CN105898896A - Wearable body sensor network - Google Patents
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- CN105898896A CN105898896A CN201410782793.7A CN201410782793A CN105898896A CN 105898896 A CN105898896 A CN 105898896A CN 201410782793 A CN201410782793 A CN 201410782793A CN 105898896 A CN105898896 A CN 105898896A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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Abstract
The invention relates to a wearable body sensor network human body monitoring system used for monitoring the physical health of mothers and infants in real time. The wearable body sensor network human body monitoring system can carry out monitoring and pre diagnosis according to vital sign parameters. Anti-interference design is adopted, radio interference between sensor nodes and between the sensors and an external environment can be deceased, so that the reliability of the system can be improved. Based on the combination of sensor technology, wireless data transmission technology and computer network technology, mother and infant wireless monitoring waistcoats rapidly detect electrocardiogram and body temperature signals of the mothers and the infants; and the human body feature parameters of the mothers and the infants, such as heart rates and body temperature, which reflect physical health, are displayed timely and transmitted to medical equipment through a local communication node so as to be analyzed and evaluated. The low-cost and low-energy consumption wearable sensor nodes with interconnection capability are designed, and a data analysis algorithm for processing and analyzing data returned by the nodes is developed, and therefore, early judgment on the complications of pregnancy can be realized. Interference in the wearable sensor network is researched, so that radio interference between the sensor nodes and between the sensors and the environment can be decreased.
Description
Technical field
The present invention relates to human body sensor network to the monitoring of baby's health and Data fusion technique.
Background technology
Mobile sensor network is currently to receive much concern in the world, relate to the hot research field, forward position that multidisciplinary height intersection, knowledge are highly integrated.
It combines sensor technology, embedding assembly technology, modern network and wireless communication technology, distributed information processing etc., it is possible to by respectively
The integrated microsensor of class is monitored the most in real time, perception and the various environment of collection or the information of monitoring object, and these information are wirelessly
Sent, and be sent to user terminal with the network mode from group multi-hop, thus realize physical world, calculate the world and the human society ternary world
Connection.
Mobile sensor network can get a lot of applications at military and civil aspect, for example, battlefield supervision, search for and defend, hazardous environment
Under work, environmental monitoring, target following and remote sensing.And the various parameter monitorings such as temperature in commercial production, pressure, flow, paper mill grass
Buttress monitoring, grain depot monitoring and the monitoring etc. of farming industry.
In these three parts of wireless sensor network architecture, current development is concentrated mainly on several aspect, main at Protocol communication layer
Research emphasis is data link layer MAC protocol and the research of Internet Routing Protocol；At network management technology layer, main direction of studying is to collect number
According to management, the solution of power saving and the realization of Network Communicate Security；At network support technology layer, main research point is node locating problem
Solution, the realization of Time synchronization technique and the realization of user's application interface. among these, the research of agreement is again complementary with energy-conservation realization.
One of key problem of sensor network research is power managed.By the analysis to existing system, radio-frequency module is maximum in node
Energy-consuming parts, be optimize main target.MAC protocol directly controls radio-frequency module. node power consumption had a major impact.
Energy is the basis of node work, and power saving almost runs through the various aspects of wireless sensor network development.The foundation of agreement needs to examine
Consider power saving, with the research of MAC protocol above and the realization of Routing Protocol it can be seen that；Data in network process need to consider energy-conservation
Problem, does not has energy, and data cannot process；Node locating, time synchronized are required for considering power saving, the solution of power saving, follow often
In the realization of individual link.Certainly, power save mode purely also has a lot, such as allows node regular " dormancy " etc..But, most energy-conservation also
It is included in and has implemented in the middle of details, as document have employed a kind of effective routing mode with energy hole, sent by adjusting each node
Data transmission range during data and then the energy of adjustment consumption, to save resource, thus extend network life.
Data fusion is exactly the process that the data fusion of not homology becomes a kind of data.Data after fusion contain the feature of original multi-source data.
