the channels and collaterals signals acquisition module with the letter
The coupling of number processing module, the signal processing module are coupled with the LORA wireless communication modules, the LORA radio communication molds
Block, the alarm module are used to couple with the Cloud Server, the ballistocardiography acquisition module be arranged on Chain cushion and
On backrest；
The ballistocardiography acquisition module is used to acquire the ballistocardiography signal of user；
The channels and collaterals signals acquisition module is used to acquire the channels and collaterals signals of the user；
The signal processing module is used to that the ballistocardiography signal of acquisition to be amplified and filtered with the channels and collaterals signals
Processing, and ballistocardiography signal is sent to the cloud clothes with channels and collaterals signals by the LORA wireless communication modules by treated
Business device；
The Cloud Server is used to from treated described in acquisition ballistocardiography signal and channels and collaterals signals extract signal spy
Sign, the signal characteristic be characterization user's vital sign parameter the ballistocardiography signal temporal signatures and frequency domain character with
And the temporal signatures and frequency domain character of the channels and collaterals signals, by the signal characteristic and the pre-stored mould for representing physical condition
Type is compared, to obtain the vital sign testing result of the user, and according to vital sign testing result generation pair
The alarm signal answered is sent to the alarm module；
The alarm signal that the alarm module is used to be sent according to the Cloud Server is alarmed.
2. sitting posture detection device for vital signs according to claim 1, which is characterized in that the LORA wireless communication modules
Including：Modulation circuit, signal circuit, control circuit and signal antenna；The modulation circuit and the signal processing module
Coupling, the signal circuit couple respectively with the modulation circuit and the control circuit, and the control circuit is also distinguished
It is coupled with the signal antenna and the modulation circuit, the signal antenna is coupled with the Cloud Server.
3. sitting posture detection device for vital signs according to claim 2, which is characterized in that the signal circuit packet
It includes：Radiating circuit and receiving circuit, the input terminal of the radiating circuit are coupled with the output terminal of the modulation circuit, the transmitting
The output terminal of circuit is coupled with the control circuit, the output terminal of the receiving circuit also with the input terminal coupling of the modulation circuit
It closes, the input terminal of the receiving circuit is also coupled with the control circuit.
4. sitting posture detection device for vital signs according to claim 3, which is characterized in that the modulation circuit includes：It adjusts
Coremaking piece, the first capacitance, the second capacitance, third capacitance, the 4th capacitance, the 5th capacitance, the 6th capacitance and crystal oscillator, the modulation core
Piece respectively with one end of first capacitance, one end of second capacitance, one end of the third capacitance, the 4th capacitance
One end, signal circuit coupling, one end of the crystal oscillator couples with one end of first capacitance, the crystal oscillator
The other end is coupled with one end of second capacitance, the other end of first capacitance, second capacitance the other end, described
The other end of the other end of third capacitance and the 4th capacitance is grounded, one end and the 6th capacitance of the 5th capacitance
One end with it is described modulation chip couple, the other end of the other end and the 6th capacitance of the 5th capacitance is grounded.
5. sitting posture detection device for vital signs according to claim 4, which is characterized in that the receiving circuit includes：The
One inductance, the 7th capacitance, the 8th capacitance, the 9th capacitance and the tenth capacitance, one end of first inductance and the modulation chip
Coupling, the other end ground connection of first inductance, one end of the 7th capacitance are coupled with the modulation chip, the 7th electricity
The other end ground connection of appearance, one end of the 8th capacitance couples with one end of first inductance, the 8th capacitance it is another
End is coupled with one end of the 9th capacitance, and the other end of the 9th capacitance is coupled with one end of the tenth capacitance, described
The other end of tenth capacitance is coupled with the control circuit.
6. sitting posture detection device for vital signs according to claim 5, which is characterized in that the radiating circuit includes：The
11 capacitances, the 12nd capacitance, the 13rd capacitance, the 14th capacitance, the 15th capacitance, the 16th capacitance, the second inductance, third
Inductance, the 4th inductance and the 5th inductance, it is described modulation chip coupled with one end of second inductance, second inductance it is another
One end is coupled with one end of the third inductance, the other end of the third inductance and the modulation chip coupling, and the described tenth
One end of one capacitance, the 12nd capacitance the other end of the one end with second inductance couple, the 12nd capacitance
The other end respectively with one end of the 13rd capacitance, one end of the 4th inductance, the 14th capacitance one end coupling
It closes, the other end of the 4th inductance is coupled with the other end of the 14th capacitance, one end of the 15th capacitance and institute
State one end coupling of the 5th inductance, the other end of the 5th inductance connect with one end of the 16th capacitance, and with institute
State control circuit coupling, the other end of the 11st capacitance, the other end of the 13rd capacitance, the 15th capacitance
The other end of the other end and the 16th capacitance is grounded.
