CN201422873Y - Volume pulse wave signal acquisition system based on Bluetooth technology - Google Patents
Volume pulse wave signal acquisition system based on Bluetooth technology Download PDFInfo
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- CN201422873Y CN201422873Y CN2009201097422U CN200920109742U CN201422873Y CN 201422873 Y CN201422873 Y CN 201422873Y CN 2009201097422 U CN2009201097422 U CN 2009201097422U CN 200920109742 U CN200920109742 U CN 200920109742U CN 201422873 Y CN201422873 Y CN 201422873Y
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Abstract
The utility model provides a volume pulse wave signal acquisition system based on the Bluetooth technology, which belongs to the field of human parameter detection of biomedical engineering. The system comprises a photoelectric sensor, a CPU, a pulse power supply circuit, a signal amplification filter circuit, a baseline regulating circuit, a numerically controlled gain circuit, a Bluetooth communication circuit, a power management circuit and mobile equipment, wherein, the pulse power supply circuit supplies impulse voltage to the photoelectric sensor; signals are processed via the signal amplification filter circuit and then sequentially passes through the baseline regulating circuit, the numerically controlled gain circuit and an A/D converter, and the digital signals are sent to the CPU; a Bluetooth module is connected with the CPU and conducts wireless communication with the mobile equipment; and the power management circuit provides the required voltage for all the elements/components except for the mobile equipment. The system has the advantages of simple operation, portability and strong practicability, and can be widely applied to cardiovascular function detection and analysis.
Description
Technical field
This utility model is a kind of volume pulsation wave signal acquiring system based on Bluetooth technology, native system combines medical science detection, wireless communication technique with mobile device, can be widely used in cardiovascular function and detect, guard and analyze, belong to the human parameters detection range of biomedical engineering.
Background technology
It is healthy and cause one of dead serious disease that cardiovascular disease has become harm humans in the global range.The scientific and technical means of uses advanced detect the cardiovascular system of human body function, find the state of an illness early, and accurately make the diagnosis have important practical significance.
At present, both at home and abroad the noinvasive equipment that detects the cardiovascular hemodynamic mathematic(al) parameter mainly contains: ultrasoundcardiogram method, cardiac impedance method, spiral CT, nuclear cardiology method, magnetic resonance method etc., but these methods exist that volume is big, complicated operation, cost an arm and a leg, shortcoming such as testing environment is strict.The research and the Clinical detection of cardiovascular noinvasive hemodynamic parameter have been carried out considerable time, detect tens parameters that cardiovascular hemodynamic is learned according to the principle of hemodynamics noinvasive, testing result has dependency preferably by contrasting with float catheter, echocardiography method.The parameter that detection obtains can comparatively comprehensively reflect the cardiovascular function of human body, and characteristics such as detection method has in real time, noinvasive, rapid and convenient.1938, Hertzman has proposed photoelectricity volume pulse tracing first, and (PhotoPlethysmoGraphy, PPG), be that excuse me the electric hand section detected a kind of noinvasive detection method that volumetric blood changes in biological tissue.The volumetric blood that flows through in the arteriole of finger tip, blood capillary and the venule changes, and can reflect many cardiovascular important informations such as heartbeat function, blood flow, peripheral blood vessel and microcirculation.The instrument and equipment of costliness because photoelectricity volume pulse tracing does not need complexity, luminous energy is avoided intensive electromagnetic interference, has very high insulating properties, can non-invasively detect the various symptom information of patient, photoelectricity volume pulse tracing becomes a kind of preferably detection technique of prospect in the detection mode.At present, utilize this method generally to be used for detecting blood oxygen, brain oxygen, flesh oxygen, breathing rate and respiratory capacity etc. more.Before and after the nineties in 20th century, research worker begins mechanism research and the pressure pulse wave theory and combining with volume pulsation wave both at home and abroad, think that the blood flow characteristic that removes to derive and analyze volume pulsation wave by the characteristic of pressure pulse wave just becomes the directly perceived and effective method of comparison, their both relations will constitute the cardiovascular flow parameter of keys such as the Peripheral resistance of cardiovascular system and vascular compliance.