Along with the development of multisensor Data Fusion technology, the field of application is also constantly expanding, and multi-sensor fusion technology is applied successfully to
Numerous research fields.Fusion is as a kind of eliminating the uncertain factor of system, providing observed result and integrated information accurately
Intelligent data processing technology, at military affairs, industrial monitoring, Intelligent Measurement, robot, graphical analysis, object detecting and tracking, automatic mesh
Mark does not wait field obtain common concern and extensively apply.
The ultimate principle of Fusion is also just as human brain integrated treatment information.Make full use of multiple sensor resource, by many
The rationally domination of sensor and observation information thereof and using, sense more space or on the time can redundancy or complementary information, enter according to certain criterion
Row group platform, to obtain the concordance explanation of measurand or to describe.
Multi-sensor data-fusion system processes with all single-sensors or compared with the multi-sensor data processing mode of low level, the latter is to human brain
A kind of low-level of information processing is imitated, and they can not effectively utilize multisensor resource as multi-sensor data-fusion system.Multisensor
System can obtain the information teller in detected mouth mark brush ring border to a greater degree, also makees between Fusion and classical signals processing method
The difference of essence, it it is critical only that the multi-sensor information handled by data fusion has more complicated form, and can be at different level of information
Upper appearance, these information levels include data Layer (i.e. pixel layer), characteristic layer and decision-making level's (i.e. evidence layer).
Summary of the invention
It is contemplated that a kind of wireless human body sensor network of research and development, for remote control with monitor human health status continuously.The system realized will be used for
Clinic, ambulance or household infant production monitoring.Human body sensor network can provide mother's rhythm of the heart to measure in real time, heart contraction and baby's rhythm of the heart.
All measurement data will be summarized on local communication node such as mobile phone and pass to carry out on armarium assay the most at a distance.System mainly includes health
Sensor network clothes, data collection and the mobile gateway of process, the healthy interface etc. of patient visual.This system movability is strong, thus to existing greatly
For type pregnancy period inspection equipment, it is a kind of replacement and supplementary, it is possible in the case of not affecting mother's daily life, the pregnancy period carrying out necessity checks.
For remote districts anemia of pregnant woman for all the more so, hard work of hurrying back and forth can be exempted；For the anemia of pregnant woman produced that is in, it is possible to monitor whole process,
And provide real-time data to hospital, protect to mother and baby's necessity, improve natality.
In order to monitor the physical condition of mother and baby continuously, a kind of human body sensor network of exploitation.According to parameters such as vital signs, in real time to mother and baby
Health detect, and carry out pre-diagnosis, be medically of great value, be also necessary.Real-time monitoring vital sign, energy
Enough improve baby and the quality of life of mother, it is to avoid occur unexpectedly；Because this human body sensor network mobility is strong, so to existing large-scale pregnant
For phase inspection equipment, it is a kind of replacement and supplementary, it is possible in the case of not affecting mother's daily life, the pregnancy period carrying out necessity checks.For
Remote districts anemia of pregnant woman for all the more so, hard work of hurrying back and forth can be exempted；For being intended to the anemia of pregnant woman that family produces, it is possible to monitor whole process,
And provide real-time data to hospital, protect to mother and baby's necessity, improve natality；System includes a kind of people wearable and energy-conservation, reliable of exploitation
Body sensor networks, such as the exploitation of agreement, the design of user interface between doctors and patients, and the reliability of data, integrity and safety；Design tool
There are interconnection capability and wearable human body sensor node, including low cost, the design of the software and hardware of low power consuming；Exploitation data analysis algorithm, should
The data that human body sensor node can be passed back by algorithm process and analyze, and extract important information, judge pregnancy complication early；
Interference between research wireless sensor network, reduce between sensor node, radio interference between sensor and environment as far as possible；Carry out human sensing
The clinical trial of device network, the clinical verification stage, the performance of appraiser's body sensor networks, and record its medical value.