7. sitting posture detection device for vital signs according to claim 6, which is characterized in that the control circuit includes：It penetrates
Frequency switch chip, the 17th capacitance, first resistor, second resistance and the first field-effect tube, the signal antenna include：Antenna and
18th capacitance, the RF switch chip couple respectively with one end of the first resistor, the other end of the first resistor
It is coupled with external power supply, the drain electrode of one end of the first resistor also with first field-effect tube couple, and described first imitates
Should pipe grid be equipped with the first connectivity port, first connectivity port with it is described modulate chip couple, first field-effect
The source electrode ground connection of pipe, and coupled with one end of the second resistance, the other end of the second resistance and the 17th capacitance
One end connect and coupled with first connectivity port, one end coupling of the RF switch chip and the 18th capacitance
It closes, the other end of the 18th capacitance is coupled with the signal antenna, and the 18th capacitance is additionally provided with and the signal day
The second connection end mouth of line coupling, the second connection end mouth are coupled with the modulation chip.
8. sitting posture detection device for vital signs according to claim 1, which is characterized in that the signal processing module includes
Pre-amplification circuit, suppression common mode signal circuit, low-pass filter circuit, rejector circuit, rear class amplifying circuit, it is described preposition
Amplifying circuit respectively with the ballistocardiography acquisition module, the channels and collaterals signals acquisition module, the suppression common mode signal circuit
Coupling, the suppression common mode signal circuit are coupled with the low-pass filter circuit, and the low-pass filter circuit is filtered with band resistance
Wave circuit couples, and the rejector circuit couples with the rear class amplifying circuit, the rear class amplifying circuit and the LORA
Wireless communication module couples.
9. sitting posture detection device for vital signs according to claim 1, which is characterized in that the alarm module includes buzzing
Device and voice module, the buzzer, the voice module are coupled with the Cloud Server.
10. a kind of sitting posture vital sign detecting system, which is characterized in that the system comprises user terminal, Cloud Server and power
Profit requires any sitting posture detection device for vital signs of 1-9, and the user terminal is coupled with the Cloud Server, the cloud
Server is coupled with the sitting posture detection device for vital signs.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106923840A (en) * | 2017-04-10 | 2017-07-07 | 桂林电子科技大学 | Sitting posture detection device for vital signs and system |
| CN109480852A (en) * | 2018-12-14 | 2019-03-19 | 桂林电子科技大学 | Sign monitoring method, system, wearable signal collecting device |
| EP3669757A1 (en) * | 2018-12-18 | 2020-06-24 | Koninklijke Philips N.V. | System and method for detecting fluid accumulation |
| WO2020126764A1 (en) * | 2018-12-18 | 2020-06-25 | Koninklijke Philips N.V. | System and method for detecting fluid accumulation |
| CN113100735A (en) * | 2021-03-30 | 2021-07-13 | 桂林电子科技大学 | Thrombus detection device and method based on venous blood flow graph |
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- 2017-04-10 CN CN201720367852.3U patent/CN207477498U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106923840A (en) * | 2017-04-10 | 2017-07-07 | 桂林电子科技大学 | Sitting posture detection device for vital signs and system |
| CN109480852A (en) * | 2018-12-14 | 2019-03-19 | 桂林电子科技大学 | Sign monitoring method, system, wearable signal collecting device |
| EP3669757A1 (en) * | 2018-12-18 | 2020-06-24 | Koninklijke Philips N.V. | System and method for detecting fluid accumulation |
| WO2020126764A1 (en) * | 2018-12-18 | 2020-06-25 | Koninklijke Philips N.V. | System and method for detecting fluid accumulation |
| CN113100735A (en) * | 2021-03-30 | 2021-07-13 | 桂林电子科技大学 | Thrombus detection device and method based on venous blood flow graph |
| CN113100735B (en) * | 2021-03-30 | 2022-08-05 | 桂林电子科技大学 | Thrombus detection device and method based on venous blood flow graph |
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