At detection range, life parameters acquisition system in the market is to adopt wired modes such as serial ports, USB interface to carry out the transfer of data of front end mostly, has limited transmission range and User Activity space.Though relevant reports such as remote electrocardiogram monitor instrument are arranged, and great majority still rest on single data acquisition scheme, and most of based on PC or use Alternating Current Power Supply, be not easy to carry.
The utility model content
The purpose of this utility model has been to overcome the above-mentioned defective of existing checkout gear, a kind of volume pulsation wave signal acquiring system based on Bluetooth technology is provided, the cardiovascular function detection system of this system for mobile device is combined with Medical Instruments, can allow the detection family oriented, individualized of specialty, play the prevention and the forewarning function of disease.
To achieve these goals, this utility model has been taked following technical scheme.Native system comprises photoelectric sensor, cpu central processing unit, pulse power supply circuit, signal amplification circuit filter, baseline adjusted circuit, numerical control gain circuit, bluetooth communication circuit, electric power management circuit and mobile device.
The outfan of photoelectric sensor links to each other with CPU with signal amplification circuit filter, baseline adjusted circuit, numerical control gain circuit, A/D converter successively, the signal of telecommunication that is collected by photoelectric sensor at first carries out signal processing through signal amplification circuit filter and at first carries out signal processing through signal amplification circuit filter by the signal of telecommunication that photoelectric sensor collects, adjust the voltage of DC component again by the baseline adjusted circuit, amplify through the numerical control gain circuit at last, the signal after the amplification is stored among the CPU after through A/D converter analog signal conversion being become digital signal.
CPU links to each other with mobile device by the bluetooth communication circuit, CPU sends to mobile device with the digital signal (volume pulsation wave Wave data) of storage by the bluetooth communication circuit in real time, and receiving the instruction that mobile device transmits, the transmission of its data and receiving course are controlled by CPU.
CPU links to each other with photoelectric sensor by the pulse power supply circuit, and the pulse power supply circuit provides pulse voltage for photoelectric sensor under the control of CPU.
CPU links to each other with the baseline adjusted circuit by D/A converter, and CPU calculates the population size of baseline adjusted according to the data of having imported into, and by D/A converter digital quantity is converted to analogue signal and exports to the baseline adjusted circuit, thus the voltage of adjustment DC component.
CPU links to each other with the numerical control gain circuit by digital potentiometer, and by the increase or the minimizing of CPU control numerical control gain circuit amplification, CPU regulates the resistance of digital potentiometer, and then the amplification of control numerical control gain circuit.Signal imports digital signal into CPU through behind the A/D converter, and digital signal is stored among the CPU;
Other all elements link to each other with circuit in electric power management circuit and the circuit, and required voltage is provided, and simultaneously, battery electric quantity is subjected to the monitoring of CPU, so as when electric weight to be not enough to user prompt.Mobile device carries out wireless connections by bluetooth module and collecting device, but real-time communication and to the calculating of volume pulsation wave signal, draws testing result, and to the storage and the management of data.
Compare with existing apparatus, the utlity model has following advantage:
1) radial artery pulse wave that replaces the past that position and pressure are had relatively high expectations by finger volume pulse ripple detection mode detects, and detection mode is more simple;
2) use Bluetooth technology, checkout equipment and smart mobile phone are carried out wireless connections, signal is sent to smart mobile phone, broken away from the constraint of wire transmission, the user has bigger activity space when detecting.Simultaneously, exploitation Condition of Cardiovascular Function evaluation system can in time calculate, analyze and estimate the data that collect on mobile device; Utilize database technology, personal information and testing result can be filed, help the situation of change of long-term observation cardiovascular function.By the radio communication function of mobile device, carry out information interaction with regional data center, support remote medical consultation with specialists, case to follow the trail of, provide the community medicine value-added service; The data center of medical institutions is by gathering a large amount of case data, the data mining that can be correlated with and statistical work.This just provides one to carry out the comprehensive system that cardiovascular function detects whenever and wherever possible for the user, also haves laid a good foundation in the future correlational study and service.