Detailed description of the invention
1 human body sensor procotol
Owing to human body sensor network has, super low energy consumption, low-complexity, transmission dutycycle be unpredictable, data spy such as transmission between heterogeneous nodes
Property, traditional sensor network medium accesses control (MAC) agreement can not meet its particular/special requirement.Therefore, in this project,
IEEE 802.15.4 with UWB will be combined, develop the MAC protocol of a kind of super low energy consumption for biomedical sensor.IEEE 802.15.4
It is a kind of for low energy consumption, the standard of the opening of low data rate network design.But, it is while ensureing compatibility, does not the most have and processes special answering
With the motility of demand.Target of we this research be intended to design a kind of flexibly and possess the compatible human body sensor of IEEE 802.15.4
Medium Access Control Protocols (B-MAC).It disclosure satisfy that the particular/special requirement of human body sensor network.Key technology is its parameter of adaptive adjustment, with
Just the energy consumption of network is reduced.
B-Mac structure and parameter optimizes
B-MAC is based on open standard IEEE 802.15.4.Owing in BSN, number of sensors is limited, and the energy consumption of BSN gateway
Being unrestricted with calculating resource, therefore for network, stelliform connection topology configuration is more particularly suitable.Beacon and non-beacon mould in stelliform connection topology configuration
Under formula, the MAC protocol under IEEE 802.15.4 is all applicable.
The advantage of beacon patterns be that gateway can be random with sensor node communication, its inferior position is that node must stay awake for receive letter
Mark, and Tong Bu with the gateway retention time at any time.
The saving of BSN energy, depends on dutycycle and data transfer rate greatly.In order to reduce energy consumption, the assessment of IEEE 802.15.4 will be carried out, this
Some the design for self adaptation B-MAC agreement is provided and ensure.In the self adaptation B-MAC agreement proposed, its core concept is to pass from biology
Sensor node aspect considers special demand, and converts superframe structure accordingly.We will be adaptivity quantification two indices: can dose-effect
Rate and transmission delay.Wherein, controlled parameter includes beacon spacing (BI), the valid frame persistent period (SD), the choosing of CAP/CFP pattern, GTSs
Quantity, three adjustable channel access variablees of CSMA/CA, power source life extension (BLE) pattern.The result of this research is one MAC of exploitation
Protocol optimization design tool.Utilize this instrument, it is possible to produce one group of optimized parameter for BSN so that MAC protocol energy efficiency is higher, pass
Defeated delay is less.This group optimized parameter is that the specific demand according to application determines.There is the BSN of different sensors, its information transmission mode
Also different, therefore, optimized parameter is also different, in order to reach the saving of energy.
Self adaptation B-MAC of information Perception
In traditional sensor network, energy consume mainly conflict, cross-talk, monitoring time pin and free time are unwrapped in control.BSN is general only
Have a small amount of sensor node and asymmetrical transmission demand.For periodic data record, the probability clashed is the least, and
Conflict is not main energy expenditure.But, when the physiology early warning signal of an early stage occurs, the most of sensor nodes in BSN are all
Needing and gateway communication, conflict reforms into main factor.For incidence rate, low duty ratio, monitor the energy consumed time idle and also become
Main aspect for energy consumption.A kind of energy expenditure additionally is produced by inappropriate dutycycle.If when low-rate data transmission, also adopted
By dutycycle during high rate data transmission, that will cause the waste of energy.In B-MAC, we will use a kind of cross-layer design, and it can
By network being obtained the cognition of information, instruct medium access.
For B-MAC agreement, in the energy management of system level, gateway plays an important role.Gateway is controlled by superframe structure
The communication of network.Different superframe structures is used for making the network equipment synchronize.For in terms of the network equipment, sensor node enters resting state prison
Listen to reduce energy consumption.When event occurs or has data transportation requirements when, the network equipment is waken up the most again.When network equipment dormancy,
Gateway can not communicate with them.Then, wake up up at random and be predetermined in a gateway with synchronization mechanism, so as to the inquiry network equipment.From gateway
For aspect, it is shorter that the persistent period of superframe is set, and so can reduce the propagation delay time.Once having data transfer request, gateway is then adjusted
The live part of its superframe whole, such as: time length.Gateway processes the transmission from Wearable sensor and embedded type sensor by different modes
Request.The transmission request of Wearable sensor will not trigger superframe structure and big change occurs.And the superframe structure of embedded type sensor is big by occurring
Change is to reduce the power consumption of transmission between mobile gateway and sensor.We to study a kind of self adaptation reducing energy consumption by changing parameter and assist
View.
Use the MAC of physiological signal
MAC protocol based on medium contention, such as: CSMA/CA, can lead to a conflict, then cause extra energy consumption and Network Transmission Delays.
For this problem, TDMA is one preferably solution.Because it has Lothrus apterus characteristic and definitiveness transmission characteristic.But, common
TDMA is because time synchronization problem needs to consume a part of extra energy, and therefore, in this project, we will be for BSN network research one
Plant new TDMA based on MAC protocol.Our target is to utilize rhythm of the heart information to reach time synchronized, in order to realize energy-conservation.Everyone has
The rhythm of the heart, and reflect different physiological signals.Biosensor can extract rhythm of the heart information from the crest sequence of sensing data.Due to all
The rhythm and pace of moving things all provided by heartbeat, so they can be as time synchronizing signal.Therefore, periodically with radio between gateway and node
Mode carries out the energy that time synchronized consumed and just can eliminate, and then extends the life cycle of network.
First problem to be studied in this field is that a kind of crest recognizer of exploitation represents biological rhythm information.Second Problem is time slot planning
With time synchronized restoration methods.We with crest as time synchronized mark, with peak separation as time slot.
It addition, the autonomous time slot planning of multisensor is also important studying a question.We choose the external equipment gateway as BSN,
It can be used to transmission network and controls information, such as: time slot planning information, time synchronized recovering mark.Gateway also is able to the biology by its own
Sensor obtains rhythm of the heart information.
The exploitation of 2 human body sensor nodes
Wireless sensor platform
In this project, we plan by TI/Chipcon cc2430/cc2431 radio transceiver and a reinforced 8051MCU exploitation one
Wireless senser.Further, developing an energy-conservation wireless sensor platform based on this, this platform is open, it is possible to be used for as middleware and embedding
Formula system service.
Wireless platform is battery-driven, and can interconnect with various analog-and digital-sensors, and microcontroller therein has a built-in A/D
Transducer, can be interconnected with any sensor by it.This platform can gather, preprocessed signal, and can transmit signal to mobile gateway.
It addition, its energy consumption to be also estimated by we.
Mobile gateway
In whole architecture, mobile gateway is a carry-on base station or repeater.It gathers the data that Sensor monitoring arrives, and information
Pass on remote server, or be directly passed to the private doctor of wearer.Due to most wireless operator commercial city support smart phone, therefore,
We use it, to facilitate wearer no matter when and where can be connected.In the exploitation of gateway, there are two tasks: task one is data
Storage one small-sized data base of exploitation；Task two is to develop a user interface for doctor and patient, facilitates their access to data.
3 information processings
Develop a kind of algorithm processed and analyze sensing data, it is possible to the diagnosis for medically abnormal phenomena provides foundation.Owing to most important information is
Baby's rhythm of the heart (FHR) and mother's rhythm of the heart (MHR), so in this project, the Time-frequency Analysis of our plan three phases is from sensing data
Extract the two information.First stage is R-peaks and the datum mark (starting point of QRS and side-play amount) detecting mother with Time-frequency Analysis,
To obtain the QRS complex of mother, the signal interval calculating R-R subsequently just can obtain MHR.Second stage is to use Phase information
The position of the baby R-peaks of candidate is determined with pattern matching theory.In the phase III, use histogram technology, determine and be superimposed upon mother QRS
The R-peaks of the baby on complex wave.Result in conjunction with second and third stage, it becomes possible to obtain the R-R signal interval of baby, and then obtain
FHR.MHR and FHR contributes to diagnosing arrhythmia and the cardiac health of baby of mother.
The performance study of 4 wireless sensor networks
To the sensor network performance monitored for mother and baby, we will be analyzed from following parameter and assess, in order to is optimized.(1) sensing
Device specification；(2) average discharge of network；(3) consumption of energy and the life-span of power supply；(4) with the interference of other 2.4G networks.