Description of drawings
Fig. 1 structured flowchart of the present utility model;
The specific embodiment
Below in conjunction with Fig. 1 this utility model is further described:
As shown in Figure 1, present embodiment comprises photoelectric sensor, cpu central processing unit, pulse power supply circuit, signal filtering amplifying circuit, baseline adjusted circuit, numerical control gain circuit, bluetooth communication circuit, electric power management circuit and mobile device.The pulse power supply circuit links to each other with cpu central processing unit with photoelectric sensor respectively in the present embodiment, the pulse power supply circuit is used for providing pulse voltage for photoelectric sensor, by the switch of CPU control impuls power supply circuits, thereby the control photoelectric sensor begins or quits work.The signal filtering amplifying circuit links to each other with the baseline adjusted circuit with pick off respectively, and the signal of telecommunication that is collected by photoelectric sensor at first carries out signal processing through signal amplification circuit filter.By the baseline adjusted circuit, adjust the voltage of DC component again, CPU calculates the population size of baseline adjusted according to the data of having imported into, by D/A converter digital quantity is converted to analogue signal and exports to the baseline adjusted circuit.Pass through the numerical control gain circuit at last, control the increase or the minimizing of its amplification, regulate the resistance of digital potentiometer by the I/O mouth by CPU.Signal imports digital signal into CPU through behind the A/D converter at last, and digital signal is stored among the CPU.Bluetooth module links to each other with CPU, and carries out wireless telecommunications with mobile device, in real time the volume pulsation wave Wave data is sent to mobile device, and receives the instruction that mobile device transmits simultaneously, and the transmission of its data and receiving course are controlled by CPU.Electric power management circuit provides required voltage for all components and parts beyond the mobile device, and it comprises two joint ni-mh or alkaline battery and voltage conversion circuits, and battery electric quantity is subjected to the monitoring of CPU, so as when electric weight to be not enough to user prompt.Mobile device is used for and the collecting device real-time communication, and to the calculating of volume pulsation wave signal, draws testing result, and to the storage and the management of data.
What cpu central processing unit was selected for use in the present embodiment is single-chip microcomputer (AVR or 51 series), controls other each circuit working by the input/output signal of its each port.
The pulse power supply circuit is made up of field effect transistor and peripheral circuit thereof in the present embodiment, and the I/O mouth of CPU is controlled the conducting of field effect transistor and closed, thereby realizes the on-off control to pick off.
Signal amplification circuit mainly is made up of instrument amplifier and peripheral resistance preamplifier in the present embodiment.
Signal filter circuit is made up of second order Butterworth LPF and circuit thereof in the present embodiment, comprises operational amplifier and RC feedback network.
The baseline adjusted circuit is connected to form by operational amplifier and CPU in the present embodiment, the D/A output scalable baseline voltage of CPU.
The numerical control gain circuit is connected to form by digital potentiometer and operational amplifier and CPU in the present embodiment, and the I/O port of CPU links to each other with each control end of digital potentiometer respectively, comprises the sheet choosing, sends pulse, the control of amplitude of variation direction.Potentiometer and operational amplifier have been formed feedback circuit.The last output of signal is connected to A/D converter and carries out analog digital conversion.
The bluetooth communicating circuit is connected to form by bluetooth module and peripheral circuit thereof and CPU in the present embodiment.By the transmitting-receiving of data between CPU control bluetooth module and mobile device and to the monitoring of its duty.
Electric power management circuit is made up of voltage transitions chip and peripheral circuit thereof in the present embodiment, and two joint Ni-MH batteries or alkaline battery voltage are increased to 3.3V, is other components and parts power supply in the circuit.
Mobile device must be supported blue tooth interface in the present embodiment, and can installation and measuring software.For example smart mobile phone, PDA etc.
Present embodiment is set up bluetooth with mobile device and harvester earlier and is connected when detecting, and simultaneously, only the forefinger or the middle finger of human body need be put into photoelectric sensor; Treat to get final product real-time acquired volume pulse wave signal after mobile device starts collection, and in the enterprising line data analysis of mobile device.This utility model is easy to carry, and is simple to operate, practical.