The clinical trial of 5 human body sensor networks
The final goal of this project is intended to develop a kind of BSN carrying out mother and baby's monitoring before baby due, and it not only wants function admirable, and
And be also safety convenient on using.Therefore, we be primarily upon following some: (1) dresses the mode of BSN most effectively；(2) due to BSN
Any inconvenience of bringing of application；(3) any potential safety hazard；(4) any user error hidden danger；(5) the interference hidden danger of any radio communication.
Claims (6)
1. a wireless human body sensor network, for remote control with monitor human health status continuously.The system realized
Clinic, ambulance or household infant production monitoring will be used for.Its feature is: mother's rhythm of the heart can be provided real
Time measure, heart contraction and baby's rhythm of the heart, it is enterprising that measurement data passes to armarium by local communication node
Row assay.System mainly include body sensor network clothes, the mobile gateway of data collection and process,
The healthy interface etc. of patient visual.
2. the system of claim 1, it is characterised in that system body part is a wearable sensor network,
It is made up of various medical sensors, for the rhythm of the heart of measurement mother in real time, the weight such as heart contraction and baby's rhythm of the heart
Want health parameters.
3. the system of claim 1, it is characterised in that system has interconnection capability and wearable human sensing
The data obtained in power 2 can be transferred to armarium by device node.
4. the system of claim 1, it is characterised in that system has the design of the software and hardware of low cost, low power consuming,
Make system can be widely popularized and life-time service.
5. the system of claim 1, it is characterised in that the data that human body sensor node can be passed back by system are entered
Row processes and analyzes, and extracts important information, judges pregnancy complication early.
6. the system of claim 1, it is characterised in that system uses Anti-interference Design, decreases sensor node
Between, radio interference between sensor and environment, improve the reliability of system, it is ensured that important medical science number
According to safety.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410782793.7A CN105898896A (en) | 2014-12-15 | 2014-12-15 | Wearable body sensor network |
| PCT/CN2015/095896 WO2016095691A1 (en) | 2014-12-15 | 2015-11-30 | Wearable body sensor network |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410782793.7A CN105898896A (en) | 2014-12-15 | 2014-12-15 | Wearable body sensor network |
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| CN105898896A true CN105898896A (en) | 2016-08-24 |
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| CN201410782793.7A Pending CN105898896A (en) | 2014-12-15 | 2014-12-15 | Wearable body sensor network |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101427920A (en) * | 2008-12-01 | 2009-05-13 | 江南大学 | Wireless monitoring dress system for mother and baby |
| CN102375920A (en) * | 2010-08-19 | 2012-03-14 | 高向阳 | Maternal and infant management system |
| CN103179692A (en) * | 2011-12-26 | 2013-06-26 | 陈建新 | Human motion tracking system based on Zigbee/ institute of electrical and electronic engineers (IEEE) 802.15.4 |
| CN103876711A (en) * | 2014-03-27 | 2014-06-25 | 北京圣博亚科技有限公司 | Wearable electronic device and human body health monitoring and managing system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4329898A1 (en) * | 1993-09-04 | 1995-04-06 | Marcus Dr Besson | Wireless medical diagnostic and monitoring device |
| US20030107487A1 (en) * | 2001-12-10 | 2003-06-12 | Ronen Korman | Method and device for measuring physiological parameters at the wrist |
| CN101491431A (en) * | 2008-01-24 | 2009-07-29 | 海尔集团公司 | Remote medical system |
-
2014
- 2014-12-15 CN CN201410782793.7A patent/CN105898896A/en active Pending
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2015
- 2015-11-30 WO PCT/CN2015/095896 patent/WO2016095691A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101427920A (en) * | 2008-12-01 | 2009-05-13 | 江南大学 | Wireless monitoring dress system for mother and baby |
| CN102375920A (en) * | 2010-08-19 | 2012-03-14 | 高向阳 | Maternal and infant management system |
| CN103179692A (en) * | 2011-12-26 | 2013-06-26 | 陈建新 | Human motion tracking system based on Zigbee/ institute of electrical and electronic engineers (IEEE) 802.15.4 |
| CN103876711A (en) * | 2014-03-27 | 2014-06-25 | 北京圣博亚科技有限公司 | Wearable electronic device and human body health monitoring and managing system |
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