Claims (3)
1, a kind of volume pulsation wave signal acquiring system based on Bluetooth technology comprises photoelectric sensor, CPU, pulse power supply circuit, signal amplification circuit filter, baseline adjusted circuit, D/A converter, numerical control gain circuit, A/D converter, bluetooth communication circuit, electric power management circuit and mobile device; Wherein:
The outfan of photoelectric sensor links to each other with CPU with signal amplification circuit filter, baseline adjusted circuit, numerical control gain circuit, A/D converter successively, the signal of telecommunication that is collected by photoelectric sensor at first carries out signal processing through signal amplification circuit filter, adjust the voltage of DC component again by the baseline adjusted circuit, amplify through the numerical control gain circuit at last, the signal after the amplification is stored among the CPU after through A/D converter analog signal conversion being become digital signal; CPU links to each other with mobile device by the bluetooth communication circuit, and CPU sends to mobile device with the digital signal of storage by the bluetooth communication circuit, and receives the instruction that mobile device transmits;
CPU links to each other with photoelectric sensor by the pulse power supply circuit, and the pulse power supply circuit provides pulse voltage for photoelectric sensor under the control of CPU;
CPU links to each other with the baseline adjusted circuit by D/A converter, and CPU calculates the population size of baseline adjusted according to the data of having imported into, by D/A converter digital quantity is converted to analogue signal and exports to the baseline adjusted circuit;
CPU links to each other with the numerical control gain circuit by digital potentiometer, and CPU regulates the resistance of digital potentiometer, and then the amplification of control numerical control gain circuit;
Electric power management circuit links to each other with above-mentioned all circuit, for it provides required voltage;
CPU links to each other with electric power management circuit, its battery electric quantity of cpu monitor.
2, a kind of volume pulsation wave signal acquiring system based on Bluetooth technology according to claim 1, it is characterized in that: described cpu central processing unit is 51 series or AVR series monolithic.
3, a kind of volume pulsation wave signal acquiring system based on Bluetooth technology according to claim 1 is characterized in that: described mobile device is the support blue tooth interface, and the smart mobile phone that detects software is installed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201097422U CN201422873Y (en) | 2009-06-26 | 2009-06-26 | Volume pulse wave signal acquisition system based on Bluetooth technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009201097422U CN201422873Y (en) | 2009-06-26 | 2009-06-26 | Volume pulse wave signal acquisition system based on Bluetooth technology |
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| CN201422873Y true CN201422873Y (en) | 2010-03-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104622444A (en) * | 2015-01-30 | 2015-05-20 | 中国科学院电子学研究所 | Wrist monitoring system with multiple photoelectric sensor modules |
| CN106527557A (en) * | 2016-11-25 | 2017-03-22 | 上海中嘉衡泰医疗科技有限公司 | Software-controlled base line regulating circuit |
| CN108618772A (en) * | 2018-05-30 | 2018-10-09 | 北京小汤山医院 | Real-time continuous ambulatory blood pressure monitoring system in a kind of cardiopulmonary exercise test |
-
2009
- 2009-06-26 CN CN2009201097422U patent/CN201422873Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104622444A (en) * | 2015-01-30 | 2015-05-20 | 中国科学院电子学研究所 | Wrist monitoring system with multiple photoelectric sensor modules |
| CN106527557A (en) * | 2016-11-25 | 2017-03-22 | 上海中嘉衡泰医疗科技有限公司 | Software-controlled base line regulating circuit |
| CN108618772A (en) * | 2018-05-30 | 2018-10-09 | 北京小汤山医院 | Real-time continuous ambulatory blood pressure monitoring system in a kind of cardiopulmonary exercise test |
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Owner name: BEIJING YES MEDICAL DEVICES COMPANY LIMITED Free format text: FORMER OWNER: BEIJING INDUSTRY UNIVERSITY Effective date: 20110310 |
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Free format text: CORRECT: ADDRESS; FROM: 100124 NO. 100, PINGLEYUAN, CHAOYANG DISTRICT, BEIJING TO: 100052 A217, GROUND FLOOR STORE, BUILDING 15-18, CHUNSHUYUAN, XUANWU DISTRICT, BEIJING |
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